:root{--brand:#1664ff;--bg:#f5f7fb;--card:#ffffff;--text:#1a1d26;--muted:#6b7280;--border:#e5e7eb;--danger:#dc2626;--ok:#059669}*{box-sizing:border-box}body,html{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text)}a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}button,input,select,textarea{font:inherit}.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:20px;box-shadow:0 1px 2px rgba(16,24,40,.04)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:var(--brand);color:#fff;border:none;border-radius:8px;padding:10px 16px;cursor:pointer;font-weight:600}.btn:disabled{opacity:.55;cursor:not-allowed}.btn.secondary{color:var(--text)}.btn.secondary,.input,.textarea{background:#fff;border:1px solid var(--border)}.input,.textarea{width:100%;border-radius:8px;padding:10px 12px}.textarea{min-height:140px;resize:vertical}.label{display:block;margin-bottom:6px}.label,.muted{font-size:13px;color:var(--muted)}.err{color:var(--danger);font-size:13px}.ok{color:var(--ok)}.layout{display:grid;grid-template-columns:220px 1fr;min-height:100vh}.side{background:#0f172a;color:#e2e8f0;padding:24px 16px}.side a{color:#cbd5e1;display:block;padding:10px 12px;border-radius:8px}.side a.active,.side a:hover{background:rgba(22,100,255,.25);color:#fff;text-decoration:none}.brand{font-weight:700;font-size:18px;color:#fff;margin-bottom:24px;padding:0 12px}.main{padding:28px}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.table{width:100%;border-collapse:collapse}.table td,.table th{text-align:left;padding:10px 8px;border-bottom:1px solid var(--border);font-size:14px}.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px;background:#eef2ff;color:#3730a3}