/* roulang page: index */
:root {
            --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --color-primary: #0ea5e9;
            --color-emerald: #10b981;
            --bg-dark: #0f172a;
        }
        body {
            font-family: var(--font-main);
            line-height: 1.75;
            background-color: #f8fafc;
            color: #334155;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            letter-spacing: -0.02em;
        }
        .hero-pattern {
            background-image: radial-gradient(rgba(14, 165, 233, 0.12) 1px, transparent 1px);
            background-size: 24px 24px;
        }
        .glow-effect {
            box-shadow: 0 0 40px -10px rgba(14, 165, 233, 0.3);
        }