/* roulang page: index */
:root {
            --primary: #0F172A;
            --accent: #6366F1;
            --teal: #14B8A6;
            --bg-light: #F8FAFC;
            --bg-dark: #0B0F19;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-light);
            color: #334155;
            line-height: 1.75;
        }
        .hero-bg {
            background-image: linear-gradient(rgba(11, 15, 25, 0.88), rgba(15, 23, 42, 0.92)), url('/assets/images/07c2017e55ace719.png');
            background-size: cover;
            background-position: center;
        }
        .banner-glow {
            box-shadow: 0 0 35px -5px rgba(99, 102, 241, 0.3);
        }
        .transition-all-200 {
            transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
        }