/* roulang page: index */
:root {
            --brand-primary: #0284C7;
            --brand-accent: #10B981;
            --bg-body: #F8FAFC;
            --text-main: #0F172A;
            --text-muted: #475569;
            --border-light: #E2E8F0;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-body);
            color: var(--text-main);
            overflow-x: hidden;
        }
        .hero-mesh {
            background-image: radial-gradient(at 10% 20%, rgba(2, 132, 199, 0.12) 0px, transparent 50%),
                              radial-gradient(at 90% 80%, rgba(16, 185, 129, 0.1) 0px, transparent 50%);
        }
        .glass-card {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
        }
        .code-pattern {
            background-size: 24px 24px;
            background-image: linear-gradient(to right, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
                              linear-gradient(to bottom, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
        }