main {
    max-width: 800px;
    margin: 0 auto;
    padding: 80px 16px 32px 16px;
  }
  
  .hero {
    text-align: center;
    margin-bottom: 32px;
  }
  .hero h1 {
    font-size: 2.2rem;
    margin-bottom: 12px;
    color: #2a7cff;
  }
  .hero p {
    font-size: 1.1rem;
    color: #555;
  }
  
  .tools {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    margin-bottom: 40px;
  }
  
  /* .tool을 링크(a)로 사용하므로 접근성/스타일 추가 */
  .tool {
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    padding: 24px 32px;
    font-size: 1.1rem;
    font-weight: 500;
    color: #2a7cff;
    cursor: pointer;
    transition: box-shadow 0.2s, transform 0.2s;
    text-decoration: none;
    display: inline-block;
  }
  .tool:hover {
    box-shadow: 0 4px 16px rgba(42,124,255,0.10);
    transform: translateY(-2px) scale(1.03);
  }
  
  .popular {
    margin-bottom: 32px;
  }
  /* 인기 도구 섹션 임시 숨김 */
  .popular {
    display: none !important;
  }
  
  .popular h2 {
    font-size: 1.2rem;
    color: #333;
    margin-bottom: 16px;
  }
  .popular-list {
    display: flex;
    gap: 16px;
    justify-content: center;
  }
  .popular-tool {
    background: #e6f0ff;
    color: #2a7cff;
    border-radius: 8px;
    padding: 16px 24px;
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.2s;
  }
  .popular-tool:hover {
    background: #d0e4ff;
  }
  
  .footer-nav {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-top: 40px;
  }
  .footer-nav a {
    color: #888;
    text-decoration: none;
    font-size: 1rem;
    transition: color 0.2s;
  }
  .footer-nav a:hover {
    color: #2a7cff;
  }
  
  @media (max-width: 600px) {
    .logo {font-size: 22px;}
    header {
      flex-direction: initial;
      align-items: flex-start;
      padding: 16px 24px;
    }
    main {
      padding: 35px 4px;
      max-width: 90%;
    }
    .tools, .popular-list {
      flex-direction: column;
      gap: 12px;
      align-items: stretch;
    }
    .tool, .popular-tool {
      width: auto;
      text-align: center;
    }
  }