/* roulang page: index */
:root {
            --primary: #1D4ED8;
            --primary-hover: #1e40af;
            --accent: #0D9488;
            --text-main: #1E293B;
            --text-muted: #64748B;
            --bg-light: #F8FAFC;
            --border-color: #E2E8F0;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--text-main);
            background-color: #FFFFFF;
            overflow-x: hidden;
        }
        .custom-card-shadow {
            box-shadow: 0 10px 30px -5px rgba(15, 23, 42, 0.05), 0 4px 6px -2px rgba(15, 23, 42, 0.02);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .custom-card-shadow:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 35px -5px rgba(29, 78, 216, 0.1), 0 10px 10px -5px rgba(15, 23, 42, 0.04);
            border-color: rgba(59, 130, 246, 0.35);
        }
        details > summary {
            list-style: none;
        }
        details > summary::-webkit-details-marker {
            display: none;
        }
        details[open] summary svg {
            transform: rotate(90deg);
        }