/* roulang page: index */
:root {
            --primary: #0284c7;
            --primary-dark: #0369a1;
            --accent: #0f172a;
            --highlight: #f59e0b;
            --bg-light: #f8fafc;
            --card-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
            color: #334155;
            line-height: 1.75;
            background-color: #ffffff;
            overflow-x: hidden;
        }
        .custom-card {
            box-shadow: var(--card-shadow);
            transition: all 0.3s ease;
        }
        .custom-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 28px -4px rgba(15, 23, 42, 0.1);
        }
        details summary::-webkit-details-marker {
            display: none;
        }