* {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Microsoft YaHei", sans-serif;
      color: #1f2937;
      background: linear-gradient(135deg, #f8fafc 0%, #eef2ff 100%);
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }

    header {
      padding: 24px 8%;
      background-color: #ffffffcc;
      backdrop-filter: blur(12px);
      border-bottom: 1px solid #e5e7eb;
    }

    .site-title {
      margin: 0;
      font-size: 22px;
      font-weight: 700;
      color: #111827;
    }

    main {
      flex: 1;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 48px 8%;
    }

    .hero {
      width: 100%;
      max-width: 900px;
      text-align: center;
    }

    h1 {
      margin: 0;
      font-size: clamp(40px, 8vw, 76px);
      line-height: 1.1;
      color: #111827;
    }

    .subtitle {
      margin: 24px auto 0;
      max-width: 680px;
      font-size: 18px;
      line-height: 1.8;
      color: #4b5563;
    }

    .actions {
      margin-top: 36px;
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
    }

    .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-width: 180px;
      padding: 14px 24px;
      border-radius: 999px;
      text-decoration: none;
      font-size: 16px;
      font-weight: 700;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .button-primary {
      color: #fff;
      background: linear-gradient(135deg, #347ae8 0%, #1557c0 100%);
      box-shadow: 0 10px 24px rgba(52, 122, 232, 0.28);
    }

    .button:hover {
      transform: translateY(-3px);
      box-shadow: 0 14px 30px rgba(52, 122, 232, 0.36);
    }

    footer {
      padding: 24px 8%;
      text-align: center;
      color: #6b7280;
      font-size: 14px;
    }

    footer .beian {
      margin-top: 8px;
      line-height: 1.8;
    }

    footer a {
      color: #6b7280;
      text-decoration: none;
    }

    footer a:hover {
      color: #1557c0;
      text-decoration: underline;
    }

    @media (max-width: 780px) {
      header {
        padding: 20px 6%;
      }

      main {
        padding: 40px 6%;
      }

      .subtitle {
        font-size: 16px;
      }

      .button {
        width: 100%;
        max-width: 320px;
      }

      footer {
        padding: 20px 6%;
        font-size: 13px;
      }

      footer .beian span {
        display: none;
      }

      footer .beian a {
        display: block;
      }
    }