:root {
  --bg: #f7f8f4;
  --surface: #fffefa;
  --panel: #f0f3ed;
  --ink: #243b33;
  --muted: #7c8980;
  --line: #dfe5db;
  --green: #267159;
  --green-soft: #e7f2e8;
  --red: #b64d45;
  --red-soft: #fff0eb;
  --yellow: #d8c65f;
  --shadow: 0 18px 65px #243b3307;
  --font: Arial, 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
  color-scheme: light;
}
:root[data-theme='dark'] {
  --bg: #17221e;
  --surface: #1e2c25;
  --panel: #25362c;
  --ink: #e1eadf;
  --muted: #9eafa1;
  --line: #364a3b;
  --green: #86c8a6;
  --green-soft: #294a38;
  --red: #f1988c;
  --red-soft: #4b302c;
  --yellow: #d8c65f;
  --shadow: 0 20px 65px #0002;
  color-scheme: dark;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 14px/1.6 var(--font);
  min-width: 360px;
}
button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
}
button,
a,
input,
select,
textarea {
  -webkit-tap-highlight-color: transparent;
}
button {
  cursor: pointer;
  border: none;
  background: none;
}
button:disabled {
  cursor: default;
  opacity: 0.8;
}
a {
  color: var(--green);
  text-decoration: none;
}
button,
input,
select,
textarea {
  outline-offset: 4px;
}
button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--green);
}
input,
textarea,
select {
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 9px;
  padding: 11px 13px;
}
input[type='checkbox'] {
  accent-color: var(--green);
  width: 17px;
  height: 17px;
  padding: 0;
  cursor: pointer;
}
input[type='range'] {
  accent-color: var(--green);
  padding: 0;
}
textarea {
  width: 100%;
  resize: vertical;
  line-height: 1.7;
}
select {
  cursor: pointer;
}
button:active {
  transform: translateY(1px);
}
.header {
  height: 100px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 4.5vw;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 13px;
  color: var(--ink);
}
.brand img {
  width: 43px;
  height: 43px;
}
.brand > span {
  font-weight: 700;
  font-size: 24px;
  letter-spacing: 3px;
  line-height: 1.15;
}
.brand small {
  display: block;
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 2px;
  color: var(--muted);
  margin-top: 7px;
}
.header nav {
  display: flex;
  gap: 7px;
  background: var(--panel);
  padding: 5px;
  border-radius: 30px;
}
.header nav button {
  padding: 8px 23px;
  border-radius: 24px;
  color: var(--muted);
  white-space: nowrap;
}
.header nav button.active {
  background: var(--surface);
  color: var(--green);
  box-shadow: 0 2px 7px #00000007;
  font-weight: 600;
}
.nav-dot {
  margin-left: 7px;
  font-size: 11px;
  opacity: 0.8;
}
.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}
.save-status {
  font-size: 11px;
  color: var(--muted);
  white-space: nowrap;
}
.save-status:before {
  content: '';
  display: inline-block;
  width: 5px;
  height: 5px;
  margin-right: 7px;
  border-radius: 50%;
  background: var(--green);
}
.save-error {
  color: var(--red);
}
.icon-btn {
  font-size: 23px;
  width: 34px;
  height: 34px;
  line-height: 1;
}
.main {
  max-width: 1150px;
  margin: 0 auto;
  padding: 32px 40px 20px;
}
.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding-bottom: 26px;
}
.toolbar-set {
  display: flex;
  gap: 22px;
}
.toolbar label {
  font-size: 11px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 9px;
}
.toolbar select {
  padding: 7px 28px 7px 11px;
  background: transparent;
  border-color: transparent;
  color: var(--ink);
  font-size: 13px;
}
.toolbar select:hover {
  border-color: var(--line);
  background: var(--surface);
}
.text-btn {
  color: var(--green);
  font-size: 12px;
  padding: 4px 2px;
  white-space: nowrap;
}
.text-btn:hover {
  text-decoration: underline;
}
.metrics {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 1fr 1fr 1fr;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
  padding: 21px 27px;
  gap: 25px;
  box-shadow: var(--shadow);
}
.metrics > div {
  border-right: 1px solid var(--line);
  padding-right: 25px;
}
.metrics > div:last-child {
  border: 0;
  padding-right: 0;
}
.metrics span {
  display: block;
  font-size: 11px;
  letter-spacing: 0.3px;
  color: var(--muted);
  margin-bottom: 6px;
}
.metrics strong {
  font-size: 26px;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.7px;
  font-variant-numeric: tabular-nums;
}
.metrics small {
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--muted);
}
.metrics .time {
  font-size: 17px;
  letter-spacing: 0;
  line-height: 2;
}
.progress-track {
  height: 3px;
  background: var(--panel);
  border-radius: 5px;
  width: 100%;
  margin-top: 10px;
}
.progress-track i {
  display: block;
  height: 100%;
  background: var(--green);
  border-radius: 5px;
}
.welcome {
  text-align: center;
  padding: 65px 15px 60px;
}
.eyebrow {
  font-size: 10px;
  letter-spacing: 2.1px;
  color: var(--muted);
  font-weight: 600;
}
.eyebrow i {
  display: inline-block;
  height: 6px;
  width: 6px;
  background: var(--green);
  border-radius: 50%;
  margin-right: 9px;
  vertical-align: 1px;
}
.welcome h1 {
  font-size: 46px;
  line-height: 1.6;
  font-weight: 500;
  letter-spacing: 3px;
  margin: 21px 0 15px;
}
.welcome h1 em {
  font-style: normal;
  color: var(--green);
}
.welcome p {
  color: var(--muted);
  font-size: 13px;
}
.welcome-actions {
  display: flex;
  justify-content: center;
  gap: 13px;
  margin-top: 31px;
}
.primary,
.secondary {
  border-radius: 9px;
  padding: 11px 19px;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  white-space: nowrap;
  transition: background 0.15s;
}
.primary {
  background: var(--green);
  color: var(--surface);
  border: 1px solid var(--green);
}
:root[data-theme='dark'] .primary {
  color: #183424;
}
.primary:hover {
  filter: brightness(0.94);
}
.secondary {
  background: var(--surface);
  border: 1px solid var(--line);
}
.secondary:hover {
  background: var(--panel);
}
.large {
  padding: 13px 22px;
}
.welcome-note {
  font-size: 11px;
  color: var(--muted);
  margin-top: 20px;
}
.key-guide {
  display: flex;
  justify-content: center;
  gap: 26px;
  margin-top: 46px;
  color: var(--muted);
  font-size: 11px;
}
kbd {
  display: inline-block;
  font: 10px var(--font);
  border: 1px solid var(--line);
  padding: 2px 6px;
  border-radius: 4px;
  margin-right: 4px;
  background: var(--surface);
  color: var(--muted);
  white-space: nowrap;
}
.primary kbd {
  background: #ffffff18;
  color: inherit;
  border-color: #ffffff38;
}
.practice-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--line);
  padding: 19px 1px;
  font-size: 11px;
  color: var(--muted);
}
.question-card {
  position: relative;
  padding: 34px 40px 26px;
  margin: 32px 0 28px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface);
  box-shadow: var(--shadow);
}
.question-top {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 30px;
}
.question-top > .eyebrow {
  margin-right: auto;
}
.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}
.badge {
  font-size: 10px;
  padding: 3px 9px;
  border-radius: 6px;
}
.badge.wrong {
  background: var(--red-soft);
  color: var(--red);
}
.badge.favorite {
  background: var(--panel);
  color: var(--yellow);
}
.favorite-btn {
  font-size: 27px;
  color: var(--muted);
  width: 34px;
  padding: 0;
  line-height: 1.1;
}
.favorite-btn.on {
  color: var(--yellow);
}
.question-label {
  text-align: center;
  font-size: 12px;
  color: var(--muted);
  margin: 26px 0 19px;
}
.meaning-prompt {
  text-align: center;
  max-width: 790px;
  margin: 0 auto 26px;
  font-size: 21px;
  line-height: 1.9;
  font-weight: 500;
}
.meaning-prompt p {
  margin: 8px 0;
}
.input-wrap {
  display: flex;
  align-items: center;
  border: 1.5px solid var(--line);
  background: var(--bg);
  border-radius: 12px;
  max-width: 710px;
  margin: 28px auto 0;
  padding-right: 19px;
  transition: border-color 0.15s;
}
.input-wrap:focus-within {
  border-color: var(--green);
  box-shadow: 0 0 0 4px #4a94610b;
}
.input-wrap input {
  width: 100%;
  border: 0;
  outline: 0;
  background: none;
  font: 25px/1.7 var(--font);
  padding: 17px 22px;
  letter-spacing: 0.5px;
  border-radius: 12px;
  min-width: 0;
}
.input-wrap input::placeholder {
  font: 15px var(--font);
  color: var(--muted);
  letter-spacing: 0;
}
.input-wrap.correct {
  background: var(--green-soft);
  border-color: var(--green);
  color: var(--green);
}
.input-wrap.wrong,
.input-wrap.retry {
  border-color: var(--red);
  background: var(--red-soft);
  color: var(--red);
}
#answer-state {
  font-size: 24px;
}
.feedback {
  text-align: center;
  min-height: 25px;
  font-size: 12px;
  color: var(--muted);
  margin-top: 14px;
}
.feedback.correct {
  color: var(--green);
}
.feedback.wrong,
.feedback.retry {
  color: var(--red);
}
.question-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 13px;
  margin: 24px 0 12px;
  flex-wrap: wrap;
}
.hint-letters {
  text-align: center;
  font: 22px/1.9 var(--font);
  color: var(--muted);
  word-break: break-word;
}
.hint-control {
  display: flex;
  align-items: center;
  gap: 13px;
  font-size: 11px;
  color: var(--muted);
  margin: -15px 0 18px;
}
.hint-control label {
  display: flex;
  align-items: center;
  gap: 12px;
}
.hint-control input {
  height: 4px;
  width: 140px;
}
.english-prompt {
  text-align: center;
  font: 40px/1.4 var(--font);
  font-weight: 500;
  margin: 15px 0 27px;
}
.options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 13px;
}
.option {
  display: flex;
  align-items: center;
  gap: 14px;
  text-align: left;
  border: 1px solid var(--line);
  padding: 16px;
  border-radius: 10px;
  background: var(--bg);
  font-size: 13px;
  line-height: 1.8;
}
.option kbd {
  font-size: 12px;
  flex-shrink: 0;
}
.option:hover:not(:disabled) {
  border-color: var(--green);
}
.option.selected {
  border-color: var(--red);
  background: var(--red-soft);
}
.option.correct {
  border-color: var(--green);
  background: var(--green-soft);
}
.answer-card {
  border-top: 1px solid var(--line);
  margin-top: 30px;
  padding-top: 27px;
}
.answer-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}
.answer-heading h2 {
  font: 35px/1.3 var(--font);
  margin: 9px 0;
  color: var(--green);
}
.phonetic {
  font: 14px var(--font);
  display: flex;
  align-items: center;
  gap: 9px;
  flex-wrap: wrap;
  color: var(--muted);
}
.audio-btn {
  color: var(--green);
  background: var(--green-soft);
  padding: 5px 10px;
  border-radius: 20px;
  font-size: 11px;
}
.answer-meanings {
  font-size: 13px;
  line-height: 1.8;
  margin: 17px 0;
}
.answer-meanings p {
  margin: 6px 0;
}
.examples {
  margin: 25px 0 20px;
}
.examples h3 {
  font-size: 12px;
  letter-spacing: 0.5px;
  font-weight: 500;
  color: var(--muted);
  margin-bottom: 16px;
}
.example {
  display: flex;
  gap: 17px;
  margin: 17px 0;
}
.example-number {
  font: 11px/2.2 var(--font);
  color: var(--muted);
}
.example p {
  margin: 0;
}
.example-en {
  font: 17px/1.6 var(--font);
}
.example-zh {
  font-size: 12px;
  color: var(--muted);
  padding-top: 5px;
}
.example small {
  font-size: 9px;
  color: var(--muted);
  opacity: 0.8;
}
details {
  margin: 13px 0;
}
summary {
  cursor: pointer;
  font-size: 12px;
  color: var(--green);
  list-style: none;
  padding: 8px 0;
}
summary:hover {
  opacity: 0.8;
}
summary span {
  float: right;
}
.word-details {
  border-top: 1px solid var(--line);
  padding-top: 6px;
}
.word-details h4 {
  font-size: 12px;
  font-weight: 500;
  color: var(--muted);
}
.word-chips {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.word-chips > span {
  background: var(--panel);
  border-radius: 8px;
  padding: 7px 11px;
  font: 14px var(--font);
}
.word-chips small {
  font: 10px var(--font);
  display: block;
  color: var(--muted);
  margin-top: 3px;
}
.etymology {
  font-size: 13px;
  line-height: 1.9;
}
.source-row {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  color: var(--muted);
  font-size: 9px;
  margin-top: 20px;
}
.source-row a {
  color: var(--muted);
}
.source-row .text-btn {
  font-size: 10px;
}
.muted {
  color: var(--muted);
  font-size: 12px;
}
.page-title {
  margin: 30px 0 35px;
}
.page-title h1 {
  font-size: 30px;
  letter-spacing: 1px;
  font-weight: 500;
  margin: 12px 0;
}
.page-title p {
  font-size: 12px;
  color: var(--muted);
}
.list-controls {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.list-controls > input {
  flex: 1;
  min-width: 180px;
  font-size: 12px;
}
.list-controls select {
  font-size: 12px;
  max-width: 170px;
}
.list-subbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  color: var(--muted);
  margin: 24px 0 12px;
}
.list-subbar > div {
  display: flex;
  gap: 19px;
}
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--surface);
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  text-align: left;
}
th {
  font-size: 10px;
  font-weight: 500;
  color: var(--muted);
  padding: 15px 18px;
  background: var(--panel);
  white-space: nowrap;
}
td {
  padding: 16px 18px;
  border-top: 1px solid var(--line);
  vertical-align: middle;
}
th:first-child,
td:first-child {
  width: 44px;
  padding-right: 0;
}
td small {
  display: block;
  font-size: 9px;
  color: var(--muted);
  margin-top: 5px;
}
.word-link {
  font: 18px var(--font);
  padding: 0;
  text-align: left;
  color: var(--ink);
}
.word-link:hover {
  color: var(--green);
}
.table-meaning {
  max-width: 440px;
  min-width: 200px;
  font-size: 11px;
  line-height: 1.9;
}
.numbers {
  white-space: nowrap;
  color: var(--green);
  font-variant-numeric: tabular-nums;
}
.red {
  color: var(--red);
}
.empty {
  text-align: center;
  color: var(--muted);
  padding: 70px 20px;
}
.list-foot {
  display: flex;
  gap: 20px;
  align-items: center;
  margin: 25px 0;
  font-size: 11px;
  color: var(--muted);
  flex-wrap: wrap;
}
.list-foot > span {
  margin-left: auto;
}
.loading,
.fatal {
  text-align: center;
  padding: 20vh 25px;
}
dialog {
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 18px;
  width: min(690px, calc(100vw - 40px));
  max-height: 88vh;
  padding: 36px 38px;
  box-shadow: 0 25px 100px #0003;
}
dialog::backdrop {
  background: #162a2260;
  backdrop-filter: blur(4px);
}
dialog h2 {
  font-size: 26px;
  font-weight: 500;
  letter-spacing: 0.5px;
  margin: 12px 0 18px;
}
dialog p {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.9;
}
.close-modal {
  position: absolute;
  right: 18px;
  top: 12px;
  font-size: 27px;
  color: var(--muted);
  padding: 0 6px;
}
.modal-actions {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 25px;
}
.modal-mark {
  color: var(--green);
  font-size: 38px;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
  margin: 16px 0;
}
.field input,
.field textarea,
.field select {
  color: var(--ink);
  font-size: 13px;
}
.field input[readonly] {
  background: var(--panel);
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}
.file-drop {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
  border: 1px dashed var(--green);
  padding: 25px;
  background: var(--panel);
  border-radius: 10px;
  color: var(--green);
  font-size: 14px;
  margin: 20px 0;
}
.file-drop input {
  border: 0;
  background: none;
  font-size: 12px;
  max-width: 100%;
}
.import-preview {
  margin-top: 20px;
  white-space: pre-wrap;
  font-size: 12px;
}
.import-preview p {
  font-size: 11px;
}
.setting-row {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  padding: 19px 0;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}
.setting-row small {
  display: block;
  font-size: 10px;
  max-width: 370px;
  color: var(--muted);
  margin-top: 5px;
}
.setting-row select {
  font-size: 12px;
}
.aux-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  color: var(--muted);
  gap: 12px;
  flex-wrap: wrap;
}
.aux-meta label {
  display: flex;
  align-items: center;
  gap: 6px;
}
.aux-prompt {
  background: var(--panel);
  padding: 18px;
  border-radius: 10px;
  margin: 23px 0;
}
.aux-prompt strong {
  font-size: 13px;
  font-weight: 500;
}
.aux-prompt p {
  margin: 6px 0 0;
  font-size: 12px;
}
.letter-display {
  font: 32px/1.8 var(--font);
  min-height: 65px;
  word-break: break-all;
  letter-spacing: 1.5px;
  padding: 10px 0;
}
.ghost {
  color: var(--muted);
  opacity: 0.42;
}
.letter-correct {
  color: var(--yellow);
}
.letter-wrong {
  color: var(--red);
  background: var(--red-soft);
  text-decoration: underline;
}
.whole-correct {
  color: var(--green);
}
.aux-input {
  width: 100%;
  font: 23px/1.6 var(--font);
  padding: 14px 16px;
  border: 1.5px solid var(--line);
  background: var(--bg);
}
.aux-input:focus {
  outline: none;
  border-color: var(--green);
}
.keyboard-list p {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
}
.keyboard-list kbd {
  min-width: 28px;
  text-align: center;
}
.keyboard-list kbd + kbd {
  margin-left: 4px;
}
#toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translate(-50%, 20px);
  background: var(--ink);
  color: var(--bg);
  padding: 12px 22px;
  border-radius: 10px;
  box-shadow: 0 8px 30px #0002;
  font-size: 12px;
  max-width: min(90vw, 680px);
  z-index: 10;
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 0.2s,
    transform 0.2s;
}
#toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}
@media (min-width: 1450px) {
  .main {
    max-width: 1240px;
  }
  .welcome {
    padding-top: 85px;
    padding-bottom: 90px;
  }
  .welcome h1 {
    font-size: 52px;
  }
  .question-card {
    padding: 40px 60px;
  }
}
@media (max-width: 1000px) {
  .header {
    padding: 0 22px;
    gap: 12px;
  }
  .header nav button {
    padding: 8px 15px;
  }
  .save-status {
    font-size: 0;
  }
  .header-right {
    gap: 5px;
  }
  .main {
    padding: 25px 25px 18px;
  }
  .toolbar-set {
    gap: 5px;
  }
  .toolbar label {
    gap: 3px;
  }
  .metrics {
    gap: 16px;
    padding: 20px;
  }
  .metrics > div {
    padding-right: 16px;
  }
  .question-card {
    padding: 27px;
  }
  .meaning-prompt {
    font-size: 19px;
  }
}
@media (max-width: 700px) {
  .header {
    height: auto;
    min-height: 86px;
    padding: 17px 20px;
    flex-wrap: wrap;
  }
  .brand small {
    font-size: 8px;
  }
  .header nav {
    order: 3;
    width: 100%;
    justify-content: center;
  }
  .header nav button {
    flex: 1;
    padding: 7px 12px;
  }
  .main {
    padding: 20px 16px;
  }
  .toolbar {
    gap: 10px;
    align-items: flex-start;
  }
  .toolbar-set {
    flex-wrap: wrap;
    gap: 5px;
  }
  .toolbar label {
    font-size: 10px;
  }
  .toolbar select {
    font-size: 11px;
    padding: 6px;
  }
  .metrics {
    grid-template-columns: 1.2fr 0.8fr 1fr;
    gap: 13px;
    padding: 17px;
  }
  .metrics > div {
    border: 0;
    padding: 0;
  }
  .metrics > div:nth-child(n + 4) {
    display: none;
  }
  .metrics strong {
    font-size: 22px;
  }
  .welcome {
    padding: 50px 0;
  }
  .welcome h1 {
    font-size: 33px;
    letter-spacing: 2px;
  }
  .welcome p {
    font-size: 11px;
  }
  .welcome-actions {
    gap: 9px;
  }
  .large {
    padding: 12px 15px;
    font-size: 12px;
  }
  .key-guide {
    gap: 12px;
    font-size: 10px;
  }
  .practice-footer {
    font-size: 9px;
    gap: 15px;
  }
  .question-card {
    margin: 23px 0;
    padding: 22px 17px;
  }
  .question-top {
    flex-wrap: wrap;
    gap: 8px;
  }
  .question-top .eyebrow {
    font-size: 8px;
  }
  .badge {
    font-size: 9px;
  }
  .meaning-prompt {
    font-size: 17px;
  }
  .input-wrap input {
    font-size: 21px;
    padding: 13px 15px;
  }
  .question-actions {
    gap: 8px;
  }
  .question-actions .primary,
  .question-actions .secondary {
    font-size: 11px;
    padding: 10px 11px;
    gap: 7px;
  }
  .options {
    grid-template-columns: 1fr;
  }
  .answer-heading h2 {
    font-size: 30px;
  }
  .source-row {
    align-items: flex-start;
  }
  .page-title h1 {
    font-size: 25px;
  }
  .list-controls {
    gap: 8px;
  }
  .list-controls select {
    max-width: 48%;
    flex: 1;
  }
  .list-controls > input {
    flex-basis: 100%;
  }
  .list-controls .primary,
  .list-controls .secondary {
    flex: 1;
  }
  .list-subbar {
    align-items: flex-start;
    gap: 12px;
  }
  .list-subbar > div {
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
  }
  .list-foot > span {
    margin-left: 0;
  }
  td,
  th {
    padding: 13px 12px;
  }
  .word-link {
    font-size: 16px;
  }
  dialog {
    padding: 30px 22px;
  }
  .modal-actions .primary,
  .modal-actions .secondary {
    font-size: 11px;
    padding: 10px 12px;
    gap: 9px;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .example-en {
    font-size: 16px;
  }
  .letter-display {
    font-size: 28px;
  }
}

/* v1.0.1 · 单行直接照打，统一黑体与明黄色 */
.input-wrap,
.input-wrap.correct,
.input-wrap.wrong,
.input-wrap.retry {
  border: 0;
  border-bottom: 2px solid var(--line);
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  padding-right: 8px;
}
.input-wrap:focus-within {
  border-bottom-color: var(--green);
  box-shadow: none;
}
.input-wrap.correct {
  border-bottom-color: var(--green);
}
.input-wrap.wrong,
.input-wrap.retry {
  border-bottom-color: var(--red);
}
.input-wrap input {
  border-radius: 0;
  padding: 15px 0;
  font-family: var(--font);
}
.typing-line {
  --typing-size: 34px;
  position: relative;
  min-width: 0;
  overflow: hidden;
  margin: 25px 0 18px;
  border-bottom: 2px solid var(--line);
  cursor: text;
  transition: border-color 0.15s;
}
.typing-line:focus-within {
  border-bottom-color: var(--green);
}
.typing-line .letter-display,
.typing-line .aux-input {
  font-family: var(--font);
  font-size: var(--typing-size);
  font-weight: 400;
  line-height: 1.8;
  letter-spacing: 1.5px;
  font-kerning: none;
  font-variant-ligatures: none;
  text-align: left;
  text-indent: 0;
  box-sizing: border-box;
  padding: 12px 0;
  margin: 0;
  white-space: pre;
}
.typing-line .letter-display {
  position: relative;
  min-height: 85px;
  width: max-content;
  min-width: 100%;
  word-break: normal;
  pointer-events: none;
  transform-origin: left center;
}
.typing-line .aux-input {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: block;
  width: 100%;
  height: 100%;
  min-height: 0;
  border: 0;
  border-radius: 0;
  outline: 0;
  background: transparent;
  color: transparent;
  -webkit-text-fill-color: transparent;
  caret-color: var(--ink);
  box-shadow: none;
}
.typing-line .aux-input:focus {
  border: 0;
  outline: 0;
  box-shadow: none;
}
.typing-line .aux-input::selection {
  background: color-mix(in srgb, var(--green) 16%, transparent);
  color: transparent;
}
.typing-line .ghost {
  color: #b7bfba;
  opacity: 1;
}
:root[data-theme='dark'] .typing-line .ghost {
  color: #78867d;
}
.letter-correct {
  color: #d8c65f;
}
@media (max-width: 700px) {
  .typing-line {
    --typing-size: 28px;
  }
  .typing-line .letter-display {
    min-height: 75px;
  }
}

/* v1.0.2 · 舒展的无衬线字体与居中练习 */
body {
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: 0;
}
.toolbar label,
.question-label,
.feedback,
.practice-footer {
  font-size: 13px;
}
.meaning-prompt {
  font-size: 22px;
  line-height: 1.95;
  font-weight: 400;
  max-width: 820px;
  letter-spacing: 0.25px;
}
.input-wrap input {
  text-align: center;
  font-size: 30px;
  letter-spacing: 0;
}
.question-card .answer-card {
  text-align: center;
}
.answer-heading {
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.answer-heading h2 {
  font-size: 34px;
  font-weight: 700;
  color: var(--ink);
}
.phonetic {
  justify-content: center;
  font-size: 16px;
  gap: 12px;
}
.answer-meanings {
  font-size: 16px;
  line-height: 1.95;
}
.examples h3,
.word-details h4 {
  font-size: 14px;
}
.example {
  justify-content: center;
  gap: 14px;
}
.example > div {
  text-align: center;
}
.example-en {
  font-size: 18px;
  line-height: 1.8;
}
.example-zh {
  font-size: 15px;
  line-height: 1.9;
}
.word-chips {
  justify-content: center;
}
.etymology {
  font-size: 15px;
  line-height: 1.95;
}
.recognition-control {
  margin: 12px 0;
}
.recognition-control .text-btn {
  font-size: 13px;
}
.feedback.skipped,
.input-wrap.skipped {
  color: var(--muted);
}
dialog {
  width: min(760px, calc(100vw - 40px));
  padding: 38px 42px;
}
dialog:has(.typing-line) {
  text-align: center;
}
dialog:has(.typing-line) h2 {
  font-size: 27px;
  line-height: 1.5;
  font-weight: 500;
  margin: 14px 0 22px;
}
dialog:has(.typing-line) .aux-meta {
  justify-content: center;
  gap: 16px;
  font-size: 13px;
}
dialog:has(.typing-line) .aux-prompt {
  padding: 22px 24px;
  margin: 25px 0;
}
dialog:has(.typing-line) .aux-prompt strong {
  font-size: 16px;
  font-weight: 500;
}
dialog:has(.typing-line) .aux-prompt p {
  font-size: 16px;
  line-height: 1.9;
  margin-top: 10px;
}
dialog:has(.typing-line) .modal-actions {
  justify-content: center;
  gap: 18px;
}
dialog:has(.typing-line) #aux-feedback {
  font-size: 13px;
  line-height: 1.8;
}
.typing-line {
  --typing-size: 34px;
  max-width: 620px;
  margin: 32px auto 20px;
}
.typing-line .letter-display,
.typing-line .aux-input {
  letter-spacing: 0;
  padding-left: var(--typing-inset, 0px);
  font-family: Arial, 'Microsoft YaHei', sans-serif;
  line-height: 1.8;
}
.typing-line .letter-display {
  transform-origin: left center;
}
.letter-correct {
  color: var(--yellow);
}
:root[data-theme='dark'] {
  --yellow: #cbb95f;
}
@media (max-width: 700px) {
  body {
    font-size: 15px;
  }
  .meaning-prompt {
    font-size: 19px;
    line-height: 1.9;
  }
  .answer-meanings {
    font-size: 15px;
  }
  .example-zh {
    font-size: 14px;
  }
  dialog {
    padding: 30px 22px;
  }
  .typing-line {
    --typing-size: 29px;
  }
  dialog:has(.typing-line) h2 {
    font-size: 23px;
  }
  dialog:has(.typing-line) .aux-prompt {
    padding: 18px 16px;
  }
  dialog:has(.typing-line) .aux-prompt p {
    font-size: 15px;
  }
}

/* v1.0.3 · 词义优先，模式与次数作为次要信息 */
.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip-path: inset(50%) !important;
  white-space: nowrap !important;
  border: 0 !important;
}
dialog:has(.typing-line) {
  padding: 28px 40px 32px;
}
.aux-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding-right: 29px;
  text-align: left;
  line-height: 1.5;
}
.aux-mode,
.aux-count {
  font-size: 12px;
  font-weight: 400;
  color: var(--muted);
}
.aux-tools {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  text-align: left;
  margin-top: 15px;
  font-size: 12px;
  color: var(--muted);
}
.aux-tools label {
  display: flex;
  align-items: center;
  gap: 7px;
}
dialog:has(.typing-line) .aux-prompt {
  background: transparent;
  padding: 0;
  margin: 32px auto 23px;
  max-width: 640px;
}
dialog:has(.typing-line) .aux-prompt .aux-meaning {
  color: var(--ink);
  font-size: 21px;
  line-height: 1.9;
  font-weight: 500;
  margin: 0;
  letter-spacing: 0.15px;
}
.aux-target-label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 11px;
}
.aux-prompt .aux-meaning:empty {
  display: none;
}
.aux-prompt #aux-hint:empty {
  display: none;
}
.typing-line {
  margin-top: 22px;
  margin-bottom: 16px;
}
dialog:has(.typing-line) #aux-feedback {
  font-size: 12px;
  margin: 12px 0 0;
  color: var(--muted);
}
dialog:has(.typing-line) .modal-actions {
  margin-top: 23px;
}
@media (max-width: 700px) {
  dialog:has(.typing-line) {
    padding: 24px 22px 28px;
  }
  .aux-header {
    padding-right: 24px;
  }
  .aux-tools {
    flex-wrap: wrap;
  }
  .aux-mode,
  .aux-count {
    font-size: 11px;
  }
  dialog:has(.typing-line) .aux-prompt {
    margin-top: 29px;
    margin-bottom: 20px;
  }
  dialog:has(.typing-line) .aux-prompt .aux-meaning {
    font-size: 18px;
    line-height: 1.9;
  }
}

/* 弹窗内反馈与弹窗保持在同一显示层 */
dialog:has(.typing-line) #aux-feedback {
  min-height: 23px;
}
dialog:has(.typing-line) #aux-feedback.is-error {
  color: var(--red);
  font-weight: 500;
}
.dialog-toast {
  display: none;
  margin: 16px 0 0;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--ink);
  font-size: 13px;
  line-height: 1.8;
  text-align: center;
}
.dialog-toast.show {
  display: block;
}

/* 提示与输入合并到同一横线 */
.question-typing-line {
  max-width: 710px;
  margin: 30px auto 18px;
}
.question-typing-line.retry {
  border-bottom-color: var(--red);
}
.hint-hidden {
  display: inline-block;
  position: relative;
  text-align: center;
  color: transparent;
  overflow: hidden;
  vertical-align: bottom;
}
.hint-hidden::after {
  content: '';
  position: absolute;
  left: 1px;
  right: 1px;
  bottom: 0.43em;
  border-bottom: 1px solid var(--muted);
  opacity: 0.65;
}

/* 按词性关联读音与释义；圆角收藏星标 */
.sense-groups {
  margin: 20px auto 26px;
  max-width: 820px;
}
.sense-group {
  padding: 20px 0;
  border-top: 1px solid var(--line);
}
.sense-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px 18px;
  flex-wrap: wrap;
}
.sense-pos {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}
.sense-pronunciation {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}
.sense-ipa {
  font-size: 19px;
  color: var(--ink);
}
.sense-definition {
  font-size: 16px;
  line-height: 1.95;
  color: var(--ink);
  margin: 12px auto 0;
  max-width: 780px;
}
.sense-definition p {
  margin: 5px 0;
}
.sense-audio-status {
  display: block;
  margin-top: 7px;
  min-height: 0;
}
.unmapped-pronunciations {
  font-size: 13px;
  color: var(--muted);
}
.favorite-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  vertical-align: middle;
}
.favorite-star {
  display: block;
  width: 26px;
  height: 26px;
  flex-shrink: 0;
}
.badge.favorite {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.badge.favorite .favorite-star {
  width: 12px;
  height: 12px;
}
@media (max-width: 700px) {
  .sense-header {
    gap: 9px 12px;
  }
  .sense-ipa {
    font-size: 18px;
  }
  .sense-definition {
    font-size: 15px;
  }
}