/* roulang page: index */
:root {
            --dark-base: #0B1315;
            --light-base: #F8FAFC;
            --accent-green: #00DC82;
            --data-blue: #0284C7;
            --active-gold: #F59E0B;
            --border-light: #E2E8F0;
            --border-dark: #1E293B;
        }
        body {
            background-color: var(--light-base);
            color: #0F172A;
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.75;
            overflow-x: hidden;
        }
        .hero-bg {
            background: linear-gradient(135deg, rgba(11, 19, 21, 0.94) 0%, rgba(11, 19, 21, 0.82) 100%), url('/assets/images/27b4e34ef1088d19.webp') center/cover no-repeat;
        }
        .tech-grid-pattern {
            background-image: radial-gradient(rgba(0, 220, 130, 0.15) 1px, transparent 1px);
            background-size: 24px 24px;
        }
        .glow-box {
            box-shadow: 0 0 25px rgba(0, 220, 130, 0.2);
        }
        .accordion-content {
            transition: max-height 0.3s ease-out, opacity 0.3s ease-out;
            max-height: 0;
            opacity: 0;
            overflow: hidden;
        }
        .accordion-content.active {
            max-height: 400px;
            opacity: 1;
        }