/* roulang page: index */
:root {
            --brand-primary: #059669;
            --brand-hover: #047857;
            --brand-indigo: #4F46E5;
            --bg-canvas: #F8FAFC;
            --card-border: rgba(226, 232, 240, 0.8);
        }
        body {
            background-color: var(--bg-canvas);
            color: #1e293b;
            font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            -webkit-font-smoothing: antialiased;
        }
        .text-gradient {
            background: linear-gradient(135deg, #059669 0%, #2563eb 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .card-sheen {
            transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s ease;
        }
        .card-sheen:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 32px -8px rgba(15, 23, 42, 0.08);
        }
        .glass-panel {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
        }