:root{--bg:#f6f7fb;--card:#fff;--text:#1e2430;--muted:#6b7280;--border:#e5e7eb;--accent:#2563eb;--danger:#dc2626}
*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text)}
a{text-decoration:none;color:var(--accent)}
.layout{display:flex;min-height:100vh}.sidebar{width:240px;background:#111827;color:#fff;padding:20px;display:flex;flex-direction:column}.brand{font-size:20px;font-weight:700;margin-bottom:24px}.sidebar nav{display:flex;flex-direction:column;gap:8px}.sidebar nav a{color:#e5e7eb;padding:10px 12px;border-radius:10px}.sidebar nav a:hover{background:#1f2937}.sidebar-footer{margin-top:auto;font-size:14px;color:#cbd5e1;display:flex;flex-direction:column;gap:8px}.content{flex:1;padding:24px}.content-full{max-width:480px;margin:0 auto;padding-top:80px}.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:18px;box-shadow:0 2px 10px rgba(15,23,42,.04)}.grid{display:grid;gap:16px}.cards-4{grid-template-columns:repeat(4,minmax(0,1fr));margin-bottom:16px}.two-col{grid-template-columns:1fr 1fr}.stat .label{color:var(--muted);font-size:14px}.stat .value{font-size:30px;font-weight:700;margin-top:8px}h1{margin:0 0 16px}h2{margin-top:0}.form-card{display:flex;flex-direction:column;gap:12px}label{display:block;margin:10px 0 6px;font-size:14px;color:var(--muted)}input[type=text],input[type=password],input[type=number],select,textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:#fff}textarea{resize:vertical}button,.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:var(--accent);color:#fff;border:none;border-radius:10px;padding:10px 14px;cursor:pointer}.btn.secondary,button.secondary{background:#374151}.btn.small{padding:6px 10px;font-size:13px}.toolbar{margin-bottom:16px}.actions,.actions-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.actions form,.actions-row form{display:inline-block}.preview img{max-width:280px;border-radius:10px;border:1px solid var(--border);margin-top:8px}.alert{padding:12px 14px;border-radius:10px;margin-bottom:12px}.alert.error{background:#fee2e2;color:#991b1b}.login-wrap{display:flex;justify-content:center}.wrap{white-space:pre-wrap;word-break:break-word}table{width:100%;border-collapse:collapse}th,td{padding:10px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}code{background:#eef2ff;padding:2px 6px;border-radius:6px}
@media (max-width: 1100px){.cards-4,.two-col{grid-template-columns:1fr}}@media (max-width: 860px){.sidebar{display:none}.content{padding:16px}}