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

  body {
    font-family: 'PingFang SC', -apple-system, Arial, sans-serif;
    line-height: 1.6;
    background: #1a1a2e;
    color: #fff;
    min-height: 1200px;
    position: relative;
    overflow-x: hidden;
  }

  /* 粒子背景 */
  #particles-js {
    position: absolute; 
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0; /* 层级高于内容盒子 */
    background: transparent; /* 移除背景色，融入页面 */
  }

  .chongqing-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 20px;
    position: relative; /* 作为粒子的定位参考 */
    z-index: 1; /* 容器层级低于粒子 */
    min-height: 1200px;
  }

  .content-section {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 50px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    z-index: 5; /* 内容盒子层级低于粒子 */
  }

  .title {
    font-size: 3rem;
    color: #e94560;
    margin-bottom: 30px;
    font-weight: 700;
    text-align: center;
    text-shadow: 0 2px 10px rgba(233, 69, 96, 0.5);
  }

  .description {
    font-size: 1.2rem;
    color: #ddd;
    margin-bottom: 40px;
    line-height: 1.8;
    text-align: justify;
  }

  .image-gallery {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
    flex-wrap: wrap;
    justify-content: center;
  }

  .gallery-img {
    width: 100%;
    max-width: 500px;
    height: 300px;
    object-fit: cover;
    border-radius: 15px;
    transition: transform 0.3s ease;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  }

  .gallery-img:hover {
    transform: scale(1.05);
  }

  .highlight-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-bottom: 50px;
  }

  .highlight-item {
    background: rgba(255, 255, 255, 0.05);
    padding: 25px;
    border-radius: 15px;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
  }

  .highlight-item:hover {
    transform: translateY(-8px);
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
  }

  .highlight-item h3 {
    color: #e94560;
    font-size: 1.3rem;
    margin-bottom: 12px;
  }

  .highlight-item p {
    color: #bbb;
    font-size: 1rem;
  }

  .explore-btn {
    display: flex;
    align-items: center;
    margin: 0 auto;
    padding: 15px 40px;
    font-size: 2rem;
    font-weight: 600;
    text-decoration: none;
    text-align: center;
    display: block;
    color: #fff;
    background: linear-gradient(90deg, #e94560 0%, #932741 100%);
    border: none;
    border-radius: 50px;
    transition: all 0.4s ease;
    box-shadow: 0 5px 15px rgba(233, 69, 96, 0.4);
  }

  .explore-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 10px 25px rgba(233, 69, 96, 0.6);
  }

  .arrow {
    font-size: 1.5rem;
    transition: transform 0.3s ease;
  }

  .explore-btn:hover .arrow {
    transform: translateX(8px);
  }

  /* 响应式设计 */
  @media (max-width: 768px) {
    .content-section {
      padding: 30px;
    }

    .title {
      font-size: 2.2rem;
    }

    .description {
      font-size: 1.1rem;
    }

    .gallery-img {
      max-width: 100%;
      height: 200px;
    }

    .explore-btn {
      padding: 12px 30px;
      font-size: 1.1rem;
    }
  }

  @media (max-width: 480px) {
    .content-section {
      padding: 20px;
    }

    .title {
      font-size: 1.8rem;
    }

    .gallery-img {
      height: 150px;
    }
  }