:root {
  --green: #174c43;
  --green-hover: #103d35;
  --green-soft: #eaf3ef;
  --green-mid: #4c796d;
  --canvas: #f6f8f9;
  --white: #fff;
  --ink: #202f31;
  --muted: #697777;
  --line: #e2e8e7;
  --blue: #385c8d;
  --blue-soft: #edf3fb;
  --orange: #a66b21;
  --orange-soft: #fcf3e5;
  --red: #b33434;
  --red-soft: #fff0ef;
  --shadow: 0 3px 16px #173a3410;
  --radius: 16px;
  font-family: "Segoe UI", Arial, sans-serif;
  font-synthesis: none;
  color: var(--ink);
  background: var(--canvas);
  line-height: 1.6;
  font-size: 14px;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
}
button,
input,
textarea,
select {
  font: inherit;
}
button,
a,
input,
textarea,
select {
  -webkit-tap-highlight-color: transparent;
}
button,
a {
  touch-action: manipulation;
}
button {
  cursor: pointer;
}
button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}
button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
summary:focus-visible {
  outline: 3px solid #80bcb0;
  outline-offset: 3px;
}
button {
  color: inherit;
}
a {
  color: var(--green);
}
[hidden] {
  display: none !important;
}
h1,
h2,
h3,
p {
  margin: 0;
}
h1,
h2,
h3 {
  line-height: 1.25;
}
h1 {
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -1px;
}
h2 {
  font-size: 17px;
  letter-spacing: -0.3px;
}
h3 {
  font-size: 17px;
}
svg.icon {
  width: 19px;
  height: 19px;
  stroke: currentColor;
  stroke-width: 1.7;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}
.muted {
  color: var(--muted);
}
.small {
  font-size: 12px;
}
.eyebrow {
  font-size: 10px;
  letter-spacing: 1.6px;
  font-weight: 750;
  color: var(--green-mid);
  margin-bottom: 9px;
}
.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;
}
.skip-link {
  position: fixed;
  left: 12px;
  top: -80px;
  padding: 10px;
  background: var(--white);
  z-index: 100;
}
.skip-link:focus {
  top: 10px;
}
.topbar {
  height: 78px;
  display: flex;
  align-items: center;
  gap: 40px;
  justify-content: space-between;
  background: var(--white);
  border-bottom: 1px solid var(--line);
  padding: 0 32px;
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand {
  display: flex;
  gap: 11px;
  align-items: center;
  text-decoration: none;
  color: var(--green);
  font-size: 19px;
  font-weight: 750;
  line-height: 1.2;
  white-space: nowrap;
  letter-spacing: -0.7px;
}
.brand-light {
  font-weight: 400;
}
.brand small {
  display: block;
  font-size: 8px;
  letter-spacing: 2px;
  font-weight: 650;
  color: var(--muted);
  margin-top: 7px;
}
.brand-mark {
  display: flex;
  align-items: center;
  background: var(--green);
  color: var(--white);
  width: 39px;
  height: 39px;
  border-radius: 12px;
  font-size: 30px;
  letter-spacing: -13px;
  padding-left: 6px;
  font-family: Arial, sans-serif;
}
.brand-mark span {
  font-size: 25px;
  margin-top: 7px;
}
.topnav {
  display: flex;
  align-self: stretch;
  gap: 28px;
  margin-left: auto;
  margin-right: auto;
}
.nav-link {
  border: 0;
  border-bottom: 3px solid transparent;
  background: none;
  color: var(--muted);
  padding: 3px 0 0;
  font-weight: 600;
  font-size: 13px;
}
.nav-link.active {
  color: var(--green);
  border-bottom-color: var(--green);
}
.top-actions {
  display: flex;
  gap: 14px;
  align-items: center;
}
.connection {
  font-size: 11px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.connection:before {
  content: "";
  width: 6px;
  height: 6px;
  background: #48866e;
  border-radius: 50%;
}
.connection.offline:before {
  background: var(--orange);
}
.icon-button {
  border: 1px solid var(--line);
  border-radius: 10px;
  width: 35px;
  height: 35px;
  background: var(--white);
  display: inline-flex;
  justify-content: center;
  align-items: center;
  flex-shrink: 0;
}
.icon-button:hover {
  background: var(--canvas);
}
.profile-button {
  border: 0;
  background: none;
  display: flex;
  gap: 9px;
  align-items: center;
  font-size: 12px;
  font-weight: 650;
  max-width: 230px;
}
.profile-button #profile-name {
  max-width: 140px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.avatar {
  border-radius: 50%;
  background: #e9edf8;
  color: #455580;
  width: 31px;
  height: 31px;
  display: grid;
  place-items: center;
  font-weight: 700;
}
.app-layout {
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr);
  max-width: 1680px;
  margin: auto;
  min-height: calc(100vh - 78px);
}
.sidebar {
  background: var(--white);
  padding: 30px 18px 20px;
  border-right: 1px solid var(--line);
  position: sticky;
  top: 78px;
  height: calc(100vh - 78px);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
.sidebar-heading {
  padding: 0 10px 22px;
}
.sidebar-heading h2 {
  font-size: 20px;
  margin-bottom: 5px;
}
.sidebar-heading .eyebrow {
  font-size: 9px;
  margin-bottom: 9px;
}
.search-field {
  display: flex;
  gap: 8px;
  align-items: center;
  background: var(--canvas);
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 8px 11px;
  margin: 0 5px 15px;
  color: var(--muted);
}
.search-field input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  font-size: 12px;
  color: var(--ink);
}
.search-field .icon {
  width: 15px;
  height: 15px;
}
.unit-list {
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.unit-button {
  border: 1px solid transparent;
  background: none;
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 11px 10px;
  border-radius: 10px;
  width: 100%;
  text-align: left;
  line-height: 1.3;
}
.unit-button:hover {
  background: var(--canvas);
}
.unit-button.active {
  background: var(--green-soft);
  border-color: #d7e9e2;
  color: var(--green);
}
.unit-number {
  width: 29px;
  height: 32px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  color: #839190;
  background: var(--canvas);
  border: 1px solid var(--line);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  border-radius: 8px;
}
.unit-button.active .unit-number {
  background: var(--green);
  color: var(--white);
  border-color: var(--green);
}
.unit-button.completed .unit-number {
  color: var(--green);
  background: #dbede3;
}
.unit-copy {
  display: block;
  min-width: 0;
}
.unit-copy small {
  display: block;
  font-size: 9px;
  color: var(--muted);
  margin-bottom: 4px;
}
.unit-copy strong {
  display: block;
  font-size: 11px;
  font-weight: 600;
  overflow-wrap: anywhere;
}
.unit-check {
  margin-left: auto;
  color: var(--green);
  font-size: 12px;
}
.sidebar-bottom {
  margin: 24px 10px 0;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}
.sidebar-progress-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  margin-bottom: 9px;
}
.sidebar-progress-label strong {
  color: var(--green);
}
progress {
  width: 100%;
  height: 6px;
  border: 0;
  border-radius: 10px;
  overflow: hidden;
  background: #e8eeeb;
  accent-color: var(--green);
}
progress::-webkit-progress-bar {
  background: #e8eeeb;
  border-radius: 10px;
}
progress::-webkit-progress-value {
  background: var(--green);
  border-radius: 10px;
}
progress::-moz-progress-bar {
  background: var(--green);
  border-radius: 10px;
}
.sidebar-bottom p {
  font-size: 10px;
  margin-top: 9px;
}
main {
  padding: 35px 38px 0;
  min-width: 0;
  outline: 0;
}
.page-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  margin-bottom: 25px;
}
.page-heading h1 {
  margin-bottom: 10px;
}
.page-heading .muted {
  font-size: 13px;
}
.lesson-intro {
  display: flex;
  align-items: center;
  gap: 13px;
  background: var(--green-soft);
  border: 1px solid #dbe9e1;
  border-radius: 12px;
  padding: 16px 19px;
  margin-bottom: 27px;
}
.intro-icon {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  background: var(--white);
  color: var(--green);
  border-radius: 11px;
  flex-shrink: 0;
}
.intro-icon .icon {
  width: 22px;
  height: 22px;
}
.lesson-intro strong {
  font-size: 13px;
  color: var(--green);
}
.lesson-intro p {
  font-size: 11px;
  color: #52766b;
  margin-top: 3px;
}
.intro-tag {
  margin-left: auto;
  white-space: nowrap;
  flex-shrink: 0;
  font-size: 9px;
  padding: 5px 9px;
  background: #dfece5;
  color: #446b5f;
  border-radius: 5px;
}
.mode-tabs {
  display: flex;
  border-bottom: 1px solid var(--line);
  gap: 8px;
  margin-bottom: 25px;
}
.mode-tabs > button {
  background: none;
  border: 0;
  border-bottom: 3px solid transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 12px 12px 15px;
  font-size: 12px;
  font-weight: 650;
  color: var(--muted);
  margin-bottom: -1px;
  flex: 1;
  white-space: nowrap;
}
.mode-tabs > button[aria-selected="true"] {
  color: var(--green);
  border-bottom-color: var(--green);
}
.step-number {
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #e9eeed;
  color: var(--muted);
  font-size: 10px;
}
.mode-tabs > button[aria-selected="true"] .step-number {
  background: var(--green);
  color: var(--white);
}
.tab-score {
  font-size: 9px;
  padding: 2px 5px;
  border-radius: 4px;
  background: #edf0ef;
  color: var(--muted);
  font-weight: 500;
}
.mode-tabs .icon {
  width: 17px;
  height: 17px;
}
.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 235px;
  gap: 24px;
  align-items: start;
}
.exercise-panel {
  min-width: 0;
  scroll-margin-top: 100px;
}
.exercise-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 17px;
}
.exercise-heading h2 {
  font-size: 16px;
}
.exercise-heading p {
  font-size: 11px;
  color: var(--muted);
  margin-top: 4px;
}
.exercise-count {
  font-size: 10px;
  background: var(--white);
  border: 1px solid var(--line);
  padding: 4px 9px;
  border-radius: 20px;
  white-space: nowrap;
  color: var(--muted);
}
.exercise-picker {
  display: flex;
  gap: 7px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.exercise-picker button {
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: 8px;
  padding: 6px 11px;
  color: var(--muted);
  font-size: 10px;
  display: flex;
  gap: 7px;
  align-items: center;
  min-height: 34px;
}
.exercise-picker button[aria-current="true"] {
  background: var(--green);
  border-color: var(--green);
  color: var(--white);
}
.exercise-picker button .mini-score {
  font-size: 9px;
  opacity: 0.9;
}
.practice-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.card-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding: 18px 23px 0;
}
.card-label .eyebrow {
  margin: 0;
  font-size: 9px;
}
.badge {
  font-size: 10px;
  border-radius: 5px;
  padding: 4px 8px;
  background: var(--canvas);
  color: var(--muted);
  font-weight: 600;
  white-space: nowrap;
}
.badge.success {
  background: var(--green-soft);
  color: var(--green);
}
.badge.warning {
  background: var(--orange-soft);
  color: var(--orange);
}
.phrase-content {
  padding: 24px 25px 21px;
}
.phrase {
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  font-size: 27px;
  line-height: 1.55;
  letter-spacing: -0.55px;
  font-weight: 500;
  color: #183d36;
  overflow-wrap: anywhere;
}
.ipa {
  font-size: 13px;
  line-height: 1.7;
  color: #81908b;
  margin-top: 14px;
  overflow-wrap: anywhere;
}
.meaning {
  font-size: 12px;
  color: var(--muted);
  padding-top: 15px;
  margin-top: 18px;
  border-top: 1px solid #eff2f0;
}
.audio-row {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-wrap: wrap;
  padding: 0 24px 23px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 9px;
  border: 1px solid transparent;
  font-size: 12px;
  font-weight: 650;
  min-height: 39px;
  line-height: 1.5;
  transition:
    background 0.12s,
    color 0.12s;
}
.button .icon {
  width: 16px;
  height: 16px;
}
.primary {
  background: var(--green);
  border-color: var(--green);
  color: var(--white);
}
.primary:hover:not(:disabled) {
  background: var(--green-hover);
}
.secondary {
  background: var(--white);
  color: var(--ink);
  border-color: var(--line);
}
.secondary:hover:not(:disabled) {
  background: var(--canvas);
  border-color: #c4d2ce;
}
.soft {
  background: var(--green-soft);
  color: var(--green);
  border-color: #deebe5;
}
.soft:hover:not(:disabled) {
  background: #dfede5;
}
.danger {
  background: var(--red);
  color: var(--white);
}
.danger-text {
  color: var(--red) !important;
}
.full-width {
  width: 100%;
}
.audio-note {
  font-size: 9px;
  color: var(--muted);
  margin-left: auto;
  max-width: 100%;
  overflow-wrap: anywhere;
}
.record-zone {
  background: #fafcfb;
  border-top: 1px solid var(--line);
  padding: 23px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
}
.record-button {
  padding: 12px 22px;
  font-size: 12px;
  min-height: 45px;
}
.record-button.recording {
  background: var(--red);
  border-color: var(--red);
}
.record-button.recording .icon {
  animation: mic-pulse 1s infinite;
}
.record-description {
  font-size: 11px;
  color: var(--muted);
  max-width: 420px;
}
.record-actions {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}
.record-transcript {
  font-size: 12px;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line);
  padding: 10px 12px;
  border-radius: 8px;
  width: 100%;
  text-align: left;
}
.record-timer {
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  color: var(--red);
}
.text-button {
  border: 0;
  background: none;
  color: var(--green);
  font-size: 11px;
  text-decoration: underline;
  text-underline-offset: 3px;
  padding: 5px 2px;
}
.text-button.subtle {
  color: var(--muted);
  text-decoration: none;
}
.text-button:hover {
  color: var(--green-hover);
}
.manual-entry {
  padding: 0 24px 22px;
  background: #fafcfb;
  font-size: 11px;
  color: var(--muted);
}
.manual-entry summary {
  cursor: pointer;
  padding: 4px 0;
}
.manual-entry textarea {
  margin: 12px 0 8px;
}
.form-textarea,
textarea,
input:not([type="checkbox"]),
select {
  border: 1px solid #d9e2df;
  border-radius: 8px;
  padding: 10px 12px;
  background: var(--white);
  color: var(--ink);
  max-width: 100%;
}
textarea {
  resize: vertical;
  line-height: 1.7;
  width: 100%;
  min-height: 110px;
  font-size: 13px;
}
textarea::placeholder,
input::placeholder {
  color: #97a39f;
}
textarea:focus,
input:focus,
select:focus {
  border-color: #7fae9e;
}
.exercise-navigation {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 16px;
}
.exercise-navigation .button {
  font-size: 11px;
  padding: 8px 12px;
  min-height: 34px;
}
.exercise-navigation .button:last-child {
  margin-left: auto;
}
.lesson-aside {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.guide-card {
  padding: 20px 19px;
  background: #eef2f8;
  border: 1px solid #e2e8f0;
  border-radius: 13px;
}
.guide-card .eyebrow {
  font-size: 8px;
  color: #71809a;
  margin-bottom: 12px;
}
.guide-card h2 {
  font-size: 16px;
  color: #344e72;
  margin-bottom: 11px;
}
.guide-card > p:not(.eyebrow) {
  font-size: 11px;
  color: #68778c;
  line-height: 1.8;
}
.guide-card ol {
  padding-left: 18px;
  font-size: 11px;
  color: #536783;
  margin: 16px 0;
}
.guide-card li {
  padding-left: 3px;
  margin-bottom: 10px;
}
.guide-note {
  border-top: 1px solid #d9e1ec;
  padding-top: 13px;
  font-size: 10px;
  color: #6e7f95;
  line-height: 1.8;
}
.unit-progress-card {
  padding: 18px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 13px;
}
.unit-progress-card h2 {
  font-size: 12px;
  margin-bottom: 16px;
}
.unit-progress-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 10px;
  margin: 12px 0;
  color: var(--muted);
}
.unit-progress-row > span:last-child {
  margin-left: auto;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}
.status-dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #eef1ef;
  font-size: 8px;
  color: #93a29b;
}
.status-dot.done {
  background: #e1f0e5;
  color: var(--green);
}
.unit-progress-card .button {
  margin-top: 8px;
  font-size: 10px;
  padding: 9px 8px;
  min-height: 35px;
}
.unit-progress-card p {
  font-size: 9px;
  line-height: 1.7;
  margin-top: 9px;
}
.lesson-aside > .text-button {
  text-align: center;
  font-size: 10px;
}
.culture-note {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 19px 0;
  margin-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}
.culture-note > .icon {
  width: 17px;
  height: 17px;
  margin-top: 4px;
  color: var(--green-mid);
}
.culture-note p {
  font-size: 11px;
  line-height: 1.8;
}
.culture-note strong {
  display: block;
  font-size: 10px;
  color: #50675f;
  margin-bottom: 4px;
}
.page-footer {
  margin-top: 28px;
  border-top: 1px solid var(--line);
  padding: 20px 0;
  text-align: center;
  color: #606b6d;
  font-size: 13px;
  line-height: 1.7;
}
.footer-project {
  display: grid;
  gap: 4px;
}
.footer-project p {
  margin: 0;
  text-wrap: balance;
}
.footer-project-title {
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
}
.page-footer #save-status {
  display: block;
  margin-top: 12px;
  color: #7a8586;
  font-size: 11px;
}
.feedback {
  border-top: 1px solid var(--line);
  padding: 19px 24px;
  background: var(--white);
}
.feedback-heading {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 13px;
}
.feedback-heading h3 {
  font-size: 13px;
}
.feedback-score {
  font-size: 21px;
  font-weight: 750;
  color: var(--green);
  font-variant-numeric: tabular-nums;
}
.feedback p {
  font-size: 11px;
  color: var(--muted);
  margin-top: 8px;
}
.word-diff {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin: 13px 0;
}
.word-diff span {
  font-size: 12px;
  border-radius: 5px;
  padding: 3px 7px;
  overflow-wrap: anywhere;
  max-width: 100%;
}
.word-diff .correct {
  background: var(--green-soft);
  color: var(--green);
}
.word-diff .missing,
.word-diff .replace {
  background: var(--red-soft);
  color: var(--red);
  border-bottom: 1px dashed #d79a94;
}
.word-diff .extra {
  background: var(--orange-soft);
  color: var(--orange);
  text-decoration: line-through;
}
.feedback .reference {
  font-size: 13px;
  line-height: 1.8;
  color: var(--ink);
  padding: 12px 0;
}
.feedback-legend {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 9px;
  color: var(--muted);
}
.feedback-legend span:before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--green);
  margin-right: 4px;
}
.feedback-legend span:nth-child(2):before {
  background: var(--red);
}
.feedback-legend span:nth-child(3):before {
  background: var(--orange);
}
.rubric-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  font-size: 11px;
}
.rubric-list > div {
  background: var(--canvas);
  padding: 8px 10px;
  border-radius: 7px;
}
.rubric-list .met {
  color: var(--green);
}
.rubric-list .unmet {
  color: var(--muted);
}
.answer-area {
  padding: 20px 24px;
}
.answer-area label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  margin-bottom: 8px;
}
.answer-area .answer-toolbar {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: space-between;
  margin-top: 12px;
}
.answer-area > .muted {
  font-size: 10px;
  margin-top: 8px;
}
.hint-details {
  border-top: 1px solid var(--line);
  padding: 14px 24px;
  font-size: 11px;
}
.hint-details summary {
  cursor: pointer;
  color: var(--green);
  font-weight: 600;
}
.hint-details p {
  margin-top: 12px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.9;
  overflow-wrap: anywhere;
}
.dictation-listen {
  padding: 25px 24px 6px;
  display: flex;
  gap: 15px;
  align-items: center;
}
.dictation-symbol {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  background: var(--blue-soft);
  color: var(--blue);
  border-radius: 14px;
  flex-shrink: 0;
}
.dictation-symbol .icon {
  width: 26px;
  height: 26px;
}
.dictation-listen h3 {
  font-size: 16px;
  margin-bottom: 4px;
}
.dictation-listen p {
  font-size: 11px;
  color: var(--muted);
}
.dictation-card .audio-row {
  padding-top: 20px;
  padding-bottom: 10px;
}
.character-picker {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.character-picker button {
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--white);
  padding: 8px 10px;
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 10px;
}
.character-picker button[aria-pressed="true"] {
  border-color: #b6d2c6;
  background: var(--green-soft);
  color: var(--green);
}
.character-avatar {
  font-size: 20px;
}
.chat-header {
  padding: 17px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--line);
}
.chat-header .character-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--green-soft);
  display: grid;
  place-items: center;
  font-size: 23px;
}
.chat-header h3 {
  font-size: 13px;
}
.chat-header p {
  font-size: 10px;
  color: var(--muted);
  line-height: 1.5;
  margin-top: 4px;
}
.chat-header .badge {
  margin-left: auto;
  font-size: 8px;
  white-space: normal;
  flex-shrink: 0;
  max-width: 90px;
  text-align: center;
}
.chat-context {
  background: #fafcfb;
  padding: 10px 20px;
  font-size: 10px;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
}
.chat-messages {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 15px;
  max-height: 450px;
  min-height: 250px;
  overflow-y: auto;
  overscroll-behavior: contain;
}
.chat-message {
  max-width: 90%;
  align-self: flex-start;
}
.chat-message.user {
  align-self: flex-end;
}
.chat-message-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  font-size: 9px;
  margin-bottom: 4px;
  gap: 12px;
}
.chat-message p {
  padding: 12px 14px;
  background: #f1f5f3;
  border-radius: 0 12px 12px 12px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-size: 12px;
  line-height: 1.8;
}
.chat-message.user p {
  background: var(--green);
  color: var(--white);
  border-radius: 12px 0 12px 12px;
}
.chat-message .icon-button {
  width: 23px;
  height: 23px;
  border: 0;
  background: transparent;
}
.chat-message .icon {
  width: 13px;
  height: 13px;
}
.chat-typing {
  font-size: 11px;
  color: var(--muted);
  padding: 0 20px 15px;
}
.chat-compose {
  padding: 15px 18px;
  border-top: 1px solid var(--line);
  background: #fafcfb;
}
.chat-compose textarea {
  min-height: 68px;
  max-height: 160px;
  font-size: 12px;
}
.chat-compose .answer-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 10px;
}
.chat-hint {
  font-size: 9px;
  color: var(--muted);
  margin-top: 9px;
}
.chat-prompts {
  display: flex;
  gap: 7px;
  padding: 13px 18px 0;
  flex-wrap: wrap;
}
.chat-prompts button {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--green);
  font-size: 9px;
  padding: 5px 7px;
  text-align: left;
}
.chat-prompts-label {
  width: 100%;
  font-size: 9px;
  color: var(--muted);
}
.chat-bottom {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-top: 10px;
  align-items: center;
}
.chat-bottom p {
  font-size: 10px;
  color: var(--muted);
}
.inline-notice {
  padding: 10px 13px;
  border-radius: 8px;
  background: var(--orange-soft);
  color: #825a29;
  font-size: 11px;
  margin: 12px 0;
  line-height: 1.8;
}
.empty-state {
  text-align: center;
  padding: 35px 20px;
  color: var(--muted);
  font-size: 12px;
}
.empty-state h3 {
  font-size: 16px;
  color: var(--ink);
  margin-bottom: 8px;
}
.empty-state .button {
  margin-top: 15px;
}
.panel {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 25px;
  margin-bottom: 24px;
  box-shadow: var(--shadow);
}
.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 15px;
  margin-bottom: 22px;
}
.section-heading p {
  margin-top: 6px;
}
.section-heading h2 {
  font-size: 17px;
}
.overview-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 22px;
  border-radius: 13px;
}
.stat-card p {
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 10px;
}
.stat-card strong {
  display: block;
  font-size: 27px;
  letter-spacing: -0.7px;
  color: var(--green);
  line-height: 1.2;
}
.stat-card small {
  display: block;
  font-size: 10px;
  color: var(--muted);
  margin-top: 8px;
}
.growth-svg {
  display: block;
  width: 100%;
  height: auto;
  max-height: 220px;
  overflow: visible;
}
.growth-svg text {
  font-size: 10px;
  font-family: "Segoe UI", Arial, sans-serif;
  fill: var(--muted);
}
.chart-caption {
  font-size: 10px;
  color: var(--muted);
  margin-top: 7px;
}
.passport-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}
.passport-item {
  padding: 15px 13px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--canvas);
  text-align: left;
}
.passport-item.complete {
  border-color: #cce3d5;
  background: var(--green-soft);
}
.passport-item strong {
  font-size: 12px;
  display: block;
  margin: 7px 0;
}
.passport-item p {
  font-size: 10px;
  color: var(--muted);
  line-height: 1.5;
}
.passport-item .stamp-state {
  font-size: 9px;
  color: #87928f;
}
.passport-item.complete .stamp-state {
  color: var(--green);
  font-weight: 650;
}
.history-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}
.history-actions select {
  font-size: 11px;
  padding: 8px;
}
.history-item {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  padding: 17px 0;
  border-top: 1px solid var(--line);
}
.history-item h3 {
  font-size: 12px;
  font-weight: 600;
}
.history-item p {
  font-size: 11px;
  color: var(--muted);
  margin-top: 5px;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}
.history-item small {
  display: block;
  color: #8b9891;
  font-size: 9px;
  margin-top: 5px;
}
.history-item .badge {
  margin-top: 4px;
}
.history-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  border-top: 1px solid var(--line);
  padding-top: 17px;
}
.loading-screen {
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 15px;
  text-align: center;
  padding: 25px;
}
.loading-screen h1 {
  font-size: 23px;
}
.loading-screen p {
  color: var(--muted);
  max-width: 500px;
  font-size: 13px;
}
.spinner {
  width: 25px;
  height: 25px;
  border: 2px solid #d9e7e0;
  border-top-color: var(--green);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
.button .spinner {
  width: 15px;
  height: 15px;
  border-top-color: currentColor;
}
dialog {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--white);
  box-shadow: 0 25px 90px #152e3440;
  padding: 28px;
  width: 460px;
  max-width: calc(100vw - 28px);
  max-height: 90vh;
  overflow: auto;
  color: var(--ink);
}
dialog::backdrop {
  background: #20362e66;
  backdrop-filter: blur(3px);
}
.dialog-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 15px;
  margin-bottom: 17px;
}
.dialog-heading h2 {
  font-size: 23px;
}
.dialog-heading .eyebrow {
  font-size: 9px;
  margin-bottom: 9px;
}
.dialog-close {
  font-size: 21px;
  border: 0;
  background: var(--canvas);
}
dialog > p {
  font-size: 12px;
  line-height: 1.9;
}
dialog form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 18px;
}
dialog label {
  display: flex;
  flex-direction: column;
  gap: 7px;
  font-size: 12px;
  font-weight: 600;
}
dialog label input,
dialog select {
  font-size: 12px;
  font-weight: 400;
  width: 100%;
}
.optional {
  display: inline;
  font-size: 10px;
  color: var(--muted);
  font-weight: 400;
}
.segmented {
  display: flex;
  background: var(--canvas);
  border: 1px solid var(--line);
  padding: 4px;
  border-radius: 9px;
  margin-top: 20px;
}
.segmented button {
  flex: 1;
  padding: 8px;
  border: 0;
  background: none;
  font-size: 11px;
  color: var(--muted);
  border-radius: 6px;
}
.segmented button[aria-pressed="true"] {
  background: var(--white);
  color: var(--green);
  box-shadow: var(--shadow);
  font-weight: 650;
}
.form-error {
  background: var(--red-soft);
  color: var(--red);
  padding: 10px;
  border-radius: 7px;
  font-size: 12px;
}
.dialog-footer {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-top: 20px;
  align-items: center;
}
.settings-note {
  border-top: 1px solid var(--line);
  padding-top: 15px;
}
.settings-note strong {
  font-size: 12px;
}
.settings-note p {
  margin-top: 5px;
}
.confirm-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 24px;
}
.certificate-dialog {
  width: 680px;
}
.certificate-dialog #certificate-content {
  text-align: center;
  padding: 35px 15px;
}
.certificate-dialog h2 {
  font-size: 33px;
  color: var(--green);
  margin: 15px 0 30px;
}
.certificate-dialog h3 {
  font-size: 29px;
  margin: 18px 0;
  color: var(--green);
}
.certificate-dialog p {
  line-height: 2;
  font-size: 14px;
}
.certificate-dialog .small {
  font-size: 11px;
  margin-top: 20px;
}
.toast-region {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  width: max-content;
  max-width: calc(100vw - 28px);
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}
.toast {
  border-radius: 11px;
  padding: 13px 20px;
  background: #23493e;
  color: var(--white);
  font-size: 12px;
  box-shadow: 0 5px 30px #102b2c33;
  max-width: 520px;
  animation: toast-in 0.16s ease;
}
.toast.error {
  background: #863b37;
}
.noscript {
  position: fixed;
  inset: 100px 20px auto;
  background: var(--white);
  padding: 30px;
  z-index: 30;
}
.mobile-only {
  display: none;
}
.pending-note {
  color: var(--orange);
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
@keyframes mic-pulse {
  50% {
    opacity: 0.35;
  }
}
@keyframes toast-in {
  from {
    transform: translateY(8px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}
@media (min-width: 1500px) {
  main {
    padding: 40px 55px 0;
  }
  .workspace {
    grid-template-columns: minmax(0, 1fr) 260px;
    gap: 30px;
  }
  .phrase {
    font-size: 30px;
  }
  .sidebar {
    padding-top: 35px;
  }
  .app-layout {
    grid-template-columns: 265px minmax(0, 1fr);
  }
}
@media (max-width: 1190px) {
  .topbar {
    padding: 0 22px;
    gap: 20px;
  }
  .connection {
    display: none;
  }
  .app-layout {
    grid-template-columns: 220px minmax(0, 1fr);
  }
  main {
    padding: 29px 25px 0;
  }
  .workspace {
    grid-template-columns: minmax(0, 1fr) 205px;
    gap: 17px;
  }
  .intro-tag {
    display: none;
  }
  .phrase {
    font-size: 24px;
  }
  .phrase-content {
    padding: 21px;
  }
  .card-label,
  .audio-row,
  .record-zone,
  .feedback,
  .answer-area {
    padding-left: 20px;
    padding-right: 20px;
  }
  .guide-card {
    padding: 17px 15px;
  }
  .mode-tabs > button {
    gap: 6px;
    padding-left: 7px;
    padding-right: 7px;
    font-size: 11px;
  }
  .tab-score {
    font-size: 8px;
  }
  .passport-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (max-width: 1000px) {
  .app-layout {
    grid-template-columns: 200px minmax(0, 1fr);
  }
  .sidebar {
    padding: 25px 11px 18px;
  }
  .sidebar-heading {
    padding-left: 9px;
  }
  .unit-button {
    gap: 8px;
    padding: 10px 7px;
  }
  .unit-copy strong {
    font-size: 10px;
  }
  .workspace {
    grid-template-columns: minmax(0, 1fr);
  }
  .lesson-aside {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
  }
  .lesson-aside > .text-button {
    grid-column: 1/-1;
    margin-top: -4px;
  }
  .guide-card {
    height: 100%;
  }
  .guide-card ol {
    margin: 12px 0;
  }
  .overview-stats {
    grid-template-columns: 1fr 1fr;
  }
  .topnav {
    gap: 19px;
  }
  .top-actions {
    gap: 9px;
  }
  .profile-button #profile-name {
    max-width: 80px;
  }
  .topbar {
    gap: 15px;
  }
  .brand {
    font-size: 17px;
  }
  .brand-mark {
    width: 35px;
    height: 35px;
  }
  .mode-tabs > button {
    padding: 12px 6px;
  }
  .tab-score {
    margin-left: 0;
  }
  h1 {
    font-size: 28px;
  }
  .phrase {
    font-size: 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *:before,
  *:after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}
@media print {
  body > * {
    display: none !important;
  }
  body > #certificate-dialog {
    display: block !important;
    position: static;
    width: 100%;
    max-width: none;
    max-height: none;
    border: 2px solid #174c43;
    padding: 40px;
    box-shadow: none;
  }
  #certificate-dialog .confirm-actions {
    display: none;
  }
  #certificate-dialog::backdrop {
    background: none;
  }
  #certificate-content {
    padding: 50px 15px !important;
  }
  #certificate-content p {
    font-size: 16px;
  }
  .certificate-dialog h2 {
    font-size: 38px;
  }
}
.quote-note {
  border-top: 1px solid var(--line);
  padding: 14px 0 0;
  color: var(--muted);
  font-size: 11px;
}
.quote-note summary {
  cursor: pointer;
  font-size: 10px;
  color: var(--green-mid);
}
.quote-note p {
  margin-top: 13px;
  max-width: 750px;
}
.quote-note p[lang="en"] {
  color: var(--ink);
  font-size: 14px;
  font-style: italic;
}
.quote-note small {
  display: block;
  margin-top: 9px;
}
.quote-actions {
  display: flex;
  gap: 18px;
  margin-top: 8px;
}
/* Keep the lesson and its primary action close to the first viewport. */
.brand-mark {
  justify-content: center;
  letter-spacing: -4px;
  padding: 0 4px 2px 0;
  font-size: 28px;
  font-weight: 650;
}
.search-field input[type="search"] {
  border: 0;
  padding: 0;
  background: transparent;
  outline: none;
  border-radius: 0;
}
@media (min-width: 761px) {
  .topbar {
    height: 68px;
  }
  .app-layout {
    min-height: calc(100vh - 68px);
  }
  .sidebar {
    top: 68px;
    height: calc(100vh - 68px);
    padding-top: 24px;
  }
  .sidebar-heading {
    padding-bottom: 17px;
  }
  main {
    padding-top: 25px;
  }
  .page-heading {
    margin-bottom: 18px;
  }
  .page-heading h1 {
    font-size: 29px;
    margin-bottom: 7px;
  }
  .page-heading .eyebrow {
    margin-bottom: 6px;
  }
  .lesson-intro {
    padding: 12px 16px;
    margin-bottom: 18px;
  }
  .mode-tabs {
    margin-bottom: 20px;
  }
  .mode-tabs > button {
    padding-top: 9px;
    padding-bottom: 12px;
  }
  .exercise-heading {
    margin-bottom: 13px;
  }
  .exercise-picker {
    margin-bottom: 13px;
  }
  .phrase-content {
    padding-top: 17px;
    padding-bottom: 18px;
  }
  .phrase {
    line-height: 1.5;
  }
  .ipa {
    margin-top: 10px;
  }
  .meaning {
    margin-top: 13px;
    padding-top: 12px;
  }
  .record-zone {
    padding-top: 17px;
    padding-bottom: 16px;
    gap: 9px;
  }
  .manual-entry {
    padding-bottom: 16px;
  }
  .sidebar-bottom {
    margin-top: 18px;
    padding-top: 15px;
  }
  .unit-button {
    padding-top: 9px;
    padding-bottom: 9px;
  }
}

/* Mobile: prioritize the exercise, comfortable touch targets and the visible keyboard area. */
.lesson-help > summary {
  display: none;
}
.pronunciation-details > summary {
  display: none;
}
.unit-dialog {
  padding: 0;
}
.drawer-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  border-bottom: 1px solid var(--line);
}
.drawer-heading .eyebrow {
  margin-bottom: 5px;
}
.drawer-heading .icon-button {
  font-size: 24px;
}
.unit-drawer-content {
  min-height: 0;
  flex: 1;
  overflow-y: auto;
  overscroll-behavior: contain;
}
html:has(dialog[open]) {
  overflow: hidden;
}

@media (max-width: 760px), (max-width: 1000px) and (max-height: 500px) {
  :root {
    --mobile-header-height: 56px;
    --mobile-nav-height: 60px;
  }
  html {
    scroll-padding-bottom: calc(
      var(--mobile-nav-height) + env(safe-area-inset-bottom) + 16px
    );
    scroll-padding-top: calc(
      var(--mobile-header-height) + env(safe-area-inset-top) + 72px
    );
  }
  .topbar {
    height: calc(var(--mobile-header-height) + env(safe-area-inset-top));
    padding: env(safe-area-inset-top) max(12px, env(safe-area-inset-right)) 0
      max(12px, env(safe-area-inset-left));
    gap: 8px;
    flex-wrap: nowrap;
  }
  .brand {
    font-size: 16px;
    gap: 7px;
    min-width: 0;
  }
  .brand small {
    font-size: 7px;
    letter-spacing: 1.2px;
    margin-top: 5px;
  }
  .brand-mark {
    width: 32px;
    height: 32px;
    border-radius: 9px;
    font-size: 26px;
  }
  .top-actions {
    gap: 3px;
  }
  .top-actions .icon-button,
  .profile-button {
    min-width: 44px;
    min-height: 44px;
  }
  .top-actions .icon-button {
    width: 44px;
    height: 44px;
    background: transparent;
    border-color: transparent;
  }
  .profile-button {
    padding: 0 2px;
    justify-content: center;
  }
  .profile-button #profile-name,
  .profile-button > span:last-child {
    display: none;
  }
  .avatar {
    width: 32px;
    height: 32px;
    font-size: 12px;
  }
  .topnav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: calc(var(--mobile-nav-height) + env(safe-area-inset-bottom));
    padding: 0 env(safe-area-inset-right) env(safe-area-inset-bottom)
      env(safe-area-inset-left);
    background: var(--white);
    border-top: 1px solid var(--line);
    z-index: 25;
    justify-content: center;
    gap: 0;
  }
  .nav-link {
    width: 50%;
    border-top: 2px solid transparent;
    border-bottom: 0;
    font-size: 13px;
    padding: 0;
    min-height: 44px;
  }
  .nav-link.active {
    border-top-color: var(--green);
    border-bottom-color: transparent;
  }
  .app-layout {
    display: block;
    min-height: calc(100dvh - var(--mobile-header-height));
  }
  .sidebar {
    display: none;
  }
  .mobile-only {
    display: inline-flex;
  }
  main {
    padding: 16px max(14px, env(safe-area-inset-right))
      calc(var(--mobile-nav-height) + env(safe-area-inset-bottom) + 20px)
      max(14px, env(safe-area-inset-left));
  }
  .page-heading {
    gap: 12px;
    margin-bottom: 13px;
    align-items: center;
  }
  .page-heading > div {
    min-width: 0;
  }
  .page-heading h1 {
    font-size: 23px;
    letter-spacing: -0.6px;
    line-height: 1.3;
    margin-bottom: 0;
    overflow-wrap: anywhere;
  }
  .page-heading .eyebrow {
    font-size: 9px;
    letter-spacing: 1px;
    margin-bottom: 6px;
  }
  #unit-subtitle {
    display: none;
  }
  .page-heading .muted {
    font-size: 13px;
    margin-top: 8px;
  }
  .page-heading .button {
    font-size: 12px;
    padding: 9px 11px;
    min-height: 44px;
    white-space: nowrap;
    flex-shrink: 0;
  }
  .lesson-intro {
    padding: 10px 12px;
    gap: 9px;
    margin-bottom: 11px;
    border-radius: 10px;
  }
  .intro-icon {
    width: 28px;
    height: 28px;
    border-radius: 8px;
  }
  .intro-icon .icon {
    width: 17px;
    height: 17px;
  }
  .lesson-intro strong {
    font-size: 12px;
    line-height: 1.5;
    display: block;
  }
  .lesson-intro p {
    display: none;
  }
  .intro-tag {
    display: none;
  }
  .mode-tabs {
    position: sticky;
    top: calc(var(--mobile-header-height) + env(safe-area-inset-top));
    z-index: 10;
    background: var(--canvas);
    gap: 0;
    margin: 0 -2px 14px;
    box-shadow: 0 6px 8px var(--canvas);
  }
  .mode-tabs > button {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 4px;
    padding: 8px 3px 10px;
    font-size: 12px;
    min-height: 58px;
    min-width: 0;
  }
  .mode-tabs .step-number,
  #dictation-tab-icon {
    display: none;
  }
  .mode-tabs > button > .tab-score {
    font-size: 10px;
    padding: 1px 5px;
  }
  .workspace {
    display: flex;
    flex-direction: column;
    gap: 20px;
  }
  .exercise-panel,
  .lesson-aside {
    width: 100%;
  }
  .exercise-heading {
    margin-bottom: 10px;
  }
  .exercise-heading h2 {
    font-size: 16px;
  }
  .exercise-count {
    font-size: 11px;
    padding: 4px 8px;
  }
  .exercise-picker {
    position: relative;
    flex-wrap: nowrap;
    overflow-x: auto;
    overscroll-behavior-x: contain;
    scrollbar-width: none;
    gap: 7px;
    padding-bottom: 4px;
    margin: 0 0 10px;
  }
  .exercise-picker::-webkit-scrollbar {
    display: none;
  }
  .exercise-picker button {
    min-height: 44px;
    padding: 9px 13px;
    font-size: 12px;
    flex-shrink: 0;
  }
  .exercise-picker button .mini-score {
    font-size: 10px;
  }
  .practice-card {
    border-radius: 14px;
  }
  .card-label {
    padding: 14px 16px 0;
    align-items: flex-start;
  }
  .card-label .eyebrow {
    font-size: 9px;
    line-height: 1.7;
  }
  .badge {
    font-size: 10px;
  }
  .phrase-content {
    padding: 15px 16px 9px;
  }
  .phrase {
    font-size: 22px;
    line-height: 1.48;
    letter-spacing: -0.35px;
  }
  .pronunciation-details {
    margin-top: 8px;
  }
  .pronunciation-details > summary {
    display: list-item;
    cursor: pointer;
    font-size: 12px;
    color: var(--green);
    min-height: 40px;
    padding: 10px 0;
  }
  .ipa {
    font-size: 13px;
    margin-top: 5px;
  }
  .meaning {
    font-size: 13px;
    padding-top: 9px;
    margin-top: 10px;
  }
  .audio-row {
    padding: 0 16px 14px;
    gap: 7px;
  }
  .audio-row .button {
    min-height: 44px;
    font-size: 12px;
    padding: 9px 12px;
  }
  .audio-row .icon {
    width: 16px;
    height: 16px;
  }
  .audio-note {
    display: none;
  }
  .button {
    min-height: 44px;
    font-size: 13px;
  }
  .icon-button {
    min-width: 44px;
    min-height: 44px;
  }
  .record-zone {
    padding: 14px 16px;
    gap: 9px;
  }
  .record-actions {
    width: 100%;
    gap: 8px;
  }
  .record-button {
    width: 100%;
    min-height: 48px;
    font-size: 14px;
  }
  .record-description {
    font-size: 12px;
    line-height: 1.6;
  }
  .record-transcript {
    font-size: 14px;
  }
  .record-timer {
    font-size: 14px;
  }
  .manual-entry {
    padding: 0 16px 13px;
    font-size: 12px;
  }
  .manual-entry summary,
  .hint-details summary {
    min-height: 44px;
    padding: 11px 0;
    line-height: 1.6;
  }
  .manual-entry .button {
    width: 100%;
  }
  .text-button {
    min-height: 44px;
    font-size: 12px;
  }
  textarea,
  input:not([type="checkbox"]),
  select,
  dialog label input,
  dialog select,
  .chat-compose textarea,
  .answer-area textarea {
    font-size: 16px;
  }
  textarea {
    scroll-margin: 100px 0 90px;
  }
  .answer-area {
    padding: 16px;
  }
  .answer-area label {
    font-size: 13px;
  }
  .answer-area .answer-toolbar {
    gap: 10px;
  }
  .answer-area .answer-toolbar > .button,
  .answer-area .answer-toolbar > .record-actions {
    width: 100%;
  }
  .answer-area > .muted {
    font-size: 12px;
  }
  .hint-details {
    padding: 0 16px;
    font-size: 12px;
  }
  .hint-details p {
    font-size: 13px;
  }
  .exercise-navigation {
    margin-top: 12px;
    gap: 10px;
  }
  .exercise-navigation .button {
    min-height: 44px;
    padding: 9px 12px;
    font-size: 12px;
  }
  .lesson-aside {
    display: flex;
    gap: 12px;
  }
  .unit-progress-card {
    order: 0;
    padding: 17px;
  }
  .unit-progress-card h2 {
    font-size: 14px;
  }
  .unit-progress-row {
    font-size: 13px;
    gap: 9px;
    margin: 13px 0;
  }
  .unit-progress-card .button {
    min-height: 44px;
    font-size: 13px;
    margin-top: 9px;
  }
  .unit-progress-card p {
    font-size: 12px;
  }
  .lesson-help {
    order: 1;
    border: 1px solid var(--line);
    border-radius: 11px;
    overflow: hidden;
  }
  .lesson-help > summary {
    display: list-item;
    padding: 13px 17px;
    min-height: 48px;
    cursor: pointer;
    font-size: 13px;
    color: var(--green);
    background: var(--white);
  }
  .guide-card {
    border: 0;
    border-top: 1px solid var(--line);
    border-radius: 0;
    padding: 17px;
  }
  .guide-card h2 {
    font-size: 16px;
  }
  .guide-card > p:not(.eyebrow),
  .guide-card li,
  .guide-note {
    font-size: 13px;
  }
  .guide-card .eyebrow {
    font-size: 10px;
  }
  .lesson-aside > .text-button {
    order: 2;
    font-size: 12px;
  }
  .culture-note {
    padding: 15px 0;
    margin-top: 16px;
  }
  .culture-note p {
    font-size: 12px;
  }
  .culture-note strong {
    font-size: 12px;
  }
  .quote-note,
  .quote-note summary {
    font-size: 12px;
  }
  .page-footer {
    margin-top: 20px;
    padding: 18px 4px;
    font-size: 12px;
  }
  .footer-project {
    gap: 6px;
  }
  .footer-project-title {
    font-size: 13px;
  }
  .panel {
    padding: 18px 15px;
    border-radius: 13px;
    margin-bottom: 16px;
  }
  .overview-stats {
    gap: 10px;
    margin-bottom: 17px;
  }
  .stat-card {
    padding: 15px;
    min-width: 0;
  }
  .stat-card strong {
    font-size: 25px;
  }
  .stat-card p {
    font-size: 12px;
  }
  .stat-card small {
    font-size: 11px;
  }
  .section-heading {
    gap: 12px;
  }
  .section-heading h2 {
    font-size: 16px;
  }
  .section-heading p {
    font-size: 12px;
  }
  .passport-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 9px;
  }
  .passport-item {
    padding: 14px 11px;
  }
  .passport-item p,
  .passport-item .stamp-state {
    font-size: 12px;
  }
  .history-heading {
    flex-direction: column;
    align-items: stretch;
  }
  .history-actions {
    justify-content: space-between;
    flex-wrap: wrap;
  }
  .history-actions .button {
    font-size: 12px;
  }
  .history-actions select {
    font-size: 16px;
  }
  .history-item {
    gap: 10px;
  }
  .history-item > div {
    min-width: 0;
  }
  .history-item h3 {
    font-size: 13px;
  }
  .history-item p {
    font-size: 13px;
  }
  .history-item small {
    font-size: 11px;
  }
  .history-item .badge {
    font-size: 11px;
    padding: 4px 7px;
    flex-shrink: 0;
  }
  .history-footer {
    flex-wrap: wrap;
    gap: 10px;
  }
  .character-picker {
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: 7px;
    scrollbar-width: none;
  }
  .character-picker button {
    flex-shrink: 0;
    min-height: 44px;
    font-size: 12px;
    padding: 8px 10px;
  }
  .character-picker .character-avatar {
    font-size: 20px;
  }
  .chat-header {
    padding: 15px;
    gap: 9px;
  }
  .chat-header h3 {
    font-size: 14px;
  }
  .chat-header p {
    font-size: 12px;
  }
  .chat-header .badge {
    font-size: 10px;
    max-width: 83px;
  }
  .chat-context {
    font-size: 12px;
    padding: 12px 15px;
  }
  .chat-messages {
    padding: 15px;
    min-height: 180px;
    max-height: 48dvh;
  }
  .chat-message {
    max-width: 95%;
  }
  .chat-message p {
    font-size: 14px;
    line-height: 1.7;
  }
  .chat-message-label {
    font-size: 11px;
    min-height: 36px;
  }
  .chat-message .icon-button {
    width: 44px;
    height: 44px;
  }
  .chat-message .icon {
    width: 17px;
    height: 17px;
  }
  .chat-prompts {
    padding: 12px 15px 0;
  }
  .chat-prompts-label {
    font-size: 11px;
  }
  .chat-prompts button {
    font-size: 12px;
    min-height: 44px;
    padding: 8px 10px;
  }
  .chat-compose {
    padding: 14px 15px;
    scroll-margin-bottom: 15px;
  }
  .chat-compose .answer-toolbar {
    flex-wrap: wrap;
  }
  .chat-compose .answer-toolbar > .record-actions,
  .chat-compose .answer-toolbar > .button {
    width: 100%;
  }
  .chat-compose .record-actions > .button {
    flex: 1;
  }
  .chat-hint,
  .chat-bottom p {
    font-size: 12px;
  }
  .chat-bottom {
    align-items: flex-start;
    flex-wrap: wrap;
  }
  .feedback {
    padding: 17px 16px;
  }
  .feedback-heading h3 {
    font-size: 14px;
  }
  .feedback-score {
    font-size: 23px;
  }
  .feedback p {
    font-size: 13px;
  }
  .word-diff span {
    font-size: 14px;
  }
  .feedback-legend {
    font-size: 11px;
  }
  .rubric-list {
    font-size: 12px;
  }
  .inline-notice {
    font-size: 13px;
  }
  .dictation-listen {
    padding: 20px 16px 6px;
    gap: 12px;
  }
  .dictation-listen p {
    font-size: 13px;
  }
  .dictation-card .audio-row {
    padding: 15px 16px 0;
  }
  .dictation-card .audio-row .button {
    padding: 8px 9px;
    font-size: 12px;
    gap: 6px;
  }
  .toast-region {
    bottom: calc(var(--mobile-nav-height) + env(safe-area-inset-bottom) + 12px);
  }
  .toast {
    font-size: 13px;
    padding: 12px 15px;
  }
  dialog:not(.unit-dialog) {
    margin: auto 0 0;
    width: 100%;
    max-width: 100%;
    max-height: calc(100dvh - 20px);
    border-radius: 18px 18px 0 0;
    padding: 22px 20px max(22px, env(safe-area-inset-bottom));
  }
  .dialog-heading h2 {
    font-size: 23px;
  }
  .dialog-heading .eyebrow {
    font-size: 10px;
  }
  dialog > p,
  dialog label {
    font-size: 14px;
  }
  dialog .muted.small {
    font-size: 12px;
  }
  .segmented button {
    min-height: 44px;
    font-size: 13px;
  }
  .dialog-footer {
    flex-wrap: wrap;
  }
  .unit-dialog {
    margin: 0 0 0 auto;
    top: 0;
    bottom: 0;
    width: min(360px, calc(100vw - 20px));
    max-width: none;
    height: 100dvh;
    max-height: 100dvh;
    border-radius: 15px 0 0 15px;
    overflow: hidden;
  }
  .unit-dialog[open] {
    display: flex;
    flex-direction: column;
  }
  .drawer-heading {
    padding: max(16px, env(safe-area-inset-top)) 17px 14px;
  }
  .drawer-heading h2 {
    font-size: 21px;
  }
  .unit-dialog .sidebar {
    display: flex;
    position: static;
    top: auto;
    width: 100%;
    height: auto;
    min-height: 100%;
    border: 0;
    box-shadow: none;
    overflow: visible;
    padding: 15px 14px max(20px, env(safe-area-inset-bottom));
  }
  .unit-dialog .sidebar-heading {
    display: none;
  }
  .unit-dialog .unit-button {
    min-height: 58px;
    padding: 10px;
  }
  .unit-dialog .unit-copy strong {
    font-size: 13px;
  }
  .unit-dialog .unit-copy small {
    font-size: 10px;
  }
  .unit-dialog .unit-number {
    width: 33px;
    height: 36px;
    font-size: 12px;
  }
  .unit-dialog .search-field {
    flex-direction: row;
    font-weight: 400;
    gap: 10px;
    min-height: 46px;
    margin-bottom: 12px;
  }
  .unit-dialog .sidebar-bottom p {
    font-size: 12px;
  }
  .keyboard-open .topnav {
    display: none;
  }
  .keyboard-open main {
    padding-bottom: 20px;
  }
  .keyboard-open .topbar,
  .keyboard-open .mode-tabs {
    position: static;
  }
  .keyboard-open .toast-region {
    bottom: max(12px, env(safe-area-inset-bottom));
  }
}
@media (max-width: 360px) {
  .brand {
    font-size: 15px;
  }
  .mode-tabs > button {
    font-size: 11px;
  }
  .page-heading h1 {
    font-size: 21px;
  }
  .page-heading .button {
    font-size: 11px;
    padding: 9px;
  }
  .phrase {
    font-size: 21px;
  }
  .audio-row .button {
    padding: 8px 10px;
  }
  .dictation-card .audio-row .button {
    padding: 8px;
    font-size: 11px;
    gap: 5px;
  }
}
@media (max-width: 1000px) and (max-height: 500px) {
  :root {
    --mobile-header-height: 48px;
    --mobile-nav-height: 52px;
  }
  .mode-tabs {
    position: static;
  }
  .lesson-intro {
    display: none;
  }
}