:root {
  --bg: #f6f7f9; --card: #fff; --ink: #1c2330; --muted: #5b6577; --line: #e3e6ec;
  --brand: #3b4cca; --brand-ink: #fff;
  --pass-bg: #e8f6ee; --pass-ink: #14633a; --pass-line: #b9e3cb;
  --warn-bg: #fff4dc; --warn-ink: #7a4d00; --warn-line: #f2d99a;
  --fail-bg: #fde8e8; --fail-ink: #98211f; --fail-line: #f3bcbb;
  --info-bg: #eef0f4; --info-ink: #464f61; --info-line: #d7dbe3;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12151b; --card: #1a1f28; --ink: #e8ebf1; --muted: #9aa4b6; --line: #2b3240;
    --brand: #7c8cff; --brand-ink: #10131a;
    --pass-bg: #15301f; --pass-ink: #8fdcb0; --pass-line: #26503a;
    --warn-bg: #3a2c0d; --warn-ink: #f1cd7a; --warn-line: #5d4818;
    --fail-bg: #3a1717; --fail-ink: #f3a3a1; --fail-line: #5f2828;
    --info-bg: #232a36; --info-ink: #b6bfcf; --info-line: #333c4c;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--ink); }
.wrap { max-width: 880px; margin: 0 auto; padding: 0 16px; }
.sr, .hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.small { font-size: 14px; color: var(--muted); }
.hero { background: var(--card); border-bottom: 1px solid var(--line); padding: 40px 0 28px; }
h1 { margin: 0 0 6px; font-size: clamp(28px, 6vw, 40px); letter-spacing: -0.02em; }
h2 { font-size: 20px; margin: 0 0 12px; }
.lead { margin: 0 0 20px; font-size: 18px; color: var(--muted); }
.bar { display: flex; gap: 8px; }
.bar input[type=text]#url { flex: 1; min-width: 0; padding: 14px 16px; font-size: 18px; border: 2px solid var(--line); border-radius: 10px; background: var(--bg); color: var(--ink); }
.bar input#url:focus { outline: none; border-color: var(--brand); }
button, .btn { font: inherit; font-weight: 600; cursor: pointer; border: 0; border-radius: 10px; padding: 14px 22px; background: var(--brand); color: var(--brand-ink); }
button:hover { filter: brightness(1.08); }
button:focus-visible, a:focus-visible, summary:focus-visible, input:focus-visible { outline: 3px solid var(--brand); outline-offset: 2px; }
button[disabled] { opacity: .6; cursor: progress; }
.btn-ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); padding: 8px 14px; font-weight: 500; }
.noscript-note { margin: 12px auto; max-width: 880px; }
.error { color: var(--fail-ink); background: var(--fail-bg); border: 1px solid var(--fail-line); padding: 10px 14px; border-radius: 10px; margin: 12px 0 0; }
main { padding-top: 24px; padding-bottom: 24px; }
.busy { display: flex; align-items: center; gap: 12px; padding: 18px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; margin-bottom: 16px; }
.spin { width: 20px; height: 20px; border: 3px solid var(--line); border-top-color: var(--brand); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .spin { animation-duration: 3s; } }
.meta { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.meta .u { font-weight: 600; word-break: break-all; }
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 12px; margin-bottom: 14px; }
.tile { border-radius: 12px; padding: 14px 16px; border: 1px solid; }
.tile .k { font-size: 13px; text-transform: uppercase; letter-spacing: .04em; opacity: .85; }
.tile .v { font-size: 20px; font-weight: 700; margin-top: 2px; line-height: 1.25; }
.s-pass { background: var(--pass-bg); color: var(--pass-ink); border-color: var(--pass-line); }
.s-warn { background: var(--warn-bg); color: var(--warn-ink); border-color: var(--warn-line); }
.s-fail { background: var(--fail-bg); color: var(--fail-ink); border-color: var(--fail-line); }
.s-info { background: var(--info-bg); color: var(--info-ink); border-color: var(--info-line); }
.counts { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 14px; padding: 0; list-style: none; }
.counts li { padding: 4px 12px; border-radius: 999px; border: 1px solid; font-size: 14px; font-weight: 600; }
.fixfirst { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; margin-bottom: 14px; }
.fixfirst h2 { margin-bottom: 8px; font-size: 18px; }
.fixfirst ol { list-style: none; margin: 0; padding: 0; }
.fixfirst li { display: grid; grid-template-columns: 84px 1fr; gap: 12px; padding: 10px 0; border-top: 1px solid var(--line); }
.fixfirst li:first-child { border-top: 0; }
.fixfirst .top { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 2px 12px; }
.fixfirst .l, .fixfirst .val { font-weight: 600; }
.fixfirst .note { color: var(--muted); font-size: 14px; margin: 2px 0 0; }
.foot p { margin: 4px 0; }
.meta:focus { outline: none; }
.limits { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px; margin-bottom: 16px; }
.limits summary { cursor: pointer; font-weight: 600; }
.limits ul { margin: 8px 0 0; padding-left: 20px; color: var(--muted); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; margin-bottom: 16px; overflow: hidden; }
.card > h2 { padding: 14px 16px; margin: 0; border-bottom: 1px solid var(--line); font-size: 18px; }
.row { display: grid; grid-template-columns: 84px 1fr; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--line); }
.row:last-child { border-bottom: 0; }
.badge { align-self: start; justify-self: start; display: inline-flex; align-items: center; justify-content: center; gap: 4px; padding: 3px 8px; border-radius: 999px; border: 1px solid; font-size: 12px; font-weight: 700; }
.row .top { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 2px 12px; }
.row .l { font-weight: 600; }
.row .val { font-weight: 600; text-align: right; }
.row .note { color: var(--muted); font-size: 14px; margin: 2px 0 0; }
.row details { margin-top: 6px; font-size: 14px; }
.row summary { cursor: pointer; color: var(--brand); }
.row ul { margin: 6px 0 0; padding-left: 18px; word-break: break-word; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin: 4px 0 16px; }
.about { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; margin-top: 8px; }
.about ul { padding-left: 20px; margin: 0 0 12px; }
.foot { padding-bottom: 32px; text-align: center; }
@media (max-width: 560px) {
  .bar { flex-direction: column; }
  .row { grid-template-columns: 1fr; gap: 6px; }
  .row .val { text-align: left; }
  .fixfirst li { grid-template-columns: 1fr; gap: 6px; }
}
@media print { .hero, .actions, .about, .foot { display: none; } body { background: #fff; } .row, .card > h2, .fixfirst li { break-inside: avoid; } .row summary { color: inherit; } }