/* Standards directory · quiet institutional library */
body[data-page="standards"] {
  --site-header-height: 60px;
  --container: 1380px;
  --search-paper: #fbfaf6;
  --search-panel: #fffefa;
  --search-soft: #f4f1ea;
  --search-soft-green: #edf3ee;
  --search-line: #dedbd2;
  --search-line-strong: #c8c5bb;
  --search-ink: #172d25;
  --search-text: #28352f;
  --search-muted: #626c66;
  --search-green: #143b2e;
  --search-green-hover: #0e2f24;
  --search-accent: #b35e34;
  --search-success: #397254;
  background: var(--search-paper);
}

body[data-page="standards"] .portal-utility { display: none; }
body[data-page="standards"] .site-header {
  height: var(--site-header-height);
  background: color-mix(in srgb, var(--search-paper) 96%, transparent);
}
body[data-page="standards"] .header-inner { height: var(--site-header-height); }
body[data-page="standards"] .nav-primary[aria-current="page"]::after { background: var(--search-accent); }

.standards-page {
  min-height: calc(100vh - var(--site-header-height));
  color: var(--search-text);
  background: var(--search-paper);
}
.standards-page :where(h1, h2, h3, p, dl, dd) { margin: 0; }

/* Compact page introduction */
.standards-masthead {
  border-bottom: 1px solid var(--search-line);
  background: var(--search-paper);
}
.standards-masthead-top {
  display: flex;
  min-height: 50px;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid color-mix(in srgb, var(--search-line) 70%, transparent);
}
.standards-breadcrumb {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--search-muted);
  font-size: 12px;
}
.standards-breadcrumb a { transition: color 180ms ease; }
.standards-breadcrumb a:hover { color: var(--search-green); }
.standards-breadcrumb span[aria-hidden] { color: var(--search-line-strong); }
.standards-service-state {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--search-muted);
  font-size: 12px;
}
.standards-service-state i,
.standards-system-state i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--search-success);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--search-success) 12%, transparent);
}
.standards-service-state[data-state="checking"] i,
.standards-service-state:not([data-state]) i,
.standards-service-state[data-state="unknown"] i { background: var(--search-line-strong); box-shadow: none; }
.standards-service-state[data-state="unknown"] { color: var(--search-accent); }

.standards-masthead-grid {
  display: grid;
  grid-template-columns: minmax(300px, .72fr) minmax(520px, 1.65fr);
  align-items: center;
  gap: clamp(46px, 6vw, 100px);
  padding-top: 26px;
  padding-bottom: 20px;
}
.standards-kicker {
  display: none;
}
.standards-masthead h1 {
  color: var(--search-ink);
  font-family: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  font-size: clamp(36px, 3.2vw, 44px);
  font-weight: 650;
  letter-spacing: -.055em;
  line-height: 1.12;
}
.standards-lead {
  display: none;
}

/* Search is the primary action, not a separate dashboard band */
.standards-command-bar { min-width: 0; }
.standards-toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
}
.standards-search { position: relative; min-width: 0; }
.standards-search input {
  width: 100%;
  height: 58px;
  padding: 0 130px 0 20px;
  border: 1px solid var(--search-line-strong);
  border-radius: 4px;
  outline: 0;
  color: var(--search-ink);
  background: var(--search-panel);
  box-shadow: 0 6px 20px rgba(33, 47, 40, .035);
  font-size: 15px;
  transition: border-color 180ms ease, box-shadow 180ms ease;
}
.standards-search input::placeholder { color: #737b76; }
.standards-search input:focus {
  border-color: var(--search-green);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--search-green) 10%, transparent);
}
.standards-search-label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
.standards-search > kbd {
  position: absolute;
  z-index: 2;
  top: 19px;
  right: 113px;
  padding: 1px 6px;
  border: 1px solid var(--search-line);
  border-radius: 3px;
  color: var(--search-muted);
  background: var(--search-soft);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 9px;
}
.standards-search button {
  position: absolute;
  top: 0;
  right: 0;
  width: 100px;
  height: 58px;
  border: 0;
  border-radius: 0 4px 4px 0;
  color: #fff;
  background: var(--search-green);
  cursor: pointer;
  font-size: 14px;
  font-weight: 650;
  transition: background-color 180ms ease, transform 180ms ease;
}
.standards-search button:hover { background: var(--search-green-hover); }
.standards-search button:active { transform: translateY(1px); }
.standards-search button:disabled { opacity: .58; cursor: wait; }
.standards-clear {
  min-width: 62px;
  border: 0;
  color: var(--search-muted);
  background: transparent;
  cursor: pointer;
  font-size: 12px;
}
.standards-clear:hover { color: var(--search-green); }
.standards-clear:focus-visible,
.standards-search button:focus-visible { outline: 3px solid color-mix(in srgb, var(--search-green) 20%, transparent); outline-offset: 2px; }

.standards-quick-words {
  display: flex;
  min-height: 30px;
  align-items: end;
  gap: 7px;
  color: var(--search-muted);
  font-size: 12px;
}
.standards-quick-words span { margin-right: 3px; }
.standards-quick-words button {
  padding: 2px 6px;
  border: 0;
  border-bottom: 1px solid var(--search-line);
  color: var(--search-muted);
  background: transparent;
  cursor: pointer;
  font-size: 12px;
}
.standards-quick-words button:hover,
.standards-quick-words button:focus-visible { border-color: var(--search-accent); color: var(--search-ink); }

.standards-category-tabs {
  display: flex;
  min-height: 58px;
  align-items: end;
  gap: clamp(28px, 4vw, 66px);
  overflow-x: auto;
  scrollbar-width: none;
}
.standards-category-tabs::-webkit-scrollbar { display: none; }
.standards-tabs-hint { display: none; }
.standards-category-tabs button {
  position: relative;
  flex: 0 0 auto;
  height: 58px;
  padding: 0 2px 16px;
  border: 0;
  color: var(--search-text);
  background: transparent;
  cursor: pointer;
  font-size: 14px;
  white-space: nowrap;
}
.standards-category-tabs button::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 3px;
  background: var(--search-accent);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 300ms cubic-bezier(.16, 1, .3, 1);
}
.standards-category-tabs button:hover,
.standards-category-tabs button[aria-pressed="true"] { color: var(--search-ink); }
.standards-category-tabs button[aria-pressed="true"]::after {
  transform: scaleX(1);
  transform-origin: left;
}

.mobile-filters { display: none; }

/* Results, filters and record preview live on one continuous surface */
.standards-workbench {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  grid-template-areas: "results detail";
  align-items: start;
  column-gap: 48px;
  padding-top: 24px;
}
.standards-sidebar {
  display: grid;
  min-height: 118px;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: 0 22px;
  position: static;
  top: auto;
  height: auto;
  min-width: 0;
  padding: 0;
  border-right: 0;
  border-block: 1px solid var(--search-line);
  background: transparent;
}
.standards-sidebar-head {
  display: contents;
}
.standards-sidebar-head > span {
  grid-column: 1;
  grid-row: 1;
  align-self: center;
  min-height: 43px;
  padding-top: 15px;
  color: var(--search-ink);
  font-size: 13px;
  font-weight: 650;
}
.standards-sidebar-head > span::after {
  margin-left: 12px;
  color: var(--search-muted);
  content: "按来源、状态与发布时间缩小结果范围";
  font-size: 11px;
  font-weight: 400;
}
.standards-sidebar-head > button {
  grid-column: 2;
  grid-row: 1;
  align-self: center;
  padding: 8px 0 8px 12px;
  border: 0;
  color: var(--search-muted);
  background: transparent;
  cursor: pointer;
  font-size: 12px;
}
.standards-sidebar-head > button:hover { color: var(--search-accent); }
.standards-filters {
  grid-column: 1 / -1;
  grid-row: 2;
  display: grid;
  grid-template-columns: repeat(5, minmax(100px, 1fr));
  gap: 1px;
  min-height: 74px;
  align-items: stretch;
  border-top: 1px solid var(--search-line);
  background: var(--search-line);
}
.filter-group {
  display: grid;
  grid-template-rows: auto 1fr;
  align-content: center;
  gap: 4px;
  min-width: 0;
  padding: 11px 14px 10px;
  background: color-mix(in srgb, var(--search-soft) 72%, var(--search-paper));
  transition: background-color 180ms ease;
}
.filter-group:focus-within { background: var(--search-soft-green); }
.filter-group label {
  display: block;
  margin: 0;
  color: var(--search-muted);
  font-size: 11px;
  font-weight: 560;
  white-space: nowrap;
}
.filter-group .control {
  width: 100%;
  height: 34px;
  min-height: 34px;
  padding: 0 24px 0 0;
  border: 0;
  border-radius: 0;
  outline: 0;
  color: var(--search-text);
  background-color: transparent;
  font-size: 13px;
  font-weight: 520;
}
.filter-group .control:focus { box-shadow: inset 0 -2px var(--search-accent); }
.filter-group.is-disabled { opacity: .52; }
.standards-system-state,
.standards-safety { display: none; }

.results-panel {
  grid-area: results;
  min-width: 0;
  overflow: visible;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}
.results-head {
  display: flex;
  min-height: 54px;
  align-items: center;
  justify-content: space-between;
  padding: 0;
  border-bottom: 1px solid var(--search-line-strong);
}
.results-head > div { display: flex; align-items: baseline; gap: 20px; }
.results-head strong { color: var(--search-ink); font-size: 17px; font-weight: 650; }
.results-head span,
.results-head > p { color: var(--search-muted); font-size: 12px; }
.source-warnings {
  margin: 0 !important;
  padding: 11px 14px;
  border-bottom: 1px solid color-mix(in srgb, var(--search-accent) 35%, var(--search-line));
  color: #744225;
  background: color-mix(in srgb, var(--search-accent) 7%, transparent);
  font-size: 13px;
  line-height: 1.55;
}
.source-warnings[hidden] { display: none; }
html[data-theme="dark"] .source-warnings { color: #e0aa88; }

.result-list {
  max-height: none;
  overflow: visible;
}
.standard-result {
  position: relative;
  display: grid;
  width: 100%;
  min-height: 104px;
  grid-template-columns: 140px minmax(0, 1fr) 105px 22px;
  align-items: center;
  gap: 24px;
  padding: 17px 8px 17px 18px;
  border: 0;
  border-bottom: 1px solid var(--search-line);
  outline: 0;
  color: inherit;
  background: transparent;
  cursor: pointer;
  font: inherit;
  text-align: left;
  transition: background-color 220ms ease, padding-left 280ms cubic-bezier(.16, 1, .3, 1);
}
.standard-result::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 2px;
  background: transparent;
  content: "";
}
.standard-result-shell { position: relative; display: block; }
.standard-result:hover,
.standard-result[aria-pressed="true"] {
  padding-left: 24px;
  background: color-mix(in srgb, var(--search-soft) 76%, transparent);
}
.standard-result[aria-pressed="true"]::before { background: var(--search-accent); }
.standard-result:focus-visible { box-shadow: inset 0 0 0 2px color-mix(in srgb, var(--search-green) 58%, transparent); }
.standard-code {
  color: var(--search-ink);
  font-family: "Iowan Old Style", "Times New Roman", serif;
  font-size: 13px;
  line-height: 1.45;
}
.standard-copy { min-width: 0; }
.standard-result h2 {
  color: var(--search-ink);
  font-size: 16px;
  font-weight: 620;
  letter-spacing: -.012em;
  line-height: 1.5;
}
.standard-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 5px 13px;
  margin-top: 7px;
  color: var(--search-muted);
  font-size: 12px;
}
.standard-state { display: grid; gap: 5px; justify-items: start; }
.status-badge {
  color: var(--search-success);
  font-size: 12px;
  white-space: nowrap;
}
.status-badge.upcoming { color: #9a6b28; }
.status-badge.withdrawn { color: #9b5a4d; }
.standard-date { color: var(--search-muted); font-size: 12px; }
.standard-arrow {
  position: absolute;
  z-index: 2;
  top: 50%;
  right: 7px;
  display: grid;
  width: 34px;
  height: 42px;
  place-items: center;
  color: var(--search-accent);
  font-family: Arial, sans-serif;
  font-size: 19px;
  transform: translateY(-50%);
  transition: color 180ms ease, transform 220ms ease, background-color 180ms ease;
}
.standard-arrow:hover,
.standard-arrow:focus-visible { color: var(--search-ink); background: var(--search-soft-green); }
.standard-result-shell:hover .standard-arrow,
.standard-result[aria-pressed="true"] + .standard-arrow { transform: translate(3px, -50%); }

.pagination {
  display: flex;
  min-height: 64px;
  align-items: center;
  justify-content: center;
  gap: 12px;
  border-top: 1px solid var(--search-line);
}
.pagination[hidden] { display: none !important; }
.pagination button {
  min-height: 32px;
  padding: 0 12px;
  border: 1px solid var(--search-line);
  border-radius: 3px;
  color: var(--search-ink);
  background: transparent;
  cursor: pointer;
  font-size: 12px;
}
.pagination button:hover:not(:disabled) { border-color: var(--search-green); }
.pagination button:disabled { opacity: .35; cursor: not-allowed; }
.pagination span { color: var(--search-muted); font-size: 12px; }

.detail-panel {
  position: static;
  grid-area: detail;
  align-self: start;
  min-width: 0;
  max-height: none;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--search-line) 76%, transparent);
  border-radius: 22px;
  background: var(--search-panel);
  box-shadow: 0 18px 52px rgba(40, 53, 47, .08), 0 2px 10px rgba(40, 53, 47, .045);
}

.detail-verification {
  display: grid;
  gap: 10px;
  margin-top: 12px;
  padding: 16px;
  border: 0;
  border-radius: 14px;
  background: color-mix(in srgb, var(--search-soft-green) 88%, #fff);
}
.detail-verification > div:first-child { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.detail-verification > div:first-child strong { color: var(--search-ink); font-size: 12px; font-weight: 680; }
.detail-verification > div:first-child button { padding: 0; border: 0; color: var(--search-accent); background: transparent; cursor: pointer; font-size: 11px; }
.detail-verification > p { margin: 0; color: var(--search-muted); font-size: 11px; line-height: 1.55; }
.detail-verification-input { display: grid; grid-template-columns: 96px minmax(0, 1fr); gap: 7px; }
.detail-verification-input img { width: 96px; height: 38px; border: 1px solid var(--search-line); object-fit: cover; background: #fff; }
.detail-verification-input input { min-width: 0; height: 38px; padding: 0 9px; border: 1px solid var(--search-line-strong); outline: 0; color: var(--search-ink); background: var(--search-panel); font: inherit; font-size: 12px; letter-spacing: .12em; }
.detail-verification-input input:focus { border-color: var(--search-green); }
.detail-verification-actions { display: grid; grid-template-columns: 1fr; gap: 6px; }
.detail-verification-actions .button { width: 100%; min-height: 38px; }
.detail-head {
  display: flex;
  min-height: 52px;
  align-items: center;
  justify-content: space-between;
  padding: 0 22px;
  margin-left: 0;
  border-bottom: 1px solid color-mix(in srgb, var(--search-line) 65%, transparent);
  background: color-mix(in srgb, var(--search-soft-green) 38%, var(--search-panel));
}
.detail-head strong {
  color: var(--search-ink);
  font-size: 15px;
  font-weight: 720;
}
.detail-close {
  display: none;
  min-height: 32px;
  padding: 0 9px;
  border: 1px solid var(--search-line);
  border-radius: 3px;
  color: var(--search-muted);
  background: transparent;
  cursor: pointer;
  font-size: 12px;
}
.detail-body {
  max-height: none;
  padding: 22px;
  overflow: visible;
}
.detail-summary {
  padding: 21px;
  border-radius: 17px;
  background: var(--search-soft-green);
}
.detail-summary-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 11px;
}
.detail-code {
  margin: 0 !important;
  color: var(--search-green);
  font-family: "Iowan Old Style", "Times New Roman", serif;
  font-size: 15px;
  font-weight: 700;
}
.detail-status {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  padding: 0 10px;
  border-radius: 999px;
  color: var(--search-success);
  background: color-mix(in srgb, var(--search-success) 10%, #fff);
  font-size: 10px;
  font-weight: 700;
}
.detail-title {
  margin: 0 !important;
  color: var(--search-ink);
  font-family: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  font-size: 22px;
  font-weight: 720;
  letter-spacing: -.025em;
  line-height: 1.42;
}
.detail-fields {
  display: grid;
  gap: 8px;
  margin-top: 14px;
}
.detail-row {
  display: grid;
  min-height: 48px;
  grid-template-columns: 76px 1fr;
  align-items: start;
  gap: 14px;
  padding: 13px 14px;
  border: 0;
  border-radius: 11px;
  background: var(--search-soft);
  font-size: 12px;
  line-height: 1.55;
}
.detail-row dt { color: var(--search-muted); }
.detail-row dd { color: var(--search-text); overflow-wrap: anywhere; }
.detail-action { display: grid; gap: 12px; margin-top: 14px; }
.detail-source-group {
  display: grid;
  gap: 9px;
  padding: 16px;
  border-radius: 14px;
  background: #edf3f7;
}
.detail-source-group-alt {
  margin-top: 0;
  background: #f8eee7;
}
.detail-source-group-alt .detail-access-title { color: var(--search-accent); }
.detail-source-group-alt[data-state="unavailable"] .download-status { color: var(--search-muted); }
.detail-access-title { color: var(--search-ink); font-size: 13px; font-weight: 650; }
.detail-action .button {
  display: inline-flex;
  width: 100%;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  border-radius: 11px;
  font-size: 12px;
  font-weight: 680;
}
.detail-action .button:not(.button-light) { color: #fff; background: var(--search-green); }
.detail-action .button-light { color: var(--search-accent); border: 1px solid color-mix(in srgb, var(--search-accent) 55%, var(--search-line)); background: transparent; }
.detail-full-link {
  display: inline-flex;
  width: 100%;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  margin-top: 0;
  padding: 0 16px;
  border: 0;
  border-radius: 12px;
  color: #fff;
  background: var(--search-green);
  box-shadow: 0 10px 22px rgba(20, 59, 46, .14);
  font-size: 12px;
  font-weight: 700;
  transition: transform 260ms cubic-bezier(.16, 1, .3, 1), box-shadow 220ms ease;
}
.detail-full-link:hover,
.detail-full-link:focus-visible { color: #fff; transform: translateY(-2px); box-shadow: 0 15px 28px rgba(20, 59, 46, .2); }
.download-status { color: var(--search-muted); font-size: 12px; line-height: 1.6; }
.download-status:empty { display: none; }
.source-notice {
  margin-top: 18px !important;
  padding: 13px 14px;
  border: 0;
  border-radius: 11px;
  background: var(--search-soft);
  color: var(--search-muted);
  font-size: 12px;
  line-height: 1.65;
}

.app-state {
  display: grid;
  min-height: 350px;
  place-items: center;
  padding: 36px;
  color: var(--search-muted);
  text-align: center;
}
.app-state > div { max-width: 320px; }
.app-state-icon { display: none; }
.app-state strong,
.app-state span { display: block; }
.app-state strong { margin-bottom: 7px; color: var(--search-ink); font-size: 13px; }
.app-state span { font-size: 12px; line-height: 1.7; }
.loading-ring {
  width: 26px;
  height: 26px;
  margin: 0 auto 16px;
  border: 2px solid var(--search-line);
  border-top-color: var(--search-accent);
  border-radius: 50%;
  animation: standardsSpin .8s linear infinite;
}
@keyframes standardsSpin { to { transform: rotate(360deg); } }

body.standards-feedback-open { overflow: hidden; }
.standards-feedback {
  position: fixed;
  z-index: 2400;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  opacity: 0;
  transition: opacity 220ms ease;
}
.standards-feedback[hidden] { display: none !important; }
.standards-feedback.is-open { opacity: 1; }
.standards-feedback-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(28, 40, 35, .32);
  backdrop-filter: blur(12px) saturate(.82);
}
.standards-feedback-dialog {
  position: relative;
  width: min(100%, 470px);
  padding: 34px;
  border: 1px solid rgba(99, 127, 156, .2);
  border-radius: 24px;
  outline: 0;
  background: var(--search-panel);
  box-shadow: 0 28px 90px rgba(35, 49, 42, .22), 0 4px 14px rgba(35, 49, 42, .08);
  transform: translateY(16px) scale(.985);
  transition: transform 360ms cubic-bezier(.16, 1, .3, 1);
}
.standards-feedback.is-open .standards-feedback-dialog { transform: translateY(0) scale(1); }
.standards-feedback-icon {
  display: grid;
  width: 54px;
  height: 54px;
  margin-bottom: 22px;
  place-items: center;
  border-radius: 17px;
  background: #eaf1f6;
}
.standards-feedback-icon img { width: 26px; height: 26px; }
.standards-feedback[data-mode="loading"] .standards-feedback-icon img { animation: standardsSpin .82s linear infinite; }
.standards-feedback-kicker { margin: 0 0 7px !important; color: #365a78; font-size: 11px; font-weight: 760; letter-spacing: .12em; }
.standards-feedback-dialog h2 { margin: 0; color: var(--search-ink); font-family: "Songti SC", "STSong", serif; font-size: 29px; font-weight: 720; letter-spacing: -.03em; }
.standards-feedback-dialog > p:last-of-type { margin: 12px 0 0 !important; color: var(--search-muted); font-size: 13px; line-height: 1.75; }
.standards-feedback-progress { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 24px; }
.standards-feedback-progress[hidden] { display: none !important; }
.standards-feedback-progress span { min-height: 34px; padding: 9px 8px; border-radius: 10px; color: var(--search-muted); background: var(--search-soft); font-size: 10px; font-weight: 650; text-align: center; }
.standards-feedback-progress span.is-active { color: #fff; background: #365a78; }
.standards-feedback-progress span.is-complete { color: #536f59; background: #edf2e8; }
.standards-feedback-confirm { width: 100%; min-height: 48px; margin-top: 26px; border: 0; border-radius: 13px; color: #fff; background: #365a78; box-shadow: 0 12px 24px rgba(54,90,120,.18); cursor: pointer; font: inherit; font-size: 13px; font-weight: 720; }
.standards-feedback-confirm[hidden] { display: none !important; }

.standards-footnote { padding: 18px 0 56px; color: var(--search-muted); font-size: 12px; text-align: right; }

/* Dark mode keeps the same quiet hierarchy */
html[data-theme="dark"] body[data-page="standards"] {
  --search-paper: #111713;
  --search-panel: #161d18;
  --search-soft: #1b231e;
  --search-soft-green: #1b2921;
  --search-line: #303a33;
  --search-line-strong: #465149;
  --search-ink: #edf2ee;
  --search-text: #d6ded8;
  --search-muted: #96a098;
  --search-green: #b9d1c1;
  --search-green-hover: #c8ddcf;
  --search-accent: #d4875f;
  --search-success: #78b38c;
}
html[data-theme="dark"] body[data-page="standards"] .site-header { background: color-mix(in srgb, var(--search-paper) 94%, transparent); }
html[data-theme="dark"] .standards-search input { background: var(--search-panel); }
html[data-theme="dark"] .standards-search button,
html[data-theme="dark"] .detail-action .button:not(.button-light) { color: #112118; background: #b9d1c1; }
html[data-theme="dark"] .standards-search input::placeholder { color: #6f7971; }

@media (max-width: 1120px) {
  .standards-masthead-grid { grid-template-columns: minmax(260px, .62fr) minmax(440px, 1.4fr); gap: 42px; }
  .standards-workbench { grid-template-columns: minmax(0, 1fr) 290px; column-gap: 32px; }
  .standard-result { grid-template-columns: 118px minmax(0, 1fr) 88px 18px; gap: 16px; }
  .standards-sidebar-head > span { display: block; }
  .standards-filters { grid-column: 1 / -1; grid-template-columns: repeat(5, minmax(105px, 1fr)); }
}

@media (max-width: 960px) {
  body[data-page="standards"] { --site-header-height: 72px; }
  .standards-masthead-grid { grid-template-columns: 1fr; gap: 24px; padding-top: 30px; }
  .standards-title-block { max-width: 620px; }
  .standards-command-bar { width: 100%; }
  .standards-category-tabs { gap: 36px; }
  .mobile-filters {
    display: block;
    margin: 20px auto 0;
    padding: 0;
    border-top: 1px solid var(--search-line);
    border-bottom: 1px solid var(--search-line);
  }
  .mobile-filters summary { padding: 13px 0; color: var(--search-ink); cursor: pointer; font-size: 13px; font-weight: 650; }
  .mobile-filter-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; padding-bottom: 14px; }
  .mobile-filter-grid .control { width: 100%; height: 42px; border: 1px solid var(--search-line); border-radius: 3px; color: var(--search-text); background: var(--search-panel); font-size: 13px; }
  .mobile-filter-reset { min-height: 42px; border: 1px solid var(--search-line); border-radius: 3px; color: var(--search-accent); background: transparent; font-size: 13px; }
  .standards-workbench {
    grid-template-columns: minmax(0, 1fr) 270px;
    grid-template-areas: "results detail";
    padding-top: 12px;
  }
  .standards-sidebar { display: none; }
  .detail-panel { top: calc(var(--site-header-height) + 18px); }
}

@media (max-width: 760px) {
  .standards-workbench { grid-template-columns: 1fr; grid-template-areas: "results"; }
  .detail-panel { display: none; }
  .results-head > p { display: none; }
  .standard-result { grid-template-columns: 112px minmax(0, 1fr) 76px 16px; }
  body.standards-detail-open { overflow: hidden; }
  .detail-panel.mobile-open {
    position: fixed;
    z-index: 1200;
    inset: 0;
    display: block;
    max-height: none;
    overflow: hidden;
    border: 0;
    background: var(--search-paper);
  }
  .detail-panel.mobile-open .detail-head { position: sticky; z-index: 2; top: 0; margin-left: 0; padding: 0 18px; background: var(--search-paper); }
  .detail-panel.mobile-open .detail-body { max-height: calc(100vh - 52px); max-height: calc(100dvh - 52px); padding: 26px 20px; }
  .detail-panel.mobile-open .detail-close { display: inline-flex; align-items: center; }
}

@media (max-width: 640px) {
  body[data-page="standards"] { --site-header-height: 64px; }
  .standards-masthead-top { min-height: 42px; }
  .standards-service-state { display: none; }
  .standards-breadcrumb { gap: 6px; font-size: 12px; }
  .standards-masthead-grid { gap: 21px; padding-top: 25px; padding-bottom: 24px; }
  .standards-masthead h1 { font-size: 34px; }
  .standards-lead { margin-top: 9px !important; font-size: 13px; }
  .standards-toolbar { grid-template-columns: 1fr; }
  .standards-search input { height: 52px; padding-right: 96px; padding-left: 14px; font-size: 12px; }
  .standards-search > kbd { display: none; }
  .standards-search button { width: 86px; height: 52px; }
  .standards-clear { display: none; }
  .standards-category-tabs {
    min-height: 52px;
    gap: 26px;
    padding-right: 34px;
    scroll-padding-inline: 14px 34px;
    scroll-snap-type: x proximity;
    scrollbar-width: thin;
    scrollbar-color: var(--search-accent) transparent;
  }
  .standards-category-tabs::-webkit-scrollbar { display: block; height: 3px; }
  .standards-category-tabs::-webkit-scrollbar-thumb { background: var(--search-accent); }
  .standards-category-tabs button { height: 52px; padding-bottom: 14px; font-size: 13px; }
  .standards-category-tabs button { scroll-snap-align: start; }
  .standards-tabs-hint {
    display: block;
    margin: 4px auto 0;
    padding-bottom: 8px;
    color: var(--search-muted);
    font-size: 11px;
    text-align: right;
  }
  .mobile-filter-grid { grid-template-columns: 1fr; }
  .standards-workbench { width: min(calc(100% - 28px), var(--container)); }
  .results-head { min-height: 56px; }
  .results-head > div { gap: 12px; }
  .results-head strong { font-size: 15px; }
  .standard-result {
    min-height: 0;
    grid-template-columns: 1fr auto;
    gap: 7px 12px;
    padding: 16px 4px 16px 14px;
  }
  .standard-result:hover,
  .standard-result[aria-pressed="true"] { padding-left: 18px; }
  .standard-code { grid-column: 1; font-size: 12px; }
  .standard-copy { grid-column: 1 / -1; grid-row: 2; }
  .standard-state { grid-column: 1; grid-row: 3; display: flex; align-items: center; gap: 10px; }
  .standard-arrow { top: 50%; right: 0; }
  .standard-result h2 { font-size: 13px; }
  .standard-meta { font-size: 12px; }
  .app-state { min-height: 300px; }
  .detail-panel.mobile-open {
    position: fixed;
    z-index: 1200;
    inset: 0;
    display: block;
    max-height: none;
    height: 100vh;
    height: 100dvh;
    border: 0;
    background: var(--search-paper);
  }
  .detail-panel.mobile-open .detail-head { position: sticky; z-index: 2; top: 0; margin-left: 0; padding: 0 16px; background: var(--search-paper); }
  .detail-panel.mobile-open .detail-body { max-height: calc(100vh - 52px); max-height: calc(100dvh - 52px); padding: 24px 18px; }
  .detail-panel.mobile-open .detail-close { display: inline-flex; align-items: center; }
  .standards-footnote { padding-inline: 2px; text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  .result-list { scroll-behavior: auto; }
  .standard-result,
  .standard-arrow,
  .standards-category-tabs button::after { transition: none; }
  .loading-ring { animation: none; }
}

/* Dark detail preview: keep source cards and status chips inside the same
   layered dark material system instead of reusing light-mode fills. */
html[data-theme="dark"] body[data-page="standards"] .detail-status {
  color: #acd4b8;
  border: 1px solid color-mix(in srgb, var(--search-success) 34%, transparent);
  background: color-mix(in srgb, var(--search-success) 18%, var(--search-panel));
}

html[data-theme="dark"] body[data-page="standards"] .detail-source-group {
  border: 1px solid color-mix(in srgb, var(--theme-sage) 28%, var(--search-line));
  background: color-mix(in srgb, var(--theme-sage-soft) 72%, var(--search-panel));
}

html[data-theme="dark"] body[data-page="standards"] .detail-source-group-alt {
  border-color: color-mix(in srgb, var(--theme-warm) 30%, var(--search-line));
  background: color-mix(in srgb, var(--theme-warm-soft) 74%, var(--search-panel));
}

html[data-theme="dark"] body[data-page="standards"] .detail-verification {
  border: 1px solid color-mix(in srgb, var(--theme-sage) 22%, var(--search-line));
  background: color-mix(in srgb, var(--search-soft-green) 72%, var(--search-panel));
}

html[data-theme="dark"] body[data-page="standards"] .detail-full-link {
  color: #101612;
  background: var(--theme-lime);
  box-shadow: 0 12px 28px rgba(0, 0, 0, .22);
}

html[data-theme="dark"] body[data-page="standards"] .detail-full-link:hover,
html[data-theme="dark"] body[data-page="standards"] .detail-full-link:focus-visible {
  color: #101612;
  background: color-mix(in srgb, var(--theme-lime) 88%, white);
}

@media (max-width: 760px) {
  .detail-panel.mobile-open .detail-body {
    overflow-y: auto;
    overscroll-behavior: contain;
    scrollbar-gutter: stable;
  }
}

/* Mobile interaction pass: quick terms and horizontally scrollable category
   tabs remain compact, but no longer require precision taps. */
@media (max-width: 760px) {
  .standards-quick-words button {
    min-height: 36px;
    padding-inline: 10px;
  }

  .standards-category-tabs button {
    min-width: 44px;
  }
}