:root{color-scheme:light dark;--bg:#f5f6f8;--card:#ffffff;--text:#16181d;--muted:#6b7280;--border:#e3e5e8;--accent:#2563eb;--accent-hover:#1d4ed8;--danger:#dc2626;--success:#16a34a}@media (prefers-color-scheme:dark){:root{--bg:#0f1115;--card:#171a21;--text:#e7e9ee;--muted:#9aa1ac;--border:#262a33;--accent:#3b82f6;--accent-hover:#60a5fa}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif}a{color:var(--accent)}.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:32px;width:100%;max-width:380px}.card h1{font-size:20px;margin:0 0 20px}.field{margin-bottom:16px}.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}.field input:-moz-read-only{opacity:.6;cursor:not-allowed}.field input:read-only{opacity:.6;cursor:not-allowed}.field input{width:100%;padding:10px 12px;border-radius:8px;border:1px solid var(--border);background:transparent;color:var(--text);font-size:14px}.btn,button{display:inline-block;background:var(--accent);color:#fff;border:none;border-radius:8px;padding:10px 16px;font-size:14px;cursor:pointer;text-decoration:none}.btn:hover,button:hover{background:var(--accent-hover)}.alert{border-radius:8px;padding:10px 14px;font-size:13px;margin-bottom:16px}.alert-error{background:rgba(220,38,38,.1);color:var(--danger)}.alert-success{background:rgba(22,163,74,.1);color:var(--success)}.muted{color:var(--muted);font-size:13px}.admin-shell{display:flex;min-height:100vh}.admin-nav{width:200px;flex-shrink:0;background:var(--card);border-right:1px solid var(--border);padding:20px 0}.admin-nav a{display:block;padding:10px 24px;color:var(--text);text-decoration:none;font-size:14px}.admin-nav a:hover{background:var(--bg)}.admin-main{flex:1 1;padding:32px;max-width:1200px}table{width:100%;border-collapse:collapse;font-size:13px;background:var(--card);border:1px solid var(--border);border-radius:8px;overflow:hidden}td,th{text-align:left;padding:10px 12px;border-bottom:1px solid var(--border);white-space:nowrap}th{color:var(--muted);font-weight:500;background:var(--bg)}.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));grid-gap:16px;gap:16px;margin-bottom:24px}.stat-card{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:18px}.stat-card .value{font-size:28px;font-weight:600}.stat-card .label{color:var(--muted);font-size:13px}.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px}.badge-admin{background:rgba(37,99,235,.15);color:var(--accent)}.badge-user{background:rgba(107,114,128,.15);color:var(--muted)}.badge-ok{background:rgba(22,163,74,.15);color:var(--success)}.badge-warn{background:rgba(220,38,38,.15);color:var(--danger)}.section-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.table-wrap{overflow-x:auto}