/* roulang page: index */
:root {
            --color-primary: #0A2540;
            --color-accent: #00D4B2;
            --color-geek: #3A6FF8;
            --color-bg-dark: #070A0F;
            --color-bg-light: #F8FAFC;
        }
        html { scroll-behavior: smooth; }
        body {
            font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: #334155;
            background-color: #FFFFFF;
            line-height: 1.7;
        }
        .data-glow {
            box-shadow: 0 0 25px -5px rgba(0, 212, 178, 0.25);
        }
        .hero-bg {
            background-image: linear-gradient(to right, rgba(10, 37, 64, 0.95), rgba(7, 10, 15, 0.88)), url('/assets/images/9f4fcde84af92ef7.webp');
            background-size: cover;
            background-position: center;
        }
        .section-dark-bg {
            background-image: linear-gradient(to bottom, rgba(7, 10, 15, 0.97), rgba(10, 37, 64, 0.95)), url('/assets/images/bc8ca5b0e67c5cc3.webp');
            background-size: cover;
            background-position: center;
        }