/* roulang page: index */
:root {
            --bg-main: #F8FAFC;
            --text-dark: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --brand-primary: #0284C7;
            --brand-security: #059669;
            --brand-vip: #D97706;
        }
        body {
            background-color: var(--bg-main);
            color: var(--text-body);
            font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            -webkit-font-smoothing: antialiased;
        }
        .custom-card {
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .custom-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 30px -6px rgba(2, 132, 199, 0.12);
        }
        .accordion-content {
            transition: max-height 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
        }