/* roulang page: index */
:root {
            --primary-navy: #0F172A;
            --secondary-slate: #1E293B;
            --accent-teal: #0D9488;
            --accent-gold: #D97706;
            --bg-body: #F8FAFC;
            --border-light: #E2E8F0;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Inter, system-ui, sans-serif;
            background-color: var(--bg-body);
            color: #334155;
            overflow-x: hidden;
        }
        .scroll-margin-nav {
            scroll-margin-top: 110px;
        }
        .scrollbar-none::-webkit-scrollbar {
            display: none;
        }
        .scrollbar-none {
            -ms-overflow-style: none;
            scrollbar-width: none;
        }
        .chip-link {
            transition: all 0.2s ease-in-out;
            white-space: nowrap;
        }
        .chip-link:hover, .chip-link.active {
            background-color: #0F172A;
            color: #FFFFFF;
            border-color: #0F172A;
        }
        .card-elevate {
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
        }
        .card-elevate:hover {
            transform: translateY(-4px);
            box-shadow: 0 14px 28px -6px rgba(15, 23, 42, 0.08), 0 8px 12px -6px rgba(15, 23, 42, 0.04);
            border-color: #CBD5E1;
        }