:root{--fg:#1d1d1f;--muted:#555;--line:#ddd;--bg:#fff;--accent:#1d1d1f;--soft:#f5f5f7}
@media (prefers-color-scheme:dark){:root{--fg:#ececec;--muted:#a8a8a8;--line:#3a3a3a;--bg:#141414;--accent:#ececec;--soft:#202020}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
.wrap{max-width:760px;margin:0 auto;padding:28px 20px}
.narrow{max-width:560px;padding-top:56px}
.brand{font-weight:700;letter-spacing:.02em;margin:0 0 8px}
.brand a{color:inherit;text-decoration:none}
h1{font-size:clamp(1.8rem,5vw,2.5rem);line-height:1.15;margin:.2em 0 .4em}
h2{font-size:1.3rem;margin:2.2em 0 .6em}
.sub{font-size:1.12rem;color:var(--muted)}
a{color:inherit}
.button,button{display:inline-block;background:var(--accent);color:var(--bg);border:0;border-radius:8px;padding:12px 20px;font:inherit;font-weight:600;text-decoration:none;cursor:pointer}
button[disabled]{opacity:.6;cursor:wait}
.note{font-size:.9rem;color:var(--muted)}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9em;background:var(--soft);padding:1px 5px;border-radius:4px}
pre{background:var(--soft);border-radius:10px;padding:14px 16px;overflow-x:auto;margin:0}
pre code{background:none;padding:0;font-size:.85rem;line-height:1.5}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:12px}
.card{border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.card p{margin:.3em 0 0;color:var(--muted);font-size:.95rem}
ul{padding-left:1.2em} li{margin:.35em 0}
.join{border-top:1px solid var(--line);margin-top:2.5em}
form{display:grid;gap:6px;max-width:460px}
label{font-weight:600;margin-top:8px}
.req,.opt{font-weight:400;color:var(--muted);font-size:.9em}
input,select,textarea{width:100%;font:inherit;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--fg)}
textarea{resize:vertical}
form button{margin-top:14px;justify-self:start}
.hp{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}
.status{min-height:1.4em;margin:6px 0 0}
.status.error{color:#c0392b}
.status.ok{color:#1e8449}
.privacy{max-width:520px}
details{border-bottom:1px solid var(--line);padding:10px 0}
summary{cursor:pointer;font-weight:600}
details p{margin:.5em 0 0;color:var(--muted)}
.foot{border-top:1px solid var(--line);margin-top:24px}
.foot p{margin:.3em 0}
[hidden]{display:none!important}