/* roulang page: index */
:root {
            --primary: #4F46E5;
            --primary-dark: #3730A3;
            --accent-cyan: #06B6D4;
            --accent-emerald: #10B981;
            --bg-light: #F8FAFC;
            --text-main: #0F172A;
            --text-muted: #475569;
            --card-radius: 24px;
            --shadow-subtle: 0 10px 30px -5px rgba(0,0,0,0.05);
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-light);
            color: var(--text-main);
            overflow-x: hidden;
        }
        .gradient-brand {
            background: linear-gradient(135deg, #4F46E5 0%, #7C3AED 100%);
        }
        .gradient-dark {
            background: linear-gradient(180deg, #0F172A 0%, #1E293B 100%);
        }
        .text-gradient {
            background: linear-gradient(135deg, #4F46E5 0%, #06B6D4 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .badge-pill {
            display: inline-flex;
            align-items: center;
            border-radius: 9999px;
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 600;
        }
        .card-modern {
            border-radius: var(--card-radius);
            box-shadow: var(--shadow-subtle);
            border: 1px solid rgba(226, 232, 240, 0.8);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-modern:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 35px -5px rgba(79, 70, 229, 0.12);
            border-color: rgba(99, 102, 241, 0.3);
        }
        .interactive-scale {
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }
        .interactive-scale:hover {
            transform: translateY(-2px);
        }