/* ============================================
   蜜芽 - 原创样式表
   品牌色系：糖心粉红 + 深夜蓝
   ============================================ */

/* CSS Variables */
:root {
  --tx-primary: #FF2D55;
  --tx-primary-light: #FF6B9D;
  --tx-primary-dark: #D4234A;
  --tx-secondary: #1A1A2E;
  --tx-dark: #0F0F1A;
  --tx-card: #1E1E30;
  --tx-card-hover: #2A2A42;
  --tx-text: #FFFFFF;
  --tx-text-muted: #B8B8CC;
  --tx-text-dim: #8888A0;
  --tx-accent: #FF9EC6;
  --tx-gradient: linear-gradient(135deg, #FF2D55 0%, #FF6B9D 100%);
  --tx-gradient-dark: linear-gradient(180deg, #0F0F1A 0%, #1A1A2E 100%);
  --tx-shadow: 0 4px 24px rgba(255, 45, 85, 0.15);
  --tx-shadow-lg: 0 8px 40px rgba(255, 45, 85, 0.25);
  --tx-radius: 12px;
  --tx-radius-sm: 8px;
  --tx-radius-lg: 20px;
  --tx-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --tx-font: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  --tx-max-width: 1280px;
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--tx-font);
  background: var(--tx-dark);
  color: var(--tx-text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--tx-primary-light); text-decoration: none; transition: var(--tx-transition); }
a:hover { color: var(--tx-primary); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; }

/* Container */
.tx-container { max-width: var(--tx-max-width); margin: 0 auto; padding: 0 20px; }
.tx-section { padding: 70px 0; }
.tx-section-title {
  font-size: 2rem;
  text-align: center;
  margin-bottom: 16px;
  background: var(--tx-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.tx-section-subtitle {
  text-align: center;
  color: var(--tx-text-muted);
  font-size: 1rem;
  margin-bottom: 48px;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

/* Header / Navigation */
.tx-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(15, 15, 26, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 45, 85, 0.1);
  transition: var(--tx-transition);
}
.tx-header-inner {
  max-width: var(--tx-max-width);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.tx-logo { display: flex; align-items: center; gap: 10px; }
.tx-logo img { height: 40px; width: auto; }
.tx-logo-text { font-size: 1.3rem; font-weight: 800; color: var(--tx-primary); }
.tx-nav { display: flex; align-items: center; gap: 6px; }
.tx-nav a {
  color: var(--tx-text-muted);
  font-size: 0.9rem;
  padding: 8px 14px;
  border-radius: var(--tx-radius-sm);
  transition: var(--tx-transition);
  white-space: nowrap;
}
.tx-nav a:hover, .tx-nav a.active {
  color: var(--tx-text);
  background: rgba(255, 45, 85, 0.12);
}
.tx-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}
.tx-mobile-toggle span {
  width: 24px;
  height: 2px;
  background: var(--tx-text);
  border-radius: 2px;
  transition: var(--tx-transition);
}

/* Search Bar */
.tx-search-bar {
  background: var(--tx-secondary);
  padding: 14px 0;
  margin-top: 68px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.tx-search-wrap {
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  gap: 10px;
  padding: 0 20px;
}
.tx-search-input {
  flex: 1;
  padding: 10px 18px;
  border: 2px solid rgba(255, 45, 85, 0.3);
  border-radius: 50px;
  background: var(--tx-card);
  color: var(--tx-text);
  font-size: 0.95rem;
  outline: none;
  transition: var(--tx-transition);
}
.tx-search-input:focus { border-color: var(--tx-primary); }
.tx-search-input::placeholder { color: var(--tx-text-dim); }
.tx-search-btn {
  padding: 10px 28px;
  background: var(--tx-gradient);
  border: none;
  border-radius: 50px;
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--tx-transition);
  white-space: nowrap;
}
.tx-search-btn:hover { transform: scale(1.05); box-shadow: var(--tx-shadow); }

/* Hero Section */
.tx-hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  background: var(--tx-gradient-dark);
}
.tx-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.25;
  filter: blur(2px);
}
.tx-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15,15,26,0.6) 0%, rgba(15,15,26,0.95) 100%);
}
.tx-hero-content {
  position: relative;
  z-index: 2;
  padding: 60px 20px;
  max-width: 800px;
}
.tx-hero h1 {
  font-size: 2.8rem;
  margin-bottom: 18px;
  line-height: 1.2;
}
.tx-hero h1 .tx-highlight {
  background: var(--tx-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.tx-hero p {
  font-size: 1.15rem;
  color: var(--tx-text-muted);
  margin-bottom: 32px;
  line-height: 1.8;
}
.tx-hero-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 32px;
}
.tx-hero-tags span {
  padding: 6px 16px;
  background: rgba(255, 45, 85, 0.12);
  border: 1px solid rgba(255, 45, 85, 0.25);
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--tx-accent);
}
.tx-btn {
  display: inline-block;
  padding: 14px 36px;
  background: var(--tx-gradient);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: var(--tx-transition);
  box-shadow: var(--tx-shadow);
}
.tx-btn:hover { transform: translateY(-2px); box-shadow: var(--tx-shadow-lg); color: #fff; }
.tx-btn-outline {
  background: transparent;
  border: 2px solid var(--tx-primary);
  color: var(--tx-primary);
  box-shadow: none;
}
.tx-btn-outline:hover { background: var(--tx-primary); color: #fff; }

/* Video Card Grid */
.tx-video-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.tx-video-card {
  background: var(--tx-card);
  border-radius: var(--tx-radius);
  overflow: hidden;
  transition: var(--tx-transition);
  cursor: pointer;
}
.tx-video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--tx-shadow-lg);
  background: var(--tx-card-hover);
}
.tx-video-thumb {
  position: relative;
  padding-top: 56.25%;
  overflow: hidden;
  background: #111;
}
.tx-video-thumb img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--tx-transition);
}
.tx-video-card:hover .tx-video-thumb img { transform: scale(1.08); }
.tx-video-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.8);
  width: 56px;
  height: 56px;
  background: rgba(255, 45, 85, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--tx-transition);
  z-index: 3;
}
.tx-video-play::after {
  content: '';
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent #fff;
  margin-left: 3px;
}
.tx-video-card:hover .tx-video-play { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.tx-video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  z-index: 2;
}
.tx-video-info { padding: 14px; }
.tx-video-title {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.4;
}
.tx-video-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.8rem;
  color: var(--tx-text-dim);
}
.tx-video-meta span { display: flex; align-items: center; gap: 4px; }

/* Category Tabs */
.tx-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}
.tx-tab {
  padding: 8px 22px;
  background: var(--tx-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 50px;
  color: var(--tx-text-muted);
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--tx-transition);
}
.tx-tab:hover, .tx-tab.active {
  background: var(--tx-gradient);
  color: #fff;
  border-color: transparent;
}

/* Feature Cards (影视/娱乐/AI模块) */
.tx-feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.tx-feature-card {
  background: var(--tx-card);
  border-radius: var(--tx-radius);
  padding: 32px 24px;
  text-align: center;
  transition: var(--tx-transition);
  border: 1px solid rgba(255,255,255,0.04);
}
.tx-feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 45, 85, 0.3);
  box-shadow: var(--tx-shadow);
}
.tx-feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 18px;
  background: var(--tx-gradient);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
}
.tx-feature-card h4 { font-size: 1.1rem; margin-bottom: 10px; }
.tx-feature-card p { font-size: 0.88rem; color: var(--tx-text-muted); line-height: 1.7; }

/* Expert Section */
.tx-expert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.tx-expert-card {
  background: var(--tx-card);
  border-radius: var(--tx-radius);
  padding: 28px 20px;
  text-align: center;
  transition: var(--tx-transition);
  border: 1px solid rgba(255,255,255,0.04);
}
.tx-expert-card:hover { transform: translateY(-4px); box-shadow: var(--tx-shadow); }
.tx-expert-avatar {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  margin: 0 auto 16px;
  overflow: hidden;
  border: 3px solid var(--tx-primary);
}
.tx-expert-avatar img { width: 100%; height: 100%; object-fit: cover; }
.tx-expert-card h4 { font-size: 1rem; margin-bottom: 4px; }
.tx-expert-role { font-size: 0.82rem; color: var(--tx-primary-light); margin-bottom: 10px; }
.tx-expert-desc { font-size: 0.82rem; color: var(--tx-text-muted); margin-bottom: 14px; line-height: 1.6; }
.tx-expert-btns { display: flex; gap: 8px; justify-content: center; }
.tx-expert-btns a {
  padding: 6px 14px;
  font-size: 0.78rem;
  border-radius: 50px;
  border: 1px solid var(--tx-primary);
  color: var(--tx-primary);
  transition: var(--tx-transition);
}
.tx-expert-btns a:hover { background: var(--tx-primary); color: #fff; }

/* Partner Logos */
.tx-partner-wall {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 30px;
  align-items: center;
}
.tx-partner-logo {
  width: 120px;
  height: 60px;
  background: var(--tx-card);
  border-radius: var(--tx-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  transition: var(--tx-transition);
  border: 1px solid rgba(255,255,255,0.06);
  font-size: 0.85rem;
  color: var(--tx-text-muted);
  font-weight: 600;
}
.tx-partner-logo:hover { border-color: var(--tx-primary); transform: scale(1.05); }

/* Reviews */
.tx-review-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
.tx-review-card {
  background: var(--tx-card);
  border-radius: var(--tx-radius);
  padding: 24px;
  border: 1px solid rgba(255,255,255,0.04);
}
.tx-review-header { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.tx-review-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--tx-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.tx-review-name { font-size: 0.95rem; font-weight: 600; }
.tx-review-date { font-size: 0.78rem; color: var(--tx-text-dim); }
.tx-review-stars { color: #FFD700; font-size: 0.85rem; margin-bottom: 10px; }
.tx-review-text { font-size: 0.88rem; color: var(--tx-text-muted); line-height: 1.7; }

/* FAQ */
.tx-faq-list { max-width: 800px; margin: 0 auto; }
.tx-faq-item {
  background: var(--tx-card);
  border-radius: var(--tx-radius);
  margin-bottom: 12px;
  border: 1px solid rgba(255,255,255,0.04);
  overflow: hidden;
}
.tx-faq-question {
  padding: 18px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--tx-transition);
}
.tx-faq-question:hover { color: var(--tx-primary-light); }
.tx-faq-arrow {
  font-size: 1.2rem;
  transition: var(--tx-transition);
  color: var(--tx-primary);
}
.tx-faq-item.active .tx-faq-arrow { transform: rotate(180deg); }
.tx-faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.tx-faq-answer-inner {
  padding: 0 24px 18px;
  font-size: 0.88rem;
  color: var(--tx-text-muted);
  line-height: 1.8;
}
.tx-faq-item.active .tx-faq-answer { max-height: 300px; }

/* Contact Section */
.tx-contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}
.tx-contact-info {
  background: var(--tx-card);
  border-radius: var(--tx-radius);
  padding: 32px;
}
.tx-contact-item { display: flex; gap: 14px; margin-bottom: 20px; align-items: flex-start; }
.tx-contact-icon {
  width: 42px;
  height: 42px;
  background: rgba(255, 45, 85, 0.12);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
  color: var(--tx-primary);
}
.tx-contact-label { font-size: 0.82rem; color: var(--tx-text-dim); margin-bottom: 2px; }
.tx-contact-value { font-size: 0.92rem; color: var(--tx-text); }
.tx-qrcode-wrap {
  display: flex;
  gap: 24px;
  justify-content: center;
  align-items: flex-start;
}
.tx-qrcode-item { text-align: center; }
.tx-qrcode-item img { width: 140px; height: 140px; border-radius: var(--tx-radius-sm); margin-bottom: 8px; }
.tx-qrcode-item p { font-size: 0.82rem; color: var(--tx-text-muted); }

/* Social Share */
.tx-share-bar {
  display: flex;
  justify-content: center;
  gap: 14px;
  padding: 24px 0;
}
.tx-share-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: #fff;
  transition: var(--tx-transition);
  cursor: pointer;
}
.tx-share-btn:hover { transform: scale(1.15); }
.tx-share-wechat { background: #07C160; }
.tx-share-weibo { background: #E6162D; }
.tx-share-douyin { background: #161823; border: 1px solid #333; }
.tx-share-bilibili { background: #00A1D6; }

/* Footer */
.tx-footer {
  background: var(--tx-secondary);
  border-top: 1px solid rgba(255, 45, 85, 0.1);
  padding: 48px 0 24px;
}
.tx-footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 36px;
}
.tx-footer-brand p { font-size: 0.85rem; color: var(--tx-text-muted); line-height: 1.7; margin-top: 14px; }
.tx-footer h5 { font-size: 0.95rem; margin-bottom: 16px; color: var(--tx-text); }
.tx-footer-links a {
  display: block;
  font-size: 0.85rem;
  color: var(--tx-text-muted);
  padding: 4px 0;
  transition: var(--tx-transition);
}
.tx-footer-links a:hover { color: var(--tx-primary-light); padding-left: 6px; }
.tx-footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: var(--tx-text-dim);
  flex-wrap: wrap;
  gap: 10px;
}

/* Breadcrumb */
.tx-breadcrumb {
  padding: 14px 0;
  font-size: 0.82rem;
  color: var(--tx-text-dim);
}
.tx-breadcrumb a { color: var(--tx-text-muted); }
.tx-breadcrumb a:hover { color: var(--tx-primary-light); }
.tx-breadcrumb span { margin: 0 6px; }

/* How-To Guide */
.tx-howto-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}
.tx-howto-step {
  background: var(--tx-card);
  border-radius: var(--tx-radius);
  padding: 28px 20px;
  text-align: center;
  position: relative;
  counter-increment: step;
}
.tx-howto-step::before {
  content: counter(step);
  display: block;
  width: 40px;
  height: 40px;
  background: var(--tx-gradient);
  border-radius: 50%;
  line-height: 40px;
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 auto 14px;
  color: #fff;
}
.tx-howto-step h4 { font-size: 0.95rem; margin-bottom: 8px; }
.tx-howto-step p { font-size: 0.82rem; color: var(--tx-text-muted); }

/* Community Features */
.tx-community-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.tx-community-card {
  background: var(--tx-card);
  border-radius: var(--tx-radius);
  padding: 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  transition: var(--tx-transition);
  border: 1px solid rgba(255,255,255,0.04);
}
.tx-community-card:hover { border-color: rgba(255, 45, 85, 0.3); transform: translateY(-3px); }
.tx-community-icon {
  width: 48px;
  height: 48px;
  background: rgba(255, 45, 85, 0.12);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}
.tx-community-card h4 { font-size: 0.95rem; margin-bottom: 6px; }
.tx-community-card p { font-size: 0.82rem; color: var(--tx-text-muted); line-height: 1.6; }

/* Stats Bar */
.tx-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding: 40px 0;
}
.tx-stat-item {
  text-align: center;
  padding: 24px;
  background: var(--tx-card);
  border-radius: var(--tx-radius);
}
.tx-stat-num {
  font-size: 2.2rem;
  font-weight: 800;
  background: var(--tx-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.tx-stat-label { font-size: 0.85rem; color: var(--tx-text-muted); margin-top: 4px; }

/* Lazy Load Placeholder */
.tx-lazy { opacity: 0; transition: opacity 0.5s ease; }
.tx-lazy.loaded { opacity: 1; }

/* Back to Top */
.tx-back-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 46px;
  height: 46px;
  background: var(--tx-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.3rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--tx-transition);
  z-index: 999;
  box-shadow: var(--tx-shadow);
}
.tx-back-top.visible { opacity: 1; visibility: visible; }
.tx-back-top:hover { transform: translateY(-3px); }

/* Page Header (Inner Pages) */
.tx-page-header {
  padding: 40px 0 30px;
  background: var(--tx-secondary);
  text-align: center;
  margin-top: 68px;
}
.tx-page-header h1 { font-size: 2rem; margin-bottom: 10px; }
.tx-page-header p { color: var(--tx-text-muted); font-size: 0.95rem; }

/* Responsive */
@media (max-width: 1024px) {
  .tx-video-grid { grid-template-columns: repeat(3, 1fr); }
  .tx-feature-grid { grid-template-columns: repeat(2, 1fr); }
  .tx-expert-grid { grid-template-columns: repeat(2, 1fr); }
  .tx-footer-grid { grid-template-columns: repeat(2, 1fr); }
  .tx-howto-steps { grid-template-columns: repeat(2, 1fr); }
  .tx-stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .tx-nav { 
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: rgba(15, 15, 26, 0.98);
    flex-direction: column;
    padding: 16px;
    gap: 4px;
    border-bottom: 1px solid rgba(255, 45, 85, 0.1);
  }
  .tx-nav.open { display: flex; }
  .tx-nav a { padding: 12px 16px; width: 100%; }
  .tx-mobile-toggle { display: flex; }
  .tx-video-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .tx-feature-grid { grid-template-columns: 1fr; }
  .tx-expert-grid { grid-template-columns: 1fr; }
  .tx-review-grid { grid-template-columns: 1fr; }
  .tx-contact-grid { grid-template-columns: 1fr; }
  .tx-community-grid { grid-template-columns: 1fr; }
  .tx-footer-grid { grid-template-columns: 1fr; }
  .tx-howto-steps { grid-template-columns: 1fr; }
  .tx-hero h1 { font-size: 1.8rem; }
  .tx-section { padding: 48px 0; }
  .tx-section-title { font-size: 1.5rem; }
}
@media (max-width: 480px) {
  .tx-video-grid { grid-template-columns: 1fr; }
  .tx-stats { grid-template-columns: 1fr; }
  .tx-hero h1 { font-size: 1.5rem; }
}

/* 视频描述文字 */
.tx-video-desc {
  font-size: 0.78rem;
  color: var(--tx-text-dim);
  line-height: 1.6;
  margin-top: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 专家资质标签 */
.tx-expert-cred {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 10px 0;
}
.tx-expert-cred span {
  font-size: 0.7rem;
  color: var(--tx-accent);
  background: rgba(255, 158, 198, 0.1);
  border: 1px solid rgba(255, 158, 198, 0.25);
  padding: 2px 8px;
  border-radius: 4px;
}

/* 背景变量 */
.tx-bg { background: var(--tx-dark); }