/* roulang page: index */
:root {
            --primary: #0A4D68;
            --accent: #088395;
            --highlight: #05BFDB;
            --dark: #051923;
            --bg-light: #F8FAFC;
            --bg-muted: #F1F5F9;
            --text-head: #0F172A;
            --text-body: #334155;
            --text-dim: #64748B;
            --card-shadow: 0 1px 3px rgba(10, 77, 104, 0.06), 0 10px 25px -5px rgba(10, 77, 104, 0.04);
            --card-hover-shadow: 0 12px 32px -4px rgba(10, 77, 104, 0.12), 0 4px 12px -2px rgba(8, 131, 149, 0.08);
        }

        body {
            color: var(--text-body);
            background-color: var(--bg-light);
            font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            text-rendering: optimizeLegibility;
            -webkit-font-smoothing: antialiased;
        }

        .med-shadow {
            box-shadow: var(--card-shadow);
        }
        
        .med-shadow-hover:hover {
            box-shadow: var(--card-hover-shadow);
            transform: translateY(-2px);
        }

        .btn-gradient-primary {
            background: linear-gradient(135deg, #088395 0%, #0A4D68 100%);
            box-shadow: 0 4px 14px rgba(8, 131, 149, 0.25);
            transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .btn-gradient-primary:hover {
            box-shadow: 0 6px 20px rgba(5, 191, 219, 0.4);
            transform: translateY(-1px);
        }

        .btn-outline-med {
            border: 1.5px solid var(--accent);
            color: var(--primary);
            transition: all 0.2s ease;
        }

        .btn-outline-med:hover {
            background-color: rgba(8, 131, 149, 0.08);
            border-color: var(--highlight);
        }

        /* 隐藏滚动条但保留功能 */
        .no-scrollbar::-webkit-scrollbar {
            display: none;
        }
        .no-scrollbar {
            -ms-overflow-style: none;
            scrollbar-width: none;
        }

        /* 手风琴平滑展示 */
        details summary::-webkit-details-marker {
            display: none;
        }