/* roulang page: index */
:root {
            --primary: #0B3B2C;
            --primary-dark: #061A14;
            --accent: #10B981;
            --accent-glow: rgba(16, 185, 129, 0.15);
            --border-line: rgba(16, 185, 129, 0.18);
            --bg-neutral: #F8FAFC;
            --text-main: #0F172A;
            --text-muted: #475569;
            --shadow-card: 0 12px 32px -8px rgba(11, 59, 44, 0.08);
            --shadow-elevated: 0 20px 40px -12px rgba(11, 59, 44, 0.14);
        }
        
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--text-main);
            background-color: #FFFFFF;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        .section-separator {
            border-bottom: 1px solid rgba(11, 59, 44, 0.06);
        }

        .badge-pill {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            padding: 0.3rem 0.85rem;
            border-radius: 9999px;
            font-size: 0.8125rem;
            font-weight: 600;
            background-color: rgba(16, 185, 129, 0.1);
            color: #0B3B2C;
            border: 1px solid rgba(16, 185, 129, 0.2);
        }

        .card-custom {
            background: #FFFFFF;
            border: 1px solid rgba(11, 59, 44, 0.08);
            border-radius: 1rem;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
        }

        .card-custom:hover {
            transform: translateY(-4px);
            border-color: rgba(16, 185, 129, 0.35);
            box-shadow: var(--shadow-elevated);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.8rem 1.75rem;
            border-radius: 0.625rem;
            background-color: #0B3B2C;
            color: #FFFFFF;
            font-weight: 600;
            font-size: 0.9375rem;
            transition: all 0.25s ease;
            box-shadow: 0 4px 14px rgba(11, 59, 44, 0.2);
            min-height: 44px;
        }

        .btn-primary:hover {
            background-color: #10B981;
            color: #061A14;
            transform: translateY(-1px);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.8rem 1.75rem;
            border-radius: 0.625rem;
            background-color: #F8FAFC;
            color: #0B3B2C;
            font-weight: 600;
            font-size: 0.9375rem;
            border: 1px solid rgba(11, 59, 44, 0.15);
            transition: all 0.25s ease;
            min-height: 44px;
        }

        .btn-secondary:hover {
            background-color: #E2E8F0;
            border-color: #0B3B2C;
        }

        .dark-section {
            background-color: #061A14;
            color: #E2E8F0;
        }

        .glass-panel {
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.6);
        }

        /* FAQ 手风琴动画 */
        details summary::-webkit-details-marker {
            display: none;
        }
        details summary {
            list-style: none;
            cursor: pointer;
        }