/* Base Styles & Variables */
:root {
  --primary-color: #3498db;
  --secondary-color: #2c3e50;
  --accent-color: #e74c3c;
  --text-color: #333;
  --light-color: #f8f9fa;
  --dark-color: #343a40;
  --font-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-heading: 'Arial', sans-serif;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --border-radius: 5px;
  --box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  
  --container-width: 1200px;
  --spacing-xs: 0.5rem;
  --spacing-xl: 6rem;

  /* 超级碗配色 - NFL官方色彩 */
  --primary-blue: #013369;
  --primary-red: #D50A0A;
  --accent-gold: #FFB612;
  --light-gray: #f5f5f5;
  --dark-gray: #333333;
  --white: #ffffff;
  --black: #000000;
  
  /* 字体设置 */
  --heading-font: 'Montserrat', sans-serif;
  --body-font: 'Open Sans', sans-serif;
}

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

body {
  font-family: var(--body-font);
  line-height: 1.6;
  color: var(--dark-gray);
  background-color: var(--white);
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

img, video {
  max-width: 100%;
  height: auto;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--heading-font);
  margin-bottom: 1rem;
  color: var(--dark-gray);
}

h1 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-lg);
}

h2 {
  font-size: 2rem;
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
}

p {
  margin-bottom: var(--spacing-md);
}

a {
  text-decoration: none;
  color: var(--primary-blue);
  transition: color 0.3s ease;
}

a:hover {
  color: var(--primary-red);
}

.responsive-img {
  display: block;
  width: 100%;
  border-radius: var(--border-radius);
}

.video-container, .interactive-container {
  margin: var(--spacing-lg) 0;
}

.video-placeholder {
  background-color: #f0f0f0;
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  text-align: center;
  margin: var(--spacing-md) 0;
}

.site-header {
  background-color: var(--secondary-color);
  color: white;
  padding: var(--spacing-sm) 0;
  position: relative;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.logo {
  margin-right: var(--spacing-lg);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

.logo h1 {
  color: white;
  margin-bottom: 0;
  margin-right: var(--spacing-sm);
  font-size: 1.8rem;
}

.tagline {
  margin-bottom: 0;
  font-size: 0.9rem;
  opacity: 0.8;
  white-space: nowrap;
}

.main-nav {
  margin-left: auto;
}

.main-nav ul {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

.main-nav li {
  margin: 0 var(--spacing-xs);
}

.main-nav a {
  color: white;
  text-decoration: none;
  padding: var(--spacing-xs) var(--spacing-sm);
  display: block;
  font-weight: 500;
  transition: all 0.3s ease;
  border-radius: var(--border-radius);
  font-size: 0.95rem;
}

.main-nav a:hover, 
.main-nav a.active {
  background-color: rgba(255, 255, 255, 0.1);
}

section {
  padding: 60px 0;
}

section:nth-child(even) {
  background-color: #f5f5f5;
}

.hero-section {
  background: linear-gradient(135deg, #3a7bd5, #00d2ff);
  color: white;
  padding: var(--spacing-md) 0;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('https://images.unsplash.com/photo-1533174072545-7a4b6ad7a6a3?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80') center/cover no-repeat; /* 添加背景图片 */
  opacity: 0.2; /* 降低背景图片不透明度 */
  z-index: 1;
}

.hero-section::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, transparent 20%, #3a7bd5 80%);
  opacity: 0.7;
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: left;
  max-width: 600px;
  margin-right: auto;
}

.hero-content h2 {
  margin-bottom: var(--spacing-sm);
}

.hero-content p {
  margin-bottom: var(--spacing-md);
}

.hero-section h2 {
  color: white;
  font-size: 2.5rem;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-section p {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-lg);
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
}

.hero-media {
  position: relative;
  z-index: 3;
}

.info-grid, .trending-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

.info-item, .trending-item {
  background-color: white;
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

.tutorial-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: center;
}

.faq-item {
  background-color: white;
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

.reference {
  font-size: 0.9rem;
  color: #666;
  font-style: italic;
}

footer {
  background-color: var(--primary-blue);
  color: var(--white);
  padding: 60px 0 20px;
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  margin-bottom: 40px;
}

.social-icons {
  display: flex;
  gap: 15px;
}

.social-icon {
  width: 30px;
  height: 30px;
}

.footer-nav ul {
  list-style: none;
}

.footer-nav li {
  margin-bottom: var(--spacing-sm);
}

.footer-nav a {
  color: white;
}

.copyright {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.copyright p {
  margin-bottom: 10px;
  font-size: 0.9rem;
  opacity: 0.8;
}

.copyright a {
  color: var(--white);
  opacity: 0.8;
  transition: opacity 0.3s ease;
}

.copyright a:hover {
  opacity: 1;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    text-align: center;
  }
  
  .logo {
    margin-right: 0;
    margin-bottom: var(--spacing-sm);
    flex-direction: column;
    align-items: center;
  }
  
  .logo h1 {
    margin-right: 0;
  }
  
  .main-nav {
    margin-left: 0;
    width: 100%;
  }
  
  .main-nav ul {
    justify-content: center;
  }
  
  .main-nav li {
    margin: var(--spacing-xs) var(--spacing-xs);
  }
}

/* 添加视频网格样式 */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.video-item {
  background-color: white;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--box-shadow);
}

.video-embed {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 比例 */
  height: 0;
  overflow: hidden;
}

.video-embed iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-item h3 {
  padding: var(--spacing-sm) var(--spacing-md);
  margin-bottom: var(--spacing-xs);
  font-size: 1.2rem;
}

.video-item p {
  padding: 0 var(--spacing-md) var(--spacing-md);
  margin-bottom: 0;
  color: #666;
  font-size: 0.9rem;
}

/* 修改游戏部分的图片样式 */
.tutorial-img {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-md);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* 修改新闻视频容器样式 */
.news-video {
  flex: 1;
  min-width: 300px;
  position: relative;
}

/* 修改视频容器样式 */
.video-container {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 宽高比 */
  height: 0;
  overflow: hidden;
  border-radius: 8px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.caption {
  text-align: center;
  font-style: italic;
  color: rgba(255, 255, 255, 0.8);
  margin-top: var(--spacing-xs);
}

/* 修改按钮样式使其更加突出 */
.primary-btn {
  display: inline-block;
  background-color: var(--accent-color);
  color: white;
  padding: 0.8rem 1.5rem;
  border-radius: 30px;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: all 0.3s ease;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.primary-btn:hover {
  background-color: #c0392b;
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
  text-decoration: none;
  color: white;
}

/* 响应式布局调整 */
@media (min-width: 992px) {
  .hero-section .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    align-items: center;
  }
  
  .hero-content {
    margin-right: 0;
  }
}

/* 减少游戏部分的间距 */
.game-section {
  padding-top: var(--spacing-md);
  padding-bottom: var(--spacing-md);
}

/* 减少视频部分的间距 */
.videos-section {
  padding-top: var(--spacing-md);
  padding-bottom: var(--spacing-md);
}

/* 补充样式 - 添加到现有样式表底部 */

/* 按钮样式 */
.btn {
  display: inline-block;
  padding: 10px 20px;
  background-color: var(--primary-blue);
  color: var(--white);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.3s ease;
  font-weight: 600;
  text-align: center;
}

.btn:hover {
  background-color: var(--primary-red);
  color: var(--white);
  text-decoration: none;
}

.btn-large {
  padding: 12px 24px;
  font-size: 1.1rem;
}

/* 头部导航样式 */
header {
  background-color: var(--white);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px;
}

.logo h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-blue);
  margin: 0;
}

nav ul {
  display: flex;
  list-style: none;
}

nav ul li {
  margin-left: 25px;
}

nav ul li a {
  color: var(--dark-gray);
  font-weight: 600;
  padding: 5px 0;
  position: relative;
}

nav ul li a:after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  background-color: var(--primary-red);
  bottom: 0;
  left: 0;
  transition: width 0.3s ease;
}

nav ul li a:hover:after,
nav ul li a.active:after {
  width: 100%;
}

/* 热门新闻区域 */
.hero {
  background-color: var(--light-gray);
  padding: 40px 0;
}

.trending-news h2 {
  color: var(--primary-blue);
  font-size: 2rem;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}

.trending-news h2:after {
  content: '';
  position: absolute;
  width: 60px;
  height: 3px;
  background-color: var(--primary-red);
  bottom: 0;
  left: 0;
}

.news-content {
  display: flex;
  align-items: stretch; /* 确保子元素高度一致 */
  gap: 2rem;
}

.news-text, .news-video {
  flex: 1; /* 均等分配空间 */
  display: flex;
  flex-direction: column;
}

.news-text {
  justify-content: space-between; /* 内容均匀分布 */
}

.news-text h3 {
  font-size: 1.8rem;
  margin-bottom: 15px;
  color: var(--dark-gray);
}

.news-text p {
  margin-bottom: 20px;
  font-size: 1.1rem;
  line-height: 1.7;
}

.news-video {
  display: flex;
  align-items: center; /* 垂直居中 */
  justify-content: center; /* 水平居中 */
}

.video-container {
  width: 100%;
  height: 0;
  padding-bottom: 56.25%; /* 16:9 宽高比 */
  position: relative;
  overflow: hidden;
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 8px; /* 圆角边框 */
}

/* 教程亮点区域 */
.tutorial-highlights {
  background-color: var(--white);
}

.tutorial-highlights h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 40px;
  color: var(--primary-blue);
}

.tutorial-preview {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  align-items: center;
}

.tutorial-steps {
  flex: 1;
  min-width: 300px;
}

.step {
  display: flex;
  margin-bottom: 20px;
  align-items: flex-start;
}

.step-number {
  background-color: var(--primary-blue);
  color: var(--white);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.2rem;
  margin-right: 15px;
  flex-shrink: 0;
}

.step-content h3 {
  margin-bottom: 5px;
  font-size: 1.3rem;
}

.tutorial-video {
  flex: 1;
  min-width: 300px;
  text-align: center;
}

.tutorial-video img {
  border-radius: 8px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  margin-bottom: 20px;
}

/* 历史文化区域 */
.history-culture {
  background-color: var(--light-gray);
}

.history-culture h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 40px;
  color: var(--primary-blue);
}

.history-content {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  align-items: center;
}

.history-text {
  flex: 1;
  min-width: 300px;
}

.history-text p {
  font-size: 1.2rem;
  line-height: 1.7;
  margin-bottom: 20px;
}

.history-timeline {
  margin-top: 2rem;
  padding-left: 1rem;
}

.timeline-item {
  display: flex;
  margin-bottom: 1.5rem;
  position: relative;
}

.timeline-marker {
  flex: 0 0 80px;
  position: relative;
}

.timeline-marker::after {
  content: '';
  position: absolute;
  top: 50%;
  right: 10px;
  width: 15px;
  height: 2px;
  background-color: #3498db;
}

.timeline-marker .year {
  display: block;
  font-weight: bold;
  color: #3498db;
  font-size: 1rem;
}

.timeline-content {
  flex: 1;
  padding-left: 1.5rem;
  border-left: 2px solid #3498db;
  padding-bottom: 0.5rem;
}

.timeline-content p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.4;
}

/* 名人区域 */
.celebrities {
  background-color: var(--white);
}

.celebrities h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 40px;
  color: var(--primary-blue);
}

.celebrity-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 30px;
}

.celebrity-card {
  background-color: var(--white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.celebrity-card:hover {
  transform: translateY(-5px);
}

.celebrity-card img {
  width: 100%;
  height: 300px;  /* 增加高度以显示更多图片内容 */
  object-fit: cover;
  object-position: top;  /* 确保从上往下显示图片 */
}

.celebrity-card h3 {
  padding: 15px 15px 5px;
  font-size: 1.3rem;
}

.celebrity-card p {
  padding: 0 15px 15px;
  color: var(--dark-gray);
}

.celebrity-card a {
  display: block;
  padding: 10px 15px;
  background-color: var(--primary-blue);
  color: var(--white);
  text-align: center;
  transition: background-color 0.3s ease;
}

.celebrity-card a:hover {
  background-color: var(--primary-red);
}

/* 社交媒体区域 */
.social-media {
  background-color: var(--light-gray);
}

.social-media h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 20px;
  color: var(--primary-blue);
}

.hashtags {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 15px;
  margin-bottom: 30px;
}

.hashtag {
  background-color: var(--primary-blue);
  color: var(--white);
  padding: 8px 15px;
  border-radius: 20px;
  font-weight: 600;
  font-size: 0.9rem;
}

.social-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 30px;
}

.social-card {
  background-color: var(--white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.social-header {
  padding: 10px 15px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}

.social-header i {
  font-size: 1.2rem;
}

.tiktok .social-header {
  background-color: #000000;
  color: #ffffff;
}

.instagram .social-header {
  background: linear-gradient(45deg, #405DE6, #5851DB, #833AB4, #C13584, #E1306C, #FD1D1D);
  color: #ffffff;
}

.twitter .social-header {
  background-color: #1DA1F2;
  color: #ffffff;
}

.social-content {
  padding: 15px;
}

.social-content img {
  width: 100%;
  border-radius: 4px;
}

.social-media .btn-large {
  display: block;
  width: fit-content;
  margin: 0 auto;
}

/* 页脚区域 */
.footer-section {
  flex: 1;
  min-width: 250px;
}

.footer-section h3 {
  color: var(--white);
  margin-bottom: 20px;
  font-size: 1.3rem;
  position: relative;
  padding-bottom: 10px;
}

.footer-section h3:after {
  content: '';
  position: absolute;
  width: 40px;
  height: 2px;
  background-color: var(--accent-gold);
  bottom: 0;
  left: 0;
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: 10px;
}

.footer-section ul li a {
  color: var(--white);
  opacity: 0.8;
  transition: opacity 0.3s ease;
}

.footer-section ul li a:hover {
  opacity: 1;
}

.newsletter-form {
  display: flex;
  margin-top: 15px;
}

.newsletter-form input {
  flex: 1;
  padding: 10px;
  border: none;
  border-radius: 4px 0 0 4px;
}

.newsletter-form button {
  padding: 10px 15px;
  background-color: var(--primary-red);
  color: var(--white);
  border: none;
  border-radius: 0 4px 4px 0;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.newsletter-form button:hover {
  background-color: var(--accent-gold);
  color: var(--dark-gray);
}

/* 移动端响应式调整 */
@media (max-width: 768px) {
  header .container {
    flex-direction: column;
  }
  
  nav ul {
    margin-top: 15px;
    flex-wrap: wrap;
    justify-content: center;
  }
  
  nav ul li {
    margin: 5px 10px;
  }
  
  .news-content {
    flex-direction: column;
  }
  
  .news-text, .news-video {
    width: 100%;
  }
  
  .history-timeline {
    margin-top: 2rem;
    padding-left: 0;
  }
  
  .timeline-marker {
    flex: 0 0 60px;
  }
  
  .social-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    flex-direction: column;
    gap: 30px;
  }
}

@media (max-width: 480px) {
  .logo h1 {
    font-size: 1.5rem;
  }
  
  nav ul li {
    margin: 5px;
  }
  
  .trending-news h2,
  .tutorial-highlights h2,
  .history-culture h2,
  .celebrities h2,
  .social-media h2 {
    font-size: 1.5rem;
  }
  
  .news-text h3 {
    font-size: 1.3rem;
  }
  
  .btn {
    padding: 8px 16px;
    font-size: 0.9rem;
  }
  
  .btn-large {
    padding: 10px 20px;
    font-size: 1rem;
  }
}

/* 更新导航样式以适应更多项目 */
header nav ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

header nav ul li {
    margin: 0 10px;
}

@media (max-width: 768px) {
    header nav ul {
        flex-direction: column;
        align-items: center;
    }
    
    header nav ul li {
        margin: 5px 0;
    }
}

/* 添加表单提示样式 */
.form-note {
    font-size: 0.8rem;
    color: #999;
    margin-top: 5px;
    font-style: italic;
}

/* 教程网格布局 */
.tutorial-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 30px;
}

.tutorial-item {
  display: flex;
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

.tutorial-text {
  flex: 1;
  padding: 15px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.tutorial-text h3 {
  margin-bottom: 10px;
  color: var(--primary-blue);
  font-size: 1.2rem;
}

.tutorial-text p {
  margin-bottom: 0;
  font-size: 0.95rem;
  line-height: 1.5;
}

.tutorial-image {
  flex: 1;
  max-width: 50%;
}

.tutorial-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.tutorial-note-container {
  text-align: center;
  margin-top: 20px;
}

.tutorial-note {
  font-style: italic;
  color: #666;
  margin-bottom: 15px;
}

/* 响应式调整 */
@media (max-width: 992px) {
  .tutorial-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 576px) {
  .tutorial-item {
    flex-direction: column;
  }
  
  .tutorial-image {
    max-width: 100%;
  }
  
  .tutorial-image img {
    height: 200px;
  }
}

/* 视频教程部分的样式 */
.video-tutorials {
    padding: 4rem 0;
    background-color: var(--light-gray);
}

/* 特色视频样式 */
.featured-video {
    margin-bottom: 3rem;
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.featured-video h3 {
    padding: 2rem;
    margin: 0;
    font-size: 2rem;
    color: var(--primary-blue);
    border-bottom: 1px solid var(--light-gray);
    text-align: center;
}

.featured-video .video-wrapper {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
    height: 0;
    overflow: hidden;
    margin: 0 auto;
    max-width: 100%;
}

.featured-video .video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.featured-video p {
    padding: 2rem;
    margin: 0;
    font-size: 1.2rem;
    color: var(--dark-gray);
    text-align: center;
}

/* 视频网格样式 */
.video-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 3rem; /* 增加与特色视频的间距 */
}

.video-card {
    background: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.video-card:hover {
    transform: translateY(-5px);
}

.video-card h3 {
    padding: 1rem;
    margin: 0;
    font-size: 1.1rem;
    color: var(--primary-blue);
    min-height: 4rem;
    display: flex;
    align-items: center;
}

.video-card .video-wrapper {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
}

.video-card .video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.video-card p {
    padding: 1rem;
    margin: 0;
    color: var(--dark-gray);
    font-size: 0.95rem;
}

/* 响应式调整 */
@media (max-width: 1200px) {
    .featured-video {
        margin: 0 1rem 3rem 1rem;
    }
    
    .featured-video h3 {
        padding: 1.5rem;
        font-size: 1.8rem;
    }
    
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .featured-video h3 {
        padding: 1.2rem;
        font-size: 1.5rem;
    }
    
    .featured-video p {
        padding: 1.2rem;
        font-size: 1.1rem;
    }
    
    .video-grid {
        grid-template-columns: 1fr;
    }
}

/* Step by Step Guide Section */
.step-by-step-guide {
    padding: 4rem 0;
    background-color: var(--light-gray);
}

.step-container {
    margin-bottom: 3rem;
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.step-content {
    display: flex;
    align-items: center;
    gap: 2rem;
    padding: 2rem;
}

.step-text {
    flex: 1;
    max-width: 40%;
}

.step-text h3 {
    color: var(--primary-blue);
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 1rem;
}

.step-text h3:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--primary-red);
}

.step-image {
    flex: 1;
    max-width: 60%;
}

.step-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.step-instructions ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
}

.step-instructions li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
    font-size: 1.1rem;
    line-height: 1.5;
}

.step-instructions li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary-blue);
}

.tutorial-note-container {
    text-align: center;
    margin-top: 3rem;
}

.tutorial-note {
    font-style: italic;
    color: var(--dark-gray);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

/* Responsive adjustments */
@media (max-width: 992px) {
    .step-content {
        flex-direction: column;
    }
    
    .step-text,
    .step-image {
        max-width: 100%;
    }
    
    .step-text {
        margin-bottom: 2rem;
    }
}

@media (max-width: 768px) {
    .step-text h3 {
        font-size: 1.3rem;
    }
    
    .step-instructions li {
        font-size: 1rem;
    }
    
    .step-content {
        padding: 1.5rem;
    }
}

/* 确保视频教程部分的容器样式正确 */
.video-tutorials .container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* 添加一些视觉区分 */
.featured-video::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(to right, var(--primary-blue), var(--primary-red));
}

/* 页面英雄区域布局调整 */
.page-hero {
  padding: 40px 0;
}

.breadcrumbs {
  margin-bottom: 20px;
  font-size: 0.9rem;
}

.hero-title h1 {
  margin-bottom: 15px;
}

.hero-title .subtitle {
  font-size: 1.2rem;
  color: #666;
}

/* In-Depth Articles Section */
.in-depth-articles {
    padding: var(--spacing-xl) 0;
    background-color: var(--light-color);
}

.in-depth-articles h2 {
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--secondary-color);
    font-size: 2.2rem;
}

.section-description {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
    color: var(--text-color);
    font-size: 1.1rem;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.article-card {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-decoration: none;
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.article-content {
    padding: var(--spacing-lg);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.article-card h3 {
    color: var(--secondary-color);
    margin-bottom: var(--spacing-md);
    font-size: 1.4rem;
}

.article-card p {
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
    flex-grow: 1;
}

.read-more {
    color: var(--primary-color);
    font-weight: 500;
    display: flex;
    align-items: center;
    margin-top: auto;
}

.read-more i {
    margin-left: var(--spacing-xs);
    transition: transform 0.2s ease;
}

.article-card:hover .read-more i {
    transform: translateX(5px);
}

@media (max-width: 768px) {
    .articles-grid {
        grid-template-columns: 1fr;
    }
    
    .article-card {
        max-width: 500px;
        margin: 0 auto;
    }
}

/* Celebrity Spotlight Section */
.celebrity-spotlight {
  padding: 60px 0;
  background-color: var(--white);
}

.celebrity-spotlight h2 {
  text-align: center;
  margin-bottom: 40px;
  color: var(--primary-blue);
  font-size: 2.2rem;
}

.spotlight-content {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 40px;
}

.spotlight-info {
  flex: 1;
}

.spotlight-info h3 {
  font-size: 1.8rem;
  margin-bottom: 20px;
  color: var(--dark-gray);
}

.spotlight-info p {
  margin-bottom: 15px;
  line-height: 1.7;
}

.spotlight-media {
  flex: 1;
}

.spotlight-facts {
  display: flex;
  gap: 30px;
  margin: 30px 0;
}

.fact {
  text-align: center;
}

.fact-number {
  display: block;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-red);
  line-height: 1;
}

.fact-text {
  font-size: 0.9rem;
  color: var(--dark-gray);
}

@media (max-width: 992px) {
  .spotlight-content {
    flex-direction: column-reverse;
  }
  
  .spotlight-info, .spotlight-media {
    width: 100%;
  }
  
  .spotlight-facts {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .spotlight-facts {
    flex-direction: column;
    gap: 15px;
  }
  
  .fact-number {
    font-size: 2rem;
  }
}

/* Iconic Moments Section */
.iconic-moments {
  padding: 60px 0;
  background-color: var(--light-gray);
}

.iconic-moments h2 {
  text-align: center;
  margin-bottom: 40px;
  color: var(--primary-blue);
  font-size: 2.2rem;
}

.moments-grid {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.moment-card {
  display: flex;
  background-color: var(--white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.moment-card:hover {
  transform: translateY(-5px);
}

.moment-content {
  flex: 1;
  padding: 30px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.moment-content h3 {
  font-size: 1.6rem;
  margin-bottom: 15px;
  color: var(--primary-blue);
}

.moment-content p {
  margin-bottom: 15px;
  line-height: 1.6;
}

.moment-content .btn {
  align-self: flex-start;
  margin-top: 15px;
}

.moment-media {
  flex: 1;
  min-height: 350px;
  overflow: hidden;
}

.moment-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.placeholder-image {
  width: 100%;
  height: 100%;
  background-color: #e0e0e0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #666;
  font-weight: 500;
  font-size: 1.2rem;
}

@media (max-width: 992px) {
  .moment-card {
    flex-direction: column;
  }
  
  .moment-content, .moment-media {
    width: 100%;
  }
  
  .moment-media {
    min-height: 250px;
    order: -1; /* 图片始终在上方 */
  }
}

@media (max-width: 768px) {
  .moment-content h3 {
    font-size: 1.4rem;
  }
  
  .moment-content p {
    font-size: 0.95rem;
  }
}

/* Media Coverage Section */
.media-coverage {
  padding: 60px 0;
  background-color: var(--white);
}

.media-coverage h2 {
  text-align: center;
  margin-bottom: 40px;
  color: var(--primary-blue);
  font-size: 2.2rem;
}

.media-grid {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.media-card {
  background-color: var(--white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.media-card:hover {
  transform: translateY(-5px);
}

.media-content {
  display: flex;
  flex-direction: row;
}

.media-text {
  flex: 1;
  padding: 30px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.media-header {
  display: flex;
  align-items: center;
  margin-bottom: 15px;
}

.media-header img {
  height: 30px;
  width: auto;
  margin-right: 15px;
}

.media-date {
  font-size: 0.9rem;
  color: #666;
}

.media-text h3 {
  font-size: 1.5rem;
  margin-bottom: 15px;
  color: var(--primary-blue);
}

.media-text p {
  margin-bottom: 20px;
  line-height: 1.6;
}

.media-text .btn-small {
  align-self: flex-start;
  padding: 8px 16px;
  font-size: 0.9rem;
}

.media-image {
  flex: 1;
  min-height: 300px;
  overflow: hidden;
}

.media-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* 响应式调整 */
@media (max-width: 992px) {
  .media-content {
    flex-direction: column;
  }
  
  .media-text, .media-image {
    width: 100%;
  }
  
  .media-image {
    min-height: 250px;
    order: -1; /* 在移动设备上图片显示在上方 */
  }
}

@media (max-width: 768px) {
  .media-text h3 {
    font-size: 1.3rem;
  }
  
  .media-text p {
    font-size: 0.95rem;
  }
  
  .media-header img {
    height: 24px;
  }
}

/* Articles Section */
.articles {
    padding: 60px 0;
    background-color: #f8f9fa;
}

.articles h2 {
    text-align: center;
    margin-bottom: 40px;
    font-size: 2.5rem;
    color: #333;
}

.article-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.article-card {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.article-card-content {
    padding: 25px;
}

.article-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: #222;
    line-height: 1.3;
}

.article-card p {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    font-size: 0.85rem;
    color: #888;
}

.view-all-container {
    text-align: center;
}

/* Article Content Page Styles */
.article-content {
    padding: 60px 0;
}

.article-content .container {
    display: grid;
    grid-template-columns: 3fr 1fr;
    gap: 40px;
}

.article-header {
    margin-bottom: 30px;
}

.article-header h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    line-height: 1.2;
    color: #222;
}

.article-meta {
    display: flex;
    gap: 20px;
    color: #777;
    font-size: 0.9rem;
}

.article-section {
    margin-bottom: 40px;
}

.article-section h2 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: #333;
}

.article-section h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: #444;
}

.article-section p {
    margin-bottom: 20px;
    line-height: 1.7;
    color: #555;
}

.article-section ul {
    margin-bottom: 20px;
    padding-left: 20px;
}

.article-section li {
    margin-bottom: 10px;
    line-height: 1.6;
}

.comparison-block {
    background-color: #f8f9fa;
    padding: 25px;
    border-radius: 8px;
    margin-bottom: 25px;
}

.conclusion {
    background-color: #f0f4f8;
    padding: 25px;
    border-radius: 8px;
}

.article-references {
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid #eee;
}

.article-references h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.article-references ul {
    padding-left: 20px;
}

.article-references li {
    margin-bottom: 10px;
}

.article-sidebar {
    position: sticky;
    top: 30px;
    align-self: start;
}

.related-articles, .share-article {
    background-color: #f8f9fa;
    padding: 25px;
    border-radius: 8px;
    margin-bottom: 30px;
}

.related-articles h3, .share-article h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #333;
}

.related-articles ul {
    padding-left: 20px;
}

.related-articles li {
    margin-bottom: 12px;
}

.social-share-buttons {
    display: flex;
    gap: 10px;
}

.share-button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    color: white;
    transition: transform 0.2s ease;
}

.share-button:hover {
    transform: scale(1.1);
}

.facebook {
    background-color: #3b5998;
}

.twitter {
    background-color: #1da1f2;
}

.instagram {
    background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
}

.pinterest {
    background-color: #bd081c;
}

/* Responsive Styles for Articles */
@media (max-width: 992px) {
    .article-content .container {
        grid-template-columns: 1fr;
    }
    
    .article-sidebar {
        position: static;
    }
}

@media (max-width: 768px) {
    .article-cards {
        grid-template-columns: 1fr;
    }
    
    .article-header h1 {
        font-size: 2rem;
    }
    
    .article-section h2 {
        font-size: 1.6rem;
    }
}