/* roulang page: index */
:root {
            --tx-bg-body: #0b0f19;
            --tx-bg-surface: #111827;
            --tx-bg-card: #151f32;
            --tx-bg-card-hover: #1c2942;
            --tx-primary: #f59e0b;
            --tx-primary-hover: #d97706;
            --tx-primary-glow: rgba(245, 158, 11, 0.25);
            --tx-secondary: #0ea5e9;
            --tx-accent-purple: #8b5cf6;
            --tx-text-primary: #f8fafc;
            --tx-text-secondary: #94a3b8;
            --tx-text-muted: #64748b;
            --tx-border: #1e293b;
            --tx-border-highlight: #334155;
            --tx-radius-sm: 6px;
            --tx-radius-md: 12px;
            --tx-radius-lg: 18px;
            --tx-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
            --tx-shadow-glow: 0 0 25px rgba(245, 158, 11, 0.15);
            --tx-transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        body {
            background-color: var(--tx-bg-body);
            color: var(--tx-text-primary);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            line-height: 1.65;
            overflow-x: hidden;
        }

        /* 顶部导航 */
        .site-header {
            background: rgba(11, 15, 25, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--tx-border);
            position: sticky;
            top: 0;
            z-index: 1050;
            padding: 14px 0;
        }
        .navbar-brand-custom {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--tx-text-primary);
            text-decoration: none;
            font-size: 1.45rem;
            font-weight: 800;
            letter-spacing: -0.5px;
        }
        .navbar-brand-custom i {
            color: var(--tx-primary);
            font-size: 1.6rem;
            filter: drop-shadow(0 0 8px var(--tx-primary-glow));
        }
        .navbar-nav .nav-link {
            color: var(--tx-text-secondary);
            font-size: 0.98rem;
            font-weight: 500;
            padding: 8px 18px;
            transition: var(--tx-transition);
        }
        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link.active {
            color: var(--tx-text-primary);
        }
        .header-cta-btn {
            background: linear-gradient(135deg, var(--tx-primary), #d97706);
            color: #0b0f19;
            font-weight: 700;
            font-size: 0.9rem;
            padding: 9px 22px;
            border-radius: 50px;
            border: none;
            box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
            transition: var(--tx-transition);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .header-cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(245, 158, 11, 0.45);
            color: #0b0f19;
        }

        /* 通用板块样式 */
        .content-section {
            padding: 85px 0;
            position: relative;
            border-bottom: 1px solid var(--tx-border);
        }
        .section-alt {
            background-color: var(--tx-bg-surface);
        }
        .section-header {
            margin-bottom: 50px;
        }
        .section-tag {
            display: inline-block;
            background: rgba(245, 158, 11, 0.12);
            color: var(--tx-primary);
            border: 1px solid rgba(245, 158, 11, 0.3);
            font-size: 0.82rem;
            font-weight: 700;
            text-transform: uppercase;
            padding: 4px 14px;
            border-radius: 50px;
            margin-bottom: 15px;
            letter-spacing: 0.5px;
        }
        .section-title {
            font-size: 2.1rem;
            font-weight: 800;
            color: var(--tx-text-primary);
            letter-spacing: -0.5px;
            margin-bottom: 15px;
        }
        .section-desc {
            color: var(--tx-text-secondary);
            font-size: 1.05rem;
            max-width: 780px;
            margin: 0 auto;
        }

        /* 基础卡片系统 */
        .tx-card {
            background: var(--tx-bg-card);
            border: 1px solid var(--tx-border);
            border-radius: var(--tx-radius-md);
            padding: 30px;
            height: 100%;
            transition: var(--tx-transition);
            position: relative;
        }
        .tx-card:hover {
            transform: translateY(-4px);
            border-color: var(--tx-border-highlight);
            background: var(--tx-bg-card-hover);
            box-shadow: var(--tx-shadow);
        }
        .card-icon-wrap {
            width: 54px;
            height: 54px;
            border-radius: 12px;
            background: rgba(245, 158, 11, 0.1);
            color: var(--tx-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 22px;
            border: 1px solid rgba(245, 158, 11, 0.2);
        }

        /* Hero 样式：深色信息面板 + 右侧 faux 数据榜单 */
        .hero-section {
            padding: 90px 0 100px;
            background: radial-gradient(circle at 80% 20%, rgba(245, 158, 11, 0.08) 0%, transparent 50%),
                        radial-gradient(circle at 20% 80%, rgba(14, 165, 233, 0.06) 0%, transparent 40%),
                        var(--tx-bg-body);
            border-bottom: 1px solid var(--tx-border);
        }
        .hero-badge-pill {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--tx-border-highlight);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--tx-secondary);
            margin-bottom: 25px;
        }
        .hero-title {
            font-size: 2.85rem;
            font-weight: 900;
            line-height: 1.25;
            color: #ffffff;
            margin-bottom: 22px;
            letter-spacing: -0.8px;
        }
        .hero-lead {
            font-size: 1.15rem;
            color: var(--tx-text-secondary);
            line-height: 1.8;
            margin-bottom: 35px;
        }
        .hero-btn-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 35px;
        }
        .btn-gold {
            background: linear-gradient(135deg, var(--tx-primary), #d97706);
            color: #0b0f19;
            font-weight: 700;
            padding: 13px 32px;
            border-radius: var(--tx-radius-sm);
            border: none;
            transition: var(--tx-transition);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn-gold:hover {
            color: #0b0f19;
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(245, 158, 11, 0.35);
        }
        .btn-outline-custom {
            background: transparent;
            color: var(--tx-text-primary);
            border: 1px solid var(--tx-border-highlight);
            padding: 13px 26px;
            border-radius: var(--tx-radius-sm);
            font-weight: 600;
            transition: var(--tx-transition);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline-custom:hover {
            background: rgba(255, 255, 255, 0.05);
            color: #fff;
            border-color: var(--tx-text-secondary);
        }
        .hero-trust-row {
            display: flex;
            align-items: center;
            gap: 25px;
            color: var(--tx-text-muted);
            font-size: 0.88rem;
        }
        .hero-trust-item {
            display: flex;
            align-items: center;
            gap: 7px;
        }
        .hero-trust-item i {
            color: var(--tx-primary);
        }

        /* 右侧 Faux 数据榜单 */
        .rank-panel {
            background: var(--tx-bg-surface);
            border: 1px solid var(--tx-border-highlight);
            border-radius: var(--tx-radius-lg);
            padding: 24px;
            box-shadow: var(--tx-shadow);
            position: relative;
        }
        .rank-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid var(--tx-border);
            padding-bottom: 15px;
            margin-bottom: 16px;
        }
        .rank-header h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin: 0;
            color: var(--tx-text-primary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .rank-badge {
            background: rgba(14, 165, 233, 0.15);
            color: var(--tx-secondary);
            font-size: 0.75rem;
            padding: 3px 10px;
            border-radius: 30px;
            font-weight: 600;
        }
        .rank-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 14px;
            border-radius: 8px;
            margin-bottom: 8px;
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid transparent;
            transition: var(--tx-transition);
        }
        .rank-item:hover {
            background: rgba(255, 255, 255, 0.05);
            border-color: rgba(245, 158, 11, 0.3);
        }
        .rank-index {
            width: 24px;
            height: 24px;
            border-radius: 6px;
            background: #1e293b;
            color: var(--tx-text-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            font-weight: 700;
            margin-right: 12px;
        }
        .rank-index.top-1 { background: #f59e0b; color: #000; }
        .rank-index.top-2 { background: #94a3b8; color: #000; }
        .rank-index.top-3 { background: #b45309; color: #fff; }
        .rank-author-name {
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--tx-text-primary);
            margin-bottom: 2px;
        }
        .rank-category {
            font-size: 0.78rem;
            color: var(--tx-text-muted);
        }
        .rank-stat {
            text-align: right;
        }
        .rank-stat-val {
            font-size: 0.95rem;
            font-weight: 700;
            color: #10b981;
        }
        .rank-stat-sub {
            font-size: 0.75rem;
            color: var(--tx-text-muted);
        }

        /* 指标数字卡片 */
        .metric-card {
            background: var(--tx-bg-card);
            border: 1px solid var(--tx-border);
            border-radius: var(--tx-radius-md);
            padding: 24px;
            text-align: center;
        }
        .metric-num {
            font-size: 2.3rem;
            font-weight: 800;
            color: var(--tx-primary);
            margin-bottom: 6px;
            letter-spacing: -1px;
        }
        .metric-label {
            color: var(--tx-text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
        }

        /* 佣金比例梯队展示 */
        .tier-card {
            background: var(--tx-bg-card);
            border: 1px solid var(--tx-border);
            border-radius: var(--tx-radius-md);
            padding: 30px;
            text-align: center;
            position: relative;
            transition: var(--tx-transition);
        }
        .tier-card.featured {
            border-color: var(--tx-primary);
            box-shadow: 0 0 20px rgba(245, 158, 11, 0.15);
        }
        .tier-badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--tx-primary);
            color: #0b0f19;
            font-size: 0.75rem;
            font-weight: 800;
            padding: 3px 14px;
            border-radius: 20px;
        }
        .tier-rate {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--tx-text-primary);
            margin: 15px 0 10px;
        }
        .tier-rate span {
            font-size: 1.2rem;
            color: var(--tx-primary);
        }

        /* 表格对比系统 */
        .compare-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            background: var(--tx-bg-card);
            border: 1px solid var(--tx-border);
            border-radius: var(--tx-radius-md);
            overflow: hidden;
        }
        .compare-table th, 
        .compare-table td {
            padding: 18px 22px;
            border-bottom: 1px solid var(--tx-border);
            font-size: 0.95rem;
        }
        .compare-table th {
            background: rgba(255, 255, 255, 0.03);
            color: var(--tx-text-secondary);
            font-weight: 600;
        }
        .compare-table tr:last-child td {
            border-bottom: none;
        }
        .compare-table .highlight-col {
            background: rgba(245, 158, 11, 0.04);
            color: var(--tx-primary);
            font-weight: 700;
        }

        /* 时间线样式 */
        .timeline-box {
            position: relative;
            padding-left: 30px;
        }
        .timeline-box::before {
            content: '';
            position: absolute;
            left: 7px;
            top: 5px;
            bottom: 5px;
            width: 2px;
            background: var(--tx-border-highlight);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 30px;
        }
        .timeline-dot {
            position: absolute;
            left: -30px;
            top: 4px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--tx-primary);
            border: 3px solid var(--tx-bg-body);
        }

        /* 案例精选卡 */
        .case-card {
            background: var(--tx-bg-card);
            border: 1px solid var(--tx-border);
            border-radius: var(--tx-radius-md);
            padding: 24px;
            height: 100%;
        }
        .case-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: #1e293b;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--tx-primary);
            border: 1px solid var(--tx-border-highlight);
        }

        /* 资讯列表项 */
        .news-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            background: var(--tx-bg-card);
            border: 1px solid var(--tx-border);
            border-radius: var(--tx-radius-sm);
            margin-bottom: 12px;
            transition: var(--tx-transition);
        }
        .news-row:hover {
            border-color: var(--tx-border-highlight);
            transform: translateX(4px);
        }
        .news-tag {
            background: rgba(255, 255, 255, 0.05);
            color: var(--tx-secondary);
            font-size: 0.78rem;
            padding: 3px 10px;
            border-radius: 4px;
            margin-right: 12px;
            font-weight: 600;
        }

        /* 表单区域 */
        .form-panel {
            background: var(--tx-bg-card);
            border: 1px solid var(--tx-border-highlight);
            border-radius: var(--tx-radius-lg);
            padding: 40px;
            box-shadow: var(--tx-shadow);
        }
        .form-control-custom {
            background: #0f1624;
            border: 1px solid var(--tx-border);
            color: var(--tx-text-primary);
            border-radius: var(--tx-radius-sm);
            padding: 12px 16px;
            font-size: 0.95rem;
            transition: var(--tx-transition);
        }
        .form-control-custom:focus {
            background: #131b2c;
            border-color: var(--tx-primary);
            color: #fff;
            box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
            outline: none;
        }

        /* FAQ 手风琴样式微调 */
        .accordion-item {
            background-color: var(--tx-bg-card);
            border: 1px solid var(--tx-border);
            margin-bottom: 12px;
            border-radius: var(--tx-radius-sm) !important;
            overflow: hidden;
        }
        .accordion-button {
            background-color: var(--tx-bg-card);
            color: var(--tx-text-primary);
            font-weight: 600;
            padding: 20px;
            box-shadow: none !important;
        }
        .accordion-button:not(.collapsed) {
            background-color: rgba(245, 158, 11, 0.05);
            color: var(--tx-primary);
        }
        .accordion-button::after {
            filter: invert(1);
        }
        .accordion-body {
            background-color: var(--tx-bg-card);
            color: var(--tx-text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            padding: 20px;
            border-top: 1px solid var(--tx-border);
        }

        /* 页脚 */
        .site-footer {
            background: #060911;
            padding: 60px 0 30px;
            border-top: 1px solid var(--tx-border);
            color: var(--tx-text-muted);
            font-size: 0.9rem;
        }
        .footer-brand {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--tx-text-primary);
            margin-bottom: 15px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
        }
        .footer-brand i {
            color: var(--tx-primary);
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: var(--tx-text-secondary);
            text-decoration: none;
            transition: var(--tx-transition);
        }
        .footer-links a:hover {
            color: var(--tx-primary);
        }
        .footer-bottom {
            margin-top: 45px;
            padding-top: 25px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        @media (max-width: 991px) {
            .hero-title {
                font-size: 2.2rem;
            }
            .content-section {
                padding: 65px 0;
            }
            .rank-panel {
                margin-top: 40px;
            }
        }
        @media (max-width: 767px) {
            .hero-title {
                font-size: 1.85rem;
            }
            .hero-lead {
                font-size: 1rem;
            }
            .section-title {
                font-size: 1.65rem;
            }
            .form-panel {
                padding: 25px;
            }
        }