:root{color-scheme:dark;--bg:#0a0b0d;--fg:#e9ecef;--muted:#8b949e;--line:#2b3138;--panel:#11151a;--accent:#d9dde2}
*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--fg);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;min-height:100%}
main{max-width:760px;margin:0 auto;padding:9vh 24px 80px}.brand{letter-spacing:.18em;font-size:.92rem;color:var(--muted)}h1{font-size:clamp(1.8rem,4vw,3.2rem);font-weight:600;letter-spacing:-.04em;margin:18px 0 32px}.lead{font-size:1.06rem;line-height:1.75}.muted{color:var(--muted)}.panel{margin:30px 0;padding:22px;border:1px solid var(--line);background:var(--panel);border-radius:10px}.signal{font-size:1.3rem;line-height:1.9;overflow-wrap:anywhere;word-break:break-all}.row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}input,textarea,button{font:inherit}input,textarea{flex:1;min-width:220px;background:#090b0e;color:var(--fg);border:1px solid var(--line);border-radius:7px;padding:12px}textarea{width:100%;min-height:130px}button,.button{display:inline-block;background:var(--fg);color:#090b0e;border:0;border-radius:7px;padding:12px 16px;text-decoration:none;cursor:pointer;font-weight:700}button:hover,.button:hover{opacity:.88}pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#07090b;border:1px solid var(--line);padding:16px;border-radius:8px;line-height:1.55}.ok{color:#b7f7c5}.bad{color:#ffb4b4}a{color:var(--fg)}footer{margin-top:60px;padding-top:18px;border-top:1px solid var(--line);color:var(--muted);font-size:.82rem}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:12px}.card{border:1px solid var(--line);background:var(--panel);padding:18px;border-radius:9px}.card h3{margin-top:0}.hidden{display:none}.tiny{font-size:.82rem}.code{font-family:inherit;background:#07090b;padding:.1em .35em;border-radius:4px}.status{min-height:1.4em;margin-top:12px}