:root {
  color-scheme: light;
  --bg: #f7f8fa;
  --surface: #ffffff;
  --surface-subtle: #fafbfc;
  --text: #17191c;
  --muted: #667085;
  --quiet: #98a2b3;
  --line: #e4e7ec;
  --line-strong: #d0d5dd;
  --accent: #2463a8;
  --accent-soft: #edf4fb;
  --blue: #2463a8;
  --blue-soft: #edf4fb;
  --orange: #a75a18;
  --orange-soft: #fff4e8;
  --teal: #18766f;
  --teal-soft: #eaf7f5;
  --rose: #a23f5f;
  --rose-soft: #faeef2;
  --danger: #b42318;
  --max-width: 1480px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Geist, "SF Pro Text", "SF Pro Display", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}
button, input, select { font: inherit; letter-spacing: 0; }
button, a { -webkit-tap-highlight-color: transparent; }
button:focus-visible, input:focus-visible, select:focus-visible, a:focus-visible, summary:focus-visible {
  outline: 3px solid rgba(36, 99, 168, .22);
  outline-offset: 2px;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: #ffffff;
  border-bottom: 1px solid var(--line);
}
.header-inner {
  width: min(100% - 40px, var(--max-width));
  min-height: 82px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.brand-block { min-width: 0; padding: 13px 0 12px; }
.eyebrow, .section-kicker {
  margin: 0 0 5px;
  color: var(--muted);
  font: 700 11px/1.2 "SFMono-Regular", Consolas, monospace;
  text-transform: uppercase;
}
h1, h2, h3, p { overflow-wrap: anywhere; }
h1 { margin: 0; font-size: 24px; line-height: 1.2; font-weight: 760; }
h2 { margin: 0; font-size: 22px; line-height: 1.3; font-weight: 740; }
h3 { margin: 0; font-size: 15px; line-height: 1.4; font-weight: 730; }
.build-meta { margin: 4px 0 0; color: var(--muted); font-size: 12px; }
.top-tabs { display: flex; align-self: stretch; }
.top-tab {
  position: relative;
  min-width: 104px;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-weight: 680;
  cursor: pointer;
}
.top-tab::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: -1px;
  height: 3px;
  background: transparent;
  transform: scaleX(.4);
  transition: transform .22s cubic-bezier(.16, 1, .3, 1), background .22s ease;
}
.top-tab:hover { color: var(--text); }
.top-tab.is-active { color: var(--text); }
.top-tab.is-active::after { background: var(--accent); transform: scaleX(1); }

main { width: min(100% - 40px, var(--max-width)); margin: 0 auto; padding: 26px 0 64px; }
.page-panel.is-hidden, .is-hidden { display: none !important; }

.scope-metrics {
  display: grid;
  grid-template-columns: 1.25fr repeat(4, 1fr);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}
.scope-metric { min-width: 0; padding: 18px 20px; border-right: 1px solid var(--line); }
.scope-metric:last-child { border-right: 0; }
.scope-metric span { display: block; color: var(--muted); font-size: 12px; font-weight: 650; }
.scope-metric strong {
  display: block;
  margin-top: 8px;
  font: 720 27px/1 "SFMono-Regular", Consolas, monospace;
  color: var(--text);
}
.scope-metric p { margin: 8px 0 0; color: var(--muted); font-size: 12px; line-height: 1.45; }

.cohort-band { padding: 28px 0 0; }
.cohort-summary {
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  background: var(--surface);
}
.cohort-row {
  display: grid;
  grid-template-columns: minmax(260px, 1.35fr) 220px minmax(300px, 1fr);
  align-items: center;
  min-height: 88px;
  border-bottom: 1px solid var(--line);
}
.cohort-row:last-child { border-bottom: 0; }
.cohort-copy, .cohort-funnel, .cohort-counts { min-width: 0; padding: 15px 18px; }
.cohort-copy p { margin: 5px 0 0; color: var(--muted); font-size: 11px; line-height: 1.5; }
.cohort-funnel {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  align-self: stretch;
  border-left: 1px solid var(--line);
  border-right: 1px solid var(--line);
  color: var(--muted);
  background: var(--surface-subtle);
  font: 650 11px/1.4 "SFMono-Regular", Consolas, monospace;
}
.cohort-funnel strong { color: var(--accent); font-size: 14px; }
.cohort-counts { display: flex; flex-wrap: wrap; gap: 6px; }
.cohort-token { padding: 5px 7px; border: 1px solid currentColor; border-radius: 3px; font-size: 10px; font-weight: 680; }
.cohort-exports {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  padding: 10px 18px 14px;
  border-top: 1px solid var(--line);
}
.cohort-exports a {
  padding: 6px 8px;
  border: 1px solid var(--line-strong);
  border-radius: 3px;
  color: var(--accent);
  background: var(--surface);
  font-size: 10px;
  font-weight: 700;
  text-decoration: none;
}
.cohort-exports a:hover { border-color: var(--accent); background: var(--accent-soft); }

.category-band { padding: 28px 0 26px; }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 36px; margin-bottom: 20px; }
.compact-heading { margin-bottom: 16px; }
.heading-note { max-width: 540px; margin: 0; color: var(--muted); font-size: 13px; line-height: 1.55; text-align: right; }
.category-tabs { display: grid; grid-template-columns: 1.1fr 1fr 1fr 1fr; gap: 10px; }
.category-tab {
  position: relative;
  min-width: 0;
  min-height: 128px;
  padding: 16px 17px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--category-color);
  border-radius: 6px;
  background: var(--surface);
  text-align: left;
  color: var(--text);
  cursor: pointer;
  transition: transform .18s cubic-bezier(.16, 1, .3, 1), border-color .18s ease, background .18s ease;
}
.category-tab:hover { border-color: var(--category-color); transform: translateY(-2px); }
.category-tab:active { transform: translateY(0); }
.category-tab.is-active { border-color: var(--category-color); background: var(--category-soft); }
.category-tab .category-name { display: block; font-size: 14px; font-weight: 740; }
.category-tab .category-number { display: block; margin: 13px 0 8px; font: 740 29px/1 "SFMono-Regular", Consolas, monospace; }
.category-tab .category-caption { display: block; color: var(--muted); font-size: 12px; line-height: 1.45; }
.combination-summary { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 18px; align-items: start; margin-top: 12px; padding: 14px 16px; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); }
.combination-heading span { display: block; color: var(--text); font-size: 12px; font-weight: 720; }
.combination-heading strong { display: block; margin-top: 5px; color: var(--muted); font: 600 10px/1.4 "SFMono-Regular", Consolas, monospace; }
.combination-list { display: flex; flex-wrap: wrap; gap: 7px; }
.combination-item { display: inline-flex; min-height: 29px; align-items: center; gap: 8px; padding: 4px 8px; border: 1px solid var(--line); border-radius: 4px; background: var(--surface-subtle); }
.combination-labels { display: flex; flex-wrap: wrap; gap: 4px; }
.combination-item strong { color: var(--text); font: 700 11px/1 "SFMono-Regular", Consolas, monospace; }

.sample-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 316px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}
.sample-main { min-width: 0; }
.list-heading { min-height: 112px; margin: 0; padding: 20px 22px; border-bottom: 1px solid var(--line); align-items: center; }
.sample-definition { max-width: 760px; margin: 7px 0 0; color: var(--muted); font-size: 13px; line-height: 1.5; }
.sample-count { color: var(--muted); font: 650 12px/1.4 "SFMono-Regular", Consolas, monospace; text-align: right; }

.filter-bar {
  display: grid;
  grid-template-columns: minmax(240px, 1.45fr) repeat(4, minmax(112px, .5fr)) auto auto;
  gap: 9px;
  align-items: end;
  padding: 14px 16px;
  background: var(--surface-subtle);
  border-bottom: 1px solid var(--line);
}
.filter-bar label { display: grid; gap: 5px; color: var(--muted); font-size: 11px; font-weight: 650; }
.filter-bar input[type="search"], .filter-bar select {
  width: 100%;
  height: 40px;
  min-width: 0;
  padding: 0 10px;
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  background: var(--surface);
  color: var(--text);
  font-size: 13px;
}
.toggle-field {
  display: flex !important;
  align-items: center;
  gap: 8px !important;
  min-height: 40px;
  padding: 0 9px;
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  background: var(--surface);
  white-space: nowrap;
}
.toggle-field input { width: 16px; height: 16px; accent-color: var(--accent); }
.secondary-button, .copy-button, .open-button {
  min-height: 40px;
  padding: 0 12px;
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  background: var(--surface);
  color: var(--text);
  font-size: 12px;
  font-weight: 680;
  text-decoration: none;
  cursor: pointer;
  transition: border-color .16s ease, background .16s ease, transform .16s ease;
}
.secondary-button:hover, .copy-button:hover, .open-button:hover { border-color: var(--accent); background: var(--accent-soft); }
.secondary-button:active, .copy-button:active, .open-button:active { transform: translateY(1px); }
.secondary-button:disabled { opacity: .4; cursor: not-allowed; }

.list-columns, .video-row {
  display: grid;
  grid-template-columns: minmax(340px, 1.38fr) minmax(270px, .92fr) 132px;
}
.list-columns {
  padding: 10px 16px;
  color: var(--muted);
  background: #f5f7f9;
  border-bottom: 1px solid var(--line);
  font-size: 11px;
  font-weight: 700;
}
.list-columns span:not(:first-child) { padding-left: 16px; }
.video-row { border-bottom: 1px solid var(--line); background: var(--surface); }
.video-row:hover { background: #fcfdff; }
.video-core, .url-cell, .metric-cell { min-width: 0; padding: 15px 16px; }
.url-cell, .metric-cell { border-left: 1px solid var(--line); }
.label-stack { display: flex; flex-wrap: wrap; gap: 5px; min-height: 21px; }
.content-label {
  display: inline-flex;
  align-items: center;
  min-height: 20px;
  padding: 0 6px;
  border: 1px solid currentColor;
  border-radius: 4px;
  font-size: 10px;
  line-height: 1;
  font-weight: 720;
}
.label-pure { color: var(--blue); background: var(--blue-soft); }
.label-montage { color: var(--orange); background: var(--orange-soft); }
.label-explain { color: var(--teal); background: var(--teal-soft); }
.label-story { color: var(--rose); background: var(--rose-soft); }
.video-title { margin-top: 8px; font-size: 14px; line-height: 1.48; }
.video-evidence, .video-id, .recognition-source { margin: 7px 0 0; color: var(--muted); font-size: 11px; line-height: 1.45; }
.recognition-source { color: #344054; font-weight: 680; }
.content-evidence { margin-top: 8px; border-left: 2px solid var(--line-strong); padding-left: 8px; }
.content-evidence summary { width: fit-content; color: var(--accent); cursor: pointer; font-size: 11px; font-weight: 680; }
.content-evidence p { margin: 7px 0 0; color: var(--muted); font-size: 11px; line-height: 1.55; }
.video-id { font-family: "SFMono-Regular", Consolas, monospace; }
.url-kind {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 700;
}
.url-kind[data-kind="media_direct_fallback"] { color: #9b3f3f; }
.raw-url {
  display: -webkit-box;
  overflow: hidden;
  color: var(--accent);
  font-size: 12px;
  line-height: 1.45;
  text-decoration: none;
  overflow-wrap: anywhere;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}
.raw-url:hover { text-decoration: underline; }
.url-actions { display: flex; gap: 7px; margin-top: 10px; }
.copy-button, .open-button { min-height: 31px; display: inline-flex; align-items: center; justify-content: center; padding: 0 9px; }
.open-button { color: var(--accent); }
.metric-cell { display: grid; align-content: start; gap: 7px; color: var(--muted); font: 600 11px/1.35 "SFMono-Regular", Consolas, monospace; }
.metric-cell strong { color: var(--text); font-weight: 700; }

.pagination { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 62px; padding: 10px 16px; }
.pagination p { margin: 0; color: var(--muted); font-size: 12px; }
.page-actions { display: flex; gap: 8px; }
.page-actions .secondary-button { min-width: 78px; }

.loading-state { display: grid; gap: 13px; padding: 25px 18px; }
.skeleton-line { height: 18px; width: 58%; border-radius: 3px; background: linear-gradient(90deg, #eef1f4 20%, #f8f9fa 48%, #eef1f4 76%); background-size: 240% 100%; animation: shimmer 1.3s ease infinite; }
.skeleton-line.wide { width: 88%; }
@keyframes shimmer { from { background-position: 100% 0; } to { background-position: -100% 0; } }
.state-message { min-height: 190px; display: grid; place-items: center; padding: 28px; color: var(--muted); text-align: center; }

.sample-aside { background: #fbfcfd; border-left: 1px solid var(--line); }
.aside-section { padding: 18px; border-bottom: 1px solid var(--line); }
.aside-section:last-child { border-bottom: 0; }
.aside-heading { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; }
.aside-heading span { color: var(--muted); font-size: 10px; }
.aside-summary { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 10px; margin-top: 15px; }
.aside-stat span { display: block; color: var(--muted); font-size: 10px; }
.aside-stat strong { display: block; margin-top: 4px; font: 700 16px/1 "SFMono-Regular", Consolas, monospace; }
.bar-chart { display: grid; gap: 9px; margin-top: 13px; }
.bar-row { display: grid; grid-template-columns: minmax(72px, auto) 1fr auto; gap: 7px; align-items: center; }
.bar-row span, .bar-row strong { font-size: 10px; color: var(--muted); }
.bar-row strong { min-width: 36px; text-align: right; font-family: "SFMono-Regular", Consolas, monospace; }
.bar-track { height: 6px; overflow: hidden; border-radius: 3px; background: #e9edf1; }
.bar-fill { height: 100%; min-width: 2px; border-radius: inherit; background: var(--category-color, var(--accent)); transform-origin: left center; animation: bar-in .35s cubic-bezier(.16, 1, .3, 1) both; }
@keyframes bar-in { from { transform: scaleX(0); } to { transform: scaleX(1); } }
.export-section p, .export-all-section p { margin: 8px 0 0; color: var(--muted); font-size: 12px; line-height: 1.5; }
.export-links { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 13px; }
.export-link { display: inline-flex; min-height: 30px; align-items: center; padding: 0 8px; border: 1px solid var(--line-strong); border-radius: 4px; color: var(--accent); background: var(--surface); font: 650 11px/1 "SFMono-Regular", Consolas, monospace; text-decoration: none; }
.export-link:hover { border-color: var(--accent); background: var(--accent-soft); }

.rules-intro, .rules-section { padding: 8px 0 34px; border-bottom: 1px solid var(--line-strong); }
.rules-section { padding-top: 34px; }
.definition-grid { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; background: var(--surface); }
.definition-item { min-width: 0; padding: 20px; border-bottom: 1px solid var(--line); }
.definition-item:nth-child(odd) { border-right: 1px solid var(--line); }
.definition-item:nth-last-child(-n + 2) { border-bottom: 0; }
.definition-item .definition-tag { display: inline-block; margin-bottom: 12px; color: var(--category-color); font-size: 12px; font-weight: 750; }
.definition-item .plain { margin: 0; font-size: 15px; line-height: 1.65; font-weight: 650; }
.definition-item .official { margin: 10px 0 0; color: var(--muted); font-size: 12px; line-height: 1.6; }

.schema-diagram { display: grid; grid-template-columns: 1fr 48px 1fr; align-items: stretch; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); overflow: hidden; }
.schema-axis { padding: 22px; }
.axis-label { display: flex; justify-content: space-between; gap: 18px; color: var(--muted); font-size: 12px; }
.axis-label strong { color: var(--text); }
.axis-options { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 18px; }
.schema-chip { display: inline-flex; min-height: 34px; align-items: center; padding: 0 10px; border: 1px solid currentColor; border-radius: 4px; font-size: 12px; font-weight: 720; }
.schema-chip.pure { color: var(--blue); background: var(--blue-soft); }
.schema-chip.montage { color: var(--orange); background: var(--orange-soft); }
.schema-chip.explain { color: var(--teal); background: var(--teal-soft); }
.schema-chip.story { color: var(--rose); background: var(--rose-soft); }
.schema-chip.neutral { color: var(--muted); background: #f4f5f7; }
.or { color: var(--quiet); font-size: 11px; }
.schema-join { display: grid; place-items: center; border-left: 1px solid var(--line); border-right: 1px solid var(--line); color: var(--muted); font: 700 20px/1 "SFMono-Regular", Consolas, monospace; background: var(--surface-subtle); }

.quality-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 1px; padding: 1px; border-radius: 6px; overflow: hidden; background: var(--line); }
.quality-metric { min-height: 126px; padding: 17px; background: var(--surface); }
.quality-metric span { color: var(--muted); font-size: 11px; }
.quality-metric strong { display: block; margin-top: 12px; font: 720 22px/1.1 "SFMono-Regular", Consolas, monospace; }
.quality-metric p { margin: 9px 0 0; color: var(--muted); font-size: 11px; line-height: 1.5; }
.quality-note { margin-top: 12px; padding: 13px 15px; border-left: 3px solid var(--accent); background: var(--accent-soft); color: #3a516c; font-size: 12px; line-height: 1.6; }
.review-action { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 12px; padding: 14px 15px; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); }
.review-action strong, .review-action span { display: block; }
.review-action strong { font-size: 12px; }
.review-action span { margin-top: 4px; color: var(--muted); font-size: 11px; line-height: 1.45; }
.review-action .secondary-button { display: inline-flex; flex: 0 0 auto; align-items: center; text-decoration: none; }

.decision-flow { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0; margin: 0; padding: 0; list-style: none; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; background: var(--surface); }
.decision-flow li { min-width: 0; min-height: 150px; padding: 18px; border-right: 1px solid var(--line); }
.decision-flow li:last-child { border-right: 0; }
.decision-flow span { color: var(--accent); font: 700 11px/1 "SFMono-Regular", Consolas, monospace; }
.decision-flow p { margin: 18px 0 0; color: var(--text); font-size: 12px; line-height: 1.62; }

.rule-details { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; background: var(--surface); }
.rule-item { padding: 20px; border-bottom: 1px solid var(--line); }
.rule-item:nth-child(odd) { border-right: 1px solid var(--line); }
.rule-item:nth-last-child(-n + 2) { border-bottom: 0; }
.rule-title-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.rule-title-row span { color: var(--category-color); font-size: 11px; font-weight: 720; }
.rule-copy { margin: 10px 0 0; color: var(--muted); font-size: 12px; line-height: 1.6; }
.rule-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 16px; }
.rule-columns h4 { margin: 0 0 7px; font-size: 11px; }
.rule-columns ul { margin: 0; padding-left: 17px; }
.rule-columns li { margin: 5px 0; color: var(--muted); font-size: 11px; line-height: 1.45; }

.term-lists { border: 1px solid var(--line); border-radius: 6px; overflow: hidden; background: var(--surface); }
.term-group { border-bottom: 1px solid var(--line); }
.term-group:last-child { border-bottom: 0; }
.term-group summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 54px; padding: 0 16px; cursor: pointer; font-size: 12px; font-weight: 690; }
.term-group summary::marker { color: var(--muted); }
.term-count { color: var(--muted); font: 600 10px/1 "SFMono-Regular", Consolas, monospace; }
.term-cloud { display: flex; flex-wrap: wrap; gap: 6px; padding: 0 16px 16px; }
.term { padding: 5px 7px; border: 1px solid var(--line); border-radius: 3px; background: var(--surface-subtle); color: #475467; font: 600 10px/1.2 "SFMono-Regular", Consolas, monospace; }
.export-all-section { display: flex; align-items: flex-end; justify-content: space-between; gap: 28px; border-bottom: 0; }

@media (max-width: 1180px) {
  .scope-metrics { grid-template-columns: repeat(3, 1fr); }
  .scope-metric:nth-child(3) { border-right: 0; }
  .scope-metric:nth-child(-n + 3) { border-bottom: 1px solid var(--line); }
  .sample-workspace { grid-template-columns: minmax(0, 1fr) 280px; }
  .filter-bar { grid-template-columns: minmax(220px, 1fr) repeat(2, 130px); }
  .filter-bar .toggle-field, .filter-bar .secondary-button { align-self: stretch; }
  .list-columns, .video-row { grid-template-columns: minmax(300px, 1.25fr) minmax(240px, .9fr) 118px; }
}

@media (max-width: 900px) {
  .header-inner, main { width: min(100% - 28px, var(--max-width)); }
  .sample-workspace { grid-template-columns: 1fr; }
  .sample-aside { border-left: 0; border-top: 1px solid var(--line); display: grid; grid-template-columns: repeat(2, 1fr); }
  .aside-section { border-right: 1px solid var(--line); }
  .category-tabs { grid-template-columns: 1fr 1fr; }
  .category-tab { min-height: 112px; }
  .list-columns, .video-row { grid-template-columns: minmax(280px, 1fr) minmax(230px, .78fr); }
  .list-columns span:last-child, .metric-cell { display: none; }
  .quality-grid { grid-template-columns: 1fr 1fr; }
  .decision-flow { grid-template-columns: 1fr 1fr; }
  .decision-flow li { min-height: 124px; border-bottom: 1px solid var(--line); }
  .decision-flow li:nth-child(even) { border-right: 0; }
  .decision-flow li:last-child { border-bottom: 0; }
  .definition-grid, .rule-details { grid-template-columns: 1fr; }
  .definition-item, .rule-item { border-right: 0 !important; border-bottom: 1px solid var(--line) !important; }
  .definition-item:last-child, .rule-item:last-child { border-bottom: 0 !important; }
  .schema-diagram { grid-template-columns: 1fr; }
  .schema-join { min-height: 38px; border: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .cohort-row { grid-template-columns: minmax(220px, 1fr) 210px; }
  .cohort-counts { grid-column: 1 / -1; border-top: 1px solid var(--line); }
}

@media (max-width: 640px) {
  .app-header { position: static; }
  .header-inner { width: 100%; min-height: 0; padding: 0 14px; display: block; }
  .brand-block { padding: 14px 0 10px; }
  .eyebrow { display: none; }
  h1 { font-size: 20px; }
  h2 { font-size: 19px; }
  .top-tabs { height: 46px; margin: 0 -14px; border-top: 1px solid var(--line); }
  .top-tab { flex: 1; min-width: 0; }
  main { width: 100%; padding: 0 0 40px; }
  .scope-metrics { grid-template-columns: 1fr 1fr; border-left: 0; border-right: 0; border-radius: 0; }
  .scope-metric { min-height: 104px; padding: 14px; border-bottom: 1px solid var(--line); }
  .scope-metric:nth-child(odd) { border-right: 1px solid var(--line); }
  .scope-metric:nth-child(even) { border-right: 0; }
  .scope-metric:first-child { grid-column: 1 / -1; border-right: 0; }
  .scope-metric strong { font-size: 23px; }
  .category-band, .rules-intro, .rules-section { padding: 22px 14px; }
  .cohort-band { padding: 22px 14px 0; }
  .cohort-row { display: block; }
  .cohort-copy, .cohort-funnel, .cohort-counts { padding: 13px; }
  .cohort-funnel { justify-content: flex-start; border: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .cohort-counts { border-top: 0; }
  .section-heading { display: block; margin-bottom: 15px; }
  .heading-note { max-width: none; margin-top: 7px; text-align: left; }
  .category-tabs { gap: 8px; }
  .category-tab { min-height: 108px; padding: 13px; }
  .category-tab .category-number { font-size: 24px; }
  .combination-summary { grid-template-columns: 1fr; gap: 10px; margin: 10px 14px 0; }
  .sample-workspace { border-left: 0; border-right: 0; border-radius: 0; }
  .list-heading { min-height: 0; padding: 16px 14px; display: block; }
  .sample-count { margin-top: 8px; text-align: left; }
  .filter-bar { grid-template-columns: 1fr 1fr; padding: 12px 14px; }
  .search-field { grid-column: 1 / -1; }
  .toggle-field, #reset-filters { min-height: 40px; }
  .list-columns { display: none; }
  .video-row { display: block; padding: 0; }
  .video-core, .url-cell { padding: 14px; }
  .url-cell { border-left: 0; border-top: 1px dashed var(--line); }
  .raw-url { -webkit-line-clamp: 2; }
  .metric-cell { display: flex; border: 0; padding: 0 14px 14px; }
  .url-actions a, .url-actions button { flex: 1; min-height: 44px; }
  .pagination { padding: 10px 14px; }
  .pagination p { max-width: 45%; }
  .sample-aside { grid-template-columns: 1fr; }
  .aside-section { border-right: 0; }
  .quality-grid { grid-template-columns: 1fr 1fr; }
  .quality-metric { min-height: 114px; padding: 14px; }
  .review-action { display: block; }
  .review-action .secondary-button { width: 100%; justify-content: center; margin-top: 12px; }
  .decision-flow { grid-template-columns: 1fr; }
  .decision-flow li { min-height: 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .rule-columns { grid-template-columns: 1fr; gap: 12px; }
  .export-all-section { display: block; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}