/* roulang page: index */
:root {
            --primary: #0B132B;
            --primary-surface: #1C2541;
            --accent: #FF5A36;
            --accent-green: #00EB96;
            --bg-light: #F8FAFC;
            --border-color: #E2E8F0;
        }
        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }
        .text-accent { color: var(--accent); }
        .text-glow { color: var(--accent-green); }
        .bg-primary { background-color: var(--primary); }
        .bg-surface { background-color: var(--primary-surface); }
        .bg-accent { background-color: var(--accent); }
        .border-theme { border-color: var(--border-color); }
        .trans-lift {
            transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.2s ease;
        }
        .trans-lift:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
        }