* {
      box-sizing: border-box;
    }
    body {
    margin: 0;
    font-family: "Helvetica Neue", sans-serif;
    background-image: url("../assets/slides/slide1.jpg"); /* 背景图路径，根据你实际修改 */
    background-size: cover;
    background-attachment: fixed;
    background-position: center;
    color: #2a2a3c;
    line-height: 1.6;
  }

  .content-wrapper {
    background-color: rgba(255, 255, 255, 0.88); /* 半透明白底 */
    max-width: 960px;
    margin: 2rem auto;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  }

  @media (max-width: 600px) {
    .content-wrapper {
      margin: 1rem;
      padding: 1rem;
    }
  }

   header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 1rem 2rem;
      background-color: #2D3436;
      color: #e0e6f1;
      position: sticky;
      top: 0;
      z-index: 1000;
      box-shadow: 0 2px 6px rgba(0,0,0,0.15);
    }

    header h1 {
      margin: 0;
      color: #E0E6F1;
      font-weight: 600;
      font-size: 1.8rem;
      letter-spacing: 1px;
    }

    header .logo {
      font-size: 18px;
      font-weight: bold;
    }

    nav a {
      color: #cfd9f3;
      text-decoration: none;
      margin-left: 1.6rem;
      font-weight: 500;
      font-size: 1rem;
      transition: color 0.25s ease;
    }

    nav a:hover {
      color: #66a6ff;
      text-decoration: underline;
    }

    main {
      padding: 2rem;
      max-width: 900px;
      margin: auto;
    }

    h1 {
      font-weight: 700;
      font-size: 2rem;
      margin-bottom: 1rem;
      border-bottom: 2px solid #2a3a62;
      padding-bottom: 0.3rem;
    }

    h2 {
      font-weight: 600;
      font-size: 1.4rem;
      margin-top: 2.5rem;
      margin-bottom: 0.8rem;
      color: #2a3a62;
    }

    p {
      margin-bottom: 1rem;
      font-size: 1rem;
      color: #5a6173;
    }

    ul {
      margin-left: 1.2rem;
      margin-bottom: 1rem;
      color: #4a4a5a;
    }

    a {
      color: #66a6ff;
      text-decoration: none;
    }

    a:hover {
      text-decoration: underline;
    }

    .link-list li {
      margin-bottom: 0.6rem;
    }

    .contact-info p {
      margin: 0.4rem 0;
    }

    footer {
      background-color: #ffffff;
      color: #2a2a3c;
      text-align: center;
      padding: 2.4rem 1rem;
      font-size: 0.95rem;
      box-shadow: inset 0 1px 0 rgba(102, 166, 255, 0.15);
      user-select: none;
    }

    @media (max-width: 600px) {
      nav a {
        margin-left: 12px;
        font-size: 14px;
      }

      .logo {
        font-size: 16px;
      }
    }

.spaced {
  margin-bottom: 3em !important;
}