:root{--bg:#f6f7f9;--fg:#1c1e21;--muted:#5f6670;--card:#fff;--line:#d9dde3;--accent:#1f5fbf;--danger:#b3261e;--ok:#1b7f3b}
*{box-sizing:border-box}body{margin:0;font:15px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--fg)}
a{color:var(--accent)}header.top{background:var(--card);border-bottom:1px solid var(--line);padding:.6rem 1.2rem;display:flex;gap:1.2rem;align-items:center;flex-wrap:wrap}
header.top .brand{font-weight:600;text-decoration:none;color:var(--fg)}header.top nav{display:flex;gap:1rem;flex-wrap:wrap;margin-left:auto;align-items:center}
main{max-width:960px;margin:2rem auto;padding:0 1rem}main.narrow{max-width:420px}
.card{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:1.4rem;margin-bottom:1.2rem}
h1{font-size:1.4rem;margin:0 0 1rem}h2{font-size:1.1rem;margin:1.2rem 0 .6rem}
label{display:block;font-weight:500;margin:.8rem 0 .25rem}input[type=text],input[type=password],input[type=email],input[type=url],textarea,select{width:100%;padding:.55rem .7rem;border:1px solid var(--line);border-radius:6px;font:inherit;background:#fff}
input:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:1px}textarea{min-height:5rem;font-family:ui-monospace,monospace}
.check{display:flex;gap:.5rem;align-items:center;margin:.6rem 0;font-weight:400}.check input{width:auto}
button,.btn{display:inline-block;padding:.55rem 1rem;border-radius:6px;border:1px solid var(--accent);background:var(--accent);color:#fff;font:inherit;cursor:pointer;text-decoration:none;margin-top:.6rem}
button.secondary,.btn.secondary{background:#fff;color:var(--accent)}button.danger,.btn.danger{background:var(--danger);border-color:var(--danger)}button.small,.btn.small{padding:.3rem .7rem;font-size:.9rem;margin:0}
.alert{padding:.7rem 1rem;border-radius:6px;margin-bottom:1rem;border:1px solid}.alert.error{background:#fdecea;border-color:#f5c2c0;color:var(--danger)}.alert.ok{background:#e8f5ec;border-color:#bfe3c9;color:var(--ok)}.alert.info{background:#e9f0fb;border-color:#c5d6f2;color:#204a8a}
table{width:100%;border-collapse:collapse;background:var(--card)}th,td{text-align:left;padding:.5rem .6rem;border-bottom:1px solid var(--line);vertical-align:top}th{font-weight:600;color:var(--muted);font-size:.85rem;text-transform:uppercase}
.muted{color:var(--muted)}code,pre{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9em}pre{background:#f0f2f5;padding:.8rem;border-radius:6px;overflow:auto;white-space:pre-wrap;word-break:break-all}
.tag{display:inline-block;padding:.1rem .5rem;border-radius:999px;font-size:.8rem;background:#e9ecf1;color:var(--muted)}.tag.ok{background:#e8f5ec;color:var(--ok)}.tag.bad{background:#fdecea;color:var(--danger)}
.actions{display:flex;gap:.5rem;flex-wrap:wrap;align-items:center}.actions form{display:inline}.qr{max-width:240px;margin:1rem 0}.qr svg{width:100%;height:auto}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1rem}.codes{columns:2;font-family:ui-monospace,monospace}
@media (max-width:640px){table{display:block;overflow-x:auto}}
.doc h1{font-size:1.5rem}.doc h2{font-size:1.2rem;margin-top:1.6rem;border-bottom:1px solid var(--line);padding-bottom:.3rem}.doc h3{font-size:1.02rem;margin:1.2rem 0 .4rem}
.doc pre{margin:.6rem 0}.doc table{margin:.6rem 0}.doc blockquote{margin:0 0 1rem;padding:.6rem 1rem;border-left:4px solid var(--accent);background:#e9f0fb}.doc li{margin:.2rem 0}