/* roulang page: index */
:root {
            --primary: #0F766E;
            --accent: #10B981;
            --text-main: #1E293B;
            --text-muted: #64748B;
            --bg-light: #F8FAFC;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--text-main);
            background-color: var(--bg-light);
            line-height: 1.65;
            overflow-x: hidden;
        }
        .section-header-pill {
            display: inline-flex;
            align-items: center;
            padding: 0.25rem 0.85rem;
            border-radius: 9999px;
            font-size: 0.85rem;
            font-weight: 600;
            background-color: #CCFBF1;
            color: #0F766E;
            margin-bottom: 0.75rem;
        }
        .interactive-card {
            transition: all 0.28s ease;
        }
        .interactive-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 15px 30px -8px rgba(15, 118, 110, 0.12);
        }
        details summary::-webkit-details-marker {
            display:none;
        }
        details summary {
            list-style: none;
        }