/* roulang page: index */
/* ========== 设计变量 ========== */
        :root {
            --color-primary: #152b44;
            --color-primary-light: #1e3d5c;
            --color-primary-dark: #0e1f33;
            --color-accent: #d4a843;
            --color-accent-hover: #c49630;
            --color-accent-light: #f5e6c8;
            --color-bg: #f4f5f7;
            --color-bg-white: #ffffff;
            --color-bg-dark: #152b44;
            --color-bg-darker: #0e1f33;
            --color-text: #1a1a2e;
            --color-text-secondary: #4a5568;
            --color-text-muted: #7b8794;
            --color-text-light: #9ca3af;
            --color-text-on-dark: #e2e6ea;
            --color-border: #e2e6ea;
            --color-border-light: #eef0f4;
            --color-success: #10b981;
            --color-warning: #f59e0b;
            --color-danger: #ef4444;
            --color-info: #3b82f6;
            --radius-xs: 6px;
            --radius-sm: 10px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --radius-full: 50%;
            --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 14px 36px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 22px 50px rgba(0, 0, 0, 0.13);
            --shadow-card-hover: 0 10px 30px rgba(0, 0, 0, 0.12);
            --sidebar-width: 268px;
            --mobile-header-height: 58px;
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family-base: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
        }

        /* ========== 基础 Reset ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

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

        body {
            font-family: var(--font-family-base);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            min-height: 100vh;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent);
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            padding: 0;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: var(--radius-xs);
        }
        ul,
        ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text);
        }
        p {
            margin: 0;
            color: var(--color-text-secondary);
        }
        hr {
            border: none;
            border-top: 1px solid var(--color-border);
            margin: 0;
        }
        .container {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 28px;
        }

        /* ========== 桌面端侧边栏 ========== */
        .app-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: linear-gradient(180deg, #162d47 0%, #0f2337 100%);
            z-index: 1050;
            display: flex;
            flex-direction: column;
            box-shadow: 4px 0 30px rgba(0, 0, 0, 0.18);
            overflow-y: auto;
            overflow-x: hidden;
            transition: transform var(--transition-slow);
        }
        .app-sidebar::-webkit-scrollbar {
            width: 4px;
        }
        .app-sidebar::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.12);
            border-radius: 10px;
        }
        .sidebar-brand {
            padding: 26px 22px 20px 22px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            flex-shrink: 0;
        }
        .sidebar-brand .brand-link {
            display: flex;
            align-items: center;
            gap: 12px;
            color: #ffffff;
            font-weight: 700;
            font-size: 1.2rem;
            letter-spacing: 0.3px;
            transition: opacity var(--transition-fast);
        }
        .sidebar-brand .brand-link:hover {
            opacity: 0.85;
            color: #ffffff;
        }
        .sidebar-brand .brand-icon {
            width: 40px;
            height: 40px;
            background: var(--color-accent);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #1a1a2e;
            flex-shrink: 0;
            font-weight: 900;
        }
        .sidebar-nav-wrap {
            flex: 1;
            padding: 14px 14px 14px 14px;
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .sidebar-nav-wrap .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: rgba(255, 255, 255, 0.75);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            cursor: pointer;
            white-space: nowrap;
        }
        .sidebar-nav-wrap .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .sidebar-nav-wrap .nav-item:hover {
            background: rgba(255, 255, 255, 0.07);
            color: #ffffff;
        }
        .sidebar-nav-wrap .nav-item.active {
            background: rgba(212, 168, 67, 0.18);
            color: var(--color-accent);
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--color-accent);
        }
        .sidebar-search {
            padding: 0 14px 16px 14px;
            flex-shrink: 0;
        }
        .sidebar-search .search-box {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            gap: 10px;
            border: 1px solid rgba(255, 255, 255, 0.10);
            transition: all var(--transition-fast);
        }
        .sidebar-search .search-box:focus-within {
            background: rgba(255, 255, 255, 0.13);
            border-color: rgba(255, 255, 255, 0.25);
            box-shadow: 0 0 0 3px rgba(212, 168, 67, 0.10);
        }
        .sidebar-search .search-box input {
            background: transparent;
            border: none;
            outline: none;
            color: #ffffff;
            flex: 1;
            font-size: 0.9rem;
            min-width: 0;
        }
        .sidebar-search .search-box input::placeholder {
            color: rgba(255, 255, 255, 0.35);
        }
        .sidebar-search .search-box button {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.95rem;
            transition: color var(--transition-fast);
            flex-shrink: 0;
        }
        .sidebar-search .search-box button:hover {
            color: var(--color-accent);
        }
        .sidebar-footer {
            padding: 14px 18px 18px 18px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            flex-shrink: 0;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.35);
            text-align: center;
        }

        /* ========== 移动端顶部栏 ========== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--mobile-header-height);
            background: linear-gradient(135deg, #162d47 0%, #0f2337 100%);
            z-index: 1040;
            align-items: center;
            padding: 0 16px;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.18);
        }
        .mobile-header .mobile-brand {
            color: #ffffff;
            font-weight: 700;
            font-size: 1.05rem;
            letter-spacing: 0.3px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .mobile-header .mobile-brand .brand-icon-sm {
            width: 32px;
            height: 32px;
            background: var(--color-accent);
            border-radius: var(--radius-xs);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            color: #1a1a2e;
            font-weight: 900;
            flex-shrink: 0;
        }
        .mobile-header .hamburger-btn {
            color: #ffffff;
            font-size: 1.5rem;
            padding: 6px 8px;
            border-radius: var(--radius-xs);
            transition: background var(--transition-fast);
            flex-shrink: 0;
        }
        .mobile-header .hamburger-btn:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        .mobile-header .mobile-header-right {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .mobile-header .mobile-search-trigger {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.2rem;
            padding: 6px 8px;
            border-radius: var(--radius-xs);
            transition: all var(--transition-fast);
        }
        .mobile-header .mobile-search-trigger:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.08);
        }

        /* ========== 移动端 Offcanvas ========== */
        .offcanvas-custom {
            background: linear-gradient(180deg, #162d47 0%, #0f2337 100%);
            color: #ffffff;
            width: 280px !important;
            border-right: none !important;
        }
        .offcanvas-custom .offcanvas-header {
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 18px 20px;
        }
        .offcanvas-custom .offcanvas-title {
            color: #ffffff;
            font-weight: 700;
            font-size: 1.1rem;
            letter-spacing: 0.3px;
        }
        .offcanvas-custom .btn-close {
            filter: invert(1) brightness(2);
            opacity: 0.7;
        }
        .offcanvas-custom .btn-close:hover {
            opacity: 1;
        }
        .offcanvas-custom .offcanvas-body {
            padding: 12px 8px;
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .offcanvas-custom .offcanvas-body .nav-item-mobile {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 13px 18px;
            border-radius: var(--radius-sm);
            color: rgba(255, 255, 255, 0.75);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .offcanvas-custom .offcanvas-body .nav-item-mobile i {
            width: 20px;
            text-align: center;
            flex-shrink: 0;
        }
        .offcanvas-custom .offcanvas-body .nav-item-mobile:hover {
            background: rgba(255, 255, 255, 0.07);
            color: #ffffff;
        }
        .offcanvas-custom .offcanvas-body .nav-item-mobile.active {
            background: rgba(212, 168, 67, 0.18);
            color: var(--color-accent);
            font-weight: 600;
        }
        .offcanvas-custom .offcanvas-search {
            padding: 10px 16px 16px 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: auto;
        }
        .offcanvas-custom .offcanvas-search .search-box-mobile {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            gap: 10px;
            border: 1px solid rgba(255, 255, 255, 0.10);
        }
        .offcanvas-custom .offcanvas-search input {
            background: transparent;
            border: none;
            outline: none;
            color: #ffffff;
            flex: 1;
            font-size: 0.9rem;
        }
        .offcanvas-custom .offcanvas-search input::placeholder {
            color: rgba(255, 255, 255, 0.35);
        }
        .offcanvas-custom .offcanvas-search button {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.95rem;
            flex-shrink: 0;
        }

        /* ========== 主内容区 ========== */
        .main-content {
            margin-left: var(--sidebar-width);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ========== Hero 板块 ========== */
        .hero-section {
            background: linear-gradient(155deg, #f8f9fb 0%, #edf1f6 40%, #e8ecf2 100%);
            padding: 60px 0 64px 0;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(212, 168, 67, 0.10) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: 20%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(21, 43, 68, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-section .container {
            position: relative;
            z-index: 1;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #ffffff;
            border: 1px solid var(--color-border);
            border-radius: 50px;
            padding: 7px 18px;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            margin-bottom: 20px;
            box-shadow: var(--shadow-xs);
        }
        .hero-badge .live-dot {
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: var(--color-success);
            animation: pulse-dot 1.8s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.5);
            }
            50% {
                box-shadow: 0 0 0 10px rgba(16, 185, 129, 0);
            }
        }
        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--color-primary-dark);
            line-height: 1.2;
            margin-bottom: 16px;
            max-width: 650px;
            letter-spacing: -0.3px;
        }
        .hero-title .highlight {
            color: var(--color-accent);
            position: relative;
        }
        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--color-text-secondary);
            margin-bottom: 30px;
            max-width: 540px;
            line-height: 1.7;
        }
        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .btn-brand-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-primary);
            color: #ffffff;
            padding: 13px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
            white-space: nowrap;
        }
        .btn-brand-primary:hover {
            background: var(--color-primary-light);
            color: #ffffff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-brand-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }
        .btn-brand-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #ffffff;
            color: var(--color-primary);
            padding: 13px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            border: 1.5px solid var(--color-border);
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-xs);
            white-space: nowrap;
        }
        .btn-brand-outline:hover {
            border-color: var(--color-primary);
            background: #fafbfc;
            color: var(--color-primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .btn-brand-outline:active {
            transform: translateY(0);
        }
        .btn-brand-accent {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-accent);
            color: #1a1a2e;
            padding: 13px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
            white-space: nowrap;
        }
        .btn-brand-accent:hover {
            background: var(--color-accent-hover);
            color: #1a1a2e;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-brand-accent:active {
            transform: translateY(0);
        }
        .hero-stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            margin-top: 36px;
            padding-top: 28px;
            border-top: 1px solid var(--color-border-light);
        }
        .hero-stat {
            text-align: left;
        }
        .hero-stat .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1;
        }
        .hero-stat .stat-label {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin-top: 4px;
        }

        /* ========== 通用板块 ========== */
        .section-block {
            padding: 56px 0;
        }
        .section-block.bg-white {
            background: var(--color-bg-white);
        }
        .section-block.bg-light {
            background: var(--color-bg);
        }
        .section-block.bg-dark-accent {
            background: var(--color-bg-dark);
            color: var(--color-text-on-dark);
        }
        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-header .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--color-accent);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 8px;
        }
        .section-header .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-text);
            margin-bottom: 10px;
            letter-spacing: -0.2px;
        }
        .section-header .section-desc {
            font-size: 1rem;
            color: var(--color-text-muted);
            max-width: 580px;
            margin: 0 auto;
        }
        .section-block.bg-dark-accent .section-title {
            color: #ffffff;
        }
        .section-block.bg-dark-accent .section-desc {
            color: rgba(255, 255, 255, 0.65);
        }
        .section-block.bg-dark-accent .section-label {
            color: var(--color-accent);
        }

        /* ========== 功能卡片 ========== */
        .feature-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            transition: all var(--transition-base);
            height: 100%;
            display: flex;
            flex-direction: column;
            align-items: flex-start;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-border);
        }
        .feature-card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 18px;
            flex-shrink: 0;
        }
        .feature-card .card-icon.blue {
            background: #e8f0fa;
            color: #1e5aa8;
        }
        .feature-card .card-icon.gold {
            background: #fdf3dc;
            color: #b8861e;
        }
        .feature-card .card-icon.green {
            background: #e6f7ee;
            color: #0d7a40;
        }
        .feature-card .card-icon.purple {
            background: #f0e8fa;
            color: #5a3e85;
        }
        .feature-card .card-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
        }
        .feature-card .card-desc {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.65;
            flex: 1;
        }

        /* ========== 赛事视频卡片 ========== */
        .video-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            transition: all var(--transition-base);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .video-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-border);
        }
        .video-card .card-img-wrap {
            position: relative;
            background: linear-gradient(135deg, #1a3a5c 0%, #0f2337 100%);
            aspect-ratio: 16 / 9;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }
        .video-card .card-img-wrap .play-icon-overlay {
            width: 54px;
            height: 54px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.9);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--color-primary);
            transition: all var(--transition-base);
            z-index: 2;
            position: relative;
        }
        .video-card:hover .card-img-wrap .play-icon-overlay {
            background: var(--color-accent);
            color: #1a1a2e;
            transform: scale(1.08);
        }
        .video-card .card-img-wrap .match-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(0, 0, 0, 0.65);
            color: #ffffff;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            z-index: 2;
            backdrop-filter: blur(4px);
        }
        .video-card .card-img-wrap .duration-badge {
            position: absolute;
            bottom: 12px;
            right: 12px;
            background: rgba(0, 0, 0, 0.7);
            color: #ffffff;
            padding: 3px 10px;
            border-radius: 50px;
            font-size: 0.73rem;
            font-weight: 500;
            z-index: 2;
            backdrop-filter: blur(4px);
        }
        .video-card .card-body-custom {
            padding: 16px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .video-card .card-body-custom .video-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .video-card .card-body-custom .video-meta {
            font-size: 0.82rem;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .video-card .card-body-custom .video-tag {
            display: inline-block;
            font-size: 0.73rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 50px;
            background: #fef3da;
            color: #b8861e;
            margin-top: 10px;
            align-self: flex-start;
        }

        /* ========== 数据统计块 ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            text-align: center;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            transition: all var(--transition-base);
        }
        .stat-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .stat-card .stat-icon {
            font-size: 1.6rem;
            color: var(--color-accent);
            margin-bottom: 10px;
        }
        .stat-card .stat-value {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1;
            margin-bottom: 6px;
        }
        .stat-card .stat-desc {
            font-size: 0.85rem;
            color: var(--color-text-muted);
        }

        /* ========== 流程步骤 ========== */
        .steps-row {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .step-item {
            flex: 1 1 220px;
            max-width: 260px;
            text-align: center;
            position: relative;
            padding: 20px 16px;
        }
        .step-item .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.2rem;
            margin: 0 auto 16px auto;
            position: relative;
            z-index: 2;
        }
        .step-item .step-connector {
            display: none;
            position: absolute;
            top: 44px;
            left: calc(50% + 40px);
            width: calc(100% - 80px);
            height: 2px;
            background: var(--color-border);
            z-index: 1;
        }
        .step-item .step-title {
            font-weight: 700;
            font-size: 1rem;
            color: var(--color-text);
            margin-bottom: 4px;
        }
        .step-item .step-desc {
            font-size: 0.85rem;
            color: var(--color-text-muted);
        }

        /* ========== 内容列表 ========== */
        .content-list-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 18px;
            background: #ffffff;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            margin-bottom: 10px;
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .content-list-item:hover {
            border-color: var(--color-border);
            box-shadow: var(--shadow-sm);
            background: #fafbfc;
        }
        .content-list-item .list-thumb {
            width: 64px;
            height: 44px;
            border-radius: var(--radius-xs);
            background: linear-gradient(135deg, #1e3d5c 0%, #0f2337 100%);
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
        }
        .content-list-item .list-info {
            flex: 1;
            min-width: 0;
        }
        .content-list-item .list-info .list-title {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--color-text);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .content-list-item .list-info .list-meta {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            margin-top: 2px;
        }
        .content-list-item .list-arrow {
            color: var(--color-text-light);
            font-size: 0.9rem;
            flex-shrink: 0;
            transition: transform var(--transition-fast);
        }
        .content-list-item:hover .list-arrow {
            transform: translateX(4px);
            color: var(--color-accent);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            background: #ffffff;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            margin-bottom: 10px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--color-border);
            box-shadow: var(--shadow-xs);
        }
        .faq-question {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: color var(--transition-fast);
            user-select: none;
        }
        .faq-question:hover {
            color: var(--color-primary-light);
        }
        .faq-question .faq-icon {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            color: var(--color-accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 22px;
            font-size: 0.92rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px 22px;
        }

        /* ========== CTA 板块 ========== */
        .cta-block {
            background: linear-gradient(145deg, #152b44 0%, #1a3555 40%, #0f2337 100%);
            border-radius: var(--radius-xl);
            padding: 50px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(212, 168, 67, 0.14) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-block .cta-title {
            font-size: 1.8rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }
        .cta-block .cta-desc {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
        }
        .cta-block .btn-brand-accent {
            position: relative;
            z-index: 1;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--color-bg-darker);
            color: rgba(255, 255, 255, 0.6);
            padding: 40px 0 28px 0;
            margin-top: auto;
        }
        .site-footer .footer-brand {
            font-size: 1.15rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 8px;
        }
        .site-footer .footer-desc {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
            max-width: 400px;
            line-height: 1.6;
        }
        .site-footer .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: flex-end;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.88rem;
            transition: color var(--transition-fast);
        }
        .site-footer .footer-links a:hover {
            color: var(--color-accent);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 24px;
            padding-top: 20px;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.35);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 10px;
        }

        /* ========== 标签/徽章 ========== */
        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        .tag-gold {
            background: #fef3da;
            color: #9a6e1a;
        }
        .tag-blue {
            background: #e8f0fa;
            color: #1e5aa8;
        }
        .tag-green {
            background: #e6f7ee;
            color: #0d7a40;
        }
        .tag-red {
            background: #fde8e8;
            color: #b91c1c;
        }

        /* ========== 响应式设计 ========== */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .cta-block {
                padding: 36px 24px;
            }
            .cta-block .cta-title {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 992px) {
            .app-sidebar {
                display: none;
            }
            .mobile-header {
                display: flex;
            }
            .main-content {
                margin-left: 0;
                padding-top: var(--mobile-header-height);
            }
            .hero-section {
                padding: 40px 0 44px 0;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-stats-row {
                gap: 18px;
            }
            .hero-stat .stat-number {
                font-size: 1.5rem;
            }
            .section-header .section-title {
                font-size: 1.5rem;
            }
            .section-block {
                padding: 40px 0;
            }
            .steps-row {
                gap: 12px;
            }
            .step-item {
                flex: 1 1 160px;
                max-width: 200px;
                padding: 14px 10px;
            }
            .step-item .step-connector {
                display: none;
            }
            .video-card .card-body-custom {
                padding: 14px 14px;
            }
            .site-footer .footer-links {
                justify-content: flex-start;
            }
            .content-list-item {
                padding: 14px 14px;
                gap: 12px;
            }
            .content-list-item .list-thumb {
                width: 50px;
                height: 36px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            .hero-title {
                font-size: 1.5rem;
            }
            .hero-subtitle {
                font-size: 0.9rem;
            }
            .hero-buttons {
                flex-direction: column;
            }
            .hero-buttons .btn-brand-primary,
            .hero-buttons .btn-brand-outline,
            .hero-buttons .btn-brand-accent {
                width: 100%;
                justify-content: center;
                padding: 12px 20px;
                font-size: 0.9rem;
            }
            .hero-stats-row {
                gap: 12px;
                flex-wrap: wrap;
            }
            .hero-stat {
                flex: 1 1 40%;
                text-align: center;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-card {
                padding: 20px 14px;
            }
            .stat-card .stat-value {
                font-size: 1.6rem;
            }
            .section-header .section-title {
                font-size: 1.3rem;
            }
            .section-block {
                padding: 32px 0;
            }
            .feature-card {
                padding: 22px 16px;
            }
            .feature-card .card-icon {
                width: 42px;
                height: 42px;
                font-size: 1.1rem;
                border-radius: var(--radius-sm);
            }
            .cta-block {
                padding: 28px 18px;
                border-radius: var(--radius-lg);
            }
            .cta-block .cta-title {
                font-size: 1.3rem;
            }
            .video-card .card-img-wrap .play-icon-overlay {
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
            .faq-question {
                padding: 15px 16px;
                font-size: 0.9rem;
            }
            .faq-answer {
                padding: 0 16px;
                font-size: 0.85rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 14px 16px;
            }
            .content-list-item .list-info .list-title {
                font-size: 0.88rem;
            }
            .site-footer {
                padding: 28px 0 20px 0;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .site-footer .footer-links {
                justify-content: center;
                gap: 10px;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.3rem;
            }
            .hero-section {
                padding: 28px 0 32px 0;
            }
            .hero-badge {
                font-size: 0.78rem;
                padding: 5px 14px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .stat-card .stat-value {
                font-size: 1.3rem;
            }
            .stat-card .stat-desc {
                font-size: 0.75rem;
            }
            .feature-card {
                padding: 18px 14px;
            }
            .feature-card .card-title {
                font-size: 1rem;
            }
            .feature-card .card-desc {
                font-size: 0.82rem;
            }
            .section-header .section-title {
                font-size: 1.15rem;
            }
            .section-header .section-desc {
                font-size: 0.85rem;
            }
            .btn-brand-primary,
            .btn-brand-outline,
            .btn-brand-accent {
                padding: 10px 16px;
                font-size: 0.85rem;
            }
            .video-card .card-body-custom .video-title {
                font-size: 0.9rem;
            }
            .cta-block .cta-title {
                font-size: 1.15rem;
            }
            .cta-block .cta-desc {
                font-size: 0.85rem;
            }
            .steps-row {
                flex-direction: column;
                align-items: center;
            }
            .step-item {
                max-width: 100%;
                flex: 1 1 auto;
            }
        }

        /* ========== 辅助工具类 ========== */
        .text-accent {
            color: var(--color-accent);
        }
        .text-muted {
            color: var(--color-text-muted);
        }
        .fw-800 {
            font-weight: 800;
        }
        .gap-20 {
            gap: 20px;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .mt-auto {
            margin-top: auto;
        }