/* roulang page: index */
:root {
            --primary-dark: #0D1117;
            --primary-slate: #161B22;
            --accent-glow: linear-gradient(135deg, #0EA5E9 0%, #10B981 100%);
            --transition-smooth: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: #334155;
            background-color: #F8FAFC;
            overflow-x: hidden;
        }
        .text-gradient {
            background: linear-gradient(135deg, #0EA5E9 0%, #10B981 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .btn-glow {
            background: linear-gradient(135deg, #0EA5E9 0%, #10B981 100%);
            transition: var(--transition-smooth);
        }
        .btn-glow:hover {
            box-shadow: 0 10px 25px -5px rgba(14, 165, 233, 0.45);
            transform: translateY(-2px);
        }
        .card-hover {
            transition: var(--transition-smooth);
        }
        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 30px -10px rgba(15, 23, 42, 0.08);
        }
        .hide-scrollbar::-webkit-scrollbar {
            display: none;
        }
        .hide-scrollbar {
            -ms-overflow-style: none;
            scrollbar-width: none;
        }