:root{--bg:#fbfbfa;--fg:#1a1a18;--muted:#6b6b66;--line:#e2e2dd;--card:#fff;--accent:#b4441f}@media (prefers-color-scheme:dark){:root{--bg:#16161a;--fg:#ececea;--muted:#9a9a96;--line:#2e2e34;--card:#1d1d22;--accent:#ff8a5c}}*{box-sizing:border-box}body{background:var(--bg);color:var(--fg);-webkit-font-smoothing:antialiased;margin:0;padding:0 24px 80px;font:16px/1.6 ui-sans-serif,-apple-system,Segoe UI,system-ui,sans-serif}nav,header,main,footer{max-width:860px;margin:0 auto}nav{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:16px 24px;padding:26px 0;display:flex}.mark{letter-spacing:.04em;color:var(--fg);font-size:14px;font-weight:600;text-decoration:none}.nav-links{flex-wrap:wrap;gap:18px;display:flex}.nav-links a{color:var(--muted);font-size:14px;text-decoration:none}.nav-links a:hover{color:var(--accent)}header{padding:46px 0 40px}h1{letter-spacing:-.02em;margin:0 0 20px;font-size:clamp(30px,5.5vw,44px);line-height:1.12}.lede{color:var(--muted);max-width:62ch;margin:0 0 28px;font-size:18px}.hero-url{background:var(--card);border:1px solid var(--line);color:var(--accent);overflow-wrap:anywhere;border-radius:8px;padding:10px 16px;font-size:14px;display:inline-block}section{border-top:1px solid var(--line);padding:40px 0}h2{letter-spacing:-.01em;margin:0 0 20px;font-size:21px}h3{margin:28px 0 8px;font-size:16px}p{max-width:68ch}.note{color:var(--muted);margin:-8px 0 20px;font-size:15px}code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9em}.muted{color:var(--muted)}a{color:var(--accent)}.builder-grid{grid-template-columns:1fr 1fr;gap:28px;display:grid}@media (width<=720px){.builder-grid{grid-template-columns:1fr}}form{flex-direction:column;gap:14px;display:flex}.row{gap:14px;display:flex}.row label{flex:1}label{color:var(--muted);flex-direction:column;gap:6px;font-size:13px;display:flex}input,select,textarea{font:inherit;border:1px solid var(--line);background:var(--card);color:var(--fg);border-radius:7px;padding:9px 11px;font-size:15px}textarea{resize:vertical;min-height:60px;line-height:1.45}input:focus,select:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:1px}.check{cursor:pointer;flex-direction:row;align-items:center;gap:8px}.check input{width:auto;accent-color:var(--accent)}.output{flex-direction:column;gap:10px;display:flex}.out-label{color:var(--muted);font-size:13px}.url-box{background:var(--card);border:1px solid var(--line);overflow-wrap:anywhere;border-radius:7px;min-height:44px;padding:11px 13px}.url-box code{color:var(--accent)}.actions{align-items:center;gap:10px;display:flex}button,.actions a{font:inherit;border:1px solid var(--line);background:var(--card);color:var(--fg);cursor:pointer;border-radius:7px;padding:8px 15px;font-size:14px;text-decoration:none}button:hover,.actions a:hover{border-color:var(--accent);color:var(--accent)}.preview-wrap{position:relative}iframe{border:1px solid var(--line);background:var(--card);border-radius:8px;width:100%;height:340px;display:block}.spinner{color:var(--muted);background:var(--bg);opacity:0;pointer-events:none;border-radius:20px;padding:2px 8px;font-size:12px;transition:opacity .15s;position:absolute;top:10px;right:12px}.spinner.on{opacity:1}.dl-note{color:var(--muted);margin:0;font-size:13px;line-height:1.5}.dl-note[hidden]{display:none}table{border-collapse:collapse;width:100%;font-size:15px;display:block;overflow-x:auto}th{text-align:left;color:var(--muted);padding:0 14px 10px 0;font-size:13px;font-weight:500}td{border-top:1px solid var(--line);vertical-align:top;padding:12px 14px 12px 0}td:first-child code{color:var(--accent)}.examples{flex-direction:column;gap:14px;margin:0;padding:0;list-style:none;display:flex}.examples li{flex-direction:column;gap:3px;display:flex}.examples span{color:var(--muted);font-size:14px}.examples a{overflow-wrap:anywhere}.notes{color:var(--muted);flex-direction:column;gap:10px;margin:0;padding-left:20px;display:flex}.notes strong{color:var(--fg);font-weight:600}footer{border-top:1px solid var(--line);color:var(--muted);padding-top:36px;font-size:14px}.foot-links{flex-wrap:wrap;gap:16px;display:flex}