:root{--brand: #2563eb;--brand-strong: #1d4ed8;--brand-soft: #eff6ff;--navy-900: #0f172a;--navy-800: #16233f;--navy-700: #1e293b;--navy-line: #2b3a55;--bg: #f4f6fa;--card: #ffffff;--ink: #1e2a3a;--sub: #64748b;--line: #e5eaf2;--grey: #f8fafc;--red: #dc2626;--green: #16a34a;--amber: #d97706;--violet: #7c3aed;--teal: #0d9488;--radius: 12px;--radius-sm: 8px;--shadow-sm: 0 1px 2px rgba(15, 23, 42, .05);--shadow: 0 4px 16px rgba(15, 23, 42, .07);--shadow-lg: 0 12px 40px rgba(15, 23, 42, .14);--font: "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;--num: "SF Mono", "JetBrains Mono", Consolas, "Courier New", monospace}*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:var(--font);background:var(--bg);color:var(--ink);font-size:14px;line-height:1.6;-webkit-font-smoothing:antialiased}.card{background:var(--card);border:1px solid 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