/* 天择背单词
   方向：学习任务优先。页面使用一套扁平、清楚的布局，不再叠加历代主题覆盖。 */

body.tzw {
  min-width: 0;
  min-height: 100vh;
}

body.words-modal-open {
  overflow: hidden;
}

body.words-modal-open .words-app {
  z-index: 240;
}

.words-app {
  --words-canvas: var(--tz-skin-canvas, #071522);
  --words-surface: var(--tz-theme-bg, #0d2030);
  --words-surface-strong: var(--tz-theme-bg, #0b1d2c);
  --words-control: var(--tz-theme-bg-soft, #1a3546);
  --words-input: var(--tz-theme-bg-base, #051520);
  --words-line: var(--tz-v4-line, rgba(174, 207, 231, .2));
  --words-accent: var(--tz-skin-focus, #8bc8e8);
  --words-accent-ink: var(--tz-skin-canvas, #071522);
  --words-positive: var(--tz-status-online, #77c79b);
  --words-warning: #d8a545;
  --words-danger: #df6c78;
  --words-scene-veil: rgba(7, 21, 34, .72);
  --words-heading-surface: rgba(7, 21, 34, .74);
  --words-radius: 8px;
  position: relative;
  z-index: 1;
  min-height: calc(100vh - 64px);
  overflow-x: clip;
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
}

body.tzw .words-workspace {
  --tz-section-bg-image: url("../../assets/img/section-bg/source/english-20260828.webp");
  background-color: var(--tz-skin-canvas) !important;
  background-image:
    linear-gradient(180deg, var(--words-scene-veil) 0, color-mix(in srgb, var(--words-canvas) 91%, transparent) 310px, var(--words-canvas) 760px),
    var(--tz-section-bg-image) !important;
  background-position: center top !important;
  background-size: 100% 820px, var(--tz-section-bg-size, cover) !important;
  background-repeat: no-repeat !important;
}

html[data-palette="porcelain"] .words-app {
  --words-canvas: #d9ded8;
  --words-surface: rgba(232, 236, 229, .97);
  --words-surface-strong: #f1f2ec;
  --words-control: #d4ddd7;
  --words-input: #f4f4ee;
  --words-line: rgba(34, 67, 58, .27);
  --words-accent: #075f53;
  --words-accent-ink: #f5f7f1;
  --words-positive: #086d59;
  --words-warning: #8a5a08;
  --words-danger: #a5313e;
  --words-scene-veil: rgba(226, 230, 222, .76);
  --words-heading-surface: rgba(238, 240, 234, .92);
  --ink: #182521;
  --ink-dim: #3f524c;
  --ink-faint: #5f706a;
  --ink-muted: #77847f;
}

html[data-palette="porcelain"] .words-app :is(input, textarea, select, option) {
  color-scheme: light;
  background-color: #f4f4ee;
  color: #182521;
}

@media (max-width: 680px) {
  body.tzw .words-workspace {
    --tz-section-bg-image: url("../../assets/img/section-bg/mobile/english-20260828.webp");
  }
}

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

.words-app > .bg-mesh {
  display: none;
}

.words-app .wrap {
  width: min(1180px, calc(100% - 40px));
  margin-inline: auto;
}

body.tzw.tz-site-shell main.tzw-main {
  padding-top: 0;
}

.words-app [hidden] {
  display: none !important;
}

.words-app h1,
.words-app h2,
.words-app h3,
.words-app p {
  margin-top: 0;
}

.words-app h1,
.words-app h2,
.words-app h3 {
  font-family: inherit;
}

.words-app h2 {
  margin-bottom: 0;
  color: var(--ink);
  font-size: clamp(28px, 3.4vw, 40px);
  line-height: 1.22;
  letter-spacing: -.035em;
}

.words-app h3 {
  margin-bottom: 0;
  color: var(--ink);
  font-size: 18px;
  line-height: 1.4;
}

.words-app .muted {
  color: var(--ink-faint);
  font-size: 13px;
  line-height: 1.7;
}

.words-app .small {
  font-size: 12px;
}

/* Page heading */
.words-app .learning-command {
  border-bottom: 1px solid var(--words-line);
  background: var(--words-heading-surface);
}

.words-app .app-toolbar-inner {
  min-height: 108px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 28px;
  padding-block: 18px;
}

.words-app .command-identity {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 16px;
}

.words-app .command-identity .app-icon {
  display: none;
}

.words-app .command-identity .app-icon .tz-icon {
  width: 30px;
  height: 30px;
}

.words-app .command-identity h1 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(30px, 3.5vw, 40px);
  line-height: 1.1;
  letter-spacing: -.045em;
}

.words-app .command-identity p {
  margin: 7px 0 0;
  color: var(--ink-faint);
  font-size: 14px;
  line-height: 1.6;
}

.words-app .app-toolbar-actions {
  display: flex;
  align-items: center;
  gap: 18px;
}

.words-app .app-stats {
  display: flex;
  align-items: stretch;
  border-block: 1px solid var(--words-line);
}

.words-app .ts-chip {
  min-width: 92px;
  display: grid;
  gap: 3px;
  padding: 9px 14px;
  border-right: 1px solid var(--words-line);
}

.words-app .ts-chip:last-child {
  border-right: 0;
}

.words-app .ts-chip small {
  color: var(--ink-faint);
  font-size: 10px;
}

.words-app .ts-chip b {
  color: var(--ink);
  font-size: 17px;
  font-variant-numeric: tabular-nums;
}

.words-app .ts-chip em {
  margin-left: 2px;
  color: var(--ink-faint);
  font-size: 10px;
  font-style: normal;
  font-weight: 500;
}

.words-app .command-actions {
  display: grid;
  justify-items: end;
  gap: 8px;
}

.words-app .local-state,
.words-app .view-state {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--ink-faint);
  font-size: 11px;
}

.words-app .local-state > span,
.words-app .view-state > span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--words-positive);
}

/* Primary task navigation */
.words-app .tzw-main {
  padding-bottom: 128px;
}

.words-app .mode-switcher {
  position: sticky;
  z-index: 22;
  top: 64px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-bottom: 1px solid var(--words-line);
  background: color-mix(in srgb, var(--words-surface-strong) 94%, transparent);
}

.words-app .nav-item {
  position: relative;
  min-width: 0;
  min-height: 60px;
  display: grid;
  grid-template-columns: auto;
  grid-template-rows: auto auto;
  align-content: center;
  justify-content: center;
  gap: 1px;
  padding: 10px 16px;
  border: 0;
  background: transparent;
  color: var(--ink-faint);
  font: inherit;
  text-align: left;
  cursor: pointer;
  touch-action: manipulation;
  transition: color .16s ease, background-color .16s ease;
}

.words-app .nav-item::after {
  content: "";
  position: absolute;
  right: 18px;
  bottom: -1px;
  left: 18px;
  height: 2px;
  background: transparent;
}

.words-app .nav-item > .tz-icon {
  display: none;
}

.words-app .nav-item > span:not(.tz-icon) {
  color: var(--ink-dim);
  font-size: 14px;
  font-weight: 700;
}

.words-app .nav-item > small {
  color: var(--ink-muted);
  font-size: 10px;
}

.words-app .nav-item:hover,
.words-app .nav-item:focus-visible {
  color: var(--ink);
  background: color-mix(in srgb, var(--words-control) 55%, transparent);
}

.words-app .nav-item.active {
  color: var(--words-accent);
}

.words-app .nav-item.active::after {
  background: var(--words-accent);
}

.words-app .nav-item.active > span:not(.tz-icon) {
  color: var(--ink);
}

/* Views */
.words-app .tzw-panel-wrap {
  min-width: 0;
}

.words-app .panel {
  display: none;
  padding-top: clamp(34px, 5vw, 58px);
}

.words-app .panel.active {
  display: block;
}

.words-app .view-heading {
  min-height: 76px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 24px;
}

.words-app .view-heading > div {
  min-width: 0;
}

.words-app .view-heading p {
  max-width: 720px;
  margin: 10px 0 0;
  color: var(--ink-faint);
  line-height: 1.7;
}

.words-app .section-index {
  display: block;
  margin-bottom: 7px;
  color: var(--words-accent);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .04em;
}

.words-app .card,
.words-app .modal-card {
  border: 1px solid var(--words-line);
  border-radius: var(--words-radius);
  background-color: var(--words-surface) !important;
  background-image: none !important;
  box-shadow: none;
}

.words-app :is(.card, .modal-card, .view-heading, .workspace-card-head, .library-browser-head, .review-queue-head) > * {
  min-width: 0;
}

.words-app .card::before,
.words-app .card::after {
  display: none;
}

.words-app .card + .card {
  margin-top: 16px;
}

.words-app .workspace-card-head,
.words-app .library-browser-head,
.words-app .insight-head,
.words-app .review-queue-head,
.words-app .form-section-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}

.words-app .workspace-state {
  flex: 0 0 auto;
  color: var(--ink-faint);
  font-size: 11px;
}

/* Buttons and form controls */
.words-app .btn,
.words-app .tts-btn,
.words-app .modal-close,
.words-app .vi-btn,
.words-app .wi-actions button,
.words-app .chip,
.words-app .opt,
.words-app .qi-opt {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 9px 14px;
  border: 1px solid var(--words-line);
  border-radius: 6px;
  background-color: var(--words-control);
  background-image: none !important;
  color: var(--ink);
  box-shadow: none;
  font: inherit;
  font-size: 13px;
  font-weight: 650;
  line-height: 1.25;
  text-decoration: none;
  cursor: pointer;
  touch-action: manipulation;
  transition: border-color .16s ease, background-color .16s ease, color .16s ease, filter .16s ease;
}

.words-app .tts-btn .tz-icon {
  width: 16px;
  height: 16px;
}

.words-app .btn .tz-icon {
  display: none;
}

.words-app .btn--primary,
.words-app .btn:not(.btn--ghost):not(.btn--secondary):not(.btn--quiet):not(.btn--danger) {
  border-color: var(--words-accent) !important;
  background-color: var(--words-accent) !important;
  color: var(--words-accent-ink) !important;
}

.words-app .btn--secondary {
  border-color: var(--words-line) !important;
  background-color: var(--words-control) !important;
  color: var(--ink) !important;
}

.words-app .btn--quiet,
.words-app .btn--ghost {
  background-color: transparent !important;
  color: var(--ink-dim) !important;
}

.words-app .btn--danger {
  border-color: color-mix(in srgb, var(--words-danger) 55%, var(--words-line)) !important;
  background-color: transparent !important;
  color: var(--words-danger) !important;
}

.words-app .btn--sm {
  min-height: 36px;
  padding: 7px 11px;
  font-size: 12px;
}

.words-app :is(.btn, .tts-btn, .modal-close, .vi-btn, .wi-actions button, .chip, .opt, .qi-opt):hover:not(:disabled) {
  border-color: var(--words-accent);
  color: var(--ink);
}

.words-app .btn--primary:hover:not(:disabled) {
  color: var(--words-accent-ink) !important;
  filter: brightness(1.08);
}

.words-app :is(button, input, textarea, select, [tabindex]):focus-visible {
  outline: 3px solid color-mix(in srgb, var(--words-accent) 42%, transparent);
  outline-offset: 3px;
}

.words-app :is(button, input, textarea, select):disabled {
  cursor: not-allowed;
  opacity: .48;
}

.words-app input[type="text"],
.words-app input[type="search"],
.words-app input[type="number"],
.words-app input[type="password"],
.words-app input[type="url"],
.words-app select,
.words-app textarea {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--words-line);
  border-radius: 6px;
  outline: none;
  background-color: var(--words-input) !important;
  background-image: none !important;
  color: var(--ink);
  font: inherit;
  font-size: 14px;
}

.words-app textarea {
  min-height: 180px;
  resize: vertical;
  line-height: 1.6;
}

.words-app :is(input, select, textarea):focus {
  border-color: var(--words-accent);
}

.words-app :is(input, textarea)::placeholder {
  color: var(--ink-muted);
  opacity: 1;
}

.words-app .row,
.words-app .row-between,
.words-app .actions,
.words-app .quiz-actions,
.words-app .feedback-actions,
.words-app .spell-actions,
.words-app .spell-prompt-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.words-app .row-between {
  justify-content: space-between;
}

/* Library */
.words-app .library-command-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, .65fr);
  gap: 16px;
}

.words-app .library-command-grid > .card {
  margin-top: 0;
}

.words-app .import-console {
  padding: clamp(22px, 3vw, 30px);
}

.words-app .import-console > .muted {
  max-width: 720px;
  margin: 10px 0 0;
}

.words-app .action-cluster {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.words-app .library-maintenance {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--words-line);
}

.words-app .library-maintenance > span {
  margin-right: auto;
  color: var(--ink-faint);
  font-size: 11px;
}

.words-app .import-status {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 16px;
  color: var(--ink-dim);
  font-size: 12px;
}

.words-app .spinner {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
  border: 2px solid color-mix(in srgb, var(--words-accent) 25%, transparent);
  border-top-color: var(--words-accent);
  border-radius: 50%;
  animation: words-spin .8s linear infinite;
}

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

.words-app .library-telemetry {
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding: 22px;
  border-left: 1px solid var(--words-line) !important;
}

.words-app .telemetry-head {
  grid-column: 1 / -1;
  margin-bottom: 18px;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--words-line);
}

.words-app .telemetry-head p {
  max-width: 360px;
  margin: 0;
  color: var(--ink-faint);
  font-size: 12px;
  line-height: 1.6;
}

.words-app .vs-item {
  min-width: 0;
  padding: 14px 12px;
  border-right: 1px solid var(--words-line);
  border-bottom: 1px solid var(--words-line);
}

.words-app .vs-item:nth-child(odd) {
  border-right: 0;
}

.words-app .vs-item:nth-last-child(-n + 2) {
  border-bottom: 0;
}

.words-app .vs-item > span,
.words-app .stat-card > span {
  display: block;
  color: var(--ink-faint);
  font-size: 11px;
}

.words-app .vs-item > b,
.words-app .stat-card > b {
  display: block;
  margin-top: 6px;
  color: var(--ink);
  font-size: 27px;
  font-variant-numeric: tabular-nums;
}

.words-app .vs-item > small,
.words-app .stat-card > small {
  display: block;
  margin-top: 3px;
  color: var(--ink-muted);
  font-size: 10px;
}

.words-app .library-browser {
  margin-top: 18px;
  padding: 22px;
}

.words-app .library-browser-head {
  align-items: end;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--words-line);
}

.words-app .search-shell {
  width: min(360px, 100%);
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  color: var(--ink-faint);
}

.words-app .search-shell > span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
}

.words-app .search-shell .search {
  min-height: 42px;
}

.words-app .vocab-list {
  max-height: 640px;
  overflow: auto;
  overscroll-behavior: contain;
  scrollbar-color: var(--words-line) transparent;
}

.words-app .vocab-item {
  display: grid;
  grid-template-columns: minmax(120px, .7fr) auto minmax(110px, .65fr) minmax(200px, 1.4fr) 96px auto;
  align-items: center;
  gap: 10px 16px;
  min-height: 68px;
  padding: 12px 4px;
  border-bottom: 1px solid var(--words-line);
}

.words-app .vocab-item:last-child {
  border-bottom: 0;
}

.words-app .vocab-item:hover,
.words-app .vocab-item:focus-within {
  background: color-mix(in srgb, var(--words-control) 38%, transparent);
}

.words-app .vi-word {
  min-width: 0;
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 18px;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.words-app .vi-pos {
  color: var(--words-accent);
  font-size: 11px;
}

.words-app .vi-phon {
  color: var(--ink-faint);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 12px;
}

.words-app .vi-meaning {
  min-width: 0;
  color: var(--ink-dim);
  font-size: 13px;
  line-height: 1.55;
}

.words-app .vi-mastery {
  display: flex;
  gap: 4px;
}

.words-app .vi-mastery i {
  width: 7px;
  height: 7px;
  border: 1px solid var(--words-line);
  border-radius: 50%;
}

.words-app .vi-mastery i.on {
  border-color: var(--words-positive);
  background: var(--words-positive);
}

.words-app .vi-actions,
.words-app .wi-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.words-app .vi-btn,
.words-app .wi-actions button {
  width: 38px;
  min-height: 38px;
  padding: 0;
  background: transparent;
}

.words-app .vi-btn .tz-icon,
.words-app .wi-actions button .tz-icon {
  width: 16px;
  height: 16px;
}

.words-app .vocab-more {
  width: 100%;
  margin-top: 12px;
}

.words-app .empty-state {
  min-height: 220px;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 8px;
  padding: 36px 20px;
  color: var(--ink-faint);
  text-align: center;
}

.words-app .empty-state .es-icon {
  color: var(--words-accent);
}

.words-app .empty-state .es-icon .tz-icon {
  width: 32px;
  height: 32px;
}

.words-app .empty-state strong {
  color: var(--ink-dim);
}

.words-app .empty-state .btn {
  margin-top: 8px;
}

/* Study */
.words-app .training-deck,
.words-app .study-card,
.words-app .quiz-card,
.words-app .spell-card {
  padding: clamp(22px, 4vw, 36px);
}

.words-app .training-start-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr);
  gap: clamp(28px, 5vw, 60px);
}

.words-app .training-route-head p {
  max-width: 560px;
  margin: 10px 0 0;
  color: var(--ink-faint);
  line-height: 1.7;
}

.words-app .study-flow {
  margin: 26px 0 0;
  padding: 0;
  border-top: 1px solid var(--words-line);
  list-style: none;
}

.words-app .sf-step {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 16px;
  padding-block: 18px;
  border-bottom: 1px solid var(--words-line);
}

.words-app .sf-step > b {
  color: var(--ink-muted);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

.words-app .sf-step strong,
.words-app .sf-step span {
  display: block;
}

.words-app .sf-step strong {
  color: var(--ink);
  font-size: 14px;
}

.words-app .sf-step span {
  margin-top: 4px;
  color: var(--ink-faint);
  font-size: 12px;
}

.words-app .session-config {
  padding-left: 28px;
  border-left: 1px solid var(--words-line);
}

.words-app .session-config h3 {
  margin-bottom: 20px;
}

.words-app .config-field {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  gap: 5px 12px;
  margin-bottom: 14px;
}

.words-app .config-field > span {
  color: var(--ink-dim);
  font-size: 12px;
  font-weight: 650;
}

.words-app .config-field > small {
  color: var(--ink-muted);
  font-size: 10px;
}

.words-app .config-field > input {
  grid-column: 1 / -1;
}

.words-app .option-switch {
  min-height: 58px;
  display: grid;
  grid-template-columns: 42px 1fr;
  align-items: center;
  gap: 12px;
  padding-block: 9px;
  cursor: pointer;
}

.words-app .option-switch > input {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  opacity: 0;
}

.words-app .option-switch-ui {
  position: relative;
  width: 40px;
  height: 22px;
  border: 1px solid var(--words-line);
  border-radius: 999px;
  background: var(--words-input);
}

.words-app .option-switch-ui::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--ink-faint);
  transition: transform .18s ease, background-color .18s ease;
}

.words-app .option-switch > input:checked + .option-switch-ui {
  border-color: var(--words-accent);
}

.words-app .option-switch > input:checked + .option-switch-ui::after {
  background: var(--words-accent);
  transform: translateX(18px);
}

.words-app .option-switch > input:focus-visible + .option-switch-ui {
  outline: 3px solid color-mix(in srgb, var(--words-accent) 42%, transparent);
  outline-offset: 3px;
}

.words-app .option-switch b,
.words-app .option-switch small {
  display: block;
}

.words-app .option-switch b {
  color: var(--ink-dim);
  font-size: 12px;
}

.words-app .option-switch small {
  margin-top: 3px;
  color: var(--ink-muted);
  font-size: 10px;
}

.words-app .btn--launch {
  width: 100%;
  margin-top: 16px;
}

.words-app .session-note {
  display: flex;
  align-items: center;
  gap: 7px;
  margin: 12px 0 0;
  color: var(--ink-muted);
  font-size: 10px;
  line-height: 1.5;
}

.words-app .stage-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  margin-bottom: 24px;
}

.words-app .si-step {
  min-width: 34px;
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1px solid var(--words-line);
  border-radius: 50%;
  color: var(--ink-muted);
  font-size: 11px;
}

.words-app .si-step.active {
  border-color: var(--words-accent);
  color: var(--words-accent);
}

.words-app .si-step.done {
  border-color: var(--words-positive);
  color: var(--words-positive);
}

.words-app .si-step .tz-icon,
.words-app .si-arrow .tz-icon {
  width: 14px;
  height: 14px;
}

.words-app .si-arrow {
  color: var(--ink-muted);
}

.words-app .stage-briefing,
.words-app .stage-info {
  max-width: 650px;
  margin: 0 auto 22px;
  text-align: center;
}

.words-app #studyStage > .btn {
  display: flex;
  margin-inline: auto;
}

.words-app .stage-result {
  display: none;
  margin-top: 16px;
  padding: 14px;
  border-block: 1px solid var(--words-line);
}

.words-app .stage-result.show {
  display: block;
}

.words-app .sr-row {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  color: var(--ink-faint);
  font-size: 12px;
}

.words-app .quiz-progress,
.words-app .spell-progress {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
  color: var(--ink-faint);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.words-app .quiz-progress .bar,
.words-app .spell-progress .bar {
  height: 4px;
  overflow: hidden;
  border-radius: 99px;
  background: var(--words-control);
}

.words-app .quiz-progress .bar i,
.words-app .spell-progress .bar i {
  display: block;
  width: 0;
  height: 100%;
  background: var(--words-accent);
  transition: width .2s ease;
}

.words-app .quiz-question,
.words-app .spell-prompt {
  min-height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 26px;
  border-block: 1px solid var(--words-line);
  text-align: center;
}

.words-app .q-prompt,
.words-app .sp-prompt {
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(28px, 5vw, 46px);
  line-height: 1.25;
}

.words-app .q-prompt.multi,
.words-app .sp-meaning {
  font-family: inherit;
  font-size: 18px;
  text-align: left;
}

.words-app .q-sub {
  margin-top: 12px;
  color: var(--ink-faint);
  font-size: 12px;
}

.words-app .sp-pos,
.words-app .sp-phon {
  color: var(--words-accent);
  font-size: 13px;
}

.words-app .sp-meaning {
  margin: 12px 0 0;
  padding-left: 22px;
  color: var(--ink-dim);
  line-height: 1.7;
}

.words-app .quiz-options,
.words-app .quiz-opts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 22px;
}

.words-app .quiz-options.multi {
  grid-template-columns: 1fr;
}

.words-app .opt {
  min-height: 54px;
  justify-content: flex-start;
  padding: 12px 16px;
  background: transparent;
  color: var(--ink-dim);
  text-align: left;
}

.words-app .opt.selected {
  border-color: var(--words-accent);
  background: color-mix(in srgb, var(--words-accent) 11%, transparent);
}

.words-app .opt.correct,
.words-app .qi-opt.correct {
  border-color: var(--words-positive);
  background: color-mix(in srgb, var(--words-positive) 14%, transparent);
  color: var(--words-positive);
}

.words-app .opt.wrong,
.words-app .opt.missed,
.words-app .qi-opt.wrong {
  border-color: var(--words-danger);
  background: color-mix(in srgb, var(--words-danger) 12%, transparent);
  color: var(--words-danger);
}

.words-app .opt.locked {
  cursor: default;
}

.words-app .opt.checkable::before {
  content: "";
  width: 16px;
  height: 16px;
  flex: 0 0 16px;
  border: 1px solid var(--words-line);
  border-radius: 3px;
}

.words-app .opt.checkable.selected::before {
  border-color: var(--words-accent);
  background: var(--words-accent);
  box-shadow: inset 0 0 0 3px var(--words-input);
}

.words-app .spell-input {
  min-height: 58px;
  margin-top: 22px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 24px;
  text-align: center;
}

.words-app .spell-prompt-row {
  justify-content: center;
  margin-top: 14px;
}

.words-app .quiz-actions,
.words-app .spell-actions {
  justify-content: flex-end;
  margin-top: 20px;
}

.words-app .quiz-feedback,
.words-app .spell-feedback {
  margin-top: 18px;
  padding: 18px;
  border: 1px solid var(--words-line);
  border-radius: 6px;
  color: var(--ink-dim);
  line-height: 1.65;
}

.words-app .quiz-feedback.ok,
.words-app .spell-feedback.ok {
  border-color: color-mix(in srgb, var(--words-positive) 55%, var(--words-line));
}

.words-app .quiz-feedback.bad,
.words-app .spell-feedback.bad {
  border-color: color-mix(in srgb, var(--words-danger) 55%, var(--words-line));
}

.words-app .quiz-feedback .ans,
.words-app .spell-feedback .ans {
  margin-top: 7px;
  color: var(--ink-dim);
}

.words-app .feedback-actions {
  margin-top: 16px;
}

.words-app .preview-card {
  margin-top: 16px;
  padding: 18px;
  border: 1px solid var(--words-line);
  border-radius: 6px;
  background: var(--words-input);
}

.words-app .pv-head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
}

.words-app .pv-word {
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 24px;
  font-weight: 700;
}

.words-app .pv-pos,
.words-app .pv-phon {
  color: var(--words-accent);
  font-size: 12px;
}

.words-app .pv-meaning {
  margin: 12px 0 0;
  padding-left: 22px;
  color: var(--ink-dim);
  line-height: 1.65;
}

.words-app .pv-examples {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--words-line);
}

.words-app .pv-examples-title {
  margin-bottom: 9px;
  color: var(--ink-faint);
  font-size: 11px;
}

.words-app .pv-example + .pv-example {
  margin-top: 10px;
}

.words-app .pv-example-en {
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
}

.words-app .pv-example-zh,
.words-app .pv-example-empty {
  margin-top: 3px;
  color: var(--ink-faint);
  font-size: 12px;
}

.words-app .q-word {
  font-family: Georgia, "Times New Roman", serif;
}

.words-app .q-example-en {
  max-width: 700px;
  margin: 14px auto 0;
  color: var(--ink-faint);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 14px;
  line-height: 1.6;
}

.words-app .ex-hl,
.words-app .highlight {
  color: var(--words-accent);
  font-weight: 700;
}

.words-app .diff {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  margin-top: 10px;
  font-family: ui-monospace, Consolas, monospace;
  font-size: 18px;
}

.words-app .diff .char {
  padding: 2px 3px;
  border-radius: 3px;
}

.words-app .diff .char.ok {
  color: var(--words-positive);
}

.words-app .diff .char.bad,
.words-app .diff .char.miss {
  color: var(--words-danger);
  background: color-mix(in srgb, var(--words-danger) 12%, transparent);
}

.words-app .quiz-result {
  padding: 24px 0;
  text-align: center;
}

.words-app .qr-score {
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(44px, 8vw, 72px);
  font-variant-numeric: tabular-nums;
}

.words-app .qr-meta {
  margin-top: 8px;
  color: var(--ink-faint);
}

.words-app .qr-wrong-list {
  max-width: 650px;
  margin: 24px auto 0;
  border-top: 1px solid var(--words-line);
}

.words-app .qr-wrong-item {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding-block: 12px;
  border-bottom: 1px solid var(--words-line);
  color: var(--ink-faint);
}

.words-app .result-celebration {
  margin-top: 18px;
  color: var(--words-positive);
  font-weight: 700;
}

.words-app .ai-loading {
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--ink-faint);
}

/* Statistics and wrong words */
.words-app .stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  overflow: hidden;
  border: 1px solid var(--words-line);
  border-radius: var(--words-radius);
  background: var(--words-surface);
}

.words-app .stat-card {
  min-height: 118px;
  margin: 0 !important;
  padding: 20px;
  border: 0;
  border-right: 1px solid var(--words-line);
  border-radius: 0;
  background-color: transparent !important;
}

.words-app .stat-card:last-child {
  border-right: 0;
}

.words-app .stat-card > b {
  color: var(--ink);
  font-size: 32px;
}

.words-app [data-tone="blue"] {
  --metric-color: var(--words-accent);
}

.words-app [data-tone="violet"] {
  --metric-color: var(--words-accent);
}

.words-app [data-tone="green"] {
  --metric-color: var(--words-positive);
}

.words-app [data-tone="amber"] {
  --metric-color: var(--words-warning);
}

.words-app .insight-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(280px, .7fr);
  gap: 14px;
  margin-top: 14px;
}

.words-app .insight-card,
.words-app .review-queue {
  padding: 22px;
}

.words-app .insight-card--review {
  grid-column: 1 / -1;
}

.words-app .chart-legend {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--ink-faint);
  font-size: 10px;
}

.words-app .chart-legend i {
  width: 8px;
  height: 8px;
  background: var(--words-accent);
}

.words-app .chart-bars {
  height: 220px;
  display: flex;
  align-items: end;
  gap: 7px;
  margin-top: 24px;
  padding-top: 16px;
  border-bottom: 1px solid var(--words-line);
}

.words-app .chart-bars .cb {
  position: relative;
  min-width: 5px;
  flex: 1;
  background: var(--words-accent);
  opacity: .72;
}

.words-app .chart-bars .cb:hover {
  opacity: 1;
}

.words-app .chart-bars .cb.empty {
  min-height: 2px;
  opacity: .18;
}

.words-app .mastery-dist {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.words-app .md-row {
  display: grid;
  grid-template-columns: 66px 1fr 32px;
  align-items: center;
  gap: 10px;
  color: var(--ink-faint);
  font-size: 11px;
}

.words-app .md-bar {
  height: 6px;
  overflow: hidden;
  background: var(--words-control);
}

.words-app .md-bar i {
  display: block;
  height: 100%;
  background: var(--words-accent);
}

.words-app .md-count {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.words-app .review-queue {
  margin-top: 14px;
}

.words-app .review-queue-head {
  align-items: center;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--words-line);
}

.words-app .review-queue-head > p {
  max-width: 420px;
  margin: 0;
  color: var(--ink-faint);
  font-size: 11px;
  line-height: 1.55;
}

.words-app .wrong-list {
  max-height: 440px;
  overflow: auto;
  overscroll-behavior: contain;
}

.words-app .wrong-item {
  display: grid;
  grid-template-columns: minmax(120px, .55fr) minmax(180px, 1fr) 54px auto;
  align-items: center;
  gap: 12px;
  min-height: 62px;
  padding: 10px 4px;
  border-bottom: 1px solid var(--words-line);
}

.words-app .wrong-item:last-child {
  border-bottom: 0;
}

.words-app .wi-word {
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 17px;
  font-weight: 700;
}

.words-app .wi-meaning {
  min-width: 0;
  color: var(--ink-faint);
  font-size: 12px;
}

.words-app .wi-count {
  color: var(--words-warning);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
}

/* Dialogs */
.words-app .modal {
  position: fixed;
  z-index: 220;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 18px;
  overscroll-behavior: contain;
}

.words-app .modal-mask {
  position: absolute;
  inset: 0;
  background: var(--tz-skin-backdrop, rgba(0, 8, 14, .78));
}

.words-app .modal-card {
  position: relative;
  z-index: 1;
  width: min(680px, 100%);
  max-height: min(820px, calc(100dvh - 36px));
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background-color: var(--words-surface-strong) !important;
}

.words-app .modal-card--wide {
  width: min(900px, 100%);
}

.words-app .modal-card--word {
  width: min(720px, 100%);
}

.words-app .modal-card > form {
  min-height: 0;
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
}

.words-app .modal-card:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--words-accent) 42%, transparent);
  outline-offset: -3px;
}

.words-app .modal-head,
.words-app .modal-foot {
  flex: 0 0 auto;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 20px;
}

.words-app .modal-head {
  border-bottom: 1px solid var(--words-line);
}

.words-app .modal-head h2 {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: inherit;
  font-size: 22px;
  letter-spacing: -.02em;
}

.words-app .modal-head p {
  max-width: 560px;
  margin: 7px 0 0;
  color: var(--ink-faint);
  font-size: 12px;
  line-height: 1.6;
}

.words-app .modal-close {
  width: 40px;
  min-height: 40px;
  flex: 0 0 40px;
  padding: 0;
  background: transparent;
}

.words-app .modal-close .tz-icon {
  width: 18px;
  height: 18px;
}

.words-app .modal-body {
  min-height: 0;
  flex: 1 1 auto;
  overflow: auto;
  overscroll-behavior: contain;
  padding: 20px;
}

.words-app .modal-foot {
  justify-content: flex-end;
  border-top: 1px solid var(--words-line);
}

.words-app .form-section-head {
  align-items: baseline;
}

.words-app .form-section-head > span {
  color: var(--ink);
  font-weight: 700;
}

.words-app .form-section-head > small {
  color: var(--ink-muted);
  font-size: 10px;
}

.words-app .ai-mode-picker {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
  padding: 0;
  border: 0;
}

.words-app .ai-mode-picker legend {
  width: 100%;
  margin-bottom: 10px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
}

.words-app .ai-mode-option {
  min-width: 0;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: 10px;
  padding: 13px 14px;
  border: 1px solid var(--words-line);
  border-radius: 6px;
  background: var(--words-control);
  cursor: pointer;
}

.words-app .ai-mode-option:has(input:checked) {
  border-color: var(--words-accent);
  background: color-mix(in srgb, var(--words-accent) 10%, var(--words-surface));
}

.words-app .ai-mode-option input {
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
  accent-color: var(--words-accent);
}

.words-app .ai-mode-option > span {
  min-width: 0;
  display: grid;
  gap: 4px;
}

.words-app .ai-mode-option b {
  color: var(--ink);
  font-size: 13px;
}

.words-app .ai-mode-option small {
  color: var(--ink-faint);
  font-size: 11px;
  font-weight: 500;
  line-height: 1.5;
}

.words-app .managed-ai-note {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: 10px;
  margin-top: 16px;
  padding: 14px;
  border-block: 1px solid var(--words-line);
  color: var(--words-accent);
}

.words-app .managed-ai-note > div {
  display: grid;
  gap: 4px;
}

.words-app .managed-ai-note b {
  color: var(--ink);
  font-size: 12px;
}

.words-app .managed-ai-note span {
  color: var(--ink-faint);
  font-size: 11px;
  line-height: 1.6;
}

.words-app #customAiFields {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--words-line);
}

.words-app .preset-chips {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 14px;
}

.words-app .preset-card {
  min-height: 66px;
  display: grid;
  justify-items: start;
  gap: 4px;
  padding: 10px 12px;
  background: transparent;
  text-align: left;
}

.words-app .preset-card > span {
  color: var(--ink);
  font-size: 12px;
}

.words-app .preset-card > small {
  color: var(--ink-faint);
  font-size: 10px;
  font-weight: 500;
}

.words-app .config-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 22px;
}

.words-app .config-form-grid .config-field {
  display: grid;
  grid-template-columns: 1fr;
  margin: 0;
}

.words-app .config-form-grid .config-field--wide {
  grid-column: 1 / -1;
}

.words-app .privacy-note {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--words-line);
  color: var(--ink-faint);
  font-size: 11px;
  line-height: 1.6;
}

.words-app .add-word-form {
  display: grid;
  gap: 17px;
}

.words-app .add-word-meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.words-app .add-word-form textarea {
  min-height: 124px;
}

.words-app .config-field > span > b {
  color: var(--words-danger);
  font-size: 12px;
}

.words-app .form-message {
  min-height: 20px;
  margin: 0;
  color: var(--ink-faint);
  font-size: 12px;
  line-height: 1.6;
}

.words-app .form-message--error {
  padding-left: 10px;
  border-left: 3px solid var(--words-danger);
  color: var(--words-danger);
}

.words-app .add-word-actions {
  align-items: center;
}

.words-app .add-word-actions #addWordCancel {
  margin-right: auto;
}

.words-app .code-input {
  display: grid;
  gap: 8px;
  color: var(--ink-dim);
  font-size: 12px;
}

.words-app .code-input textarea,
.words-app .schema-code {
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 12px;
}

.words-app .schema-code {
  max-height: 320px;
  overflow: auto;
  margin: 0;
  padding: 16px;
  border: 1px solid var(--words-line);
  background: var(--words-input);
  color: var(--ink-dim);
  white-space: pre-wrap;
}

.words-app .schema-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 18px;
  margin: 18px 0 0;
}

.words-app .schema-fields > div {
  padding-block: 10px;
  border-bottom: 1px solid var(--words-line);
}

.words-app .schema-fields dt {
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.words-app .schema-fields code {
  color: var(--words-accent);
}

.words-app .schema-fields dt > span,
.words-app .schema-fields dd {
  color: var(--ink-muted);
  font-size: 10px;
}

.words-app .schema-fields dd {
  margin: 5px 0 0;
}

.words-app .ai-status {
  display: none;
  margin-bottom: 14px;
  padding: 12px 14px;
  border: 1px solid var(--words-line);
  color: var(--ink-faint);
  font-size: 12px;
}

.words-app .ai-status.show {
  display: block;
}

.words-app .ai-status.ok {
  border-color: var(--words-positive);
}

.words-app .ai-status.error {
  border-color: var(--words-danger);
}

.words-app .ai-stream,
.words-app .md-body {
  color: var(--ink-dim);
  font-size: 14px;
  line-height: 1.75;
}

.words-app .ai-stream :is(h1, h2, h3),
.words-app .md-body :is(h1, h2, h3) {
  margin: 20px 0 8px;
  color: var(--ink);
  font-family: inherit;
  font-size: 17px;
}

.words-app .ai-stream :is(ul, ol),
.words-app .md-body :is(ul, ol) {
  padding-left: 22px;
}

.words-app .ai-stream code,
.words-app .md-body code {
  color: var(--words-accent);
  font-family: ui-monospace, Consolas, monospace;
}

.words-app .ai-stream details {
  margin-bottom: 14px;
  padding: 12px;
  border: 1px solid var(--words-line);
}

.words-app .ai-stream summary {
  color: var(--ink-faint);
  cursor: pointer;
}

.words-app .example-item {
  padding-block: 14px;
  border-bottom: 1px solid var(--words-line);
}

.words-app .example-item .ex-en {
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.6;
}

.words-app .example-item .ex-zh {
  margin-top: 5px;
  color: var(--ink-faint);
  font-size: 12px;
}

.words-app .ai-quiz-item {
  margin-top: 14px;
  padding: 16px;
  border: 1px solid var(--words-line);
}

.words-app .qi-word,
.words-app .qi-stem {
  margin-bottom: 8px;
  color: var(--ink-dim);
}

.words-app .qi-opts {
  display: grid;
  gap: 8px;
}

.words-app .qi-opt {
  justify-content: flex-start;
  background: transparent;
  text-align: left;
}

.words-app .qi-explain {
  margin-top: 12px;
  color: var(--ink-faint);
}

/* Toasts */
.words-app .toast-wrap {
  position: fixed;
  z-index: 260;
  right: max(18px, env(safe-area-inset-right));
  bottom: max(96px, calc(env(safe-area-inset-bottom) + 18px));
  width: min(360px, calc(100vw - 36px));
  display: grid;
  gap: 8px;
  pointer-events: none;
}

.words-app .toast {
  padding: 13px 15px;
  border: 1px solid var(--words-line);
  border-radius: 6px;
  background: var(--words-surface-strong);
  color: var(--ink);
  box-shadow: 0 12px 34px rgba(0, 0, 0, .24);
  font-size: 13px;
  line-height: 1.5;
  animation: words-toast-in .18s ease both;
}

.words-app .toast.success {
  border-color: var(--words-positive);
}

.words-app .toast.error {
  border-color: var(--words-danger);
}

.words-app .toast.warn {
  border-color: var(--words-warning);
}

.words-app .toast.leaving {
  animation: words-toast-out .16s ease forwards;
}

@keyframes words-toast-in {
  from { opacity: 0; transform: translateY(8px); }
}

@keyframes words-toast-out {
  to { opacity: 0; transform: translateY(8px); }
}

@media (max-width: 980px) {
  .words-app .app-toolbar-inner {
    grid-template-columns: 1fr;
  }

  .words-app .app-toolbar-actions {
    justify-content: space-between;
  }

  .words-app .library-command-grid,
  .words-app .training-start-grid,
  .words-app .insight-grid {
    grid-template-columns: 1fr;
  }

  .words-app .library-telemetry {
    border-top: 1px solid var(--words-line) !important;
    border-left: 0 !important;
  }

  .words-app .session-config {
    padding: 28px 0 0;
    border-top: 1px solid var(--words-line);
    border-left: 0;
  }

  .words-app .insight-card--review {
    grid-column: 1;
  }

  .words-app .vocab-item {
    grid-template-columns: minmax(120px, .75fr) auto minmax(100px, .7fr) minmax(200px, 1.5fr) auto;
  }

  .words-app .vi-mastery {
    display: none;
  }
}

@media (max-width: 720px) {
  .words-app :is(input[type="text"], input[type="search"], input[type="number"], input[type="password"], input[type="url"], select, textarea) {
    font-size: 16px;
  }

  .words-app .wrap {
    width: min(100% - 24px, 1180px);
  }

  .words-app .app-toolbar-inner {
    min-height: 0;
    gap: 20px;
    padding-block: 20px;
  }

  .words-app .command-identity {
    align-items: flex-start;
  }

  .words-app .command-identity h1 {
    font-size: 34px;
  }

  .words-app .app-toolbar-actions {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 12px;
  }

  .words-app .app-stats {
    grid-column: 1 / -1;
    width: 100%;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .words-app .ts-chip {
    min-width: 0;
    padding-inline: 10px;
  }

  .words-app .command-actions {
    grid-column: 1 / -1;
    grid-template-columns: 1fr auto;
    align-items: center;
    justify-items: start;
  }

  .words-app .mode-switcher {
    top: 58px;
  }

  .words-app .nav-item {
    min-height: 58px;
    grid-template-columns: auto;
    grid-template-rows: auto;
    justify-items: center;
    padding: 8px 5px;
    text-align: center;
  }

  .words-app .nav-item > .tz-icon {
    display: none;
  }

  .words-app .nav-item > span:not(.tz-icon) {
    font-size: 13px;
  }

  .words-app .nav-item > small {
    display: none;
  }

  .words-app .view-heading {
    min-height: 0;
    align-items: flex-start;
    flex-direction: column;
    margin-bottom: 22px;
  }

  .words-app .view-heading .view-state {
    order: initial;
  }

  .words-app .library-browser-head,
  .words-app .review-queue-head {
    align-items: stretch;
    flex-direction: column;
  }

  .words-app .search-shell {
    width: 100%;
  }

  .words-app .vocab-item {
    grid-template-columns: minmax(110px, .8fr) auto minmax(0, 1.2fr) auto;
    gap: 6px 10px;
  }

  .words-app .vi-phon {
    display: none;
  }

  .words-app .vi-meaning {
    font-size: 12px;
  }

  .words-app .stats-grid {
    grid-template-columns: 1fr 1fr;
  }

  .words-app .stat-card,
  .words-app .stat-card:last-child {
    border-right: 0;
    border-bottom: 1px solid var(--words-line);
  }

  .words-app .stat-card:nth-child(odd) {
    border-right: 1px solid var(--words-line);
  }

  .words-app .stat-card:nth-last-child(-n + 2) {
    border-bottom: 0;
  }

  .words-app .quiz-options,
  .words-app .quiz-opts {
    grid-template-columns: 1fr;
  }

  .words-app .wrong-item {
    grid-template-columns: minmax(100px, .7fr) minmax(0, 1.3fr) auto;
  }

  .words-app .wi-count {
    display: none;
  }

  .words-app .preset-chips,
  .words-app .config-form-grid,
  .words-app .ai-mode-picker,
  .words-app .add-word-meta-grid,
  .words-app .schema-fields {
    grid-template-columns: 1fr;
  }

  .words-app .config-form-grid .config-field--wide {
    grid-column: 1;
  }

  .words-app .modal {
    padding: max(8px, env(safe-area-inset-top)) 8px max(8px, env(safe-area-inset-bottom));
  }

  .words-app .modal-card {
    max-height: calc(100dvh - max(16px, env(safe-area-inset-top) + env(safe-area-inset-bottom)));
  }
}

@media (max-width: 480px) {
  .words-app .app-icon {
    display: none;
  }

  .words-app .library-telemetry {
    grid-template-columns: 1fr;
  }

  .words-app .telemetry-head {
    grid-column: 1;
  }

  .words-app .vs-item,
  .words-app .vs-item:nth-child(odd),
  .words-app .vs-item:nth-last-child(-n + 2) {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: baseline;
    gap: 4px 12px;
    padding-inline: 4px;
    border-right: 0;
    border-bottom: 1px solid var(--words-line);
  }

  .words-app .vs-item > b {
    grid-column: 2;
    grid-row: 1 / span 2;
    margin: 0;
  }

  .words-app .action-cluster,
  .words-app .quiz-actions,
  .words-app .modal-foot {
    display: grid;
    grid-template-columns: 1fr;
  }

  .words-app .action-cluster .btn,
  .words-app .quiz-actions .btn,
  .words-app .modal-foot .btn {
    width: 100%;
  }

  .words-app .add-word-actions #addWordCancel {
    margin-right: 0;
    order: 3;
  }

  .words-app .library-maintenance > span {
    flex-basis: 100%;
  }

  .words-app .vocab-item {
    grid-template-columns: minmax(0, 1fr) auto;
    padding-block: 14px;
  }

  .words-app .vi-pos {
    justify-self: end;
  }

  .words-app .vi-meaning {
    grid-column: 1 / -1;
  }

  .words-app .vi-actions {
    grid-column: 1 / -1;
  }

  .words-app .stats-grid {
    grid-template-columns: 1fr;
  }

  .words-app .stat-card {
    min-height: 0;
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: baseline;
    border-right: 0;
    border-bottom: 1px solid var(--words-line);
  }

  .words-app .stat-card:nth-child(odd) {
    border-right: 0;
  }

  .words-app .stat-card:nth-last-child(-n + 2) {
    border-bottom: 1px solid var(--words-line);
  }

  .words-app .stat-card:last-child {
    border-bottom: 0;
  }

  .words-app .stat-card > b {
    grid-column: 2;
    grid-row: 1 / span 2;
    margin: 0;
  }

  .words-app .stage-indicator {
    justify-content: flex-start;
    overflow-x: auto;
  }

  .words-app .si-step > span:not(.si-number) {
    display: none;
  }

  .words-app .wrong-item {
    grid-template-columns: 1fr auto;
  }

  .words-app .wi-meaning {
    grid-column: 1 / -1;
  }

  .words-app .wi-actions {
    grid-column: 2;
    grid-row: 1;
  }
}

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

@media (forced-colors: active) {
  .words-app :is(button, input, textarea, select, .card, .modal-card) {
    border: 1px solid CanvasText;
  }
}