:root { --bg:#f6f7f9; --card:#fff; --ink:#16181d; --muted:#667085; --line:#e4e7ec; --accent:#4f46e5; --ok:#15803d; --err:#c62828; }
* { box-sizing:border-box; }
[hidden] { display:none !important; }
body { margin:0; font:14px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; background:var(--bg); color:var(--ink); display:flex; flex-direction:column; min-height:100vh; }
a { color:var(--accent); }
h1 { font-size:22px; margin:0 0 14px; } h2 { font-size:18px; } h3 { font-size:14px; margin:14px 0 10px; }
code { background:#f1f2f6; padding:2px 5px; border-radius:4px; font-size:12px; word-break:break-all; }

header.top { display:flex; align-items:center; gap:16px; padding:12px 24px; background:var(--card); border-bottom:1px solid var(--line); flex-wrap:wrap; }
.brand { font-weight:700; font-size:16px; color:var(--ink); text-decoration:none; }
.logo { color:var(--accent); }
header.top nav { margin-left:auto; display:flex; gap:16px; align-items:center; flex-wrap:wrap; }
header.top nav a { color:var(--muted); text-decoration:none; }
header.top nav a.on { color:var(--ink); font-weight:600; }
.who { padding-left:12px; border-left:1px solid var(--line); }

.page { width:100%; max-width:1180px; margin:0 auto; padding:24px; flex:1; }
footer.foot { text-align:center; padding:16px; color:var(--muted); font-size:12px; border-top:1px solid var(--line); background:var(--card); }

.card { background:var(--card); border:1px solid var(--line); border-radius:12px; padding:18px; min-width:0; }
.card.narrow { max-width:440px; margin:20px auto; }
.card h3:first-child { margin-top:0; }
.two { display:grid; grid-template-columns:minmax(0,1fr) minmax(0,1fr); gap:16px; }
.stats { display:grid; grid-template-columns:repeat(4, minmax(0,1fr)); gap:12px; margin-bottom:16px; }
.stat b { display:block; font-size:26px; margin-top:2px; } .stat b small { font-size:14px; color:var(--muted); font-weight:400; } .stat b.small { font-size:15px; }
.grid4 { display:grid; grid-template-columns:repeat(4, minmax(0,1fr)); gap:12px; }
@media (max-width:900px) { .two { grid-template-columns:minmax(0,1fr); } .stats, .grid4 { grid-template-columns:repeat(2, minmax(0,1fr)); } .hide-sm { display:none !important; } }

button, .btn, input, select, textarea { font:inherit; }
button, .btn { display:inline-block; padding:8px 14px; border-radius:8px; border:1px solid var(--line); background:#fff; cursor:pointer; color:var(--ink); text-decoration:none; }
button.primary, .btn.primary { background:var(--accent); color:#fff; border-color:var(--accent); }
.btn.big { padding:12px 22px; font-size:15px; }
button.danger { color:var(--err); }
input[type=text], input[type=email], input[type=password], input[type=number], select {
  padding:8px 10px; border:1px solid var(--line); border-radius:8px; background:#fff; width:100%; }
input[type=color] { width:100%; height:38px; padding:2px; border:1px solid var(--line); border-radius:8px; background:#fff; }
label.f { display:block; font-size:12px; color:var(--muted); margin:12px 0 4px; }
label.check { display:block; margin-top:12px; }
.row { display:flex; gap:10px; align-items:flex-end; } .row > * { flex:1; } .row.wrap { flex-wrap:wrap; } .row.wrap > * { min-width:150px; }
.meta { color:var(--muted); font-size:12px; }
.ok { color:var(--ok); } .err { color:var(--err); font-size:13px; }
.warn { color:#8a5a00; font-size:12px; background:#fff7e0; padding:8px 10px; border-radius:8px; }
.checks { list-style:none; padding:0; margin:0 0 10px; } .checks li { padding:2px 0; }
.flash { padding:10px 14px; border-radius:8px; margin-bottom:14px; }
.flash.ok { background:#ecf7ee; color:var(--ok); } .flash.error { background:#fdecec; color:var(--err); }
.badge { font-size:11px; padding:1px 7px; border-radius:999px; background:#eef0ff; color:var(--accent); font-weight:600; }
.badge.on { background:#ecf7ee; color:var(--ok); } .badge.off { background:#fdecec; color:var(--err); }

.tabs { display:flex; gap:6px; margin:0 0 16px; flex-wrap:wrap; }
.tabs a { padding:7px 12px; border-radius:8px; text-decoration:none; color:var(--muted); border:1px solid var(--line); background:#fff; }
.tabs a.on { background:var(--ink); color:#fff; border-color:var(--ink); }
.copy { margin:10px 0; } .copy code { display:block; padding:7px 9px; margin-top:3px; user-select:all; font-size:13px; }
.scroll { overflow-x:auto; }
.tbl { width:100%; border-collapse:collapse; } .tbl th, .tbl td { text-align:left; padding:8px 6px; border-top:1px solid var(--line); vertical-align:top; }
.tbl th { font-size:12px; color:var(--muted); font-weight:500; }
tr.dim td { opacity:.55; }
form.inline { display:inline-flex; gap:6px; align-items:center; flex-wrap:wrap; }

.qr-list { display:flex; flex-direction:column; }
.qr-row { display:flex; gap:14px; align-items:center; padding:12px 6px; border-top:1px solid var(--line); color:inherit; text-decoration:none; border-radius:8px; }
.qr-row:first-child { border-top:0; } .qr-row:hover { background:#f8f8fc; }
.qr-row img { border:1px solid var(--line); border-radius:6px; background:#fff; flex:none; }
.grow { flex:1; min-width:0; } .grow .meta { overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.num-col { display:flex; flex-direction:column; align-items:flex-end; min-width:90px; } .num-col b { font-size:18px; }
.qr-card { text-align:center; } .qr-card img { width:260px; height:260px; max-width:100%; border:1px solid var(--line); border-radius:8px; }
.qr-card .copy { text-align:left; }
.btns { display:flex; gap:8px; justify-content:center; flex-wrap:wrap; }

.chart { display:flex; align-items:flex-end; gap:3px; height:140px; padding-top:6px; }
.chart .col { flex:1; height:100%; display:flex; align-items:flex-end; }
.chart .col i { display:block; width:100%; min-height:2px; background:var(--accent); border-radius:3px 3px 0 0; opacity:.85; }
.chart .col:hover i { opacity:1; }
.chart-x { display:flex; justify-content:space-between; font-size:11px; color:var(--muted); margin-top:4px; }
.hbar { display:grid; grid-template-columns:1fr auto; gap:2px 8px; margin:8px 0; font-size:13px; }
.hbar .track { grid-column:1 / -1; height:6px; background:#f0f1f5; border-radius:4px; overflow:hidden; }
.hbar .track i { display:block; height:100%; background:var(--accent); }
.danger-zone form { margin-right:8px; }