/* roulang page: index */
:root {
            --color-primary: #1E293B;
            --color-accent: #0F766E;
            --color-blue: #0284C7;
            --bg-page: #F8FAFC;
            --font-stack: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }
        body {
            font-family: var(--font-stack);
            background-color: var(--bg-page);
            color: #0F172A;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        .hero-bg-overlay {
            background-image: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(30, 41, 59, 0.88) 100%), url('/assets/images/ab15053a7a874bfe.webp');
            background-size: cover;
            background-position: center;
        }
        .card-elevated {
            background: #FFFFFF;
            border: 1px solid #E2E8F0;
            border-radius: 12px;
            box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 10px 15px -5px rgba(0,0,0,0.02);
            transition: all 0.25s ease-in-out;
        }
        .card-elevated:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px -5px rgba(0,0,0,0.08), 0 8px 10px -6px rgba(0,0,0,0.03);
            border-color: #CBD5E1;
        }
        .section-separator {
            border-bottom: 1px solid #E2E8F0;
        }