/* roulang page: index */
:root {
            --primary: #0B131A;
            --secondary: #1E293B;
            --accent: #059669;
            --accent-glow: #10B981;
            --bg-light: #F8FAFC;
            --bg-alt: #F1F5F9;
            --border-light: rgba(226, 232, 240, 0.9);
            --border-dark: rgba(255, 255, 255, 0.08);
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-light);
            color: #1E293B;
            line-height: 1.6;
        }
        .hero-headline {
            letter-spacing: -0.025em;
            line-height: 1.18;
        }
        .glass-card {
            background: rgba(255, 255, 255, 0.96);
            border: 1px solid var(--border-light);
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .glass-card:hover {
            transform: translateY(-2px);
            border-color: rgba(5, 150, 105, 0.3);
            box-shadow: 0 12px 24px -10px rgba(11, 19, 26, 0.08);
        }
        .dark-glass {
            background: rgba(15, 23, 42, 0.7);
            border: 1px solid var(--border-dark);
            backdrop-filter: blur(8px);
        }
        .cta-btn {
            background: linear-gradient(135deg, #059669 0%, #10B981 100%);
            transition: all 0.25s ease;
        }
        .cta-btn:hover {
            opacity: 0.92;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px -4px rgba(16, 185, 129, 0.4);
        }
        details summary::-webkit-details-marker {
            display: none;
        }