/* iOS-only chrome. The browser version keeps its existing layout. */
html[data-platform="ios"] {
  background: #fff;
  -webkit-text-size-adjust: 100%;
  --ios-bottom: max(18px, env(safe-area-inset-bottom));
}
html[data-platform="ios"] body { background: #fff; }
html[data-platform="ios"] :where(button, a) { -webkit-tap-highlight-color: transparent; touch-action: manipulation; }
html[data-platform="ios"] .topbar {
  min-height: 52px;
  height: 52px;
  padding: 0 16px;
  border-bottom: 1px solid #e6e6e6;
  background: #fff;
}
html[data-platform="ios"] .brand { min-height: 44px; gap: 8px; }
html[data-platform="ios"] .brand img { width: 28px; height: 28px; }
html[data-platform="ios"] .brand-copy strong { font-size: 17px; letter-spacing: -.6px; }
html[data-platform="ios"] .brand-copy small { display: none; }
html[data-platform="ios"] .top-actions { gap: 0; }
html[data-platform="ios"] .topbar .icon-button { width: 44px; height: 44px; border: 0; border-radius: 50%; }
html[data-platform="ios"] .topbar .icon-button svg { width: 21px; height: 21px; }
html[data-platform="ios"] .main-content { width: 100%; padding: 0 16px calc(84px + var(--ios-bottom)); }
html[data-platform="ios"] .primary-nav {
  position: fixed;
  inset: auto 0 0;
  width: 100%;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  padding: 6px 12px var(--ios-bottom);
  border: 0;
  border-top: 1px solid #e1e1e1;
  border-radius: 0;
  background: #fff;
}
html[data-platform="ios"] .nav-item {
  flex-direction: column;
  min-height: 48px;
  gap: 3px;
  border-radius: 12px;
  color: #777;
  font-size: 11px;
  font-weight: 650;
}
html[data-platform="ios"] .nav-item.is-active { background: #f0f0f0; color: #111; }
html[data-platform="ios"] .nav-item svg { width: 22px; height: 22px; }
html[data-platform="ios"] .app-footer { display: none; }
html[data-platform="ios"] :where(input, textarea, select) { font-size: max(16px, 1rem); }
html[data-platform="ios"] :where(input, textarea) { scroll-margin-block: 70px 24px; }
html[data-platform="ios"] :where(.primary-button, .secondary-button) { min-height: 50px; border-radius: 10px; font-size: 16px; }
html[data-platform="ios"] .primary-button { border-width: 1px; }
html[data-platform="ios"] .secondary-button { border-color: #d0d0d0; }
html[data-platform="ios"] .idiom-mission-shell { width: calc(100% + 32px); margin-inline: -16px; border: 0; }
html[data-platform="ios"] .idiom-mission-cover { min-height: 310px; }
html[data-platform="ios"] .idiom-mission-cover-content { padding: 12px 20px 28px; }
html[data-platform="ios"] .idiom-mission-cover-copy { max-width: calc(100% - 42px); padding-top: 30px; }
html[data-platform="ios"] .idiom-mission-cover-copy h1 { max-width: 14ch; font-size: clamp(28px, 8.4vw, 36px); line-height: 1.15; letter-spacing: -.05em; }
html[data-platform="ios"] .idiom-mission-cover-copy > p:last-child { font-size: 13px; line-height: 1.6; }
html[data-platform="ios"] .idiom-mission-cover-count { bottom: 28px; right: 16px; font-size: 32px; }
html[data-platform="ios"] .idiom-mission-tabs { width: 100%; margin: 0; }
html[data-platform="ios"] .idiom-mission-tabs li > :where(a, span) { min-height: 62px; padding: 12px 10px; border-right: 0; }
html[data-platform="ios"] .idiom-mission-tabs strong { font-size: 12px; }
html[data-platform="ios"] .idiom-mission-tabs small { font-size: 10px; }
html[data-platform="ios"] .idiom-mission { padding: 24px 20px; gap: 24px; margin-bottom: 0; }
html[data-platform="ios"] .idiom-mission-two .idiom-challenge-log { border: 0; padding: 0; gap: 16px; max-height: 440px; }
html[data-platform="ios"] .idiom-mission-two .idiom-challenge-log li { width: 89%; border-width: 0; padding: 15px 16px; border-radius: 16px; }
html[data-platform="ios"] .idiom-mission-two .idiom-challenge-log li.is-assistant { background: #f0f0f0; border-bottom-left-radius: 4px; }
html[data-platform="ios"] .idiom-mission-two .idiom-challenge-log li.is-user { background: #171717; border-bottom-right-radius: 4px; }
html[data-platform="ios"] .idiom-challenge-log :where(p, blockquote) { font-size: 16px; line-height: 1.65; }
html[data-platform="ios"] .idiom-challenge-log li > span { font-size: 12px; }
html[data-platform="ios"] .idiom-mission-two :where(textarea, .idiom-challenge-form) { border-width: 1px; border-color: #ccc; border-radius: 12px; }
html[data-platform="ios"] textarea { min-height: 140px; padding: 16px; line-height: 1.7; border-width: 1px; border-color: #bbb; border-radius: 12px; }
html[data-platform="ios"] .idiom-mission-four-writing-form { padding: 0; border: 0; }
html[data-platform="ios"] .idiom-mission-four-writing-form > h3 { font-size: 20px; line-height: 1.5; }
html[data-platform="ios"] .idiom-mission-four-word-group { padding: 18px 0; border-width: 0 0 1px; border-color: #ddd; }
html[data-platform="ios"] .idiom-mission-four-stepper { border-width: 1px; border-color: #ddd; }
html[data-platform="ios"] .idiom-mission-four-story { grid-template-columns: 86px minmax(0, 1fr); border: 0; }
html[data-platform="ios"] .idiom-mission-four-story > blockquote { padding: 4px 0 4px 16px; }
html[data-platform="ios"] .idiom-mission-reset-row { padding-top: 20px; }
html[data-platform="ios"] .idiom-mission-reset-row .secondary-button { color: #666; font-size: 14px; }
html[data-platform="ios"] .alice-prologue { padding-top: 24px; }
html[data-platform="ios"] .alice-prologue-head h1 { font-size: 32px; line-height: 1.2; letter-spacing: -.06em; }
html[data-platform="ios"] .alice-prologue-head p { font-size: 14px; line-height: 1.65; }
html[data-platform="ios"] .alice-prologue-scene { border: 0; }
html[data-platform="ios"] .alice-prologue-copy { padding: 24px 4px; }
html[data-platform="ios"] .alice-prologue-copy h2 { font-size: 26px; line-height: 1.3; }
html[data-platform="ios"] .alice-prologue-copy > p { font-size: 16px; line-height: 1.8; }
html[data-platform="ios"] .idiom-inline-editor-dialog { max-height: 80svh; border-radius: 16px 16px 0 0; }
html[data-platform="ios"][data-keyboard="open"] .primary-nav { display: none; }
html[data-platform="ios"][data-keyboard="open"] .main-content { padding-bottom: 28px; }
html[data-platform="ios"][data-keyboard="open"] textarea { min-height: 112px; }
@media (prefers-reduced-motion: no-preference) {
  html[data-platform="ios"] .nav-item { transition: background-color 140ms ease; }
  html[data-platform="ios"] :where(.primary-button, .secondary-button):active { transform: scale(.98); transition: transform 100ms ease; }
}
@media (min-width: 700px) {
  html[data-platform="ios"] .main-content { max-width: 800px; margin-inline: auto; }
}

/* A lesson is a viewport-sized workspace, not a shrunken desktop page.
   Only reading regions scroll. Forms and the current action remain in view. */
html[data-platform="ios"][data-ios-screen] body { overflow: hidden; }
html[data-platform="ios"][data-ios-screen] .page-shell {
  display: flex;
  flex-direction: column;
  height: var(--ios-viewport-height, 100dvh);
  min-height: 0;
  overflow: hidden;
}
html[data-platform="ios"][data-ios-screen] .topbar { position: static; flex: 0 0 52px; }
html[data-platform="ios"][data-ios-screen] .primary-nav { position: static; flex: none; margin: 0; }
html[data-platform="ios"][data-ios-screen] .main-content {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  padding: 0;
  margin: 0 auto;
  overflow: hidden;
}
html[data-platform="ios"] [hidden] { display: none !important; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-shell {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  width: 100%;
  margin: 0;
}
html[data-platform="ios"] .ios-mission-heading {
  display: flex;
  align-items: center;
  flex: none;
  gap: 10px;
  padding: 12px 16px;
  background: #faf9f6;
}
html[data-platform="ios"] .ios-character-portrait { width: 56px; height: 64px; object-fit: cover; object-position: center 30%; border-radius: 10px; }
html[data-platform="ios"] .ios-mission-title { flex: 1; min-width: 0; }
html[data-platform="ios"] .ios-mission-title small { display: block; color: #777; font-size: 10px; margin-bottom: 5px; }
html[data-platform="ios"] .ios-mission-title h1 { margin: 0; max-width: none; font-size: 18px; line-height: 1.3; letter-spacing: -.6px; word-break: keep-all; overflow-wrap: anywhere; }
html[data-platform="ios"] .ios-mission-menu { display: flex; flex-direction: row; }
html[data-platform="ios"] .ios-text-button { border: 0; background: none; color: #333; font: inherit; font-size: 12px; font-weight: 700; min-width: 44px; min-height: 44px; padding: 6px 8px; cursor: pointer; }
html[data-platform="ios"] .ios-mission-menu .ios-text-button { min-height: 44px; }
html[data-platform="ios"] .ios-compact-timer { font-size: 16px; border: 0; padding: 0; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-tabs { flex: none; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-tabs li > :where(a, span) { min-height: 42px; padding: 11px 6px; text-align: center; align-items: center; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-tabs small { display: none; }
html[data-platform="ios"][data-ios-screen] .idiom-stage-page,
html[data-platform="ios"][data-ios-screen] .idiom-mission {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}
html[data-platform="ios"][data-ios-screen] .idiom-stage-page { padding: 0; margin: 0; }
html[data-platform="ios"][data-ios-screen] .idiom-mission { padding: 12px 16px; gap: 10px; border: 0; }
html[data-platform="ios"][data-ios-screen] .idiom-mission > .idiom-editable-action { flex: none; margin: 0; }
html[data-platform="ios"][data-ios-screen] :where(.primary-button, .secondary-button) { width: 100%; min-height: 48px; padding: 10px 14px; font-size: 15px; }
html[data-platform="ios"] .ios-reading-pane { flex: 1; min-height: 0; overflow-y: auto; overscroll-behavior-y: contain; scrollbar-width: thin; padding: 0 2px 8px; }
html[data-platform="ios"] .ios-reading-pane:focus-visible { outline: 2px solid #777; outline-offset: -2px; }
html[data-platform="ios"] .ios-reading-switch { display: flex; flex: none; border-bottom: 1px solid #ddd; }
html[data-platform="ios"] .ios-reading-switch button { flex: 1; font-size: 13px; }
html[data-platform="ios"] .ios-reading-switch button[aria-pressed="true"] { color: #111; box-shadow: inset 0 -2px #111; }
html[data-platform="ios"] .ios-reading-next { flex: none; }
html[data-platform="ios"][data-ios-screen] .idiom-cursed-map { padding: 16px 12px; border: 0; background: #faf9f6; }
html[data-platform="ios"][data-ios-screen] .idiom-cursed-map > p { font-size: 12px; margin: 0 0 14px; }
html[data-platform="ios"][data-ios-screen] .idiom-cursed-map > strong { font-size: 46px; letter-spacing: .08em; }
html[data-platform="ios"][data-ios-screen] .idiom-cursed-map > div { font-size: 16px; line-height: 1.7; margin-top: 16px; }
html[data-platform="ios"][data-ios-screen] .idiom-cursed-map > blockquote { font-size: 14px; line-height: 1.65; padding: 12px 0 0; margin: 16px 0 0; border-width: 1px 0 0; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-check { margin: 0; padding: 0; border: 0; gap: 8px; grid-template-columns: 1fr; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-check legend { font-size: 18px; line-height: 1.5; margin-bottom: 14px; padding: 0; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-check label { min-height: 54px; align-items: center; padding: 12px 10px; margin: 0; gap: 10px; border: 1px solid #ddd; border-radius: 10px; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-check label span { font-size: 15px; line-height: 1.5; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-choice-result { font-size: 11px; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-feedback { padding: 12px; font-size: 14px; line-height: 1.6; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-two .idiom-challenge-log {
  flex: 1;
  min-height: 0;
  max-height: none;
  height: auto;
  overflow-y: auto;
  overscroll-behavior-y: contain;
  margin: 0;
  gap: 12px;
  align-content: start;
}
html[data-platform="ios"][data-ios-screen] .idiom-mission-two .idiom-challenge-log li { flex: none; padding: 12px 14px; }
html[data-platform="ios"][data-ios-screen] .idiom-challenge-log p { margin-top: 6px; font-size: 16px; line-height: 1.6; }
html[data-platform="ios"][data-ios-screen] .idiom-challenge-compose { display: flex; flex-direction: column; flex: none; gap: 8px; margin: 0; padding: 0; border: 0; }
html[data-platform="ios"][data-ios-screen] textarea { height: 100px; min-height: 0; max-height: none; resize: none; padding: 12px; font-size: 16px; line-height: 1.6; border: 1px solid #bbb; border-radius: 10px; }
html[data-platform="ios"][data-ios-screen] .idiom-challenge-compose > div { padding: 0; border: 0; }
html[data-platform="ios"][data-ios-screen] .idiom-ai-state { flex: none; max-height: 74px; overflow-y: auto; margin: 0; padding: 8px 12px; font-size: 14px; line-height: 1.5; }
html[data-platform="ios"][data-ios-screen] :where(.idiom-mission-victory, .idiom-mission-failure) { padding: 8px 0; border: 0; }
html[data-platform="ios"][data-ios-screen] :where(.idiom-mission-victory, .idiom-mission-failure) > strong { font-size: 16px; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-rabbit-speech { margin: 20px 0; padding: 14px; border: 0; background: #f2f1ef; border-radius: 12px; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-rabbit-speech p { font-size: 16px; line-height: 1.7; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-rabbit-speech > span { font-size: 12px; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-victory-epilogue { padding: 14px 0; border-width: 1px 0 0; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-victory-epilogue p { font-size: 15px; line-height: 1.7; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-topic { display: flex; flex-wrap: wrap; align-items: center; flex: none; gap: 4px 8px; padding: 0; border: 0; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-topic > span { display: inline; padding: 0; background: none; color: #777; font-size: 12px; writing-mode: horizontal-tb; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-topic > strong { font-size: 19px; line-height: 1.4; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-topic .ios-text-button { margin-left: auto; }
html[data-platform="ios"][data-ios-screen] .ios-writing-prompt { order: 1; width: 100%; max-height: 100px; overflow: auto; margin: 0; font-size: 14px; line-height: 1.6; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-essay { display: flex; flex-direction: column; flex: 1; gap: 8px; min-height: 0; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-essay > span { font-size: 12px; color: #777; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-essay textarea { flex: 1; width: 100%; background: #fff; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-writing-actions { display: flex; flex-direction: column; align-items: stretch; gap: 6px; flex: none; margin: 0; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-writing-actions > span { font-size: 12px; color: #777; }
html[data-platform="ios"][data-ios-screen] .idiom-challenge-setting { font-size: 12px; line-height: 1.5; margin: 0; }
html[data-platform="ios"] .ios-essay-edit { display: flex; flex-direction: column; gap: 10px; min-height: 0; flex: 1; }
html[data-platform="ios"][data-ios-screen] .idiom-stamp-board { margin: 12px 0; }
html[data-platform="ios"][data-ios-screen] .idiom-stamp-board :where(header, .idiom-stamp) { padding: 12px; }
html[data-platform="ios"][data-ios-screen] .idiom-stamp-board :where(h3, strong) { font-size: 17px; }
html[data-platform="ios"][data-ios-screen] .idiom-stamp-board p { font-size: 14px; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-learning { display: flex; flex-direction: column; gap: 10px; flex: 1; min-height: 0; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-learning:not(:has(.idiom-mission-four-word-bank)) .idiom-mission-four-writing-form { margin-top: auto; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-stepper { border: 0; flex: none; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-stepper button { display: flex; justify-content: center; min-height: 44px; padding: 6px; border-radius: 8px; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-stepper button b { font-size: 22px; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-stepper button small { display: none; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-word-bank { flex: 1; min-height: 80px; display: block; border: 0; overflow-y: auto; overscroll-behavior-y: contain; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-word-group { padding: 0; border: 0; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-word-group > header { grid-template-columns: 44px 1fr; gap: 10px; margin-bottom: 8px; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-word-group > header > b { font-size: 34px; border: 0; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-word-group > header > div { display: flex; flex-wrap: wrap; gap: 3px 12px; align-items: center; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-word-group > header span { width: 100%; font-size: 10px; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-word-group > header strong { font-size: 16px; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-word-group > header small { font-size: 13px; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-word-group li { padding: 8px 0; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-word-group li strong { font-size: 15px; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-word-group li p { font-size: 13px; margin: 2px 0 0; }
html[data-platform="ios"] .ios-word-caption { display: block; color: #777; font-size: 11px; margin-bottom: 6px; }
html[data-platform="ios"][data-ios-screen] .ios-word-options { display: flex; gap: 6px; }
html[data-platform="ios"][data-ios-screen] .ios-word-options li { flex: 1; min-width: 0; padding: 0; border: 0; }
html[data-platform="ios"][data-ios-screen] .ios-word-options button { width: 100%; min-height: 48px; padding: 8px 4px; border: 1px solid #ddd; border-radius: 8px; text-align: center; }
html[data-platform="ios"][data-ios-screen] .ios-word-options button[aria-pressed="true"] { border-color: #111; background: #f2f1ed; }
html[data-platform="ios"][data-ios-screen] .ios-word-options strong { font-size: 14px; }
html[data-platform="ios"][data-ios-screen] .ios-word-options strong b { display: block; margin: 4px 0 0; font-size: 13px; font-weight: 400; }
html[data-platform="ios"] .ios-word-meaning p { font-size: 14px; line-height: 1.55; margin: 8px 0 0; color: #555; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-writing-form { display: flex; flex-direction: column; gap: 7px; flex: none; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-writing-heading > span { display: none; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-writing-heading > label { font-size: 14px; line-height: 1.45; max-width: none; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-writing-meta { flex-wrap: nowrap; gap: 4px; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-writing-meta > small { font-size: 11px; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-writing-meta > span { display: none; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-writing-meta button { min-height: 28px; padding-block: 0; }
html[data-platform="ios"][data-ios-screen] :where(.idiom-sentence-result, .idiom-mission-four-writing-feedback) { padding: 10px; font-size: 14px; line-height: 1.5; max-height: 110px; overflow-y: auto; border-width: 0; border-radius: 8px; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-scene { display: flex; flex-direction: column; border: 0; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-scene > figure { min-height: 0; height: 180px; border: 0; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-scene > figure img { width: 100%; height: 100%; object-fit: cover; object-position: center 35%; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-scene > div { padding: 16px 0; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-scene h2 { font-size: 24px; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-scene :where(p, blockquote) { font-size: 15px; line-height: 1.65; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-scene blockquote { margin: 12px 0; padding: 12px; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-clue { margin-top: 12px; padding: 12px; }
html[data-platform="ios"][data-ios-screen] .idiom-mission-four-points { font-size: 20px; padding: 8px; }

/* Prologue: picture, scene selector, and text share the same screen. */
html[data-platform="ios"][data-ios-screen="prologue"] .alice-prologue { display: flex; flex-direction: column; flex: 1; min-height: 0; padding: 14px 16px 12px; gap: 12px; }
html[data-platform="ios"][data-ios-screen="prologue"] .alice-prologue-head { display: flex; align-items: center; flex: none; margin: 0; gap: 10px; }
html[data-platform="ios"][data-ios-screen="prologue"] .alice-prologue-head > div { flex: 1; }
html[data-platform="ios"][data-ios-screen="prologue"] .alice-prologue-head h1 { font-size: 23px; line-height: 1.25; }
html[data-platform="ios"][data-ios-screen="prologue"] .alice-prologue-head .eyebrow { font-size: 10px; margin-bottom: 7px; }
html[data-platform="ios"][data-ios-screen="prologue"] .alice-prologue-scene { display: flex; flex-direction: column; flex: 1; min-height: 0; overflow: hidden; }
html[data-platform="ios"][data-ios-screen="prologue"] .alice-prologue-visual { display: flex; flex-direction: column; flex: none; min-height: 0; }
html[data-platform="ios"][data-ios-screen="prologue"] .alice-prologue-scene figure { height: clamp(120px, 27dvh, 220px); min-height: 0; aspect-ratio: auto; border: 0; border-radius: 10px; }
html[data-platform="ios"][data-ios-screen="prologue"] .alice-prologue-scene figure :where(img, .alice-prologue-diary) { height: 100%; min-height: 0; object-fit: cover; object-position: center 62%; }
html[data-platform="ios"][data-ios-screen="prologue"] .alice-prologue-scenes { flex: none; border: 0; gap: 6px; margin-top: 8px; }
html[data-platform="ios"][data-ios-screen="prologue"] .alice-prologue-scenes li { border: 0; }
html[data-platform="ios"][data-ios-screen="prologue"] .alice-prologue-scenes button { min-height: 44px; padding: 6px; font-size: 15px; border: 0; border-radius: 8px; background: #f0f0f0; }
html[data-platform="ios"][data-ios-screen="prologue"] .alice-prologue-scenes button.is-current { background: #111; color: #fff; }
html[data-platform="ios"][data-ios-screen="prologue"] .alice-prologue-copy { min-height: 0; overflow-y: auto; flex: 1; padding: 14px 2px 4px; overscroll-behavior-y: contain; }
html[data-platform="ios"][data-ios-screen="prologue"] .alice-prologue-copy .alice-prologue-speaker { font-size: 11px; margin: 0 0 7px; padding: 0; border: 0; }
html[data-platform="ios"][data-ios-screen="prologue"] .alice-prologue-copy h2 { font-size: 20px; margin: 0 0 10px; }
html[data-platform="ios"][data-ios-screen="prologue"] .alice-prologue-copy > p:not(.alice-prologue-speaker) { font-size: 16px; line-height: 1.65; margin: 0; }
html[data-platform="ios"][data-ios-screen="prologue"] .alice-prologue-copy blockquote { margin: 12px 0 0; padding: 10px 12px; font-size: 15px; line-height: 1.6; border-width: 0; border-radius: 8px; }
html[data-platform="ios"][data-ios-screen="prologue"] .alice-prologue-final-action { margin: 0; flex: none; }

/* Full text and reset/edit controls are never clipped: explicit modal sheets. */
html[data-platform="ios"] .ios-detail-sheet {
  width: calc(100% - 16px); max-width: 700px; max-height: min(85dvh, 760px);
  padding: 0; border: 0; border-radius: 18px; margin: auto auto 8px;
  background: #fff; color: #111; box-shadow: 0 12px 60px #0004;
}
html[data-platform="ios"] .ios-detail-sheet[open] { display: flex; flex-direction: column; }
html[data-platform="ios"] .ios-detail-sheet::backdrop { background: #0006; }
html[data-platform="ios"] .ios-sheet-header { flex: none; display: flex; justify-content: space-between; align-items: center; padding: 8px 16px; border-bottom: 1px solid #ddd; }
html[data-platform="ios"] .ios-sheet-header h2 { font-size: 17px; margin: 0; }
html[data-platform="ios"] .ios-sheet-content { padding: 16px 16px calc(16px + env(safe-area-inset-bottom)); min-height: 0; overflow-y: auto; }
html[data-platform="ios"] .ios-sheet-content .idiom-mission-cover { min-height: 0; border-radius: 10px; overflow: hidden; }
html[data-platform="ios"] .ios-sheet-content .idiom-mission-cover-content { padding: 18px; }
html[data-platform="ios"] .ios-sheet-content .idiom-mission-cover-copy { max-width: none; padding-top: 25px; }
html[data-platform="ios"] .ios-sheet-content .idiom-mission-cover-copy > p:last-child { display: block; -webkit-line-clamp: unset; max-height: none; overflow: visible; font-size: 16px; }
html[data-platform="ios"] .ios-sheet-content .idiom-mission-cover-count { display: none; }
html[data-platform="ios"] .ios-sheet-content .idiom-content-admin-rail { margin: 20px 0 0; padding: 12px; }
html[data-platform="ios"] .ios-sheet-content .idiom-content-admin-rail strong { font-size: 14px; }
html[data-platform="ios"] .ios-sheet-content .idiom-mission-four-story { display: block; }
html[data-platform="ios"] .ios-sheet-content .idiom-mission-four-story > img { width: 80px; }
html[data-platform="ios"] .ios-sheet-content .idiom-mission-four-story p { font-size: 16px; line-height: 1.7; }
html[data-platform="ios"] .ios-sheet-content .idiom-mission-topic { display: block; padding: 0; }
html[data-platform="ios"] .ios-sheet-content .idiom-mission-topic > p { font-size: 16px; line-height: 1.7; }
html[data-platform="ios"] .ios-sheet-content .idiom-mission-four-writing-heading > label { font-size: 18px; }
html[data-platform="ios"] .ios-sheet-content .alice-prologue-stakes { margin: 12px 0; padding: 16px; font-size: 15px; }

/* Keyboard changes the workspace, not just the tab bar. */
html[data-platform="ios"][data-ios-screen][data-keyboard="open"] .ios-mission-heading { padding: 5px 16px; gap: 8px; }
html[data-platform="ios"][data-ios-screen][data-keyboard="open"] .ios-character-portrait { width: 30px; height: 34px; }
html[data-platform="ios"][data-ios-screen][data-keyboard="open"] .ios-mission-title small { display: none; }
html[data-platform="ios"][data-ios-screen][data-keyboard="open"] .ios-mission-title h1 { font-size: 14px; }
html[data-platform="ios"][data-ios-screen][data-keyboard="open"] .ios-mission-menu { flex-direction: row; }
html[data-platform="ios"][data-ios-screen][data-keyboard="open"] .idiom-mission-tabs { display: none; }
html[data-platform="ios"][data-ios-screen][data-keyboard="open"] .idiom-mission { gap: 6px; padding-block: 6px; }
html[data-platform="ios"][data-ios-screen][data-keyboard="open"] textarea { height: 64px; }
html[data-platform="ios"][data-ios-screen][data-keyboard="open"] :where(.ios-writing-prompt, .idiom-mission-essay > span, .idiom-mission-four-writing-heading) { display: none; }
html[data-platform="ios"][data-ios-screen][data-keyboard="open"] .idiom-mission-four-learning { gap: 4px; }
html[data-platform="ios"][data-ios-screen][data-keyboard="open"] .idiom-mission-four-stepper { display: none; }
html[data-platform="ios"][data-ios-screen][data-keyboard="open"] .idiom-mission-four-word-bank { min-height: 28px; }
html[data-platform="ios"][data-ios-screen][data-keyboard="open"] .idiom-mission-four-word-group > header { display: none; }
html[data-platform="ios"][data-ios-screen][data-keyboard="open"] .ios-word-caption { display: none; }
html[data-platform="ios"][data-ios-screen][data-keyboard="open"] .ios-word-options strong b { display: none; }
html[data-platform="ios"][data-ios-screen][data-keyboard="open"] :where(.idiom-sentence-result, .idiom-mission-four-writing-feedback) { max-height: 56px; }
@media (max-height: 680px) {
  html[data-platform="ios"][data-ios-screen] .ios-mission-heading { padding-block: 8px; }
  html[data-platform="ios"][data-ios-screen] .ios-mission-title h1 { font-size: 16px; }
  html[data-platform="ios"][data-ios-screen] .ios-mission-title small { display: none; }
  html[data-platform="ios"][data-ios-screen] .ios-character-portrait { width: 40px; height: 48px; }
  html[data-platform="ios"][data-ios-screen] .idiom-mission-four-writing-form textarea { height: 64px; }
  html[data-platform="ios"][data-ios-screen] .idiom-mission-four-writing-heading { display: none; }
  html[data-platform="ios"][data-ios-screen] .idiom-mission-four-word-bank { min-height: 120px; }
  html[data-platform="ios"][data-ios-screen] .ios-word-caption { display: none; }
  html[data-platform="ios"][data-ios-screen] .ios-word-options strong b { display: none; }
  html[data-platform="ios"][data-ios-screen] .idiom-mission-four-word-group > header { grid-template-columns: 36px 1fr; margin-bottom: 6px; }
  html[data-platform="ios"][data-ios-screen] .idiom-mission-four-word-group > header span { display: none; }
  html[data-platform="ios"][data-ios-screen] .idiom-mission-check legend { font-size: 16px; line-height: 1.4; margin-bottom: 8px; }
  html[data-platform="ios"][data-ios-screen] .idiom-mission-check label { min-height: 44px; padding: 9px 10px; }
  html[data-platform="ios"][data-ios-screen] .idiom-mission-check { gap: 6px; }
  html[data-platform="ios"][data-ios-screen="prologue"] .alice-prologue-scene figure { height: 140px; }
}