* {
      box-sizing: border-box;
    }
    body {
      margin: 0;
      font-family: "Helvetica Neue", sans-serif;
      background-image: url("../assets/slides/slide2.jpg");
      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);
      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: 1.5rem;
      border-bottom: 2px solid #2a3a62;
      padding-bottom: 0.3rem;
    }

    .quick-links-text {
      margin: 2rem 0;
      padding: 1rem 1.5rem;
      background-color: #f4f8ff;
      border-left: 4px solid #457b9d;
      font-size: 1rem;
      line-height: 2;
    }
    
    .quick-links-title {
      margin: 0 0 0.5rem;
      font-size: 1.2rem;
      font-weight: 600;
      color: #2a3a62;
      margin-left: -10px; /* 让标题稍微往左挪 */
    }

    .quick-links-row {
      display: flex;
      flex-wrap: wrap;
      gap: 1.5rem;
      margin-bottom: 0.5rem;
    }

    .quick-links-row a {
      text-decoration: none;
      color: #1d4e89;
      font-weight: 500;
      transition: color 0.2s;
    }

    .quick-links-row a:hover {
      color: #ff6600;
    }

    p {
      font-size: 1rem;
      color: #5a6173;
      text-align: center;
      margin-top: 3rem;
    }

    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;
      }
    }