:root{--fg:#1d2433;--muted:#5b6475;--bg:#f6f7f9;--card:#fff;--accent:#0b5cad;--bad:#a4262c;color-scheme:light}
*{box-sizing:border-box}
body{margin:0;font:16px/1.5 system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--fg);background:var(--bg)}
header,footer{padding:12px 20px;color:var(--muted);font-size:14px}
header{background:var(--card);border-bottom:1px solid #e3e6eb;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
header strong{color:var(--fg)}
main{max-width:640px;margin:24px auto;padding:24px;background:var(--card);border-radius:8px;border:1px solid #e3e6eb}
@media (max-width:680px){main{margin:16px;padding:16px}}
h1{font-size:24px;margin-top:0}
a{color:var(--accent)}
.button,button{display:inline-block;background:var(--accent);color:#fff;border:0;border-radius:6px;padding:10px 18px;font:inherit;text-decoration:none;cursor:pointer}
.problem{color:var(--bad);font-weight:600}
.note{background:#fff4ce;padding:8px 12px;border-radius:6px}
.tapbox{display:flex;align-items:center;gap:12px;background:#eef4fb;padding:16px;border-radius:8px}
.tap{flex:1;font:600 32px/1.2 ui-monospace,Consolas,monospace;letter-spacing:2px;text-align:center;word-break:break-all}
.copy{flex:none}
dt{color:var(--muted);font-size:14px}dd{margin:0 0 12px}
main.wide{max-width:1200px}
.scroll{overflow-x:auto}
table{border-collapse:collapse;width:100%;font-size:14px}
th,td{text-align:left;vertical-align:top;padding:8px;border-bottom:1px solid #e3e6eb}
th{color:var(--muted);font-weight:600;white-space:nowrap}
.sub{color:var(--muted);font-size:12px}
.pill{display:inline-block;padding:2px 8px;border-radius:10px;font-size:12px;font-weight:600;white-space:nowrap}
.pill.ok{background:#dff6dd;color:#107c10}.pill.warn{background:#fff4ce;color:#7a5c00}.pill.bad{background:#fde7e9;color:var(--bad)}
.tabs{font-size:14px}
.actions{display:flex;flex-wrap:wrap;gap:12px}
.button.secondary{background:#fff;color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent)}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin:24px 0}
.card{display:flex;flex-direction:column;border:1px solid #e3e6eb;border-radius:12px;padding:20px;color:var(--fg);text-decoration:none;background:var(--card);transition:border-color .15s,box-shadow .15s,transform .15s}
a.card:hover,a.card:focus-visible{border-color:var(--accent);box-shadow:0 6px 18px rgba(11,92,173,.14);transform:translateY(-2px)}
.card .icon{width:40px;height:40px;padding:8px;border-radius:10px;background:#eef4fb;color:var(--accent)}
.card h2{font-size:18px;margin:14px 0 6px}
.card p{margin:0;color:var(--muted);font-size:14px;flex:1}
.card .go{margin-top:16px;font-weight:600;color:var(--accent)}
.card.soon{background:#f9fafb;border-style:dashed}
.card.soon .icon{background:#eceef2;color:var(--muted)}
.card.soon .go{color:var(--muted);font-weight:500}