:root{--fg:#1f1a22;--muted:#6b6470;--line:#e8e2ea;--accent:#7b2d43;--accent-soft:#fdf6f8;--soft:#faf7fb;--good:#148a4e;--code:#f4f0f6}
*{box-sizing:border-box}
body{margin:0;color:var(--fg);background:#fff;font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
.topnav{border-bottom:1px solid var(--line);position:sticky;top:0;background:#fff;z-index:10}
.nav-in{max-width:900px;margin:0 auto;padding:12px 20px;display:flex;gap:6px 18px;flex-wrap:wrap;align-items:center}
.nav-in .brand{font-weight:700;color:var(--fg);text-decoration:none;margin-right:auto;display:inline-flex;align-items:center;gap:8px}
.nav-in .dot{width:10px;height:10px;border-radius:999px;background:var(--accent)}
.nav-in a{color:var(--muted);text-decoration:none;font-size:.92rem}
.nav-in a:hover{color:var(--accent)}
main{max-width:900px;margin:0 auto;padding:44px 20px}
h1{font-size:2.05rem;margin:0 0 .2em;line-height:1.15}
h2{font-size:1.3rem;margin:2.2em 0 .6em;padding-top:.6em;border-top:1px solid var(--line)}
h3{font-size:1.02rem;margin:1.6em 0 .4em}
p.sub{color:var(--muted);font-size:1.12rem;margin:0 0 1.4em}
code{background:var(--code);padding:.13em .4em;border-radius:5px;font-size:.88em;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
pre{background:var(--code);padding:14px 16px;border-radius:10px;overflow-x:auto;font-size:.85rem;line-height:1.5}
pre code{background:none;padding:0}
table{border-collapse:collapse;width:100%;margin:1em 0;font-size:.93rem;display:block;overflow-x:auto}
th,td{text-align:left;padding:8px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-weight:600;color:var(--muted);font-size:.85rem;text-transform:uppercase;letter-spacing:.03em}
.pill-row{display:flex;flex-wrap:wrap;gap:.5rem;margin:.8rem 0}
.pill{background:var(--soft);border:1px solid var(--line);border-radius:999px;padding:.35rem .9rem;font-size:.85rem;color:var(--muted)}
.pill.good{background:#eefaf3;border-color:#c7ecd8;color:var(--good)}
.note{background:var(--accent-soft);border:1px solid #f0d9e0;border-left:3px solid var(--accent);border-radius:8px;padding:14px 18px;margin:1.3em 0;font-size:.94rem}
.note strong{color:var(--accent)}
.cards{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));margin:1.2em 0}
.card{border:1px solid var(--line);border-radius:12px;padding:16px 18px;background:var(--soft)}
.card h3{margin:0 0 .3em;font-size:1rem;color:var(--accent)}
.card p{margin:0;color:var(--muted);font-size:.9rem}
.card .big{font-size:1.7rem;font-weight:700;color:var(--fg);line-height:1.1}
a{color:var(--accent)}
.cta{display:inline-block;margin-top:.8em;background:var(--accent);color:#fff;text-decoration:none;padding:.65rem 1.25rem;border-radius:999px;font-weight:650;font-size:.94rem}
.cta.ghost{background:#fff;color:var(--accent);border:1px solid var(--accent)}
footer{max-width:900px;margin:0 auto;color:var(--muted);font-size:.85rem;border-top:1px solid var(--line);padding:24px 20px 48px}
.foot-links{display:flex;flex-wrap:wrap;gap:.5rem 1.1rem;margin-bottom:.6rem}
@media(max-width:600px){h1{font-size:1.6rem}main{padding:28px 16px}}

/* --- live demo (house pattern: every sibling API page carries one) --- */
.demo{border:1px solid var(--line);border-radius:14px;padding:18px 20px;background:var(--soft);margin:1.2em 0}
.demo-tabs{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}
.demo-tab{border:1px solid var(--line);background:#fff;border-radius:999px;padding:.35rem .9rem;font-size:.85rem;color:var(--muted);cursor:pointer;font-family:inherit}
.demo-tab[aria-selected="true"]{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:650}
.demo-row{display:flex;gap:8px;flex-wrap:wrap}
.demo-row input{flex:1 1 220px;min-width:0;padding:.6rem .8rem;border:1px solid var(--line);border-radius:9px;font:inherit;font-size:.95rem;background:#fff;color:var(--fg)}
.demo-row input:focus{outline:2px solid var(--accent);outline-offset:1px}
.demo-row button{background:var(--accent);color:#fff;border:0;border-radius:9px;padding:.6rem 1.15rem;font:inherit;font-weight:650;cursor:pointer}
.demo-row button:disabled{opacity:.55;cursor:default}
.demo-hint{color:var(--muted);font-size:.83rem;margin:.55rem 0 0}
.demo-hint button{background:none;border:0;color:var(--accent);cursor:pointer;font:inherit;font-size:inherit;padding:0;text-decoration:underline}
.demo-out{margin-top:14px}
.demo-meta{color:var(--muted);font-size:.83rem;margin-bottom:8px}
.demo-meta code{font-size:.9em}
.hit{background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px 13px;margin-bottom:7px}
.hit b{display:block;font-size:.97rem}
.hit span{color:var(--muted);font-size:.85rem}
.hit .tags{margin-top:5px;display:flex;flex-wrap:wrap;gap:5px}
.hit .tag{background:var(--soft);border:1px solid var(--line);border-radius:999px;padding:.1rem .55rem;font-size:.75rem;color:var(--muted)}
.demo-err{color:#a1362f;font-size:.9rem}
.cta-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:1em}
.cta-btn{display:inline-block;background:var(--accent);color:#fff;text-decoration:none;padding:.65rem 1.25rem;border-radius:999px;font-weight:650;font-size:.94rem}
.cta-btn.alt{background:#fff;color:var(--accent);border:1px solid var(--accent)}