/* roulang page: index */
:root {
            --primary-blue: #1D4ED8;
            --corporate-navy: #0F172A;
            --fintech-cyan: #0284C7;
            --bg-slate: #F8FAFC;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
            background-color: var(--bg-slate);
            color: #334155;
            overflow-x: hidden;
        }
        .section-anchor {
            scroll-margin-top: 88px;
        }
        .glass-header {
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            background-color: rgba(255, 255, 255, 0.94);
        }
        .bento-card {
            background: #ffffff;
            border: 1px solid #e2e8f0;
            box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05), 0 2px 6px -1px rgba(15, 23, 42, 0.03);
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .bento-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 28px -4px rgba(15, 23, 42, 0.1), 0 4px 12px -2px rgba(15, 23, 42, 0.05);
            border-color: #cbd5e1;
        }
        .tab-btn.active {
            color: #1d4ed8;
            border-color: #1d4ed8;
            background-color: #eff6ff;
            font-weight: 600;
        }