@keyframes sheet-in {
  from { opacity: 0; transform: translateY(9px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes line-in {
  from { opacity: 0; transform: translateY(7px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes popover-in {
  from { opacity: 0; transform: translateY(-4px) scale(.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.word-root { margin-top: 5px; color: var(--muted); font-size: 11px; line-height: 1.45; }
.word-root::before { content: "词根 · "; color: var(--warm); font-weight: 700; }
.batch-chip.is-active { box-shadow: 0 5px 12px rgba(51, 95, 109, .08); }
.reading-sheet { animation: sheet-in .42s cubic-bezier(.2, .7, .2, 1) both; }
.story-unit { padding: 18px 0 20px; border-top: 1px solid rgba(39, 43, 39, .09); animation: line-in .42s cubic-bezier(.2, .7, .2, 1) both; animation-delay: calc(var(--line-index) * 36ms); }
.story-line { margin: 0; }
.story-translation { max-width: 660px; margin: 8px 0 0; color: var(--muted); font-size: 14px; line-height: 1.65; }
.story-translation::before { content: "中文 · "; color: var(--warm); font-size: 11px; font-weight: 700; letter-spacing: .05em; }
.story-root { max-width: 680px; margin: 8px 0 0; color: #798078; font-size: 12px; line-height: 1.55; }
.story-root span { margin-right: 8px; color: var(--accent); font-size: 11px; font-weight: 700; }
.word-token { transition: color .16s ease, border .16s ease; }
.word-token:hover { border-bottom-color: var(--accent); }
.speaker { transition: transform .18s ease, color .18s ease, border .18s ease, background .18s ease; }
.speaker:hover { transform: scale(1.06); }
.story-footer { margin-top: 20px; }
.word-popover { animation: popover-in .2s ease-out both; }
.word-popover p { line-height: 1.55; }
.popover-label { margin-top: 14px !important; color: var(--accent) !important; font-size: 11px !important; font-weight: 700; }
.review-card { animation: sheet-in .32s cubic-bezier(.2, .7, .2, 1) both; }
.word-sense-summary { margin-top: 5px; color: var(--muted); font-size: 11px; line-height: 1.45; }
.word-sense-summary span { margin-right: 7px; color: var(--warm); font-weight: 700; }
.story-actions { display: grid; justify-items: start; gap: 7px; margin-top: 10px; }
.sentence-form-note { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.55; }
.translation-action-row { display: block; }
.meaning-trigger, .translation-toggle { min-height: 30px; padding: 0 10px; border: 1px solid var(--line); border-radius: 99px; color: var(--accent); background: rgba(255,255,255,.5); font-size: 12px; font-weight: 650; transition: background .16s ease, border .16s ease, transform .16s ease; }
.meaning-trigger:hover, .translation-toggle:hover { border-color: rgba(51,95,109,.4); background: rgba(51,95,109,.09); transform: translateY(-1px); }
.story-translation { display: none; margin-top: 11px; padding: 10px 13px; border-left: 2px solid rgba(147,111,73,.45); border-radius: 0 8px 8px 0; background: rgba(147,111,73,.055); }
.story-translation.is-visible { display: block; animation: line-in .2s ease-out both; }
.story-translation::before { content: "中文意思 · "; }
.learn-workspace { display: grid; grid-template-columns: 210px minmax(0, 1fr); align-items: start; gap: 22px; }
.learning-sidebar { position: sticky; top: 100px; padding: 17px 13px; border: 1px solid var(--line); border-radius: 17px; background: rgba(255,255,255,.36); }
.learning-sidebar .section-label { margin-bottom: 7px; }
.learning-summary { margin: 0 0 13px; color: var(--muted); font-size: 12px; }.learning-summary strong { color: var(--ink); }
.learning-word-list { display: grid; max-height: min(48vh, 440px); gap: 4px; overflow: auto; padding-right: 2px; }
.learning-word-nav { display: flex; align-items: center; justify-content: space-between; gap: 8px; width: 100%; min-height: 33px; padding: 5px 7px; border: 0; border-radius: 8px; color: var(--ink); background: transparent; text-align: left; }.learning-word-nav:hover { background: rgba(51,95,109,.08); }.learning-word-nav strong { font-family: Georgia, serif; font-size: 14px; font-weight: 400; }.learning-word-nav span { color: var(--warm); font-size: 10px; white-space: nowrap; }.learning-word-nav.is-seen span { color: var(--good); }.learning-word-nav.is-seen::before { content: "✓"; color: var(--good); font-size: 11px; }
.learn-pagination { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-top: 16px; color: var(--muted); font-size: 11px; }.learn-pagination .secondary { min-height: 34px; padding: 0 10px; font-size: 12px; }.learn-pagination button:disabled { cursor: not-allowed; opacity: .38; }
.review-card-nav { display: flex; justify-content: space-between; min-height: 35px; margin: -12px 0 18px; }.review-card-nav .quiet-button:disabled { cursor: not-allowed; opacity: .35; }
.choice.is-correct { border: 2px solid #27824b; color: #195c33; background: #dff5e5; box-shadow: inset 0 0 0 1px rgba(255,255,255,.7); }.choice.is-correct .key { color: #195c33; border-color: #27824b; background: #fff; }.choice.is-correct::after { content: "正确"; margin-left: auto; color: #195c33; font-size: 12px; font-weight: 800; }
.choice.is-wrong { border: 2px solid #c7433c; color: #962a25; background: #ffe4e1; box-shadow: inset 0 0 0 1px rgba(255,255,255,.7); }.choice.is-wrong .key { color: #962a25; border-color: #c7433c; background: #fff; }.choice.is-wrong::after { content: "错误"; margin-left: auto; color: #962a25; font-size: 12px; font-weight: 800; }
.review-answer.answer-correct { border-color: rgba(39,130,75,.38); }.review-answer.answer-wrong { border-color: rgba(199,67,60,.4); }.answer-correct strong { color: #195c33; }.answer-wrong strong { color: #962a25; }
.popover-current-sense { color: var(--ink) !important; font-size: 16px !important; font-weight: 700; }.sense-list { display: grid; gap: 5px; margin: 8px 0 0; padding-left: 18px; color: var(--muted); font-size: 13px; line-height: 1.45; }
.learning-page .page-heading { margin-bottom: 18px; }.learning-page .page-heading h1 { font-size: clamp(30px, 4.4vw, 42px); }.learning-page .page-heading p { max-width: 630px; font-size: 13px; line-height: 1.55; }
.popover-current-sense span { display: inline-block; margin-right: 8px; color: var(--warm); font-size: 12px; font-weight: 750; }
.choice { position: relative; flex-wrap: wrap; }.choice-label { min-width: 0; }.choice-translation { flex-basis: calc(100% - 31px); margin: -2px 0 0 31px; color: inherit; font-size: 12px; font-weight: 650; }
.choice.is-correct { border: 2px solid #075bb5; color: #073c78; background: #dcecff; }.choice.is-correct .key { color: #073c78; border-color: #075bb5; }.choice.is-correct::after { color: #073c78; }
.choice.is-wrong { border: 2px solid #b42318; color: #781a14; background: #ffe2df; }.choice.is-wrong .key { color: #781a14; border-color: #b42318; }.choice.is-wrong::after { color: #781a14; }
.word-token { border-bottom: 2px solid #0b5cab; background: linear-gradient(180deg, transparent 66%, rgba(11,92,171,.13) 66%); }.word-token:hover { color: #073c78; border-bottom-color: #073c78; }
.word-popover { max-height: calc(100dvh - 32px); overflow-y: auto; }.sense-list li { display: flex; gap: 8px; align-items: baseline; }.sense-list li span { flex: 0 0 auto; color: var(--warm); font-size: 11px; font-weight: 750; }
.choices .choice { display: block; min-height: 0; padding: 0; overflow: hidden; border-width: 1px; border-radius: 22px; background: rgba(255,255,255,.55); }.choice-select { display: flex; align-items: center; gap: 10px; width: 100%; min-height: 58px; padding: 12px 17px; border: 0; color: inherit; background: transparent; font: inherit; font-weight: 650; text-align: left; }.choice-select:not(:disabled):hover { background: rgba(51,95,109,.07); }.choice-select:disabled { cursor: default; }.choice .key { flex: 0 0 auto; }.choice-label { flex: 1; }.choice-result { margin-left: auto; font-size: 12px; font-weight: 800; }.choice-detail { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 0 15px 13px 49px; font-size: 14px; line-height: 1.5; }.choice-pos { margin-right: 8px; font-size: 12px; font-weight: 800; }.choice-meaning { font-weight: 650; }.choice-speaker { flex: 0 0 auto; width: 29px; height: 29px; color: currentColor; border-color: currentColor; background: rgba(255,255,255,.6); }.choice.is-correct { border: 2px solid #075bb5; color: #073c78; background: #dcecff; }.choice.is-correct::after, .choice.is-wrong::after { content: none; }.choice.is-correct .choice-detail { border-top: 1px solid rgba(7,91,181,.28); }.choice.is-wrong { border: 2px solid #b42318; color: #781a14; background: #ffe2df; }.choice.is-wrong .choice-detail { border-top: 1px solid rgba(180,35,24,.3); }

@media (max-width: 760px) {
  .learn-workspace { grid-template-columns: 1fr; }
  .learning-sidebar { position: static; }
  .learning-word-list { grid-template-columns: repeat(2, minmax(0, 1fr)); max-height: none; }
  .learning-word-nav { border: 1px solid rgba(39,43,39,.08); }
}

[data-reduce-motion="true"] *,
[data-reduce-motion="true"] *::before,
[data-reduce-motion="true"] *::after {
  transition-duration: .01ms !important;
  animation-duration: .01ms !important;
  animation-delay: 0ms !important;
}

/* Word list: independent, compact sections instead of one long table. */
.word-library { margin-top: 34px; padding-top: 24px; border-top: 1px solid var(--line); }
.word-library-heading { display: flex; align-items: end; justify-content: space-between; gap: 18px; margin-bottom: 16px; }
.word-library-heading .section-label { margin-bottom: 6px; }
.word-library-heading h2 { margin: 0; font-family: Georgia, serif; font-size: 27px; font-weight: 400; }
.word-library-heading h2 span, .word-library-heading > p { color: var(--muted); font-family: inherit; font-size: 13px; font-weight: 500; }
.word-library-heading > p { margin: 0 0 3px; }
.word-library-search { display: block; width: min(240px, 100%); margin: 0 0 2px auto; }
.word-library-search input { width: 100%; min-height: 38px; padding: 8px 12px; border: 1px solid var(--line); border-radius: 10px; color: var(--ink); background: rgba(255,255,255,.36); font: inherit; font-size: 13px; }
.word-library-search input::placeholder { color: var(--muted); opacity: .8; }
.saved-search { margin-top: 12px; }
.word-library-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.word-library-card { min-height: 162px; padding: 17px; border: 1px solid var(--line); border-radius: 16px; background: rgba(255,255,255,.34); }
.word-library-top { display: flex; align-items: start; justify-content: space-between; gap: 14px; }
.word-library-top h3 { margin: 0; font-family: Georgia, serif; font-size: 22px; font-weight: 400; }
.word-library-top p { margin: 3px 0 0; color: var(--muted); font-size: 13px; }
.word-library-top .speaker { width: 30px; height: 30px; }
.word-definition-list { display: grid; gap: 6px; margin: 14px 0 15px; padding: 0; list-style: none; color: var(--ink); font-size: 14px; line-height: 1.5; }
.word-definition-list li { display: flex; align-items: baseline; gap: 8px; }
.word-definition-list span { flex: 0 0 auto; min-width: 31px; color: var(--warm); font-size: 12px; font-weight: 750; }
.word-library-foot { display: flex; align-items: center; justify-content: space-between; gap: 9px; margin-top: auto; }
.mistake-count { color: #a22d23; font-size: 13px; font-weight: 750; }
.region-pager { display: flex; align-items: center; justify-content: center; gap: 12px; margin-top: 17px; color: var(--muted); font-size: 13px; }
.region-pager .quiet-button { min-height: 34px; border: 1px solid var(--line); background: rgba(255,255,255,.3); }
.region-pager .quiet-button:disabled { cursor: not-allowed; opacity: .38; }
.compact-empty { padding: 32px 16px; }
.saved-library { margin-top: 25px; }
.word-library-toggle { display: flex; align-items: center; justify-content: space-between; width: 100%; padding: 0; border: 0; color: var(--ink); background: transparent; text-align: left; }
.word-library-toggle .section-label { display: block; margin: 0 0 6px; }
.word-library-toggle strong { font-family: Georgia, serif; font-size: 24px; font-weight: 400; }
.word-library-toggle strong i { color: var(--muted); font-family: inherit; font-size: 13px; font-style: normal; font-weight: 500; }
.word-library-toggle > span:last-child { color: var(--accent); font-size: 13px; font-weight: 750; }
.saved-library .word-library-grid { margin-top: 17px; }

/* One search field follows the import area and prioritizes the mistake library. */
.import-panel > div:first-child { grid-column: 1 / -1; max-width: 720px; }
.library-search { display: grid; grid-template-columns: auto minmax(0, 360px); align-items: center; gap: 12px; width: min(100%, 520px); margin: 28px 0 0; }
.library-search > span { color: var(--muted); font-size: 13px; font-weight: 700; }
.library-search input { min-height: 42px; }
.library-search-result { grid-column: 2; margin: -5px 0 0; color: var(--accent); font-size: 12px; font-weight: 700; }

/* Make the spaced-review plan and dated activity visible on the home page. */
.home-insights { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr); gap: 22px; margin-top: 34px; }
.home-insight { padding: 24px; border: 1px solid var(--line); border-radius: 18px; background: rgba(255,255,255,.28); }
.insight-heading { display: flex; align-items: end; justify-content: space-between; gap: 12px; margin-bottom: 19px; }
.insight-heading .section-label { margin-bottom: 6px; }
.insight-heading h2 { margin: 0; font-family: Georgia, serif; font-size: 24px; font-weight: 400; }
.insight-heading > span { color: var(--muted); font-size: 12px; }
.curve-days { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 7px; margin: 0; padding: 0; list-style: none; }
.curve-days li { display: grid; justify-items: center; gap: 4px; min-height: 104px; padding: 11px 4px; border: 1px solid var(--line); border-radius: 12px; background: rgba(255,255,255,.32); text-align: center; }
.curve-days li.is-today { border-color: rgba(51,95,109,.45); background: rgba(51,95,109,.10); }
.curve-days time { color: var(--muted); font-size: 11px; }
.curve-days strong { align-self: end; color: var(--accent); font-family: Georgia, serif; font-size: 28px; font-weight: 400; line-height: 1; }
.curve-days small { color: var(--muted); font-size: 10px; }
.activity-days { display: grid; gap: 0; margin: 0; padding: 0; list-style: none; }
.activity-days li { display: flex; align-items: center; justify-content: space-between; gap: 14px; min-height: 47px; padding: 8px 0; border-bottom: 1px solid var(--line); }
.activity-days li:first-child { border-top: 1px solid var(--line); }
.activity-days li.is-today { color: var(--accent); }
.activity-days time { display: flex; align-items: baseline; gap: 8px; }
.activity-days time b { font-size: 13px; }
.activity-days time span { color: var(--muted); font-size: 11px; }
.activity-days p { display: flex; gap: 12px; margin: 0; }
.activity-days p strong { color: var(--muted); font-size: 12px; font-weight: 650; }
.activity-days li.is-today p strong { color: var(--accent); }

/* Full history is navigated month by month, while every recorded day stays visible. */
.home-insights { grid-template-columns: 1fr; }
.calendar-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 0 0 13px; }
.calendar-toolbar strong { font-family: Georgia, serif; font-size: 19px; font-weight: 400; }
.calendar-toolbar .quiet-button { min-height: 33px; padding: 0 9px; }
.calendar-weekdays, .study-calendar { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 5px; margin: 0; padding: 0; list-style: none; }
.calendar-weekdays { margin-bottom: 5px; }
.calendar-weekdays li { color: var(--muted); font-size: 11px; text-align: center; }
.study-calendar li { display: grid; align-content: start; min-height: 66px; padding: 7px; border: 1px solid transparent; border-radius: 10px; }
.study-calendar li.has-record { border-color: var(--line); background: rgba(51,95,109,.07); }
.study-calendar li.is-today { border-color: rgba(51,95,109,.52); background: rgba(51,95,109,.13); }
.study-calendar li.is-empty { visibility: hidden; }
.study-calendar time { margin-bottom: 5px; color: var(--muted); font-size: 11px; }
.study-calendar li.is-today time { color: var(--accent); font-weight: 750; }
.study-calendar li > span { color: var(--muted); font-size: 10px; line-height: 1.45; }
.study-calendar li.has-record > span:first-of-type { color: var(--accent); }

/* Mastered words leave the everyday list, with a deliberate local delete action. */
.mastered-library { margin-top: 25px; }
.mastered-word-grid { margin-top: 17px; }
.mastered-word-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 9px; }
.mastered-word-delete { min-height: 38px; padding: 0 12px; border: 1px solid rgba(161,66,56,.35); border-radius: 10px; color: #a14238; background: transparent; font-size: 12px; font-weight: 700; }
.mastered-word-delete:hover { color: #fff; border-color: #a14238; background: #a14238; }

/* The scheduler stays visible while answering instead of living only in the background. */
.review-memory-panel { margin: -7px 0 23px; padding: 14px 16px; border: 1px solid rgba(51,95,109,.22); border-radius: 14px; background: rgba(51,95,109,.055); }
.review-memory-heading { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.review-memory-heading span { color: var(--accent); font-size: 12px; font-weight: 750; letter-spacing: .06em; }
.review-memory-heading b { color: var(--muted); font-size: 12px; font-weight: 650; }
.review-memory-panel dl { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 12px 0 0; }
.review-memory-panel dl div { display: grid; gap: 4px; }
.review-memory-panel dt { color: var(--muted); font-size: 11px; }
.review-memory-panel dd { margin: 0; color: var(--ink); font-family: Georgia, serif; font-size: 17px; }
.memory-outcome { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin: 14px 0 16px; padding: 13px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.memory-outcome span { display: grid; gap: 4px; color: var(--muted); font-size: 11px; }
.memory-outcome b { color: var(--ink); font-family: Georgia, serif; font-size: 16px; font-weight: 400; }

/* Slightly stronger supporting text for comfortable reading. */
.tiny, .word-meta { font-size: 13px; }
.learning-word-nav span, .learning-summary, .learn-pagination { font-size: 12px; }
.review-progress, .recall-prompt, .choice-result { font-size: 13px; }
.theme-switch { color: var(--accent) !important; font-weight: 750 !important; }

/* Persisted dark theme, with the same visual hierarchy rather than inverted colors. */
html[data-theme="dark"] { color-scheme: dark; --paper: #151917; --ink: #eef1eb; --muted: #b5bbb2; --line: rgba(226,235,226,.16); --accent: #91c3d0; --accent-deep: #c4e3e8; --warm: #dfb27d; --good: #8bc99a; --bad: #ffaaa1; --shadow: 0 20px 50px rgba(0,0,0,.28); }
html[data-theme="dark"] .page-wash { background: radial-gradient(circle,rgba(54,95,105,.38),rgba(21,25,23,0) 67%); }
html[data-theme="dark"] .topbar { border-color: rgba(255,255,255,.1); background: rgba(25,31,28,.83); box-shadow: 0 7px 30px rgba(0,0,0,.22); }
html[data-theme="dark"] .brand-mark { color: #171b19; background: #eef1eb; }
html[data-theme="dark"] .topbar .nav button:hover, html[data-theme="dark"] .topbar .nav button.is-active { background: rgba(145,195,208,.16); }
html[data-theme="dark"] .secondary, html[data-theme="dark"] .region-pager .quiet-button, html[data-theme="dark"] textarea, html[data-theme="dark"] input, html[data-theme="dark"] select { color: var(--ink); border-color: var(--line); background: rgba(34,42,38,.86); }
html[data-theme="dark"] .primary { color: #171b19; background: #eef1eb; box-shadow: 0 7px 16px rgba(0,0,0,.25); }
html[data-theme="dark"] .primary:hover { background: #d6ddd5; }
html[data-theme="dark"] .reading-sheet, html[data-theme="dark"] .review-card, html[data-theme="dark"] .word-library-card, html[data-theme="dark"] .learning-sidebar, html[data-theme="dark"] .word-table { background: rgba(28,35,31,.82); }
html[data-theme="dark"] .home-insight, html[data-theme="dark"] .curve-days li { background: rgba(28,35,31,.82); }
html[data-theme="dark"] .review-memory-panel { border-color: #515158; background: #303034; }
html[data-theme="dark"] .study-calendar li.has-record { background: #303034; border-color: #515158; }
html[data-theme="dark"] .study-calendar li.is-today { background: #353b4c; border-color: #8299ca; }
html[data-theme="dark"] .mastered-word-delete { color: #ff9d97; border-color: rgba(255,157,151,.55); }
html[data-theme="dark"] .mastered-word-delete:hover { color: #fff; border-color: #ff9d97; background: #a64b45; }
html[data-theme="dark"] .scene-cn { color: var(--ink); }
html[data-theme="dark"] .import-aside, html[data-theme="dark"] .info-panel { background: rgba(45,70,73,.48); }
html[data-theme="dark"] .word-popover { background: #202723; border-color: rgba(145,195,208,.3); }
html[data-theme="dark"] .meaning-trigger, html[data-theme="dark"] .translation-toggle, html[data-theme="dark"] .speaker, html[data-theme="dark"] .batch-chip { background: rgba(34,42,38,.84); }
html[data-theme="dark"] .choice { background: rgba(34,42,38,.86); }
html[data-theme="dark"] .choice.is-correct { color: #cfe7ff; background: #123c68; border-color: #70b4ff; }
html[data-theme="dark"] .choice.is-wrong { color: #ffe0dc; background: #662520; border-color: #ff8277; }
html[data-theme="dark"] .choice.is-correct .key, html[data-theme="dark"] .choice.is-wrong .key { color: inherit; background: rgba(18,22,20,.35); border-color: currentColor; }
html[data-theme="dark"] .mistake-count { color: #ffaaa1; }

@media (max-width: 700px) {
  .word-library-search { width: 100%; margin-left: 0; }
  .library-search { grid-template-columns: 1fr; gap: 7px; }
  .library-search-result { grid-column: 1; margin: 0; }
  .home-insights { grid-template-columns: 1fr; }
  .curve-days { gap: 4px; }
  .curve-days li { min-height: 84px; padding: 8px 2px; }
  .curve-days strong { font-size: 22px; }
  .study-calendar { gap: 3px; }
  .study-calendar li { min-height: 53px; padding: 5px; }
  .study-calendar li > span { font-size: 9px; }
  .mastered-word-row { grid-template-columns: 1fr; gap: 5px; }
  .mastered-word-delete { justify-self: end; }
  .review-memory-panel dl, .memory-outcome { grid-template-columns: 1fr; gap: 9px; }
  .memory-outcome { padding: 11px 0; }
  .nav button[data-nav="home"], .nav button[data-nav="settings"] { display: none; }
  .word-library-grid { grid-template-columns: 1fr; }
  .word-library-heading { align-items: start; flex-direction: column; gap: 5px; }
}

/* Keep the word list quiet: one spoken word per line. */
.word-library-grid { grid-template-columns: 1fr; gap: 8px; }
.word-library-item { display: flex; align-items: center; justify-content: space-between; width: 100%; min-height: 50px; padding: 0 17px; border: 1px solid var(--line); border-radius: 13px; color: var(--ink); background: rgba(255,255,255,.28); text-align: left; transition: border .16s ease, background .16s ease, transform .16s ease; }
.word-library-item:hover { border-color: rgba(51,95,109,.48); background: rgba(51,95,109,.08); transform: translateX(2px); }
.word-library-item > span { font-family: Georgia, serif; font-size: 20px; }
.word-library-item small { color: var(--bad); font-size: 13px; font-weight: 750; }
.notebook-strip { display: flex; align-items: center; gap: 10px; margin: -12px 0 22px; color: var(--muted); font-size: 13px; }
.notebook-strip strong { color: var(--ink); font-family: Georgia, serif; font-size: 18px; font-weight: 400; }
.notebook-strip .quiet-button { margin-left: auto; }
.daily-progress-line { margin: -14px 0 22px; color: var(--muted); font-size: 13px; }
.daily-progress-line strong { color: var(--accent); }
.daily-quote { display: grid; gap: 4px; max-width: 620px !important; margin-top: 11px !important; }
.daily-quote span { color: var(--accent); font-family: Georgia, serif; font-size: 16px; font-style: italic; }
.daily-quote em { color: var(--muted); font-size: 13px; font-style: normal; }
.daily-home-quote { display: grid; gap: 7px; max-width: 650px; }
.daily-home-quote span { color: var(--accent); font-family: Georgia, serif; font-size: 20px; font-style: italic; }
.daily-home-quote em { color: var(--muted); font-size: 14px; font-style: normal; }
.notebook-create { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 9px; }
.notebook-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.danger-button { color: #a33c35; }
.archived-books { display: grid; gap: 7px; padding-top: 3px; }
.archived-books > div { display: flex; align-items: center; gap: 5px; padding: 8px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.archived-books > div span { margin-right: auto; }

/* Softer midnight palette for dark mode. */
html[data-theme="dark"] { --paper: #14171e; --ink: #eef1f6; --muted: #b7bfcc; --line: rgba(226,232,242,.15); --accent: #9fbfe6; --accent-deep: #c7dbf5; --warm: #d6b682; --good: #9ccbb5; --bad: #f5aaa3; --shadow: 0 20px 50px rgba(0,0,0,.28); }
html[data-theme="dark"] .page-wash { background: radial-gradient(circle,rgba(66,92,135,.30),rgba(20,23,30,0) 68%); }
html[data-theme="dark"] .topbar { background: rgba(27,32,43,.84); border-color: rgba(238,241,246,.1); }
html[data-theme="dark"] .secondary, html[data-theme="dark"] .region-pager .quiet-button, html[data-theme="dark"] textarea, html[data-theme="dark"] input, html[data-theme="dark"] select { background: rgba(35,42,55,.9); }
html[data-theme="dark"] .reading-sheet, html[data-theme="dark"] .review-card, html[data-theme="dark"] .learning-sidebar, html[data-theme="dark"] .word-table, html[data-theme="dark"] .word-library-item { background: rgba(28,34,45,.88); }
html[data-theme="dark"] .import-aside, html[data-theme="dark"] .info-panel { background: rgba(48,62,83,.56); }
html[data-theme="dark"] .word-popover { background: #222a37; }
html[data-theme="dark"] .meaning-trigger, html[data-theme="dark"] .translation-toggle, html[data-theme="dark"] .speaker, html[data-theme="dark"] .batch-chip { background: rgba(35,42,55,.9); }
html[data-theme="dark"] .choice { background: rgba(30,37,48,.92); }
html[data-theme="dark"] .choice.is-correct { color: #d9eaff; background: #1b3b60; border-color: #91bee9; }
html[data-theme="dark"] .choice.is-wrong { color: #ffe0dd; background: #542f36; border-color: #ed9b95; }
html[data-theme="dark"] .word-library-item:hover { background: rgba(159,191,230,.13); border-color: rgba(159,191,230,.5); }
html[data-theme="dark"] .danger-button { color: #f5aaa3; }

@media (max-width: 700px) {
  .notebook-create { grid-template-columns: 1fr; }
  .notebook-strip { flex-wrap: wrap; }
}

/* Chrome dark-theme inspired neutral surfaces. */
html[data-theme="dark"] { --paper: #202124; --ink: #e8eaed; --muted: #bdc1c6; --line: #3c4043; --accent: #8ab4f8; --accent-deep: #aecbfa; --warm: #fdd663; --good: #81c995; --bad: #f28b82; --shadow: 0 14px 34px rgba(0,0,0,.24); }
html[data-theme="dark"] .page-wash { display: none; }
html[data-theme="dark"] .topbar { border-color: #3c4043; background: #292a2d; box-shadow: 0 4px 16px rgba(0,0,0,.16); }
html[data-theme="dark"] .brand-mark { color: #202124; background: #e8eaed; }
html[data-theme="dark"] .topbar .nav button:hover, html[data-theme="dark"] .topbar .nav button.is-active { background: #3c4043; }
html[data-theme="dark"] .secondary, html[data-theme="dark"] .region-pager .quiet-button, html[data-theme="dark"] textarea, html[data-theme="dark"] input, html[data-theme="dark"] select { color: #e8eaed; border-color: #5f6368; background: #303134; }
html[data-theme="dark"] .primary { color: #202124; background: #8ab4f8; box-shadow: none; }
html[data-theme="dark"] .primary:hover { background: #aecbfa; }
html[data-theme="dark"] .reading-sheet, html[data-theme="dark"] .review-card, html[data-theme="dark"] .learning-sidebar, html[data-theme="dark"] .word-table, html[data-theme="dark"] .word-library-item { background: #292a2d; }
html[data-theme="dark"] .import-aside, html[data-theme="dark"] .info-panel { background: #292a2d; }
html[data-theme="dark"] .word-popover { background: #303134; border-color: #5f6368; }
html[data-theme="dark"] .meaning-trigger, html[data-theme="dark"] .translation-toggle, html[data-theme="dark"] .speaker, html[data-theme="dark"] .batch-chip { background: #303134; }
html[data-theme="dark"] .choice { background: #292a2d; border-color: #5f6368; }
html[data-theme="dark"] .choice.is-correct { color: #e8f0fe; background: #174ea6; border-color: #8ab4f8; }
html[data-theme="dark"] .choice.is-wrong { color: #fce8e6; background: #7f1d1d; border-color: #f28b82; }
html[data-theme="dark"] .word-library-item:hover { background: #303134; border-color: #8ab4f8; }
html[data-theme="dark"] .word-library-item small, html[data-theme="dark"] .danger-button { color: #f28b82; }
.word-library-item { gap: 18px; }
.word-library-term { flex: 0 0 150px; }
.word-library-meaning { flex: 1; color: var(--muted); font-family: "Segoe UI Variable", "Microsoft YaHei UI", sans-serif; font-size: 14px; line-height: 1.45; }
.word-library-meaning b { margin-right: 8px; color: var(--warm); font-size: 12px; }
.import-panel label.secondary { display: inline-flex; align-items: center; justify-content: center; text-align: center; }
.wordbook-quick { margin: -10px 0 25px; border: 1px solid var(--line); border-radius: 14px; background: rgba(255,255,255,.22); }
.wordbook-quick-toggle { display: flex; align-items: center; justify-content: space-between; width: 100%; min-height: 48px; padding: 0 15px; border: 0; color: var(--muted); background: transparent; text-align: left; }
.wordbook-quick-toggle strong { color: var(--ink); font-family: Georgia, serif; font-size: 18px; font-weight: 400; }
.wordbook-quick-toggle > span:last-child { color: var(--accent); font-size: 13px; font-weight: 750; }
.wordbook-quick-content { display: grid; grid-template-columns: minmax(180px,.8fr) minmax(250px,1.2fr) auto; align-items: end; gap: 10px; padding: 13px 15px 15px; border-top: 1px solid var(--line); }
.wordbook-quick-content label { display: grid; gap: 6px; color: var(--muted); font-size: 12px; }
.wordbook-quick-content label select { min-height: 40px; }
.wordbook-quick-content > div { display: flex; gap: 8px; }
.wordbook-quick-content > div input { min-width: 0; }
.wordbook-quick-content .secondary { min-height: 40px; white-space: nowrap; }
html[data-theme="dark"] .wordbook-quick { background: #292a2d; border-color: #3c4043; }

/* Learning hierarchy and clear status colours. */
.learning-page .page-heading h1 { display: flex; align-items: baseline; gap: 13px; font-weight: 600; }
.learning-page .page-heading h1 i { color: var(--accent); font-family: "Segoe UI Variable", "Microsoft YaHei UI", sans-serif; font-size: .43em; font-style: normal; font-weight: 750; letter-spacing: .03em; }
.daily-quote { gap: 7px; }
.daily-quote span { font-size: 21px; line-height: 1.35; }
.daily-quote em { font-size: 16px; line-height: 1.55; }
.daily-progress-line { margin-top: -10px; font-size: 15px; }
.learning-sidebar .learning-summary { font-size: 15px; }
.learning-word-nav span { color: var(--muted); font-size: 12px; font-weight: 650; }
.learning-word-nav.is-seen span, .learning-word-nav.is-seen::before { color: var(--accent); }
.reading-kicker { color: var(--accent); letter-spacing: .08em; }
.word-popover .speaker { float: none; position: absolute; top: 17px; right: 17px; margin: 0; }
.word-popover h3 { padding-right: 42px; }
html[data-theme="dark"] .toast { color: #202124; background: #e8eaed; box-shadow: 0 8px 24px rgba(0,0,0,.32); }

/* Restrained semantic states inspired by Apple system colours. */
html[data-theme="dark"] { --warm: #c79a62; }
html[data-theme="dark"] .choice.is-correct { color: #f5f9ff; background: rgba(10,132,255,.22); border-color: #0a84ff; }
html[data-theme="dark"] .choice.is-wrong { color: #fff5f4; background: rgba(255,69,58,.19); border-color: #ff453a; }
html[data-theme="dark"] .choice.is-correct .choice-detail { border-top-color: rgba(10,132,255,.48); }
html[data-theme="dark"] .choice.is-wrong .choice-detail { border-top-color: rgba(255,69,58,.48); }
html[data-theme="dark"] .review-card .primary { color: #fff; background: #0a84ff; }
html[data-theme="dark"] .review-card .primary:hover { background: #409cff; }
html[data-theme="dark"] .review-answer.answer-wrong { border-top-color: rgba(255,69,58,.55); }
html[data-theme="dark"] .answer-wrong strong { color: #ff8a82; }

@media (max-width: 700px) {
  .word-library-item { align-items: flex-start; flex-wrap: wrap; gap: 4px 12px; padding: 12px 15px; }
  .word-library-term { flex-basis: 120px; }
  .word-library-meaning { flex-basis: calc(100% - 132px); }
  .word-library-item small { margin-left: 120px; }
  .wordbook-quick-content { grid-template-columns: 1fr; }
}

/* Calm graphite: neutral dark surfaces, deliberate contrast, no fluorescent blue. */
html[data-theme="dark"] { --paper: #1c1c1e; --ink: #f2f2f7; --muted: #acaeb7; --line: #45454a; --accent: #aab9d8; --accent-deep: #d7e1f5; --warm: #d0ccc4; --good: #83b695; --bad: #e1847e; --shadow: 0 14px 36px rgba(0,0,0,.26); }
html[data-theme="dark"] .page-wash { display: none; }
html[data-theme="dark"] .topbar { background: #242426; border-color: #3a3a3d; box-shadow: 0 5px 18px rgba(0,0,0,.18); }
html[data-theme="dark"] .brand-mark { color: #1c1c1e; background: #f2f2f7; }
html[data-theme="dark"] .topbar .nav button:hover, html[data-theme="dark"] .topbar .nav button.is-active { background: #353539; }
html[data-theme="dark"] .secondary, html[data-theme="dark"] .region-pager .quiet-button, html[data-theme="dark"] textarea, html[data-theme="dark"] input, html[data-theme="dark"] select { color: var(--ink); background: #303034; border-color: #515158; }
html[data-theme="dark"] .primary, html[data-theme="dark"] .review-card .primary { color: #fff; background: #7188ba; box-shadow: none; }
html[data-theme="dark"] .primary:hover, html[data-theme="dark"] .review-card .primary:hover { background: #8299ca; }
html[data-theme="dark"] .reading-sheet, html[data-theme="dark"] .review-card, html[data-theme="dark"] .learning-sidebar, html[data-theme="dark"] .word-table, html[data-theme="dark"] .word-library-item { background: #29292c; }
html[data-theme="dark"] .import-aside, html[data-theme="dark"] .info-panel { background: #27272a; }
html[data-theme="dark"] .word-popover, html[data-theme="dark"] .meaning-trigger, html[data-theme="dark"] .translation-toggle, html[data-theme="dark"] .speaker, html[data-theme="dark"] .batch-chip { background: #303034; border-color: #515158; }
html[data-theme="dark"] .choice { background: #29292c; border-color: #515158; }
html[data-theme="dark"] .choice.is-correct { color: #edf8f0; background: #2c4133; border-color: #83b695; }
html[data-theme="dark"] .choice.is-wrong { color: #fff2f1; background: #482d2e; border-color: #e1847e; }
html[data-theme="dark"] .choice.is-correct .choice-detail { border-top-color: rgba(131,182,149,.54); }
html[data-theme="dark"] .choice.is-wrong .choice-detail { border-top-color: rgba(225,132,126,.58); }
html[data-theme="dark"] .word-library-item:hover { background: #343438; border-color: #8d9dc0; }
html[data-theme="dark"] .word-library-item small, html[data-theme="dark"] .danger-button, html[data-theme="dark"] .answer-wrong strong { color: #e1847e; }
html[data-theme="dark"] .toast { color: #f2f2f7; background: #343438; border: 1px solid #56565d; box-shadow: 0 10px 28px rgba(0,0,0,.32); }

/* Restore a quiet Chinese learning heading and make the daily line editorial, not neon. */
.learning-page .page-heading h1 { display: block; font-weight: 400; }
.learning-page .page-heading h1 i { display: none; }
.daily-quote span { color: var(--accent); }
.daily-quote em { color: var(--muted); }
.reading-kicker { color: var(--muted); }

/* Settings: group information and leave enough breathing room around every field. */
.settings-grid > div { min-width: 0; }
.settings-grid .setting-group { scroll-margin-top: 118px; margin: 0 0 15px; padding: 25px 27px; border: 1px solid var(--line); border-radius: 18px; background: rgba(255,255,255,.24); }
.settings-grid .setting-group > h2 { margin-top: 0; }
.settings-grid .setting-group > p { margin-bottom: 19px; }
.setting-stack { gap: 16px; }
.setting-stack .field-label { display: grid; gap: 9px; align-items: stretch; line-height: 1.4; }
.setting-stack .field-label input, .setting-stack .field-label select { width: 100%; min-height: 48px; margin: 0; }
.ai-actions { display: flex; flex-wrap: wrap; gap: 9px; }
.settings-toc { display: grid; gap: 4px; margin: 0 0 22px; padding: 0 0 19px; border-bottom: 1px solid var(--line); }
.settings-toc p { margin: 0 0 5px; color: var(--muted); font-size: 12px; font-weight: 750; letter-spacing: .08em; }
.settings-toc a { padding: 7px 0; color: var(--ink); font-size: 14px; text-decoration: none; }
.settings-toc a:hover { color: var(--accent); }
html[data-theme="dark"] .settings-grid .setting-group { background: #27272a; border-color: #414146; }

@media (max-width: 700px) {
  .settings-grid .setting-group { padding: 21px 18px; }
  .ai-actions { display: grid; grid-template-columns: 1fr; }
}

/* A word row is still one word wide, but now carries every saved part of speech and meaning. */
.word-library-item { align-items: flex-start; }
.word-library-term { align-self: center; }
.word-library-definitions { display: grid; flex: 1; gap: 4px; padding: 11px 0; }
.word-library-meaning { display: block; color: var(--muted); font-family: "Segoe UI Variable", "Microsoft YaHei UI", sans-serif; font-size: 14px; line-height: 1.45; }
.word-library-meaning b { display: inline-block; min-width: 31px; margin-right: 8px; color: var(--warm); font-size: 12px; }
.word-library-item small { align-self: center; }
.ai-learning-context { display: flex; align-items: center; flex-wrap: wrap; gap: 9px; margin: -6px 0 24px; color: var(--muted); font-size: 12px; }
.ai-learning-context .quiet-button { min-height: 35px; }

/* Settings follows the learning-page pattern: a fixed directory at left, a moving reading pane at right. */
.settings-grid.settings-workspace { display: grid; grid-template-columns: minmax(210px, 255px) minmax(0, 1fr); align-items: start; gap: clamp(26px, 4vw, 58px); }
.settings-sidebar { position: sticky; top: 116px; align-self: start; max-height: calc(100vh - 142px); overflow: auto; padding: 19px 20px; border: 1px solid var(--line); border-radius: 18px; background: rgba(255,255,255,.24); scrollbar-gutter: stable; }
.settings-content { min-width: 0; }
.settings-sidebar .settings-local-info { margin: 0; padding: 17px 0 0; border: 0; border-top: 1px solid var(--line); border-radius: 0; background: transparent; box-shadow: none; }
.settings-sidebar .settings-local-info h3 { margin-top: 0; font-size: 17px; }
.settings-sidebar .settings-local-info p { font-size: 12px; line-height: 1.6; }
.settings-toc { gap: 3px; margin: 0 0 17px; padding: 0 0 16px; }
.settings-toc-link { display: block; width: 100%; padding: 8px 0; border: 0; color: var(--ink); background: transparent; font: inherit; font-size: 14px; text-align: left; cursor: pointer; }
.settings-toc-link:hover, .settings-toc-link:focus-visible { color: var(--accent); outline: none; }
html[data-theme="dark"] .settings-sidebar { background: #27272a; border-color: #414146; }

@media (max-width: 880px) {
  .settings-grid.settings-workspace { grid-template-columns: 1fr; }
  .settings-sidebar { position: static; max-height: none; }
}

@media (max-width: 700px) {
  .word-library-definitions { flex-basis: calc(100% - 132px); padding: 0; }
  .word-library-item small { margin-left: 120px; }
  .ai-learning-context { align-items: flex-start; flex-direction: column; }
}

/* Imported words without a verified example use a clear definition card, never a fabricated sentence. */
.learning-definition-card {
  padding: 20px 0 22px;
}
.learning-definition-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}
.learning-word-title {
  border: 0;
  color: var(--ink);
  background: transparent;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(27px, 4vw, 38px);
  line-height: 1.08;
  text-align: left;
}
.learning-definition-list,
.definition-group-list {
  display: grid;
  gap: 7px;
  margin-top: 12px;
}
.learning-definition-list .popover-current-sense,
.definition-group-list .popover-current-sense {
  margin: 0;
}
.learning-example-note {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}
.definition-recall {
  margin: 14px 0 24px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(28px, 5vw, 43px);
  line-height: 1.25;
}

/* iPhone and iPad: safe-area spacing and a thumb-friendly bottom navigation. */
html { -webkit-text-size-adjust: 100%; }
body { min-height: 100dvh; overscroll-behavior-y: none; }
.backup-actions { display: flex; flex-wrap: wrap; gap: 9px; }
.backup-actions label.secondary { display: inline-flex; align-items: center; justify-content: center; }

@media (max-width: 700px) {
  .topbar { top: max(8px, env(safe-area-inset-top)); width: calc(100% - 24px); height: 56px; margin-top: 8px; padding: 0 14px; border-radius: 16px; }
  .brand { font-size: 15px; }
  .brand-mark { width: 28px; height: 28px; border-radius: 9px; }
  .nav { position: fixed; z-index: 40; right: 12px; bottom: max(10px, env(safe-area-inset-bottom)); left: 12px; display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 2px; padding: 5px; border: 1px solid rgba(255,255,255,.72); border-radius: 17px; background: rgba(249,248,244,.92); box-shadow: 0 10px 30px rgba(30,33,31,.17); backdrop-filter: blur(18px); }
  .nav button { display: flex; align-items: center; justify-content: center; min-width: 0; min-height: 46px; padding: 5px 2px; border-radius: 12px; font-size: 11px; line-height: 1.1; white-space: nowrap; }
  .nav-count { min-width: 14px; height: 14px; padding: 0 3px; font-size: 9px; }
  .app-shell { width: calc(100% - 24px); padding: 43px 0 calc(88px + env(safe-area-inset-bottom)); }
  .page-heading { margin-bottom: 25px; }
  .page-heading h1 { font-size: clamp(34px, 11vw, 45px); }
  .display { font-size: clamp(38px, 12vw, 52px); }
  .lede { margin-top: 19px; font-size: 15px; line-height: 1.68; }
  .action-row { display: grid; grid-template-columns: 1fr; gap: 9px; margin-top: 26px; }
  .action-row .primary, .action-row .secondary { width: 100%; }
  .primary, .secondary, .quiet-button, .choice { min-height: 46px; }
  input, select { min-height: 46px; font-size: 16px; }
  textarea { min-height: 154px; font-size: 16px; }
  .reading-sheet, .review-card { padding: 24px 18px; border-radius: 19px; }
  .story-line { padding-right: 42px; font-size: 21px; line-height: 1.58; }
  .word-popover { bottom: calc(78px + env(safe-area-inset-bottom)); top: auto !important; left: 12px !important; width: calc(100vw - 24px); max-height: min(48dvh, 340px); overflow: auto; }
  .toast { bottom: calc(78px + env(safe-area-inset-bottom)); }
  .learning-sidebar, .settings-sidebar { position: static; }
  .backup-actions { display: grid; grid-template-columns: 1fr; }
  .backup-actions .secondary { width: 100%; }
  html[data-theme="dark"] .nav { border-color: #3a3a3d; background: rgba(36,36,38,.94); }
}

@media (min-width: 701px) and (max-width: 1024px) {
  .topbar { width: calc(100% - 48px); }
  .app-shell { width: calc(100% - 64px); }
  .learn-workspace { grid-template-columns: 185px minmax(0, 1fr); gap: 18px; }
  .settings-grid.settings-workspace { grid-template-columns: 205px minmax(0, 1fr); gap: 28px; }
}

/* iPhone and iPad: a compact, thumb-friendly navigation and safe-area spacing. */
html { -webkit-text-size-adjust: 100%; }
body { min-height: 100dvh; overscroll-behavior-y: none; }

@media (max-width: 700px) {
  .topbar {
    top: max(8px, env(safe-area-inset-top));
    width: calc(100% - 24px);
    height: 56px;
    margin-top: 8px;
    padding: 0 14px;
    border-radius: 16px;
  }
  .brand { font-size: 15px; }
  .brand-mark { width: 28px; height: 28px; border-radius: 9px; }
  .nav {
    position: fixed;
    z-index: 40;
    right: 12px;
    bottom: max(10px, env(safe-area-inset-bottom));
    left: 12px;
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 2px;
    padding: 5px;
    border: 1px solid rgba(255,255,255,.72);
    border-radius: 17px;
    background: rgba(249,248,244,.92);
    box-shadow: 0 10px 30px rgba(30,33,31,.17);
    backdrop-filter: blur(18px);
  }
  .nav button {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 0;
    min-height: 46px;
    padding: 5px 2px;
    border-radius: 12px;
    font-size: 11px;
    line-height: 1.1;
    white-space: nowrap;
  }
  .nav-count { min-width: 14px; height: 14px; padding: 0 3px; font-size: 9px; }
  .app-shell { width: calc(100% - 24px); padding: 43px 0 calc(88px + env(safe-area-inset-bottom)); }
  .page-heading { margin-bottom: 25px; }
  .page-heading h1 { font-size: clamp(34px, 11vw, 45px); }
  .display { font-size: clamp(38px, 12vw, 52px); }
  .lede { margin-top: 19px; font-size: 15px; line-height: 1.68; }
  .action-row { display: grid; grid-template-columns: 1fr; gap: 9px; margin-top: 26px; }
  .action-row .primary, .action-row .secondary { width: 100%; }
  .primary, .secondary, .quiet-button, .choice { min-height: 46px; }
  .home-shelf { gap: 26px; margin-top: 53px; }
  .import-panel { gap: 22px; padding: 23px 0 28px; }
  textarea { min-height: 154px; font-size: 16px; }
  input, select { min-height: 46px; font-size: 16px; }
  .reading-sheet, .review-card { padding: 24px 18px; border-radius: 19px; }
  .story-title { margin-bottom: 22px; }
  .story-line { padding-right: 42px; font-size: 21px; line-height: 1.58; }
  .story-unit { padding: 15px 0 17px; }
  .story-translation { font-size: 14px; }
  .choices { gap: 9px; margin-top: 22px; }
  .choice { min-height: 54px; padding: 11px 13px; }
  .review-progress { margin-bottom: 24px; }
  .word-popover { bottom: calc(78px + env(safe-area-inset-bottom)); top: auto !important; left: 12px !important; width: calc(100vw - 24px); max-height: min(48dvh, 340px); overflow: auto; }
  .toast { bottom: calc(78px + env(safe-area-inset-bottom)); }
  .learning-sidebar, .settings-sidebar { position: static; }
  .learning-word-list { max-height: 260px; }
  html[data-theme="dark"] .nav { border-color: #3a3a3d; background: rgba(36,36,38,.94); }
}

@media (min-width: 701px) and (max-width: 1024px) {
  .topbar { width: calc(100% - 48px); }
  .app-shell { width: calc(100% - 64px); }
  .learn-workspace { grid-template-columns: 185px minmax(0, 1fr); gap: 18px; }
  .settings-grid.settings-workspace { grid-template-columns: 205px minmax(0, 1fr); gap: 28px; }
}

@media (max-width: 700px) and (orientation: landscape) and (max-height: 520px) {
  .topbar { position: relative; top: auto; }
  .app-shell { padding-top: 26px; }
  .nav { grid-template-columns: repeat(6, minmax(68px, 1fr)); overflow-x: auto; }
}

/* The dictionary card keeps grammar and meanings separate, even for a word with many senses. */
.word-popover { width: min(370px, calc(100vw - 28px)); padding: 20px; }
.word-popover .word-phonetic { margin: 5px 0 0; color: var(--muted); font-size: 13px; }
.definition-layout { display: grid; gap: 12px; margin-top: 17px; }
.definition-block { display: grid; gap: 7px; }
.definition-heading { margin: 0 !important; color: var(--muted) !important; font-size: 11px !important; font-weight: 750; letter-spacing: .08em; }
.part-of-speech-tags, .meaning-tags { display: flex; flex-wrap: wrap; gap: 7px; }
.part-of-speech-tags span { display: inline-flex; align-items: center; min-height: 25px; padding: 0 9px; border-radius: 999px; color: var(--warm); background: rgba(147,111,73,.12); font-size: 12px; font-weight: 750; }
.meaning-tags span { display: inline-flex; align-items: center; min-height: 29px; padding: 4px 10px; border: 1px solid rgba(51,95,109,.13); border-radius: 10px; color: var(--ink); background: rgba(51,95,109,.06); font-size: 14px; font-weight: 650; line-height: 1.35; }
.other-definition-list { display: grid; gap: 11px; margin-top: 10px; }
.other-definition-list > section { padding-top: 11px; border-top: 1px solid var(--line); }
.other-definition-list .definition-layout { margin-top: 0; gap: 9px; }
.other-definition-list .definition-heading { display: none; }
html[data-theme="dark"] .meaning-tags span { border-color: #4b5358; color: #f0f1ec; background: rgba(130,160,170,.13); }

/* Final iPhone layout: the header stays clear of the status bar and the full navigation lives at the bottom. */
@media (max-width: 700px) {
  .topbar {
    position: sticky !important;
    top: max(0px, env(safe-area-inset-top)) !important;
    width: calc(100% - 24px) !important;
    height: 54px !important;
    margin: 0 auto !important;
    padding: 0 13px !important;
    border-radius: 15px !important;
  }
  .topbar .brand { min-width: 0; font-size: 15px; }
  .topbar .nav {
    position: fixed !important;
    z-index: 90;
    right: 10px;
    bottom: calc(7px + env(safe-area-inset-bottom));
    left: 10px;
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 2px;
    padding: 5px;
    border: 1px solid rgba(255,255,255,.76);
    border-radius: 17px;
    background: rgba(249,248,244,.96);
    box-shadow: 0 10px 30px rgba(30,33,31,.18);
    backdrop-filter: blur(18px);
  }
  .topbar .nav button { min-width: 0; min-height: 43px; padding: 4px 1px; font-size: 10px; line-height: 1.12; white-space: normal; }
  .topbar .nav-count { min-width: 13px; height: 13px; padding: 0 2px; font-size: 8px; }
  .app-shell { width: calc(100% - 24px) !important; padding: 32px 0 calc(86px + env(safe-area-inset-bottom)) !important; }
  .word-popover { z-index: 85; right: 12px; bottom: calc(73px + env(safe-area-inset-bottom)); left: 12px !important; width: auto; max-height: min(52dvh, 400px); }
  .toast { z-index: 95; bottom: calc(75px + env(safe-area-inset-bottom)); }
  .meaning-tags span { min-height: 31px; font-size: 14px; }
}

/* A separate fixed phone navigation avoids the desktop header's stacking and keeps every destination available. */
.mobile-nav { display: none; }
.file-import-button { position: relative; display: inline-flex; align-items: center; justify-content: center; overflow: hidden; }
.file-import-input { position: absolute; inset: 0; width: 100%; min-height: 100%; padding: 0; border: 0; opacity: 0; cursor: pointer; }

@media (max-width: 700px) {
  .topbar .nav { display: none !important; }
  .mobile-nav {
    position: fixed;
    z-index: 200;
    right: 9px;
    bottom: calc(7px + env(safe-area-inset-bottom));
    left: 9px;
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 2px;
    padding: 5px;
    border: 1px solid rgba(255,255,255,.8);
    border-radius: 17px;
    background: rgba(249,248,244,.97);
    box-shadow: 0 10px 30px rgba(30,33,31,.2);
    backdrop-filter: blur(18px);
  }
  .mobile-nav button {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 0;
    min-height: 43px;
    padding: 4px 1px;
    border: 0;
    border-radius: 12px;
    color: var(--muted);
    background: transparent;
    font: inherit;
    font-size: 10px;
    font-weight: 650;
    line-height: 1.1;
    white-space: normal;
  }
  .mobile-nav button.is-active, .mobile-nav button:active { color: var(--ink); background: rgba(51,95,109,.12); }
  .mobile-nav .nav-count { min-width: 13px; height: 13px; padding: 0 2px; font-size: 8px; }
  html[data-theme="dark"] .mobile-nav { border-color: #3a3a3d; background: rgba(36,36,38,.97); }
}

/* Final phone rules: these deliberately override older compatibility styles.
   The word card stays next to the selected word, not at the bottom of iOS. */
.sentence-sense { margin-top: 15px; padding: 11px 12px; border-left: 3px solid rgba(51,95,109,.52); border-radius: 0 10px 10px 0; background: rgba(51,95,109,.07); }
.sentence-sense > small, .choice-detail small { display: block; margin: 0 0 5px; color: var(--accent); font-size: 11px; font-weight: 750; letter-spacing: .06em; }
.sentence-sense .popover-current-sense { margin: 0; color: var(--ink) !important; }
.definition-group-list { margin-top: 14px; }
.choice-other-meanings { display: grid; gap: 5px; margin-top: 10px; padding-top: 9px; border-top: 1px solid currentColor; opacity: .9; }
.choice-other-meanings span { display: block; font-size: 13px; font-weight: 600; }
.study-rule-list { display: grid; gap: 10px; margin: 18px 0 0; padding: 0; list-style: none; counter-reset: study-rule; }
.study-rule-list li { position: relative; min-height: 31px; padding: 5px 0 5px 38px; color: var(--ink); font-size: 14px; line-height: 1.6; }
.study-rule-list li::before { counter-increment: study-rule; content: counter(study-rule); position: absolute; top: 5px; left: 0; display: grid; width: 25px; height: 25px; place-items: center; border-radius: 50%; color: var(--accent); background: rgba(51,95,109,.10); font-size: 12px; font-weight: 750; }

@media (max-width: 700px) {
  .word-popover { position: absolute; z-index: 210; width: min(350px, calc(100vw - 24px)); max-height: min(56dvh, 430px); overflow-y: auto; }
  .mobile-nav { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .mobile-nav button { min-height: 44px; font-size: 10px; }
  .topbar { z-index: 80; }
}

/* Sentence data is streamed on mobile.  A short, explicit loading state is
   preferable to showing an older synthetic sentence or a definition-only quiz. */
.learning-loading-card, .review-loading { display: grid; align-content: center; gap: 12px; min-height: 230px; }
.learning-loading-card h3 { margin: 0; font-family: Georgia, serif; font-size: clamp(30px, 6vw, 42px); font-weight: 400; }
.learning-loading-card p, .review-loading p { max-width: 520px; margin: 0; color: var(--muted); line-height: 1.7; }
.learning-loading-card .quiet-button, .review-loading .secondary { justify-self: start; }
.review-card-nav { display: flex; align-items: center; justify-content: space-between; gap: 9px; margin: -12px 0 19px; }
.review-remaining { display: inline-flex; align-items: center; min-height: 30px; padding: 0 10px; border-radius: 999px; color: var(--accent-deep); background: rgba(51,95,109,.10); font-size: 12px; white-space: nowrap; }
.next-review-note { margin-bottom: 0 !important; }

@media (max-width: 700px) {
  .learning-loading-card, .review-loading { min-height: 210px; padding: 25px 18px; }
  .review-card-nav { margin: -4px 0 17px; }
  .review-card-nav .quiet-button { min-width: 0; padding: 0 5px; font-size: 12px; }
  .review-remaining { min-height: 29px; padding: 0 8px; font-size: 11px; }
}

/* Review feedback: quiet, compact cards that distinguish outcome without
   turning the whole screen into a red-or-green signal. */
.choices { align-items: start; gap: 12px; }
.choices .choice { align-self: start; overflow: hidden; border-width: 1px; border-radius: 16px; box-shadow: none; }
.choice-select { min-height: 62px; padding: 14px 16px; }
.choice-label { font-family: Georgia, "Noto Serif", serif; font-size: clamp(23px, 2.25vw, 31px); font-weight: 600; letter-spacing: -.018em; }
.choice-result { display: inline-flex; align-items: center; min-height: 26px; padding: 0 9px; border-radius: 999px; font-size: 11px; font-weight: 760; letter-spacing: .02em; }
.choice-detail { align-items: flex-start; padding: 1px 16px 15px 52px; }
.choice-detail > div { min-width: 0; }
.choice-detail small { margin-bottom: 6px; }
.choice-pos { color: inherit; }
.choice-meaning { font-size: 16px; font-weight: 650; }
.choice-other-meanings { border-top-color: rgba(48,52,49,.18); }
.choice-speaker { width: 31px; height: 31px; margin-top: 2px; }
.choices .choice.is-correct { color: #26382e; border-color: #a7c1af; background: #f0f6f1; }
.choices .choice.is-wrong { color: #482f30; border-color: #e4b3ad; background: #fbf2f1; }
.choice.is-correct .choice-result { color: #285a3c; background: rgba(89,143,106,.15); }
.choice.is-wrong .choice-result { color: #8b3e39; background: rgba(194,91,81,.13); }
.choice.is-correct .choice-detail { border-top-color: rgba(76,122,90,.24); }
.choice.is-wrong .choice-detail { border-top-color: rgba(164,76,69,.22); }
html[data-theme="dark"] .choices .choice { background: #303034; border-color: #515158; }
html[data-theme="dark"] .choices .choice.is-correct { color: #edf6ef; border-color: #6f957a; background: #28372e; }
html[data-theme="dark"] .choices .choice.is-wrong { color: #fff3f1; border-color: #bd817c; background: #402d2f; }
html[data-theme="dark"] .choice.is-correct .choice-result { color: #d9eddf; background: rgba(130,181,142,.2); }
html[data-theme="dark"] .choice.is-wrong .choice-result { color: #ffe0dc; background: rgba(223,126,116,.18); }
html[data-theme="dark"] .choice-other-meanings { border-top-color: rgba(255,255,255,.15); }

@media (max-width: 700px) {
  .choices { gap: 10px; }
  .choice-select { min-height: 58px; padding: 12px 14px; }
  .choice-label { font-size: 25px; }
  .choice-detail { padding: 1px 14px 13px 47px; }
  .choice-meaning { font-size: 15px; }
}

/* The daily plan remains visible without turning the home page into a dashboard. */
.daily-plan-overview { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin: 22px 0 0; padding: 19px 22px; border: 1px solid var(--line); border-radius: 17px; background: rgba(51,95,109,.055); }
.daily-plan-overview .section-label { margin-bottom: 5px; }
.daily-plan-overview h2 { margin: 0; color: var(--accent); font-family: Georgia, serif; font-size: 26px; font-weight: 400; }
.daily-plan-overview > p { display: grid; gap: 5px; max-width: 560px; margin: 0; color: var(--muted); font-size: 13px; line-height: 1.6; }
.daily-plan-overview small { color: var(--accent); font-size: 12px; }
.daily-plan-overview.is-gated, .daily-plan-setting-status.is-gated { border-color: rgba(147,111,73,.42); background: rgba(147,111,73,.08); }
.daily-plan-setting-status { margin: 0 0 17px; padding: 11px 13px; border: 1px solid rgba(51,95,109,.18); border-radius: 10px; color: var(--muted); font-size: 13px; line-height: 1.6; }
html[data-theme="dark"] .daily-plan-overview { background: #29292c; }
html[data-theme="dark"] .daily-plan-overview.is-gated, html[data-theme="dark"] .daily-plan-setting-status.is-gated { background: #38302a; border-color: #756456; }
@media (max-width: 700px) { .daily-plan-overview { display: grid; gap: 10px; padding: 17px; } }

.app-startup { margin: 2.5rem auto; max-width: 36rem; color: var(--muted, #697386); text-align: center; }

/* Home Screen web apps intentionally receive an isolated local store on iOS. */
.home-screen-recovery { max-width: 760px; }
.home-screen-recovery .display { max-width: 650px; }
.home-screen-recovery-card { display: grid; gap: 19px; margin-top: 34px; padding: 27px; border: 1px solid rgba(51,95,109,.22); border-radius: 20px; background: rgba(220,231,233,.42); box-shadow: var(--shadow); }
.home-screen-recovery-card h2 { margin: 0; font-family: Georgia, serif; font-size: 28px; font-weight: 400; }
.home-screen-recovery-card ol { display: grid; gap: 7px; margin: 13px 0 0; padding-left: 21px; color: var(--muted); line-height: 1.65; }
.home-screen-recovery-card .field-label { display: grid; gap: 8px; margin: 0; }
.home-screen-recovery-card .backup-actions { display: flex; flex-wrap: wrap; gap: 9px; }
.home-screen-recovery-error { margin: 0; color: var(--bad); font-size: 14px; line-height: 1.6; }
.startup-recovery .action-row { justify-content: center; }
.startup-recovery .action-row a.primary { display: inline-flex; align-items: center; justify-content: center; text-decoration: none; }
html[data-theme="dark"] .home-screen-recovery-card { border-color: #4b5960; background: #272c30; }
@media (max-width: 700px) { .home-screen-recovery-card { margin-top: 28px; padding: 21px 18px; } .home-screen-recovery-card .backup-actions { display: grid; } .home-screen-recovery-card .backup-actions > * { width: 100%; } }

/* Independent memory table: it inherits WordScape's paper, ink and muted warm accent. */
.memory-page { display: grid; gap: 22px; }
.memory-page .page-heading { margin-bottom: 3px; }
.memory-lead { display: flex; align-items: end; justify-content: space-between; gap: 28px; padding: 25px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.memory-lead h2, .memory-table-caption h2 { margin: 0; font-family: Georgia, "Noto Serif", serif; font-weight: 400; letter-spacing: -.03em; }
.memory-lead h2 { font-size: clamp(27px, 4vw, 38px); }
.memory-lead p:not(.section-label) { max-width: 610px; margin: 9px 0 0; color: var(--muted); font-size: 14px; line-height: 1.7; }
.memory-summary { display: grid; gap: 2px; min-width: 105px; padding: 2px 0 2px 22px; border-left: 1px solid var(--line); text-align: right; }
.memory-summary strong { font-family: Georgia, serif; font-size: 34px; font-weight: 400; line-height: 1; }
.memory-summary span { color: var(--muted); font-size: 12px; }
.memory-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.memory-modes { display: inline-flex; gap: 3px; padding: 3px; border: 1px solid var(--line); border-radius: 13px; background: rgba(255,255,255,.36); }
.memory-mode { min-height: 38px; padding: 0 15px; border: 0; border-radius: 10px; color: var(--muted); background: transparent; font-weight: 700; }
.memory-mode.is-active { color: #fff; background: var(--ink); box-shadow: 0 4px 11px rgba(32,33,31,.12); }
.memory-hide-all { margin-left: auto; }
.memory-search { display: flex; align-items: center; gap: 8px; min-width: min(270px, 100%); color: var(--muted); font-size: 12px; font-weight: 700; }
.memory-search input { min-height: 38px; padding: 0 11px; font-size: 13px; }
.memory-workspace { display: grid; grid-template-columns: 142px minmax(0, 1fr); gap: 25px; align-items: start; }
.memory-sidebar { position: sticky; top: 102px; padding-top: 14px; }
.memory-sidebar .section-label { margin-bottom: 9px; }
.memory-directory { display: grid; gap: 3px; }
.memory-directory-item { display: flex; align-items: center; justify-content: space-between; min-height: 34px; padding: 0 9px; border: 0; border-radius: 9px; color: var(--muted); background: transparent; font-size: 13px; text-align: left; }
.memory-directory-item b { min-width: 21px; color: inherit; font-size: 11px; text-align: right; }
.memory-directory-item:hover, .memory-directory-item.is-active { color: var(--ink); background: rgba(51,95,109,.09); }
.memory-directory-item.is-active { font-weight: 750; }
.memory-table-card { min-width: 0; overflow: hidden; border: 1px solid rgba(51,95,109,.14); border-radius: 20px; background: rgba(255,255,255,.44); box-shadow: 0 13px 34px rgba(53,54,47,.06); }
.memory-table-caption { display: flex; align-items: end; justify-content: space-between; gap: 20px; padding: 19px 21px 17px; border-bottom: 1px solid var(--line); }
.memory-table-caption .section-label { margin-bottom: 5px; }
.memory-table-caption h2 { font-size: 25px; }
.memory-table-caption > p { max-width: 350px; margin: 0; color: var(--muted); font-size: 12px; line-height: 1.65; text-align: right; }
.memory-table-scroll { overflow: auto; overscroll-behavior-x: contain; }
.memory-table { min-width: 940px; }
.memory-row { display: grid; grid-template-columns: 64px 180px minmax(230px, 1fr) repeat(7, 58px); min-height: 66px; border-bottom: 1px solid var(--line); }
.memory-row:last-child { border-bottom: 0; }
.memory-cell { display: flex; align-items: center; min-width: 0; padding: 8px 10px; border-right: 1px solid rgba(39,43,39,.08); }
.memory-cell:last-child { border-right: 0; }
.memory-head { position: sticky; z-index: 5; top: 0; min-height: 48px; color: var(--muted); background: rgba(247,245,240,.96); font-size: 11px; font-weight: 760; letter-spacing: .035em; }
.memory-head .memory-step { justify-content: center; white-space: nowrap; }
.memory-index { justify-content: center; color: var(--muted); font-family: Georgia, serif; font-size: 15px; }
.memory-word { font-family: Georgia, "Noto Serif", serif; font-size: 18px; }
.memory-term { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.memory-definition { font-family: inherit; }
.memory-step { justify-content: center; padding: 7px; }
.memory-row:not(.memory-head) .is-sticky { position: sticky; z-index: 2; background: rgba(252,251,248,.97); }
.memory-head .is-sticky { position: sticky; z-index: 6; background: rgba(247,245,240,.98); }
.memory-index.is-sticky { left: 0; }
.memory-word.is-sticky { left: 64px; }
.memory-definition.is-sticky { left: 244px; box-shadow: 7px 0 13px rgba(35,39,35,.035); }
.memory-meaning { display: grid; gap: 4px; width: 100%; padding: 4px 0; border: 0; color: var(--ink); background: transparent; font: inherit; text-align: left; }
.memory-meaning span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13px; line-height: 1.35; }
.memory-meaning b { display: inline-block; min-width: 33px; margin-right: 6px; color: var(--warm); font-size: 11px; }
.memory-meaning.is-hidden { display: grid; min-height: 34px; place-items: center start; color: var(--muted); letter-spacing: .18em; }
.memory-circle { display: grid; width: 42px; height: 42px; place-items: center; padding: 0; border: 1.5px solid rgba(147,111,73,.62); border-radius: 50%; color: transparent; background: transparent; font-size: 20px; font-weight: 800; line-height: 1; transition: transform .18s ease, background .18s ease, border .18s ease; }
.memory-circle:hover:not(:disabled) { border-color: var(--warm); transform: translateY(-1px); }
.memory-circle.is-complete { border-color: var(--warm); color: #fff; background: var(--warm); box-shadow: 0 5px 12px rgba(147,111,73,.2); }
.memory-circle:disabled { opacity: .45; cursor: default; }
.memory-entry { display: grid; gap: 2px; width: 100%; }
.memory-entry input { min-height: 38px; padding: 0 9px; border-radius: 10px; font: inherit; font-size: 15px; }
.memory-entry input[aria-invalid="true"] { border-color: rgba(141,92,80,.62); background: rgba(141,92,80,.06); }
.memory-entry small { display: block; min-height: 14px; color: var(--bad); font-family: var(--font-sans, inherit); font-size: 10px; line-height: 1.4; }
.memory-empty { padding: 46px 20px; color: var(--muted); text-align: center; font-size: 14px; line-height: 1.65; }
.memory-more { display: block; min-width: 112px; margin: 17px auto; }
.memory-footnote { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.6; }
html[data-theme="dark"] .memory-modes, html[data-theme="dark"] .memory-table-card { border-color: #45454b; background: #29292d; }
html[data-theme="dark"] .memory-mode.is-active { color: #1f2020; background: #e9e8e1; }
html[data-theme="dark"] .memory-head, html[data-theme="dark"] .memory-head .is-sticky { background: #303034; }
html[data-theme="dark"] .memory-row:not(.memory-head) .is-sticky { background: #29292d; }
html[data-theme="dark"] .memory-cell { border-right-color: rgba(255,255,255,.08); }
html[data-theme="dark"] .memory-meaning { color: #f0f1ec; }
html[data-theme="dark"] .memory-entry input { border-color: #505058; background: #242428; }
@media (max-width: 700px) {
  .topbar .nav, .mobile-nav { grid-template-columns: repeat(7, minmax(0, 1fr)); }
  .memory-page { gap: 17px; }
  .memory-lead { align-items: start; gap: 16px; padding: 19px 0; }
  .memory-summary { min-width: 72px; padding-left: 12px; }
  .memory-summary strong { font-size: 29px; }
  .memory-toolbar { display: grid; grid-template-columns: auto 1fr; }
  .memory-hide-all { justify-self: end; margin-left: 0; }
  .memory-search { grid-column: 1 / -1; min-width: 0; }
  .memory-workspace { grid-template-columns: 1fr; gap: 12px; }
  .memory-sidebar { position: static; padding: 0; }
  .memory-sidebar .section-label { display: none; }
  .memory-directory { display: flex; gap: 6px; overflow-x: auto; padding-bottom: 2px; }
  .memory-directory-item { flex: 0 0 auto; min-height: 33px; padding: 0 10px; border: 1px solid var(--line); background: rgba(255,255,255,.26); }
  .memory-directory-item b { display: none; }
  .memory-table-card { border-radius: 17px; }
  .memory-table-caption { align-items: start; flex-direction: column; gap: 6px; padding: 16px; }
  .memory-table-caption > p { text-align: left; }
  .memory-table { min-width: 820px; }
  .memory-row { grid-template-columns: 56px 146px minmax(205px, 1fr) repeat(7, 54px); min-height: 65px; }
  .memory-word.is-sticky { left: 56px; }
  .memory-definition.is-sticky { left: 202px; }
  .memory-circle { width: 40px; height: 40px; }
}
/* Memory table: phone keeps the word visible while the meaning can slide away;
   iPad uses the same bottom navigation as a touch-first learning surface. */
@media (max-width: 700px) {
  .memory-table { min-width: 692px; }
  .memory-row { grid-template-columns: 50px 132px minmax(174px, 1fr) repeat(7, 48px); min-height: 62px; }
  .memory-index.is-sticky { left: 0; }
  .memory-word.is-sticky { left: 50px; }
  .memory-definition.is-sticky, .memory-head .memory-definition.is-sticky { position: static; box-shadow: none; }
  .memory-entry input { min-height: 42px; font-size: 16px; }
  .memory-circle { width: 37px; height: 37px; }
}

@media (max-width: 480px) {
  .memory-toolbar { grid-template-columns: 1fr; }
  .memory-modes { width: 100%; }
  .memory-mode { flex: 1 1 50%; }
  .memory-hide-all { justify-self: start; }
  .memory-search { grid-column: auto; }
  .memory-lead { display: grid; grid-template-columns: minmax(0, 1fr) auto; }
}

@media (min-width: 701px) and (max-width: 1024px) {
  .topbar .nav { display: none; }
  .mobile-nav {
    position: fixed;
    z-index: 200;
    right: 24px;
    bottom: max(14px, env(safe-area-inset-bottom));
    left: 24px;
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    gap: 3px;
    padding: 6px;
    border: 1px solid rgba(255,255,255,.8);
    border-radius: 18px;
    background: rgba(249,248,244,.96);
    box-shadow: 0 12px 32px rgba(30,33,31,.18);
    backdrop-filter: blur(18px);
  }
  .mobile-nav button { min-height: 46px; padding: 5px 3px; border: 0; border-radius: 12px; color: var(--muted); background: transparent; font: inherit; font-size: 11px; font-weight: 650; }
  .mobile-nav button.is-active, .mobile-nav button:active { color: var(--ink); background: rgba(51,95,109,.12); }
  .app-shell { width: calc(100% - 48px); padding-bottom: calc(100px + env(safe-area-inset-bottom)); }
  .memory-workspace { grid-template-columns: 1fr; gap: 14px; }
  .memory-sidebar { position: static; padding: 0; }
  .memory-sidebar .section-label { display: none; }
  .memory-directory { display: flex; gap: 7px; overflow-x: auto; padding-bottom: 2px; }
  .memory-directory-item { flex: 0 0 auto; min-height: 36px; padding: 0 12px; border: 1px solid var(--line); background: rgba(255,255,255,.28); }
  .memory-table { min-width: 880px; }
  .memory-row { grid-template-columns: 58px 166px minmax(200px, 1fr) repeat(7, 52px); }
  .memory-word.is-sticky { left: 58px; }
  .memory-definition.is-sticky { left: 224px; }
  html[data-theme="dark"] .mobile-nav { border-color: #3a3a3d; background: rgba(36,36,38,.97); }
}

/* Refined memory table: compact paper layout with the warm, precise grid of a study ledger. */
.memory-page { gap: 14px; }
.memory-lead { display: none; }
.memory-workspace { grid-template-columns: 132px minmax(0, 1fr); gap: 16px; }
.memory-sidebar { top: 88px; padding: 0; }
.memory-sidebar .memory-summary { display: grid; gap: 3px; min-width: 0; margin: 0; padding: 13px 12px 12px; border: 1px solid rgba(147,111,73,.28); border-radius: 14px; background: rgba(147,111,73,.06); text-align: left; }
.memory-sidebar .memory-summary strong { font-size: 46px; letter-spacing: -.06em; }
.memory-sidebar .memory-summary span { color: var(--muted); font-size: 12px; }
.memory-sidebar .section-label { margin: 17px 0 5px; }
.memory-directory { gap: 1px; }
.memory-directory-item { min-height: 34px; padding: 0 9px; border: 0; border-left: 2px solid transparent; border-radius: 0 8px 8px 0; background: transparent; }
.memory-directory-item b { min-width: 18px; font-size: 10px; }
.memory-directory-item:hover, .memory-directory-item.is-active { color: var(--ink); background: rgba(147,111,73,.08); }
.memory-directory-item.is-active { border-left-color: var(--warm); }
.memory-toolbar { display: grid; grid-template-columns: auto auto minmax(180px, 230px); justify-content: start; gap: 8px; padding: 7px 9px; border: 1px solid var(--line); border-radius: 14px; background: rgba(255,255,255,.32); }
.memory-modes { gap: 2px; padding: 2px; border: 0; border-radius: 9px; background: rgba(51,95,109,.08); }
.memory-mode { min-height: 32px; padding: 0 12px; border-radius: 7px; font-size: 12px; }
.memory-hide-all { min-height: 32px; margin-left: 0; padding: 0 10px; border: 1px solid var(--line); border-radius: 8px; font-size: 12px; }
.memory-search { min-width: 0; width: 100%; }
.memory-search > span { display: none; }
.memory-search input { min-height: 32px; width: 100%; padding: 0 10px; border-radius: 8px; font-size: 12px; }
.memory-table-card { border-color: rgba(147,111,73,.28); border-radius: 14px; background: rgba(255,255,255,.36); box-shadow: none; }
.memory-table-caption { align-items: center; min-height: 54px; padding: 10px 14px; border-bottom-color: rgba(147,111,73,.25); }
.memory-table-caption .section-label { margin: 0 9px 0 0; color: var(--warm); }
.memory-table-caption > div { display: flex; align-items: baseline; }
.memory-table-caption h2 { font-size: 20px; }
.memory-table-caption > p, .memory-footnote { display: none; }
.memory-table { min-width: 780px; }
.memory-row { grid-template-columns: 52px 168px minmax(200px, 1fr) repeat(7, 48px); min-height: 54px; }
.memory-cell { padding: 5px 8px; border-right-color: rgba(147,111,73,.16); }
.memory-head { min-height: 40px; background: rgba(247,245,240,.98); font-size: 10px; letter-spacing: .05em; }
.memory-index { font-size: 14px; }
.memory-word { font-size: 16px; }
.memory-word.is-sticky { left: 52px; }
.memory-definition.is-sticky { left: 220px; }
.memory-circle { width: 31px; height: 31px; border-width: 1px; font-size: 15px; }
.memory-circle.is-complete { box-shadow: none; }
html[data-theme="dark"] .memory-toolbar, html[data-theme="dark"] .memory-table-card, html[data-theme="dark"] .memory-sidebar .memory-summary { border-color: rgba(221,170,77,.3); background: #242326; }
html[data-theme="dark"] .memory-modes { background: rgba(221,170,77,.1); }
html[data-theme="dark"] .memory-mode.is-active { color: #242326; background: #e7b653; }
html[data-theme="dark"] .memory-hide-all, html[data-theme="dark"] .memory-search input { border-color: rgba(220,216,204,.2); background: #1f1f21; }
html[data-theme="dark"] .memory-head, html[data-theme="dark"] .memory-head .is-sticky { background: #29272a; }
html[data-theme="dark"] .memory-row:not(.memory-head) .is-sticky { background: #242326; }
html[data-theme="dark"] .memory-cell { border-right-color: rgba(221,170,77,.18); }
html[data-theme="dark"] .memory-directory-item:hover, html[data-theme="dark"] .memory-directory-item.is-active { color: #f1ebdb; background: rgba(231,182,83,.1); }
html[data-theme="dark"] .memory-circle { border-color: rgba(231,182,83,.65); }
html[data-theme="dark"] .memory-circle.is-complete { color: #2a241b; border-color: #e7b653; background: #e7b653; }

@media (max-width: 700px) {
  .memory-page { gap: 11px; }
  .memory-toolbar { grid-template-columns: auto auto minmax(0, 1fr); padding: 6px; }
  .memory-search { min-width: 0; }
  .memory-workspace { grid-template-columns: 1fr; gap: 10px; }
  .memory-sidebar { display: grid; gap: 8px; }
  .memory-sidebar .memory-summary { display: flex; align-items: baseline; justify-content: space-between; width: 100%; padding: 10px 12px; }
  .memory-sidebar .memory-summary strong { font-size: 36px; }
  .memory-sidebar .section-label { display: none; }
  .memory-directory { gap: 6px; }
  .memory-directory-item { min-height: 31px; padding: 0 10px; border: 1px solid var(--line); border-radius: 999px; }
  .memory-directory-item.is-active { border-color: var(--warm); }
  .memory-table { min-width: 670px; }
  .memory-row { grid-template-columns: 48px 122px minmax(156px, 1fr) repeat(7, 44px); min-height: 54px; }
  .memory-word.is-sticky { left: 48px; }
  .memory-definition.is-sticky, .memory-head .memory-definition.is-sticky { position: static; }
  .memory-circle { width: 30px; height: 30px; }
}

@media (max-width: 480px) {
  .memory-toolbar { grid-template-columns: 1fr auto; }
  .memory-modes { width: 100%; }
  .memory-mode { flex: 1; }
  .memory-search { grid-column: 1 / -1; }
}

@media (min-width: 701px) and (max-width: 1024px) {
  .memory-workspace { grid-template-columns: 1fr; }
  .memory-sidebar .memory-summary { max-width: 170px; }
  .memory-table { min-width: 780px; }
  .memory-row { grid-template-columns: 52px 168px minmax(200px, 1fr) repeat(7, 48px); }
}

/* Neutral refinement: the memory page borrows the app's quiet slate palette. */
.memory-workspace { grid-template-columns: 188px minmax(0, 1fr); gap: 18px; }
.memory-sidebar { overflow: hidden; padding: 16px 14px 12px; border: 1px solid var(--line); border-radius: 20px; background: rgba(255,255,255,.28); box-shadow: none; }
.memory-sidebar .memory-summary { display: grid; gap: 4px; margin: 0 0 13px; padding: 0 0 13px; border: 0; border-bottom: 1px solid var(--line); border-radius: 0; background: transparent; }
.memory-sidebar .memory-summary span { order: -1; color: var(--muted); font-size: 13px; letter-spacing: .02em; }
.memory-sidebar .memory-summary strong { font-size: 40px; line-height: .95; }
.memory-sidebar .section-label { margin: 0 0 8px; color: var(--ink); font-size: 15px; letter-spacing: 0; text-transform: none; }
.memory-directory { max-height: min(54dvh, 420px); overflow-y: auto; padding-right: 3px; }
.memory-directory-item { min-height: 38px; padding: 0 8px; border-left: 2px solid transparent; border-radius: 8px; font-size: 14px; }
.memory-directory-item b { color: var(--muted); font-size: 11px; }
.memory-directory-item:hover, .memory-directory-item.is-active { color: var(--ink); border-left-color: var(--accent); background: rgba(51,95,109,.09); }
.memory-toolbar { grid-template-columns: auto minmax(180px, 230px) auto; justify-content: start; gap: 9px; padding: 0; border: 0; border-radius: 0; background: transparent; }
.memory-modes { order: 1; }
.memory-search { order: 2; }
.memory-hide-all { order: 3; }
.memory-hide-all { min-height: 36px; border-radius: 10px; }
.memory-search input { min-height: 36px; border-radius: 10px; font-size: 14px; }
.memory-table-card { border-color: var(--line); border-radius: 18px; background: rgba(255,255,255,.3); }
.memory-table-caption { min-height: 58px; padding: 12px 16px; border-bottom-color: var(--line); }
.memory-table-caption .section-label { color: var(--accent); font-size: 12px; }
.memory-table { min-width: 790px; }
.memory-row { grid-template-columns: 52px 176px minmax(214px, 1fr) repeat(7, 46px); min-height: 60px; }
.memory-cell { padding: 7px 9px; border-right-color: var(--line); }
.memory-head { min-height: 42px; background: rgba(247,245,240,.98); font-size: 11px; }
.memory-index { font-size: 16px; }
.memory-word { font-size: 20px; }
.memory-word.is-sticky { left: 52px; }
.memory-definition.is-sticky { left: 228px; }
.memory-meaning span { font-size: 15px; }
.memory-circle { width: 26px; height: 26px; border-color: rgba(51,95,109,.58); font-size: 13px; }
.memory-circle:hover:not(:disabled) { border-color: var(--accent); }
.memory-circle.is-complete { color: #fff; border-color: var(--accent); background: var(--accent); }
.memory-speak { width: 100%; padding: 0; border: 0; color: inherit; background: transparent; font: inherit; text-align: left; cursor: pointer; }
.memory-speak:hover { color: var(--accent); }
.memory-speak:focus-visible { outline-offset: 4px; }
html[data-theme="dark"] .memory-sidebar, html[data-theme="dark"] .memory-table-card { border-color: #494b53; background: #27282c; }
html[data-theme="dark"] .memory-sidebar .memory-summary { border-bottom-color: #494b53; }
html[data-theme="dark"] .memory-directory-item:hover, html[data-theme="dark"] .memory-directory-item.is-active { color: #eef0ec; border-left-color: #8eb8c4; background: rgba(142,184,196,.12); }
html[data-theme="dark"] .memory-head, html[data-theme="dark"] .memory-head .is-sticky { background: #303137; }
html[data-theme="dark"] .memory-row:not(.memory-head) .is-sticky { background: #27282c; }
html[data-theme="dark"] .memory-cell { border-right-color: #45474f; }
html[data-theme="dark"] .memory-circle { border-color: #92a9b8; }
html[data-theme="dark"] .memory-circle.is-complete { color: #1e2628; border-color: #9ec3cd; background: #9ec3cd; }
html[data-theme="dark"] .memory-speak:hover { color: #a9d0db; }

@media (max-width: 700px) {
  .memory-workspace { grid-template-columns: 1fr; gap: 11px; }
  .memory-sidebar { position: static; padding: 13px 12px 10px; border-radius: 16px; }
  .memory-sidebar .memory-summary { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 10px; padding-bottom: 10px; }
  .memory-sidebar .memory-summary strong { font-size: 34px; }
  .memory-directory { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); max-height: none; overflow: visible; padding: 0; }
  .memory-directory-item { min-height: 34px; justify-content: center; padding: 0 5px; border: 0; border-radius: 8px; font-size: 12px; }
  .memory-directory-item b { display: none; }
  .memory-toolbar { grid-template-columns: auto minmax(0, 1fr) auto; gap: 7px; }
  .memory-search input { min-width: 0; padding: 0 9px; }
  .memory-table { min-width: 656px; }
  .memory-row { grid-template-columns: 46px 128px minmax(166px, 1fr) repeat(7, 42px); min-height: 58px; }
  .memory-word { font-size: 18px; }
  .memory-word.is-sticky { left: 46px; }
  .memory-meaning span { font-size: 14px; }
  .memory-circle { width: 24px; height: 24px; font-size: 12px; }
}

@media (max-width: 480px) {
  .memory-toolbar { grid-template-columns: 1fr auto; }
  .memory-modes { grid-column: 1 / -1; width: 100%; }
  .memory-mode { flex: 1; }
  .memory-search { grid-column: 1; }
  .memory-hide-all { grid-column: 2; }
}

@media (min-width: 701px) and (max-width: 1024px) {
  .memory-workspace { grid-template-columns: 220px minmax(0, 1fr); }
  .memory-table { min-width: 790px; }
}

@media (max-width: 700px) {
  .memory-directory { display: grid; grid-template-columns: 1fr; max-height: 270px; overflow-y: auto; padding-right: 3px; }
  .memory-directory-item { justify-content: space-between; padding: 0 9px; font-size: 13px; }
  .memory-directory-item b { display: block; }
}

/* Memory page final polish: compact controls, quieter directory, readable ledger. */
.memory-sidebar > .memory-summary { display: flex !important; align-items: baseline; gap: 9px; min-height: 0; margin: 0 0 13px; padding: 0 0 12px !important; border: 0 !important; border-bottom: 1px solid var(--line) !important; border-radius: 0 !important; background: transparent !important; box-shadow: none !important; text-align: left; }
.memory-sidebar > .memory-summary span { order: 1; color: var(--muted); font-size: 14px; letter-spacing: 0; }
.memory-sidebar > .memory-summary strong { order: 2; margin-left: auto; font-size: 30px; font-weight: 500; letter-spacing: -.04em; line-height: 1; }
.memory-directory-item, .memory-directory-item:hover, .memory-directory-item.is-active { border-left-color: transparent !important; }
.memory-directory-item.is-active { color: var(--ink); background: transparent !important; font-weight: 750; }
html[data-theme="dark"] .memory-directory-item.is-active { color: #eef0ec; background: transparent !important; }
.memory-toolbar { width: 100%; grid-template-columns: auto minmax(0, 1fr) minmax(210px, 280px) auto; align-items: center; }
.memory-modes { grid-column: 1; }
.memory-search { grid-column: 3; justify-self: end; }
.memory-hide-all { grid-column: 4; }
.memory-table { min-width: 822px; }
.memory-row { grid-template-columns: 56px 174px minmax(228px, 1fr) repeat(7, 46px); min-height: 64px; }
.memory-cell { padding: 8px 9px; }
.memory-head { min-height: 44px; }
.memory-head .memory-cell { font-size: 13px; }
.memory-row:not(.memory-head) .memory-cell, .memory-index, .memory-word, .memory-meaning span, .memory-entry input { font-size: 18px; }
.memory-word.is-sticky { left: 56px; }
.memory-definition.is-sticky { left: 230px; }
.memory-circle { width: 20px; height: 20px; font-size: 10px; }
@media (max-width: 700px) {
  .memory-sidebar > .memory-summary { margin-bottom: 10px; padding-bottom: 10px !important; }
  .memory-sidebar > .memory-summary strong { font-size: 28px; }
  .memory-toolbar { grid-template-columns: auto minmax(0, 1fr) minmax(190px, 300px) auto; }
  .memory-modes { grid-column: 1; }
  .memory-search { grid-column: 3; }
  .memory-hide-all { grid-column: 4; }
  .memory-table { min-width: 706px; }
  .memory-row { grid-template-columns: 50px 134px minmax(180px, 1fr) repeat(7, 40px); min-height: 61px; }
  .memory-word.is-sticky { left: 50px; }
  .memory-definition.is-sticky { left: 184px; }
  .memory-row:not(.memory-head) .memory-cell, .memory-index, .memory-word, .memory-meaning span, .memory-entry input { font-size: 17px; }
  .memory-circle { width: 18px; height: 18px; font-size: 9px; }
}
@media (max-width: 480px) {
  .memory-toolbar { grid-template-columns: minmax(0, 1fr) auto; }
  .memory-modes { grid-column: 1 / -1; }
  .memory-search { grid-column: 1; }
  .memory-hide-all { grid-column: 2; }
}

/* Memory toolbar: controls only, without a full-width background band. */
.memory-toolbar { padding: 0; border: 0 !important; background: transparent !important; box-shadow: none !important; }
html[data-theme="dark"] .memory-toolbar { border-color: transparent !important; background: transparent !important; }
html[data-theme="dark"] .memory-modes { border-color: #454951; background: #2c2f35; box-shadow: none; }
html[data-theme="dark"] .memory-mode { color: #bcc2cd; }
html[data-theme="dark"] .memory-mode.is-active { color: #f4f5f7; background: #4b5662; box-shadow: none; }
html[data-theme="dark"] .memory-mode:not(.is-active):hover { color: #e4e8ed; background: rgba(150, 165, 180, .11); }

/* Full Chinese definitions stay readable instead of being cut off with an ellipsis. */
.memory-meaning { gap: 6px; }
.memory-meaning span { overflow: visible; text-overflow: clip; white-space: normal; overflow-wrap: anywhere; line-height: 1.55; }
.memory-meaning b { vertical-align: top; }

/* Learning readability and stable iPad meaning cards. */
.learning-page { --learning-sentence-size: clamp(23px, 2.7vw, 30px); }
.learning-page .story-line { font-size: var(--learning-sentence-size); line-height: 1.58; }
.learning-page .story-translation { font-size: calc(var(--learning-sentence-size) - 2px); line-height: 1.62; }

.review-card .scene-cn { font-size: clamp(20px, 2.25vw, 24px); line-height: 1.7; }
.review-card .cloze { font-size: clamp(30px, 4.9vw, 46px); line-height: 1.38; }

/* Larger bilingual type for the selected-word explanation. */
.word-popover { padding: 22px; }
.word-popover h3 { font-size: clamp(32px, 4vw, 38px); line-height: 1.08; }
.word-popover .word-phonetic { font-size: 16px; line-height: 1.55; }
.word-popover .sentence-sense > small { font-size: 13px; }
.word-popover .popover-current-sense { font-size: 20px !important; line-height: 1.55; }
.word-popover .popover-current-sense span { font-size: 14px; }
/* Phone memory ledger: no overlap, full definitions, and every review step stays tappable. */ .memory-steps { display: contents; } .memory-steps > .memory-cell:last-child { border-right: 0; } @media (max-width: 700px) { html[data-view="memory"] .mobile-nav { position: static; inset: auto; width: calc(100% - 24px); margin: 8px 12px 0; transform: none; } html[data-view="memory"] .app-shell { padding-bottom: calc(28px + env(safe-area-inset-bottom)) !important; } html[data-view="memory"] .memory-table-scroll { overflow-x: hidden; } html[data-view="memory"] .memory-table { width: 100%; min-width: 0; } html[data-view="memory"] .memory-row { grid-template-columns: 38px minmax(86px, .72fr) minmax(0, 1.45fr); grid-template-areas: "index word definition" ". steps steps"; min-height: 0; } html[data-view="memory"] .memory-index { grid-area: index; position: static !important; } html[data-view="memory"] .memory-word { grid-area: word; position: static !important; } html[data-view="memory"] .memory-definition { grid-area: definition; position: static !important; box-shadow: none; } html[data-view="memory"] .memory-steps { display: grid; grid-area: steps; grid-template-columns: repeat(7, minmax(0, 1fr)); min-width: 0; padding: 3px 4px 8px; } html[data-view="memory"] .memory-step { display: flex; min-width: 0; min-height: 34px; padding: 3px; border: 0; } html[data-view="memory"] .memory-head .memory-steps { padding: 3px 4px 5px; } html[data-view="memory"] .memory-head .memory-step { min-height: 28px; font-size: 9px; line-height: 1.1; text-align: center; } html[data-view="memory"] .memory-cell { padding: 8px 7px; } html[data-view="memory"] .memory-row:not(.memory-head) .memory-cell, html[data-view="memory"] .memory-index, html[data-view="memory"] .memory-word, html[data-view="memory"] .memory-meaning span, html[data-view="memory"] .memory-entry input { font-size: 16px; } html[data-view="memory"] .memory-meaning span { line-height: 1.48; } }
/* Memory keeps the same bottom navigation position as every other mobile view. */
@media (max-width: 700px) {
  html[data-view="memory"] .mobile-nav {
    position: fixed !important;
    right: 9px !important;
    bottom: calc(7px + env(safe-area-inset-bottom)) !important;
    left: 9px !important;
    width: auto !important;
    margin: 0 !important;
  }
  html[data-view="memory"] .app-shell {
    padding-bottom: calc(102px + env(safe-area-inset-bottom)) !important;
  }
}