:root{--bg: #f4f6fb;--card: #ffffff;--ink: #1e293b;--ink-2: #64748b;--line: #e2e8f0;--accent: #2563eb;--accent-2: #1d4ed8;--accent-soft: #eff6ff;--ok: #059669;--warn: #d97706;--danger: #dc2626;--sidebar: #0f172a;--radius: 12px;--shadow: 0 1px 3px rgb(15 23 42 / .06), 0 4px 16px rgb(15 23 42 / .06)}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:system-ui,-apple-system,PingFang SC,Microsoft YaHei,sans-serif;font-size:14px;line-height:1.6}.shell{display:flex;min-height:100vh}.sidebar{width:216px;flex-shrink:0;background:var(--sidebar);color:#cbd5e1;display:flex;flex-direction:column;padding:20px 12px;position:sticky;top:0;height:100vh}.logo{font-size:19px;font-weight:800;color:#fff;padding:4px 12px 18px;letter-spacing:.5px}.logo em{color:#60a5fa;font-style:normal}.logo small{display:block;font-size:11px;font-weight:400;color:#64748b;margin-top:2px}.nav-item{display:flex;align-items:center;gap:10px;padding:10px 12px;margin:2px 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