:root {
  color-scheme: light;
  --ink: #1f2937;
  --muted: #667085;
  --paper: #f6f8fc;
  --panel: #ffffff;
  --line: #e4e7ec;
  --blue: #1a73e8;
  --blue-dark: #1558b0;
  --green: #0b8f66;
  --red: #d4314f;
  --kun-bg: #d4314f;
  --kun-text: #ffffff;
  --kun-line: #a81f3f;
  --yellow: #fbbc04;
  --orange: #f97316;
  --navy: #172033;
  --cyan: #00acc1;
  --shadow: 0 2px 6px rgba(16, 24, 40, 0.10), 0 12px 24px rgba(16, 24, 40, 0.08);
  --shadow-hover: 0 4px 10px rgba(16, 24, 40, 0.13), 0 18px 34px rgba(16, 24, 40, 0.10);
  --font-main: "UD Digi Kyokasho N-R", "UD Digi Kyokasho NK-R", "BIZ UDPGothic", "Hiragino Sans", "Yu Gothic", "Meiryo", system-ui, sans-serif;
  --font-kanji: "UD Digi Kyokasho N-R", "UD Digi Kyokasho NK-R", "YuKyokasho", "Yu Kyokasho", "BIZ UDPMincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  touch-action: pan-x pan-y;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  font-family: var(--font-main);
  background:
    linear-gradient(135deg, rgba(26, 115, 232, 0.10), transparent 36%),
    linear-gradient(180deg, #f7f9ff 0%, #eef3fb 100%);
}

button {
  font: inherit;
  touch-action: pan-x pan-y;
  -webkit-tap-highlight-color: transparent;
}

a,
[role="button"],
.app-shell,
.screen,
.kanji-tile,
.choice-button {
  touch-action: pan-x pan-y;
}

.app-shell {
  width: min(100%, 1120px);
  min-height: 100vh;
  margin: 0 auto;
  padding: 12px;
}

.screen {
  display: none;
}

.screen.active {
  display: block;
}

.hero,
.result-hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  border: 1px solid rgba(228, 231, 236, 0.95);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(239, 246, 255, 0.96)),
    linear-gradient(90deg, rgba(26, 115, 232, 0.10), rgba(0, 172, 193, 0.10));
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--blue);
  font-size: 0.92rem;
  font-weight: 700;
}

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

h1,
h2,
h3 {
  font-weight: 900;
}

h1 {
  margin-bottom: 6px;
  font-size: clamp(2rem, 4.4vw, 3.2rem);
  line-height: 1.02;
}

.current-user-name {
  -webkit-appearance: none;
  appearance: none;
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  margin: 8px 0 0;
  padding: 4px 12px;
  border: 1px solid rgba(26, 115, 232, 0.20);
  border-radius: 999px;
  background: rgba(26, 115, 232, 0.08);
  color: var(--blue-dark);
  cursor: pointer;
  font: inherit;
  font-size: 1rem;
  font-weight: 900;
  line-height: 1.2;
  text-align: left;
  transition: background 160ms ease, border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.current-user-name:hover {
  border-color: rgba(26, 115, 232, 0.38);
  background: rgba(26, 115, 232, 0.14);
}

.current-user-name:focus-visible {
  outline: 3px solid rgba(26, 115, 232, 0.30);
  outline-offset: 3px;
}

.current-user-name:active {
  transform: translateY(1px);
}

.home-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-top: 8px;
}

.home-hero-actions .current-user-name {
  margin-top: 0;
}

.history-open {
  min-height: 42px;
  padding: 8px 14px;
  border: 1px solid rgba(11, 143, 102, 0.24);
  border-radius: 8px;
  background: rgba(11, 143, 102, 0.10);
  color: var(--green);
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 900;
  line-height: 1.2;
  transition: background 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.history-open:hover {
  border-color: rgba(11, 143, 102, 0.42);
  background: rgba(11, 143, 102, 0.16);
}

h2 {
  margin-bottom: 0;
  font-size: 2rem;
}

h3 {
  margin-bottom: 16px;
  font-size: 1.35rem;
}

.lead {
  max-width: 620px;
  margin-bottom: 0;
  color: #3c475c;
  font-size: 0.95rem;
  line-height: 1.45;
}

.hero-score {
  display: grid;
  place-items: center;
  width: 118px;
  min-width: 118px;
  aspect-ratio: 1;
  padding: 12px 10px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: #ffffff;
  box-shadow: var(--shadow);
  cursor: pointer;
  font: inherit;
  text-align: center;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.hero-score:hover {
  transform: translateY(-2px);
  border-color: rgba(26, 115, 232, 0.34);
  box-shadow: var(--shadow-hover);
}

.hero-score:focus-visible {
  outline: 3px solid rgba(26, 115, 232, 0.34);
  outline-offset: 4px;
}

.hero-score-label {
  max-width: 100%;
  font-size: 0.82rem;
  font-weight: 800;
  line-height: 1.18;
  white-space: nowrap;
}

.hero-score strong {
  color: var(--orange);
  font-size: 2.65rem;
  line-height: 0.9;
}

.section-head,
.quiz-topbar,
.result-actions,
.progress-info,
.badge-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.section-head {
  margin: 12px 0 10px;
}

.grade-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.home-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-start;
  align-items: center;
  margin-top: 22px;
}

.credits-link {
  margin-left: auto;
  min-height: 28px;
  padding: 2px 4px;
  border: 0;
  color: var(--muted);
  background: transparent;
  box-shadow: none;
  cursor: pointer;
  font-size: 0.76rem;
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.settings-link {
  min-height: 42px;
  padding: 8px 14px;
  border: 1px solid rgba(26, 115, 232, 0.22);
  border-radius: 8px;
  background: #eef5ff;
  box-shadow: 0 1px 3px rgba(16, 24, 40, 0.14);
  color: var(--blue);
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 900;
}

.settings-link:active,
.history-open:active,
.credits-link:active {
  transform: translateY(1px);
}

.settings-link:hover,
.credits-link:hover {
  color: var(--blue);
}

.history-panel {
  margin-top: 18px;
}

.history-panel-head {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.history-panel-head h3 {
  margin: 0;
}

.history-summary,
.history-page {
  color: var(--muted);
  font-weight: 900;
  white-space: nowrap;
}

.history-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  --history-list-columns:
    minmax(4.8rem, 0.72fr)
    minmax(7.8rem, 1.08fr)
    minmax(4rem, 0.58fr)
    minmax(4.1rem, 0.6fr)
    minmax(4.1rem, 0.6fr)
    minmax(4.3rem, 0.62fr)
    minmax(6.7rem, 1fr)
    minmax(6.2rem, 0.92fr)
    minmax(6.4rem, 0.96fr);
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 2px;
}

.history-table-head,
.history-row {
  display: grid;
  grid-template-columns: var(--history-list-columns);
  gap: clamp(6px, 0.8vw, 12px);
  align-items: center;
  box-sizing: border-box;
  width: 100%;
  min-width: 860px;
}

.history-table-head {
  padding: 0 14px;
  color: var(--muted);
  font-size: clamp(0.78rem, 0.88vw, 0.88rem);
  font-weight: 900;
}

.history-table-head span,
.history-row span {
  min-width: 0;
  overflow: hidden;
  text-overflow: clip;
  white-space: nowrap;
}

.history-table-head span:nth-child(-n + 3),
.history-row span:nth-child(-n + 3) {
  text-align: center;
}

.history-table-head span:nth-child(n + 4),
.history-row span:nth-child(n + 4) {
  text-align: right;
}

.history-row {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfdff;
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  font-weight: 900;
  text-align: left;
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.history-row:hover,
.history-row.is-selected {
  border-color: rgba(26, 115, 232, 0.36);
  box-shadow: 0 4px 12px rgba(16, 24, 40, 0.13);
}

.history-row.is-selected {
  background: #eef5ff;
}

.history-pager {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: center;
  margin-top: 14px;
}

.history-empty {
  margin: 0;
  color: var(--muted);
  font-weight: 800;
  line-height: 1.45;
}

.history-empty-nowrap {
  white-space: nowrap;
}

.history-detail-popup {
  position: fixed;
  inset: 0;
  z-index: 48;
  display: grid;
  place-items: center;
  padding: 22px;
  background: rgba(23, 32, 51, 0.42);
}

.history-detail-popup[hidden] {
  display: none;
}

.history-detail-panel {
  position: relative;
  width: min(100%, 920px);
  max-height: min(86vh, 820px);
  max-height: min(86svh, 820px);
  margin: 0;
  overflow: auto;
  box-shadow: 0 16px 44px rgba(16, 24, 40, 0.26);
}

.history-detail-panel h3 {
  margin-right: 52px;
}

.history-detail-close {
  position: absolute;
  top: 12px;
  right: 12px;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: #f8fbff;
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  font-size: 1.35rem;
  font-weight: 900;
}

.history-detail-panel h4 {
  margin: 0 0 10px;
  font-size: 1rem;
  font-weight: 900;
}

.history-detail-sections {
  display: grid;
  gap: 18px;
}

.history-question-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 10px;
}

.history-question-card {
  display: grid;
  gap: 4px;
  min-width: 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-left-width: 6px;
  border-radius: 8px;
  background: #fbfdff;
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  text-align: left;
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.history-question-card:hover {
  border-color: rgba(26, 115, 232, 0.32);
  box-shadow: 0 4px 12px rgba(16, 24, 40, 0.13);
}

.history-question-card:focus-visible {
  outline: 3px solid rgba(26, 115, 232, 0.34);
  outline-offset: 3px;
}

.history-question-card.is-correct {
  border-left-color: var(--green);
}

.history-question-card.is-wrong {
  border-left-color: var(--red);
}

.history-question-card strong {
  color: var(--navy);
  font-family: var(--font-kanji);
  font-size: 1.18rem;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.history-question-card span:not(.history-status) {
  color: var(--muted);
  font-weight: 900;
  overflow-wrap: anywhere;
}

.history-status {
  width: fit-content;
  padding: 2px 8px;
  border-radius: 999px;
  color: #ffffff;
  background: var(--green);
  font-size: 0.78rem;
  font-weight: 900;
}

.history-status-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}

.history-question-card.is-wrong .history-status {
  background: var(--red);
}

.history-question-card.is-unsure {
  border-top-color: rgba(251, 188, 4, 0.72);
}

.history-badge-grid,
.history-kanji-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.history-writing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.history-writing-kanji-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: flex-start;
  width: 100%;
  min-width: 0;
}

.history-kanji-tile {
  display: grid;
  place-items: center;
  min-width: 74px;
  min-height: 84px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfdff;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 900;
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.history-kanji-tile:hover {
  border-color: rgba(26, 115, 232, 0.32);
  box-shadow: 0 4px 12px rgba(16, 24, 40, 0.13);
}

.history-kanji-tile:focus-visible {
  outline: 3px solid rgba(26, 115, 232, 0.34);
  outline-offset: 3px;
}

.history-kanji-glyph {
  color: var(--navy);
  font-family: var(--font-kanji);
  font-size: 2rem;
  line-height: 1;
}

.history-writing-star-count {
  display: inline-flex;
  gap: 3px;
  align-items: center;
  color: #c77800;
}

.history-writing-kanji-link-tile {
  background: #f8fbff;
}

.history-writing-sample-tile {
  width: 84px;
  height: 84px;
  min-width: 84px;
  min-height: 84px;
  padding: 0;
  background:
    linear-gradient(90deg, transparent calc(50% - 0.5px), rgba(23, 32, 51, 0.14) calc(50% - 0.5px), rgba(23, 32, 51, 0.14) calc(50% + 0.5px), transparent calc(50% + 0.5px)),
    linear-gradient(0deg, transparent calc(50% - 0.5px), rgba(23, 32, 51, 0.14) calc(50% - 0.5px), rgba(23, 32, 51, 0.14) calc(50% + 0.5px), transparent calc(50% + 0.5px)),
    #ffffff;
  overflow: hidden;
}

.history-writing-sample-tile .writing-saved-svg {
  width: 100%;
  height: 100%;
}

.grade-card,
.panel,
.question-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.grade-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 152px;
  padding: 16px;
  text-align: left;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.grade-card:hover {
  transform: translateY(-2px);
  border-color: rgba(26, 115, 232, 0.34);
  box-shadow: var(--shadow-hover);
}

.choice-button:active,
.primary-button:active,
.secondary-button:active,
.ghost-button:active,
.icon-button:active {
  transform: translateY(1px);
  box-shadow: 0 1px 3px rgba(16, 24, 40, 0.18);
}

.grade-main {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.grade-main > span:last-child {
  min-width: 0;
}

.grade-card-head {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  justify-content: space-between;
}

.grade-number {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  color: #ffffff;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  font-size: 2rem;
  font-weight: 900;
  line-height: 1;
  box-shadow: 0 8px 18px rgba(26, 115, 232, 0.25);
}

.grade-title {
  display: block;
  margin: 0 0 4px;
  font-size: 1.2rem;
  font-weight: 900;
}

.grade-subtitle {
  display: block;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
}

.grade-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3px 8px;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.grade-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.grade-action-button {
  width: 100%;
  padding-right: 10px;
  padding-left: 10px;
}

.daily-kanji-action {
  grid-column: 1 / -1;
}

.grade-badge-button {
  --grade-badge-icon-offset: -5px;
  display: inline-grid;
  grid-template-columns: 36px auto;
  flex: 0 0 auto;
  align-items: center;
  justify-items: center;
  justify-content: center;
  gap: 3px;
  min-height: 52px;
  padding: 8px 12px;
  line-height: 1;
  white-space: nowrap;
  overflow: hidden;
}

.grade-badge-button.compact {
  min-height: 52px;
  padding: 8px 12px;
}

.grade-badge-label {
  display: grid;
  gap: 2px;
  justify-items: center;
  text-align: center;
}

.grade-badge-count {
  color: #52627a;
  font-size: 0.78rem;
  font-weight: 900;
}

.grade-badge-icon {
  display: inline-grid;
  place-items: center;
  width: 24px;
  min-width: 24px;
  height: 25px;
  overflow: visible;
  pointer-events: none;
}

.grade-badge-icon .badge-svg {
  width: 100%;
  height: 100%;
  transform: translateX(var(--grade-badge-icon-offset)) scale(1.5);
  transform-origin: center;
}

.badge-strip,
.badge-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 28px;
  padding: 4px 8px;
  border: 2px solid var(--navy);
  border-radius: 999px;
  background: #fff5c4;
  font-size: 0.78rem;
  font-weight: 900;
}

.badge-icon {
  display: inline-grid;
  place-items: center;
  width: 30px;
  min-width: 30px;
  height: 31px;
}

.badge-large {
  min-height: 46px;
  padding: 7px 13px 7px 10px;
  font-size: 1rem;
}

.badge-large .badge-icon {
  width: 42px;
  min-width: 42px;
  height: 43px;
}

.badge-button {
  font: inherit;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.badge-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(16, 24, 40, 0.16);
}

.badge-button:focus-visible {
  outline: 3px solid rgba(26, 115, 232, 0.34);
  outline-offset: 3px;
}

.badge-locked {
  border-color: #cfd6e3;
  background: #f7f9fc;
  color: #6b7280;
  box-shadow: none;
  opacity: 0.74;
}

.badge-locked .badge-icon {
  filter: grayscale(1);
}

.badge-popup {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(23, 32, 51, 0.42);
}

.badge-popup[hidden] {
  display: none;
}

.badge-popup-panel {
  position: relative;
  width: min(100%, 420px);
  padding: 30px 26px 28px;
  border: 1px solid rgba(228, 231, 236, 0.95);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 16px 44px rgba(16, 24, 40, 0.26);
  text-align: center;
}

.badge-popup-close {
  position: absolute;
  top: 12px;
  right: 12px;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: #f8fbff;
  color: var(--ink);
  font-size: 1.35rem;
  font-weight: 900;
  cursor: pointer;
}

.badge-popup-icon {
  display: grid;
  place-items: center;
  width: 112px;
  height: 116px;
  margin: 0 auto 12px;
}

.badge-popup-icon .badge-svg {
  width: 100%;
  height: 100%;
}

.badge-popup-panel h2 {
  margin-bottom: 12px;
  color: var(--navy);
  font-size: 2rem;
}

.badge-popup-detail {
  margin: 0;
  color: #344159;
  font-size: 1.14rem;
  font-weight: 900;
  line-height: 1.65;
}

.celebration-effect {
  position: fixed;
  inset: 0;
  z-index: 45;
  overflow: hidden;
  pointer-events: none;
}

.celebration-effect[hidden] {
  display: none;
}

.celebration-banner {
  position: absolute;
  top: 14%;
  left: 50%;
  min-width: min(84vw, 440px);
  padding: 16px 24px;
  border: 2px solid rgba(255, 255, 255, 0.92);
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(26, 115, 232, 0.96), rgba(0, 172, 193, 0.94));
  box-shadow: 0 16px 44px rgba(16, 24, 40, 0.24);
  color: #ffffff;
  font-size: clamp(1.35rem, 5vw, 2.5rem);
  font-weight: 900;
  text-align: center;
  transform: translateX(-50%);
  animation: celebrationBanner 3000ms ease both;
}

.celebration-burst {
  position: absolute;
  width: 0;
  height: 0;
  transform: translate(-50%, -50%);
}

.celebration-spark {
  position: absolute;
  top: 0;
  left: 0;
  width: var(--size);
  height: var(--size);
  border-radius: 999px;
  background: var(--color);
  box-shadow: 0 0 12px var(--color);
  animation: celebrationSpark 980ms cubic-bezier(0.18, 0.82, 0.36, 1) var(--delay) both;
}

.celebration-confetti {
  position: absolute;
  top: -18px;
  left: var(--left);
  width: 10px;
  height: 16px;
  border-radius: 3px;
  background: var(--color);
  animation: celebrationConfetti var(--duration) ease-in var(--delay) both;
}

@keyframes celebrationBanner {
  0% {
    opacity: 0;
    transform: translate(-50%, 12px) scale(0.88);
  }

  12%,
  78% {
    opacity: 1;
    transform: translate(-50%, 0) scale(1);
  }

  100% {
    opacity: 0;
    transform: translate(-50%, -12px) scale(0.96);
  }
}

@keyframes celebrationSpark {
  0% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(0.45);
  }

  78% {
    opacity: 1;
  }

  100% {
    opacity: 0;
    transform: translate(calc(-50% + var(--x)), calc(-50% + var(--y))) scale(0.15);
  }
}

@keyframes celebrationConfetti {
  0% {
    opacity: 0;
    transform: translateY(0) rotate(0);
  }

  10% {
    opacity: 1;
  }

  100% {
    opacity: 0;
    transform: translateY(105vh) rotate(var(--rotate));
  }
}

.badge-svg {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
  filter: drop-shadow(0 2px 2px rgba(16, 24, 40, 0.18));
}

.quiz-topbar {
  margin-bottom: 22px;
}

.icon-button,
.ghost-button,
.primary-button,
.secondary-button,
.choice-button {
  border: 1px solid transparent;
  border-radius: 8px;
  color: var(--ink);
  background: #ffffff;
  box-shadow: 0 1px 3px rgba(16, 24, 40, 0.14);
  cursor: pointer;
}

.icon-button {
  position: relative;
  display: inline-grid;
  place-items: center;
  width: 64px;
  height: 64px;
  font-size: 0;
  font-weight: 900;
}

.icon-button::before,
.icon-button::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  display: block;
  pointer-events: none;
}

.icon-button::before {
  width: 26px;
  height: 3px;
  border-radius: 999px;
  background: currentColor;
  transform: translate(-38%, -50%);
}

.icon-button::after {
  width: 14px;
  height: 14px;
  border-bottom: 3px solid currentColor;
  border-left: 3px solid currentColor;
  border-radius: 2px;
  transform: translate(-62%, -50%) rotate(45deg);
}

.ghost-button {
  padding: 12px 18px;
  font-weight: 900;
}

.quiz-meters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.pill-score {
  min-width: 118px;
  padding: 10px 16px;
  border: 3px solid #1d2a44;
  border-radius: 999px;
  text-align: center;
  font-weight: 900;
}

.pill-score {
  background: var(--yellow);
  font-size: 1.45rem;
}

.progress-wrap {
  margin-bottom: 22px;
}

.progress-info {
  margin-bottom: 8px;
  color: #344159;
  font-weight: 900;
}

.progress-track {
  height: 24px;
  overflow: hidden;
  border: 2px solid #1d2a44;
  border-radius: 999px;
  background: #ffffff;
}

.progress-bar {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--green), var(--yellow), var(--orange));
  transition: width 260ms ease;
}

.question-card {
  min-height: 245px;
  padding: 28px;
}

.type-chip {
  display: inline-flex;
  margin-bottom: 18px;
  padding: 8px 14px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: #ffffff;
  background: var(--blue);
  font-weight: 900;
}

.type-chip.is-on {
  color: #ffffff;
  background: var(--blue);
}

.type-chip.is-kun {
  border-color: var(--kun-line);
  color: var(--kun-text);
  background: var(--kun-bg);
}

.question-prompt {
  min-height: 1.34em;
  font-family: var(--font-kanji);
  font-size: clamp(2.5rem, 8vw, 5.7rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: 0;
}

.question-prompt.show-furigana {
  line-height: 1;
}

.prompt-content {
  display: inline-flex;
  align-items: flex-start;
  flex-wrap: wrap;
  max-width: 100%;
  line-height: 1;
  vertical-align: top;
}

.prompt-unit {
  display: inline-flex;
  flex: 0 0 auto;
  flex-direction: column;
  align-items: center;
  line-height: 1;
}

.prompt-unit.is-text,
.prompt-hint-unit {
  align-items: flex-start;
}

.prompt-reading {
  height: 1.08em;
  min-height: 1.08em;
  color: var(--blue);
  font-family: var(--font-main);
  font-size: 0.28em;
  font-weight: 900;
  letter-spacing: 0;
  line-height: 1;
  text-align: center;
  visibility: hidden;
  white-space: nowrap;
}

.question-prompt.show-furigana .prompt-reading.has-reading {
  visibility: visible;
}

.prompt-base {
  display: block;
  line-height: 1;
}

.prompt-kanji-hint {
  display: block;
  margin-left: 0.28em;
  color: rgba(75, 85, 99, 0.52);
  font-family: var(--font-kanji);
  font-size: 0.38em;
  font-weight: 900;
  line-height: 1;
  transform: translateY(0.28em);
  white-space: nowrap;
}

.question-note {
  margin: 18px 0 0;
  color: rgba(102, 112, 133, 0.82);
  font-size: 1.15rem;
  font-weight: 700;
}

.question-confidence {
  display: flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  margin: 14px 0 0 auto;
  padding: 8px 10px;
  border: 1px solid rgba(26, 115, 232, 0.22);
  border-radius: 8px;
  background: #f8fbff;
  color: rgba(102, 112, 133, 0.82);
  cursor: pointer;
  font-size: 0.98rem;
  font-weight: 900;
}

.question-confidence[hidden] {
  display: none;
}

.question-confidence input {
  width: 18px;
  height: 18px;
  accent-color: var(--blue);
}

.feedback {
  min-height: 56px;
  margin: 18px 0;
  padding: 12px 18px;
  border-radius: 8px;
  font-size: 1.35rem;
  font-weight: 900;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.feedback.show {
  opacity: 1;
  transform: translateY(0);
}

.feedback.correct {
  color: #075437;
  background: #dff8ec;
}

.feedback.wrong {
  color: #811429;
  background: #ffe0e7;
}

.choice-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.choice-button {
  min-height: 82px;
  padding: 11px 20px;
  text-align: left;
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 900;
  background: #ffffff;
}

.choice-button.correct {
  background: #bff1d7;
}

.choice-button.wrong {
  background: #ffc7d3;
}

.result-hero {
  display: block;
  text-align: center;
}

.result-score {
  margin: 12px 0 4px;
  color: var(--orange);
  font-size: clamp(4rem, 12vw, 8rem);
  font-weight: 900;
  line-height: 1;
}

.result-message {
  margin-bottom: 0;
  font-size: 1.55rem;
  font-weight: 900;
}

.result-time {
  margin: 8px 0 0;
  color: var(--blue-dark);
  font-size: 1.45rem;
  font-weight: 900;
}

.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin: 22px 0;
}

.result-actions {
  margin-top: 22px;
}

.result-actions button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
  transform: none;
}

.panel {
  padding: 22px;
}

.review-panel + .review-panel {
  margin-top: 22px;
}

.stats-list {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px 18px;
  margin: 0;
  font-weight: 800;
}

.stats-list dt {
  color: var(--muted);
}

.stats-list dd {
  margin: 0;
}

.stats-list dd.record-updated {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  color: var(--green);
  font-weight: 900;
}

.record-update-label {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 2px 8px;
  border: 1px solid rgba(11, 143, 102, 0.24);
  border-radius: 999px;
  background: rgba(11, 143, 102, 0.10);
  color: var(--green);
  font-size: 0.82rem;
  font-weight: 900;
}

.review-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr));
  gap: 10px;
}

.review-item {
  min-width: 0;
  padding: 12px 14px;
  border: 2px solid var(--line);
  border-radius: 8px;
  background: #fbfdff;
  color: var(--ink);
  font: inherit;
  font-weight: 800;
}

.review-question-item {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  align-items: center;
  cursor: pointer;
  text-align: left;
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.review-question-item:hover {
  border-color: rgba(26, 115, 232, 0.32);
  box-shadow: 0 4px 12px rgba(16, 24, 40, 0.13);
}

.review-question-item:focus-visible {
  outline: 3px solid rgba(26, 115, 232, 0.34);
  outline-offset: 3px;
}

.review-confidence-mark,
.history-confidence-mark {
  width: fit-content;
  padding: 2px 8px;
  border-radius: 999px;
  background: #fff4c2;
  color: #7a4b00;
  font-size: 0.78rem;
  font-weight: 900;
}

.review-question-item.is-unsure {
  border-color: rgba(251, 188, 4, 0.72);
}

.review-question-prompt {
  color: var(--navy);
  font-family: var(--font-kanji);
  font-size: 1.35rem;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.review-question-answer {
  color: var(--muted);
  font-size: 1rem;
  font-weight: 900;
  overflow-wrap: anywhere;
}

.review-item strong {
  font-weight: 900;
  line-height: 1.45;
}

.primary-button,
.secondary-button {
  min-height: 68px;
  padding: 14px 24px;
  font-size: 1.2rem;
  font-weight: 900;
}

.primary-button {
  color: #ffffff;
  background: var(--blue);
  box-shadow: 0 3px 10px rgba(26, 115, 232, 0.28);
}

.secondary-button {
  color: var(--blue);
  border-color: rgba(26, 115, 232, 0.22);
  background: #eef5ff;
}

.compact {
  min-height: 42px;
  padding: 8px 14px;
  font-size: 0.95rem;
}

.badge-header {
  margin-bottom: 22px;
  justify-content: flex-start;
}

#kanji-detail-screen .badge-header > div {
  min-width: 0;
  flex: 1 1 auto;
}

#radical-detail-screen .badge-header > div {
  min-width: 0;
}

#writing-practice-screen .badge-header > div {
  min-width: 0;
  flex: 1 1 auto;
}

.badge-summary {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 20px;
  padding: 22px;
  border: 3px solid #1d2a44;
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 7px 7px 0 rgba(29, 42, 68, 0.95);
  font-weight: 900;
}

.badge-summary strong {
  color: var(--orange);
  font-size: 4rem;
  line-height: 1;
}

.badge-stats-panel {
  margin-bottom: 0;
}

.badge-stats-panel h3 {
  margin-top: 0;
}

.badge-stats {
  grid-template-columns: repeat(4, auto 1fr);
  gap: 12px 18px;
}

.badge-catalog {
  display: grid;
  gap: 22px;
}

.badge-grade-section {
  display: grid;
  gap: 14px;
}

.badge-grade-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 18px;
  border: 3px solid #1d2a44;
  border-radius: 8px;
  background: #fff5c4;
  box-shadow: 5px 5px 0 rgba(29, 42, 68, 0.95);
}

.badge-grade-title h3 {
  margin: 0;
  font-size: 1.55rem;
}

.badge-grade-title span {
  font-size: 1.15rem;
  font-weight: 900;
}

.badge-grade-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.all-badges-section {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
}

.all-badge-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.all-badges-section > .badge-grade-title + .all-badge-list {
  margin-top: 16px;
}

.daily-badge-panel {
  display: grid;
  gap: 16px;
  margin: 26px 0 20px;
}

.badge-card {
  display: grid;
  grid-template-columns: 74px 1fr;
  gap: 16px;
  align-items: center;
  min-height: 132px;
  padding: 18px;
  border: 3px solid #1d2a44;
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 6px 6px 0 rgba(29, 42, 68, 0.95);
}

.badge-card.locked {
  color: #6e7788;
  background: #f3f6fb;
  box-shadow: 4px 4px 0 rgba(107, 117, 136, 0.55);
}

.badge-card-icon {
  display: grid;
  place-items: center;
  width: 74px;
  aspect-ratio: 1;
}

.badge-card-icon .badge-svg {
  width: 74px;
  height: 76px;
  filter: drop-shadow(0 5px 0 rgba(29, 42, 68, 0.22));
}

.badge-card.locked .badge-card-icon {
  opacity: 0.74;
  filter: saturate(0.82);
}

.badge-card h3 {
  margin-bottom: 6px;
}

.badge-card p {
  margin-bottom: 10px;
  color: var(--muted);
  font-weight: 800;
  line-height: 1.45;
}

.badge-card span {
  display: inline-flex;
  padding: 5px 9px;
  border-radius: 999px;
  color: #075437;
  background: #dff8ec;
  font-weight: 900;
}

.badge-card.locked span {
  color: #5f6878;
  background: #e2e8f1;
}

.kanji-list-summary {
  margin-bottom: 14px;
  padding: 14px 18px;
  border: 2px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  color: var(--muted);
  font-weight: 900;
}

.kanji-list-filter-summary,
.radical-list-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.kanji-reading-filter,
.radical-name-filter {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  color: var(--ink);
  font-size: 0.9rem;
  white-space: nowrap;
}

.kanji-reading-filter input,
.radical-name-filter input {
  width: min(240px, 42vw);
  min-height: 40px;
  padding: 8px 10px;
  border: 1px solid rgba(26, 115, 232, 0.24);
  border-radius: 8px;
  background: #f8fbff;
  color: var(--ink);
  font: inherit;
  font-weight: 800;
}

.kanji-reading-filter input:focus-visible,
.radical-name-filter input:focus-visible {
  outline: 3px solid rgba(26, 115, 232, 0.28);
  outline-offset: 2px;
  border-color: var(--blue);
}

.kanji-empty,
.radical-empty {
  grid-column: 1 / -1;
  margin: 0;
}

.kanji-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(88px, 1fr));
  gap: 12px;
}

.daily-kanji-nav {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  margin: 14px 0;
}

.daily-kanji-nav .secondary-button {
  width: 100%;
}

.daily-kanji-nav .secondary-button:last-child {
  justify-self: end;
}

.daily-kanji-date {
  min-width: 112px;
  color: var(--muted);
  font-weight: 900;
  text-align: center;
  white-space: nowrap;
}

.daily-kanji-panel {
  position: relative;
  margin: 12px 0 16px;
}

.daily-kanji-complete {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 4;
  display: grid;
  place-items: center;
  width: 72px;
  height: 72px;
  border: 3px solid #ffffff;
  border-radius: 999px;
  background: linear-gradient(135deg, #20a45b 0%, #1a73e8 100%);
  color: #ffffff;
  box-shadow: 0 10px 22px rgba(26, 115, 232, 0.26), 0 0 0 4px rgba(41, 171, 103, 0.16);
  pointer-events: none;
}

.daily-kanji-complete[hidden] {
  display: none;
}

.daily-kanji-complete-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 18px;
}

.daily-kanji-complete-badges[hidden] {
  display: none;
}

.daily-kanji-complete::before {
  content: none;
}

.daily-kanji-complete::after {
  content: none;
}

.daily-kanji-complete-mark {
  position: relative;
  z-index: 1;
  font-size: 3.75rem;
  font-weight: 900;
  line-height: 0.9;
  text-shadow: 0 2px 0 rgba(18, 79, 126, 0.28);
}

.daily-kanji-panel-head {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  align-items: center;
  min-height: 44px;
  margin-bottom: 16px;
}

.daily-kanji-summary {
  justify-self: center;
  width: min(100%, calc(100% - 300px));
  color: var(--blue-dark);
  font-size: 1.05rem;
  font-weight: 900;
  text-align: center;
}

.daily-kanji-actions {
  position: absolute;
  top: 50%;
  right: 0;
  transform: translateY(-50%);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.daily-kanji-start-button,
.daily-kanji-challenge-button,
.daily-kanji-writing-button {
  min-width: 132px;
}

.daily-kanji-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(136px, 180px));
  gap: 16px;
  justify-content: center;
}

.daily-kanji-tile {
  justify-self: center;
  width: 100%;
  max-width: 180px;
  font-size: clamp(4rem, 10vw, 6.2rem);
}

.daily-kanji-empty {
  grid-column: 1 / -1;
}

.kanji-detail-radical-value {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
}

.kanji-detail-radical-label {
  line-height: 1.2;
}

.radical-link-button {
  min-height: 36px;
  min-width: 56px;
  padding: 6px 16px;
  border: 1px solid rgba(26, 115, 232, 0.24);
  border-radius: 8px;
  background: #eef5ff;
  color: var(--blue);
  cursor: pointer;
  font: inherit;
  font-weight: 900;
  line-height: 1.2;
}

.radical-link-button:hover {
  border-color: rgba(26, 115, 232, 0.42);
  background: #e1efff;
}

.radical-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
}

.radical-grade-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 12px;
  padding: 12px;
  border: 2px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.kanji-grade-filters[hidden] {
  display: none;
}

.radical-grade-filter {
  flex: 1 1 84px;
  min-height: 40px;
  padding: 8px 14px;
  border: 1px solid rgba(26, 115, 232, 0.22);
  border-radius: 8px;
  background: #f8fbff;
  color: var(--blue);
  cursor: pointer;
  font: inherit;
  font-weight: 900;
  line-height: 1.2;
  text-align: center;
  transition: background 160ms ease, border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.radical-grade-filter:hover {
  border-color: rgba(26, 115, 232, 0.44);
  background: #eef5ff;
}

.radical-grade-filter.is-active {
  border-color: var(--blue);
  background: var(--blue);
  color: #ffffff;
  box-shadow: 0 3px 10px rgba(26, 115, 232, 0.22);
}

.radical-tile {
  display: grid;
  grid-template-rows: minmax(88px, 1fr) auto;
  gap: 6px;
  align-items: center;
  justify-items: center;
  min-height: 178px;
  padding: 12px;
  border: 2px solid #1d2a44;
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 3px 3px 0 rgba(29, 42, 68, 0.88);
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  text-align: center;
  transition: transform 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.radical-tile:hover {
  transform: translateY(-2px);
  background: #f8fbff;
  box-shadow: 5px 5px 0 rgba(29, 42, 68, 0.82);
}

.radical-tile-svg {
  display: grid;
  place-items: center;
  width: 88px;
  aspect-ratio: 1;
}

.radical-tile span:not(.radical-tile-svg) {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 900;
  line-height: 1.25;
}

.radical-svg {
  display: block;
  width: 100%;
  height: 100%;
}

.radical-svg-fallback {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  color: var(--navy);
  font-family: var(--font-kanji);
  font-size: 3rem;
  font-weight: 900;
}

.radical-detail-layout {
  display: grid;
  grid-template-columns: minmax(220px, 0.8fr) minmax(0, 1.2fr);
  gap: 18px;
  margin-top: 18px;
}

.radical-visual-panel {
  display: grid;
  gap: 12px;
  justify-items: center;
}

.radical-detail-svg {
  display: grid;
  place-items: center;
  width: min(100%, 300px);
  aspect-ratio: 1;
  border: 2px solid #1d2a44;
  border-radius: 8px;
  background: #ffffff;
}

.radical-detail-stroke {
  width: 86%;
  height: 86%;
}

.radical-facts-panel {
  display: grid;
  min-width: 0;
}

.radical-detail-facts {
  display: grid;
  grid-template: repeat(3, max-content) minmax(0, 1fr) / 1fr;
  gap: 14px;
  height: 100%;
}

.radical-detail-facts div {
  display: grid;
  align-content: start;
  gap: 5px;
}

.radical-detail-facts dt {
  color: var(--muted);
  font-weight: 900;
  line-height: 1.5;
  white-space: nowrap;
}

.radical-detail-facts dd {
  margin: 0;
  font-weight: 900;
  line-height: 1.5;
}

.radical-same-panel {
  margin-top: 18px;
}

.radical-kanji-grid {
  display: grid;
  gap: 14px;
}

.radical-grade-section h4 {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 1rem;
  font-weight: 900;
}

.radical-kanji-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(74px, 1fr));
  gap: 10px;
}

.radical-kanji-tile {
  display: grid;
  place-items: center;
  overflow: hidden;
  aspect-ratio: 1;
  padding: 0;
  border: 2px solid #1d2a44;
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 2px 2px 0 rgba(29, 42, 68, 0.88);
  cursor: pointer;
}

.radical-kanji-tile:hover {
  background: #f8fbff;
}

.kanji-static-svg-wrap.radical-kanji-svg {
  display: grid;
  place-items: center;
  width: 86%;
  height: 86%;
}

.radical-kanji-svg .stroke-order-svg {
  width: 100%;
  height: 100%;
}

.kanji-tile {
  position: relative;
  display: -webkit-box;
  display: -webkit-flex;
  display: flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
  align-items: center;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
  justify-content: center;
  place-items: center;
  overflow: hidden;
  aspect-ratio: 1;
  padding: 0;
  border: 2px solid #1d2a44;
  border-radius: 8px;
  background: #ffffff;
  color: var(--ink);
  box-shadow: 3px 3px 0 rgba(29, 42, 68, 0.88);
  font-family: var(--font-kanji);
  font-size: clamp(3.05rem, 6.5vw, 4.25rem);
  font-weight: 900;
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.kanji-tile-number {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
  min-width: 27px;
  height: 21px;
  padding: 0 5px;
  border: 0 solid #9fc4f3;
  border-right-width: 1px;
  border-bottom-width: 1px;
  border-radius: 5px 0 7px 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #d7e9ff;
  color: #245e9f;
  font-family: var(--font-main);
  font-size: 0.72rem;
  font-weight: 900;
  line-height: 1;
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease;
}

.kanji-tile.is-visited .kanji-tile-number {
  border-color: #1558b0;
  background: var(--blue);
  color: #ffffff;
}

.kanji-tile-glyph {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  inset: 0;
  z-index: 2;
  display: -webkit-box;
  display: -webkit-flex;
  display: flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
  align-items: center;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  font-size: 1em;
  line-height: 1;
  text-align: center;
}

.kanji-tile-writing-stars {
  position: absolute;
  right: 0;
  bottom: 0;
  z-index: 1;
  display: inline-flex;
  gap: 2px;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 23px;
  padding: 0 6px;
  border: 1px solid rgba(199, 120, 0, 0.34);
  border-radius: 7px 0 5px 0;
  background: rgba(255, 248, 221, 0.94);
  color: #a05a00;
  box-shadow: 0 2px 5px rgba(16, 24, 40, 0.14);
  font-family: var(--font-main);
  font-size: 0.76rem;
  font-weight: 900;
  line-height: 1;
  pointer-events: none;
}

.kanji-static-svg-wrap {
  display: block;
  color: #111827;
}

.kanji-static-svg-wrap svg {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.kanji-static-svg-wrap path {
  fill: none !important;
  stroke: #111827 !important;
  stroke-width: 4.2 !important;
  stroke-linecap: round !important;
  stroke-linejoin: round !important;
}

.kanji-static-svg-wrap text {
  display: none;
}

.kanji-tile-svg {
  width: 78%;
  height: 78%;
}

.kanji-static-fallback {
  font-family: var(--font-kanji);
}

.kanji-tile:hover {
  background: #fff5c4;
  transform: translateY(-2px);
}

.kanji-tile:active {
  transform: translateY(1px);
  box-shadow: 1px 1px 0 rgba(29, 42, 68, 0.88);
}

.kanji-detail-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.85fr) minmax(360px, 1.15fr);
  gap: 18px;
  align-items: start;
}

#kanji-detail-screen {
  padding-bottom: 78px;
}

#radical-detail-screen {
  padding-bottom: 78px;
}

.kanji-detail-main {
  display: grid;
  gap: 18px;
  text-align: center;
}

.kanji-detail-char {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  min-height: 220px;
  border: 3px solid #1d2a44;
  border-radius: 8px;
  background: #ffffff;
  font-family: var(--font-kanji);
  font-size: clamp(6rem, 16vw, 11rem);
  font-weight: 900;
  line-height: 1;
}

.kanji-detail-char::before,
.stroke-order-view::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 0;
  pointer-events: none;
}

.kanji-detail-char::before {
  background:
    linear-gradient(90deg, transparent calc(50% - 1px), rgba(26, 115, 232, 0.14) calc(50% - 1px), rgba(26, 115, 232, 0.14) calc(50% + 1px), transparent calc(50% + 1px)),
    linear-gradient(0deg, transparent calc(50% - 1px), rgba(26, 115, 232, 0.14) calc(50% - 1px), rgba(26, 115, 232, 0.14) calc(50% + 1px), transparent calc(50% + 1px));
}

.kanji-detail-number {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 3;
  min-width: 42px;
  height: 30px;
  padding: 0 11px;
  border: 1px solid #d7dee9;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(248, 250, 252, 0.96);
  color: #52627a;
  font-family: var(--font-main);
  font-size: 0.95rem;
  font-weight: 900;
  line-height: 1;
}

.kanji-detail-char-glyph {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 2;
  display: -webkit-box;
  display: -webkit-flex;
  display: flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
  align-items: center;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  line-height: 1;
  text-align: center;
}

.kanji-detail-svg {
  width: min(84%, 205px);
  height: min(84%, 205px);
}

.kanji-detail-facts {
  display: grid;
  gap: 10px;
  margin: 0;
  text-align: left;
}

.kanji-detail-facts div {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  border: 2px solid var(--line);
  border-radius: 8px;
  background: #fbfdff;
}

.kanji-detail-facts dt {
  color: var(--muted);
  font-weight: 900;
}

.kanji-detail-facts dd {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 900;
}

.radical-detail-facts div {
  grid-template-columns: 7.5rem minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  align-content: start;
}

.radical-detail-facts dt {
  padding-top: 0.24rem;
  white-space: nowrap;
}

.kanji-question-panel {
  margin-top: 18px;
}

.kanji-question-head {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.kanji-question-title-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  align-items: center;
  min-width: 0;
}

.kanji-question-head h3 {
  margin: 0;
}

.kanji-question-count {
  color: var(--muted);
  font-weight: 900;
  white-space: nowrap;
}

.kanji-challenge-button {
  flex: 0 0 auto;
}

.kanji-challenge-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
  transform: none;
}

.kanji-question-list {
  display: grid;
  gap: 10px;
}

.kanji-question-row {
  display: grid;
  grid-template-columns: 7rem minmax(0, 1fr) minmax(8rem, auto);
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfdff;
}

.kanji-question-type {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 7px 10px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: #ffffff;
  font-size: 0.92rem;
  font-weight: 900;
  white-space: nowrap;
}

.kanji-question-type.is-on {
  background: var(--blue);
}

.kanji-question-type.is-kun {
  border-color: var(--kun-line);
  color: var(--kun-text);
  background: var(--kun-bg);
}

.kanji-question-body {
  min-width: 0;
}

.kanji-question-prompt {
  min-width: 0;
  font-family: var(--font-kanji);
  font-size: clamp(1.55rem, 3vw, 2.2rem);
  font-weight: 900;
  line-height: 1;
}

.kanji-question-prompt .prompt-reading {
  height: 1.18em;
  min-height: 1.18em;
  font-size: max(0.5em, 0.86rem);
  line-height: 1.05;
}

.kanji-question-prompt .prompt-reading.has-reading {
  visibility: visible;
}

.kanji-question-hint {
  display: inline-flex;
  margin-left: 0;
  color: rgba(75, 85, 99, 0.58);
  font-family: var(--font-kanji);
  font-size: 1em;
  vertical-align: top;
}

.kanji-question-hint .prompt-reading {
  color: rgba(75, 85, 99, 0.72);
}

.kanji-question-meaning {
  margin: 8px 0 0;
  color: rgba(102, 112, 133, 0.82);
  font-size: 0.96rem;
  font-weight: 800;
  line-height: 1.35;
}

.kanji-question-answer {
  display: grid;
  gap: 3px;
  justify-items: end;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 900;
  white-space: nowrap;
}

.kanji-question-answer strong {
  color: var(--ink);
  font-size: 1.15rem;
}

.kanji-question-empty {
  margin: 0;
  color: var(--muted);
  font-weight: 800;
}

.kanji-detail-nav {
  display: grid;
  grid-template-columns: auto auto auto;
  gap: 8px;
  align-items: center;
  margin-left: auto;
}

.kanji-detail-nav .secondary-button {
  min-height: 44px;
  padding: 8px 12px;
  font-weight: 900;
  white-space: nowrap;
}

.kanji-detail-nav .secondary-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
  transform: none;
}

.kanji-detail-daily-writing {
  margin-left: auto;
  white-space: nowrap;
}

.kanji-detail-floating-nav {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 20;
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: flex-end;
  padding: 8px;
  border: 1px solid rgba(202, 210, 225, 0.86);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.kanji-detail-floating-nav .secondary-button {
  min-height: 42px;
  padding: 8px 12px;
  font-size: 0.9rem;
  font-weight: 900;
  white-space: nowrap;
}

.kanji-detail-floating-nav .secondary-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
  transform: none;
}

.kanji-detail-floating-nav .kanji-detail-position {
  flex: 0 0 auto;
}

.kanji-detail-position {
  min-width: 72px;
  color: var(--muted);
  font-size: 1rem;
  font-weight: 900;
  text-align: center;
}

@media (min-width: 1120px) {
  .kanji-detail-floating-nav {
    right: calc((100vw - 1120px) / 2 + 16px);
  }
}

.stroke-panel-head {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.stroke-panel h3 {
  margin: 0;
}

.stroke-action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.stroke-tool-button {
  min-height: 44px;
  padding: 8px 14px;
  font-size: 0.95rem;
  white-space: nowrap;
}

.stroke-animate-button {
  border-color: rgba(26, 115, 232, 0.24);
  background: #e8f1ff;
  color: var(--blue);
}

.stroke-radical-button {
  border-color: rgba(216, 27, 96, 0.25);
  background: #fff0f6;
  color: #c2185b;
}

.stroke-radical-button.is-active {
  border-color: rgba(216, 27, 96, 0.58);
  background: #d81b60;
  color: #ffffff;
  box-shadow: 0 10px 20px rgba(216, 27, 96, 0.22);
}

.stroke-tool-button:disabled {
  cursor: wait;
  opacity: 0.72;
}

.stroke-order-view {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 420px;
  border: 3px solid #1d2a44;
  border-radius: 8px;
  background: #ffffff;
  overflow: hidden;
}

.stroke-order-view::before {
  background:
    linear-gradient(90deg, transparent calc(50% - 1px), rgba(23, 32, 51, 0.10) calc(50% - 1px), rgba(23, 32, 51, 0.10) calc(50% + 1px), transparent calc(50% + 1px)),
    linear-gradient(0deg, transparent calc(50% - 1px), rgba(23, 32, 51, 0.10) calc(50% - 1px), rgba(23, 32, 51, 0.10) calc(50% + 1px), transparent calc(50% + 1px));
}

.stroke-order-view svg {
  position: relative;
  z-index: 1;
  width: min(92%, 430px);
  height: auto;
}

.stroke-order-view path {
  vector-effect: non-scaling-stroke;
  transition: stroke 160ms ease, opacity 160ms ease;
}

.stroke-order-view text {
  paint-order: stroke;
  stroke: #ffffff;
  stroke-width: 2px;
}

.stroke-placeholder {
  position: relative;
  z-index: 1;
  color: var(--muted);
  font-family: var(--font-kanji);
  font-size: 9rem;
  font-weight: 900;
}

.stroke-note {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 1.08rem;
  font-weight: 900;
  line-height: 1.25;
  text-align: center;
}

.stroke-practice-action {
  display: flex;
  justify-content: center;
  margin-top: 14px;
}

.writing-practice-open {
  min-width: 180px;
}

#writing-practice-screen {
  --writing-area-size: min(500px, calc(100vh - 250px));
  --writing-area-size: min(500px, calc(100svh - 250px));
  padding-bottom: 72px;
}

.writing-practice-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  align-items: stretch;
}

.writing-stroke-panel {
  min-width: 0;
  height: 100%;
  margin-bottom: 0;
  box-sizing: border-box;
}

.writing-stroke-view {
  width: 100%;
  max-width: var(--writing-area-size);
  margin-right: auto;
  margin-left: auto;
  min-height: 0;
  aspect-ratio: 1;
}

#writing-practice-screen .writing-stroke-view {
  min-height: 0;
}

.writing-stroke-view svg {
  width: min(88%, 360px);
}

.writing-practice-grid {
  display: grid;
  grid-template-rows: 1fr;
  min-width: 0;
  height: 100%;
}

.writing-daily-challenge-action {
  display: flex;
  justify-content: flex-end;
  margin-top: 12px;
}

.writing-daily-challenge-action[hidden] {
  display: none;
}

.writing-daily-challenge-action .primary-button {
  min-width: 160px;
}

.writing-daily-challenge-action .primary-button:disabled,
#writing-practice-screen .kanji-detail-nav .secondary-button:disabled,
#writing-practice-screen .kanji-detail-floating-nav .secondary-button:disabled {
  color: #7d8798;
  border-color: #d6dde8;
  background: #eef2f7;
  box-shadow: none;
  cursor: not-allowed;
  opacity: 1;
  transform: none;
}

.writing-saved-panel {
  width: 100%;
  margin-top: 14px;
}

.writing-saved-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.writing-saved-panel-head h3 {
  margin: 0;
}

.writing-practice-areas {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  height: 100%;
}

.writing-practice-card {
  display: grid;
  gap: 0;
  height: 100%;
  box-sizing: border-box;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.writing-stroke-panel .stroke-panel-head,
.writing-practice-head {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  min-height: 44px;
  margin-bottom: 12px;
}

#writing-practice-screen .stroke-panel-head h3,
#writing-practice-screen .writing-practice-head h3 {
  margin: 0;
  line-height: 1.2;
}

.writing-practice-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  justify-content: flex-end;
}

#writing-practice-screen .writing-practice-actions .compact {
  min-height: 44px;
}

.writing-draft-toggle.is-active {
  border-color: rgba(26, 115, 232, 0.42);
  background: #e8f1ff;
  color: var(--blue);
}

.writing-clear-button {
  border-color: rgba(234, 67, 53, 0.24);
  background: #fff1f0;
  color: #b3261e;
}

.writing-undo-button {
  border-color: rgba(26, 115, 232, 0.20);
  background: #f8fbff;
  color: var(--blue-dark);
}

.writing-undo-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
  transform: none;
}

.writing-done-button {
  background: linear-gradient(135deg, #fbbc04, #f97316);
  box-shadow: 0 3px 8px rgba(249, 115, 22, 0.24);
  color: #ffffff;
}

.writing-practice-area .writing-done-button {
  position: absolute;
  right: 10px;
  bottom: 10px;
  z-index: 4;
  min-width: 84px;
  min-height: 42px;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.98rem;
  box-shadow: 0 5px 12px rgba(249, 115, 22, 0.28);
}

.writing-done-button.is-celebrating {
  animation: writingDoneButtonPop 520ms ease both;
}

.writing-done-button:disabled {
  cursor: not-allowed;
  opacity: 0.46;
  transform: none;
  box-shadow: none;
}

.writing-practice-area {
  position: relative;
  width: 100%;
  max-width: var(--writing-area-size);
  margin-right: auto;
  margin-bottom: 12px;
  margin-left: auto;
  aspect-ratio: 1;
  min-height: 0;
  border: 3px solid #1d2a44;
  border-radius: 8px;
  background: #ffffff;
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

.writing-practice-area *,
#writing-practice-screen .badge-header > div,
#writing-practice-screen .badge-header > div *,
#writing-practice-screen .kanji-detail-nav,
#writing-practice-screen .kanji-detail-nav *,
#writing-practice-screen .writing-practice-floating-nav,
#writing-practice-screen .writing-practice-floating-nav *,
#writing-practice-screen button,
#writing-practice-screen button *,
#writing-practice-screen .stroke-panel-head,
#writing-practice-screen .stroke-panel-head *,
#writing-practice-screen .stroke-note,
#writing-practice-screen .stroke-order-view svg,
#writing-practice-screen .stroke-order-view text,
#writing-practice-screen .writing-practice-head,
#writing-practice-screen .writing-practice-head *,
#writing-practice-screen .writing-practice-actions,
#writing-practice-screen .writing-practice-actions *,
.writing-star-tray,
.writing-star-tray *,
.writing-saved-panel,
.writing-saved-panel *,
.writing-saved-grid,
.writing-saved-grid * {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -webkit-user-drag: none;
  user-select: none;
}

.writing-practice-area::before {
  position: absolute;
  inset: 0;
  content: "";
  background:
    linear-gradient(90deg, transparent calc(50% - 1px), rgba(23, 32, 51, 0.10) calc(50% - 1px), rgba(23, 32, 51, 0.10) calc(50% + 1px), transparent calc(50% + 1px)),
    linear-gradient(0deg, transparent calc(50% - 1px), rgba(23, 32, 51, 0.10) calc(50% - 1px), rgba(23, 32, 51, 0.10) calc(50% + 1px), transparent calc(50% + 1px));
  pointer-events: none;
}

.writing-draft-svg {
  position: absolute;
  inset: 8%;
  z-index: 1;
  display: grid;
  place-items: center;
  pointer-events: none;
}

.writing-draft-svg[hidden] {
  display: none;
}

.writing-draft-svg svg {
  width: 100%;
  height: 100%;
}

.writing-draft-svg path {
  stroke: #aeb8c6 !important;
  stroke-width: 3.4 !important;
  opacity: 0.48;
  filter: none !important;
  vector-effect: non-scaling-stroke;
}

.writing-draft-svg text {
  fill: #8f99aa !important;
  paint-order: stroke;
  stroke: #ffffff !important;
  stroke-width: 1.8px !important;
  font-weight: 900;
  opacity: 0.78;
}

.writing-canvas {
  position: absolute;
  inset: 0;
  z-index: 2;
  width: 100%;
  height: 100%;
  cursor: crosshair;
  touch-action: none;
  -webkit-user-drag: none;
}

.writing-star-tray {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 2px 4px 0;
}

.writing-star {
  position: relative;
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  color: #fbbc04;
  font-size: 1.45rem;
  line-height: 1;
  text-shadow:
    0 2px 0 #ffffff,
    0 3px 8px rgba(249, 115, 22, 0.30);
}

.writing-star.is-new {
  animation: writingStarPop 760ms cubic-bezier(0.18, 0.82, 0.24, 1.22) both;
}

.writing-star.is-new::after {
  position: absolute;
  inset: -6px;
  border: 2px solid rgba(251, 188, 4, 0.54);
  border-radius: 999px;
  content: "";
  animation: writingStarRing 680ms ease-out both;
}

.writing-star-summary {
  position: relative;
  display: inline-flex;
  gap: 5px;
  align-items: center;
  justify-content: center;
  min-width: 64px;
  min-height: 32px;
  padding: 3px 12px;
  border: 1px solid rgba(199, 120, 0, 0.32);
  border-radius: 999px;
  background: #fff8dd;
  color: #c77800;
  box-shadow: 0 2px 7px rgba(249, 115, 22, 0.16);
  font-size: 1.16rem;
  font-weight: 900;
  line-height: 1;
  text-shadow: 0 1px 0 #ffffff;
}

.writing-star-summary.is-new {
  animation: writingStarPop 760ms cubic-bezier(0.18, 0.82, 0.24, 1.22) both;
}

.writing-star-summary.is-new::after {
  position: absolute;
  inset: -6px;
  border: 2px solid rgba(251, 188, 4, 0.44);
  border-radius: 999px;
  content: "";
  animation: writingStarRing 680ms ease-out both;
}

.writing-saved-grid {
  --writing-saved-size: clamp(108px, 27vw, 132px);
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(var(--writing-saved-size), var(--writing-saved-size)));
  gap: 10px;
  justify-content: start;
  width: 100%;
  min-height: calc(var(--writing-saved-size) + 4px);
  touch-action: pan-y;
}

.writing-saved-tile {
  appearance: none;
  display: grid;
  place-items: center;
  width: var(--writing-saved-size);
  aspect-ratio: 1;
  padding: 0;
  border: 2px solid #1d2a44;
  border-radius: 8px;
  background:
    linear-gradient(90deg, transparent calc(50% - 0.5px), rgba(23, 32, 51, 0.14) calc(50% - 0.5px), rgba(23, 32, 51, 0.14) calc(50% + 0.5px), transparent calc(50% + 0.5px)),
    linear-gradient(0deg, transparent calc(50% - 0.5px), rgba(23, 32, 51, 0.14) calc(50% - 0.5px), rgba(23, 32, 51, 0.14) calc(50% + 0.5px), transparent calc(50% + 0.5px)),
    #ffffff;
  box-shadow: 2px 2px 0 rgba(29, 42, 68, 0.82);
  cursor: pointer;
  font: inherit;
  overflow: hidden;
  touch-action: pan-y;
}

.writing-saved-tile.is-editing {
  border-color: #f97316;
  box-shadow:
    0 0 0 4px rgba(251, 188, 4, 0.34),
    2px 2px 0 rgba(29, 42, 68, 0.82);
}

.writing-saved-tile:focus-visible {
  outline: 3px solid rgba(26, 115, 232, 0.32);
  outline-offset: 3px;
}

.writing-saved-tile.is-new {
  animation: writingSavedTilePop 520ms cubic-bezier(0.18, 0.82, 0.24, 1.18) both;
}

.writing-saved-svg {
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.writing-saved-svg path {
  fill: none;
  stroke: #172033;
  stroke-width: 5;
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

.writing-saved-svg circle {
  fill: #172033;
  stroke: none;
}

@keyframes writingStarPop {
  0% {
    opacity: 0;
    transform: translateY(12px) scale(0.18) rotate(-32deg);
  }

  45% {
    opacity: 1;
    transform: translateY(-8px) scale(1.35) rotate(16deg);
  }

  72% {
    transform: translateY(2px) scale(0.92) rotate(-6deg);
  }

  100% {
    opacity: 1;
    transform: translateY(0) scale(1) rotate(0);
  }
}

@keyframes writingStarRing {
  0% {
    opacity: 0.9;
    transform: scale(0.35);
  }

  100% {
    opacity: 0;
    transform: scale(1.9);
  }
}

@keyframes writingDoneButtonPop {
  0%,
  100% {
    transform: translateY(0) scale(1);
  }

  46% {
    transform: translateY(-2px) scale(1.08);
  }
}

@keyframes writingSavedTilePop {
  0% {
    opacity: 0;
    transform: translateY(8px) scale(0.82);
  }

  72% {
    opacity: 1;
    transform: translateY(-2px) scale(1.04);
  }

  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (max-width: 860px) {
  #writing-practice-screen {
    --writing-area-size: min(360px, calc((100vh - 330px) / 2), calc(100vw - 44px));
    --writing-area-size: min(360px, calc((100svh - 330px) / 2), calc(100vw - 44px));
  }

  .writing-practice-layout {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .writing-stroke-panel,
  .writing-practice-card,
  .writing-saved-panel {
    padding: 10px;
  }

  #writing-practice-screen .writing-practice-card {
    gap: 0;
  }

  #writing-practice-screen .stroke-panel-head,
  .writing-practice-head {
    gap: 8px;
    min-height: 34px;
    margin-bottom: 6px;
  }

  #writing-practice-screen .stroke-panel-head {
    align-items: center;
    flex-direction: row;
  }

  #writing-practice-screen .stroke-action-row {
    flex: 0 0 auto;
    justify-content: flex-end;
  }

  #writing-practice-screen .stroke-tool-button,
  .writing-practice-actions .compact {
    width: auto;
    min-height: 34px;
    padding: 5px 8px;
    font-size: 0.82rem;
    line-height: 1.1;
    white-space: nowrap;
  }

  .writing-practice-actions {
    gap: 6px;
  }

  #writing-practice-screen .writing-practice-area {
    margin-bottom: 6px;
  }

  #writing-practice-screen .writing-saved-panel {
    margin-top: 8px;
  }

  #writing-practice-screen .writing-practice-area .writing-done-button {
    right: 8px;
    bottom: 8px;
    min-width: 74px;
    min-height: 36px;
    padding: 6px 12px;
    font-size: 0.86rem;
  }

  .writing-stroke-view {
    min-height: 0;
  }

  .writing-practice-area {
    min-height: 0;
  }

  .writing-stroke-panel .stroke-note {
    margin-top: 8px;
    font-size: 0.9rem;
    line-height: 1.18;
  }
}

@media (max-height: 520px) {
  #writing-practice-screen {
    --writing-area-size: min(220px, calc(100vh - 252px), calc((100vw - 72px) / 2));
    --writing-area-size: min(220px, calc(100svh - 252px), calc((100vw - 72px) / 2));
    padding-bottom: 0;
  }

  .writing-practice-layout {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .writing-stroke-panel,
  .writing-practice-card,
  .writing-saved-panel {
    padding: 8px;
  }

  #writing-practice-screen .writing-practice-card {
    gap: 0;
  }

  #writing-practice-screen .badge-header {
    margin-bottom: 8px;
  }

  #writing-practice-screen .stroke-panel-head,
  .writing-practice-head {
    gap: 6px;
    min-height: 30px;
    margin-bottom: 5px;
  }

  .writing-stroke-panel .stroke-note {
    margin-top: 6px;
    font-size: 0.8rem;
    line-height: 1.12;
  }

  #writing-practice-screen .writing-star-tray {
    min-height: 26px;
    padding-top: 0;
  }

  #writing-practice-screen .writing-star {
    width: 22px;
    height: 22px;
    font-size: 1.16rem;
  }

  #writing-practice-screen .writing-star-summary {
    min-width: 56px;
    min-height: 28px;
    padding: 2px 10px;
    font-size: 1rem;
  }

  #writing-practice-screen .writing-practice-area .writing-done-button {
    right: 6px;
    bottom: 6px;
    min-width: 64px;
    min-height: 30px;
    padding: 4px 9px;
    border-radius: 7px;
    font-size: 0.74rem;
  }

  #writing-practice-screen .writing-practice-area {
    margin-bottom: 5px;
  }

  #writing-practice-screen .writing-saved-grid {
    --writing-saved-size: 96px;
    gap: 7px;
    grid-template-columns: repeat(auto-fill, minmax(var(--writing-saved-size), var(--writing-saved-size)));
    justify-content: start;
  }

  #writing-practice-screen .writing-practice-floating-nav {
    display: none;
  }
}

@media (orientation: landscape) and (min-width: 761px) and (max-height: 820px) {
  #writing-practice-screen {
    --writing-area-size: min(320px, calc(100vh - 460px), calc((100vw - 76px) / 2));
    --writing-area-size: min(320px, calc(100svh - 460px), calc((100vw - 76px) / 2));
    padding-bottom: 0;
  }

  #writing-practice-screen .badge-header {
    margin-bottom: 8px;
  }

  #writing-practice-screen .writing-practice-layout {
    gap: 10px;
  }

  #writing-practice-screen .writing-stroke-panel,
  #writing-practice-screen .writing-practice-card,
  #writing-practice-screen .writing-saved-panel {
    padding: 10px;
  }

  #writing-practice-screen .stroke-panel-head,
  #writing-practice-screen .writing-practice-head {
    min-height: 38px;
    margin-bottom: 8px;
  }

  #writing-practice-screen .stroke-tool-button,
  #writing-practice-screen .writing-practice-actions .compact {
    min-height: 38px;
    padding: 6px 10px;
    font-size: 0.86rem;
  }

  #writing-practice-screen .writing-practice-area {
    margin-bottom: 8px;
  }

  #writing-practice-screen .writing-star-tray {
    min-height: 26px;
    padding-top: 0;
  }

  #writing-practice-screen .writing-star {
    width: 22px;
    height: 22px;
    font-size: 1.16rem;
  }

  #writing-practice-screen .writing-star-summary {
    min-width: 56px;
    min-height: 28px;
    padding: 2px 10px;
    font-size: 1rem;
  }

  #writing-practice-screen .writing-saved-panel {
    margin-top: 8px;
  }

  #writing-practice-screen .writing-saved-panel-head {
    min-height: 28px;
    margin-bottom: 6px;
  }

  #writing-practice-screen .writing-saved-panel-head h3 {
    font-size: 1rem;
    line-height: 1.1;
  }

  #writing-practice-screen .writing-saved-grid {
    --writing-saved-size: 90px;
    gap: 7px;
    min-height: 94px;
  }

  #writing-practice-screen .writing-stroke-view,
  #writing-practice-screen .writing-practice-area {
    width: var(--writing-area-size);
  }

  #writing-practice-screen .writing-stroke-view svg {
    width: min(90%, calc(var(--writing-area-size) - 18px));
  }

  #writing-practice-screen .stroke-note {
    margin-top: 8px;
    font-size: 0.88rem;
    line-height: 1.14;
  }

  #writing-practice-screen .writing-practice-floating-nav {
    display: none;
  }
}

@media (max-width: 540px) and (min-height: 521px) {
  .app-shell:has(#writing-practice-screen.active) {
    padding: 8px;
  }

  #writing-practice-screen {
    --writing-area-size: min(220px, calc((100vh - 338px) / 2), calc(100vw - 48px));
    --writing-area-size: min(220px, calc((100svh - 338px) / 2), calc(100vw - 48px));
    padding-bottom: 0;
  }

  #writing-practice-screen .badge-header {
    grid-template-columns: 42px minmax(0, 1fr);
    gap: 6px 8px;
    margin-bottom: 6px;
  }

  #writing-practice-screen .icon-button {
    width: 42px;
    height: 42px;
    border-radius: 7px;
  }

  #writing-practice-screen h2 {
    font-size: clamp(1.14rem, 6vw, 1.32rem);
    line-height: 1.08;
  }

  #writing-practice-screen .eyebrow {
    margin-bottom: 1px;
    font-size: 0.72rem;
    line-height: 1.1;
  }

  #writing-practice-screen .kanji-detail-nav {
    grid-column: 1 / -1;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    gap: 5px;
    width: 100%;
    margin-left: 0;
  }

  #writing-practice-screen .kanji-detail-nav .secondary-button {
    min-height: 32px;
    padding: 4px 6px;
    border-radius: 7px;
    font-size: 0.76rem;
    line-height: 1.1;
  }

  #writing-practice-screen .kanji-detail-position {
    min-width: 42px;
    font-size: 0.78rem;
    line-height: 1.1;
  }

  #writing-practice-screen .writing-practice-layout {
    gap: 5px;
  }

  #writing-practice-screen .writing-stroke-panel,
  #writing-practice-screen .writing-practice-card,
  #writing-practice-screen .writing-saved-panel {
    padding: 7px;
    border-radius: 7px;
    box-shadow: none;
  }

  #writing-practice-screen .writing-practice-card {
    gap: 0;
  }

  #writing-practice-screen .stroke-panel-head,
  #writing-practice-screen .writing-practice-head {
    gap: 5px;
    min-height: 28px;
    margin-bottom: 4px;
  }

  #writing-practice-screen .stroke-panel-head h3,
  #writing-practice-screen .writing-practice-head h3 {
    font-size: 0.98rem;
    line-height: 1.1;
  }

  #writing-practice-screen .stroke-tool-button,
  #writing-practice-screen .writing-practice-actions .compact {
    min-height: 28px;
    padding: 3px 6px;
    border-radius: 7px;
    font-size: 0.72rem;
    line-height: 1.05;
  }

  #writing-practice-screen .writing-practice-actions {
    gap: 4px;
  }

  #writing-practice-screen .writing-star-tray {
    min-height: 24px;
    padding-top: 0;
  }

  #writing-practice-screen .writing-star {
    width: 21px;
    height: 21px;
    font-size: 1.08rem;
  }

  #writing-practice-screen .writing-star-summary {
    min-width: 54px;
    min-height: 27px;
    padding: 2px 9px;
    font-size: 0.96rem;
  }

  #writing-practice-screen .writing-practice-area .writing-done-button {
    right: 6px;
    bottom: 6px;
    min-width: 62px;
    min-height: 29px;
    padding: 4px 8px;
    border-radius: 7px;
    font-size: 0.72rem;
  }

  #writing-practice-screen .writing-practice-area {
    margin-bottom: 4px;
  }

  #writing-practice-screen .writing-saved-grid {
    --writing-saved-size: 96px;
    gap: 6px;
    grid-template-columns: repeat(auto-fill, minmax(var(--writing-saved-size), var(--writing-saved-size)));
    justify-content: start;
  }

  #writing-practice-screen .writing-stroke-view,
  #writing-practice-screen .writing-practice-area {
    width: var(--writing-area-size);
  }

  #writing-practice-screen .writing-practice-area {
    border-width: 2px;
    border-radius: 7px;
  }

  #writing-practice-screen .writing-stroke-view svg {
    width: min(92%, calc(var(--writing-area-size) - 18px));
  }

  #writing-practice-screen .stroke-note {
    margin-top: 6px;
    font-size: 0.78rem;
    line-height: 1.1;
  }

  #writing-practice-screen .writing-practice-floating-nav {
    display: none;
  }
}

.settings-panel {
  max-width: 900px;
  margin: 0 auto 14px;
  padding: 22px;
}

.settings-panel h3 {
  margin: 0 0 8px;
}

.settings-panel p {
  margin: 0;
  color: var(--muted);
  font-weight: 800;
  line-height: 1.55;
}

.settings-subsection {
  margin-top: 18px;
}

.settings-panel-head,
.settings-add-row,
.settings-user-row,
.settings-user-main,
.settings-row-actions {
  display: flex;
  align-items: center;
}

.settings-panel-head {
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.settings-user-count {
  min-width: 78px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(26, 115, 232, 0.12);
  color: var(--blue-dark);
  font-weight: 900;
  text-align: center;
}

.settings-user-list {
  display: grid;
  gap: 10px;
}

.settings-choice-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
}

.settings-choice-button {
  min-height: 46px;
  padding: 8px 12px;
  border: 1px solid rgba(26, 115, 232, 0.22);
  border-radius: 8px;
  background: #f8fbff;
  color: var(--blue);
  cursor: pointer;
  font: inherit;
  font-weight: 900;
  line-height: 1.2;
  text-align: center;
  transition: background 160ms ease, border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.settings-choice-button:hover {
  border-color: rgba(26, 115, 232, 0.44);
  background: #eef5ff;
}

.settings-choice-button.is-active {
  border-color: var(--blue);
  background: var(--blue);
  color: #ffffff;
  box-shadow: 0 8px 18px rgba(26, 115, 232, 0.22);
}

.settings-user-row {
  justify-content: space-between;
  gap: 12px;
  padding: 12px;
  border: 2px solid var(--line);
  border-radius: 8px;
  background: #fbfdff;
}

.settings-user-row.is-active {
  border-color: rgba(26, 115, 232, 0.42);
  background: rgba(26, 115, 232, 0.07);
}

.settings-user-main {
  min-width: 190px;
  gap: 10px;
}

.settings-user-main strong,
.settings-user-main span {
  display: block;
}

.settings-user-main strong {
  font-size: 1.08rem;
  line-height: 1.2;
}

.settings-user-main span {
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 800;
}

.settings-user-mark {
  display: grid;
  place-items: center;
  width: 34px;
  min-width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--blue);
  color: #ffffff;
  font-weight: 900;
}

.settings-user-row:not(.is-active) .settings-user-mark {
  background: #dbeafe;
  color: transparent;
}

.settings-rename {
  display: grid;
  grid-template-columns: auto minmax(150px, 1fr);
  gap: 8px;
  align-items: center;
  flex: 1;
  min-width: 220px;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 900;
}

.settings-name-input {
  width: 100%;
  min-height: 48px;
  padding: 8px 12px;
  border: 2px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  color: var(--ink);
  font: inherit;
  font-size: 1rem;
  font-weight: 900;
}

.settings-name-input:focus {
  border-color: rgba(26, 115, 232, 0.65);
  box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.14);
  outline: none;
}

.settings-row-actions {
  justify-content: flex-end;
  gap: 8px;
  flex: 0 0 auto;
}

.settings-row-actions .compact {
  white-space: nowrap;
}

.settings-rename-user {
  min-width: 142px;
}

.settings-add-row {
  gap: 10px;
}

.settings-add-field {
  display: grid;
  flex: 1;
  max-width: 340px;
}

.settings-add-row .settings-name-input {
  max-width: none;
}

.settings-status,
.settings-note,
.settings-add-status {
  min-height: 1.5em;
  margin-top: 12px;
  color: var(--blue-dark);
  font-weight: 900;
}

.settings-add-status {
  margin-bottom: 0;
}

.credits-panel {
  max-width: 860px;
  margin: 0 auto 14px;
  padding: 24px;
}

.credits-panel h3 {
  margin-top: 0;
}

.credits-panel p {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.7;
}

.credits-list {
  display: grid;
  gap: 12px;
  margin: 0;
}

.credits-list div {
  display: grid;
  grid-template-columns: 9rem 1fr;
  gap: 14px;
  align-items: center;
  padding: 14px 16px;
  border: 2px solid var(--line);
  border-radius: 8px;
  background: #fbfdff;
}

.credits-list dt {
  color: var(--muted);
  font-weight: 900;
}

.credits-list dd {
  margin: 0;
  font-weight: 900;
}

.credits-list a {
  color: var(--blue);
  font-weight: 900;
}

.data-delete-zone {
  max-width: 860px;
  margin: 8px auto 0;
  padding: 8px 2px 18px;
  text-align: right;
}

.data-delete-status {
  min-height: 1.4em;
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 800;
}

.data-delete-open {
  min-height: 36px;
  padding: 7px 12px;
  border: 1px solid rgba(212, 49, 79, 0.24);
  border-radius: 8px;
  background: rgba(212, 49, 79, 0.06);
  color: #9f243b;
  font-size: 0.86rem;
  font-weight: 900;
  cursor: pointer;
}

.data-delete-open:hover {
  background: rgba(212, 49, 79, 0.10);
}

.data-delete-panel {
  max-width: 720px;
  margin: 0 auto;
  padding: 28px;
}

.data-delete-panel h3 {
  margin-top: 0;
}

.data-delete-panel p {
  color: var(--muted);
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.7;
}

.data-delete-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 24px;
}

.data-delete-countdown {
  margin-top: 20px;
  padding: 18px;
  border: 2px solid rgba(212, 49, 79, 0.32);
  border-radius: 8px;
  background: rgba(212, 49, 79, 0.06);
}

.data-delete-countdown[hidden] {
  display: none;
}

.data-delete-countdown p {
  margin: 0 0 14px;
  color: #8b1e33;
  font-size: 1.12rem;
}

.data-delete-countdown strong {
  display: inline-block;
  min-width: 2ch;
  color: var(--red);
  font-size: 1.8rem;
  line-height: 1;
  text-align: center;
}

.danger-button {
  min-height: 68px;
  padding: 14px 24px;
  border: 1px solid rgba(212, 49, 79, 0.38);
  border-radius: 8px;
  background: var(--red);
  color: #ffffff;
  box-shadow: 0 3px 10px rgba(212, 49, 79, 0.24);
  font-size: 1.2rem;
  font-weight: 900;
  cursor: pointer;
}

@media (max-width: 760px) {
  .app-shell {
    padding: 16px;
  }

  .hero {
    display: block;
  }

  .home-hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .home-hero-actions .current-user-name {
    justify-content: center;
    width: 100%;
    min-height: 42px;
  }

  .hero-score {
    width: 150px;
    min-width: 150px;
    margin-top: 22px;
  }

  .grade-grid,
  .choice-grid,
  .result-grid,
  .badge-grade-grid,
  .kanji-detail-layout,
  .radical-detail-layout {
    grid-template-columns: 1fr;
  }

  .section-head,
  .quiz-topbar,
  .result-actions,
  .badge-header {
    align-items: stretch;
  }

  .badge-stats {
    grid-template-columns: auto 1fr;
  }

  .kanji-list-filter-summary,
  .radical-list-summary {
    align-items: stretch;
    flex-direction: column;
  }

  .kanji-reading-filter,
  .radical-name-filter {
    width: 100%;
    margin-left: 0;
    justify-content: space-between;
  }

  .kanji-reading-filter input,
  .radical-name-filter input {
    flex: 1 1 auto;
    width: auto;
    min-width: 0;
  }

  .quiz-meters {
    justify-content: flex-start;
  }

  #quiz-screen .pill-score {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: fit-content;
    min-width: 66px;
    min-height: 30px;
    padding: 2px 9px;
    border-width: 1px;
    border-radius: 7px;
    font-size: 1rem;
    line-height: 1;
  }

  .kanji-grid {
    grid-template-columns: repeat(auto-fill, minmax(72px, 1fr));
    gap: 10px;
  }

  .daily-kanji-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-areas:
      "date date"
      "prev next";
    gap: 8px;
  }

  .daily-kanji-nav .secondary-button {
    width: 100%;
    min-height: 44px;
    padding-right: 8px;
    padding-left: 8px;
    font-size: 0.9rem;
  }

  .daily-kanji-nav .secondary-button:first-child {
    grid-area: prev;
  }

  .daily-kanji-nav .secondary-button:last-child {
    grid-area: next;
    justify-self: stretch;
  }

  .daily-kanji-date {
    grid-area: date;
  }

  .daily-kanji-panel-head {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .daily-kanji-summary {
    width: 100%;
  }

  .daily-kanji-complete {
    top: 10px;
    left: 10px;
    width: 58px;
    height: 58px;
  }

  .daily-kanji-complete-mark {
    font-size: 3rem;
  }

  .daily-kanji-actions {
    position: static;
    transform: none;
    justify-content: stretch;
  }

  .daily-kanji-start-button,
  .daily-kanji-challenge-button,
  .daily-kanji-writing-button {
    flex: 1 1 150px;
    width: 100%;
  }

  .daily-kanji-grid {
    grid-template-columns: repeat(auto-fit, minmax(118px, 1fr));
    gap: 12px;
  }

  .daily-kanji-tile {
    max-width: 164px;
  }

  .radical-grid {
    grid-template-columns: repeat(auto-fill, minmax(132px, 1fr));
    gap: 10px;
  }

  .radical-tile {
    min-height: 162px;
    padding: 10px;
  }

  .radical-detail-svg {
    width: min(100%, 240px);
  }

  .radical-detail-facts {
    grid-template-columns: 1fr;
  }

  .radical-kanji-list {
    grid-template-columns: repeat(auto-fill, minmax(68px, 1fr));
  }

  .kanji-tile-number {
    min-width: 24px;
    height: 20px;
    padding: 0 4px;
    font-size: 0.66rem;
  }

  .kanji-tile-writing-stars {
    right: 0;
    bottom: 0;
    min-width: 25px;
    height: 21px;
    padding: 0 5px;
    font-size: 0.68rem;
  }

  .kanji-detail-char {
    min-height: 180px;
  }

  .kanji-detail-number {
    top: 9px;
    left: 9px;
    min-width: 34px;
    height: 26px;
    padding: 0 9px;
    font-size: 0.82rem;
  }

  .data-delete-zone {
    text-align: left;
  }

  .settings-panel {
    padding: 18px;
  }

  .settings-panel-head,
  .settings-user-row,
  .settings-add-row {
    align-items: stretch;
    flex-direction: column;
  }

  .settings-choice-grid {
    grid-template-columns: repeat(5, minmax(44px, 1fr));
    gap: 8px;
  }

  .settings-choice-button {
    min-height: 42px;
    padding: 7px 8px;
  }

  .settings-user-main,
  .settings-rename {
    min-width: 0;
  }

  .settings-row-actions {
    justify-content: stretch;
  }

  .settings-row-actions .compact,
  .settings-add-row .primary-button {
    flex: 1;
  }

  .settings-add-field,
  .settings-add-row .settings-name-input {
    max-width: none;
  }

  .history-panel {
    padding: 18px;
  }

  .history-panel-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .history-table-head {
    display: none;
  }

  .history-row {
    grid-template-columns: 1fr 1fr;
    min-width: 0;
    padding: 12px;
  }

  .history-row span {
    display: grid;
    gap: 2px;
    min-width: 0;
    overflow: visible;
    white-space: normal;
  }

  .history-row span::before {
    content: attr(data-label);
    color: var(--muted);
    font-size: 0.74rem;
    font-weight: 800;
    white-space: nowrap;
  }

  .history-pager {
    justify-content: stretch;
  }

  .history-pager .secondary-button {
    flex: 1;
  }

  .history-question-grid {
    grid-template-columns: 1fr;
  }

  .data-delete-panel {
    padding: 20px;
  }

  .data-delete-actions {
    flex-direction: column;
  }

  .data-delete-countdown .secondary-button {
    width: 100%;
  }

  .danger-button {
    width: 100%;
  }

  .stroke-order-view {
    min-height: 320px;
  }

  .stroke-panel-head {
    align-items: stretch;
    flex-direction: column;
  }

  .stroke-action-row {
    justify-content: stretch;
  }

  .stroke-tool-button {
    width: 100%;
  }

  #kanji-detail-screen .badge-header {
    display: grid;
    grid-template-columns: 54px minmax(0, 1fr);
    gap: 10px 12px;
    align-items: center;
    margin-bottom: 14px;
  }

  .kanji-detail-daily-writing {
    grid-column: 1 / -1;
    width: 100%;
    margin-left: 0;
  }

  #writing-practice-screen .badge-header {
    display: grid;
    grid-template-columns: 54px minmax(0, 1fr);
    gap: 10px 12px;
    align-items: center;
    margin-bottom: 14px;
  }

  #kanji-detail-screen .icon-button {
    width: 54px;
    height: 54px;
    font-size: 0;
  }

  #writing-practice-screen .icon-button {
    width: 54px;
    height: 54px;
    font-size: 0;
  }

  #kanji-detail-screen h2 {
    font-size: clamp(1.35rem, 6vw, 1.75rem);
    line-height: 1.15;
    overflow-wrap: anywhere;
  }

  #writing-practice-screen h2 {
    font-size: clamp(1.35rem, 6vw, 1.75rem);
    line-height: 1.15;
    overflow-wrap: anywhere;
  }

  #kanji-detail-screen .eyebrow {
    margin-bottom: 3px;
    font-size: 0.82rem;
  }

  #writing-practice-screen .eyebrow {
    margin-bottom: 3px;
    font-size: 0.82rem;
  }

  #radical-detail-screen .badge-header {
    display: grid;
    grid-template-columns: 54px minmax(0, 1fr);
    gap: 10px 12px;
    align-items: center;
    margin-bottom: 14px;
  }

  #radical-detail-screen .icon-button {
    width: 54px;
    height: 54px;
    font-size: 0;
  }

  #radical-detail-screen h2 {
    font-size: clamp(1.35rem, 6vw, 1.75rem);
    line-height: 1.15;
    overflow-wrap: anywhere;
  }

  #radical-detail-screen .eyebrow {
    margin-bottom: 3px;
    font-size: 0.82rem;
  }

  .kanji-detail-nav {
    grid-column: 1 / -1;
    grid-template-columns: 1fr auto 1fr;
    width: 100%;
    margin-left: 0;
  }

  .kanji-detail-nav .secondary-button {
    min-width: 0;
    min-height: 42px;
    padding: 7px 8px;
    font-size: 0.84rem;
    line-height: 1.15;
    white-space: normal;
  }

  .kanji-detail-floating-nav {
    right: 12px;
    bottom: 12px;
    left: 12px;
    gap: 8px;
    padding: 7px;
  }

  .kanji-detail-floating-nav .secondary-button {
    flex: 1 1 0;
    min-width: 0;
    min-height: 42px;
    padding: 7px 8px;
    font-size: 0.84rem;
    line-height: 1.15;
    white-space: normal;
  }

  .kanji-detail-floating-nav .kanji-detail-position {
    min-width: 54px;
    font-size: 0.84rem;
  }

  #kanji-detail-screen {
    padding-bottom: 72px;
  }

  .kanji-question-panel {
    margin-top: 12px;
  }

  .kanji-question-head {
    align-items: stretch;
    flex-direction: column;
    margin-bottom: 10px;
  }

  .kanji-challenge-button {
    width: 100%;
  }

  .kanji-question-list {
    gap: 8px;
  }

  .kanji-question-row {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "type type"
      "prompt answer";
    gap: 8px 10px;
    padding: 10px;
  }

  .kanji-question-type {
    grid-area: type;
    min-height: 32px;
    padding: 6px 9px;
    font-size: 0.82rem;
  }

  .kanji-question-body {
    grid-area: prompt;
    min-width: 0;
  }

  .kanji-question-prompt {
    font-size: clamp(1.4rem, 7vw, 1.9rem);
  }

  .kanji-question-meaning {
    margin-top: 6px;
    font-size: 0.86rem;
    line-height: 1.3;
  }

  .kanji-question-answer {
    grid-area: answer;
    align-self: start;
    margin-top: 6px;
    font-size: 0.78rem;
  }

  .kanji-question-answer strong {
    font-size: 1rem;
  }

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

  .kanji-detail-position {
    min-width: 54px;
    grid-column: auto;
    order: 0;
    font-size: 0.86rem;
  }

  #kanji-detail-screen .kanji-detail-layout {
    gap: 12px;
  }

  #kanji-detail-screen .panel {
    padding: 12px;
  }

  #kanji-detail-screen .kanji-detail-main {
    gap: 10px;
  }

  #kanji-detail-screen .kanji-detail-char {
    min-height: 136px;
    border-width: 2px;
    font-size: clamp(5rem, 31vw, 7rem);
  }

  #kanji-detail-screen .kanji-detail-number {
    top: 8px;
    left: 8px;
    min-width: 32px;
    height: 24px;
    padding: 0 8px;
    font-size: 0.78rem;
  }

  #kanji-detail-screen .kanji-detail-facts {
    gap: 8px;
  }

  #kanji-detail-screen .kanji-detail-facts div {
    grid-template-columns: 5.8rem minmax(0, 1fr);
    gap: 8px;
    padding: 8px 10px;
  }

  #kanji-detail-screen .kanji-detail-facts dt {
    font-size: 0.82rem;
  }

  #kanji-detail-screen .kanji-detail-facts dd {
    min-width: 0;
    font-size: 1rem;
    line-height: 1.24;
    overflow-wrap: anywhere;
  }

  #radical-detail-screen .radical-detail-facts div {
    grid-template-columns: 7rem minmax(0, 1fr);
    gap: 8px;
    padding: 8px 10px;
  }

  #radical-detail-screen .radical-detail-facts dt {
    font-size: 0.82rem;
    line-height: 1.24;
    padding-top: 0.16rem;
  }

  #radical-detail-screen .radical-detail-facts dd {
    min-width: 0;
    font-size: 1rem;
    line-height: 1.24;
    overflow-wrap: anywhere;
  }

  #kanji-detail-screen .stroke-panel-head {
    gap: 8px;
    margin-bottom: 8px;
  }

  #kanji-detail-screen .stroke-action-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  #kanji-detail-screen .stroke-tool-button {
    width: auto;
    min-width: 0;
    min-height: 40px;
    padding: 7px 8px;
    font-size: 0.82rem;
    line-height: 1.15;
    white-space: normal;
  }

  #kanji-detail-screen .stroke-order-view {
    height: min(72vw, 300px);
    min-height: 230px;
    border-width: 2px;
  }

  #kanji-detail-screen .stroke-order-view svg {
    width: min(86%, 260px);
  }

  #kanji-detail-screen .stroke-note {
    margin-top: 8px;
    font-size: 0.84rem;
  }

  .result-actions {
    flex-direction: column;
  }

  .question-card {
    min-height: 215px;
  }

  .choice-button {
    min-height: 84px;
  }
}

@media (orientation: portrait) and (min-width: 700px) and (max-width: 1100px) {
  .grade-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 761px) and (max-width: 900px) {
  #radical-detail-screen .radical-detail-layout {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  #radical-detail-screen .panel {
    padding: 16px;
  }

  #radical-detail-screen .radical-detail-svg {
    width: min(100%, 260px);
  }

  #radical-detail-screen .radical-detail-facts {
    height: auto;
  }
}

@media (max-height: 920px) and (min-width: 761px) {
  #kanji-detail-screen .badge-header {
    margin-bottom: 12px;
  }

  #kanji-detail-screen .icon-button {
    width: 56px;
    height: 56px;
    font-size: 0;
  }

  #kanji-detail-screen h2 {
    font-size: 1.55rem;
    line-height: 1.12;
  }

  #kanji-detail-screen .eyebrow {
    margin-bottom: 3px;
  }

  #kanji-detail-screen .panel {
    padding: 14px;
  }

  .kanji-detail-layout {
    grid-template-columns: minmax(230px, 0.72fr) minmax(360px, 1.28fr);
    gap: 12px;
  }

  .kanji-detail-main {
    gap: 10px;
  }

  .kanji-detail-char {
    min-height: 160px;
    font-size: clamp(5.2rem, 13vw, 8.8rem);
  }

  .kanji-detail-number {
    top: 9px;
    left: 9px;
    min-width: 36px;
    height: 26px;
    padding: 0 9px;
    font-size: 0.84rem;
  }

  .kanji-detail-facts {
    gap: 7px;
  }

  .kanji-detail-facts div {
    grid-template-columns: 5.4rem minmax(0, 1fr);
    gap: 8px;
    padding: 7px 10px;
  }

  .kanji-detail-facts dt {
    font-size: 0.84rem;
  }

  .kanji-detail-facts dd {
    font-size: 1rem;
    line-height: 1.26;
    overflow-wrap: anywhere;
  }

  .radical-detail-facts {
    grid-template: repeat(3, max-content) minmax(0, 1fr) / 1fr;
  }

  .radical-detail-facts div {
    grid-template-columns: 7rem minmax(0, 1fr);
    gap: 8px;
    align-content: start;
  }

  .radical-detail-facts dt {
    line-height: 1.26;
    padding-top: 0.28rem;
    white-space: nowrap;
  }

  .kanji-question-panel {
    margin-top: 12px;
  }

  .kanji-question-head {
    margin-bottom: 10px;
  }

  .kanji-question-row {
    grid-template-columns: 6.2rem minmax(0, 1fr) minmax(7rem, auto);
    gap: 9px;
    padding: 8px 10px;
  }

  .kanji-question-type {
    min-height: 32px;
    padding: 6px 9px;
    font-size: 0.82rem;
  }

  .kanji-question-prompt {
    font-size: clamp(1.25rem, 2.4vw, 1.75rem);
  }

  .kanji-question-meaning {
    margin-top: 5px;
    font-size: 0.84rem;
  }

  .kanji-question-answer strong {
    font-size: 1rem;
  }

  .stroke-panel-head {
    gap: 8px;
    margin-bottom: 8px;
  }

  .stroke-action-row {
    gap: 8px;
  }

  .stroke-tool-button {
    min-height: 38px;
    padding: 6px 10px;
    font-size: 0.86rem;
  }

  #writing-practice-screen .stroke-panel-head,
  #writing-practice-screen .writing-practice-head {
    min-height: 38px;
    margin-bottom: 8px;
  }

  #writing-practice-screen .stroke-tool-button,
  #writing-practice-screen .writing-practice-actions .compact {
    min-height: 38px;
    padding: 6px 10px;
    font-size: 0.86rem;
  }

  #writing-practice-screen .writing-practice-area {
    margin-bottom: 8px;
  }

  .stroke-order-view {
    min-height: 360px;
  }

  .stroke-order-view svg {
    width: min(88%, 360px);
  }

  .stroke-note {
    margin-top: 10px;
    font-size: 1rem;
    line-height: 1.22;
  }

  .kanji-detail-nav {
    gap: 7px;
  }

  .kanji-detail-nav .secondary-button {
    min-height: 40px;
    padding: 6px 10px;
    font-size: 0.88rem;
  }

  .kanji-detail-position {
    min-width: 62px;
    font-size: 0.88rem;
  }

  .kanji-detail-floating-nav {
    bottom: 10px;
    padding: 7px;
  }

  .kanji-detail-floating-nav .secondary-button {
    min-height: 40px;
    padding: 6px 10px;
    font-size: 0.86rem;
  }

  .kanji-detail-floating-nav .kanji-detail-position {
    min-width: 58px;
    font-size: 0.86rem;
  }
}

@media (max-height: 820px) and (min-width: 761px) {
  .app-shell {
    padding: 10px;
  }

  .hero {
    padding: 12px 16px;
  }

  .eyebrow {
    margin-bottom: 4px;
    font-size: 0.9rem;
  }

  h1 {
    font-size: 2.45rem;
  }

  h2 {
    font-size: 1.55rem;
  }

  .lead {
    font-size: 0.88rem;
    line-height: 1.35;
  }

  .hero-score {
    width: 104px;
    min-width: 104px;
    padding: 9px 8px;
  }

  .hero-score-label {
    font-size: 0.7rem;
    line-height: 1.08;
  }

  .hero-score strong {
    font-size: 2.25rem;
  }

  .section-head {
    margin: 10px 0 8px;
  }

  .home-footer-links {
    margin-top: 16px;
  }

  .credits-link {
    min-height: 24px;
    font-size: 0.72rem;
  }

  .grade-grid {
    gap: 9px;
  }

  .grade-card {
    min-height: 126px;
    padding: 10px;
  }

  .grade-card-head {
    gap: 8px;
  }

  .grade-number {
    font-size: 1.8rem;
  }

  .grade-title {
    font-size: 0.92rem;
  }

  .grade-meta {
    font-size: 0.76rem;
  }

  .grade-actions {
    gap: 8px;
    margin-top: 12px;
  }

  .grade-badge-button.compact {
    min-height: 44px;
    grid-template-columns: 34px auto;
    gap: 2px;
    padding: 7px 9px;
    font-size: 0.8rem;
  }

  .grade-badge-label {
    gap: 1px;
  }

  .grade-badge-count {
    font-size: 0.68rem;
  }

  .grade-badge-icon {
    width: 22px;
    min-width: 22px;
    height: 23px;
  }

  .badge-strip {
    max-height: 30px;
    overflow: hidden;
  }

  #quiz-screen .quiz-topbar {
    margin-bottom: 14px;
  }

  #quiz-screen .icon-button {
    width: 56px;
    height: 56px;
  }

  #quiz-screen .pill-score {
    min-width: 106px;
    padding: 8px 14px;
  }

  #quiz-screen .pill-score {
    font-size: 1.3rem;
  }

  #quiz-screen .progress-wrap {
    margin-bottom: 14px;
  }

  #quiz-screen .progress-info {
    margin-bottom: 6px;
  }

  #quiz-screen .progress-track {
    height: 20px;
  }

  #quiz-screen .question-card {
    min-height: 218px;
    padding: 22px;
  }

  #quiz-screen .type-chip {
    margin-bottom: 12px;
    padding: 7px 12px;
  }

  #quiz-screen .question-prompt {
    min-height: 1.34em;
    font-size: clamp(2.35rem, 7vw, 5.25rem);
  }

  #quiz-screen .question-note {
    margin-top: 10px;
  }

  #quiz-screen .feedback {
    min-height: 46px;
    margin: 10px 0;
    padding: 8px 14px;
    font-size: 1.2rem;
  }

  #quiz-screen .choice-grid {
    gap: 8px;
  }

  #quiz-screen .choice-button {
    min-height: 72px;
    padding: 9px 18px;
    font-size: clamp(1.35rem, 3.4vw, 2rem);
  }
}