/* roulang page: index */
:root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --accent: #f4a261;
            --accent-dark: #e07b3c;
            --bg-dark: #1a1a2e;
            --bg-darker: #0f0f1a;
            --bg-card: #16213e;
            --bg-light: #f8f9fa;
            --bg-white: #ffffff;
            --text-main: #1a1a2e;
            --text-body: #2d3436;
            --text-weak: #636e72;
            --text-light: #b2bec3;
            --text-white: #f8f9fa;
            --border: #dfe6e9;
            --border-light: #f0f0f0;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.14);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.18);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 22px;
            --radius-full: 50px;
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', 'Segoe UI', sans-serif;
            --max-width: 1240px;
            --nav-height: 64px;
            --nav-top-height: 40px;
            --float-bar-height: 60px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-body);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: 104px;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            text-decoration: none;
        }

        button {
            cursor: pointer;
            font-family: var(--font-body);
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-heading);
            color: var(--text-main);
            margin-top: 0;
            line-height: 1.3;
            font-weight: 700;
        }

        h1 {
            font-size: 2.6rem;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 2rem;
            letter-spacing: -0.01em;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.15rem;
        }

        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ============ TOP BAR ============ */
        .top-bar-strip {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--bg-darker);
            height: var(--nav-top-height);
            display: flex;
            align-items: center;
            font-size: 0.82rem;
            color: var(--text-light);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .top-bar-strip .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .top-bar-left {
            display: flex;
            align-items: center;
            gap: 18px;
        }
        .top-bar-left span {
            color: #ccc;
        }
        .top-bar-left i {
            color: var(--accent);
            margin-right: 4px;
            font-size: 0.7rem;
        }
        .top-bar-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .top-bar-right a {
            color: #bbb;
            font-size: 0.8rem;
            transition: color var(--transition-fast);
        }
        .top-bar-right a:hover {
            color: #fff;
        }
        .hot-tag {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 2px 8px;
            border-radius: 3px;
            font-size: 0.7rem;
            font-weight: 600;
            animation: pulse-tag 2s infinite;
        }
        @keyframes pulse-tag {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.7;
            }
        }

        /* ============ MAIN NAV ============ */
        .main-nav {
            position: fixed;
            top: var(--nav-top-height);
            left: 0;
            right: 0;
            z-index: 999;
            height: var(--nav-height);
            background: #fff;
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-normal);
        }
        .main-nav.scrolled {
            box-shadow: var(--shadow-lg);
        }
        .main-nav .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .nav-logo {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-logo i {
            font-size: 1.4rem;
            color: var(--accent);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            display: block;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-body);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links li a:hover {
            background: #fef0f0;
            color: var(--primary);
        }
        .nav-links li a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        .nav-search-wrap {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-search {
            position: relative;
        }
        .nav-search input {
            width: 200px;
            height: 38px;
            border: 2px solid var(--border);
            border-radius: var(--radius-full);
            padding: 0 38px 0 16px;
            font-size: 0.85rem;
            font-family: var(--font-body);
            transition: all var(--transition-fast);
            background: #fafafa;
            outline: none;
        }
        .nav-search input:focus {
            border-color: var(--primary);
            background: #fff;
            width: 240px;
            box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.08);
        }
        .nav-search button {
            position: absolute;
            right: 4px;
            top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            color: var(--text-weak);
            padding: 6px 10px;
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }
        .nav-search button:hover {
            color: var(--primary);
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-main);
            padding: 6px;
        }

        /* ============ HERO ============ */
        .hero-section {
            position: relative;
            background: var(--bg-dark);
            min-height: 520px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.35;
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 15, 26, 0.92) 0%, rgba(26, 26, 46, 0.78) 50%, rgba(230, 57, 70, 0.25) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            padding: 60px 0;
            width: 100%;
        }
        .flash-sale-bar {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--primary);
            color: #fff;
            padding: 8px 18px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 0.9rem;
            margin-bottom: 18px;
            animation: flash-pulse 1.5s ease-in-out infinite;
        }
        @keyframes flash-pulse {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(230, 57, 70, 0.6);
            }
            50% {
                box-shadow: 0 0 0 16px rgba(230, 57, 70, 0);
            }
        }
        .flash-sale-bar .countdown {
            display: flex;
            gap: 3px;
            font-size: 0.85rem;
        }
        .flash-sale-bar .countdown span {
            background: #fff;
            color: var(--primary);
            padding: 2px 6px;
            border-radius: 3px;
            font-weight: 800;
            min-width: 24px;
            text-align: center;
        }
        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        .hero-title em {
            font-style: normal;
            color: var(--accent);
        }
        .hero-desc {
            font-size: 1.1rem;
            color: #ccc;
            margin-bottom: 28px;
            max-width: 580px;
            line-height: 1.7;
        }
        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 12px 26px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            transition: all var(--transition-normal);
            white-space: nowrap;
            font-family: var(--font-body);
            letter-spacing: 0.01em;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 18px rgba(230, 57, 70, 0.35);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 24px rgba(230, 57, 70, 0.5);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
        }
        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-accent {
            background: var(--accent);
            color: #1a1a2e;
            box-shadow: 0 4px 18px rgba(244, 162, 97, 0.35);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            color: #1a1a2e;
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 0.82rem;
            border-radius: var(--radius-sm);
        }
        .btn-lg {
            padding: 15px 34px;
            font-size: 1.05rem;
        }
        .hero-product-card {
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-lg);
            padding: 20px;
            display: flex;
            align-items: center;
            gap: 16px;
            max-width: 420px;
            margin-top: 10px;
        }
        .hero-product-card img {
            width: 80px;
            height: 80px;
            border-radius: var(--radius-md);
            object-fit: cover;
            flex-shrink: 0;
        }
        .hero-product-info h4 {
            color: #fff;
            margin: 0 0 4px;
            font-size: 1rem;
        }
        .hero-product-info .price {
            color: var(--accent);
            font-weight: 700;
            font-size: 1.3rem;
        }
        .hero-product-info .old-price {
            color: #999;
            text-decoration: line-through;
            font-size: 0.8rem;
            margin-left: 6px;
        }
        .hero-stats {
            display: flex;
            gap: 30px;
            margin-top: 20px;
            flex-wrap: wrap;
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat .num {
            font-size: 1.7rem;
            font-weight: 800;
            color: #fff;
        }
        .hero-stat .label {
            font-size: 0.78rem;
            color: #aaa;
        }

        /* ============ SECTIONS ============ */
        section {
            padding: 60px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-header .section-tag {
            display: inline-block;
            background: #fef0f0;
            color: var(--primary);
            padding: 5px 14px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.82rem;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }
        .section-header h2 {
            margin-bottom: 8px;
        }
        .section-header .section-subtitle {
            color: var(--text-weak);
            font-size: 0.95rem;
            max-width: 600px;
            margin: 0 auto;
        }
        .bg-alt {
            background: var(--bg-light);
        }
        .bg-dark-section {
            background: var(--bg-dark);
            color: #ddd;
        }
        .bg-dark-section h2,
        .bg-dark-section h3,
        .bg-dark-section h4 {
            color: #fff;
        }
        .bg-dark-section .section-subtitle {
            color: #bbb;
        }

        /* ============ CARDS ============ */
        .card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            border: 1px solid var(--border-light);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: #e0e0e0;
        }
        .card-img {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 14px;
            aspect-ratio: 16/10;
            background: #f0f0f0;
        }
        .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .card:hover .card-img img {
            transform: scale(1.04);
        }
        .card h4 {
            margin-bottom: 6px;
            font-size: 1.05rem;
        }
        .card p {
            color: var(--text-weak);
            font-size: 0.88rem;
            margin-bottom: 0;
            flex-grow: 1;
        }
        .card .card-meta {
            font-size: 0.78rem;
            color: #aaa;
            margin-top: 8px;
        }

        /* ============ VERTICAL FEED ============ */
        .vertical-feed-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-normal);
            aspect-ratio: 9/16;
            max-width: 280px;
            margin: 0 auto;
            position: relative;
            cursor: pointer;
            display: flex;
            flex-direction: column;
        }
        .vertical-feed-card:hover {
            box-shadow: var(--shadow-xl);
            transform: translateY(-6px);
        }
        .vertical-feed-card .vf-img {
            flex: 1;
            overflow: hidden;
            position: relative;
        }
        .vertical-feed-card .vf-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .vertical-feed-card:hover .vf-img img {
            transform: scale(1.06);
        }
        .vertical-feed-card .vf-badge {
            position: absolute;
            top: 10px;
            left: 10px;
            background: var(--primary);
            color: #fff;
            padding: 3px 10px;
            border-radius: var(--radius-full);
            font-size: 0.7rem;
            font-weight: 700;
            z-index: 2;
        }
        .vertical-feed-card .vf-info {
            padding: 12px 14px;
            background: #fff;
            z-index: 1;
        }
        .vertical-feed-card .vf-info h4 {
            font-size: 0.9rem;
            margin: 0 0 4px;
            line-height: 1.3;
        }
        .vertical-feed-card .vf-info .vf-price {
            color: var(--primary);
            font-weight: 700;
            font-size: 1rem;
        }

        /* ============ HOT LIST ============ */
        .hot-list-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 16px 18px;
            background: #fff;
            border-radius: var(--radius-md);
            margin-bottom: 10px;
            transition: all var(--transition-fast);
            border: 1px solid var(--border-light);
            cursor: pointer;
        }
        .hot-list-item:hover {
            box-shadow: var(--shadow-md);
            border-color: #e0e0e0;
            transform: translateX(3px);
        }
        .hot-list-rank {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
            color: #fff;
        }
        .rank-1 {
            background: #e63946;
        }
        .rank-2 {
            background: #f4a261;
        }
        .rank-3 {
            background: #e9c46a;
        }
        .rank-other {
            background: #b2bec3;
        }
        .hot-list-info {
            flex: 1;
            min-width: 0;
        }
        .hot-list-info h4 {
            margin: 0;
            font-size: 0.95rem;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .hot-list-info .hl-desc {
            font-size: 0.78rem;
            color: var(--text-weak);
        }
        .hot-list-price {
            font-weight: 700;
            color: var(--primary);
            font-size: 1.1rem;
            white-space: nowrap;
        }

        /* ============ REVIEW WALL ============ */
        .review-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 22px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-normal);
            height: 100%;
        }
        .review-card:hover {
            box-shadow: var(--shadow-md);
        }
        .review-stars {
            color: #f4a261;
            font-size: 0.9rem;
            margin-bottom: 8px;
        }
        .review-card .review-text {
            font-size: 0.9rem;
            color: var(--text-body);
            line-height: 1.6;
            margin-bottom: 10px;
            font-style: italic;
        }
        .review-card .review-author {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.82rem;
            color: var(--text-weak);
        }
        .review-avatar {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: #e0e0e0;
            flex-shrink: 0;
            overflow: hidden;
        }
        .review-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ============ NEWS ============ */
        .news-list-item {
            display: flex;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid var(--border-light);
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .news-list-item:hover {
            background: #fafafa;
            padding-left: 8px;
            border-radius: 4px;
        }
        .news-date {
            flex-shrink: 0;
            width: 60px;
            text-align: center;
            font-weight: 700;
            color: var(--primary);
            font-size: 0.85rem;
            line-height: 1.3;
        }
        .news-date .day {
            font-size: 1.5rem;
            display: block;
        }
        .news-content h4 {
            margin: 0 0 4px;
            font-size: 0.95rem;
            line-height: 1.4;
        }
        .news-content p {
            font-size: 0.82rem;
            color: var(--text-weak);
            margin: 0;
            line-height: 1.5;
        }
        .news-sidebar {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .news-sidebar h4 {
            font-size: 1rem;
            margin-bottom: 12px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--primary);
        }
        .news-sidebar ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .news-sidebar ul li {
            padding: 8px 0;
            border-bottom: 1px solid #f5f5f5;
            font-size: 0.85rem;
        }
        .news-sidebar ul li a {
            color: var(--text-body);
            transition: color var(--transition-fast);
        }
        .news-sidebar ul li a:hover {
            color: var(--primary);
        }
        .news-sidebar ul li i {
            color: var(--primary);
            margin-right: 6px;
            font-size: 0.7rem;
        }

        /* ============ SCREENSHOT STAGE ============ */
        .screenshot-stage {
            position: relative;
            text-align: center;
        }
        .device-frame {
            display: inline-block;
            background: #2d3436;
            border-radius: 24px;
            padding: 12px;
            box-shadow: var(--shadow-xl);
            max-width: 600px;
            width: 100%;
        }
        .device-frame .screen-area {
            border-radius: 14px;
            overflow: hidden;
            background: #fff;
            aspect-ratio: 16/10;
        }
        .device-frame .screen-area img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .screenshot-dots {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 16px;
        }
        .screenshot-dots .dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #ccc;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .screenshot-dots .dot.active {
            background: var(--primary);
            width: 28px;
            border-radius: 5px;
        }

        /* ============ TIMELINE ============ */
        .timeline {
            position: relative;
            padding-left: 30px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 14px;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--primary);
            border-radius: 2px;
            opacity: 0.3;
        }
        .timeline-item {
            position: relative;
            margin-bottom: 28px;
            padding-left: 24px;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -22px;
            top: 6px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid #fff;
            box-shadow: 0 0 0 4px rgba(230, 57, 70, 0.2);
            z-index: 2;
        }
        .timeline-time {
            font-weight: 700;
            color: var(--primary);
            font-size: 0.85rem;
            margin-bottom: 4px;
        }
        .timeline-item h4 {
            margin: 0 0 4px;
        }
        .timeline-item p {
            font-size: 0.88rem;
            color: var(--text-weak);
            margin: 0;
        }

        /* ============ FAQ ============ */
        .faq-item {
            border-bottom: 1px solid var(--border-light);
            padding: 16px 0;
            cursor: pointer;
        }
        .faq-question {
            font-weight: 600;
            font-size: 1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-main);
        }
        .faq-question i {
            transition: transform var(--transition-fast);
            color: var(--text-weak);
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-normal);
            font-size: 0.9rem;
            color: var(--text-weak);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-top: 10px;
        }

        /* ============ FLOAT BAR ============ */
        .float-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 998;
            background: #fff;
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.12);
            padding: 10px 0;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            transform: translateY(100%);
            transition: transform var(--transition-normal);
        }
        .float-bar.visible {
            transform: translateY(0);
        }
        .float-bar .float-msg {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-main);
        }
        .float-bar .float-price {
            color: var(--primary);
            font-weight: 800;
            font-size: 1.2rem;
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--bg-darker);
            color: #bbb;
            padding: 50px 0 30px;
            font-size: 0.85rem;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        .site-footer h4 {
            color: #fff;
            font-size: 0.95rem;
            margin-bottom: 12px;
        }
        .site-footer ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .site-footer ul li {
            margin-bottom: 6px;
        }
        .site-footer ul li a {
            color: #999;
            font-size: 0.82rem;
            transition: color var(--transition-fast);
        }
        .site-footer ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.78rem;
            color: #888;
            line-height: 2;
        }
        .footer-bottom a {
            color: #bbb;
            margin: 0 6px;
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        .footer-logo {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 8px;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            h1 {
                font-size: 2.1rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .nav-search input {
                width: 150px;
            }
            .nav-search input:focus {
                width: 180px;
            }
            .hero-product-card {
                max-width: 100%;
            }
            .device-frame {
                max-width: 480px;
            }
            section {
                padding: 45px 0;
            }
        }
        @media (max-width: 768px) {
            body {
                padding-top: 96px;
            }
            .top-bar-strip {
                height: 34px;
                font-size: 0.7rem;
            }
            .main-nav {
                top: 34px;
                height: 56px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 56px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 10px 20px;
                box-shadow: var(--shadow-lg);
                border-radius: 0 0 12px 12px;
                z-index: 100;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li a {
                padding: 10px 14px;
                border-radius: 8px;
                width: 100%;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-search input {
                width: 120px;
                font-size: 0.8rem;
            }
            .nav-search input:focus {
                width: 150px;
            }
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-desc {
                font-size: 0.9rem;
            }
            .hero-stats {
                gap: 16px;
            }
            .hero-stat .num {
                font-size: 1.3rem;
            }
            .btn {
                padding: 10px 18px;
                font-size: 0.85rem;
            }
            .vertical-feed-card {
                max-width: 200px;
            }
            section {
                padding: 35px 0;
            }
            .section-header {
                margin-bottom: 28px;
            }
            .device-frame {
                max-width: 100%;
                border-radius: 16px;
                padding: 8px;
            }
            .device-frame .screen-area {
                border-radius: 8px;
            }
            .float-bar {
                padding: 8px 12px;
                gap: 8px;
            }
            .float-bar .float-msg {
                font-size: 0.78rem;
            }
            .float-bar .float-price {
                font-size: 1rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 520px) {
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.3rem;
            }
            .hero-title {
                font-size: 1.4rem;
            }
            .hero-desc {
                font-size: 0.82rem;
            }
            .hero-stats {
                gap: 10px;
            }
            .hero-stat .num {
                font-size: 1.1rem;
            }
            .hero-product-card {
                flex-direction: column;
                text-align: center;
                padding: 14px;
            }
            .hero-product-card img {
                width: 60px;
                height: 60px;
            }
            .btn {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
            .btn-lg {
                padding: 12px 22px;
                font-size: 0.9rem;
            }
            .vertical-feed-card {
                max-width: 160px;
            }
            .hot-list-item {
                padding: 12px;
                gap: 8px;
            }
            .hot-list-rank {
                width: 28px;
                height: 28px;
                font-size: 0.8rem;
            }
            .news-list-item {
                flex-direction: column;
                gap: 6px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
            }
            .float-bar {
                flex-direction: column;
                text-align: center;
                gap: 4px;
            }
            .top-bar-right {
                gap: 6px;
                font-size: 0.65rem;
            }
            .top-bar-left span {
                font-size: 0.65rem;
            }
        }

        /* ============ UTILS ============ */
        .text-center {
            text-align: center;
        }
        .text-primary {
            color: var(--primary);
        }
        .text-accent {
            color: var(--accent);
        }
        .fw-bold {
            font-weight: 700;
        }
        .mt-0 {
            margin-top: 0;
        }
        .mt-2 {
            margin-top: 16px;
        }
        .mt-3 {
            margin-top: 24px;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .mb-2 {
            margin-bottom: 16px;
        }
        .mb-3 {
            margin-bottom: 24px;
        }
        .gap-2 {
            gap: 16px;
        }
        .gap-3 {
            gap: 24px;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .d-flex {
            display: flex;
        }
        .align-center {
            align-items: center;
        }
        .justify-between {
            justify-content: space-between;
        }
        .w-100 {
            width: 100%;
        }

        /* custom grid gap */
        .grid-gap-sm {
            gap: 14px;
        }
        .grid-gap-md {
            gap: 20px;
        }
        .grid-gap-lg {
            gap: 30px;
        }

        .badge-hot {
            display: inline-block;
            background: #e63946;
            color: #fff;
            padding: 3px 8px;
            border-radius: 3px;
            font-size: 0.68rem;
            font-weight: 700;
            vertical-align: middle;
            margin-left: 4px;
        }
        .tag-chip {
            display: inline-block;
            padding: 5px 12px;
            border-radius: var(--radius-full);
            font-size: 0.78rem;
            font-weight: 500;
            background: #f0f0f0;
            color: var(--text-body);
            transition: all var(--transition-fast);
            cursor: pointer;
            margin: 3px;
        }
        .tag-chip:hover {
            background: var(--primary);
            color: #fff;
        }
        .tag-chip.active {
            background: var(--primary);
            color: #fff;
        }

/* roulang page: category1 */
:root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --accent: #f4a261;
            --accent-dark: #e07b3c;
            --bg-dark: #1a1a2e;
            --bg-darker: #0f0f1a;
            --bg-card: #16213e;
            --bg-light: #f8f9fa;
            --bg-white: #ffffff;
            --text-main: #1a1a2e;
            --text-body: #2d3436;
            --text-weak: #636e72;
            --text-light: #b2bec3;
            --text-white: #f8f9fa;
            --border: #dfe6e9;
            --border-light: #f0f0f0;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.14);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.18);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 22px;
            --radius-full: 50px;
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', 'Segoe UI', sans-serif;
            --max-width: 1240px;
            --nav-height: 64px;
            --nav-top-height: 40px;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-body);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: 104px;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            text-decoration: none;
        }

        button {
            cursor: pointer;
            font-family: var(--font-body);
        }

        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ============ TOP BAR ============ */
        .top-bar-strip {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-top-height);
            background: var(--bg-darker);
            color: #bbb;
            font-size: 0.78rem;
            display: flex;
            align-items: center;
        }

        .top-bar-strip .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .top-bar-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .top-bar-right a {
            color: #bbb;
            font-size: 0.8rem;
            transition: color var(--transition-fast);
        }

        .top-bar-right a:hover {
            color: #fff;
        }

        .hot-tag {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 2px 8px;
            border-radius: 3px;
            font-size: 0.7rem;
            font-weight: 600;
            animation: pulse-tag 2s infinite;
        }

        @keyframes pulse-tag {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.7;
            }
        }

        /* ============ MAIN NAV ============ */
        .main-nav {
            position: fixed;
            top: var(--nav-top-height);
            left: 0;
            right: 0;
            z-index: 999;
            height: var(--nav-height);
            background: #fff;
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-normal);
        }

        .main-nav.scrolled {
            box-shadow: var(--shadow-lg);
        }

        .main-nav .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .nav-logo {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-logo i {
            font-size: 1.4rem;
            color: var(--accent);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            display: block;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-body);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-links li a:hover {
            background: #fef0f0;
            color: var(--primary);
        }

        .nav-links li a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .nav-search-wrap {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-search {
            position: relative;
        }

        .nav-search input {
            width: 200px;
            height: 38px;
            border: 2px solid var(--border);
            border-radius: var(--radius-full);
            padding: 0 38px 0 16px;
            font-size: 0.85rem;
            font-family: var(--font-body);
            transition: all var(--transition-fast);
            background: #fafafa;
            outline: none;
        }

        .nav-search input:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.08);
        }

        .nav-search button {
            position: absolute;
            right: 4px;
            top: 50%;
            transform: translateY(-50%);
            background: var(--primary);
            color: #fff;
            border: none;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            font-size: 0.8rem;
            transition: all var(--transition-fast);
        }

        .nav-search button:hover {
            background: var(--primary-dark);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--text-body);
            padding: 6px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            background: #f5f5f5;
            color: var(--primary);
        }

        /* ============ HERO CREATOR STYLE ============ */
        .hero-creator {
            position: relative;
            background: linear-gradient(170deg, #1a1a2e 0%, #16213e 40%, #0f0f1a 100%);
            min-height: 520px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .hero-creator-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.25;
            z-index: 0;
        }

        .hero-creator-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(26, 26, 46, 0.7) 0%, rgba(15, 15, 26, 0.9) 100%);
            z-index: 1;
        }

        .hero-creator .container-custom {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 48px;
            flex-wrap: wrap;
        }

        .hero-creator-avatar-wrap {
            flex-shrink: 0;
            position: relative;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            border: 4px solid rgba(255, 255, 255, 0.25);
            overflow: hidden;
            box-shadow: var(--shadow-xl);
            background: var(--bg-card);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-creator-avatar-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 50%;
        }

        .hero-creator-avatar-badge {
            position: absolute;
            bottom: 4px;
            right: 4px;
            width: 28px;
            height: 28px;
            background: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 3px solid #1a1a2e;
            font-size: 0.65rem;
            color: #fff;
        }

        .hero-creator-info {
            flex: 1;
            min-width: 240px;
        }

        .hero-creator-name {
            font-family: var(--font-heading);
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            margin: 0 0 6px 0;
            letter-spacing: -0.02em;
        }

        .hero-creator-tagline {
            font-size: 1.05rem;
            color: #ccc;
            margin: 0 0 16px 0;
            line-height: 1.5;
        }

        .hero-creator-stats {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }

        .hero-stat-item {
            text-align: center;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            padding: 12px 18px;
            min-width: 80px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all var(--transition-normal);
        }

        .hero-stat-item:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.25);
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }

        .hero-stat-value {
            display: block;
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
        }

        .hero-stat-label {
            display: block;
            font-size: 0.75rem;
            color: #aaa;
            margin-top: 2px;
        }

        .hero-creator-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .btn-primary-lg {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 12px 28px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 1rem;
            border: none;
            transition: all var(--transition-normal);
            box-shadow: 0 4px 18px rgba(230, 57, 70, 0.4);
        }

        .btn-primary-lg:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 24px rgba(230, 57, 70, 0.55);
            transform: translateY(-1px);
            color: #fff;
        }

        .btn-outline-lg {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            padding: 12px 28px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.4);
            transition: all var(--transition-normal);
        }

        .btn-outline-lg:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }

        .hero-live-indicator {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(230, 57, 70, 0.2);
            color: #ff6b6b;
            padding: 6px 14px;
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 600;
            border: 1px solid rgba(230, 57, 70, 0.35);
            margin-bottom: 14px;
            animation: live-pulse 1.5s infinite;
        }

        @keyframes live-pulse {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(230, 57, 70, 0.5);
            }
            50% {
                box-shadow: 0 0 0 12px rgba(230, 57, 70, 0);
            }
        }

        .hero-live-dot {
            width: 10px;
            height: 10px;
            background: #ff4444;
            border-radius: 50%;
            animation: blink-dot 1s infinite;
        }

        @keyframes blink-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.3;
            }
        }

        /* ============ SECTION COMMON ============ */
        .section-padding {
            padding: 70px 0;
        }

        .section-padding-sm {
            padding: 50px 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }

        .section-header h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 10px 0;
        }

        .section-header p {
            font-size: 1rem;
            color: var(--text-weak);
            max-width: 600px;
            margin: 0 auto;
        }

        .section-label {
            display: inline-block;
            background: #fef0f0;
            color: var(--primary);
            padding: 4px 14px;
            border-radius: var(--radius-full);
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }

        /* ============ CARDS ============ */
        .card-modern {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-normal);
            height: 100%;
        }

        .card-modern:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }

        .card-modern-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }

        .card-modern-body {
            padding: 20px;
        }

        .card-modern-body h3 {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 8px 0;
        }

        .card-modern-body p {
            font-size: 0.9rem;
            color: var(--text-weak);
            margin: 0 0 14px 0;
            line-height: 1.6;
        }

        .card-tag {
            display: inline-block;
            background: #fef0f0;
            color: var(--primary);
            padding: 3px 10px;
            border-radius: var(--radius-full);
            font-size: 0.75rem;
            font-weight: 600;
        }

        .card-tag.accent {
            background: #fff8f0;
            color: var(--accent-dark);
        }

        .card-tag.blue {
            background: #f0f4ff;
            color: #3b6df0;
        }

        /* ============ FEATURE GRID ============ */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .feature-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid var(--border-light);
            transition: all var(--transition-normal);
            text-align: center;
        }

        .feature-card:hover {
            box-shadow: var(--shadow-md);
            border-color: transparent;
            transform: translateY(-3px);
        }

        .feature-icon-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.5rem;
            color: #fff;
            background: var(--primary);
            transition: all var(--transition-normal);
        }

        .feature-card:hover .feature-icon-circle {
            transform: scale(1.08);
            box-shadow: 0 8px 28px rgba(230, 57, 70, 0.35);
        }

        .feature-card h3 {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 8px 0;
        }

        .feature-card p {
            font-size: 0.88rem;
            color: var(--text-weak);
            margin: 0;
            line-height: 1.6;
        }

        /* ============ STEPS ============ */
        .steps-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            counter-reset: step-counter;
            max-width: 800px;
            margin: 0 auto;
        }

        .step-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-light);
            counter-increment: step-counter;
            transition: all var(--transition-fast);
        }

        .step-item:last-child {
            border-bottom: none;
        }

        .step-number {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .step-content h4 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 4px 0;
        }

        .step-content p {
            font-size: 0.9rem;
            color: var(--text-weak);
            margin: 0;
            line-height: 1.6;
        }

        /* ============ STATS BAR ============ */
        .stats-bar {
            background: var(--bg-dark);
            padding: 40px 0;
        }

        .stats-bar-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 20px;
            text-align: center;
        }

        .stats-bar-item .stat-num {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .stats-bar-item .stat-desc {
            font-size: 0.85rem;
            color: #aaa;
            margin-top: 4px;
        }

        /* ============ TESTIMONIAL ============ */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .testimonial-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 24px;
            border: 1px solid var(--border-light);
            transition: all var(--transition-normal);
            position: relative;
        }

        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }

        .testimonial-card::before {
            content: '\201C';
            font-size: 4rem;
            color: #f0f0f0;
            position: absolute;
            top: 10px;
            left: 18px;
            line-height: 1;
            font-family: serif;
            pointer-events: none;
        }

        .testimonial-text {
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.7;
            margin: 0 0 14px 0;
            position: relative;
            z-index: 1;
        }

        .testimonial-author {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-main);
        }

        .testimonial-role {
            font-size: 0.78rem;
            color: var(--text-weak);
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-light);
            padding: 18px 0;
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .faq-item:first-child {
            border-top: 1px solid var(--border-light);
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-main);
            gap: 16px;
        }

        .faq-question i {
            transition: transform var(--transition-fast);
            color: var(--text-weak);
            font-size: 0.85rem;
            flex-shrink: 0;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            font-size: 0.9rem;
            color: var(--text-weak);
            line-height: 1.7;
            padding-top: 0;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-top: 10px;
        }

        /* ============ CTA ============ */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-dark) 0%, #1a1a3e 100%);
            padding: 60px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            z-index: 0;
        }

        .cta-section .container-custom {
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px 0;
        }

        .cta-section p {
            font-size: 1.05rem;
            color: #ccc;
            margin: 0 auto 24px;
            max-width: 550px;
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--bg-darker);
            color: #bbb;
            padding: 50px 0 24px;
            font-size: 0.88rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-logo {
            font-family: var(--font-heading);
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
        }

        .site-footer h4 {
            font-family: var(--font-heading);
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px 0;
        }

        .site-footer ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .site-footer ul li {
            margin-bottom: 6px;
        }

        .site-footer ul li a {
            color: #999;
            font-size: 0.82rem;
            transition: color var(--transition-fast);
        }

        .site-footer ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.78rem;
            color: #777;
            line-height: 2;
        }

        .footer-bottom a {
            color: #999;
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .nav-links li a {
                padding: 6px 10px;
                font-size: 0.8rem;
            }
            .nav-search input {
                width: 150px;
            }
            .hero-creator .container-custom {
                gap: 28px;
            }
            .hero-creator-name {
                font-size: 1.8rem;
            }
            .hero-creator-avatar-wrap {
                width: 110px;
                height: 110px;
            }
            .section-padding {
                padding: 50px 0;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 768px) {
            body {
                padding-top: 96px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 12px 20px;
                box-shadow: var(--shadow-lg);
                gap: 2px;
                z-index: 998;
            }
            .nav-links.show {
                display: flex;
            }
            .nav-links li a {
                padding: 10px 16px;
                border-radius: var(--radius-sm);
                width: 100%;
            }
            .nav-search input {
                width: 130px;
                font-size: 0.8rem;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .hero-creator .container-custom {
                flex-direction: column;
                text-align: center;
                gap: 20px;
                padding: 40px 20px;
            }
            .hero-creator-avatar-wrap {
                width: 100px;
                height: 100px;
                margin: 0 auto;
            }
            .hero-creator-name {
                font-size: 1.6rem;
            }
            .hero-creator-stats {
                justify-content: center;
            }
            .hero-creator-actions {
                justify-content: center;
            }
            .hero-stat-item {
                min-width: 70px;
                padding: 10px 14px;
            }
            .hero-stat-value {
                font-size: 1.3rem;
            }
            .section-padding {
                padding: 40px 0;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .stats-bar-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stats-bar-item .stat-num {
                font-size: 1.8rem;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .nav-search input {
                width: 100px;
                padding: 0 30px 0 10px;
                font-size: 0.75rem;
            }
            .hero-creator-name {
                font-size: 1.35rem;
            }
            .hero-creator-tagline {
                font-size: 0.9rem;
            }
            .hero-creator-stats {
                gap: 10px;
            }
            .hero-stat-item {
                padding: 8px 10px;
                min-width: 60px;
            }
            .hero-stat-value {
                font-size: 1.1rem;
            }
            .hero-stat-label {
                font-size: 0.68rem;
            }
            .btn-primary-lg,
            .btn-outline-lg {
                padding: 10px 20px;
                font-size: 0.9rem;
            }
            .section-header h2 {
                font-size: 1.25rem;
            }
            .stats-bar-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .card-modern-img {
                height: 160px;
            }
            .step-item {
                flex-direction: column;
                gap: 10px;
            }
            .step-number {
                width: 36px;
                height: 36px;
                font-size: 0.95rem;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --accent: #f4a261;
            --accent-dark: #e07b3c;
            --bg-dark: #1a1a2e;
            --bg-darker: #0f0f1a;
            --bg-card: #16213e;
            --bg-light: #f8f9fa;
            --bg-white: #ffffff;
            --text-main: #1a1a2e;
            --text-body: #2d3436;
            --text-weak: #636e72;
            --text-light: #b2bec3;
            --text-white: #f8f9fa;
            --border: #dfe6e9;
            --border-light: #f0f0f0;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.14);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.18);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 22px;
            --radius-full: 50px;
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', 'Segoe UI', sans-serif;
            --max-width: 1240px;
            --nav-height: 64px;
            --nav-top-height: 40px;
            --float-bar-height: 60px;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-body);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: 104px;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            text-decoration: none;
        }

        button {
            cursor: pointer;
            font-family: var(--font-body);
        }

        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ============ TOP BAR ============ */
        .top-bar-strip {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-top-height);
            background: var(--bg-darker);
            display: flex;
            align-items: center;
            font-size: 0.78rem;
            color: #aaa;
        }

        .top-bar-strip .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .top-bar-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .top-bar-right a {
            color: #bbb;
            font-size: 0.78rem;
            transition: color var(--transition-fast);
        }

        .top-bar-right a:hover {
            color: #fff;
        }

        .hot-tag {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 2px 8px;
            border-radius: 3px;
            font-size: 0.7rem;
            font-weight: 600;
            animation: pulse-tag 2s infinite;
        }

        @keyframes pulse-tag {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.7;
            }
        }

        /* ============ MAIN NAV ============ */
        .main-nav {
            position: fixed;
            top: var(--nav-top-height);
            left: 0;
            right: 0;
            z-index: 999;
            height: var(--nav-height);
            background: #fff;
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-normal);
        }

        .main-nav.scrolled {
            box-shadow: var(--shadow-lg);
        }

        .main-nav .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .nav-logo {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-logo i {
            font-size: 1.4rem;
            color: var(--accent);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            display: block;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-body);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-links li a:hover {
            background: #fef0f0;
            color: var(--primary);
        }

        .nav-links li a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .nav-search-wrap {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-search {
            position: relative;
        }

        .nav-search input {
            width: 200px;
            height: 38px;
            border: 2px solid var(--border);
            border-radius: var(--radius-full);
            padding: 0 38px 0 16px;
            font-size: 0.85rem;
            font-family: var(--font-body);
            transition: all var(--transition-fast);
            background: #fafafa;
            outline: none;
        }

        .nav-search input:focus {
            border-color: var(--primary-light);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(230, 57, 70, 0.08);
        }

        .nav-search button {
            position: absolute;
            right: 4px;
            top: 50%;
            transform: translateY(-50%);
            background: var(--primary);
            color: #fff;
            border: none;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            font-size: 0.8rem;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background var(--transition-fast);
        }

        .nav-search button:hover {
            background: var(--primary-dark);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--text-body);
            padding: 6px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            background: #f5f5f5;
            color: var(--primary);
        }

        /* ============ HERO ============ */
        .hero-section {
            position: relative;
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 40%, #0f1a2e 100%);
            padding: 70px 0 80px;
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 55%;
            height: 100%;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.35;
            mask-image: linear-gradient(to left, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0.15) 100%);
            -webkit-mask-image: linear-gradient(to left, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0.15) 100%);
            z-index: 0;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, rgba(255, 255, 255, 0.03) 0%, transparent 100%);
            z-index: 0;
        }

        .hero-section .container-custom {
            position: relative;
            z-index: 1;
        }

        .hero-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(230, 57, 70, 0.2);
            color: #ff6b6b;
            padding: 6px 16px;
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 20px;
            border: 1px solid rgba(230, 57, 70, 0.3);
            letter-spacing: 0.03em;
        }

        .hero-badge i {
            margin-right: 6px;
            animation: pulse-tag 2s infinite;
        }

        .hero-title {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .hero-title span {
            color: var(--primary-light);
            position: relative;
        }

        .hero-title span::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--accent);
            border-radius: 2px;
            opacity: 0.7;
        }

        .hero-subtitle {
            font-size: 1.1rem;
            color: #c0c7d0;
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 480px;
        }

        .hero-cta-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 30px;
        }

        .btn-primary-lg {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-full);
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition-normal);
            box-shadow: 0 6px 20px rgba(230, 57, 70, 0.35);
            white-space: nowrap;
            text-decoration: none;
        }

        .btn-primary-lg:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(230, 57, 70, 0.45);
            color: #fff;
        }

        .btn-outline-lg {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
            border-radius: var(--radius-full);
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition-normal);
            white-space: nowrap;
            text-decoration: none;
        }

        .btn-outline-lg:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            transform: translateY(-2px);
        }

        .hero-trust-strip {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            font-size: 0.85rem;
            color: #a0a8b4;
        }

        .hero-trust-strip span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero-trust-strip i {
            color: var(--accent);
            font-size: 0.9rem;
        }

        .hero-visual-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 28px;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }

        .hero-visual-card img {
            border-radius: var(--radius-md);
            width: 100%;
            height: auto;
            margin-bottom: 16px;
        }

        .hero-visual-stats {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }

        .hero-stat-item {
            text-align: center;
            flex: 1;
            min-width: 70px;
        }

        .hero-stat-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            font-family: var(--font-heading);
        }

        .hero-stat-label {
            font-size: 0.75rem;
            color: #a0a8b4;
            margin-top: 2px;
        }

        /* ============ SECTION COMMON ============ */
        .section-block {
            padding: 60px 0;
        }

        .section-block-alt {
            padding: 60px 0;
            background: var(--bg-light);
        }

        .section-block-dark {
            padding: 60px 0;
            background: var(--bg-dark);
            color: #d0d6e0;
        }

        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 700;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 10px;
            background: #fef0f0;
            padding: 4px 14px;
            border-radius: var(--radius-full);
        }

        .section-title {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
            line-height: 1.3;
            letter-spacing: -0.01em;
        }

        .section-title-light {
            color: #fff;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-weak);
            max-width: 680px;
            line-height: 1.7;
            margin-bottom: 32px;
        }

        .section-desc-light {
            color: #b0b8c4;
        }

        /* ============ CARDS ============ */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .card-grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .card-grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .info-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }

        .info-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }

        .info-card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 16px;
            background: #fef0f0;
            color: var(--primary);
        }

        .info-card-icon.alt {
            background: #fff3e0;
            color: var(--accent);
        }

        .info-card h3 {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .info-card p {
            font-size: 0.9rem;
            color: var(--text-weak);
            line-height: 1.6;
            margin: 0;
        }

        .info-card .card-img {
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        /* ============ NEWS CARD ============ */
        .news-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }

        .news-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

        .news-card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .news-card-date {
            font-size: 0.78rem;
            color: var(--text-weak);
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .news-card-date i {
            color: var(--primary-light);
            font-size: 0.7rem;
        }

        .news-card-title {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .news-card-summary {
            font-size: 0.85rem;
            color: var(--text-weak);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 12px;
        }

        .news-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--primary);
            transition: all var(--transition-fast);
            align-self: flex-start;
        }

        .news-card-link:hover {
            color: var(--primary-dark);
            gap: 10px;
        }

        .news-card-link i {
            font-size: 0.75rem;
            transition: transform var(--transition-fast);
        }

        .news-card-link:hover i {
            transform: translateX(3px);
        }

        /* ============ STATS STRIP ============ */
        .stats-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }

        .stat-block {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-normal);
        }

        .stat-block:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .stat-num {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            font-family: var(--font-heading);
            line-height: 1;
            margin-bottom: 6px;
        }

        .stat-num sup {
            font-size: 1.2rem;
            font-weight: 600;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-weak);
            font-weight: 500;
        }

        /* ============ FLOW / STEPS ============ */
        .flow-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .flow-step {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .flow-step-num {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.4rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-family: var(--font-heading);
            box-shadow: 0 6px 18px rgba(230, 57, 70, 0.3);
            position: relative;
            z-index: 2;
        }

        .flow-step h4 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .flow-step p {
            font-size: 0.85rem;
            color: var(--text-weak);
            line-height: 1.5;
            margin: 0;
        }

        .flow-connector {
            position: absolute;
            top: 28px;
            left: calc(25% + 28px);
            width: calc(50% - 56px);
            height: 3px;
            background: linear-gradient(to right, var(--primary-light), var(--accent));
            border-radius: 2px;
            z-index: 0;
            opacity: 0.5;
        }

        /* ============ BRAND INTRO ============ */
        .brand-intro-block {
            display: grid;
            grid-template-columns: 1fr 1.3fr;
            gap: 40px;
            align-items: center;
            background: #fff;
            border-radius: var(--radius-xl);
            padding: 40px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-light);
        }

        .brand-intro-block img {
            border-radius: var(--radius-lg);
            width: 100%;
            height: 280px;
            object-fit: cover;
        }

        .brand-intro-text h3 {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 14px;
        }

        .brand-intro-text p {
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 10px;
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-sm);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }

        .faq-question {
            padding: 18px 22px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-main);
            font-family: var(--font-heading);
            transition: color var(--transition-fast);
            background: #fff;
            border: none;
            width: 100%;
            text-align: left;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question i {
            font-size: 0.85rem;
            color: var(--text-weak);
            transition: transform var(--transition-fast);
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-normal), padding var(--transition-normal);
            padding: 0 22px;
            font-size: 0.9rem;
            color: var(--text-weak);
            line-height: 1.7;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }

        /* ============ CTA ============ */
        .cta-section {
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f1a2e 100%);
            padding: 60px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(230, 57, 70, 0.25) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 0;
        }

        .cta-section .container-custom {
            position: relative;
            z-index: 1;
        }

        .cta-title {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-desc {
            color: #c0c7d0;
            font-size: 1.05rem;
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-btn-group {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--bg-darker);
            color: #bbb;
            padding: 50px 0 0;
            font-size: 0.88rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 30px;
            margin-bottom: 30px;
        }

        .footer-logo {
            font-family: var(--font-heading);
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
        }

        .site-footer h4 {
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .site-footer ul li {
            margin-bottom: 8px;
        }

        .site-footer ul li a {
            color: #999;
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }

        .site-footer ul li a:hover {
            color: #fff;
        }

        .site-footer ul li a i {
            width: 18px;
            text-align: center;
            margin-right: 6px;
            color: var(--text-light);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            text-align: center;
            font-size: 0.78rem;
            color: #777;
            line-height: 2;
        }

        .footer-bottom a {
            color: #999;
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .hero-visual-card {
                max-width: 500px;
            }
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-strip {
                grid-template-columns: repeat(2, 1fr);
            }
            .flow-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .flow-connector {
                display: none;
            }
            .brand-intro-block {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .nav-links {
                gap: 2px;
            }
            .nav-links li a {
                padding: 8px 10px;
                font-size: 0.8rem;
            }
            .nav-search input {
                width: 150px;
            }
        }

        @media (max-width: 768px) {
            body {
                padding-top: 96px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 16px;
                box-shadow: var(--shadow-lg);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
                gap: 4px;
                z-index: 998;
            }
            .nav-links.show {
                display: flex;
            }
            .nav-links li a {
                width: 100%;
                text-align: center;
                padding: 12px;
                border-radius: var(--radius-md);
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-search input {
                width: 130px;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-subtitle {
                font-size: 0.95rem;
            }
            .card-grid,
            .card-grid-2 {
                grid-template-columns: 1fr;
            }
            .card-grid-4 {
                grid-template-columns: 1fr 1fr;
            }
            .stats-strip {
                grid-template-columns: 1fr 1fr;
            }
            .flow-steps {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .hero-cta-group {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-trust-strip {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .brand-intro-block {
                padding: 24px;
            }
            .cta-title {
                font-size: 1.5rem;
            }
            .news-card-img {
                height: 160px;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.5rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .card-grid-4 {
                grid-template-columns: 1fr;
            }
            .stats-strip {
                grid-template-columns: 1fr;
            }
            .nav-search input {
                width: 100px;
            }
            .hero-section {
                padding: 40px 0 50px;
                min-height: auto;
            }
            .section-block,
            .section-block-alt,
            .section-block-dark {
                padding: 40px 0;
            }
            .stat-num {
                font-size: 1.8rem;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --accent: #f4a261;
            --accent-dark: #e07b3c;
            --bg-dark: #1a1a2e;
            --bg-darker: #0f0f1a;
            --bg-card: #16213e;
            --bg-light: #f8f9fa;
            --bg-white: #ffffff;
            --text-main: #1a1a2e;
            --text-body: #2d3436;
            --text-weak: #636e72;
            --text-light: #b2bec3;
            --text-white: #f8f9fa;
            --border: #dfe6e9;
            --border-light: #f0f0f0;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.14);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.18);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 22px;
            --radius-full: 50px;
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', 'Segoe UI', sans-serif;
            --max-width: 1240px;
            --nav-height: 64px;
            --nav-top-height: 40px;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-body);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: 104px;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            text-decoration: none;
        }

        button {
            cursor: pointer;
            font-family: var(--font-body);
        }

        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ============ TOP BAR ============ */
        .top-bar-strip {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-top-height);
            background: var(--bg-darker);
            display: flex;
            align-items: center;
            font-size: 0.78rem;
            color: #aaa;
        }

        .top-bar-strip .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .top-bar-left {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .top-bar-left span {
            color: #ccc;
        }

        .top-bar-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .top-bar-right a {
            color: #bbb;
            font-size: 0.78rem;
            transition: color var(--transition-fast);
        }

        .top-bar-right a:hover {
            color: #fff;
        }

        .hot-tag {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 2px 8px;
            border-radius: 3px;
            font-size: 0.7rem;
            font-weight: 600;
            animation: pulse-tag 2s infinite;
        }

        @keyframes pulse-tag {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.7;
            }
        }

        /* ============ MAIN NAV ============ */
        .main-nav {
            position: fixed;
            top: var(--nav-top-height);
            left: 0;
            right: 0;
            z-index: 999;
            height: var(--nav-height);
            background: #fff;
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-normal);
        }

        .main-nav.scrolled {
            box-shadow: var(--shadow-lg);
        }

        .main-nav .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .nav-logo {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-logo i {
            font-size: 1.4rem;
            color: var(--accent);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            display: block;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-body);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-links li a:hover {
            background: #fef0f0;
            color: var(--primary);
        }

        .nav-links li a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .nav-search-wrap {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-search {
            position: relative;
        }

        .nav-search input {
            width: 200px;
            height: 38px;
            border: 2px solid var(--border);
            border-radius: var(--radius-full);
            padding: 0 38px 0 16px;
            font-size: 0.85rem;
            font-family: var(--font-body);
            transition: all var(--transition-fast);
            background: #fafafa;
            outline: none;
        }

        .nav-search input:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.08);
        }

        .nav-search button {
            position: absolute;
            right: 4px;
            top: 50%;
            transform: translateY(-50%);
            background: var(--primary);
            color: #fff;
            border: none;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            font-size: 0.8rem;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background var(--transition-fast);
        }

        .nav-search button:hover {
            background: var(--primary-dark);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--text-body);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            background: #f5f5f5;
            color: var(--primary);
        }

        /* ============ BUTTONS ============ */
        .btn-primary {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 12px 28px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            transition: all var(--transition-normal);
            box-shadow: var(--shadow-sm);
            text-align: center;
            cursor: pointer;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-outline {
            display: inline-block;
            background: transparent;
            color: var(--primary);
            padding: 11px 26px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.95rem;
            border: 2px solid var(--primary);
            transition: all var(--transition-normal);
            text-align: center;
            cursor: pointer;
        }

        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .btn-accent {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 12px 28px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            transition: all var(--transition-normal);
            box-shadow: var(--shadow-sm);
            text-align: center;
            cursor: pointer;
        }

        .btn-accent:hover {
            background: var(--accent-dark);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-lg {
            padding: 14px 36px;
            font-size: 1.05rem;
        }

        /* ============ SECTION TITLES ============ */
        .section-title {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 0.5rem;
            letter-spacing: -0.01em;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-weak);
            max-width: 640px;
            line-height: 1.6;
        }

        .section-header {
            margin-bottom: 2.5rem;
        }

        .section-header.centered {
            text-align: center;
        }

        .section-header.centered .section-subtitle {
            margin: 0 auto;
        }

        /* ============ HERO BANNER ============ */
        .hero-banner {
            position: relative;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            min-height: 420px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .hero-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 26, 46, 0.88) 0%, rgba(22, 33, 62, 0.78) 50%, rgba(15, 15, 26, 0.9) 100%);
            z-index: 1;
        }

        .hero-banner-content {
            position: relative;
            z-index: 2;
            padding: 50px 0;
            width: 100%;
        }

        .hero-banner-content h1 {
            font-family: var(--font-heading);
            font-size: 2.5rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.75rem;
            letter-spacing: -0.02em;
            line-height: 1.25;
        }

        .hero-banner-content .hero-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            line-height: 1.7;
            margin-bottom: 1.5rem;
        }

        .hero-banner-content .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .hero-stat-row {
            display: flex;
            gap: 32px;
            margin-top: 1.5rem;
            flex-wrap: wrap;
        }

        .hero-stat-item {
            text-align: left;
        }

        .hero-stat-item .stat-num {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1;
        }

        .hero-stat-item .stat-label {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }

        /* ============ SECTION SPACING ============ */
        .section-padding {
            padding: 70px 0;
        }

        .section-padding-sm {
            padding: 50px 0;
        }

        .section-padding-lg {
            padding: 90px 0;
        }

        .bg-light-section {
            background: var(--bg-light);
        }

        .bg-dark-section {
            background: var(--bg-dark);
            color: var(--text-white);
        }

        .bg-dark-section .section-title {
            color: #fff;
        }

        .bg-dark-section .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ============ CARDS ============ */
        .card-feature {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            border: 1px solid var(--border-light);
            height: 100%;
            position: relative;
            overflow: hidden;
        }

        .card-feature:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }

        .card-feature .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 1rem;
            background: #fef0f0;
            color: var(--primary);
        }

        .card-feature h3 {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 0.5rem;
        }

        .card-feature p {
            font-size: 0.9rem;
            color: var(--text-weak);
            line-height: 1.6;
            margin: 0;
        }

        .card-image-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            border: 1px solid var(--border-light);
            height: 100%;
        }

        .card-image-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }

        .card-image-card .card-img-wrap {
            height: 200px;
            overflow: hidden;
            position: relative;
        }

        .card-image-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .card-image-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }

        .card-image-card .card-body {
            padding: 20px;
        }

        .card-image-card .card-body h3 {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 0.4rem;
        }

        .card-image-card .card-body p {
            font-size: 0.88rem;
            color: var(--text-weak);
            line-height: 1.6;
            margin: 0;
        }

        .card-image-card .card-tag {
            display: inline-block;
            background: #fef0f0;
            color: var(--primary);
            padding: 3px 10px;
            border-radius: var(--radius-full);
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 8px;
        }

        /* ============ STATS BAR ============ */
        .stats-bar {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .stat-block {
            text-align: center;
            padding: 20px 30px;
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            min-width: 140px;
            flex: 1;
            max-width: 220px;
            transition: all var(--transition-normal);
            border: 1px solid var(--border-light);
        }

        .stat-block:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .stat-block .stat-value {
            font-family: var(--font-heading);
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
        }

        .stat-block .stat-label-text {
            font-size: 0.85rem;
            color: var(--text-weak);
            margin-top: 6px;
        }

        /* ============ PROCESS STEPS ============ */
        .process-row {
            display: flex;
            gap: 0;
            align-items: stretch;
            flex-wrap: wrap;
            position: relative;
        }

        .process-step {
            flex: 1;
            min-width: 200px;
            text-align: center;
            padding: 24px 16px;
            position: relative;
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            margin: 4px;
            transition: all var(--transition-normal);
            border: 1px solid var(--border-light);
        }

        .process-step:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .process-step .step-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
            font-family: var(--font-heading);
        }

        .process-step h4 {
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 4px;
        }

        .process-step p {
            font-size: 0.82rem;
            color: var(--text-weak);
            margin: 0;
            line-height: 1.5;
        }

        .process-arrow {
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.4rem;
            flex-shrink: 0;
            padding: 0 4px;
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            margin-bottom: 10px;
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            background: #fafbfc;
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--font-body);
            transition: background var(--transition-fast);
        }

        .faq-question:hover {
            background: #fef0f0;
        }

        .faq-question i {
            color: var(--primary);
            transition: transform var(--transition-fast);
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }

        .faq-answer {
            padding: 0 22px;
            max-height: 0;
            overflow: hidden;
            transition: all var(--transition-normal);
            font-size: 0.9rem;
            color: var(--text-weak);
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            padding: 0 22px 18px;
            max-height: 400px;
        }

        /* ============ CTA SECTION ============ */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 60px 0;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            pointer-events: none;
        }

        .cta-section .cta-inner {
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 0.5rem;
            color: #fff;
        }

        .cta-section p {
            font-size: 1.05rem;
            opacity: 0.9;
            margin-bottom: 1.5rem;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-section .btn-accent {
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            box-shadow: var(--shadow-md);
        }

        .cta-section .btn-accent:hover {
            background: #fef0f0;
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            color: var(--primary-dark);
        }

        /* ============ TESTIMONIAL ============ */
        .testimonial-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-normal);
            height: 100%;
        }

        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
        }

        .testimonial-card .testimonial-text {
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.7;
            font-style: italic;
            margin-bottom: 1rem;
            position: relative;
            padding-left: 20px;
            border-left: 3px solid var(--primary);
        }

        .testimonial-card .testimonial-author {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--text-main);
        }

        .testimonial-card .testimonial-role {
            font-size: 0.78rem;
            color: var(--text-weak);
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--bg-darker);
            color: #ccc;
            padding: 50px 0 30px;
            font-size: 0.88rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 30px;
            margin-bottom: 30px;
        }

        .footer-logo {
            font-family: var(--font-heading);
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.6rem;
            letter-spacing: -0.01em;
        }

        .site-footer h4 {
            font-family: var(--font-heading);
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.8rem;
            letter-spacing: 0.02em;
        }

        .site-footer ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .site-footer ul li {
            margin-bottom: 6px;
        }

        .site-footer ul li a {
            color: #999;
            font-size: 0.82rem;
            transition: color var(--transition-fast);
        }

        .site-footer ul li a:hover {
            color: var(--primary-light);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.78rem;
            color: #777;
            line-height: 1.8;
        }

        .footer-bottom a {
            color: #999;
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: #ccc;
        }

        .footer-bottom p {
            margin: 2px 0;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .nav-links {
                gap: 2px;
            }
            .nav-links li a {
                padding: 8px 10px;
                font-size: 0.82rem;
            }
            .nav-search input {
                width: 160px;
            }
            .hero-banner {
                min-height: 360px;
            }
            .hero-banner-content h1 {
                font-size: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .process-row {
                flex-wrap: wrap;
            }
            .process-arrow {
                display: none;
            }
            .process-step {
                min-width: 44%;
                margin: 4px;
            }
        }

        @media (max-width: 768px) {
            body {
                padding-top: 96px;
            }
            .top-bar-strip {
                height: 34px;
            }
            .main-nav {
                top: 34px;
                height: 56px;
            }
            :root {
                --nav-height: 56px;
                --nav-top-height: 34px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                flex-direction: column;
                background: #fff;
                box-shadow: var(--shadow-lg);
                padding: 10px 0;
                gap: 0;
                border-top: 1px solid var(--border-light);
            }
            .nav-links.show {
                display: flex;
            }
            .nav-links li a {
                padding: 12px 20px;
                border-radius: 0;
                font-size: 0.9rem;
            }
            .nav-search input {
                width: 130px;
                height: 34px;
                font-size: 0.8rem;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .hero-banner {
                min-height: 300px;
            }
            .hero-banner-content h1 {
                font-size: 1.6rem;
            }
            .hero-banner-content .hero-desc {
                font-size: 0.95rem;
            }
            .hero-stat-row {
                gap: 16px;
            }
            .hero-stat-item .stat-num {
                font-size: 1.5rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-padding {
                padding: 40px 0;
            }
            .section-padding-lg {
                padding: 50px 0;
            }
            .stats-bar {
                gap: 10px;
            }
            .stat-block {
                min-width: 100px;
                padding: 14px 16px;
                flex: 1 1 40%;
                max-width: none;
            }
            .stat-block .stat-value {
                font-size: 1.8rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .process-step {
                min-width: 100%;
                margin: 4px 0;
            }
            .card-image-card .card-img-wrap {
                height: 160px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .hero-banner-content .hero-actions {
                flex-direction: column;
                gap: 8px;
            }
            .hero-banner-content .hero-actions .btn-primary,
            .hero-banner-content .hero-actions .btn-outline {
                width: 100%;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .nav-search input {
                width: 100px;
                font-size: 0.75rem;
                padding: 0 30px 0 10px;
            }
            .nav-logo {
                font-size: 1.2rem;
            }
            .nav-logo i {
                font-size: 1.1rem;
            }
            .hero-banner {
                min-height: 260px;
            }
            .hero-banner-content h1 {
                font-size: 1.35rem;
            }
            .hero-banner-content .hero-desc {
                font-size: 0.85rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .stat-block {
                flex: 1 1 100%;
                max-width: none;
            }
            .hero-stat-row {
                gap: 10px;
            }
            .top-bar-left span {
                font-size: 0.7rem;
            }
            .top-bar-right a {
                font-size: 0.7rem;
            }
            .card-feature {
                padding: 20px 16px;
            }
            .card-feature h3 {
                font-size: 1rem;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --accent: #f4a261;
            --accent-dark: #e07b3c;
            --bg-dark: #1a1a2e;
            --bg-darker: #0f0f1a;
            --bg-card: #16213e;
            --bg-light: #f8f9fa;
            --bg-white: #ffffff;
            --text-main: #1a1a2e;
            --text-body: #2d3436;
            --text-weak: #636e72;
            --text-light: #b2bec3;
            --text-white: #f8f9fa;
            --border: #dfe6e9;
            --border-light: #f0f0f0;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.14);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.18);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 22px;
            --radius-full: 50px;
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', 'Segoe UI', sans-serif;
            --max-width: 1240px;
            --nav-height: 64px;
            --nav-top-height: 40px;
            --float-bar-height: 60px;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-body);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: 104px;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            text-decoration: none;
        }

        button {
            cursor: pointer;
            font-family: var(--font-body);
        }

        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        /* ============ TOP BAR ============ */
        .top-bar-strip {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-top-height);
            background: var(--bg-darker);
            display: flex;
            align-items: center;
            font-size: 0.78rem;
            color: #aaa;
        }

        .top-bar-strip .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .top-bar-left {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .top-bar-left span {
            color: #ccc;
            font-size: 0.75rem;
        }

        .top-bar-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .top-bar-right a {
            color: #bbb;
            font-size: 0.78rem;
            transition: color var(--transition-fast);
        }

        .top-bar-right a:hover {
            color: #fff;
        }

        .hot-tag {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 2px 8px;
            border-radius: 3px;
            font-size: 0.7rem;
            font-weight: 600;
            animation: pulse-tag 2s infinite;
        }

        @keyframes pulse-tag {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.7;
            }
        }

        /* ============ MAIN NAV ============ */
        .main-nav {
            position: fixed;
            top: var(--nav-top-height);
            left: 0;
            right: 0;
            z-index: 999;
            height: var(--nav-height);
            background: #fff;
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-normal);
        }

        .main-nav.scrolled {
            box-shadow: var(--shadow-lg);
        }

        .main-nav .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .nav-logo {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-logo i {
            font-size: 1.4rem;
            color: var(--accent);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            display: block;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-body);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-links li a:hover {
            background: #fef0f0;
            color: var(--primary);
        }

        .nav-links li a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .nav-search-wrap {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-search {
            position: relative;
        }

        .nav-search input {
            width: 200px;
            height: 38px;
            border: 2px solid var(--border);
            border-radius: var(--radius-full);
            padding: 0 38px 0 16px;
            font-size: 0.85rem;
            font-family: var(--font-body);
            transition: all var(--transition-fast);
            background: #fafafa;
            outline: none;
        }

        .nav-search input:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.08);
        }

        .nav-search button {
            position: absolute;
            right: 4px;
            top: 50%;
            transform: translateY(-50%);
            background: var(--primary);
            color: #fff;
            border: none;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            font-size: 0.8rem;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background var(--transition-fast);
        }

        .nav-search button:hover {
            background: var(--primary-dark);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.3rem;
            color: var(--text-body);
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            background: #f5f5f5;
            color: var(--primary);
        }

        /* ============ SECTION COMMON ============ */
        .section-padding {
            padding: 70px 0;
        }

        .section-padding-lg {
            padding: 90px 0;
        }

        .section-padding-sm {
            padding: 50px 0;
        }

        .section-title {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-weak);
            margin-bottom: 40px;
            line-height: 1.6;
        }

        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-header .section-title {
            position: relative;
            display: inline-block;
            padding-bottom: 16px;
        }

        .section-header .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 50px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }

        .bg-light-section {
            background: var(--bg-light);
        }

        .bg-dark-section {
            background: var(--bg-dark);
            color: var(--text-white);
        }

        .bg-dark-section .section-title {
            color: #fff;
        }

        .bg-dark-section .section-subtitle {
            color: #ccc;
        }

        /* ============ HERO ============ */
        .hero-community {
            position: relative;
            background: linear-gradient(160deg, #0f0f1a 0%, #1a1a2e 40%, #16213e 100%);
            padding: 80px 0 90px;
            overflow: hidden;
            color: #fff;
        }

        .hero-community::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -120px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(230, 57, 70, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-community::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -60px;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(244, 162, 97, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-community .container-custom {
            position: relative;
            z-index: 1;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(230, 57, 70, 0.2);
            color: #ff6b6b;
            padding: 6px 16px;
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 18px;
            border: 1px solid rgba(230, 57, 70, 0.3);
        }

        .hero-title {
            font-family: var(--font-heading);
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            color: #fff;
            letter-spacing: -0.02em;
        }

        .hero-title .highlight {
            color: var(--primary-light);
            position: relative;
        }

        .hero-desc {
            font-size: 1.08rem;
            color: #c0c7d0;
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 480px;
        }

        .hero-buttons {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-primary-hero {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 13px 28px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            transition: all var(--transition-normal);
            box-shadow: 0 6px 20px rgba(230, 57, 70, 0.35);
            cursor: pointer;
        }

        .btn-primary-hero:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(230, 57, 70, 0.45);
            color: #fff;
        }

        .btn-outline-hero {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            padding: 13px 28px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.95rem;
            border: 2px solid rgba(255, 255, 255, 0.35);
            transition: all var(--transition-normal);
            cursor: pointer;
        }

        .btn-outline-hero:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
        }

        /* Countdown Ring */
        .countdown-ring-wrap {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 30px;
            flex-wrap: wrap;
        }

        .countdown-main-ring {
            position: relative;
            width: 200px;
            height: 200px;
            flex-shrink: 0;
        }

        .countdown-main-ring svg {
            width: 100%;
            height: 100%;
            transform: rotate(-90deg);
        }

        .countdown-ring-bg {
            fill: none;
            stroke: rgba(255, 255, 255, 0.1);
            stroke-width: 8;
        }

        .countdown-ring-progress {
            fill: none;
            stroke: var(--primary);
            stroke-width: 8;
            stroke-linecap: round;
            transition: stroke-dashoffset 0.5s ease;
        }

        .countdown-ring-inner {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            text-align: center;
        }

        .countdown-ring-inner .days-num {
            font-family: var(--font-heading);
            font-size: 3.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1;
            display: block;
        }

        .countdown-ring-inner .days-label {
            font-size: 0.85rem;
            color: #ccc;
            letter-spacing: 0.04em;
        }

        .countdown-blocks {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .countdown-block {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-md);
            padding: 14px 18px;
            text-align: center;
            min-width: 60px;
            backdrop-filter: blur(4px);
        }

        .countdown-block .count-num {
            font-family: var(--font-heading);
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            line-height: 1;
            display: block;
        }

        .countdown-block .count-label {
            font-size: 0.7rem;
            color: #999;
            letter-spacing: 0.03em;
            margin-top: 4px;
            display: block;
        }

        /* Carousel Dots */
        .carousel-sellpoints {
            margin-top: 30px;
            text-align: center;
        }

        .carousel-text {
            font-size: 1.1rem;
            color: #e0e0e0;
            font-weight: 500;
            min-height: 32px;
            transition: opacity 0.4s ease;
            letter-spacing: 0.02em;
        }

        .carousel-dots {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 14px;
        }

        .carousel-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.3);
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            padding: 0;
        }

        .carousel-dot.active {
            background: var(--primary);
            width: 28px;
            border-radius: 5px;
        }

        /* ============ STATS RIBBON ============ */
        .stats-ribbon {
            background: #fff;
            padding: 30px 0;
            border-bottom: 1px solid var(--border-light);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }

        .stat-item .stat-num {
            font-family: var(--font-heading);
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            display: block;
        }

        .stat-item .stat-label {
            font-size: 0.9rem;
            color: var(--text-weak);
            margin-top: 6px;
        }

        /* ============ FEATURE CARDS ============ */
        .feature-cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .feature-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .feature-card .card-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, #fef0f0 0%, #ffe8e8 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--primary);
            margin-bottom: 18px;
        }

        .feature-card h3 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 0.92rem;
            color: var(--text-weak);
            line-height: 1.6;
            margin: 0;
        }

        .feature-card .card-tag {
            display: inline-block;
            background: #fef0f0;
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: var(--radius-full);
            margin-top: 14px;
        }

        /* ============ TOPIC CARDS ============ */
        .topic-cards-scroll {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .topic-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-normal);
            cursor: pointer;
        }

        .topic-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .topic-card .topic-img {
            height: 160px;
            overflow: hidden;
            position: relative;
        }

        .topic-card .topic-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .topic-card:hover .topic-img img {
            transform: scale(1.06);
        }

        .topic-card .topic-img .topic-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #fff;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: var(--radius-full);
        }

        .topic-card .topic-body {
            padding: 16px 18px;
        }

        .topic-card .topic-body h4 {
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .topic-card .topic-body .topic-meta {
            font-size: 0.78rem;
            color: var(--text-weak);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        /* ============ PROCESS STEPS ============ */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .process-steps::before {
            content: '';
            position: absolute;
            top: 38px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: var(--border);
            z-index: 0;
        }

        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .process-step .step-num {
            width: 76px;
            height: 76px;
            border-radius: 50%;
            background: #fff;
            border: 3px solid var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            margin: 0 auto 16px;
            transition: all var(--transition-normal);
            box-shadow: var(--shadow-sm);
        }

        .process-step:hover .step-num {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: scale(1.06);
        }

        .process-step h4 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .process-step p {
            font-size: 0.85rem;
            color: var(--text-weak);
            line-height: 1.5;
            margin: 0;
        }

        /* ============ TESTIMONIALS ============ */
        .testimonial-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .testimonial-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            position: relative;
            transition: all var(--transition-normal);
        }

        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .testimonial-card .quote-icon {
            font-size: 2rem;
            color: var(--primary-light);
            opacity: 0.5;
            margin-bottom: 10px;
        }

        .testimonial-card .quote-text {
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 16px;
            font-style: italic;
        }

        .testimonial-card .user-info {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .testimonial-card .user-avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--bg-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .testimonial-card .user-name {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--text-main);
        }

        .testimonial-card .user-role {
            font-size: 0.78rem;
            color: var(--text-weak);
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: #ddd;
        }

        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: color var(--transition-fast);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--font-body);
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question .faq-icon {
            font-size: 0.8rem;
            transition: transform var(--transition-fast);
            flex-shrink: 0;
            color: var(--text-weak);
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 18px;
        }

        .faq-answer p {
            font-size: 0.92rem;
            color: var(--text-weak);
            line-height: 1.7;
            margin: 0;
        }

        /* ============ CTA ============ */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 70px 0;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 280px;
            height: 280px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section .container-custom {
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
            color: #fff;
        }

        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 28px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }

        .btn-cta-white {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: var(--primary);
            padding: 14px 32px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 1rem;
            border: none;
            transition: all var(--transition-normal);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
            cursor: pointer;
        }

        .btn-cta-white:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 36px rgba(0, 0, 0, 0.28);
            color: var(--primary-dark);
        }

        .btn-cta-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            padding: 14px 32px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.5);
            transition: all var(--transition-normal);
            cursor: pointer;
            margin-left: 12px;
        }

        .btn-cta-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--bg-darker);
            color: #ccc;
            padding: 50px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 30px;
            padding-bottom: 30px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-logo {
            font-family: var(--font-heading);
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
        }

        .site-footer h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 14px;
            font-family: var(--font-heading);
        }

        .site-footer ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .site-footer ul li {
            margin-bottom: 8px;
        }

        .site-footer ul li a {
            color: #999;
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }

        .site-footer ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            text-align: center;
            padding: 20px 0;
            font-size: 0.78rem;
            color: #777;
            line-height: 2;
        }

        .footer-bottom a {
            color: #999;
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        .footer-bottom p {
            margin: 2px 0;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
                text-align: center;
            }
            .hero-desc {
                margin-left: auto;
                margin-right: auto;
            }
            .hero-buttons {
                justify-content: center;
            }
            .countdown-ring-wrap {
                justify-content: center;
            }
            .feature-cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .topic-cards-scroll {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps::before {
                display: none;
            }
            .testimonial-cards {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .nav-links {
                gap: 2px;
            }
            .nav-links li a {
                padding: 8px 10px;
                font-size: 0.8rem;
            }
            .nav-search input {
                width: 140px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            body {
                padding-top: 96px;
            }
            .top-bar-strip {
                height: 34px;
            }
            .main-nav {
                top: 34px;
                height: 56px;
            }
            :root {
                --nav-top-height: 34px;
                --nav-height: 56px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 56px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 16px;
                box-shadow: var(--shadow-lg);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
                gap: 4px;
                z-index: 998;
            }
            .nav-links.show {
                display: flex;
            }
            .nav-links li a {
                padding: 10px 16px;
                border-radius: var(--radius-md);
                font-size: 0.9rem;
                width: 100%;
                text-align: left;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-search input {
                width: 120px;
                font-size: 0.78rem;
            }
            .hero-community {
                padding: 50px 0 60px;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .countdown-main-ring {
                width: 150px;
                height: 150px;
            }
            .countdown-ring-inner .days-num {
                font-size: 2.4rem;
            }
            .feature-cards-grid {
                grid-template-columns: 1fr;
            }
            .topic-cards-scroll {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .process-steps {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .testimonial-cards {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .stat-num {
                font-size: 1.8rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-padding {
                padding: 40px 0;
            }
            .section-padding-lg {
                padding: 50px 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .btn-cta-outline {
                margin-left: 0;
                margin-top: 10px;
            }
            .top-bar-left span {
                font-size: 0.68rem;
            }
            .top-bar-right a {
                font-size: 0.68rem;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.5rem;
            }
            .hero-desc {
                font-size: 0.88rem;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }
            .btn-primary-hero,
            .btn-outline-hero {
                width: 100%;
                justify-content: center;
            }
            .countdown-blocks {
                gap: 8px;
            }
            .countdown-block {
                padding: 10px 12px;
                min-width: 48px;
            }
            .countdown-block .count-num {
                font-size: 1.2rem;
            }
            .topic-cards-scroll {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .nav-search input {
                width: 100px;
            }
            .carousel-text {
                font-size: 0.9rem;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --accent: #f4a261;
            --accent-dark: #e07b3c;
            --bg-dark: #1a1a2e;
            --bg-darker: #0f0f1a;
            --bg-card: #16213e;
            --bg-light: #f8f9fa;
            --bg-white: #ffffff;
            --text-main: #1a1a2e;
            --text-body: #2d3436;
            --text-weak: #636e72;
            --text-light: #b2bec3;
            --text-white: #f8f9fa;
            --border: #dfe6e9;
            --border-light: #f0f0f0;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.14);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.18);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 22px;
            --radius-full: 50px;
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', 'Segoe UI', sans-serif;
            --max-width: 1240px;
            --nav-height: 64px;
            --nav-top-height: 40px;
            --float-bar-height: 60px;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-body);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: 104px;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            text-decoration: none;
        }

        button {
            cursor: pointer;
            font-family: var(--font-body);
        }

        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ============ TOP BAR ============ */
        .top-bar-strip {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-top-height);
            background: #0f0f1a;
            display: flex;
            align-items: center;
            font-size: 0.78rem;
            color: #aaa;
        }
        .top-bar-strip .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .top-bar-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .top-bar-right a {
            color: #bbb;
            font-size: 0.8rem;
            transition: color var(--transition-fast);
        }
        .top-bar-right a:hover {
            color: #fff;
        }
        .hot-tag {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 2px 8px;
            border-radius: 3px;
            font-size: 0.7rem;
            font-weight: 600;
            animation: pulse-tag 2s infinite;
        }
        @keyframes pulse-tag {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.7;
            }
        }

        /* ============ MAIN NAV ============ */
        .main-nav {
            position: fixed;
            top: var(--nav-top-height);
            left: 0;
            right: 0;
            z-index: 999;
            height: var(--nav-height);
            background: #fff;
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-normal);
        }
        .main-nav.scrolled {
            box-shadow: var(--shadow-lg);
        }
        .main-nav .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .nav-logo {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-logo i {
            font-size: 1.4rem;
            color: var(--accent);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            display: block;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-body);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links li a:hover {
            background: #fef0f0;
            color: var(--primary);
        }
        .nav-links li a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        .nav-search-wrap {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-search {
            position: relative;
        }
        .nav-search input {
            width: 200px;
            height: 38px;
            border: 2px solid var(--border);
            border-radius: var(--radius-full);
            padding: 0 38px 0 16px;
            font-size: 0.85rem;
            font-family: var(--font-body);
            transition: all var(--transition-fast);
            background: #fafafa;
            outline: none;
        }
        .nav-search input:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(230, 57, 70, 0.08);
        }
        .nav-search button {
            position: absolute;
            right: 4px;
            top: 50%;
            transform: translateY(-50%);
            background: var(--primary);
            color: #fff;
            border: none;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            font-size: 0.8rem;
            transition: all var(--transition-fast);
        }
        .nav-search button:hover {
            background: var(--primary-dark);
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--text-body);
            padding: 6px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
        }
        .mobile-menu-toggle:hover {
            background: #f5f5f5;
            color: var(--primary);
        }

        /* ============ HERO ============ */
        .hero-equipment {
            position: relative;
            background: var(--bg-dark);
            min-height: 560px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .hero-equipment::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }
        .hero-equipment .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 15, 26, 0.92) 0%, rgba(26, 26, 46, 0.7) 60%, rgba(230, 57, 70, 0.18) 100%);
            z-index: 1;
        }
        .hero-equipment .container-custom {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 48px;
            flex-wrap: wrap;
            padding-top: 40px;
            padding-bottom: 40px;
        }
        .hero-equipment .hero-text {
            flex: 1;
            min-width: 300px;
        }
        .hero-equipment .hero-badge {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 6px 16px;
            border-radius: var(--radius-full);
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            margin-bottom: 16px;
        }
        .hero-equipment h1 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }
        .hero-equipment h1 span {
            color: var(--accent);
        }
        .hero-equipment .hero-subtitle {
            font-size: 1.1rem;
            color: #ccc;
            line-height: 1.6;
            margin-bottom: 20px;
            max-width: 520px;
        }
        .hero-equipment .hero-sellpoints {
            list-style: none;
            margin: 0 0 24px 0;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .hero-equipment .hero-sellpoints li {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #e0e0e0;
            font-size: 0.9rem;
            font-weight: 500;
        }
        .hero-equipment .hero-sellpoints li i {
            color: var(--accent);
            font-size: 1rem;
        }
        .hero-equipment .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 20px;
        }
        .btn-primary-hero {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 14px 32px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-normal);
            border: none;
            box-shadow: 0 6px 24px rgba(230, 57, 70, 0.35);
        }
        .btn-primary-hero:hover {
            background: var(--primary-dark);
            box-shadow: 0 8px 32px rgba(230, 57, 70, 0.5);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-outline-hero {
            display: inline-block;
            background: transparent;
            color: #fff;
            padding: 14px 32px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-normal);
            border: 2px solid rgba(255, 255, 255, 0.5);
        }
        .btn-outline-hero:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            transform: translateY(-2px);
        }
        .hero-equipment .hero-trust-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            font-size: 0.82rem;
            color: #aaa;
            align-items: center;
        }
        .hero-equipment .hero-trust-strip span {
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .hero-equipment .hero-trust-strip i {
            color: #4ecb71;
            font-size: 0.85rem;
        }
        .hero-equipment .hero-visual {
            flex: 0 0 380px;
            min-width: 280px;
            position: relative;
        }
        .hero-equipment .hero-visual img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .hero-equipment .hero-visual .floating-badge {
            position: absolute;
            top: -14px;
            right: -14px;
            background: var(--accent);
            color: #1a1a2e;
            padding: 10px 18px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: var(--shadow-lg);
            animation: float-badge 3s ease-in-out infinite;
        }
        @keyframes float-badge {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-10px);
            }
        }

        /* ============ SECTION COMMON ============ */
        .section-padding {
            padding: 70px 0;
        }
        .section-padding-sm {
            padding: 50px 0;
        }
        .section-title {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-main);
            text-align: center;
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            text-align: center;
            color: var(--text-weak);
            font-size: 0.95rem;
            margin-bottom: 40px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .bg-light-section {
            background: var(--bg-light);
        }
        .bg-dark-section {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .bg-dark-section .section-title {
            color: #fff;
        }
        .bg-dark-section .section-subtitle {
            color: #ccc;
        }

        /* ============ PRODUCT CARDS ============ */
        .product-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            border: 1px solid var(--border-light);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .product-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: #e0e0e0;
        }
        .product-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 4/3;
            background: #f5f5f5;
        }
        .product-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .product-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }
        .product-card .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #fff;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            font-size: 0.75rem;
            font-weight: 700;
            z-index: 2;
        }
        .product-card .card-badge.hot {
            background: #ff6b35;
        }
        .product-card .card-badge.new {
            background: #2ecc71;
        }
        .product-card .card-body {
            padding: 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .product-card .card-body h3 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .product-card .card-body .card-desc {
            font-size: 0.85rem;
            color: var(--text-weak);
            margin-bottom: 10px;
            line-height: 1.5;
            flex: 1;
        }
        .product-card .card-body .card-price-row {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }
        .product-card .card-body .card-price {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--primary);
        }
        .product-card .card-body .card-price-original {
            font-size: 0.85rem;
            color: #bbb;
            text-decoration: line-through;
        }
        .product-card .card-body .card-stars {
            color: #f4a261;
            font-size: 0.82rem;
            margin-bottom: 4px;
        }
        .product-card .card-body .btn-card {
            display: inline-block;
            width: 100%;
            text-align: center;
            background: var(--primary);
            color: #fff;
            padding: 10px 0;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            border: none;
        }
        .product-card .card-body .btn-card:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.3);
        }

        /* ============ CATEGORY GRID ============ */
        .category-grid-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            border: 1px solid var(--border-light);
            cursor: pointer;
            height: 100%;
        }
        .category-grid-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--primary-light);
        }
        .category-grid-card .cat-icon {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: #fef0f0;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            font-size: 1.6rem;
            color: var(--primary);
            transition: all var(--transition-normal);
        }
        .category-grid-card:hover .cat-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.1);
        }
        .category-grid-card h3 {
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 4px;
        }
        .category-grid-card p {
            font-size: 0.82rem;
            color: var(--text-weak);
            margin: 0;
        }

        /* ============ PROMO BANNER ============ */
        .promo-banner {
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #c1121f 100%);
            border-radius: var(--radius-xl);
            padding: 40px 36px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 32px;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
        }
        .promo-banner::after {
            content: '';
            position: absolute;
            right: -60px;
            top: -60px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            pointer-events: none;
        }
        .promo-banner .promo-text {
            flex: 1;
            min-width: 240px;
            position: relative;
            z-index: 1;
        }
        .promo-banner .promo-text h2 {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 8px;
            color: #fff;
        }
        .promo-banner .promo-text p {
            font-size: 0.95rem;
            color: #ccc;
            margin-bottom: 16px;
        }
        .promo-banner .promo-timer {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        .promo-banner .promo-timer .timer-block {
            background: rgba(255, 255, 255, 0.12);
            padding: 10px 16px;
            border-radius: var(--radius-md);
            text-align: center;
            min-width: 60px;
        }
        .promo-banner .promo-timer .timer-block .num {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1;
        }
        .promo-banner .promo-timer .timer-block .label {
            font-size: 0.7rem;
            color: #bbb;
            margin-top: 2px;
        }
        .promo-banner .promo-img {
            flex: 0 0 200px;
            min-width: 160px;
            position: relative;
            z-index: 1;
        }
        .promo-banner .promo-img img {
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-lg);
            width: 100%;
        }

        /* ============ REVIEW CARDS ============ */
        .review-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-normal);
            height: 100%;
        }
        .review-card:hover {
            box-shadow: var(--shadow-md);
        }
        .review-card .review-stars {
            color: #f4a261;
            font-size: 0.9rem;
            margin-bottom: 8px;
        }
        .review-card .review-text {
            font-size: 0.9rem;
            color: var(--text-body);
            line-height: 1.6;
            margin-bottom: 12px;
            font-style: italic;
        }
        .review-card .review-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .review-card .review-author .avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: #e0e0e0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--text-weak);
            font-size: 0.85rem;
        }
        .review-card .review-author .author-info {
            font-size: 0.82rem;
        }
        .review-card .review-author .author-info strong {
            display: block;
            color: var(--text-main);
        }
        .review-card .review-author .author-info span {
            color: var(--text-weak);
            font-size: 0.75rem;
        }

        /* ============ TRUST STRIP ============ */
        .trust-strip-row {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            justify-content: center;
        }
        .trust-item {
            text-align: center;
            flex: 0 0 180px;
            min-width: 140px;
            padding: 20px;
        }
        .trust-item .trust-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: #fef0f0;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
            font-size: 1.5rem;
            color: var(--primary);
        }
        .trust-item h4 {
            font-family: var(--font-heading);
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 4px;
        }
        .trust-item p {
            font-size: 0.8rem;
            color: var(--text-weak);
            margin: 0;
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            margin-bottom: 10px;
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: #ddd;
        }
        .faq-item .faq-question {
            padding: 16px 20px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-main);
            user-select: none;
            transition: background var(--transition-fast);
            gap: 12px;
        }
        .faq-item .faq-question:hover {
            background: #fafafa;
        }
        .faq-item .faq-question i {
            transition: transform var(--transition-normal);
            color: var(--text-weak);
            font-size: 0.85rem;
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-normal), padding var(--transition-normal);
            padding: 0 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 16px;
        }
        .faq-item .faq-answer p {
            font-size: 0.88rem;
            color: var(--text-weak);
            line-height: 1.7;
            margin: 0;
        }

        /* ============ CTA SECTION ============ */
        .cta-section {
            background: linear-gradient(135deg, #1a1a2e 0%, #0f0f1a 100%);
            border-radius: var(--radius-xl);
            padding: 50px 36px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
        }
        .cta-section p {
            color: #ccc;
            font-size: 1rem;
            margin-bottom: 24px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-section .btn-cta-lg {
            display: inline-block;
            background: var(--accent);
            color: #1a1a2e;
            padding: 15px 40px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 1.05rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-normal);
            box-shadow: 0 8px 28px rgba(244, 162, 97, 0.4);
        }
        .cta-section .btn-cta-lg:hover {
            background: #ffb87a;
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(244, 162, 97, 0.55);
            color: #1a1a2e;
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: #0f0f1a;
            color: #ccc;
            padding: 50px 0 0;
            font-size: 0.88rem;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            padding-bottom: 30px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .site-footer .footer-logo {
            font-family: var(--font-heading);
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .site-footer h4 {
            font-family: var(--font-heading);
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .site-footer ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .site-footer ul li {
            margin-bottom: 6px;
        }
        .site-footer ul li a {
            color: #999;
            font-size: 0.82rem;
            transition: color var(--transition-fast);
        }
        .site-footer ul li a:hover {
            color: var(--primary-light);
        }
        .site-footer .footer-bottom {
            text-align: center;
            padding: 20px 0;
            font-size: 0.78rem;
            color: #888;
        }
        .site-footer .footer-bottom p {
            margin: 4px 0;
        }
        .site-footer .footer-bottom a {
            color: #aaa;
            transition: color var(--transition-fast);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ============ BRAND INTRO ============ */
        .brand-intro-block {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            line-height: 1.8;
        }
        .brand-intro-block p {
            color: var(--text-body);
            font-size: 0.95rem;
            margin-bottom: 12px;
        }
        .brand-intro-block p:last-child {
            margin-bottom: 0;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .nav-links li a {
                padding: 6px 10px;
                font-size: 0.8rem;
            }
            .nav-search input {
                width: 150px;
            }
            .hero-equipment h1 {
                font-size: 2.2rem;
            }
            .hero-equipment .hero-visual {
                flex: 0 0 300px;
            }
            .site-footer .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .section-padding {
                padding: 50px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 768px) {
            body {
                padding-top: 96px;
            }
            .nav-top-height {
                height: 34px;
            }
            .main-nav {
                top: 34px;
                height: 56px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 56px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 12px 20px;
                box-shadow: var(--shadow-lg);
                gap: 2px;
                z-index: 998;
                border-top: 1px solid var(--border-light);
            }
            .nav-links.show {
                display: flex;
            }
            .nav-links li a {
                width: 100%;
                text-align: left;
                padding: 10px 14px;
                border-radius: var(--radius-sm);
                font-size: 0.9rem;
            }
            .nav-search input {
                width: 120px;
                font-size: 0.78rem;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .hero-equipment {
                min-height: auto;
                padding: 40px 0;
            }
            .hero-equipment h1 {
                font-size: 1.8rem;
            }
            .hero-equipment .hero-visual {
                flex: 0 0 100%;
                max-width: 320px;
                margin: 0 auto;
            }
            .hero-equipment .container-custom {
                flex-direction: column;
                text-align: center;
            }
            .hero-equipment .hero-sellpoints {
                justify-content: center;
            }
            .hero-equipment .hero-cta-group {
                justify-content: center;
            }
            .hero-equipment .hero-trust-strip {
                justify-content: center;
            }
            .hero-equipment .hero-subtitle {
                max-width: 100%;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .promo-banner {
                flex-direction: column;
                text-align: center;
                padding: 28px 20px;
            }
            .promo-banner .promo-img {
                flex: 0 0 auto;
                max-width: 200px;
                margin: 0 auto;
            }
            .promo-banner .promo-timer {
                justify-content: center;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .trust-strip-row {
                gap: 10px;
            }
            .trust-item {
                flex: 0 0 130px;
                min-width: 120px;
                padding: 14px;
            }
            .cta-section {
                padding: 36px 20px;
                border-radius: var(--radius-lg);
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .product-card .card-body h3 {
                font-size: 0.95rem;
            }
        }
        @media (max-width: 520px) {
            body {
                padding-top: 88px;
            }
            .nav-top-height {
                height: 30px;
            }
            .main-nav {
                top: 30px;
                height: 50px;
            }
            .nav-logo {
                font-size: 1.2rem;
            }
            .nav-logo i {
                font-size: 1.1rem;
            }
            .nav-search input {
                width: 90px;
                padding: 0 30px 0 10px;
                font-size: 0.72rem;
            }
            .nav-links {
                top: 50px;
            }
            .hero-equipment h1 {
                font-size: 1.5rem;
            }
            .hero-equipment .hero-subtitle {
                font-size: 0.9rem;
            }
            .hero-equipment .hero-visual {
                max-width: 240px;
            }
            .hero-equipment .hero-visual .floating-badge {
                font-size: 0.75rem;
                padding: 6px 12px;
                top: -8px;
                right: -8px;
            }
            .section-padding {
                padding: 36px 0;
            }
            .section-title {
                font-size: 1.25rem;
            }
            .section-subtitle {
                font-size: 0.85rem;
                margin-bottom: 24px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .trust-item {
                flex: 0 0 100px;
                min-width: 90px;
                padding: 10px;
            }
            .trust-item .trust-icon {
                width: 42px;
                height: 42px;
                font-size: 1.2rem;
            }
            .trust-item h4 {
                font-size: 0.8rem;
            }
            .promo-banner .promo-text h2 {
                font-size: 1.4rem;
            }
            .promo-banner .promo-timer .timer-block {
                padding: 8px 10px;
                min-width: 48px;
            }
            .promo-banner .promo-timer .timer-block .num {
                font-size: 1.2rem;
            }
            .btn-primary-hero,
            .btn-outline-hero {
                padding: 10px 20px;
                font-size: 0.85rem;
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
            .cta-section .btn-cta-lg {
                padding: 12px 28px;
                font-size: 0.9rem;
            }
        }

/* roulang page: category6 */
:root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --accent: #f4a261;
            --accent-dark: #e07b3c;
            --bg-dark: #1a1a2e;
            --bg-darker: #0f0f1a;
            --bg-card: #16213e;
            --bg-light: #f8f9fa;
            --bg-white: #ffffff;
            --text-main: #1a1a2e;
            --text-body: #2d3436;
            --text-weak: #636e72;
            --text-light: #b2bec3;
            --text-white: #f8f9fa;
            --border: #dfe6e9;
            --border-light: #f0f0f0;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.14);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.18);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 22px;
            --radius-full: 50px;
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', 'Segoe UI', sans-serif;
            --max-width: 1240px;
            --nav-height: 64px;
            --nav-top-height: 40px;
            --float-bar-height: 60px;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-body);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: 104px;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            text-decoration: none;
        }

        button {
            cursor: pointer;
            font-family: var(--font-body);
        }

        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ============ TOP BAR STRIP ============ */
        .top-bar-strip {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-top-height);
            background: var(--bg-darker);
            color: #bbb;
            font-size: 0.78rem;
            display: flex;
            align-items: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .top-bar-strip .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .top-bar-left {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .top-bar-left span {
            color: #ccc;
        }

        .top-bar-left i {
            color: var(--accent);
            margin-right: 4px;
            font-size: 0.7rem;
        }

        .top-bar-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .top-bar-right a {
            color: #bbb;
            font-size: 0.78rem;
            transition: color var(--transition-fast);
        }

        .top-bar-right a:hover {
            color: #fff;
        }

        .hot-tag {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 2px 8px;
            border-radius: 3px;
            font-size: 0.7rem;
            font-weight: 600;
            animation: pulse-tag 2s infinite;
        }

        @keyframes pulse-tag {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.7;
            }
        }

        /* ============ MAIN NAV ============ */
        .main-nav {
            position: fixed;
            top: var(--nav-top-height);
            left: 0;
            right: 0;
            z-index: 999;
            height: var(--nav-height);
            background: #fff;
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-normal);
        }

        .main-nav.scrolled {
            box-shadow: var(--shadow-lg);
        }

        .main-nav .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .nav-logo {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-logo i {
            font-size: 1.4rem;
            color: var(--accent);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            display: block;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-body);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-links li a:hover {
            background: #fef0f0;
            color: var(--primary);
        }

        .nav-links li a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .nav-search-wrap {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-search {
            position: relative;
        }

        .nav-search input {
            width: 200px;
            height: 38px;
            border: 2px solid var(--border);
            border-radius: var(--radius-full);
            padding: 0 38px 0 16px;
            font-size: 0.85rem;
            font-family: var(--font-body);
            transition: all var(--transition-fast);
            background: #fafafa;
            outline: none;
        }

        .nav-search input:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.08);
        }

        .nav-search button {
            position: absolute;
            right: 4px;
            top: 50%;
            transform: translateY(-50%);
            background: var(--primary);
            color: #fff;
            border: none;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            font-size: 0.8rem;
            transition: all var(--transition-fast);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .nav-search button:hover {
            background: var(--primary-dark);
            transform: translateY(-50%) scale(1.05);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.3rem;
            color: var(--text-main);
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            background: #f5f5f5;
            color: var(--primary);
        }

        /* ============ HERO SECTION ============ */
        .hero-training {
            position: relative;
            background: linear-gradient(135deg, rgba(26, 26, 46, 0.88) 0%, rgba(15, 15, 26, 0.92) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            min-height: 580px;
            display: flex;
            align-items: center;
            padding: 60px 0;
            overflow: hidden;
        }

        .hero-training::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(230, 57, 70, 0.25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-training::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(244, 162, 97, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-training .container-custom {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            width: 100%;
        }

        .hero-training-content {
            color: #fff;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(244, 162, 97, 0.2);
            color: var(--accent);
            padding: 6px 16px;
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 16px;
            border: 1px solid rgba(244, 162, 97, 0.3);
            letter-spacing: 0.02em;
        }

        .hero-training-content h1 {
            font-family: var(--font-heading);
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            color: #fff;
            letter-spacing: -0.01em;
        }

        .hero-training-content h1 .highlight {
            color: var(--accent);
            position: relative;
        }

        .hero-training-content .hero-subtitle {
            font-size: 1.1rem;
            color: #d0d0d0;
            line-height: 1.7;
            margin-bottom: 24px;
            max-width: 480px;
        }

        .hero-stats-row {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }

        .hero-stat-item {
            text-align: left;
        }

        .hero-stat-item .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            font-family: var(--font-heading);
            line-height: 1;
        }

        .hero-stat-item .stat-label {
            font-size: 0.8rem;
            color: #bbb;
            margin-top: 4px;
        }

        /* Hero Form */
        .hero-form-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-xl);
            position: relative;
            z-index: 3;
        }

        .hero-form-card h3 {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
            text-align: center;
        }

        .hero-form-card .form-subtitle {
            font-size: 0.85rem;
            color: var(--text-weak);
            text-align: center;
            margin-bottom: 20px;
        }

        .hero-form-card .form-group {
            margin-bottom: 14px;
        }

        .hero-form-card label {
            display: block;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-body);
            margin-bottom: 4px;
        }

        .hero-form-card input,
        .hero-form-card select {
            width: 100%;
            height: 44px;
            border: 2px solid var(--border);
            border-radius: var(--radius-md);
            padding: 0 14px;
            font-size: 0.9rem;
            font-family: var(--font-body);
            transition: all var(--transition-fast);
            background: #fafafa;
            outline: none;
            box-sizing: border-box;
        }

        .hero-form-card input:focus,
        .hero-form-card select:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.06);
        }

        .btn-primary-full {
            display: block;
            width: 100%;
            padding: 13px 24px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-full);
            font-size: 1rem;
            font-weight: 700;
            font-family: var(--font-body);
            cursor: pointer;
            transition: all var(--transition-normal);
            letter-spacing: 0.02em;
            text-align: center;
        }

        .btn-primary-full:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(230, 57, 70, 0.35);
        }

        .btn-primary-full:active {
            transform: translateY(0);
        }

        /* ============ SECTION COMMONS ============ */
        .section-padding {
            padding: 70px 0;
        }

        .section-padding-sm {
            padding: 50px 0;
        }

        .section-header {
            margin-bottom: 40px;
        }

        .section-header .section-badge {
            display: inline-block;
            background: #fef0f0;
            color: var(--primary);
            padding: 5px 14px;
            border-radius: var(--radius-full);
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }

        .section-header h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }

        .section-header .section-desc {
            font-size: 1rem;
            color: var(--text-weak);
            max-width: 640px;
            line-height: 1.7;
        }

        .section-header.text-center .section-desc {
            margin: 0 auto;
        }

        /* ============ SERVICE CARDS ============ */
        .service-card-alt {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
            height: 100%;
        }

        .service-card-alt:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }

        .service-card-alt .card-icon-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 16px;
            flex-shrink: 0;
        }

        .service-card-alt .card-icon-circle.red {
            background: #fef0f0;
            color: var(--primary);
        }
        .service-card-alt .card-icon-circle.orange {
            background: #fff6ef;
            color: var(--accent);
        }
        .service-card-alt .card-icon-circle.blue {
            background: #eef5ff;
            color: #3b82f6;
        }
        .service-card-alt .card-icon-circle.green {
            background: #ecfdf5;
            color: #10b981;
        }

        .service-card-alt h4 {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .service-card-alt p {
            font-size: 0.9rem;
            color: var(--text-weak);
            line-height: 1.6;
            margin: 0;
        }

        /* ============ ADVANTAGE DATA ============ */
        .data-stats-bar {
            background: var(--bg-dark);
            padding: 50px 0;
            position: relative;
        }

        .data-stats-bar::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.06;
            pointer-events: none;
        }

        .data-stats-bar .container-custom {
            position: relative;
            z-index: 1;
        }

        .stat-card-dark {
            text-align: center;
            padding: 20px 16px;
        }

        .stat-card-dark .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            font-family: var(--font-heading);
            color: #fff;
            line-height: 1;
        }

        .stat-card-dark .stat-number .accent {
            color: var(--accent);
        }

        .stat-card-dark .stat-desc {
            font-size: 0.9rem;
            color: #bbb;
            margin-top: 6px;
        }

        /* ============ COURSE SYSTEM ============ */
        .course-card-featured {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-normal);
            height: 100%;
            border: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
        }

        .course-card-featured:hover {
            box-shadow: var(--shadow-xl);
            transform: translateY(-6px);
        }

        .course-card-featured .course-img-wrap {
            position: relative;
            height: 200px;
            overflow: hidden;
        }

        .course-card-featured .course-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .course-card-featured:hover .course-img-wrap img {
            transform: scale(1.06);
        }

        .course-card-featured .course-level-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #fff;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            font-size: 0.75rem;
            font-weight: 600;
            z-index: 2;
        }

        .course-card-featured .course-level-tag.intermediate {
            background: var(--accent);
        }
        .course-card-featured .course-level-tag.advanced {
            background: #3b82f6;
        }
        .course-card-featured .course-level-tag.youth {
            background: #10b981;
        }

        .course-card-featured .course-body {
            padding: 20px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .course-card-featured h4 {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .course-card-featured .course-meta {
            font-size: 0.8rem;
            color: var(--text-weak);
            margin-bottom: 10px;
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .course-card-featured .course-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .course-card-featured p {
            font-size: 0.88rem;
            color: var(--text-weak);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 14px;
        }

        .btn-outline-sm {
            display: inline-block;
            padding: 8px 18px;
            border: 2px solid var(--primary);
            color: var(--primary);
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 600;
            transition: all var(--transition-fast);
            text-align: center;
            align-self: flex-start;
        }

        .btn-outline-sm:hover {
            background: var(--primary);
            color: #fff;
        }

        /* ============ COACH SHOWCASE ============ */
        .coach-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            text-align: center;
            border: 1px solid var(--border-light);
            height: 100%;
        }

        .coach-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }

        .coach-card .coach-img {
            width: 110px;
            height: 110px;
            border-radius: 50%;
            object-fit: cover;
            margin: 24px auto 12px;
            border: 4px solid #fef0f0;
        }

        .coach-card h4 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 2px;
        }

        .coach-card .coach-title {
            font-size: 0.8rem;
            color: var(--primary);
            font-weight: 600;
            margin-bottom: 8px;
        }

        .coach-card p {
            font-size: 0.85rem;
            color: var(--text-weak);
            padding: 0 16px 20px;
            line-height: 1.5;
            margin: 0;
        }

        /* ============ PROCESS STEPS ============ */
        .process-step-row {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-light);
            transition: all var(--transition-fast);
        }

        .process-step-row:last-child {
            border-bottom: none;
        }

        .process-step-row:hover {
            background: #fefefe;
            padding-left: 12px;
            border-radius: var(--radius-md);
        }

        .process-step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-family: var(--font-heading);
        }

        .process-step-num.alt {
            background: var(--accent);
        }

        .process-step-content h4 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 4px;
        }

        .process-step-content p {
            font-size: 0.9rem;
            color: var(--text-weak);
            margin: 0;
            line-height: 1.6;
        }

        /* ============ TESTIMONIAL ============ */
        .testimonial-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-normal);
            height: 100%;
            position: relative;
        }

        .testimonial-card::before {
            content: '\201C';
            position: absolute;
            top: 10px;
            left: 16px;
            font-size: 3rem;
            color: #fef0f0;
            font-family: Georgia, serif;
            line-height: 1;
            pointer-events: none;
        }

        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .testimonial-card .testimonial-text {
            font-size: 0.92rem;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 14px;
            padding-top: 10px;
            position: relative;
            z-index: 1;
        }

        .testimonial-card .testimonial-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .testimonial-card .testimonial-author img {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            object-fit: cover;
        }

        .testimonial-card .author-name {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--text-main);
        }

        .testimonial-card .author-detail {
            font-size: 0.75rem;
            color: var(--text-weak);
        }

        /* ============ FAQ ============ */
        .faq-item {
            border-bottom: 1px solid var(--border-light);
            padding: 0;
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 18px 0;
            background: none;
            border: none;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            font-family: var(--font-body);
            text-align: left;
            transition: color var(--transition-fast);
            gap: 12px;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: #f5f5f5;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

        .faq-question[aria-expanded="true"] .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-normal), padding var(--transition-normal);
            font-size: 0.9rem;
            color: var(--text-weak);
            line-height: 1.7;
            padding: 0 0;
        }

        .faq-answer.open {
            max-height: 300px;
            padding: 0 0 18px 0;
        }

        /* ============ CTA SECTION ============ */
        .cta-training-section {
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
            padding: 60px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-training-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -60px;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(230, 57, 70, 0.3) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-training-section .container-custom {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .cta-training-section h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-training-section p {
            font-size: 1.05rem;
            color: #ccc;
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }

        .btn-cta-large {
            display: inline-block;
            padding: 14px 36px;
            background: var(--accent);
            color: #fff;
            border: none;
            border-radius: var(--radius-full);
            font-size: 1.05rem;
            font-weight: 700;
            font-family: var(--font-body);
            cursor: pointer;
            transition: all var(--transition-normal);
            letter-spacing: 0.02em;
        }

        .btn-cta-large:hover {
            background: var(--accent-dark);
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(244, 162, 97, 0.4);
            color: #fff;
        }

        .btn-cta-outline-large {
            display: inline-block;
            padding: 14px 36px;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
            border-radius: var(--radius-full);
            font-size: 1.05rem;
            font-weight: 600;
            font-family: var(--font-body);
            cursor: pointer;
            transition: all var(--transition-normal);
            letter-spacing: 0.02em;
            margin-left: 12px;
        }

        .btn-cta-outline-large:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--bg-darker);
            color: #ccc;
            padding: 50px 0 0;
            font-size: 0.88rem;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .site-footer .footer-logo {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }

        .site-footer h4 {
            font-family: var(--font-heading);
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .site-footer ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .site-footer ul li {
            margin-bottom: 6px;
        }

        .site-footer ul li a {
            color: #999;
            font-size: 0.82rem;
            transition: color var(--transition-fast);
        }

        .site-footer ul li a:hover {
            color: #fff;
        }

        .site-footer .footer-bottom {
            padding: 20px 0;
            text-align: center;
            font-size: 0.78rem;
            color: #777;
            line-height: 1.8;
        }

        .site-footer .footer-bottom a {
            color: #999;
            transition: color var(--transition-fast);
        }

        .site-footer .footer-bottom a:hover {
            color: #fff;
        }

        .site-footer .footer-bottom p {
            margin: 2px 0;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .hero-training .container-custom {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-training {
                min-height: auto;
                padding: 40px 0;
            }
            .hero-training-content h1 {
                font-size: 2rem;
            }
            .hero-form-card {
                max-width: 480px;
                margin: 0 auto;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .nav-links {
                gap: 2px;
            }
            .nav-links li a {
                padding: 6px 10px;
                font-size: 0.8rem;
            }
            .nav-search input {
                width: 140px;
            }
        }

        @media (max-width: 768px) {
            body {
                padding-top: 96px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 12px 20px;
                box-shadow: var(--shadow-lg);
                border-top: 1px solid var(--border-light);
                z-index: 998;
                gap: 0;
            }
            .nav-links.show {
                display: flex;
            }
            .nav-links li a {
                display: block;
                padding: 12px 16px;
                border-radius: var(--radius-md);
                font-size: 0.9rem;
                width: 100%;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .nav-search input {
                width: 120px;
            }
            .hero-training-content h1 {
                font-size: 1.6rem;
            }
            .hero-stats-row {
                gap: 16px;
            }
            .hero-stat-item .stat-num {
                font-size: 1.5rem;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .cta-training-section h2 {
                font-size: 1.5rem;
            }
            .btn-cta-outline-large {
                margin-left: 0;
                margin-top: 10px;
            }
            .data-stats-bar .grid-x {
                gap: 16px;
            }
            .stat-card-dark .stat-number {
                font-size: 2rem;
            }
            .section-padding {
                padding: 40px 0;
            }
            .course-card-featured .course-img-wrap {
                height: 160px;
            }
            .top-bar-strip {
                font-size: 0.7rem;
            }
            .top-bar-left {
                gap: 8px;
            }
            .top-bar-right {
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            .hero-training-content h1 {
                font-size: 1.35rem;
            }
            .hero-training-content .hero-subtitle {
                font-size: 0.9rem;
            }
            .hero-form-card {
                padding: 20px 16px;
            }
            .hero-form-card h3 {
                font-size: 1.1rem;
            }
            .section-header h2 {
                font-size: 1.3rem;
            }
            .section-header .section-desc {
                font-size: 0.88rem;
            }
            .nav-search input {
                width: 100px;
                font-size: 0.78rem;
            }
            .nav-logo {
                font-size: 1.2rem;
            }
            .nav-logo i {
                font-size: 1.1rem;
            }
            .course-card-featured .course-img-wrap {
                height: 140px;
            }
            .testimonial-card {
                padding: 16px 14px;
            }
            .coach-card .coach-img {
                width: 80px;
                height: 80px;
            }
            .process-step-num {
                width: 38px;
                height: 38px;
                font-size: 1rem;
            }
            .btn-cta-large,
            .btn-cta-outline-large {
                padding: 12px 24px;
                font-size: 0.9rem;
                display: block;
                width: 100%;
                margin-left: 0;
                margin-bottom: 10px;
            }
        }