/* roulang page: index */
:root {
            --brand-primary: #0D9488;
            --brand-accent: #14B8A6;
            --brand-dark: #0F172A;
            --bg-light: #F8FAFC;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            background-color: #F8FAFC;
            color: #334155;
            line-height: 1.75;
        }
        .hero-pattern {
            background-image: radial-gradient(rgba(20, 184, 166, 0.12) 1px, transparent 1px);
            background-size: 28px 28px;
        }
        .text-glow {
            text-shadow: 0 0 25px rgba(20, 184, 166, 0.4);
        }
        details summary::-webkit-details-marker {
            display: none;
        }