/* roulang page: index */
:root {
            --primary: #0F2B48;
            --accent: #008080;
            --accent-hover: #006666;
            --bg-light: #F8FAFC;
            --text-title: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
        }
        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }
        body {
            color: var(--text-body);
            background-color: #FFFFFF;
        }
        .header-glass {
            background-color: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
        }
        .hero-pattern {
            background: linear-gradient(135deg, rgba(15, 43, 72, 0.94) 0%, rgba(10, 25, 47, 0.97) 100%), url('/assets/images/481705337b793426.png') center/cover no-repeat;
        }
        .card-custom {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            border: 1px solid rgba(226, 232, 240, 0.8);
        }
        .card-custom:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 32px -8px rgba(15, 43, 72, 0.08);
            border-color: rgba(0, 128, 128, 0.3);
        }