:root {
  --bg: #fff8fa;
  --panel: #ffffff;
  --ink: #2d2630;
  --muted: #786d78;
  --line: #eadde4;
  --pink: #f28aae;
  --pink-strong: #e65f8d;
  --peach: #ffd7c9;
  --violet: #bca8f2;
  --mint: #9edfc8;
  --blue: #a7d8f4;
  --warn: #f1a35c;
  --danger: #e86d78;
  --shadow: 0 18px 40px rgba(125, 79, 104, 0.12);
}

* {
  box-sizing: border-box;
  scrollbar-color: transparent transparent;
  scrollbar-width: thin;
}

*::-webkit-scrollbar { width: 6px; height: 6px; }
*::-webkit-scrollbar-track, *::-webkit-scrollbar-thumb { background: transparent; }
.visually-hidden { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip: rect(0, 0, 0, 0) !important; white-space: nowrap !important; border: 0 !important; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
}
.login-screen { position: fixed; inset: 0; z-index: 9999; display: grid; place-items: center; padding: 24px; background: radial-gradient(circle at 20% 20%, #ffe5ef, transparent 38%), linear-gradient(145deg, #fff8fa, #f6f0ff); }
.login-screen[hidden] { display: none; }
.login-card { width: min(440px, 100%); padding: 34px; border: 1px solid var(--line); border-radius: 20px; background: rgba(255,255,255,.96); box-shadow: var(--shadow); }
.login-brand { display: flex; align-items: center; gap: 14px; margin-bottom: 26px; }
.login-brand h1, .login-brand p { margin: 0; }.login-brand p { margin-top: 4px; color: var(--muted); }
.login-card form, .login-card label { display: grid; gap: 8px; }.login-card form { gap: 16px; }.login-card input { width: 100%; padding: 12px; border: 1px solid var(--line); border-radius: 9px; }
.password-field { position: relative; }.password-field button { position: absolute; right: 8px; top: 7px; padding: 5px 8px; border: 0; color: var(--pink-strong); background: transparent; }
.captcha-field { display: grid; grid-template-columns: 1fr 140px; gap: 10px; }.captcha-field button { height: 44px; padding: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 9px; background: #fff1f6; }.captcha-field img { display: block; width: 100%; height: 100%; }
.login-card .remember-login { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 13px; }.login-card .remember-login input { width: auto; }
.remembered-login-note { color: #15803d; font-size: 12px; }
#login-status { min-height: 20px; margin: 0; color: var(--danger); font-size: 13px; }
.current-user { padding: 8px 10px; border: 0; border-radius: 8px; color: var(--muted); background: #fff8fb; font-size: 13px; white-space: nowrap; }
.password-dialog { background: rgb(45 38 48 / 38%); backdrop-filter: blur(3px); }.account-row { grid-template-columns: 1.1fr .55fr 1.25fr auto; }.account-row-actions { display: flex; gap: 6px; }.account-row-actions button { padding: 6px 8px; font-size: 12px; }.account-audit-head { margin-top: 28px; }
.role-permission-table-wrap { margin-top: 18px; overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; }
.role-permission-table { width: 100%; min-width: 620px; border-collapse: collapse; }.role-permission-table th, .role-permission-table td { padding: 13px; text-align: center; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }.role-permission-table th:first-child { text-align: left; }.role-permission-table thead th { background: #fff8fb; }.role-permission-table input { width: 18px; height: 18px; accent-color: var(--pink-strong); }
.role-permission-table .role-permission-group th { padding: 8px 12px; color: #2563eb; background: #eef6ff; font-size: 13px; text-align: left; }

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  display: flex;
  flex-direction: column;
  gap: 24px;
  height: 100vh;
  min-height: 0;
  padding: 24px;
  background: #fff;
  border-right: 1px solid var(--line);
  overflow: hidden;
}

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

.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  color: #fff;
  font-weight: 800;
  background: var(--pink-strong);
}

.brand h1 {
  margin: 0;
  font-size: 18px;
  white-space: nowrap;
}

.brand p,
.eyebrow {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.nav-list {
  display: grid;
  gap: 8px;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
  scrollbar-gutter: stable;
  overscroll-behavior: contain;
  padding-right: 4px;
}

.nav-section-label {
  margin: 8px 10px 0;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.nav-section-label.global-label {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.nav-item[hidden] { display: none; }

.nav-item {
  width: 100%;
  padding: 12px 14px;
  color: var(--muted);
  text-align: left;
  border: 0;
  border-radius: 8px;
  background: transparent;
}

.nav-item.active,
.nav-item:hover {
  color: var(--pink-strong);
  background: #fff0f5;
}

.library-chip {
  margin-top: auto;
  padding: 14px;
  border-radius: 8px;
  background: #f7f1ff;
}

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

.library-chip strong {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  font-weight: 400;
  line-height: 1.45;
  white-space: normal;
  overflow-wrap: anywhere;
}

.workspace {
  min-width: 0;
  padding: 28px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 34px;
  gap: 16px;
  margin-bottom: 14px;
  padding: 3px 0 5px;
  border-bottom: 1px solid var(--line);
  background: var(--bg);
  overflow-x: auto;
}

.topbar > div:first-child { flex: 0 0 auto; white-space: nowrap; }

.topbar h2 {
  margin: 0;
  font-size: 20px;
  line-height: 28px;
}

.top-actions {
  display: flex;
  flex: 1 1 auto;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  min-width: max-content;
}

.top-actions .subject-switcher {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.subject-switcher {
  display: flex;
  gap: 4px;
  padding: 2px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
}

.subject-switcher button {
  min-height: 26px;
  padding: 0 10px;
  color: var(--muted);
  border: 0;
  border-radius: 7px;
  background: transparent;
}

.subject-switcher button.active {
  color: #fff;
  background: var(--pink-strong);
}

.topbar .current-user {
  height: 28px;
  padding: 0 10px;
  font-size: 13px;
  line-height: 28px;
}

select,
input {
  height: 40px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.primary-action {
  display: inline-grid;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 16px;
  color: #fff;
  border: 0;
  border-radius: 8px;
  background: var(--pink-strong);
}

.primary-action:hover {
  background: #d84c7d;
}

.secondary-action {
  height: 38px;
  margin-top: 16px;
  padding: 0 14px;
  color: var(--pink-strong);
  border: 1px solid #edb8ca;
  border-radius: 8px;
  background: #fff;
}

.view {
  display: none;
}

.view.active {
  display: block;
}

.empty-state {
  padding: 16px;
  color: var(--muted);
  line-height: 1.7;
  border: 1px dashed var(--line);
  border-radius: 8px;
  background: #fff;
}

.table-empty {
  margin-top: 10px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 16px;
}

.stat-card,
.panel,
.exercise-card,
.library-grid article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.stat-card {
  padding: 18px;
  border-left: 5px solid var(--pink);
}

.stat-card.mint {
  border-left-color: var(--mint);
}

.stat-card.violet {
  border-left-color: var(--violet);
}

.stat-card.blue { border-left-color: var(--blue); }
.stat-card.peach { border-left-color: var(--peach); }
.stat-card.cost { border-left-color: var(--warn); }

.stat-card span,
.library-grid span,
.level {
  color: var(--muted);
  font-size: 13px;
}

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

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

.dashboard-grid,
.split-layout,
.practice-grid,
.model-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  gap: 16px;
}

.panel {
  padding: 20px;
}

.panel h3 {
  margin: 0 0 16px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-width: 0;
  min-height: 34px;
  gap: 16px;
  margin-bottom: 16px;
}

.panel-head h3 {
  margin: 0;
  font-size: 16px;
  line-height: 22px;
}

.panel-head > div:first-child { min-width: 0; }
.panel-head .section-note { max-width: 100%; margin-top: 3px; line-height: 18px; }
.panel-head > button,
.panel-head > .primary-action,
.panel-head > .secondary-action,
.panel-head > .text-button,
.panel-head > .status-badge {
  flex: 0 0 auto;
  width: auto;
  min-height: 32px;
  height: 32px;
  margin: 0;
  padding: 0 12px;
  border-radius: 7px;
  font-size: 13px;
  line-height: 1;
  white-space: nowrap;
}
.panel-head > .text-button { padding: 0 6px; }
.panel-head > .status-badge { display: inline-flex; align-items: center; }

.text-button {
  color: var(--pink-strong);
  border: 0;
  background: transparent;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.tag-list span {
  padding: 8px 10px;
  border-radius: 8px;
  background: #fff2f6;
}

.progress-list {
  display: grid;
  gap: 12px;
}

.progress-list div {
  display: grid;
  grid-template-columns: 100px 1fr;
  align-items: center;
  gap: 12px;
}

meter {
  width: 100%;
  height: 12px;
}

.task-list {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.9;
}

.upload-box {
  display: grid;
  place-items: center;
  min-height: 280px;
  padding: 24px;
  text-align: center;
  border: 1px dashed #e6b7c8;
  border-radius: 8px;
  background: #fff5f8;
}

.file-trigger input {
  display: none;
}

.photo-preview {
  display: grid;
  place-items: center;
  min-height: 150px;
  margin-bottom: 14px;
  overflow: hidden;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.annotated-photo {
  position: relative;
  display: inline-block;
  max-width: 100%;
  line-height: 0;
}

.photo-preview img {
  display: block;
  max-width: 100%;
  max-height: 360px;
  object-fit: contain;
}

.photo-annotation-layer {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: block;
  pointer-events: none;
}

.photo-annotation-mark {
  position: absolute;
  z-index: 4;
  display: block;
  opacity: 0.96;
  transform: translate(-50%, -50%);
}

.photo-annotation-mark.correct {
  width: clamp(24px, 6.5%, 46px) !important;
  height: clamp(18px, 4.8%, 34px) !important;
}

.photo-annotation-mark.correct::before {
  content: "";
  position: absolute;
  left: 18%;
  top: 4%;
  width: 64%;
  height: 58%;
  transform: rotate(-45deg);
  border-bottom: 1.4px solid #0f8d4f;
  border-left: 1.4px solid #0f8d4f;
  border-bottom-left-radius: 12px;
  filter: drop-shadow(0 0 1px rgba(255, 255, 255, 0.9));
}

.photo-annotation-mark.correct::after {
  content: none;
}

.photo-annotation-mark.incorrect {
  border: 0;
  background: transparent;
  width: clamp(18px, 4.2%, 34px) !important;
  height: clamp(18px, 4.2%, 34px) !important;
}

.photo-annotation-mark.incorrect::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 100%;
  height: 1.4px;
  transform: translate(-50%, -50%) rotate(45deg);
  transform-origin: center;
  border-radius: 999px;
  background: #dc2d3c;
  box-shadow: 0 0 1px rgba(255, 255, 255, 0.9);
}

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

.review-item {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.review-item.correct {
  border-color: rgba(89, 176, 139, 0.42);
  background: #f4fcf8;
}

.review-item.incorrect {
  border-color: rgba(232, 109, 120, 0.45);
  background: #fff6f6;
}

.review-mark {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  color: #fff;
  font-weight: 800;
  background: var(--danger);
}

.review-item.correct .review-mark {
  background: #59b08b;
}

.review-item-head {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  margin-bottom: 6px;
}

.review-item p {
  margin: 4px 0;
}

.review-item small {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  line-height: 1.6;
}

.ocr-source {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfafb;
}

.ocr-source strong {
  display: block;
  margin-bottom: 6px;
}

.ocr-source p {
  max-height: 120px;
  margin: 0;
  overflow: auto;
  color: var(--muted);
  line-height: 1.6;
}

.wrong-question-list {
  display: grid;
  gap: 10px;
  margin: 14px 0;
}

.wrong-question-list h4 {
  margin: 0;
  font-size: 15px;
}

.wrong-question-card {
  padding: 12px;
  border-left: 4px solid var(--danger);
  border-radius: 8px;
  background: #fff6f6;
}

.wrong-question-card p {
  margin: 6px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.photo-learning-panel {
  margin: 12px 0;
}

.photo-learning-card {
  display: grid;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fbff;
}

.photo-learning-card strong {
  display: block;
  font-size: 14px;
  color: var(--text);
}

.photo-learning-card p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.photo-feedback-text {
  width: 100%;
  min-height: 74px;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  color: var(--text);
  background: #fff;
  font: inherit;
  line-height: 1.5;
}

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

#photo-feedback-status {
  color: var(--muted);
  font-size: 13px;
}

.camera-icon {
  width: 72px;
  height: 52px;
  border: 4px solid var(--pink);
  border-radius: 8px;
  position: relative;
  margin-bottom: 12px;
}

.camera-icon::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 10px;
  width: 24px;
  height: 24px;
  border: 4px solid var(--violet);
  border-radius: 50%;
}

.capture-options {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-top: 16px;
  overflow-x: auto;
  white-space: nowrap;
}

.capture-options label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex: 0 0 auto;
}

.capture-options input {
  width: 16px;
  height: 16px;
  margin: 0;
}

.manual-correction {
  margin: 14px 0;
}

.manual-correction h4 {
  margin: 0 0 8px;
  font-size: 15px;
}

.manual-correction-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.manual-correction-table {
  width: 100%;
  min-width: max-content;
  border-collapse: collapse;
  text-align: center;
  background: #fff;
}

.manual-correction-table th,
.manual-correction-table td {
  min-width: 52px;
  height: 42px;
  padding: 6px 10px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.manual-correction-table tr:last-child > * { border-bottom: 0; }
.manual-correction-table tr > *:last-child { border-right: 0; }
.manual-correction-table thead th { background: #faf7f9; }
.manual-correction-table th:first-child { position: sticky; left: 0; z-index: 1; min-width: 64px; background: #faf7f9; }
.manual-correction-choice { width: 18px; height: 18px; margin: 0; vertical-align: middle; accent-color: var(--pink-strong); cursor: pointer; }
.manual-result-mark { display: inline-grid; place-items: center; min-width: 28px; height: 28px; padding: 0 6px; border-radius: 999px; color: #fff; font-size: 13px; }
.manual-result-mark.correct { background: #59b08b; }
.manual-result-mark.incorrect { background: var(--danger); }
}

.status-badge {
  padding: 6px 10px;
  border-radius: 8px;
  font-size: 13px;
}

.status-badge.warn {
  color: #7a4814;
  background: #fff0dd;
}

.question-preview,
.analysis-box,
.visual-aid,
.report-note,
.config-note,
.test-call-box {
  padding: 14px;
  border-radius: 8px;
  background: #fff7f2;
}

.analysis-box h4,
.report-note h4,
.test-call-box h4 {
  margin: 0 0 8px;
}

.model-form {
  display: grid;
  gap: 16px;
}

.model-form fieldset {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.model-form legend {
  padding: 0 6px;
  color: var(--pink-strong);
  font-weight: 700;
}

.model-form label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
}

.model-form input {
  width: 100%;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.model-status-list {
  display: grid;
  gap: 12px;
}

.model-status-list > div {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.model-status-list span {
  color: var(--muted);
  font-size: 13px;
}

.model-status-list strong {
  display: block;
  margin-top: 6px;
}

.model-usage-stats { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 12px; margin-bottom: 16px; }
.model-usage-stats .stat-card { min-width: 0; padding: 16px; }
.model-usage-stats .stat-card strong { overflow: hidden; font-size: 26px; text-overflow: ellipsis; white-space: nowrap; }
.model-usage-stats .stat-card p { margin: 5px 0 0; font-size: 12px; }
.model-usage-panel { margin-bottom: 16px; }
.panel-head-actions { display: flex; flex: 0 0 auto; gap: 8px; }
.model-budget-alerts { display: grid; gap: 8px; margin-bottom: 16px; }
.model-budget-alerts[hidden] { display: none; }
.budget-alert { display: flex; align-items: center; gap: 12px; padding: 11px 14px; border: 1px solid #fed7aa; border-radius: 9px; color: #8a5317; background: #fff7ed; font-size: 13px; }
.budget-alert.exceeded { color: #a51d2d; border-color: #fecdd3; background: #fff1f2; }
.budget-alert strong { white-space: nowrap; }
.model-budget-form { display: grid; grid-template-columns: repeat(5, minmax(150px, 1fr)); gap: 10px; }
.model-budget-form fieldset { display: grid; align-content: start; gap: 10px; min-width: 0; margin: 0; padding: 12px; border: 1px solid var(--line); border-radius: 9px; }
.model-budget-form legend { padding: 0 5px; color: var(--pink-strong); font-size: 12px; font-weight: 700; }
.model-budget-form label { display: grid; gap: 5px; color: var(--muted); font-size: 11px; }
.model-budget-form input { width: 100%; min-width: 0; padding: 8px 9px; border: 1px solid var(--line); border-radius: 7px; }
.model-budget-form label > span { color: var(--muted); font-size: 11px; }
.model-budget-actions { display: flex; align-items: end; }
.model-integration-list { display: grid; gap: 10px; }
.model-integration-item { position: relative; display: grid; grid-template-columns: minmax(220px, .9fr) minmax(520px, 2fr) auto; align-items: center; gap: 18px; padding: 14px 16px; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
.model-integration-item > div:first-child { min-width: 0; }
.model-integration-item > div:first-child strong { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.model-integration-item > div:first-child span { display: block; margin-top: 4px; color: var(--muted); font-size: 12px; }
.model-integration-item dl { display: grid; grid-template-columns: repeat(4, minmax(110px, 1fr)); gap: 14px; margin: 0; }
.model-integration-item dl div { min-width: 0; }
.model-integration-item dt { color: var(--muted); font-size: 11px; }
.model-integration-item dd { margin: 4px 0 0; overflow: hidden; font-size: 13px; text-overflow: ellipsis; white-space: nowrap; }
.usage-status { display: inline-flex; align-items: center; width: max-content; padding: 4px 8px; border-radius: 999px; color: #166534; background: #dcfce7; font-size: 12px; font-weight: 700; white-space: nowrap; }
.usage-status.failed, .usage-status.timeout { color: #b42318; background: #fff0f0; }
.usage-status.timeout { color: #8a5317; background: #fff3df; }
.model-usage-trend { display: flex; align-items: end; gap: 8px; min-height: 190px; padding: 14px 8px 0; overflow-x: auto; border-bottom: 1px solid var(--line); }
.model-usage-trend > .empty-state { width: 100%; align-self: center; }
.usage-trend-column { display: grid; flex: 1 0 34px; grid-template-rows: 120px auto auto; align-items: end; min-width: 34px; max-width: 72px; text-align: center; }
.usage-trend-column > div { display: flex; align-items: end; justify-content: center; height: 120px; }
.usage-trend-column i { display: block; width: min(26px, 70%); min-height: 4px; border-radius: 6px 6px 2px 2px; background: linear-gradient(180deg, var(--pink), var(--pink-strong)); }
.usage-trend-column strong { margin-top: 5px; font-size: 11px; }
.usage-trend-column span { padding: 4px 0 8px; color: var(--muted); font-size: 10px; white-space: nowrap; }
.model-usage-filter { display: grid; grid-template-columns: repeat(5, minmax(120px, 1fr)) auto; align-items: end; gap: 10px; margin-bottom: 14px; }
.model-usage-filter label { display: grid; gap: 5px; color: var(--muted); font-size: 12px; }
.model-usage-filter select { width: 100%; min-height: 38px; padding: 7px 30px 7px 9px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.model-usage-table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; }
.model-usage-table { width: 100%; min-width: 980px; border-collapse: collapse; font-size: 13px; }
.model-usage-table th, .model-usage-table td { padding: 11px 12px; text-align: left; vertical-align: middle; border-bottom: 1px solid var(--line); }
.model-usage-table th { color: var(--muted); background: #fff8fb; font-size: 12px; white-space: nowrap; }
.model-usage-table tr:last-child td { border-bottom: 0; }
.model-usage-table td strong, .model-usage-table td small { display: block; }
.model-usage-table td small { max-width: 250px; margin-top: 3px; overflow: hidden; color: var(--muted); font-size: 11px; text-overflow: ellipsis; white-space: nowrap; }
.model-usage-table code { padding: 2px 5px; border-radius: 4px; color: #6d3a53; background: #fff1f6; font-size: 11px; }
.usage-unavailable { color: var(--muted); font-size: 12px; }
.model-usage-pagination { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 12px; color: var(--muted); font-size: 12px; }
.model-usage-pagination > div { display: flex; gap: 8px; }
.model-usage-audit { display: grid; }
.model-usage-audit article { display: grid; grid-template-columns: minmax(220px, 1fr) minmax(180px, 1.4fr) auto; align-items: center; gap: 16px; padding: 10px 4px; border-bottom: 1px solid var(--line); font-size: 13px; }
.model-usage-audit article:last-child { border-bottom: 0; }
.model-usage-audit article > div { display: flex; align-items: center; gap: 8px; }
.model-usage-audit article span, .model-usage-audit article time, .model-usage-audit article p { color: var(--muted); font-size: 12px; }
.model-usage-audit article p { margin: 0; }
.model-usage-audit article time { white-space: nowrap; }

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

.step-list div {
  display: flex;
  align-items: center;
  gap: 10px;
}

.step-list span {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  color: #fff;
  border-radius: 50%;
  background: var(--pink-strong);
}

.segmented {
  display: flex;
  padding: 3px;
  border-radius: 8px;
  background: #f4edf4;
}

.segmented button {
  border: 0;
  padding: 8px 12px;
  border-radius: 8px;
  background: transparent;
}

.segmented .active {
  color: var(--pink-strong);
  background: #fff;
}

.mistake-table {
  display: block;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow-x: auto;
  overflow-y: visible;
  font-size: 12px;
}

.mistake-filter-bar { display: flex; align-items: end; gap: 12px; margin-bottom: 12px; font-size: 12px; }
.mistake-filter-bar label { display: grid; gap: 5px; color: var(--muted); }
.mistake-filter-bar label:first-child { flex: 1 1 320px; }
.mistake-filter-bar input, .mistake-filter-bar select { height: 34px; font-size: 12px; }
.mistake-title-actions { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; gap: 8px; }
.mistake-title-actions > .secondary-action { width: auto; min-height: 34px; margin: 0; padding: 7px 11px; white-space: nowrap; }
.mistake-output-status { min-height: 20px; margin: -5px 0 8px; color: var(--pink-strong); font-size: 12px; text-align: right; }
.mistake-output-status:empty { min-height: 0; margin: 0; }
.mistake-list-summary { margin: 0 0 8px; color: #4676b8; font-size: 12px; line-height: 1.5; }

.table-row {
  display: grid;
  grid-template-columns: minmax(180px, 1.25fr) minmax(160px, 1.25fr) 74px 132px;
  gap: 12px;
  align-items: center;
  padding: 14px;
  border-top: 1px solid var(--line);
}

.table-row:first-child {
  border-top: 0;
}

.table-head {
  color: var(--muted);
  background: #fff6f9;
}

.mistake-row {
  min-height: 82px;
  background: #fff;
}
.mistake-table .table-row { width: max-content; min-width: 100%; grid-template-columns: var(--mistake-grid-columns, 58px 142px 68px 320px 210px 150px 110px 170px 130px 132px); font-size: 12px; }
.mistake-table .table-row > span { min-width: 0; font-size: 12px; line-height: 1.5; }
.mistake-table .mistake-row > span { min-height: 0; overflow: hidden; }
.mistake-table .table-row button, .mistake-table .table-row small, .mistake-source { font-size: 12px; }
.mistake-source { display: flex; flex-direction: column; justify-content: center; color: var(--muted); line-height: 1.4; }
.mistake-source-chapter { display: block; color: #334155; overflow-wrap: anywhere; }
.mistake-source-detail { display: block; margin-top: 2px; color: var(--muted); font-size: 12px; line-height: 1.35; overflow-wrap: anywhere; }
.mistake-sequence, .mistake-output-choice { display: flex; align-items: center; justify-content: center; text-align: center; }
.mistake-created-at { color: var(--muted); font-variant-numeric: tabular-nums; text-align: center; }
.mistake-output-choice label { display: inline-flex; align-items: center; justify-content: center; cursor: pointer; }
.mistake-output-choice input { width: 16px; height: 16px; margin: 0; accent-color: var(--pink-strong); }
.mistake-output-choice input:disabled { cursor: not-allowed; opacity: .35; }
.mistake-review-cell { display: flex; align-items: center; justify-content: center; cursor: help; }
.mistake-review-cell .review-actions { display: inline-flex; align-items: center; justify-content: center; gap: 7px; }
.mistake-review-cell .review-actions button { margin: 0; padding: 3px 6px; white-space: nowrap; }
.mistake-cell { position: relative; display: block; min-width: 0; max-height: 4.5em; overflow-x: hidden; overflow-y: auto; overflow-wrap: anywhere; overscroll-behavior: contain; scrollbar-color: transparent transparent; scrollbar-width: thin; white-space: normal; }
.mistake-cell:hover, .mistake-cell:focus { scrollbar-color: transparent transparent; }
.mistake-cell::-webkit-scrollbar { width: 4px; }
.mistake-cell::-webkit-scrollbar-track { background: transparent; }
.mistake-cell::-webkit-scrollbar-thumb { border-radius: 4px; background: transparent; }
.mistake-cell:hover::-webkit-scrollbar-thumb, .mistake-cell:focus::-webkit-scrollbar-thumb { background: transparent; }
.mistake-question { white-space: normal; overflow-wrap: anywhere; }
.mistake-type-path { position: relative; color: #6d4aa2; cursor: help; white-space: normal; overflow-wrap: anywhere; }
.mistake-table .table-head { position: sticky; top: 0; z-index: 5; padding-top: 10.5px; padding-bottom: 10.5px; font-weight: 600; }
.mistake-table .table-head > span { position: relative; display: flex; align-items: center; justify-content: center; min-height: 18px; text-align: center; cursor: grab; user-select: none; }
.mistake-table .table-head > span.mistake-sorted { color: #2563eb; background: #eff6ff; }
.mistake-sort-indicator { margin-left: 4px; color: #2563eb; font-size: 11px; }
.mistake-table .table-head > span.all-selected::before, .mistake-table .table-head > span.partially-selected::before { position: absolute; left: 5px; color: #2563eb; content: "✓"; font-size: 10px; }
.mistake-table .table-head > span.partially-selected::before { content: "−"; }
.mistake-column-resizer { position: absolute; top: -14px; right: -7px; bottom: -14px; width: 14px; cursor: col-resize; touch-action: none; }
.mistake-column-resizer::after { position: absolute; top: 8px; right: 6px; bottom: 8px; width: 1px; background: #ddcbd5; content: ""; }
.mistake-column-resizer:hover::after, .mistake-column-resizer.dragging::after { width: 2px; background: var(--pink-strong); }
.mistake-column-dragging { cursor: grabbing !important; opacity: .55; }
.mistake-column-drop-before::before, .mistake-column-drop-after::after { position: absolute; top: -10px; bottom: -10px; width: 3px; border-radius: 2px; background: #2563eb; content: ""; pointer-events: none; }
.mistake-column-drop-before::before { left: -7px; }
.mistake-column-drop-after::after { right: -7px; }
.adjustable-table th, .adjustable-table td { box-sizing: border-box; }
.adjustable-table-header { position: relative; cursor: grab; user-select: none; }
.table-column-resizer { position: absolute; z-index: 5; top: 0; right: -6px; bottom: 0; width: 12px; cursor: col-resize; touch-action: none; }
.table-column-resizer::after { position: absolute; top: 20%; right: 5px; bottom: 20%; width: 1px; background: #d5c6cf; content: ""; }
.table-column-resizer:hover::after, .table-column-resizer.dragging::after { width: 2px; background: #2563eb; }
.table-column-dragging { cursor: grabbing !important; opacity: .55; }
.table-column-drop-before::before, .table-column-drop-after::after { position: absolute; z-index: 6; top: 0; bottom: 0; width: 3px; border-radius: 2px; background: #2563eb; content: ""; pointer-events: none; }
.table-column-drop-before::before { left: -2px; }
.table-column-drop-after::after { right: -2px; }
@media (hover: none), (pointer: coarse) { .table-column-resizer, .mistake-column-resizer { display: none; } .adjustable-table-header, .mistake-table .table-head > span { cursor: default; } }
.mistake-cell-tooltip { position: fixed; z-index: 9998; display: none; width: max-content; max-width: min(420px, calc(100vw - 24px)); padding: 8px 10px; color: #fff; background: #46384d; border-radius: 7px; box-shadow: 0 8px 22px rgb(45 38 48 / 24%); font-size: 12px; line-height: 1.55; overflow-wrap: anywhere; pointer-events: none; white-space: normal; }

.mistake-row.active {
  background: #fffdf8;
}
.mistake-row.processed { background: #f7f9fc; color: #687386; }

.mistake-main {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.mistake-main strong {
  font-size: 12px;
  line-height: 1.35;
}

.mistake-main small {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.ai-explain-field {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-width: 0;
}

.ai-explain-field > span {
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}

.ai-icon-actions {
  display: flex;
  gap: 8px;
}

.table-row button,
.exercise-card button {
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.table-row .icon-action {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  padding: 0;
  color: var(--muted);
  background: #fff;
}

.table-row .icon-action:hover,
.table-row .icon-action.active {
  color: var(--pink-strong);
  border-color: #edb8ca;
  background: #fff0f5;
}

.ai-symbol {
  position: relative;
  display: block;
}

.ai-symbol.mic {
  width: 12px;
  height: 17px;
  border: 1.7px solid currentColor;
  border-radius: 8px;
}

.ai-symbol.mic::before {
  position: absolute;
  left: 50%;
  bottom: -7px;
  width: 1.7px;
  height: 6px;
  background: currentColor;
  border-radius: 99px;
  content: "";
  transform: translateX(-50%);
}

.ai-symbol.mic::after {
  position: absolute;
  left: 50%;
  bottom: -9px;
  width: 12px;
  height: 1.7px;
  background: currentColor;
  border-radius: 99px;
  content: "";
  transform: translateX(-50%);
}

.ai-symbol.video {
  width: 17px;
  height: 13px;
  border: 1.7px solid currentColor;
  border-radius: 4px;
}

.ai-symbol.video::after {
  position: absolute;
  left: 6px;
  top: 3px;
  width: 0;
  height: 0;
  border-top: 3px solid transparent;
  border-bottom: 3px solid transparent;
  border-left: 5px solid currentColor;
  content: "";
}

.mistake-lecture-panel {
  display: grid;
  gap: 12px;
  padding: 14px;
  border-top: 1px solid var(--line);
  background: #fffdf8;
}

.lecture-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.lecture-toolbar strong {
  display: block;
  margin-bottom: 3px;
  font-size: 14px;
}

.lecture-toolbar span,
.voice-script {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.lecture-play {
  min-width: 64px;
  padding: 0 14px;
  color: var(--pink-strong);
}

.method-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.method-tabs button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  padding: 0 10px;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.method-tabs button.active {
  color: var(--pink-strong);
  border-color: #edb8ca;
  background: #fff0f5;
}

.method-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
}

.video-stage {
  min-height: 124px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.diagram-stage {
  display: grid;
  grid-template-columns: minmax(240px, 1fr) minmax(0, 0.9fr);
  align-items: center;
  gap: 16px;
}

.fraction-line {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  height: 64px;
  overflow: hidden;
  border: 1px solid #dfbfd0;
  border-radius: 8px;
}

.part {
  display: grid;
  place-items: center;
  min-width: 0;
  color: var(--ink);
  font-size: 12px;
  border-right: 1px solid #dfbfd0;
  animation: partPulse 2.4s ease-in-out infinite;
}

.part:last-child {
  border-right: 0;
}

.part.used {
  background: #ffe9df;
}

.part.known {
  background: #edf9f5;
}

.stage-copy strong {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
}

.stage-copy p,
.equation-step p,
.compare-stage p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
}

.equation-stage {
  display: grid;
  gap: 8px;
}

.equation-step {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  align-items: start;
  gap: 10px;
  padding: 9px 10px;
  border-radius: 8px;
  background: #f8fbff;
  animation: stepFade 2.8s ease-in-out infinite;
  animation-delay: calc(var(--step-index) * 0.16s);
}

.equation-step span {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  color: #fff;
  font-size: 12px;
  border-radius: 50%;
  background: var(--pink-strong);
}

.compare-stage {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.compare-stage > div {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.compare-label {
  display: inline-flex;
  margin-bottom: 8px;
  font-size: 12px;
  font-weight: 700;
}

.compare-label.wrong {
  color: var(--danger);
}

.compare-label.right {
  color: #269c77;
}

@keyframes partPulse {
  0%,
  100% {
    filter: saturate(1);
  }
  50% {
    filter: saturate(1.28);
  }
}

@keyframes stepFade {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-2px);
  }
}

.exercise-card {
  padding: 16px;
  margin-bottom: 12px;
}

.exercise-card p {
  color: var(--ink);
}

.basis-list {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.9;
}

.chat-layout {
  max-width: 920px;
}

.chat-panel {
  display: grid;
  gap: 14px;
}

.message {
  max-width: 78%;
  padding: 14px;
  border-radius: 8px;
}

.message.ai {
  background: #f8f1ff;
}

.message.student {
  justify-self: end;
  background: #fff2f6;
}

.bar {
  height: 28px;
  overflow: hidden;
  border: 1px solid #dfbfd0;
  border-radius: 8px;
  background: #fff;
}

.bar span {
  display: block;
  height: 100%;
  background: var(--peach);
}

.voice-tools {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fbff;
}

.voice-tools span {
  color: var(--muted);
  font-size: 13px;
}

#voice-input {
  position: fixed;
  left: -9999px;
  top: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.chat-input {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 10px;
}

.voice-input-action {
  white-space: nowrap;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}

.voice-input-action.is-recording {
  color: #fff;
  border-color: var(--pink-strong);
  background: var(--pink-strong);
}

.capture-guide {
  display: grid;
  gap: 8px;
  margin-top: 14px;
  padding: 12px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fffdf8;
}

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

.capture-guide span {
  position: relative;
  padding-left: 16px;
}

.capture-guide span::before {
  position: absolute;
  left: 0;
  color: var(--pink-strong);
  content: "•";
}

.library-grid,
.report-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.library-grid article {
  padding: 16px;
}

.library-toolbar { display: flex; gap: 12px; margin: 14px 0; }
.library-toolbar label { display: flex; align-items: center; gap: 7px; color: var(--muted); font-size: 13px; }
.library-toolbar select { padding: 8px 28px 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.library-grid article.archived { opacity: .72; background: #f8fafc; }
.library-card-actions { display: flex; justify-content: flex-end; margin-top: 12px; }
.danger-text { color: #b91c1c; }
.library-import-form { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 14px 0; padding: 16px; border: 1px solid var(--line); border-radius: 10px; background: #f8fafc; }
.library-import-form[hidden] { display: none; }
.library-import-form label { display: grid; gap: 6px; color: var(--muted); font-size: 13px; }
.library-import-form input, .library-import-form select { min-width: 0; padding: 9px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.library-import-form .form-actions { grid-column: 1 / -1; }
.platform-task-section { margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line); }
#platform-task-list { display: grid; gap: 10px; }
.platform-task-card { display: grid; grid-template-columns: minmax(180px, 1fr) minmax(100px, 2fr) 48px auto; align-items: center; gap: 12px; padding: 14px; border: 1px solid var(--line); border-radius: 10px; }
.platform-task-card p { margin: 4px 0 0; color: var(--muted); font-size: 12px; }
.platform-task-card details { grid-column: 1 / -1; }
.mini-progress { height: 7px; overflow: hidden; border-radius: 7px; background: #e2e8f0; }
.mini-progress i { display: block; height: 100%; background: #22c55e; }
.daily-checkin-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(280px, .8fr); gap: 18px; }
.daily-upload-box { display: grid; place-items: center; min-height: 190px; margin-top: 16px; padding: 24px; border: 2px dashed #b7d8c8; border-radius: 12px; text-align: center; background: #f5fbf8; }
.daily-upload-box p { margin: 6px 0 18px; color: var(--muted); }
.daily-checkin-result { display: grid; gap: 10px; margin-top: 16px; }
.daily-recognition-card { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px; border: 1px solid #f0c66b; border-radius: 10px; background: #fffaf0; }
.daily-recognition-card.complete { border-color: #8bc9aa; background: #f2fbf6; }
.daily-recognition-card strong { display: block; margin-bottom: 4px; }
.daily-recognition-card p { margin: 0; color: var(--muted); line-height: 1.5; }
.daily-detection-preview { padding: 12px; border: 1px solid var(--line); border-radius: 10px; background: #fbfcfd; }
.daily-detection-preview .panel-head h4 { margin: 0; }
.daily-detection-preview .panel-head p { margin: 4px 0 0; color: var(--muted); font-size: 12px; }
.daily-detection-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 7px; max-height: 440px; margin-top: 10px; overflow-y: auto; }
.daily-detection-tile { min-width: 0; margin: 0; overflow: hidden; border: 2px solid #e3b45a; border-radius: 7px; background: #fff; }
.daily-detection-tile.recognized { border-color: #62b389; }
.daily-detection-tile img { display: block; width: 100%; aspect-ratio: 2.6 / 1; object-fit: contain; background: #fff; }
.daily-detection-tile figcaption { padding: 3px 5px; color: #9a6700; background: #fff8e7; font-size: 11px; text-align: center; }
.daily-detection-tile.recognized figcaption { color: #18794e; background: #edf9f2; }
.daily-result-summary { display: flex; align-items: center; gap: 16px; padding: 16px; border-radius: 10px; background: #ecfdf3; }
.daily-result-summary strong { color: #15803d; font-size: 30px; }
.daily-wrong-item { padding: 12px; border-left: 4px solid var(--danger); border-radius: 8px; background: #fff6f6; }
.daily-wrong-item p, .daily-wrong-item small { display: block; margin: 5px 0 0; color: var(--muted); }
.daily-stat-list { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 16px 0; }
.daily-stat-list > div { padding: 13px; border-radius: 9px; background: #f6fbf8; }
.daily-stat-list span, .daily-stat-list strong { display: block; }
.daily-stat-list span { color: var(--muted); font-size: 12px; }
.daily-stat-list strong { margin-top: 5px; }
.daily-history { display: grid; gap: 8px; }
.daily-history > div:not(.empty-state) { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; padding: 9px 0; border-bottom: 1px solid var(--line); font-size: 13px; }
.daily-history small { color: var(--muted); }
.recitation-layout { display: grid; grid-template-columns: minmax(0, 1.36fr) minmax(280px, .64fr); gap: 18px; }
.recitation-left-panel { align-self: start; }
.recitation-plan-heading h3 { color: #60a5fa; cursor: pointer; user-select: none; }
.recitation-plan-heading h3::after { display: inline-block; margin-left: 7px; color: #93c5fd; content: "⌃"; font-size: 12px; transition: transform .15s ease; }
.recitation-plan-heading h3[aria-expanded="false"]::after { transform: rotate(180deg); }
.recitation-plan-heading h3:focus-visible { border-radius: 5px; outline: 2px solid #bfdbfe; outline-offset: 3px; }
.recitation-content-section { margin-top: 3px; padding-top: 0; border-top: 0; }
.recitation-planner-section { margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--line); }
.recitation-study-card { min-height: 220px; padding: 18px; border-radius: 10px; background: #fffaf5; }
.recitation-study-card.hidden-for-dictation .recitation-original, .recitation-study-card.hidden-for-dictation .recitation-pinyin { filter: blur(8px); user-select: none; }
.recitation-meta, .recitation-pinyin { color: var(--muted); font-size: 13px; }
.recitation-author { margin: 4px 0 0; color: var(--muted); font-family: "Songti SC", serif; font-size: 13px; }
.recitation-original { margin: 14px 0; white-space: pre-line; font-family: "Songti SC", serif; font-size: 20px; line-height: 2; }
.recitation-meaning { padding-top: 12px; border-top: 1px solid var(--line); }
.recitation-tabs { display: flex; gap: 10px; margin-top: 12px; }
.recitation-tabs { margin-top: 3px; }
.recitation-left-workspace, .recitation-checkin-workspace { height: max(318px, calc(100dvh - 195px)); min-height: 0; overflow-y: auto; scrollbar-gutter: stable; }
.recitation-recording-controls { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 14px; }
#recitation-recording-time { min-width: 48px; color: #b91c1c; font-size: 12px; font-variant-numeric: tabular-nums; font-weight: 700; }
#recitation-plan-list { display: grid; gap: 0; margin-top: 0; padding-top: 3px; }
.recitation-planner-panel { margin-top: 18px; }
.recitation-plan-form { margin-top: 16px; }
.recitation-plan-table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; }
.recitation-plan-table { width: 100%; min-width: 620px; border-collapse: collapse; color: var(--text); text-align: center; font-size: 11px; font-weight: 400; }
.recitation-plan-table th, .recitation-plan-table td { padding: 13px 12px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.recitation-plan-table th { color: var(--text); font-size: 11px; font-weight: 400; }
.recitation-plan-table tr:last-child th, .recitation-plan-table tr:last-child td { border-bottom: 0; }
.recitation-plan-table th:last-child, .recitation-plan-table td:last-child { border-right: 0; }
.recitation-plan-table thead th { color: var(--text); background: #f1f5f9; font-size: 11px; font-weight: 400; }
.recitation-plan-table thead small { display: block; margin-top: 3px; color: var(--text); font-size: 11px; font-weight: 400; }
.recitation-plan-table tbody th { width: 92px; background: #f8fafc; }
.recitation-plan-table label { display: inline-flex; align-items: center; justify-content: center; gap: 5px; min-width: 76px; padding: 6px 8px; border-radius: 8px; color: var(--text); background: #fff; cursor: pointer; font-size: 11px; font-weight: 400; }
.recitation-plan-table label:has(input:checked) { color: var(--text); background: #dbeafe; font-weight: 400; }
.recitation-plan-table input { width: 14px; height: 14px; accent-color: #2563eb; }
.recitation-plan-summary { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 10px; margin-top: 14px; }
.recitation-plan-summary[hidden] { display: none; }
.recitation-plan-summary .empty-state { grid-column: 1 / -1; }
.recitation-plan-stat { padding: 12px; border: 1px solid #dbeafe; border-radius: 10px; background: #f8fbff; }
.recitation-plan-stat span, .recitation-plan-stat strong { display: block; }
.recitation-plan-stat span { color: var(--muted); font-size: 12px; }
.recitation-plan-stat strong { margin-top: 5px; color: #1e3a8a; font-size: 20px; }
.recitation-plan-dates { display: flex; align-items: center; justify-content: center; gap: 8px; margin-top: 12px; overflow-x: auto; padding: 2px 0; }
.recitation-plan-dates label { display: inline-flex; flex: 0 0 auto; align-items: center; gap: 5px; color: var(--text); font-size: 12px; white-space: nowrap; }
.recitation-plan-dates input { width: 116px; min-width: 0; height: 30px; padding: 0 7px; border: 1px solid var(--line); border-radius: 7px; background: #fff; font-size: 12px; }
.recitation-plan-dates .primary-action { flex: 0 0 auto; height: 30px; padding: 0 11px; border-radius: 7px; font-size: 12px; white-space: nowrap; }
.recitation-plan-status { min-height: 22px; margin: 10px 0 0; color: var(--muted); font-size: 13px; }
.recitation-inline-planner .recitation-plan-table { min-width: 405px; }
.recitation-inline-planner .recitation-plan-table th, .recitation-inline-planner .recitation-plan-table td { padding: 5px 4px; }
.recitation-inline-planner .recitation-plan-table tbody th { width: 69px; }
.recitation-inline-planner .recitation-plan-table label { min-width: 51px; padding: 4px 5px; }
.recitation-inline-planner .recitation-plan-summary { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.recitation-plan-batches { display: grid; gap: 8px; margin-top: 12px; }
.recitation-plan-period { display: flex; align-items: center; gap: 12px; padding: 7px 9px; border-bottom: 1px solid #e5efff; color: #60a5fa; font-size: 12px; }.recitation-plan-period:last-child { border-bottom: 0; }.recitation-plan-period strong { font-weight: 400; }.recitation-plan-period span { color: var(--muted); }
.recitation-today-plan { overflow-x: auto; padding: 0; border: 0; background: transparent; }
.recitation-today-title { margin: 0; color: #60a5fa; font-size: 18px; font-weight: 400; line-height: 1.2; text-align: center; }
.recitation-today-line { display: flex; width: 100%; min-width: 0; align-items: center; justify-content: flex-start; gap: 18px; margin: 5px 0 0; color: #60a5fa; white-space: nowrap; }
.recitation-today-group > span { color: #60a5fa; font-size: 14px; font-weight: 400; }
.recitation-today-group { display: inline-flex; align-items: center; gap: 7px; }
.recitation-task-numbers { display: inline-flex; flex-wrap: nowrap; gap: 5px; }
.recitation-task-number { display: inline-grid; place-items: center; width: 22px; height: 22px; padding: 0; border: 1px solid #dbeafe; border-radius: 50%; color: #60a5fa; background: rgba(219, 234, 254, .5); cursor: pointer; font-size: 11px; font-weight: 400; transition: border-color .15s ease, box-shadow .15s ease, transform .15s ease; }
.recitation-task-number:hover { border-color: #2563eb; transform: translateY(-1px); }
.recitation-task-number.active { color: #fff; border-color: #2563eb; background: #2563eb; box-shadow: 0 0 0 2px #dbeafe; font-weight: 700; }
.recitation-task-number.completed { color: #166534; border-color: #86efac; background: #dcfce7; }
.recitation-task-number.completed.active { color: #fff; border-color: #16a34a; background: #16a34a; box-shadow: 0 0 0 3px #dcfce7; }
.recitation-task-number.overdue:not(.completed) { color: #b45309; border-color: #fcd34d; background: #fffbeb; }
.recitation-task-empty { color: var(--muted); font-size: 13px; }
.recitation-today-plan .recitation-task-empty { color: #60a5fa; font-weight: 400; }
.recitation-today-actions { display: inline-flex; flex: 0 0 auto; align-items: center; gap: 6px; margin-left: auto; }
.recitation-today-actions > button { flex: 0 0 auto; height: 24px; margin: 0; padding: 0 8px; border-radius: 6px; font-size: 11px; line-height: 24px; white-space: nowrap; }
.recitation-selection-mode { border: 1px solid #bfdbfe; color: #2563eb; background: #eff6ff; cursor: pointer; }
.recitation-selection-mode:hover { border-color: #60a5fa; background: #dbeafe; }
.recitation-selection-mode.active { border-color: #2563eb; color: #fff; background: #2563eb; font-weight: 700; }
.recitation-selection-mode:disabled { cursor: default; opacity: .45; }
.recitation-refresh-task { border: 1px solid #bfdbfe; color: #60a5fa; background: #f8fbff; cursor: pointer; font-weight: 400; }.recitation-refresh-task:hover { border-color: #60a5fa; }.recitation-refresh-task:disabled { cursor: default; opacity: .45; }
.recitation-focus-toggle { border: 1px solid #bfdbfe; color: #2563eb; background: #fff; cursor: pointer; font-size: 15px !important; font-weight: 700; }
.recitation-focus-toggle:hover { border-color: #2563eb; background: #eff6ff; }
body.recitation-focus-open { overflow: hidden; }
#chinese-recitation { min-width: 0; }
#chinese-recitation.recitation-focus-mode { position: fixed; inset: 0; z-index: 1200; display: block !important; overflow-x: hidden; overflow-y: auto; padding: 18px; background: #f8fafc; }
#chinese-recitation.recitation-focus-mode .recitation-layout { grid-template-columns: minmax(0, 1fr); min-height: calc(100dvh - 36px); }
#chinese-recitation.recitation-focus-mode .recitation-left-panel { align-self: stretch; width: 100%; border: 0; box-shadow: none; }
#chinese-recitation.recitation-focus-mode .recitation-checkin-panel { display: none; }
#chinese-recitation.recitation-focus-mode .recitation-planner-section,
#chinese-recitation.recitation-focus-mode .recitation-checkin-progress,
#chinese-recitation.recitation-focus-mode .recitation-history-panel { display: none; }
#chinese-recitation.recitation-focus-mode .recitation-left-workspace { height: auto; min-height: 0; overflow: visible; scrollbar-gutter: auto; }
#chinese-recitation .recitation-left-panel:fullscreen { overflow-x: hidden; overflow-y: auto; padding: 18px; background: #f8fafc; }
#chinese-recitation.recitation-focus-mode .recitation-focus-toggle { position: fixed; top: 14px; right: 14px; z-index: 3; width: 34px; height: 34px; padding: 0; border-radius: 9px; background: #fff; box-shadow: 0 5px 18px rgba(15, 23, 42, .16); font-size: 18px !important; line-height: 34px; }
#chinese-recitation.recitation-focus-mode .recitation-today-plan { padding-right: 42px; }
.recitation-day-plan { overflow: hidden; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
.recitation-day-plan > header { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 11px 13px; background: #f8fafc; }
.recitation-day-plan > header span { color: var(--muted); font-size: 12px; }
.recitation-day-items { display: grid; }
.recitation-day-items .recitation-history-item { border-radius: 0; border-bottom: 1px solid var(--line); }
.recitation-day-items .recitation-history-item:last-child { border-bottom: 0; }
.recitation-plan-mode { color: #1d4ed8; font-weight: 700; }
.recitation-tabs button { flex: 1; padding: 10px; border: 0; border-radius: 8px; background: rgba(37, 99, 235, .7); cursor: pointer; }
.recitation-tabs button.active { color: #fff; background: #2563eb; }
.recitation-checkin-panel button, .recitation-checkin-panel .file-trigger { height: 30px; margin-top: 0; padding: 0 10px; font-size: 11px; }
.recitation-attempt-list { display: grid; gap: 8px; margin-top: 12px; }
.recitation-attempt { display: grid; gap: 7px; padding: 9px; border: 1px solid var(--line); border-radius: 9px; background: #fff; }.recitation-attempt.selected { border-color: #93c5fd; background: #f8fbff; }.recitation-attempt.saved { box-shadow: inset 3px 0 #60a5fa; }
.recitation-attempt-head, .recitation-attempt-foot { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 11px; }
.recitation-checkin-panel .recitation-attempt-select { height: auto; padding: 0; border: 0; color: #2563eb; background: transparent; font-weight: 600; cursor: pointer; }
.recitation-attempt-duration { font-variant-numeric: tabular-nums; }
.recitation-checkin-panel .recitation-attempt-save { height: 24px; margin-left: auto; padding: 0 8px; border: 1px solid #bfdbfe; border-radius: 6px; color: #2563eb; background: #eff6ff; cursor: pointer; }.recitation-checkin-panel .recitation-attempt-save.saved { color: #166534; border-color: #86efac; background: #dcfce7; }
.recitation-attempt-title { color: var(--text); font-size: 11px; font-weight: 400; }
.recitation-attempt audio { width: 100%; height: 30px; }
.recitation-attempt-foot { justify-content: space-between; }.recitation-checkin-panel .recitation-attempt-foot button { height: 24px; padding: 0 7px; border: 1px solid var(--line); border-radius: 6px; color: #60a5fa; background: #fff; cursor: pointer; }
.recitation-compare-result { display: grid; gap: 12px; margin-top: 18px; }
.recitation-score { display: flex; align-items: center; gap: 14px; padding: 14px; border-radius: 9px; }
.recitation-score.passed { background: #ecfdf3; }.recitation-score.failed { background: #fff1f2; }
.recitation-score strong { font-size: 28px; }
.compare-block { padding: 12px; border: 1px solid var(--line); border-radius: 9px; }
.compare-block p { line-height: 2; }
.compare-error, .compare-extra, .compare-wrong { color: #dc2626; background: #fee2e2; text-decoration: underline; }
.compare-missing { color: #c2410c; background: #ffedd5; text-decoration: underline wavy; }
.compare-correct { color: #166534; }
.recitation-checkin-progress { margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--line); }.recitation-checkin-progress h3 { display: flex; align-items: center; min-height: 34px; margin: 0 0 16px; color: #60a5fa; font-size: 14px; font-weight: 400; }
.recitation-checkin-progress h3[role="button"] { cursor: pointer; user-select: none; }
.recitation-checkin-progress h3[role="button"]:focus-visible { border-radius: 5px; outline: 2px solid #bfdbfe; outline-offset: 3px; }
.recitation-progress-table-wrap { width: 100%; overflow-x: visible; }
.recitation-progress-table { width: 100%; min-width: 0; table-layout: fixed; border-collapse: collapse; font-size: 10px; text-align: center; }
.recitation-progress-table th, .recitation-progress-table td { padding: 6px 2px; border: 1px solid var(--line); font-weight: 400; white-space: nowrap; }.recitation-progress-table th { background: #f8fbff; color: #60a5fa; }.recitation-progress-table th:first-child { width: 26%; }.recitation-progress-table th:not(:first-child) { width: 37%; }
.recitation-progress-count { color: #60a5fa; font-size: 12px; font-weight: 400; font-variant-numeric: tabular-nums; }
.recitation-history-panel { margin-top: 18px; }
#chinese-recitation .recitation-plan-heading h3,
#chinese-recitation .recitation-history-panel > h3,
#chinese-recitation .recitation-checkin-progress > h3 { color: #111; font-size: 15px; }
#chinese-recitation .recitation-today-title { color: #111; font-size: 18px; }
#chinese-recitation .recitation-tabs button,
#chinese-recitation .recitation-tabs button.active { color: #fff; font-size: 15px; }
#chinese-recitation .recitation-plan-table,
#chinese-recitation .recitation-plan-table th,
#chinese-recitation .recitation-plan-table label,
#chinese-recitation .recitation-plan-table small,
#chinese-recitation .recitation-plan-table span,
#chinese-recitation .recitation-progress-table,
#chinese-recitation .recitation-progress-table th,
#chinese-recitation .recitation-progress-table td,
#chinese-recitation .recitation-progress-count { color: #2563eb; font-size: 12px; }
#chinese-recitation .recitation-plan-form,
#chinese-recitation .recitation-plan-form label,
#chinese-recitation .recitation-plan-form input,
#chinese-recitation .recitation-plan-form button,
#chinese-recitation .recitation-plan-form span,
#chinese-recitation .recitation-plan-form small,
#chinese-recitation .recitation-plan-form strong,
#chinese-recitation .recitation-plan-status { color: #2563eb; font-size: 12px; }
#chinese-recitation .recitation-plan-dates label,
#chinese-recitation .recitation-plan-dates label span,
#chinese-recitation .recitation-plan-dates input { color: #111; }
#chinese-recitation .recitation-plan-dates .primary-action { color: #fff; }
#chinese-recitation [data-action="toggle-recitation-recording"],
#chinese-recitation #recitation-recording-status,
#chinese-recitation #recitation-attempt-list .empty-state,
#chinese-recitation #recitation-compare-result .empty-state { font-size: 12px; }
#chinese-recitation.recitation-recording-active #recitation-study-card .recitation-meta,
#chinese-recitation.recitation-recording-active #recitation-study-card .recitation-author,
#chinese-recitation.recitation-recording-active #recitation-study-card .recitation-original,
#chinese-recitation.recitation-recording-active #recitation-study-card .recitation-pinyin,
#chinese-recitation.recitation-recording-active #recitation-study-card .recitation-meaning { display: none; }
#recitation-history { display: grid; gap: 8px; margin-top: 12px; }
.recitation-history-item { display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 14px; padding: 12px; border-left: 4px solid #22c55e; border-radius: 8px; background: #f8fafc; }
.recitation-history-item.pending { border-left-color: #ef4444; }.recitation-history-item p { margin: 3px 0 0; color: var(--muted); font-size: 12px; }
.recitation-history-item audio { width: min(360px, 100%); height: 28px; margin-top: 7px; }

.library-status {
  min-height: 22px;
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 14px;
}

.library-grid strong {
  display: block;
  margin-top: 8px;
}

.library-grid small {
  color: var(--muted);
}

.confirmed-exercise-panel {
  margin-top: 18px;
}

.section-note {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.confirmed-exercise-list {
  display: grid;
  gap: 16px;
}

.confirmed-exercise-group { display: grid; gap: 12px; }
.confirmed-group-heading { position: sticky; top: 0; z-index: 3; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; background: #fff8fb; }
.confirmed-group-heading h4, .confirmed-group-heading p { margin: 0; }
.confirmed-group-heading p { margin-top: 3px; color: var(--muted); font-size: 12px; }
.confirmed-group-heading > div:last-child { display: flex; gap: 8px; }
.confirmed-mistake-choice { display: flex; align-items: center; gap: 8px; cursor: pointer; }
.confirmed-mistake-choice input { width: 20px; height: 20px; accent-color: var(--pink-strong); }
.confirmed-exercise-card.saved-mistake { border-color: #9edfc8; box-shadow: inset 4px 0 #57b796; }
.textbook-mistake-table-wrap { position: relative; width: 100%; overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; }
.textbook-mistake-table { width: max-content; min-width: 100%; border-collapse: collapse; background: #fff; font-size: 12px; font-weight: 400; }
.textbook-mistake-table th, .textbook-mistake-table td { min-width: 44px; height: 40px; padding: 5px; text-align: center; font-size: 12px; font-weight: 400; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.textbook-mistake-table thead th { position: sticky; top: 0; z-index: 2; background: #fff8fb; }
.textbook-mistake-table th:first-child { position: sticky; left: 0; z-index: 3; min-width: 104px; text-align: left; background: #fff8fb; }
.textbook-mistake-table tbody th:first-child { cursor: default; user-select: none; }
.textbook-mistake-table .confirmed-mistake-choice { justify-content: center; }
.textbook-mistake-table .confirmed-mistake-choice input { width: 16px; height: 16px; margin: 0; }
.textbook-mistake-table td.unavailable { color: #cbd5e1; background: #f8fafc; }
.textbook-row-context-menu { position: fixed; z-index: 2147483647; display: grid; min-width: 150px; max-height: 280px; overflow-y: auto; padding: 5px; border: 1px solid var(--line); border-radius: 8px; background: #fff; box-shadow: 0 8px 24px rgb(15 23 42 / 18%); pointer-events: auto; }
.textbook-row-context-menu[hidden] { display: none; }
.textbook-row-context-menu button, .textbook-row-context-menu span { padding: 7px 10px; border: 0; border-radius: 5px; background: transparent; color: var(--text); font-family: inherit; font-size: 12px; font-weight: 400; line-height: 1.4; text-align: left; white-space: nowrap; }
.textbook-row-context-menu button:hover { background: #fff1f6; }
.textbook-row-context-menu button { cursor: pointer; }
.textbook-output-head { display: block; width: 100%; min-height: 32px; }
.textbook-save-actions { display: flex; align-items: center; justify-content: flex-start; width: 100%; }
.textbook-mistake-table td { position: relative; }
.textbook-use-count { position: absolute; top: 2px; right: 3px; min-width: 14px; height: 14px; padding: 0 3px; border-radius: 7px; background: var(--pink-strong); color: #fff; font-size: 10px; line-height: 14px; text-align: center; pointer-events: none; }
.textbook-save-actions button { display: inline-flex; align-items: center; justify-content: center; width: auto; height: 28px; min-height: 28px; margin: 0; padding: 0 8px; border: 1px solid var(--pink-strong); border-radius: 6px; font-family: inherit; font-size: 13px; font-weight: 400; line-height: 1; white-space: nowrap; }
.analogy-settings-dialog { width: min(420px, calc(100vw - 32px)); padding: 0; border: 1px solid var(--line); border-radius: 14px; background: #fff; box-shadow: var(--shadow); }
.analogy-settings-dialog::backdrop { background: rgb(45 38 48 / 35%); backdrop-filter: blur(2px); }
.analogy-settings-dialog form { display: grid; gap: 16px; padding: 22px; }
.analogy-settings-dialog h3 { margin: 0; }
.analogy-settings-dialog label { display: grid; grid-template-columns: 90px 1fr; align-items: center; gap: 10px; color: var(--ink); font-size: 13px; }
.analogy-settings-dialog select { width: 100%; height: 36px; border: 1px solid var(--line); border-radius: 7px; background: #fff; }
.analogy-settings-actions { display: flex; justify-content: flex-end; gap: 8px; }
.analogy-settings-actions button { margin: 0; }
.pet-practice-dialog { width: min(480px, calc(100vw - 28px)); padding: 0; border: 1px solid var(--line); border-radius: 14px; background: #fff; box-shadow: var(--shadow); }
.pet-practice-dialog::backdrop { background: rgb(45 38 48 / 35%); backdrop-filter: blur(2px); }
.pet-practice-dialog form { display: grid; gap: 16px; padding: 22px; }
.pet-practice-dialog h3, .pet-practice-dialog p { margin: 0; }
.pet-practice-dialog fieldset { min-width: 0; margin: 0; padding: 12px; border: 1px solid var(--line); border-radius: 10px; }
.pet-practice-dialog legend { padding: 0 6px; color: var(--muted); font-size: 12px; font-weight: 750; }
.pet-practice-options { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.pet-practice-dialog fieldset:first-of-type .pet-practice-options { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.pet-relearn-dialog { width: min(1040px, calc(100vw - 28px)); max-height: calc(100dvh - 28px); padding: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 16px; background: #fff; box-shadow: var(--shadow); }
.pet-relearn-dialog::backdrop { background: rgb(45 38 48 / 35%); backdrop-filter: blur(2px); }
.pet-relearn-shell { display: grid; gap: 12px; padding: 18px; }
.pet-relearn-shell h3, .pet-relearn-shell p { margin: 0; }
.pet-relearn-card { min-height: 390px; max-height: calc(100dvh - 190px); display: grid; align-content: center; justify-items: center; padding: 12px 20px; overflow-y: auto; border: 1px solid #dbe6f5; border-radius: 16px; background: linear-gradient(145deg, #fff 0%, #f6f9ff 100%); text-align: center; }
.pet-relearn-head { position: relative; align-items: center; }
.pet-relearn-head-actions { margin-left: auto; display: inline-flex; align-items: center; gap: 8px; }
.pet-relearn-head-actions button { min-height: 34px; margin: 0; }
.pet-relearn-navigation { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); display: inline-flex; align-items: center; gap: clamp(18px, 4vw, 48px); white-space: nowrap; }
.pet-relearn-navigation button { border: 0; background: transparent; box-shadow: none; color: #315fd6; cursor: pointer; font-weight: 800; }
.pet-relearn-navigation button:disabled { border: 0; background: transparent; box-shadow: none; color: #a5afbf; cursor: not-allowed; }
.pet-relearn-navigation strong { min-width: 50px; color: var(--muted); font-size: 12px; text-align: center; }
.pet-practice-options label { cursor: pointer; }
.pet-practice-options input { position: absolute; opacity: 0; pointer-events: none; }
.pet-practice-options span { min-height: 38px; display: flex; align-items: center; justify-content: center; gap: 5px; padding: 6px 10px; border: 1px solid #d7dfeb; border-radius: 9px; background: #f8fafc; color: #516079; font-size: 13px; font-weight: 750; }
.pet-practice-options input:checked + span { border-color: #4f7cff; background: #eff4ff; color: #244aaf; box-shadow: 0 0 0 2px rgba(79,124,255,.1); }
.pet-practice-options input:focus-visible + span { outline: 2px solid #315fd6; outline-offset: 2px; }
.mistake-analysis-dialog { width: min(900px, calc(100vw - 28px)); max-height: calc(100vh - 28px); padding: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 14px; background: #fff; box-shadow: var(--shadow); }
.mistake-analysis-dialog::backdrop { background: rgb(45 38 48 / 35%); backdrop-filter: blur(2px); }
.mistake-analysis-shell { display: grid; gap: 14px; max-height: calc(100vh - 30px); padding: 18px; overflow-y: auto; }
.mistake-analysis-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.mistake-analysis-head h3, .mistake-analysis-head p { margin: 0; }.mistake-analysis-head p { margin-top: 4px; color: var(--muted); font-size: 12px; }
.mistake-analysis-summary { padding: 12px; border-left: 4px solid #60a5fa; border-radius: 8px; background: #f4f8ff; }.mistake-analysis-summary p { margin: 5px 0 0; }
.mistake-analysis-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-top: 10px; }
.mistake-analysis-grid section { padding: 10px 12px; border: 1px solid var(--line); border-radius: 9px; }.mistake-analysis-grid h4 { margin: 0 0 5px; font-size: 13px; }.mistake-analysis-grid ul { margin: 0; padding-left: 18px; font-size: 12px; line-height: 1.7; }
.mistake-analysis-generate { display: grid; gap: 10px; padding-top: 12px; border-top: 1px solid var(--line); }.mistake-analysis-generate > label { display: grid; gap: 5px; color: var(--muted); font-size: 12px; }.mistake-analysis-generate textarea { width: 100%; resize: vertical; }
.mistake-analysis-options { display: flex; flex-wrap: wrap; align-items: end; gap: 9px; }.mistake-analysis-options label { display: grid; gap: 4px; color: var(--muted); font-size: 12px; }.mistake-analysis-options input, .mistake-analysis-options select { width: 96px; height: 34px; }.mistake-analysis-options button { width: auto; min-height: 34px; margin: 0; }
.mistake-analysis-questions { display: grid; gap: 8px; }.mistake-analysis-questions > h4 { margin: 0; }.mistake-analysis-questions article { padding: 11px 12px; border: 1px solid #dbeafe; border-radius: 9px; background: #fbfdff; }.mistake-analysis-questions article p { margin: 6px 0; }.mistake-analysis-questions details { color: var(--muted); font-size: 12px; }
.mistake-analysis-question-source { display: block; margin-top: 4px; overflow: hidden; color: var(--muted); font-size: 11px; text-overflow: ellipsis; white-space: nowrap; }
.mistake-analysis-history { padding-top: 12px; border-top: 1px solid var(--line); }.mistake-analysis-history > h4 { margin: 0 0 8px; }.mistake-analysis-history #mistake-analysis-history { display: grid; gap: 6px; }.mistake-analysis-history button { display: grid; grid-template-columns: 130px minmax(0, 1fr) auto; align-items: center; gap: 10px; width: 100%; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; text-align: left; background: #fff; cursor: pointer; }.mistake-analysis-history button span, .mistake-analysis-history button small { color: var(--muted); font-size: 11px; }.mistake-analysis-history button strong { overflow: hidden; font-size: 12px; font-weight: 500; text-overflow: ellipsis; white-space: nowrap; }
@media (max-width: 700px) { .mistake-analysis-grid { grid-template-columns: 1fr; }.mistake-analysis-history button { grid-template-columns: 1fr; }.mistake-analysis-options { align-items: stretch; }.mistake-analysis-options button { flex: 1 1 150px; } }
.preview-checkin-panel { margin-top: 18px; }
.preview-checkin-summary { margin: 10px 0; color: var(--pink-strong); }
.preview-recorder { display: grid; grid-template-columns: minmax(240px, 420px) 1fr; gap: 14px 18px; margin: 12px 0 16px; padding: 14px; border: 1px solid var(--line); border-radius: 12px; background: #fff8fb; }
.preview-recorder[hidden] { display: none; }
.preview-recorder video { grid-row: span 2; width: 100%; max-height: 300px; border-radius: 10px; background: #111; object-fit: cover; }
.preview-recorder-info { display: grid; align-content: end; gap: 8px; }
.preview-recorder-info strong { font-size: 20px; }
.preview-recorder-info span { color: #dc2626; font-variant-numeric: tabular-nums; }
.preview-recorder-actions { display: flex; flex-wrap: wrap; align-items: start; gap: 8px; }
.preview-checkin-table-wrap { width: 100%; max-height: calc(100vh - 245px); overflow: auto; border: 1px solid var(--line); border-radius: 12px; }
.preview-checkin-table { width: max-content; min-width: 100%; border-collapse: collapse; background: #fff; font-size: 13px; }
.preview-checkin-table th, .preview-checkin-table td { width: 132px; min-width: 132px; height: 68px; padding: 7px; text-align: center; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.preview-checkin-table thead th { position: sticky; top: 0; z-index: 2; height: 44px; background: #fff8fb; }
.preview-checkin-table th:first-child { position: sticky; left: 0; z-index: 3; width: 104px; min-width: 104px; background: #fff8fb; }
.preview-video-record, .preview-video-complete, .preview-video-replace { border: 0; border-radius: 7px; font-family: inherit; cursor: pointer; }
.preview-video-record { display: inline-flex; align-items: center; gap: 5px; padding: 8px 10px; color: var(--pink-strong); background: #fff1f6; }
.preview-video-record span { font-size: 18px; line-height: 1; }
.preview-video-complete { display: inline-flex; align-items: center; gap: 5px; padding: 7px 9px; color: #08775b; background: #e8f8f2; }
.preview-video-complete span { display: grid; width: 18px; height: 18px; place-items: center; border-radius: 50%; color: #fff; background: #22a77e; }
.preview-video-replace { display: block; margin: 4px auto 0; padding: 1px 5px; color: var(--muted); background: transparent; font-size: 11px; }
.preview-video-record:hover, .preview-video-complete:hover, .preview-video-replace:hover { filter: brightness(.96); }
@media (max-width: 720px) { .preview-recorder { grid-template-columns: 1fr; } .preview-recorder video { grid-row: auto; } }
.textbook-table-summary { display: flex; align-items: baseline; width: 100%; margin: 8px 0 6px; gap: 8px; font-size: 13px; }
#confirmed-mistake-save-status { color: var(--pink-strong); font-size: 13px; }
#confirmed-mistake-save-status:empty { display: none; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.math-fraction { display: inline-grid; grid-template-rows: auto auto; align-items: center; justify-items: center; min-width: 1.3em; margin: 0 .12em; vertical-align: middle; color: inherit; font-size: .95em; line-height: 1.05; }
.math-numerator { width: 100%; padding: 0 .12em .08em; text-align: center; border-bottom: 1.5px solid currentColor; }
.math-denominator { padding: .08em .12em 0; text-align: center; }
.math-blank { display: inline-flex; align-items: center; justify-content: center; width: 1.05em; height: 1.05em; margin: 0 .08em; vertical-align: -.08em; font-family: Arial, sans-serif; font-size: 1.08em; line-height: 1; }

.confirmed-exercise-card {
  overflow: hidden;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  background: #fff;
}

.confirmed-exercise-heading {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  border-bottom: 1px solid #edf2f7;
  background: #f8fafc;
}

.confirmed-exercise-heading .exercise-number {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: #2563eb;
  font-weight: 700;
}

.confirmed-exercise-heading div {
  display: grid;
  gap: 3px;
}

.confirmed-exercise-heading small {
  color: #15803d;
}

.confirmed-exercise-content {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, .9fr);
  gap: 22px;
  padding: 18px;
}

.confirmed-question-pane img {
  display: block;
  width: 100%;
  max-height: 180px;
  object-fit: contain;
  object-position: left center;
  border: 1px solid #edf2f7;
  border-radius: 10px;
  background: #fff;
}

.confirmed-answer {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: 10px;
  background: #ecfdf5;
}

.confirmed-answer span {
  color: #047857;
  font-size: 13px;
}

.confirmed-solution-pane h4 {
  margin: 0 0 8px;
}

.confirmed-solution-pane ol {
  margin: 0 0 18px;
  padding-left: 22px;
}

.confirmed-solution-pane li + li {
  margin-top: 7px;
}

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

.confirmed-animation-player {
  margin-bottom: 14px;
  overflow: hidden;
  border: 1px solid #bfdbfe;
  border-radius: 12px;
  background: #0f172a;
}

.animation-stage {
  position: relative;
  display: grid;
  min-height: 170px;
  padding: 28px 24px 20px;
  place-content: center;
  text-align: center;
  color: #fff;
  background: radial-gradient(circle at 50% 20%, #1d4ed8 0, #172554 48%, #0f172a 100%);
}

.animation-scene-label {
  position: absolute;
  top: 12px;
  left: 14px;
  color: #bfdbfe;
  font-size: 12px;
}

.animation-visual {
  position: relative;
  z-index: 1;
  font-size: 16px;
  line-height: 1.6;
}

.animation-subtitle {
  position: relative;
  z-index: 1;
  margin: 10px 0 0;
  color: #dbeafe;
  font-size: 13px;
}

.animation-orbit {
  position: absolute;
  inset: 22px 18%;
  border: 1px dashed rgba(147, 197, 253, .45);
  border-radius: 50%;
  animation: animation-spin 12s linear infinite;
}

.animation-orbit span {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #60a5fa;
  box-shadow: 0 0 14px #60a5fa;
}

.animation-orbit span:nth-child(1) { top: -4px; left: 48%; }
.animation-orbit span:nth-child(2) { right: 8%; bottom: 12%; }
.animation-orbit span:nth-child(3) { bottom: 12%; left: 8%; }

.animation-progress {
  position: absolute;
  right: 16px;
  bottom: 10px;
  left: 16px;
  height: 3px;
  overflow: hidden;
  border-radius: 3px;
  background: rgba(255, 255, 255, .2);
}

.animation-progress i {
  display: block;
  height: 100%;
  background: #60a5fa;
  transition: width .35s ease;
}

.animation-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 10px;
  background: #fff;
}

.animation-controls button {
  border: 0;
  border-radius: 9px;
  cursor: pointer;
}

.animation-play {
  min-width: 120px;
  padding: 9px 16px;
  color: #fff;
  background: #2563eb;
  font-weight: 700;
}

.animation-step {
  width: 36px;
  height: 36px;
  color: #1d4ed8;
  background: #eff6ff;
  font-size: 24px;
}

.scene-pulse .animation-visual {
  animation: scene-enter .45s ease both;
}

@keyframes scene-enter {
  from { opacity: 0; transform: translateY(8px) scale(.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes animation-spin {
  to { transform: rotate(360deg); }
}

.storyboard-item {
  display: flex;
  gap: 10px;
  padding: 10px;
  border-radius: 10px;
  background: #eff6ff;
}

.storyboard-item > span {
  display: grid;
  flex: 0 0 24px;
  height: 24px;
  place-items: center;
  border-radius: 50%;
  color: #1d4ed8;
  background: #dbeafe;
  font-weight: 700;
}

.storyboard-item p {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 820px) {
  .confirmed-exercise-content {
    grid-template-columns: 1fr;
  }
}

.report-grid > div {
  padding: 18px;
  border-radius: 8px;
  background: #f6fbf8;
}

.report-num {
  display: block;
  color: var(--pink-strong);
  font-size: 34px;
  font-weight: 800;
}

.scheduled-task-card { margin-top: 18px; padding: 20px; border: 1px solid #dbe7e1; border-radius: 14px; background: #fbfefc; }
.scheduled-task-title { display: flex; align-items: center; gap: 12px; }
.scheduled-task-title > div { flex: 1; }
.scheduled-task-title p, .scheduled-task-message { margin: 4px 0 0; color: var(--muted); }
.task-state-dot { width: 12px; height: 12px; border-radius: 50%; background: #cbd5e1; }
.task-state-dot.active { background: #22c55e; box-shadow: 0 0 0 5px rgba(34, 197, 94, .13); }
.scheduled-task-metrics { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin-top: 20px; }
.scheduled-task-metrics > div { padding: 14px; border-radius: 10px; background: #f1f7f4; }
.scheduled-task-metrics span { display: block; color: var(--muted); font-size: 12px; }
.scheduled-task-metrics strong { display: block; margin-top: 6px; font-size: 16px; }
.task-progress { height: 7px; margin-top: 18px; overflow: hidden; border-radius: 7px; background: #e2e8f0; }
.task-progress i { display: block; width: 0; height: 100%; border-radius: inherit; background: #22c55e; transition: width .3s ease; }
.scheduled-current-task { margin-top: 18px; padding: 10px 12px; border-radius: 9px; color: #166534; background: #ecfdf3; font-weight: 700; }
.task-progress-labels { display: flex; justify-content: space-between; margin-top: 7px; color: var(--muted); font-size: 13px; }
.task-progress-labels strong { color: #15803d; }
.scheduled-task-actions { display: flex; gap: 10px; margin-top: 18px; }
.pet-vocabulary-learning-view { min-width: 0; }
.pet-vocab-hero { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-bottom: 16px; padding: 18px 20px; border: 1px solid #dbe6f5; border-radius: 14px; background: linear-gradient(125deg, #fff 0%, #eef5ff 62%, #fff1f7 100%); }
.pet-vocab-hero h3 { margin: 3px 0 5px; font-size: 24px; }
.pet-vocab-hero p { margin: 0; color: var(--muted); }
.pet-vocab-hero .eyebrow { color: #315fd6; font-size: 11px; letter-spacing: .12em; font-weight: 800; }
.pet-vocab-hero-flow { display: flex; align-items: center; gap: 8px; color: #315fd6; font-size: 12px; font-weight: 750; white-space: nowrap; }
.pet-vocab-hero-flow span { padding: 7px 9px; border: 1px solid #cbd9eb; border-radius: 999px; background: rgba(255,255,255,.82); }
.pet-vocab-learning-panel { overflow: hidden; background: linear-gradient(145deg, #fff 0%, #f4f8ff 100%); }
.pet-vocab-learning-panel > .pet-vocab-card { margin-top: 0; }
.pet-vocab-toolbar { display: grid; grid-template-columns: repeat(5, minmax(130px, 1fr)); align-items: end; gap: 12px; padding: 16px; border: 1px solid #dbe6f5; border-radius: 14px; background: rgba(255,255,255,.86); }
.pet-vocab-toolbar label { min-width: 0; display: grid; gap: 6px; color: var(--muted); font-size: 12px; font-weight: 700; }
.pet-vocab-toolbar select, .pet-vocab-toolbar input[type="number"], .pet-vocab-response input { width: 100%; min-width: 0; min-height: 42px; box-sizing: border-box; border: 1px solid #cbd9eb; border-radius: 9px; background: #fff; padding: 8px 10px; color: var(--text); }
.pet-vocab-toolbar .confirmed-mistake-choice { display: flex; align-items: center; min-height: 42px; }
.pet-vocab-library-summary { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 14px; }
.pet-vocab-library-card { display: grid; grid-template-columns: 1fr auto; gap: 4px 10px; padding: 13px; border: 1px solid #dce5f1; border-radius: 12px; background: #fff; }
.pet-vocab-library-card.active { border-color: #4f7cff; box-shadow: 0 0 0 2px rgba(79,124,255,.12); }
.pet-vocab-library-card span { color: #315fd6; font-weight: 800; }
.pet-vocab-library-card small, .pet-vocab-library-card p { grid-column: 1 / -1; margin: 0; color: var(--muted); }
.pet-vocab-session-summary { margin-top: 14px; }
.pet-vocab-card { position: relative; min-height: 290px; display: grid; align-content: center; justify-items: center; gap: 16px; margin-top: 14px; padding: 28px; border: 1px solid #dbe6f5; border-radius: 18px; background: #fff; text-align: center; box-shadow: 0 12px 32px rgba(51,82,133,.08); }
#pet-learning-card.pet-vocab-card:not(.pet-vocab-card-maximized) { padding: 14px 28px; }
.pet-vocab-card-head { width: 100%; display: flex; justify-content: space-between; color: var(--muted); font-size: 13px; }
.pet-learning-card-toolbar { position: relative; width: 100%; min-height: 42px; display: flex; align-items: center; text-align: left; }
.pet-learning-card-meta { display: grid; gap: 2px; color: var(--muted); font-size: 12px; }
.pet-learning-card-meta strong { color: var(--text); font-size: 13px; }
.pet-learning-history-nav { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); display: inline-flex; align-items: center; gap: clamp(18px, 4vw, 48px); white-space: nowrap; }
.pet-learning-history-nav button { border: 0; background: transparent; box-shadow: none; color: #315fd6; cursor: pointer; font-weight: 800; }
.pet-learning-history-nav button:disabled { border: 0; background: transparent; box-shadow: none; color: #a5afbf; cursor: not-allowed; }
.pet-learning-history-nav span { color: var(--muted); font-size: 12px; font-weight: 750; }
.pet-learning-card-head-actions { margin-left: auto; }
.pet-learning-maximize-button { min-height: 34px; padding: 6px 10px; border: 1px solid #cbd9eb; border-radius: 8px; background: #fff; color: #315fd6; cursor: pointer; font-weight: 750; white-space: nowrap; }
.pet-vocab-card-head .pet-learning-maximize-button { margin-left: auto; }
.pet-testing-lock-badge { margin-left: auto; padding: 6px 10px; border: 1px solid #b8d5c8; border-radius: 999px; background: #edf9f3; color: #08785c; font-size: 12px; font-weight: 800; white-space: nowrap; }
.pet-test-exit-button { flex: 0 0 auto; margin-left: 8px; color: #a23a32; white-space: nowrap; }
.pet-test-feedback-actions { width: 100%; display: flex; justify-content: flex-end; }
.pet-learning-focus-open { overflow: hidden; }
.pet-testing-lock-open .sidebar, .pet-testing-lock-open .topbar, .pet-testing-lock-open #pet-learning-summary, .pet-testing-lock-open .pet-learning-wrong-toolbar, .pet-testing-lock-open #pet-eight-day-task, .pet-testing-lock-open #pet-learning-wrong-list { display: none !important; }
.pet-testing-locked .pet-learning-maximize-button { display: none !important; }
.pet-vocab-card.pet-vocab-card-maximized { position: fixed; inset: 0; z-index: 1600; width: auto; height: auto; max-width: none; min-height: 100dvh; align-content: start; margin: 0; padding: clamp(20px, 4vw, 54px); overflow-y: auto; border: 0; border-radius: 0; background: #fff; box-shadow: none; }
#pet-learning-card.pet-vocab-card.pet-vocab-card-maximized { padding-block: clamp(10px, 2vw, 27px); }
.pet-vocab-card-maximized .pet-flow-word-details { margin: auto; }
.pet-vocab-card-maximized .pet-flow-main-word { font-size: clamp(52px, 8vw, 92px); }
.pet-vocab-card-maximized .pet-learning-core-grid, .pet-vocab-card-maximized .pet-flow-content-grid { max-width: 980px; }
.pet-vocab-speaker { border: 0; background: transparent; color: #244aaf; font-size: 28px; font-weight: 800; cursor: pointer; }
.pet-vocab-speaker.speaking { color: #08785c; }
.pet-vocab-speaker:disabled { cursor: wait; opacity: .78; }
.pet-vocab-prompt { font-size: clamp(28px, 4vw, 46px); font-weight: 850; color: #17213a; }
.pet-vocab-response { width: min(440px, 100%); display: grid; gap: 8px; color: var(--muted); font-size: 13px; text-align: left; }
.pet-vocab-response input { font-size: 20px; text-align: center; }
.pet-vocab-answer { margin-top: 18px; padding: 16px 20px; border-radius: 12px; background: #f3f7ff; }
.pet-vocab-answer > strong { display: block; font-size: 26px; color: #244aaf; }
.pet-vocab-answer p { margin: 7px 0; }
.pet-vocab-meaning { color: #08785c; font-size: 20px; font-weight: 750; }
.pet-vocab-grades { display: flex; flex-wrap: wrap; justify-content: center; gap: 9px; margin-top: 14px; }
.pet-vocab-grades .danger { border-color: #efb0b0; color: #bd2727; }
.pet-vocab-grades .success { border-color: #9bd4bd; color: #08785c; }
.pet-vocab-complete strong { font-size: 28px; color: #08785c; }
.pet-vocab-wrong-list { margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--line); }
.pet-vocab-wrong-list article { display: grid; grid-template-columns: minmax(130px, 1fr) 2fr auto; gap: 12px; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.pet-vocab-wrong-list article span, .pet-vocab-wrong-list article small { color: var(--muted); }
.pet-vocab-entry-panel { border-color: #cfdcf0; background: linear-gradient(130deg, #fff, #f4f8ff); }
.pet-vocab-entry-summary { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 10px; }
.pet-vocab-entry-summary > div { min-width: 0; padding: 12px 14px; border-radius: 10px; background: #fff; }
.pet-vocab-entry-summary span { display: block; margin-bottom: 5px; color: var(--muted); font-size: 12px; }
.pet-vocab-entry-summary strong { display: block; overflow-wrap: anywhere; font-size: 16px; }
#pet-learning-status.failed { color: #bd2727; }
.pet-vocab-learning-panel .scheduled-task-actions { flex-wrap: wrap; align-items: center; }
.pet-vocab-learning-panel .pet-learning-wrong-toolbar { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 12px; }
.pet-created-task-switcher { min-width: 0; height: 38px; display: flex; align-items: center; gap: 8px; overflow-x: auto; overflow-y: hidden; overscroll-behavior-inline: contain; padding: 0 1px; scrollbar-width: thin; }
.pet-learning-wrong-toolbar > button, .pet-created-task { box-sizing: border-box; height: 38px; min-height: 38px; max-height: 38px; margin: 0; border-radius: 10px; padding-block: 0; font-size: 12px; line-height: 1; }
.pet-learning-wrong-toolbar > button { display: inline-flex; align-items: center; justify-content: center; font-weight: 750; }
.pet-created-task { flex: 0 0 auto; display: inline-flex; align-items: center; justify-content: center; gap: 7px; border: 1px solid #cbd8e9; padding-inline: 10px; background: #f8fafc; color: #34445c; cursor: pointer; white-space: nowrap; }
.pet-created-task:hover { border-color: #8ea9dd; background: #f1f5ff; }
.pet-created-task.active { border-color: #4f7cff; background: #edf3ff; color: #244fae; box-shadow: inset 0 0 0 1px rgba(79,124,255,.14); }
.pet-created-task span { max-width: 180px; overflow: hidden; text-overflow: ellipsis; font-size: 12px; line-height: 1; font-weight: 800; }
.pet-created-task small { color: #71809a; font-size: 12px; line-height: 1; font-weight: 750; }
.pet-created-task.active small { color: #4168bf; }
.pet-learning-wrong-toolbar [data-action="show-pet-wrong"] { min-width: 126px; margin-top: 0; white-space: nowrap; }
.pet-learning-wrong-toolbar [data-action="open-pet-practice-test"] { min-width: 72px; margin-top: 0; white-space: nowrap; }
.pet-learning-wrong-toolbar [data-action="open-pet-relearn"] { min-width: 72px; margin-top: 0; white-space: nowrap; }
.pet-repeat-action { gap: 5px; }
.pet-repeat-action-mark { width: 16px; height: 16px; display: inline-grid; place-items: center; border-radius: 50%; background: #e8efff; color: #315fd6; font-size: 12px; line-height: 1; }
.pet-toolbar-label-short { display: none; }
.pet-task-settings-toggle { min-width: 88px; margin-top: 0; white-space: nowrap; }
.pet-task-settings-toggle.active { border-color: #4f7cff; background: #edf3ff; color: #244fae; }
.pet-learning-wrong-toolbar #pet-learning-status { min-width: 0; line-height: 1.45; overflow-wrap: anywhere; }
.pet-eight-day-task-section { margin-top: 14px; padding-top: 12px; border-top: 1px solid #dbe6f5; }
.pet-eight-day-task-section[hidden] { display: none; }
.pet-eight-day-progress { display: grid; grid-template-columns: repeat(8, minmax(70px, 1fr)); gap: 8px; margin: 10px 0 16px; overflow-x: auto; padding-bottom: 4px; }
.pet-eight-day-progress.pet-topic-progress { grid-template-columns: repeat(auto-fit, minmax(118px, 1fr)); overflow-x: visible; }
.pet-day-step { min-width: 70px; display: grid; justify-items: center; gap: 3px; padding: 10px 6px; border: 1px solid #d9e2ef; border-radius: 12px; background: #f7f9fc; color: #7a879c; }
.pet-topic-step { min-width: 0; align-content: start; }
.pet-topic-step.available { border-color: #cbd8e9; background: #fff; color: #34445c; }
.pet-topic-start { min-height: 26px; margin-top: 4px; padding: 4px 12px; border: 1px solid #8ea9dd; border-radius: 999px; background: #edf3ff; color: #315fd6; cursor: pointer; font-size: 11px; font-weight: 800; }
.pet-topic-start:hover { border-color: #4f7cff; background: #dfe9ff; }
.pet-topic-start:disabled { border-color: #d7dfeb; background: #f2f4f7; color: #9aa5b5; cursor: not-allowed; }
.pet-day-step > span { width: 26px; height: 26px; display: grid; place-items: center; border-radius: 50%; background: #e7ebf2; font-size: 12px; font-weight: 850; }
.pet-day-step strong { font-size: 13px; }
.pet-day-step small { font-size: 11px; }
.pet-day-step.active { border-color: #4f7cff; background: #eff4ff; color: #244aaf; box-shadow: 0 0 0 2px rgba(79,124,255,.1); }
.pet-day-step.active > span { background: #4f7cff; color: #fff; }
.pet-day-step.completed { border-color: #a8dcca; background: #effbf7; color: #08785c; }
.pet-day-step.completed > span { background: #19a579; color: #fff; }
.pet-day-repeat-actions { display: flex; align-items: center; justify-content: center; gap: 4px; margin-top: 3px; }
.pet-day-repeat-actions button { min-height: 20px; padding: 2px 5px; border: 1px solid #9fd6c4; border-radius: 999px; background: #fff; color: #08785c; cursor: pointer; font-size: 9px; line-height: 1; font-weight: 800; }
.pet-day-repeat-actions button:hover { border-color: #19a579; background: #e3f8f0; }
.pet-day-repeat-actions button:focus-visible { outline: 2px solid rgba(25,165,121,.28); outline-offset: 1px; }
.pet-day-step.active .pet-day-repeat-actions button { border-color: #a9bff2; color: #315fd6; }
.pet-day-step.active .pet-day-repeat-actions button:hover { border-color: #4f7cff; background: #e8efff; }
.pet-eight-day-settings { display: grid; grid-template-columns: 1.4fr 1fr 1fr .8fr auto; align-items: end; gap: 12px; margin-bottom: 14px; padding: 16px; border: 1px solid #cddcf2; border-radius: 14px; background: #f5f8ff; }
.pet-eight-day-settings[hidden] { display: none; }
.pet-eight-day-settings label { min-width: 0; display: grid; gap: 6px; color: var(--muted); font-size: 12px; font-weight: 750; }
.pet-eight-day-settings select, .pet-eight-day-settings input { width: 100%; min-width: 0; min-height: 42px; box-sizing: border-box; border: 1px solid #cbd9eb; border-radius: 9px; padding: 8px 10px; background: #fff; color: var(--text); }
.pet-eight-day-settings .section-note { grid-column: 1 / -1; margin: 0; }
.pet-flow-summary { display: flex; align-items: center; gap: 14px; padding: 12px 15px; border: 1px solid #dce6f4; border-radius: 12px; background: #f7faff; }
.pet-flow-summary strong { color: #244aaf; font-size: 18px; }
.pet-flow-summary span { color: var(--muted); }
.pet-flow-welcome { max-width: 640px; }
.pet-flow-welcome strong { font-size: clamp(22px, 3vw, 30px); color: #244aaf; }
.pet-flow-welcome p { color: var(--muted); line-height: 1.75; }
.pet-flow-word-details { width: min(980px, 100%); display: grid; justify-items: center; gap: 9px; }
.pet-flow-main-word { color: #17213a; font-size: clamp(38px, 6vw, 62px); font-weight: 900; line-height: 1.05; overflow-wrap: anywhere; }
.pet-flow-syllables { padding: 7px 13px; border-radius: 999px; background: #fff4d9; color: #8a5a00; font-size: clamp(19px, 2.4vw, 26px); font-weight: 850; letter-spacing: .04em; overflow-wrap: anywhere; }
.pet-flow-syllables-compact { padding: 4px 11px; font-size: clamp(16px, 2vw, 20px); }
.pet-syllable-part { position: relative; display: inline-block; color: inherit; transform: scale(1); transform-origin: center bottom; transition: color .1s ease, transform .1s ease, text-shadow .1s ease; }
.pet-syllable-part::after { content: ""; position: absolute; left: 5%; right: 5%; bottom: -3px; height: 3px; border-radius: 999px; background: #dc2626; opacity: 0; transform: scaleX(0); transform-origin: left center; }
.pet-syllable-part.active { z-index: 1; color: #d62222; transform: scale(1.12); text-shadow: 0 2px 8px rgba(214,34,34,.18); }
.pet-syllable-part.active::after { opacity: 1; animation: pet-syllable-progress var(--pet-syllable-duration, 420ms) linear forwards; }
.pet-syllable-separator { display: inline-block; margin: 0 .22em; color: #c58c20; }
.pet-syllable-phrase-break { display: inline-block; margin: 0 .42em; color: #b58c43; font-weight: 650; }
@keyframes pet-syllable-progress { to { transform: scaleX(1); } }
.pet-learning-pronunciation-row { width: 100%; min-height: 87px; display: flex; align-items: center; justify-content: center; gap: 10px; }
.pet-flow-word-details-ket .pet-learning-pronunciation-row { min-height: 59px; }
.pet-learning-pronunciation-row .pet-flow-syllables { flex: 0 1 auto; min-width: 0; }
.pet-learning-word-speaker { width: 38px; height: 38px; flex: 0 0 38px; display: grid; place-items: center; margin: 0; padding: 0; border-radius: 50%; font-size: 22px; line-height: 1; }
.pet-learning-word-speaker:hover { background: #edf3ff; }
.pet-learning-word-speaker:focus-visible { outline: 3px solid rgba(79,124,255,.24); outline-offset: 2px; }
.pet-learning-core-grid { width: 100%; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: stretch; gap: 8px; margin-top: 3px; text-align: left; }
.pet-learning-core-grid > * { min-width: 0; }
.pet-visual-memory-card { width: 100%; height: 100%; min-height: 160px; display: grid; grid-template-columns: 110px minmax(0, 1fr); align-items: center; gap: 8px; box-sizing: border-box; padding: 9px; border: 1px solid #dce6f4; border-radius: 13px; background: linear-gradient(135deg, #fff, #f7faff); text-align: left; box-shadow: 0 5px 14px rgba(51,82,133,.06); }
.pet-visual-memory-picture, .pet-visual-memory-symbol { width: 110px; max-width: 100%; aspect-ratio: 1; border-radius: 12px; overflow: hidden; }
.pet-visual-memory-picture { background-image: var(--pet-sprite-image, url("./assets/pet-visual-memory/visual-memory-sprite-v1.webp")); background-repeat: no-repeat; background-size: 300% 200%; background-position: var(--pet-sprite-x, 0%) var(--pet-sprite-y, 0%); box-shadow: inset 0 0 0 1px rgba(72,91,120,.08); }
.pet-visual-memory-symbol { display: grid; place-items: center; background: var(--pet-visual-bg, #f3f6fb); color: var(--pet-visual-accent, #526176); font-size: 38px; line-height: 1; box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--pet-visual-accent, #526176) 18%, transparent); }
.pet-visual-memory-copy { min-width: 0; display: grid; justify-items: start; gap: 3px; }
.pet-visual-memory-copy > span { color: #315fd6; font-size: 11px; font-weight: 900; letter-spacing: .12em; }
.pet-visual-memory-copy > strong { color: #24334e; font-size: clamp(14px, 1.6vw, 16px); line-height: 1.35; }
.pet-visual-memory-copy > small { color: var(--muted); font-size: 14px; line-height: 1.35; overflow-wrap: anywhere; }
.pet-visual-memory-test-cue { display: grid; place-items: center; }
.pet-visual-memory-picture.compact, .pet-visual-memory-symbol.compact { width: 104px; border-radius: 15px; }
.pet-visual-memory-symbol.compact { font-size: 46px; }
.pet-flow-phonetic { color: var(--muted); font-size: 15px; }
.pet-learning-definition-stack { display: grid; grid-template-rows: minmax(0, 1fr) minmax(0, 1fr); gap: 8px; }
.pet-learning-definition { min-width: 0; display: grid; align-content: center; gap: 4px; box-sizing: border-box; padding: clamp(10px, 1.5vw, 15px); border: 1px solid #e0e7f1; border-radius: 13px; background: #f8faff; }
.pet-learning-definition.chinese { border-color: #f0d7df; background: #fff7fa; }
.pet-learning-definition > span { color: #315fd6; font-size: 12px; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.pet-learning-definition.chinese > span { color: #bd4765; }
.pet-learning-definition > p { margin: 0; color: #263551; font-size: clamp(15px, 1.8vw, 18px); font-weight: 720; line-height: 1.4; overflow-wrap: anywhere; }
.pet-learning-definition.chinese > p { color: #7f2943; font-size: clamp(17px, 2.2vw, 23px); font-weight: 850; }
.pet-learning-ket-layout { width: 100%; height: 238px; min-height: 238px; max-height: 238px; display: grid; grid-template-rows: minmax(0, 112px) minmax(0, 55px) minmax(0, 55px); gap: 8px; margin-top: 3px; text-align: left; }
.pet-learning-ket-primary-row { min-width: 0; min-height: 0; display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); align-items: stretch; gap: 8px; }
.pet-learning-ket-primary-row > * { min-width: 0; min-height: 0; height: 100%; }
.pet-learning-ket-layout .pet-visual-memory-card { min-height: 0; grid-template-columns: 88px minmax(0, 1fr); padding: 8px; overflow: hidden; }
.pet-learning-ket-layout .pet-visual-memory-picture, .pet-learning-ket-layout .pet-visual-memory-symbol { width: 88px; }
.pet-learning-ket-layout .pet-visual-memory-copy { max-height: 94px; overflow-y: auto; }
.pet-learning-ket-layout .pet-learning-definition { min-height: 0; align-content: center; padding: 8px 12px; overflow: hidden; }
.pet-learning-ket-layout .pet-learning-definition > p { max-height: 38px; overflow-y: auto; font-size: clamp(14px, 1.55vw, 17px); line-height: 1.3; }
.pet-learning-ket-layout .pet-learning-definition.chinese > p { max-height: 68px; font-size: clamp(16px, 2vw, 21px); }
.pet-learning-ket-layout .pet-learning-definition.example { border-color: #d8e7df; background: #f5fbf8; }
.pet-learning-ket-layout .pet-learning-definition.example > span { color: #16745d; }
.pet-flow-content-grid { width: 100%; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; text-align: left; }
.pet-flow-content-grid article { min-width: 0; padding: 13px 15px; border: 1px solid #e0e7f1; border-radius: 12px; background: #f8faff; }
.pet-flow-content-grid span { color: #315fd6; font-size: 11px; font-weight: 850; text-transform: uppercase; letter-spacing: .08em; }
.pet-flow-content-grid p { margin: 6px 0 0; line-height: 1.55; overflow-wrap: anywhere; }
.pet-learning-extensions { margin-top: 3px; }
.pet-flow-next { min-width: 180px; }
.pet-flow-test-prompt { min-height: 130px; display: grid; align-content: center; justify-items: center; gap: 8px; }
.pet-flow-test-prompt p { margin: 0; color: var(--muted); }
.pet-flow-audio-prompt { padding: 18px 24px; border-radius: 16px; background: #f0f5ff; }
.pet-speech-rhythm { min-height: 20px; display: flex; align-items: center; justify-content: center; gap: 10px; }
.pet-speech-beat { width: 9px; height: 9px; display: block; border-radius: 50%; background: #aeb9ca; box-shadow: 0 0 0 0 rgba(214,34,34,0); transform: scale(1); transition: background .1s ease, transform .1s ease, box-shadow .1s ease; }
.pet-speech-beat.active { background: #d62222; box-shadow: 0 0 0 6px rgba(214,34,34,.12); transform: scale(1.35); }
.pet-test-choice-grid { width: min(720px, 100%); display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.pet-test-choice { min-width: 0; cursor: pointer; text-align: left; }
.pet-test-choice input { position: absolute; opacity: 0; pointer-events: none; }
.pet-test-choice span { min-height: 58px; display: flex; align-items: center; gap: 12px; box-sizing: border-box; padding: 12px 15px; border: 2px solid #dbe5f2; border-radius: 13px; background: #fff; color: #263551; font-size: 17px; font-weight: 750; transition: border-color .15s ease, background .15s ease, box-shadow .15s ease; }
.pet-test-choice b { width: 30px; height: 30px; flex: 0 0 auto; display: grid; place-items: center; border-radius: 50%; background: #edf3ff; color: #315fd6; font-size: 13px; }
.pet-test-choice:hover span { border-color: #9db5ef; background: #f8faff; }
.pet-test-choice input:focus-visible + span { outline: 3px solid rgba(79,124,255,.28); outline-offset: 2px; }
.pet-test-choice input:checked + span { border-color: #4f7cff; background: #eff4ff; box-shadow: 0 0 0 3px rgba(79,124,255,.11); }
.pet-test-choice input:checked + span b { background: #4f7cff; color: #fff; }
.pet-audio-syllable-fill { width: min(720px, 100%); min-height: 70px; display: flex; flex-wrap: nowrap; align-items: center; justify-content: safe center; gap: 3px; padding: 16px; overflow-x: auto; box-sizing: border-box; border-radius: 14px; background: #f7f9fd; }
.pet-audio-syllable-fill .pet-audio-letter { min-width: .62em; color: #17213a; font-size: clamp(28px, 4vw, 40px); font-weight: 900; line-height: 52px; text-align: center; }
.pet-audio-syllable-fill .pet-audio-separator { min-width: 14px; white-space: pre; }
.pet-audio-syllable-fill input { width: clamp(34px, 6vw, 46px); min-height: 52px; padding: 0; box-sizing: border-box; border: 0; border-bottom: 3px solid #6f91dc; border-radius: 6px 6px 2px 2px; background: #fff; color: #17213a; font-size: clamp(24px, 3.5vw, 34px); font-weight: 850; line-height: 1; text-align: center; text-transform: lowercase; }
.pet-audio-syllable-fill input:focus { border-color: #315fd6; outline: 3px solid rgba(79,124,255,.18); }
.pet-flow-feedback { width: min(980px, 100%); display: grid; justify-items: center; gap: 14px; }
.pet-flow-feedback > strong { color: #bd2727; font-size: 21px; }
.pet-flow-feedback > p { margin: 0; color: var(--muted); }
.danger-action { padding: 10px 18px; border: 1px solid #fecaca; border-radius: 9px; color: #b91c1c; background: #fff1f2; cursor: pointer; font-weight: 700; }
.danger-action:disabled { cursor: wait; opacity: .6; }

/* Cambridge B1 topic word test */
.cambridge-word-test-view { max-width: 1240px; margin: 0 auto; }
.cambridge-word-test-intro { margin-bottom: 16px; border-top: 4px solid var(--blue); }
.cambridge-word-test-options { display: flex; align-items: end; flex-wrap: wrap; gap: 12px 20px; padding-top: 14px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.cambridge-word-test-options label { display: grid; gap: 6px; }
.cambridge-word-test-options select { min-width: 142px; }
.cambridge-word-audio-mode { min-height: 40px; display: inline-flex; align-items: center; padding: 0 12px; border-radius: 8px; color: #216b8d; background: #edf8fd; }
#cambridge-word-topic-summary { margin-left: auto; padding-bottom: 11px; }
.cambridge-word-resume { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin: 4px 0 16px; padding: 13px 15px; border: 1px solid #c9dff0; border-radius: 8px; background: #f2f9fd; }
.cambridge-word-resume div { display: grid; gap: 3px; }
.cambridge-word-resume span { color: var(--muted); font-size: 13px; }
.cambridge-word-topic-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.cambridge-word-topic-grid > .empty-state { grid-column: 1 / -1; }
.cambridge-word-topic-card { min-width: 0; padding: 17px; border: 1px solid var(--line); border-radius: 9px; background: #fff; box-shadow: 0 8px 24px rgba(125, 79, 104, .07); }
.cambridge-word-topic-card > div:first-child { display: flex; align-items: center; gap: 9px; min-width: 0; }
.cambridge-word-topic-card > div:first-child span { display: grid; place-items: center; width: 29px; height: 29px; flex: 0 0 auto; border-radius: 50%; color: #247294; background: #e8f6fd; font-size: 11px; font-weight: 800; }
.cambridge-word-topic-card > div:first-child small { color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cambridge-word-topic-card h4 { min-height: 25px; margin: 13px 0 7px; font-size: 17px; }
.cambridge-word-topic-card p { margin: 0 0 10px; font-size: 13px; }
.cambridge-word-topic-card p strong { color: var(--ink); font-size: 19px; }
.cambridge-word-topic-progress { height: 5px; overflow: hidden; border-radius: 99px; background: #f0e9ed; }
.cambridge-word-topic-progress i { display: block; height: 100%; border-radius: inherit; background: var(--mint); }
.cambridge-word-topic-actions { display: grid; grid-template-columns: 1fr 1fr auto; gap: 7px; margin-top: 14px; }
.cambridge-word-topic-actions button { min-width: 0; height: 34px; margin: 0; padding: 0 9px; font-size: 12px; white-space: nowrap; }
.cambridge-word-wrong-panel { margin-top: 16px; }
.cambridge-word-wrong-list { display: grid; gap: 8px; }
.cambridge-word-wrong-list article { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 12px 14px; border: 1px solid #f2c8d6; border-radius: 8px; background: #fff8fa; }
.cambridge-word-wrong-list article.mastered { border-color: #bee4d6; background: #f4fbf8; }
.cambridge-word-wrong-list article div { display: grid; grid-template-columns: minmax(100px, auto) minmax(0, 1fr); gap: 3px 14px; }
.cambridge-word-wrong-list article span { color: var(--ink); }
.cambridge-word-wrong-list article small { grid-column: 1 / -1; color: var(--muted); }
.cambridge-word-wrong-list article em { flex: 0 0 auto; color: #b73862; font-size: 12px; font-style: normal; font-weight: 700; }
.cambridge-word-wrong-list article.mastered em { color: #16745d; }
.cambridge-word-session-screen { max-width: 880px; margin: 0 auto; }
.cambridge-word-session-head { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 12px; }
.cambridge-word-session-head > div { display: flex; align-items: center; justify-content: center; gap: 12px; }
.cambridge-word-session-head > div span { color: var(--muted); font-size: 13px; }
.cambridge-word-session-head > button:last-child { justify-self: end; }
.cambridge-word-progress-track { height: 7px; margin: 14px 0 18px; overflow: hidden; border-radius: 99px; background: #f0e8ec; }
.cambridge-word-progress-track i { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--pink), var(--violet)); transition: width .25s ease; }
.cambridge-word-test-card { min-height: 470px; display: grid; align-content: center; justify-items: center; gap: 12px; padding: 36px; border: 1px solid var(--line); border-radius: 14px; background: radial-gradient(circle at 50% 22%, #fff4f8, #fff 48%); box-shadow: var(--shadow); text-align: center; }
.cambridge-word-question-meta { width: 100%; display: flex; justify-content: space-between; color: var(--muted); font-size: 13px; }
.cambridge-word-speaker { width: 54px; height: 54px; margin-top: 12px; border: 0; border-radius: 50%; color: #216b8d; background: #e5f4fc; font-size: 24px; }
.cambridge-word-speaker.speaking { box-shadow: 0 0 0 7px rgba(167, 216, 244, .32); animation: cambridge-speaker-pulse 1s ease-in-out infinite; }
@keyframes cambridge-speaker-pulse { 50% { transform: scale(1.06); } }
.cambridge-word-question { max-width: 100%; color: #2f2740; font-size: clamp(40px, 7vw, 66px); line-height: 1.12; overflow-wrap: anywhere; }
.cambridge-word-pos { margin: -4px 0 10px; color: var(--muted); font-size: 14px; }
.cambridge-word-answer-controls { display: flex; gap: 10px; }
.cambridge-word-answer-controls .secondary-action { margin-top: 0; }
.cambridge-record-button { min-width: 150px; }
.cambridge-record-button.recording { border-color: #a6264f; background: #c93663; box-shadow: 0 0 0 6px rgba(201, 54, 99, .12); animation: cambridge-record-pulse 1s ease-in-out infinite; }
@keyframes cambridge-record-pulse { 50% { box-shadow: 0 0 0 10px rgba(201, 54, 99, .06); } }
.cambridge-word-manual { width: min(480px, 100%); display: grid; grid-template-columns: 1fr auto; gap: 8px; margin-top: 8px; }
.cambridge-word-manual input { min-width: 0; }
.cambridge-word-test-status { min-height: 22px; margin: 12px 0 0; color: var(--muted); text-align: center; }
.cambridge-word-test-status.error { color: var(--danger); }
.cambridge-word-feedback, .cambridge-word-complete { width: min(650px, 100%); display: grid; justify-items: center; gap: 12px; }
.cambridge-word-feedback > span, .cambridge-word-complete > span { display: grid; place-items: center; width: 66px; height: 66px; border-radius: 50%; color: #fff; background: #20936f; font-size: 34px; font-weight: 800; }
.cambridge-word-feedback.wrong > span { background: var(--danger); }
.cambridge-word-feedback > strong { font-size: clamp(21px, 3.2vw, 30px); line-height: 1.45; }
.cambridge-word-feedback p, .cambridge-word-feedback small, .cambridge-word-complete p { margin: 0; color: var(--muted); }
.cambridge-word-result-grid { width: 100%; display: grid; grid-template-columns: repeat(4, 1fr); gap: 9px; }
.cambridge-word-result-grid div { padding: 14px 8px; border-radius: 8px; background: #faf6f8; }
.cambridge-word-result-grid strong, .cambridge-word-result-grid small { display: block; }
.cambridge-word-result-grid strong { font-size: 24px; }
.cambridge-word-result-grid small { margin-top: 4px; color: var(--muted); }
.cambridge-word-complete h3 { margin: 0; }
.cambridge-word-complete-actions { display: flex; gap: 9px; }
.cambridge-word-complete-actions .secondary-action { margin-top: 0; }

@media (prefers-reduced-motion: reduce) {
  .pet-syllable-part, .pet-speech-beat { transition: none; }
  .pet-syllable-part.active::after { animation: none; transform: scaleX(1); }
  .cambridge-word-speaker.speaking { animation: none; }
}

@media (max-width: 920px) {
  .cambridge-word-topic-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pet-vocab-hero { align-items: flex-start; flex-direction: column; }
  .pet-vocab-hero-flow { width: 100%; overflow-x: auto; padding-bottom: 3px; }
  .pet-vocab-toolbar { grid-template-columns: 1fr 1fr; }
  .pet-vocab-library-summary { grid-template-columns: 1fr; }
  .pet-vocab-entry-summary { grid-template-columns: 1fr 1fr; }
  .pet-vocab-wrong-list article { grid-template-columns: 1fr; gap: 4px; }
  .pet-eight-day-settings { grid-template-columns: 1fr 1fr; }
  .pet-eight-day-settings .primary-action { min-height: 42px; }
  .pet-test-choice-grid { grid-template-columns: 1fr; }
  .pet-visual-memory-card { grid-template-columns: 96px minmax(0, 1fr); }
  .pet-visual-memory-picture, .pet-visual-memory-symbol { width: 96px; }
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
    overflow: visible;
  }

  .nav-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    overflow: visible;
    padding-right: 0;
  }

  .nav-section-label { grid-column: 1 / -1; }

  .subject-switcher { width: 100%; overflow-x: auto; }
  .subject-switcher button { flex: 1 0 auto; }

  .topbar { gap: 16px; padding-bottom: 4px; }
  .top-actions { align-items: center; flex-direction: row; }
  .top-actions .subject-switcher { position: static; margin-right: auto; transform: none; }

  .stats-grid,
  .dashboard-grid,
  .split-layout,
  .practice-grid,
  .model-grid,
  .library-grid,
  .report-grid {
    grid-template-columns: 1fr;
  }

  .scheduled-task-metrics { grid-template-columns: 1fr 1fr; }
  .model-usage-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .model-integration-item { grid-template-columns: 1fr auto; }
  .model-integration-item dl { grid-column: 1 / -1; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .model-usage-filter { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .model-budget-form { grid-template-columns: 1fr 1fr; }
  .model-budget-actions { grid-column: 1 / -1; }
  .model-usage-audit article { grid-template-columns: 1fr auto; }
  .model-usage-audit article p { grid-column: 1 / -1; }
  .daily-checkin-grid { grid-template-columns: 1fr; }
  .daily-recognition-card { align-items: stretch; flex-direction: column; }
  .daily-recognition-card button { align-self: flex-start; }
  .daily-detection-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .recitation-layout { grid-template-columns: 1fr; }
  .recitation-left-workspace, .recitation-checkin-workspace { height: auto; min-height: 0; overflow-y: visible; scrollbar-gutter: auto; }
  .recitation-plan-summary { grid-template-columns: 1fr 1fr; }
  .recitation-history-item { grid-template-columns: 1fr auto; }
  .recitation-history-item > button, .recitation-history-item > small { grid-column: 1 / -1; justify-self: start; }

  .table-row {
    grid-template-columns: 1fr;
  }
  .mistake-table .table-row { grid-template-columns: var(--mistake-grid-columns, 58px 132px 64px 280px 190px 140px 100px 160px 120px 126px); }
  .mistake-filter-bar { align-items: stretch; flex-direction: column; }

  .table-head {
    display: none;
  }

  .ai-explain-field,
  .lecture-toolbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .diagram-stage,
  .compare-stage {
    grid-template-columns: 1fr;
  }

  .fraction-line {
    min-width: 0;
  }

  .message {
    max-width: 100%;
  }

  .chat-input {
    grid-template-columns: 1fr 1fr;
  }

  .chat-input input {
    grid-column: 1 / -1;
  }
}

@media (max-width: 599px) {
  .cambridge-word-test-intro .panel-head { align-items: flex-start; }
  .cambridge-word-test-options { align-items: stretch; }
  #cambridge-word-topic-summary { width: 100%; margin: 0; padding: 0; }
  .cambridge-word-resume { align-items: stretch; flex-direction: column; }
  .cambridge-word-topic-grid { grid-template-columns: 1fr; }
  .cambridge-word-topic-actions { grid-template-columns: 1fr 1fr; }
  .cambridge-word-topic-actions .text-button { grid-column: 1 / -1; }
  .cambridge-word-session-head { grid-template-columns: 1fr auto; }
  .cambridge-word-session-head > div { grid-column: 1 / -1; grid-row: 2; }
  .cambridge-word-test-card { min-height: 410px; padding: 25px 16px; }
  .cambridge-word-question-meta { align-items: flex-start; flex-direction: column; gap: 4px; }
  .cambridge-word-answer-controls, .cambridge-word-complete-actions { width: 100%; flex-direction: column; }
  .cambridge-word-answer-controls button, .cambridge-word-complete-actions button { width: 100%; }
  .cambridge-word-manual { grid-template-columns: 1fr; }
  .cambridge-word-result-grid { grid-template-columns: 1fr 1fr; }
  .cambridge-word-wrong-list article { align-items: flex-start; }
  .cambridge-word-wrong-list article div { grid-template-columns: 1fr; }
  .cambridge-word-wrong-list article small { grid-column: 1; }
  .pet-vocab-learning-panel .pet-learning-wrong-toolbar { grid-template-columns: auto minmax(0, 1fr) auto; gap: 6px; }
  .pet-learning-wrong-toolbar [data-action="show-pet-wrong"] { min-width: 64px; padding-inline: 7px; }
  .pet-task-settings-toggle { min-width: 56px; padding-inline: 7px; }
  .pet-toolbar-label-full { display: none; }
  .pet-toolbar-label-short { display: inline; }
  .pet-created-task { padding-inline: 8px; }
  .pet-created-task span { max-width: 120px; }
  .pet-task-settings-toggle { min-width: 76px; padding-inline: 8px; }
  .pet-learning-wrong-toolbar #pet-learning-status { grid-column: 1 / -1; }
  .pet-eight-day-settings { grid-template-columns: 1fr; }
  .pet-learning-core-grid { grid-template-columns: 1fr; }
  .pet-visual-memory-card { min-height: 0; grid-template-columns: 76px minmax(0, 1fr); grid-template-rows: auto; gap: 8px; padding: 8px; text-align: left; }
  .pet-visual-memory-card .pet-visual-memory-picture, .pet-visual-memory-card .pet-visual-memory-symbol { width: 76px; border-radius: 10px; }
  .pet-visual-memory-card .pet-visual-memory-symbol { font-size: 32px; }
  .pet-visual-memory-copy { justify-items: start; }
  .pet-visual-memory-copy > small { font-size: 13px; }
  .pet-learning-definition-stack { gap: 8px; }
  .pet-learning-definition { min-height: 72px; padding: 10px; }
  .pet-learning-ket-primary-row { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); }
  .pet-learning-ket-layout .pet-visual-memory-card { min-height: 0; grid-template-columns: 64px minmax(0, 1fr); }
  .pet-learning-ket-layout .pet-visual-memory-picture, .pet-learning-ket-layout .pet-visual-memory-symbol { width: 64px; }
  .pet-learning-ket-layout .pet-learning-definition { min-height: 0; padding: 7px 9px; }
  .pet-flow-content-grid { grid-template-columns: 1fr; }
  .pet-vocab-card { min-height: 340px; padding: 20px 14px; }
  #pet-learning-card.pet-vocab-card:not(.pet-vocab-card-maximized) { padding: 10px 14px; }
  .pet-vocab-card.pet-vocab-card-maximized { min-height: 100dvh; padding: 16px 14px 28px; }
  #pet-learning-card.pet-vocab-card.pet-vocab-card-maximized { padding: 8px 14px 14px; }
  .pet-learning-card-toolbar { display: grid; grid-template-columns: 1fr auto; gap: 10px; }
  .pet-learning-history-nav { position: static; grid-column: 1 / -1; grid-row: 2; justify-content: space-between; transform: none; }
  .pet-learning-card-head-actions { grid-column: 2; grid-row: 1; }
  .pet-learning-history-nav button { min-height: 36px; padding: 6px 4px; }
  .pet-vocab-card-head { align-items: center; flex-wrap: wrap; gap: 8px; }
  .pet-flow-summary { align-items: flex-start; flex-direction: column; gap: 4px; }
  .pet-relearn-shell { padding: 12px; }
  .pet-relearn-card { min-height: 360px; max-height: calc(100dvh - 180px); padding: 10px; }
  .pet-relearn-head { display: grid; grid-template-columns: 1fr auto; gap: 10px; }
  .pet-relearn-navigation { position: static; grid-column: 1 / -1; grid-row: 2; justify-content: space-between; transform: none; }
}

@media (min-width: 760px) and (max-width: 920px) {
  .recitation-layout { grid-template-columns: minmax(0, 1.36fr) minmax(220px, .64fr); gap: 14px; }
  .recitation-left-workspace, .recitation-checkin-workspace { height: max(318px, calc(100dvh - 178px)); min-height: 0; overflow-y: auto; scrollbar-gutter: stable; }
}

@media (min-width: 600px) and (max-width: 1366px) {
  #chinese-recitation { overflow-x: hidden; }
  #chinese-recitation .recitation-today-plan { overflow-x: hidden; }
  #chinese-recitation .recitation-today-line { gap: clamp(4px, .8vw, 10px); transform-origin: left top; }
  #chinese-recitation .recitation-today-group { gap: clamp(3px, .55vw, 7px); }
  #chinese-recitation .recitation-today-group > span { font-size: clamp(11px, 1.25vw, 14px); }
  #chinese-recitation .recitation-task-numbers { gap: clamp(2px, .4vw, 5px); }
  #chinese-recitation .recitation-task-number { width: clamp(18px, 2vw, 22px); height: clamp(18px, 2vw, 22px); font-size: clamp(9px, 1vw, 11px); }
  #chinese-recitation .recitation-today-actions { gap: clamp(3px, .5vw, 6px); }
  #chinese-recitation .recitation-today-actions > button { height: clamp(21px, 2.35vw, 24px); padding: 0 clamp(4px, .65vw, 8px); font-size: clamp(9px, 1vw, 11px); line-height: clamp(21px, 2.35vw, 24px); }
  #chinese-recitation .recitation-original,
  #chinese-recitation .recitation-meaning,
  #chinese-recitation .recitation-pinyin { max-width: 100%; overflow-wrap: anywhere; }
  #chinese-recitation.recitation-focus-mode { padding: 14px; }
  #chinese-recitation.recitation-focus-mode .recitation-layout { grid-template-columns: minmax(0, 1fr); gap: 14px; min-height: calc(100dvh - 28px); }
}

@media (max-width: 759px) {
  #chinese-recitation.recitation-focus-mode { padding: 12px; }
  #chinese-recitation.recitation-focus-mode .recitation-layout { grid-template-columns: 1fr; gap: 12px; min-height: 0; }
  #chinese-recitation.recitation-focus-mode .recitation-focus-toggle { top: 9px; right: 9px; }
}