:root{--bg:#fbfaf7;--fg:#16181d;--muted:#5b6170;--line:#e3e1da;--card:#ffffff;--accent:#1f7a4d;--accent-fg:#ffffff;--focus:#1f6feb}
@media (prefers-color-scheme:dark){:root{--bg:#0f1114;--fg:#e8e9ec;--muted:#a1a7b3;--line:#262a31;--card:#161a20;--accent:#4cc38a;--accent-fg:#0b1210;--focus:#79b8ff}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.6 ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
a{color:inherit;text-underline-offset:3px}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--focus);outline-offset:2px}
.wrap{max-width:760px;margin:0 auto;padding:40px 20px 72px}
header.top{display:flex;justify-content:space-between;align-items:center;margin-bottom:56px}
.brand{font-weight:700;letter-spacing:-.01em;text-decoration:none;display:flex;gap:8px;align-items:center}
.dot{width:10px;height:10px;border-radius:50%;background:var(--accent);display:inline-block}
nav a{color:var(--muted);font-size:15px;text-decoration:none;margin-left:18px}
nav a:hover{color:var(--fg)}
h1{font-size:clamp(40px,8vw,64px);line-height:1.05;letter-spacing:-.03em;margin:0 0 18px}
.lede{font-size:20px;color:var(--muted);max-width:620px;margin:0 0 40px}
.points{display:grid;gap:14px;margin:0 0 44px;padding:0;list-style:none}
.points li{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px 20px}
.points b{display:block;margin-bottom:4px}
.points span{color:var(--muted);font-size:16px}
form{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px}
form h2{font-size:20px;margin:0 0 4px}
form p{color:var(--muted);font-size:15px;margin:0 0 16px}
.row{display:flex;gap:10px;flex-wrap:wrap}
label{position:absolute;left:-9999px}
input{flex:1 1 220px;min-width:0;font:inherit;padding:12px 14px;border-radius:10px;border:1px solid var(--line);background:var(--bg);color:var(--fg)}
button{font:inherit;font-weight:600;padding:12px 18px;border-radius:10px;border:0;background:var(--accent);color:var(--accent-fg);cursor:pointer}
button[disabled]{opacity:.6;cursor:default}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
#status{min-height:24px;margin:12px 0 0;font-size:15px}
.ok{color:var(--accent)}.err{color:#c0392b}
footer{margin-top:56px;padding-top:20px;border-top:1px solid var(--line);color:var(--muted);font-size:14px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
.doc h1{font-size:clamp(32px,6vw,44px)}
.doc h2{font-size:20px;margin:32px 0 8px}
.doc p,.doc li{color:var(--fg)}
.doc code,.doc pre{font:14px/1.5 ui-monospace,SFMono-Regular,Menlo,monospace;background:var(--card);border:1px solid var(--line);border-radius:8px}
.doc code{padding:1px 6px}
.doc pre{padding:12px 14px;overflow-x:auto}