<style>
  body {
    font-family: 'Noto Sans KR', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
  }

header {
  background-color: #003366;
  color: white;
  padding: 1rem;
  position: fixed;       /* 화면에 고정 */
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;         /* 다른 요소보다 위에 */
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2); /* 살짝 그림자 */
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-right: 2rem; /* ✅ 우측 여백 확보 */
}

  .logo {
    font-size: 1.5rem;
    font-weight: bold;
  }

  .menu-btn {
    display: block;
    font-size: 1.6rem;
    background: none;
    border: none;
    color: white;
    cursor: pointer;
  }

  .menu-list {
    display: none;
    flex-direction: column;
    background-color: #003366;
    position: absolute;
    top: 60px;
    right: 1rem;
    border-radius: 0.5rem;
    overflow: hidden;
    z-index: 10;
  }

  .menu-list a {
    color: white;
    padding: 0.75rem 1rem;
    text-decoration: none;
    transition: all 0.3s ease;
  }

  .menu-list a:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: #00c3ff;
  }

  .menu-list a.active {
    color: #00c3ff;
    font-weight: bold;
  }

  .menu-list.show {
    display: flex;
  }

.menu-list a.active {
  color: #00c3ff;
  font-weight: bold;
  border-bottom: 2px solid #00c3ff;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  padding: 0.5rem 0.8rem;
}

  .card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 6px 6px 0 0;
    margin-bottom: 1rem;
  }

  .card-container {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: center;
  }

  .card {
    background: white;
    border-radius: 8px;
    padding: 1rem;
    max-width: 300px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s;
  }

  .card:hover {
    transform: translateY(-5px);
  }

  .quick-menu {
    position: fixed;
    top: 50%;
    right: 0;
    transform: translateY(-50%);
    background-color: rgba(0, 51, 102, 0.3);
    padding: 0.5rem;
    border-radius: 8px 0 0 8px;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    z-index: 1000;
    transition: background-color 0.3s ease;
  }

  .quick-menu:hover {
    background-color: rgba(0, 51, 102, 0.9);
  }

  .quick-menu a {
    color: white;
    text-decoration: none;
    padding: 0.6rem 0.8rem;
    font-size: 0.9rem;
    background-color: transparent;
    border-radius: 4px 0 0 4px;
    transition: background-color 0.3s, color 0.3s;
    text-align: center;
  }

  .quick-menu a:hover {
    background-color: rgba(255, 255, 255, 0.2);
    color: #fff;
  }

  .video-background {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    margin-top: 4rem;
    height: 350px;
    color: white;
  }

  .background-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.4);
    z-index: 0;
  }

  .video-overlay {
    position: relative;
    z-index: 1;
    padding: 2rem;
    backdrop-filter: blur(4px);
    background-color: rgba(0, 0, 0, 0.3);
    height: 100%;
    box-sizing: border-box;
  }

  .video-overlay h2 {
    margin-top: 0;
    font-size: 1.5rem;
    color: #ffffff;
  }

  .video-overlay ul {
    list-style: disc;
    padding-left: 1.5rem;
  }

  .video-overlay li {
    margin-bottom: 0.5rem;
    color: #f0f0f0;
  }

  @media (min-width: 768px) {
    .menu-btn {
      display: none;
    }

    .menu-list {
      display: flex !important;
      position: static;
      background: none;
      flex-direction: row;
      gap: 1rem;
      margin-left: auto;
    }

    .menu-list a {
      padding: 0.5rem 0.8rem;
    }

    .menu-list a:hover {
      background-color: rgba(255, 255, 255, 0.15);
      border-radius: 4px;
      transform: translateY(-2px);
    }
  }

main {
  padding: 2rem;
  padding-top: 100px; /* 헤더 높이만큼 위 공간 확보 */
  max-width: 1200px;
  margin: auto;
}

  .faq-section {
    margin-top: 4rem;
    background: #fff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  }

  .faq-item {
    margin-bottom: 1rem;
  }

  .faq-item button {
    background: #6a89cc;
    color: white;
    border: none;
    width: 100%;
    text-align: left;
    padding: 0.8rem;
    font-size: 1rem;
    cursor: pointer;
    border-radius: 4px;
  }

  .faq-answer {
    display: none;
    background: #eef3fb; /* 변경된 부드러운 색상 */
    padding: 1rem;
    margin-top: 0.5rem;
    border-radius: 4px;
  }

  .tech-note {
    margin-top: 3rem;
    background: #e6f0ff;
    padding: 1.5rem;
    border-left: 6px solid #003366;
  }

  .tech-note h3 {
    margin-top: 0;
  }
</style>