:root {
  --paper: #faf9fd;
  --white: #fff;
  --ink: #393244;
  --muted: #6f6678;
  --purple: #8b70b4;
  --purple-deep: #675083;
  --lilac: #eee7f8;
  --line: #e9e3ef;
  --aqua: #e4f3f6;
  --aqua-ink: #3c6974;
  --example-border: #8fbcc6;
  --rule-border: #b49aca;
  --orange: #f5b489;
  --orange-ink: #663e2c;
  --yellow: #fbf3d2;
  --font: "Noto Sans TC", sans-serif;
  color-scheme: light;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
button,
a {
  -webkit-tap-highlight-color: transparent;
}
button {
  font: inherit;
  cursor: pointer;
}
button:disabled {
  cursor: default;
}
button,
a {
  touch-action: manipulation;
}
button:focus-visible,
a:focus-visible {
  outline: 3px solid var(--purple);
  outline-offset: 5px;
}
button {
  color: inherit;
}
a {
  color: inherit;
}
img {
  max-width: 100%;
  display: block;
}
h1,
h2,
h3,
p {
  margin: 0;
}
button {
  border: 0;
}
button svg {
  flex-shrink: 0;
}
.skip-link {
  position: fixed;
  top: -60px;
  left: 16px;
  background: white;
  padding: 12px;
  z-index: 50;
}
.skip-link:focus {
  top: 10px;
}
.shell {
  max-width: 1080px;
  margin: auto;
  padding: 0 40px;
}
.site-header {
  height: 104px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: transparent;
  padding: 0;
  text-decoration: none;
}
.brand img {
  width: 42px;
  height: 48px;
  object-fit: contain;
}
.brand-word {
  font-family: ui-rounded, "Noto Sans TC", sans-serif;
  font-size: 25px;
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--purple-deep);
}
.brand-dot {
  color: #e3a076;
}
.home {
  padding: 26px 0 0;
}
.eyebrow {
  font-size: 12px;
  color: var(--purple-deep);
  letter-spacing: 2px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 9px;
}
.eyebrow:before {
  content: "";
  height: 7px;
  width: 7px;
  background: var(--orange);
  border-radius: 50%;
}
.welcome {
  margin-bottom: 31px;
}
.welcome h1 {
  font-size: 36px;
  letter-spacing: -1.3px;
  line-height: 1.55;
  font-weight: 700;
  margin: 12px 0 10px;
}
.welcome p {
  font-size: 14px;
  line-height: 1.9;
  color: var(--muted);
}
.primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  background: var(--orange);
  color: var(--orange-ink);
  border: 1px solid #e8a477;
  border-radius: 14px;
  padding: 14px 22px;
  min-height: 50px;
  font-size: 14px;
  font-weight: 700;
  transition:
    background 0.15s,
    transform 0.15s;
}
.primary:hover {
  background: #f1a676;
  transform: translateY(-1px);
}
.primary:active {
  transform: translateY(0);
}
.primary:disabled {
  background: #eee9f1;
  border-color: #e5dfea;
  color: #9a90a2;
  transform: none;
}
.gentle-note {
  margin: 34px 0 0;
  padding: 19px 22px;
  border-radius: 17px;
  background: var(--aqua);
  display: flex;
  gap: 13px;
  align-items: center;
  font-size: 13px;
  line-height: 1.8;
  color: var(--aqua-ink);
}
.gentle-note svg {
  flex-shrink: 0;
}
.footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  margin-top: 46px;
  padding: 23px 0 25px;
  border-top: 1px solid var(--line);
  font-size: 11px;
  color: var(--muted);
}
.text-button {
  min-height: 44px;
  background: none;
  padding: 8px 0;
  color: var(--purple-deep);
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.text-button:hover {
  text-decoration: underline;
}
.domain-move { margin: 32px 0 0; padding: 20px; border: 1px solid var(--example-border); border-radius: 16px; background: var(--aqua); font-size: 14px; line-height: 1.8; }
.domain-move p { margin: 8px 0; }
.domain-move a { color: var(--aqua-ink); }
.domain-move .text-button { min-height: 44px; }
.lesson-shell {
  max-width: 820px;
  margin: 0 auto;
  padding: 0 36px;
}
.lesson-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 30px;
  height: 72px;
}
.exit {
  background: transparent;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
  padding: 10px 0;
}
.exit:hover {
  color: var(--purple-deep);
}
.lesson-name {
  font-size: 12px;
  color: var(--muted);
}
.lesson-progress {
  display: flex;
  align-items: center;
  gap: 17px;
  margin: 28px 0 33px;
}
.track {
  height: 5px;
  border-radius: 99px;
  background: #e9e3ef;
  overflow: hidden;
  flex: 1;
}
.track span {
  display: block;
  height: 100%;
  background: #ac94ca;
  transition: width 0.3s;
  border-radius: 99px;
}
.step-count {
  font-size: 11px;
  color: var(--muted);
  min-width: 35px;
}
.lesson-main {
  animation: appear 0.22s ease-out;
}
.lesson-title {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -0.7px;
  margin-top: 12px;
}
.lesson-intro {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.9;
  margin-top: 12px;
}
.content-card {
  background: white;
  border: 1px solid var(--line);
  border-radius: 24px;
  margin-top: 27px;
  padding: 30px;
}
.script-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
}
.script-cell {
  text-align: center;
  padding: 23px 8px;
  border-radius: 16px;
  background: #f4eff9;
}
.script-cell:nth-child(2) {
  background: #edf7f9;
}
.script-cell:nth-child(3) {
  background: #fff1e6;
}
.script-cell .character {
  font-family: "Noto Sans JP", sans-serif;
  font-size: 48px;
  line-height: 1.5;
  color: var(--purple-deep);
  font-weight: 500;
}
.script-cell:nth-child(2) .character {
  color: var(--aqua-ink);
}
.script-cell:nth-child(3) .character {
  color: #a96740;
}
.script-cell p {
  font-size: 12px;
  margin-top: 10px;
  color: var(--muted);
}
.mascot-tip {
  display: flex;
  align-items: center;
  gap: 13px;
  margin-top: 22px;
  color: #796986;
  font-size: 13px;
  line-height: 1.8;
}
.mascot-tip img {
  width: 40px;
  height: 46px;
  object-fit: contain;
  flex-shrink: 0;
}
.example-large {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 26px;
  padding: 22px 0 27px;
}
.example-word {
  font-family: "Noto Sans JP", sans-serif;
  font-size: 70px;
  letter-spacing: 8px;
  line-height: 1.3;
  color: var(--purple-deep);
  font-weight: 500;
}
.example-meaning {
  font-size: 14px;
  color: var(--muted);
  line-height: 2;
}
.example-meaning small {
  display: block;
  font-size: 11px;
  letter-spacing: 2px;
}
.word-type {
  background: var(--lilac);
  color: var(--purple-deep);
  display: inline-flex;
  padding: 6px 11px;
  font-size: 11px;
  border-radius: 8px;
  letter-spacing: 1px;
}
.example-aqua .example-word {
  color: var(--aqua-ink);
}
.example-aqua .word-type {
  background: var(--aqua);
  color: var(--aqua-ink);
}
.example-orange .example-word {
  color: #a96740;
}
.example-orange .word-type {
  background: #fff0e3;
  color: #9d633e;
}
.explain {
  border-top: 1px solid var(--line);
  padding-top: 22px;
  color: #6d6376;
  font-size: 14px;
  line-height: 1.9;
}
.explain strong {
  font-weight: 600;
  color: var(--ink);
}
.lesson-navigation {
  margin: 30px 0 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  padding-bottom: 25px;
}
.back-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  font-size: 13px;
  color: var(--muted);
  padding: 13px 5px;
}
.back-button:hover {
  color: var(--ink);
}
.step-hint {
  font-size: 11px;
  color: #766981;
  margin-top: 9px;
}
.next-wrap {
  text-align: right;
}
.question-tag {
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--aqua-ink);
  background: var(--aqua);
  padding: 6px 11px;
  display: inline-flex;
  border-radius: 8px;
}
.question-word {
  font-family: "Noto Sans JP", sans-serif;
  font-size: 58px;
  text-align: center;
  margin: 23px 0 6px;
  letter-spacing: 5px;
  color: var(--purple-deep);
}
.question-note {
  text-align: center;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 26px;
}
.answers {
  display: grid;
  gap: 11px;
}
.answer {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 15px;
  text-align: left;
  background: #fff;
  border: 1.5px solid var(--line);
  border-radius: 15px;
  padding: 17px 18px;
  min-height: 59px;
  font-size: 14px;
  transition:
    border-color 0.15s,
    background 0.15s;
}
.answer:hover:not(:disabled):not([aria-disabled="true"]):not(.wrong):not(.correct) {
  border-color: #b39bcd;
  background: #fbf8ff;
}
.answer .letter {
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  height: 25px;
  width: 25px;
  border-radius: 8px;
  font-size: 11px;
  color: #8d8197;
  flex-shrink: 0;
}
.answer[aria-disabled="true"] {
  cursor: default;
}
.answer.correct {
  border-color: #8bb8b6;
  background: #eef8f6;
}
.answer.correct .letter {
  background: #5d8d86;
  border-color: #5d8d86;
  color: white;
}
.answer.wrong {
  border-color: #dca37f;
  background: #fff5ed;
}
.answer-status {
  margin-left: auto;
  flex-shrink: 0;
  white-space: nowrap;
  font-size: 12px;
  color: var(--aqua-ink);
}
.feedback {
  margin-top: 17px;
  border-radius: 15px;
  padding: 15px 18px;
  font-size: 13px;
  line-height: 1.85;
  background: #edf7f6;
  color: #426c64;
}
.feedback.wrong {
  background: #fff2e7;
  color: #8c5a3b;
}
.feedback strong {
  display: block;
  font-weight: 600;
  margin-bottom: 3px;
}
.feedback:empty {
  display: none;
}
.quiz-card {
  padding: 25px 30px;
}
.finish {
  max-width: 610px;
  text-align: center;
  margin: 10px auto 0;
}
.finish-art {
  height: 170px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.finish-art:before {
  content: "";
  width: 155px;
  height: 155px;
  background: var(--lilac);
  border-radius: 50%;
  position: absolute;
}
.finish-art img {
  height: 160px;
  width: 160px;
  object-fit: contain;
  z-index: 1;
}
.finish-art .finish-check {
  position: absolute;
  left: calc(50% + 55px);
  bottom: 14px;
  background: var(--orange);
  color: var(--orange-ink);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  z-index: 2;
  border: 3px solid var(--paper);
}
.finish .eyebrow {
  justify-content: center;
  margin-top: 25px;
}
.finish h1 {
  font-size: 30px;
  line-height: 1.6;
  margin: 10px 0;
}
.finish > p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.9;
}
.summary {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 9px;
  margin: 25px 0;
}
.summary span {
  white-space: nowrap;
  border: 1px solid var(--line);
  background: white;
  border-radius: 12px;
  font-size: 13px;
  padding: 11px 14px;
}
.summary b {
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 500;
}
.finish .primary {
  min-width: 220px;
}
.finish-actions {
  display: flex;
  align-items: center;
  flex-direction: column;
  gap: 12px;
}
.storage-note {
  font-size: 11px;
  color: var(--muted);
  line-height: 1.8;
  margin-top: 20px;
}
.storage-warning {
  margin: 18px 0;
  background: #fff2e7;
  padding: 12px 16px;
  border-radius: 12px;
  font-size: 12px;
  color: #8c5a3b;
}
/* A stale tab stops saving; keep that notice and its reload button on screen. */
#storage-status:has(.storage-conflict) {
  position: sticky;
  bottom: 8px;
  z-index: 5;
}
.storage-conflict {
  border: 1px solid #e4b393;
  box-shadow: 0 6px 18px rgba(80, 60, 100, 0.12);
}
.focus-heading:focus {
  outline: none;
}
@keyframes appear {
  from {
    opacity: 0;
    transform: translateY(5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@media (min-width: 1300px) {
  .shell {
    max-width: 1080px;
  }
  .home {
    padding-top: 40px;
  }
  .site-header {
    height: 108px;
  }
}
@media (max-width: 740px) {
  .shell {
    padding: 0 24px;
  }
  .site-header {
    height: 72px;
  }
  .brand-word {
    font-size: 23px;
  }
  .brand img {
    width: 35px;
    height: 41px;
  }
  .home {
    padding-top: 10px;
  }
  .welcome {
    margin-bottom: 22px;
  }
  .welcome h1 {
    font-size: 27px;
    margin-top: 10px;
    margin-bottom: 8px;
  }
  .welcome p {
    font-size: 13px;
    line-height: 1.75;
  }
  .gentle-note {
    margin-top: 24px;
    padding: 16px;
    font-size: 12px;
  }
  .footer {
    margin-top: 30px;
    font-size: 10px;
    align-items: flex-start;
  }
  .lesson-shell {
    padding: 0 22px;
  }
  .lesson-header {
    padding-top: 15px;
    height: 62px;
  }
  .lesson-name {
    font-size: 11px;
  }
  .lesson-progress {
    margin: 20px 0 26px;
  }
  .lesson-title {
    font-size: 26px;
  }
  .lesson-intro {
    font-size: 13px;
  }
  .content-card {
    padding: 20px;
    margin-top: 23px;
    border-radius: 20px;
  }
  .script-row {
    gap: 9px;
  }
  .script-cell {
    padding: 19px 4px;
  }
  .script-cell .character {
    font-size: 38px;
  }
  .script-cell p {
    font-size: 11px;
  }
  .mascot-tip {
    font-size: 12px;
    gap: 10px;
  }
  .example-large {
    gap: 17px;
    padding: 26px 0;
  }
  .example-word {
    font-size: 56px;
    letter-spacing: 5px;
  }
  .example-meaning {
    font-size: 12px;
  }
  .explain {
    font-size: 13px;
  }
  .lesson-navigation {
    margin-top: 24px;
  }
  .primary {
    font-size: 13px;
    padding: 13px 18px;
    gap: 15px;
  }
  .question-word {
    font-size: 48px;
    margin-top: 19px;
  }
  .answer {
    padding: 15px;
    font-size: 13px;
  }
  .feedback {
    font-size: 12px;
  }
  .finish {
    margin-top: 20px;
  }
  .finish h1 {
    font-size: 27px;
  }
  .finish > p {
    font-size: 13px;
  }
  .summary {
    gap: 7px;
  }
  .summary span {
    font-size: 12px;
    padding: 10px 11px;
  }
}
@media (prefers-reduced-motion: reduce) {
  *,
  *:before,
  *:after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

/* Quiet secondary tools keep the lesson as the primary path. */
.quiet-links { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.footer .text-button { font-size: 12px; min-height: 44px; }
.lesson-utilities { display: flex; flex-wrap: wrap; justify-content: center; gap: 0 24px; margin-top: 24px; }
.lesson-utilities .text-button { font-size: 12px; color: var(--muted); min-height: 44px; }
.utility-main { max-width: 650px; margin: 38px auto 60px; }
.utility-main h1 { font-size: 32px; margin: 12px 0; letter-spacing: -.6px; }
.utility-intro { color: var(--muted); line-height: 1.8; margin-bottom: 22px; font-size: 15px; }
.record-note { font-size: 12px; color: var(--muted); line-height: 1.9; margin: 14px 0; }
.history-list { list-style: none; padding: 0; margin: 24px 0; display: grid; gap: 14px; }
.history-list li { background: white; border: 1px solid var(--line); border-radius: 20px; padding: 23px 25px; }
.record-top { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 7px 16px; font-size: 12px; color: var(--muted); }
.history-list h2 { font-size: 16px; font-weight: 500; margin: 16px 0 7px; }
.history-list h2 strong { color: var(--purple-deep); font-size: 23px; padding: 0 3px; }
.history-list li > p { font-size: 13px; color: var(--aqua-ink); line-height: 1.8; }
.empty-record { border-radius: 24px; padding: 30px; background: var(--lilac); margin: 24px 0; }
.empty-record h2 { font-size: 19px; margin: 14px 0 10px; }
.empty-record p { font-size: 14px; line-height: 1.9; margin-bottom: 24px; }
.result-card { border-radius: 20px; background: var(--aqua); text-align: left; max-width: 480px; margin: 24px auto; padding: 20px 25px; }
.result-card > span { font-size: 11px; color: var(--aqua-ink); }
.result-card > strong { display: block; font-size: 18px; margin: 8px 0; }
.result-card p { font-size: 13px; line-height: 1.9; color: var(--aqua-ink); }
.result-card .text-button { font-size: 12px; margin-top: 5px; min-height: 44px; }
.clear-button { font-size: 12px; color: var(--muted); margin-top: 14px; min-height: 44px; }
.clear-confirm, .recovery-panel { background: var(--yellow); padding: 18px 22px; border-radius: 16px; margin-top: 25px; font-size: 13px; line-height: 1.9; }
.clear-confirm .text-button, .recovery-panel .text-button { min-height: 44px; }
.recovery-panel p { margin: 0 0 8px; }
.backup-panel { margin-top: 25px; padding: 18px 22px; border-radius: 16px; background: white; border: 1px solid var(--line); font-size: 13px; line-height: 1.9; }
.backup-panel h2 { font-size: 16px; margin: 0 0 4px; }
.backup-panel p { margin: 0; }
.file-button { position: relative; display: inline-flex; align-items: center; min-height: 44px; cursor: pointer; }
.file-button input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.file-button:focus-within { outline: 2px solid var(--purple-deep); outline-offset: 2px; }
#backup-status:empty { display: none; }
.recovery-panel summary { min-height: 44px; display: list-item; align-content: center; cursor: pointer; color: var(--muted); }
.raw-data { width: 100%; font: 12px/1.5 ui-monospace, monospace; }
.feedback-form { background: white; border: 1px solid var(--line); border-radius: 24px; padding: 28px; }
.feedback-form label { display: block; font-size: 14px; font-weight: 500; margin-bottom: 10px; }
.feedback-form select, .feedback-form textarea { display: block; width: 100%; color: var(--ink); background: var(--paper); border: 1px solid #c3b5d2; border-radius: 12px; font: inherit; font-size: 16px; padding: 12px 14px; }
.feedback-form textarea { resize: vertical; min-height: 145px; line-height: 1.8; }
.feedback-form select { margin-bottom: 24px; }
.feedback-form :is(select,textarea):focus-visible { outline: 3px solid var(--purple); outline-offset: 3px; }
.feedback-form textarea::placeholder { color: var(--muted); }
.feedback-privacy { margin: 20px 0 24px; background: var(--aqua); color: var(--aqua-ink); padding: 15px 17px; border-radius: 12px; font-size: 12px; line-height: 1.9; }
#feedback-ready:not(:empty) { border-top: 1px solid var(--line); padding-top: 20px; margin-top: 20px; font-size: 13px; line-height: 1.8; }
#feedback-ready a { min-height: 44px; }
@media (max-width: 500px) {
  .utility-main { margin-top: 26px; }
  .utility-main h1 { font-size: 28px; }
  .feedback-form { padding: 20px; }
  .history-list li { padding: 20px; }
  .empty-record { padding: 24px; }
  .result-card { padding: 19px; }
  .quiet-links { gap: 18px; }
}

/* Shared learning views. */
.aqua-label { color: var(--aqua-ink); background: var(--aqua); }
.study-main { max-width: 680px; margin: 30px auto 55px; }
.study-main h1 { font-size: 29px; line-height: 1.6; letter-spacing: -.5px; margin: 12px 0; }
.study-main > p { color: var(--muted); font-size: 15px; line-height: 1.9; }
.study-main .eyebrow { font-size: 12px; }
.study-card { background: white; border: 1px solid var(--line); border-radius: 26px; padding: 32px; margin-top: 24px; }
.study-card h2 { font-size: 21px; line-height: 1.8; margin-bottom: 18px; }
.study-card p { font-size: 15px; line-height: 1.95; }
.kana-character { font-family: "Noto Sans JP", sans-serif; font-size: 112px; font-weight: 500; line-height: 1.6; text-align: center; color: var(--purple-deep); }
.reading-label { text-align: center; font-size: 28px; font-weight: 500; color: var(--aqua-ink); letter-spacing: 2px; margin: 2px 0 20px; }
.study-note { font-size: 15px; line-height: 1.9; color: var(--muted); margin: 18px 0; }
.study-note:not(p) { padding: 15px 19px; border-radius: 14px; background: var(--aqua); color: var(--aqua-ink); }
.script-tabs { display: flex; gap: 6px; padding: 5px; border-radius: 16px; background: var(--lilac); margin: 24px 0; }
.script-tabs button { flex: 1; padding: 12px; background: none; border-radius: 12px; font-size: 14px; min-height: 46px; }
.script-tabs button[aria-pressed="true"], .script-tabs button[aria-selected="true"] { background: white; box-shadow: 0 2px 5px #6750830c; color: var(--purple-deep); font-weight: 600; }
.course-list { display: grid; gap: 12px; padding: 0; margin: 24px 0; list-style: none; }
.course-list-heading { font-size: 18px; margin: 32px 0 0; }
/* Grammar units open and close; a closed unit still says what it teaches and how far the learner is. */
.unit-section { margin-top: 14px; }
.unit-section > summary { cursor: pointer; padding: 14px 18px; border: 1px solid var(--line); border-radius: 18px; background: var(--white); list-style-position: inside; }
.unit-section > summary:focus-visible { outline: 3px solid var(--purple); outline-offset: 3px; }
.unit-section[open] > summary { border-color: var(--purple); }
/* An inline heading keeps the disclosure marker on the same line as the unit name. */
.unit-title { display: inline; margin: 0; font-size: 17px; font-weight: 700; line-height: 1.5; }
.unit-goal, .unit-count { display: block; margin-top: 4px; font-size: 13px; color: var(--muted); line-height: 1.7; }
.unit-count { font-size: 12px; }
.unit-section > .course-list { margin-top: 10px; }
.grammar-options .answer { display: block; }
.option-reading { display: block; font-size: 14px; font-weight: 400; color: var(--muted); letter-spacing: 0.5px; }
.course-list-heading + .study-note { margin: 8px 0 0; }
.course-row { background: white; border: 1px solid var(--line); border-radius: 18px; padding: 19px 22px; display: flex; gap: 20px; align-items: center; justify-content: space-between; text-align: left; }
.course-row > div, .course-row > span:first-child { min-width: 0; }
.course-row h2, .course-row h3 { font-size: 16px; margin-bottom: 7px; font-weight: 600; line-height: 1.65; }
.course-row p { font-size: 12px; color: var(--muted); line-height: 1.8; }
.course-row [lang="ja"] { font-family: "Noto Sans JP", sans-serif; }
.course-row button { flex-shrink: 0; min-height: 44px; }
.course-state { font-size: 11px; line-height: 1.8; color: var(--aqua-ink); display: block; margin-top: 6px; }
.study-options { display: grid; gap: 11px; margin: 22px 0; }
/* Short kana choices use the available width; four choices form an even 2×2 grid. */
.study-options.kana-options { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.study-options.kana-options:has(> button:nth-child(4):last-child) { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.study-options button { border: 1px solid #d7cce2; padding: 17px 20px; border-radius: 14px; background: var(--white); text-align: left; min-height: 56px; font-size: 16px; line-height: 1.8; }
.study-options button:hover:not([aria-disabled="true"]):not(.wrong):not(.correct) { background: var(--paper); border-color: var(--purple); }
.study-options button.correct { background: var(--aqua); color: var(--aqua-ink); border-color: #a3c8d0; }
.study-options button.wrong { background: #fff0e5; border-color: #e4b393; }
.study-options button[aria-disabled="true"] { cursor: default; }
.study-feedback { margin-top: 18px; border-radius: 14px; background: var(--aqua); color: var(--aqua-ink); padding: 18px 20px; font-size: 14px; line-height: 1.9; }
.study-feedback:empty { display: none; }
.study-feedback.wrong { background: #fff0e5; color: var(--orange-ink); }
.study-feedback strong { display: block; margin-bottom: 5px; }
.study-nav { display: flex; justify-content: space-between; align-items: center; gap: 15px; margin-top: 25px; }
.study-nav a { text-decoration: none; }
.study-main .primary:disabled { opacity: .5; transform: none; }
.study-result { background: var(--aqua); border-radius: 20px; padding: 24px; margin: 24px 0; }
.study-result h2 { font-size: 22px; margin: 10px 0; }
.study-result p { font-size: 14px; line-height: 1.9; }
.study-main ruby { ruby-position: over; }
.study-main rt { font-size: 11px; color: var(--muted); }
@media (max-width: 600px) {
  .study-main { margin-top: 24px; }
  .study-main h1 { font-size: 25px; }
  .study-card { padding: 23px 20px; border-radius: 22px; }
  .kana-character { font-size: 94px; }
  .course-row { padding: 17px; gap: 10px; }
  .course-row h2, .course-row h3 { font-size: 15px; }
  .study-options button { padding: 14px 17px; font-size: 15px; }
  .study-nav { gap: 9px; }
  .study-nav .primary { padding: 12px 16px; gap: 10px; }
}
.course-row > span:first-child { min-width: 0; }
.course-row .reading-label { display: block; font-size: 19px; letter-spacing: 0; text-align: left; margin: 8px 0 0; line-height: 1.7; }
.course-row .course-state { flex-shrink: 0; max-width: 100px; text-align: right; }
.course-row strong { font-size: 15px; }
.study-main > .reading-label { font-size: 12px; letter-spacing: 0; text-align: left; }
.study-card:has(.kana-character) { text-align: center; }
.study-card > span.reading-label { display: block; font-size: 11px; letter-spacing: 0; color: var(--muted); margin: 0; }
.study-card > p.reading-label, .study-result .reading-label { font-size: 13px; letter-spacing: 0; text-align: left; }
.study-card .grammar-example { font-family: "Noto Sans JP", sans-serif; color: var(--purple-deep); font-size: 27px; line-height: 1.9; margin: 23px 0 8px; }
.lesson-header a.exit { text-decoration: none; }
.study-audio-status { min-height: 23px; }
/* Speaker buttons: 44px to tap; playing shows as a thicker dark ring as well as a colour. */
.audio-button { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; margin: 6px 0 2px; padding: 0; border: 1px solid var(--line); border-radius: 50%; background: var(--white); color: var(--purple-deep); transition: background-color .15s, transform .1s; }
@media (hover: hover) { .audio-button:hover { background: var(--lilac); } }
.audio-button:active { transform: scale(.94); }
.audio-button:focus-visible { outline-offset: 3px; }
.audio-button.playing { border: 3px solid var(--aqua-ink); background: var(--aqua); color: var(--aqua-ink); }
@media (max-width: 400px) {
  .course-row .reading-label { font-size: 16px; }
  .course-row .course-state { max-width: 80px; font-size: 10px; }
  .study-card .grammar-example { font-size: 23px; }
}
.word-examples .character { font-size: clamp(26px, 5vw, 44px); letter-spacing: 0; line-height: 1.8; }
.word-examples .script-cell strong { font-size: 14px; font-weight: 500; }
.word-examples .script-cell p { font-size: 11px; margin-top: 10px; }

/* Travel cards keep the useful words visible before the longer phrasing. */
.keyword-box { background: var(--aqua); border-radius: 16px; padding: 18px; margin: 16px 0 24px; }
.keyword-box h3, .phrase-label { font-size: 12px; color: var(--aqua-ink); margin: 0 0 12px; }
.keyword-box dl { margin: 0; }
.keyword-box dl > div { display: grid; grid-template-columns: minmax(0, 1fr) minmax(72px, .7fr); gap: 12px; align-items: center; }
.keyword-box dl > div + div { border-top: 1px solid #b9d9df; margin-top: 12px; padding-top: 12px; }
.keyword-box dt strong { display: block; font-size: 18px; line-height: 1.7; }
.keyword-box dt span { display: block; color: var(--aqua-ink); font-size: 14px; line-height: 1.8; overflow-wrap: anywhere; }
.keyword-box dd { margin: 0; font-size: 14px; line-height: 1.8; }
.phrase-more { border-top: 1px solid var(--line); padding-top: 12px; margin-top: 16px; }
.phrase-more summary { cursor: pointer; color: var(--purple-deep); font-size: 14px; padding: 8px 0; min-height: 44px; }
.phrase-more p[lang="ja"] { font-size: 19px; color: var(--purple-deep); margin-top: 10px; }
.phrase-more .reading-label { font-size: 12px; text-align: left; letter-spacing: 0; margin: 4px 0; overflow-wrap: anywhere; }
@media (max-width: 400px) { .keyword-box { padding: 14px; } .keyword-box dt strong { font-size: 16px; } }

/* Travel search: a plain box above the list; results reuse the home rows. 16px keeps phones from zooming in. */
.travel-search { display: grid; gap: 6px; margin: 22px 0 4px; }
.travel-search label { font-size: 14px; font-weight: 600; }
.travel-search input { width: 100%; min-height: 48px; padding: 10px 14px; border: 1px solid #9a88b3; border-radius: 14px; background: var(--white); color: var(--ink); font: inherit; font-size: 16px; }
.travel-search input:focus-visible { outline: 3px solid var(--purple); outline-offset: 2px; }
.travel-results { margin: 14px 0 6px; }
.travel-results h2 { font-size: 16px; margin: 0 0 4px; }
.travel-results h2:focus { outline: none; }
.travel-results-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 0 12px; }
.travel-results-head .text-button { min-height: 44px; font-size: 13px; }
/* Travel situations in a few groups: a heading with a coloured strip and a plain Chinese line mark each group. */
.travel-groups { display: grid; gap: 26px; margin: 24px 0; }
.travel-group { --tone: var(--purple); }
.travel-group.tone-apricot { --tone: #c4723c; }
.travel-group.tone-aqua { --tone: var(--aqua-ink); }
.travel-group.tone-rose { --tone: #b0567a; }
.travel-group > h2 { font-size: 17px; margin: 0; padding-left: 10px; border-left: 4px solid var(--tone); line-height: 1.4; }
.travel-group > p { font-size: 13px; color: var(--muted); margin: 4px 0 12px 14px; }
.travel-categories { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.travel-words { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.travel-word { display: inline-flex; flex-wrap: wrap; align-items: baseline; gap: 6px; max-width: 100%; padding: 3px 10px; border-radius: 999px; background: var(--paper); border: 1px solid var(--line); font-size: 13px; color: var(--ink); overflow-wrap: anywhere; }
.travel-word [lang="ja"] { font-family: "Noto Sans JP", sans-serif; color: var(--muted); }
.travel-categories a { text-decoration: none; color: inherit; }
.travel-categories .reading-label { font-size: 13px; color: var(--muted); }
.travel-card h2 { font-size: 19px; }
.travel-card .keyword-box { margin-bottom: 12px; }
.travel-card .study-note { margin: 12px 0; }
.travel-entry { border-color: #e5cbb8; }
.script-supplement { margin-top: 18px; padding: 12px 8px; display: flex; flex-wrap: wrap; align-items: center; column-gap: 20px; font-size: 13px; color: var(--muted); }
@media (max-width: 600px) { .travel-categories { grid-template-columns: 1fr; } }

:lang(ja) { font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif; }
/* Wrapping keeps small ゃゅょっ and ー with the kana before them. */
html { line-break: strict; }
/* Example sentences break at the spaces between words, not inside a word. */
.study-card .grammar-example { word-break: keep-all; overflow-wrap: anywhere; }
.course-row .reading-label:not([lang="ja"]) { font-size: 13px; color: var(--muted); }
.study-options .answer-status:empty { display: none; }
.study-options .wrong .answer-status { color: var(--orange-ink); }
.study-options .answer-status { display: block; font-size: 12px; line-height: 1.5; margin: 3px 0 0; }
@media (max-width: 600px) {
  .study-quiz { padding: 18px 16px; margin-top: 16px; }
  .study-quiz .kana-character { font-size: 64px; line-height: 1.3; }
  .study-quiz .reading-label { font-size: 24px; margin-bottom: 10px; }
  .study-quiz .kana-options { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin: 14px 0; }
  .study-quiz .kana-options button { display: flex; flex-direction: column; gap: 2px; justify-content: center; align-items: center; min-height: 52px; padding: 8px 5px; text-align: center; }
  .study-quiz .study-feedback { margin-top: 12px; padding: 12px; }
}

.study-result .study-nav { flex-wrap: wrap; }

.intro-entry { margin: 18px 0 0; padding: 16px 22px; border: 1px solid var(--line); border-radius: 18px; }
.intro-entry p { color: var(--muted); font-size: 13px; line-height: 1.8; margin: 4px 0; }

.study-review-entry { padding: 18px 20px; background: var(--aqua); border: 1px solid var(--line); border-radius: 18px; margin: 24px 0; }
.study-review-entry h2 { font-size: 18px; margin: 0; }
.study-review-entry .study-note { margin: 8px 0; }
.study-review-entry a { min-height: 44px; }
.review-lessons { list-style: none; padding: 0; margin: 4px 0 0; display: grid; gap: 4px; }
.review-lessons .text-button { text-align: left; white-space: normal; }
.study-nav > .primary:only-child { margin-left: auto; }
.kana-hint { text-align: left; padding: 16px 18px; margin: 16px 0 0; border-radius: 16px; background: var(--paper); }
.kana-hint .hint-title { margin: 0 0 8px; font-size: 12px; font-weight: 600; color: var(--purple-deep); }
.hint-list { margin: 0; display: grid; gap: 8px; }
.hint-list > div { display: grid; grid-template-columns: 3.4em minmax(0, 1fr); gap: 0 10px; align-items: baseline; }
.hint-list dt { font-size: 12px; color: var(--muted); }
.hint-list dd { margin: 0; font-size: 15px; line-height: 1.7; }
.hint-list dd:has(.hint-word) { display: flex; flex-wrap: wrap; align-items: center; gap: 0 10px; }
.hint-word { font-family: "Noto Sans JP", sans-serif; font-size: 18px; }
/* The kana being learned is underlined as well as coloured. */
.hint-word mark { background: none; color: var(--purple-deep); font-weight: 700; text-decoration: underline; text-underline-offset: 4px; }
.hint-roman { font-size: 13px; color: var(--muted); }
.hint-list .audio-button { margin: 0; }
.kana-hint details { display: inline-block; vertical-align: middle; margin-left: 18px; }
.kana-hint details[open] { display: block; margin-left: 0; }
.kana-hint summary { min-height: 44px; display: list-item; align-content: center; cursor: pointer; font-size: 12px; color: var(--muted); }
.kana-hint details p { font-size: 12px; margin-bottom: 0; }
.author-credit { display: inline-block; color: var(--muted); font-size: 11px; padding: 12px 0; }
.footer .quiet-links { flex-wrap: wrap; }
.info-page { max-width: 680px; }
.info-section { margin: 22px 0; padding: 20px 22px; border: 1px solid var(--line); border-radius: 18px; background: white; }
.info-section h2 { font-size: 17px; font-weight: 600; line-height: 1.8; }
.info-section p { font-size: 15px; line-height: 1.95; color: var(--muted); }
.info-section .author-name { color: var(--purple-deep); font-weight: 600; }
.info-section .text-button { min-height: 44px; }
@media (max-width: 600px) {
  .study-card:has(.kana-hint) { padding: 18px; margin-top: 16px; }
  .study-card:has(.kana-hint) .kana-character { font-size: 76px; line-height: 1.3; }
  .study-card:has(.kana-hint) > div.reading-label { font-size: 22px; margin-bottom: 10px; }
  .study-audio-status:empty { display: none; }
  .kana-hint { margin-top: 12px; padding: 12px 14px; }
  .footer { align-items: flex-start; flex-direction: column; gap: 8px; }
  .footer .quiet-links { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); width: 100%; column-gap: 16px; row-gap: 4px; justify-items: start; }
}

/* Accessibility floor (#15): readable sizes, 44px targets, contrast, clear disabled states. */
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.exit, .brand, .author-credit { min-height: 44px; display: inline-flex; align-items: center; }
.lesson-name, .author-credit, .step-count, .footer span, .study-card > span.reading-label, .script-cell p, .word-examples .script-cell p, .storage-note, .step-hint, .question-tag, .result-card > span, .word-type { font-size: 12px; }
.course-state, .course-row .course-state { font-size: 12px; }
.storage-warning, .feedback-privacy, .study-feedback, .phrase-more .reading-label, .travel-categories .reading-label, .study-card > p.reading-label, .study-result .reading-label { font-size: 14px; }
.feedback { font-size: 14px; }
.course-subtitle { display: block; font-size: 13px; color: var(--muted); margin-top: 6px; line-height: 1.7; }
.answer .letter { color: var(--muted); }
.example-orange .word-type { color: #8c5a3b; }
.feedback-form select, .feedback-form textarea { border-color: var(--purple); }
button.text-button:disabled { color: var(--muted); opacity: .55; text-decoration: none; cursor: default; }
.study-main .primary:disabled { opacity: 1; }
summary:focus-visible { outline: 3px solid var(--purple); outline-offset: 3px; border-radius: 6px; }

/* Travel additions (#16) */
.header-link { min-height: 44px; display: inline-flex; align-items: center; font-size: 13px; color: var(--purple-deep); white-space: nowrap; }
.staff-asks { display: grid; gap: 2px; margin: 14px 0 0; padding: 12px 14px; border-radius: 12px; background: var(--aqua); color: var(--aqua-ink); font-size: 14px; line-height: 1.7; }
.staff-asks-label { font-size: 12px; font-weight: 600; }
.staff-asks [lang="ja"] { font-size: 16px; color: var(--ink); }
.staff-asks-reading { font-size: 14px; }
.kw-kana { white-space: nowrap; }
.phrase-short { margin: 14px 0 0; }
.phrase-short p[lang="ja"] { font-size: 20px; color: var(--purple-deep); margin: 4px 0 0; }
.phrase-short p { margin: 2px 0; }
.phrase-short .reading-label { font-size: 14px; text-align: left; letter-spacing: 0; margin: 2px 0; }
.travel-card .text-button + .reading-label { display: inline-block; margin: 0 0 0 10px; font-size: 12px; color: var(--muted); letter-spacing: 0; }
.travel-card .study-nav, .study-main > .study-nav { flex-wrap: wrap; }
.study-nav > * { white-space: nowrap; }
.study-result .study-nav > * { white-space: normal; text-align: left; }

/* Home: four illustrated entries are the primary navigation. */
.home-header { height: 72px; border-bottom: 1px solid var(--line); }
.home { padding-top: 18px; }
.home .welcome { margin-bottom: 16px; }
.home .welcome h1 { font-size: 30px; margin: 0 0 8px; }
@media (hover: hover) {
  .travel-entry:hover { border-color: var(--orange-ink); }
}
.grammar-entry .text-button { color: var(--aqua-ink); }
.travel-entry { background: #fff3e9; border-color: #f2dfd0; }
.travel-entry .text-button { color: var(--orange-ink); }
.home .script-supplement { margin-top: 22px; padding: 12px 0; border: 0; border-top: 1px solid var(--line); border-radius: 0; gap: 0 16px; }
.home .script-supplement p { margin: 0; font-size: 12px; }
.home .gentle-note { margin-top: 12px; padding: 0; background: none; gap: 8px; color: var(--muted); font-size: 12px; }
.home .gentle-note svg { width: 17px; height: 17px; }
@media (max-width: 740px) {
  .home-header { height: 72px; }
  .home { padding-top: 20px; }
}

@media (max-width: 540px) {
  .home .welcome h1 { font-size: 26px; }
  .home .welcome { margin-bottom: 18px; }
}

/* About: the origin story and original cloud mascot. */
.info-section h2 + p { margin-top: 8px; }
.info-section p + p { margin-top: 12px; }
.about-mascot { display: block; width: 150px; height: auto; margin: 24px auto 0; }
@media (max-width: 540px) {
  .about-mascot { width: 120px; }
}

/* Local travel bookmarks share the existing cards and keep the title readable on narrow screens. */
.travel-card-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.travel-card-heading h2 { min-width: 0; }
.favorite-toggle { flex-shrink: 0; min-height: 44px; }
.favorite-toggle[aria-pressed="true"] { color: var(--purple-deep); background: var(--purple-soft, #f1eafa); border-radius: 12px; padding-inline: 12px; }
.favorites-entry { margin-top: 20px; text-decoration: none; color: inherit; }
.favorites-count { flex-shrink: 0; font-size: 13px; color: var(--muted); }
/* Returning learners: progress and continuation tools below the three illustrated entries. */
.home-dashboard { display: grid; grid-template-columns: minmax(0, 1fr) 300px; grid-template-areas: "next side" "all side"; gap: 26px 32px; align-items: start; margin-top: 28px; }
.home-dashboard h2 { font-size: 18px; margin: 0 0 10px; }
.dash-next { grid-area: next; }
.dash-tools { grid-area: all; }
.dash-progress { grid-area: side; padding: 20px 22px 18px; background: var(--white); border: 1px solid var(--line); border-radius: 24px; }
.dash-units { margin-top: 18px; }
.dash-units summary { cursor: pointer; font-size: 14px; font-weight: 700; color: var(--purple-deep); padding: 11px 0; }
.dash-units .dash-bars { margin-top: 6px; }
.dash-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 12px; margin: 12px 0 0; }
.dash-stats dt { font-size: 13px; color: var(--muted); }
.dash-stats dd { margin: 2px 0 0; font-size: 13px; color: var(--muted); }
.dash-stats strong { font-size: 26px; line-height: 1.2; color: var(--purple-deep); margin-right: 2px; font-variant-numeric: tabular-nums; }
.dash-bars { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.dash-bars li { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 4px 8px; font-size: 13px; }
.dash-count { color: var(--muted); font-size: 13px; font-variant-numeric: tabular-nums; }
.dash-bar { grid-column: 1 / -1; height: 6px; border-radius: 3px; background: var(--lilac); overflow: hidden; }
.dash-bar i { display: block; height: 100%; border-radius: 3px; background: var(--purple); }
.dash-note { margin: 14px 0 0; font-size: 13px; line-height: 1.7; color: var(--muted); }
.dash-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.dash-list li { border-bottom: 1px solid var(--line); }
.dash-row { width: 100%; min-height: 60px; display: grid; grid-template-columns: minmax(0, 1fr) auto auto; grid-template-areas: "main meta icon"; align-items: center; column-gap: 12px; padding: 12px 4px; border: 0; background: none; color: inherit; text-align: left; text-decoration: none; font: inherit; }
.dash-row-main { grid-area: main; min-width: 0; display: grid; gap: 2px; }
.dash-row-main strong { font-size: 15px; }
.dash-row-main span { font-size: 13px; line-height: 1.6; color: var(--muted); }
.dash-row-meta { grid-area: meta; font-size: 13px; color: var(--muted); white-space: nowrap; }
.dash-row svg { grid-area: icon; color: var(--purple-deep); }
.dash-row:focus-visible { outline: 3px solid var(--purple); outline-offset: 2px; border-radius: 12px; }
@media (hover: hover) { .dash-row:hover strong { text-decoration: underline; } }
@media (max-width: 860px) { .home-dashboard { grid-template-columns: minmax(0, 1fr); grid-template-areas: "next" "side" "all"; margin-top: 22px; } }
@media (max-width: 600px) { .dash-row { grid-template-columns: minmax(0, 1fr) auto; grid-template-areas: "main icon" "meta icon"; row-gap: 2px; } .dash-row-meta { justify-self: start; } }
@media (max-width: 400px) { .dash-progress { padding: 18px 16px 16px; } .dash-stats strong { font-size: 23px; } .dash-row { column-gap: 10px; } }

.lesson-shell.lesson-wide { max-width: 1080px; }
.lesson-wide .study-main { max-width: 960px; }

/* Learning blocks: aqua for examples, lilac for explanation, apricot for the next action. */
.lesson-phases { display: flex; gap: 10px; list-style: none; padding: 0; margin: 16px 0 20px; }
.lesson-phases li { display: flex; align-items: center; gap: 7px; border: 1px solid var(--line); border-radius: 12px; padding: 8px 12px; background: white; color: var(--muted); font-size: 14px; }
.lesson-phases li span { display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: var(--paper); font-size: 12px; }
.lesson-phases [aria-current="step"] { border: 2px solid #a58bbf; padding: 7px 11px; background: var(--lilac); color: var(--purple-deep); font-weight: 700; }
.lesson-phases [aria-current="step"] span { background: var(--purple-deep); color: white; }
.study-card.lesson-card { padding: 0; border: 0; background: transparent; }
.lesson-blocks { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 16px; align-items: start; }
.lesson-example, .lesson-rule { min-width: 0; padding: 22px; border-radius: 20px; border: 2px solid; overflow-wrap: anywhere; }
.lesson-example { background: var(--aqua); border-color: var(--example-border); }
.lesson-rule { background: var(--lilac); border-color: var(--rule-border); }
.lesson-blocks h3 { font-size: 14px; line-height: 1.6; margin: 0 0 14px; }
.lesson-example h3 { color: var(--aqua-ink); }
.lesson-rule h3 { color: var(--purple-deep); }
.study-card .lesson-example .grammar-example { color: var(--ink); font-size: 26px; line-height: 1.8; margin: 0 0 8px; }
.lesson-example .example-reading { color: var(--aqua-ink); font-size: 15px; line-height: 1.7; letter-spacing: .3px; }
.lesson-example .example-meaning { font-size: 16px; margin: 16px 0; padding-top: 14px; border-top: 1px solid #a8ccd4; }
.lesson-rule p { font-size: 16px; line-height: 1.9; }
.lesson-example .audio-button { background: white; border: 1px solid var(--example-border); }
.lesson-example .study-audio-status:empty { display: none; }
.kana-hint { background: var(--lilac); border: 2px solid var(--rule-border); }
.hint-list > div + div { border-top-color: #cbbada; }
.keyword-box { border: 2px solid var(--example-border); }
@media (max-width: 600px) {
  .lesson-blocks { grid-template-columns: minmax(0, 1fr); gap: 14px; }
  .lesson-example, .lesson-rule { padding: 20px; border-radius: 16px; }
  .lesson-phases { gap: 6px; }
  .lesson-phases li { gap: 5px; padding: 7px 8px; font-size: 13px; }
  .lesson-phases [aria-current="step"] { padding: 6px 7px; }
  .lesson-phases li span { width: 19px; height: 19px; }
}

.example-parts { display: flex; flex-wrap: wrap; gap: 10px; }
.example-part { display: grid; justify-items: center; align-content: start; gap: 6px; padding: 12px; background: white; border: 1px solid #b2d1d8; border-radius: 12px; }
.example-part [lang="ja"] { font-family: "Noto Sans JP", sans-serif; font-size: 23px; line-height: 1.5; }
.example-part .part-meaning { color: var(--ink); font-size: 14px; line-height: 1.5; }

/* Stable home entries; only the progress below them changes for returning learners. */
.home-shortcuts { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px 20px; padding: 12px 18px; background: var(--lilac); border: 2px solid var(--rule-border); border-radius: 16px; margin: 16px 0; }
.home-shortcuts h2 { font-size: 17px; }
.home-shortcuts p { font-size: 14px; color: var(--muted); line-height: 1.7; margin-top: 3px; }
.quick-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.quick-actions .text-button { background: white; border: 1px solid var(--rule-border); border-radius: 12px; padding: 10px 14px; }
.home-entries { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-bottom: 24px; }
.home-entry { min-width: 0; border: 2px solid var(--line); border-radius: 24px; padding: 24px; background: white; display: flex; flex-direction: column; }
.home-entry.kana-entry { border-color: var(--rule-border); }
.home-entry.grammar-entry { border-color: var(--example-border); }
.home-entry.travel-entry { border-color: #dbaf90; }
.home-entry-art { width: 170px; height: 180px; object-fit: contain; margin: 0 auto 18px; }
.home-entry h2 { font-size: 23px; margin-bottom: 10px; }
.home-entry p { color: var(--muted); font-size: 15px; line-height: 1.8; margin-bottom: 20px; }
.home-entry-copy { flex: 1; min-width: 0; display: flex; flex-direction: column; align-items: start; }
.home-entry .primary { margin-top: auto; padding: 12px 18px; font-size: 15px; }
/* On laptops, illustration and copy share a row so all four entrances stay visible. */
@media (min-width: 900px) {
  .home-entry { flex-direction: row; align-items: center; gap: 18px; padding: 18px; }
  .home-entry-art { width: 128px; height: 144px; flex-shrink: 0; margin: 0; }
  .home-entry h2 { font-size: 22px; margin-bottom: 6px; }
  .home-entry p { line-height: 1.7; margin-bottom: 12px; }
  .home-entry .primary { min-height: 44px; padding: 9px 14px; }
}
@media (max-width: 899px) and (min-width: 601px) {
  .home-entries { gap: 12px; }
  .home-entry { padding: 16px; }
  .home-entry h2 { font-size: 20px; }
  .home-entry-art { width: 112px; height: 120px; margin-bottom: 12px; }
}
@media (max-width: 600px) {
  .home-shortcuts { padding: 18px; }
  .quick-actions { width: 100%; }
  .quick-actions .text-button { width: 100%; justify-content: space-between; }
  .home-entries { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .home-entry { flex-direction: row; align-items: center; padding: 20px 16px; gap: 12px; }
  .home-entry-art { width: 112px; height: 130px; flex-shrink: 0; margin: 0; }
  .home-entry h2 { font-size: 21px; }
  .home-entry p { font-size: 14px; }
  .home-entry .primary { padding: 10px 12px; font-size: 14px; }
}
@media (max-width: 360px) {
  .home-entry { display: grid; grid-template-columns: 80px minmax(0, 1fr); gap: 12px; }
  .home-entry-art { width: 80px; height: 88px; margin: 0; }
  .home-entry-copy { display: contents; }
  .home-entry h2 { grid-column: 2; margin: 0; }
  .home-entry p, .home-entry .primary { grid-column: 1 / -1; margin: 0; }
  .home-entry .primary { justify-self: start; }
}

.overview-header { height: auto; flex-wrap: wrap; gap: 12px; }
.section-nav { flex-basis: 100%; display: flex; flex-wrap: wrap; gap: 8px; padding: 12px 0 4px; }
.section-nav a { min-height: 44px; display: flex; align-items: center; padding: 10px 16px; border: 1px solid var(--line); border-radius: 12px; text-decoration: none; background: white; font-size: 14px; }
.section-nav a[aria-current="page"] { background: var(--lilac); color: var(--purple-deep); border: 2px solid var(--rule-border); padding: 9px 15px; font-weight: 700; text-decoration: underline; text-underline-offset: 5px; }
@media (max-width: 400px) { .section-nav { gap: 6px; } .section-nav a { padding: 10px; } .section-nav a[aria-current="page"] { padding: 9px; } }

/* Answer feedback is distinct from the lilac teaching notes and apricot actions. */
.study-feedback:not(:empty) { padding: 16px 18px; border: 2px solid #81aa9b; border-radius: 14px; background: #edf6f1; color: #315c4a; line-height: 1.8; }
.study-feedback.wrong:not(:empty) { border-color: #c49b9b; background: #fff2f2; color: #763c43; }
.study-options .answer.correct { border-width: 2px; }

/* Supplemental material stays optional; the main example and rule remain visible. */
.example-guide { font-size: 13px; color: var(--aqua-ink); margin: 0 0 16px; }
.lesson-extra, .result-extra, .result-lessons { margin-top: 18px; border-top: 1px solid var(--rule-border); padding-top: 8px; }
.lesson-extra summary, .result-extra summary, .result-lessons summary { min-height: 44px; display: list-item; align-content: center; cursor: pointer; font-size: 14px; font-weight: 600; color: var(--purple-deep); }
.lesson-extra p { margin-top: 10px; }
.result-scope { color: var(--aqua-ink); }
.result-extra .text-button { margin-top: 8px; }
.example-part { max-width: 100%; overflow-wrap: anywhere; }
.lesson-phases { flex-wrap: wrap; }

.study-result .study-nav { justify-content: flex-start; gap: 14px 24px; }
.study-result .result-score { font-size: 17px; }
.study-result .result-score strong { font-size: 26px; color: var(--aqua-ink); margin-inline: 6px; white-space: nowrap; }

.lesson-example .example-subheading { margin: 22px 0 8px; padding-top: 18px; border-top: 1px solid var(--example-border); }
.lesson-example .grammar-example + .example-reading + .example-guide { margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--example-border); }

/* Keep each verb transformation with its reading and meaning on one row. */
.example-parts.example-rows { display: grid; grid-template-columns: minmax(0, 1fr); }
.example-rows .example-part { justify-items: start; text-align: left; }
.example-parts.example-words { display: grid; grid-template-columns: minmax(0, 1fr); }
.example-words .example-part { grid-template-columns: minmax(0, 1fr) minmax(50px, 35%); justify-items: start; text-align: left; column-gap: 14px; }
.example-words .example-part [lang="ja"], .example-words .example-reading { grid-column: 1; }
.example-words .part-meaning { grid-column: 2; grid-row: 1 / 3; align-self: center; }
@media (max-width: 600px) {
  .example-words .example-part { grid-template-columns: minmax(0, 1fr); }
  .example-words .part-meaning { grid-column: 1; grid-row: auto; }
}

/* Kana stays attached to its kanji; normal text still wraps between words. */
.lesson-example .with-furigana { line-height: 2.15; }
.lesson-example ruby { ruby-position: over; ruby-align: center; }
.lesson-example rt { font-size: 13px; line-height: 1.4; color: var(--aqua-ink); font-weight: 500; }

.hint-script-note { flex-basis: 100%; color: var(--muted); font-size: 13px; }

/* Keep whole-course scope separate from the example currently being shown. */
.course-topic, .lesson-topic, .card-focus { display: flex; align-items: baseline; flex-wrap: wrap; gap: 6px 10px; line-height: 1.8; }
.focus-label { display: inline-block; flex-shrink: 0; border: 1px solid var(--purple-line, #cbb9dc); border-radius: 7px; padding: 1px 7px; color: var(--purple-deep); background: var(--purple-soft, #eee7f5); font-size: 12px; font-weight: 600; white-space: nowrap; }
.lesson-topic { margin: 10px 0 18px; font-size: 15px; }
.lesson-card .card-focus { margin: -4px 0 16px; font-size: 15px; }
.card-focus .focus-label { color: var(--aqua-ink); background: #e5f3f5; border-color: #8dbbc5; }
.course-topic > span:last-child, .lesson-topic > span:last-child, .card-focus > span:last-child { min-width: 0; overflow-wrap: anywhere; }

/* The desktop catalogue uses the page width; only small screens keep a single course column. */
/* Kana catalog: compact lesson groups with readable, non-interactive character cells. */
.lesson-shell.kana-catalog { max-width: 1240px; }
.kana-catalog .study-main { max-width: 1120px; }
.kana-catalog .script-tabs { max-width: 540px; margin: 18px 0 12px; }
.kana-catalog .reading-help { margin: 12px 0 18px; }
.kana-practice-links { display: flex; flex-wrap: wrap; gap: 12px; margin: 18px 0 26px; }
.kana-practice-links .study-review-entry { flex: 1 1 320px; display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 8px 12px; margin: 0; padding: 12px 16px; }
.kana-practice-links .study-review-entry h2 { font-size: 15px; margin: 0; }
.kana-practice-links .study-review-entry .study-note { margin: 2px 0 0; }
.kana-practice-links .text-button { min-height: 44px; white-space: nowrap; }
.kana-layout { display: grid; grid-template-columns: 1.1fr 1fr; grid-template-areas: "basic voiced" "basic sounds" "youon youon"; gap: 24px 28px; align-items: start; }
.kana-basic { grid-area: basic; }
.kana-voiced { grid-area: voiced; }
.kana-sounds { grid-area: sounds; }
.kana-youon { grid-area: youon; }
.kana-section { min-width: 0; --kana-tint: var(--lilac); --kana-line: #cfc0e0; }
.kana-voiced { --kana-tint: var(--aqua); --kana-line: #a8cdd4; }
.kana-youon { --kana-tint: #fff0e4; --kana-line: #e7bea1; }
.kana-section .course-list-heading { margin: 0 0 12px; border-left: 4px solid var(--kana-line); padding-left: 10px; }
.kana-section .study-note { margin: 0 0 12px; }
.kana-section .course-list { margin: 0; gap: 8px; }
.kana-chart .course-row { display: block; padding: 0; border: 1px solid var(--kana-line); border-radius: 12px; background: var(--white); width: 100%; min-width: 0; }
.kana-row-heading { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 2px 8px; padding: 4px 12px; background: var(--kana-tint); border-radius: 11px 11px 0 0; }
.kana-row-heading strong { font-size: 12px; line-height: 1.6; font-weight: 600; }
.kana-row-heading .course-state { max-width: none; margin: 0; font-size: 12px; line-height: 1.6; color: var(--ink); }
.kana-cells { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); border-top: 1px solid var(--kana-line); }
.kana-cells[data-count="3"] { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.kana-cell { display: flex; flex-direction: column; align-items: center; justify-content: center; min-width: 0; padding: 5px 2px 7px; }
.kana-cell + .kana-cell { border-left: 1px solid var(--kana-line); }
.kana-cell [lang="ja"] { font-size: 25px; line-height: 1.4; }
.kana-roman { font-size: 13px; line-height: 1.4; color: var(--muted); }
.kana-chart .course-row:hover { border-color: var(--purple-deep); box-shadow: 0 0 0 1px var(--purple-deep); }
.kana-chart .course-row:focus-visible { outline-offset: 3px; }
.kana-youon .course-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 760px) {
  .kana-layout { display: block; }
  .kana-section + .kana-section { margin-top: 28px; }
  .kana-youon .course-list { grid-template-columns: 1fr; }
  .kana-catalog .study-main { margin-top: 20px; }
}

.lesson-shell.grammar-catalog { max-width: 1240px; }
.grammar-catalog .study-main { max-width: 1120px; }
.grammar-overview { display: grid; gap: 20px; margin: 16px 0 28px; align-items: start; }
.grammar-overview .study-note { margin: 0; font-size: 15px; }
.grammar-overview .study-review-entry { margin: 0; }
.grammar-catalog .unit-section { --unit-tint: var(--lilac); --unit-border: var(--rule-border); margin-top: 22px; }
.grammar-catalog .unit-group:nth-of-type(3n + 2) .unit-section { --unit-tint: var(--aqua); --unit-border: var(--example-border); }
.grammar-catalog .unit-group:nth-of-type(3n) .unit-section { --unit-tint: #fff0e5; --unit-border: #dbaf90; }
.grammar-catalog .unit-section > summary { border: 2px solid var(--unit-border); background: var(--unit-tint); padding: 18px 22px; }
.grammar-catalog .unit-goal { max-width: 76ch; color: var(--ink); }
.grammar-catalog .course-list { gap: 14px; margin: 14px 0 24px; }
.grammar-catalog .course-row { align-items: start; padding: 18px; border-color: var(--unit-border); }
.grammar-catalog .course-row strong { display: block; font-size: 18px; font-weight: 600; line-height: 1.75; overflow-wrap: anywhere; }
.grammar-catalog .course-subtitle { margin-top: 8px; font-size: 14px; }
.grammar-catalog .course-row .course-state { margin-top: 4px; white-space: nowrap; }
@media (hover: hover) { .grammar-catalog .course-row:hover { background: var(--unit-tint); border-color: var(--purple); } }
@media (min-width: 900px) {
  .grammar-overview { grid-template-columns: minmax(0, 1fr) minmax(260px, .55fr); gap: 40px; }
  .grammar-catalog .course-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grammar-catalog .unit-section > summary { position: relative; padding-right: 180px; }
  .grammar-catalog .unit-count { position: static; }
}

.unit-group { position: relative; margin-top: 22px; }
.grammar-catalog .unit-group .unit-section { margin-top: 0; }
.unit-random { position: absolute; z-index: 1; top: 14px; right: 20px; min-height: 44px; padding: 10px 14px; background: white; border: 1px solid var(--rule-border); border-radius: 12px; font-size: 14px; }
.grammar-catalog .unit-group .unit-section > summary { padding-right: 190px; }
.random-lesson-next { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--line); }
.random-lesson-next span { font-size: 13px; color: var(--muted); }
.update-notice { position: sticky; top: 0; z-index: 20; text-align: center; padding: 8px 16px; background: var(--lilac); border-bottom: 1px solid var(--rule-border); }
.update-notice[hidden] { display: none; }
.update-notice button { min-height: 44px; padding: 8px 18px; border: 1px solid var(--purple); border-radius: 12px; color: var(--purple-deep); background: white; font-size: 14px; font-weight: 600; }
@media (max-width: 600px) {
  .grammar-catalog .unit-group .unit-section > summary { padding: 16px; }
  /* The action sits beside the title; the description uses the whole next row. */
  .grammar-catalog .unit-title { display: inline-block; max-width: calc(100% - 128px); min-height: 44px; vertical-align: middle; align-content: center; }
  .unit-random { top: 16px; right: 16px; padding: 9px 10px; }
}
@media (max-width: 600px) {
  .grammar-catalog .unit-section > summary, .grammar-catalog .course-row { padding: 16px; }
  .grammar-catalog .course-row { flex-wrap: wrap; gap: 10px; }
  .grammar-catalog .course-row > span:first-child { flex: 1 1 100%; }
  .grammar-catalog .course-row strong { font-size: 17px; }
  .grammar-catalog .course-row .course-state { margin-left: auto; }
}

.home-entry.drill-entry { background: #f2f6fc; border-color: #a4b8d8; }
.drill-stop { margin-top: 16px; }

.keyword-audio { display: inline-flex; width: 36px; height: 36px; min-height: 44px; min-width: 44px; padding: 8px; margin-left: 8px; vertical-align: middle; }

/* Utility actions remain visible without competing with the learning navigation. */
.header-tools { display: flex; align-items: center; justify-content: flex-end; gap: 16px; }
.header-feedback { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 9px 14px; border: 1px solid #b8a1ce; border-radius: 12px; background: var(--lilac); color: var(--purple-deep); font-size: 14px; font-weight: 600; white-space: nowrap; }
.header-feedback:hover { border-color: var(--purple-deep); background: #e7ddf4; }
@media (max-width: 600px) { .header-tools .lesson-name { display: none; } .header-feedback { padding: 9px 10px; } .home-header .brand-word { font-size: 26px; } }

.header-account { display: inline-flex; align-items: center; min-height: 44px; color: var(--purple-deep); font-size: 14px; white-space: nowrap; }
.account-panel { background: white; border: 1px solid var(--line); border-radius: 20px; padding: 24px; margin: 20px 0; }
.account-panel h2 { font-size: 20px; margin: 0 0 10px; }
.account-panel p { line-height: 1.8; overflow-wrap: anywhere; }
.account-panel .quiet-links { flex-wrap: wrap; }
.account-status { line-height: 1.8; color: var(--purple-deep); }
.account-alert { padding: 14px 20px; background: #fff0e5; color: var(--ink); line-height: 1.7; }
.account-alert[hidden] { display: none; }
@media (max-width: 600px) { .home-header .header-tools { gap: 10px; } .account-panel { padding: 18px; } }
@media (max-width: 420px) {
  .home-header { height: auto; min-height: 72px; flex-wrap: wrap; gap: 4px 16px; padding-top: 12px; padding-bottom: 12px; }
  .home-header .brand { flex-shrink: 0; }
  .home-header .header-tools { margin-left: auto; }
}

.feedback-form fieldset { border: 0; padding: 0; margin: 0; min-width: 0; }
.feedback-form input { width: 100%; border: 1px solid var(--purple); border-radius: 12px; background: var(--paper); color: var(--ink); font: inherit; padding: 12px 14px; }
#feedback-challenge { margin: 20px 0; min-height: 65px; }

.policy-page { max-width: 760px; padding-bottom: 64px; }
.policy-page h2 { margin: 32px 0 12px; font-size: 21px; }
.policy-page p { line-height: 1.85; overflow-wrap: anywhere; }

/* Keep catalogue summaries broad, while individual travel cards retain a reading width. */
.lesson-shell.travel-catalog { max-width: 1160px; }
.travel-catalog .study-main { max-width: 1040px; }
.travel-catalog .travel-categories .course-row { padding: 18px; gap: 12px; align-items: start; }
.travel-catalog .travel-categories .course-row strong { font-size: 17px; line-height: 1.7; }
.travel-catalog .course-row > span:last-child { flex-shrink: 0; }
.travel-card, .keyword-box { overflow-wrap: anywhere; }
@media (max-width: 600px) {
  .welcome p, .home-entry p { font-size: 15px; }
  .home-shortcuts { padding: 14px; }
  .home-shortcuts .quick-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .quick-actions .text-button { min-width: 0; gap: 4px; padding: 10px 7px; font-size: 14px; }
  .quick-detail { display: none; }
  .section-nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .section-nav a { justify-content: center; }
  .grammar-overview .study-review-entry { padding: 12px 16px; }
  .study-main .travel-card { padding: 18px 16px; }
  .travel-card .keyword-box { padding: 14px 12px; }
  .travel-card .keyword-box dl > div { grid-template-columns: minmax(0, 1fr); gap: 3px; }
  .travel-card .kw-kana { white-space: normal; }
}