/* roulang page: index */
:root {
            --primary: #0F52BA;
            --secondary: #00A86B;
            --accent: #F59E0B;
            --dark: #0F172A;
            --surface: #F8FAFC;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: #1E293B;
            background-color: #F8FAFC;
            overflow-x: hidden;
        }
        .gradient-brand {
            background: linear-gradient(135deg, #0F52BA 0%, #00A86B 100%);
        }
        .text-gradient {
            background: linear-gradient(135deg, #0F52BA 0%, #00A86B 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .card-hover {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 32px -8px rgba(15, 82, 186, 0.12);
        }