:root{--bg:#f6f8fc;--card:#fff;--fg:#172033;--muted:#56617a;--line:#e2e7f0;--accent:#1f4fb8;
--red:#c62828;--yellow:#b26a00;--green:#2e7d32;--grey:#6b7280}
@media (prefers-color-scheme:dark){:root{--bg:#0e1322;--card:#161d31;--fg:#e9eefb;
--muted:#a3aec7;--line:#26304a;--accent:#7ea2ff;--red:#ff7a7a;--yellow:#ffc15e;
--green:#6fd08c;--grey:#a3aec7}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);
font:17px/1.6 -apple-system,"Segoe UI",Roboto,Arial,sans-serif}
main{max-width:760px;margin:0 auto;padding:32px 16px 48px}
a{color:var(--accent)}
header{display:flex;justify-content:space-between;align-items:center;margin-bottom:28px}
.brand{font-weight:700;font-size:19px;color:var(--fg);text-decoration:none}
.lang{font-size:14px}
h1{font-size:clamp(26px,5vw,36px);line-height:1.2;margin:0 0 12px}
.lead{color:var(--muted);margin:0 0 24px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px;
margin:16px 0}
form.check{display:flex;gap:10px;flex-wrap:wrap}
form.check label{flex-basis:100%}
input[type=text]{flex:1;min-width:0;padding:14px;border:1px solid var(--line);border-radius:10px;
font:inherit;background:var(--card);color:var(--fg)}
button,.button{display:inline-block;padding:14px 22px;border:0;border-radius:10px;
background:var(--accent);color:#fff;font:inherit;font-weight:600;cursor:pointer;
text-decoration:none}
@media (prefers-color-scheme:dark){button,.button{color:#0e1322}}
.notes,.small{color:var(--muted);font-size:14px}
.error{border-color:var(--red);color:var(--red)}
.ok{border-left:6px solid var(--green)}
table{border-collapse:collapse;width:100%;font-size:15px}
td{padding:6px 8px;border-bottom:1px solid var(--line);vertical-align:top}
td:first-child{color:var(--muted);white-space:nowrap}
code{word-break:break-all;background:var(--bg);padding:2px 6px;border-radius:6px}
.status-red{color:var(--red)}.status-yellow{color:var(--yellow)}.status-green{color:var(--green)}
.status-incomplete,.status-unknown{color:var(--grey)}
footer{margin-top:40px;color:var(--muted);font-size:13px}