/* roulang page: index */
:root {
            --primary: #0A58CA;
            --accent: #00D084;
            --dark: #0F172A;
            --light-bg: #F8FAFC;
        }
        html { scroll-behavior: smooth; }
        body { font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif; }
        .hero-bg {
            background-image: linear-gradient(to right, rgba(15, 23, 42, 0.95), rgba(15, 23, 42, 0.82)), url('/assets/images/508e0ce7f6f0cd21.webp');
            background-size: cover;
            background-position: center;
        }
        .code-container {
            background: #090D14;
            box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.05);
        }
        .transition-base { transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); }