/* ============================================
   IELTS Speaking Practice - Stylesheet
   Color scheme: Jade primary, Gold accent
   ============================================ */

/* CSS Custom Properties */
:root {
  /* Primary - Jade */
  --color-primary: #0E8A63;
  --color-primary-light: #11855F;
  --color-primary-lighter: #3AA37E;
  --color-primary-dark: #0B6E4F;
  --color-primary-bg: #E4F1EB;

  /* Accent - Gold */
  --color-accent: #B8860B;
  --color-accent-light: #D9A93B;
  --color-accent-dark: #9A6F08;
  --color-accent-bg: #F6EED5;

  /* Neutrals */
  --color-bg: #F6F4EF;
  --color-surface: #ffffff;
  --color-border: #ECE8DF;
  --color-text: #1C1B19;
  --color-text-secondary: #6B6862;
  --color-text-muted: #A8A39A;
  --color-danger: #e53e3e;
  --color-success: #0E8A63;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  /* Border radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.05), 0 2px 4px rgba(0,0,0,0.03);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.05), 0 4px 6px rgba(0,0,0,0.03);

  /* Layout */
  --nav-height: 60px;
  --max-width: 1200px;
}

/* Reset */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--color-primary-light); text-decoration: none; }
a:hover { color: var(--color-accent-dark); }

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* ============================================
   Navigation Bar
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--color-surface);
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  display: flex;
  align-items: center;
  padding: 0 var(--space-lg);
  box-shadow: none;
}

.navbar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  white-space: nowrap;
}

.navbar-logo .logo-icon {
  width: 32px;
  height: 32px;
  background: var(--color-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: bold;
  color: #fff;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.navbar-nav a {
  color: rgba(28,27,25,0.65);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s;
  white-space: nowrap;
}

.navbar-nav a:hover,
.navbar-nav a.active {
  color: var(--color-text);
  background: rgba(28,27,25,0.08);
}

.navbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.navbar-right a {
  color: rgba(28,27,25,0.65);
  font-size: 14px;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}

.navbar-right a:hover {
  color: var(--color-text);
  background: rgba(28,27,25,0.08);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-xs);
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: 0.3s;
}

/* ============================================
   Main Container
   ============================================ */
.main-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: calc(var(--nav-height) + var(--space-lg)) var(--space-lg) var(--space-2xl);
  min-height: 100vh;
}

/* ============================================
   Home Page
   ============================================ */
.home-hero {
  background: transparent;
  color: var(--color-text);
  border-radius: 0;
  padding: var(--space-2xl) var(--space-xl);
  text-align: center;
  margin-bottom: var(--space-xl);
}

.home-hero h1 {
  font-size: 28px;
  margin-bottom: var(--space-sm);
}

.home-hero p {
  font-size: 15px;
  color: var(--color-text-secondary);
  opacity: 1;
  max-width: 600px;
  margin: 0 auto;
}

.home-section-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.home-entries {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.entry-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
  border: 2px solid var(--color-border);
  cursor: pointer;
  transition: all 0.25s;
  text-align: center;
}

.entry-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.entry-card .entry-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
  font-size: 24px;
  font-weight: bold;
}

.entry-card.part1 .entry-icon { background: var(--color-primary-bg); color: var(--color-primary); }
.entry-card.part2 .entry-icon { background: var(--color-accent-bg); color: var(--color-accent-dark); }
.entry-card.part3 .entry-icon { background: #f0fff4; color: var(--color-success); }

.entry-card h3 {
  font-size: 17px;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.entry-card p {
  font-size: 13px;
  color: var(--color-text-secondary);
}

/* ============================================
   Question Bank - Topic Cards
   ============================================ */
.bank-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.bank-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
}

.bank-controls {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.search-box {
  position: relative;
}

.search-box input {
  width: 220px;
  padding: var(--space-sm) var(--space-sm) var(--space-sm) 36px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  background: var(--color-surface);
  transition: border-color 0.2s;
}

.search-box input:focus {
  outline: none;
  border-color: var(--color-primary-light);
}

.search-box::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' stroke='%23a0aec0' stroke-width='2' viewBox='0 0 24 24'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cpath d='m21 21-4.35-4.35'/%3E%3C/svg%3E") no-repeat center;
  background-size: contain;
}

/* Season filter toggle */
.season-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 14px;
  color: var(--color-text-secondary);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}

.season-toggle input {
  appearance: none;
  width: 40px;
  height: 22px;
  background: var(--color-border);
  border-radius: 11px;
  position: relative;
  cursor: pointer;
  transition: background 0.2s;
}

.season-toggle input:checked {
  background: var(--color-accent);
}

.season-toggle input::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.2s;
}

.season-toggle input:checked::after {
  transform: translateX(18px);
}

/* Topic cards grid */
.topic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-md);
}

.topic-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
  overflow: hidden;
}

.topic-card:hover {
  border-color: var(--color-primary-lighter);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.topic-card .badge-new {
  position: absolute;
  top: 0;
  right: 0;
  background: var(--color-accent);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 0 var(--radius-md) 0 var(--radius-sm);
}

.topic-card .topic-category {
  font-size: 12px;
  color: var(--color-accent-dark);
  font-weight: 600;
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.topic-card .topic-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
  line-height: 1.4;
}

.topic-card .topic-meta {
  font-size: 13px;
  color: var(--color-text-muted);
}

.topic-card .season-tag {
  display: inline-block;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--color-primary-bg);
  color: var(--color-primary-light);
  margin-top: var(--space-xs);
}

.topic-card .season-tag.new {
  background: var(--color-accent-bg);
  color: var(--color-accent-dark);
}

/* Bank filter bar (题库页多维筛选器)
   注意：类名与「口语真题」页的 .filter-bar/.filter-group 区分开，避免样式互串 */
.bank-filter {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}
.bank-filter-group {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  flex-wrap: wrap;
}
.bank-filter-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary);
  min-width: 52px;
  flex-shrink: 0;
  line-height: 24px;
}
.bank-filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.bank-filter-chip {
  font-size: 13px;
  padding: 5px 12px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all 0.15s;
  user-select: none;
}
.bank-filter-chip:hover {
  border-color: var(--color-primary-lighter);
  color: var(--color-primary);
}
.bank-filter-chip.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  font-weight: 600;
}

/* Topic card: 类别 + 难度 + 频率 行 */
.topic-cat-row {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--space-xs);
}
.topic-card .topic-category {
  margin-bottom: 0;
}
.badge-diff {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 600;
  padding: 1px 8px;
  border-radius: 999px;
  background: #f1f3f5;
  color: var(--color-text-secondary);
}
.badge-diff::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
}
.badge-diff.diff-易 { color: #0E8A63; background: #E4F1EB; }
.badge-diff.diff-中 { color: #B7791F; background: #FDF2D9; }
.badge-diff.diff-难 { color: #D14343; background: #FCE8E8; }
.badge-freq {
  font-size: 11px;
  font-weight: 600;
  padding: 1px 8px;
  border-radius: 999px;
  background: #EDF2F7;
  color: #4A5568;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  color: var(--color-text-muted);
}

.empty-state .empty-icon {
  font-size: 48px;
  margin-bottom: var(--space-md);
}

/* ============================================
   Practice Page
   ============================================ */
.practice-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: start;
}

.practice-panel {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}

.practice-panel h2 {
  font-size: 18px;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-border);
}

/* Question display */
.question-display .question-part-label {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-md);
}

.question-display .question-topic {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-md);
  line-height: 1.4;
}

.question-display .question-list {
  list-style: none;
  margin-top: var(--space-md);
}

.question-display .question-list li {
  padding: var(--space-sm) 0 var(--space-sm) 28px;
  border-bottom: 1px solid var(--color-border);
  position: relative;
  font-size: 15px;
  line-height: 1.5;
  color: var(--color-text-secondary);
}

.question-display .question-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: var(--space-sm);
  width: 20px;
  height: 20px;
  background: var(--color-primary-bg);
  border-radius: 50%;
}

.question-display .question-list li::after {
  content: 'Q';
  position: absolute;
  left: 5px;
  top: var(--space-sm);
  font-size: 11px;
  font-weight: 700;
  color: var(--color-primary);
  text-align: center;
  width: 10px;
}

/* Part 2 cue card */
.cue-card {
  background: linear-gradient(135deg, #F6EED5 0%, #F6EED5 100%);
  border: 2px solid var(--color-accent-light);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin: var(--space-md) 0;
}

.cue-card .cue-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-accent-dark);
  margin-bottom: var(--space-sm);
}

.cue-card .cue-points {
  list-style: none;
}

.cue-card .cue-points li {
  padding: var(--space-xs) 0;
  padding-left: 20px;
  position: relative;
  font-size: 14px;
  color: var(--color-text-secondary);
}

.cue-card .cue-points li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: bold;
}

/* Countdown timer */
.countdown-box {
  text-align: center;
  margin: var(--space-lg) 0;
  padding: var(--space-lg);
  background: var(--color-primary-bg);
  border-radius: var(--radius-md);
}

.countdown-box .countdown-label {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xs);
}

.countdown-box .countdown-time {
  font-size: 48px;
  font-weight: 800;
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
  font-family: 'SF Mono', 'Fira Code', monospace;
}

.countdown-box .countdown-time.warning {
  color: var(--color-danger);
  animation: pulse-red 1s ease-in-out infinite;
}

@keyframes pulse-red {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.countdown-box .countdown-phase {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
}

.countdown-controls {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  margin-top: var(--space-md);
}

/* Recording section */
.record-section {
  text-align: center;
  padding: var(--space-lg) 0;
}

.record-button {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
  border: 4px solid #fff;
  box-shadow: 0 0 0 3px var(--color-primary);
}

.record-button:hover {
  transform: scale(1.05);
}

.record-button.recording {
  background: var(--color-danger);
  box-shadow: 0 0 0 3px var(--color-danger);
  animation: record-pulse 1.5s ease-in-out infinite;
}

@keyframes record-pulse {
  0%, 100% { box-shadow: 0 0 0 3px var(--color-danger), 0 0 0 0 rgba(229,62,62,0.3); }
  50% { box-shadow: 0 0 0 3px var(--color-danger), 0 0 0 20px rgba(229,62,62,0); }
}

.record-button .mic-icon {
  width: 32px;
  height: 32px;
  fill: #fff;
}

.record-button .stop-icon {
  width: 24px;
  height: 24px;
  background: #fff;
  border-radius: 4px;
}

.record-label {
  font-size: 14px;
  color: var(--color-text-secondary);
  font-weight: 500;
}

/* Waveform animation */
.waveform {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  height: 40px;
  margin: var(--space-sm) 0;
}

.waveform .bar {
  width: 4px;
  height: 8px;
  background: var(--color-primary-light);
  border-radius: 2px;
  animation: wave 0.8s ease-in-out infinite;
}

.waveform .bar:nth-child(1) { animation-delay: 0s; }
.waveform .bar:nth-child(2) { animation-delay: 0.1s; }
.waveform .bar:nth-child(3) { animation-delay: 0.2s; }
.waveform .bar:nth-child(4) { animation-delay: 0.15s; }
.waveform .bar:nth-child(5) { animation-delay: 0.05s; }
.waveform .bar:nth-child(6) { animation-delay: 0.25s; }
.waveform .bar:nth-child(7) { animation-delay: 0.1s; }
.waveform .bar:nth-child(8) { animation-delay: 0.2s; }
.waveform .bar:nth-child(9) { animation-delay: 0.15s; }
.waveform .bar:nth-child(10) { animation-delay: 0s; }

@keyframes wave {
  0%, 100% { height: 8px; }
  50% { height: 32px; }
}

/* Audio player */
.audio-player {
  margin-top: var(--space-md);
  padding: var(--space-md);
  background: var(--color-bg);
  border-radius: var(--radius-md);
}

.audio-player audio {
  width: 100%;
}

.audio-player .download-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 13px;
  color: var(--color-primary-light);
  margin-top: var(--space-sm);
  cursor: pointer;
}

.audio-player .download-link:hover {
  color: var(--color-accent-dark);
}

/* Transcript display */
.transcript-box {
  margin-top: var(--space-md);
  padding: var(--space-md);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  max-height: 200px;
  overflow-y: auto;
}

/* ============================================
   AI Feedback / Skeleton Loading
   ============================================ */
.skeleton-card {
  padding: var(--space-lg);
}

.skeleton-line {
  height: 14px;
  background: linear-gradient(90deg, var(--color-border) 25%, #EEEAE2 50%, var(--color-border) 75%);
  background-size: 200% 100%;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-sm);
  animation: shimmer 1.5s infinite;
}

.skeleton-line.short { width: 60%; }
.skeleton-line.medium { width: 80%; }
.skeleton-line.long { width: 100%; }

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* Feedback display */
.feedback-container {
  margin-top: var(--space-lg);
}

.feedback-header {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.feedback-header .overall-score {
  font-size: 56px;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.feedback-header .overall-score .score-max {
  font-size: 20px;
  color: var(--color-text-muted);
}

.feedback-header .overall-label {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
}

.score-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

/* 评分详细分析生成中的占位骨架 */
.score-grid-skeleton {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}
.score-grid-skeleton .skeleton-line {
  height: 64px;
  border-radius: var(--radius-md);
  margin: 0;
}

.score-item {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: var(--space-md);
}

.score-item .score-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-sm);
}

.score-item .score-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.score-item .score-value {
  font-size: 24px;
  font-weight: 800;
  color: var(--color-primary);
}

.score-bar {
  height: 6px;
  background: var(--color-border);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: var(--space-sm);
}

.score-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
  border-radius: 3px;
  transition: width 0.5s ease;
}

.score-item .score-comment {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.feedback-section {
  margin-bottom: var(--space-lg);
}

.feedback-section h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.feedback-section ul {
  list-style: none;
  padding-left: 0;
}

.feedback-section ul li {
  padding: var(--space-sm) 0;
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  border-bottom: 1px solid var(--color-border);
}

.feedback-section ul li:last-child {
  border-bottom: none;
}

.reference-answer {
  background: #f0fff4;
  border: 1px solid #c6f6d5;
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-top: var(--space-md);
}

.reference-answer h4 {
  color: var(--color-success);
}

.reference-answer .answer-text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  white-space: pre-wrap;
}

/* 结构化参考答案（按需生成 + Band 切换 + 播放音频） */
.ref-toolbar {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin: var(--space-md) 0;
}
.ref-band-toggle {
  display: inline-flex;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.ref-band-btn {
  border: none;
  background: transparent;
  padding: 6px 14px;
  font-size: 13px;
  cursor: pointer;
  color: var(--color-text-secondary);
}
.ref-band-btn.active {
  background: var(--color-primary);
  color: #fff;
}
.ref-band-label {
  font-size: 13px;
  color: var(--color-text-secondary);
  padding: 6px 10px;
}
.ref-answer-text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text);
  white-space: pre-wrap;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-md);
}
.ref-stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-sm);
  font-size: 12px;
  color: var(--color-text-muted);
}
.ref-vocab {
  margin-top: var(--space-sm);
  font-size: 13px;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px;
}
.ref-vocab-title, .ref-tips-title {
  color: var(--color-text-secondary);
  font-weight: 600;
}
.ref-vocab-chip {
  display: inline-flex;
  align-items: baseline;
  gap: 0.35em;
  background: #EAF3EE;
  color: var(--color-primary);
  border-radius: 999px;
  padding: 3px 11px;
  font-size: 12px;
  line-height: 1.45;
}
.ref-vocab-zh {
  font-size: 0.82em;
  color: var(--color-text-secondary);
  font-weight: 400;
  letter-spacing: 0.02em;
}
/* 范文正文内高分词汇就地加粗高亮（练习 + 模拟考试共用） */
.ref-kw {
  font-weight: 700;
  color: var(--color-primary);
  background: linear-gradient(transparent 62%, rgba(14, 138, 99, 0.16) 62%);
  border-radius: 2px;
  padding: 0 1px;
}
/* 模拟考试参考答案：回答思路 / 句子结构 */
.ref-approach {
  margin: var(--space-sm) 0;
  padding: 8px 12px;
  background: #F6EED5;
  border-left: 3px solid #B8860B;
  border-radius: 6px;
  font-size: 13px;
  color: #6b4e00;
}
.ref-approach-title { font-weight: 700; }
.ref-structures {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}
.ref-structures-title, .ref-vocab-title { color: var(--color-text-secondary); font-weight: 600; }
.ref-structure-chip {
  display: inline-block;
  background: #eafaf0;
  color: #1f7a44;
  border-radius: 6px;
  padding: 3px 10px;
  font-size: 12px;
  font-style: italic;
}
/* 跨题复用素材 */
.cross-block { margin-bottom: var(--space-md); }
.cross-title {
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 6px;
  color: var(--color-text-secondary);
}
.cross-block ul { margin: 0; padding-left: 18px; }
.cross-block ul li { margin-bottom: 4px; font-size: 13px; }
.cross-story {
  background: var(--color-surface-alt, #F6F4EF);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 10px 12px;
  margin-bottom: 8px;
  font-size: 13px;
  line-height: 1.6;
}
.ref-tips {
  margin-top: var(--space-sm);
  font-size: 13px;
  color: var(--color-text-secondary);
}
.ref-tips ul {
  margin: 4px 0 0;
  padding-left: 18px;
}

/* 桥接层：你 vs 这篇范文（纯前端比对 key_vocabulary ↔ transcript，零 AI 调用） */
.ref-bridge {
  margin-top: var(--space-md);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px;
  box-shadow: var(--shadow-sm);
}
.bridge-head {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 10px;
}
.bridge-head .t {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text);
}
.bridge-row {
  display: flex;
  gap: 10px;
  padding: 9px 0;
  border-top: 1px dashed var(--color-border);
}
.bridge-row:first-of-type {
  border-top: none;
  padding-top: 0;
}
.bridge-ico {
  flex: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 800;
  line-height: 1;
}
.bridge-row.have .bridge-ico { background: #EAF3EE; color: var(--color-primary); }
.bridge-row.next .bridge-ico { background: #F6EED5; color: #B8860B; }
.bridge-body { flex: 1; min-width: 0; }
.bridge-label {
  font-size: 12.5px;
  font-weight: 700;
  margin-bottom: 6px;
}
.bridge-row.have .bridge-label { color: var(--color-primary); }
.bridge-row.next .bridge-label { color: #8A6A08; }

.have-items { display: flex; flex-wrap: wrap; gap: 6px; }
.have-chip {
  font-size: 12px;
  background: #F6F5F1;
  color: var(--color-text-secondary);
  padding: 2px 9px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
}

.step {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  background: #FBF9F4;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin-bottom: 6px;
}
.step:last-child { margin-bottom: 0; }
.arrow { color: #B8860B; font-weight: 800; font-size: 13px; }
.was {
  font-size: 13px;
  color: var(--color-text-muted);
  text-decoration: line-through;
  text-decoration-color: #C0392B;
  text-decoration-thickness: 1.5px;
}
.now { font-size: 13px; color: #8A6A08; font-weight: 700; }
.step-note {
  font-size: 11.5px;
  color: var(--color-text-muted);
  margin-top: 3px;
  flex-basis: 100%;
  line-height: 1.55;
}

/* ============================================
   History Page
   ============================================ */
.history-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.history-item {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  transition: all 0.2s;
}

.history-item:hover {
  box-shadow: var(--shadow-md);
}

.history-item .history-score {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 800;
  flex-shrink: 0;
}

.history-item .history-score.high { background: #c6f6d5; color: #22543d; }
.history-item .history-score.mid { background: #F6EED5; color: #7c2d12; }
.history-item .history-score.low { background: #fed7d7; color: #742a2a; }

.history-item .history-info {
  flex: 1;
  min-width: 0;
}

.history-item .history-topic {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 2px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.history-item .history-meta {
  font-size: 13px;
  color: var(--color-text-muted);
}

.history-item .history-actions {
  display: flex;
  gap: var(--space-xs);
  flex-shrink: 0;
}

.history-item .icon-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--color-text-secondary);
  transition: all 0.2s;
  cursor: pointer;
}

.history-item .icon-btn:hover {
  background: var(--color-primary-bg);
  color: var(--color-primary);
}

.history-item .icon-btn.delete:hover {
  background: #fff5f5;
  color: var(--color-danger);
}

/* History page: split sections (daily practice / mock exam) */
.history-section {
  margin-top: var(--space-xl);
}

.history-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
}

.history-section-header h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin: 0;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.history-section-header h2::before {
  content: '';
  width: 4px;
  height: 18px;
  border-radius: 2px;
  background: var(--color-primary);
}

.history-empty-inline {
  background: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  text-align: center;
  color: var(--color-text-muted);
  font-size: 14px;
}

.history-tag {
  font-size: 12px;
  color: var(--color-text-muted);
  font-weight: 400;
}

/* ============================================
   Verification Code Page
   ============================================ */
.verify-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  padding: var(--space-lg);
}

.verify-card {
  background: #fff;
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  width: 100%;
  max-width: 400px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.15);
  text-align: center;
}

.verify-card .verify-icon {
  width: 64px;
  height: 64px;
  background: var(--color-primary-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-lg);
}

.verify-card h1 {
  font-size: 22px;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.verify-card .verify-subtitle {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
}

.verify-input-group {
  margin-bottom: var(--space-lg);
}

.verify-input {
  width: 100%;
  padding: var(--space-md);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 18px;
  text-align: center;
  letter-spacing: 3px;
  font-weight: 600;
  text-transform: uppercase;
  transition: border-color 0.2s;
}

.verify-input:focus {
  outline: none;
  border-color: var(--color-primary-light);
}

.verify-btn {
  width: 100%;
  padding: var(--space-md);
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 600;
  transition: all 0.2s;
}

.verify-btn:hover {
  background: var(--color-primary-light);
}

.verify-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.verify-hint {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.verify-error {
  color: var(--color-danger);
  font-size: 14px;
  margin-top: var(--space-sm);
  min-height: 20px;
}

/* ============================================
   Admin Page
   ============================================ */
.admin-page {
  max-width: 900px;
  margin: 0 auto;
  padding: calc(var(--nav-height) + var(--space-lg)) var(--space-lg) var(--space-2xl);
}

.admin-login-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  max-width: 400px;
  margin: var(--space-2xl) auto;
  box-shadow: var(--shadow-lg);
  text-align: center;
}

.admin-login-card h2 {
  color: var(--color-primary);
  margin-bottom: var(--space-lg);
}

.admin-dashboard h2 {
  color: var(--color-primary);
  margin-bottom: var(--space-lg);
}

.admin-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.admin-stat-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}

.admin-stat-card .stat-val {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-primary);
}

.admin-stat-card.warning .stat-val {
  color: var(--color-accent-dark);
}

.admin-stat-card .stat-lbl {
  font-size: 13px;
  color: var(--color-text-secondary);
}

.admin-section {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--space-lg);
}

.admin-section h3 {
  font-size: 16px;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.admin-code-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.admin-code-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  font-size: 14px;
}

.admin-code-item .code-text {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-weight: 700;
  font-size: 15px;
  color: var(--color-text);
  letter-spacing: 1px;
}

.admin-code-item .code-info {
  flex: 1;
  font-size: 12px;
  color: var(--color-text-muted);
}

.status-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 4px;
}

.status-badge.active { background: #c6f6d5; color: #22543d; }
.status-badge.expired { background: #fed7d7; color: #742a2a; }
.status-badge.revoked { background: #ECE8DF; color: #6B6862; }

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  transition: all 0.2s;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-light);
}

.btn-accent {
  background: var(--color-accent);
  color: #fff;
}

.btn-accent:hover {
  background: var(--color-accent-dark);
}

.btn-outline {
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  background: var(--color-surface);
}

.btn-outline:hover {
  border-color: var(--color-primary-light);
  color: var(--color-primary);
}

.btn-sm {
  padding: var(--space-xs) var(--space-md);
  font-size: 13px;
}

.btn-block {
  width: 100%;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ============================================
   Speaking Topics - Multi-Tag Filter System
   ============================================ */
.topics-page-header {
  margin-bottom: var(--space-lg);
}

.topics-page-header h1 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.topics-page-header .topics-page-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
}

/* Filter bar container */
.filter-bar {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--space-lg);
  overflow: hidden;
}

.filter-bar-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  cursor: pointer;
  user-select: none;
  border-bottom: 1px solid var(--color-border);
  transition: background 0.2s;
}

.filter-bar-header:hover {
  background: var(--color-bg);
}

.filter-bar-title {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary);
  flex: 1;
}

.filter-bar-count {
  font-size: 12px;
  color: var(--color-accent-dark);
  background: var(--color-accent-bg);
  padding: 2px 10px;
  border-radius: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.filter-bar-count:empty {
  display: none;
}

.filter-toggle-icon {
  display: none;
  transition: transform 0.3s;
  color: var(--color-text-muted);
}

.filter-toggle-icon.rotated {
  transform: rotate(180deg);
}

.filter-bar-body {
  padding: var(--space-md) var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  transition: max-height 0.3s ease, opacity 0.3s ease, padding 0.3s ease;
  max-height: 800px;
  overflow: hidden;
}

.filter-bar-body.collapsed {
  max-height: 0;
  opacity: 0;
  padding-top: 0;
  padding-bottom: 0;
}

/* Top row: search + reset */
.filter-top-row {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.filter-search {
  flex: 1;
  min-width: 200px;
}

.filter-search input {
  width: 100%;
}

/* Filter group — 分组色块 + 左侧强调条（每维度一个色调） */
.filter-group {
  --fg-accent: var(--color-primary);
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 13px 16px 15px;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--fg-accent);
}

.filter-group[data-dim="parts"]       { --fg-accent: #0E8A63; }  /* 玉绿 · 考试模块 */
.filter-group[data-dim="categories"]  { --fg-accent: #2F7D8C; }  /* 鸭青 · 话题大类 */
.filter-group[data-dim="seasons"]     { --fg-accent: #B8860B; }  /* 黛金 · 考季属性 */
.filter-group[data-dim="frequencies"] { --fg-accent: #A2603C; }  /* 赭石 · 考频等级 */
.filter-group[data-dim="difficulties"] { --fg-accent: #6E5A8A; } /* 黛紫 · 难度等级 */

.filter-group-label {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text);
  text-transform: none;
  letter-spacing: 0.01em;
}

.filter-group-label::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--fg-accent);
  flex-shrink: 0;
}

/* Tag buttons */
.tag-row {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.tag-row-wrap {
  flex-wrap: wrap;
}

.tag-btn {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border-radius: 20px;
  border: 1.5px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.tag-btn:hover {
  border-color: var(--color-primary-lighter);
  color: var(--color-primary);
}

.tag-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* 分组内标签的交互态跟随该维度的强调色 */
.filter-group .tag-btn:hover {
  border-color: var(--fg-accent);
  color: var(--fg-accent);
}

.filter-group .tag-btn.active,
.filter-group .tag-btn.active:hover {
  background: var(--fg-accent);
  border-color: var(--fg-accent);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
}

/* Result count bar */
.topics-result-bar {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
  font-weight: 500;
}

.topics-result-bar span {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

/* Topic card extra tags */
.topic-card-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: var(--space-xs);
}

.tag-pill {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 4px;
}

.tag-pill.tag-part {
  background: var(--color-primary-bg);
  color: var(--color-primary);
}

.tag-pill.freq-high {
  background: #F6EED5;
  color: var(--color-accent-dark);
}

.tag-pill.freq-medium {
  background: var(--color-primary-bg);
  color: var(--color-primary-light);
}

.tag-pill.freq-low {
  background: #ECE8DF;
  color: var(--color-text-muted);
}

/* 难度标签：白底 + 语义色点，避免与考频的实心底混淆 */
.tag-pill.tag-diff {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.tag-pill.tag-diff::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--diff-color, var(--color-text-muted));
  flex-shrink: 0;
}

.tag-pill.diff-易 { --diff-color: #0E8A63; }  /* 入门易答 */
.tag-pill.diff-中 { --diff-color: #B7791F; }  /* 中等难度 */
.tag-pill.diff-难 { --diff-color: #D14343; }  /* 高难挑战 */

/* Home page topics entry card */
.entry-card.topics-entry .entry-icon {
  background: linear-gradient(135deg, var(--color-accent-bg) 0%, #F6EED5 100%);
  color: var(--color-accent-dark);
}

/* Home page mock exam entry card */
.entry-card.mock-exam-entry {
  border-color: rgba(184, 134, 11, 0.4);
}
.entry-card.mock-exam-entry:hover {
  border-color: var(--color-accent-dark, #B8860B);
}
.entry-card.mock-exam-entry .entry-icon {
  background: linear-gradient(135deg, #F6EED5 0%, #F6EED5 100%);
  color: #9A6F08;
}

/* Home page random practice entry card */
.entry-card.random-entry .entry-icon {
  background: linear-gradient(135deg, #EEF4F1 0%, #E9F1EC 100%);
  color: var(--color-primary);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
  :root {
    --nav-height: 54px;
  }

  .navbar {
    padding: 0 var(--space-md);
  }

  .navbar-nav {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: var(--space-md);
    gap: 0;
    box-shadow: var(--shadow-lg);
  }

  .navbar-nav.open {
    display: flex;
  }

  .navbar-nav a {
    width: 100%;
    padding: var(--space-md);
    border-radius: 0;
  }

  .navbar-right {
    gap: 0;
  }

  .navbar-right a {
    font-size: 13px;
    padding: var(--space-xs) var(--space-xs);
  }

  .nav-toggle {
    display: flex;
  }

  .navbar-logo {
    font-size: 15px;
  }

  .navbar-logo .logo-icon {
    width: 28px;
    height: 28px;
    font-size: 16px;
  }

  .main-container {
    padding: calc(var(--nav-height) + var(--space-md)) var(--space-md) var(--space-xl);
  }

  /* Mobile: show filter toggle icon and enable collapse */
  .filter-toggle-icon {
    display: flex;
  }

  /* Mobile: filter bar body collapsed by default via JS */
  .filter-bar-header {
    padding: var(--space-md);
  }

  .filter-bar-body {
    padding: 0 var(--space-md);
  }

  .filter-bar-body.collapsed {
    max-height: 0;
    padding: 0 var(--space-md);
  }

  /* Mobile: tag buttons smaller */
  .tag-btn {
    padding: 5px 12px;
    font-size: 12px;
  }

  /* Mobile: filter top row stacks */
  .filter-top-row {
    flex-direction: column;
    align-items: stretch;
  }

  .filter-top-row .btn {
    width: 100%;
  }

  /* Practice: stack vertically on mobile */
  .practice-layout {
    grid-template-columns: 1fr;
  }

  .home-hero {
    padding: var(--space-xl) var(--space-md);
  }

  .home-hero h1 {
    font-size: 22px;
  }

  .home-hero p {
    font-size: 13px;
  }

  /* Topic grid: single column on small screens */
  .topic-grid {
    grid-template-columns: 1fr;
  }

  /* Search box full width */
  .bank-header {
    flex-direction: column;
    align-items: stretch;
  }

  .bank-controls {
    flex-direction: column;
    align-items: stretch;
  }

  .search-box input {
    width: 100%;
  }

  /* Score grid: single column */
  .score-grid {
    grid-template-columns: 1fr;
  }

  /* Recording button larger on mobile */
  .record-button {
    width: 72px;
    height: 72px;
  }

  .countdown-box .countdown-time {
    font-size: 40px;
  }

  /* History items stack */
  .history-item {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .history-item .history-info {
    order: 1;
    flex: 1 1 100%;
  }

  .history-item .history-score {
    order: 0;
  }

  .history-item .history-actions {
    order: 2;
    width: 100%;
    justify-content: flex-end;
  }

  /* Admin */
  .admin-stats {
    grid-template-columns: 1fr;
  }

  .admin-code-item {
    flex-wrap: wrap;
  }
}

@media (max-width: 480px) {
  .practice-panel {
    padding: var(--space-md);
  }
}

/* ============================================
   Utility classes
   ============================================ */
.hidden { display: none !important; }
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.text-sm { font-size: 13px; }
.mb-2 { margin-bottom: var(--space-sm); }
.mb-4 { margin-bottom: var(--space-lg); }
.mt-4 { margin-top: var(--space-lg); }
.flex { display: flex; }
.items-center { align-items: center; }
.gap-2 { gap: var(--space-sm); }

/* ============================================
   Mock Exam - Prep Page
   ============================================ */
.me-prep-container {
  max-width: 700px;
  margin: 0 auto;
}

.me-prep-hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: var(--space-2xl) var(--space-xl);
  text-align: center;
  margin-bottom: var(--space-xl);
}

.me-prep-icon {
  width: 72px;
  height: 72px;
  background: rgba(255,255,255,0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-lg);
  color: #fff;
}

.me-prep-hero h1 {
  font-size: 24px;
  margin-bottom: var(--space-xs);
}

.me-prep-hero p {
  font-size: 14px;
  opacity: 0.85;
}

.me-prep-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.me-prep-section {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}

.me-prep-section h2 {
  font-size: 16px;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-border);
}

.me-prep-rules {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.me-rule {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.me-rule-num {
  width: 24px;
  height: 24px;
  background: var(--color-primary-bg);
  color: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
}

.me-rule-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
  color: var(--color-text-muted);
}

.me-rule.warn .me-rule-icon {
  color: var(--color-danger);
  background: #fff5f5;
  border-radius: 50%;
}

.me-mic-test {
  text-align: center;
}

.me-daily-limit {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-bg);
  border-radius: var(--radius-sm);
}

.me-limit-reached {
  color: var(--color-danger);
  font-weight: 600;
}

.me-start-btn {
  font-size: 16px;
  padding: var(--space-md) var(--space-lg);
}

/* ============================================
   Mock Exam - Resume Page
   ============================================ */
.me-resume-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
}

.me-resume-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  max-width: 460px;
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.me-resume-icon {
  width: 64px;
  height: 64px;
  background: var(--color-primary-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-lg);
  color: var(--color-primary);
}

.me-resume-card h2 {
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.me-resume-info {
  text-align: left;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin: var(--space-lg) 0;
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 2;
}

.me-resume-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
}

/* ============================================
   Mock Exam - Exam Shell
   ============================================ */
.me-exam-shell {
  min-height: 100vh;
  background: var(--color-bg);
  padding-top: var(--nav-height);
}

.me-exam-topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--color-primary);
  z-index: 1000;
  box-shadow: var(--shadow-md);
}

.me-topbar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: 0 var(--space-lg);
}

.me-topbar-phase {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
}

.me-topbar-progress {
  flex: 1;
}

.me-progress-bar {
  height: 6px;
  background: rgba(255,255,255,0.2);
  border-radius: 3px;
  overflow: hidden;
}

.me-progress-fill {
  height: 100%;
  background: var(--color-accent);
  border-radius: 3px;
  transition: width 0.4s ease;
}

.me-pause-btn {
  background: rgba(255,255,255,0.12) !important;
  color: #fff !important;
  border-color: rgba(255,255,255,0.2) !important;
}

.me-pause-btn:hover {
  background: rgba(255,255,255,0.2) !important;
}

.me-exam-content {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg) var(--space-2xl);
}

/* ============================================
   Mock Exam - Phase Containers
   ============================================ */
.me-phase-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.me-topic-tag {
  display: inline-block;
  background: var(--color-primary-bg);
  color: var(--color-primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 4px;
  align-self: flex-start;
}

.me-question-area {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}

.me-examiner-label {
  font-size: 12px;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--space-sm);
}

.me-question-text {
  font-size: 18px;
  line-height: 1.6;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.me-play-btn {
  display: inline-flex !important;
  align-items: center;
  gap: 6px;
}

.me-question-hint {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: var(--space-sm);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--color-border);
}

.me-record-section {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}

.me-record-section .record-button {
  width: 72px;
  height: 72px;
}

.me-record-section .record-button .mic-icon {
  width: 28px;
  height: 28px;
}

.me-record-hint {
  font-size: 12px;
  color: var(--color-text-muted);
  text-align: center;
}

.me-action-area {
  display: flex;
  justify-content: center;
  padding: var(--space-sm) 0;
}

.me-next-btn {
  font-size: 16px;
  padding: var(--space-md) var(--space-2xl);
}

/* ============================================
   Mock Exam - Part 2 Cue Card
   ============================================ */
.me-cue-card-full {
  background: linear-gradient(135deg, #F6EED5 0%, #F6EED5 100%);
  border: 2px solid var(--color-accent-light);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.me-cue-header {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-accent-dark);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--space-sm);
}

.me-cue-title {
  font-size: 18px;
  line-height: 1.5;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.me-cue-points-label {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
}

.me-cue-points {
  list-style: none;
}

.me-cue-points li {
  padding: var(--space-xs) 0;
  padding-left: 20px;
  position: relative;
  font-size: 14px;
  color: var(--color-text-secondary);
}

.me-cue-points li::before {
  content: '\2022';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: bold;
}

.me-cue-footer {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: var(--space-sm);
}

.me-cue-card-mini {
  background: #F6EED5;
  border: 1px solid var(--color-accent-light);
  border-radius: var(--radius-md);
  padding: var(--space-md);
}

.me-cue-card-mini .me-cue-title {
  font-size: 15px;
  margin-bottom: var(--space-sm);
}

.me-cue-card-mini .me-cue-points li {
  font-size: 12px;
}

/* ============================================
   Mock Exam - Countdown Timer
   ============================================ */
.me-countdown-box {
  text-align: center;
  padding: var(--space-lg);
  background: var(--color-primary-bg);
  border-radius: var(--radius-md);
}

.me-countdown-label {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xs);
}

.me-countdown-time {
  font-size: 48px;
  font-weight: 800;
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
  font-family: 'SF Mono', 'Fira Code', monospace;
}

.me-countdown-time.warning {
  color: var(--color-danger);
  animation: pulse-red 1s ease-in-out infinite;
}

.me-countdown-phase {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
}

/* ============================================
   Mock Exam - Loading Examiner
   ============================================ */
.me-loading-examiner {
  text-align: center;
  padding: var(--space-2xl);
}

.me-loading-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: var(--space-md);
}

.me-loading-dots span {
  width: 12px;
  height: 12px;
  background: var(--color-primary);
  border-radius: 50%;
  animation: me-bounce 1.4s infinite ease-in-out both;
}

.me-loading-dots span:nth-child(1) { animation-delay: -0.32s; }
.me-loading-dots span:nth-child(2) { animation-delay: -0.16s; }

@keyframes me-bounce {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.5; }
  40% { transform: scale(1); opacity: 1; }
}

.me-loading-examiner p {
  font-size: 14px;
  color: var(--color-text-secondary);
}

/* ============================================
   Mock Exam - Examiner lead-in / notes
   ============================================ */

/* 考官的引入语（换话题、进入 Part 3）：比题目弱一档，表明这是过渡话 */
.me-examiner-leadin {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-muted);
  font-style: italic;
  border-left: 3px solid var(--color-primary);
  padding: 2px 0 2px 10px;
  margin-bottom: var(--space-sm);
}

/* Part 2 准备阶段的笔记（对应真实考试的纸笔） */
.me-notes-box {
  margin-top: var(--space-md);
  text-align: left;
}

.me-notes-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 6px;
  letter-spacing: 0.02em;
}

.me-notes-input {
  width: 100%;
  min-height: 96px;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 14px;
  line-height: 1.6;
  resize: vertical;
  font-family: inherit;
}

.me-notes-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

/* 作答阶段回看自己的提纲 */
.me-notes-view {
  margin-top: var(--space-sm);
  padding: 10px 12px;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  text-align: left;
}

.me-notes-body {
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

/* ============================================
   Mock Exam - Ended Phase
   ============================================ */
.me-phase-container.me-ended {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
}

.me-ended-icon {
  width: 72px;
  height: 72px;
  background: #c6f6d5;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-lg);
  color: var(--color-success);
}

.me-ended-text {
  font-size: 18px;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.me-ended-status {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
}

.me-report-progress {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.me-progress-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.me-report-progress p {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* ============================================
   Mock Exam - Report Page
   ============================================ */
.me-report-hero {
  display: flex;
  gap: var(--space-xl);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  margin-bottom: var(--space-lg);
}

.me-report-score-badge {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.me-report-score-badge.high { background: #c6f6d5; color: #22543d; }
.me-report-score-badge.mid { background: #F6EED5; color: #7c2d12; }
.me-report-score-badge.low { background: #fed7d7; color: #742a2a; }

.me-report-score-num {
  font-size: 36px;
  font-weight: 800;
  line-height: 1;
}

.me-report-score-max {
  font-size: 12px;
  opacity: 0.7;
}

.me-report-hero-info {
  flex: 1;
}

.me-report-hero-info h1 {
  font-size: 22px;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.me-report-meta {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.me-report-comment {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-sm);
}

.me-band-desc {
  font-size: 12px;
  color: var(--color-text-muted);
  background: var(--color-bg);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  line-height: 1.5;
}

.me-report-section {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  margin-bottom: var(--space-md);
  overflow: hidden;
}

.me-report-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg) var(--space-xl);
  cursor: pointer;
  user-select: none;
  border-bottom: 1px solid var(--color-border);
  transition: background 0.2s;
}

.me-report-section-header:hover {
  background: var(--color-bg);
}

.me-report-section-header h2 {
  font-size: 16px;
  color: var(--color-primary);
}

.me-collapse-icon {
  display: flex;
  align-items: center;
  color: var(--color-text-muted);
  transform: rotate(-90deg);
  transition: transform 0.2s;
}

.me-collapse-icon svg {
  transform: rotate(90deg);
}

.me-report-section-body {
  padding: var(--space-lg) var(--space-xl);
}

/* Playback items */
.me-playback-item {
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-md) 0;
}

.me-playback-item:last-child {
  border-bottom: none;
}

.me-playback-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.me-playback-part {
  font-size: 11px;
  font-weight: 700;
  color: #fff;
  background: var(--color-primary);
  padding: 2px 8px;
  border-radius: 4px;
  white-space: nowrap;
}

.me-playback-q {
  font-size: 14px;
  color: var(--color-text);
  font-weight: 500;
}

.me-playback-points {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: var(--space-sm);
}

.me-point-pill {
  font-size: 11px;
  background: var(--color-accent-bg);
  color: var(--color-accent-dark);
  padding: 2px 8px;
  border-radius: 4px;
}

.me-playback-audio {
  margin-bottom: var(--space-sm);
}

.me-playback-audio audio {
  width: 100%;
}

.me-no-audio {
  font-size: 12px;
  color: var(--color-text-muted);
  font-style: italic;
  margin-bottom: var(--space-sm);
}

.me-playback-transcript {
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  padding: var(--space-md);
  margin-bottom: var(--space-sm);
}

.me-playback-transcript strong {
  font-size: 13px;
  color: var(--color-text-secondary);
}

.me-playback-transcript p {
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.6;
  margin-top: var(--space-xs);
}

.me-playback-errors,
.me-playback-fluency {
  font-size: 13px;
  margin-bottom: var(--space-sm);
}

.me-playback-errors strong,
.me-playback-fluency strong {
  color: var(--color-danger);
}

.me-playback-fluency strong {
  color: var(--color-accent-dark);
}

.me-playback-errors ul,
.me-playback-fluency ul {
  list-style: none;
  padding-left: 0;
  margin-top: var(--space-xs);
}

.me-playback-errors li,
.me-playback-fluency li {
  padding: var(--space-xs) 0;
  padding-left: 16px;
  position: relative;
  color: var(--color-text-secondary);
}

.me-playback-errors li::before {
  content: '\2717';
  position: absolute;
  left: 0;
  color: var(--color-danger);
  font-weight: bold;
}

.me-playback-fluency li::before {
  content: '~';
  position: absolute;
  left: 0;
  color: var(--color-accent-dark);
  font-weight: bold;
}

/* 逐题「高分参考答案」：从底部 Reference Answers 移到对应题目下方，
   与练习模式共用 ref-toolbar / ref-answer-text / ref-bridge 等样式 */
.me-pb-ref {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px dashed var(--color-border);
}

.me-pb-ref-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.me-pb-ref .ref-answer-text {
  margin-top: var(--space-sm);
}

/* 逐题发音词块：与语法/流利度问题区分开，单独成块 */
.me-playback-item > .pron-words-inline {
  margin-top: var(--space-sm);
}

/* Improvement list */
.me-improvement-list {
  list-style: none;
  padding-left: 0;
}

.me-improvement-list li {
  padding: var(--space-sm) 0;
  padding-left: 28px;
  position: relative;
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  border-bottom: 1px solid var(--color-border);
}

.me-improvement-list li:last-child {
  border-bottom: none;
}

.me-improvement-list li::before {
  content: '\2192';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: bold;
}

/* Reference answers */
.me-ref-answer {
  background: #f0fff4;
  border: 1px solid #c6f6d5;
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin-bottom: var(--space-md);
}

.me-ref-answer:last-child {
  margin-bottom: 0;
}

.me-ref-part {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-success);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--space-xs);
}

.me-ref-question {
  font-size: 14px;
  color: var(--color-text);
  font-weight: 500;
  margin-bottom: var(--space-sm);
}

.me-ref-text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-secondary);
  white-space: pre-wrap;
}

/* History - mock exam item */
.history-item.mock-exam-item {
  border-left: 4px solid var(--color-accent);
}

/* ============================================
   Mock Exam - Responsive
   ============================================ */
@media (max-width: 768px) {
  .me-prep-hero {
    padding: var(--space-xl) var(--space-md);
  }

  .me-prep-hero h1 {
    font-size: 20px;
  }

  .me-report-hero {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }

  .me-report-score-badge {
    margin: 0 auto;
  }

  .me-topbar-phase {
    font-size: 13px;
  }

  .me-exam-content {
    padding: var(--space-md);
  }

  .me-question-text {
    font-size: 16px;
  }

  .me-countdown-time {
    font-size: 36px;
  }

  .me-report-section-header {
    padding: var(--space-md);
  }

  .me-report-section-body {
    padding: var(--space-md);
  }

  .me-resume-actions {
    flex-direction: column;
  }
}

/* ============================================
   Part 1 Sequential Question Mode
   ============================================ */

/* Progress bar */
.p1-progress-bar-wrapper {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  margin-bottom: var(--space-lg);
  box-shadow: var(--shadow-sm);
}
.p1-progress-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-sm);
}
.p1-progress-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
}
.p1-progress-count {
  font-size: 13px;
  color: var(--color-text-secondary);
  font-weight: 600;
}
.p1-progress-bar {
  height: 8px;
  background: var(--color-border);
  border-radius: 4px;
  overflow: hidden;
}
.p1-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-radius: 4px;
  transition: width 0.4s ease;
}

/* Sequential layout */
.p1-seq-layout {
  align-items: flex-start;
}

/* Question panel */
.p1-question-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.p1-question-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-xs);
}
.p1-question-number {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}
.p1-question-text {
  font-size: 20px;
  line-height: 1.6;
  color: var(--color-text);
  font-weight: 500;
  padding: var(--space-md) 0;
  min-height: 60px;
}
.p1-replay-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  align-self: flex-start;
  cursor: pointer;
}
.p1-replay-btn svg {
  flex-shrink: 0;
}

/* Answer submitted state */
.p1-answer-submitted {
  text-align: center;
  padding: var(--space-lg) 0;
  border-top: 2px solid var(--color-border);
  margin-top: var(--space-lg);
}
.p1-submitted-icon {
  width: 48px;
  height: 48px;
  background: var(--color-success-bg, #f0fff4);
  color: var(--color-success);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: bold;
  margin: 0 auto var(--space-sm);
}
.p1-submitted-text {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}
.p1-next-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  font-size: 16px;
  padding: 12px 32px;
}

/* Part 1 sequential responsive */
@media (max-width: 768px) {
  .p1-question-text {
    font-size: 17px;
  }
  .p1-question-number {
    font-size: 22px;
  }
}

/* ============================================
   发音评测（讯飞 ISE）结果展示
   ============================================ */
.pron-area { margin-top: var(--space-md); }
.pron-hint { font-size: 12px; color: var(--color-text-muted); margin-left: var(--space-sm); }
#pron-result { margin-top: var(--space-sm); }
.pron-score {
  display: flex; align-items: center; gap: var(--space-md);
  padding: var(--space-md); background: var(--color-bg);
  border-radius: var(--radius-md); border: 1px solid var(--color-border);
}
.pron-score-num { font-size: 32px; font-weight: 800; color: var(--color-primary); line-height: 1; }
.pron-score-num span { font-size: 16px; color: var(--color-text-muted); font-weight: 600; }
.pron-score-label { font-size: 13px; color: var(--color-text-secondary); }
.pron-raw { font-size: 12px; color: var(--color-text-muted); }
.pron-words { margin-top: var(--space-md); }
.pron-words-title { font-size: 14px; font-weight: 700; margin-bottom: var(--space-xs); color: var(--color-text); }
.pron-word {
  display: flex; align-items: center; gap: var(--space-sm);
  padding: 8px 10px; border-radius: 8px; background: #fff5f5;
  margin-bottom: 6px; flex-wrap: wrap;
}
.pw-text { font-weight: 700; color: #742a2a; font-size: 15px; }
.pw-score {
  font-size: 12px; font-weight: 700; background: #fed7d7; color: #742a2a;
  border-radius: 10px; padding: 1px 8px; min-width: 28px; text-align: center;
}
.pw-err { font-size: 12px; color: #9b2c2c; flex: 1; min-width: 160px; }

/* 识别结果中发音需留意词的标红 */
.pron-red { color: #d93838; font-weight: 700; }
.pron-red:hover { text-decoration: underline dotted; cursor: help; }

/* 改进建议模块：需要留意的词（内联） */
.pron-words-inline { margin-top: var(--space-sm); }
.pron-words-inline .pron-words-title {
  font-size: 13px; font-weight: 700; color: var(--color-danger, #d93838);
  margin-bottom: 6px;
}
.pron-words-list { display: flex; flex-wrap: wrap; gap: 8px; }
.pron-word-chip {
  display: inline-flex; align-items: baseline; gap: 6px;
  padding: 4px 10px; border-radius: 999px;
  background: #fff1f0; border: 1px solid #ffccc7;
}
.pron-word-chip .pw-text { font-weight: 700; color: #ad2f2f; font-size: 14px; }
.pron-word-chip .pw-score {
  font-size: 11px; font-weight: 700; color: #ad2f2f;
  background: #ffccc7; border-radius: 10px; padding: 0 6px;
}

/* 需留意的词：整词标红 + 标准音标整段标红（紧凑小卡）
   与全站改版后的配色保持一致；只突出「需注意」的词，不做逐音素分析。 */
.pw {
  display: flex; flex-direction: column; align-items: center; gap: 3px;
  padding: 7px 12px; border: 1px solid #ffccc7; border-radius: 11px;
  background: #FCFBF9; min-width: 60px;
}
.pw-word { font-size: 17px; line-height: 1.1; display: inline-flex; }
.pw-word-bad { color: var(--color-danger); font-weight: 700; }
.pw-ipa {
  font-size: 13px; line-height: 1.1; display: inline-flex; align-items: center;
  gap: 1px; color: var(--color-text-secondary);
}
.pw-ipa-bad { color: var(--color-danger); font-weight: 600; }
.pron-words-title .pron-count {
  font-size: 11px; font-weight: 600; color: var(--color-text-muted);
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: 999px; padding: 0 8px; margin-left: 4px;
}
/* 需留意词占回答比例（为后续用户数据看板留存指标） */
.pron-words-title .pron-rate {
  font-size: 11px; font-weight: 600; color: var(--color-text-muted);
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: 999px; padding: 0 8px; margin-left: 6px;
}
.pron-ok { font-size: 13px; color: var(--color-success); margin-top: 4px; }

/* 模考报告：发音概览（正确率指标 + 需留意词，与普通练习口径一致） */
.pron-accuracy-row {
  display: flex; align-items: center; gap: var(--space-md);
  padding: 10px 14px; margin-bottom: var(--space-sm);
  background: var(--color-surface); border: 1px solid var(--color-border); border-radius: 12px;
}
.pron-accuracy-metric { display: flex; flex-direction: column; align-items: center; line-height: 1; }
.pron-accuracy-num { font-size: 26px; font-weight: 800; color: var(--color-primary, #0E8A63); }
.pron-accuracy-label { font-size: 12px; color: var(--color-text-muted); margin-top: 2px; }
.pron-accuracy-sub { font-size: 13px; color: var(--color-text-secondary); }