:root{--bg:#f7f8fa;--fg:#1b1f24;--muted:#5a6572;--card:#fff;--line:#d5dae1;--accent:#0b57d0;--ok:#146c2e;--warn:#8a5a00;--bad:#b3261e;--demo:#fff3cd}
@media (prefers-color-scheme:dark){:root{--bg:#14171b;--fg:#e8eaed;--muted:#a3adb8;--card:#1e2329;--line:#343b44;--accent:#8ab4f8;--ok:#7ddc8f;--warn:#f2c36b;--bad:#ff8a80;--demo:#4a3f12}}
*{box-sizing:border-box}body{margin:0;font:15px/1.5 system-ui,sans-serif;background:var(--bg);color:var(--fg)}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:var(--card);padding:8px;z-index:10}
.top{display:flex;gap:12px;align-items:center;padding:8px 16px;background:var(--card);border-bottom:1px solid var(--line);flex-wrap:wrap;position:sticky;top:0;z-index:5}
#nav{display:flex;gap:4px;flex-wrap:wrap}#nav a{padding:6px 10px;border-radius:6px;color:var(--fg);text-decoration:none}
#nav a[aria-current=page]{background:var(--accent);color:#fff}#nav a:hover{text-decoration:underline}.spacer{flex:1}
main{max-width:1180px;margin:0 auto;padding:16px}h1{font-size:22px;margin:.2em 0 .6em}h2{font-size:17px;margin:1.2em 0 .5em}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:14px;margin:0 0 14px}
.grid{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(210px,1fr))}.kpi{font-size:24px;font-weight:600}.muted{color:var(--muted)}
table{border-collapse:collapse;width:100%}th,td{border-bottom:1px solid var(--line);padding:6px 8px;text-align:left;vertical-align:top}th{font-weight:600;color:var(--muted)}
.table-wrap{overflow-x:auto}
.btn{font:inherit;padding:6px 12px;border:1px solid var(--line);border-radius:6px;background:var(--card);color:var(--fg);cursor:pointer}
.btn.primary{background:var(--accent);color:#fff;border-color:var(--accent)}.btn.danger{border-color:var(--bad);color:var(--bad)}.btn[aria-pressed=true]{background:var(--bad);color:#fff}
.btn:disabled{opacity:.5;cursor:not-allowed}:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
label{display:block;font-weight:600;margin:10px 0 3px}input,select,textarea{font:inherit;width:100%;padding:6px 8px;border:1px solid var(--line);border-radius:6px;background:var(--card);color:var(--fg)}
textarea{min-height:90px;font-family:ui-monospace,monospace}.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.row>*{flex:0 0 auto}
.pill{display:inline-block;padding:1px 8px;border-radius:99px;font-size:12px;border:1px solid var(--line)}
.ok{color:var(--ok)}.warn{color:var(--warn)}.bad{color:var(--bad)}.pill.ok{border-color:var(--ok)}.pill.bad{border-color:var(--bad)}.pill.warn{border-color:var(--warn)}
#banner .demo{background:var(--demo);padding:6px 16px;text-align:center;font-weight:600}
#toasts{position:fixed;right:12px;bottom:12px;display:grid;gap:6px;z-index:20}.toast{background:var(--fg);color:var(--bg);padding:8px 12px;border-radius:6px;max-width:420px}.toast.err{background:var(--bad);color:#fff}
pre.diff{background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:8px;overflow:auto;max-height:340px;font-size:12px;white-space:pre-wrap}
.diff .add{color:var(--ok)}.diff .del{color:var(--bad)}iframe.preview{width:100%;height:340px;border:1px solid var(--line);background:#fff;border-radius:6px}
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:10px}.tabs button[aria-selected=true]{background:var(--accent);color:#fff}
.steps{counter-reset:s;display:flex;gap:6px;flex-wrap:wrap;margin-bottom:12px}.steps button{counter-increment:s}.steps button::before{content:counter(s) ". "}
svg.chart{width:100%;height:200px}svg.chart .l1{stroke:var(--accent);fill:none;stroke-width:2}svg.chart .l2{stroke:var(--warn);fill:none;stroke-width:1.5;stroke-dasharray:4 3}
.login{max-width:360px;margin:60px auto}
@media (max-width:640px){main{padding:10px}.top{padding:8px}}