/* roulang page: index */
:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --secondary: #06b6d4;
            --accent: #10b981;
            --bg-main: #f8fafc;
            --text-title: #0f172a;
            --text-body: #334155;
            --text-muted: #64748b;
        }
        * {
            box-sizing: border-box;
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-main);
            color: var(--text-body);
            overflow-x: hidden;
            line-height: 1.75;
        }
        .hero-video-bg {
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(30, 58, 138, 0.88) 100%), url('/assets/images/daa65e2c140cb0fa.png') center/cover no-repeat;
        }
        .glass-card {
            background: rgba(255, 255, 255, 0.82);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(226, 232, 240, 0.8);
        }
        .glow-border:hover {
            box-shadow: 0 10px 25px -5px rgba(37, 99, 235, 0.2), 0 8px 10px -6px rgba(37, 99, 235, 0.2);
        }