* {
  box-sizing: border-box;
}

html {
  color: #111827;
  background: #F8FAFC;
  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
  font-variant-numeric: tabular-nums;
}

body {
  margin: 0;
  min-width: 320px;
  background: #F8FAFC;
  color: #111827;
  line-height: 1.55;
}

a {
  color: #1D4ED8;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: #1D4ED8;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid #3B82F6;
  outline-offset: 3px;
}

button {
  font: inherit;
}

.shell,
main {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: 8px;
  z-index: 10;
  transform: translateY(-180%);
  padding: 8px 12px;
  background: #111827;
  color: #FFFFFF;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  background: #FFFFFF;
  border-bottom: 1px solid #DBEAFE;
}

.sample-banner {
  padding: 7px 16px;
  background: #DBEAFE;
  color: #1D4ED8;
  text-align: center;
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.04em;
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 60px;
  gap: 16px;
}

.wordmark {
  color: #111827;
  font-size: 1.1rem;
  font-weight: 760;
  text-decoration: none;
}

.release-select {
  color: #334155;
  font-size: 0.875rem;
}

.release-select select {
  appearance: none;
  border: 0;
  background: transparent;
  color: #111827;
  font: inherit;
  font-weight: 700;
  opacity: 1;
  padding: 0;
}

.release-select select:disabled {
  color: #111827;
}

.primary-nav {
  display: flex;
  gap: 20px;
  padding: 0 0 12px;
  font-size: 0.9rem;
  font-weight: 650;
}

.primary-nav a {
  text-decoration: none;
}

main {
  padding: 56px 0 80px;
}

.masthead {
  max-width: 790px;
  padding: 28px 0 56px;
  border-bottom: 1px solid #3B82F6;
}

.eyebrow {
  margin: 0 0 8px;
  color: #1D4ED8;
  font-size: 0.75rem;
  font-weight: 780;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(2.35rem, 7vw, 4.5rem);
  line-height: 1.04;
  letter-spacing: -0.045em;
}

h2 {
  margin: 0;
  font-size: clamp(1.35rem, 3vw, 2rem);
  line-height: 1.15;
  letter-spacing: -0.025em;
}

h3 {
  margin: 0;
  font-size: 1rem;
}

.lede {
  max-width: 720px;
  margin: 24px 0 0;
  color: #334155;
  font-size: clamp(1.15rem, 2.4vw, 1.4rem);
}

.release-date {
  margin: 24px 0 0;
  color: #64748B;
  font-size: 0.9rem;
  font-weight: 700;
}

section {
  margin-top: 56px;
}

.section-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.category-card,
.never-card,
.vendor-card,
.question-list-item {
  border: 1px solid #DBEAFE;
  background: #FFFFFF;
}

.category-card {
  padding: 24px;
}

.category-card h2 {
  margin-bottom: 24px;
}

.category-card dl {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  margin: 0 0 20px;
  background: #DBEAFE;
  border: 1px solid #DBEAFE;
}

.category-card dl div {
  padding: 14px;
  background: #F8FAFC;
}

.category-card dt {
  color: #64748B;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

.category-card dd {
  margin: 2px 0 0;
  font-size: 1.65rem;
  font-weight: 760;
}

.absence-number {
  color: #1D4ED8;
}

.category-card p:last-child {
  margin-bottom: 0;
  color: #334155;
}

.category-page {
  max-width: 1100px;
}

.back-link {
  display: inline-block;
  margin-bottom: 24px;
  font-size: 0.9rem;
  font-weight: 700;
}

.definition {
  max-width: 760px;
  margin: 20px 0 0;
  color: #334155;
  font-size: 1.1rem;
}

.category-record {
  padding: 24px;
  border-left: 4px solid #3B82F6;
  background: #EFF6FF;
}

.category-record h2 {
  margin-bottom: 12px;
}

.category-record p {
  margin: 10px 0 0;
}

.capture-line,
.muted {
  color: #64748B;
}

.disclosure {
  margin-top: 18px;
  color: #334155;
  font-weight: 700;
}

.disclosure-present {
  color: #1D4ED8;
}

.never-list {
  display: grid;
  gap: 12px;
}

.never-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 20px;
}

.rate-component {
  display: grid;
  gap: 2px;
}

.rate-label {
  color: #64748B;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

.rate-component strong {
  color: #111827;
  font-size: 0.9rem;
  font-weight: 720;
}

.table-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.sort-toggle {
  padding: 8px 12px;
  border: 1px solid #3B82F6;
  background: #FFFFFF;
  color: #1D4ED8;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 750;
  transition: background-color 150ms ease, color 150ms ease;
}

.sort-toggle:hover {
  background: #EFF6FF;
}

.table-disclaimer {
  max-width: 850px;
  margin: 0 0 16px;
  color: #334155;
  font-size: 0.9rem;
}

.desktop-table,
.presence-table {
  border: 1px solid #DBEAFE;
  background: #FFFFFF;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 16px;
  border-bottom: 1px solid #E5E7EB;
  text-align: left;
  vertical-align: top;
}

thead th {
  color: #334155;
  background: #EFF6FF;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

tbody tr:last-child th,
tbody tr:last-child td {
  border-bottom: 0;
}

tbody th {
  font-size: 0.95rem;
}

.mobile-cards,
.presence-list {
  display: none;
}

.grid-key {
  margin: 14px 0;
  color: #334155;
  font-size: 0.9rem;
}

.key-found,
.key-empty {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 7px;
  border: 1px solid #3B82F6;
  font-weight: 700;
}

.key-found {
  background: #3B82F6;
  color: #FFFFFF;
}

.key-empty {
  background: #FFFFFF;
  color: #1D4ED8;
}

.presence-table {
  overflow: hidden;
}

.presence-table th:first-child {
  min-width: 280px;
}

.presence-table td {
  padding: 8px;
  text-align: center;
}

.question-number {
  display: block;
  margin-bottom: 6px;
  color: #1D4ED8;
  font-size: 0.72rem;
  font-weight: 780;
  letter-spacing: 0.07em;
}

.question-base {
  display: block;
  margin-top: 8px;
  color: #64748B;
  font-size: 0.78rem;
  font-weight: 650;
}

.exclusion-inline {
  color: #1D4ED8;
}

.presence-cell {
  width: 100%;
  min-width: 58px;
  padding: 8px 4px;
  border: 1px solid #3B82F6;
  color: #1D4ED8;
  font-size: 0.75rem;
  font-weight: 750;
  cursor: pointer;
}

.presence-cell.found {
  background: #3B82F6;
  color: #FFFFFF;
}

.presence-cell.not-found {
  background: #FFFFFF;
}

.method-notes {
  padding: 24px;
  border: 1px solid #DBEAFE;
  background: #F8FAFC;
}

.method-notes h2 {
  margin-bottom: 16px;
}

.method-notes p {
  margin: 10px 0;
}

.prose-page,
.empty-page,
.validation-page {
  max-width: 760px;
}

.prose-page h1 {
  margin-bottom: 34px;
}

.prose-page h2 {
  margin-top: 34px;
  margin-bottom: 10px;
}

.prose-page p,
.prose-page li {
  color: #334155;
}

.prose-page ul {
  padding-left: 20px;
}

.download-list {
  display: grid;
  gap: 10px;
  padding: 0;
  list-style: none;
}

.download-list a,
.prose-page > p > a {
  display: inline-block;
  padding: 10px 12px;
  border: 1px solid #3B82F6;
  background: #FFFFFF;
  font-weight: 700;
}

.doi-slot {
  padding: 14px;
  border-left: 4px solid #3B82F6;
  background: #EFF6FF;
}

.site-footer {
  padding: 28px 0;
  border-top: 1px solid #DBEAFE;
  color: #64748B;
  font-size: 0.875rem;
}

@media (max-width: 680px) {
  .shell,
  main {
    width: min(100% - 24px, 1100px);
  }

  .header-row {
    min-height: 54px;
  }

  .release-select {
    text-align: right;
    font-size: 0.76rem;
  }

  .primary-nav {
    gap: 14px;
    padding-bottom: 10px;
    overflow: hidden;
    font-size: 0.82rem;
  }

  main {
    padding-top: 36px;
  }

  .masthead {
    padding-top: 12px;
    padding-bottom: 38px;
  }

  section {
    margin-top: 40px;
  }

  .category-grid {
    grid-template-columns: 1fr;
  }

  .category-card,
  .category-record,
  .method-notes {
    padding: 18px;
  }

  .never-card {
    display: block;
  }

  .never-card .rate-component {
    margin-top: 12px;
  }

  .table-header {
    align-items: start;
    flex-direction: column;
  }

  .desktop-table,
  .presence-table {
    display: none;
  }

  .mobile-cards,
  .presence-list {
    display: grid;
    gap: 12px;
  }

  .vendor-card,
  .question-list-item {
    padding: 18px;
  }

  .vendor-card .rate-component {
    margin-top: 14px;
  }

  .vendor-card p {
    margin-bottom: 0;
    color: #334155;
  }

  .question-list-item h3 {
    line-height: 1.35;
  }

  .question-list-item p {
    margin: 8px 0;
    color: #64748B;
  }

  .question-list-item ul {
    display: grid;
    gap: 6px;
    margin: 14px 0 0;
    padding: 0;
    list-style: none;
  }

  .question-list-item li {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding-top: 6px;
    border-top: 1px solid #E5E7EB;
  }
}

@media print {
  .site-header,
  .site-footer,
  .back-link,
  .sort-toggle,
  .sample-banner {
    display: none;
  }

  html,
  body {
    background: #FFFFFF;
  }

  main {
    width: 100%;
    padding: 0;
  }

  .desktop-table,
  .presence-table {
    display: block;
  }

  .mobile-cards,
  .presence-list {
    display: none;
  }

  .category-record,
  .method-notes {
    background: #FFFFFF;
  }

  a {
    color: #111827;
    text-decoration: none;
  }
}