:root {
  --bg: #f7f8fb;
  --surface: #ffffff;
  --surface-strong: #f0f4f8;
  --ink: #18212f;
  --muted: #64748b;
  --line: #d9e2ec;
  --teal: #0f9f8f;
  --teal-dark: #08776d;
  --blue: #2563eb;
  --orange: #d97706;
  --red: #dc2626;
  --green: #16a34a;
  --violet: #7c3aed;
  --shadow: 0 16px 40px rgba(15, 23, 42, 0.08);
  --radius: 8px;
  --radius-sm: 6px;
  font-family: Inter, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  background: linear-gradient(180deg, #ffffff 0%, var(--bg) 280px);
}

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

button {
  border: 0;
}

button:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid rgba(15, 159, 143, 0.28);
  outline-offset: 2px;
}

textarea {
  resize: vertical;
}

.app-shell {
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(210px, 1fr) auto;
  gap: 20px;
  align-items: center;
  padding: 18px clamp(16px, 3vw, 36px);
  border-bottom: 1px solid rgba(217, 226, 236, 0.86);
  background: rgba(247, 248, 251, 0.9);
  backdrop-filter: blur(16px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  border-radius: 8px;
  color: #ffffff;
  background: #172033;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-title {
  margin: 0;
  font-size: clamp(18px, 2.4vw, 24px);
  line-height: 1.1;
}

.brand-subtitle {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.top-actions {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.stat-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 36px;
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  color: var(--muted);
  font-size: 13px;
  white-space: nowrap;
}

.stat-pill strong {
  color: var(--ink);
}

.main-nav {
  display: flex;
  gap: 8px;
  padding: 12px clamp(16px, 3vw, 36px) 0;
  overflow-x: auto;
}

.nav-button,
.segmented button,
.ghost-button,
.primary-button,
.danger-button,
.tool-button,
.small-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 38px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.nav-button {
  padding: 8px 13px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  white-space: nowrap;
}

.nav-button:hover,
.nav-button.active {
  border-color: var(--line);
  background: var(--surface);
  color: var(--ink);
}

.content {
  padding: 18px clamp(16px, 3vw, 36px) 34px;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(230px, 300px) minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.panel,
.practice-board,
.feedback-board,
.bank-list,
.history-list,
.full-run-board {
  border: 1px solid rgba(217, 226, 236, 0.9);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow);
}

.panel {
  padding: 18px;
}

.panel h2,
.practice-board h2,
.feedback-board h2,
.full-run-board h2 {
  margin: 0;
  font-size: 18px;
  letter-spacing: 0;
}

.panel p,
.muted {
  color: var(--muted);
}

.compact-copy {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.65;
}

.segmented {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  padding: 5px;
  margin: 16px 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-strong);
}

.segmented button {
  min-height: 42px;
  padding: 8px 10px;
  background: transparent;
  color: var(--muted);
  white-space: normal;
}

.segmented button.active {
  background: #ffffff;
  color: var(--ink);
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.08);
}

.mini-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 16px;
}

.mini-stat {
  min-height: 82px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #ffffff;
}

.mini-stat span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.mini-stat strong {
  display: block;
  margin-top: 6px;
  font-size: 24px;
}

.starter-panel h2 {
  margin-top: 10px;
}

.starter-step-list {
  display: grid;
  gap: 10px;
  margin: 16px 0;
}

.starter-step {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 10px;
  align-items: center;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #ffffff;
}

.starter-step > span {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: #e8f7f5;
  color: var(--teal-dark);
  font-weight: 800;
}

.starter-step strong,
.starter-step small {
  display: block;
}

.starter-step small {
  margin-top: 2px;
  color: var(--muted);
}

.starter-step.active {
  border-color: rgba(29, 78, 216, 0.32);
  background: #f8fbff;
}

.starter-step.active > span {
  background: #1d4ed8;
  color: #ffffff;
}

.starter-step.done > span {
  background: var(--teal);
  color: #ffffff;
}

.practice-board {
  min-width: 0;
  padding: clamp(18px, 2.5vw, 26px);
}

.practice-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 4px 9px;
  border-radius: 999px;
  background: #e8f7f5;
  color: var(--teal-dark);
  font-size: 12px;
  font-weight: 700;
}

.badge.blue {
  background: #e8eefc;
  color: #1d4ed8;
}

.badge.orange {
  background: #fff2db;
  color: #a05700;
}

.badge.violet {
  background: #f0e9ff;
  color: #6d28d9;
}

.badge.green {
  background: #dcfce7;
  color: #15803d;
}

.question-text {
  margin: 0;
  max-width: 880px;
  font-size: clamp(26px, 4vw, 46px);
  line-height: 1.15;
  letter-spacing: 0;
}

.sentence-text {
  font-size: clamp(24px, 3.4vw, 38px);
}

.blurred {
  filter: blur(8px);
  user-select: none;
}

.prompt-note {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.starter-question {
  font-size: clamp(24px, 3.5vw, 40px);
}

.starter-mission {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(240px, 0.9fr);
  gap: 14px;
  margin: 18px 0 0;
  padding: 16px;
  border: 1px solid rgba(15, 159, 143, 0.22);
  border-left: 4px solid var(--teal);
  border-radius: var(--radius);
  background: #f8fffd;
}

.starter-mission h3 {
  margin: 10px 0 8px;
  font-size: 18px;
}

.starter-mission p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.starter-template {
  display: grid;
  align-content: center;
  gap: 8px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #ffffff;
}

.starter-template span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.starter-template strong {
  line-height: 1.45;
}

.starter-scaffold {
  margin-top: 14px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
}

.starter-scaffold-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 10px;
}

.starter-scaffold-item {
  display: grid;
  gap: 7px;
  min-height: 104px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fbfdff;
}

.starter-scaffold-item > span {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #e8eefc;
  color: #1d4ed8;
  font-weight: 800;
}

.starter-scaffold-item strong {
  line-height: 1.35;
}

.starter-scaffold-item small {
  color: var(--muted);
  line-height: 1.4;
}

.starter-scaffold.choice-only .starter-scaffold-grid,
.starter-scaffold.target-words .starter-scaffold-grid {
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
}

.starter-scaffold.choice-only .starter-scaffold-item,
.starter-scaffold.target-words .starter-scaffold-item {
  min-height: 84px;
}

.starter-scaffold.example-card {
  border-left: 4px solid var(--orange);
}

.starter-scaffold.full-task {
  border-left: 4px solid var(--blue);
}

.question-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.control-band {
  display: grid;
  grid-template-columns: minmax(180px, 240px) minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  margin: 22px 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfdff;
}

.record-control {
  display: grid;
  place-items: center;
  gap: 12px;
}

.record-button {
  display: grid;
  place-items: center;
  width: 132px;
  height: 132px;
  border-radius: 50%;
  color: #ffffff;
  background: var(--teal);
  box-shadow: 0 18px 30px rgba(15, 159, 143, 0.26);
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.record-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 22px 34px rgba(15, 159, 143, 0.3);
}

.record-button.recording {
  background: var(--red);
  box-shadow: 0 18px 30px rgba(220, 38, 38, 0.22);
}

.record-dot {
  display: block;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: #ffffff;
}

.record-button.recording .record-dot {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

.timer {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 104px;
  padding: 7px 10px;
  border-radius: 999px;
  background: #eff6ff;
  color: #1d4ed8;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.control-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.primary-button {
  padding: 10px 15px;
  background: var(--ink);
  color: #ffffff;
  font-weight: 700;
}

.primary-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 18px rgba(15, 23, 42, 0.16);
}

.ghost-button,
.tool-button,
.small-button {
  padding: 9px 12px;
  border: 1px solid var(--line);
  background: #ffffff;
  color: var(--ink);
}

.ghost-button:hover,
.tool-button:hover,
.small-button:hover {
  background: var(--surface-strong);
}

.danger-button {
  padding: 9px 12px;
  border: 1px solid #fecaca;
  background: #fff5f5;
  color: #b91c1c;
}

.button-icon {
  display: inline-grid;
  place-items: center;
  width: 18px;
  height: 18px;
  font-size: 15px;
  line-height: 1;
}

.status-line {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  color: var(--muted);
  font-size: 14px;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--muted);
}

.status-dot.ready {
  background: var(--blue);
}

.status-dot.recording {
  background: var(--red);
  box-shadow: 0 0 0 7px rgba(220, 38, 38, 0.1);
}

.status-dot.done {
  background: var(--green);
}

.transcript-area {
  display: grid;
  gap: 8px;
  margin-top: 16px;
}

.transcript-area label {
  font-weight: 800;
}

.transcript-area textarea {
  width: 100%;
  min-height: 118px;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--ink);
  background: #ffffff;
  line-height: 1.55;
}

.feedback-board {
  margin-top: 16px;
  padding: clamp(16px, 2.2vw, 22px);
}

.starter-feedback {
  border-left: 4px solid var(--blue);
}

.starter-result {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfdff;
}

.starter-result h2 {
  margin-top: 10px;
}

.starter-result.pass {
  border-color: rgba(15, 159, 143, 0.28);
  background: #f4fffc;
}

.starter-result.almost {
  border-color: rgba(245, 158, 11, 0.3);
  background: #fffbeb;
}

.starter-result.retry {
  border-color: rgba(220, 38, 38, 0.24);
  background: #fff7f7;
}

.starter-score {
  display: flex;
  align-items: baseline;
  gap: 4px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background: #ffffff;
}

.starter-score strong {
  font-size: 36px;
}

.starter-check-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 14px;
}

.starter-check {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 10px;
  min-height: 108px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #ffffff;
}

.starter-check > span {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #eef2f7;
  color: var(--muted);
  font-weight: 800;
}

.starter-check.passed > span {
  background: #dcfce7;
  color: #15803d;
}

.starter-check strong {
  display: block;
}

.starter-check p {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.mistake-book {
  display: grid;
  gap: 16px;
}

.notebook-summary {
  border-left: 4px solid var(--teal);
}

.mistake-mode-toggle {
  max-width: 420px;
}

.word-mistake-filter {
  max-width: 760px;
}

.mistake-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.mistake-card {
  display: grid;
  gap: 14px;
  padding: 16px;
  border: 1px solid rgba(217, 226, 236, 0.9);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow);
}

.mistake-card-head {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: flex-start;
}

.mistake-card-head h3 {
  margin: 10px 0 0;
  font-size: 30px;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.mistake-card-head > strong {
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  background: #eff6ff;
  color: #1d4ed8;
}

.word-chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.word-chip-list span {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  padding: 7px 10px;
  border-radius: 999px;
  background: #f1f5f9;
  color: var(--ink);
  font-weight: 700;
}

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

.word-mistake-card .mistake-card-head h3 {
  font-size: 24px;
  line-height: 1.15;
}

.word-diagnosis {
  display: grid;
  gap: 5px;
  padding: 12px;
  border-radius: var(--radius-sm);
  background: #f8fafc;
  border-left: 4px solid #94a3b8;
}

.word-diagnosis strong {
  color: var(--ink);
  font-size: 14px;
}

.word-diagnosis p {
  margin: 0;
  color: var(--muted);
  line-height: 1.45;
}

.word-diagnosis.pronunciationLikely {
  background: #eff6ff;
  border-left-color: #2563eb;
}

.word-diagnosis.recallLikely {
  background: #fff7ed;
  border-left-color: #d97706;
}

.word-diagnosis.semanticSubstitution {
  background: #f0fdf4;
  border-left-color: #16a34a;
}

.word-breakdown {
  display: grid;
  gap: 8px;
  padding: 12px;
  border: 1px solid rgba(217, 226, 236, 0.9);
  border-radius: var(--radius-sm);
  background: #f8fafc;
}

.word-breakdown > span,
.heard-as-list > span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.breakdown-parts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.breakdown-parts b {
  padding: 6px 9px;
  border-radius: 999px;
  background: #ffffff;
  border: 1px solid var(--line);
  color: var(--ink);
  font-size: 14px;
  letter-spacing: 0;
}

.word-breakdown small {
  color: var(--muted);
  line-height: 1.45;
}

.word-mistake-tags,
.heard-as-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.word-mistake-tags span,
.heard-as-list strong {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  padding: 7px 10px;
  border-radius: 999px;
  background: #eef2ff;
  color: #3730a3;
  font-size: 12px;
  font-weight: 800;
}

.heard-as-list strong {
  background: #fff7ed;
  color: #9a3412;
}

.heard-as-list small {
  color: inherit;
  opacity: 0.75;
}

.notebook-drill {
  padding: 12px;
  border-left: 4px solid var(--orange);
  border-radius: var(--radius-sm);
  background: #fffbeb;
}

.notebook-drill span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.notebook-drill p {
  margin: 6px 0 0;
  line-height: 1.5;
  font-weight: 700;
}

.recent-source-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.source-pill {
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #ffffff;
  color: var(--muted);
  font-size: 12px;
}

.source-pill:hover {
  color: var(--ink);
  background: var(--surface-strong);
}

.word-action-row {
  align-items: stretch;
}

.mistake-review-entry,
.mistake-review-deck {
  display: grid;
  gap: 16px;
  padding: 18px;
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: var(--radius);
  background: #ffffff;
}

.mistake-review-entry {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  border-left: 4px solid var(--blue);
}

.mistake-review-entry h3,
.mistake-review-deck h3 {
  margin: 8px 0 4px;
  font-size: 24px;
  letter-spacing: 0;
}

.deck-topline {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
}

.deck-progress {
  display: grid;
  gap: 4px;
  min-width: 104px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: #eff6ff;
  color: #1d4ed8;
  text-align: right;
}

.deck-progress strong {
  font-size: 22px;
  line-height: 1;
}

.deck-progress span {
  color: inherit;
  font-size: 12px;
  font-weight: 800;
}

.deck-card-shell {
  display: grid;
  gap: 10px;
  touch-action: pan-y;
}

.deck-card-meta,
.deck-weak-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.deck-card-meta span,
.deck-weak-list span {
  padding: 7px 10px;
  border-radius: 999px;
  background: #f1f5f9;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.deck-action-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
  align-items: center;
}

.deck-action-bar .tool-button.active {
  border-color: rgba(217, 119, 6, 0.35);
  background: #fffbeb;
  color: #92400e;
}

.mistake-review-deck.summary {
  border-left: 4px solid var(--teal);
}

.word-drill-capsule {
  display: grid;
  gap: 16px;
  padding: 18px;
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-left: 4px solid var(--blue);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(239, 246, 255, 0.92), rgba(255, 255, 255, 0.96));
}

.word-drill-capsule h3 {
  margin: 8px 0 4px;
  font-size: 28px;
  letter-spacing: 0;
}

.word-drill-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.word-drill-step {
  display: grid;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #ffffff;
}

.word-drill-step.result-pass {
  border-color: rgba(22, 163, 74, 0.32);
}

.word-drill-step.result-almost {
  border-color: rgba(217, 119, 6, 0.34);
}

.word-drill-step.result-retry {
  border-color: rgba(220, 38, 38, 0.28);
}

.word-drill-step-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}

.word-drill-step-head span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.word-drill-step-head strong {
  font-size: 14px;
}

.word-drill-target {
  display: grid;
  gap: 6px;
  padding: 16px;
  border-radius: var(--radius-sm);
  background: #f8fafc;
  text-align: center;
}

.word-drill-target b {
  font-size: 30px;
  letter-spacing: 0;
}

.word-drill-target small {
  color: var(--muted);
  font-weight: 800;
}

.sentence-target {
  min-height: 104px;
}

.word-drill-feedback {
  display: grid;
  gap: 6px;
  padding: 12px;
  border-radius: var(--radius-sm);
  background: #f8fafc;
  color: var(--muted);
  line-height: 1.45;
}

.word-drill-feedback strong {
  color: var(--ink);
}

.word-drill-feedback p {
  margin: 0;
}

.word-drill-feedback span {
  font-size: 12px;
  font-weight: 800;
}

.word-drill-feedback.result-pass {
  background: #f0fdf4;
  color: #166534;
}

.word-drill-feedback.result-almost {
  background: #fffbeb;
  color: #92400e;
}

.word-drill-feedback.result-retry {
  background: #fef2f2;
  color: #991b1b;
}

.word-drill-feedback.muted {
  color: var(--muted);
}

.empty-feedback {
  display: grid;
  place-items: center;
  min-height: 180px;
  border: 1px dashed #cbd5e1;
  border-radius: var(--radius);
  color: var(--muted);
  text-align: center;
}

.feedback-grid {
  display: grid;
  grid-template-columns: minmax(180px, 230px) minmax(0, 1fr);
  gap: 18px;
  margin-top: 16px;
}

.score-box {
  display: grid;
  align-content: start;
  gap: 14px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfdff;
}

.score-number {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-size: 48px;
  line-height: 1;
  font-weight: 900;
}

.score-number span {
  color: var(--muted);
  font-size: 18px;
  font-weight: 700;
}

.meter {
  height: 10px;
  border-radius: 999px;
  overflow: hidden;
  background: #e5edf5;
}

.meter-fill {
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--orange), var(--teal));
}

.metric-list {
  display: grid;
  gap: 8px;
}

.metric-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
  color: var(--muted);
  font-size: 13px;
}

.metric-row strong {
  color: var(--ink);
}

.feedback-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.feedback-section {
  min-width: 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
}

.feedback-section h3 {
  margin: 0 0 10px;
  font-size: 15px;
}

.subsection-title {
  margin: 14px 0 8px;
  font-size: 13px;
}

.feedback-section ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.5;
}

.wide-section {
  grid-column: 1 / -1;
}

.section-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.section-title-row h3,
.section-title-row h4 {
  margin: 0;
}

.coach-entry {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  margin-top: 18px;
  padding: 16px;
  border: 1px solid rgba(124, 58, 237, 0.22);
  border-left: 4px solid var(--violet);
  border-radius: var(--radius);
  background: #fbfaff;
}

.coach-entry h3 {
  margin: 8px 0 6px;
  font-size: 17px;
}

.coach-capsule {
  display: grid;
  gap: 14px;
  margin-top: 18px;
  padding: clamp(14px, 2vw, 18px);
  border: 1px solid rgba(124, 58, 237, 0.24);
  border-left: 4px solid var(--violet);
  border-radius: var(--radius);
  background: linear-gradient(180deg, #fbfaff 0%, #ffffff 68%);
}

.coach-stepper {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.coach-step {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  min-height: 38px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--muted);
  background: #ffffff;
  font-size: 13px;
  font-weight: 700;
}

.coach-step span {
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
  border-radius: 999px;
  background: #e5edf5;
  color: var(--ink);
  font-size: 12px;
}

.coach-step.active {
  border-color: rgba(124, 58, 237, 0.36);
  color: var(--ink);
  background: #f5f3ff;
}

.coach-step.done {
  border-color: rgba(15, 159, 143, 0.28);
  color: var(--teal-dark);
  background: #ecfdf5;
}

.coach-card {
  min-width: 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
}

.coach-card h4 {
  margin: 14px 0 8px;
  font-size: 13px;
}

.coach-alert {
  padding: 10px 12px;
  border: 1px solid #fed7aa;
  border-radius: var(--radius-sm);
  color: #9a3412;
  background: #fff7ed;
  font-size: 13px;
}

.coach-evidence {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.55;
}

.coach-mission {
  margin-top: 12px;
  padding: 13px 14px;
  border-left: 4px solid var(--teal);
  border-radius: var(--radius-sm);
  background: #f8fafc;
}

.coach-mission strong {
  display: block;
  margin-bottom: 6px;
}

.coach-mission p {
  margin: 0 0 8px;
  color: var(--ink);
  line-height: 1.55;
}

.coach-mission ul {
  display: grid;
  gap: 6px;
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.compact-recorder {
  grid-template-columns: auto auto minmax(0, 1fr);
  align-items: center;
}

.compact-recorder .record-button {
  width: 118px;
  height: 118px;
}

.record-button:disabled,
.primary-button:disabled,
.ghost-button:disabled,
.small-button:disabled {
  cursor: not-allowed;
  opacity: 0.56;
  transform: none;
  box-shadow: none;
}

.transcript-box {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.transcript-box span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.transcript-box textarea {
  width: 100%;
  min-height: 112px;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--ink);
  background: #ffffff;
  line-height: 1.55;
}

.coach-before-after {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 12px;
}

.coach-before-after > div {
  min-width: 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fbfdff;
}

.coach-before-after p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.coach-profile-summary {
  border-left: 4px solid var(--teal);
}

.coach-profile-chip {
  display: grid;
  justify-items: end;
  gap: 4px;
  min-width: 150px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #ffffff;
}

.coach-profile-chip span {
  color: var(--muted);
  font-size: 12px;
}

.coach-profile-chip strong {
  font-size: 16px;
}

.coach-inline-actions {
  margin-top: 12px;
}

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

.setup-basic {
  border-left: 4px solid var(--teal);
}

.confidence-section {
  margin-top: 14px;
  border-left: 4px solid var(--blue);
}

.confidence-meter {
  height: 8px;
  margin: 6px 0 10px;
  overflow: hidden;
  border-radius: 999px;
  background: #e5edf5;
}

.confidence-meter > div {
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--orange), var(--blue));
}

.confidence-reasons {
  display: grid;
  gap: 7px;
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.5;
}

.data-panel {
  margin-bottom: 14px;
  border-left: 4px solid var(--teal);
}

.compact-summary {
  margin-top: 10px;
}

.compact-summary .summary-tile {
  min-height: 82px;
}

.diff-line {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  line-height: 1.9;
}

.word-token {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 2px 7px;
  border-radius: 6px;
  border: 1px solid transparent;
  font-size: 14px;
}

.word-token.match {
  background: #ecfdf5;
  color: #166534;
}

.word-token.substitute {
  background: #fff7ed;
  color: #9a3412;
  border-color: #fed7aa;
}

.word-token.missing {
  background: #fef2f2;
  color: #b91c1c;
  border-color: #fecaca;
  text-decoration: line-through;
}

.word-token.extra {
  background: #eff6ff;
  color: #1d4ed8;
  border-color: #bfdbfe;
}

.upgrade-answer {
  margin: 0;
  color: var(--ink);
  line-height: 1.7;
}

.score-breakdown {
  display: grid;
  gap: 12px;
}

.breakdown-row {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) minmax(120px, 220px) 46px;
  gap: 12px;
  align-items: center;
}

.breakdown-row strong {
  display: block;
  font-size: 14px;
}

.breakdown-row span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.breakdown-row b {
  text-align: right;
  font-size: 13px;
}

.breakdown-meter {
  height: 10px;
  border-radius: 999px;
  overflow: hidden;
  background: #e5edf5;
}

.breakdown-meter div {
  height: 100%;
  border-radius: inherit;
  background: var(--teal);
}

.pron-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(120px, 1fr));
  gap: 10px;
}

.pron-tile {
  min-height: 72px;
  padding: 11px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fbfdff;
}

.pron-tile span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.pron-tile strong {
  display: block;
  margin-top: 8px;
  font-size: 18px;
}

.pron-notes {
  display: grid;
  gap: 8px;
  margin: 12px 0 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.5;
}

.rubric-grid,
.comparison-grid,
.weakness-grid,
.phoneme-list {
  display: grid;
  gap: 10px;
}

.rubric-grid,
.weakness-grid,
.phoneme-list {
  grid-template-columns: repeat(4, minmax(120px, 1fr));
}

.comparison-grid {
  grid-template-columns: 150px minmax(0, 1fr);
  align-items: start;
}

.rubric-tile,
.weakness-tile,
.phoneme-card {
  min-height: 86px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fbfdff;
}

.rubric-tile span,
.weakness-tile span,
.phoneme-card span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.rubric-tile strong,
.weakness-tile strong,
.phoneme-card strong {
  display: block;
  margin-top: 6px;
  font-size: 20px;
}

.rubric-tile p,
.phoneme-card p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.phoneme-card small {
  display: block;
  margin-top: 8px;
  color: var(--ink);
  line-height: 1.45;
}

.comparison-score {
  min-height: 104px;
  padding: 14px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #ffffff;
}

.comparison-score span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.comparison-score strong {
  display: block;
  margin-top: 8px;
  font-size: 34px;
}

.comparison-score.up strong {
  color: var(--green);
}

.comparison-score.down strong {
  color: var(--red);
}

.weakness-panel {
  margin-bottom: 14px;
}

.full-run-board {
  padding: clamp(18px, 2.5vw, 26px);
}

.ladder-board {
  display: grid;
  gap: 16px;
}

.ladder-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 150px;
  gap: 16px;
  align-items: stretch;
  padding: clamp(18px, 2.5vw, 26px);
  border: 1px solid rgba(217, 226, 236, 0.9);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow);
}

.ladder-hero h2 {
  margin: 0;
  font-size: clamp(26px, 4vw, 42px);
  line-height: 1.08;
}

.ladder-hero p {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.ladder-score {
  display: grid;
  align-content: center;
  min-height: 120px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfdff;
}

.ladder-score span,
.ladder-progress span {
  color: var(--muted);
  font-size: 13px;
}

.ladder-score strong {
  display: block;
  margin-top: 8px;
  font-size: 38px;
}

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

.ladder-progress {
  display: grid;
  gap: 8px;
  margin-top: 14px;
}

.ladder-plan {
  display: grid;
  gap: 10px;
}

.ladder-task {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
}

.ladder-task.done {
  background: #f8fafc;
}

.setup-board {
  display: grid;
  gap: 16px;
}

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

.setup-field,
.check-row {
  display: grid;
  gap: 7px;
  margin-top: 12px;
}

.check-row {
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
}

.setup-field span,
.check-row span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.setup-field input,
.setup-field select {
  width: 100%;
  min-height: 40px;
  padding: 9px 11px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #ffffff;
  color: var(--ink);
}

.setup-note {
  box-shadow: none;
}

.external-grid {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.external-pron {
  margin-top: 12px;
}

.external-copy {
  min-width: 0;
}

.full-setup {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: end;
}

.progress-track {
  height: 10px;
  border-radius: 999px;
  overflow: hidden;
  background: #e5edf5;
}

.progress-fill {
  height: 100%;
  background: var(--teal);
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(120px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.summary-tile {
  min-height: 100px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
}

.summary-tile span {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.summary-tile strong {
  display: block;
  margin-top: 8px;
  font-size: 28px;
}

.filters {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.filters select {
  min-height: 38px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #ffffff;
  color: var(--ink);
}

.bank-list,
.history-list {
  display: grid;
  gap: 0;
  overflow: hidden;
}

.bank-item,
.history-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.9);
}

.bank-item:last-child,
.history-item:last-child {
  border-bottom: 0;
}

.item-title {
  margin: 0;
  font-weight: 850;
  line-height: 1.45;
}

.item-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 8px;
}

.history-top {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  margin-bottom: 14px;
}

.audio-player {
  width: min(100%, 360px);
  margin-top: 12px;
}

.toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 50;
  max-width: min(420px, calc(100vw - 36px));
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  background: #ffffff;
  box-shadow: var(--shadow);
}

.hidden {
  display: none !important;
}

@media (max-width: 980px) {
  .workspace,
  .control-band,
  .feedback-grid,
  .starter-mission,
  .full-setup,
  .ladder-hero,
  .ladder-grid,
  .coach-entry,
  .coach-before-after {
    grid-template-columns: 1fr;
  }

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

  .question-actions {
    justify-content: flex-start;
  }

  .summary-grid {
    grid-template-columns: repeat(2, minmax(120px, 1fr));
  }

  .starter-check-grid {
    grid-template-columns: 1fr;
  }

  .starter-scaffold-grid {
    grid-template-columns: 1fr;
  }

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

  .mistake-review-entry,
  .deck-topline {
    grid-template-columns: 1fr;
    flex-direction: column;
  }

  .deck-progress {
    width: 100%;
    text-align: left;
  }

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

@media (max-width: 720px) {
  .topbar {
    grid-template-columns: 1fr;
  }

  .top-actions {
    justify-content: flex-start;
  }

  .main-nav {
    padding-top: 10px;
  }

  .practice-header,
  .starter-result,
  .history-top,
  .bank-item,
  .history-item,
  .ladder-task,
  .compact-recorder {
    grid-template-columns: 1fr;
  }

  .coach-stepper {
    grid-template-columns: 1fr;
  }

  .coach-entry,
  .history-actions,
  .coach-profile-chip {
    justify-items: stretch;
  }

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

  .breakdown-row,
  .pron-grid,
  .rubric-grid,
  .comparison-grid,
  .weakness-grid,
  .phoneme-list,
  .setup-grid,
  .external-grid {
    grid-template-columns: 1fr;
  }

  .summary-grid,
  .mini-stats {
    grid-template-columns: 1fr;
  }

  .record-button {
    width: 118px;
    height: 118px;
  }
}