:root{--bg:#fff;--surface:#f5f6f8;--text:#1b1f24;--muted:#5d6673;--border:#d9dde3;--link:#0b5fcc;--accent:#0b5fcc;color-scheme:light dark}@media (prefers-color-scheme:dark){:root{--bg:#121418;--surface:#1c2027;--text:#e6e8eb;--muted:#9aa3ae;--border:#2e343d;--link:#7ab4ff;--accent:#7ab4ff}}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--text);margin:0;font:17px/1.65 system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,PingFang SC,Microsoft YaHei,sans-serif}main,.site-header,.site-footer{max-width:72ch;margin:0 auto;padding:0 16px}main{padding-bottom:3rem}a{color:var(--link)}h1,h2,h3{line-height:1.25}h1{margin:1.5rem 0 .5rem;font-size:2rem}h2{margin-top:2rem;font-size:1.35rem}img{max-width:100%;height:auto}code{background:var(--surface);border-radius:4px;padding:.1em .3em}.site-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding-top:1rem;padding-bottom:1rem;display:flex}.brand{color:var(--text);font-weight:700;text-decoration:none}.site-footer{border-top:1px solid var(--border);padding-top:1rem;padding-bottom:2rem;font-size:.9rem}.site-footer nav,.legal{flex-wrap:wrap;gap:1rem;display:flex}.muted{color:var(--muted)}.meta{color:var(--muted);margin:0 0 1rem;font-size:.9rem}.crumbs{color:var(--muted);margin-top:1rem;font-size:.85rem}.lede{color:var(--muted);font-size:1.1rem}.guide-list{padding-left:1.2rem}table{border-collapse:collapse;width:100%;margin:1rem 0;font-size:.95rem;display:block;overflow-x:auto}th,td{border:1px solid var(--border);text-align:left;vertical-align:top;padding:.45rem .6rem}th{background:var(--surface)}.faq details{border:1px solid var(--border);border-radius:6px;margin:.5rem 0;padding:.5rem .8rem}.faq summary{cursor:pointer;font-weight:600}.guide-footer{border-top:1px solid var(--border);margin-top:3rem;padding-top:1rem;font-size:.92rem}.guide-footer h2{margin-top:1.25rem;font-size:1.05rem}#tool-root{background:var(--surface);border:1px solid var(--border);border-radius:8px;margin:1rem 0 1.5rem;padding:1rem}#tool-root label{margin:.5rem 0;display:block}#tool-root input{font:inherit;background:var(--bg);width:10rem;max-width:100%;color:var(--text);border:1px solid var(--border);border-radius:4px;padding:.35rem .5rem}#tool-root output{color:var(--accent);margin-top:.75rem;font-size:1.2rem;font-weight:700;display:block}.video-embed{aspect-ratio:16/9;background:#000;margin:1rem 0 .5rem;position:relative}.video-embed iframe{border:0;width:100%;height:100%;position:absolute;inset:0}figure.frame{margin:1.5rem 0}figure.frame img{border-radius:4px;width:100%;display:block}figure.frame figcaption{opacity:.8;margin-top:.4rem;font-size:.9em}figure.frame figcaption a{font-variant-numeric:tabular-nums}.tested{background:var(--surface);border:1px solid var(--border);border-radius:8px;margin:1rem 0 1.5rem;padding:.25rem 1rem .5rem}.tested h2{margin:.75rem 0 .25rem;font-size:1.05rem}.untested{border-left:4px solid var(--accent);background:var(--surface);border-radius:0 6px 6px 0;margin:1rem 0 1.5rem;padding:.6rem .9rem}pre{background:var(--surface);border:1px solid var(--border);border-radius:6px;padding:.75rem 1rem;overflow-x:auto}.tested-row{grid-template-columns:max-content 1fr;gap:.25rem 1rem;margin:.5rem 0;display:grid}.tested-row dt{color:var(--muted)}.tested-row dd{overflow-wrap:anywhere;margin:0}:not(pre)>code{overflow-wrap:anywhere}.pro-box{background:var(--surface);border:1px solid var(--border);border-radius:8px;margin:1rem 0;padding:1rem}.pro-box h3{margin-top:0}.pro-box label{margin-bottom:.6rem;display:block}.pro input[type=email]{font:inherit;background:var(--bg);width:18rem;max-width:100%;color:var(--text);border:1px solid var(--border);border-radius:4px;padding:.4rem .55rem}.pro-button{font:inherit;background:var(--accent);color:var(--bg);cursor:pointer;border:0;border-radius:6px;padding:.5rem 1rem;font-weight:600}.pro-button:disabled{opacity:.6;cursor:default}.pro-license{word-break:break-all;background:var(--surface);width:100%;color:var(--text);border:1px solid var(--border);box-sizing:border-box;border-radius:6px;padding:.6rem;font:.85rem/1.4 ui-monospace,SFMono-Regular,Menlo,monospace}.pro-status{min-height:1.5em}.pro-buy{flex-wrap:wrap;gap:.6rem;display:flex}a.pro-button{text-decoration:none;display:inline-block}.pro-button-secondary{color:var(--accent);border:1px solid var(--accent);background:0 0}.pro-qr canvas{background:#fff;border-radius:6px;display:block}