/* roulang page: index */
:root {
            --color-primary: #1D4ED8;
            --color-accent: #0EA5E9;
            --color-bg: #F8FAFC;
            --color-text: #0F172A;
            --color-muted: #64748B;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--color-bg);
            color: var(--color-text);
            overflow-x: hidden;
        }
        .hero-overlay {
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.88) 0%, rgba(30, 58, 138, 0.75) 100%);
        }
        .card-elevated {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-elevated:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 10px 10px -5px rgba(15, 23, 42, 0.04);
        }
        .badge-cyan {
            background-color: #E0F2FE;
            color: #0369A1;
        }