/* 全局设置 */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    scroll-behavior: smooth;
  }
  
  body {
    font-family: 'Noto Sans SC', sans-serif;
    background-color: #fff;
    color: #000;
    line-height: 1.6;
    overflow-x: hidden;
  }
  
  .logo {
    position: fixed;
    top: 20px;
    left: 20px;
    width: 80px;          /* 可根据需要调整大小 */
    height: auto;
    z-index: 1000;        /* 保证它在最上层 */
  }
  @media (max-width: 768px) {
    .logo {
      width: 60px;
      top: 10px;
      left: 10px;
    }
  }  

  /* 顶部栏整体样式 */
.top-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    padding: 10px 20px;
    border-radius: 0 0 16px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 999;
  }
  
  /* logo 样式（在 top-bar 中时） */
  .top-bar .logo {
    width: 60px;
    height: auto;
  }
  
  /* 导航链接样式 */
  .nav-wrapper {
    flex: 1;
    display: flex;
    justify-content: center;
  }
  .nav-links {
    display: flex;
    gap: 1rem;
  }
  
  .nav-links a {
    text-decoration: none;
    color: #000;
    font-weight: 500;
    padding: 6px 12px;
    border-radius: 8px;
    transition: background 0.3s ease;
  }
  
  .nav-links a:hover {
    background-color: #f2f2f2;
  }
  

  /* 顶部介绍 */
  .intro {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    text-align: center;
    background-color: #fff;

    background-image: url('background.jpg'); /* 👈 替换成你的图片路径 */
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
  }
  
  .intro h1 {
    font-size: 3rem;
    font-weight: bold;
    color: #000;
    margin: 4rem 0;
  }
  
  .intro p {
    font-size: 2rem;
    color: #333;
    margin: 4rem 0;
  }
  
  /* 项目导航链接 */
  .projects {
    padding: 1rem;
  }
  
  .project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
  }
  
  .project-link {
    padding: 1rem;
    background-color: #000;
    color: #fff;
    text-decoration: none;
    border-radius: 8px;
    transition: background 0.3s ease;
    font-size: 1rem;
    display: block;
  }
  
  .project-link:hover {
    background-color: #444;
  }
  
  .link-center {
    text-align: center;
    margin: 4rem 0;
  }
  
  
  /* 每个项目的介绍区域 */
  .project-intro {
    height: 100vh;              /* 占满一整屏高度 */
    display: flex;              /* 用 flex 居中内容 */
    flex-direction: column;
    justify-content: center;    /* 垂直居中 */
    align-items: center;        /* 水平居中 */

    color: #000;              /* 文字白色 */
    padding: 0 20px;            /* 防止文字太贴边 */
    text-align: center;
  }
  
  .project-intro h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
  }
  
  .project-intro p {
    font-size: 1.2rem;
    max-width: 800px;
  }
  
  .project-detail {
    margin: 3rem 0;
    padding: 0 1rem;
  }
  
  .project-detail h2 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    text-align: center;
    margin: 4rem 0;
  }
  
  .project-detail p {
    font-size: 1rem;
    margin-bottom: 1.5rem;
    text-align: center;
    color: #555;
    padding: 0 6rem;
  }

  .trophy-text {
    margin-top: 20px;   /* 与奖杯的距离 */
    margin-bottom: 40px; /* 与下方图片的距离 */
    text-align: center;  /* 可选：居中对齐 */
    font-size: 0.8rem;     /* 可选：调整字体大小 */
  }
  
  .carousel-container {
    position: relative; 
    padding: 0 4vw; /* 左右空出一点空间，vw 是相对屏幕宽度的单位 */
    margin: 2rem 0;  /* 上下间距 */
  }
  
  .carousel-image {
    width: 100%;
    aspect-ratio: 16 / 9; /* 保持 16:9 比例 */
    object-fit: cover;
    flex-shrink: 0;
    transition: transform 0.3s ease;
    border-radius: 12px;
    cursor: pointer;
    margin: 0 auto 1.5rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    display: none;
  }
  
  /* 鼠标悬停放大 */
  .carousel-image:hover {
    transform: scale(1.05);
  }
  
  /* 左右箭头按钮 */
  .carousel-button {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(255, 255, 255, 0.7);
    color: #000;
    border: none;
    padding: 10px 15px;
    font-size: 1.5rem;
    cursor: pointer;
    border-radius: 50%;
    z-index: 10;
  }
  
  .carousel-button.left {
    left: 2vw;
  }
  
  .carousel-button.right {
    right: 2vw;
  }
  
  .award-link {
    text-align: center;
    margin-top: 30px;
  }
  
  .award-link a {
    text-decoration: none;
    color: white; /* 或黑色，根据背景 */
    display: inline-block;
  }
  
  .award-icon {
    width: 160px;
    height: 160px;
    transition: transform 0.3s ease;
  }
  
  .award-icon:hover {
    transform: scale(1.2);
  }
  
  .award-link p {
    margin-top: 8px;
    font-size: 1rem;
  }
  
  /* 响应式设计 */
  @media (max-width: 768px) {
    .intro h1 {
      font-size: 2rem;
    }
  
    .intro p {
      font-size: 1rem;
    }
  
    .project-link {
      font-size: 0.95rem;
      padding: 0.75rem;
    }
  
    .project-detail h2 {
      font-size: 1.5rem;
    }
  
    .project-detail p {
      font-size: 0.95rem;
    }
  }

  .gradient-transition {
    height: 300px; /* 你可以根据需要调整高度 */
    background: linear-gradient(to bottom, #ffffff, rgba(0, 0, 0, 0.5));
  }
  
  .contact-section {
    position: relative;
    background-image: url('contact-bg.jpg'); /* 👉 替换为你的图片路径 */
    background-size: cover;
    background-position: center;
    color: white;
    padding: 80px 20px;
    text-align: center;
    overflow: hidden;
  }
  
  /* 黑色半透明遮罩 */
  .contact-section::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(0, 0, 0, 0.5); /* 可调整透明度 */
    z-index: 1;
  }
  
  /* 让文字在遮罩之上 */
  .contact-section h2,
  .contact-section p,
  .contact-section ul {
    position: relative;
    z-index: 2;
  }
  
  /* 联系方式列表样式 */
  .contact-section ul {
    list-style: none;
    padding: 0;
    margin-top: 20px;
  }
  
  .contact-section li {
    margin: 10px 0;
  }
  
  .contact-section a {
    color: white;
    text-decoration: underline;
  }
  
  .image-indicator {
    text-align: center;
    margin-top: 10px;
    font-size: 0.9rem;
    color: #333;
  }
  
  .carousel-indicator {
    text-align: center;
    font-size: 0.9rem;
    color: #555;
    margin-top: 0.5rem;
  }