/* roulang page: index */
:root {
            --primary: #102A27;
            --secondary: #2E5B53;
            --accent: #E65C00;
            --surface: #F7F9F8;
            --surface-dark: #0A1715;
            --text-main: #1D2926;
            --text-muted: #5B6B67;
            --border-light: #E2E8E5;
        }
        body {
            font-family: system-ui, -apple-system, 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            color: var(--text-main);
            background-color: #FFFFFF;
            overflow-x: hidden;
            scroll-behavior: smooth;
        }
        .hero-bg {
            background-image: linear-gradient(rgba(16, 42, 39, 0.88), rgba(10, 23, 21, 0.94)), url('/assets/images/670a72b7fc604f47.jpg');
            background-size: cover;
            background-position: center;
        }
        .mesh-card {
            background: #ffffff;
            border: 1px solid var(--border-light);
            transition: all 0.25s ease-out;
        }
        .mesh-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 30px rgba(16, 42, 39, 0.08);
            border-color: #A3C2BB;
        }
        .dark-tech-grid {
            background-image: radial-gradient(rgba(46, 91, 83, 0.25) 1px, transparent 0);
            background-size: 24px 24px;
        }