/* roulang page: index */
:root {
            --primary: #1A56DB;
            --primary-hover: #1E40AF;
            --accent: #0284C7;
            --amber-gold: #D97706;
            --bg-light: #F8FAFC;
            --bg-white: #FFFFFF;
            --text-heading: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border-color: #E2E8F0;
        }

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

        .card-shadow {
            box-shadow: 0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .card-shadow:hover {
            box-shadow: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.08);
            transform: translateY(-4px);
        }

        details summary::-webkit-details-marker {
            display: none;
        }