:root{
  --bg:#f5f6f8; --card:#fff; --line:#e5e7eb; --line2:#eef0f3;
  --ink:#171a20; --muted:#6b7280; --accent:#2563eb; --danger:#d92d20;
  --radius:10px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg); color:var(--ink);
  font:14px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;font-size:12.5px}
.muted{color:var(--muted)}
.r{text-align:right}

/* top bar */
.top{
  height:56px;display:flex;align-items:center;gap:28px;
  padding:0 28px;background:var(--card);border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:10;
}
.brand{font-weight:700;letter-spacing:.06em;font-size:15px;display:flex;align-items:center;gap:9px}
.brand span{font-weight:500;letter-spacing:0;color:var(--muted);font-size:13px}
.top nav{display:flex;gap:4px;margin-left:8px}
.top nav a{
  padding:7px 14px;border-radius:8px;color:#4b5563;font-weight:500;
}
.top nav a:hover{background:#f3f4f6;text-decoration:none}
.top nav a.on{background:#eef2ff;color:var(--accent)}
.who{margin-left:auto;display:flex;align-items:center;gap:14px;color:var(--muted);font-size:13px}

.wrap{max-width:1180px;margin:26px auto 60px;padding:0 24px}

/* headings */
.pagehead{display:flex;align-items:center;gap:14px;margin:0 0 18px}
.pagehead h1{font-size:20px;margin:0;font-weight:650;letter-spacing:-.01em}
.pagehead .row{margin-left:auto;display:flex;gap:8px}
.pagehead .muted{margin-left:2px}

.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 20px;margin-bottom:18px;
}
.card.flush{padding:0;overflow:hidden}
.card h2{font-size:14px;font-weight:650;margin:0 0 12px;display:flex;align-items:center;gap:8px}
.card .count{
  font-size:11px;font-weight:600;color:var(--muted);background:#f3f4f6;
  border-radius:20px;padding:1px 9px;
}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:18px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px}
.stat .k{font-size:12px;color:var(--muted)}
.stat .v{font-size:24px;font-weight:650;margin-top:4px;letter-spacing:-.02em}
.stat .v.small{font-size:15px;font-weight:600;padding-top:6px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.grid2 .card{margin-bottom:0}

/* tables */
.tbl{width:100%;border-collapse:collapse;font-size:13.5px}
.tbl th{
  text-align:left;font-size:11.5px;font-weight:600;letter-spacing:.05em;
  color:var(--muted);text-transform:uppercase;
  padding:10px 14px;border-bottom:1px solid var(--line);background:#fafbfc;
}
.tbl td{padding:11px 14px;border-bottom:1px solid var(--line2);vertical-align:middle}
.tbl tbody tr:last-child td{border-bottom:none}
.tbl tbody tr:hover{background:#fbfcfd}
.tbl.tight th,.tbl.tight td{padding:7px 10px;font-size:12.5px;white-space:nowrap}
.tbl .tag{
  display:inline-block;margin-left:7px;font-size:11px;color:var(--muted);
  background:#f3f4f6;border-radius:5px;padding:1px 6px;vertical-align:1px;
}
.pad{padding:18px 20px}
.card.flush .pad{padding:18px 20px;margin:0}

.cat-head{display:flex;align-items:center;padding:14px 20px;border-bottom:1px solid var(--line);background:#fcfcfd}
.cat-head h2{margin:0}
.cat-head form{margin-left:auto}
.cat-block{margin-bottom:16px}

/* key/value */
.kv{display:grid;grid-template-columns:repeat(2,1fr);gap:12px 26px}
.kv.one{grid-template-columns:1fr}
.kv>div{display:flex;gap:12px;align-items:baseline;min-width:0}
.kv span{color:var(--muted);font-size:12.5px;flex:0 0 52px}
.kv b{font-weight:500;overflow-wrap:anywhere}
.kv .wide{grid-column:1/-1}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:32px;padding:0 13px;border:1px solid var(--line);border-radius:7px;
  background:#fff;color:var(--ink);font-size:13px;font-weight:500;cursor:pointer;
  font-family:inherit;white-space:nowrap;
}
.btn:hover{background:#f7f8fa;text-decoration:none}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.primary:hover{background:#1d4ed8}
.btn.danger{color:var(--danger);border-color:#f1c8c4}
.btn.danger:hover{background:#fef3f2}
.btn.tiny{height:26px;padding:0 9px;font-size:12px;border-radius:6px}
.btn.wide{width:100%;height:38px}

/* alerts */
.alert{
  background:#fef3f2;border:1px solid #fecdca;color:#912018;
  padding:10px 14px;border-radius:8px;margin-bottom:16px;font-size:13px;
}
.alert.ok{background:#ecfdf3;border-color:#abefc6;color:#067647}

/* forms */
.form{display:flex;flex-direction:column;gap:14px;max-width:340px}
.form label,.login-card label{display:flex;flex-direction:column;gap:6px;font-size:12.5px;color:var(--muted)}
.form input,.login-card input{
  height:38px;border:1px solid var(--line);border-radius:7px;padding:0 12px;
  font:inherit;font-size:13.5px;color:var(--ink);background:#fff;outline:none;
}
.form input:focus,.login-card input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(37,99,235,.12)}

/* login */
.login-body{display:flex;align-items:center;justify-content:center;min-height:100vh;background:#f0f2f5}
.login-card{
  width:340px;background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:30px 28px;display:flex;flex-direction:column;gap:16px;
  box-shadow:0 8px 30px rgba(16,24,40,.06);
}
.login-brand{font-weight:700;font-size:18px;letter-spacing:.06em;margin-bottom:6px}
.login-brand span{display:block;font-size:12.5px;font-weight:500;letter-spacing:0;color:var(--muted);margin-top:3px}

/* preview */
.code{
  margin:0;padding:16px 18px;background:#0f1115;color:#e6e8ec;border-radius:8px;
  font:12.5px/1.6 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  overflow:auto;max-height:70vh;white-space:pre-wrap;overflow-wrap:anywhere;
}
.media{display:flex;align-items:center;justify-content:center;background:#0f1115;border-radius:8px;padding:10px;min-height:180px}
.media img,.media video{max-width:100%;max-height:70vh;display:block;border-radius:4px}
.fold{margin-top:14px;border-top:1px solid var(--line2);padding-top:12px}
.fold summary{cursor:pointer;font-size:13px;color:var(--muted)}
.tableblock{border-top:1px solid var(--line)}
.tableblock:first-of-type{border-top:none}
.tname{display:flex;align-items:baseline;gap:10px;padding:12px 20px;background:#fafbfc;border-bottom:1px solid var(--line2)}
.scrollx{overflow-x:auto}

@media (max-width:900px){
  .stats{grid-template-columns:repeat(2,1fr)}
  .grid2{grid-template-columns:1fr}
  .kv{grid-template-columns:1fr}
  .top{gap:14px;padding:0 16px}
  .wrap{padding:0 14px;margin-top:18px}
}