:root{--bg:#f7f8fb;--card:#fff;--ink:#1c2333;--muted:#5b6478;--brand:#3b5bdb;--brand2:#2f4ac0;--line:#e3e7ef;--ok:#1b8a4b;--bad:#c92a2a;--soft:#eef2ff}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--ink)}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:1040px;margin:0 auto;padding:0 18px}
header.site{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:58px}
.logo{font-weight:800;font-size:1.2rem;color:var(--ink)}.logo span{color:var(--brand)}
nav.main a{margin-left:18px;color:var(--ink);font-weight:500}
.burger{display:none;background:none;border:0;font-size:1.6rem;cursor:pointer}
@media(max-width:700px){.burger{display:block}nav.main{display:none;position:absolute;top:58px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:8px 18px}nav.main.open{display:block}nav.main a{display:block;margin:0;padding:10px 0}}
main{padding:28px 0 50px}
h1{font-size:2rem;line-height:1.25;margin:.2em 0 .4em}h2{font-size:1.4rem;margin:1.6em 0 .5em}h3{font-size:1.1rem}
.lead{color:var(--muted);font-size:1.08rem;max-width:760px}
.crumbs{font-size:.9rem;color:var(--muted)}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px;margin:18px 0}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:16px}
.tile{display:block;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px;color:var(--ink);transition:.15s}
.tile:hover{border-color:var(--brand);transform:translateY(-2px);text-decoration:none}
.tile b{display:block;font-size:1.05rem;margin-bottom:4px}.tile small{color:var(--muted)}
.tag{display:inline-block;background:var(--soft);color:var(--brand2);font-size:.75rem;padding:2px 9px;border-radius:99px;margin-bottom:8px;font-weight:600}
label{display:block;font-weight:600;font-size:.9rem;margin:12px 0 4px}
input,select,textarea{width:100%;padding:10px 11px;border:1px solid #cfd5e3;border-radius:8px;font:inherit;background:#fff;color:var(--ink)}
textarea{min-height:130px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.92rem}
input[type=checkbox]{width:auto}input[type=color]{padding:2px;height:42px}
.row{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px}
button,.btn{background:var(--brand);color:#fff;border:0;border-radius:8px;padding:10px 18px;font:inherit;font-weight:600;cursor:pointer;margin:12px 8px 0 0}
button:hover{background:var(--brand2)}button.alt{background:#e8ecf7;color:var(--ink)}button.alt:hover{background:#dbe1f2}
.out{background:var(--soft);border-radius:10px;padding:14px 16px;margin-top:16px;overflow-x:auto}
.kv{display:grid;grid-template-columns:200px 1fr;gap:6px 14px}.kv div:nth-child(odd){color:var(--muted)}.kv div:nth-child(even){font-weight:600;word-break:break-all}
@media(max-width:560px){.kv{grid-template-columns:1fr}}
table{border-collapse:collapse;width:100%;font-size:.93rem}th,td{border:1px solid var(--line);padding:7px 10px;text-align:left}th{background:#f1f4fb}
.good{color:var(--ok);font-weight:700}.bad{color:var(--bad);font-weight:700}
.err{color:var(--bad);font-weight:600}
.diff div{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.88rem;white-space:pre-wrap;padding:1px 8px;border-left:4px solid transparent}
.diff .add{background:#e6f7ec;border-color:#2f9e5b}.diff .del{background:#fdeaea;border-color:#d64545}
.pill{display:inline-block;padding:2px 9px;border-radius:99px;background:#e8ecf7;margin:2px;font-size:.85rem}
.hl td{background:#e6f7ec}
details{background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px 14px;margin:8px 0}summary{cursor:pointer;font-weight:600}
footer.site{background:#fff;border-top:1px solid var(--line);padding:26px 0;color:var(--muted);font-size:.92rem}
footer.site a{margin-right:14px;color:var(--muted)}
.prose{max-width:800px}.prose p,.prose li{color:#2b3347}
#cookie{position:fixed;bottom:12px;left:12px;right:12px;max-width:560px;background:#1c2333;color:#fff;padding:14px 16px;border-radius:12px;font-size:.9rem;z-index:50;display:none}
#cookie a{color:#9db4ff}#cookie button{margin:10px 0 0;padding:7px 16px}
.preview{border-radius:10px;padding:18px;margin-top:14px;border:1px solid var(--line)}