/* roulang page: index */
:root {
            --primary: #0F766E;
            --primary-hover: #0D9488;
            --accent: #F97316;
            --accent-hover: #EA580C;
            --dark-bg: #0F172A;
            --graphite: #1E293B;
            --surface: #FFFFFF;
            --bg-light: #F8FAFC;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
            background-color: var(--bg-light);
            color: #334155;
            line-height: 1.75;
        }
        .hero-overlay {
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(15, 118, 110, 0.85) 100%);
        }
        .text-gradient {
            background: linear-gradient(90deg, #F97316, #FDE047);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }