:root {
  --bg-light: #f8fafc;
  --bg-dark: #0b1120;
  --surface-light: #ffffff;
  --surface-dark: #151f32;
  --surface-alt-light: #f1f5f9;
  --surface-alt-dark: #1e293b;
  --text-light: #0f172a;
  --text-dark: #f1f5f9;
  --muted-light: #475569;
  --muted-dark: #94a3b8;
  --border-light: #cbd5e1;
  --border-dark: #334155;
  --accent-light: #2563eb;
  --accent-dark: #60a5fa;
  --accent-soft-light: #dbeafe;
  --accent-soft-dark: #1e3a8a;
  --accent-contrast-light: #ffffff;
  --accent-contrast-dark: #0b1120;
  --danger-light: #dc2626;
  --danger-dark: #f87171;
  --success-light: #059669;
  --success-dark: #34d399;
  --success-bg-light: #ecfdf5;
  --success-bg-dark: #064e3b;
  --success-text-light: #065f46;
  --success-text-dark: #a7f3d0;
  --error-bg-light: #fef2f2;
  --error-bg-dark: #450a0a;
  --error-text-light: #991b1b;
  --error-text-dark: #fecaca;
  --warn-bg-light: #fffbeb;
  --warn-bg-dark: #451a03;
  --warn-text-light: #92400e;
  --warn-text-dark: #fde68a;

  --bg: var(--bg-light);
  --surface: var(--surface-light);
  --surface-alt: var(--surface-alt-light);
  --text: var(--text-light);
  --muted: var(--muted-light);
  --border: var(--border-light);
  --accent: var(--accent-light);
  --accent-soft: var(--accent-soft-light);
  --accent-contrast: var(--accent-contrast-light);
  --danger: var(--danger-light);
  --success: var(--success-light);
  --success-bg: var(--success-bg-light);
  --success-text: var(--success-text-light);
  --error-bg: var(--error-bg-light);
  --error-text: var(--error-text-light);
  --warn-bg: var(--warn-bg-light);
  --warn-text: var(--warn-text-light);

  color-scheme: light dark;
  accent-color: var(--accent);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: var(--bg-dark);
    --surface: var(--surface-dark);
    --surface-alt: var(--surface-alt-dark);
    --text: var(--text-dark);
    --muted: var(--muted-dark);
    --border: var(--border-dark);
    --accent: var(--accent-dark);
    --accent-soft: var(--accent-soft-dark);
    --accent-contrast: var(--accent-contrast-dark);
    --danger: var(--danger-dark);
    --success: var(--success-dark);
    --success-bg: var(--success-bg-dark);
    --success-text: var(--success-text-dark);
    --error-bg: var(--error-bg-dark);
    --error-text: var(--error-text-dark);
    --warn-bg: var(--warn-bg-dark);
    --warn-text: var(--warn-text-dark);
  }
}

@supports (color: light-dark(white, black)) {
  :root {
    --bg: light-dark(var(--bg-light), var(--bg-dark));
    --surface: light-dark(var(--surface-light), var(--surface-dark));
    --surface-alt: light-dark(var(--surface-alt-light), var(--surface-alt-dark));
    --text: light-dark(var(--text-light), var(--text-dark));
    --muted: light-dark(var(--muted-light), var(--muted-dark));
    --border: light-dark(var(--border-light), var(--border-dark));
    --accent: light-dark(var(--accent-light), var(--accent-dark));
    --accent-soft: light-dark(var(--accent-soft-light), var(--accent-soft-dark));
    --accent-contrast: light-dark(var(--accent-contrast-light), var(--accent-contrast-dark));
    --danger: light-dark(var(--danger-light), var(--danger-dark));
    --success: light-dark(var(--success-light), var(--success-dark));
    --success-bg: light-dark(var(--success-bg-light), var(--success-bg-dark));
    --success-text: light-dark(var(--success-text-light), var(--success-text-dark));
    --error-bg: light-dark(var(--error-bg-light), var(--error-bg-dark));
    --error-text: light-dark(var(--error-text-light), var(--error-text-dark));
    --warn-bg: light-dark(var(--warn-bg-light), var(--warn-bg-dark));
    --warn-text: light-dark(var(--warn-text-light), var(--warn-text-dark));
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.55;
  background-color: var(--bg);
  color: var(--text);
}

.visually-hidden {
  position: absolute;
  clip-path: inset(50%);
  overflow: hidden;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  white-space: nowrap;
}

/* 顶部导航栏 */
.topbar {
  position: sticky;
  inset-block-start: 0;
  z-index: 20;
  background-color: var(--surface);
  border-block-end: 1px solid var(--border);
}

.topbar-inner {
  max-width: 78rem;
  margin-inline: auto;
  padding: 0.75rem 1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.brand h1 {
  margin: 0;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.brand-sub {
  margin: 0;
  font-size: 0.8rem;
  color: var(--muted);
}

.main-nav {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.nav-tab {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font: inherit;
  font-size: 0.925rem;
  font-weight: 600;
  min-height: 42px;
  padding: 0.45rem 0.85rem;
  border-radius: 0.65rem;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.nav-tab.is-active {
  background-color: var(--surface-alt);
  border-color: var(--border);
  color: var(--text);
}

.pill-count {
  display: inline-grid;
  place-items: center;
  min-width: 1.35rem;
  height: 1.35rem;
  padding-inline: 0.35rem;
  border-radius: 999px;
  font-size: 0.75rem;
  background-color: var(--accent);
  color: var(--accent-contrast);
}

.container {
  max-width: 78rem;
  margin-inline: auto;
  padding: 1.25rem 1rem 6rem;
}

.subtitle {
  margin: 0.25rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.25rem;
}

/* 可折叠上传抽屉 */
.upload-drawer {
  padding: 0;
  margin-block-end: 1.5rem;
  overflow: hidden;
}

.upload-summary {
  padding: 1rem 1.25rem;
  font-weight: 700;
  font-size: 1.02rem;
  cursor: pointer;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.upload-summary-hint {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--muted);
}

.upload-body {
  padding: 0 1.25rem 1.25rem;
  border-block-start: 1px solid var(--border);
  padding-block-start: 1.15rem;
}

.dropzone {
  border: 2px dashed var(--border);
  border-radius: 0.875rem;
  padding: 1.35rem 1rem;
  text-align: center;
  background-color: var(--surface-alt);
  margin-block-end: 1.15rem;
}

.dropzone.is-dragover {
  border-color: var(--accent);
}

.dropzone-hint {
  margin: 0 0 0.85rem;
  color: var(--muted);
  font-size: 0.925rem;
}

.picker-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}

/* 通用按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  min-height: 46px;
  padding: 0.55rem 1rem;
  border-radius: 0.65rem;
  border: 1px solid var(--border);
  background-color: var(--surface);
  color: var(--text);
  cursor: pointer;
  text-decoration: none;
}

.btn-sm {
  min-height: 38px;
  padding: 0.35rem 0.75rem;
  font-size: 0.85rem;
}

.btn-block {
  width: 100%;
}

@media (pointer: coarse) {
  .btn:not(.btn-sm),
  .field input,
  .field textarea {
    min-height: 50px;
  }
}

.btn-primary {
  background-color: var(--accent);
  border-color: var(--accent);
  color: var(--accent-contrast);
}

.btn-danger {
  color: var(--danger);
  border-color: var(--border);
  background-color: transparent;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn:focus-visible,
.btn-audio-chip:focus-visible,
.nav-tab:focus-visible,
.pane-tab:focus-visible,
.chip:focus-visible,
.word-token:focus-visible,
.dropzone:has(#gallery-input:focus-visible) #gallery-label,
.field input:focus-visible,
.field textarea:focus-visible,
.thumb-btn:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

/* 待上传预览与表单 */
.staged-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(9rem, 1fr));
  gap: 0.75rem;
  margin-block-end: 1.15rem;
  padding: 0;
  list-style: none;
}

.staged-list[hidden] {
  display: none;
}

.staged-item {
  position: relative;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  overflow: hidden;
  background-color: var(--surface-alt);
}

.staged-item img {
  display: block;
  width: 100%;
  height: 8rem;
  object-fit: cover;
}

.staged-meta {
  padding: 0.4rem 0.55rem;
  font-size: 0.78rem;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
}

.remove-staged-btn {
  position: absolute;
  inset-block-start: 0.35rem;
  inset-inline-end: 0.35rem;
  width: 1.9rem;
  height: 1.9rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background-color: var(--surface);
  color: var(--text);
  font-size: 1.05rem;
  cursor: pointer;
  display: grid;
  place-items: center;
}

.field {
  margin-block-end: 1.1rem;
}

.field label {
  display: block;
  font-weight: 600;
  margin-block-end: 0.35rem;
  font-size: 0.925rem;
}

.field input[type="text"],
.field textarea {
  width: 100%;
  font: inherit;
  font-size: 1rem;
  padding: 0.65rem 0.85rem;
  border-radius: 0.65rem;
  border: 1px solid var(--border);
  background-color: var(--surface);
  color: var(--text);
}

.field textarea {
  field-sizing: content;
  min-height: 4.25rem;
  resize: vertical;
}

.field input:user-invalid,
.field textarea:user-invalid {
  border-color: var(--danger);
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-block-end: 1.15rem;
  font-size: 0.9rem;
  color: var(--muted);
  cursor: pointer;
}

.checkbox-row input[type="checkbox"] {
  width: 1.15rem;
  height: 1.15rem;
  margin: 0;
}

.status-banner {
  margin-block-end: 1.15rem;
  padding: 0.8rem 1rem;
  border-radius: 0.75rem;
  font-size: 0.925rem;
  font-weight: 500;
}

.status-banner[hidden] {
  display: none;
}

.status-banner.is-success {
  background-color: var(--success-bg);
  color: var(--success-text);
}

.status-banner.is-error {
  background-color: var(--error-bg);
  color: var(--error-text);
}

.section-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-block-end: 1rem;
}

.section-header h2 {
  margin: 0;
  font-size: 1.25rem;
}

/* 书架卡片 */
.passage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 22rem), 1fr));
  gap: 1rem;
}

.passage-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.15rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.passage-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.65rem;
}

.passage-card h3 {
  margin: 0;
  font-size: 1.08rem;
  line-height: 1.35;
}

.passage-submeta {
  margin: 0.25rem 0 0;
  font-size: 0.8rem;
  color: var(--muted);
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  white-space: nowrap;
}

.badge-ready {
  background-color: var(--success-bg);
  color: var(--success-text);
}

.badge-pending {
  background-color: var(--warn-bg);
  color: var(--warn-text);
}

.badge-skill {
  background-color: var(--accent-soft);
  color: var(--accent);
}

.passage-summary-snippet {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
}

.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-block-start: auto;
}

.thumb-strip {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(5.5rem, 1fr));
  gap: 0.5rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.thumb-btn {
  display: block;
  width: 100%;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 0.55rem;
  overflow: hidden;
  background-color: var(--surface-alt);
  cursor: pointer;
}

.thumb-btn img {
  display: block;
  width: 100%;
  height: 5.5rem;
  object-fit: cover;
}

.thumb-caption {
  display: block;
  padding: 0.25rem 0.4rem;
  font-size: 0.72rem;
  color: var(--muted);
  text-align: center;
}

/* 精读与答题工作台 */
.reader-topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-block-end: 0.85rem;
}

.reader-hero {
  margin-block-end: 1rem;
}

.reader-hero h2 {
  margin: 0;
  font-size: 1.4rem;
  line-height: 1.3;
}

.reader-summary {
  margin: 0.5rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.mobile-pane-tabs {
  display: flex;
  gap: 0.4rem;
  margin-block-end: 0.85rem;
  background-color: var(--surface);
  padding: 0.35rem;
  border-radius: 0.75rem;
  border: 1px solid var(--border);
}

.pane-tab {
  flex: 1;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  min-height: 40px;
  border: 0;
  border-radius: 0.5rem;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.pane-tab.is-active {
  background-color: var(--accent);
  color: var(--accent-contrast);
}

.reader-workspace[data-active-pane="article"] .pane-quiz,
.reader-workspace[data-active-pane="article"] .pane-photos {
  display: none;
}

.reader-workspace[data-active-pane="quiz"] .pane-article,
.reader-workspace[data-active-pane="quiz"] .pane-photos {
  display: none;
}

.reader-workspace[data-active-pane="photos"] .pane-article,
.reader-workspace[data-active-pane="photos"] .pane-quiz {
  display: none;
}

/* 桌面宽屏自动双栏并排（左读文章、右做题） */
@media (min-width: 62rem) {
  .reader-workspace[data-active-pane="article"],
  .reader-workspace[data-active-pane="quiz"] {
    display: grid;
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 1fr);
    gap: 1.25rem;
    align-items: start;
  }

  .reader-workspace[data-active-pane="article"] .pane-article,
  .reader-workspace[data-active-pane="article"] .pane-quiz,
  .reader-workspace[data-active-pane="quiz"] .pane-article,
  .reader-workspace[data-active-pane="quiz"] .pane-quiz {
    display: block;
  }

  .pane-article {
    position: sticky;
    inset-block-start: 4.5rem;
    max-height: calc(100vh - 5.5rem);
    overflow-y: auto;
  }
}

.reading-tip {
  padding: 0.65rem 0.85rem;
  border-radius: 0.65rem;
  background-color: var(--surface-alt);
  font-size: 0.85rem;
  color: var(--muted);
  margin-block-end: 1.15rem;
}

.para-block {
  margin-block-end: 1.25rem;
  padding: 0.65rem 0.75rem;
  border-radius: 0.65rem;
  transition: background-color 300ms ease;
}

.para-block.is-highlighted {
  background-color: var(--accent-soft);
}

.para-heading {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  font-weight: 700;
}

.para-text {
  margin: 0;
  font-size: 1.06rem;
  line-height: 1.78;
}

.para-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 800;
  padding: 0.1rem 0.45rem;
  margin-inline-end: 0.4rem;
  border-radius: 0.35rem;
  background-color: var(--surface-alt);
  border: 1px solid var(--border);
  vertical-align: baseline;
}

.speak-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  background: transparent;
  cursor: pointer;
  font-size: 0.95rem;
  padding: 0.1rem 0.3rem;
  margin-inline-end: 0.25rem;
  border-radius: 0.35rem;
  color: var(--muted);
}

.speak-btn:hover {
  background-color: var(--surface-alt);
  color: var(--text);
}

.word-token {
  cursor: pointer;
  border-radius: 0.25rem;
  padding-inline: 1px;
  transition: background-color 120ms ease;
}

.word-token:hover,
.word-token.is-selected {
  background-color: var(--accent-soft);
  text-decoration: underline;
  text-decoration-color: var(--accent);
}

.footnotes-box {
  margin-block-start: 1.5rem;
  padding-block-start: 1rem;
  border-block-start: 1px solid var(--border);
}

.footnotes-box h3 {
  margin: 0 0 0.65rem;
  font-size: 0.95rem;
  color: var(--muted);
}

.footnotes-list {
  margin: 0;
  padding-inline-start: 1.25rem;
  font-size: 0.9rem;
  color: var(--muted);
  display: grid;
  gap: 0.35rem;
}

/* 选择题卡片 */
.quiz-score-banner {
  padding: 0.9rem 1rem;
  border-radius: 0.75rem;
  background-color: var(--surface-alt);
  border: 1px solid var(--border);
  margin-block-end: 1rem;
  font-weight: 700;
  font-size: 1.05rem;
}

.questions-container {
  display: grid;
  gap: 1.15rem;
  margin-block-end: 1.25rem;
}

.question-card {
  margin: 0;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  background-color: var(--bg);
}

.question-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-block-end: 0.55rem;
}

.question-num {
  font-weight: 800;
  font-size: 0.9rem;
  color: var(--muted);
}

.question-stem {
  margin: 0 0 0.85rem;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.55;
}

.question-stem u {
  text-underline-offset: 3px;
  text-decoration-thickness: 2px;
}

.options-list {
  display: grid;
  gap: 0.5rem;
}

.option-label {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.65rem 0.8rem;
  border-radius: 0.65rem;
  border: 1px solid var(--border);
  background-color: var(--surface);
  cursor: pointer;
  font-size: 0.95rem;
  line-height: 1.45;
}

.option-label input[type="radio"] {
  margin-block-start: 0.22rem;
  flex-shrink: 0;
}

.option-label:has(input:checked) {
  border-color: var(--accent);
  background-color: var(--accent-soft);
}

.option-label.is-correct-answer {
  border-color: var(--success);
  background-color: var(--success-bg);
  color: var(--success-text);
}

.option-label.is-wrong-choice {
  border-color: var(--danger);
  background-color: var(--error-bg);
  color: var(--error-text);
}

.explanation-box {
  margin-block-start: 0.85rem;
  padding: 0.8rem 0.9rem;
  border-radius: 0.65rem;
  background-color: var(--surface);
  border: 1px solid var(--border);
  font-size: 0.9rem;
  line-height: 1.6;
}

.explanation-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-block-end: 0.4rem;
  font-weight: 700;
}

.quiz-actions {
  display: grid;
  gap: 0.65rem;
}

/* 底部查词浮层（多源词典对比） */
.word-lookup-bar {
  position: fixed;
  inset-inline: 0;
  inset-block-end: 0;
  z-index: 30;
  max-height: min(60dvh, 28rem);
  overflow-y: auto;
  padding: 0.85rem 1rem;
  background-color: var(--surface);
  border-block-start: 2px solid var(--accent);
  box-shadow: 0 -8px 24px rgba(0, 0, 0, 0.18);
}

.word-lookup-bar[hidden] {
  display: none;
}

.word-lookup-inner {
  max-width: 74rem;
  margin-inline: auto;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.85rem;
}

.word-lookup-content {
  flex: 1;
  min-width: 0;
  container-type: inline-size;
}

.word-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  margin-block-end: 0.55rem;
}

.word-head strong {
  font-size: 1.18rem;
}

.word-phonetic {
  font-size: 0.9rem;
  color: var(--muted);
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}

.word-meaning {
  margin: 0;
  font-size: 0.94rem;
}

.lemma-pill,
.dict-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.12rem 0.48rem;
  border-radius: 0.4rem;
  font-size: 0.73rem;
  font-weight: 600;
  background-color: var(--surface-alt);
  border: 1px solid var(--border);
  color: var(--muted);
}

.lemma-pill {
  color: var(--accent);
  border-color: var(--accent-soft);
  background-color: var(--accent-soft);
}

.btn-audio-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.18rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--accent);
  background-color: var(--accent-soft);
  color: var(--accent);
  cursor: pointer;
}

.dict-sources-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.6rem;
}

@media (min-width: 52rem) {
  .word-lookup-content .dict-sources-grid {
    grid-template-columns: repeat(auto-fit, minmax(15.5rem, 1fr));
  }
}

@supports (container-type: inline-size) {
  @media (min-width: 52rem) {
    .word-lookup-content .dict-sources-grid {
      grid-template-columns: 1fr;
    }
  }

  @container (min-width: 36rem) {
    .dict-sources-grid {
      grid-template-columns: repeat(auto-fit, minmax(15.5rem, 1fr));
    }
  }
}

.dict-source-box {
  padding: 0.6rem 0.75rem;
  border-radius: 0.65rem;
  border: 1px solid var(--border);
  background-color: var(--surface-alt);
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.dict-source-box.is-ai {
  background-color: var(--surface);
  border-color: var(--accent);
}

.dict-source-box.is-pending {
  border-style: dashed;
  opacity: 0.88;
}

.dict-source-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.35rem;
}

.dict-source-title {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--muted);
}

.dict-source-box.is-ai .dict-source-title {
  color: var(--accent);
}

.dict-tags-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.dict-zh-lines {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.5;
  white-space: pre-line;
}

.dict-en-lines,
.dict-note-line {
  margin: 0;
  font-size: 0.82rem;
  line-height: 1.45;
  color: var(--muted);
  white-space: pre-line;
}

.dict-senses-list {
  margin: 0;
  padding-inline-start: 1.1rem;
  font-size: 0.85rem;
  line-height: 1.45;
  display: grid;
  gap: 0.2rem;
}

/* 生词本与进度统计 */
.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-block-end: 1rem;
}

.chip {
  font: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  min-height: 38px;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background-color: var(--surface);
  color: var(--muted);
  cursor: pointer;
}

.chip.is-active {
  background-color: var(--accent);
  border-color: var(--accent);
  color: var(--accent-contrast);
}

.vocab-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 22rem), 1fr));
  gap: 0.85rem;
}

.vocab-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  container-type: inline-size;
}

.vocab-card-body {
  display: grid;
  gap: 0.5rem;
}

.vocab-context {
  margin: 0;
  padding: 0.5rem 0.65rem;
  border-radius: 0.5rem;
  background-color: var(--surface-alt);
  font-size: 0.84rem;
  color: var(--muted);
  font-style: italic;
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  gap: 0.85rem;
  margin-block-end: 1.25rem;
}

.kpi-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  padding: 1rem;
}

.kpi-value {
  font-size: 1.75rem;
  font-weight: 800;
  margin: 0;
}

.kpi-label {
  margin: 0.2rem 0 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.progress-columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr));
  gap: 1.25rem;
}

.skill-row {
  margin-block-end: 0.9rem;
}

.skill-row-head {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  font-weight: 600;
  margin-block-end: 0.3rem;
}

.meter-track {
  height: 0.6rem;
  border-radius: 999px;
  background-color: var(--surface-alt);
  overflow: hidden;
}

.meter-fill {
  height: 100%;
  border-radius: 999px;
  background-color: var(--accent);
}

.attempt-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding-block: 0.65rem;
  border-block-end: 1px solid var(--border);
  font-size: 0.9rem;
}

.attempt-row:last-child {
  border-block-end: 0;
}

.empty-state {
  text-align: center;
  padding: 2.25rem 1rem;
  border: 1px dashed var(--border);
  border-radius: 1rem;
  color: var(--muted);
}

/* 原图预览 Lightbox */
dialog.lightbox {
  max-width: min(94vw, 64rem);
  max-height: 92vh;
  width: fit-content;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 1rem;
  background-color: var(--surface);
  color: var(--text);
}

dialog.lightbox::backdrop {
  background: rgba(2, 6, 23, 0.75);
}

.lightbox-inner {
  display: flex;
  flex-direction: column;
  max-height: 92vh;
}

.lightbox-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1rem;
  border-block-end: 1px solid var(--border);
}

.lightbox-title {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 600;
}

.lightbox-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.lightbox-body {
  overflow: auto;
  padding: 0.75rem;
  display: grid;
  place-items: center;
  background-color: var(--surface-alt);
}

.lightbox-body img {
  max-width: 100%;
  max-height: 78vh;
  height: auto;
  border-radius: 0.5rem;
}

/* 网页内连拍相机 */
dialog.scanner-dialog {
  width: min(95vw, 38rem);
}

.scanner-body {
  position: relative;
  background-color: #000;
  display: grid;
  place-items: center;
  min-height: 18rem;
  max-height: 70vh;
  overflow: hidden;
}

.scanner-body video {
  width: 100%;
  max-height: 70vh;
  height: auto;
  object-fit: contain;
  display: block;
}

.scanner-error {
  margin: 0;
  padding: 1.25rem;
  color: #fecaca;
  font-size: 0.925rem;
  line-height: 1.6;
  text-align: center;
}

.scanner-footer {
  padding: 0.85rem 1rem;
  border-block-start: 1px solid var(--border);
  display: flex;
  justify-content: center;
}