:root {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #17221d;
  background: #f4f7f5;
  --ink: #17221d;
  --muted: #64716a;
  --line: #dce4df;
  --surface: #ffffff;
  --accent: #176b4d;
  --accent-soft: #e8f3ee;
  --danger: #a43434;
  --danger-soft: #fceaea;
  --warn: #835b10;
  --warn-soft: #fff4d8;
  --info: #34556d;
  --info-soft: #e9f2f8;
  --shadow: 0 22px 60px rgba(30, 56, 44, .08);
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; color: var(--ink); background: var(--surface); }
a { color: inherit; }
button, input, select { font: inherit; }
button { cursor: pointer; }

.site-header {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 750; text-decoration: none; }
.brand-mark { width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; background: var(--ink); color: white; }
.version-badge { padding: 3px 7px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); font-size: .68rem; font-weight: 800; letter-spacing: .03em; }
.runtime-version.mismatch .pill.detected-lang { border: 1px dashed #b7c6bd; background: #fff; }
.github-link { font-size: .92rem; color: var(--muted); text-decoration: none; }
.github-link:hover { color: var(--ink); }

main { overflow: hidden; }
.hero {
  padding: 104px 20px 92px;
  background:
    radial-gradient(circle at 15% 5%, rgba(23,107,77,.11), transparent 30%),
    radial-gradient(circle at 88% 10%, rgba(36,91,121,.08), transparent 28%),
    #f8faf9;
  border-bottom: 1px solid var(--line);
}
.hero > * { width: min(900px, 100%); margin-left: auto; margin-right: auto; }
.eyebrow { margin-top: 0; color: var(--accent); text-transform: uppercase; letter-spacing: .12em; font-weight: 800; font-size: .74rem; }
h1 { max-width: 900px; margin-top: 14px; margin-bottom: 22px; font-size: clamp(2.7rem, 7vw, 5.4rem); line-height: .98; letter-spacing: -.055em; }
.intro { max-width: 780px; color: var(--muted); font-size: clamp(1.05rem, 2vw, 1.3rem); line-height: 1.65; }

.audit-form { margin-top: 38px; padding: 13px; display: grid; grid-template-columns: 1fr 150px auto; gap: 10px; background: var(--surface); border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); }
.audit-form label span { display: block; margin-bottom: 6px; color: var(--muted); font-size: .72rem; font-weight: 750; text-transform: uppercase; letter-spacing: .05em; }
.audit-form input, .audit-form select, .toolbar input, .toolbar select { width: 100%; min-height: 46px; padding: 0 13px; border: 1px solid var(--line); border-radius: 10px; color: var(--ink); background: #fff; outline: none; }
.audit-form input:focus, .audit-form select:focus, .toolbar input:focus, .toolbar select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(23,107,77,.1); }
.audit-form button { align-self: end; min-height: 46px; padding: 0 22px; border: 0; border-radius: 10px; background: var(--ink); color: #fff; font-weight: 800; }
.audit-form button:hover { background: var(--accent); }
.audit-form button:disabled { opacity: .55; cursor: wait; }
.form-note, .status { color: var(--muted); font-size: .84rem; }
.form-note { margin-top: 11px; }
.status { min-height: 24px; margin-top: 10px; }
.status.error { color: var(--danger); }

.results { width: min(1180px, calc(100% - 40px)); margin: 0 auto; padding: 78px 0 84px; }
.results-heading { display: flex; gap: 24px; justify-content: space-between; align-items: end; margin-bottom: 28px; }
h2 { margin: 0; font-size: clamp(1.8rem, 3vw, 2.8rem); letter-spacing: -.035em; }
.muted { color: var(--muted); }
.actions { display: flex; gap: 9px; flex-wrap: wrap; }
.secondary { min-height: 42px; padding: 0 15px; border: 1px solid var(--line); border-radius: 10px; background: white; color: var(--ink); font-weight: 700; }
.secondary:hover { border-color: #b7c6bd; background: #f8faf9; }

.summary-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; margin: 28px 0 24px; }
.summary-card { padding: 18px; border: 1px solid var(--line); border-radius: 15px; background: white; }
.summary-card span { display: block; color: var(--muted); font-size: .82rem; }
.summary-card strong { display: block; margin-top: 7px; font-size: 1.8rem; letter-spacing: -.04em; }
.summary-card.error strong { color: var(--danger); }
.summary-card.warning strong { color: var(--warn); }
.summary-card.info strong { color: var(--info); }

.site-diagnostics { margin: 0 0 20px; padding: 18px; border: 1px solid var(--line); border-radius: 15px; background: #f8faf9; }
.site-diagnostics > div:first-child { display: flex; gap: 12px; justify-content: space-between; align-items: baseline; flex-wrap: wrap; }
.site-issues-list { margin-top: 12px; }
.toolbar { display: grid; grid-template-columns: 190px 1fr; gap: 10px; margin: 20px 0 12px; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 15px; }
table { width: 100%; border-collapse: collapse; background: white; }
th, td { padding: 15px 14px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
th { color: var(--muted); background: #f8faf9; font-size: .74rem; text-transform: uppercase; letter-spacing: .06em; }
tbody tr:last-child td { border-bottom: 0; }
.page-url { display: block; max-width: 490px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 750; text-decoration: none; }
.page-url:hover { text-decoration: underline; }
.page-title { max-width: 490px; margin-top: 5px; color: var(--muted); font-size: .84rem; line-height: 1.4; }
.pill { display: inline-flex; margin: 0 4px 5px 0; padding: 4px 8px; border-radius: 999px; background: #eff3f1; color: #445149; font-size: .74rem; font-weight: 700; white-space: nowrap; }
.pill.error { color: var(--danger); background: var(--danger-soft); }
.pill.warning { color: var(--warn); background: var(--warn-soft); }
.pill.info { color: var(--info); background: var(--info-soft); }
.canonical { display: block; max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--muted); font-size: .8rem; text-decoration: none; }
.issue-list { min-width: 300px; }
.issue-item { margin-bottom: 8px; line-height: 1.35; font-size: .8rem; }
.issue-item:last-child { margin-bottom: 0; }
.no-issues { color: var(--accent); font-size: .84rem; font-weight: 750; }

.explain { width: min(1180px, calc(100% - 40px)); margin: 0 auto; padding: 84px 0 104px; border-top: 1px solid var(--line); display: grid; grid-template-columns: .8fr 1.2fr; gap: 70px; }
.check-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.check-grid article { padding: 21px; border: 1px solid var(--line); border-radius: 15px; }
.check-grid h3 { margin: 0 0 9px; font-size: 1rem; }
.check-grid p { margin: 0; color: var(--muted); line-height: 1.55; font-size: .9rem; }

footer { width: min(1180px, calc(100% - 40px)); margin: 0 auto; padding: 28px 0 46px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 20px; color: var(--muted); font-size: .82rem; }
footer p { margin: 0; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

@media (max-width: 820px) {
  .hero { padding-top: 72px; }
  .audit-form { grid-template-columns: 1fr 120px; }
  .audit-form button { grid-column: 1 / -1; }
  .summary-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .results-heading, footer { align-items: flex-start; flex-direction: column; }
  .explain { grid-template-columns: 1fr; gap: 35px; }
}

@media (max-width: 560px) {
  .site-header, .results, .explain, footer { width: min(100% - 28px, 1180px); }
  .brand span:last-child { display: none; }
  .audit-form, .toolbar { grid-template-columns: 1fr; }
  .audit-form button { grid-column: auto; }
  .summary-grid, .check-grid { grid-template-columns: 1fr; }
  th, td { padding: 12px 10px; }
}