:root {
  color-scheme: light;
  --bg: #f4f6f5;
  --surface: #ffffff;
  --surface-subtle: #f1f3f2;
  --surface-hover: #e9eeeb;
  --ink: #17201d;
  --muted: #66716d;
  --line: #dce2df;
  --line-strong: #c5cfca;
  --accent: #176b55;
  --accent-hover: #125744;
  --accent-soft: #e3f1ec;
  --amber: #8a5a00;
  --amber-soft: #fff3d5;
  --danger: #9d3737;
  --danger-soft: #f9e7e7;
  --blue: #315f87;
  --blue-soft: #e8f0f7;
  --shadow: 0 12px 32px rgba(28, 39, 35, 0.1);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  overflow: hidden;
  background: var(--bg);
  color: var(--ink);
  letter-spacing: 0;
}

button, input, select, textarea { font: inherit; letter-spacing: 0; }
button, a { -webkit-tap-highlight-color: transparent; }
[hidden] { display: none !important; }

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background: #edf1ef;
}

.login-panel {
  width: min(100%, 390px);
  padding: 38px 36px 36px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: 22px;
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  font-size: 20px;
  font-weight: 750;
}

.brand-mark.small {
  width: 36px;
  height: 36px;
  margin: 0;
  font-size: 17px;
}

.eyebrow, .section-kicker {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  font-weight: 750;
  line-height: 1.4;
  text-transform: uppercase;
}

.login-panel h1 {
  margin: 5px 0 28px;
  font-size: 27px;
  line-height: 1.2;
}

.form-stack { display: grid; gap: 17px; }

label > span {
  display: block;
  margin-bottom: 7px;
  color: #39433f;
  font-size: 13px;
  font-weight: 650;
}

input, select, textarea {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  outline: none;
  background: #fff;
  color: var(--ink);
}

textarea {
  resize: vertical;
  line-height: 1.65;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(23, 107, 85, 0.13);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 8px 14px;
  border: 1px solid transparent;
  border-radius: 5px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 680;
  text-decoration: none;
}

.button:disabled { cursor: not-allowed; opacity: 0.52; }
.button.full { width: 100%; }
.button.primary { background: var(--accent); color: #fff; }
.button.primary:hover:not(:disabled) { background: var(--accent-hover); }
.button.secondary { border-color: var(--line-strong); background: #fff; color: var(--ink); }
.button.secondary:hover:not(:disabled), .button.quiet:hover:not(:disabled) { background: var(--surface-subtle); }
.button.quiet { padding-inline: 8px; background: transparent; color: #4d5853; }

.icon-button {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 5px;
  background: transparent;
  color: #53605b;
  cursor: pointer;
  font-size: 20px;
}

.icon-button:hover { border-color: var(--line); background: var(--surface-subtle); }

.form-error, .inline-error {
  margin: 0;
  padding: 10px 12px;
  border-left: 3px solid var(--danger);
  background: var(--danger-soft);
  color: #792a2a;
  font-size: 13px;
  line-height: 1.5;
}

.app-shell { min-height: 100vh; }

.topbar {
  position: relative;
  z-index: 10;
  display: grid;
  grid-template-columns: auto auto 1fr auto;
  align-items: center;
  gap: 28px;
  min-height: 68px;
  padding: 0 22px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.98);
}

.brand-row, .account-row, .library-summary { display: flex; align-items: center; }
.brand-row { gap: 11px; }
.brand-row h1 { margin: 1px 0 0; font-size: 17px; line-height: 1.2; }
.account-row { gap: 8px; }
.account-name { color: var(--muted); font-size: 12px; }
.library-summary { justify-content: center; gap: 22px; color: var(--muted); font-size: 12px; }
.library-summary strong { color: var(--ink); font-size: 15px; }

.primary-nav {
  display: flex;
  align-self: stretch;
  gap: 3px;
}

.primary-nav button {
  position: relative;
  min-width: 70px;
  padding: 0 10px;
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 13px;
  font-weight: 680;
}

.primary-nav button::after {
  content: "";
  position: absolute;
  right: 10px;
  bottom: 0;
  left: 10px;
  height: 2px;
  background: transparent;
}

.primary-nav button:hover { color: var(--ink); }
.primary-nav button.active { color: var(--accent); }
.primary-nav button.active::after { background: var(--accent); }

.library-workspace {
  display: grid;
  grid-template-columns: minmax(190px, 230px) minmax(280px, 350px) minmax(460px, 1fr);
  height: calc(100vh - 68px);
  max-width: 1720px;
  margin: 0 auto;
  background: var(--surface);
}

.anchor-panel, .session-panel, .detail-panel {
  min-width: 0;
  overflow: auto;
}

.anchor-panel, .session-panel { border-right: 1px solid var(--line); }
.anchor-panel { background: #f7f8f7; }

.panel-heading {
  position: sticky;
  z-index: 2;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 73px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  background: inherit;
}

.panel-heading h2 { margin: 3px 0 0; font-size: 16px; line-height: 1.25; }
.count-label { color: var(--muted); font-size: 12px; white-space: nowrap; }

.anchor-list { padding: 8px; }
.source-period-filter {
  display: grid;
  gap: 6px;
  margin: 14px 14px 8px;
}
.source-period-filter > span,
.anchor-list-label {
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
}
.source-period-filter select { width: 100%; }
.anchor-list-label { margin: 16px 16px 3px; }

.anchor-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  width: 100%;
  padding: 11px 10px;
  border: 1px solid transparent;
  border-radius: 5px;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  text-align: left;
}

.anchor-item:hover { background: var(--surface-hover); }
.anchor-item.active { border-color: #c8ddd5; background: var(--accent-soft); }
.anchor-item strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13px; }
.anchor-item span { color: var(--muted); font-size: 12px; }
.anchor-item small { grid-column: 1 / -1; margin-top: 4px; color: #7b8581; font-size: 10px; }

.session-panel { background: var(--surface); }
.session-heading { background: var(--surface); }
.session-list { display: grid; }

.session-item {
  position: relative;
  display: grid;
  width: 100%;
  min-height: 100px;
  padding: 14px 16px;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  text-align: left;
}

.session-item:hover { background: #f8faf9; }
.session-item.active { background: #eef5f2; }
.session-item.active::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--accent);
}

.session-title-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.session-title-row strong {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 14px;
}

.session-time { margin-top: 7px; color: var(--muted); font-size: 11px; }
.session-assets { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 10px; }

.asset-chip, .source-label, .status-label, .event-kind {
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  padding: 2px 7px;
  border-radius: 4px;
  background: var(--surface-subtle);
  color: #56615c;
  font-size: 10px;
  font-weight: 650;
}

.asset-chip.present { background: var(--accent-soft); color: var(--accent-hover); }
.source-label { background: var(--blue-soft); color: var(--blue); }
.status-label.ready { background: var(--accent-soft); color: var(--accent-hover); }
.status-label.processing { background: var(--amber-soft); color: var(--amber); }
.status-label.failed { background: var(--danger-soft); color: var(--danger); }

.load-more {
  width: calc(100% - 32px);
  min-height: 38px;
  margin: 14px 16px 24px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: #fff;
  color: #4c5853;
  cursor: pointer;
}

.load-more:hover { background: var(--surface-subtle); }

.empty-state {
  display: grid;
  justify-items: center;
  gap: 7px;
  padding: 56px 24px;
  color: var(--muted);
  text-align: center;
  font-size: 12px;
}

.empty-state strong { color: var(--ink); font-size: 14px; }
.detail-panel { background: #fbfcfb; }

.detail-empty {
  display: grid;
  justify-items: center;
  align-content: center;
  min-height: 100%;
  padding: 32px;
  color: var(--muted);
  text-align: center;
}

.empty-glyph {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-bottom: 15px;
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  color: var(--accent);
  font-size: 20px;
  font-weight: 750;
}

.detail-empty strong { color: var(--ink); }
.detail-empty p { max-width: 350px; margin: 8px 0 0; font-size: 13px; line-height: 1.6; }

.detail-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 28px 20px;
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.detail-context { display: flex; gap: 6px; margin-bottom: 9px; }
.detail-header h2 { margin: 0; overflow-wrap: anywhere; font-size: 22px; line-height: 1.35; }
.detail-header p { margin: 7px 0 0; color: var(--muted); font-size: 12px; line-height: 1.5; }

.media-stage {
  display: grid;
  grid-template-columns: minmax(220px, 430px) minmax(240px, 1fr);
  align-items: center;
  gap: 22px;
  padding: 20px 28px;
  border-bottom: 1px solid var(--line);
  background: #f0f3f1;
}

.media-stage video {
  width: 100%;
  max-height: 430px;
  border-radius: 6px;
  background: #101311;
}

.media-stage.audio-transcript-mode {
  position: sticky;
  z-index: 3;
  top: 0;
  grid-template-columns: minmax(0, 1fr);
  min-height: 61px;
  padding-top: 10px;
  padding-bottom: 10px;
  background: #f7f8f7;
}

.media-stage.audio-transcript-mode .audio-wrap {
  width: 100%;
}

.media-stage.audio-transcript-mode .audio-wrap > div { display: none; }

.media-unavailable {
  display: grid;
  place-items: center;
  min-height: 160px;
  padding: 24px;
  border: 1px dashed var(--line-strong);
  border-radius: 6px;
  color: var(--muted);
  text-align: center;
  font-size: 13px;
}

.audio-wrap { min-width: 0; }
.audio-wrap > div { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 11px; }
.audio-wrap strong { font-size: 13px; }
.audio-wrap span { overflow: hidden; color: var(--muted); font-size: 11px; text-overflow: ellipsis; white-space: nowrap; }
.audio-wrap audio { width: 100%; height: 40px; }

.detail-tabs {
  position: sticky;
  z-index: 2;
  top: 0;
  display: flex;
  gap: 22px;
  padding: 0 28px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.98);
}

.media-stage.audio-transcript-mode + .detail-tabs { top: 61px; }

.detail-tabs button {
  min-height: 48px;
  padding: 0 1px;
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 13px;
  font-weight: 680;
}

.detail-tabs button:hover { color: var(--ink); }
.detail-tabs button.active { border-color: var(--accent); color: var(--accent); }
.tab-panel { padding: 24px 28px 60px; }

.section-block + .section-block { margin-top: 28px; }
.section-block h3 { margin: 0 0 13px; font-size: 14px; }
.section-block-heading { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.section-block-heading span { color: var(--muted); font-size: 11px; }

.facts-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.fact {
  min-width: 0;
  padding: 13px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.fact span { display: block; color: var(--muted); font-size: 10px; }
.fact strong { display: block; margin-top: 5px; overflow-wrap: anywhere; font-size: 12px; font-weight: 650; }

.time-button {
  min-height: 27px;
  padding: 3px 6px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #fff;
  color: var(--accent);
  cursor: pointer;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}
.time-button:hover { background: var(--accent-soft); }
.material-body { min-width: 0; }
.material-author { display: block; margin-bottom: 4px; color: var(--muted); font-size: 11px; }
.material-text { margin: 0; overflow-wrap: anywhere; white-space: pre-wrap; font-size: 13px; line-height: 1.7; }
.event-kind { margin-bottom: 5px; }

.empty-material {
  padding: 42px 12px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  text-align: center;
  font-size: 13px;
}

.material-footer { padding-top: 15px; text-align: center; }

.section-status {
  margin-bottom: 14px;
  padding: 10px 12px;
  border-left: 3px solid var(--amber);
  background: var(--amber-soft);
  color: #6f4a06;
  font-size: 12px;
  line-height: 1.55;
}

.transcript-directory {
  margin-bottom: 18px;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.transcript-directory summary {
  min-height: 45px;
  padding: 12px 2px;
  color: var(--ink);
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
  list-style-position: inside;
}

.transcript-directory-list {
  max-height: 320px;
  overflow-y: auto;
  border-top: 1px solid var(--line);
}

.transcript-directory-button {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-height: 43px;
  padding: 8px 2px;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  cursor: pointer;
  text-align: left;
}

.transcript-directory-button:last-child { border-bottom: 0; }
.transcript-directory-button:hover { background: var(--surface-subtle); }
.transcript-directory-button:disabled { cursor: wait; opacity: 0.65; }
.transcript-directory-button strong {
  min-width: 0;
  overflow-wrap: anywhere;
  font-size: 12px;
  line-height: 1.45;
}
.transcript-directory-button small {
  color: var(--muted);
  font-size: 10px;
  white-space: nowrap;
}

.transcript-chapter {
  scroll-margin-top: 190px;
  border-bottom: 1px solid var(--line-strong);
}

.transcript-chapter-heading {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-height: 49px;
  padding: 9px 2px;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: #eef3f0;
  color: var(--ink);
  cursor: pointer;
  text-align: left;
}

.transcript-chapter-heading:hover { background: #e7eeea; }
.transcript-chapter-heading strong {
  min-width: 0;
  overflow-wrap: anywhere;
  font-size: 14px;
  line-height: 1.45;
}
.transcript-chapter-heading small {
  color: var(--muted);
  font-size: 10px;
  white-space: nowrap;
}
.chapter-time {
  color: var(--accent);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

.storage-flags { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 6px; }
.storage-flag { padding: 2px 6px; border-radius: 3px; background: var(--surface-subtle); color: var(--muted); font-size: 10px; }
.storage-flag.available { background: var(--accent-soft); color: var(--accent-hover); }

.document-preview {
  max-height: 300px;
  margin: 0;
  overflow: auto;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: #fff;
  color: #38433f;
  font: 11px/1.6 ui-monospace, SFMono-Regular, Menlo, monospace;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.tool-workspace, .drafts-workspace, .topics-workspace {
  height: calc(100vh - 68px);
  max-width: 1720px;
  margin: 0 auto;
  overflow: hidden;
  background: var(--surface);
}

.topics-layout {
  display: grid;
  grid-template-columns: minmax(250px, 310px) minmax(0, 1fr);
  height: calc(100% - 72px);
}

.topics-directory {
  overflow: auto;
  padding: 18px;
  border-right: 1px solid var(--line);
  background: #f7f8f7;
}

.topic-tree { display: grid; gap: 6px; margin-top: 16px; }
.topic-tree-branch, .topic-tree-children { display: grid; gap: 4px; }
.topic-tree-row { display: grid; grid-template-columns: 24px minmax(0, 1fr); align-items: center; }
.topic-tree-children {
  margin-left: 11px;
  padding-left: 12px;
  border-left: 1px solid #d7dfdb;
}
.topic-tree-toggle, .topic-tree-toggle-spacer {
  width: 24px;
  height: 30px;
}
.topic-tree-toggle {
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 22px;
  line-height: 1;
  transition: transform 140ms ease;
}
.topic-tree-toggle[aria-expanded="true"] { transform: rotate(90deg); }
.topic-tree-toggle:hover { color: var(--accent); }
.topic-tree-item {
  display: grid;
  gap: 3px;
  width: 100%;
  padding: 9px 10px;
  border: 1px solid transparent;
  border-radius: 5px;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  text-align: left;
}
.topic-tree-item:hover { background: var(--surface-hover); }
.topic-tree-item.active { border-color: #b9d8cd; background: var(--accent-soft); color: var(--accent-hover); }
.topic-tree-item span { font-size: 13px; font-weight: 680; }
.topic-tree-item[data-level="1"] span { font-size: 14px; }
.topic-tree-item small { color: var(--muted); font-size: 10px; }

.topic-detail { overflow: auto; padding: 28px clamp(18px, 4vw, 60px) 60px; }
.topic-detail > .answer-empty { min-height: 60vh; }
.topic-path { margin: 0 0 7px; color: var(--accent); font-size: 12px; }
.topic-detail h2 { margin: 0; font-size: 28px; }
.topic-description { max-width: 760px; color: var(--muted); line-height: 1.7; }
.topic-stats { display: flex; gap: 10px; margin: 20px 0; }
.topic-stat { min-width: 100px; padding: 13px 15px; border: 1px solid var(--line); border-radius: 6px; background: #fff; }
.topic-stat strong, .topic-stat span { display: block; }
.topic-stat strong { font-size: 21px; }
.topic-stat span { margin-top: 2px; color: var(--muted); font-size: 11px; }
.topic-filter-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.topic-detail section { margin-top: 30px; }
.topic-detail section h3 { margin: 0 0 12px; font-size: 16px; }
.topic-section-heading { margin-bottom: 12px; }
.topic-section-heading h3 { margin-bottom: 4px !important; }
.topic-section-heading p { margin: 0; color: var(--muted); font-size: 11px; }
.topic-content-list { display: grid; gap: 12px; }
.topic-content-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: #fff;
  box-shadow: 0 4px 16px rgba(29, 48, 41, 0.05);
}
.topic-content-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto 22px;
  align-items: center;
  gap: 18px;
  min-height: 72px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  background: #fff;
}
.topic-content-header::-webkit-details-marker { display: none; }
.topic-content-header:hover { background: var(--surface-hover); }
.topic-content-card[open] > .topic-content-header { border-bottom: 1px solid var(--line); background: linear-gradient(135deg, #f8faf9, #f1f6f4); }
.topic-content-heading { min-width: 0; }
.topic-content-kicker { color: var(--accent); font-size: 10px; font-weight: 760; letter-spacing: .08em; }
.topic-content-card h4 { margin: 4px 0 0; font-size: 15px; }
.topic-content-meta { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 6px; }
.topic-content-meta span {
  padding: 4px 7px;
  border: 1px solid #dfe6e2;
  border-radius: 999px;
  background: rgba(255,255,255,.8);
  color: var(--muted);
  font-size: 10px;
}
.topic-content-disclosure { color: var(--muted); font-size: 24px; line-height: 1; transform: rotate(0deg); transition: transform .15s ease; }
.topic-content-card[open] .topic-content-disclosure { transform: rotate(90deg); }
.topic-content-body { background: #fff; }
.topic-content-snippets { padding: 0 18px; }
.topic-snippet > small { color: var(--muted); font-size: 11px; }
.topic-snippet { display: grid; gap: 7px; padding: 13px 0; border-bottom: 1px solid var(--line); }
.topic-snippet:last-child { border-bottom: 0; }
.topic-snippet.compact {
  grid-template-columns: 30px minmax(0, 1fr) auto;
  align-items: start;
  gap: 11px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.topic-snippet-index {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent-hover);
  font-size: 10px;
  font-weight: 760;
}
.topic-snippet-body { display: grid; gap: 6px; min-width: 0; }
.topic-snippet-body small { color: var(--muted); font-size: 10px; }
.topic-snippet-preview { padding: 0; border: 0; background: none; color: var(--ink); cursor: pointer; line-height: 1.65; text-align: left; }
.topic-snippet-preview:hover { color: var(--accent); }
.topic-detail .button.secondary { margin-top: 12px; }
.topic-content-actions { padding: 0 18px 16px 59px; border-top: 1px solid var(--line); }
.topic-content-actions .button.secondary { margin-top: 12px; }
.transcript-paragraph.topic-evidence-range { background: #fff7d9; box-shadow: inset 3px 0 #c48a18; }

.workspace-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 14px 22px;
  border-bottom: 1px solid var(--line);
}

.workspace-header h2 { margin: 3px 0 0; font-size: 20px; }
.knowledge-status { color: var(--muted); font-size: 12px; }

.ai-layout {
  display: grid;
  grid-template-columns: minmax(280px, 340px) minmax(420px, 1fr) minmax(220px, 280px);
  height: calc(100% - 72px);
}

.query-panel, .answer-panel, .run-panel {
  min-width: 0;
  overflow: auto;
}

.query-panel {
  padding: 20px;
  border-right: 1px solid var(--line);
  background: #f7f8f7;
}

.query-panel > label { display: block; margin-top: 18px; }
.query-panel textarea { min-height: 190px; background: #fff; }

.segmented-control {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #e9edeb;
}

.segmented-control button {
  min-height: 34px;
  padding: 5px 10px;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 12px;
  font-weight: 680;
}

.segmented-control button.active {
  background: #fff;
  color: var(--ink);
  box-shadow: 0 1px 3px rgba(25, 35, 31, 0.12);
}

.filter-panel {
  margin-top: 18px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.filter-panel summary {
  padding: 12px 1px;
  color: #44504b;
  cursor: pointer;
  font-size: 12px;
  font-weight: 680;
}

.filter-grid { display: grid; gap: 12px; padding: 2px 0 15px; }
.filter-grid label > span { font-size: 11px; }
.filter-grid input, .filter-grid select { min-height: 38px; font-size: 12px; }
.query-panel .form-error { margin-top: 16px; }

.answer-panel {
  padding: 26px 30px 64px;
  background: #fff;
}

.answer-empty {
  display: grid;
  justify-items: center;
  align-content: center;
  min-height: 100%;
  color: var(--muted);
  text-align: center;
}

.answer-empty strong { color: var(--ink); font-size: 17px; }
.answer-empty span { margin-top: 8px; font-size: 12px; }

.answer-running {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 180px;
  padding: 24px;
  border-bottom: 1px solid var(--line);
}

.answer-running div { display: grid; gap: 5px; }
.answer-running strong { font-size: 15px; }
.answer-running span { color: var(--muted); font-size: 12px; }
.running-indicator {
  width: 20px;
  height: 20px;
  border: 2px solid #b9d2c8;
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 800ms linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.answer-heading, .source-heading, .run-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.answer-heading {
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.answer-heading h3 { margin: 3px 0 0; font-size: 20px; }
.answer-body { padding: 20px 0 8px; }
.answer-body h3 { margin: 24px 0 9px; font-size: 17px; }
.answer-body h4 { margin: 19px 0 7px; font-size: 14px; }
.answer-body p { margin: 0 0 10px; overflow-wrap: anywhere; font-size: 14px; line-height: 1.8; }
.answer-body .answer-list-line { padding-left: 15px; }
.answer-spacer { height: 7px; }

.limitations {
  margin: 14px 0 20px;
  padding: 12px 14px;
  border-left: 3px solid var(--amber);
  background: var(--amber-soft);
}

.limitations p { margin: 0; color: #6e4b0a; font-size: 12px; line-height: 1.6; }
.limitations p + p { margin-top: 5px; }

.claim-list { border-top: 1px solid var(--line); }
.claim-item { padding: 13px 1px; border-bottom: 1px solid var(--line); }
.claim-item p { margin: 0; font-size: 13px; line-height: 1.65; }
.claim-item > span { display: block; margin-top: 6px; color: var(--muted); font-size: 10px; }
.claim-citations { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }

.source-heading { margin-top: 30px; padding-bottom: 10px; border-bottom: 1px solid var(--line); }
.source-heading h3 { margin: 0; font-size: 14px; }
.source-heading span { color: var(--muted); font-size: 11px; }
.knowledge-source-list { display: grid; }
.knowledge-source { padding: 15px 1px; border-bottom: 1px solid var(--line); }
.knowledge-source-heading { display: flex; justify-content: space-between; gap: 12px; }
.knowledge-source-heading strong { font-size: 13px; }
.knowledge-source-heading span { color: var(--accent); font-size: 11px; font-variant-numeric: tabular-nums; }
.knowledge-source small { display: block; margin-top: 4px; color: var(--muted); font-size: 10px; }
.knowledge-source p { margin: 9px 0; overflow-wrap: anywhere; font-size: 12px; line-height: 1.7; white-space: pre-wrap; }
.source-link {
  min-height: 28px;
  padding: 3px 8px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background: #fff;
  color: var(--accent);
  cursor: pointer;
  font-size: 11px;
}

.ai-answer-body .source-link {
  display: inline;
  margin: 0 2px;
  padding: 0;
  vertical-align: baseline;
}
.source-link:hover { background: var(--accent-soft); }

.run-panel {
  border-left: 1px solid var(--line);
  background: #f7f8f7;
}

.run-heading {
  position: sticky;
  z-index: 1;
  top: 0;
  min-height: 58px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  background: #f7f8f7;
}
.run-heading h3 { margin: 0; font-size: 13px; }
.ai-run-list { display: grid; }
.ai-run-item, .draft-list-item {
  display: grid;
  gap: 5px;
  width: 100%;
  padding: 12px 13px;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  text-align: left;
}
.ai-run-item:hover, .draft-list-item:hover { background: var(--surface-hover); }
.ai-run-item.active, .draft-list-item.active { background: var(--accent-soft); }
.ai-run-item strong, .draft-list-item strong {
  overflow: hidden;
  font-size: 12px;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.ai-run-item span, .draft-list-item span { color: #4d5954; font-size: 10px; }
.ai-run-item small, .draft-list-item small { color: var(--muted); font-size: 9px; }

.drafts-workspace {
  display: grid;
  grid-template-columns: minmax(240px, 330px) minmax(0, 1fr);
}
.draft-list-panel, .draft-editor-panel { min-width: 0; overflow: auto; }
.draft-list-panel { border-right: 1px solid var(--line); background: #f7f8f7; }
.draft-list { display: grid; }
.draft-list-item span {
  overflow: hidden;
  line-height: 1.5;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.draft-editor-panel { background: #fff; }
.draft-form {
  display: grid;
  grid-template-rows: auto auto minmax(300px, 1fr) auto auto;
  gap: 18px;
  width: min(100%, 940px);
  min-height: 100%;
  margin: 0 auto;
  padding: 28px 34px 46px;
}
.draft-form header { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; }
.draft-form header h2 { margin: 4px 0 0; font-size: 21px; }
.draft-form header span { color: var(--muted); font-size: 10px; }
.draft-body-field { display: grid; grid-template-rows: auto minmax(0, 1fr); }
.draft-body-field textarea { min-height: 380px; resize: none; }

.upload-dialog, .source-dialog {
  width: min(680px, calc(100% - 28px));
  max-height: calc(100vh - 40px);
  overflow: auto;
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.upload-dialog::backdrop, .source-dialog::backdrop {
  background: rgba(20, 27, 24, 0.48);
}
.dialog-heading {
  position: sticky;
  z-index: 2;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  border-bottom: 1px solid var(--line);
  background: #fff;
}
.dialog-heading h2 { margin: 3px 0 0; font-size: 19px; }
.upload-dialog form { padding: 22px; }

.source-dialog-body { padding: 22px; }
.source-dialog-meta {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}
.source-dialog-text {
  padding: 4px 0 4px 16px;
  border-left: 3px solid var(--accent);
  overflow-wrap: anywhere;
  font-size: 15px;
  line-height: 1.85;
}
.source-dialog-text p { margin: 0; }
.source-dialog-text p + p { margin-top: 14px; }
.source-dialog-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 22px;
}

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

.file-drop {
  display: grid;
  justify-items: center;
  margin-top: 20px;
  padding: 28px 18px;
  border: 1px dashed #aeb8b3;
  border-radius: 6px;
  background: #f8faf9;
  cursor: pointer;
  text-align: center;
}
.file-drop:hover, .file-drop.dragging { border-color: var(--accent); background: #f1f8f5; }
.file-drop input { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.file-drop strong { margin-top: 9px; font-size: 14px; overflow-wrap: anywhere; }
.file-drop span:last-child { margin-top: 5px; color: var(--muted); font-size: 11px; }
.file-glyph { color: var(--accent); font-size: 27px; line-height: 1; }

.progress-area { margin-top: 20px; }
.progress-meta { display: flex; justify-content: space-between; gap: 12px; font-size: 12px; }
.progress-track { height: 7px; margin-top: 9px; overflow: hidden; border-radius: 4px; background: #e7eae9; }
.progress-track span { display: block; width: 0; height: 100%; background: var(--accent); transition: width 180ms ease; }
.progress-area p { margin: 7px 0 0; color: var(--muted); font-size: 11px; }
.form-actions { display: flex; gap: 9px; margin-top: 20px; }

@media (max-width: 1050px) {
  body { overflow: auto; }
  .topbar { grid-template-columns: auto 1fr auto; min-height: 64px; padding: 0 16px; }
  .library-summary { display: none; }
  .account-row { justify-self: end; }
  .library-workspace {
    grid-template-columns: minmax(180px, 220px) minmax(270px, 330px) minmax(420px, 1fr);
    height: calc(100vh - 64px);
  }
  .detail-header, .media-stage, .tab-panel { padding-right: 20px; padding-left: 20px; }
  .detail-tabs { padding: 0 20px; }
  .media-stage { grid-template-columns: 1fr; }
  .tool-workspace, .drafts-workspace, .topics-workspace { height: calc(100vh - 64px); }
  .ai-layout { grid-template-columns: minmax(270px, 320px) minmax(400px, 1fr); }
  .run-panel { display: none; }
}

@media (max-width: 760px) {
  .topbar {
    position: sticky;
    top: 0;
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-rows: 62px 44px;
    gap: 0;
    min-height: 106px;
  }
  .brand-row { grid-column: 1; grid-row: 1; }
  .account-row { grid-column: 2; grid-row: 1; }
  .primary-nav {
    grid-column: 1 / -1;
    grid-row: 2;
    overflow-x: auto;
    border-top: 1px solid var(--line);
  }
  .primary-nav button { flex: 1 0 auto; min-width: 82px; }
  .brand-mark.small, .eyebrow, .account-name { display: none; }
  .brand-row h1 { font-size: 16px; }
  .account-row { gap: 2px; }
  .account-row .button { min-height: 36px; padding: 7px 10px; }
  .library-workspace {
    display: block;
    height: auto;
    min-height: calc(100vh - 106px);
  }
  .anchor-panel, .session-panel, .detail-panel { overflow: visible; border: 0; }
  .anchor-panel { border-bottom: 1px solid var(--line); }
  .anchor-panel .panel-heading { position: static; min-height: 56px; padding: 10px 14px 4px; border: 0; }
  .anchor-panel .panel-heading h2 { display: none; }
  .anchor-list { display: flex; gap: 7px; overflow-x: auto; padding: 7px 14px 13px; scrollbar-width: none; }
  .anchor-list::-webkit-scrollbar { display: none; }
  .anchor-item { display: flex; flex: 0 0 auto; align-items: center; gap: 7px; width: auto; padding: 8px 10px; border-color: var(--line); background: #fff; white-space: nowrap; }
  .anchor-item small { display: none; }
  .session-panel { border-bottom: 8px solid var(--bg); }
  .session-heading { position: static; min-height: 62px; padding: 11px 14px; }
  .session-item { min-height: 92px; padding: 13px 14px; }
  .detail-panel { min-height: 450px; }
  .detail-empty { min-height: 380px; }
  .detail-header { padding: 19px 14px 16px; }
  .detail-header { display: grid; }
  .detail-header h2 { font-size: 19px; }
  .detail-header .button { justify-self: start; }
  .media-stage { padding: 14px; }
  .media-stage video { max-height: 72vh; }
  .media-stage.audio-transcript-mode { top: 106px; padding: 10px 14px; }
  .detail-tabs { top: 106px; gap: 0; justify-content: space-between; padding: 0 14px; overflow-x: auto; }
  .media-stage.audio-transcript-mode + .detail-tabs { top: 167px; }
  .detail-tabs button { flex: 0 0 auto; min-height: 46px; padding: 0 8px; }
  .tab-panel { padding: 18px 14px 50px; }
  .facts-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .transcript-chapter-heading {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 9px;
  }
  .transcript-chapter-heading small {
    grid-column: 2;
    margin-top: -5px;
  }
  .transcript-directory-list { max-height: 45vh; }
  .transcript-directory-button {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 9px;
  }
  .transcript-directory-button small {
    grid-column: 2;
    margin-top: -5px;
  }
  .upload-dialog, .source-dialog { max-height: calc(100vh - 18px); }
  .dialog-heading, .upload-dialog form, .source-dialog-body { padding: 17px 15px; }
  .field-grid { grid-template-columns: 1fr; gap: 14px; }
  .field-grid .wide { grid-column: auto; }
  .login-panel { padding: 32px 24px; }
  .tool-workspace, .drafts-workspace, .topics-workspace {
    display: block;
    height: auto;
    min-height: calc(100vh - 106px);
    overflow: visible;
  }
  .topics-layout { display: block; height: auto; }
  .topics-directory { overflow: visible; padding: 14px; border: 0; border-bottom: 8px solid var(--bg); }
  .topic-tree { max-height: 56dvh; overflow: auto; padding-bottom: 3px; }
  .topic-detail { overflow: visible; padding: 22px 14px 50px; }
  .topic-detail h2 { font-size: 23px; }
  .topic-stats { overflow-x: auto; }
  .topic-stat { flex: 0 0 92px; }
  .topic-filter-grid { grid-template-columns: 1fr; }
  .topic-content-header { grid-template-columns: minmax(0, 1fr) 20px; align-items: start; gap: 10px; }
  .topic-content-meta { grid-column: 1; justify-content: flex-start; }
  .topic-content-disclosure { grid-column: 2; grid-row: 1 / span 2; align-self: center; }
  .topic-content-snippets { padding: 0 14px; }
  .topic-snippet.compact { grid-template-columns: 28px minmax(0, 1fr); }
  .topic-snippet.compact > .source-link { grid-column: 2; }
  .topic-content-actions { padding: 0 14px 14px 53px; }
  .workspace-header { min-height: 62px; padding: 12px 14px; }
  .workspace-header h2 { font-size: 18px; }
  .ai-layout { display: block; height: auto; }
  .query-panel, .answer-panel, .run-panel { overflow: visible; }
  .query-panel { padding: 17px 14px 20px; border: 0; border-bottom: 8px solid var(--bg); }
  .query-panel textarea { min-height: 150px; }
  .answer-panel { min-height: 420px; padding: 22px 14px 48px; border-bottom: 8px solid var(--bg); }
  .answer-empty { min-height: 360px; }
  .run-panel { display: block; border: 0; }
  .run-heading { position: static; padding: 10px 14px; }
  .draft-list-panel, .draft-editor-panel { overflow: visible; }
  .draft-list-panel { border: 0; border-bottom: 8px solid var(--bg); }
  .draft-list { max-height: 280px; overflow: auto; }
  .draft-form { min-height: 620px; padding: 22px 14px 46px; }
  .draft-body-field textarea { min-height: 360px; }
}

/* 2026 library interaction refresh */
.topbar {
  box-shadow: 0 1px 10px rgba(24, 45, 37, 0.04);
}

.library-workspace {
  transition: grid-template-columns 180ms ease;
}

.library-workspace.anchor-collapsed {
  grid-template-columns: 48px minmax(300px, 360px) minmax(520px, 1fr);
}

.library-workspace.session-collapsed {
  grid-template-columns: minmax(190px, 220px) 48px minmax(520px, 1fr);
}

.library-workspace.anchor-collapsed.session-collapsed {
  grid-template-columns: 48px 48px minmax(520px, 1fr);
}

.panel-heading-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.panel-toggle {
  border-color: var(--line);
  background: #fff;
}

.collapsed-panel-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  height: 100%;
  padding: 16px 10px;
  border: 0;
  background: transparent;
  color: var(--accent);
  cursor: pointer;
}

.collapsed-panel-button span {
  writing-mode: vertical-rl;
  letter-spacing: 0.16em;
  font-size: 12px;
  font-weight: 750;
}

.library-workspace.anchor-collapsed .anchor-panel > :not(.collapsed-panel-button),
.library-workspace.session-collapsed .session-panel > :not(.collapsed-panel-button) {
  display: none !important;
}

.library-search {
  padding: 12px 14px 13px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, #fbfdfc, #f5f9f7);
}

.library-search > label {
  display: block;
  margin-bottom: 7px;
  color: var(--accent-hover);
  font-size: 11px;
  font-weight: 750;
}

.library-search-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 6px;
}

.library-search-row input {
  min-height: 38px;
  padding: 8px 10px;
  font-size: 12px;
}

.library-search-row .button { min-height: 38px; padding-inline: 11px; }
.library-search-row .button.quiet { grid-column: 1 / -1; justify-self: start; min-height: 28px; }
.library-search-status { margin: 7px 0 0; color: var(--muted); font-size: 10px; line-height: 1.45; }

.semantic-match-preview {
  margin-top: 10px;
  padding: 9px 10px;
  border: 1px solid #cce4da;
  border-radius: 7px;
  background: #f0f8f5;
}

.semantic-match-preview span { color: var(--accent); font-size: 10px; font-weight: 750; }
.semantic-match-preview p {
  display: -webkit-box;
  margin: 4px 0 0;
  overflow: hidden;
  color: #34453e;
  font-size: 11px;
  line-height: 1.55;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.session-item:has(.semantic-match-preview) { min-height: 150px; }

.detail-reading-toolbar {
  position: sticky;
  z-index: 8;
  top: 0;
  margin: 0;
  padding: 0 20px 8px;
  background: rgba(255, 255, 255, 0.97);
  box-shadow: 0 8px 18px rgba(24, 54, 43, 0.08);
  backdrop-filter: blur(12px);
}

.media-dock {
  position: static;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  margin: 0;
  padding: 10px 14px;
  border: 1px solid rgba(23, 107, 85, 0.2);
  border-radius: 0 0 12px 12px;
  background: rgba(250, 253, 252, 0.97);
  box-shadow: 0 4px 14px rgba(24, 54, 43, 0.08);
}

.media-dock-toggle {
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  font-size: 14px;
}

.media-dock-body { min-width: 0; }
.media-dock-meta { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 5px; }
.media-dock-meta strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 11px; }
.media-dock-meta span { flex: 0 0 auto; color: var(--muted); font-size: 10px; font-variant-numeric: tabular-nums; }
.media-dock-progress { min-height: 18px; height: 18px; padding: 0; border: 0; box-shadow: none; accent-color: var(--accent); }
.media-dock-top { border: 0; background: transparent; color: var(--accent); cursor: pointer; font-size: 11px; font-weight: 700; }

.transcript-reading-layout {
  display: block;
}

.transcript-directory {
  position: static;
  max-height: none;
  margin: 0 0 32px;
  overflow: visible;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0;
  background: #fafcfb;
}

.transcript-directory-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 12px 14px;
  cursor: pointer;
  list-style: none;
}

.transcript-directory-summary::-webkit-details-marker { display: none; }
.transcript-directory-summary strong { font-size: 13px; }
.transcript-directory-summary span { color: var(--muted); font-size: 11px; }
.transcript-directory[open] .transcript-directory-summary { border-bottom: 1px solid var(--line); }
.transcript-directory-list {
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 10px;
}
.transcript-directory-button { min-height: 64px; border: 1px solid transparent; }
.transcript-directory-button:hover { border-color: var(--line); }

.semantic-transcript-hit {
  border-left-color: #c48220;
  background: #fff4dc;
  box-shadow: inset 0 0 0 1px rgba(196, 130, 32, 0.14);
}
.semantic-transcript-hit.current-transcript { background: linear-gradient(90deg, #e4f2ed, #fff4dc); }
.semantic-transcript-hit.active-semantic-hit {
  border-left-color: #9a5a00;
  box-shadow: inset 0 0 0 2px rgba(196, 130, 32, 0.38);
}
.semantic-match-navigator {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 20px;
  padding: 9px 10px;
  border: 1px solid rgba(196, 130, 32, 0.24);
  border-radius: 8px;
  background: #fffaf0;
}
.semantic-match-label { flex: 1 1 auto; color: #764a0c; font-size: 12px; font-weight: 700; }
.semantic-match-step { min-height: 30px; padding: 4px 8px; font-size: 11px; }

.detail-header { border-bottom: 0; }
.detail-title-row, .detail-context { min-width: 0; }
.media-stage { margin: 0 20px; border-radius: 12px; overflow: hidden; }
.detail-reading-toolbar .detail-tabs { margin-top: 8px; }
.transcript-chapter-heading h4 { max-width: 720px; }

@media (max-width: 1050px) {
  .library-workspace.anchor-collapsed { grid-template-columns: 48px minmax(280px, 330px) minmax(460px, 1fr); }
  .library-workspace.session-collapsed { grid-template-columns: minmax(180px, 210px) 48px minmax(460px, 1fr); }
  .library-workspace.anchor-collapsed.session-collapsed { grid-template-columns: 48px 48px minmax(460px, 1fr); }
  .transcript-reading-layout {
    grid-template-columns: minmax(180px, 200px) minmax(0, 1fr);
    gap: 24px;
  }
}

@media (max-width: 760px) {
  .library-workspace.anchor-collapsed,
  .library-workspace.session-collapsed,
  .library-workspace.anchor-collapsed.session-collapsed { display: block; }
  .library-workspace.anchor-collapsed .anchor-panel,
  .library-workspace.session-collapsed .session-panel { min-height: 48px; max-height: 48px; }
  .collapsed-panel-button { height: 48px; padding: 8px 14px; }
  .collapsed-panel-button span { writing-mode: horizontal-tb; letter-spacing: 0; }
  .media-stage { margin: 0; border-radius: 0; }
  .detail-reading-toolbar { padding: 0 0 8px; }
  .media-dock { margin: 0; border-right: 0; border-left: 0; border-radius: 0; }
  .media-dock-top { display: none; }
  .transcript-directory { position: static; margin: 0 0 24px; padding: 0; }
  .transcript-directory-list { display: grid; grid-template-columns: 1fr; overflow: visible; }
  .transcript-directory-button { width: 100%; flex: none; }
}

/* Library reading workspace */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.topbar {
  grid-template-columns: auto minmax(360px, 1fr) auto;
}

.primary-nav { justify-self: center; }
.account-row { justify-self: end; }

.library-workspace {
  grid-template-columns: minmax(190px, 220px) minmax(300px, 360px) minmax(520px, 1fr);
  max-width: none;
}

.period-filter { display: block; }
.period-filter select {
  width: 156px;
  min-height: 36px;
  padding: 7px 30px 7px 10px;
  border-color: var(--line);
  background: #fff;
  font-size: 12px;
}

.session-list { padding-bottom: 58px; }
.session-date-heading {
  position: sticky;
  z-index: 1;
  top: 73px;
  padding: 8px 16px;
  border-bottom: 1px solid var(--line);
  background: #f5f7f6;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
}

.session-pagination {
  position: sticky;
  z-index: 3;
  bottom: 0;
  display: grid;
  grid-template-columns: 36px 1fr 36px;
  align-items: center;
  gap: 8px;
  min-height: 52px;
  padding: 7px 14px;
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.97);
}

.session-pagination span {
  color: var(--muted);
  font-size: 12px;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.session-pagination .icon-button {
  border-color: var(--line);
  background: #fff;
  font-size: 24px;
}

.session-pagination .icon-button:disabled { opacity: 0.35; }
.detail-panel {
  background: #fff;
  overscroll-behavior: contain;
}

.detail-header {
  align-items: center;
  padding-top: 20px;
  padding-bottom: 18px;
}

.detail-actions {
  display: flex;
  flex: 0 0 auto;
  gap: 8px;
}

.detail-diagnostics {
  margin: 14px 28px 0;
  border: 1px solid #e9c7c7;
  border-radius: 6px;
  background: #fff8f8;
}

.detail-diagnostics summary {
  padding: 11px 13px;
  color: var(--danger);
  cursor: pointer;
  font-size: 12px;
  font-weight: 700;
}

.detail-diagnostics > div { padding: 0 13px 12px; }
.diagnostic-error { margin: 0; color: #722d2d; font-size: 12px; line-height: 1.6; }
.diagnostic-task {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 10px;
  padding-top: 8px;
  color: var(--muted);
  font-size: 11px;
}
.diagnostic-task strong { color: var(--ink); }

.media-stage {
  grid-template-columns: minmax(260px, 440px) minmax(280px, 1fr);
  background: #f3f5f4;
}

.detail-tabs {
  gap: 30px;
  min-height: 52px;
}

.detail-tabs button {
  min-height: 52px;
  font-size: 14px;
}

.tab-panel {
  width: 100%;
  margin: 0;
  padding: 26px 32px 80px;
}

.reading-section { min-width: 0; }
.reading-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}
.reading-heading h3 { margin: 0; font-size: 18px; line-height: 1.35; }
.reading-heading span { color: var(--muted); font-size: 11px; }

.timeline-list {
  position: relative;
  display: grid;
  gap: 0;
}

.timeline-list::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 74px;
  width: 1px;
  background: var(--line);
}

.timeline-row {
  position: relative;
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 26px;
  padding: 11px 0;
}

.timeline-row::before {
  content: "";
  position: absolute;
  top: 21px;
  left: 70px;
  width: 9px;
  height: 9px;
  border: 2px solid #fff;
  border-radius: 50%;
  background: #7b8a84;
  box-shadow: 0 0 0 1px var(--line-strong);
}

.timeline-row.comment::before { background: #b4762e; }
.timeline-row.current-timeline {
  margin: 0 -12px;
  padding-right: 12px;
  padding-left: 12px;
  background: #eef5f2;
}
.timeline-row.current-timeline::before { left: 82px; background: var(--accent); }
.timeline-body { min-width: 0; }
.timeline-author {
  display: block;
  margin-bottom: 3px;
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
}
.timeline-row.comment .timeline-author { color: #8a5a20; }
.timeline-text {
  margin: 0;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
  font-size: 14px;
  line-height: 1.75;
}

.transcript-reading-layout {
  display: grid;
  grid-template-columns: 270px minmax(0, 1fr);
  align-items: start;
  gap: 28px;
}

.transcript-directory {
  position: sticky;
  top: 80px;
  display: flex;
  height: calc(100dvh - 172px);
  overflow: hidden;
  overscroll-behavior: contain;
  flex-direction: column;
  align-self: start;
  margin: 0;
  border: 0;
  border-right: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  padding-right: 14px;
}

.detail-panel:has(.media-dock:not([hidden])) .transcript-directory {
  top: 180px;
  height: calc(100dvh - 272px);
}

.detail-panel:has(.media-dock:not([hidden])) .transcript-chapter {
  scroll-margin-top: 180px;
}
.transcript-directory-summary {
  display: flex;
  align-items: center;
  min-height: 36px;
  padding: 0 0 10px;
}
.transcript-directory-summary strong { font-size: 13px; }
.transcript-directory-summary span { margin-left: auto; color: var(--muted); font-size: 12px; }

.transcript-directory-list {
  display: grid;
  grid-template-columns: 1fr;
  flex: 1 1 auto;
  min-height: 0;
  max-height: none;
  overflow-y: auto;
  overscroll-behavior: contain;
  border-top: 0;
  background: transparent;
}

.transcript-directory-button {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  grid-template-areas:
    "time title"
    "time category";
  column-gap: 8px;
  row-gap: 5px;
  min-height: 78px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
}
.transcript-directory-button:hover { background: transparent; color: var(--accent-hover); }
.transcript-directory-button.active { background: var(--accent-soft); color: var(--accent-hover); }
.transcript-directory-button .chapter-time {
  grid-area: time;
  align-self: center;
}
.transcript-directory-button strong { grid-area: title; }
.chapter-category {
  grid-area: category;
  justify-self: start;
  margin: 0;
  padding: 2px 6px;
  border-radius: 3px;
  background: var(--surface-subtle);
  color: var(--muted);
  font-size: 10px;
  line-height: 1.3;
  white-space: nowrap;
}

.transcript-chapter {
  scroll-margin-top: 80px;
  padding: 0 0 36px;
  border: 0;
}
.transcript-chapter + .transcript-chapter {
  padding-top: 32px;
  border-top: 1px solid var(--line);
}

.transcript-chapter-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  min-height: 0;
  margin-bottom: 18px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: default;
}
.transcript-chapter-heading:hover { background: transparent; }
.transcript-chapter-heading small {
  display: block;
  margin-bottom: 5px;
  color: var(--accent);
  font-size: 10px;
  font-weight: 700;
}
.transcript-chapter-heading h4 {
  margin: 0;
  font-size: 21px;
  line-height: 1.4;
}
.chapter-play {
  flex: 0 0 auto;
  min-height: 32px;
  padding: 5px 9px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: #fff;
  color: var(--accent);
  cursor: pointer;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}
.chapter-play:hover { background: var(--accent-soft); }

.transcript-prose { min-width: 0; }
.transcript-paragraph {
  margin: 0 0 15px;
  padding: 4px 8px;
  border-left: 2px solid transparent;
  border-radius: 0 4px 4px 0;
  overflow-wrap: anywhere;
  cursor: text;
  font-size: 16px;
  line-height: 1.95;
}
.transcript-paragraph.current-transcript {
  border-left-color: var(--accent);
  background: var(--accent-soft);
}

@media (max-width: 1050px) {
  .topbar { grid-template-columns: auto 1fr auto; }
  .library-workspace {
    grid-template-columns: minmax(180px, 210px) minmax(280px, 330px) minmax(460px, 1fr);
  }
  .tab-panel { padding-right: 24px; padding-left: 24px; }
  .transcript-reading-layout { grid-template-columns: 230px minmax(0, 1fr); gap: 24px; }
}

@media (max-width: 760px) {
  .topbar {
    grid-template-columns: minmax(0, 1fr) auto;
  }
  .session-heading {
    position: sticky;
    top: 106px;
    z-index: 4;
  }
  .period-filter select { width: 148px; }
  .session-date-heading { top: 168px; }
  .session-list { padding-bottom: 0; }
  .session-pagination { position: static; }
  .detail-header { align-items: start; }
  .detail-actions { flex-wrap: wrap; }
  .detail-diagnostics { margin: 12px 14px 0; }
  .media-stage { grid-template-columns: 1fr; }
  .detail-tabs { justify-content: flex-start; gap: 28px; }
  .tab-panel {
    width: 100%;
    padding: 20px 14px 64px;
  }
  .timeline-list::before { left: 59px; }
  .timeline-row { grid-template-columns: 52px minmax(0, 1fr); gap: 20px; }
  .timeline-row::before { left: 55px; }
  .timeline-row.current-timeline::before { left: 67px; }
  .timeline-text { font-size: 14px; }
  .transcript-reading-layout { display: block; }
  .transcript-directory {
    float: none;
    position: static;
    display: block;
    width: auto;
    height: auto;
    min-height: 0;
    max-height: none;
    margin: 0 0 24px;
    overflow: visible;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 0;
    padding: 0;
    background: var(--surface-subtle);
  }
  .transcript-directory-list {
    display: grid;
    grid-template-columns: 1fr;
    max-height: 300px;
    overflow: auto;
  }
  .transcript-directory-button {
    display: grid;
    grid-template-columns: 42px minmax(0, 1fr);
    min-height: 48px;
    padding: 8px 12px;
    border: 0;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
    background: transparent;
  }
  .transcript-chapter { scroll-margin-top: 230px; }
  .transcript-chapter-heading { align-items: flex-start; }
  .transcript-chapter-heading h4 { font-size: 19px; }
  .transcript-paragraph { padding-right: 5px; padding-left: 7px; font-size: 16px; line-height: 1.9; }
}