/* roulang page: index */
:root {
            --primary: #FF6B35;
            --primary-dark: #E55A2B;
            --primary-light: #FF8A5C;
            --accent: #FFC107;
            --dark: #1A1A1A;
            --darker: #111827;
            --gray: #6B7280;
            --light-gray: #F3F4F6;
            --lighter: #F8F9FA;
            --border: #E5E7EB;
            --white: #FFFFFF;
            --radius: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
            --transition: 0.2s ease;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Source Han Sans CN', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-weight: 400;
            line-height: 1.7;
            color: var(--dark);
            background: var(--white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            padding-bottom: 60px;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }

        /* Container */
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-lg);
        }
        .main-nav {
            display: flex;
            align-items: center;
            justify-content: center;
            height: 68px;
            position: relative;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .nav-logo {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--dark);
            white-space: nowrap;
            z-index: 2;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: var(--white);
            border-radius: 50%;
            font-size: 1.1rem;
            font-weight: 700;
        }
        .nav-logo:hover {
            color: var(--primary);
        }
        .nav-links-left,
        .nav-links-right {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links-left {
            margin-right: auto;
            padding-right: 140px;
        }
        .nav-links-right {
            margin-left: auto;
            padding-left: 140px;
        }
        .nav-links-left a,
        .nav-links-right a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 0.95rem;
            font-weight: 500;
            color: #374151;
            border-radius: 6px;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition), background var(--transition);
        }
        .nav-links-left a::after,
        .nav-links-right a::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: transform var(--transition);
        }
        .nav-links-left a:hover,
        .nav-links-right a:hover {
            color: var(--primary);
            background: rgba(255, 107, 53, 0.05);
        }
        .nav-links-left a:hover::after,
        .nav-links-right a:hover::after {
            transform: translateX(-50%) scaleX(1);
        }
        .nav-links-left a.active,
        .nav-links-right a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-links-left a.active::after,
        .nav-links-right a.active::after {
            transform: translateX(-50%) scaleX(1);
        }
        .nav-home-link {
            font-weight: 600 !important;
        }
        .hamburger-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark);
            padding: 8px;
            z-index: 3;
            position: absolute;
            right: 16px;
            top: 50%;
            transform: translateY(-50%);
        }
        @media (max-width: 1024px) {
            .nav-links-left,
            .nav-links-right {
                display: none;
            }
            .nav-logo {
                position: static;
                transform: none;
                margin: 0 auto;
            }
            .hamburger-toggle {
                display: block;
            }
            .main-nav {
                justify-content: space-between;
                padding: 0 16px;
            }
            .mobile-menu-overlay {
                position: fixed;
                top: 0;
                left: 0;
                width: 100%;
                height: 100%;
                background: rgba(0, 0, 0, 0.6);
                z-index: 1040;
                display: none;
                opacity: 0;
                transition: opacity 0.3s ease;
            }
            .mobile-menu-overlay.active {
                display: block;
                opacity: 1;
            }
            .mobile-menu-panel {
                position: fixed;
                top: 0;
                right: -320px;
                width: 300px;
                height: 100%;
                background: var(--white);
                z-index: 1051;
                padding: 80px 24px 40px;
                transition: right 0.3s ease;
                overflow-y: auto;
                display: flex;
                flex-direction: column;
                gap: 4px;
            }
            .mobile-menu-panel.active {
                right: 0;
            }
            .mobile-menu-panel a {
                display: block;
                padding: 12px 16px;
                font-size: 1.05rem;
                font-weight: 500;
                color: var(--dark);
                border-radius: 8px;
                transition: all var(--transition);
            }
            .mobile-menu-panel a:hover,
            .mobile-menu-panel a.active {
                background: rgba(255, 107, 53, 0.08);
                color: var(--primary);
            }
            .mobile-menu-close {
                position: absolute;
                top: 16px;
                right: 16px;
                background: none;
                border: none;
                font-size: 1.5rem;
                cursor: pointer;
                color: var(--dark);
                padding: 8px;
            }
        }

        /* Hero */
        .hero-section {
            position: relative;
            min-height: 80vh;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            color: var(--white);
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(17, 24, 39, 0.88) 0%, rgba(26, 26, 26, 0.78) 40%, rgba(255, 107, 53, 0.35) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
            width: 100%;
        }
        .hero-text {
            flex: 1;
            min-width: 300px;
        }
        .hero-text .hero-badge {
            display: inline-block;
            background: var(--accent);
            color: var(--darker);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .hero-text h1 {
            font-size: 3.5rem;
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero-text .hero-subtitle {
            font-size: 1.15rem;
            line-height: 1.8;
            margin-bottom: 32px;
            opacity: 0.9;
            max-width: 520px;
        }
        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .btn-primary-custom {
            display: inline-block;
            background: var(--primary);
            color: var(--white);
            padding: 13px 32px;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            white-space: nowrap;
        }
        .btn-primary-custom:hover {
            background: var(--primary-dark);
            color: var(--white);
            transform: translateY(-1px);
            box-shadow: 0 4px 20px rgba(255, 107, 53, 0.4);
        }
        .btn-outline-custom {
            display: inline-block;
            background: transparent;
            color: var(--white);
            padding: 12px 32px;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: 600;
            border: 2px solid var(--white);
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            white-space: nowrap;
        }
        .btn-outline-custom:hover {
            background: var(--white);
            color: var(--darker);
            transform: translateY(-1px);
        }
        .hero-demo {
            flex: 1;
            min-width: 280px;
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(12px);
            border-radius: var(--radius-lg);
            padding: 32px;
            border: 1px solid rgba(255, 255, 255, 0.18);
        }
        .hero-demo .demo-score {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            margin-bottom: 20px;
        }
        .demo-team {
            text-align: center;
            font-size: 1.1rem;
            font-weight: 600;
        }
        .demo-score-num {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 2px;
        }
        .demo-status {
            text-align: center;
            font-size: 0.9rem;
            opacity: 0.8;
            margin-bottom: 16px;
        }
        .demo-stats {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .demo-stat-item {
            flex: 1;
            min-width: 60px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 6px;
            padding: 12px 8px;
            text-align: center;
            font-size: 0.8rem;
        }
        .demo-stat-item .stat-val {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--accent);
        }
        @media (max-width: 768px) {
            .hero-section {
                min-height: 60vh;
                padding: 60px 0;
            }
            .hero-text h1 {
                font-size: 2rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-content {
                flex-direction: column;
                gap: 32px;
            }
            .hero-demo {
                width: 100%;
            }
        }

        /* Section通用 */
        .section-block {
            padding: 72px 0;
        }
        .section-block.bg-light {
            background: var(--lighter);
        }
        .section-block.bg-dark {
            background: var(--darker);
            color: var(--white);
        }
        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 8px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.3;
            color: inherit;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--gray);
            max-width: 640px;
            line-height: 1.7;
            margin-bottom: 32px;
        }
        .bg-dark .section-desc {
            color: rgba(255, 255, 255, 0.7);
        }
        @media (max-width: 768px) {
            .section-block {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
        }

        /* 卡片 */
        .card-custom {
            background: var(--white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            overflow: hidden;
            height: 100%;
        }
        .card-custom:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: #d1d5db;
        }
        .card-custom .card-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            display: block;
        }
        .card-custom .card-body {
            padding: 20px;
        }
        .card-custom .card-title {
            font-size: 1.125rem;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-custom .card-text {
            font-size: 0.95rem;
            color: var(--gray);
            line-height: 1.6;
        }
        .card-custom .card-tag {
            display: inline-block;
            background: rgba(255, 107, 53, 0.1);
            color: var(--primary);
            padding: 3px 10px;
            border-radius: 4px;
            font-size: 0.78rem;
            font-weight: 600;
            margin-bottom: 8px;
        }

        /* 竖屏种草 */
        .vertical-feed {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            padding-bottom: 16px;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: var(--primary) transparent;
        }
        .vertical-feed::-webkit-scrollbar {
            height: 6px;
        }
        .vertical-feed::-webkit-scrollbar-track {
            background: transparent;
        }
        .vertical-feed::-webkit-scrollbar-thumb {
            background: var(--primary);
            border-radius: 3px;
        }
        .vertical-card {
            flex: 0 0 280px;
            scroll-snap-align: start;
            background: var(--white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            cursor: pointer;
        }
        .vertical-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .vertical-card img {
            width: 100%;
            aspect-ratio: 3/4;
            object-fit: cover;
        }
        .vertical-card .vcard-info {
            padding: 16px;
        }
        .vertical-card .vcard-info h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .vertical-card .vcard-info p {
            font-size: 0.85rem;
            color: var(--gray);
            margin: 0;
        }

        /* 爆款清单 */
        .hot-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 16px;
        }
        .hot-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 16px;
            transition: all var(--transition);
            cursor: pointer;
        }
        .hot-item:hover {
            box-shadow: var(--shadow);
            border-color: var(--primary);
            transform: translateX(3px);
        }
        .hot-item .hot-rank {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary);
            min-width: 40px;
            text-align: center;
        }
        .hot-item .hot-thumb {
            width: 80px;
            height: 56px;
            border-radius: 6px;
            object-fit: cover;
            flex-shrink: 0;
        }
        .hot-item .hot-info h4 {
            font-size: 0.95rem;
            font-weight: 600;
            margin: 0 0 4px;
        }
        .hot-item .hot-info span {
            font-size: 0.8rem;
            color: var(--gray);
        }
        @media (max-width: 768px) {
            .hot-list {
                grid-template-columns: 1fr;
            }
        }

        /* 评价墙 */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 20px;
        }
        .review-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .review-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-2px);
        }
        .review-card .review-stars {
            color: var(--accent);
            margin-bottom: 10px;
            font-size: 0.9rem;
        }
        .review-card .review-text {
            font-size: 0.95rem;
            line-height: 1.7;
            color: var(--dark);
            margin-bottom: 12px;
            font-style: italic;
        }
        .review-card .review-author {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--gray);
        }

        /* 资讯区 */
        .news-list {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 32px;
        }
        .news-main .news-item {
            display: flex;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid var(--border);
            transition: background var(--transition);
            cursor: pointer;
        }
        .news-main .news-item:hover {
            background: rgba(255, 107, 53, 0.03);
            border-radius: 6px;
            padding-left: 8px;
        }
        .news-main .news-thumb {
            width: 140px;
            height: 100px;
            border-radius: 6px;
            object-fit: cover;
            flex-shrink: 0;
        }
        .news-main .news-info .news-date {
            font-size: 0.8rem;
            color: var(--gray);
            margin-bottom: 4px;
        }
        .news-main .news-info h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .news-main .news-info p {
            font-size: 0.85rem;
            color: var(--gray);
            margin-bottom: 6px;
            line-height: 1.5;
        }
        .news-main .news-info .read-more {
            font-size: 0.85rem;
            color: var(--primary);
            font-weight: 600;
            cursor: pointer;
        }
        .news-main .news-info .read-more:hover {
            text-decoration: underline;
        }
        .news-sidebar {
            background: var(--lighter);
            border-radius: var(--radius-lg);
            padding: 20px;
            height: fit-content;
            position: sticky;
            top: 90px;
        }
        .news-sidebar h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .news-sidebar .hot-tag {
            display: inline-block;
            background: var(--white);
            border: 1px solid var(--border);
            padding: 6px 12px;
            border-radius: 20px;
            font-size: 0.82rem;
            margin: 4px;
            cursor: pointer;
            transition: all var(--transition);
        }
        .news-sidebar .hot-tag:hover {
            background: var(--primary);
            color: var(--white);
            border-color: var(--primary);
        }
        @media (max-width: 768px) {
            .news-list {
                grid-template-columns: 1fr;
            }
            .news-main .news-item {
                flex-direction: column;
            }
            .news-main .news-thumb {
                width: 100%;
                height: 180px;
            }
            .news-sidebar {
                position: static;
            }
        }

        /* 加购引导 */
        .cta-strip {
            background: linear-gradient(135deg, var(--primary) 0%, #FF8A5C 100%);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: center;
            color: var(--white);
            position: relative;
            overflow: hidden;
        }
        .cta-strip::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 300px;
            height: 300px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
        }
        .cta-strip h3 {
            font-size: 1.8rem;
            font-weight: 700;
            position: relative;
            z-index: 1;
        }
        .cta-strip p {
            font-size: 1rem;
            opacity: 0.9;
            position: relative;
            z-index: 1;
            margin-bottom: 24px;
        }
        .cta-strip .btn-cta-large {
            display: inline-block;
            background: var(--white);
            color: var(--primary);
            padding: 14px 40px;
            border-radius: 6px;
            font-size: 1.1rem;
            font-weight: 700;
            position: relative;
            z-index: 1;
            transition: all var(--transition);
        }
        .cta-strip .btn-cta-large:hover {
            transform: scale(1.04);
            box-shadow: 0 6px 28px rgba(0, 0, 0, 0.2);
            color: var(--primary-dark);
        }

        /* 场景演示 */
        .scene-row {
            display: flex;
            align-items: center;
            gap: 48px;
            flex-wrap: wrap;
        }
        .scene-row.reverse {
            flex-direction: row-reverse;
        }
        .scene-img {
            flex: 1;
            min-width: 280px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .scene-img img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
        }
        .scene-text {
            flex: 1;
            min-width: 280px;
        }
        .scene-text h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .scene-text p {
            font-size: 1rem;
            color: var(--gray);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .scene-text ul {
            list-style: none;
            padding: 0;
        }
        .scene-text ul li {
            padding: 6px 0 6px 24px;
            position: relative;
            font-size: 0.95rem;
            color: var(--dark);
        }
        .scene-text ul li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: 700;
        }
        @media (max-width: 768px) {
            .scene-row,
            .scene-row.reverse {
                flex-direction: column;
            }
        }

        /* 合集目录 */
        .collection-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 20px;
        }
        .collection-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 24px;
            text-align: center;
            transition: all var(--transition);
            cursor: pointer;
            position: relative;
            overflow: hidden;
        }
        .collection-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--primary);
        }
        .collection-card .coll-icon {
            font-size: 2.5rem;
            margin-bottom: 12px;
            display: block;
        }
        .collection-card h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .collection-card .coll-count {
            font-size: 0.85rem;
            color: var(--primary);
            font-weight: 600;
        }

        /* 套餐对比 */
        .plan-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            align-items: stretch;
        }
        .plan-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            border: 2px solid var(--border);
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition);
            position: relative;
        }
        .plan-card.featured {
            border-color: var(--primary);
            box-shadow: var(--shadow-lg);
            transform: scale(1.03);
            z-index: 1;
        }
        .plan-card .plan-badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent);
            color: var(--darker);
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
        }
        .plan-card h4 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .plan-card .plan-price {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .plan-card .plan-price span {
            font-size: 0.9rem;
            font-weight: 400;
            color: var(--gray);
        }
        .plan-card ul {
            list-style: none;
            padding: 0;
            margin-bottom: 20px;
            text-align: left;
        }
        .plan-card ul li {
            padding: 6px 0;
            font-size: 0.9rem;
            border-bottom: 1px solid var(--border);
            color: var(--dark);
        }
        .plan-card ul li::before {
            content: '✓ ';
            color: var(--primary);
            font-weight: 700;
        }
        @media (max-width: 768px) {
            .plan-grid {
                grid-template-columns: 1fr;
            }
            .plan-card.featured {
                transform: none;
            }
        }

        /* 底部固定转化条 */
        .bottom-sticky-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 60px;
            background: var(--darker);
            color: var(--white);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            z-index: 1000;
            font-size: 0.95rem;
            box-shadow: 0 -2px 16px rgba(0, 0, 0, 0.2);
        }
        .bottom-sticky-bar .sticky-btn {
            display: inline-block;
            background: var(--primary);
            color: var(--white);
            padding: 8px 24px;
            border-radius: 6px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .bottom-sticky-bar .sticky-btn:hover {
            background: var(--primary-dark);
            color: var(--white);
            transform: translateY(-1px);
        }
        @media (max-width: 768px) {
            .bottom-sticky-bar {
                height: 50px;
                font-size: 0.8rem;
                gap: 10px;
            }
            .bottom-sticky-bar .sticky-btn {
                padding: 6px 16px;
                font-size: 0.8rem;
            }
        }

        /* FAQ */
        .faq-list .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 20px 0;
            cursor: pointer;
        }
        .faq-list .faq-q {
            font-size: 1.05rem;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: color var(--transition);
        }
        .faq-list .faq-q:hover {
            color: var(--primary);
        }
        .faq-list .faq-a {
            font-size: 0.95rem;
            color: var(--gray);
            line-height: 1.7;
            margin-top: 10px;
            display: none;
        }
        .faq-list .faq-item.open .faq-a {
            display: block;
        }
        .faq-list .faq-item.open .faq-q {
            color: var(--primary);
        }
        .faq-list .faq-icon {
            transition: transform var(--transition);
            font-size: 0.9rem;
        }
        .faq-list .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }

        /* Footer */
        .site-footer {
            background: var(--darker);
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 0 32px;
            font-size: 0.9rem;
            line-height: 1.8;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 32px;
            margin-bottom: 32px;
        }
        .site-footer h4 {
            color: var(--white);
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .site-footer a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition);
        }
        .site-footer a:hover {
            color: var(--primary);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }
        .site-footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 8px;
        }

        /* 深度内容 */
        .deep-content {
            font-size: 1rem;
            line-height: 1.9;
            color: var(--dark);
        }
        .deep-content h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--dark);
        }
        .deep-content p {
            margin-bottom: 16px;
        }
        .bg-dark .deep-content {
            color: rgba(255, 255, 255, 0.85);
        }
        .bg-dark .deep-content h3 {
            color: var(--white);
        }

        /* 社会认同 */
        .stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            justify-content: center;
        }
        .stat-item {
            text-align: center;
            min-width: 140px;
        }
        .stat-item .stat-num {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary);
        }
        .stat-item .stat-label {
            font-size: 0.9rem;
            color: var(--gray);
        }
        .partner-logos {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            justify-content: center;
            align-items: center;
            margin-top: 32px;
        }
        .partner-logos span {
            font-size: 1.2rem;
            font-weight: 600;
            color: #9CA3AF;
            filter: grayscale(100%);
            transition: all var(--transition);
            cursor: default;
        }
        .partner-logos span:hover {
            filter: grayscale(0%);
            color: var(--dark);
        }
        .bg-dark .partner-logos span {
            color: rgba(255, 255, 255, 0.4);
        }
        .bg-dark .partner-logos span:hover {
            color: rgba(255, 255, 255, 0.8);
        }

        /* 按钮通用 */
        .btn-link-custom {
            color: var(--primary);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            cursor: pointer;
        }
        .btn-link-custom:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        .btn-link-custom i {
            margin-left: 4px;
            transition: transform var(--transition);
        }
        .btn-link-custom:hover i {
            transform: translateX(3px);
        }

        /* 品牌介绍 */
        .brand-intro {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
            align-items: flex-start;
        }
        .brand-intro .brand-text {
            flex: 2;
            min-width: 280px;
            font-size: 1rem;
            line-height: 1.9;
            color: var(--dark);
        }
        .brand-intro .brand-side {
            flex: 1;
            min-width: 220px;
            background: var(--lighter);
            border-radius: var(--radius-lg);
            padding: 24px;
            border: 1px solid var(--border);
        }
        .brand-intro .brand-side h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .brand-intro .brand-side p {
            font-size: 0.9rem;
            color: var(--gray);
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .brand-intro {
                flex-direction: column;
            }
        }

        /* 覆盖Bootstrap */
        .btn {
            border-radius: 6px;
            font-weight: 600;
            transition: all var(--transition);
        }
        .btn:focus {
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.25);
            outline: none;
        }
        a {
            color: inherit;
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 2px;
        }

/* roulang page: category2 */
:root {
            --primary: #FF6B35;
            --primary-dark: #E55A2B;
            --primary-light: #FF8A5C;
            --accent: #FFC107;
            --dark: #1A1A1A;
            --darker: #111827;
            --gray: #6B7280;
            --light-gray: #F3F4F6;
            --lighter: #F8F9FA;
            --border: #E5E7EB;
            --white: #FFFFFF;
            --radius: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
            --transition: 0.2s ease;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Source Han Sans CN', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
        }

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

        body {
            font-family: var(--font-sans);
            font-weight: 400;
            line-height: 1.7;
            color: var(--dark);
            background: var(--white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            padding-bottom: 60px;
        }

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

        a:hover {
            color: var(--primary);
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-lg);
        }

        .main-nav {
            display: flex;
            align-items: center;
            justify-content: center;
            height: 68px;
            position: relative;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .nav-logo {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--dark);
            white-space: nowrap;
            z-index: 2;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: var(--white);
            border-radius: 50%;
            font-size: 1.1rem;
            font-weight: 700;
        }

        .nav-logo:hover {
            color: var(--primary);
        }

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

        .nav-links-left {
            margin-right: auto;
            padding-right: 140px;
        }

        .nav-links-right {
            margin-left: auto;
            padding-left: 140px;
        }

        .nav-links-left a,
        .nav-links-right a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 0.95rem;
            font-weight: 500;
            color: #374151;
            border-radius: 6px;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition), background var(--transition);
        }

        .nav-links-left a::after,
        .nav-links-right a::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: transform var(--transition);
        }

        .nav-links-left a:hover,
        .nav-links-right a:hover {
            color: var(--primary);
            background: rgba(255, 107, 53, 0.05);
        }

        .nav-links-left a:hover::after,
        .nav-links-right a:hover::after {
            transform: translateX(-50%) scaleX(1);
        }

        .nav-links-left a.active,
        .nav-links-right a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-links-left a.active::after,
        .nav-links-right a.active::after {
            transform: translateX(-50%) scaleX(1);
        }

        .nav-home-link {
            font-weight: 600 !important;
        }

        .hamburger-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark);
            padding: 8px;
            z-index: 3;
            position: absolute;
            right: 16px;
            top: 50%;
            transform: translateY(-50%);
        }

        /* Mobile Nav Overlay */
        .mobile-menu-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.6);
            z-index: 1040;
            display: none;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .mobile-menu-overlay.active {
            display: block;
            opacity: 1;
        }

        .mobile-menu-panel {
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            height: 100%;
            background: var(--white);
            z-index: 1051;
            padding: 60px 24px 24px;
            overflow-y: auto;
            transition: right 0.3s ease;
            box-shadow: -4px 0 24px rgba(0, 0, 0, 0.15);
        }

        .mobile-menu-panel.active {
            right: 0;
        }

        .mobile-menu-panel a {
            display: block;
            padding: 14px 16px;
            font-size: 1.05rem;
            font-weight: 500;
            color: var(--dark);
            border-radius: 8px;
            margin-bottom: 4px;
            transition: all var(--transition);
        }

        .mobile-menu-panel a:hover,
        .mobile-menu-panel a.active {
            background: var(--primary);
            color: var(--white);
        }

        .mobile-menu-close {
            position: absolute;
            top: 16px;
            right: 20px;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark);
            z-index: 2;
        }

        /* Buttons */
        .btn-primary-custom {
            display: inline-block;
            background: var(--primary);
            color: var(--white);
            padding: 0.75rem 2rem;
            border-radius: 6px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
        }

        .btn-primary-custom:hover {
            background: var(--primary-dark);
            color: var(--white);
            transform: translateY(-1px);
            box-shadow: var(--shadow);
        }

        .btn-outline-custom {
            display: inline-block;
            background: transparent;
            color: var(--primary);
            padding: 0.7rem 1.9rem;
            border-radius: 6px;
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid var(--primary);
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
        }

        .btn-outline-custom:hover {
            background: rgba(255, 107, 53, 0.06);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        .btn-white-custom {
            display: inline-block;
            background: var(--white);
            color: var(--primary);
            padding: 0.75rem 2rem;
            border-radius: 6px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
        }

        .btn-white-custom:hover {
            background: #f0f0f0;
            color: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: var(--shadow);
        }

        /* Section spacing */
        .section-py {
            padding: 70px 0;
        }

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

        /* Hero - Coupon Wall Style */
        .hero-data {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            background-attachment: fixed;
            overflow: hidden;
        }

        .hero-data::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(17, 24, 39, 0.92) 0%, rgba(26, 26, 26, 0.85) 40%, rgba(17, 24, 39, 0.9) 100%);
            z-index: 1;
        }

        .hero-data .hero-inner {
            position: relative;
            z-index: 2;
            width: 100%;
            text-align: center;
            padding: 40px 0;
        }

        .hero-data .hero-badge {
            display: inline-block;
            background: var(--accent);
            color: var(--darker);
            padding: 6px 18px;
            border-radius: 20px;
            font-weight: 700;
            font-size: 0.9rem;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }

        .hero-data .hero-title {
            font-size: 3.2rem;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 16px;
            line-height: 1.25;
            letter-spacing: 0.5px;
        }

        .hero-data .hero-subtitle {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 650px;
            margin: 0 auto 40px;
            line-height: 1.6;
        }

        /* Coupon Cards Wall */
        .coupon-wall {
            display: flex;
            align-items: flex-end;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            max-width: 1000px;
            margin: 0 auto;
        }

        .coupon-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 28px 24px 24px;
            text-align: center;
            box-shadow: var(--shadow-lg);
            transition: all 0.35s ease;
            position: relative;
            width: 260px;
            border: 2px solid transparent;
            flex-shrink: 0;
        }

        .coupon-card.featured {
            width: 300px;
            border-color: var(--accent);
            transform: translateY(-16px);
            box-shadow: 0 16px 48px rgba(255, 193, 7, 0.25);
            z-index: 3;
            padding: 34px 28px 28px;
        }

        .coupon-card.featured .coupon-ribbon {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent);
            color: var(--darker);
            padding: 5px 20px;
            border-radius: 20px;
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .coupon-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.14);
        }

        .coupon-card.featured:hover {
            transform: translateY(-20px);
            box-shadow: 0 20px 56px rgba(255, 193, 7, 0.3);
        }

        .coupon-card .coupon-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--light-gray);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            margin-bottom: 14px;
        }

        .coupon-card.featured .coupon-icon {
            width: 64px;
            height: 64px;
            font-size: 1.9rem;
            background: #FFF3E0;
            color: var(--primary-dark);
        }

        .coupon-card .coupon-name {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 6px;
        }

        .coupon-card.featured .coupon-name {
            font-size: 1.4rem;
        }

        .coupon-card .coupon-price {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .coupon-card.featured .coupon-price {
            font-size: 2.6rem;
        }

        .coupon-card .coupon-price span {
            font-size: 0.9rem;
            font-weight: 400;
            color: var(--gray);
        }

        .coupon-card .coupon-features {
            list-style: none;
            padding: 0;
            margin: 14px 0 18px;
            text-align: left;
            font-size: 0.85rem;
            color: #4B5563;
        }

        .coupon-card .coupon-features li {
            padding: 4px 0;
            padding-left: 20px;
            position: relative;
        }

        .coupon-card .coupon-features li::before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            color: var(--primary);
            font-size: 0.7rem;
            top: 6px;
        }

        .coupon-card .btn-primary-custom {
            width: 100%;
            padding: 0.65rem 1rem;
            font-size: 0.9rem;
        }

        .coupon-card.featured .btn-primary-custom {
            padding: 0.8rem 1rem;
            font-size: 1rem;
            background: var(--accent);
            color: var(--darker);
            font-weight: 700;
        }

        .coupon-card.featured .btn-primary-custom:hover {
            background: #e6a800;
            color: var(--darker);
        }

        /* Section Titles */
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 10px;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--gray);
            margin-bottom: 40px;
            max-width: 600px;
        }

        .section-title-group {
            margin-bottom: 40px;
        }

        .section-title-group.text-center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* Cards */
        .info-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 28px 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            height: 100%;
        }

        .info-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: #d1d5db;
        }

        .info-card .card-icon {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: #FFF3E0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--primary);
            margin-bottom: 16px;
        }

        .info-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--dark);
        }

        .info-card p {
            font-size: 0.95rem;
            color: #4B5563;
            line-height: 1.65;
            margin: 0;
        }

        /* Image-text block */
        .img-text-block {
            display: flex;
            align-items: center;
            gap: 50px;
            flex-wrap: wrap;
        }

        .img-text-block.reverse {
            flex-direction: row-reverse;
        }

        .img-text-block .img-side {
            flex: 1;
            min-width: 300px;
        }

        .img-text-block .img-side img {
            border-radius: var(--radius-lg);
            width: 100%;
            box-shadow: var(--shadow);
            object-fit: cover;
            aspect-ratio: 16/10;
        }

        .img-text-block .text-side {
            flex: 1;
            min-width: 300px;
        }

        .img-text-block .text-side h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--dark);
        }

        .img-text-block .text-side p {
            font-size: 1rem;
            color: #4B5563;
            line-height: 1.75;
            margin-bottom: 12px;
        }

        /* Stats bar */
        .stats-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
            justify-content: center;
            text-align: center;
        }

        .stat-item {
            flex: 1;
            min-width: 160px;
            padding: 20px;
        }

        .stat-number {
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.1;
        }

        .stat-label {
            font-size: 0.95rem;
            color: var(--gray);
            margin-top: 6px;
        }

        /* Process / Steps */
        .process-row {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            justify-content: center;
            position: relative;
        }

        .process-step {
            flex: 1;
            min-width: 200px;
            max-width: 260px;
            text-align: center;
            padding: 24px 16px;
            position: relative;
            background: var(--white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

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

        .process-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--white);
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: 12px;
        }

        .process-step h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--dark);
        }

        .process-step p {
            font-size: 0.9rem;
            color: #4B5563;
            line-height: 1.6;
            margin: 0;
        }

        .process-connector {
            display: none;
        }

        /* FAQ */
        .faq-section {
            background: var(--lighter);
        }

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

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

        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1.05rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            color: var(--dark);
            user-select: none;
            transition: color var(--transition);
        }

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

        .faq-question .faq-icon {
            transition: transform 0.3s ease;
            color: var(--primary);
            font-size: 0.9rem;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            font-size: 0.95rem;
            color: #4B5563;
            line-height: 1.7;
        }

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

        /* CTA Section */
        .cta-section {
            background: var(--darker);
            color: var(--white);
            text-align: center;
            padding: 60px 0;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 28px;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
        }

        /* Deep content */
        .deep-content {
            font-size: 1rem;
            line-height: 1.85;
            color: #374151;
        }

        .deep-content h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 16px;
        }

        .deep-content p {
            margin-bottom: 16px;
        }

        .deep-content ul {
            padding-left: 20px;
            margin-bottom: 16px;
        }

        .deep-content ul li {
            margin-bottom: 8px;
            position: relative;
            padding-left: 4px;
        }

        /* Bottom fixed bar */
        .bottom-fixed-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 60px;
            background: var(--darker);
            z-index: 1030;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            padding: 0 20px;
            box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.2);
        }

        .bottom-fixed-bar .bar-text {
            color: var(--white);
            font-weight: 500;
            font-size: 0.95rem;
            white-space: nowrap;
        }

        .bottom-fixed-bar .btn-primary-custom {
            padding: 0.55rem 1.6rem;
            font-size: 0.9rem;
            white-space: nowrap;
        }

        /* Footer */
        .site-footer {
            background: var(--darker);
            color: #D1D5DB;
            padding: 50px 0 30px;
            font-size: 0.9rem;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-bottom: 30px;
        }

        .site-footer .footer-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 8px;
        }

        .site-footer h4 {
            color: var(--white);
            font-weight: 600;
            font-size: 1rem;
            margin-bottom: 12px;
        }

        .site-footer a {
            color: #9CA3AF;
            font-size: 0.85rem;
            line-height: 2;
            transition: color var(--transition);
        }

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

        .site-footer .footer-bottom {
            border-top: 1px solid #374151;
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: #9CA3AF;
            line-height: 2;
        }

        .site-footer .footer-bottom a {
            color: #9CA3AF;
        }

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

        /* Responsive */
        @media (max-width: 1199px) {
            .nav-links-left {
                padding-right: 120px;
            }

            .nav-links-right {
                padding-left: 120px;
            }

            .nav-links-left a,
            .nav-links-right a {
                padding: 6px 10px;
                font-size: 0.85rem;
            }

            .hero-data .hero-title {
                font-size: 2.6rem;
            }

            .coupon-card {
                width: 220px;
                padding: 22px 16px 18px;
            }

            .coupon-card.featured {
                width: 260px;
                padding: 28px 20px 22px;
            }

            .coupon-card .coupon-price {
                font-size: 1.8rem;
            }

            .coupon-card.featured .coupon-price {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 991px) {
            .nav-links-left,
            .nav-links-right {
                display: none;
            }

            .nav-logo {
                position: static;
                transform: none;
                margin: 0 auto;
            }

            .hamburger-toggle {
                display: block;
            }

            .main-nav {
                justify-content: space-between;
                padding: 0 16px;
            }

            .hero-data .hero-title {
                font-size: 2.2rem;
            }

            .hero-data .hero-subtitle {
                font-size: 1rem;
            }

            .coupon-wall {
                gap: 14px;
            }

            .coupon-card {
                width: 180px;
                padding: 18px 12px 16px;
            }

            .coupon-card.featured {
                width: 210px;
                padding: 24px 16px 20px;
                transform: translateY(-10px);
            }

            .coupon-card .coupon-price {
                font-size: 1.5rem;
            }

            .coupon-card.featured .coupon-price {
                font-size: 1.8rem;
            }

            .coupon-card .coupon-features {
                font-size: 0.75rem;
            }

            .img-text-block {
                gap: 30px;
            }

            .img-text-block .text-side h3 {
                font-size: 1.3rem;
            }

            .site-footer .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 767px) {
            .hero-data {
                min-height: auto;
                padding: 80px 0 40px;
                background-attachment: scroll;
            }

            .hero-data .hero-title {
                font-size: 1.8rem;
            }

            .hero-data .hero-subtitle {
                font-size: 0.9rem;
                margin-bottom: 28px;
            }

            .coupon-wall {
                flex-direction: column;
                align-items: center;
                gap: 16px;
            }

            .coupon-card {
                width: 100%;
                max-width: 360px;
            }

            .coupon-card.featured {
                width: 100%;
                max-width: 380px;
                transform: translateY(0);
                order: -1;
            }

            .coupon-card.featured:hover {
                transform: translateY(-4px);
            }

            .section-title {
                font-size: 1.5rem;
            }

            .section-subtitle {
                font-size: 0.9rem;
            }

            .img-text-block,
            .img-text-block.reverse {
                flex-direction: column;
                gap: 24px;
            }

            .img-text-block .img-side,
            .img-text-block .text-side {
                min-width: 100%;
            }

            .stats-bar {
                gap: 16px;
            }

            .stat-number {
                font-size: 2.2rem;
            }

            .process-row {
                flex-direction: column;
                align-items: center;
            }

            .process-step {
                max-width: 100%;
                width: 100%;
            }

            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }

            .bottom-fixed-bar {
                height: 50px;
                gap: 12px;
                padding: 0 12px;
            }

            .bottom-fixed-bar .bar-text {
                font-size: 0.8rem;
            }

            .bottom-fixed-bar .btn-primary-custom {
                padding: 0.45rem 1rem;
                font-size: 0.8rem;
            }

            .container-custom {
                padding: 0 16px;
            }

            .section-py {
                padding: 40px 0;
            }

            .cta-section h2 {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .hero-data .hero-title {
                font-size: 1.5rem;
            }

            .coupon-card {
                max-width: 100%;
            }

            .coupon-card.featured {
                max-width: 100%;
            }

            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .stat-number {
                font-size: 1.8rem;
            }

            .bottom-fixed-bar .bar-text {
                font-size: 0.7rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #FF6B35;
            --primary-dark: #E55A2B;
            --primary-light: #FF8A5C;
            --accent: #FFC107;
            --dark: #1A1A1A;
            --darker: #111827;
            --gray: #6B7280;
            --light-gray: #F3F4F6;
            --lighter: #F8F9FA;
            --border: #E5E7EB;
            --white: #FFFFFF;
            --radius: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
            --transition: 0.2s ease;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Source Han Sans CN', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-weight: 400;
            line-height: 1.7;
            color: var(--dark);
            background: var(--white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            padding-bottom: 70px;
            margin: 0;
        }

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

        a:hover {
            color: var(--primary);
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }

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

        h1 {
            font-size: 2.5rem;
        }
        h2 {
            font-size: 2rem;
        }
        h3 {
            font-size: 1.5rem;
        }
        h4 {
            font-size: 1.125rem;
        }

        p {
            margin-bottom: 1.5em;
            color: var(--dark);
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-lg);
        }

        .main-nav {
            display: flex;
            align-items: center;
            justify-content: center;
            height: 68px;
            position: relative;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .nav-logo {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--dark);
            white-space: nowrap;
            z-index: 2;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: var(--white);
            border-radius: 50%;
            font-size: 1.1rem;
            font-weight: 700;
        }

        .nav-logo:hover {
            color: var(--primary);
        }

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

        .nav-links-left {
            margin-right: auto;
            padding-right: 140px;
        }

        .nav-links-right {
            margin-left: auto;
            padding-left: 140px;
        }

        .nav-links-left a,
        .nav-links-right a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 0.95rem;
            font-weight: 500;
            color: #374151;
            border-radius: 6px;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition), background var(--transition);
        }

        .nav-links-left a::after,
        .nav-links-right a::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: transform var(--transition);
        }

        .nav-links-left a:hover,
        .nav-links-right a:hover {
            color: var(--primary);
            background: rgba(255, 107, 53, 0.05);
        }

        .nav-links-left a:hover::after,
        .nav-links-right a:hover::after {
            transform: translateX(-50%) scaleX(1);
        }

        .nav-links-left a.active,
        .nav-links-right a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-links-left a.active::after,
        .nav-links-right a.active::after {
            transform: translateX(-50%) scaleX(1);
        }

        .nav-home-link {
            font-weight: 600 !important;
        }

        .hamburger-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark);
            padding: 8px;
            z-index: 3;
            position: absolute;
            right: 16px;
            top: 50%;
            transform: translateY(-50%);
        }

        /* Mobile Menu Overlay */
        .mobile-menu-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.6);
            z-index: 1040;
            display: none;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .mobile-menu-overlay.active {
            display: block;
            opacity: 1;
        }

        .mobile-menu-panel {
            position: fixed;
            top: 0;
            right: 0;
            width: 280px;
            height: 100%;
            background: var(--white);
            z-index: 1045;
            transform: translateX(100%);
            transition: transform 0.3s ease;
            padding: 24px;
            overflow-y: auto;
            box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
        }

        .mobile-menu-panel.active {
            transform: translateX(0);
        }

        .mobile-menu-panel .mobile-close {
            display: block;
            text-align: right;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark);
            margin-bottom: 20px;
            background: none;
            border: none;
            padding: 8px;
        }

        .mobile-menu-panel a {
            display: block;
            padding: 12px 16px;
            font-size: 1rem;
            font-weight: 500;
            color: #374151;
            border-radius: 6px;
            margin-bottom: 4px;
            transition: all var(--transition);
        }

        .mobile-menu-panel a:hover,
        .mobile-menu-panel a.active {
            color: var(--primary);
            background: rgba(255, 107, 53, 0.06);
            font-weight: 600;
        }

        /* Breadcrumb */
        .breadcrumb-bar {
            background: var(--lighter);
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
            font-size: 0.9rem;
            color: var(--gray);
        }

        .breadcrumb-bar a {
            color: var(--gray);
            transition: color var(--transition);
        }

        .breadcrumb-bar a:hover {
            color: var(--primary);
        }

        .breadcrumb-bar .separator {
            margin: 0 8px;
            color: #c0c7cf;
        }

        .breadcrumb-bar .current {
            color: var(--dark);
            font-weight: 500;
        }

        /* Buttons */
        .btn-primary-custom {
            display: inline-block;
            background: var(--primary);
            color: var(--white);
            font-weight: 600;
            font-size: 1rem;
            padding: 0.75rem 2rem;
            border-radius: 6px;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            white-space: nowrap;
        }

        .btn-primary-custom:hover {
            background: var(--primary-dark);
            color: var(--white);
            transform: translateY(-1px);
            box-shadow: var(--shadow);
        }

        .btn-outline-custom {
            display: inline-block;
            background: transparent;
            color: var(--primary);
            font-weight: 600;
            font-size: 1rem;
            padding: 0.75rem 2rem;
            border-radius: 6px;
            border: 2px solid var(--primary);
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            white-space: nowrap;
        }

        .btn-outline-custom:hover {
            background: rgba(255, 107, 53, 0.06);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        .btn-outline-white {
            display: inline-block;
            background: transparent;
            color: var(--white);
            font-weight: 600;
            font-size: 1rem;
            padding: 0.75rem 2rem;
            border-radius: 6px;
            border: 2px solid var(--white);
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            white-space: nowrap;
        }

        .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.15);
            color: var(--white);
        }

        .btn-sm {
            font-size: 0.875rem;
            padding: 0.5rem 1.25rem;
        }

        .btn-lg {
            font-size: 1.1rem;
            padding: 0.9rem 2.5rem;
        }

        /* Hero */
        .hero-section {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            background-attachment: fixed;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(17, 24, 39, 0.88) 0%, rgba(26, 26, 26, 0.78) 50%, rgba(255, 107, 53, 0.35) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            color: var(--white);
            padding: 60px 0;
        }

        .hero-content h1 {
            color: var(--white);
            font-size: 3rem;
            font-weight: 700;
            margin-bottom: 1rem;
            line-height: 1.2;
        }

        .hero-content .hero-subtitle {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 1.5rem;
            max-width: 600px;
            line-height: 1.7;
        }

        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 1.5rem;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--white);
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 500;
            white-space: nowrap;
        }

        .hero-badge i {
            color: var(--accent);
            font-size: 0.85rem;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 8px;
        }

        .hero-qualification {
            display: inline-block;
            background: rgba(255, 193, 7, 0.2);
            border: 1px solid rgba(255, 193, 7, 0.4);
            color: var(--accent);
            padding: 8px 16px;
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 500;
            margin-bottom: 1rem;
        }

        /* Section */
        .section {
            padding: 70px 0;
        }

        .section-alt {
            background: var(--lighter);
        }

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

        .section-dark h2,
        .section-dark h3,
        .section-dark p {
            color: var(--white);
        }

        .section-title {
            text-align: center;
            margin-bottom: 3rem;
        }

        .section-title h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }

        .section-title .section-desc {
            color: var(--gray);
            font-size: 1.05rem;
            max-width: 650px;
            margin: 0 auto;
        }

        .section-dark .section-title .section-desc {
            color: rgba(255, 255, 255, 0.7);
        }

        /* Cards */
        .card-custom {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 1.5rem;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .card-custom:hover {
            box-shadow: var(--shadow);
            transform: translateY(-2px);
            border-color: #d1d5db;
        }

        .card-custom .card-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            background: rgba(255, 107, 53, 0.1);
            color: var(--primary);
            border-radius: 12px;
            font-size: 1.4rem;
            margin-bottom: 1rem;
            flex-shrink: 0;
        }

        .card-custom h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.6rem;
        }

        .card-custom p {
            font-size: 0.95rem;
            color: var(--gray);
            line-height: 1.7;
            margin-bottom: 0;
            flex-grow: 1;
        }

        /* Content Card (分类内容卡片) */
        .content-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .content-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-2px);
        }

        .content-card .card-thumb {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--light-gray);
        }

        .content-card .card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .content-card:hover .card-thumb img {
            transform: scale(1.04);
        }

        .content-card .card-body {
            padding: 1.25rem;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .content-card .card-date {
            font-size: 0.8rem;
            color: var(--gray);
            margin-bottom: 0.5rem;
        }

        .content-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }

        .content-card .card-excerpt {
            font-size: 0.9rem;
            color: var(--gray);
            line-height: 1.6;
            flex-grow: 1;
            margin-bottom: 0.75rem;
        }

        .content-card .read-more {
            font-weight: 600;
            color: var(--primary);
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition);
        }

        .content-card .read-more:hover {
            gap: 8px;
            color: var(--primary-dark);
        }

        /* Scene Demo */
        .scene-block {
            display: flex;
            align-items: center;
            gap: 3rem;
            margin-bottom: 3rem;
        }

        .scene-block.reverse {
            flex-direction: row-reverse;
        }

        .scene-block .scene-img {
            flex: 0 0 45%;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
        }

        .scene-block .scene-img img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4/3;
        }

        .scene-block .scene-text {
            flex: 1;
        }

        .scene-block .scene-text h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }

        .scene-block .scene-text p {
            font-size: 1rem;
            color: var(--gray);
            line-height: 1.8;
        }

        .scene-block .scene-text ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .scene-block .scene-text ul li {
            padding: 6px 0 6px 24px;
            position: relative;
            font-size: 0.95rem;
            color: var(--dark);
        }

        .scene-block .scene-text ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 14px;
            width: 8px;
            height: 8px;
            background: var(--primary);
            border-radius: 50%;
        }

        /* Stats */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }

        .stat-item {
            padding: 1.5rem;
            background: rgba(255, 255, 255, 0.08);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.12);
        }

        .stat-item .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 0.4rem;
            line-height: 1;
        }

        .stat-item .stat-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.8);
        }

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

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

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

        .faq-question {
            padding: 18px 20px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: var(--white);
            border: none;
            width: 100%;
            text-align: left;
            color: var(--dark);
            transition: color var(--transition);
        }

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

        .faq-question .faq-icon {
            transition: transform 0.3s ease;
            color: var(--gray);
            font-size: 0.9rem;
            flex-shrink: 0;
            margin-left: 12px;
        }

        .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;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            font-size: 0.95rem;
            color: var(--gray);
            line-height: 1.7;
            margin: 0;
        }

        /* Pagination */
        .pagination-custom {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 2rem;
            flex-wrap: wrap;
        }

        .pagination-custom .page-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 12px;
            border-radius: 6px;
            font-weight: 500;
            font-size: 0.9rem;
            color: var(--dark);
            background: var(--white);
            border: 1px solid var(--border);
            transition: all var(--transition);
            cursor: pointer;
        }

        .pagination-custom .page-link:hover {
            background: rgba(255, 107, 53, 0.06);
            border-color: var(--primary);
            color: var(--primary);
        }

        .pagination-custom .page-link.active {
            background: var(--primary);
            color: var(--white);
            border-color: var(--primary);
            font-weight: 600;
        }

        .pagination-custom .page-link.disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 60px 0;
            text-align: center;
            color: var(--white);
        }

        .cta-section h2 {
            color: var(--white);
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.9);
            font-size: 1.1rem;
            margin-bottom: 1.5rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        /* Fixed Bottom Bar */
        .fixed-bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: var(--darker);
            color: var(--white);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            z-index: 1030;
            padding: 0 20px;
            box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.15);
        }

        .fixed-bottom-bar .bar-text {
            font-size: 0.95rem;
            font-weight: 500;
            white-space: nowrap;
        }

        .fixed-bottom-bar .btn-primary-custom {
            padding: 0.5rem 1.5rem;
            font-size: 0.9rem;
            white-space: nowrap;
        }

        /* Footer */
        .site-footer {
            background: var(--darker);
            color: rgba(255, 255, 255, 0.75);
            padding: 50px 0 30px;
            font-size: 0.9rem;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 30px;
            margin-bottom: 30px;
        }

        .site-footer .footer-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 0.5rem;
        }

        .site-footer h4 {
            color: var(--white);
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 0.75rem;
        }

        .site-footer a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.85rem;
            line-height: 2;
            transition: color var(--transition);
        }

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

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.5);
            line-height: 2;
        }

        .site-footer .footer-bottom a {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.55);
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .nav-links-left {
                padding-right: 100px;
                gap: 2px;
            }
            .nav-links-right {
                padding-left: 100px;
                gap: 2px;
            }
            .nav-links-left a,
            .nav-links-right a {
                padding: 6px 10px;
                font-size: 0.85rem;
            }
            .nav-logo {
                font-size: 1.3rem;
            }
            .hero-content h1 {
                font-size: 2.4rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scene-block {
                gap: 2rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .nav-links-left,
            .nav-links-right {
                display: none;
            }
            .nav-logo {
                position: static;
                transform: none;
                margin: 0 auto;
                font-size: 1.2rem;
            }
            .hamburger-toggle {
                display: block;
            }
            .main-nav {
                justify-content: space-between;
                padding: 0 16px;
            }
            .hero-section {
                min-height: 55vh;
                background-attachment: scroll;
            }
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .hero-content .hero-subtitle {
                font-size: 1rem;
            }
            .hero-badges {
                gap: 8px;
            }
            .hero-badge {
                font-size: 0.8rem;
                padding: 6px 12px;
            }
            .section {
                padding: 45px 0;
            }
            .section-title h2 {
                font-size: 1.5rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .stat-number {
                font-size: 1.8rem;
            }
            .scene-block {
                flex-direction: column !important;
                gap: 1.5rem;
            }
            .scene-block .scene-img {
                flex: 0 0 auto;
                width: 100%;
            }
            .content-card h3 {
                font-size: 1rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
                text-align: center;
            }
            .fixed-bottom-bar {
                height: 50px;
                gap: 10px;
                padding: 0 12px;
            }
            .fixed-bottom-bar .bar-text {
                font-size: 0.8rem;
            }
            .fixed-bottom-bar .btn-primary-custom {
                padding: 0.4rem 1rem;
                font-size: 0.8rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .breadcrumb-bar {
                font-size: 0.8rem;
                padding: 10px 0;
            }
            .container-custom {
                padding: 0 16px;
            }
            .hero-cta-group {
                flex-direction: column;
                gap: 10px;
            }
            .hero-cta-group .btn-primary-custom,
            .hero-cta-group .btn-outline-white {
                width: 100%;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 1.5rem;
            }
            .hero-section {
                min-height: 50vh;
            }
            .hero-badges {
                flex-direction: column;
                gap: 6px;
            }
            .hero-badge {
                width: fit-content;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-item {
                padding: 1rem;
            }
            .stat-item .stat-number {
                font-size: 1.5rem;
            }
            .pagination-custom .page-link {
                min-width: 34px;
                height: 34px;
                font-size: 0.8rem;
                padding: 0 8px;
            }
            .section-title h2 {
                font-size: 1.35rem;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #FF6B35;
            --primary-dark: #E55A2B;
            --primary-light: #FF8A5C;
            --accent: #FFC107;
            --dark: #1A1A1A;
            --darker: #111827;
            --gray: #6B7280;
            --light-gray: #F3F4F6;
            --lighter: #F8F9FA;
            --border: #E5E7EB;
            --white: #FFFFFF;
            --radius: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
            --transition: 0.2s ease;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Source Han Sans CN', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-weight: 400;
            line-height: 1.7;
            color: var(--dark);
            background: var(--white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            padding-bottom: 60px;
            margin: 0;
        }

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

        a:hover {
            color: var(--primary);
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }

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

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

        h1 {
            font-size: 2.5rem;
        }

        h2 {
            font-size: 2rem;
        }

        h3 {
            font-size: 1.5rem;
        }

        h4 {
            font-size: 1.125rem;
        }

        p {
            margin-top: 0;
            margin-bottom: 1rem;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-lg);
        }

        .main-nav {
            display: flex;
            align-items: center;
            justify-content: center;
            height: 68px;
            position: relative;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .nav-logo {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--dark);
            white-space: nowrap;
            z-index: 2;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: var(--white);
            border-radius: 50%;
            font-size: 1.1rem;
            font-weight: 700;
        }

        .nav-logo:hover {
            color: var(--primary);
        }

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

        .nav-links-left {
            margin-right: auto;
            padding-right: 140px;
        }

        .nav-links-right {
            margin-left: auto;
            padding-left: 140px;
        }

        .nav-links-left a,
        .nav-links-right a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 0.95rem;
            font-weight: 500;
            color: #374151;
            border-radius: 6px;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition), background var(--transition);
        }

        .nav-links-left a::after,
        .nav-links-right a::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: transform var(--transition);
        }

        .nav-links-left a:hover,
        .nav-links-right a:hover {
            color: var(--primary);
            background: rgba(255, 107, 53, 0.05);
        }

        .nav-links-left a:hover::after,
        .nav-links-right a:hover::after {
            transform: translateX(-50%) scaleX(1);
        }

        .nav-links-left a.active,
        .nav-links-right a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-links-left a.active::after,
        .nav-links-right a.active::after {
            transform: translateX(-50%) scaleX(1);
        }

        .nav-home-link {
            font-weight: 600 !important;
        }

        .hamburger-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark);
            padding: 8px;
            z-index: 3;
            position: absolute;
            right: 16px;
            top: 50%;
            transform: translateY(-50%);
        }

        .mobile-menu-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.6);
            z-index: 1040;
            display: none;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .mobile-menu-overlay.active {
            display: block;
            opacity: 1;
        }

        .mobile-menu-panel {
            position: fixed;
            top: 0;
            right: -300px;
            width: 280px;
            height: 100%;
            background: var(--white);
            z-index: 1055;
            padding: 24px;
            transition: right 0.3s ease;
            overflow-y: auto;
            box-shadow: -4px 0 24px rgba(0, 0, 0, 0.15);
        }

        .mobile-menu-panel.active {
            right: 0;
        }

        .mobile-menu-panel a {
            display: block;
            padding: 12px 16px;
            font-size: 1rem;
            font-weight: 500;
            color: var(--dark);
            border-radius: 6px;
            margin-bottom: 4px;
            transition: all var(--transition);
        }

        .mobile-menu-panel a:hover,
        .mobile-menu-panel a.active {
            color: var(--primary);
            background: rgba(255, 107, 53, 0.06);
            font-weight: 600;
        }

        .mobile-menu-close {
            display: flex;
            justify-content: flex-end;
            margin-bottom: 16px;
        }

        .mobile-menu-close button {
            background: none;
            border: none;
            font-size: 1.4rem;
            cursor: pointer;
            color: var(--dark);
            padding: 6px;
        }

        /* Breadcrumb */
        .breadcrumb-section {
            background: var(--lighter);
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.875rem;
            color: var(--gray);
            flex-wrap: wrap;
        }

        .breadcrumb-nav a {
            color: var(--gray);
            transition: color var(--transition);
        }

        .breadcrumb-nav a:hover {
            color: var(--primary);
        }

        .breadcrumb-nav .separator {
            color: #D1D5DB;
            user-select: none;
        }

        .breadcrumb-nav .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* Hero */
        .hero-section {
            background: linear-gradient(170deg, #1A1A1A 0%, #2D2D2D 40%, #1F1F1F 100%);
            color: var(--white);
            padding: 64px 0 56px;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 107, 53, 0.25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 193, 7, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-inner {
            display: flex;
            align-items: center;
            gap: 48px;
            position: relative;
            z-index: 1;
        }

        .hero-avatar-area {
            flex-shrink: 0;
            text-align: center;
        }

        .hero-avatar-wrapper {
            width: 140px;
            height: 140px;
            border-radius: 50%;
            overflow: hidden;
            border: 4px solid rgba(255, 255, 255, 0.3);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
            margin: 0 auto 16px;
            background: var(--darker);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-avatar-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .hero-avatar-wrapper .avatar-icon {
            font-size: 3.5rem;
            color: var(--primary-light);
        }

        .hero-badge-row {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--white);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            white-space: nowrap;
            backdrop-filter: blur(4px);
        }

        .hero-badge.accent-badge {
            background: var(--accent);
            color: var(--darker);
            border-color: var(--accent);
            font-weight: 700;
        }

        .hero-text-area {
            flex: 1;
        }

        .hero-text-area h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--white);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .hero-text-area h1 .highlight {
            color: var(--primary-light);
        }

        .hero-text-area .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 24px;
            line-height: 1.7;
            max-width: 600px;
        }

        .hero-cta-row {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .btn-primary-custom {
            display: inline-block;
            background: var(--primary);
            color: var(--white);
            border: none;
            padding: 12px 28px;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            white-space: nowrap;
        }

        .btn-primary-custom:hover {
            background: var(--primary-dark);
            color: var(--white);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(255, 107, 53, 0.35);
        }

        .btn-outline-custom {
            display: inline-block;
            background: transparent;
            color: var(--white);
            border: 2px solid rgba(255, 255, 255, 0.5);
            padding: 11px 26px;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            white-space: nowrap;
        }

        .btn-outline-custom:hover {
            border-color: var(--white);
            background: rgba(255, 255, 255, 0.08);
            color: var(--white);
            transform: translateY(-1px);
        }

        /* Section */
        .section-padding {
            padding: 64px 0;
        }

        .section-padding-sm {
            padding: 48px 0;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--dark);
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--gray);
            margin-bottom: 40px;
            max-width: 700px;
        }

        .section-header-center {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header-center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* Cards */
        .card-custom {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .card-custom:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: #D1D5DB;
        }

        .card-custom .card-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: var(--radius);
            background: rgba(255, 107, 53, 0.1);
            color: var(--primary);
            font-size: 1.5rem;
            margin-bottom: 16px;
            flex-shrink: 0;
        }

        .card-custom h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--dark);
        }

        .card-custom p {
            font-size: 0.95rem;
            color: var(--gray);
            line-height: 1.7;
            flex: 1;
        }

        /* Image text block */
        .img-text-block {
            display: flex;
            align-items: center;
            gap: 48px;
            margin-bottom: 48px;
        }

        .img-text-block.reverse {
            flex-direction: row-reverse;
        }

        .img-text-block .img-side {
            flex: 0 0 45%;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
        }

        .img-text-block .img-side img {
            width: 100%;
            height: auto;
            display: block;
        }

        .img-text-block .text-side {
            flex: 1;
        }

        .img-text-block .text-side h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--dark);
        }

        .img-text-block .text-side p {
            font-size: 1rem;
            color: var(--gray);
            line-height: 1.8;
            margin-bottom: 12px;
        }

        /* Deep content */
        .deep-content-block {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 40px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }

        .deep-content-block h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--dark);
        }

        .deep-content-block p {
            font-size: 1rem;
            line-height: 1.85;
            color: #374151;
            margin-bottom: 16px;
        }

        .deep-content-block ul {
            list-style: disc;
            padding-left: 20px;
            margin-bottom: 16px;
        }

        .deep-content-block ul li {
            font-size: 1rem;
            line-height: 1.8;
            color: #374151;
            margin-bottom: 8px;
        }

        .deep-content-dark {
            background: var(--darker);
            color: #E5E7EB;
            border: none;
            box-shadow: var(--shadow-lg);
        }

        .deep-content-dark h3 {
            color: var(--white);
        }

        .deep-content-dark p,
        .deep-content-dark ul li {
            color: #D1D5DB;
        }

        /* Stats */
        .stats-row {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .stat-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 32px;
            text-align: center;
            flex: 1 1 200px;
            min-width: 180px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

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

        .stat-card .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 6px;
        }

        .stat-card .stat-label {
            font-size: 0.95rem;
            color: var(--gray);
            font-weight: 500;
        }

        .stat-card .stat-desc {
            font-size: 0.8rem;
            color: #9CA3AF;
            margin-top: 4px;
        }

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

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

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--dark);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: color var(--transition);
            gap: 12px;
        }

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            transition: transform 0.3s ease;
            font-size: 0.9rem;
            color: var(--gray);
        }

        .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;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 0.95rem;
            color: var(--gray);
            line-height: 1.75;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: var(--white);
            padding: 56px 0;
            text-align: center;
            border-radius: 0;
        }

        .cta-section h2 {
            color: var(--white);
            font-size: 2rem;
            margin-bottom: 12px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.9);
            font-size: 1.1rem;
            margin-bottom: 28px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-section .btn-primary-custom {
            background: var(--white);
            color: var(--primary);
            font-weight: 700;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
        }

        .cta-section .btn-primary-custom:hover {
            background: #FFF5F0;
            color: var(--primary-dark);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
        }

        /* Bottom sticky bar */
        .bottom-sticky-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 60px;
            background: var(--darker);
            color: var(--white);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            z-index: 1030;
            padding: 0 20px;
            box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.2);
        }

        .bottom-sticky-bar span {
            font-size: 0.95rem;
            font-weight: 500;
        }

        .bottom-sticky-bar .btn-sticky {
            display: inline-block;
            background: var(--primary);
            color: var(--white);
            border: none;
            padding: 8px 22px;
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .bottom-sticky-bar .btn-sticky:hover {
            background: var(--primary-light);
            color: var(--white);
        }

        /* Footer */
        .site-footer {
            background: var(--darker);
            color: #D1D5DB;
            padding: 48px 0 32px;
            margin-top: 0;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 32px;
        }

        .site-footer .footer-brand {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 8px;
        }

        .site-footer h4 {
            color: var(--white);
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .site-footer a {
            color: #9CA3AF;
            font-size: 0.9rem;
            transition: color var(--transition);
            line-height: 2;
        }

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

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: #9CA3AF;
        }

        .site-footer .footer-bottom a {
            color: #9CA3AF;
            font-size: 0.8rem;
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .nav-links-left,
            .nav-links-right {
                display: none;
            }
            .nav-logo {
                position: static;
                transform: none;
                margin: 0 auto;
            }
            .hamburger-toggle {
                display: block;
            }
            .main-nav {
                justify-content: space-between;
                padding: 0 16px;
            }
            .hero-inner {
                flex-direction: column;
                text-align: center;
                gap: 32px;
            }
            .hero-text-area .hero-subtitle {
                margin-left: auto;
                margin-right: auto;
            }
            .hero-cta-row {
                justify-content: center;
            }
            .hero-text-area h1 {
                font-size: 2.2rem;
            }
            .img-text-block,
            .img-text-block.reverse {
                flex-direction: column;
                gap: 24px;
            }
            .img-text-block .img-side {
                flex: 0 0 auto;
                width: 100%;
            }
            .site-footer .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .section-title {
                font-size: 1.6rem;
            }
            .deep-content-block {
                padding: 24px;
            }
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .hero-section {
                padding: 40px 0 36px;
            }
            .hero-text-area h1 {
                font-size: 1.7rem;
            }
            .hero-text-area .hero-subtitle {
                font-size: 1rem;
            }
            .hero-avatar-wrapper {
                width: 100px;
                height: 100px;
            }
            .hero-avatar-wrapper .avatar-icon {
                font-size: 2.5rem;
            }
            .section-padding {
                padding: 40px 0;
            }
            .section-padding-sm {
                padding: 32px 0;
            }
            .stats-row {
                gap: 12px;
            }
            .stat-card {
                flex: 1 1 140px;
                min-width: 140px;
                padding: 20px 16px;
            }
            .stat-card .stat-number {
                font-size: 2rem;
            }
            .bottom-sticky-bar {
                height: 50px;
                gap: 10px;
                padding: 0 12px;
            }
            .bottom-sticky-bar span {
                font-size: 0.8rem;
            }
            .bottom-sticky-bar .btn-sticky {
                padding: 6px 16px;
                font-size: 0.8rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .faq-question {
                font-size: 0.95rem;
                padding: 14px 16px;
            }
            .faq-answer-inner {
                padding: 0 16px 16px;
            }
            .container-custom {
                padding: 0 16px;
            }
            .card-custom {
                padding: 20px 16px;
            }
            .deep-content-block {
                padding: 20px;
            }
        }

        @media (max-width: 520px) {
            .hero-badge-row {
                gap: 6px;
            }
            .hero-badge {
                font-size: 0.7rem;
                padding: 4px 10px;
            }
            .hero-cta-row {
                flex-direction: column;
                align-items: center;
            }
            .btn-primary-custom,
            .btn-outline-custom {
                width: 100%;
                text-align: center;
            }
            .stat-card {
                flex: 1 1 100%;
                min-width: 100%;
            }
            .bottom-sticky-bar {
                flex-direction: column;
                height: auto;
                padding: 10px 12px;
                gap: 6px;
                text-align: center;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #FF6B35;
            --primary-dark: #E55A2B;
            --primary-light: #FF8A5C;
            --accent: #FFC107;
            --dark: #1A1A1A;
            --darker: #111827;
            --gray: #6B7280;
            --light-gray: #F3F4F6;
            --lighter: #F8F9FA;
            --border: #E5E7EB;
            --white: #FFFFFF;
            --radius: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
            --transition: 0.2s ease;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Source Han Sans CN', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
        }

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

        body {
            font-family: var(--font-sans);
            font-weight: 400;
            line-height: 1.7;
            color: var(--dark);
            background: var(--white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            padding-bottom: 60px;
        }

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

        a:hover {
            color: var(--primary);
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-lg);
        }

        .main-nav {
            display: flex;
            align-items: center;
            justify-content: center;
            height: 68px;
            position: relative;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .nav-logo {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--dark);
            white-space: nowrap;
            z-index: 2;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: var(--white);
            border-radius: 50%;
            font-size: 1.1rem;
            font-weight: 700;
        }

        .nav-logo:hover {
            color: var(--primary);
        }

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

        .nav-links-left {
            margin-right: auto;
            padding-right: 140px;
        }

        .nav-links-right {
            margin-left: auto;
            padding-left: 140px;
        }

        .nav-links-left a,
        .nav-links-right a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 0.95rem;
            font-weight: 500;
            color: #374151;
            border-radius: 6px;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition), background var(--transition);
        }

        .nav-links-left a::after,
        .nav-links-right a::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: transform var(--transition);
        }

        .nav-links-left a:hover,
        .nav-links-right a:hover {
            color: var(--primary);
            background: rgba(255, 107, 53, 0.05);
        }

        .nav-links-left a:hover::after,
        .nav-links-right a:hover::after {
            transform: translateX(-50%) scaleX(1);
        }

        .nav-links-left a.active,
        .nav-links-right a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-links-left a.active::after,
        .nav-links-right a.active::after {
            transform: translateX(-50%) scaleX(1);
        }

        .nav-home-link {
            font-weight: 600 !important;
        }

        .hamburger-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark);
            padding: 8px;
            z-index: 3;
            position: absolute;
            right: 16px;
            top: 50%;
            transform: translateY(-50%);
        }

        .mobile-menu-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.6);
            z-index: 1040;
            display: none;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .mobile-menu-overlay.active {
            display: block;
            opacity: 1;
        }

        .mobile-menu-panel {
            position: fixed;
            top: 0;
            right: -100%;
            width: 280px;
            height: 100%;
            background: var(--white);
            z-index: 1055;
            padding: 24px 20px;
            transition: right 0.3s ease;
            box-shadow: -4px 0 24px rgba(0, 0, 0, 0.15);
            overflow-y: auto;
        }

        .mobile-menu-panel.active {
            right: 0;
        }

        .mobile-menu-panel a {
            display: block;
            padding: 12px 16px;
            font-size: 1rem;
            font-weight: 500;
            color: var(--dark);
            border-radius: 6px;
            margin-bottom: 4px;
            transition: all var(--transition);
        }

        .mobile-menu-panel a:hover,
        .mobile-menu-panel a.active {
            background: rgba(255, 107, 53, 0.08);
            color: var(--primary);
        }

        .mobile-menu-close {
            display: flex;
            justify-content: flex-end;
            margin-bottom: 16px;
            font-size: 1.4rem;
            cursor: pointer;
            color: var(--gray);
            background: none;
            border: none;
            padding: 8px;
        }

        /* Buttons */
        .btn-primary-custom {
            display: inline-block;
            background: var(--primary);
            color: var(--white);
            font-weight: 600;
            font-size: 1rem;
            padding: 0.75rem 2rem;
            border-radius: 6px;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            white-space: nowrap;
        }

        .btn-primary-custom:hover {
            background: var(--primary-dark);
            color: var(--white);
            transform: translateY(-1px);
            box-shadow: var(--shadow-lg);
        }

        .btn-outline-custom {
            display: inline-block;
            background: transparent;
            color: var(--white);
            font-weight: 600;
            font-size: 1rem;
            padding: 0.7rem 1.9rem;
            border-radius: 6px;
            border: 2px solid var(--white);
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            white-space: nowrap;
        }

        .btn-outline-custom:hover {
            background: var(--white);
            color: var(--primary);
        }

        .btn-outline-primary {
            display: inline-block;
            background: transparent;
            color: var(--primary);
            font-weight: 600;
            font-size: 1rem;
            padding: 0.7rem 1.9rem;
            border-radius: 6px;
            border: 2px solid var(--primary);
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            white-space: nowrap;
        }

        .btn-outline-primary:hover {
            background: var(--primary);
            color: var(--white);
        }

        /* Section spacing */
        .section-py {
            padding: 4rem 0;
        }

        .section-py-lg {
            padding: 5rem 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 3rem;
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 0.75rem;
        }

        .section-header .section-subtitle {
            font-size: 1.05rem;
            color: var(--gray);
            max-width: 650px;
            margin: 0 auto;
        }

        /* Hero */
        .hero-expert {
            position: relative;
            min-height: 75vh;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            overflow: hidden;
        }

        .hero-expert::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(17, 24, 39, 0.88) 0%, rgba(26, 26, 26, 0.82) 50%, rgba(17, 24, 39, 0.9) 100%);
            z-index: 1;
        }

        .hero-expert .hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
        }

        .hero-tags-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 1.5rem;
            justify-content: center;
        }

        .hero-tag {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.25);
            transition: all var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }

        .hero-tag:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }

        .hero-expert h1 {
            font-size: 3.2rem;
            font-weight: 700;
            color: #fff;
            text-align: center;
            margin-bottom: 1rem;
            line-height: 1.25;
        }

        .hero-expert .hero-subtitle {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.85);
            text-align: center;
            max-width: 700px;
            margin: 0 auto 2rem;
            line-height: 1.6;
        }

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

        /* Cards */
        .card-custom {
            background: var(--white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            overflow: hidden;
            height: 100%;
        }

        .card-custom:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        .card-custom .card-body {
            padding: 1.5rem;
        }

        .card-custom .card-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 0.6rem;
        }

        .card-custom .card-text {
            font-size: 0.95rem;
            color: var(--gray);
            line-height: 1.65;
        }

        .card-icon-circle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(255, 107, 53, 0.1);
            color: var(--primary);
            font-size: 1.4rem;
            margin-bottom: 1rem;
            flex-shrink: 0;
        }

        /* Expert cards */
        .expert-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 1.8rem;
            text-align: center;
            transition: all var(--transition);
            height: 100%;
        }

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

        .expert-avatar {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            object-fit: cover;
            margin: 0 auto 1rem;
            border: 3px solid var(--primary-light);
        }

        .expert-card .expert-name {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 0.3rem;
        }

        .expert-card .expert-role {
            font-size: 0.85rem;
            color: var(--primary);
            font-weight: 500;
            margin-bottom: 0.7rem;
        }

        .expert-card .expert-bio {
            font-size: 0.9rem;
            color: var(--gray);
            line-height: 1.55;
        }

        /* Process steps */
        .step-item {
            display: flex;
            gap: 1.5rem;
            align-items: flex-start;
            padding: 1.5rem;
            background: var(--white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: all var(--transition);
            height: 100%;
        }

        .step-item:hover {
            box-shadow: var(--shadow);
            border-color: var(--primary-light);
        }

        .step-number {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .step-content h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 0.4rem;
        }

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

        /* FAQ */
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: var(--primary-light);
        }

        .faq-question {
            padding: 1.1rem 1.5rem;
            background: var(--white);
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            user-select: none;
            transition: background var(--transition);
            color: var(--dark);
        }

        .faq-question:hover {
            background: var(--lighter);
        }

        .faq-question .faq-icon {
            transition: transform var(--transition);
            color: var(--primary);
            font-size: 0.9rem;
            flex-shrink: 0;
            margin-left: 12px;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 1.5rem;
            background: var(--lighter);
            font-size: 0.95rem;
            color: var(--gray);
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 1rem 1.5rem;
        }

        /* CTA Section */
        .cta-section {
            background: var(--darker);
            color: #fff;
            text-align: center;
            padding: 4rem 0;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
        }

        .cta-section p {
            font-size: 1.05rem;
            opacity: 0.85;
            margin-bottom: 1.8rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        /* Bottom sticky bar */
        .bottom-sticky-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 60px;
            background: var(--darker);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            z-index: 1030;
            padding: 0 20px;
            font-size: 0.95rem;
            font-weight: 500;
        }

        .bottom-sticky-bar .btn-sticky {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            padding: 8px 22px;
            border-radius: 6px;
            font-size: 0.9rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .bottom-sticky-bar .btn-sticky:hover {
            background: var(--primary-dark);
        }

        /* Footer */
        .site-footer {
            background: var(--darker);
            color: #ccc;
            padding: 3rem 0 2rem;
            font-size: 0.9rem;
            line-height: 1.8;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .site-footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.5rem;
        }

        .site-footer h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 0.8rem;
        }

        .site-footer a {
            color: #aaa;
            font-size: 0.85rem;
            transition: color var(--transition);
        }

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

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.8rem;
            color: #888;
        }

        .site-footer .footer-bottom a {
            color: #aaa;
            font-size: 0.8rem;
        }

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

        /* Breadcrumb */
        .breadcrumb-wrapper {
            background: var(--lighter);
            padding: 0.8rem 0;
            border-bottom: 1px solid var(--border);
            font-size: 0.9rem;
        }

        .breadcrumb-wrapper a {
            color: var(--gray);
        }

        .breadcrumb-wrapper a:hover {
            color: var(--primary);
        }

        .breadcrumb-wrapper .current {
            color: var(--primary);
            font-weight: 500;
        }

        /* Stats */
        .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--gray);
            margin-top: 0.3rem;
        }

        /* Highlight badge */
        .badge-accent {
            display: inline-block;
            padding: 4px 12px;
            background: var(--accent);
            color: var(--dark);
            font-weight: 600;
            font-size: 0.8rem;
            border-radius: 20px;
            letter-spacing: 0.3px;
        }

        /* Responsive */
        @media (max-width: 992px) {
            .nav-links-left,
            .nav-links-right {
                display: none;
            }
            .nav-logo {
                position: static;
                transform: none;
                margin: 0 auto;
            }
            .hamburger-toggle {
                display: block;
            }
            .main-nav {
                justify-content: space-between;
                padding: 0 16px;
            }
            .hero-expert h1 {
                font-size: 2.2rem;
            }
            .hero-expert .hero-subtitle {
                font-size: 1rem;
            }
            .hero-expert {
                min-height: 60vh;
            }
            .site-footer .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }
            .section-py {
                padding: 3rem 0;
            }
            .section-py-lg {
                padding: 3.5rem 0;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .bottom-sticky-bar {
                height: 50px;
                font-size: 0.8rem;
                gap: 10px;
            }
            .bottom-sticky-bar .btn-sticky {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .step-item {
                flex-direction: column;
                gap: 0.8rem;
            }
        }

        @media (max-width: 576px) {
            .hero-expert h1 {
                font-size: 1.8rem;
            }
            .hero-expert {
                min-height: 50vh;
            }
            .hero-tags-bar {
                gap: 6px;
            }
            .hero-tag {
                padding: 4px 10px;
                font-size: 0.75rem;
            }
            .hero-cta-group {
                flex-direction: column;
                align-items: center;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .card-custom .card-body {
                padding: 1.2rem;
            }
            .expert-card {
                padding: 1.2rem;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .bottom-sticky-bar {
                height: 44px;
                font-size: 0.75rem;
                gap: 8px;
                padding: 0 10px;
            }
            .bottom-sticky-bar .btn-sticky {
                padding: 5px 10px;
                font-size: 0.75rem;
            }
            body {
                padding-bottom: 44px;
            }
            .container-custom {
                padding: 0 16px;
            }
        }

/* roulang page: category6 */
:root {
            --primary: #FF6B35;
            --primary-dark: #E55A2B;
            --primary-light: #FF8A5C;
            --accent: #FFC107;
            --dark: #1A1A1A;
            --darker: #111827;
            --gray: #6B7280;
            --light-gray: #F3F4F6;
            --lighter: #F8F9FA;
            --border: #E5E7EB;
            --white: #FFFFFF;
            --radius: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
            --transition: 0.2s ease;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Source Han Sans CN', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
        }

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

        body {
            font-family: var(--font-sans);
            font-weight: 400;
            line-height: 1.7;
            color: var(--dark);
            background: var(--white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            padding-bottom: 60px;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-lg);
        }
        .main-nav {
            display: flex;
            align-items: center;
            justify-content: center;
            height: 68px;
            position: relative;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .nav-logo {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--dark);
            white-space: nowrap;
            z-index: 2;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: var(--white);
            border-radius: 50%;
            font-size: 1.1rem;
            font-weight: 700;
        }
        .nav-logo:hover {
            color: var(--primary);
        }
        .nav-links-left,
        .nav-links-right {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links-left {
            margin-right: auto;
            padding-right: 140px;
        }
        .nav-links-right {
            margin-left: auto;
            padding-left: 140px;
        }
        .nav-links-left a,
        .nav-links-right a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 0.95rem;
            font-weight: 500;
            color: #374151;
            border-radius: 6px;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition), background var(--transition);
        }
        .nav-links-left a::after,
        .nav-links-right a::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: transform var(--transition);
        }
        .nav-links-left a:hover,
        .nav-links-right a:hover {
            color: var(--primary);
            background: rgba(255, 107, 53, 0.05);
        }
        .nav-links-left a:hover::after,
        .nav-links-right a:hover::after {
            transform: translateX(-50%) scaleX(1);
        }
        .nav-links-left a.active,
        .nav-links-right a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-links-left a.active::after,
        .nav-links-right a.active::after {
            transform: translateX(-50%) scaleX(1);
        }
        .nav-home-link {
            font-weight: 600 !important;
        }
        .hamburger-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark);
            padding: 8px;
            z-index: 3;
            position: absolute;
            right: 16px;
            top: 50%;
            transform: translateY(-50%);
        }

        /* Mobile Menu Overlay */
        .mobile-menu-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.6);
            z-index: 1040;
            display: none;
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .mobile-menu-overlay.active {
            display: block;
            opacity: 1;
        }
        .mobile-menu-panel {
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            height: 100%;
            background: var(--white);
            z-index: 1045;
            padding: 80px 24px 40px;
            transition: right 0.35s ease;
            box-shadow: -4px 0 24px rgba(0, 0, 0, 0.15);
            overflow-y: auto;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-menu-panel.active {
            right: 0;
        }
        .mobile-menu-panel a {
            display: block;
            padding: 12px 16px;
            font-size: 1.05rem;
            font-weight: 500;
            color: var(--dark);
            border-radius: 8px;
            transition: all var(--transition);
        }
        .mobile-menu-panel a:hover,
        .mobile-menu-panel a.active {
            color: var(--primary);
            background: rgba(255, 107, 53, 0.06);
            font-weight: 600;
        }
        .mobile-menu-close {
            position: absolute;
            top: 16px;
            right: 16px;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark);
            padding: 8px;
            z-index: 2;
        }

        /* Hero - 拼团转化风格 */
        .hero-community {
            position: relative;
            min-height: 80vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            overflow: hidden;
        }
        .hero-community::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(17, 24, 39, 0.82) 0%, rgba(26, 26, 26, 0.7) 50%, rgba(255, 107, 53, 0.35) 100%);
            z-index: 1;
        }
        .hero-community .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            color: var(--white);
            max-width: 750px;
            padding: 0 24px;
        }
        .hero-community .hero-badge {
            display: inline-block;
            background: var(--accent);
            color: #1A1A1A;
            font-weight: 700;
            font-size: 0.85rem;
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
            animation: pulse-badge 2s ease-in-out infinite;
        }
        @keyframes pulse-badge {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(255, 193, 7, 0.5);
            }
            50% {
                box-shadow: 0 0 0 14px rgba(255, 193, 7, 0);
            }
        }
        .hero-community h1 {
            font-size: 3.5rem;
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: 1px;
        }
        .hero-community .hero-subtitle {
            font-size: 1.2rem;
            line-height: 1.7;
            opacity: 0.9;
            margin-bottom: 12px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero-community .group-progress {
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(10px);
            border-radius: var(--radius-lg);
            padding: 20px 28px;
            margin: 24px auto 28px;
            max-width: 520px;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .hero-community .group-progress .progress-info {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 10px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.85);
        }
        .hero-community .group-progress .progress-info strong {
            color: var(--accent);
            font-size: 1.1rem;
        }
        .hero-community .progress-bar-custom {
            height: 8px;
            background: rgba(255, 255, 255, 0.25);
            border-radius: 10px;
            overflow: hidden;
        }
        .hero-community .progress-bar-custom .fill {
            height: 100%;
            background: var(--accent);
            border-radius: 10px;
            width: 78%;
            transition: width 1.5s ease;
        }
        .hero-community .hero-btns {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .btn-primary-custom {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            padding: 0.8rem 2rem;
            border-radius: 6px;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.35);
        }
        .btn-primary-custom:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 22px rgba(255, 107, 53, 0.5);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-outline-custom {
            display: inline-block;
            background: transparent;
            color: #fff;
            font-weight: 700;
            padding: 0.8rem 2rem;
            border-radius: 6px;
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.6);
            cursor: pointer;
            transition: all var(--transition);
        }
        .btn-outline-custom:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        /* Section Common */
        .section-padding {
            padding: 5rem 0;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 0.75rem;
            letter-spacing: 0.5px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--gray);
            margin-bottom: 2.5rem;
            max-width: 650px;
            line-height: 1.7;
        }
        .section-header {
            text-align: center;
            margin-bottom: 3rem;
        }
        .section-header .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* Cards */
        .card-custom {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            padding: 1.8rem;
            transition: all var(--transition);
            height: 100%;
        }
        .card-custom:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: transparent;
        }
        .card-custom .card-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            background: rgba(255, 107, 53, 0.1);
            color: var(--primary);
            border-radius: 12px;
            font-size: 1.4rem;
            margin-bottom: 1rem;
        }
        .card-custom h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.6rem;
            color: var(--dark);
        }
        .card-custom p {
            font-size: 0.95rem;
            color: var(--gray);
            line-height: 1.7;
            margin: 0;
        }

        /* Scene alternating */
        .scene-row {
            display: flex;
            align-items: center;
            gap: 3rem;
            margin-bottom: 3rem;
            flex-wrap: wrap;
        }
        .scene-row.reverse {
            flex-direction: row-reverse;
        }
        .scene-row .scene-img {
            flex: 1 1 400px;
            min-width: 280px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .scene-row .scene-img img {
            width: 100%;
            height: auto;
            object-fit: cover;
            border-radius: var(--radius-lg);
            transition: transform 0.4s ease;
        }
        .scene-row .scene-img:hover img {
            transform: scale(1.04);
        }
        .scene-row .scene-text {
            flex: 1 1 320px;
        }
        .scene-row .scene-text h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
            color: var(--dark);
        }
        .scene-row .scene-text p {
            font-size: 1rem;
            color: var(--gray);
            line-height: 1.8;
            margin-bottom: 1rem;
        }
        .scene-row .scene-text ul {
            list-style: none;
            padding: 0;
        }
        .scene-row .scene-text ul li {
            padding: 4px 0 4px 24px;
            position: relative;
            font-size: 0.95rem;
            color: #4B5563;
        }
        .scene-row .scene-text ul li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: 700;
        }

        /* Hot topics */
        .topic-list {
            list-style: none;
            padding: 0;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 16px;
        }
        .topic-list li {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 16px 20px;
            display: flex;
            align-items: center;
            gap: 14px;
            transition: all var(--transition);
            cursor: pointer;
        }
        .topic-list li:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow);
            transform: translateX(4px);
        }
        .topic-list .topic-rank {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            min-width: 36px;
            text-align: center;
        }
        .topic-list .topic-info h4 {
            font-size: 1rem;
            font-weight: 600;
            margin: 0 0 4px;
            color: var(--dark);
        }
        .topic-list .topic-info span {
            font-size: 0.8rem;
            color: var(--gray);
        }
        .topic-list .topic-badge {
            margin-left: auto;
            background: var(--accent);
            color: #1A1A1A;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 12px;
            white-space: nowrap;
        }

        /* Stats */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }
        .stat-item {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 2rem 1rem;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .stat-item:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .stat-item .stat-number {
            font-size: 2.6rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 8px;
        }
        .stat-item .stat-label {
            font-size: 0.9rem;
            color: var(--gray);
            font-weight: 500;
        }

        /* Deep content */
        .deep-content-block {
            background: var(--lighter);
            border-radius: var(--radius-lg);
            padding: 3rem 2.5rem;
            margin-bottom: 2rem;
            border: 1px solid var(--border);
        }
        .deep-content-block h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 1.2rem;
            color: var(--dark);
        }
        .deep-content-block p {
            font-size: 1rem;
            color: #4B5563;
            line-height: 1.9;
            margin-bottom: 1rem;
        }
        .deep-content-block ul {
            padding-left: 1.5rem;
            color: #4B5563;
            line-height: 2;
        }

        /* FAQ */
        .faq-list .accordion-item {
            border: 1px solid var(--border);
            border-radius: var(--radius) !important;
            margin-bottom: 10px;
            overflow: hidden;
        }
        .faq-list .accordion-button {
            font-weight: 600;
            font-size: 1rem;
            color: var(--dark);
            background: var(--white);
            box-shadow: none;
            padding: 1rem 1.5rem;
            border-radius: var(--radius) !important;
        }
        .faq-list .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: rgba(255, 107, 53, 0.03);
            box-shadow: none;
        }
        .faq-list .accordion-button:focus {
            box-shadow: none;
            border-color: var(--primary);
            outline: 2px solid rgba(255, 107, 53, 0.3);
            outline-offset: 2px;
        }
        .faq-list .accordion-body {
            font-size: 0.95rem;
            color: #4B5563;
            line-height: 1.8;
            padding: 1rem 1.5rem 1.5rem;
        }

        /* CTA */
        .cta-section {
            background: var(--darker);
            color: var(--white);
            text-align: center;
            padding: 4rem 2rem;
            border-radius: var(--radius-lg);
            margin: 2rem 0;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
        }
        .cta-section p {
            font-size: 1.05rem;
            opacity: 0.85;
            margin-bottom: 1.5rem;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
        }

        /* Bottom fixed bar */
        .bottom-fixed-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 60px;
            background: var(--darker);
            color: var(--white);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            z-index: 1030;
            box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.2);
            padding: 0 20px;
        }
        .bottom-fixed-bar span {
            font-size: 0.95rem;
            font-weight: 500;
            white-space: nowrap;
        }
        .bottom-fixed-bar .btn-primary-custom {
            padding: 0.5rem 1.5rem;
            font-size: 0.9rem;
            white-space: nowrap;
        }

        /* Footer */
        .site-footer {
            background: var(--darker);
            color: #D1D5DB;
            padding: 3rem 0 2rem;
            margin-top: 2rem;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .site-footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 0.5rem;
        }
        .site-footer h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--white);
            margin-bottom: 0.8rem;
        }
        .site-footer a {
            color: #9CA3AF;
            font-size: 0.9rem;
            display: inline-block;
            margin-bottom: 4px;
            transition: color var(--transition);
        }
        .site-footer a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.8rem;
            color: #9CA3AF;
            line-height: 2;
        }
        .footer-bottom a {
            color: #9CA3AF;
            font-size: 0.8rem;
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }

        /* Responsive */
        @media (max-width: 1199px) {
            .nav-links-left {
                padding-right: 100px;
            }
            .nav-links-right {
                padding-left: 100px;
            }
            .nav-links-left a,
            .nav-links-right a {
                padding: 8px 10px;
                font-size: 0.85rem;
            }
            .nav-logo {
                font-size: 1.3rem;
            }
        }
        @media (max-width: 991px) {
            .nav-links-left,
            .nav-links-right {
                display: none;
            }
            .nav-logo {
                position: static;
                transform: none;
                margin: 0 auto;
            }
            .hamburger-toggle {
                display: block;
            }
            .main-nav {
                justify-content: space-between;
                padding: 0 16px;
            }
            .hero-community h1 {
                font-size: 2.5rem;
            }
            .hero-community .hero-subtitle {
                font-size: 1rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .site-footer .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .topic-list {
                grid-template-columns: 1fr;
            }
            .deep-content-block {
                padding: 2rem 1.5rem;
            }
            .section-padding {
                padding: 3rem 0;
            }
        }
        @media (max-width: 767px) {
            .hero-community {
                min-height: 65vh;
            }
            .hero-community h1 {
                font-size: 2rem;
            }
            .hero-community .hero-subtitle {
                font-size: 0.9rem;
            }
            .hero-community .group-progress {
                padding: 14px 16px;
            }
            .hero-community .hero-btns {
                flex-direction: column;
                gap: 10px;
            }
            .btn-primary-custom,
            .btn-outline-custom {
                width: 100%;
                text-align: center;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-item {
                padding: 1.2rem 0.8rem;
            }
            .stat-item .stat-number {
                font-size: 2rem;
            }
            .scene-row {
                flex-direction: column !important;
                gap: 1.5rem;
            }
            .scene-row .scene-img {
                flex: 1 1 auto;
                min-width: 100%;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .bottom-fixed-bar {
                height: 50px;
                gap: 10px;
                padding: 0 12px;
            }
            .bottom-fixed-bar span {
                font-size: 0.8rem;
            }
            .bottom-fixed-bar .btn-primary-custom {
                padding: 0.4rem 1rem;
                font-size: 0.8rem;
            }
            .cta-section {
                padding: 2.5rem 1.2rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .topic-list li {
                flex-wrap: wrap;
            }
            .topic-list .topic-badge {
                margin-left: 0;
                margin-top: 6px;
            }
            .container-custom {
                padding: 0 16px;
            }
        }
        @media (max-width: 520px) {
            .hero-community h1 {
                font-size: 1.7rem;
            }
            .hero-community {
                min-height: 60vh;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .stat-item .stat-number {
                font-size: 1.6rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .deep-content-block {
                padding: 1.5rem 1rem;
            }
            .section-padding {
                padding: 2.5rem 0;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #FF6B35;
            --primary-dark: #E55A2B;
            --primary-light: #FF8A5C;
            --accent: #FFC107;
            --dark: #1A1A1A;
            --darker: #111827;
            --gray: #6B7280;
            --light-gray: #F3F4F6;
            --lighter: #F8F9FA;
            --border: #E5E7EB;
            --white: #FFFFFF;
            --radius: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
            --transition: 0.2s ease;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Source Han Sans CN', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
        }

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

        body {
            font-family: var(--font-sans);
            font-weight: 400;
            line-height: 1.7;
            color: var(--dark);
            background: var(--white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            padding-bottom: 60px;
        }

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

        a:hover {
            color: var(--primary);
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-lg);
        }

        .main-nav {
            display: flex;
            align-items: center;
            justify-content: center;
            height: 68px;
            position: relative;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .nav-logo {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--dark);
            white-space: nowrap;
            z-index: 2;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: var(--white);
            border-radius: 50%;
            font-size: 1.1rem;
            font-weight: 700;
        }

        .nav-logo:hover {
            color: var(--primary);
        }

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

        .nav-links-left {
            margin-right: auto;
            padding-right: 140px;
        }

        .nav-links-right {
            margin-left: auto;
            padding-left: 140px;
        }

        .nav-links-left a,
        .nav-links-right a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 0.95rem;
            font-weight: 500;
            color: #374151;
            border-radius: 6px;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition), background var(--transition);
        }

        .nav-links-left a::after,
        .nav-links-right a::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: transform var(--transition);
        }

        .nav-links-left a:hover,
        .nav-links-right a:hover {
            color: var(--primary);
            background: rgba(255, 107, 53, 0.05);
        }

        .nav-links-left a:hover::after,
        .nav-links-right a:hover::after {
            transform: translateX(-50%) scaleX(1);
        }

        .nav-links-left a.active,
        .nav-links-right a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-links-left a.active::after,
        .nav-links-right a.active::after {
            transform: translateX(-50%) scaleX(1);
        }

        .nav-home-link {
            font-weight: 600 !important;
        }

        .hamburger-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark);
            padding: 8px;
            z-index: 3;
            position: absolute;
            right: 16px;
            top: 50%;
            transform: translateY(-50%);
        }

        @media (max-width: 1024px) {
            .nav-links-left,
            .nav-links-right {
                display: none;
            }
            .nav-logo {
                position: static;
                transform: none;
                margin: 0 auto;
            }
            .hamburger-toggle {
                display: block;
            }
            .main-nav {
                justify-content: space-between;
                padding: 0 16px;
            }
        }

        .mobile-menu-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.6);
            z-index: 1040;
            display: none;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .mobile-menu-overlay.active {
            display: block;
            opacity: 1;
        }

        .mobile-menu-panel {
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            height: 100%;
            background: var(--white);
            z-index: 1055;
            padding: 80px 24px 24px;
            transition: right 0.3s ease;
            overflow-y: auto;
            box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
        }

        .mobile-menu-panel.active {
            right: 0;
        }

        .mobile-menu-panel a {
            display: block;
            padding: 14px 16px;
            font-size: 1.05rem;
            font-weight: 500;
            color: var(--dark);
            border-radius: 8px;
            margin-bottom: 4px;
            transition: all var(--transition);
        }

        .mobile-menu-panel a:hover,
        .mobile-menu-panel a.active {
            background: rgba(255, 107, 53, 0.08);
            color: var(--primary);
        }

        .mobile-menu-close {
            position: absolute;
            top: 16px;
            right: 16px;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark);
            padding: 8px;
        }

        .section-py {
            padding: 4rem 0;
        }

        .section-py-lg {
            padding: 5rem 0;
        }

        .section-py-sm {
            padding: 2.5rem 0;
        }

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

        .bg-lighter-alt {
            background: var(--lighter);
        }

        .bg-dark-alt {
            background: var(--darker);
            color: var(--white);
        }

        .btn-primary-custom {
            display: inline-block;
            background: var(--primary);
            color: var(--white);
            border: none;
            padding: 0.75rem 2rem;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 6px;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            white-space: nowrap;
        }

        .btn-primary-custom:hover {
            background: var(--primary-dark);
            color: var(--white);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(255, 107, 53, 0.3);
        }

        .btn-outline-custom {
            display: inline-block;
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
            padding: 0.7rem 1.9rem;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 6px;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            white-space: nowrap;
        }

        .btn-outline-custom:hover {
            background: rgba(255, 107, 53, 0.06);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        .btn-outline-white {
            display: inline-block;
            background: transparent;
            color: var(--white);
            border: 2px solid var(--white);
            padding: 0.7rem 1.9rem;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 6px;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            white-space: nowrap;
        }

        .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.1);
            color: var(--white);
        }

        .card-custom {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            overflow: hidden;
        }

        .card-custom:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: #d1d5db;
        }

        .card-custom .card-body {
            padding: 1.5rem;
        }

        .tag-badge {
            display: inline-block;
            background: var(--accent);
            color: var(--dark);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            letter-spacing: 0.3px;
        }

        .tag-badge-sm {
            display: inline-block;
            background: rgba(255, 107, 53, 0.1);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 16px;
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--gray);
            padding: 1rem 0;
            flex-wrap: wrap;
        }

        .breadcrumb-nav a {
            color: var(--gray);
            transition: color var(--transition);
        }

        .breadcrumb-nav a:hover {
            color: var(--primary);
        }

        .breadcrumb-nav .separator {
            color: #cbd5e1;
        }

        .breadcrumb-nav .current {
            color: var(--dark);
            font-weight: 600;
        }

        .icon-matrix {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 16px;
            max-width: 700px;
            margin: 0 auto;
        }

        .icon-matrix .icon-cell {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 100%;
            aspect-ratio: 1;
            background: var(--white);
            border-radius: var(--radius);
            font-size: 1.8rem;
            color: var(--primary);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid var(--border);
        }

        .icon-matrix .icon-cell:hover {
            transform: scale(1.08);
            box-shadow: var(--shadow);
            color: var(--primary-dark);
            border-color: var(--primary-light);
        }

        @media (max-width: 768px) {
            .icon-matrix {
                grid-template-columns: repeat(4, 1fr);
                gap: 10px;
                max-width: 400px;
            }
            .icon-matrix .icon-cell {
                font-size: 1.4rem;
            }
        }

        @media (max-width: 480px) {
            .icon-matrix {
                grid-template-columns: repeat(3, 1fr);
                gap: 8px;
            }
            .icon-matrix .icon-cell {
                font-size: 1.2rem;
            }
        }

        .status-bar-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        .status-bar-item {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: 30px;
            padding: 8px 18px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--dark);
            box-shadow: var(--shadow-sm);
            white-space: nowrap;
        }

        .status-bar-item .status-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #22c55e;
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.4);
            }
            50% {
                box-shadow: 0 0 0 10px rgba(34, 197, 94, 0);
            }
        }

        .replay-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }

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

        .replay-card .replay-thumb {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #e5e7eb;
        }

        .replay-card .replay-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .replay-card:hover .replay-thumb img {
            transform: scale(1.05);
        }

        .replay-card .play-overlay {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 56px;
            height: 56px;
            background: rgba(255, 107, 53, 0.9);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 1.3rem;
            transition: all var(--transition);
            pointer-events: none;
        }

        .replay-card:hover .play-overlay {
            background: var(--primary);
            width: 62px;
            height: 62px;
        }

        .replay-card .duration-badge {
            position: absolute;
            bottom: 8px;
            right: 8px;
            background: rgba(0, 0, 0, 0.75);
            color: #fff;
            font-size: 0.75rem;
            padding: 3px 8px;
            border-radius: 4px;
            font-weight: 500;
        }

        .replay-card .replay-info {
            padding: 1rem 1.25rem;
        }

        .faq-accordion .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 10px;
            overflow: hidden;
            background: var(--white);
            transition: all var(--transition);
        }

        .faq-accordion .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 1rem 1.5rem;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: all var(--transition);
        }

        .faq-accordion .faq-question:hover {
            color: var(--primary);
            background: rgba(255, 107, 53, 0.03);
        }

        .faq-accordion .faq-question .faq-icon {
            transition: transform 0.3s ease;
            font-size: 0.85rem;
            color: var(--gray);
            flex-shrink: 0;
        }

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

        .faq-accordion .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 1.5rem;
            color: var(--gray);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .faq-accordion .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 1.5rem 1.25rem;
        }

        .bottom-sticky-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 60px;
            background: var(--darker);
            color: var(--white);
            z-index: 1030;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            padding: 0 20px;
            box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.2);
        }

        .bottom-sticky-bar .sticky-text {
            font-size: 0.95rem;
            font-weight: 500;
            white-space: nowrap;
        }

        .bottom-sticky-bar .btn-sticky {
            display: inline-block;
            background: var(--primary);
            color: var(--white);
            border: none;
            padding: 0.5rem 1.5rem;
            font-size: 0.9rem;
            font-weight: 600;
            border-radius: 6px;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .bottom-sticky-bar .btn-sticky:hover {
            background: var(--primary-dark);
            color: var(--white);
        }

        @media (max-width: 576px) {
            .bottom-sticky-bar {
                height: 50px;
                gap: 10px;
                padding: 0 12px;
            }
            .bottom-sticky-bar .sticky-text {
                font-size: 0.8rem;
            }
            .bottom-sticky-bar .btn-sticky {
                font-size: 0.8rem;
                padding: 0.4rem 1rem;
            }
            .section-py {
                padding: 2.5rem 0;
            }
            .section-py-lg {
                padding: 3rem 0;
            }
            .container-custom {
                padding: 0 16px;
            }
        }

        .site-footer {
            background: var(--darker);
            color: #d1d5db;
            padding: 3rem 0 2rem;
            font-size: 0.9rem;
            margin-bottom: 60px;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.3fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }

        @media (max-width: 768px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
        }

        @media (max-width: 480px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
        }

        .site-footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 0.5rem;
        }

        .site-footer h4 {
            color: var(--white);
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 0.8rem;
        }

        .site-footer a {
            color: #9ca3af;
            transition: color var(--transition);
            font-size: 0.85rem;
            line-height: 2;
        }

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

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.8rem;
            color: #9ca3af;
        }

        .site-footer .footer-bottom a {
            color: #b0b7c3;
        }

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

        .gradient-cta {
            background: linear-gradient(135deg, #FF6B35 0%, #E55A2B 40%, #d04920 100%);
            color: var(--white);
            border-radius: var(--radius-lg);
            padding: 3rem 2.5rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .gradient-cta::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 180px;
            height: 180px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }

        .gradient-cta::after {
            content: '';
            position: absolute;
            bottom: -30px;
            left: -30px;
            width: 120px;
            height: 120px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
            pointer-events: none;
        }

        .highlight-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }

        .highlight-number .unit {
            font-size: 1rem;
            font-weight: 500;
            color: var(--gray);
            margin-left: 2px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 0.5rem;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--gray);
            margin-bottom: 2rem;
            max-width: 650px;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 1.5rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
            }
            .highlight-number {
                font-size: 1.8rem;
            }
        }