/* roulang page: index */
:root {
            --primary: #0A5C36;
            --primary-hover: #0E7043;
            --signal-lime: #84CC16;
            --text-dark: #020617;
            --text-body: #334155;
            --text-muted: #64748B;
            --border-line: #E2E8F0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            color: var(--text-body);
            background-color: #F8FAFC;
        }
        .container-custom {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        .mono-num {
            font-family: 'Roboto Mono', monospace;
            font-variant-numeric: tabular-nums;
        }
        .subtle-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-line);
            border-radius: 8px;
            transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease;
        }
        .subtle-card:hover {
            transform: translateY(-2px);
            border-color: #CBD5E1;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
        }
        .dark-card {
            background-color: #162032;
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 8px;
            transition: transform 200ms ease, border-color 200ms ease;
        }
        .dark-card:hover {
            transform: translateY(-2px);
            border-color: rgba(132, 204, 22, 0.4);
        }
        details summary::-webkit-details-marker {
            display: none;
        }