/* 成人视频汽车改装视频社区 - 原创样式 */

/* 全局样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #1a2332;
  --secondary-color: #e63946;
  --accent-color: #ff8500;
  --bg-color: #f8f9fa;
  --text-color: #212529;
  --border-radius: 12px;
}

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

/* 头部导航 */
.site-header {
  background: linear-gradient(135deg, var(--primary-color) 0%, #2a3f5f 100%);
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.nav-wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 15px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: white;
  font-size: 24px;
  font-weight: bold;
}

.nav-logo img {
  height: 40px;
  width: auto;
}

.nav-menu {
  display: flex;
  gap: 30px;
}

.nav-menu a {
  color: white;
  text-decoration: none;
  font-size: 16px;
  transition: color 0.3s;
  position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--accent-color);
}

.nav-menu a.active::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--accent-color);
}

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

.nav-toggle span {
  width: 25px;
  height: 3px;
  background: white;
  transition: 0.3s;
}

/* 搜索框 */
.search-section {
  background: white;
  padding: 20px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.search-container {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.search-box {
  width: 100%;
  padding: 15px 50px 15px 20px;
  border: 2px solid #e0e0e0;
  border-radius: 50px;
  font-size: 16px;
  transition: border-color 0.3s;
}

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

.search-btn {
  position: absolute;
  right: 5px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--secondary-color);
  color: white;
  border: none;
  padding: 10px 25px;
  border-radius: 50px;
  cursor: pointer;
  font-size: 16px;
  transition: background 0.3s;
}

.search-btn:hover {
  background: #d62839;
}

/* Hero区域 */
.hero-section {
  position: relative;
  height: 500px;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  text-align: center;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to bottom, rgba(26,35,50,0.6), rgba(26,35,50,0.8));
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  padding: 0 20px;
}

.hero-content h1 {
  font-size: 48px;
  margin-bottom: 20px;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero-content p {
  font-size: 20px;
  margin-bottom: 30px;
}

.cta-button {
  display: inline-block;
  padding: 15px 40px;
  background: var(--secondary-color);
  color: white;
  text-decoration: none;
  border-radius: 50px;
  font-size: 18px;
  font-weight: bold;
  transition: transform 0.3s, box-shadow 0.3s;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(230,57,70,0.4);
}

/* 容器 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 20px;
}

.section-title {
  text-align: center;
  font-size: 36px;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.section-subtitle {
  text-align: center;
  font-size: 18px;
  color: #666;
  margin-bottom: 50px;
}

/* 视频网格 */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 40px;
}

.video-card {
  background: white;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  transition: transform 0.3s, box-shadow 0.3s;
  cursor: pointer;
  position: relative;
}

.video-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.video-thumbnail {
  position: relative;
  width: 100%;
  height: 200px;
  overflow: hidden;
}

.video-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.video-card:hover .video-thumbnail img {
  transform: scale(1.05);
}

.play-button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 60px;
  background: rgba(230,57,70,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s;
}

.video-card:hover .play-button {
  opacity: 1;
}

.play-button::after {
  content: '';
  width: 0;
  height: 0;
  border-left: 20px solid white;
  border-top: 12px solid transparent;
  border-bottom: 12px solid transparent;
  margin-left: 5px;
}

.video-info {
  padding: 20px;
}

.video-title {
  font-size: 18px;
  font-weight: bold;
  margin-bottom: 10px;
  color: var(--primary-color);
}

.video-meta {
  display: flex;
  justify-content: space-between;
  color: #666;
  font-size: 14px;
}

.video-stats {
  display: flex;
  gap: 15px;
}

/* 专家团队 */
.experts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.expert-card {
  background: white;
  border-radius: var(--border-radius);
  padding: 30px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  transition: transform 0.3s;
}

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

.expert-photo {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 20px;
  border: 4px solid var(--secondary-color);
}

.expert-name {
  font-size: 22px;
  font-weight: bold;
  margin-bottom: 10px;
  color: var(--primary-color);
}

.expert-title {
  color: var(--secondary-color);
  font-size: 16px;
  margin-bottom: 15px;
}

.expert-bio {
  color: #666;
  font-size: 14px;
  line-height: 1.6;
}

/* FAQ */
.faq-container {
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  background: white;
  border-radius: var(--border-radius);
  padding: 25px;
  margin-bottom: 20px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.faq-question {
  font-size: 18px;
  font-weight: bold;
  color: var(--primary-color);
  margin-bottom: 10px;
}

.faq-answer {
  color: #666;
  line-height: 1.8;
}

/* 用户评价 */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 25px;
}

.testimonial-card {
  background: white;
  border-radius: var(--border-radius);
  padding: 25px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  position: relative;
}

.testimonial-card::before {
  content: '"';
  position: absolute;
  top: 10px;
  left: 20px;
  font-size: 60px;
  color: var(--secondary-color);
  opacity: 0.2;
}

.testimonial-text {
  color: #666;
  line-height: 1.8;
  margin-bottom: 15px;
  position: relative;
  z-index: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 10px;
}

.author-name {
  font-weight: bold;
  color: var(--primary-color);
}

.rating {
  color: var(--accent-color);
}

/* 页脚 */
.site-footer {
  background: var(--primary-color);
  color: white;
  padding: 40px 20px 20px;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 30px;
}

.footer-section h3 {
  margin-bottom: 20px;
  color: var(--accent-color);
}

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

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

.footer-section a {
  color: #ccc;
  text-decoration: none;
  transition: color 0.3s;
}

.footer-section a:hover {
  color: var(--accent-color);
}

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.1);
  color: #999;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--primary-color);
    flex-direction: column;
    padding: 20px;
    gap: 15px;
  }
  
  .nav-menu.open {
    display: flex;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .hero-content h1 {
    font-size: 32px;
  }
  
  .section-title {
    font-size: 28px;
  }
  
  .video-grid {
    grid-template-columns: 1fr;
  }
}

/* 懒加载占位 */
img[loading="lazy"] {
  background: #f0f0f0;
}

/* 面包屑 */
.breadcrumb {
  padding: 15px 0;
  font-size: 14px;
  color: #666;
}

.breadcrumb a {
  color: var(--secondary-color);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}