/* roulang page: index */
:root {
            --primary: #090A0F;
            --surface: #12141D;
            --accent: #05F29A;
            --text-main: #0F172A;
            --text-muted: #64748B;
            --bg-light: #F8FAFC;
        }
        * {
            box-sizing: border-box;
            -webkit-tap-highlight-color: transparent;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Inter', system-ui, sans-serif;
            background-color: var(--bg-light);
            color: var(--text-main);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        .code-grid {
            background-size: 32px 32px;
            background-image: linear-gradient(to right, rgba(255, 255, 255, 0.04) 1px, transparent 1px),
                              linear-gradient(to bottom, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
        }
        .light-grid {
            background-size: 24px 24px;
            background-image: linear-gradient(to right, rgba(0, 0, 0, 0.03) 1px, transparent 1px),
                              linear-gradient(to bottom, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
        }
        .hover-card {
            transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .hover-card:hover {
            transform: translateY(-2px);
            border-color: #05F29A;
        }