@font-face {
  font-family: "Free HK Kai";
  src: url("assets/fonts/free-hk-kai-4700.woff2") format("woff2");
  font-display: swap;
}

:root,
[data-theme="light"] {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.9rem, 0.84rem + 0.3vw, 1.05rem);
  --text-base: clamp(1rem, 0.94rem + 0.3vw, 1.16rem);
  --text-lg: clamp(1.2rem, 1.05rem + 0.75vw, 1.62rem);
  --text-xl: clamp(1.72rem, 1.42rem + 1.35vw, 2.35rem);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  --color-bg: #f6f8fb;
  --color-surface: #ffffff;
  --color-surface-2: #f1f5f9;
  --color-border: #d9e2ec;
  --color-text: #17283a;
  --color-text-muted: #5d6975;
  --color-primary: #082f5f;
  --color-primary-hover: #06264e;
  --color-primary-active: #041b38;
  --color-primary-soft: #dcebf8;
  --color-accent: #ba2937;
  --color-accent-soft: #fff1f2;
  --color-gold: #b88810;
  --color-gold-soft: #fff8e7;
  --color-warning: #8a5b00;
  --color-success: #28724d;
  --color-success-soft: #e5f3eb;
  --color-error: #b52e35;
  --color-error-soft: #fdebed;
  --color-disabled: #a6aaa7;
  --color-inverse: #fffdf8;
  --shadow-sm: 0 4px 16px rgba(18, 59, 104, 0.08);
  --shadow-md: 0 18px 42px rgba(18, 59, 104, 0.11);
  --shadow-press: 0 3px 8px rgba(18, 59, 104, 0.12);

  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.4rem;
  --radius-xl: 1.8rem;
  --radius-full: 999px;
  --content: 1080px;
  --font-display: "Chiron GoRound TC", "Noto Sans TC", sans-serif;
  --font-body: "Chiron GoRound TC", "Noto Sans TC", sans-serif;
  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  --color-bg: #0d1c2d;
  --color-surface: #14283e;
  --color-surface-2: #1a324d;
  --color-border: #38516b;
  --color-text: #f7f2e8;
  --color-text-muted: #b9c5d0;
  --color-primary: #84b8e5;
  --color-primary-hover: #a8cff0;
  --color-primary-active: #cbe3f7;
  --color-primary-soft: #203c59;
  --color-accent: #ff7777;
  --color-accent-soft: #4d292d;
  --color-gold: #f0c957;
  --color-gold-soft: #473b1d;
  --color-warning: #f0c957;
  --color-success: #8ed0aa;
  --color-success-soft: #203e31;
  --color-error: #ff9a9f;
  --color-error-soft: #4b292d;
  --color-disabled: #78889a;
  --color-inverse: #0d1c2d;
  --shadow-sm: 0 2px 5px rgba(0, 0, 0, 0.24);
  --shadow-md: 0 10px 28px rgba(0, 0, 0, 0.32);
  --shadow-press: 0 3px 8px rgba(0, 0, 0, 0.28);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -moz-text-size-adjust: none;
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background:
    radial-gradient(circle at 8% 0%, rgba(186, 41, 55, 0.06), transparent 24rem),
    radial-gradient(circle at 92% 5%, rgba(184, 136, 16, 0.09), transparent 26rem),
    linear-gradient(180deg, color-mix(in srgb, var(--color-surface) 65%, var(--color-bg)) 0%, var(--color-bg) 38rem);
  display: flex;
  flex-direction: column;
}

button,
input,
textarea {
  font: inherit;
  color: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

svg {
  display: block;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  line-height: 1.25;
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 4px;
}

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

.skip-link {
  position: fixed;
  top: var(--space-3);
  left: var(--space-3);
  z-index: 99;
  transform: translateY(-150%);
  padding: var(--space-3) var(--space-4);
  color: var(--color-inverse);
  background: var(--color-primary);
  border-radius: var(--radius-sm);
}

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

.site-header {
  width: min(100% - var(--space-8), var(--content));
  margin: 0 auto;
  min-height: 86px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  border-bottom: 2px solid transparent;
  border-image: linear-gradient(90deg, var(--color-accent), var(--color-gold), #237fc4) 1;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-primary);
  text-align: left;
  background: transparent;
  padding: var(--space-2);
  border-radius: var(--radius-md);
}

.brand-mark {
  width: 58px;
  height: 52px;
  flex: none;
  object-fit: contain;
}

.brand span {
  display: grid;
}

.brand strong {
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
}

.brand small {
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}

.brand-short {
  display: none;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  line-height: 1.2;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.teacher-link {
  min-height: 44px;
  padding: var(--space-2) var(--space-4);
  color: var(--color-primary);
  background: var(--color-primary-soft);
  border-radius: var(--radius-full);
  font-weight: 700;
  white-space: nowrap;
}

.teacher-link:hover {
  color: var(--color-inverse);
  background: var(--color-primary);
}

.icon-button {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  color: var(--color-primary);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
  transition:
    transform var(--transition),
    background var(--transition),
    color var(--transition);
}

.icon-button:hover {
  color: var(--color-inverse);
  background: var(--color-primary);
  transform: translateY(-2px);
}

.icon-button:active {
  transform: translateY(1px);
}

.icon-button svg {
  width: 23px;
  height: 23px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

#app {
  width: min(100% - var(--space-8), var(--content));
  margin: 0 auto;
  flex: 1;
  padding-block: clamp(var(--space-8), 5vw, var(--space-12));
}

#app:focus {
  outline: none;
}

.home-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(240px, 0.75fr);
  gap: var(--space-10);
  align-items: end;
  margin-bottom: var(--space-6);
}

.eyebrow {
  color: var(--color-accent);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-2);
}

.home-intro h1 {
  max-width: 16ch;
  font-size: var(--text-xl);
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.home-intro p {
  max-width: 48ch;
  color: var(--color-text-muted);
}

.seven-steps {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: var(--space-2);
  padding: var(--space-3);
  background: transparent;
}

.seven-steps span {
  min-width: auto;
  height: 40px;
  display: grid;
  place-items: center;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  border-radius: var(--radius-full);
  padding-inline: var(--space-4);
  font-weight: 700;
}

.prompt-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.difficulty-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.coach-card {
  max-width: 920px;
}

.coach-lead {
  max-width: 62ch;
  color: var(--color-text-muted);
}

.speech-entry-card {
  width: 100%;
  min-height: 9rem;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-4);
  margin-top: var(--space-6);
  padding: var(--space-5);
  color: var(--color-text);
  text-align: left;
  background:
    linear-gradient(115deg, color-mix(in srgb, var(--color-primary) 15%, var(--color-surface)), var(--color-surface));
  border: 2px solid color-mix(in srgb, var(--color-primary) 60%, var(--color-border));
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.speech-entry-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.speech-entry-icon {
  width: 4.4rem;
  height: 4.4rem;
  display: grid;
  place-items: center;
  color: var(--color-inverse);
  background: var(--color-primary);
  border-radius: 1.3rem;
}

.speech-entry-icon svg {
  width: 2.7rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.speech-entry-card strong,
.speech-entry-card strong small,
.speech-entry-card b,
.speech-entry-card > span > small {
  display: block;
}

.speech-entry-card strong {
  color: var(--color-primary);
  font-size: var(--text-lg);
}

.speech-entry-card strong small,
.speech-entry-card > span > small {
  margin-top: var(--space-1);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}

.speech-entry-card b {
  margin-top: var(--space-2);
}

.coach-divider {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin: var(--space-8) 0 var(--space-5);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.coach-divider::before,
.coach-divider::after {
  height: 1px;
  flex: 1;
  content: "";
  background: var(--color-border);
}

.coach-section-title small {
  display: block;
  margin-top: var(--space-1);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}

.speaking-card {
  max-width: 58rem;
}

.speech-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  margin: var(--space-6) 0;
  padding: 0;
  list-style: none;
}

.speech-steps b {
  width: 2.25rem;
  height: 2.25rem;
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  color: var(--color-inverse);
  background: var(--color-primary);
  border-radius: 50%;
}

.speech-steps span,
.speech-steps strong,
.speech-steps small {
  display: block;
}

.speech-steps small {
  color: var(--color-text-muted);
}

.speech-steps li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  background: var(--color-primary-soft);
  border: 1px solid color-mix(in srgb, var(--color-primary) 30%, var(--color-border));
  border-radius: var(--radius-md);
}

.speech-mode-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
  margin: var(--space-6) 0;
}

.speech-mode-grid button {
  min-height: 7.5rem;
  display: grid;
  align-content: center;
  gap: var(--space-2);
  padding: var(--space-4);
  color: var(--color-text);
  text-align: left;
  background: var(--color-surface-2);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
}

.speech-mode-grid button.selected {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
  box-shadow: inset 0 0 0 1px var(--color-primary);
}

.speech-mode-grid strong,
.speech-mode-grid strong small {
  display: block;
}

.speech-mode-grid strong {
  color: var(--color-primary);
  font-size: var(--text-lg);
}

.speech-mode-grid strong small,
.speech-mode-grid span {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.speech-prompt {
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
  font-weight: 800;
}

.speech-prompt textarea {
  width: 100%;
  min-height: 6.5rem;
  resize: vertical;
  padding: var(--space-4);
  color: var(--color-text);
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-weight: 500;
}

.speech-prompt small {
  color: var(--color-text-muted);
  font-weight: 500;
}

.speech-target-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-3);
}

.speech-target-row .text-input {
  min-width: 0;
  font-size: clamp(1.5rem, 1.15rem + 1.4vw, 2.25rem);
}

.speech-demo-button {
  min-width: 9rem;
  justify-content: center;
}

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

.speech-local-note {
  display: grid;
  gap: var(--space-1);
  margin: var(--space-5) 0;
  padding: var(--space-4);
  background: var(--color-success-soft);
  border: 1px solid color-mix(in srgb, var(--color-success) 45%, var(--color-border));
  border-left: 5px solid var(--color-success);
  border-radius: var(--radius-md);
}

.speech-local-note span {
  color: var(--color-text-muted);
}

.speech-consent {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
  gap: var(--space-3);
  margin: var(--space-5) 0;
  padding: var(--space-4);
  background: var(--color-gold-soft);
  border: 1px solid color-mix(in srgb, var(--color-gold) 55%, var(--color-border));
  border-radius: var(--radius-md);
  cursor: pointer;
}

.speech-consent input {
  width: 1.35rem;
  height: 1.35rem;
  margin-top: 0.2rem;
  accent-color: var(--color-primary);
}

.speech-consent span,
.speech-consent strong {
  display: block;
}

.speech-consent strong {
  margin-bottom: var(--space-1);
  color: var(--color-primary);
}

.speech-service-status {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-1) var(--space-3);
  align-items: center;
  margin: var(--space-5) 0;
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-left: 5px solid var(--color-warning);
  border-radius: var(--radius-md);
}

.speech-service-status strong,
.speech-service-status span {
  grid-column: 1;
}

.speech-service-status span {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.speech-service-status.ready {
  background: var(--color-success-soft);
  border-left-color: var(--color-success);
}

.speech-service-status.not-ready {
  background: color-mix(in srgb, var(--color-warning) 8%, var(--color-surface));
}

.speech-service-status.checking {
  background: var(--color-primary-soft);
  border-left-color: var(--color-primary);
}

.service-retry {
  grid-column: 2;
  grid-row: 1 / span 2;
  min-height: 44px;
  padding: var(--space-2) var(--space-3);
  color: var(--color-primary);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-weight: 800;
}

.recorder-panel {
  display: grid;
  gap: var(--space-4);
  margin: var(--space-6) 0;
  padding: var(--space-6);
  text-align: center;
  background:
    linear-gradient(145deg, color-mix(in srgb, var(--color-primary) 7%, var(--color-surface)), var(--color-surface));
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.recorder-panel.is-recording {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--color-accent) 12%, transparent);
}

.recorder-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
}

.recorder-dot {
  width: 1rem;
  height: 1rem;
  background: var(--color-disabled);
  border-radius: 50%;
}

.is-recording .recorder-dot {
  background: var(--color-accent);
  animation: recorder-pulse 1s ease-in-out infinite;
}

.recorder-bars {
  height: 3.2rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.recorder-bars i {
  width: 0.3rem;
  height: 22%;
  background: var(--color-primary);
  border-radius: var(--radius-full);
}

.is-recording .recorder-bars i {
  animation: recorder-bar 850ms ease-in-out infinite alternate;
}

.is-recording .recorder-bars i:nth-child(3n + 1) { animation-delay: -200ms; }
.is-recording .recorder-bars i:nth-child(3n + 2) { animation-delay: -500ms; }

.recorder-visual > strong {
  min-width: 3.5rem;
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-lg);
}

.recorder-status {
  min-height: 1.7em;
  color: var(--color-text-muted);
}

.recorder-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.audio-upload-fallback {
  display: grid;
  justify-items: center;
  gap: var(--space-2);
  padding-top: var(--space-4);
  border-top: 1px dashed var(--color-border);
}

.audio-upload-fallback > span {
  color: var(--color-text);
  font-weight: 800;
}

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

.audio-upload-fallback small {
  color: var(--color-text-muted);
}

.danger-button {
  min-height: 50px;
  padding: var(--space-3) var(--space-5);
  color: var(--color-inverse);
  background: var(--color-accent);
  border: 2px solid transparent;
  border-radius: var(--radius-full);
  font-weight: 800;
}

.danger-button:disabled {
  color: var(--color-text-muted);
  cursor: not-allowed;
  background: var(--color-surface-2);
  border-color: var(--color-border);
}

.recording-preview {
  display: grid;
  gap: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.recording-preview[hidden] {
  display: none;
}

.recording-preview audio {
  width: 100%;
}

.speech-compare-question {
  margin: 0;
  color: var(--color-primary);
  font-size: var(--text-lg);
  font-weight: 800;
}

.speech-compare-question small {
  display: block;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.speech-self-check {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.speech-self-check button {
  min-height: 7rem;
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  align-items: center;
  gap: 0 var(--space-3);
  padding: var(--space-4);
  text-align: left;
  border: 3px solid;
  border-radius: var(--radius-lg);
}

.speech-self-check button > span {
  grid-row: 1 / span 2;
  font-size: 2.75rem;
  line-height: 1;
}

.speech-self-check strong,
.speech-self-check small {
  display: block;
}

.speech-self-check strong {
  font-size: var(--text-lg);
}

.speech-self-check small {
  color: inherit;
}

.self-check-good {
  color: var(--color-success);
  background: var(--color-success-soft);
  border-color: var(--color-success);
}

.self-check-retry {
  color: var(--color-warning);
  background: color-mix(in srgb, var(--color-warning) 9%, var(--color-surface));
  border-color: var(--color-warning);
}

.speech-self-result {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-top: var(--space-5);
  padding: var(--space-5);
  color: var(--color-success);
  background: var(--color-success-soft);
  border: 3px solid var(--color-success);
  border-radius: var(--radius-lg);
}

.speech-self-result > span {
  font-size: 3.5rem;
  line-height: 1;
}

.speech-self-result strong,
.speech-self-result small {
  display: block;
}

.speech-self-result strong {
  font-size: var(--text-xl);
}

.speech-analysis-loading,
.speech-analysis-error {
  display: grid;
  gap: var(--space-1);
  margin-top: var(--space-5);
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-left: 5px solid var(--color-primary);
  border-radius: var(--radius-md);
}

.speech-analysis-error {
  background: var(--color-error-soft);
  border-left-color: var(--color-error);
}

.speech-result {
  display: grid;
  gap: var(--space-5);
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 3px solid var(--color-primary);
}

.speech-result-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.audio-deleted-badge {
  padding: var(--space-2) var(--space-3);
  color: var(--color-success);
  background: var(--color-success-soft);
  border: 1px solid var(--color-success);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 800;
}

.speech-score-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3);
}

.speech-score-grid div {
  min-height: 7rem;
  display: grid;
  place-items: center;
  align-content: center;
  padding: var(--space-3);
  background: var(--color-primary-soft);
  border: 1px solid color-mix(in srgb, var(--color-primary) 30%, var(--color-border));
  border-radius: var(--radius-md);
}

.speech-score-grid strong {
  color: var(--color-primary);
  font-size: clamp(2rem, 1.6rem + 2vw, 3.25rem);
  line-height: 1;
}

.speech-score-grid span {
  margin-top: var(--space-2);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 700;
}

.speech-transcript,
.speech-review-block {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-5);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.speech-transcript > span {
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 800;
}

.speech-transcript p {
  font-size: var(--text-lg);
  font-weight: 700;
}

.speech-word-list,
.speech-correction-list {
  display: grid;
  gap: var(--space-2);
  list-style: none;
}

.speech-word-list li {
  display: grid;
  grid-template-columns: minmax(4rem, auto) auto minmax(8rem, 1fr);
  gap: var(--space-3);
  align-items: center;
  padding: var(--space-3);
  background: var(--color-surface);
  border-left: 4px solid var(--color-success);
  border-radius: var(--radius-sm);
}

.speech-word-list li.speech-word-review {
  border-left-color: var(--color-error);
}

.speech-word-list small {
  color: var(--color-text-muted);
}

.speech-correction-list li {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-3);
  background: var(--color-surface);
  border-radius: var(--radius-sm);
}

.speech-correction-list strong {
  color: var(--color-primary);
}

.speech-correction-list small,
.speech-caution {
  color: var(--color-text-muted);
}

.speech-caution {
  padding: var(--space-4);
  border-left: 4px solid var(--color-warning);
}

@keyframes recorder-pulse {
  50% { transform: scale(1.35); opacity: 0.55; }
}

@keyframes recorder-bar {
  to { height: 88%; }
}

.coach-privacy,
.coach-not-ready {
  display: grid;
  gap: var(--space-2);
  margin: var(--space-5) 0;
  padding: var(--space-4);
  color: var(--color-text);
  background: color-mix(in srgb, var(--color-warning) 9%, var(--color-surface));
  border: 1px solid color-mix(in srgb, var(--color-warning) 34%, var(--color-border));
  border-left: 5px solid var(--color-warning);
  border-radius: var(--radius-md);
}

.coach-privacy span,
.coach-not-ready p {
  margin: 0;
  color: var(--color-text-muted);
}

.photo-drop {
  min-height: 230px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: var(--space-2);
  margin: var(--space-5) 0 var(--space-2);
  padding: var(--space-5);
  color: var(--color-primary);
  text-align: center;
  cursor: pointer;
  background: var(--color-primary-soft);
  border: 2px dashed color-mix(in srgb, var(--color-primary) 55%, var(--color-border));
  border-radius: var(--radius-lg);
}

.photo-drop:hover {
  border-style: solid;
}

.photo-drop input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
}

.photo-drop:focus-within {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
}

.photo-drop img {
  width: min(100%, 520px);
  max-height: 310px;
  object-fit: contain;
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.photo-icon {
  width: 64px;
  height: 64px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  font-size: 2.5rem;
  line-height: 1;
}

.coach-mode-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
  margin: var(--space-5) 0;
}

.coach-mode {
  min-height: 132px;
  display: grid;
  align-content: center;
  gap: var(--space-2);
  padding: var(--space-5);
  color: var(--color-text);
  text-align: left;
  background: var(--color-surface-2);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.coach-mode:hover,
.coach-mode.selected {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
}

.coach-mode strong,
.coach-mode strong small {
  display: block;
}

.coach-mode strong {
  color: var(--color-primary);
  font-size: var(--text-lg);
}

.coach-mode strong small {
  margin-top: var(--space-1);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}

.coach-mode span {
  color: var(--color-text-muted);
}

.coach-review {
  display: grid;
  grid-template-columns: minmax(180px, 0.8fr) 1.2fr;
  gap: var(--space-5);
  align-items: center;
  margin: var(--space-5) 0;
  padding: var(--space-4);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.coach-review img {
  width: 100%;
  max-height: 250px;
  object-fit: contain;
  background: #fff;
  border-radius: var(--radius-md);
}

.coach-mode-label {
  color: var(--color-primary);
  font-weight: 800;
}

.coach-note {
  display: grid;
  gap: var(--space-2);
  color: var(--color-text);
  font-weight: 800;
}

.coach-note textarea {
  width: 100%;
  resize: vertical;
  padding: var(--space-4);
  color: var(--color-text);
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font: inherit;
  font-weight: 500;
}

.coach-note small {
  color: var(--color-text-muted);
  font-weight: 500;
}

.worksheet-font-status {
  margin-left: auto;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.path-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.path-card {
  min-height: 112px;
  display: grid;
  align-content: center;
  gap: var(--space-2);
  padding: var(--space-5);
  color: var(--color-text);
  text-align: left;
  background: var(--color-surface-2);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition:
    transform var(--transition),
    border-color var(--transition),
    background var(--transition);
}

.path-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
}

.path-card strong {
  color: var(--color-primary);
  font-size: var(--text-lg);
}

.path-card span {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.compact-paths {
  margin-top: var(--space-3);
}

.difficulty-card {
  min-height: 116px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  color: var(--color-text);
  text-align: left;
  background: color-mix(in srgb, var(--card-color, var(--color-primary)) 5%, var(--color-surface));
  border: 1px solid color-mix(in srgb, var(--card-color, var(--color-primary)) 22%, var(--color-border));
  border-radius: var(--radius-lg);
  box-shadow: none;
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    border-color var(--transition);
}

.difficulty-card:hover {
  transform: translateY(-3px);
  border-color: var(--card-color, var(--color-primary));
  box-shadow: var(--shadow-md);
}

.coach-feature-card {
  grid-column: 1 / -1;
  min-height: 136px;
  --card-color: var(--color-primary);
  background:
    linear-gradient(115deg, color-mix(in srgb, var(--color-primary) 13%, var(--color-surface)), var(--color-surface));
  border-width: 2px;
}

.paid-badge {
  color: #6f4d00;
  background: #fff1bd;
  border-color: #d3a62d;
}

.hk-stroke-glyph {
  display: grid;
  width: 5.5rem;
  height: 5.5rem;
  place-items: center;
  margin: 0 auto var(--space-3);
  color: var(--color-primary);
  font-family: "Free HK Kai", "Chiron GoRound TC", sans-serif;
  font-size: 4rem;
  line-height: 1;
  background:
    linear-gradient(transparent 49.5%, color-mix(in srgb, var(--color-border) 75%, transparent) 50%, transparent 50.5%),
    linear-gradient(90deg, transparent 49.5%, color-mix(in srgb, var(--color-border) 75%, transparent) 50%, transparent 50.5%);
  border: 2px solid var(--color-border);
}

[data-theme="dark"] .paid-badge {
  color: #ffe39a;
  background: #493915;
  border-color: #9a761e;
}

.difficulty-card:active {
  transform: translateY(1px);
  box-shadow: var(--shadow-press);
}

.difficulty-card .card-icon {
  width: 54px;
  height: 54px;
  color: var(--card-color, var(--color-primary));
}

.difficulty-card .card-icon svg {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.difficulty-card h2 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-1);
}

.en-title,
.en-card,
.en-inline {
  display: block;
  color: inherit;
  font-family: "Chiron GoRound TC", sans-serif;
}

.en-title {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.35;
  opacity: 0.82;
}

.en-card {
  margin-top: var(--space-1);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  font-weight: 600;
  line-height: 1.3;
}

.en-inline {
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  letter-spacing: 0;
  opacity: 0.78;
}

label small,
button small {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  line-height: 1.25;
}

.difficulty-card p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.difficulty-card .arrow {
  color: var(--card-color, var(--color-primary));
  font-size: var(--text-xl);
  line-height: 1;
  transition: transform var(--transition);
}

.difficulty-card:nth-child(1) { --card-color: #0f5f91; }
.difficulty-card:nth-child(2) { --card-color: #256d82; }
.difficulty-card:nth-child(3) { --card-color: #87690f; }
.difficulty-card:nth-child(4) { --card-color: #486c58; }
.difficulty-card:nth-child(5) { --card-color: #744f82; }
.difficulty-card:nth-child(6) { --card-color: #365e8c; }

.difficulty-card:hover .arrow {
  transform: translateX(4px);
}

.story-banner {
  width: 100%;
  min-height: 104px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-4);
  margin-top: var(--space-5);
  padding: var(--space-5) var(--space-6);
  color: var(--color-text);
  text-align: left;
  background: color-mix(in srgb, var(--color-gold) 6%, var(--color-surface));
  border: 1px solid color-mix(in srgb, var(--color-gold) 30%, var(--color-border));
  border-radius: var(--radius-lg);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.story-banner:hover {
  transform: translateY(-3px);
  border-color: var(--color-gold);
  box-shadow: var(--shadow-md);
}

.story-banner .story-icon {
  width: 54px;
  height: 54px;
  color: var(--color-accent);
}

.story-banner svg {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.story-banner > span:nth-child(2) {
  display: grid;
  gap: 2px;
}

.story-banner small,
.story-banner > span:nth-child(2) > span {
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}

.story-banner strong {
  font-size: var(--text-lg);
}

.story-banner .arrow {
  color: var(--color-accent);
  font-size: var(--text-xl);
}

.difficulty-card.upcoming {
  background: color-mix(in srgb, var(--color-surface) 76%, var(--color-surface-2));
}

.difficulty-card.upcoming .card-icon,
.difficulty-card.upcoming .arrow {
  color: var(--color-disabled);
}

.badge {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  margin-top: var(--space-2);
  padding: var(--space-1) var(--space-3);
  color: var(--color-text-muted);
  background: var(--color-surface-2);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
}

.flow-shell {
  max-width: 800px;
  margin: 0 auto;
}

.flow-topbar {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.back-button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  color: var(--color-primary);
  background: transparent;
  border-radius: var(--radius-md);
  font-weight: 600;
}

.progress-wrap {
  display: grid;
  gap: var(--space-2);
}

.progress-track {
  height: 9px;
  overflow: hidden;
  background: var(--color-surface-2);
  border-radius: var(--radius-full);
}

.progress-value {
  height: 100%;
  width: var(--progress);
  background: var(--color-primary);
  border-radius: inherit;
  transition: width 320ms ease;
}

.progress-text {
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}

.step-word {
  min-width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  color: var(--color-inverse);
  background: var(--color-accent);
  border-radius: var(--radius-full);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
}

.activity-card {
  padding: clamp(var(--space-6), 5vw, var(--space-10));
  background: var(--color-surface);
  border: 1px solid #eee9e1;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  animation: card-in 260ms ease both;
}

@keyframes card-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.activity-card h1 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
}

.activity-card > p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

.input-group {
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.input-group label,
.group-label {
  color: var(--color-text);
  font-weight: 700;
}

.text-input,
.text-area {
  width: 100%;
  min-height: 58px;
  padding: var(--space-3) var(--space-4);
  color: var(--color-text);
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-lg);
}

.text-area {
  min-height: 120px;
  resize: vertical;
  font-size: var(--text-base);
}

.text-input:focus,
.text-area:focus {
  border-color: var(--color-primary);
  outline: 0;
  box-shadow: 0 0 0 4px var(--color-primary-soft);
}

.input-error {
  min-height: 1.5em;
  margin-top: var(--space-2);
  color: var(--color-error);
  font-size: var(--text-sm);
  font-weight: 700;
}

.input-tip {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.5;
}

.context-strip {
  display: grid;
  gap: var(--space-1);
  margin-bottom: var(--space-5);
  padding: var(--space-3) var(--space-4);
  background: var(--color-accent-soft);
  border-left: 5px solid var(--color-accent);
  border-radius: var(--radius-sm);
}

.context-strip small {
  color: var(--color-text-muted);
}

.context-strip strong {
  font-weight: 600;
}

.result-location-note {
  margin-top: var(--space-4);
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 700;
}

.database-status {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: 0.75rem;
  padding: 0.55rem 0.8rem;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 700;
}

.database-status::before {
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  background: currentColor;
  content: "";
}

.database-status.connected {
  color: var(--color-success);
  background: color-mix(in srgb, var(--color-success) 12%, transparent);
}

.database-status.fallback {
  color: var(--color-warning);
  background: color-mix(in srgb, var(--color-warning) 12%, transparent);
}

.dictionary-notice {
  display: grid;
  gap: 0.3rem;
  margin: var(--space-5) 0;
  padding: var(--space-4);
  border: 1px solid color-mix(in srgb, var(--color-primary) 35%, transparent);
  border-radius: var(--radius-md);
  color: var(--color-text);
  background: var(--color-primary-soft);
}

.dictionary-notice strong {
  color: var(--color-primary);
  font-size: var(--text-lg);
}

.dictionary-source {
  display: inline-block;
  margin-top: var(--space-3);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

.quick-options {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.sample-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  margin-top: var(--space-5);
  margin-bottom: var(--space-2);
  color: var(--color-text);
}

.sample-heading span {
  font-weight: 700;
}

.sample-heading small {
  color: var(--color-text-muted);
}

.compact-button {
  padding-inline: var(--space-4);
}

.chip {
  min-height: 48px;
  padding: var(--space-2) var(--space-4);
  color: var(--color-primary);
  background: var(--color-primary-soft);
  border: 1px solid transparent;
  border-radius: var(--radius-full);
  font-weight: 700;
}

.chip:hover,
.chip.selected {
  color: var(--color-inverse);
  background: var(--color-primary);
}

.sample-button {
  min-height: 54px;
  padding: var(--space-3) var(--space-4);
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-align: left;
}

.sample-button:hover,
.sample-button.selected {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
}

.choice-list {
  display: grid;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.choice-button {
  min-height: 64px;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  color: var(--color-text);
  background: #faf9f6;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  text-align: left;
}

.choice-button::before {
  content: "";
  width: 22px;
  height: 22px;
  flex: none;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-full);
}

.choice-button:hover,
.choice-button.selected {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
}

.choice-button.selected::before {
  border: 6px solid var(--color-primary);
  background: var(--color-surface);
}

.action-row {
  display: flex;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.primary-button,
.secondary-button {
  min-height: 54px;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-weight: 700;
}

.primary-button {
  color: var(--color-inverse);
  background: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.primary-button:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
}

.primary-button:active {
  background: var(--color-primary-active);
  transform: translateY(0);
}

.primary-button:disabled {
  cursor: not-allowed;
  color: var(--color-surface);
  background: var(--color-disabled);
  box-shadow: none;
  transform: none;
}

.secondary-button {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

.secondary-button:hover {
  color: var(--color-inverse);
  background: var(--color-primary);
}

.hint-panel {
  margin-block: var(--space-5);
  padding: var(--space-5);
  background: var(--color-primary-soft);
  border-radius: var(--radius-lg);
}

.script-pair {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem 0.7rem;
  margin: 0 0 0.85rem;
}

.script-pair span {
  padding: 0.18rem 0.48rem;
  border-radius: 999px;
  background: var(--color-surface-2);
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.script-pair strong {
  font-size: 1.35rem;
}

.script-selector {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.script-selector button,
.script-selector.same-script {
  min-width: 0;
  min-height: 154px;
  display: grid;
  justify-items: center;
  align-content: center;
  gap: var(--space-2);
  padding: var(--space-3);
  color: var(--color-text);
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
}

.script-selector button.selected {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--color-primary) 13%, transparent);
}

.simplified-action {
  color: #a1261d !important;
  background: #fff3f1 !important;
  border: 2px solid #d94a3e !important;
  box-shadow: 0 0 0 3px color-mix(in srgb, #d94a3e 12%, transparent);
}

.simplified-action:hover,
.simplified-action.selected {
  color: #ffffff !important;
  background: #b83227 !important;
  border-color: #8e2019 !important;
}

.simplified-action .script-grid,
.simplified-action .script-grid i {
  color: #8e2019;
  border-color: #d94a3e;
  background-color: #ffffff;
}

.simplified-action.selected .script-grid,
.simplified-action.selected .script-grid i {
  color: #6f1712;
}

[data-theme="dark"] .simplified-action {
  color: #ffd8d3 !important;
  background: #4a211f !important;
  border-color: #f1786d !important;
}

[data-theme="dark"] .simplified-action:hover,
[data-theme="dark"] .simplified-action.selected {
  color: #ffffff !important;
  background: #922b24 !important;
  border-color: #ff9187 !important;
}

.script-selector span {
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 800;
}

.script-grid {
  display: grid;
  grid-template-columns: repeat(var(--character-count, 1), minmax(0, 92px));
  justify-content: center;
  gap: clamp(.25rem, 1vw, .6rem);
  max-width: 100%;
  color: var(--color-text);
  font-family: "Free HK Kai", var(--font-display);
}

.script-grid i {
  width: 100%;
  max-width: 92px;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  background:
    linear-gradient(to right, transparent calc(50% - .5px), var(--color-border) 50%, transparent calc(50% + .5px)),
    linear-gradient(to bottom, transparent calc(50% - .5px), var(--color-border) 50%, transparent calc(50% + .5px)),
    var(--color-bg);
  border: 2px solid var(--color-primary);
  font-size: clamp(1.8rem, 5vw, 3.4rem);
  font-style: normal;
  line-height: 1;
  overflow: hidden;
}

.script-grid.multi-character {
  width: 100%;
  overflow: hidden;
  padding: .15rem;
}

.hk-static-stroke-reference {
  display: grid;
  justify-items: center;
  gap: var(--space-3);
  width: min(100%, 32rem);
  margin-inline: auto;
  padding: var(--space-4);
  text-align: center;
  background: var(--color-surface);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-lg);
}

.hk-static-stroke-reference strong {
  display: grid;
  place-items: center;
  width: 180px;
  height: 180px;
  color: var(--color-primary);
  background:
    linear-gradient(to right, transparent calc(50% - .5px), var(--color-border) 50%, transparent calc(50% + .5px)),
    linear-gradient(to bottom, transparent calc(50% - .5px), var(--color-border) 50%, transparent calc(50% + .5px)),
    var(--color-bg);
  border: 2px solid var(--color-primary);
  font-family: "Free HK Kai", var(--font-display);
  font-size: 7.5rem;
  font-weight: 400;
  line-height: 1;
}

.hk-static-stroke-reference p {
  max-width: 38ch;
  margin: 0;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.primary-pronunciation {
  display: grid;
  gap: .2rem;
  margin: var(--space-4) 0;
  padding: var(--space-4);
  color: var(--color-inverse);
  background: var(--color-primary);
  border-radius: var(--radius-md);
}

.primary-pronunciation span {
  font-size: var(--text-sm);
  font-weight: 800;
}

.primary-pronunciation strong {
  font-size: clamp(1.75rem, 6vw, 2.7rem);
  letter-spacing: .04em;
}

.glyph-standard-note,
.stroke-standard-note {
  max-width: 62ch;
  margin: var(--space-2) auto;
  padding: .6rem .8rem;
  color: var(--color-text-muted);
  background: var(--color-gold-soft);
  border: 1px solid color-mix(in srgb, var(--color-gold) 45%, var(--color-border));
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  line-height: 1.45;
}

.glyph-standard-note p {
  display: inline;
  margin: 0 .35rem;
}

.glyph-standard-note a {
  color: var(--color-primary);
  font-weight: 800;
}

.hint-kicker {
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.hint-main {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
}

.hint-example {
  margin-top: var(--space-3);
  color: var(--color-text-muted);
}

.word-relations {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.relation-section {
  margin-block: var(--space-6);
  padding: var(--space-5);
  background: var(--color-bg);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-lg);
}

.relation-intro {
  margin-bottom: var(--space-4);
}

.relation-intro h2 {
  margin-top: var(--space-1);
  font-size: var(--text-lg);
}

.relation-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  min-height: 154px;
  padding: var(--space-5);
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
}

.synonym-card {
  border-color: var(--color-primary);
}

.antonym-card {
  border-color: var(--color-error);
}

.word-relations span,
.relation-card small {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 700;
}

.word-relations strong {
  color: var(--color-primary);
  font-size: var(--text-lg);
  line-height: 1.45;
}

.antonym-card strong {
  color: var(--color-error);
}

.related-words {
  margin-block: var(--space-5);
  padding: var(--space-5);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.related-words h2 {
  margin-block: var(--space-1) var(--space-4);
  font-size: var(--text-lg);
}

.related-word-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

.related-word-list > span {
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(4rem, auto) 1fr;
  align-items: baseline;
  gap: var(--space-1) var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid color-mix(in srgb, var(--color-primary) 18%, var(--color-border));
  border-radius: var(--radius-md);
}

.related-word-list strong {
  color: var(--color-primary);
  font-size: var(--text-lg);
}

.related-word-list small {
  color: var(--color-text-muted);
}

.related-word-list small:last-child {
  grid-column: 1 / -1;
  padding-top: var(--space-2);
  border-top: 1px solid var(--color-border);
  line-height: 1.6;
}

.path-switch {
  width: 100%;
  min-height: 52px;
  margin-top: var(--space-3);
  padding: var(--space-3) var(--space-4);
  color: var(--color-primary);
  background: color-mix(in srgb, var(--color-primary) 8%, var(--color-surface));
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-md);
  font: inherit;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
}

.pinyin-composer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-block: var(--space-4);
  padding: var(--space-4) var(--space-5);
  background: color-mix(in srgb, var(--color-primary) 9%, var(--color-surface));
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-lg);
}

.pinyin-composer span {
  color: var(--color-text-muted);
  font-weight: 700;
}

.pinyin-composer strong {
  color: var(--color-primary);
  font-size: clamp(1.75rem, 7vw, 2.6rem);
  letter-spacing: 0.12em;
}

.pinyin-word-results {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
  margin-block: var(--space-3) var(--space-5);
}

.pinyin-word-card {
  min-height: 116px;
  display: grid;
  gap: var(--space-2);
  padding: var(--space-4);
  color: var(--color-text);
  text-align: left;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
}

.pinyin-word-card:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
}

.pinyin-word-card > span:first-child {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
}

.pinyin-word-card strong {
  color: var(--color-primary);
  font-size: var(--text-lg);
}

.pinyin-word-card strong i {
  display: inline-grid;
  place-items: center;
  width: 1.7rem;
  height: 1.7rem;
  margin-right: var(--space-2);
  color: var(--color-surface);
  font-size: 0.85rem;
  font-style: normal;
  background: var(--color-primary);
  border-radius: 999px;
}

.result-order-note {
  margin: var(--space-4) 0 0;
  color: var(--color-text-muted);
  font-weight: 600;
}

.reward-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2) var(--space-4);
  margin: var(--space-4) 0 var(--space-6);
  padding: var(--space-3) var(--space-4);
  color: var(--color-text);
  background: var(--color-accent-soft);
  border: 1px solid color-mix(in srgb, var(--color-accent) 35%, transparent);
  border-radius: var(--radius-md);
}

.reward-strip b {
  color: var(--color-primary);
  font-size: 1.2rem;
}

.reward-strip small {
  color: var(--color-text-muted);
}

.example-practice,
.method-panel,
.finish-check {
  display: grid;
  gap: var(--space-3);
  margin-block: var(--space-5);
  padding: var(--space-5);
  background: var(--color-surface-alt);
  border: 2px solid color-mix(in srgb, var(--color-primary) 22%, var(--color-border));
  border-radius: var(--radius-lg);
}

.example-practice h2,
.method-panel h2,
.finish-check h2 {
  margin: 0;
}

.model-examples {
  display: grid;
  gap: var(--space-2);
}

.model-examples p {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-3);
  margin: 0;
  padding: var(--space-3);
  background: var(--color-surface);
  border-radius: var(--radius-sm);
}

.sentence-line {
  display: grid;
  gap: var(--space-2);
  font-weight: 700;
}

.sentence-line textarea,
.outline-list textarea {
  width: 100%;
  min-height: 72px;
  padding: var(--space-3);
  color: var(--color-text);
  font: inherit;
  resize: vertical;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.guide-choice-grid,
.method-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

.guide-intro {
  padding: var(--space-4);
  background: var(--color-primary-soft);
  border-left: 5px solid var(--color-primary);
  border-radius: var(--radius-sm);
}

.paragraph-toggle {
  display: inline-flex;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  padding: var(--space-1);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: 999px;
}

.paragraph-toggle button {
  min-height: 44px;
  padding: 0 var(--space-4);
  color: var(--color-text);
  font-weight: 700;
  background: transparent;
  border: 0;
  border-radius: 999px;
}

.paragraph-toggle button[aria-pressed="true"] {
  color: var(--color-surface);
  background: var(--color-primary);
}

.outline-list,
.reading-checklist {
  display: grid;
  gap: var(--space-4);
  padding: 0;
  list-style: none;
  counter-reset: outline;
}

.outline-list li {
  display: grid;
  grid-template-columns: minmax(180px, 0.8fr) 1.4fr;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.outline-list p,
.method-grid p {
  margin: var(--space-2) 0 0;
  color: var(--color-text-muted);
}

.method-grid article {
  display: grid;
  align-content: start;
  gap: var(--space-2);
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.method-grid .method-example {
  display: grid;
  gap: var(--space-1);
  margin-top: var(--space-2);
  padding: var(--space-3);
  color: var(--color-primary);
  background: var(--color-primary-soft);
  border-radius: var(--radius-sm);
}

.method-example b {
  color: var(--color-accent);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
}

.finish-check label {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: 44px;
}

.finish-check input {
  width: 24px;
  height: 24px;
}

.reading-checklist button {
  width: 100%;
  min-height: 72px;
  display: grid;
  grid-template-columns: 48px 1fr;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  color: var(--color-text);
  text-align: left;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
}

.reading-checklist button.done {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
}

.reading-checklist button small {
  display: block;
  margin-top: var(--space-1);
  color: var(--color-text-muted);
}

.reading-number {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  color: var(--color-surface);
  font-weight: 800;
  background: var(--color-primary);
  border-radius: 50%;
}

.reading-progress {
  padding: var(--space-3);
  font-weight: 700;
  text-align: center;
  background: var(--color-accent-soft);
  border-radius: var(--radius-sm);
}

.pinyin-word-card small {
  color: var(--color-text-muted);
}

.safety-note,
.meaning-clue {
  display: grid;
  gap: var(--space-2);
  margin-block: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--radius-md);
}

.safety-note {
  color: var(--color-text);
  background: var(--color-accent-soft);
  border-left: 5px solid var(--color-accent);
}

.safety-note span {
  color: var(--color-text-muted);
}

.meaning-clue {
  background: var(--color-primary-soft);
  border: 2px solid color-mix(in srgb, var(--color-primary) 35%, transparent);
}

.meaning-clue span,
.meaning-clue small {
  color: var(--color-text-muted);
}

.meaning-clue strong {
  color: var(--color-primary);
  font-size: var(--text-lg);
}

.pinyin-groups {
  display: grid;
  gap: var(--space-5);
  margin-top: var(--space-5);
}

.pinyin-group {
  min-width: 0;
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.pinyin-group legend {
  padding-inline: var(--space-2);
  color: var(--color-primary);
  font-size: var(--text-base);
  font-weight: 800;
}

.pinyin-character-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(52px, 1fr));
  gap: var(--space-2);
}

.pinyin-character {
  min-width: 52px;
  min-height: 52px;
  padding: var(--space-2);
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font: inherit;
  font-size: var(--text-lg);
  font-weight: 700;
  cursor: pointer;
}

.pinyin-character:hover,
.pinyin-character.selected {
  color: var(--color-surface);
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.pinyin-more {
  width: 100%;
  min-height: 48px;
  margin-top: var(--space-3);
  padding: var(--space-2) var(--space-4);
  color: var(--color-primary);
  background: transparent;
  border: 1px dashed var(--color-primary);
  border-radius: var(--radius-sm);
  font: inherit;
  font-weight: 750;
  cursor: pointer;
}

.pinyin-more:hover,
.pinyin-more:focus-visible {
  background: color-mix(in srgb, var(--color-primary) 8%, var(--color-surface));
}

.lookup-confirmation {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: var(--space-1) var(--space-4);
  align-items: center;
  margin-block: var(--space-5);
  padding: var(--space-5);
  color: var(--color-success);
  background: color-mix(in srgb, var(--color-success) 10%, var(--color-surface));
  border: 3px solid var(--color-success);
  border-radius: var(--radius-lg);
}

.lookup-confirmation > span {
  grid-row: 1 / 3;
  display: grid;
  width: 58px;
  height: 58px;
  place-items: center;
  color: white;
  background: var(--color-success);
  border-radius: 50%;
  font-size: 2rem;
  font-weight: 900;
}

.lookup-confirmation strong {
  font-size: var(--text-lg);
}

.lookup-confirmation small {
  color: var(--color-text-muted);
  line-height: 1.5;
}

.relation-heading {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.relation-badge {
  display: inline-grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  color: var(--color-surface);
  background: var(--color-primary);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
}

.relation-badge.opposite {
  background: var(--color-error);
}

.category-pill {
  display: inline-flex;
  margin-bottom: var(--space-3);
  padding: var(--space-1) var(--space-3);
  color: var(--color-primary);
  background: color-mix(in srgb, var(--color-primary) 8%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-primary) 24%, transparent);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
}

.stroke-section {
  display: grid;
  justify-items: center;
  gap: var(--space-3);
  margin: var(--space-2) 0 var(--space-6);
  padding: var(--space-5);
  text-align: center;
  background: color-mix(in srgb, #bd7043 8%, var(--color-bg));
  border: 1px solid color-mix(in srgb, #bd7043 28%, transparent);
  border-radius: var(--radius-lg);
}

.stroke-section h2 {
  font-size: var(--text-lg);
}

.stroke-target {
  width: 180px;
  height: 180px;
  display: grid;
  place-items: center;
  overflow: hidden;
  background-color: var(--color-surface);
  background-image:
    linear-gradient(color-mix(in srgb, #bd7043 15%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, #bd7043 15%, transparent) 1px, transparent 1px);
  background-size: 50% 50%;
  border: 1px solid color-mix(in srgb, #bd7043 32%, transparent);
  border-radius: var(--radius-md);
}

.stroke-fallback {
  max-width: 13ch;
  padding: var(--space-3);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.hk-stroke-hold {
  max-width: 27ch;
  display: grid;
  gap: var(--space-2);
  color: var(--color-text);
}

.hk-stroke-hold strong { color: var(--color-primary); font-size: var(--text-base); }
.hk-stroke-hold a { color: var(--color-primary); font-weight: 800; text-decoration: underline; }
.hk-stroke-glyph {
  font-family: "Free HK Kai", serif;
  font-size: 4.5rem;
  line-height: 1;
}

.stroke-play {
  min-height: 48px;
}

body.worksheet-preview-open {
  overflow: hidden;
}

.worksheet-preview {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
  padding: max(16px, env(safe-area-inset-top))
    max(16px, env(safe-area-inset-right))
    max(16px, env(safe-area-inset-bottom))
    max(16px, env(safe-area-inset-left));
  background: rgba(7, 24, 45, 0.76);
  backdrop-filter: blur(6px);
}

.worksheet-preview-shell {
  width: min(100%, 980px);
  height: min(94vh, 920px);
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  overflow: hidden;
  color: var(--color-text);
  background: var(--color-surface);
  border: 2px solid var(--color-gold);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 70px rgba(7, 24, 45, 0.36);
}

.worksheet-preview-header,
.worksheet-preview-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
}

.worksheet-preview-header {
  border-bottom: 1px solid var(--color-border);
}

.worksheet-preview-header h2,
.worksheet-preview-header p {
  margin: 0;
}

.worksheet-preview-frame {
  width: 100%;
  height: 100%;
  background: #fff;
  border: 0;
}

.worksheet-preview-actions {
  justify-content: flex-end;
  flex-wrap: wrap;
  border-top: 1px solid var(--color-border);
}

.worksheet-font-status {
  margin-right: auto;
}

.worksheet-preview-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.worksheet-preview-download[aria-disabled="true"] {
  cursor: wait;
  opacity: 0.58;
  pointer-events: none;
}

@media (max-width: 620px) {
  .worksheet-preview {
    padding: 0;
  }

  .worksheet-preview-shell {
    width: 100%;
    height: 100dvh;
    border: 0;
    border-radius: 0;
  }

  .worksheet-preview-header {
    align-items: flex-start;
    padding: var(--space-3) var(--space-4);
  }

  .worksheet-preview-header p:not(.eyebrow) {
    font-size: var(--text-xs);
  }

  .worksheet-preview-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding: var(--space-3) var(--space-4)
      max(var(--space-3), env(safe-area-inset-bottom));
  }

  .worksheet-font-status,
  .worksheet-preview-download {
    grid-column: 1 / -1;
  }

  .worksheet-font-status {
    grid-row: 1;
    margin-right: 0;
    text-align: center;
  }

  .worksheet-preview-back {
    grid-column: 1;
    grid-row: 2;
  }

  .worksheet-preview-print {
    grid-column: 2;
    grid-row: 2;
  }

  .worksheet-preview-download {
    grid-row: 3;
  }

  .worksheet-preview-actions button,
  .worksheet-preview-actions .worksheet-preview-download {
    width: 100%;
  }
}

.stroke-actions {
  width: min(100%, 520px);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

.stroke-script-switch {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
  width: min(100%, 520px);
}

.stroke-script-switch .secondary-button {
  min-height: 3.25rem;
}

.stroke-script-switch .selected {
  color: var(--color-inverse);
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.stroke-script-switch .simplified-action.selected {
  color: #ffffff !important;
  background: #b83227 !important;
  border-color: #8e2019 !important;
}

.writing-practice {
  display: grid;
  justify-items: center;
  gap: var(--space-4);
  margin: var(--space-6) 0;
  padding: var(--space-5);
  text-align: center;
  background: color-mix(in srgb, var(--color-primary) 7%, var(--color-surface));
  border: 1px solid color-mix(in srgb, var(--color-primary) 25%, transparent);
  border-radius: var(--radius-lg);
}

.writing-practice.is-expanded {
  position: fixed;
  z-index: 1200;
  inset: 0;
  overflow: auto;
  align-content: start;
  margin: 0;
  padding: clamp(1rem, 3vw, 2rem);
  background: var(--color-background);
  border: 0;
  border-radius: 0;
}

body.writing-pad-open {
  overflow: hidden;
}

.writing-practice h2 {
  font-size: var(--text-lg);
}

.writing-toolbar,
.writing-edit-actions {
  width: min(100%, 620px);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
}

.writing-toolbar button,
.writing-widths button {
  min-height: 46px;
  padding: 0.65rem 0.9rem;
  color: var(--color-text);
  background: var(--color-surface);
  border: 2px solid color-mix(in srgb, var(--color-primary) 30%, var(--color-border));
  border-radius: var(--radius-md);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.writing-toolbar button small,
.writing-edit-actions button small,
.writing-widths span small {
  display: block;
  font-size: 0.72rem;
  font-weight: 650;
}

.writing-toolbar button:hover,
.writing-toolbar button:focus-visible,
.writing-widths button:hover,
.writing-widths button:focus-visible,
.writing-widths button.selected {
  color: #fff;
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.writing-widths {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem;
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.writing-widths span {
  padding: 0 0.4rem;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 800;
}

.writing-widths button {
  min-width: 46px;
  padding-inline: 0.65rem;
}

.writing-pad-wrap {
  position: relative;
  width: min(100%, 440px);
  aspect-ratio: 1;
  overflow: hidden;
  background:
    linear-gradient(45deg, transparent calc(50% - 0.5px), color-mix(in srgb, var(--color-primary) 13%, transparent) 50%, transparent calc(50% + 0.5px)),
    linear-gradient(-45deg, transparent calc(50% - 0.5px), color-mix(in srgb, var(--color-primary) 13%, transparent) 50%, transparent calc(50% + 0.5px)),
    linear-gradient(to right, transparent calc(50% - 0.5px), color-mix(in srgb, var(--color-primary) 28%, transparent) 50%, transparent calc(50% + 0.5px)),
    linear-gradient(to bottom, transparent calc(50% - 0.5px), color-mix(in srgb, var(--color-primary) 28%, transparent) 50%, transparent calc(50% + 0.5px)),
    var(--color-surface);
  border: 3px solid color-mix(in srgb, var(--color-primary) 55%, transparent);
  border-radius: var(--radius-md);
  box-shadow: 0 14px 35px color-mix(in srgb, var(--color-primary) 13%, transparent);
}

.writing-practice.is-expanded .writing-pad-wrap {
  width: min(78vh, 680px, calc(100vw - 2rem));
}

.writing-guide {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: color-mix(in srgb, var(--color-text) 12%, transparent);
  font-family: "Free HK Kai", serif;
  font-size: clamp(10rem, 45vw, 16rem);
  line-height: 1;
  pointer-events: none;
  user-select: none;
}

.writing-guide-svg {
  width: 88%;
  height: 88%;
  fill: currentColor;
}

.writing-guide.unavailable {
  display: none;
}

.writing-guide.is-hidden {
  opacity: 0;
}

.writing-pad {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  touch-action: none;
  cursor: crosshair;
}

.writing-edit-actions .secondary-button {
  flex: 1 1 170px;
}

@media (max-width: 520px) {
  .writing-toolbar,
  .writing-edit-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .writing-widths {
    justify-content: center;
  }
}

.definition-label {
  margin: var(--space-4) 0 var(--space-1);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 700;
}

.practice-launcher {
  margin-top: var(--space-7);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
}

.pinyin-fallback {
  display: grid;
  justify-items: start;
  gap: var(--space-3);
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.pinyin-word-card em {
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  font-style: normal;
  font-weight: 700;
}

.practice-launcher h2 {
  margin-bottom: var(--space-2);
  font-size: var(--text-lg);
}

.practice-launcher .chip {
  min-height: 56px;
  display: inline-grid;
  gap: 0.1rem;
}

.practice-launcher .chip small {
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  font-weight: 600;
}

.character-worksheet {
  display: none;
}

.idiom-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

.daily-idiom {
  width: 100%;
  display: grid;
  justify-items: start;
  gap: var(--space-2);
  margin-block: var(--space-5) var(--space-4);
  padding: clamp(1.4rem, 4vw, 2.4rem);
  color: var(--color-text);
  text-align: left;
  background:
    radial-gradient(circle at 88% 22%, color-mix(in srgb, var(--color-accent) 20%, transparent) 0 13%, transparent 14%),
    var(--color-accent-soft);
  border: 2px solid color-mix(in srgb, var(--color-accent) 55%, transparent);
  border-radius: var(--radius-xl);
}

.daily-idiom:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.daily-idiom .today-label {
  padding: var(--space-1) var(--space-3);
  color: var(--color-inverse);
  background: var(--color-accent);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
}

.daily-idiom strong {
  color: var(--color-text);
  font-size: clamp(2rem, 7vw, 3.6rem);
  line-height: 1.1;
}

.daily-idiom > span:not(.today-label),
.daily-idiom small {
  color: var(--color-text-muted);
}

.daily-idiom b {
  margin-top: var(--space-2);
  color: var(--color-primary);
}

.library-toggle {
  min-height: 48px;
  padding: var(--space-2) var(--space-4);
  color: var(--color-primary);
  background: var(--color-primary-soft);
  border-radius: var(--radius-full);
  font-weight: 700;
}

.library-note {
  margin-top: var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.idiom-card.learned {
  border-color: var(--color-success);
}

.idiom-card {
  min-height: 126px;
  display: grid;
  align-content: center;
  gap: var(--space-2);
  padding: var(--space-5);
  color: var(--color-text);
  text-align: left;
  background: color-mix(in srgb, var(--idiom-color, #bd7043) 9%, var(--color-surface));
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
}

.idiom-card:hover {
  border-color: var(--idiom-color, #bd7043);
  transform: translateY(-2px);
}

.idiom-card strong {
  color: var(--idiom-color, #a95f36);
  font-family: var(--font-display);
  font-size: var(--text-lg);
}

.idiom-card span {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.idiom-illustration {
  width: 66px;
  height: 72px;
  display: block;
  overflow: hidden;
  background: #f7ead1;
  border: 2px solid #b84d3e;
  border-radius: 0.75rem;
  box-shadow: 0 5px 12px rgba(112, 42, 28, 0.12);
}

.idiom-illustration > img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.daily-idiom .idiom-illustration {
  position: absolute;
  top: clamp(1.2rem, 4vw, 2rem);
  right: clamp(1.2rem, 4vw, 2rem);
  width: 82px;
  height: 88px;
}

[data-theme="dark"] .idiom-illustration {
  background: #472821;
  border-color: #ef8b74;
}

.idiom-reference-detail {
  max-width: 54rem;
}

.reference-definition,
.reference-example,
.reference-story {
  margin-top: var(--space-4);
  padding: var(--space-5);
  border-radius: var(--radius-lg);
}

.reference-definition {
  color: #ffffff;
  background: linear-gradient(135deg, #082f5f, #145f9e);
}

.reference-example {
  color: #082f5f;
  background: #dcefff;
  border: 2px solid #8cc5ed;
}

.reference-story {
  color: var(--color-text);
  background: color-mix(in srgb, #c58b45 12%, var(--color-surface));
  border: 1px solid color-mix(in srgb, #9b632b 50%, var(--color-border));
}

.reference-definition h2,
.reference-example h2,
.reference-story h2 {
  color: inherit;
}

.reference-definition p,
.reference-example p,
.reference-story p {
  margin: 0;
  line-height: 1.75;
}

.reference-story p {
  max-width: none;
}

.worksheet-choice-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.worksheet-choice-row .worksheet-button {
  width: 100%;
  min-height: 52px;
}

@media (max-width: 560px) {
  .worksheet-choice-row {
    grid-template-columns: 1fr;
  }
}

.license-note {
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}

[data-theme="dark"] .reference-example {
  color: #dcefff;
  background: #173b58;
  border-color: #46779d;
}

.prompt-label small,
.reward-strip small,
.story-banner span small {
  display: block;
  margin-top: 0.18rem;
  font-size: var(--text-xs);
  font-weight: 600;
  opacity: 0.78;
}

.daily-idiom {
  position: relative;
}

.idiom-card:nth-child(1) { --idiom-color: #287d76; }
.idiom-card:nth-child(2) { --idiom-color: #bd7043; }
.idiom-card:nth-child(3) { --idiom-color: #7464a0; }
.idiom-card:nth-child(4) { --idiom-color: #5d8451; }
.idiom-card:nth-child(5) { --idiom-color: #b76578; }

.idiom-title {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.idiom-title h1 {
  margin: 0;
}

.idiom-title span {
  color: var(--color-primary);
  font-weight: 700;
}

.story-paper {
  margin-block: var(--space-5);
  padding: var(--space-5);
  background: color-mix(in srgb, #bd7043 7%, var(--color-bg));
  border-left: 5px solid #bd7043;
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

.story-paper p {
  font-size: var(--text-lg);
  line-height: 1.75;
}

.story-paper ruby {
  padding-inline: 0.05em;
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--color-gold) 65%, transparent);
  text-underline-offset: 0.18em;
}

.story-paper rt {
  color: var(--color-accent);
  font-family: var(--font-body);
  font-size: 0.48em;
  font-weight: 700;
}

.idiom-meaning {
  margin-block: var(--space-4);
  padding: var(--space-4);
  color: var(--color-primary);
  background: var(--color-primary-soft);
  border-radius: var(--radius-md);
  font-weight: 700;
}

.source-note {
  display: inline-block;
  margin-top: var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.answer-feedback {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-block: var(--space-5);
  padding: var(--space-5);
  border: 2px solid currentColor;
  border-radius: var(--radius-lg);
}

.answer-feedback.correct {
  color: var(--color-success);
  background: var(--color-success-soft);
}

.answer-feedback.retry {
  color: var(--color-error);
  background: var(--color-error-soft);
}

.answer-mark {
  width: clamp(52px, 9vw, 72px);
  height: clamp(52px, 9vw, 72px);
  flex: none;
  display: grid;
  place-items: center;
}

.answer-icon {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-width: 6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.answer-feedback > span:last-child {
  display: grid;
  gap: var(--space-1);
}

.answer-feedback strong {
  font-size: var(--text-lg);
}

.answer-feedback small {
  color: var(--color-text);
  font-size: var(--text-base);
  font-weight: 500;
}

.listen-button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  padding: var(--space-2) var(--space-4);
  color: var(--color-primary);
  background: var(--color-surface);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-full);
  font-weight: 700;
}

.listen-button:hover {
  color: var(--color-inverse);
  background: var(--color-primary);
}

.listen-button svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.check-list {
  display: grid;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.check-button {
  min-height: 66px;
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  color: var(--color-text);
  text-align: left;
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
}

.check-button.selected {
  color: var(--color-success);
  background: var(--color-success-soft);
  border-color: var(--color-success);
}

.check-box {
  width: 30px;
  height: 30px;
  flex: none;
  display: grid;
  place-items: center;
  border: 2px solid currentColor;
  border-radius: var(--radius-sm);
  font-weight: 700;
}

.question-paper {
  padding: var(--space-5);
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  margin-bottom: var(--space-5);
}

.question-samples {
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.question-original {
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.question-original small {
  color: var(--color-text-muted);
}

.question-original p {
  font-size: var(--text-lg);
  font-weight: 700;
}

.analysis-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.analysis-grid section {
  min-height: 150px;
  display: grid;
  align-content: start;
  gap: var(--space-2);
  padding: var(--space-4);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.analysis-grid section > span {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  color: var(--color-inverse);
  background: var(--color-primary);
  border-radius: 50%;
  font-weight: 700;
}

.analysis-grid small,
.keyword-note span {
  color: var(--color-text-muted);
}

.analysis-grid strong {
  font-size: var(--text-base);
}

.analysis-grid .first-step-card {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
}

.keyword-note {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.keyword-note strong {
  padding: var(--space-2) var(--space-4);
  color: var(--color-primary);
  background: var(--color-primary-soft);
  border-radius: var(--radius-full);
  font-size: var(--text-lg);
}

.teacher-shell {
  max-width: 920px;
  margin: 0 auto;
}

.teacher-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.teacher-heading h1 {
  font-size: var(--text-xl);
}

.teacher-heading p:last-child {
  color: var(--color-text-muted);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.metric-card {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-5);
  background: var(--color-primary-soft);
  border-radius: var(--radius-lg);
}

.metric-card strong {
  color: var(--color-primary);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  line-height: 1;
}

.metric-card span {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.teacher-log h2 {
  margin-bottom: var(--space-5);
}

.record-list {
  display: grid;
}

.record-row {
  display: grid;
  grid-template-columns: auto minmax(150px, 1fr) auto auto;
  align-items: center;
  gap: var(--space-4);
  padding-block: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.record-number {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  border-radius: var(--radius-full);
  font-weight: 700;
}

.record-row > span:nth-child(2) {
  display: grid;
}

.record-row small,
.record-row > span:nth-child(3) {
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}

.status-pill {
  padding: var(--space-1) var(--space-3);
  color: var(--color-accent);
  background: var(--color-accent-soft);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
}

.status-pill.done {
  color: var(--color-success);
  background: var(--color-success-soft);
}

.empty-state {
  padding: var(--space-8);
  color: var(--color-text-muted);
  text-align: center;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
}

.word-token {
  display: inline-block;
  margin: var(--space-1);
  padding: var(--space-1) var(--space-2);
  color: var(--color-text);
  background: transparent;
  border-bottom: 3px solid transparent;
  border-radius: var(--radius-sm);
}

button.word-token:hover,
button.word-token.selected {
  color: var(--color-primary);
  background: var(--color-primary-soft);
  border-bottom-color: var(--color-primary);
}

.completion {
  text-align: center;
}

.completion-mark {
  width: 82px;
  height: 82px;
  display: grid;
  place-items: center;
  margin: 0 auto var(--space-5);
  color: var(--color-success);
  background: var(--color-success-soft);
  border-radius: var(--radius-full);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  animation: pop 360ms cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

@keyframes pop {
  from {
    opacity: 0;
    transform: scale(0.65);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.completion .steps-done {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-block: var(--space-6);
}

.completion .steps-done span {
  padding: var(--space-2) var(--space-3);
  color: var(--color-success);
  background: var(--color-success-soft);
  border-radius: var(--radius-full);
  font-weight: 700;
}

.site-footer {
  width: min(100% - var(--space-8), var(--content));
  margin: 0 auto;
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
  font-size: var(--text-xs);
}

.compact-footer {
  min-height: 10px;
  padding: 0;
  border-top: 0;
}

.compact-footer:has(.visitor-counter[hidden]) {
  display: none;
}

.library-pagination {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.visitor-counter {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
  width: 100%;
}

.visitor-counter span {
  padding: 0.45rem 0.75rem;
  color: var(--color-primary);
  background: color-mix(in srgb, var(--color-primary) 9%, var(--color-surface));
  border: 1px solid color-mix(in srgb, var(--color-primary) 24%, var(--color-border));
  border-radius: var(--radius-full);
}

.visitor-counter strong {
  font-variant-numeric: tabular-nums;
}

.member-portal {
  position: fixed;
  inset: 0;
  z-index: 100;
  overflow-y: auto;
  padding: clamp(1rem, 3vw, 2.5rem);
  background: color-mix(in srgb, var(--color-background) 96%, transparent);
  backdrop-filter: blur(16px);
}

.portal-open {
  overflow: hidden;
}

.portal-panel {
  width: min(100%, 70rem);
  margin: 0 auto;
}

.portal-panel-narrow {
  width: min(100%, 36rem);
}

.portal-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.portal-heading h1 {
  margin-block: 0.2rem;
  color: var(--color-primary);
}

.portal-close {
  flex: 0 0 auto;
  font-size: 1.8rem;
}

.portal-message {
  margin-block: 0.75rem;
  padding: 0.85rem 1rem;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-md);
}

.portal-message.error {
  color: var(--color-error);
  background: var(--color-error-soft);
  border-color: var(--color-error);
}

.portal-message.success {
  color: var(--color-success);
  background: var(--color-success-soft);
  border-color: var(--color-success);
}

.portal-card {
  margin-bottom: 1rem;
  padding: clamp(1rem, 3vw, 1.5rem);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.portal-card h2 {
  margin-top: 0;
  color: var(--color-primary);
}

.portal-card-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.compact-button {
  width: auto;
  min-height: 44px;
}

.portal-form {
  display: grid;
  gap: 1rem;
  padding: 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.portal-form.compact {
  margin-top: 1rem;
  padding: 1rem;
  background: var(--color-background);
}

.portal-form label {
  display: grid;
  gap: 0.4rem;
  font-weight: 700;
}

.portal-form input,
.portal-form select,
.portal-form textarea {
  width: 100%;
  min-height: 3rem;
  padding: 0.7rem 0.8rem;
  color: var(--color-text);
  background: var(--color-background);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font: inherit;
}

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

.content-editor .wide-field {
  grid-column: 1 / -1;
}

.portal-form textarea {
  min-height: 7rem;
  resize: vertical;
}

.portal-form .consent-check {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
}

.portal-form .consent-check input {
  width: 1.35rem;
  min-height: 1.35rem;
}

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

.portal-summary-grid article {
  display: grid;
  gap: 0.25rem;
  padding: 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.portal-summary-grid strong {
  color: var(--color-primary);
  font-size: 1.45rem;
}

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

.student-account-list,
.teacher-content-list {
  display: grid;
  gap: 0.6rem;
}

.student-account-list button,
.teacher-content-list button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  min-height: 3.5rem;
  padding: 0.75rem;
  color: var(--color-text);
  text-align: left;
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.student-account-list button span,
.teacher-content-list button span {
  display: grid;
  gap: 0.15rem;
}

.student-account-list small,
.teacher-content-list small,
.ticket-list small {
  color: var(--color-text-muted);
}

.parent-report,
.ticket-list {
  display: grid;
  gap: 0.5rem;
  margin-top: 1rem;
}

.management-list {
  display: grid;
  gap: 0.75rem;
}

.management-row {
  display: grid;
  grid-template-columns: minmax(10rem, 1fr) repeat(3, minmax(8rem, auto)) auto;
  gap: 0.6rem;
  align-items: center;
  padding: 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.management-row span,
.ticket-row {
  display: grid;
  gap: 0.2rem;
}

.management-row select,
.management-row input,
.ticket-row select {
  min-height: 44px;
  color: var(--color-text);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.ticket-row {
  padding: 0.75rem;
  background: var(--color-background);
  border-radius: var(--radius-sm);
}

.parent-report p,
.ticket-list p {
  display: grid;
  gap: 0.2rem;
  margin: 0;
  padding: 0.65rem;
  background: var(--color-background);
  border-radius: var(--radius-sm);
}

.portal-actions {
  display: flex;
  justify-content: center;
  padding: 1rem;
}

.portal-footnote {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

@media (max-width: 720px) {
  .member-link {
    display: inline-flex;
    min-width: 52px;
    padding-inline: 0.65rem;
  }

  .teacher-link:not(.member-link) {
    display: none;
  }

  .portal-columns,
  .portal-summary-grid,
  .content-editor,
  .management-row {
    grid-template-columns: 1fr;
  }

  .member-portal {
    padding: 0.75rem;
  }
}

.notice {
  position: fixed;
  left: 50%;
  bottom: var(--space-6);
  z-index: 20;
  max-width: min(90vw, 520px);
  padding: var(--space-3) var(--space-5);
  color: var(--color-inverse);
  background: var(--color-primary);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 20px);
  transition:
    opacity var(--transition),
    transform var(--transition);
}

.notice.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

@media (max-width: 720px) {
  .guide-choice-grid,
  .method-grid,
  .outline-list li {
    grid-template-columns: 1fr;
  }

  .example-practice,
  .method-panel,
  .finish-check {
    padding: var(--space-4);
  }
  .path-grid,
  .pinyin-word-results,
  .analysis-grid {
    grid-template-columns: 1fr;
  }

  .path-card {
    min-height: 92px;
  }

  .analysis-grid section {
    min-height: auto;
  }

  .daily-idiom strong {
    font-size: clamp(2rem, 12vw, 3rem);
  }

  .site-header {
    min-height: 76px;
  }

  .brand-mark {
    width: 40px;
    height: 40px;
  }

  .brand small {
    display: none;
  }

  .icon-button {
    width: 44px;
    height: 44px;
  }

  .teacher-link {
    padding-inline: var(--space-3);
    font-size: var(--text-xs);
  }

  #app {
    width: min(100% - var(--space-5), var(--content));
  }

  .home-intro {
    grid-template-columns: 1fr;
    gap: var(--space-5);
  }

  .seven-steps {
    justify-content: flex-start;
  }

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

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

  .photo-drop {
    min-height: 190px;
  }

  .difficulty-card {
    min-height: 108px;
    padding: var(--space-4);
  }

  .coach-feature-card {
    grid-column: auto;
  }

  .difficulty-card .card-icon {
    width: 44px;
    height: 44px;
  }

  .story-banner {
    min-height: 96px;
    padding: var(--space-4);
  }

  .story-banner .story-icon {
    width: 44px;
    height: 44px;
  }

  .sample-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: var(--space-1);
  }

  .word-relations,
  .idiom-grid {
    grid-template-columns: 1fr;
  }

  .answer-feedback {
    align-items: flex-start;
  }

  .flow-topbar {
    grid-template-columns: auto 1fr;
  }

  .step-word {
    display: none;
  }

  .activity-card {
    padding: var(--space-5);
    border-radius: var(--radius-lg);
  }

  .action-row {
    display: grid;
    grid-template-columns: 1fr;
  }

  .listen-button {
    width: 100%;
    justify-content: center;
  }

  .teacher-heading {
    align-items: stretch;
    flex-direction: column;
  }

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

  .record-row {
    grid-template-columns: auto 1fr auto;
  }

  .record-row > span:nth-child(3) {
    grid-column: 2;
  }

  .status-pill {
    grid-column: 3;
    grid-row: 1 / span 2;
  }

  .primary-button,
  .secondary-button {
    width: 100%;
  }

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

  .stroke-script-switch {
    grid-template-columns: 1fr;
  }

  .site-footer {
    width: min(100% - var(--space-5), var(--content));
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: var(--space-1);
    padding-block: var(--space-3);
  }
}

@media print {
  @page {
    size: A4 portrait;
    margin: 14mm;
  }

  body * {
    visibility: hidden !important;
  }

  .character-worksheet,
  .character-worksheet * {
    visibility: visible !important;
  }

  .character-worksheet {
    position: absolute;
    inset: 0;
    width: 100%;
    display: block !important;
    color: #111;
    background: #fff;
    font-family: "Free HK Kai", serif;
  }

  .writing-practice {
    display: none !important;
  }

  .character-worksheet header {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 1rem;
    padding-bottom: 12mm;
    border-bottom: 2px solid #222;
  }

  .character-worksheet header div {
    display: grid;
    gap: 0.2rem;
  }

  .character-worksheet header strong {
    font-size: 22pt;
  }

  .character-worksheet header span,
  .character-worksheet header p {
    font-size: 11pt;
  }

  .worksheet-word {
    display: grid;
    grid-template-columns: 28mm 1fr;
    align-items: center;
    gap: 0.2rem 8mm;
    margin: 10mm 0;
  }

  .worksheet-word strong {
    grid-row: 1 / span 2;
    font-size: 54pt;
    line-height: 1;
  }

  .worksheet-word span {
    font-size: 13pt;
  }

  .worksheet-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: 1.5px solid #555;
    border-left: 1.5px solid #555;
  }

  .worksheet-cell {
    aspect-ratio: 1;
    display: grid;
    place-items: center;
    border-right: 1.5px solid #555;
    border-bottom: 1.5px solid #555;
    background:
      linear-gradient(transparent 49.5%, #bbb 50%, transparent 50.5%),
      linear-gradient(90deg, transparent 49.5%, #bbb 50%, transparent 50.5%);
    font-family: "Free HK Kai", serif;
    font-size: 42pt;
  }

  .worksheet-cell:nth-child(2) {
    color: #555;
  }

  .worksheet-cell:nth-child(3) {
    color: #888;
  }

  .worksheet-cell:nth-child(4) {
    color: #bbb;
  }
}

.coach-entry-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-5);
}

.coach-entry-card {
  height: 100%;
  margin: 0;
}

.idiom-search-box {
  margin-top: var(--space-5);
  padding: var(--space-5);
  background: var(--color-primary-soft);
  border-radius: var(--radius-lg);
}

.idiom-search-results {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
  margin: var(--space-4) 0;
}

.check-photo-entry {
  width: 100%;
  display: grid;
  grid-template-columns: 64px 1fr;
  align-items: center;
  gap: var(--space-4);
  margin: var(--space-5) 0;
  padding: var(--space-5);
  color: var(--color-text);
  text-align: left;
  background: linear-gradient(135deg, var(--color-primary-soft), var(--color-surface));
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-lg);
}

.check-photo-entry > span {
  display: grid;
  width: 64px;
  height: 64px;
  place-items: center;
  color: var(--color-primary);
}

.check-photo-entry svg {
  width: 48px;
  height: 48px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
}

.check-photo-entry strong,
.check-photo-entry small,
.check-button strong,
.check-button small,
.check-button em {
  display: block;
}

.check-photo-entry strong {
  color: var(--color-primary);
  font-size: var(--text-lg);
}

.check-photo-entry small,
.check-button small {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.check-or {
  margin: var(--space-5) 0 var(--space-3);
  color: var(--color-text-muted);
  font-weight: 700;
  text-align: center;
}

.check-button {
  align-items: flex-start;
}

.check-button > span:last-child {
  display: grid;
  gap: var(--space-1);
}

.check-button em {
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-style: normal;
}

.photo-analysis-result {
  display: grid;
  gap: var(--space-5);
}

.analysis-focus,
.analysis-first-step,
.photo-analysis-result > section,
.photo-analysis-result details,
.analysis-caution {
  padding: var(--space-5);
  border-radius: var(--radius-lg);
}

.analysis-focus {
  color: var(--color-primary);
  background: var(--color-primary-soft);
  border-left: 6px solid var(--color-primary);
}

.analysis-first-step {
  color: var(--color-text);
  background: var(--color-gold-soft);
  border: 2px solid var(--color-gold);
}

.analysis-focus strong,
.analysis-first-step strong {
  font-size: var(--text-lg);
}

.analysis-focus p,
.analysis-first-step p {
  margin-top: var(--space-2);
  font-size: var(--text-lg);
}

.photo-analysis-result > section,
.photo-analysis-result details {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
}

.photo-analysis-result ul {
  display: grid;
  gap: var(--space-3);
  margin: var(--space-3) 0 0;
  padding-left: 1.25rem;
}

.analysis-word-list li {
  display: grid;
  gap: var(--space-1);
}

.analysis-caution {
  background: var(--color-accent-soft);
  border-left: 5px solid var(--color-accent);
}

@media (max-width: 700px) {
  .coach-entry-grid,
  .idiom-search-results {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 340px) {
  .site-header {
    width: calc(100% - var(--space-4));
    gap: var(--space-2);
  }

  .brand {
    gap: var(--space-1);
    padding-inline: var(--space-1);
  }

  .brand > span {
    display: none;
  }

  .brand-short {
    display: inline;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
  }

  .header-actions {
    gap: var(--space-1);
  }

  .teacher-link {
    padding-inline: var(--space-2);
  }
}

@media (max-width: 500px) {
  .brand > span {
    display: none;
  }

  .brand-short {
    display: inline;
  }
}

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

/* HanziPilot brand system and integrated learning modules */
.brand {
  position: relative;
}

.brand::after {
  position: absolute;
  right: 0.5rem;
  bottom: 0.15rem;
  width: 2.1rem;
  height: 2px;
  background: var(--color-gold);
  content: "";
}

.primary-button {
  background: var(--color-primary);
  box-shadow: 0 5px 0 color-mix(in srgb, var(--color-primary) 72%, #000);
}

.primary-button:hover {
  background: var(--color-primary-hover);
}

.eyebrow,
.today-label {
  color: var(--color-accent);
}

.daily-learning-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.poem-banner {
  border-color: color-mix(in srgb, var(--color-gold) 54%, var(--color-border));
  background:
    linear-gradient(135deg, var(--color-gold-soft), var(--color-surface));
}

.glyph-standard-note {
  display: grid;
  gap: var(--space-2);
  margin-top: var(--space-4);
  padding: var(--space-4);
  color: var(--color-text);
  background: var(--color-gold-soft);
  border: 1px solid color-mix(in srgb, var(--color-gold) 55%, var(--color-border));
  border-left: 5px solid var(--color-gold);
  border-radius: var(--radius-md);
}

.glyph-standard-note strong {
  color: var(--color-primary);
}

.glyph-standard-note a,
.official-reference {
  color: var(--color-primary);
  font-weight: 700;
}

.polyphonic-section {
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.polyphonic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.polyphonic-grid article {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-4);
  text-align: left;
  background: var(--color-primary-soft);
  border: 1px solid color-mix(in srgb, var(--color-primary) 22%, var(--color-border));
  border-radius: var(--radius-md);
}

.polyphonic-grid strong {
  color: var(--color-primary);
  font-size: var(--text-lg);
}

.polyphonic-grid span {
  color: var(--color-accent);
  font-weight: 700;
}

.pinyin-word-results {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.pinyin-word-card {
  min-height: 44px;
  display: grid;
  grid-template-columns: minmax(9rem, 0.65fr) minmax(0, 1.35fr);
  gap: var(--space-4);
  width: 100%;
  padding: var(--space-4);
  text-align: left;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.pinyin-word-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-1px);
}

.pinyin-word-card > span:first-child,
.candidate-meaning,
.candidate-example,
.candidate-relations {
  min-width: 0;
  display: grid;
  align-content: start;
  gap: 0.2rem;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.pinyin-word-card > span:first-child {
  grid-template-columns: minmax(0, 1fr);
}

.candidate-meaning,
.candidate-example {
  padding: 0.75rem 0.9rem;
  border-radius: 0.75rem;
}

.candidate-meaning {
  color: #ffffff;
  background: #0b3d73;
}

.candidate-example {
  color: #092b50;
  background: #cbe8ff;
  border: 1px solid #86c5ef;
}

.pinyin-word-card strong {
  min-width: 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.55rem;
  color: var(--color-primary);
  font-size: var(--text-lg);
  line-height: 1.35;
  overflow-wrap: anywhere;
  word-break: break-all;
}

.pinyin-word-card strong i {
  flex: 0 0 auto;
  width: 1.65rem;
  height: 1.65rem;
  display: grid;
  place-items: center;
  color: var(--color-inverse);
  background: var(--color-primary);
  border-radius: 50%;
  font-size: var(--text-xs);
  font-style: normal;
}

.pinyin-word-card em,
.pinyin-word-card small {
  min-width: 0;
  color: var(--color-text-muted);
  font-style: normal;
  line-height: 1.45;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.candidate-meaning b,
.candidate-example b {
  color: inherit;
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
}

.learning-info-stack {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-3);
}

.learning-definition,
.learning-example {
  display: grid;
  grid-template-columns: minmax(5.5rem, auto) 1fr;
  gap: var(--space-3);
  align-items: start;
  padding: var(--space-4);
  border-radius: var(--radius-md);
}

.learning-definition {
  color: #ffffff;
  background: linear-gradient(135deg, #062c59, #115896);
  box-shadow: 0 8px 24px rgba(8, 47, 95, 0.2);
}

.learning-example {
  color: #082f5f;
  background: linear-gradient(135deg, #d8efff, #b9ddf7);
  border: 2px solid #7ebee9;
}

.learning-definition > span,
.learning-example > span {
  font-weight: 800;
  letter-spacing: 0.04em;
}

.learning-definition p,
.learning-example p {
  margin: 0;
  font-size: var(--text-base);
  font-weight: 600;
}

.learning-example-missing {
  border-style: dashed;
}

.privacy-notice {
  border: 1px solid color-mix(in srgb, var(--color-accent) 28%, var(--color-border));
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-accent) 5%, var(--color-surface));
}

.privacy-notice summary {
  min-height: 44px;
  display: flex;
  align-items: center;
  padding: 0.75rem 1rem;
  color: var(--color-accent);
  font-weight: 800;
  cursor: pointer;
}

.privacy-notice-body {
  padding: 0 1rem 1rem;
  color: var(--color-text);
}

.privacy-notice-body p {
  margin: 0.65rem 0 0;
  line-height: 1.65;
}

.legal-copy {
  line-height: 1.7;
}

.legal-version,
.legal-source {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.footer-policy-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 1rem;
}

.footer-policy-links button {
  appearance: none;
  min-height: 44px;
  padding: 0;
  border: 0;
  color: inherit;
  background: transparent;
  font: inherit;
  text-decoration: underline;
  text-underline-offset: 0.2em;
  cursor: pointer;
}

.visit-history {
  display: grid;
  gap: 0.45rem;
}

.visit-history p {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin: 0;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--color-border);
}

.home-intro {
  position: relative;
  overflow: hidden;
  min-width: 0;
  padding: clamp(1.35rem, 4vw, 3rem);
  color: #ffffff;
  background:
    linear-gradient(90deg, var(--color-accent) 0 0.45rem, transparent 0.45rem),
    linear-gradient(135deg, #062e5d, #0b477b);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-bottom: 0.45rem solid #d7ab34;
  box-shadow: 0 18px 42px rgba(8, 47, 95, 0.2);
}

.home-intro h1,
.home-intro p,
.home-intro .eyebrow {
  color: #ffffff;
  overflow-wrap: anywhere;
}

@media (max-width: 760px), (min-resolution: 1.75dppx) {
  .home-intro {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .home-intro h1 {
    max-width: none;
    font-size: clamp(1.8rem, 8vw, 2.65rem);
  }

  .script-selector {
    grid-template-columns: 1fr;
  }

  .script-grid i {
    width: 100%;
    max-width: 76px;
    font-size: clamp(2rem, 11vw, 3.4rem);
  }
}

.difficulty-card,
.story-banner {
  box-shadow: 0 8px 22px rgba(8, 47, 95, 0.08);
}

.difficulty-card:hover,
.story-banner:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 30px rgba(8, 47, 95, 0.14);
}

.candidate-relations {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
}

.candidate-relations i {
  min-width: 0;
  color: var(--color-text-muted);
  font-style: normal;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.related-word-list strong,
.related-word-list small,
.learning-definition p,
.learning-example p {
  min-width: 0;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.poem-results,
.poem-library {
  margin-top: var(--space-6);
}

.poem-library-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.poem-library-heading span {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.poem-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.poem-card {
  min-height: 9rem;
  display: grid;
  align-content: start;
  gap: 0.3rem;
  padding: var(--space-4);
  text-align: left;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.poem-card:hover {
  border-color: var(--color-gold);
  box-shadow: var(--shadow-sm);
}

.poem-card span,
.poem-card small {
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}

.poem-card strong {
  color: var(--color-primary);
  font-size: var(--text-lg);
}

.poem-card p {
  margin-top: var(--space-2);
}

.poem-library summary {
  min-height: 44px;
  padding: var(--space-3) 0;
  color: var(--color-primary);
  cursor: pointer;
  font-weight: 700;
}

.poem-detail {
  text-align: center;
}

.poem-author,
.library-note,
.source-note {
  color: var(--color-text-muted);
}

.poem-colour-key {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.poem-colour-key span {
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
}

.poem-colour-key .known-key {
  color: #8d1e2a;
  background: #fff0f1;
  border: 1px solid #e4aab0;
}

.poem-colour-key .completed-key {
  color: #164f7c;
  background: #edf6fd;
  border: 1px solid #a8cee9;
}

.poem-paper {
  max-width: 38rem;
  display: grid;
  gap: var(--space-3);
  margin: var(--space-6) auto;
  padding: var(--space-8);
  background:
    linear-gradient(90deg, transparent 0 2.7rem, color-mix(in srgb, var(--color-accent) 18%, transparent) 2.7rem 2.8rem, transparent 2.8rem),
    var(--color-gold-soft);
  border: 1px solid color-mix(in srgb, var(--color-gold) 45%, var(--color-border));
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.poem-paper p {
  font-size: clamp(1.25rem, 1rem + 1vw, 1.8rem);
  letter-spacing: 0.08em;
}

.poem-known {
  padding: 0 0.08em;
  color: #9f2130;
  background: #fff0f1;
  border-radius: 0.18em;
  font-weight: 800;
}

.poem-completed {
  color: #185580;
}

[data-theme="dark"] .poem-colour-key .known-key,
[data-theme="dark"] .poem-known {
  color: #ffd7da;
  background: #5a2830;
  border-color: #8b4952;
}

[data-theme="dark"] .poem-colour-key .completed-key {
  color: #d5ecff;
  background: #1c3c59;
  border-color: #3b6385;
}

[data-theme="dark"] .poem-completed {
  color: #b9dcf6;
}

.site-footer {
  border-top-color: var(--color-gold);
}

.smart-search-card {
  max-width: 54rem;
  margin-inline: auto;
}

.smart-search-group {
  margin-top: var(--space-6);
}

.smart-search-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto auto;
  gap: var(--space-3);
  align-items: stretch;
}

.smart-search-row .text-input {
  min-height: 3.75rem;
  font-size: clamp(1.1rem, 1rem + 0.5vw, 1.35rem);
  border-width: 2px;
  border-color: color-mix(in srgb, var(--color-primary) 52%, var(--color-border));
}

.smart-search-row .primary-button {
  min-width: 8.5rem;
}

.search-tool-button {
  min-width: 5.5rem;
  min-height: 3.75rem;
  padding: var(--space-2) var(--space-3);
  display: grid;
  grid-template-columns: 1.4rem auto;
  grid-template-rows: auto auto;
  align-content: center;
  align-items: center;
  column-gap: var(--space-2);
  color: var(--color-primary);
  background: var(--color-surface-2);
  border: 1px solid color-mix(in srgb, var(--color-primary) 36%, var(--color-border));
  border-radius: var(--radius-md);
}

.search-tool-button:hover,
.search-tool-button.is-listening {
  color: var(--color-text-inverse);
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.search-tool-button svg {
  grid-row: 1 / 3;
  width: 1.4rem;
  height: 1.4rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.search-tool-button span,
.search-tool-button small {
  line-height: 1.15;
  text-align: left;
}

.search-tool-button span {
  font-weight: 800;
}

.search-tool-button small {
  font-size: var(--text-xs);
  opacity: 0.78;
}

.smart-search-assist-status {
  min-height: 1.5em;
  margin-top: var(--space-2);
  color: var(--color-text-muted);
}

.smart-search-assist-status[data-tone="active"] {
  color: var(--color-primary);
  font-weight: 700;
}

.smart-search-assist-status[data-tone="success"] {
  color: var(--color-success);
  font-weight: 700;
}

.smart-search-assist-status[data-tone="error"] {
  color: var(--color-error);
  font-weight: 700;
}

.smart-search-privacy {
  margin: var(--space-2) 0 0;
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  line-height: 1.5;
}

.handwriting-backdrop {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: grid;
  place-items: center;
  padding: var(--space-4);
  background: color-mix(in srgb, var(--color-text) 44%, transparent);
  backdrop-filter: blur(5px);
}

.handwriting-dialog {
  width: min(32rem, 100%);
  max-height: calc(100dvh - var(--space-8));
  overflow-y: auto;
  padding: var(--space-6);
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.handwriting-dialog header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
}

.handwriting-dialog h2 {
  margin-top: var(--space-1);
  font-size: var(--text-xl);
}

.handwriting-dialog > p {
  margin-top: var(--space-3);
}

.smart-handwriting-canvas {
  width: min(100%, 25rem);
  aspect-ratio: 1;
  margin: var(--space-5) auto 0;
  display: block;
  touch-action: none;
  cursor: crosshair;
  background-color: #fffdf8;
  background-image:
    linear-gradient(to right, transparent calc(50% - 0.5px), #d7b882 50%, transparent calc(50% + 0.5px)),
    linear-gradient(to bottom, transparent calc(50% - 0.5px), #d7b882 50%, transparent calc(50% + 0.5px)),
    linear-gradient(45deg, transparent calc(50% - 0.5px), #eadbc2 50%, transparent calc(50% + 0.5px)),
    linear-gradient(-45deg, transparent calc(50% - 0.5px), #eadbc2 50%, transparent calc(50% + 0.5px));
  border: 2px solid var(--color-gold);
  border-radius: var(--radius-md);
}

.handwriting-edit-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.handwriting-candidates {
  margin-top: var(--space-5);
}

.handwriting-candidates > p {
  margin-bottom: var(--space-2);
  font-weight: 800;
}

.handwriting-candidates small {
  display: block;
  color: var(--color-text-muted);
  font-weight: 500;
}

.handwriting-candidate-list {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: var(--space-2);
}

.handwriting-candidate-list button {
  min-height: 3.5rem;
  font-family: var(--font-cjk, var(--font-body));
  font-size: var(--text-xl);
  color: var(--color-primary);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.handwriting-candidate-list button:hover {
  color: var(--color-text-inverse);
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.handwriting-dialog .handwriting-privacy {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.smart-examples {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.worksheet-button {
  width: 100%;
  margin-top: var(--space-5);
  border-color: color-mix(in srgb, var(--color-gold) 62%, var(--color-border));
}

@media (max-width: 700px) {
  .speech-mode-grid,
  .speech-score-grid {
    grid-template-columns: 1fr 1fr;
  }

  .speech-service-status {
    grid-template-columns: 1fr;
  }

  .service-retry {
    grid-column: 1;
    grid-row: auto;
    justify-self: start;
  }

  .speech-result-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .speech-word-list li {
    grid-template-columns: 1fr auto;
  }

  .speech-word-list small {
    grid-column: 1 / -1;
  }

  .smart-search-row {
    grid-template-columns: 1fr;
  }

  .smart-search-row .primary-button {
    width: 100%;
  }

  .search-tool-button {
    grid-column: span 1;
    grid-template-columns: 1.4rem auto auto;
    grid-template-rows: auto;
    justify-content: center;
    min-height: 3.25rem;
  }

  .search-tool-button svg {
    grid-row: auto;
  }

  .search-tool-button span,
  .search-tool-button small {
    text-align: center;
  }

  .handwriting-dialog {
    padding: var(--space-4);
  }

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

  .handwriting-edit-actions .primary-button {
    grid-column: 1 / -1;
  }

  .daily-learning-grid,
  .poem-grid,
  .pinyin-word-card {
    grid-template-columns: 1fr;
  }

  .candidate-relations {
    grid-template-columns: 1fr;
  }

  .learning-definition,
  .learning-example {
    grid-template-columns: 1fr;
  }

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

  .related-word-list > span {
    grid-template-columns: minmax(4rem, auto) 1fr;
  }

  .poem-paper {
    padding: var(--space-6) var(--space-4) var(--space-6) var(--space-10);
  }
}

@media (max-width: 430px) {
  .speech-entry-card {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .speech-entry-card > .arrow {
    display: none;
  }

  .speech-entry-icon {
    width: 3.5rem;
    height: 3.5rem;
  }

  .speech-mode-grid,
  .speech-score-grid,
  .recorder-actions,
  .speech-steps,
  .speech-target-row,
  .speech-self-check {
    grid-template-columns: 1fr;
  }

  .recorder-panel {
    padding: var(--space-4);
  }
}

@media print {
  .site-header,
  .site-footer,
  .notice,
  .action-row,
  .listen-button,
  .back-button {
    display: none !important;
  }
}
.checked-answer-list {
  display: grid;
  gap: 0.8rem;
}

.checked-answer {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 0.85rem;
  padding: 1rem;
  border: 2px solid var(--color-border);
  border-radius: 1rem;
  background: var(--color-surface);
}

.checked-answer-status {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border-radius: 999px;
  font-size: 1.7rem;
  font-weight: 800;
}

.checked-answer h4 {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem;
  margin: 0 0 0.5rem;
}

.checked-answer h4 span {
  font-size: 0.9rem;
}

.checked-answer p {
  margin: 0.35rem 0;
}

.checked-answer.is-correct {
  border-color: #2f7a48;
}

.checked-answer.is-correct .checked-answer-status {
  color: #fff;
  background: #2f7a48;
}

.checked-answer.is-wrong {
  border-color: #b83b3b;
}

.checked-answer.is-wrong .checked-answer-status {
  color: #fff;
  background: #b83b3b;
}

.checked-answer.is-uncertain {
  border-color: #a36a19;
}

.checked-answer.is-uncertain .checked-answer-status {
  color: #fff;
  background: #a36a19;
}

/* Bilingual lookup: separate meaning from examples, including small screens. */
.pinyin-word-card {
  grid-template-columns: minmax(0, 1fr);
  align-content: start;
}
.pinyin-word-card > * { min-width: 0; }
.english-reference {
  display: block;
  border-left: 4px solid #356fa0;
  border-radius: 10px;
  padding: 16px 18px;
  background: #eaf3fa;
  color: #173e60;
  min-width: 0;
  overflow-wrap: anywhere;
  line-height: 1.6;
}
.english-reference b, .english-reference [data-english-body],
.english-sense, .english-reference > small { display: block; }
.english-reference b { margin-bottom: 6px; font-size: 15px; }
.english-reference [data-english-body] { font-family: inherit; font-size: 18px; }
.english-reference > small { font-size: 12px; margin-top: 8px; color: #466077; }
.english-attribution { font-size: 12px; color: inherit; }
.english-compact { margin: 9px 0; padding: 10px 12px; }
.english-compact [data-english-body] { font-size: 16px; }
.english-retry { display: block; min-height: 44px; margin-top: 8px; }
.reading-script-switch {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px;
  padding-bottom: 18px; margin-bottom: 22px; border-bottom: 1px solid var(--border, #cdd8e3);
}
.reading-script-switch > span { margin-right: auto; font-weight: 700; }
.reading-script-switch small { display: block; font-size: 12px; }
.reading-script-switch button {
  min-height: 52px; padding: 8px 18px; border-radius: 12px;
  border: 2px solid #aebdcc; background: transparent; color: inherit;
}
.reading-script-switch button[aria-pressed="true"] {
  border-color: #225b84; background: #e3eff9; color: #173e60;
  box-shadow: 0 0 0 1px #225b84;
}
.lookup-recovery { padding: 16px; border: 1px solid #a36a19; border-radius: 12px; }
[data-theme="dark"] .english-reference { background: #20384a; color: #e2f1ff; }
[data-theme="dark"] .english-reference > small { color: #c0d5e5; }
[data-theme="dark"] .reading-script-switch button[aria-pressed="true"] { background: #234660; color: #fff; }
@media (max-width: 400px) {
  .reading-script-switch > span { width: 100%; }
  .reading-script-switch button { flex: 1; padding: 8px; }
}
/* V15.4: bilingual instructions and readable single-syllable candidates. */
.ui-en { display:block; margin-top:.25rem; font-family:inherit; font-size:max(12px,.78em); font-weight:400; line-height:1.45; letter-spacing:normal; }
.single-character-results { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px; margin:24px 0; }
.single-character-card { display:flex; flex-direction:column; align-items:stretch; min-width:0; padding:18px; border:1px solid var(--color-border); border-radius:16px; background:var(--color-surface); color:inherit; text-align:left; cursor:pointer; overflow-wrap:anywhere; }
.single-character-card:hover { border-color:var(--color-primary); }
.single-character-card:focus-visible { outline:3px solid #2272ad; outline-offset:3px; }
.single-character-heading { display:flex; align-items:center; gap:18px; }
.single-character-heading strong { font-size:52px; line-height:1.25; }
.single-character-heading > span { font-size:24px; }
.single-character-heading small { display:block; font-size:14px; }
.single-character-meaning { display:block; margin-top:12px; font-size:17px; line-height:1.6; }
.single-character-card .english-reference { margin-top:10px; font-size:14px; }
.english-reference[hidden] { display:none!important; }
@media(max-width:560px) { .single-character-results { grid-template-columns:1fr; } .single-character-card { padding:16px; } }