/* roulang page: index */
:root {
            --primary: #4F46E5;
            --primary-hover: #4338CA;
            --secondary: #06B6D4;
            --dark: #0F172A;
            --slate-border: #E2E8F0;
            --bg-light: #F8FAFC;
        }
        html {
            scroll-behavior: smooth;
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
        }
        body {
            color: #334155;
            background-color: #FFFFFF;
            line-height: 1.75;
            overflow-x: hidden;
        }
        .hero-pattern {
            background-image: linear-gradient(135deg, rgba(15, 23, 42, 0.94) 0%, rgba(30, 27, 75, 0.88) 100%), url('/assets/images/1ce2162bf5293adb.png');
            background-size: cover;
            background-position: center;
        }
        .glass-panel {
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.12);
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.25rem 0.875rem;
            background: #EEF2FF;
            color: #4F46E5;
            font-size: 0.875rem;
            font-weight: 600;
            border-radius: 9999px;
            border: 1px solid #E0E7FF;
        }
        .card-hover {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 25px -5px rgba(79, 70, 229, 0.12), 0 8px 10px -6px rgba(79, 70, 229, 0.08);
            border-color: #C7D2FE;
        }
        .custom-scrollbar::-webkit-scrollbar {
            height: 6px;
            width: 6px;
        }
        .custom-scrollbar::-webkit-scrollbar-thumb {
            background: #CBD5E1;
            border-radius: 4px;
        }