/* ========================================
   西夏文学习平台 · 组件样式
   ======================================== */

/* ---- 记忆卡片 - */

.flashcard {
  width: 100%;
  max-width: 500px;
  flex: 1;
  min-height: 0;
  margin: 0 auto;
  display: grid;
  grid-template: 1fr / 1fr;
  perspective: 1000px;
  cursor: pointer;
  touch-action: manipulation;
}

.card-side {
  grid-area: 1 / 1;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 20px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  overflow-y: auto;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition);
  box-sizing: border-box;
}
.card-side:hover { box-shadow: var(--shadow-hover); }

.card-front .card-glyph {
  width: 100%;
  flex: 1;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
}
.card-front .card-glyph img {
  display: block;
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  object-position: center;
}

.card-back {
  border-top: 3px solid var(--color-primary);
  padding: 24px 24px;
  justify-content: center;
  overflow-y: auto;
}
.card-glyph-small img {
  max-width: 200px;
  max-height: 200px;
  object-fit: contain;
  margin-bottom: 8px;
  image-rendering: crisp-edges;
  image-rendering: -webkit-optimize-contrast;
}
.card-details { width: 100%; }
.card-field {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 4px 0;
  border-bottom: 1px solid var(--color-border-light);
}
.card-field:last-child { border-bottom: none; }
.field-label {
  font-size: 0.82rem;
  color: var(--color-text-light);
  min-width: 72px;
}
.field-value {
  flex: 1;
  text-align: right;
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.5;
}
.field-value img {
  max-width: 140px;
  max-height: 60px;
  vertical-align: middle;
}
.recon-text {
  font-family: "SF Mono", "Menlo", "Consolas", "Noto Sans", "Arial Unicode MS", sans-serif;
  font-weight: 500;
  white-space: nowrap;
  display: inline-block;
  vertical-align: middle;
}
.recon-info {
  font-size: inherit;
  font-weight: 400;
  color: var(--color-text-light);
  margin-left: 2px;
  vertical-align: middle;
}
.key-hint {
  font-size: 0.72rem;
  opacity: 0.65;
  font-weight: 400;
  margin-left: 2px;
}

.review-card-container {
  max-width: 540px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
}

.review-progress {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}
.review-progress .progress-bar { flex: 1; }

.review-flip-hint {
  font-size: 0.82rem;
  color: var(--color-primary);
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
}
.review-flip-hint:hover { text-decoration: underline; }

.review-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
}
.review-grade-group {
  display: flex;
  gap: 6px;
  justify-content: center;
  flex-wrap: wrap;
}
.bury-btn {
  color: var(--color-text-light);
  font-size: 1rem;
  padding: 2px 10px;
}
.bury-btn:hover {
  color: var(--color-text-secondary);
  background: var(--color-bg-hover);
}
.review-hint {
  margin-top: 12px;
  text-align: center;
}

.review-hint .btn {
  font-size: 0.75rem;
  padding: 2px 8px;
}

.btn-grade {
  min-width: 72px;
  padding: 8px 10px;
  font-size: 0.8rem;
  border-radius: var(--radius-md);
  font-weight: 600;
}
.btn-again { background: #FFEBEE; color: #C42B1C; border-color: #FFCDD2; }
.btn-again:hover { background: #FFCDD2; }
.btn-hard { background: #FFF8E1; color: #B8860B; border-color: #FFE082; }
.btn-hard:hover { background: #FFE082; }
.btn-good { background: #E8F5E9; color: #2E7D32; border-color: #C8E6C9; }
.btn-good:hover { background: #C8E6C9; }
.btn-easy { background: #E3F2FD; color: #1565C0; border-color: #BBDEFB; }
.btn-easy:hover { background: #BBDEFB; }

.btn-danger { background: var(--color-danger); color: #fff; border-color: var(--color-danger); }
.btn-danger:hover { background: #c0392b; }

/* ---- 评级按钮组 ---- */
.pure-toggle {
  font-size: 0.85rem;
  transition: all 0.2s ease;
}
.pure-toggle.pure-active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}
.pure-toggle.pure-active:hover {
  background: var(--color-primary-hover);
}

/* 浏览卡片网格 */
.browse-toolbar {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 16px;
}
.browse-toolbar .input { flex: 1; }
.browse-count {
  font-size: 0.85rem;
  color: var(--color-text-light);
  white-space: nowrap;
}

.browse-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}

.browse-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.browse-card:hover {
  box-shadow: var(--shadow-hover);
  border-color: var(--color-primary);
}
.browse-card img {
  max-width: 120px;
  max-height: 120px;
  object-fit: contain;
  image-rendering: crisp-edges;
  image-rendering: -webkit-optimize-contrast;
}
.browse-card .bc-meaning {
  font-size: 0.78rem;
  color: var(--color-text-secondary);
  text-align: center;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.browse-card .bc-id {
  font-size: 0.7rem;
  color: var(--color-text-light);
}

/* 释义中内联图片（西夏文字形等） */
.meaning-glyph {
  height: 1.1em;
  vertical-align: middle;
  display: inline;
}

/* 搜索卡片不在当前词表时的提示 */
.browse-empty-hint {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  padding: 40px 20px;
  text-align: center;
  grid-column: 1 / -1;
}
.browse-empty-hint-icon {
  font-size: 2rem;
  margin-bottom: 12px;
  line-height: 1;
}
.browse-empty-hint-text {
  font-size: 1.1rem;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.5;
}
.browse-empty-hint-sub {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.4;
}

/* 统计 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
}
.stat-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
}
.stat-card h4 {
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  font-weight: 500;
  margin-bottom: 8px;
}
.stat-big {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-primary);
}

/* ---- 词典 - */
.dict-search-bar {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}
.dict-search-bar .input:first-child { flex: 1; }
.dict-search-bar .input { width: auto; }

.dict-results {
  display: grid;
  gap: 8px;
}

.dict-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  transition: all var(--transition);
  cursor: pointer;
}
.dict-item:hover {
  box-shadow: var(--shadow-hover);
  border-color: var(--color-primary);
}
.dict-item .dict-glyph img { max-width: 40px; max-height: 40px; object-fit: contain; image-rendering: crisp-edges; image-rendering: -webkit-optimize-contrast; }
.dict-item .dict-info { flex: 1; }
.dict-item .dict-meaning { font-size: 0.9rem; }
.dict-item .dict-meta {
  font-size: 0.78rem;
  color: var(--color-text-light);
  margin-top: 2px;
}
.dict-item .dict-corner {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  font-family: var(--font-mono);
}
.dict-item .dict-phonetic img {
  max-width: 32px;
  max-height: 20px;
  vertical-align: middle;
}

/* ---- 知识 - */
.knowledge-list {
  display: grid;
  gap: 12px;
}
.knowledge-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  transition: box-shadow var(--transition);
}
.knowledge-item:hover { box-shadow: var(--shadow-hover); }
.knowledge-item .k-date {
  font-size: 0.78rem;
  color: var(--color-text-light);
  margin-bottom: 4px;
}
.knowledge-item .k-title {
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: 8px;
}
.knowledge-item .k-body {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ---- 用户认证 - */
.auth-form {
  max-width: 360px;
  margin: 0 auto;
}
.form-group {
  margin-bottom: 16px;
}
.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: 6px;
  font-weight: 500;
}
.form-group .input {
  width: 100%;
}
.form-error {
  color: var(--color-danger);
  font-size: 0.85rem;
  margin-bottom: 12px;
  min-height: 20px;
}
.form-footer {
  text-align: center;
  margin-top: 16px;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}
.btn-full {
  width: 100%;
  justify-content: center;
}
.auth-user-info {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}
.auth-avatar {
  font-size: 1rem;
}
.auth-username {
  font-weight: 500;
  color: var(--color-text);
  max-width: 80px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 同步状态指示器 */
.sync-indicator {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.78rem;
  color: var(--color-text-light);
  cursor: pointer;
}
.sync-indicator:hover { color: var(--color-text-secondary); }
.sync-indicator.syncing { color: var(--color-primary); }
.sync-indicator .sync-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-success);
}
.sync-indicator.syncing .sync-dot {
  background: var(--color-primary);
  animation: syncPulse 1s ease-in-out infinite;
}
@keyframes syncPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.quiz-container {
  max-width: 640px;
  margin: 0 auto;
}
.quiz-settings {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin: 20px 0;
}
.quiz-settings label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.quiz-progress {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}
.quiz-progress .progress-bar { flex: 1; }

.quiz-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  min-height: 200px;
}
.quiz-question {
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 20px;
}
.quiz-question .highlight { color: var(--color-primary); font-weight: 600; }

/* ===== 挖空测验样式 v2 ===== */
.quiz-cloze-header {
  font-size: 0.82rem;
  color: var(--color-text-light);
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--color-border);
}
.quiz-cloze-body {
  font-size: 0.9rem;
  line-height: 1.85;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  color: var(--color-text);
  max-height: 340px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
}
.quiz-cloze-prompt {
  margin-top: 12px;
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  text-align: center;
  font-weight: 500;
}
.quiz-blank-highlight {
  background: rgba(128, 0, 32, 0.12);
  border-bottom: 2.5px solid var(--color-primary);
  padding: 1px 10px;
  border-radius: 4px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 2px;
}

.quiz-options { display: flex; flex-direction: column; gap: 8px; }
.quiz-option {
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition);
  font-size: 0.92rem;
}
.quiz-option:hover {
  background: var(--color-bg-hover);
  border-color: var(--color-text-light);
}
.quiz-option.selected {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}
.quiz-option.correct {
  border-color: var(--color-success);
  background: var(--color-success-light);
}
.quiz-option.wrong {
  border-color: var(--color-danger);
  background: var(--color-danger-light);
}
.quiz-option.reveal-correct {
  border-color: var(--color-success);
  background: var(--color-success-light);
  opacity: 0.7;
}

/* 多选样式 */
.quiz-option.multi-option {
  display: flex;
  align-items: center;
  gap: 8px;
}
.multi-check {
  font-size: 1.2rem;
  flex-shrink: 0;
  width: 22px;
  text-align: center;
  color: var(--color-text-light);
}
.quiz-option.multi-option.selected {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
}
.quiz-option.multi-option.selected .multi-check {
  color: var(--color-primary);
}
.quiz-option.multi-option.correct {
  background: var(--color-success-light);
  border-color: var(--color-success);
}
.quiz-option.multi-option.correct .multi-check {
  color: var(--color-success);
}
.quiz-option.multi-option.wrong {
  background: var(--color-danger-light);
  border-color: var(--color-danger);
}
.quiz-option.multi-option.wrong .multi-check {
  color: var(--color-danger);
}

.quiz-result {
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
}
.quiz-result.correct {
  background: var(--color-success-light);
  color: var(--color-success);
}
.quiz-result.wrong {
  background: var(--color-danger-light);
  color: var(--color-danger);
}

.quiz-actions { text-align: center; margin-top: 16px; }

.quiz-final { text-align: center; padding: 20px 0; }
.quiz-score { margin-bottom: 24px; }

.score-circle {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
  border: 6px solid var(--color-primary);
}
.score-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
}

.quiz-review { text-align: left; margin-bottom: 20px; }
.quiz-review-item {
  padding: 12px;
  border-bottom: 1px solid var(--color-border-light);
}
.quiz-review-item:last-child { border-bottom: none; }
.quiz-review-item .qr-question { font-weight: 600; margin-bottom: 4px; }
.quiz-review-item .qr-answer { font-size: 0.85rem; }
.quiz-review-item .qr-answer.correct { color: var(--color-success); }
.quiz-review-item .qr-answer.wrong { color: var(--color-danger); }

/* fill-in-the-blank input */
.quiz-fill-input {
  padding: 8px 12px;
  border: none;
  border-bottom: 2px solid var(--color-border);
  font-family: var(--font-sans);
  font-size: 1rem;
  outline: none;
  width: 200px;
  transition: border-color var(--transition);
}
.quiz-fill-input:focus { border-bottom-color: var(--color-primary); }
.quiz-fill-input.correct { border-bottom-color: var(--color-success); }
.quiz-fill-input.wrong { border-bottom-color: var(--color-danger); }

/* ---- 认证 Tab 切换 ---- */
.auth-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 20px;
}
.auth-tab {
  flex: 1;
  padding: 10px 12px;
  border: none;
  background: transparent;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all var(--transition);
  text-align: center;
}
.auth-tab:hover { color: var(--color-text); background: var(--color-bg-hover); }
.auth-tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}
.auth-tab-content { display: none; }
.auth-tab-content.active { display: block; }

/* ---- 每日小知识 — 卡片浏览 ---- */
.knowledge-list {
  display: block;
  max-width: 800px;
  margin: 0 auto;
  width: 100%;
}

.knowledge-card-browser {
  position: relative;
}

.knowledge-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 40px 36px;
  min-height: 320px;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition);
  display: flex;
  flex-direction: column;
  width: 100%;
  box-sizing: border-box;
}
.knowledge-card:hover { box-shadow: var(--shadow-hover); }
/* 可点击翻页提示 */
.knowledge-card .k-body {
  cursor: pointer;
}
.knowledge-card .k-body::after {
  content: '';
  display: block;
  text-align: center;
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin-top: 8px;
}

.knowledge-card .k-today-badge {
  display: inline-block;
  background: var(--color-primary);
  color: white;
  font-size: 0.8rem;
  padding: 3px 12px;
  border-radius: 4px;
  margin-bottom: 12px;
  align-self: flex-start;
}

.knowledge-card .k-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
  line-height: 1.4;
  word-break: break-word;
  overflow-wrap: break-word;
}

.knowledge-card .k-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}
.knowledge-card .k-tag {
  display: inline-block;
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  font-size: 0.82rem;
  padding: 3px 10px;
  border-radius: 4px;
}

.knowledge-card .k-body {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--color-text);
  flex: 1;
  overflow-y: auto;
  word-break: break-word;
  overflow-wrap: break-word;
}

.knowledge-card .k-actions {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border-light);
}

.knowledge-card .k-counter {
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-top: 16px;
}

/* 知识卡片标题选择器 */
.knowledge-select {
  padding: 6px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  background: var(--color-bg);
  color: var(--color-text);
  cursor: pointer;
  max-width: 260px;
  outline: none;
}
.knowledge-select:focus {
  border-color: var(--color-primary);
}
.knowledge-select option {
  font-size: 0.85rem;
}

/* 测验题卡片名称链接 */
.quiz-cloze-header a:hover {
  text-decoration: underline !important;
}

/* 「見XXXX」引用标注 */
.see-ref-note {
  font-size: 0.72rem;
  color: var(--color-text-light);
  margin-left: 4px;
}

/* 关于本站 — 简约卡片风格 */
#page-about .about-container {
  max-width: 720px;
  margin: 0 auto;
  padding: 12px 16px 40px;
}
#page-about .about-container > p {
  font-size: 0.94rem;
  line-height: 1.9;
  color: var(--color-text-secondary);
  margin: 0 0 18px 0;
}
#page-about .about-container .about-goal {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: 24px;
  border: 1px solid var(--color-primary-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-primary-light);
}
#page-about .about-container .about-goal .goal-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--color-primary-border);
}
#page-about .about-container .about-goal .goal-item:last-child {
  border-bottom: none;
}
#page-about .about-container .about-goal .goal-dot {
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-top: 9px;
  background: var(--color-primary);
}
#page-about .about-container .about-goal .goal-item:nth-child(1) .goal-dot { background: #8B1A2B; }
#page-about .about-container .about-goal .goal-item:nth-child(2) .goal-dot { background: #A83244; }
#page-about .about-container .about-goal .goal-item:nth-child(3) .goal-dot { background: #C4445A; }
#page-about .about-container .about-goal .goal-item:nth-child(4) .goal-dot { background: #D96073; }
#page-about .about-container .about-goal .goal-text { flex: 1; min-width: 0; }
#page-about .about-container .about-goal .goal-text strong {
  display: block;
  font-size: 0.88rem;
  color: var(--color-text);
  margin-bottom: 3px;
}
#page-about .about-container .about-goal .goal-text span {
  display: block;
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--color-text-secondary);
}
#page-about .about-container .about-thanks {
  margin-bottom: 24px;
  padding: 0;
}
#page-about .about-container .about-thanks .thanks-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 6px;
}
#page-about .about-container .about-thanks p {
  margin: 3px 0;
  padding: 0;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  border: none;
}
#page-about .about-container .about-contact {
  margin-top: 28px;
  text-align: center;
  padding: 22px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg);
}
#page-about .about-container .about-contact p {
  margin: 0 0 6px 0;
  font-size: 0.85rem;
  color: var(--color-text-light);
}
#page-about .about-container .about-contact .contact-email {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
}
#page-about .about-container .about-contact .contact-email:hover {
  text-decoration: underline;
}

/* 知识卡片导航按钮 */
.knowledge-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 20px;
}

.knowledge-nav-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  cursor: pointer;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  color: var(--color-text-secondary);
}
.knowledge-nav-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-light);
}
.knowledge-nav-btn:disabled {
  opacity: 0.3;
  cursor: default;
  border-color: var(--color-border);
  color: var(--color-text-light);
  background: transparent;
}

.knowledge-nav-dots {
  display: flex;
  gap: 6px;
}
.knowledge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-border);
  transition: all var(--transition);
  cursor: pointer;
}
.knowledge-dot.active { background: var(--color-primary); width: 24px; border-radius: 4px; }
.knowledge-dot:hover { background: var(--color-text-light); }

/* ---- 卡片设置面板 ---- */
.settings-group {
  margin-bottom: 20px;
}
.settings-group h4 {
  font-size: 0.9rem;
  color: var(--color-text);
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--color-border-light);
}
.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
}
.settings-label {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
}
.settings-desc {
  font-size: 0.78rem;
  color: var(--color-text-light);
  margin-top: 2px;
}
.settings-row select,
.settings-row input[type="number"] {
  width: 80px;
  text-align: center;
}
.settings-toggle {
  position: relative;
  width: 44px;
  height: 24px;
  border-radius: 12px;
  background: var(--color-border);
  cursor: pointer;
  transition: background var(--transition);
  border: none;
  padding: 0;
}
.settings-toggle.on {
  background: var(--color-primary);
}
.settings-toggle::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: white;
  transition: transform var(--transition);
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.settings-toggle.on::after {
  transform: translateX(20px);
}

/* ---- 输入练习 ---- */
.practice-container {
  max-width: 480px;
  margin: 0 auto;
}

.practice-progress-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}
.practice-progress-bar .progress-bar { flex: 1; }

.practice-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 32px 24px 24px;
  box-shadow: var(--shadow-card);
}

.practice-glyph {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  padding: 16px;
}
.practice-glyph img {
  max-width: 200px;
  max-height: 200px;
  object-fit: contain;
  object-position: center;
  image-rendering: crisp-edges;
  image-rendering: -webkit-optimize-contrast;
}

/* 输入显示槽 */
.practice-input-display {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin: 16px 0 12px;
}
.pi-slot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 52px;
  font-size: 1.4rem;
  font-weight: 700;
  font-family: var(--font-mono);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-secondary);
  color: var(--color-text);
  transition: all var(--transition);
}
.pi-slot.filled {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  color: var(--color-primary);
}
.pi-slot.cursor {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(128,0,32,0.15);
  animation: piBlink 1s ease-in-out infinite;
}
@keyframes piBlink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.pi-space {
  width: 16px;
}

/* 反馈信息 */
.practice-feedback {
  text-align: center;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 8px;
  border-radius: var(--radius-md);
  margin: 8px 0;
  display: none;
}
.practice-feedback.correct {
  background: var(--color-success-light);
  color: var(--color-success);
  display: block;
}
.practice-feedback.wrong {
  background: var(--color-danger-light);
  color: var(--color-danger);
  display: block;
}

/* 下一题按钮 */
.practice-next-btn {
  text-align: center;
  margin: 8px 0;
  display: none;
}

/* 数字键盘 */
.practice-numpad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  max-width: 280px;
  margin: 16px auto 0;
}
.np-btn {
  height: 52px;
  font-size: 1.2rem;
  font-weight: 600;
  font-family: var(--font-mono);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  cursor: pointer;
  transition: all var(--transition);
  color: var(--color-text);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  user-select: none;
  -webkit-user-select: none;
  position: relative;
  line-height: 1;
}
.np-btn:hover {
  background: var(--color-bg-hover);
  border-color: var(--color-text-light);
}
.np-btn:active {
  transform: scale(0.95);
  background: var(--color-bg-active);
}
.np-btn .np-main {
  font-size: 1.3rem;
  font-weight: 700;
}
.np-btn .np-sub {
  font-size: 0.65rem;
  color: var(--color-text-light);
  font-weight: 400;
  margin-top: 1px;
}
.np-btn-wide {
  font-size: 1rem;
}
.np-btn-wide .np-main {
  font-size: 1rem;
}
.np-btn-ok {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
  font-size: 1.3rem;
}
.np-btn-ok:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
}
.np-btn-ok .np-main {
  color: white;
}
.np-btn-ok:disabled {
  opacity: 0.4;
  cursor: default;
}

/* ========================================
   响应式 · 组件适配
   ======================================== */

/* 平板 */
@media (max-width: 1024px) {
  .flashcard { max-width: 450px; }
  .card-side { padding: 24px 20px; }
  .card-front .card-glyph { }
  .card-front .card-glyph img { max-width: 100%; max-height: 100%; }
  .card-glyph-small img { max-width: 140px; max-height: 140px; }
  .card-field { flex-direction: column; gap: 2px; }
  .field-value { font-size: 0.9rem; }
  .field-value img { max-width: 120px; max-height: 36px; }
  .stats-grid { grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .practice-numpad { max-width: 260px; }
  .dic-character { font-size: 6rem; }
  .knowledge-entry { padding: 28px 24px; }
}

/* 手机 */
@media (max-width: 768px) {
  /* 记忆卡片 */
  .flashcard { max-width: 100%; }
  .card-side { padding: 20px 16px; }
  .card-front .card-glyph { padding: 6px; }
  .card-front .card-glyph img { max-width: 100%; max-height: 100%; }
  .card-glyph-small img { max-width: 120px; max-height: 120px; }
  .card-field { flex-direction: column; gap: 2px; }
  .field-value { font-size: 0.85rem; }
  .field-value img { max-width: 100px; max-height: 30px; }
  .field-label { min-width: auto; font-size: 0.7rem; }
  .field-value { text-align: left; font-size: 0.85rem; }
  .field-value img { max-width: 90px; max-height: 28px; }
  .card-back { overflow-y: auto; padding-bottom: 16px; }
  #page-flashcard .flashcard {
    max-height: 85vh;
    overflow: hidden;
  }

  /* 评分按钮 — 一行排列，为卡片省空间 */
  .review-grade-group {
    display: flex;
    flex-direction: row;
    gap: 4px;
    width: 100%;
  }
  .review-grade-group .btn { flex: 1; padding: 6px 4px; font-size: 0.72rem; white-space: nowrap; }
  .review-actions { flex-direction: column; gap: 4px; margin-top: 4px; }

  /* 浏览 */
  .browse-toolbar { flex-direction: column; gap: 8px; }
  .browse-toolbar .input { width: 100%; }
  .browse-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .browse-card { padding: 10px; }
  .browse-card .bc-glyph img { max-width: 40px; max-height: 40px; }
  .browse-card .bc-corner { font-size: 0.65rem; }

  /* 统计 */
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .stat-card { padding: 14px; }
  .stat-card h4 { font-size: 0.8rem; }
  .stat-big { font-size: 1.5rem; }

  /* 词典 */
  .dict-search-bar { flex-direction: column; gap: 8px; }
  .dict-search-bar .input { width: 100%; }
  .dict-item { flex-direction: column; gap: 8px; padding: 12px; }
  .dic-character { font-size: 4rem; min-width: auto; }
  .dict-result-info { flex-wrap: wrap; }
  .dict-pager { flex-wrap: wrap; justify-content: center; gap: 4px; }
  .dict-pager .page-btn { min-width: 28px; height: 28px; font-size: 0.78rem; }

  /* 每日小知识 */
  .knowledge-entry { padding: 20px 16px; }
  .knowledge-entry h2 { font-size: 1.1rem; }
  .knowledge-nav { gap: 4px; }
  .knowledge-nav-btn { padding: 6px 10px; font-size: 0.78rem; }
  .knowledge-card { padding: 24px 20px; }
  .knowledge-card .k-title { font-size: 1.1rem; }
  .knowledge-card .k-body { font-size: 0.95rem; line-height: 1.7; }
  .knowledge-card .k-actions { flex-direction: column; gap: 6px; }
  .knowledge-card .k-actions .btn { width: 100%; }
  .knowledge-nav-dots { gap: 4px; }
  .knowledge-quiz-link { width: 100%; text-align: center; }

  /* 测验 */
  .quiz-card { padding: 20px 16px; }
  .quiz-question { font-size: 1rem; }
  .quiz-options { gap: 8px; }
  .quiz-option { padding: 12px; font-size: 0.88rem; }
  .quiz-settings { flex-direction: column; gap: 10px; align-items: stretch; }
  .quiz-settings label { flex-direction: column; gap: 4px; }
  .quiz-settings select { width: 100%; }

  /* 输入练习 */
  .practice-card { padding: 20px 16px; }
  .practice-glyph { min-height: 140px; padding: 8px; }
  .practice-glyph img { max-width: 140px; max-height: 140px; }
  .pi-slot { width: 38px; height: 44px; font-size: 1.2rem; }
  .practice-numpad { max-width: 240px; gap: 6px; }
  .np-btn { height: 48px; font-size: 1.1rem; }
  .np-btn .np-main { font-size: 1.15rem; }

  /* 仪表盘底部分栏 */
  .dashboard-bottom { grid-template-columns: 1fr; }

  /* 弹窗中的 auth tabs */
  .auth-tabs { gap: 0; }
  .auth-tab { padding: 8px 12px; font-size: 0.85rem; }
}

/* 小屏手机 */
@media (max-width: 420px) {
  .card-side { padding: 16px 12px; }
  .card-front .card-glyph { }
  .card-front .card-glyph img { max-width: 100%; max-height: 100%; }
  .field-value img { max-width: 56px; max-height: 28px; }

  .browse-grid { grid-template-columns: repeat(2, 1fr); gap: 6px; }
  .browse-card { padding: 8px; }

  .dic-character { font-size: 3rem; }

  .practice-glyph { min-height: 120px; }
  .practice-glyph img { max-width: 120px; max-height: 120px; }

  .knowledge-card { padding: 16px 14px; }
  .knowledge-card .k-title { font-size: 1rem; }
  .knowledge-card .k-body { font-size: 0.88rem; line-height: 1.6; }

  .review-grade-group { grid-template-columns: 1fr 1fr; gap: 6px; }
  .review-grade-group .btn { padding: 8px 6px; font-size: 0.78rem; }
}

/* ---- 词性筛选栏 ---- */
.pos-filter-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.pos-filter-label {
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}
.pos-filter-btn {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  padding: 4px 14px;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  background: var(--color-bg);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}
.pos-filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-light);
}
.pos-filter-btn.active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}
.pos-filter-count {
  font-size: 0.78rem;
  color: var(--color-text-light);
  margin-left: auto;
}

/* 核心词筛选按钮分隔符 */
.pos-filter-sep {
  width: 1px;
  height: 22px;
  background: var(--color-border);
  margin: 0 2px;
}

/* 核心词按钮（强调样式） */
.core-filter-btn {
  font-weight: 600;
  letter-spacing: 0.5px;
}
.core-filter-btn.active {
  background: #f5a623 !important;
  border-color: #f5a623 !important;
  color: white !important;
  box-shadow: 0 2px 8px rgba(245, 166, 35, 0.3);
}

/* 顶部栏中的核心词按钮 */
.header-core-btn {
  font-size: 0.78rem;
  padding: 5px 14px;
  border-radius: 18px;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all 0.2s;
  line-height: 1.4;
  font-weight: 600;
  font-family: var(--font-sans);
}
.header-core-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.header-core-btn.active {
  background: #f5a623;
  border-color: #f5a623;
  color: white;
  box-shadow: 0 2px 8px rgba(245, 166, 35, 0.3);
}

/* 核心词下拉选择器 */
.header-core-select {
  font-size: 0.78rem;
  padding: 4px 28px 4px 12px;
  border-radius: 16px;
  border: 1.5px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
  line-height: 1.5;
  font-weight: 500;
  font-family: var(--font-sans);
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23999' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 28px;
  min-width: 110px;
}
.header-core-select:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background-color: var(--color-bg-hover, #f8f8ff);
}
.header-core-select.active {
  border-color: #f5a623;
  color: #e65100;
  background-color: #fff8e1;
}
.header-core-select.active:hover {
  border-color: #e65100;
  background-color: #fff3cd;
}
.header-core-select option {
  color: var(--color-text);
  background: var(--color-bg);
  padding: 4px 8px;
}

/* 顶部卡片计数徽章 */
.card-count-badge {
  font-size: 0.75rem;
  color: var(--color-text-light);
  background: var(--color-bg-secondary, #f5f5f5);
  padding: 2px 10px;
  border-radius: 12px;
  white-space: nowrap;
  vertical-align: middle;
  display: inline-flex;
  align-items: center;
  line-height: 1.4;
}

/* 反转卡片背面的核心词徽章 */
.core-badge {
  display: inline-block;
  background: #f5a623;
  color: white;
  font-size: 0.7rem;
  padding: 1px 8px;
  border-radius: 10px;
  margin: 0 0 8px 6px;
  vertical-align: middle;
}

/* 设置面板中的词性筛选 */
.pos-filter-inline {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.pos-filter-inline .pos-filter-btn {
  font-size: 0.8rem;
  padding: 3px 12px;
}

/* 手机端筛选栏 */
@media (max-width: 768px) {
  .pos-filter-bar { gap: 6px; }
  .pos-filter-btn { font-size: 0.78rem; padding: 3px 10px; }
  .pos-filter-count { font-size: 0.72rem; }
}

/* ---- 学习计划进度条 ---- */
.study-plan-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: linear-gradient(135deg, #fdf6f0, #fef9f4);
  border: 1px solid #e8d5c8;
  border-radius: 8px;
  margin-bottom: 10px;
  font-size: 0.82rem;
}
.study-plan-bar .plan-label {
  font-weight: 600;
  color: var(--color-primary);
  white-space: nowrap;
}
.study-plan-bar .plan-scope {
  font-size: 0.75rem;
  color: white;
  background: var(--color-primary);
  padding: 1px 7px;
  border-radius: 8px;
  white-space: nowrap;
  font-weight: 500;
}
.study-plan-bar .plan-progress-bar {
  flex: 1;
  height: 6px;
  background: #e8ddd0;
  border-radius: 3px;
  overflow: hidden;
  min-width: 60px;
}
.study-plan-bar .plan-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), #c0392b);
  border-radius: 3px;
  transition: width 0.4s ease;
}
.study-plan-bar .plan-count {
  font-weight: 600;
  color: var(--color-primary);
  white-space: nowrap;
}
.study-plan-bar .plan-sets {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  white-space: nowrap;
}
.study-plan-bar .plan-eta {
  font-size: 0.75rem;
  color: var(--color-primary);
  white-space: nowrap;
  font-weight: 500;
}

/* ---- 庆祝弹窗 ---- */
.celebration-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 9999;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.45);
  animation: fadeIn 0.3s ease;
}
.celebration-overlay.show { display: flex; }

.celebration-box {
  background: var(--color-bg);
  border-radius: 16px;
  padding: 40px 36px 32px;
  text-align: center;
  max-width: 380px;
  width: 90%;
  box-shadow: 0 20px 60px rgba(0,0,0,0.25);
  animation: celebBounceIn 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
  z-index: 10000;
}
.celebration-icon {
  font-size: 3rem;
  margin-bottom: 12px;
  animation: celebPulse 1s ease-in-out infinite alternate;
}
.celebration-box h2 {
  font-size: 1.3rem;
  color: var(--color-primary);
  margin-bottom: 8px;
}
.celebration-box p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
  line-height: 1.5;
}
.celebration-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}
.celebration-actions .btn {
  min-width: 120px;
}

@keyframes fadeIn {
  from { opacity: 0; } to { opacity: 1; }
}
@keyframes celebBounceIn {
  0% { transform: scale(0.5); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}
@keyframes celebPulse {
  from { transform: scale(1); } to { transform: scale(1.15); }
}

/* ---- 文献类型页面 ---- */
.lit-category {
  margin-bottom: 12px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  overflow: hidden;
}
.lit-cat-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  cursor: pointer;
  background: var(--color-bg);
  transition: background 0.2s;
  font-weight: 600;
  font-size: 0.95rem;
}
.lit-cat-header:hover { background: var(--color-bg-hover); }
.lit-cat-desc {
  padding: 0 16px 10px 40px;
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}
.lit-cat-count {
  margin-left: auto;
  font-size: 0.75rem;
  color: var(--color-text-light);
  font-weight: 400;
}
.lit-toggle {
  font-size: 0.75rem;
  color: var(--color-text-light);
  transition: transform 0.2s;
  width: 14px;
  text-align: center;
  flex-shrink: 0;
}
.lit-toggle.open { transform: rotate(90deg); }
.lit-children { border-top: 1px solid var(--color-border-light); }
.lit-sub { border-bottom: 1px solid var(--color-border-light); }
.lit-sub:last-child { border-bottom: none; }
.lit-sub-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px 10px 32px;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.88rem;
}
.lit-sub-header:hover { background: var(--color-bg-hover); }
.lit-sub-desc {
  padding: 0 16px 8px 44px;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}
.lit-work { border-top: 1px solid var(--color-border-light); }
.lit-work-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px 8px 48px;
  cursor: pointer;
  font-size: 0.85rem;
}
.lit-work-header:hover { background: var(--color-bg-hover); color: var(--color-primary); }
.lit-work-name { color: var(--color-primary); font-weight: 500; }
.lit-work-body {
  padding: 0 16px 12px 60px;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--color-text);
}
.lit-work-desc { margin-bottom: 6px; }
.lit-work-desc img.lit-inline-img {
  height: 1.1em;
  vertical-align: middle;
  display: inline;
  margin: 0 1px;
}
.lit-work-loc {
  font-size: 0.78rem;
  color: var(--color-text-light);
  padding: 4px 8px;
  background: var(--color-bg-hover);
  border-radius: 6px;
  display: inline-block;
}

/* 子部小节标题（如"1. 兵家""2. 医家"等） */
.lit-section-label {
  border-top: 1px solid var(--color-border-light);
  padding: 6px 16px 6px 48px;
}
.lit-section-label-text {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 2px;
}
.lit-section-label-desc {
  font-size: 0.78rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  padding: 2px 0 4px 0;
}
/* 核心词等级徽章 */
.core-badge-l1 {
  background: #e8f5e9;
  color: #2e7d32;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 600;
}
.core-badge-l2 {
  background: #fff3e0;
  color: #e65100;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 600;
}

@keyframes confettiFall {
  0% { transform: translateY(0) rotate(0deg); opacity: 1; }
  100% { transform: translateY(100vh) rotate(720deg); opacity: 0; }
}

@media (max-width: 768px) {
  .celebration-box { padding: 28px 20px 24px; }
  .celebration-icon { font-size: 2.4rem; }
  .celebration-box h2 { font-size: 1.1rem; }
}

/* ---- 学习日选择器 ---- */
.day-picker {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.day-picker .day-label {
  display: inline-block;
  padding: 4px 12px;
  font-size: 0.82rem;
  border: 1px solid var(--color-border);
  border-radius: 16px;
  background: var(--color-bg);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all 0.15s;
  user-select: none;
}
.day-picker .day-label:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.day-picker .day-label.active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}
.plan-hint {
  font-size: 0.78rem;
  color: var(--color-text-secondary);
  padding: 4px 0;
  line-height: 1.4;
}

/* ── 词汇量测试 ── */
.vt-welcome {
  text-align: center;
  padding: 40px 20px;
  max-width: 560px;
  margin: 0 auto;
}
.vt-welcome-icon {
  font-size: 3rem;
  margin-bottom: 12px;
}
.vt-welcome h2 {
  font-size: 1.5rem;
  margin-bottom: 8px;
  color: var(--color-text);
}
.vt-desc {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 28px;
}
.vt-mode-cards {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin-bottom: 24px;
}
.vt-mode-card {
  background: var(--color-card-bg);
  border: 2px solid var(--color-border);
  border-radius: 14px;
  padding: 28px 24px;
  cursor: pointer;
  flex: 1;
  max-width: 240px;
  transition: border-color 0.2s, box-shadow 0.2s;
  text-align: center;
}
@media (hover: hover) {
.vt-mode-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 4px 16px rgba(139, 26, 43, 0.12);
}
}
.vt-mode-icon {
  font-size: 2.2rem;
  margin-bottom: 8px;
}
.vt-mode-name {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}
.vt-mode-detail {
  font-size: 0.9rem;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: 6px;
}
.vt-mode-desc {
  font-size: 0.82rem;
  color: var(--color-text-light);
}
.vt-note {
  font-size: 0.8rem;
  color: var(--color-text-light);
  font-style: italic;
}
.vt-testing {
  max-width: 480px;
  margin: 0 auto;
  padding: 0 16px;
}
.vt-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}
.vt-header-left {
  display: flex;
  align-items: center;
  gap: 10px;
}
.vt-mode-badge {
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 0.78rem;
  padding: 3px 10px;
  border-radius: 10px;
  font-weight: 500;
}
.vt-lives {
  font-size: 0.9rem;
  letter-spacing: 1px;
}
.vt-stage-info {
  text-align: center;
  font-size: 0.78rem;
  color: var(--color-text-light);
  margin-bottom: 10px;
  font-weight: 500;
}
.vt-progress-text {
  font-size: 0.85rem;
  color: var(--color-text-light);
}
.vt-timer {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
}
.vt-progress-bar {
  height: 4px;
  background: var(--color-border);
  border-radius: 2px;
  margin-bottom: 24px;
  overflow: hidden;
}
.vt-progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 2px;
  transition: width 0.3s ease;
}
.vt-card-area {
  min-height: 240px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 12px 20px 8px;
}
.vt-glyph {
  margin-bottom: 6px;
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.vt-glyph-img {
  max-width: 180px;
  max-height: 160px;
  object-fit: contain;
}
.vt-glyph-fallback {
  font-size: 2rem;
  color: var(--color-text-light);
}
.vt-card-seq-label {
  font-size: 0.78rem;
  color: var(--color-text-light);
  font-variant-numeric: tabular-nums;
  opacity: 0.5;
}
.vt-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 0 16px 12px;
  max-width: 480px;
  margin: 0 auto;
}
.vt-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border: 1.5px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-card-bg);
  cursor: pointer;
  font-family: inherit;
  font-size: 0.92rem;
  text-align: left;
}
.vt-option:active {
  transform: scale(0.98);
}
.vt-option.hover {
  border-color: var(--color-primary) !important;
  background: var(--color-primary-light) !important;
}
.vt-opt-letter {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-bg-secondary);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-text-light);
}
.vt-opt-text {
  flex: 1;
  line-height: 1.4;
  color: var(--color-text);
}
.vt-opt-correct {
  border-color: #2ecc71 !important;
  background: #f0fdf4 !important;
}
.vt-opt-correct .vt-opt-letter {
  background: #2ecc71;
  color: white;
}
.vt-opt-wrong {
  border-color: #e74c3c !important;
  background: #fef2f2 !important;
}
.vt-opt-wrong .vt-opt-letter {
  background: #e74c3c;
  color: white;
}
.vt-opt-selected {
  border-color: var(--color-primary) !important;
  background: var(--color-primary-light) !important;
}
.vt-opt-selected .vt-opt-letter {
  background: var(--color-primary);
  color: white;
}
.vt-shortcut-hint {
  text-align: center;
  font-size: 0.72rem;
  color: var(--color-text-light);
  margin-top: 6px;
  opacity: 0.45;
}
.vt-result {
  max-width: 520px;
  margin: 0 auto;
  padding: 24px 20px;
}
.vt-result-header {
  text-align: center;
  margin-bottom: 24px;
}
.vt-result-badge {
  display: inline-block;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: 12px;
  margin-bottom: 8px;
}
.vt-result-badge.excellent {
  background: #fef3c7;
  color: #d97706;
}
.vt-result-badge.good {
  background: #d1fae5;
  color: #059669;
}
.vt-result-title {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}
.vt-result-main {
  text-align: center;
  padding: 24px 0;
  margin-bottom: 20px;
}
.vt-estimate-number {
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.1;
  margin-bottom: 4px;
  font-variant-numeric: tabular-nums;
}
.vt-estimate-label {
  font-size: 1rem;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}
.vt-estimate-bar {
  height: 8px;
  background: var(--color-border);
  border-radius: 4px;
  max-width: 320px;
  margin: 0 auto;
  overflow: hidden;
}
.vt-estimate-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), #e8919f);
  border-radius: 4px;
  transition: width 1s ease;
}
.vt-breakdown {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 16px 20px;
  margin-bottom: 20px;
}
.vt-breakdown-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}
.vt-breakdown-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
  font-size: 0.92rem;
}
.vt-bd-label {
  color: var(--color-text);
}
.vt-bd-value {
  font-weight: 600;
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
}
.vt-stats {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
}
.vt-stat-item {
  flex: 1;
  text-align: center;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 12px 8px;
}
.vt-stat-num {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
}
.vt-stat-label {
  font-size: 0.75rem;
  color: var(--color-text-light);
  margin-top: 2px;
}
.vt-result-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
}

/* ── 词汇量测试 · 错题回顾 ── */
.vt-review {
  max-width: 560px;
  margin: 0 auto;
  padding: 16px 20px;
}
.vt-review-header {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 16px;
}
.vt-review-header h3 {
  font-size: 1.1rem;
  color: var(--color-text);
  margin: 0;
}
.vt-review-count {
  font-size: 0.82rem;
  color: var(--color-text-light);
}
.vt-review-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.vt-review-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-card-bg);
}
.vt-review-card-left {
  display: flex;
  align-items: center;
  gap: 8px;
}
.vt-review-num {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #fef2f2;
  color: #e74c3c;
  font-size: 0.75rem;
  font-weight: 600;
  flex-shrink: 0;
}
.vt-review-glyph-wrap {
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.vt-review-glyph {
  max-width: 48px;
  max-height: 48px;
  object-fit: contain;
}
.vt-review-fallback {
  font-size: 1rem;
  color: var(--color-text-light);
}
.vt-review-card-right {
  flex: 1;
  min-width: 0;
}
.vt-review-seq {
  font-size: 0.78rem;
  color: var(--color-text-light);
  font-variant-numeric: tabular-nums;
  margin-bottom: 2px;
}
.vt-review-meaning {
  font-size: 0.88rem;
  color: var(--color-text);
  line-height: 1.5;
  word-break: break-all;
}