/* ============================================
   福利姬 - 原创样式表
   品牌：福利姬 | 域名：liuweng.cn
   影视传媒公司 + 视频社区
   ============================================ */

/* --- CSS变量定义 --- */
:root {
  --tx-pink: #FF6B9D;
  --tx-rose: #C44569;
  --tx-gold: #FFD93D;
  --tx-warm-white: #FFF8F0;
  --tx-dark-purple: #2D1B33;
  --tx-text: #333333;
  --tx-light-bg: #F5F0EB;
  --tx-gradient: linear-gradient(135deg, #FF6B9D 0%, #C44569 100%);
  --tx-gradient-gold: linear-gradient(135deg, #FFD93D 0%, #F0A500 100%);
  --tx-shadow: 0 4px 20px rgba(196, 69, 105, 0.15);
  --tx-shadow-hover: 0 8px 30px rgba(196, 69, 105, 0.25);
  --tx-radius: 12px;
  --tx-radius-lg: 20px;
  --tx-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--tx-text);
  background-color: var(--tx-warm-white);
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  color: var(--tx-rose);
  text-decoration: none;
  transition: var(--tx-transition);
}

a:hover {
  color: var(--tx-pink);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul, ol {
  list-style: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* --- 顶部导航栏 --- */
.tx-header {
  background: rgba(255, 248, 240, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 20px rgba(0,0,0,0.06);
  border-bottom: 1px solid rgba(255, 107, 157, 0.1);
}

.tx-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.tx-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--tx-dark-purple);
}

.tx-logo img {
  height: 42px;
  width: auto;
}

.tx-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.tx-nav a {
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.95rem;
  color: var(--tx-text);
  font-weight: 500;
  transition: var(--tx-transition);
}

.tx-nav a:hover,
.tx-nav a.active {
  background: var(--tx-gradient);
  color: #fff;
}

.tx-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}

.tx-mobile-toggle span {
  width: 26px;
  height: 3px;
  background: var(--tx-dark-purple);
  border-radius: 3px;
  transition: var(--tx-transition);
}

/* --- 搜索栏 --- */
.tx-search-bar {
  background: var(--tx-light-bg);
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 107, 157, 0.08);
}

.tx-search-bar .container {
  display: flex;
  justify-content: center;
}

.tx-search-form {
  display: flex;
  align-items: center;
  background: #fff;
  border-radius: 50px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  max-width: 600px;
  width: 100%;
  border: 2px solid transparent;
  transition: var(--tx-transition);
}

.tx-search-form:focus-within {
  border-color: var(--tx-pink);
  box-shadow: 0 4px 20px rgba(255, 107, 157, 0.2);
}

.tx-search-form input {
  flex: 1;
  border: none;
  outline: none;
  padding: 12px 20px;
  font-size: 0.95rem;
  background: transparent;
  color: var(--tx-text);
}

.tx-search-form input::placeholder {
  color: #aaa;
}

.tx-search-form button {
  background: var(--tx-gradient);
  border: none;
  color: #fff;
  padding: 12px 28px;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  transition: var(--tx-transition);
}

.tx-search-form button:hover {
  opacity: 0.9;
}

/* --- Hero Banner --- */
.tx-hero {
  position: relative;
  overflow: hidden;
  min-height: 520px;
  display: flex;
  align-items: center;
  background: var(--tx-dark-purple);
}

.tx-hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.6;
}

.tx-hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(45, 27, 51, 0.8) 0%, rgba(196, 69, 105, 0.5) 100%);
}

.tx-hero-content {
  position: relative;
  z-index: 2;
  color: #fff;
  max-width: 650px;
  padding: 60px 0;
}

.tx-hero-content h1 {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.tx-hero-content h1 span {
  background: var(--tx-gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tx-hero-content p {
  font-size: 1.15rem;
  opacity: 0.9;
  margin-bottom: 30px;
  line-height: 1.8;
}

.tx-hero-stats {
  display: flex;
  gap: 30px;
  margin-top: 30px;
}

.tx-hero-stat {
  text-align: center;
}

.tx-hero-stat strong {
  display: block;
  font-size: 1.8rem;
  font-weight: 800;
  background: var(--tx-gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tx-hero-stat span {
  font-size: 0.85rem;
  opacity: 0.8;
}

/* --- 通用按钮 --- */
.tx-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 30px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--tx-transition);
  cursor: pointer;
  border: none;
}

.tx-btn-primary {
  background: var(--tx-gradient);
  color: #fff;
  box-shadow: 0 4px 15px rgba(255, 107, 157, 0.4);
}

.tx-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(255, 107, 157, 0.5);
  color: #fff;
}

.tx-btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.5);
}

.tx-btn-outline:hover {
  background: rgba(255,255,255,0.15);
  border-color: #fff;
  color: #fff;
}

.tx-btn-gold {
  background: var(--tx-gradient-gold);
  color: var(--tx-dark-purple);
  box-shadow: 0 4px 15px rgba(255, 217, 61, 0.4);
}

/* --- 区块标题 --- */
.tx-section {
  padding: 70px 0;
}

.tx-section-alt {
  background: var(--tx-light-bg);
}

.tx-section-dark {
  background: var(--tx-dark-purple);
  color: #fff;
}

.tx-section-title {
  text-align: center;
  margin-bottom: 50px;
}

.tx-section-title h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--tx-dark-purple);
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.tx-section-dark .tx-section-title h2 {
  color: #fff;
}

.tx-section-title h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--tx-gradient);
  border-radius: 2px;
  margin: 12px auto 0;
}

.tx-section-title p {
  color: #777;
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto;
}

.tx-section-dark .tx-section-title p {
  color: rgba(255,255,255,0.7);
}

/* --- 视频卡片网格 --- */
.tx-video-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.tx-video-card {
  background: #fff;
  border-radius: var(--tx-radius);
  overflow: hidden;
  box-shadow: var(--tx-shadow);
  transition: var(--tx-transition);
  cursor: pointer;
}

.tx-video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--tx-shadow-hover);
}

.tx-video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}

.tx-video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.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, 107, 157, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--tx-transition);
}

.tx-video-card:hover .tx-video-play {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.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-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 600;
}

.tx-video-info {
  padding: 14px 16px;
}

.tx-video-info h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--tx-dark-purple);
  margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tx-video-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.82rem;
  color: #999;
}

.tx-video-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.tx-video-tag {
  display: inline-block;
  background: rgba(255, 107, 157, 0.1);
  color: var(--tx-rose);
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 500;
  margin-top: 8px;
}

/* --- 服务模块 --- */
.tx-services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.tx-service-card {
  background: #fff;
  border-radius: var(--tx-radius-lg);
  padding: 36px 28px;
  text-align: center;
  box-shadow: var(--tx-shadow);
  transition: var(--tx-transition);
  border: 1px solid rgba(255, 107, 157, 0.08);
}

.tx-service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--tx-shadow-hover);
  border-color: var(--tx-pink);
}

.tx-service-icon {
  width: 72px;
  height: 72px;
  background: var(--tx-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.8rem;
  color: #fff;
}

.tx-service-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--tx-dark-purple);
  margin-bottom: 12px;
}

.tx-service-card p {
  color: #777;
  font-size: 0.92rem;
  line-height: 1.7;
}

/* --- 专家团队 --- */
.tx-experts-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}

.tx-expert-card {
  background: #fff;
  border-radius: var(--tx-radius-lg);
  overflow: hidden;
  box-shadow: var(--tx-shadow);
  transition: var(--tx-transition);
  text-align: center;
}

.tx-expert-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--tx-shadow-hover);
}

.tx-expert-avatar {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.tx-expert-info {
  padding: 20px 16px;
}

.tx-expert-info h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--tx-dark-purple);
  margin-bottom: 4px;
}

.tx-expert-info .tx-expert-title {
  color: var(--tx-rose);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 10px;
}

.tx-expert-info p {
  color: #777;
  font-size: 0.85rem;
  line-height: 1.6;
}

.tx-expert-links {
  display: flex;
  justify-content: center;
  gap: 10px;
  padding: 0 16px 20px;
}

.tx-expert-links a {
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
}

.tx-expert-links .tx-link-primary {
  background: var(--tx-gradient);
  color: #fff;
}

.tx-expert-links .tx-link-outline {
  border: 1px solid var(--tx-pink);
  color: var(--tx-rose);
}

/* --- 合作品牌墙 --- */
.tx-partners-wall {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 30px;
  align-items: center;
}

.tx-partner-item {
  background: #fff;
  padding: 20px 30px;
  border-radius: var(--tx-radius);
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  font-size: 1.1rem;
  font-weight: 700;
  color: #999;
  transition: var(--tx-transition);
  min-width: 160px;
  text-align: center;
}

.tx-partner-item:hover {
  color: var(--tx-rose);
  box-shadow: var(--tx-shadow);
}

/* --- 用户评论 --- */
.tx-reviews-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.tx-review-card {
  background: #fff;
  border-radius: var(--tx-radius-lg);
  padding: 28px;
  box-shadow: var(--tx-shadow);
  transition: var(--tx-transition);
}

.tx-review-card:hover {
  box-shadow: var(--tx-shadow-hover);
}

.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;
  color: #fff;
  font-weight: 700;
  font-size: 1.1rem;
}

.tx-review-name {
  font-weight: 600;
  color: var(--tx-dark-purple);
}

.tx-review-stars {
  color: var(--tx-gold);
  font-size: 0.9rem;
}

.tx-review-card p {
  color: #666;
  font-size: 0.92rem;
  line-height: 1.7;
}

.tx-review-date {
  color: #bbb;
  font-size: 0.82rem;
  margin-top: 10px;
}

/* --- FAQ --- */
.tx-faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.tx-faq-item {
  background: #fff;
  border-radius: var(--tx-radius);
  margin-bottom: 12px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.04);
  overflow: hidden;
  border: 1px solid rgba(255, 107, 157, 0.08);
}

.tx-faq-question {
  padding: 18px 24px;
  font-weight: 600;
  color: var(--tx-dark-purple);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--tx-transition);
}

.tx-faq-question:hover {
  color: var(--tx-rose);
}

.tx-faq-question::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--tx-pink);
  transition: var(--tx-transition);
}

.tx-faq-item.active .tx-faq-question::after {
  transform: rotate(45deg);
}

.tx-faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  color: #666;
  font-size: 0.92rem;
  line-height: 1.7;
}

.tx-faq-item.active .tx-faq-answer {
  padding: 0 24px 18px;
  max-height: 300px;
}

/* --- 联系我们 --- */
.tx-contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.tx-contact-card {
  background: rgba(255,255,255,0.08);
  border-radius: var(--tx-radius-lg);
  padding: 32px 24px;
  text-align: center;
  border: 1px solid rgba(255,255,255,0.1);
  transition: var(--tx-transition);
}

.tx-contact-card:hover {
  background: rgba(255,255,255,0.12);
  border-color: var(--tx-pink);
}

.tx-contact-card h3 {
  font-size: 1.1rem;
  margin-bottom: 12px;
  color: var(--tx-gold);
}

.tx-contact-card p {
  color: rgba(255,255,255,0.8);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* --- 社区功能 --- */
.tx-community-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  align-items: center;
}

.tx-community-img {
  border-radius: var(--tx-radius-lg);
  overflow: hidden;
  box-shadow: var(--tx-shadow);
}

.tx-community-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.tx-community-feature {
  background: #fff;
  border-radius: var(--tx-radius);
  padding: 20px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.04);
  transition: var(--tx-transition);
}

.tx-community-feature:hover {
  box-shadow: var(--tx-shadow);
  transform: translateY(-3px);
}

.tx-community-feature h4 {
  font-size: 1rem;
  color: var(--tx-dark-purple);
  margin-bottom: 6px;
}

.tx-community-feature p {
  color: #888;
  font-size: 0.85rem;
}

/* --- How-To指南 --- */
.tx-howto-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}

.tx-howto-step {
  background: #fff;
  border-radius: var(--tx-radius-lg);
  padding: 30px 20px;
  text-align: center;
  box-shadow: var(--tx-shadow);
  position: relative;
  counter-increment: step;
}

.tx-howto-step::before {
  content: counter(step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--tx-gradient);
  color: #fff;
  border-radius: 50%;
  font-size: 1.3rem;
  font-weight: 800;
  margin: 0 auto 16px;
}

.tx-howto-step h4 {
  font-size: 1.05rem;
  color: var(--tx-dark-purple);
  margin-bottom: 8px;
}

.tx-howto-step p {
  color: #888;
  font-size: 0.88rem;
}

/* --- 社交分享 --- */
.tx-share-bar {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.tx-share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 500;
  color: #fff;
  transition: var(--tx-transition);
}

.tx-share-btn:hover {
  transform: translateY(-2px);
  color: #fff;
}

.tx-share-wechat { background: #07C160; }
.tx-share-weibo { background: #E6162D; }
.tx-share-douyin { background: #161823; }
.tx-share-bilibili { background: #00A1D6; }

/* --- 页脚 --- */
.tx-footer {
  background: var(--tx-dark-purple);
  color: rgba(255,255,255,0.8);
  padding: 50px 0 0;
}

.tx-footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.tx-footer-brand h3 {
  font-size: 1.4rem;
  color: #fff;
  margin-bottom: 12px;
}

.tx-footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 16px;
}

.tx-footer-qrcodes {
  display: flex;
  gap: 16px;
}

.tx-footer-qrcode {
  text-align: center;
}

.tx-footer-qrcode img {
  width: 100px;
  height: 100px;
  border-radius: 8px;
  margin-bottom: 6px;
}

.tx-footer-qrcode span {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.6);
}

.tx-footer-col h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 10px;
}

.tx-footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 3px;
  background: var(--tx-gradient);
  border-radius: 2px;
}

.tx-footer-col a {
  display: block;
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  padding: 4px 0;
  transition: var(--tx-transition);
}

.tx-footer-col a:hover {
  color: var(--tx-pink);
  padding-left: 6px;
}

.tx-footer-bottom {
  padding: 20px 0;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
}

.tx-footer-bottom a {
  color: var(--tx-pink);
}

/* --- 面包屑 --- */
.tx-breadcrumb {
  padding: 14px 0;
  font-size: 0.88rem;
  color: #999;
  background: rgba(245, 240, 235, 0.6);
  border-bottom: 1px solid rgba(255, 107, 157, 0.06);
}

.tx-breadcrumb .container {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

.tx-breadcrumb a {
  color: var(--tx-rose);
  font-weight: 500;
}

.tx-breadcrumb a:hover {
  color: var(--tx-pink);
  text-decoration: underline;
}

.tx-breadcrumb span {
  margin: 0 8px;
  color: #ccc;
}

.tx-breadcrumb strong {
  color: var(--tx-dark-purple);
  font-weight: 600;
}

/* --- 页脚Logo --- */
.tx-footer-logo {
  display: block;
  margin-bottom: 16px;
  opacity: 0.9;
  transition: var(--tx-transition);
}

.tx-footer-logo:hover {
  opacity: 1;
}

/* --- 内页通用 --- */
.tx-page-hero {
  background: var(--tx-gradient);
  padding: 50px 0;
  color: #fff;
  text-align: center;
}

.tx-page-hero h1 {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.tx-page-hero p {
  font-size: 1.05rem;
  opacity: 0.9;
}

/* --- 懒加载 --- */
.tx-lazy {
  opacity: 0;
  transition: opacity 0.5s ease;
}

.tx-lazy.loaded {
  opacity: 1;
}

/* --- 响应式 --- */
@media (max-width: 1024px) {
  .tx-video-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .tx-experts-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .tx-footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .tx-header .container {
    height: 60px;
  }

  .tx-nav {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--tx-warm-white);
    flex-direction: column;
    padding: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    gap: 4px;
  }

  .tx-nav.active {
    display: flex;
  }

  .tx-mobile-toggle {
    display: flex;
  }

  .tx-hero-content h1 {
    font-size: 1.8rem;
  }

  .tx-hero {
    min-height: 400px;
  }

  .tx-hero-stats {
    gap: 16px;
  }

  .tx-hero-stat strong {
    font-size: 1.3rem;
  }

  .tx-video-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .tx-services-grid {
    grid-template-columns: 1fr;
  }

  .tx-experts-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .tx-reviews-grid {
    grid-template-columns: 1fr;
  }

  .tx-contact-grid {
    grid-template-columns: 1fr;
  }

  .tx-community-grid {
    grid-template-columns: 1fr;
  }

  .tx-howto-steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .tx-footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .tx-section {
    padding: 50px 0;
  }

  .tx-section-title h2 {
    font-size: 1.6rem;
  }
}

@media (max-width: 480px) {
  .tx-video-grid {
    grid-template-columns: 1fr;
  }

  .tx-experts-grid {
    grid-template-columns: 1fr;
  }

  .tx-howto-steps {
    grid-template-columns: 1fr;
  }

  .tx-hero-content h1 {
    font-size: 1.5rem;
  }

  .tx-hero-stats {
    flex-wrap: wrap;
  }
}

/* --- 动画 --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.tx-animate {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.tx-animate.visible {
  opacity: 1;
  transform: translateY(0);
}