:root {
  --canvas: #f5f1ec;
  --surface: #ffffff;
  --surface-2: #ebe7e1;
  --ink: #111111;
  --ink-muted: #626260;
  --ink-subtle: #7b7b78;
  --hairline: #d8d1c8;
  --hairline-soft: #ebe7e1;
  --orange: #ff5600;
  --footer-bg: #eee8de;
  --critical: #d23b1f;
  --warning: #b26a00;
  --info: #6b7280;
  --mono:
    "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}
html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--ink);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.wrap,
.main,
.panel,
.nav,
.foot-inner {
  max-width: 820px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ── nav ── */
.nav {
  display: flex;
  align-items: center;
  gap: 20px;
  padding-top: 20px;
  padding-bottom: 20px;
}
.brand {
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
  font-size: 17px;
}
.brand:hover {
  text-decoration: none;
}
.nav-link {
  color: var(--ink-muted);
  font-weight: 500;
  margin-left: auto;
  font-size: 15px;
}
.nav-link:hover {
  color: var(--ink);
}

/* ── content ── */
.main {
  padding-top: 8px;
  padding-bottom: 48px;
}
.main h1 {
  font-size: clamp(30px, 4.6vw, 46px);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.025em;
  margin: 12px 0 18px;
  text-wrap: balance;
}
.main h2 {
  font-size: 24px;
  font-weight: 500;
  letter-spacing: -0.017em;
  margin: 40px 0 12px;
}
.main h3 {
  font-size: 19px;
  font-weight: 500;
  margin: 26px 0 8px;
}
.main h4 {
  font-size: 16px;
  font-weight: 600;
  margin: 20px 0 6px;
}
.main p {
  color: #2c2c2b;
  margin: 0 0 16px;
}
.lede {
  font-size: 19px;
  line-height: 1.45;
  letter-spacing: -0.006em;
  color: var(--ink);
}
.main a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--hairline);
  text-underline-offset: 3px;
}
.main a:hover {
  text-decoration-color: var(--ink);
}
.main img {
  max-width: 100%;
  border-radius: 10px;
  border: 1px solid var(--hairline);
  display: block;
  margin: 20px 0;
  background: var(--surface);
}
.main code {
  font-family: var(--mono);
  font-size: 13.5px;
  background: var(--surface-2);
  padding: 2px 6px;
  border-radius: 5px;
}
.main ul,
.main ol {
  color: #2c2c2b;
  padding-left: 20px;
}
.main li {
  margin: 4px 0;
}
.next {
  margin-top: 8px;
}
.next a {
  font-weight: 500;
}

/* ── test panel ── */
.panel {
  margin-top: 8px;
  margin-bottom: 32px;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 12px;
  padding: 18px 20px;
}
.panel-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}
.panel-kicker {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 11px;
  font-weight: 600;
  color: var(--ink-subtle);
}
.panel-cat {
  margin-left: auto;
  font-size: 12px;
  color: var(--ink-subtle);
  font-family: var(--mono);
}
.panel-summary {
  margin: 10px 0 0;
  font-size: 15px;
  color: var(--ink);
}
.panel-lesson {
  margin: 6px 0 0;
  font-size: 14px;
  color: var(--ink-muted);
}
.panel-chips {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.chips-label {
  font-size: 12px;
  color: var(--ink-subtle);
  font-weight: 500;
  margin-right: 2px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--ink);
  padding: 3px 11px 3px 9px;
  border-radius: 999px;
  background: var(--canvas);
  border: 1px solid var(--hairline);
}
.chip::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex: none;
  background: var(--info);
}
.chip-critical::before {
  background: var(--critical);
}
.chip-warning::before {
  background: var(--warning);
}
.chip-info::before {
  background: var(--info);
}
.chip-clean {
  color: var(--ink-muted);
}
.chip-clean::before {
  background: #3a9d5d;
}

/* ── hero + home bits ── */
.hero {
  padding: 20px 0 4px;
}
.stat-row {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
  margin: 26px 0 8px;
}
.stat b {
  font-size: 30px;
  font-weight: 500;
  letter-spacing: -0.02em;
  display: block;
  line-height: 1.1;
}
.stat span {
  color: var(--ink-muted);
  font-size: 14px;
}
.callout {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 12px;
  padding: 16px 18px;
  margin: 24px 0;
}
.callout p {
  margin: 0;
  color: #2c2c2b;
}

/* ── catalog index (no cards) ── */
.index-group {
  margin: 40px 0;
}
.index-group > h2 {
  margin-bottom: 4px;
}
.index-list {
  margin-top: 8px;
  border-top: 1px solid var(--hairline);
}
.index-list .index-row {
  display: grid;
  grid-template-columns: minmax(160px, 240px) 1fr auto;
  gap: 20px;
  align-items: baseline;
  padding: 14px 12px;
  margin: 0 -12px;
  border-radius: 8px;
  border-bottom: 1px solid var(--hairline);
  color: var(--ink);
  text-decoration: none;
}
.index-list .index-row:hover {
  background: var(--surface-2);
  border-bottom-color: transparent;
}
.index-list .index-row:hover .row-name {
  text-decoration: underline;
  text-decoration-color: var(--ink);
  text-underline-offset: 3px;
}
.row-name {
  font-weight: 500;
}
.row-sum {
  color: var(--ink-muted);
  font-size: 14.5px;
}
.row-sev {
  display: inline-flex;
  gap: 5px;
  align-items: center;
  padding-top: 4px;
}
.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  flex: none;
}
.dot-critical {
  background: var(--critical);
}
.dot-warning {
  background: var(--warning);
}
.dot-info {
  background: var(--info);
}
.legend {
  display: inline-flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: center;
  color: var(--ink-muted);
  font-size: 14px;
}
.legend span {
  display: inline-flex;
  gap: 6px;
  align-items: center;
}
@media (max-width: 640px) {
  .index-row {
    grid-template-columns: 1fr auto;
  }
  .row-sum {
    grid-column: 1 / -1;
  }
}

/* ── footer + OpenSEO badge ── */
/* The band fills to the bottom of the page (no body padding beneath it). Extra
   bottom padding keeps the footer text clear of the fixed badge, which floats
   in the empty band space below the row. */
.foot {
  background: var(--footer-bg);
  border-top: 1px solid var(--hairline);
  margin-top: 64px;
}
.foot-inner {
  padding: 26px 24px 76px;
  color: var(--ink-muted);
  font-size: 14px;
  display: flex;
  justify-content: space-between;
  gap: 8px 24px;
  flex-wrap: wrap;
}
.foot-inner a {
  color: var(--ink-muted);
}
.foot-inner a:hover {
  color: var(--ink);
}
.foot-links {
  display: flex;
  gap: 18px;
  align-items: center;
  flex-wrap: wrap;
}
.footer-button {
  appearance: none;
  border: 0;
  padding: 0;
  background: transparent;
  color: var(--ink-muted);
  font: inherit;
  cursor: pointer;
}
.footer-button:hover {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ── analytics consent ── */
.consent-banner {
  position: fixed;
  z-index: 100;
  bottom: 24px;
  left: 24px;
  width: min(350px, calc(100vw - 48px));
  padding: 16px;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 14px;
  box-shadow:
    0 20px 50px rgb(17 17 17 / 14%),
    0 2px 8px rgb(17 17 17 / 7%);
  animation: consent-in 180ms ease-out;
}
.consent-banner[hidden] {
  display: none;
}
.consent-copy strong {
  display: block;
  margin-bottom: 4px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.consent-copy p {
  margin: 0 0 7px;
  color: var(--ink-muted);
  font-size: 13.5px;
  line-height: 1.45;
}
.consent-copy a {
  color: var(--ink-muted);
  font-size: 12.5px;
  text-decoration: underline;
  text-decoration-color: var(--hairline);
  text-underline-offset: 3px;
}
.consent-copy a:hover {
  color: var(--ink);
  text-decoration-color: var(--ink);
}
.consent-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 12px;
}
.consent-actions button {
  border: 1px solid var(--hairline);
  border-radius: 8px;
  min-height: 36px;
  padding: 7px 12px;
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
}
.consent-actions button:hover {
  background: var(--surface-2);
}
.consent-actions .consent-accept {
  border-color: var(--ink);
  background: var(--ink);
  color: #ffffff;
}
.consent-actions .consent-accept:hover {
  background: #000000;
}
@keyframes consent-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
}
@media (prefers-reduced-motion: reduce) {
  .consent-banner {
    animation: none;
  }
}
@media (max-width: 640px) {
  .consent-banner {
    right: 12px;
    bottom: 12px;
    left: 12px;
    width: auto;
    padding: 15px;
  }
}

.openseo-badge {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 50;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--ink);
  color: #ffffff;
  border-radius: 999px;
  padding: 11px 17px;
  font-size: 14px;
  font-weight: 500;
}
.openseo-badge:hover {
  background: #000000;
  text-decoration: none;
}
.openseo-badge strong {
  font-weight: 600;
}
.openseo-mark {
  width: 22px;
  height: 24px;
  flex: none;
  background: url("/openseo-logo.png") center / contain no-repeat;
  /* The source logo is a silver tree on transparent; render it white so it
     reads on the dark pill with no backing chip. */
  filter: brightness(0) invert(1);
}
@media (max-width: 640px) {
  .openseo-badge .badge-label {
    display: none;
  }
  .openseo-badge {
    padding: 10px 12px;
  }
}