/* roulang page: index */
:root {
            --primary: #0A5C66;
            --accent: #D97706;
            --dark: #0F172A;
            --bg-light: #F8FAFC;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: #1E293B;
            line-height: 1.75;
            background-color: var(--bg-light);
        }
        .hero-bg {
            background-image: linear-gradient(to right, rgba(15, 23, 42, 0.95), rgba(10, 92, 102, 0.88)), url('/assets/images/bea283a790ed3e86.png');
            background-size: cover;
            background-position: center;
        }
        .tech-pattern {
            background-image: radial-gradient(#0A5C66 1px, transparent 1px);
            background-size: 24px 24px;
        }
        details summary::-webkit-details-marker {
            display:none;
        }