/* roulang page: index */
:root {
            --primary-blue: #0A58CA;
            --primary-sky: #0284C7;
            --radar-green: #0D9488;
            --warning-amber: #F59E0B;
            --dark-space: #0B1120;
        }
        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }
        .bg-mesh-pattern {
            background-image: radial-gradient(rgba(14, 165, 233, 0.12) 1px, transparent 1px);
            background-size: 24px 24px;
        }
        .hero-bg-overlay {
            background: linear-gradient(135deg, rgba(11, 17, 32, 0.94) 0%, rgba(15, 23, 42, 0.82) 50%, rgba(2, 132, 199, 0.72) 100%), url('/assets/images/66da9331dec7f2fc.webp');
            background-size: cover;
            background-position: center;
        }
        .dark-space-bg {
            background: linear-gradient(180deg, #0B1120 0%, #0F172A 100%), url('/assets/images/bb59f89dd30df16e.webp');
            background-size: cover;
            background-blend-mode: overlay;
        }