/* 云侣音乐 - 高雅设计风格 */
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@300;400;500;600;700&family=Noto+Sans+SC:wght@300;400;500;600&display=swap');

:root {
  /* 主色调 */
  --bg-paper: #F5F2EB;
  --bg-card: #FFFEFA;
  --bg-card-hover: #F9F6F0;
  
  /* 文字色 */
  --text-ink: #2D2D2D;
  --text-ink-light: #6B6B6B;
  --text-muted: #9A9A9A;
  
  /* 强调色 */
  --accent-gold: #B8860B;
  --accent-gold-light: #D4A81E;
  --accent-gold-dark: #8B6508;
  --accent-burgundy: #722F37;
  --accent-teal: #2F4F4F;
  
  /* AI 相关 */
  --ai-purple: #8B5CF6;
  --ai-purple-light: #A78BFA;
  
  /* 边框和阴影 */
  --border-color: #D4CFC4;
  --border-light: #EAE6DE;
  --shadow-soft: 0 4px 20px rgba(45,45,45,.06);
  --shadow-medium: 0 8px 32px rgba(45,45,45,.1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-paper);
  color: var(--text-ink);
  min-height: 100vh;
  line-height: 1.7;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23B8860B' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.yunlv-page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px 100px;
}

/* Header */
.yunlv-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 48px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
}

.yunlv-logo-section {
  display: flex;
  align-items: center;
  gap: 16px;
}

.yunlv-logo-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-gold-dark) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: #fff;
  box-shadow: var(--shadow-soft);
}

.yunlv-logo-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.yunlv-logo {
  font-family: 'Noto Serif SC', serif;
  font-size: 32px;
  font-weight: 600;
  color: var(--text-ink);
  letter-spacing: 4px;
}

.yunlv-logo-sub {
  font-size: 10px;
  color: var(--text-ink-light);
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* Navigation */
.yunlv-nav-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 40px;
  background: var(--bg-card);
  padding: 6px;
  border-radius: 12px;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-soft);
  flex-wrap: wrap;
}

.yunlv-nav-tab {
  flex: 1;
  min-width: 120px;
  padding: 14px 20px;
  border: none;
  background: transparent;
  border-radius: 10px;
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-ink-light);
  cursor: pointer;
  transition: all .3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.yunlv-nav-tab:hover {
  color: var(--text-ink);
  background: #b8860b0d;
}

.yunlv-nav-tab.active {
  background: var(--accent-gold);
  color: #fff;
  box-shadow: 0 2px 12px #b8860b4d;
}

.yunlv-nav-tab.ai-tab {
  background: linear-gradient(135deg, var(--ai-purple) 0%, var(--ai-purple-light) 100%);
  color: #fff;
}

.yunlv-nav-tab.ai-tab:hover {
  background: linear-gradient(135deg, var(--ai-purple-light) 0%, var(--ai-purple) 100%);
}

.yunlv-payment-badge {
  display: inline-block;
  padding: 2px 8px;
  background: rgba(255,255,255,0.3);
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
  margin-left: 6px;
}

/* 完整版标识 */
.yunlv-plus-badge {
  display: inline-block;
  padding: 2px 6px;
  background: rgba(255,255,255,0.25);
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
  margin-left: 4px;
  color: #fff;
}

.yunlv-nav-tab:not(.active) .yunlv-plus-badge {
  background: var(--accent-gold);
  color: #fff;
}

.yunlv-nav-tab.active .yunlv-plus-badge {
  background: rgba(255,255,255,0.25);
}

/* Main Content */
.yunlv-main-content {
  display: none;
  animation: fadeIn .6s cubic-bezier(.4,0,.2,1);
}

.yunlv-main-content.active {
  display: block;
}

@keyframes fadeIn {
  0% { opacity: 0; transform: translateY(20px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* Section Header */
.yunlv-section-header {
  text-align: center;
  margin-bottom: 40px;
}

.yunlv-section-title {
  font-family: 'Noto Serif SC', serif;
  font-size: 32px;
  font-weight: 600;
  color: var(--text-ink);
  margin-bottom: 12px;
}

.yunlv-section-subtitle {
  font-size: 15px;
  color: var(--text-ink-light);
}

/* Filter Section */
.yunlv-filter-section {
  margin-bottom: 32px;
}

.yunlv-filter-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.yunlv-filter-tag {
  padding: 8px 16px;
  border-radius: 20px;
  border: 1px solid var(--border-light);
  background: var(--bg-card);
  font-size: 13px;
  color: var(--text-ink-light);
  cursor: pointer;
  transition: all .25s ease;
}

.yunlv-filter-tag:hover {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}

.yunlv-filter-tag.active {
  background: var(--accent-gold);
  color: #fff;
  border-color: var(--accent-gold);
}

/* Music Grid */
.yunlv-music-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

.yunlv-music-card {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 24px;
  border: 1px solid var(--border-light);
  transition: all .3s ease;
  cursor: pointer;
  box-shadow: var(--shadow-soft);
}

.yunlv-music-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-medium);
  border-color: var(--border-color);
}

.yunlv-music-header {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 16px;
}

.yunlv-music-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-gold-dark) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: #fff;
  flex-shrink: 0;
}

.yunlv-music-info {
  flex: 1;
  min-width: 0;
}

.yunlv-music-title {
  font-family: 'Noto Serif SC', serif;
  font-size: 17px;
  font-weight: 600;
  color: var(--text-ink);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.yunlv-music-composer {
  font-size: 13px;
  color: var(--accent-burgundy);
  font-weight: 500;
}

.yunlv-music-era {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

.yunlv-music-description {
  font-size: 13px;
  color: var(--text-ink-light);
  line-height: 1.7;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.yunlv-music-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.yunlv-play-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-ink);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: all .3s ease;
}

.yunlv-play-btn:hover {
  transform: scale(1.08);
  border-color: var(--accent-gold);
  background: var(--accent-gold);
  color: #fff;
}

.yunlv-progress-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.yunlv-progress-bar {
  flex: 1;
  height: 4px;
  background: var(--border-light);
  border-radius: 2px;
  overflow: hidden;
  cursor: pointer;
}

.yunlv-progress-fill {
  height: 100%;
  background: var(--accent-gold);
  width: 0%;
  transition: width .1s linear;
  border-radius: 2px;
}

.yunlv-time-display {
  font-size: 11px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

/* AI Explain Grid */
.yunlv-explain-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 20px;
}

.yunlv-explain-card {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 28px;
  border: 1px solid var(--border-light);
  transition: all .3s ease;
  cursor: pointer;
  box-shadow: var(--shadow-soft);
}

.yunlv-explain-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-medium);
  border-color: var(--accent-gold);
}

.yunlv-explain-title {
  font-family: 'Noto Serif SC', serif;
  font-size: 18px;
  font-weight: 600;
  color: var(--text-ink);
  margin-bottom: 8px;
}

.yunlv-explain-composer {
  font-size: 14px;
  color: var(--accent-burgundy);
  margin-bottom: 12px;
}

.yunlv-explain-desc {
  font-size: 13px;
  color: var(--text-ink-light);
  line-height: 1.7;
}

/* Quiz Styles */
.yunlv-quiz-area {
  max-width: 800px;
  margin: 0 auto;
}

.yunlv-quiz-mode-select {
  text-align: center;
  padding: 40px 20px;
}

.yunlv-quiz-mode-select h2 {
  font-family: 'Noto Serif SC', serif;
  font-size: 24px;
  color: var(--text-ink);
  margin-bottom: 32px;
}

.yunlv-mode-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.yunlv-mode-card {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 32px 24px;
  border: 1px solid var(--border-light);
  cursor: pointer;
  transition: all .3s ease;
  box-shadow: var(--shadow-soft);
  user-select: none;
  -webkit-user-select: none;
}

.yunlv-mode-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-medium);
  border-color: var(--accent-gold);
}

.yunlv-mode-card:active {
  transform: translateY(-2px);
}

.yunlv-mode-card-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.yunlv-mode-card h3 {
  font-family: 'Noto Serif SC', serif;
  font-size: 18px;
  color: var(--text-ink);
  margin-bottom: 8px;
}

.yunlv-mode-card p {
  font-size: 13px;
  color: var(--text-ink-light);
}

.yunlv-quiz-game {
  max-width: 700px;
  margin: 0 auto;
}

.yunlv-quiz-progress {
  margin-bottom: 24px;
}

.yunlv-quiz-progress span {
  font-size: 13px;
  color: var(--text-ink-light);
  margin-bottom: 8px;
  display: block;
}

.yunlv-quiz-card {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 40px;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-soft);
}

.yunlv-quiz-type-badge {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(184,134,11,0.15);
  color: var(--accent-gold);
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 16px;
}

.yunlv-quiz-question {
  font-family: 'Noto Serif SC', serif;
  font-size: 22px;
  color: var(--text-ink);
  margin-bottom: 24px;
}

.yunlv-quiz-audio {
  background: rgba(184,134,11,0.08);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 24px;
  text-align: center;
}

.yunlv-quiz-audio audio {
  width: 100%;
  filter: invert(1);
}

.yunlv-quiz-hint {
  font-size: 12px;
  color: var(--text-ink-light);
  margin-top: 10px;
}

.yunlv-quiz-options {
  display: grid;
  gap: 12px;
  margin-bottom: 24px;
}

.yunlv-quiz-option {
  padding: 16px 20px;
  border-radius: 12px;
  border: 1px solid var(--border-light);
  background: var(--bg-card);
  cursor: pointer;
  transition: all .3s ease;
  text-align: center;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-ink);
}

.yunlv-quiz-option:hover {
  border-color: var(--accent-gold);
  background: #b8860b0d;
  transform: translateY(-2px);
}

.yunlv-quiz-option.correct {
  background: #2e7d321a;
  border-color: #4caf50;
  color: #2e7d32;
}

.yunlv-quiz-option.wrong {
  background: #f443361a;
  border-color: #f44336;
  color: #c62828;
}

.yunlv-quiz-feedback {
  background: rgba(0,0,0,0.03);
  border-radius: 12px;
  padding: 24px;
  margin-top: 24px;
}

.yunlv-feedback-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.yunlv-feedback-icon {
  font-size: 32px;
}

.yunlv-feedback-title {
  font-size: 18px;
  font-weight: 600;
}

.yunlv-feedback-title.correct {
  color: #2e7d32;
}

.yunlv-feedback-title.wrong {
  color: #c62828;
}

.yunlv-feedback-text {
  font-size: 14px;
  color: var(--text-ink-light);
  line-height: 1.7;
  margin-bottom: 12px;
}

.yunlv-feedback-hint {
  padding: 12px 16px;
  background: rgba(184,134,11,0.1);
  border-left: 3px solid var(--accent-gold);
  border-radius: 6px;
  font-size: 13px;
  color: var(--text-ink-light);
}

.yunlv-next-btn {
  width: 100%;
  padding: 16px;
  margin-top: 24px;
  background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-gold-dark) 100%);
  color: #fff;
  border: none;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all .3s ease;
}

.yunlv-next-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px #b8860b66;
}

.yunlv-quiz-result {
  text-align: center;
  padding: 60px 20px;
}

.yunlv-result-icon {
  font-size: 80px;
  margin-bottom: 24px;
}

.yunlv-result-title {
  font-family: 'Noto Serif SC', serif;
  font-size: 32px;
  color: var(--text-ink);
  margin-bottom: 16px;
}

.yunlv-result-score {
  font-size: 48px;
  font-weight: 700;
  color: var(--accent-gold);
  margin-bottom: 12px;
}

.yunlv-result-stats {
  font-size: 16px;
  color: var(--text-ink-light);
  margin-bottom: 32px;
}

.yunlv-result-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* AI Compose */
.yunlv-ai-compose-area {
  max-width: 900px;
  margin: 0 auto;
  background: var(--bg-card);
  border-radius: 16px;
  padding: 40px;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-soft);
}

.yunlv-ai-header {
  text-align: center;
  margin-bottom: 40px;
}

.yunlv-ai-title {
  font-family: 'Noto Serif SC', serif;
  font-size: 28px;
  font-weight: 600;
  color: var(--text-ink);
  margin-bottom: 12px;
}

.yunlv-ai-subtitle {
  font-size: 14px;
  color: var(--text-ink-light);
}

.yunlv-ai-prompt-input {
  width: 100%;
  padding: 20px;
  border-radius: 12px;
  border: 1px solid var(--border-light);
  font-family: inherit;
  font-size: 15px;
  resize: vertical;
  background: var(--bg-paper);
  color: var(--text-ink);
  margin-bottom: 24px;
  min-height: 120px;
  transition: border-color .3s ease;
}

.yunlv-ai-prompt-input:focus {
  outline: none;
  border-color: var(--accent-gold);
}

.yunlv-ai-prompt-input::placeholder {
  color: var(--text-muted);
}

.yunlv-ai-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.yunlv-ai-option-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.yunlv-ai-option-label {
  font-size: 13px;
  color: var(--text-ink-light);
  font-weight: 500;
}

.yunlv-ai-option-select {
  padding: 12px 16px;
  border-radius: 8px;
  border: 1px solid var(--border-light);
  background: var(--bg-card);
  color: var(--text-ink);
  font-size: 14px;
  cursor: pointer;
  transition: all .3s ease;
}

.yunlv-ai-option-select:focus {
  outline: none;
  border-color: var(--accent-gold);
}

.yunlv-compose-btn {
  width: 100%;
  padding: 18px;
  border-radius: 12px;
  border: none;
  background: linear-gradient(135deg, var(--ai-purple) 0%, var(--ai-purple-light) 100%);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all .3s ease;
  box-shadow: 0 4px 16px #8b5cf64d;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.yunlv-compose-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px #8b5cf666;
}

.yunlv-compose-btn:disabled {
  background: var(--border-light);
  color: var(--text-muted);
  cursor: not-allowed;
  box-shadow: none;
}

.yunlv-cost-hint {
  text-align: center;
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-ink-light);
}

.yunlv-cost-hint strong {
  color: var(--accent-gold);
}

/* Loading */
.yunlv-loading {
  text-align: center;
  padding: 60px 20px;
}

.yunlv-spinner {
  width: 48px;
  height: 48px;
  border: 3px solid var(--border-light);
  border-top-color: var(--ai-purple);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 20px;
}

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

.yunlv-loading-text {
  color: var(--text-ink-light);
  font-size: 14px;
}

.yunlv-loading-sub {
  color: var(--text-muted);
  font-size: 12px;
  margin-top: 8px;
}

/* AI Result */
.yunlv-ai-result {
  margin-top: 40px;
  padding: 32px;
  background: var(--bg-paper);
  border-radius: 12px;
  border: 1px solid var(--border-light);
}

.yunlv-ai-result-header {
  text-align: center;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-light);
}

.yunlv-ai-result-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.yunlv-ai-result-title {
  font-family: 'Noto Serif SC', serif;
  font-size: 22px;
  font-weight: 600;
  color: var(--text-ink);
  margin-bottom: 8px;
}

.yunlv-ai-result-meta {
  font-size: 13px;
  color: var(--text-muted);
}

.yunlv-ai-audio-player {
  background: var(--bg-card);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 24px;
}

.yunlv-ai-audio-player audio {
  width: 100%;
  filter: invert(1);
}

.yunlv-ai-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.yunlv-action-btn {
  padding: 12px 24px;
  border-radius: 8px;
  border: 1px solid var(--border-light);
  background: var(--bg-card);
  color: var(--text-ink);
  font-size: 14px;
  cursor: pointer;
  transition: all .3s ease;
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.yunlv-action-btn:hover {
  border-color: var(--accent-gold);
  background: #b8860b0d;
}

.yunlv-action-btn.primary {
  background: var(--accent-gold);
  color: #fff;
  border-color: var(--accent-gold);
}

.yunlv-action-btn.primary:hover {
  background: var(--accent-gold-light);
}

/* Membership */
.yunlv-membership-area {
  max-width: 1100px;
  margin: 0 auto;
}

.yunlv-membership-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.yunlv-membership-card {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 32px 28px;
  border: 1px solid var(--border-light);
  transition: all .3s ease;
  box-shadow: var(--shadow-soft);
  position: relative;
}

.yunlv-membership-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-medium);
}

.yunlv-membership-card.featured {
  border-color: var(--accent-gold);
  box-shadow: 0 8px 32px rgba(184,134,11,.15);
}

.yunlv-membership-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-gold-dark) 100%);
  color: #fff;
  padding: 4px 16px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}

.yunlv-membership-header {
  text-align: center;
  margin-bottom: 28px;
}

.yunlv-membership-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: #fff;
  margin: 0 auto 16px;
  box-shadow: 0 4px 12px rgba(184,134,11,.3);
}

.yunlv-membership-name {
  font-family: 'Noto Serif SC', serif;
  font-size: 22px;
  font-weight: 600;
  color: var(--text-ink);
  margin-bottom: 8px;
}

.yunlv-membership-price {
  font-size: 14px;
  color: var(--text-ink-light);
}

.price-value {
  font-size: 36px;
  font-weight: 700;
  color: var(--accent-gold);
}

.price-unit {
  font-size: 14px;
  color: var(--text-ink-light);
}

.yunlv-membership-features {
  list-style: none;
  margin-bottom: 28px;
}

.yunlv-membership-features li {
  padding: 10px 0;
  font-size: 14px;
  color: var(--text-ink-light);
  line-height: 1.8;
  border-bottom: 1px solid var(--border-light);
}

.yunlv-membership-features li:last-child {
  border-bottom: none;
}

.yunlv-membership-btn {
  width: 100%;
  padding: 14px;
  border-radius: 10px;
  border: 1px solid var(--border-light);
  background: var(--bg-card);
  color: var(--text-ink);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all .3s ease;
}

.yunlv-membership-btn:hover {
  border-color: var(--accent-gold);
  background: #b8860b0d;
}

.yunlv-membership-btn.primary {
  background: var(--accent-gold);
  color: #fff;
  border-color: var(--accent-gold);
}

.yunlv-membership-btn.primary:hover {
  background: var(--accent-gold-light);
}

.yunlv-membership-btn:disabled {
  background: var(--border-light);
  color: var(--text-muted);
  cursor: not-allowed;
}

.yunlv-membership-note {
  text-align: center;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border-light);
}

.yunlv-membership-note p {
  font-size: 13px;
  color: var(--text-ink-light);
  line-height: 2;
}

/* Footer */
.yunlv-footer {
  text-align: center;
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid var(--border-light);
}

.yunlv-footer-text {
  font-size: 12px;
  color: var(--text-muted);
}

.yunlv-footer-links {
  margin-top: 16px;
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.yunlv-footer-links a {
  font-size: 12px;
  color: var(--text-ink-light);
  text-decoration: none;
  transition: color .3s ease;
}

.yunlv-footer-links a:hover {
  color: var(--accent-gold);
}

/* Responsive */
@media (max-width: 768px) {
  .yunlv-page {
    padding: 24px 16px 80px;
  }
  
  .yunlv-header {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }
  
  .yunlv-nav-tabs {
    flex-wrap: wrap;
  }
  
  .yunlv-nav-tab {
    flex: 1 1 45%;
    min-width: auto;
  }
  
  .yunlv-music-grid,
  .yunlv-explain-grid {
    grid-template-columns: 1fr;
  }
  
  .yunlv-ai-compose-area,
  .yunlv-membership-area {
    padding: 24px;
  }
  
  .yunlv-ai-title,
  .yunlv-section-title {
    font-size: 22px;
  }
  
  .yunlv-mode-cards {
    grid-template-columns: 1fr;
  }
  
  .yunlv-membership-grid {
    grid-template-columns: 1fr;
  }
  
  .yunlv-quiz-card {
    padding: 24px;
  }
  
  .yunlv-quiz-question {
    font-size: 18px;
  }
}