@import url("./src/theme/tokens.css");
@import url("./src/theme/motion.css");
@import url("./src/theme/accessibility.css");

:root {
  --reading-scale: 1;
  color-scheme: light;
  --ink-primary: #1d1a17;
  --ink-muted: #6d685f;
  --paper-primary: #f5f0e6;
  --paper-card: #e7d8bc;
  --cinnabar: #b64032;
  --mineral-blue: #3f6874;
  --mineral-green: #477362;
  --focus-ring: #f5f0e6;
  --body-gradient-start: #f7f2e8;
  --body-gradient-end: #e8ddca;
  --panel-background: rgb(245 240 230 / 94%);
  --panel-background-strong: rgb(245 240 230 / 96%);
  --chip-background: rgb(255 255 255 / 48%);
  --surface-background: rgb(255 255 255 / 42%);
  --field-background: rgb(255 255 255 / 66%);
  --surface-border: rgb(29 26 23 / 18%);
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  background: var(--paper-primary);
  color: var(--ink-primary);
}

:root[data-reading-mode="plain"] {
  --paper-primary: #fff;
  --paper-card: #f8f8f6;
}

:root[data-reading-mode="night"] {
  color-scheme: dark;
  --ink-primary: #f3ead8;
  --ink-muted: #c8bca8;
  --paper-primary: #263746;
  --paper-card: #314553;
  --focus-ring: #263746;
  --body-gradient-start: #1b2a35;
  --body-gradient-end: #111c24;
  --panel-background: rgb(38 55 70 / 94%);
  --panel-background-strong: rgb(38 55 70 / 97%);
  --chip-background: rgb(49 69 83 / 88%);
  --surface-background: rgb(49 69 83 / 84%);
  --field-background: rgb(28 43 55 / 92%);
  --surface-border: rgb(243 234 216 / 24%);
  --cinnabar: #ff9c8f;
  --mineral-blue: #8ec3d2;
  --mineral-green: #8fc5ad;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 88% 12%, rgb(63 104 116 / 16%), transparent 34rem),
    linear-gradient(
      145deg,
      var(--body-gradient-start),
      var(--body-gradient-end)
    );
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 10;
  padding: 0.6rem 0.9rem;
  transform: translateY(-200%);
  background: var(--ink-primary);
  color: var(--paper-primary);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  width: min(72rem, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.5rem 0;
}

.eyebrow,
.wordmark,
.chapter-label {
  margin: 0;
}

.eyebrow,
.chapter-label {
  color: var(--cinnabar);
  font-weight: 700;
  letter-spacing: 0.12em;
}

.wordmark {
  font-family: "Noto Serif TC", "Songti TC", serif;
  font-size: 1.25rem;
  font-weight: 800;
}

.site-header a {
  color: inherit;
  text-decoration: none;
}

.brand-lockup {
  display: grid;
  flex: 0 0 auto;
  gap: 0.05rem;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: flex-end;
}

.teacher-entry {
  padding: 0.45rem 0.75rem;
  border: 1px solid rgb(29 26 23 / 18%);
  border-radius: 999px;
  color: var(--ink-muted);
  font-size: 0.86rem;
}

.guide-view {
  width: min(72rem, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1rem 0 6rem;
}

.guide-hero,
.guide-card,
.guide-note {
  border: 1px solid color-mix(in srgb, var(--ink-primary) 14%, transparent);
  background: var(--panel-background);
  box-shadow: 0 1.5rem 5rem rgb(38 55 70 / 10%);
}

.guide-hero {
  padding: clamp(1.5rem, 6vw, 4.5rem);
  border-radius: 2rem 0.5rem 2rem 0.5rem;
}

.guide-hero h1 {
  max-width: 13ch;
  font-size: clamp(2.2rem, 7vw, 4.5rem);
}

.guide-hero > p:last-child {
  max-width: 42rem;
  color: var(--ink-muted);
}

.guide-audiences {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  margin-top: 1.25rem;
}

.guide-card,
.guide-note {
  padding: clamp(1.25rem, 4vw, 2.5rem);
  border-radius: 1.3rem 0.35rem;
}

.guide-card h2,
.guide-note h2 {
  margin: 0.4rem 0 1.2rem;
  font-family: "Noto Serif TC", "Songti TC", serif;
  font-size: clamp(1.65rem, 4vw, 2.35rem);
}

.guide-card ol {
  display: grid;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.guide-card li {
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr);
  gap: 0.8rem;
}

.guide-card li > span {
  display: grid;
  width: 2.5rem;
  height: 2.5rem;
  place-items: center;
  border-radius: 50%;
  background: var(--ink-primary);
  color: var(--paper-primary);
  font-weight: 800;
}

.teacher-guide li > span {
  background: var(--mineral-green);
}

.guide-card h3,
.guide-card li p {
  margin: 0;
}

.guide-card h3 {
  font-size: 1rem;
}

.guide-card li p {
  margin-top: 0.15rem;
  color: var(--ink-muted);
  font-size: 0.94rem;
  line-height: 1.65;
}

.guide-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.guide-action {
  display: inline-flex;
  min-height: 2.8rem;
  margin-top: 1.5rem;
  padding: 0.65rem 1rem;
  align-items: center;
  border: 1px solid var(--ink-primary);
  border-radius: 0.8rem 0.2rem;
  background: var(--ink-primary);
  color: var(--paper-primary);
  font-weight: 800;
  text-decoration: none;
}

.guide-action.secondary {
  background: transparent;
  color: var(--ink-primary);
}

.guide-note {
  margin-top: 1.25rem;
}

.guide-note p {
  max-width: 52rem;
  color: var(--ink-muted);
}

main {
  min-height: calc(100vh - 6rem);
}

.paper-panel {
  width: min(42rem, 100%);
  padding: clamp(1.5rem, 5vw, 4rem);
  border: 1px solid color-mix(in srgb, var(--ink-primary) 16%, transparent);
  border-radius: 1.5rem 0.35rem 1.5rem 0.35rem;
  background: var(--panel-background-strong);
  box-shadow: 0 1.5rem 5rem rgb(38 55 70 / 12%);
}

h1 {
  max-width: 12ch;
  margin: 0.8rem 0 1.2rem;
  font-family: "Noto Serif TC", "Songti TC", serif;
  font-size: clamp(2.3rem, 8vw, 4.8rem);
  line-height: 1.15;
  text-wrap: balance;
}

p {
  font-size: 1.05rem;
  line-height: 1.8;
}

.privacy-note {
  padding-top: 1rem;
  border-top: 1px solid rgb(29 26 23 / 12%);
  color: var(--ink-muted);
  font-size: 0.92rem;
}

button,
a {
  font: inherit;
}

button:focus-visible,
a:focus-visible {
  outline: 3px solid var(--ink-primary);
  outline-offset: 3px;
  box-shadow: 0 0 0 6px var(--focus-ring);
}

main h1[tabindex="-1"]:focus {
  outline: none;
}

.home-view {
  width: min(76rem, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1rem 0 5rem;
}

.home-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(18rem, 0.88fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
  min-height: 32rem;
  padding: clamp(2rem, 6vw, 5rem);
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--ink-primary) 14%, transparent);
  border-radius: 2rem 0.5rem 2rem 0.5rem;
  background: var(--panel-background);
  box-shadow: 0 2rem 6rem rgb(38 55 70 / 13%);
}

.hero-copy h1 {
  max-width: 9ch;
}

.hero-lead {
  max-width: 34rem;
  color: var(--ink-muted);
  font-size: clamp(1.05rem, 2vw, 1.22rem);
}

.today-status {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.today-status span {
  padding: 0.45rem 0.75rem;
  border: 1px solid color-mix(in srgb, var(--ink-primary) 14%, transparent);
  border-radius: 999px;
  background: var(--chip-background);
  color: var(--ink-muted);
  font-size: 0.88rem;
}

.floating-city-preview {
  position: relative;
  min-height: 22rem;
  isolation: isolate;
}

.hero-illustration {
  display: block;
  overflow: hidden;
  border: 1px solid rgb(29 26 23 / 12%);
  border-radius: 1.5rem 0.35rem;
  background: var(--paper-card);
  box-shadow: 0 1rem 3rem rgb(38 55 70 / 14%);
}

.hero-illustration img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.ink-moon {
  position: absolute;
  top: 0;
  right: 12%;
  width: 8.5rem;
  aspect-ratio: 1;
  border-radius: 50%;
  background: rgb(182 64 50 / 12%);
  box-shadow: inset 1.2rem -1rem 0 rgb(245 240 230 / 36%);
}

.mountain {
  position: absolute;
  right: -8%;
  bottom: 2rem;
  left: 4%;
  height: 15rem;
  clip-path: polygon(0 100%, 20% 35%, 36% 78%, 57% 9%, 78% 67%, 100% 27%, 100% 100%);
}

.mountain-back {
  opacity: 0.28;
  background: var(--mineral-blue);
  transform: translateY(-2rem);
}

.mountain-front {
  opacity: 0.82;
  background: linear-gradient(150deg, var(--ink-muted), var(--ink-primary));
}

.city-tower {
  position: absolute;
  right: 31%;
  bottom: 3.25rem;
  z-index: 2;
  width: 5.3rem;
  height: 8.4rem;
  clip-path: polygon(12% 100%, 12% 30%, 0 30%, 50% 0, 100% 30%, 88% 30%, 88% 100%);
  background: var(--paper-card);
  box-shadow: inset 0 -2.5rem 0 rgb(63 104 116 / 28%);
}

.city-light {
  position: absolute;
  bottom: 5.6rem;
  z-index: 3;
  width: 0.65rem;
  aspect-ratio: 1;
  border-radius: 50%;
  background: #d8a84d;
  box-shadow: 0 0 1.2rem #d8a84d;
}

.light-one {
  right: 39%;
}

.light-two {
  right: 34%;
}

.city-caption {
  position: absolute;
  right: 0;
  bottom: 0;
  color: var(--ink-muted);
  font-family: "Noto Serif TC", "Songti TC", serif;
  letter-spacing: 0.12em;
}

.route-section {
  padding-top: 5rem;
}

.section-heading {
  display: flex;
  gap: 2rem;
  align-items: end;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.section-heading h2,
.route-card h2 {
  margin: 0.25rem 0 0;
  font-family: "Noto Serif TC", "Songti TC", serif;
}

.section-heading > p {
  max-width: 30rem;
  color: var(--ink-muted);
}

.route-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.route-card {
  display: flex;
  min-width: 0;
  min-height: 28rem;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--ink-primary) 14%, transparent);
  border-radius: 1.5rem 0.35rem 1.5rem 0.35rem;
  background: var(--panel-background);
  box-shadow: 0 1.2rem 3rem rgb(38 55 70 / 8%);
}

.route-card__header {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: stretch;
  min-height: 18rem;
  padding: 0.55rem;
  background: linear-gradient(145deg, rgb(63 104 116 / 13%), transparent);
}

.route-card__header > div {
  padding: 0.35rem 0.95rem 0.75rem;
}

.route-art {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  border-radius: 1.1rem 0.25rem;
  object-fit: cover;
  object-position: center;
  background:
    linear-gradient(145deg, rgb(63 104 116 / 15%), transparent),
    var(--paper-card);
}

.route-science .route-card__header {
  background: linear-gradient(145deg, rgb(71 115 98 / 16%), transparent);
}

.route-humanities .route-card__header {
  background: linear-gradient(145deg, rgb(194 146 61 / 18%), transparent);
}

.route-mark {
  display: grid;
  width: 4rem;
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid currentcolor;
  border-radius: 50% 45% 52% 43%;
  color: var(--cinnabar);
  font-family: "Noto Serif TC", "Songti TC", serif;
  font-size: 1.55rem;
  font-weight: 800;
}

.route-mentor {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.85rem;
  font-weight: 700;
}

.route-card__body {
  flex: 1;
  padding: 1.5rem;
}

.route-question {
  margin-top: 1.4rem;
  padding-left: 1rem;
  border-left: 3px solid var(--cinnabar);
  font-family: "Noto Serif TC", "Songti TC", serif;
  font-weight: 700;
}

.route-reward {
  margin: 0.8rem 0 0;
  color: var(--mineral-green);
  font-size: 0.82rem;
  font-weight: 800;
}

.route-card__actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
  padding: 1rem 1.5rem 1.5rem;
}

.reading-journal {
  margin-top: var(--space-8);
}

.chapter-card {
  max-width: 42rem;
  padding: var(--space-5);
  border: 1px solid color-mix(in srgb, var(--color-ink) 18%, transparent);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--color-paper) 92%, var(--color-jade));
}

.chapter-card h3 {
  margin: 0.3rem 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.15rem);
}

.chapter-review,
.season-unlocked {
  display: inline-block;
  margin-top: var(--space-3);
  color: var(--color-cinnabar);
  font-weight: 800;
}

@media (pointer: coarse), (max-width: 820px) {
  button,
  .teacher-entry,
  .difficulty-button,
  .primary-action {
    min-height: 48px;
  }

  .difficulty-button,
  .primary-action {
    padding-inline: 1rem;
  }
}

.difficulty-button {
  min-height: 3.5rem;
  padding: 0.65rem;
  border: 1px solid rgb(29 26 23 / 24%);
  border-radius: 0.8rem 0.2rem 0.8rem 0.2rem;
  background: transparent;
  color: var(--ink-primary);
  cursor: pointer;
}

.review-shell {
  width: min(86rem, calc(100% - 2rem));
  margin: 0 auto;
  padding: clamp(1rem, 3vw, 3rem) 0 5rem;
}

.review-shell.paper-panel {
  width: min(36rem, calc(100% - 2rem));
  padding: clamp(1.5rem, 5vw, 3rem);
}

.review-shell form {
  display: grid;
  gap: 1rem;
}

.review-shell label {
  display: grid;
  gap: 0.4rem;
  color: var(--ink-muted);
  font-weight: 700;
}

.review-shell input,
.review-shell select {
  min-height: 2.8rem;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--surface-border);
  border-radius: 0.5rem;
  background: var(--field-background);
  color: var(--ink-primary);
}

.review-shell button {
  min-height: 2.8rem;
  padding: 0.65rem 1rem;
  border: 1px solid var(--surface-border);
  border-radius: 0.7rem 0.2rem;
  background: transparent;
  color: var(--ink-primary);
  cursor: pointer;
}

.review-shell .primary-action {
  border-color: var(--cinnabar);
  background: var(--cinnabar);
  color: #fff8ed;
  font-weight: 800;
}

.review-heading {
  display: flex;
  gap: 2rem;
  align-items: end;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.review-heading h1 {
  margin-bottom: 0;
  font-size: clamp(2.2rem, 5vw, 4rem);
}

.review-heading nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.review-heading nav a {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--surface-border);
  border-radius: 999px;
  color: var(--ink-primary);
  text-decoration: none;
}

.classroom-manager {
  margin-bottom: 2rem;
  padding: clamp(1rem, 3vw, 1.6rem);
  border: 1px solid rgb(71 115 98 / 28%);
  border-radius: 1.5rem 0.35rem;
  background:
    linear-gradient(145deg, rgb(71 115 98 / 10%), transparent 60%),
    var(--panel-background);
}

.classroom-manager__heading,
.classroom-card__heading,
.class-code-row {
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
}

.classroom-manager__heading h2,
.classroom-card h3 {
  margin: 0.2rem 0;
  font-family: "Noto Serif TC", "Songti TC", serif;
}

.classroom-manager__heading h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
}

.classroom-manager__heading .primary-action {
  min-height: 3rem;
  padding: 0.65rem 1rem;
  border-radius: 0.75rem 0.2rem;
  white-space: nowrap;
}

.classroom-created,
.review-empty {
  margin: 1rem 0;
  padding: clamp(1rem, 3vw, 1.4rem);
  border: 2px solid rgb(182 64 50 / 52%);
  border-radius: 1rem 0.25rem;
  background:
    linear-gradient(135deg, rgb(182 64 50 / 12%), transparent 62%),
    var(--surface-background);
}

.classroom-created {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(17rem, 0.8fr);
  gap: 1rem;
  align-items: center;
}

.classroom-created h3,
.review-empty h2 {
  margin: 0.2rem 0;
  font-family: "Noto Serif TC", "Songti TC", serif;
  font-size: clamp(1.45rem, 3vw, 2.2rem);
}

.classroom-created p,
.review-empty p {
  margin: 0.35rem 0;
}

.classroom-created .class-code-row {
  margin: 0;
  background: var(--field-background);
}

.review-empty {
  max-width: 48rem;
  border-color: rgb(71 115 98 / 38%);
  background:
    linear-gradient(135deg, rgb(71 115 98 / 10%), transparent 62%),
    var(--surface-background);
}

.review-heading nav a[aria-current="page"] {
  border-color: var(--cinnabar);
  background: var(--cinnabar);
  color: #fff8ed;
}

.review-status-note {
  padding: 0.8rem;
  border-left: 4px solid var(--mineral-green);
  background: rgb(71 115 98 / 8%);
  color: var(--ink-muted);
}

.classroom-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.classroom-card,
.classroom-empty {
  padding: 1rem;
  border: 1px solid var(--surface-border);
  border-radius: 1rem 0.25rem;
  background: var(--surface-background);
}

.classroom-card.is-revoked {
  border-style: dashed;
  background: rgb(109 104 95 / 8%);
}

.classroom-status {
  padding: 0.35rem 0.65rem;
  border: 1px solid var(--mineral-green);
  border-radius: 999px;
  color: var(--mineral-green);
  font-size: 0.8rem;
  font-weight: 800;
  white-space: nowrap;
}

.is-revoked .classroom-status {
  border-color: var(--ink-muted);
  color: var(--ink-muted);
}

.class-code-row {
  margin: 1rem 0;
  padding: 0.8rem;
  border: 1px dashed rgb(182 64 50 / 48%);
  border-radius: 0.75rem;
  background: rgb(182 64 50 / 7%);
}

.class-code-row code {
  color: var(--cinnabar);
  font-size: clamp(1.2rem, 4vw, 1.65rem);
  font-weight: 900;
  letter-spacing: 0.12em;
}

.class-code-row button,
.classroom-revoke {
  min-height: 2.75rem;
  border: 1px solid rgb(29 26 23 / 28%);
  border-radius: 0.65rem 0.2rem;
  background: transparent;
  color: var(--ink-primary);
  cursor: pointer;
  font-weight: 800;
}

.class-code-note {
  color: var(--ink-muted);
  font-size: 0.9rem;
}

.classroom-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.5rem;
  margin: 1rem 0;
}

.classroom-metrics div {
  min-width: 0;
}

.classroom-metrics dt {
  color: var(--ink-muted);
  font-size: 0.75rem;
}

.classroom-metrics dd {
  margin: 0.2rem 0 0;
  font-weight: 800;
  overflow-wrap: anywhere;
}

.classroom-revoke {
  width: 100%;
  border-color: rgb(182 64 50 / 45%);
  color: var(--cinnabar);
}

.classroom-revoke-confirm {
  margin-top: 0.75rem;
  padding: 0.9rem;
  border: 2px solid var(--cinnabar);
  border-radius: 0.75rem 0.2rem;
  background: var(--field-background);
}

.classroom-revoke-confirm p {
  margin: 0 0 0.55rem;
}

.classroom-revoke-confirm > div {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.classroom-revoke-confirm [data-confirm-revoke] {
  border-color: var(--cinnabar);
  background: var(--cinnabar);
  color: #fff8ed;
  font-weight: 800;
}

.review-list {
  display: grid;
  gap: 0.8rem;
}

.review-list-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;
  padding: 1rem;
  border: 1px solid var(--surface-border);
  border-radius: 1rem 0.25rem;
  background: var(--surface-background);
}

.review-list-item h2 {
  margin: 0.2rem 0;
  font-family: "Noto Serif TC", "Songti TC", serif;
  font-size: clamp(1.25rem, 3vw, 1.8rem);
}

.review-list-item p {
  margin: 0.25rem 0;
  overflow-wrap: anywhere;
}

.review-list-item__action {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.quality-seal--compact {
  width: 3.6rem;
  font-size: 1.05rem;
}

.review-back {
  margin-bottom: 0.8rem;
  border-color: var(--mineral-green);
  font-weight: 800;
}

.review-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.review-detail {
  min-width: 0;
  padding: clamp(1rem, 3vw, 2rem);
  border: 1px solid var(--surface-border);
  border-radius: 1.5rem 0.35rem;
  background: var(--panel-background);
  box-shadow: 0 1.2rem 3rem rgb(38 55 70 / 8%);
}

.review-detail__header,
.review-columns,
.review-diff,
.review-actions {
  display: grid;
  gap: 1rem;
}

.review-detail__header {
  grid-template-columns: 1fr auto;
  align-items: start;
}

.review-detail__header h2 {
  margin: 0.35rem 0 0;
  font-family: "Noto Serif TC", "Songti TC", serif;
  font-size: clamp(1.5rem, 3vw, 2.4rem);
}

.quality-seal {
  display: grid;
  width: 4.5rem;
  aspect-ratio: 1;
  place-items: center;
  border: 2px solid var(--cinnabar);
  border-radius: 50%;
  color: var(--cinnabar);
  font-size: 1.4rem;
  font-weight: 900;
}

.quality-seal small {
  margin-top: -1rem;
  font-size: 0.65rem;
}

.review-columns {
  grid-template-columns: minmax(0, 1fr) minmax(15rem, 0.9fr);
  margin-top: 1.5rem;
}

.review-question,
.student-preview,
.review-diff article {
  margin-top: 0.75rem;
  padding: 1rem;
  border: 1px solid var(--surface-border);
  border-radius: 0.75rem;
  background: var(--surface-background);
}

.preview-switch {
  display: flex;
  gap: 0.5rem;
}

.student-preview {
  margin-inline: auto;
  transition: max-width 160ms ease;
}

.student-preview--mobile {
  max-width: 22rem;
}

.student-preview--desktop {
  max-width: 100%;
}

.review-diff {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 1rem 0;
}

.review-diff .is-changed {
  border-color: var(--cinnabar);
}

.review-actions {
  grid-template-columns: minmax(10rem, 1fr) minmax(10rem, 1fr) auto auto;
  align-items: end;
  padding-top: 1rem;
  border-top: 1px solid var(--surface-border);
}

.form-message {
  min-height: 1.8rem;
  color: var(--cinnabar);
  font-weight: 700;
}

.class-shell {
  margin-inline: auto;
}

.class-shell form {
  display: grid;
  gap: 1rem;
}

.class-shell label {
  color: var(--ink-muted);
  font-weight: 800;
}

.class-shell input {
  width: 100%;
  min-height: 3.25rem;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--surface-border);
  border-radius: 0.75rem 0.2rem;
  background: var(--field-background);
  color: var(--ink-primary);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.class-shell input:focus-visible {
  outline: 3px solid rgb(182 64 50 / 30%);
  outline-offset: 2px;
  border-color: var(--cinnabar);
}

.class-code-help {
  margin: -0.5rem 0 0;
  color: var(--ink-muted);
  font-size: 0.9rem;
}

.class-leave {
  display: block;
  min-height: 3rem;
  margin-top: 1rem;
  padding: 0.65rem 1rem;
  border: 1px solid rgb(29 26 23 / 28%);
  border-radius: 0.7rem 0.2rem;
  background: transparent;
  color: var(--ink-primary);
  cursor: pointer;
  font-weight: 800;
}

.landmark-level {
  display: grid;
  width: min(16rem, 100%);
  min-height: 8rem;
  margin: 1.5rem 0;
  place-items: center;
  border: 1px solid rgb(29 26 23 / 20%);
  border-radius: 50% 45% 52% 43%;
  background:
    radial-gradient(circle, rgb(71 115 98 / 22%), transparent 62%),
    var(--surface-background);
  color: var(--mineral-green);
  font-family: "Noto Serif TC", "Songti TC", serif;
  font-size: 1.5rem;
  font-weight: 800;
}

@media (max-width: 60rem) {
  .classroom-created {
    grid-template-columns: 1fr;
  }

  .classroom-list {
    grid-template-columns: 1fr;
  }

  .review-pair,
  .review-columns {
    grid-template-columns: 1fr;
  }

  .review-actions {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 42rem) {
  .site-header {
    width: min(100% - 1rem, 42rem);
    padding: 0.5rem 0;
  }

  .brand-lockup {
    line-height: 1.15;
  }

  .brand-lockup .eyebrow {
    font-size: 0.68rem;
  }

  .brand-lockup .wordmark {
    font-size: 1rem;
  }

  .site-nav {
    display: grid;
    flex: 1;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.25rem;
  }

  .teacher-entry {
    display: grid;
    min-height: 44px;
    padding: 0.35rem 0.25rem;
    place-items: center;
    font-size: 0.74rem;
    line-height: 1.2;
    text-align: center;
  }

  .review-heading {
    display: block;
  }

  .classroom-manager__heading,
  .classroom-card__heading,
  .class-code-row {
    align-items: stretch;
    flex-direction: column;
  }

  .classroom-manager__heading .primary-action,
  .class-code-row button {
    width: 100%;
  }

  .review-list-item {
    grid-template-columns: 1fr;
  }

  .review-list-item__action {
    justify-content: space-between;
  }

  .classroom-status {
    align-self: flex-start;
  }

  .classroom-metrics {
    grid-template-columns: 1fr 1fr;
  }

  .review-pair,
  .review-diff,
  .review-actions {
    grid-template-columns: 1fr;
  }

  .guide-audiences {
    grid-template-columns: 1fr;
  }
}

.difficulty-button:hover {
  border-color: var(--cinnabar);
  background: rgb(182 64 50 / 6%);
}

.difficulty-button span,
.difficulty-button small {
  display: block;
}

.difficulty-button span {
  font-weight: 800;
}

.difficulty-button small {
  margin-top: 0.2rem;
  color: var(--ink-muted);
}

.reading-view {
  min-height: calc(100vh - 6rem);
  background: var(--paper-primary);
}

.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 20;
  width: 100%;
  height: 2rem;
  background: color-mix(in srgb, var(--paper-primary) 94%, transparent);
  box-shadow: 0 1px 0 rgb(109 104 95 / 16%);
}

.reading-progress__bar {
  position: absolute;
  inset: 0 auto auto 0;
  width: 0;
  height: 3px;
  background: var(--cinnabar);
  transition: width 180ms ease;
}

.reading-progress__text {
  position: absolute;
  inset: 0.3rem 0 auto;
  color: var(--ink-muted);
  font-size: 0.78rem;
  font-weight: 750;
  text-align: center;
}

.reading-layout {
  display: grid;
  grid-template-columns: minmax(9rem, 1fr) minmax(0, 45rem) minmax(11rem, 1fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  width: min(86rem, calc(100% - 2rem));
  margin: 0 auto;
  padding: 3rem 0 7rem;
}

.reading-side,
.reading-controls {
  position: sticky;
  top: 2rem;
  align-self: start;
}

.back-link {
  color: var(--ink-primary);
}

.reading-side .chapter-label {
  margin-top: 2.5rem;
}

.reading-difficulty {
  color: var(--ink-muted);
  font-weight: 700;
}

.reading-article {
  min-width: 0;
  padding: clamp(1.5rem, 4vw, 4rem);
  border: 1px solid rgb(109 104 95 / 20%);
  border-radius: 1.5rem 0.35rem 1.5rem 0.35rem;
  background: color-mix(in srgb, var(--paper-primary) 96%, white 4%);
  box-shadow: 0 1.5rem 5rem rgb(29 26 23 / 8%);
}

.reading-header {
  padding-bottom: 2rem;
  border-bottom: 1px solid rgb(109 104 95 / 20%);
}

.reading-header h1 {
  max-width: 14ch;
  font-size: clamp(2.2rem, 5vw, 3.8rem);
}

.reading-meta {
  color: var(--ink-muted);
  font-size: 0.9rem;
}

.reading-hook {
  padding: 1rem 1.2rem;
  border-left: 3px solid var(--cinnabar);
  background: color-mix(in srgb, var(--paper-card) 55%, transparent);
  font-family: "Noto Serif TC", "Songti TC", serif;
  font-weight: 700;
}

.reading-hook span {
  color: var(--cinnabar);
}

.reading-pace-note {
  margin-top: 0.9rem;
  padding: 0.75rem 0.9rem;
  border-left: 4px solid var(--gold);
  background: color-mix(in srgb, var(--gold) 12%, transparent);
  color: var(--ink-secondary);
  font-weight: 750;
  line-height: 1.65;
}

.reading-resume {
  margin-top: 1.25rem;
  padding: 1rem;
  border: 1px solid rgb(109 104 95 / 22%);
  border-radius: 0.9rem;
  background: var(--paper-card);
}

.reading-resume p {
  margin-top: 0;
  font-weight: 750;
}

.reading-resume div {
  display: flex;
  gap: 0.6rem;
}

.reading-resume button {
  min-height: 3rem;
}

.reading-block.is-resumed {
  scroll-margin-top: 3rem;
  animation: resume-highlight 1.5s ease;
}

@keyframes resume-highlight {
  0%,
  65% {
    background: color-mix(in srgb, var(--cinnabar) 12%, transparent);
  }
}

.reading-body {
  padding: 2rem 0;
}

.reading-block {
  margin-bottom: 1.6rem;
}

.paragraph-scaffold {
  display: inline-flex;
  margin: 0 0 0.45rem;
  padding: 0.2rem 0.55rem;
  border-left: 3px solid var(--mineral-blue);
  color: var(--mineral-blue);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.reading-paragraph {
  margin: 0;
  font-family: "Noto Serif TC", "Songti TC", serif;
  font-size: calc(1.18rem * var(--reading-scale));
  font-weight: 450;
  line-height: 1.9;
  text-align: justify;
}

.inline-glossary {
  margin-top: 0.65rem;
  padding: 0.55rem 0.75rem;
  border: 1px solid color-mix(in srgb, var(--mineral-blue) 28%, transparent);
  border-radius: 0.7rem 0.2rem;
  background: color-mix(in srgb, var(--paper-card) 42%, transparent);
}

.inline-glossary details + details {
  margin-top: 0.35rem;
}

.inline-glossary summary {
  color: var(--mineral-blue);
  cursor: pointer;
  font-weight: 800;
}

.inline-glossary p {
  margin: 0.35rem 0 0;
  color: var(--ink-muted);
  font-size: 0.92rem;
  line-height: 1.65;
}

.glossary-panel,
.source-panel {
  margin-top: 2rem;
  padding: 1.25rem;
  border: 1px solid rgb(109 104 95 / 22%);
  border-radius: 0.9rem 0.25rem 0.9rem 0.25rem;
  background: var(--paper-card);
}

.glossary-panel h2,
.source-panel h2 {
  margin-top: 0;
  font-size: 1.05rem;
}

.source-panel a {
  color: var(--ink-primary);
  overflow-wrap: anywhere;
}

.primary-action {
  width: 100%;
  min-height: 3.8rem;
  margin-top: 2rem;
  border: 0;
  border-radius: 0.85rem 0.2rem 0.85rem 0.2rem;
  background: var(--cinnabar);
  color: #fff8eb;
  cursor: pointer;
  font-weight: 800;
}

.control-label {
  margin-top: 0;
  font-size: 0.85rem;
  font-weight: 800;
}

.mode-group,
.font-size-group {
  display: grid;
  gap: 0.45rem;
}

.font-size-group {
  grid-template-columns: 1fr 1fr;
  margin-top: 0.75rem;
}

.reading-controls button {
  min-height: 2.8rem;
  border: 1px solid rgb(109 104 95 / 30%);
  border-radius: 0.65rem 0.2rem 0.65rem 0.2rem;
  background: var(--paper-card);
  color: var(--ink-primary);
  cursor: pointer;
}

.reading-controls button[aria-pressed="true"] {
  border-color: var(--cinnabar);
  box-shadow: inset 4px 0 0 var(--cinnabar);
}

.assessment-view {
  width: min(58rem, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0 7rem;
}

.assessment-sheet {
  padding: clamp(1.5rem, 4vw, 4rem);
  border: 1px solid rgb(109 104 95 / 20%);
  border-radius: 1.5rem 0.35rem 1.5rem 0.35rem;
  background: var(--panel-background-strong);
  box-shadow: 0 1.5rem 5rem rgb(29 26 23 / 9%);
}

.assessment-header {
  margin-bottom: 2rem;
}

.assessment-header h1 {
  margin-bottom: 1rem;
  font-size: clamp(2.4rem, 7vw, 4.4rem);
}

.assessment-question {
  margin: 0 0 1.4rem;
  padding: 1.2rem;
  border: 1px solid rgb(109 104 95 / 24%);
  border-radius: 1rem 0.25rem 1rem 0.25rem;
}

.assessment-question legend {
  padding: 0 0.5rem;
  font-family: "Noto Serif TC", "Songti TC", serif;
  font-size: 1.2rem;
  font-weight: 800;
}

.assessment-question legend span {
  display: block;
  color: var(--cinnabar);
  font-family: "Noto Sans TC", sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
}

.assessment-options {
  display: grid;
  gap: 0.55rem;
  padding-top: 1rem;
}

.assessment-option {
  display: grid;
  position: relative;
  grid-template-columns: 2rem minmax(0, 1fr);
  gap: 0.55rem;
  align-items: center;
  min-height: 3rem;
  padding: 0.7rem;
  border: 1px solid rgb(109 104 95 / 24%);
  border-radius: 0.7rem 0.2rem 0.7rem 0.2rem;
  cursor: pointer;
}

.assessment-option:has(input:checked) {
  border-color: var(--cinnabar);
  background: rgb(182 64 50 / 7%);
}

.assessment-option input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.assessment-option:focus-within {
  outline: 3px double var(--cinnabar);
  outline-offset: 2px;
}

.option-marker {
  display: grid;
  width: 1.8rem;
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid currentcolor;
  border-radius: 50%;
  font-weight: 800;
}

.question-feedback {
  margin-top: 0;
  overflow: hidden;
}

.question-feedback.is-correct,
.question-feedback.is-incorrect {
  margin-top: 1rem;
  padding: 1rem;
  border-left: 4px solid var(--mineral-green, #477362);
  background: rgb(71 115 98 / 9%);
}

.question-feedback.is-incorrect {
  border-left-color: #8e3e35;
  background: rgb(142 62 53 / 8%);
}

.question-feedback p {
  margin: 0.35rem 0;
}

.question-feedback a,
.evidence-link {
  color: var(--ink-primary);
  font-weight: 800;
}

.evidence-link {
  min-height: 2.75rem;
  padding: 0.55rem 0.8rem;
  border: 1px solid currentcolor;
  border-radius: 0.6rem;
  background: transparent;
}

.assessment-navigation {
  display: flex;
  gap: 0.75rem;
  justify-content: space-between;
  margin-top: 1rem;
}

.assessment-navigation button {
  min-height: 3rem;
}

.evidence-drawer {
  margin-top: 1.25rem;
  padding: 1.25rem;
  border: 2px solid var(--mineral-blue);
  border-radius: 1rem 0.25rem 1rem 0.25rem;
  background: var(--paper-secondary);
}

.evidence-drawer p {
  font-family: "Noto Serif TC", "Songti TC", serif;
  font-size: 1.05rem;
  line-height: 1.9;
}

.form-error {
  min-height: 1.5rem;
  color: #7f352d;
  font-weight: 800;
}

.assessment-completion {
  margin-top: 2rem;
  padding: 1.5rem;
  border: 1px solid rgb(71 115 98 / 38%);
  border-radius: 1rem 0.25rem 1rem 0.25rem;
  background: rgb(71 115 98 / 9%);
}

.assessment-completion h2 {
  margin-top: 0;
  font-family: "Noto Serif TC", "Songti TC", serif;
  font-size: 2rem;
}

.reading-strategy-panel {
  margin: 1.5rem 0;
  padding: clamp(1rem, 3vw, 1.5rem);
  border: 1px solid rgb(182 64 50 / 32%);
  border-radius: 1rem 0.25rem 1rem 0.25rem;
  background: var(--paper-secondary);
}

.reading-strategy-panel > h2 {
  margin: 0.25rem 0 0.65rem;
  font-size: clamp(1.55rem, 6vw, 2.25rem);
}

.reading-strategy-purpose {
  margin-bottom: 1rem;
  font-size: 1.05rem;
  line-height: 1.8;
}

.reading-strategy-structure,
.reading-strategy-reflection {
  padding: 0.9rem 1rem;
  border-left: 4px solid var(--cinnabar);
  background: rgb(182 64 50 / 7%);
}

.reading-strategy-structure p,
.reading-strategy-reflection p {
  margin: 0.35rem 0;
  line-height: 1.75;
}

.reading-strategy-steps {
  display: grid;
  gap: 0.8rem;
  margin: 1rem 0;
  padding: 0;
  list-style: none;
  counter-reset: strategy-step;
}

.reading-strategy-steps li {
  position: relative;
  padding: 1rem 1rem 1rem 3.4rem;
  border: 1px solid rgb(109 104 95 / 24%);
  border-radius: 0.8rem 0.2rem 0.8rem 0.2rem;
  counter-increment: strategy-step;
}

.reading-strategy-steps li::before {
  position: absolute;
  top: 1rem;
  left: 1rem;
  display: grid;
  width: 1.8rem;
  aspect-ratio: 1;
  place-items: center;
  border-radius: 50%;
  background: var(--cinnabar);
  color: #fff8e9;
  content: counter(strategy-step);
  font-weight: 900;
}

.reading-strategy-steps h3,
.reading-strategy-steps p {
  margin: 0 0 0.5rem;
}

.reading-strategy-example {
  color: var(--ink-secondary);
  font-size: 0.95rem;
  line-height: 1.75;
}

.reading-strategy-example summary,
.reading-strategy-more summary {
  min-height: 2.75rem;
  padding: 0.55rem 0;
  color: var(--cinnabar);
  cursor: pointer;
  font-weight: 850;
}

.reading-strategy-example p {
  margin-bottom: 0;
}

.reading-strategy-takeaway {
  padding: 0.9rem 1rem;
  border-left: 4px solid var(--mineral-green);
  background: rgb(71 115 98 / 10%);
  line-height: 1.75;
}

.reading-strategy-more {
  margin-top: 0.9rem;
  padding: 0 0.9rem;
  border: 1px solid rgb(109 104 95 / 24%);
  border-radius: 0.75rem;
}

.reading-strategy-more .reading-strategy-structure {
  margin-bottom: 0.75rem;
}

@media (min-width: 48rem) {
  .reading-strategy-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 36rem) {
  .assessment-view {
    width: calc(100% - 1rem);
  }

  .assessment-sheet {
    padding: 0.75rem;
    border-radius: 1rem 0.25rem;
  }

  .assessment-header h1 {
    font-size: clamp(2rem, 11vw, 2.7rem);
  }

  .assessment-question {
    padding: 0.8rem;
  }

  .assessment-completion {
    padding: 0.8rem 0.5rem;
  }

  .reading-strategy-panel {
    margin-inline: -0.25rem;
    padding: 0.75rem;
  }

  .reading-strategy-steps li {
    padding: 0.85rem 0.75rem 0.85rem 3rem;
  }

  .reading-strategy-steps li::before {
    top: 0.85rem;
    left: 0.7rem;
  }

  .assessment-navigation {
    position: relative;
    z-index: 2;
    padding-bottom: max(0.5rem, env(safe-area-inset-bottom));
  }
}

html[data-focus-context="reading"] #danai-family-classroom,
html[data-focus-context="reading"] #danai-learning-passport,
html[data-focus-context="assessment"] #danai-family-classroom,
html[data-focus-context="assessment"] #danai-learning-passport {
  display: none !important;
}

.city-view {
  width: min(76rem, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0 7rem;
}

.city-header {
  max-width: 48rem;
  margin-bottom: 2rem;
}

.city-header h1 {
  max-width: 12ch;
}

.city-earned {
  display: inline-block;
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--cinnabar);
  border-radius: 999px;
  color: var(--cinnabar);
  font-weight: 800;
}

.city-announcement {
  margin-bottom: 1.5rem;
  padding: 1.5rem;
  border: 1px solid rgb(71 115 98 / 38%);
  border-radius: 1rem 0.25rem 1rem 0.25rem;
  background: rgb(71 115 98 / 9%);
}

.city-announcement h2 {
  margin: 0.4rem 0;
  font-family: "Noto Serif TC", "Songti TC", serif;
  font-size: 2rem;
}

.primary-link {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  margin-top: 0.6rem;
  padding: 0 1rem;
  border-radius: 0.7rem 0.2rem 0.7rem 0.2rem;
  background: var(--cinnabar);
  color: #fff8eb;
  font-weight: 800;
  text-decoration: none;
}

.building-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.9rem;
}

.building-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: 1.25rem;
  border: 1px solid rgb(109 104 95 / 24%);
  border-radius: 1.2rem 0.3rem 1.2rem 0.3rem;
  background: var(--panel-background);
  transition:
    transform 240ms ease,
    background 240ms ease;
}

.building-card.is-upgraded {
  transform: translateY(-6px);
  background: rgb(231 216 188 / 98%);
}

.building-card.is-recommended {
  border-color: var(--mineral-green);
  box-shadow: inset 0 4px 0 var(--mineral-green);
}

.building-mark {
  display: grid;
  width: 3.5rem;
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid var(--cinnabar);
  border-radius: 50%;
  color: var(--cinnabar);
  font-family: "Noto Serif TC", "Songti TC", serif;
  font-size: 1.35rem;
  font-weight: 800;
}

.building-card h2 {
  font-family: "Noto Serif TC", "Songti TC", serif;
}

.building-stage-track {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.3rem;
  margin: auto 0 1rem;
}

.building-stage-track span {
  display: grid;
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid rgb(109 104 95 / 25%);
  border-radius: 50%;
  color: var(--ink-muted);
  font-size: 0.75rem;
}

.building-stage-track span.is-built {
  border-color: var(--mineral-green);
  background: var(--mineral-green);
  color: #fff;
}

.building-invest {
  min-height: 3.2rem;
  border: 1px solid var(--ink-primary);
  border-radius: 0.7rem 0.2rem 0.7rem 0.2rem;
  background: transparent;
  color: var(--ink-primary);
  cursor: pointer;
  font-weight: 800;
}

.building-invest:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

@media (max-width: 36rem) {
  .site-header {
    gap: 0.5rem;
  }

  main {
    align-items: start;
  }

  .home-view {
    width: min(100% - 1rem, 36rem);
  }

  .home-hero {
    grid-template-columns: 1fr;
    gap: 1rem;
    min-height: auto;
    padding: 1.2rem;
  }

  .home-hero h1 {
    margin-block: 0.5rem;
    font-size: clamp(2rem, 10vw, 2.65rem);
  }

  .hero-lead {
    margin-block: 0.5rem;
    font-size: 0.98rem;
  }

  .today-status {
    gap: 0.35rem;
    margin-top: 0.75rem;
  }

  .today-status span {
    padding: 0.3rem 0.55rem;
    font-size: 0.78rem;
  }

  .hero-illustration img {
    height: 7.5rem;
    object-position: center 38%;
  }

  .hero-illustration {
    display: none;
  }

  .floating-city-preview {
    min-height: 14rem;
  }

  .route-section {
    padding-top: 1.5rem;
  }

  .section-heading {
    align-items: start;
    flex-direction: column;
    gap: 0;
  }

  .route-section .section-heading > p {
    display: none;
  }

  .route-grid {
    grid-template-columns: 1fr;
  }

  .route-card {
    min-height: 0;
  }

  .route-card__header {
    display: grid;
    grid-template-columns: 7rem 1fr;
    min-height: 0;
    align-items: center;
  }

  .route-art {
    aspect-ratio: 1;
  }

  .route-card__body {
    padding: 0.85rem 1rem;
  }

  .route-card__body > p:first-child {
    display: none;
  }

  .route-question {
    margin: 0;
  }

  .route-card__actions {
    padding: 0.75rem 1rem 1rem;
  }

  .reading-layout {
    display: block;
    width: 100%;
    padding: 0 0 6rem;
  }

  .reading-side {
    position: static;
    padding: 1rem;
  }

  .reading-side .chapter-label,
  .reading-difficulty {
    display: none;
  }

  .reading-article {
    padding: 1.1rem;
    border-right: 0;
    border-left: 0;
    border-radius: 0;
    box-shadow: none;
  }

  .reading-resume div {
    flex-direction: column;
  }

  .reading-paragraph {
    font-size: calc(1.08rem * var(--reading-scale));
    line-height: 1.8;
  }

  .reading-controls {
    position: fixed;
    top: auto;
    right: 0.75rem;
    bottom: 0.75rem;
    left: 0.75rem;
    z-index: 15;
    display: flex;
    gap: 0.4rem;
    align-items: center;
    padding: 0.55rem;
    border: 1px solid rgb(109 104 95 / 25%);
    border-radius: 1rem;
    background: var(--paper-primary);
    box-shadow: 0 0.8rem 2rem rgb(29 26 23 / 18%);
  }

  .control-label {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
  }

  .mode-group {
    display: flex;
    flex: 1;
  }

  .mode-group button {
    flex: 1;
  }

  .font-size-group {
    display: flex;
    margin: 0;
  }

  .building-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 63.99rem) {
  .reading-progress {
    position: sticky;
  }

  .reading-layout {
    display: block;
    width: 100%;
    padding: 0 0 7rem;
  }

  .reading-side {
    position: static;
    padding: 1rem max(1rem, calc((100% - 45rem) / 2));
  }

  .reading-side .chapter-label,
  .reading-difficulty {
    display: none;
  }

  .reading-article {
    width: min(45rem, 100%);
    margin: 0 auto;
  }

  .reading-controls {
    position: fixed;
    top: auto;
    right: 0.75rem;
    bottom: 0.75rem;
    left: 0.75rem;
    z-index: 15;
    display: flex;
    gap: 0.4rem;
    align-items: center;
    padding: 0.55rem;
    border: 1px solid rgb(109 104 95 / 25%);
    border-radius: 1rem;
    background: var(--paper-primary);
    box-shadow: 0 0.8rem 2rem rgb(29 26 23 / 18%);
  }

  .reading-controls .control-label {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
  }

  .reading-controls .mode-group {
    display: flex;
    flex: 1;
  }

  .reading-controls .mode-group button {
    flex: 1;
  }

  .reading-controls .font-size-group {
    display: flex;
    margin: 0;
  }
}

@media (min-width: 36.01rem) and (max-width: 63.99rem) {
  .home-hero {
    grid-template-columns: minmax(0, 1.1fr) minmax(14rem, 0.9fr);
    min-height: auto;
    padding: 1.5rem;
  }

  .home-hero h1 {
    max-width: 10ch;
    font-size: 2.75rem;
  }

  .home-hero .hero-lead {
    display: none;
  }

  .route-section {
    padding-top: 1rem;
  }

  .route-section .section-heading > p {
    display: none;
  }

  .route-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .route-card {
    min-height: 0;
  }

  .route-card__header {
    display: grid;
    grid-template-columns: 6rem 1fr;
    min-height: 0;
    align-items: center;
  }

  .route-art {
    aspect-ratio: 1;
  }

  .route-card__body {
    padding: 1rem;
  }

  .route-card__body > p:first-child {
    display: none;
  }

  .route-question {
    margin-top: 0;
  }

  .route-card__actions {
    padding: 0.75rem 1rem 1rem;
  }

  .route-card:last-child {
    grid-column: 1 / -1;
    width: calc((100% - 1rem) / 2);
    justify-self: center;
  }

  .building-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

.reading-controls__toggle {
  display: none;
}

.mentor-guide {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.75rem;
  align-items: center;
  margin: 1.25rem 0 0;
  padding: 0.85rem 1rem;
  border: 1px solid color-mix(in srgb, var(--mineral-blue) 45%, transparent);
  border-radius: 1rem 0.25rem;
  background: color-mix(in srgb, var(--paper-card) 55%, transparent);
}

.mentor-guide span {
  color: var(--cinnabar);
  font-weight: 900;
  white-space: nowrap;
}

.mentor-guide p,
.assessment-mentor {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.92rem;
}

.midpoint-checkpoint {
  margin: 0 0 0.9rem;
  padding: 0.8rem 1rem;
  border-left: 4px solid var(--cinnabar);
  background: color-mix(in srgb, var(--paper-card) 48%, transparent);
}

.midpoint-checkpoint span {
  color: var(--cinnabar);
  font-weight: 900;
}

.midpoint-checkpoint p {
  margin: 0.25rem 0 0;
  color: var(--ink-muted);
  font-size: 0.92rem;
  line-height: 1.65;
}

.assessment-mentor {
  padding-top: 0.4rem;
  border-top: 1px dashed color-mix(in srgb, var(--ink-primary) 18%, transparent);
}

.chapter-mentor {
  margin-bottom: 0;
  color: var(--ink-muted);
  font-size: 0.92rem;
  font-weight: 750;
}

.chapter-unlock {
  display: inline-block;
  margin-top: var(--space-3);
  padding: 0.35rem 0.6rem;
  border: 1px solid var(--mineral-green);
  border-radius: 999px;
  color: var(--mineral-green);
  font-size: 0.82rem;
  font-weight: 800;
}

.city-overview {
  width: min(76rem, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1rem 0 7rem;
}

.city-overview__hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(22rem, 1.1fr);
  gap: clamp(1.5rem, 5vw, 4rem);
  align-items: center;
  padding: clamp(1.5rem, 5vw, 4rem);
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--ink-primary) 16%, transparent);
  border-radius: 2rem 0.5rem;
  background:
    radial-gradient(circle at 80% 20%, rgb(216 168 77 / 16%), transparent 22rem),
    var(--panel-background);
  box-shadow: 0 2rem 6rem rgb(38 55 70 / 13%);
}

.city-overview__hero h1 {
  max-width: 10ch;
}

.city-overview__stats,
.city-overview__actions,
.goal-options {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.city-overview__stats span {
  padding: 0.4rem 0.7rem;
  border: 1px solid color-mix(in srgb, var(--ink-primary) 18%, transparent);
  border-radius: 999px;
  background: var(--chip-background);
  color: var(--ink-muted);
  font-size: 0.86rem;
}

.city-overview__actions {
  align-items: center;
  margin-top: 1rem;
}

.city-overview__actions button,
.restore-record,
.goal-options button {
  display: inline-flex;
  min-height: 3rem;
  padding: 0.55rem 0.85rem;
  align-items: center;
  border: 1px solid var(--ink-primary);
  border-radius: 0.7rem 0.2rem;
  background: transparent;
  color: var(--ink-primary);
  cursor: pointer;
  font-weight: 800;
}

.restore-record {
  cursor: pointer;
}

.restore-record input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.restore-status {
  min-height: 1.5rem;
  margin: 0.4rem 0 0;
  color: var(--ink-muted);
  font-size: 0.85rem;
}

.city-panorama {
  display: flex;
  min-height: 18rem;
  gap: 0.55rem;
  align-items: end;
  justify-content: center;
  padding: 2rem 1rem 1rem;
  border-radius: 50% 50% 1.2rem 1.2rem;
  background:
    radial-gradient(circle at 50% 25%, rgb(245 240 230 / 70%), transparent 9rem),
    linear-gradient(180deg, rgb(63 104 116 / 20%), rgb(71 115 98 / 34%));
  box-shadow: inset 0 -2rem 0 rgb(29 26 23 / 14%);
}

.panorama-building {
  display: grid;
  position: relative;
  width: 22%;
  min-height: calc(5.5rem + var(--stage) * 1.05rem);
  place-items: center;
  padding: 0.6rem;
  clip-path: polygon(12% 100%, 12% 28%, 0 28%, 50% 0, 100% 28%, 88% 28%, 88% 100%);
  background:
    linear-gradient(
      180deg,
      color-mix(in srgb, var(--paper-card) calc(72% + var(--stage) * 4%), var(--mineral-blue)),
      color-mix(in srgb, var(--mineral-blue) calc(18% + var(--stage) * 7%), var(--paper-card))
    );
  color: var(--ink-primary);
  filter: drop-shadow(0 0.7rem 0.8rem rgb(29 26 23 / 18%));
  transition:
    min-height 400ms ease,
    filter 400ms ease;
}

.panorama-building b {
  font-family: "Noto Serif TC", "Songti TC", serif;
  font-size: 1.4rem;
}

.panorama-building i {
  position: absolute;
  bottom: 0.8rem;
  color: #d8a84d;
  font-style: normal;
  letter-spacing: 0.12em;
  text-shadow: 0 0 0.7rem #d8a84d;
}

.city-overview__buildings,
.ability-panel,
.journey-panel,
.current-chapter,
.weekly-goal {
  margin-top: 1.25rem;
}

.city-overview__buildings {
  padding-top: 2.5rem;
}

.city-overview__buildings .section-heading h2,
.ability-panel h2,
.journey-panel h2,
.weekly-goal h2 {
  margin: 0.25rem 0;
  font-family: "Noto Serif TC", "Songti TC", serif;
  font-size: clamp(1.7rem, 4vw, 2.7rem);
}

.city-building {
  background: var(--panel-background);
}

.city-building__scene {
  display: grid;
  position: relative;
  min-height: calc(7rem + var(--building-stage) * 0.45rem);
  place-items: center;
  overflow: hidden;
  border-radius: 1rem 0.25rem;
  background:
    radial-gradient(circle, rgb(216 168 77 / 12%), transparent 55%),
    color-mix(in srgb, var(--paper-card) 80%, var(--mineral-blue));
}

.city-building__scene .building-mark {
  z-index: 2;
  background: var(--panel-background-strong);
}

.city-building__tower {
  position: absolute;
  bottom: 0;
  width: 58%;
  height: calc(3.7rem + var(--building-stage) * 0.55rem);
  clip-path: polygon(8% 100%, 8% 25%, 0 25%, 50% 0, 100% 25%, 92% 25%, 92% 100%);
  background: color-mix(
    in srgb,
    var(--mineral-blue) calc(22% + var(--building-stage) * 9%),
    var(--paper-card)
  );
  transition: height 350ms ease;
}

.city-building__lights {
  position: absolute;
  bottom: 0.55rem;
  z-index: 2;
  color: #d8a84d;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-shadow: 0 0 0.65rem #d8a84d;
}

.building-knowledge {
  margin-top: 1rem;
  padding-top: 0.8rem;
  border-top: 1px dashed color-mix(in srgb, var(--ink-primary) 18%, transparent);
}

.building-knowledge h3 {
  margin: 0;
  font-size: 0.9rem;
}

.building-knowledge ul {
  display: grid;
  gap: 0.7rem;
  margin: 0.7rem 0 0;
  padding: 0;
  list-style: none;
}

.building-knowledge li span,
.building-knowledge p {
  display: block;
  margin: 0.2rem 0 0;
  color: var(--ink-muted);
  font-size: 0.82rem;
  line-height: 1.55;
}

.ability-panel,
.journey-panel,
.current-chapter,
.weekly-goal {
  width: 100%;
}

.ability-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}

.ability-card {
  padding: 1rem;
  border: 1px solid color-mix(in srgb, var(--ink-primary) 16%, transparent);
  border-radius: 1rem 0.25rem;
  background: var(--chip-background);
}

.ability-card > div:first-child {
  display: flex;
  gap: 0.5rem;
  justify-content: space-between;
}

.ability-card strong {
  color: var(--cinnabar);
}

.ability-track,
.class-mission__track {
  height: 0.65rem;
  margin-top: 0.8rem;
  overflow: hidden;
  border-radius: 999px;
  background: color-mix(in srgb, var(--ink-primary) 12%, transparent);
}

.ability-track span,
.class-mission__track span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--mineral-blue), var(--mineral-green));
}

.ability-card p {
  margin-bottom: 0;
  color: var(--ink-muted);
  font-size: 0.82rem;
}

.journey-track {
  display: grid;
  grid-template-columns: repeat(10, minmax(0, 1fr));
  gap: 0.35rem;
}

.journey-track span {
  display: grid;
  min-height: 2.4rem;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--ink-primary) 18%, transparent);
  border-radius: 0.55rem 0.15rem;
  color: var(--ink-muted);
  font-size: 0.78rem;
}

.journey-track span.is-story {
  border-style: dashed;
  color: var(--cinnabar);
}

.journey-track span.is-complete {
  border-color: var(--mineral-green);
  background: var(--mineral-green);
  color: #fff;
}

.journey-track span.is-complete.is-story {
  background: var(--cinnabar);
}

.next-unlock,
.class-mission {
  margin-top: 1rem;
  padding: 1rem;
  border: 1px solid color-mix(in srgb, var(--mineral-green) 38%, transparent);
  border-radius: 1rem 0.25rem;
  background: color-mix(in srgb, var(--mineral-green) 8%, transparent);
}

.next-unlock h3,
.class-mission h2 {
  margin: 0.3rem 0;
  font-family: "Noto Serif TC", "Songti TC", serif;
}

.goal-options button[aria-pressed="true"] {
  border-color: var(--cinnabar);
  background: var(--cinnabar);
  color: #fff8eb;
}

.city-growth-seal {
  display: grid;
  width: 3.5rem;
  aspect-ratio: 1;
  place-items: center;
  border: 2px solid var(--cinnabar);
  border-radius: 50% 44% 52% 46%;
  color: var(--cinnabar);
  font-family: "Noto Serif TC", "Songti TC", serif;
  font-size: 1.4rem;
  font-weight: 900;
  animation: cinnabar-seal 480ms ease both;
}

.reading-event-log ol {
  display: grid;
  gap: 0.7rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.reading-event-log li {
  display: grid;
  grid-template-columns: auto minmax(9rem, 0.8fr) minmax(12rem, 1.4fr);
  gap: 0.75rem;
  align-items: baseline;
  padding: 0.75rem 0;
  border-bottom: 1px dashed color-mix(in srgb, var(--ink-primary) 18%, transparent);
}

.reading-event-log time,
.reading-event-log q {
  color: var(--ink-muted);
}

.reading-event-log time {
  font-variant-numeric: tabular-nums;
}

@keyframes cinnabar-seal {
  from {
    opacity: 0;
    transform: scale(1.8) rotate(-12deg);
  }
}

@media (max-width: 63.99rem) {
  .reading-event-log li {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }

  .reading-controls {
    right: 0.75rem;
    left: auto;
    display: block;
    max-width: calc(100% - 1.5rem);
    padding: 0.35rem;
  }

  .reading-controls__toggle {
    display: block;
    min-height: 3rem;
    padding-inline: 0.8rem;
  }

  .reading-controls__panel {
    display: none;
  }

  .reading-controls[data-expanded="true"] {
    left: 0.75rem;
  }

  .reading-controls[data-expanded="true"] .reading-controls__panel {
    display: flex;
    gap: 0.4rem;
    align-items: center;
    margin-top: 0.35rem;
  }

  .reading-controls[data-expanded="true"] .mode-group,
  .reading-controls[data-expanded="true"] .font-size-group {
    display: flex;
  }

  .city-overview__hero {
    grid-template-columns: 1fr;
  }

  .city-panorama {
    min-height: 14rem;
  }
}

@media (max-width: 42rem) {
  .site-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    max-width: 12rem;
  }

  .city-overview,
  .city-view {
    width: min(100% - 1rem, 42rem);
  }

  .city-overview__hero {
    padding: 1.2rem;
  }

  .city-overview__hero h1 {
    font-size: clamp(2rem, 10vw, 2.7rem);
  }

  .city-panorama {
    min-height: 11rem;
    padding-inline: 0.4rem;
  }

  .panorama-building {
    min-height: calc(4rem + var(--stage) * 0.65rem);
  }

  .ability-grid {
    grid-template-columns: 1fr;
  }

  .journey-track {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .mentor-guide {
    grid-template-columns: 1fr;
  }
}

/* 2026-07-30：手機／平板優先的分級閱讀與家庭護照 */
.reading-chooser,
.level-recommendation,
.placement-sheet,
.family-hero,
.family-card,
.family-child-card {
  border: 1px solid color-mix(in srgb, var(--ink-primary) 18%, transparent);
  border-radius: 1.25rem;
}

.reading-chooser {
  display: grid;
  gap: 1.25rem;
}

.reading-level-choices,
.reading-mode-choices,
.placement-level-choices,
.family-card-actions,
.family-overview-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}

.reading-mode-choices {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.reading-choice {
  min-height: 5.5rem;
  padding: 0.9rem;
  text-align: left;
  border: 1px solid color-mix(in srgb, var(--ink-primary) 22%, transparent);
  border-radius: 1rem;
  background: color-mix(in srgb, var(--paper-primary) 88%, transparent);
}

.reading-choice strong,
.reading-choice small {
  display: block;
}

.reading-choice strong {
  margin-bottom: 0.35rem;
  font-size: 1.1rem;
}

.reading-choice.is-selected {
  color: var(--paper-primary);
  border-color: var(--cinnabar);
  background: var(--cinnabar);
  box-shadow: 0 0.55rem 1.2rem rgb(112 36 29 / 0.2);
}

.level-recommendation {
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem;
  background: color-mix(in srgb, var(--ochre-600) 15%, var(--paper-primary));
}

.level-recommendation > div:last-child {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.placement-link,
.route-level-badge {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  margin-top: 0.8rem;
}

.route-level-badge {
  min-height: auto;
  padding: 0.35rem 0.65rem;
  border: 1px solid color-mix(in srgb, var(--ochre-600) 60%, transparent);
  border-radius: 999px;
  color: var(--cinnabar);
  font-weight: 800;
}

.inline-term-button {
  min-height: 2.1rem;
  padding: 0 0.18rem;
  border: 0;
  border-bottom: 2px dotted var(--cinnabar);
  border-radius: 0.25rem;
  color: inherit;
  background: color-mix(in srgb, var(--ochre-600) 18%, transparent);
  font: inherit;
  font-weight: 800;
}

.inline-term-card {
  margin: 0.55rem 0 1rem;
  padding: 0.9rem;
  border-left: 0.3rem solid var(--cinnabar);
  border-radius: 0.75rem;
  background: color-mix(in srgb, var(--ochre-600) 13%, var(--paper-primary));
}

.inline-term-card[hidden] {
  display: none;
}

.inline-term-card p {
  margin: 0.35rem 0;
}

.inline-term-example {
  color: var(--ink-muted);
}

.inline-term-card button {
  min-height: 2.75rem;
  margin-top: 0.45rem;
}

.placement-view,
.family-view {
  width: min(100% - 2rem, 72rem);
  margin: 0 auto 6rem;
}

.placement-sheet {
  overflow: hidden;
  background: var(--paper-primary);
}

.placement-header,
.placement-reading-body,
.placement-form,
.placement-result {
  padding: clamp(1rem, 4vw, 2.2rem);
}

.placement-reading-body {
  max-width: 46rem;
  margin: 0 auto;
  font-size: calc(1.08rem * var(--reading-scale, 1));
  line-height: 1.9;
}

.placement-form {
  display: grid;
  gap: 1rem;
  background: color-mix(in srgb, var(--paper-primary) 88%, var(--ochre-600));
}

.placement-form fieldset {
  display: grid;
  gap: 0.55rem;
  padding: 1rem;
  border: 1px solid color-mix(in srgb, var(--ink-primary) 18%, transparent);
  border-radius: 1rem;
}

.placement-option {
  display: flex;
  gap: 0.65rem;
  align-items: flex-start;
  min-height: 3rem;
  padding: 0.7rem;
  border-radius: 0.75rem;
  background: color-mix(in srgb, var(--paper-primary) 86%, transparent);
}

.family-view {
  display: grid;
  gap: 1rem;
}

.family-hero,
.family-card,
.family-child-card {
  padding: clamp(1rem, 3vw, 1.6rem);
  background: color-mix(in srgb, var(--paper-primary) 94%, transparent);
}

.family-entry-grid,
.family-child-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.family-inline-form {
  display: grid;
  gap: 0.65rem;
}

.family-inline-form input {
  width: 100%;
  min-height: 3rem;
  padding: 0.7rem 0.8rem;
  border: 1px solid color-mix(in srgb, var(--ink-primary) 28%, transparent);
  border-radius: 0.7rem;
  font: inherit;
}

.family-passport-code {
  display: block;
  overflow-wrap: anywhere;
  margin: 1rem 0;
  padding: 1rem;
  border-radius: 0.8rem;
  background: #1b2a35;
  color: var(--paper-100);
  font-size: clamp(1.15rem, 4vw, 1.65rem);
  letter-spacing: 0.08em;
  text-align: center;
}

.family-child-card {
  position: relative;
}

.family-child-card.is-active {
  border-color: var(--cinnabar);
  box-shadow: inset 0.3rem 0 var(--cinnabar);
}

.family-child-badge {
  display: inline-flex;
  padding: 0.3rem 0.55rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--ochre-600) 20%, transparent);
  font-weight: 800;
}

.family-next-action {
  padding: 0.75rem;
  border-left: 0.25rem solid var(--ochre-600);
  background: color-mix(in srgb, var(--ochre-600) 11%, transparent);
}

.family-child-details {
  margin: 1rem 0;
}

.family-child-details summary {
  min-height: 2.75rem;
  cursor: pointer;
  font-weight: 800;
}

.family-status {
  min-height: 1.5em;
  color: var(--cinnabar);
  font-weight: 800;
}

.site-header {
  flex-wrap: wrap;
}

.family-sync-chip {
  flex: 1 0 100%;
  margin: -0.45rem 0 0;
  color: var(--ink-muted);
  font-size: 0.85rem;
  font-weight: 800;
  text-align: right;
}

.family-sync-chip[data-status="pending"],
.family-sync-chip[data-status="error"],
.family-sync-chip[data-status="conflict"] {
  color: var(--cinnabar);
}

.danger-action {
  border-color: var(--cinnabar);
  color: var(--cinnabar);
}

.equipment-card h3 {
  margin: 0.6rem 0;
}

.equipment-card.is-unlocked {
  border-color: var(--ochre-600);
  background: color-mix(in srgb, var(--ochre-600) 12%, var(--paper-primary));
}

.revision-strength {
  margin: 1rem 0 0;
  padding: 0.8rem;
  border-radius: 0.75rem;
  background: color-mix(in srgb, var(--ink-primary) 7%, transparent);
}

@media (max-width: 64rem) {
  .site-header {
    align-items: flex-start;
  }

  .site-nav {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    max-width: 27rem;
  }

  .site-nav a {
    min-height: 2.75rem;
    text-align: center;
  }

  .family-card-actions,
  .family-overview-actions {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 42rem) {
  .site-header {
    display: grid;
    gap: 0.8rem;
  }

  .site-nav {
    width: 100%;
    max-width: none;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .site-nav a {
    padding-inline: 0.35rem;
    font-size: 0.88rem;
  }

  .reading-level-choices,
  .reading-mode-choices,
  .placement-level-choices,
  .family-entry-grid,
  .family-child-grid {
    grid-template-columns: 1fr;
  }

  .reading-choice {
    min-height: 4.75rem;
  }

  .level-recommendation {
    align-items: stretch;
    flex-direction: column;
  }

  .level-recommendation > div:last-child {
    display: grid;
  }

  .placement-view,
  .family-view {
    width: min(100% - 1rem, 42rem);
  }
}