/* roulang page: index */
:root {
            --primary-dark: #0D3823;
            --primary-green: #134E2C;
            --accent-green: #00E676;
            --accent-emerald: #10B981;
            --accent-gold: #F59E0B;
            --dark-card: #0A1912;
            --bg-light: #F8FAFC;
            --text-main: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border-color: rgba(13, 56, 35, 0.08);
            --shadow-sm: 0 4px 20px -2px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 10px 25px -3px rgba(13, 56, 35, 0.12);
            --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--text-body);
            background-color: #FFFFFF;
            line-height: 1.8;
            letter-spacing: 0.01em;
            margin: 0;
            padding: 0;
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--text-main);
            font-weight: 700;
            line-height: 1.35;
        }

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

        /* 统一导航栏样式 */
        .site-header {
            background: rgba(13, 56, 35, 0.96);
            backdrop-filter: blur(12px);
            position: sticky;
            top: 0;
            z-index: 1050;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .navbar-brand-custom {
            font-size: 1.35rem;
            font-weight: 800;
            color: #FFFFFF !important;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .navbar-brand-custom i {
            color: var(--accent-green);
            font-size: 1.5rem;
        }

        .nav-link-custom {
            color: rgba(255, 255, 255, 0.85) !important;
            font-weight: 500;
            padding: 8px 16px !important;
            border-radius: 6px;
            transition: var(--transition-smooth);
        }

        .nav-link-custom:hover, .nav-link-custom.active {
            color: #FFFFFF !important;
            background: rgba(255, 255, 255, 0.1);
        }

        .btn-cta-nav {
            background-color: var(--accent-green);
            color: var(--primary-dark) !important;
            font-weight: 700;
            padding: 9px 22px;
            border-radius: 50px;
            box-shadow: 0 4px 15px rgba(0, 230, 118, 0.3);
            border: none;
            transition: var(--transition-smooth);
        }

        .btn-cta-nav:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 230, 118, 0.45);
            background-color: #00c864;
        }

        /* 英雄视窗 (全宽视频遮罩质感) */
        .hero-section {
            position: relative;
            background: linear-gradient(135deg, #0A1912 0%, #0D3823 60%, #134E2C 100%);
            color: #FFFFFF;
            padding: 90px 0 110px;
            overflow: hidden;
        }

        .hero-pattern {
            position: absolute;
            inset: 0;
            background-image: radial-gradient(rgba(0, 230, 118, 0.12) 1px, transparent 1px);
            background-size: 28px 28px;
            opacity: 0.6;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 230, 118, 0.15);
            color: var(--accent-green);
            border: 1px solid rgba(0, 230, 118, 0.3);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.88rem;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .hero-title {
            font-size: clamp(2.1rem, 4.5vw, 3.4rem);
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: 20px;
            line-height: 1.25;
        }

        .hero-title span {
            color: var(--accent-green);
            background: linear-gradient(to right, #00E676, #F59E0B);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-lead {
            font-size: 1.15rem;
            color: #E2E8F0;
            line-height: 1.85;
            max-width: 840px;
            margin: 0 auto 35px;
        }

        .hero-action-box {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-hero-primary {
            background-color: var(--accent-green);
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 1.05rem;
            padding: 14px 36px;
            border-radius: 50px;
            transition: var(--transition-smooth);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            border: none;
        }

        .btn-hero-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(0, 230, 118, 0.4);
            color: var(--primary-dark);
        }

        .btn-hero-secondary {
            background: rgba(255, 255, 255, 0.12);
            color: #FFFFFF;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 14px 30px;
            border-radius: 50px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            transition: var(--transition-smooth);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-hero-secondary:hover {
            background: rgba(255, 255, 255, 0.2);
            color: #FFFFFF;
            transform: translateY(-3px);
        }

        /* 章节基类 */
        .section-padding {
            padding: 85px 0;
        }

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

        .section-bg-dark {
            background-color: var(--dark-card);
            color: #FFFFFF;
        }

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

        .section-subtitle {
            color: var(--accent-emerald);
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            font-size: 0.88rem;
            display: block;
            margin-bottom: 8px;
        }

        .section-title {
            font-size: clamp(1.75rem, 3vw, 2.35rem);
            margin-bottom: 16px;
        }

        .section-desc {
            color: var(--text-muted);
            max-width: 720px;
            margin: 0 auto;
            font-size: 1rem;
        }

        .section-bg-dark .section-desc {
            color: #94A3B8;
        }

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

        /* 自定义卡片质感 */
        .custom-card {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition-smooth);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .custom-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(19, 78, 44, 0.25);
        }

        .card-dark-style {
            background: #10261C;
            border: 1px solid rgba(0, 230, 118, 0.15);
            color: #FFFFFF;
        }

        .card-dark-style:hover {
            border-color: rgba(0, 230, 118, 0.4);
            box-shadow: 0 10px 30px rgba(0, 230, 118, 0.12);
        }

        .card-icon-wrapper {
            width: 58px;
            height: 58px;
            border-radius: 14px;
            background: rgba(19, 78, 44, 0.08);
            color: var(--primary-green);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin-bottom: 22px;
        }

        .card-dark-style .card-icon-wrapper {
            background: rgba(0, 230, 118, 0.12);
            color: var(--accent-green);
        }

        /* 药丸徽章 */
        .badge-pill-custom {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 700;
        }

        .badge-rank-1 { background: rgba(245, 158, 11, 0.15); color: #D97706; border: 1px solid rgba(245, 158, 11, 0.3); }
        .badge-rate { background: rgba(0, 230, 118, 0.15); color: #059669; border: 1px solid rgba(0, 230, 118, 0.3); }
        .badge-tag { background: #E2E8F0; color: #475569; }

        /* 排行榜单横向条目 */
        .rank-list-item {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 14px;
            padding: 20px 24px;
            margin-bottom: 16px;
            transition: var(--transition-smooth);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 15px;
        }

        .rank-list-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--accent-emerald);
            transform: translateX(4px);
        }

        .rank-index {
            font-size: 1.6rem;
            font-weight: 900;
            width: 40px;
            text-align: center;
            color: var(--text-muted);
        }

        .rank-index.top1 { color: #F59E0B; }
        .rank-index.top2 { color: #10B981; }
        .rank-index.top3 { color: #3B82F6; }

        .progress-bar-custom {
            background-color: var(--accent-emerald);
            height: 8px;
            border-radius: 4px;
        }

        /* 深度横评表格 */
        .comparison-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            background: #FFFFFF;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }

        .comparison-table th {
            background: #0D3823;
            color: #FFFFFF;
            padding: 18px 20px;
            font-weight: 700;
            text-align: center;
        }

        .comparison-table th:first-child { text-align: left; }

        .comparison-table td {
            padding: 18px 20px;
            border-top: 1px solid var(--border-color);
            text-align: center;
            color: var(--text-body);
        }

        .comparison-table td:first-child {
            text-align: left;
            font-weight: 600;
            color: var(--text-main);
        }

        .comparison-table tr:hover td {
            background-color: #F8FAFC;
        }

        /* 回测数据看板指标 */
        .metric-box {
            text-align: center;
            padding: 25px 15px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .metric-value {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-green);
            line-height: 1.1;
            margin-bottom: 6px;
        }

        .metric-label {
            color: #CBD5E1;
            font-size: 0.9rem;
        }

        /* 常见问题 Accordion 定制 */
        .accordion-custom .accordion-item {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px !important;
            margin-bottom: 14px;
            overflow: hidden;
        }

        .accordion-custom .accordion-button {
            font-weight: 700;
            color: var(--text-main);
            background: #FFFFFF;
            padding: 20px 24px;
            font-size: 1.05rem;
            box-shadow: none;
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            color: var(--primary-green);
            background: rgba(19, 78, 44, 0.04);
            box-shadow: none;
        }

        .accordion-custom .accordion-body {
            padding: 10px 24px 24px;
            color: var(--text-body);
            line-height: 1.8;
        }

        /* 页脚设计 */
        .site-footer {
            background-color: #07130E;
            color: #94A3B8;
            padding: 70px 0 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.92rem;
        }

        .footer-title {
            color: #FFFFFF;
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 20px;
        }

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

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a:hover {
            color: var(--accent-green);
        }

        .footer-bottom {
            margin-top: 50px;
            padding-top: 25px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            text-align: center;
        }

        /* 响应式断点控制 */
        @media (max-width: 991.98px) {
            .hero-section { padding: 60px 0 80px; }
            .section-padding { padding: 60px 0; }
            .comparison-table-wrapper { overflow-x: auto; }
        }

        @media (max-width: 575.98px) {
            .rank-list-item { flex-direction: column; align-items: flex-start; }
            .btn-hero-primary, .btn-hero-secondary { width: 100%; justify-content: center; }
        }