:root{--bg:#f6f7f9;--card:#fff;--ink:#1d2433;--muted:#5b6475;--brand:#1f7a4d;--brand-ink:#fff;--warn:#a15c00;--bad:#b42318;--line:#e3e6ec}@media (prefers-color-scheme:dark){:root{--bg:#11141a;--card:#1a1f27;--ink:#eef1f6;--muted:#a8b0bf;--line:#2b323d;--brand:#2f9e66}}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--ink);margin:0;font:17px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}main{max-width:720px;margin:0 auto;padding:24px 16px 48px}main.wide{max-width:1100px}h1{margin:0 0 8px;font-size:1.6rem}.card{background:var(--card);border:1px solid var(--line);border-radius:14px;margin:16px 0;padding:22px}.muted{color:var(--muted)}.big-status{margin:4px 0 6px;font-size:1.5rem;font-weight:700}.ok{color:var(--brand)}.warn{color:var(--warn)}.bad{color:var(--bad)}.btn{text-align:center;cursor:pointer;background:var(--brand);width:100%;color:var(--brand-ink);border:0;border-radius:12px;min-height:56px;padding:16px 20px;font-size:1.1rem;font-weight:600;text-decoration:none;display:inline-block}.btn.secondary{color:var(--ink);border:1px solid var(--line);background:0 0}.btn:disabled{opacity:.6;cursor:wait}.row{flex-wrap:wrap;gap:12px;display:flex}.row>*{flex:200px}label{margin:14px 0 6px;font-weight:600;display:block}input{border:1px solid var(--line);background:var(--card);width:100%;color:var(--ink);border-radius:10px;padding:14px;font-size:1.1rem}.msg{color:#6b3d00;background:#fff4e5;border-radius:10px;margin:12px 0;padding:12px 14px}.msg.ok{color:#145232;background:#e7f6ee}.screen{aspect-ratio:16/10;border:1px solid var(--line);background:#000;border-radius:10px;width:100%;overflow:hidden}.top{justify-content:space-between;align-items:center;gap:8px;max-width:1100px;margin:0 auto;padding:12px 16px;display:flex}.link{color:var(--muted);cursor:pointer;background:0 0;border:0;font-size:1rem;text-decoration:underline}.check{color:var(--brand);font-size:4rem;line-height:1}