<style>
  #nsd-nav * { box-sizing: border-box; margin: 0; padding: 0; }

  #nsd-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 2147483647;
    height: 60px;
    background: #ffffff;
    border-bottom: 1px solid rgba(55, 53, 47, 0.35);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Apple SD Gothic Neo', sans-serif;
  }

  /* 로고 */
  #nsd-nav .nav-logo img {
    height: 50px;
    display: block;
  }

  /* 데스크탑 메뉴 */
  #nsd-nav .nav-menu {
    display: flex;
    align-items: center;
    gap: 6px;
  }

  #nsd-nav .nav-item {
    position: relative;
  }

  #nsd-nav .nav-link {
    display: flex;
    align-items: center;
    gap: 3px;
    padding: 7px 14px;
    font-size: 16px;
    font-weight: 550;
    color: #1a1915;
    text-decoration: none;
    border-radius: 8px;
    transition: background 0.15s, color 0.15s;
    white-space: nowrap;
    cursor: pointer;
  }

  #nsd-nav .nav-link:hover {
    background: rgba(55, 53, 47, 0.06);
    color: #000;
  }

  #nsd-nav .ext-icon {
    font-size: 10px;
    opacity: 0.45;
    margin-left: 1px;
  }

  /* 문의하기 버튼 */
  #nsd-nav .nav-cta {
    padding: 6px 12px;
    font-size: 13px;
    font-weight: 700;
    color: #fff;
    background: #37352f;
    border-radius: 8px;
    text-decoration: none;
    transition: background 0.15s;
    white-space: nowrap;
    margin-left: 6px;
  }

  #nsd-nav .nav-cta:hover {
    background: #1a1915;
  }

  /* 드롭다운 */
  #nsd-nav .nav-item:hover .dropdown {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  #nsd-nav .dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    background: #fff;
    border: 1px solid rgba(55, 53, 47, 0.1);
    border-radius: 12px;
    padding: 6px;
    min-width: 180px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-6px);
    transition: opacity 0.18s, transform 0.18s;
  }

  #nsd-nav .dropdown::before {
    content: '';
    position: absolute;
    top: -12px;
    left: 0;
    right: 0;
    height: 12px;
  }

  #nsd-nav .dropdown a {
    display: block;
    padding: 9px 14px;
    font-size: 13.5px;
    font-weight: 450;
    color: #37352f;
    text-decoration: none;
    border-radius: 8px;
    transition: background 0.12s;
    white-space: nowrap;
  }

  #nsd-nav .dropdown a:hover {
    background: rgba(55, 53, 47, 0.06);
  }

  .nsd-divider {
    height: 1px;
    background: rgba(55, 53, 47, 0.08);
    margin: 4px 6px;
  }

  /* 햄버거 버튼 */
  #nsd-nav .hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 4px;
    border-radius: 8px;
    transition: background 0.15s;
  }

  #nsd-nav .hamburger:hover {
    background: rgba(55, 53, 47, 0.06);
  }

  #nsd-nav .hamburger span {
    display: block;
    height: 2px;
    background: #37352f;
    border-radius: 2px;
    transition: transform 0.25s, opacity 0.25s;
  }

  #nsd-nav.mobile-open .hamburger span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  #nsd-nav.mobile-open .hamburger span:nth-child(2) {
    opacity: 0;
  }
  #nsd-nav.mobile-open .hamburger span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  /* 모바일 드로어 */
  #nsd-mobile-drawer {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: #ffffff;
    border-bottom: 1px solid rgba(55, 53, 47, 0.08);
    z-index: 2147483646;
    padding: 12px 20px 20px;
    flex-direction: column;
    gap: 2px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.06);
  }

  #nsd-mobile-drawer.open {
    display: flex;
  }

  #nsd-mobile-drawer a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 13px 12px;
    font-size: 15px;
    font-weight: 500;
    color: #37352f;
    text-decoration: none;
    border-radius: 8px;
    transition: background 0.12s;
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Apple SD Gothic Neo', sans-serif;
  }

  #nsd-mobile-drawer a:hover {
    background: rgba(55, 53, 47, 0.05);
  }

  #nsd-mobile-drawer .mobile-sub {
    padding-left: 24px;
    font-size: 14px;
    color: #6b6a65;
    font-weight: 400;
  }

  #nsd-mobile-drawer .mobile-cta {
    margin-top: 8px;
    padding: 14px 12px;
    font-size: 15px;
    font-weight: 600;
    color: #fff !important;
    background: #37352f;
    border-radius: 10px;
    text-align: center;
    justify-content: center;
  }

  #nsd-mobile-drawer .mobile-divider {
    height: 1px;
    background: rgba(55, 53, 47, 0.07);
    margin: 4px 0;
  }

  /* 반응형 */
  @media (max-width: 768px) {
    #nsd-nav {
      padding: 0 20px;
    }
    #nsd-nav .nav-menu {
      display: none;
    }
    #nsd-nav .hamburger {
      display: flex;
    }
  }
</style>


<nav id="nsd-nav">
  <a class="nav-logo" href="https://www.nsdlab.kr">
    <img
      src="https://i.ibb.co/LX5hHdxK/nsdlab-logo.png"
      alt="NSD Lab"
    >
  </a>

  
  <div class="nav-menu">
    
    <div class="nav-item">
      <a class="nav-link" href="https://www.nsdlab.kr">NSD Lab 소개</a>
    </div>

    <div class="nav-item">
      <a class="nav-link" href="https://www.nsdlab.kr/ops_system">운영 시스템</a>
    </div>

    <div class="nav-item">
      <a class="nav-link" href="http://nsdlab.imweb.me/" target="_blank" rel="noopener">
        시스템 스토어 <span class="ext-icon">↗</span>
      </a>
    </div>

    <div class="nav-item">
      <a class="nav-link" href="#">제작 서비스</a>
      <div class="dropdown">
        <a href="https://www.nsdlab.kr/businessweb">비즈니스 웹사이트</a>
        <div class="nsd-divider"></div>
        <a href="https://www.nsdlab.kr/serviceintro">서비스·제품 소개 페이지</a>
      </div>
    </div>

    <div class="nav-item">
      <a class="nav-link" href="https://www.nsdlab.kr/blog">도입 사례</a>
    </div>

    <a class="nav-cta" href="https://pf.kakao.com/_anlqX" target="_blank" rel="noopener">문의하기</a>
  </div>

  
  <button class="hamburger" id="nsd-hamburger" aria-label="메뉴 열기">
    <span></span>
    <span></span>
    <span></span>
  </button>
</nav>


<div id="nsd-mobile-drawer">
  
  <a href="https://www.nsdlab.kr">NSD Lab 소개</a>
  <div class="mobile-divider"></div>

  <a href="https://www.nsdlab.kr/ops_system">운영 시스템</a>
  <div class="mobile-divider"></div>
  <a href="http://nsdlab.imweb.me/" target="_blank" rel="noopener">
    시스템 스토어 <span style="opacity:0.4; font-size:12px;">↗</span>
  </a>
  <div class="mobile-divider"></div>
  <a href="#">제작 서비스</a>
  <a class="mobile-sub" href="https://www.nsdlab.kr/businessweb">· 비즈니스 웹사이트</a>
  <a class="mobile-sub" href="https://www.nsdlab.kr/serviceintro">· 서비스·제품 소개 페이지</a>
  <div class="mobile-divider"></div>
  <a href="https://www.nsdlab.kr/blog">도입 사례</a>
  <div class="mobile-divider"></div>
  <a class="mobile-cta" href="https://pf.kakao.com/_anlqX" target="_blank" rel="noopener">문의하기</a>
</div>


<div style="height: 60px;"></div>

<script>
  (function() {
    var nav = document.getElementById('nsd-nav');
    var btn = document.getElementById('nsd-hamburger');
    var drawer = document.getElementById('nsd-mobile-drawer');

    btn.addEventListener('click', function() {
      var isOpen = drawer.classList.contains('open');
      if (isOpen) {
        drawer.classList.remove('open');
        nav.classList.remove('mobile-open');
      } else {
        drawer.classList.add('open');
        nav.classList.add('mobile-open');
      }
    });

    drawer.querySelectorAll('a').forEach(function(link) {
      link.addEventListener('click', function() {
        drawer.classList.remove('open');
        nav.classList.remove('mobile-open');
      });
    });
  })();
</script>

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