@font-face {
  font-family: 'NanumSquareNeoBold';
  src: url(https://hangeul.pstatic.net/hangeul_static/webfont/NanumSquareNeo/NanumSquareNeoTTF-cBd.eot);
  src: url(https://hangeul.pstatic.net/hangeul_static/webfont/NanumSquareNeo/NanumSquareNeoTTF-cBd.eot?#iefix) format("embedded-opentype"), url(https://hangeul.pstatic.net/hangeul_static/webfont/NanumSquareNeo/NanumSquareNeoTTF-cBd.woff) format("woff"), url(https://hangeul.pstatic.net/hangeul_static/webfont/NanumSquareNeo/NanumSquareNeoTTF-cBd.ttf) format("truetype");
}

@font-face {
  font-family: 'Pretendard-Regular';
  src: url('https://fastly.jsdelivr.net/gh/Project-Noonnu/noonfonts_2107@1.1/Pretendard-Regular.woff') format('woff');
  font-weight: 300;
  font-style: normal;
}

@font-face {
  font-family: 'Pretendard-Medium';
  src: url('https://fastly.jsdelivr.net/gh/Project-Noonnu/noonfonts_2107@1.1/Pretendard-Medium.woff') format('woff');
  font-weight: 400;
  font-style: normal;
}

@font-face {
  font-family: 'Pretendard-Light';
  src: url('https://fastly.jsdelivr.net/gh/Project-Noonnu/noonfonts_2107@1.1/Pretendard-Light.woff') format('woff');
  font-weight: 500;
  font-style: normal;
}

@font-face {
  font-family: 'Pretendard-ExtraLight';
  src: url('https://fastly.jsdelivr.net/gh/Project-Noonnu/noonfonts_2107@1.1/Pretendard-ExtraLight.woff') format('woff');
  font-weight: 600;
  font-style: normal;
}

@font-face {
  font-family: 'Pretendard-Bold';
  src: url('https://fastly.jsdelivr.net/gh/Project-Noonnu/noonfonts_2107@1.1/Pretendard-Bold.woff') format('woff');
  font-weight: 700;
  font-style: normal;
}

@font-face {
  font-family: 'Pretendard-ExtraBold';
  src: url('https://fastly.jsdelivr.net/gh/Project-Noonnu/noonfonts_2107@1.1/Pretendard-ExtraBold.woff') format('woff');
  font-weight: 800;
  font-style: normal;
}
 
 @keyframes fadeIn {
    from {
      opacity: 0;
      transform: translateY(10px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  .animate-fadeIn {
    animation: fadeIn 0.5s ease-out;
  }

  .custom-popup {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: white;
    padding: 1.5rem;
    border-radius: 1rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    min-width: 280px;
    max-width: 90vw;
    box-sizing: border-box;
  }
  .custom-popup-bg {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.3);
    z-index: 999;
  }

  @media (max-width: 640px) {
    section {
      padding: 1.5rem 1rem;
    }
    h2 {
      font-size: 1.75rem;
    }
    input#serialInput {
      font-size: 1rem;
      padding: 0.75rem 1.25rem;
    }
    button[aria-label="보증서번호 조회하기"] {
      font-size: 1.125rem;
      padding: 1rem 0;
    }
  }

   footer {
  background-color: #f5f5f5;
  color: #333;
  padding: 40px 20px 20px;
}

    .footer-container {
      max-width: 800px;
      margin: auto;
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .footer-top {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .company-info {
      font-size: 14px;
      line-height: 1.6;
    }

    .legal-dropdown {
      background: #e0e0e0;
      border-radius: 10px;
      padding: 12px 16px;
      cursor: pointer;
      user-select: none;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 15px;
      color: #333;
      transition: background 0.3s;
    }

    .legal-dropdown:hover {
      background: #e7e7e7;
    }

    .legal-content {
      display: none;
      font-size: 14px;
      margin-top: 8px;
      padding: 15px 20px;
      background-color: #d6d6d6;
      border-radius: 10px;
      color: #333;
      line-height: 1.6;
      text-decoration: none;
    }

    .legal-content a {
      display: block;
      color: #333;
      text-decoration: none;
      margin-bottom: 8px;
      transition: color 0.2s;
    }

    .legal-content a:hover {
      color: #3f3f3f;
    }

    .footer-bottom {
      text-align: center;
      font-size: 13px;
      margin-top: 30px;
      color: #888;
    }

    @media (min-width: 768px) {
      .footer-top {
        flex-direction: row;
        justify-content: space-between;
        align-items: flex-start;
      }

      .company-info {
        flex: 1;
      }
    }