/* roulang page: index */
:root {
            --primary: #1a3a5c;
            --primary-light: #2d5a88;
            --primary-lighter: #416d9d;
            --secondary: #3b82c4;
            --secondary-soft: #e8f0f8;
            --accent: #10b981;
            --accent-soft: #e6f7f0;
            --bg: #f8fafc;
            --bg-warm: #f4f7fa;
            --card-bg: #ffffff;
            --text: #1e293b;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --border: #e2e8f0;
            --border-light: #eef2f7;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 28px;
            --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 2px 8px rgba(26, 58, 92, 0.07);
            --shadow-md: 0 6px 20px rgba(26, 58, 92, 0.09);
            --shadow-lg: 0 12px 40px rgba(26, 58, 92, 0.12);
            --shadow-hover: 0 16px 48px rgba(26, 58, 92, 0.16);
            --spacing-xs: 0.5rem;
            --spacing-sm: 0.75rem;
            --spacing-md: 1rem;
            --spacing-lg: 1.5rem;
            --spacing-xl: 2rem;
            --spacing-2xl: 3rem;
            --spacing-3xl: 4rem;
            --spacing-4xl: 5rem;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.45s ease;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --header-height: 72px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            overflow-x: hidden;
        }

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

        a:hover {
            color: var(--secondary);
            text-decoration: none;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(59, 130, 196, 0.35);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

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

        .container {
            max-width: 1140px;
            padding-left: 20px;
            padding-right: 20px;
            margin-left: auto;
            margin-right: auto;
        }

        .section {
            padding-top: var(--spacing-3xl);
            padding-bottom: var(--spacing-3xl);
        }

        .section-sm {
            padding-top: var(--spacing-2xl);
            padding-bottom: var(--spacing-2xl);
        }

        .section-header {
            margin-bottom: var(--spacing-xl);
        }

        .section-header .tag {
            display: inline-block;
            background-color: var(--secondary-soft);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            padding: 0.35rem 1rem;
            border-radius: 50px;
            margin-bottom: var(--spacing-sm);
            text-transform: uppercase;
        }

        .section-header h2 {
            font-size: 1.85rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: var(--spacing-sm);
            letter-spacing: -0.01em;
        }

        .section-header p {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 760px;
            line-height: 1.8;
        }

        .section-header.center {
            text-align: center;
        }
        .section-header.center p {
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== NAVBAR ========== */
        .navbar-custom {
            background-color: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            padding: 0.6rem 0;
            transition: all var(--transition-base);
            min-height: var(--header-height);
        }

        .navbar-custom.scrolled {
            box-shadow: var(--shadow-sm);
        }

        .navbar-custom .navbar-brand {
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--primary);
            letter-spacing: 0.01em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }

        .navbar-custom .navbar-brand:hover {
            color: var(--primary-light);
        }

        .navbar-custom .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.95rem;
            flex-shrink: 0;
        }

        .navbar-custom .nav-link {
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.5rem 1.1rem;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            position: relative;
        }

        .navbar-custom .nav-link:hover {
            color: var(--primary);
            background-color: var(--secondary-soft);
        }

        .navbar-custom .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            background-color: var(--secondary-soft);
        }

        .navbar-custom .navbar-toggler {
            border: none;
            padding: 0.4rem;
            box-shadow: none;
            color: var(--primary);
        }

        .navbar-custom .navbar-toggler:focus {
            box-shadow: none;
        }

        .btn-nav-cta {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            padding: 0.55rem 1.4rem;
            border-radius: 50px;
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            transition: all var(--transition-base);
            white-space: nowrap;
            box-shadow: 0 4px 14px rgba(26, 58, 92, 0.25);
        }

        .btn-nav-cta:hover {
            background: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary) 100%);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 8px 22px rgba(26, 58, 92, 0.3);
        }

        /* ========== HERO ========== */
        .hero-video {
            position: relative;
            min-height: 620px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background-color: var(--primary);
        }

        .hero-video .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            filter: saturate(0.9);
            transform: scale(1.03);
            animation: heroZoom 18s ease-in-out infinite alternate;
        }

        @keyframes heroZoom {
            0% {
                transform: scale(1.03);
            }
            100% {
                transform: scale(1.12);
            }
        }

        .hero-video .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 25, 47, 0.87) 0%, rgba(18, 42, 72, 0.72) 45%, rgba(26, 58, 92, 0.55) 100%);
            z-index: 1;
        }

        .hero-video .hero-content {
            position: relative;
            z-index: 2;
            padding: var(--spacing-4xl) 0;
            max-width: 760px;
        }

        .hero-video .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: rgba(255, 255, 255, 0.16);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            font-size: 0.82rem;
            font-weight: 500;
            letter-spacing: 0.05em;
            padding: 0.4rem 1.1rem;
            border-radius: 50px;
            margin-bottom: var(--spacing-lg);
            backdrop-filter: blur(6px);
        }

        .hero-video .hero-tag i {
            color: var(--accent);
            font-size: 0.7rem;
        }

        .hero-video h1 {
            font-size: 2.85rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            margin-bottom: var(--spacing-lg);
            letter-spacing: -0.02em;
        }

        .hero-video .hero-desc {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.88);
            line-height: 1.9;
            margin-bottom: var(--spacing-xl);
            max-width: 650px;
        }

        .hero-video .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-md);
            align-items: center;
        }

        .btn-hero-primary {
            background: linear-gradient(135deg, var(--accent) 0%, #0b9d6e 100%);
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            padding: 0.75rem 2rem;
            border-radius: 50px;
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            transition: all var(--transition-base);
            box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
        }

        .btn-hero-primary:hover {
            background: linear-gradient(135deg, #0b9d6e 0%, #078a5b 100%);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(16, 185, 129, 0.5);
        }

        .btn-hero-secondary {
            background: rgba(255, 255, 255, 0.12);
            border: 1.5px solid rgba(255, 255, 255, 0.45);
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            padding: 0.75rem 1.8rem;
            border-radius: 50px;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            transition: all var(--transition-base);
            backdrop-filter: blur(6px);
        }

        .btn-hero-secondary:hover {
            background: rgba(255, 255, 255, 0.22);
            border-color: rgba(255, 255, 255, 0.7);
            color: #fff;
            transform: translateY(-2px);
        }

        .hero-video .hero-play {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.18);
            border: 2px solid rgba(255, 255, 255, 0.6);
            color: #fff;
            font-size: 1.35rem;
            cursor: pointer;
            transition: all var(--transition-base);
            backdrop-filter: blur(6px);
            flex-shrink: 0;
        }

        .hero-video .hero-play:hover {
            background: rgba(255, 255, 255, 0.32);
            transform: scale(1.08);
            border-color: #fff;
            color: #fff;
        }

        .hero-video .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-xl);
            margin-top: var(--spacing-2xl);
            padding-top: var(--spacing-lg);
            border-top: 1px solid rgba(255, 255, 255, 0.18);
        }

        .hero-video .hero-stat {
            color: #fff;
        }

        .hero-video .hero-stat .stat-num {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }

        .hero-video .hero-stat .stat-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.72);
            margin-top: 0.2rem;
        }

        /* ========== 卖点三连 ========== */
        .values-strip {
            background-color: var(--card-bg);
            border-bottom: 1px solid var(--border-light);
            padding: var(--spacing-xl) 0;
        }

        .values-strip .value-item {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            padding: var(--spacing-lg);
            border-radius: var(--radius-lg);
            background-color: var(--bg);
            transition: all var(--transition-base);
            height: 100%;
            border: 1px solid var(--border-light);
        }

        .values-strip .value-item:hover {
            background-color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--border);
        }

        .values-strip .value-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.25rem;
            flex-shrink: 0;
        }

        .values-strip .value-item h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 0.3rem;
        }

        .values-strip .value-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* ========== 片库轨道 ========== */
        .track-section {
            background-color: var(--bg);
        }

        .track-scroll {
            display: flex;
            gap: var(--spacing-lg);
            overflow-x: auto;
            padding: var(--spacing-md) 4px var(--spacing-lg);
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: var(--primary-lighter) transparent;
        }

        .track-scroll::-webkit-scrollbar {
            height: 6px;
        }
        .track-scroll::-webkit-scrollbar-track {
            background: transparent;
        }
        .track-scroll::-webkit-scrollbar-thumb {
            background: var(--primary-lighter);
            border-radius: 10px;
        }

        .track-card {
            min-width: 280px;
            max-width: 280px;
            scroll-snap-align: start;
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
            flex-shrink: 0;
            cursor: pointer;
        }

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

        .track-card .track-img {
            height: 175px;
            overflow: hidden;
            position: relative;
        }

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

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

        .track-card .track-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255, 255, 255, 0.92);
            color: var(--primary);
            font-size: 0.72rem;
            font-weight: 700;
            padding: 0.3rem 0.8rem;
            border-radius: 50px;
            letter-spacing: 0.04em;
            backdrop-filter: blur(4px);
        }

        .track-card .track-body {
            padding: var(--spacing-md) var(--spacing-lg);
        }

        .track-card .track-body h4 {
            font-size: 0.98rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 0.4rem;
            line-height: 1.4;
        }

        .track-card .track-body p {
            font-size: 0.84rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }

        .track-card .track-meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            margin-top: var(--spacing-sm);
            font-size: 0.75rem;
            color: var(--text-light);
        }

        .track-card .track-meta i {
            font-size: 0.65rem;
        }

        /* ========== 热播推荐 ========== */
        .featured-section {
            background-color: var(--bg-warm);
        }

        .featured-banner {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 0;
            background: var(--card-bg);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }

        .featured-banner:hover {
            box-shadow: var(--shadow-lg);
        }

        .featured-banner .featured-img {
            min-height: 380px;
            position: relative;
            overflow: hidden;
        }

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

        .featured-banner:hover .featured-img img {
            transform: scale(1.04);
        }

        .featured-banner .featured-label {
            position: absolute;
            top: 20px;
            left: 20px;
            background: var(--accent);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.35rem 1rem;
            border-radius: 50px;
            letter-spacing: 0.05em;
        }

        .featured-banner .featured-body {
            padding: var(--spacing-2xl);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .featured-banner .featured-body h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.35;
            margin-bottom: var(--spacing-sm);
        }

        .featured-banner .featured-body p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: var(--spacing-lg);
        }

        .btn-primary-custom {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            padding: 0.6rem 1.6rem;
            border-radius: 50px;
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            transition: all var(--transition-base);
            align-self: flex-start;
        }

        .btn-primary-custom:hover {
            background: var(--primary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(26, 58, 92, 0.28);
        }

        /* ========== 片单分区 ========== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }

        .category-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-xs);
            transition: all var(--transition-base);
            cursor: pointer;
            position: relative;
        }

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

        .category-card .cat-img {
            height: 170px;
            overflow: hidden;
            position: relative;
        }

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

        .category-card:hover .cat-img img {
            transform: scale(1.05);
        }

        .category-card .cat-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(0, 0, 0, 0) 40%, rgba(0, 0, 0, 0.55) 100%);
            display: flex;
            align-items: flex-end;
            padding: var(--spacing-md);
        }

        .category-card .cat-overlay span {
            color: #fff;
            font-weight: 600;
            font-size: 1.1rem;
            letter-spacing: 0.02em;
        }

        .category-card .cat-body {
            padding: var(--spacing-md) var(--spacing-lg);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .category-card .cat-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        .category-card .cat-body .cat-count {
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--primary);
            background: var(--secondary-soft);
            padding: 0.25rem 0.8rem;
            border-radius: 50px;
            white-space: nowrap;
        }

        /* ========== 社会认同 ========== */
        .social-section {
            background-color: var(--bg);
        }

        .social-stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-2xl);
        }

        .social-stat-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            text-align: center;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-xs);
            transition: all var(--transition-base);
        }

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

        .social-stat-card .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
            line-height: 1.2;
        }

        .social-stat-card .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 0.3rem;
        }

        .testimonial-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-xs);
            transition: all var(--transition-base);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

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

        .testimonial-card .testimonial-quote {
            font-size: 0.92rem;
            color: var(--text);
            line-height: 1.8;
            margin-bottom: var(--spacing-md);
            flex-grow: 1;
        }

        .testimonial-card .testimonial-user {
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }

        .testimonial-card .testimonial-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 0.95rem;
            flex-shrink: 0;
        }

        .testimonial-card .testimonial-user .user-name {
            font-size: 0.88rem;
            font-weight: 700;
            color: var(--text);
        }

        .testimonial-card .testimonial-user .user-role {
            font-size: 0.75rem;
            color: var(--text-light);
        }

        .testimonial-card .verified-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--accent);
            background: var(--accent-soft);
            padding: 0.2rem 0.7rem;
            border-radius: 50px;
            margin-left: auto;
        }

        /* ========== 资讯区 ========== */
        .news-section {
            background-color: var(--bg-warm);
        }

        .news-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: var(--spacing-2xl);
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .news-item {
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-lg);
            padding: var(--spacing-lg) 0;
            border-bottom: 1px solid var(--border-light);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

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

        .news-item:hover {
            padding-left: 8px;
        }

        .news-item .news-date {
            flex-shrink: 0;
            width: 58px;
            text-align: center;
            background: var(--card-bg);
            border-radius: var(--radius-sm);
            padding: 0.5rem 0.3rem;
            border: 1px solid var(--border-light);
        }

        .news-item .news-date .day {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
        }

        .news-item .news-date .month {
            font-size: 0.7rem;
            color: var(--text-muted);
        }

        .news-item .news-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
            transition: color var(--transition-fast);
        }

        .news-item:hover .news-title {
            color: var(--primary);
        }

        .news-item .news-excerpt {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 0.25rem;
            line-height: 1.6;
        }

        .news-sidebar .side-widget {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-xs);
            margin-bottom: var(--spacing-lg);
        }

        .news-sidebar .side-widget h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: var(--spacing-md);
            padding-bottom: var(--spacing-sm);
            border-bottom: 2px solid var(--secondary-soft);
        }

        .hot-list-item {
            display: flex;
            align-items: flex-start;
            gap: 0.8rem;
            padding: 0.6rem 0;
            border-bottom: 1px solid var(--border-light);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

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

        .hot-list-item:hover .hot-list-title {
            color: var(--primary);
        }

        .hot-list-item .hot-rank {
            font-size: 1.05rem;
            font-weight: 800;
            color: var(--primary-lighter);
            flex-shrink: 0;
            width: 28px;
            text-align: center;
        }

        .hot-list-item.rank-1 .hot-rank {
            color: #ef4444;
        }
        .hot-list-item.rank-2 .hot-rank {
            color: #f97316;
        }
        .hot-list-item.rank-3 .hot-rank {
            color: #eab308;
        }

        .hot-list-item .hot-list-title {
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text);
            line-height: 1.5;
            transition: color var(--transition-fast);
        }

        .hot-list-item .hot-list-meta {
            font-size: 0.72rem;
            color: var(--text-light);
            margin-top: 0.1rem;
            display: flex;
            gap: 0.8rem;
        }

        /* ========== 活动亮点墙 ========== */
        .activity-section {
            background-color: var(--bg);
        }

        .activity-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }

        .activity-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-xs);
            transition: all var(--transition-base);
            cursor: pointer;
            position: relative;
        }

        .activity-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-5px);
            border-color: var(--border);
        }

        .activity-card .activity-img {
            height: 190px;
            overflow: hidden;
            position: relative;
        }

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

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

        .activity-card .activity-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(255, 255, 255, 0.92);
            color: var(--primary);
            font-size: 0.72rem;
            font-weight: 700;
            padding: 0.3rem 0.9rem;
            border-radius: 50px;
            letter-spacing: 0.04em;
            backdrop-filter: blur(4px);
        }

        .activity-card .activity-body {
            padding: var(--spacing-md) var(--spacing-lg) var(--spacing-lg);
        }

        .activity-card .activity-body h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 0.4rem;
            line-height: 1.4;
        }

        .activity-card .activity-body p {
            font-size: 0.84rem;
            color: var(--text-muted);
            margin-bottom: var(--spacing-sm);
            line-height: 1.6;
        }

        .btn-outline-custom {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            font-weight: 600;
            font-size: 0.8rem;
            padding: 0.4rem 1.2rem;
            border-radius: 50px;
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
        }

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

        /* ========== 误区澄清 ========== */
        .clarify-section {
            background-color: var(--bg-warm);
        }

        .clarify-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-lg);
        }

        .clarify-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-xs);
            transition: all var(--transition-base);
            height: 100%;
        }

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

        .clarify-card .clarify-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: var(--spacing-md);
            font-size: 1.1rem;
        }

        .clarify-card .clarify-icon.wrong {
            background: #fef2f2;
            color: #ef4444;
        }

        .clarify-card .clarify-icon.right {
            background: var(--accent-soft);
            color: var(--accent);
        }

        .clarify-card h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 0.4rem;
        }

        .clarify-card h4.wrong {
            color: #ef4444;
        }
        .clarify-card h4.right {
            color: var(--accent);
        }

        .clarify-card p {
            font-size: 0.87rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ========== 合作流程 ========== */
        .process-section {
            background-color: var(--bg);
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: var(--spacing-md);
            position: relative;
        }

        .process-steps::before {
            content: '';
            position: absolute;
            top: 32px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: var(--border);
            z-index: 0;
        }

        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
            cursor: pointer;
            transition: all var(--transition-base);
        }

        .process-step:hover .step-circle {
            transform: scale(1.1);
            box-shadow: var(--shadow-md);
        }

        .process-step .step-circle {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--card-bg);
            border: 3px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--spacing-sm);
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary);
            transition: all var(--transition-base);
            position: relative;
        }

        .process-step.active .step-circle {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 6px 20px rgba(26, 58, 92, 0.3);
        }

        .process-step h5 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 0.2rem;
        }

        .process-step p {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.5;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background-color: var(--bg-warm);
        }

        .faq-list .accordion-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg) !important;
            margin-bottom: var(--spacing-md);
            overflow: hidden;
            background: var(--card-bg);
            box-shadow: var(--shadow-xs);
            transition: all var(--transition-base);
            border-left: none;
            border-right: none;
        }

        .faq-list .accordion-item:hover {
            box-shadow: var(--shadow-sm);
            border-color: var(--border);
        }

        .faq-list .accordion-button {
            background: transparent;
            color: var(--text);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 1.1rem 1.5rem;
            box-shadow: none;
            border: none;
            border-radius: var(--radius-lg) !important;
        }

        .faq-list .accordion-button:not(.collapsed) {
            background: var(--secondary-soft);
            color: var(--primary);
            box-shadow: none;
        }

        .faq-list .accordion-button:focus {
            box-shadow: none;
            border: none;
        }

        .faq-list .accordion-body {
            padding: 0.8rem 1.5rem 1.2rem;
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.8;
        }

        .faq-list .accordion-button::after {
            flex-shrink: 0;
            width: 1rem;
            height: 1rem;
            background-size: 1rem;
            transition: all var(--transition-fast);
        }

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            background-color: var(--primary);
            overflow: hidden;
        }

        .cta-section .cta-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.25;
            z-index: 0;
        }

        .cta-section .cta-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 25, 47, 0.85) 0%, rgba(26, 58, 92, 0.75) 100%);
            z-index: 1;
        }

        .cta-section .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: var(--spacing-3xl) 0;
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-section .cta-content h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
            margin-bottom: var(--spacing-md);
        }

        .cta-section .cta-content p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.8;
            margin-bottom: var(--spacing-xl);
        }

        .cta-section .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-md);
            justify-content: center;
        }

        /* ========== FOOTER ========== */
        .footer-custom {
            background-color: #0f1e31;
            padding: var(--spacing-3xl) 0 var(--spacing-lg);
            color: rgba(255, 255, 255, 0.7);
        }

        .footer-custom .footer-brand {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-sm);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .footer-custom .footer-brand .brand-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--secondary) 0%, var(--primary-light) 100%);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.85rem;
        }

        .footer-custom .footer-desc {
            font-size: 0.85rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 400px;
            margin-bottom: var(--spacing-lg);
        }

        .footer-custom .footer-links h6 {
            font-size: 0.85rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.04em;
        }

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

        .footer-custom .footer-links ul li {
            margin-bottom: 0.5rem;
        }

        .footer-custom .footer-links ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }

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

        .footer-custom .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: var(--spacing-lg);
            margin-top: var(--spacing-2xl);
            text-align: center;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.42);
        }

        /* ========== 底部固定转化条 ========== */
        .fixed-cta-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid var(--border-light);
            box-shadow: 0 -6px 28px rgba(26, 58, 92, 0.1);
            z-index: 1050;
            padding: 0.7rem 1.2rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            transform: translateY(120%);
            transition: transform var(--transition-slow);
        }

        .fixed-cta-bar.visible {
            transform: translateY(0);
        }

        .fixed-cta-bar .fixed-cta-text {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .fixed-cta-bar .fixed-cta-text span {
            color: var(--accent);
        }

        .fixed-cta-bar .btn-join {
            background: linear-gradient(135deg, var(--accent) 0%, #0b9d6e 100%);
            color: #fff;
            font-weight: 600;
            font-size: 0.85rem;
            padding: 0.5rem 1.4rem;
            border-radius: 50px;
            border: none;
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            transition: all var(--transition-base);
        }

        .fixed-cta-bar .btn-join:hover {
            background: linear-gradient(135deg, #0b9d6e 0%, #078a5b 100%);
            color: #fff;
            transform: translateY(-1px);
        }

        body.has-fixed-cta {
            padding-bottom: 60px;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .hero-video h1 {
                font-size: 2.3rem;
            }
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .social-stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(3, 1fr);
                gap: var(--spacing-lg);
            }
            .process-steps::before {
                display: none;
            }
            .news-layout {
                grid-template-columns: 1fr;
                gap: var(--spacing-xl);
            }
        }

        @media (max-width: 768px) {
            .hero-video {
                min-height: 560px;
            }
            .hero-video h1 {
                font-size: 1.85rem;
            }
            .hero-video .hero-desc {
                font-size: 0.95rem;
            }
            .hero-video .hero-stats {
                gap: var(--spacing-lg);
            }
            .hero-video .hero-stat .stat-num {
                font-size: 1.4rem;
            }
            .featured-banner {
                grid-template-columns: 1fr;
            }
            .featured-banner .featured-img {
                min-height: 240px;
            }
            .category-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-md);
            }
            .activity-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-md);
            }
            .clarify-grid {
                grid-template-columns: 1fr;
            }
            .social-stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-md);
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
            .section {
                padding-top: var(--spacing-2xl);
                padding-bottom: var(--spacing-2xl);
            }
            .track-card {
                min-width: 240px;
                max-width: 240px;
            }
            .track-card .track-img {
                height: 150px;
            }
            .navbar-custom .nav-link {
                padding: 0.6rem 1rem;
            }
            .fixed-cta-bar {
                padding: 0.55rem 1rem;
            }
            .fixed-cta-bar .fixed-cta-text {
                font-size: 0.78rem;
            }
            .fixed-cta-bar .btn-join {
                font-size: 0.78rem;
                padding: 0.45rem 1rem;
            }
        }

        @media (max-width: 520px) {
            .hero-video {
                min-height: 500px;
            }
            .hero-video h1 {
                font-size: 1.55rem;
            }
            .hero-video .hero-actions {
                flex-direction: column;
                align-items: flex-start;
                width: 100%;
            }
            .hero-video .hero-actions .btn-hero-primary,
            .hero-video .hero-actions .btn-hero-secondary {
                width: 100%;
                justify-content: center;
            }
            .hero-video .hero-play {
                width: 52px;
                height: 52px;
                font-size: 1.1rem;
            }
            .hero-video .hero-stats {
                gap: var(--spacing-md);
                flex-wrap: wrap;
            }
            .hero-video .hero-stat .stat-num {
                font-size: 1.2rem;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .activity-grid {
                grid-template-columns: 1fr;
            }
            .social-stats-row {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-sm);
            }
            .social-stat-card {
                padding: var(--spacing-md);
            }
            .social-stat-card .stat-num {
                font-size: 1.6rem;
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-lg);
            }
            .section-header h2 {
                font-size: 1.45rem;
            }
            .featured-banner .featured-body {
                padding: var(--spacing-lg);
            }
            .featured-banner .featured-body h3 {
                font-size: 1.3rem;
            }
            .news-item {
                flex-direction: column;
                gap: 0.5rem;
            }
            .news-item .news-date {
                width: auto;
                display: inline-flex;
                align-items: center;
                gap: 0.5rem;
                padding: 0.3rem 0.8rem;
            }
            .news-item .news-date .day {
                font-size: 1rem;
            }
            .news-item .news-date .month {
                font-size: 0.68rem;
            }
            .track-card {
                min-width: 200px;
                max-width: 200px;
            }
            .track-card .track-img {
                height: 130px;
            }
            .fixed-cta-bar .fixed-cta-text {
                font-size: 0.72rem;
                white-space: nowrap;
            }
            .fixed-cta-bar .btn-join {
                font-size: 0.72rem;
                padding: 0.4rem 0.85rem;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}