*,
*::before,
*::after {
  box-sizing: border-box;
}

/* 2. 기본 margin, padding 제거 */
body, h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd {
  margin: 0;
  padding: 0;
}

body {
  margin: 0; overflow-x: hidden;
  font-family: 'Pretendard', sans-serif;
}

/* .main-header {
  position: fixed;
  top: 0;
  width: 100%;
  height: 64px;
  background: rgba(0, 0, 0, 0.2); 
  backdrop-filter: blur(10px);    
  -webkit-backdrop-filter: blur(10px); 
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 60px;
  z-index: 1000;
} */
.main-header {
  position: fixed;
  top: 0;
  width: 100%;
  height: 100px;
 background: rgba(0, 0, 0, 0.2); /* 반투명 */
  backdrop-filter: blur(10px);     /* 블러 효과 */
  -webkit-backdrop-filter: blur(10px); /* 사파리용 */
  z-index: 1000;
}

body.white-header .main-header {
  position: fixed;
  top: 0;
  width: 100%;
  height: 100px;
 background: rgba(0, 0, 0, 1); /* 반투명 */
  backdrop-filter: blur(10px);     /* 블러 효과 */
  -webkit-backdrop-filter: blur(10px); /* 사파리용 */
  z-index: 1000;
}

.header-inner {
  max-width: 1400px;
  height: 100%;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo img {
  height: 40px;
}

/* .main-nav ul {
  display: flex;
  align-items: center;
  gap: 40px;
  list-style: none;
  margin: 0;
  padding: 0;
}
 */
.main-nav > ul {
   display: flex;
  align-items: center;
  gap: 40px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.main-nav ul li {
  position: relative;
}

.main-nav ul li a {
  color: #fff;
  text-decoration: none;
  font-size: 17px;
  font-weight: 500;
  transition: color 0.3s;
}

/* 밝은 페이지용 오버라이드 */
body.white-header .main-nav ul li a {
  color: #fff;
}

.main-nav ul li a:hover {
  color: #76b900;
}

.main-nav ul.dropdown-menu {
  display: block; /* flex 말고 block으로 세로 정렬 */
  padding: 10px 0; list-style: none;
  margin: 0;
}

.main-nav ul.dropdown-menu li {
  padding: 6px 0; /* 원하는 간격 조절 */
}

/* 드롭다운 메뉴 */
.dropdown-menu {
  display: none;
  flex-direction: column;
  position: absolute;
  top: 100%;
  left: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  min-width: 220px;
  padding: 10px 0;
  border-radius: 0px;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.dropdown:hover .dropdown-menu {
  display: flex;
  opacity: 1;
  visibility: visible;
}

.dropdown-menu li {
  width: 100%;
}

.dropdown-menu li a {
  padding: 10px 20px;
  display: block;
  font-size: 14px;
  color: #fff;
}

.dropdown-menu li a:hover {
  background: rgba(255, 255, 255, 0.1);
}


.slide-container {
  position: relative;
  overflow: hidden;
}


.slide-wrapper {
  display: flex;
  height: 100vh;
  transition: transform 0.6s ease;
}

.slide {
  width: 100vw;
  height: 100vh;
  flex-shrink: 0;
}

.slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}


.slide.bg1 {
      background-image: url('../images/01_header.mp4');
      background-size: cover;
      background-position: center;
    }
    .slide.bg2 {
      background-image: url('../images/02_header.jpg');
      background-size: cover;
      background-position: center;
    }
    .slide.bg3 {
      background-image: url('../images/03_header.jpg');
      background-size: cover;
      background-position: center;
    }
	.slide.bg4 {
      background-image: url('../images/04_header.jpg');
      background-size: cover;
      background-position: center;
    }
	.slide.bg5 {
      background-image: url('../images/05_header.mp4');
      background-size: cover;
      background-position: center;
    }


.slide.bg1 {
  position: relative;
  overflow: hidden; /* 비디오 튀어나가는 것 방지 */
}


.slide.bg1 .bg-video {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  transform: translate(-50%, -50%);
  object-fit: cover;
  z-index: 1;
}

.slide.bg5 {
  position: relative;
  overflow: hidden; /* 비디오 튀어나가는 것 방지 */
}


.slide.bg5 .bg-video {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  transform: translate(-50%, -50%);
  object-fit: cover;
  z-index: 1;
}

.main4_logo {width:auto !important; }
.main5_logo {width:auto !important; }

/* 슬라이드 안 텍스트 (공통) */
.slide-content {
  position: relative;
  top: 30%;
  left: 110px;
  color: white;
  z-index: 10; /* 비디오 위에 올라가야 하니까 */
  max-width: 1400px;
}

    .slide-content h2 { display: flex;
    align-items: center;
      font-size: 2.3em;
      font-weight: 400;
      margin-bottom: 10px;
    }
    .slide-content h1 {
      font-size: 3em;
      font-weight: 700;
      margin-bottom: 40px;
    }
    .slide-content p {
      font-size: 1.3em;
      font-weight: 300;
      line-height: 1.6;
    }
    .custom-indicator {
      position: absolute;
      bottom: 270px;
      left: 110px;
      display: flex; align-items: center;
      gap: 10px;
      z-index: 11; cursor: pointer;
    }
    .scroll-indicator {
      position: absolute;
      bottom: 30px;
      left: 50%;
      transform: translateX(-50%);
      z-index: 10;
      pointer-events: none;
    }
    .scroll-indicator img {
      display: block;
      max-width: 100%;
    }
    .fixed-icons {
      position: fixed;
      bottom: 30px;
      right: 30px;
      display: flex;
      flex-direction: column;
      gap: 20px;
      z-index: 999;
    }
    .fixed-icons button,
    .fixed-icons a {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: rgba(0, 0, 0, 0.5);
      display: flex;
      align-items: center;
      justify-content: center;
      text-decoration: none;
      color: #fff;
      font-size: 22px;
      border: none;
      cursor: pointer;
    }

.indicator-dot {
  width: 80px;
  height: 6px;
  background: rgba(255, 255, 255, 0.3);
  position: relative;
  overflow: hidden;
}
.pointer {cursor:pointer;}

.indicator-dot .progress-bar {
    position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  background: limegreen;
  transform: scaleX(0);
  transform-origin: left;
  transition: none;
}

/* .indicator-dot.active {
  background: limegreen;
} */

 .pause-btn {
     
      border-radius: 50%;
      background: rgba(0, 0, 0, 0.2);
      border: none;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 0;
    }
    .pause-btn img {
      width: 24px;
      height: 24px;
    }

  .go-top-btn {
    position: fixed;
    bottom: 30px;
    left: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5em;
    border: none;
    cursor: pointer;
    color: #fff;
    z-index: 999;
    transition: all 0.3s ease-in-out;

    backdrop-filter: blur(20px);
    filter: brightness(1.1) contrast(1.6);
  }

.go-top-btn:hover {
    background: rgba(255, 255, 255, 0.5);
    color: rgba(0, 0, 0, 0.7);
}
    .inquiry-btn {
      position: fixed;
      bottom: 30px;
      right: 30px;
      width: 115px;
      height: 115px;
      border-radius: 50%;
      background: rgba(0, 0, 0, 0.3);
      display: flex;
      align-items: center;
      justify-content: center; 
      font-size: 16px;
      color: #fff;
      text-decoration: none;  z-index: 999; transition: all 0.3s ease-in-out;
      z-index: 999; 
    backdrop-filter: blur(20px);
    filter: brightness(1.1) contrast(1.6);
    }

	.inquiry-btn:hover {
    background: rgba(255, 255, 255, 0.5);
    color: rgba(0, 0, 0, 0.7);
}


.business-area {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 100px 60px;
  background: #111; /* 비디오 로딩 안될 경우 대비 */
  color: #fff;
  text-align: center;
  z-index: 1; 
}

.business-area .bg-video {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  transform: translate(-50%, -50%);
  object-fit: cover;
  z-index: 0;
  opacity: 0.6;
  filter: blur(20px); /* ← 흐림 효과 추가 */
}

.business-area .section-title,
.business-area .business-grid {
  position: relative;
  z-index: 2;
}
  .section-title {
    font-size: 2.6em;
    font-weight: 600;
    margin-bottom: 40px;
  }
  .business-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 24px;     margin-top: 40px;
  }
  .business-card {
    background: #1c1c1c;
    width: 414px;
    border-radius: 0px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
    transition: transform 0.3s ease;
    position: relative;
  }
  .business-card:hover {
    transform: translateY(-6px);
  }
  .business-card img {
    width: 100%;
    height: auto;
    display: block;
  }
  .business-card .label {
    display: flex;
    justify-content: start;
    align-items: center;
    background: #000A1799;
    padding: 30px 20px;
  }
  .business-card .label span {
    font-size: 1.4em;
    font-weight: 300;
  }
  .icon-overlay {
    position: absolute;
        bottom: 3.0em;
    right: 20px;
    background: rgba(0, 0, 0, 0.6);
    border-radius: 50%;
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
     backdrop-filter: blur(20px);
    filter: brightness(1.1) contrast(1.6);
  }
  .icon-overlay img {
    width: 42px;
    height: 42px;
  }


   .why-area {
    background: url('../images/why_back.jpg') no-repeat center center/cover;
    display: flex;
    flex-direction: column;
    justify-content: center;
    text-align:center;
    min-height: 100vh;
    padding: 100px 60px;
    color: #fff;
  }
  .why-grid {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 24px;
    margin-top: 40px;
  }
  .why-card {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 0px;
  width: 414px;
  padding: 30px 20px;
  box-sizing: border-box; /* 추가 */
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 60px;
  backdrop-filter: blur(20px);
  filter: brightness(1.1) contrast(1.6);
}
  .why-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
  }
  .why-number {
    font-size: 1.5em;
    font-weight: bold;
    position: relative;
  }
  .why-number::after {
    content: "";
    display: block;
    width: 30px;
    height: 2px;
    background: white;
    margin-top: 8px;
  }
  .why-header img {
    
    height: 79px;
  }
  .why-card p {
    font-size: 1.4em; font-weight:300;
    line-height: 1.5;
    margin-top: 20px;
        text-align: left;
    width: 100%;
  }


  .project-area {
    background: url('../images/project_back.jpg') no-repeat center center/cover;
    display: flex;
    flex-direction: column;
    justify-content: center;
    text-align:center;
    min-height: 100vh;
    padding: 100px 60px;
    color: #fff;
   
  }
  .project-grid {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 24px;
    margin-top: 40px;
  }
  .project-card {
    position: relative;
    width: 500px;
    height: 700px;
    background-size: cover;
    background-position: center;
    border-radius: 0px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
  }
  .project-content {
    background: rgba(0,0,0,0.5);
   /*  backdrop-filter: blur(4px); */
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    padding: 30px 20px;
  }
  .project-top {
    width: 100%;
    display: flex; 
    justify-content: center; padding:110px 0px 30px;
  }
  .project-middle {
    margin-top: 0px;
  }
  .project-bottom {
    margin-top: auto; padding:0px 0px 110px;
  }
  .project-tag {
    font-size:1.2em;
    font-weight: 300;
    padding: 6px 12px;
    border-radius: 0px;
  }
  .project-tag.green { background: #228B22; }
  .project-tag.blue { background: #0077cc; }
  .project-tag.teal { background: #008080; }
  .project-content h3 {
    font-size: 1.8em;
    font-weight: 400;
    line-height: 1.4;
  }
  .project-content p {
    font-size: 1em;
    line-height: 1.6;
    margin-top: 20px; font-weight: 300;
  }

 .product-area {
    background: #fff;
    padding: 100px 60px;
    color: #fff;
    text-align: center;
  }
  .product-grid {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 24px;
    margin-top: 40px;
  }
  .product-card {
    background-size: cover;
    background-position: center;
    width: 500px;
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    border-radius: 0px;
  }
  .card-b200 {
    background-image: url('../images/01_NVIDIADGXB200.jpg');
  }
  .card-h200 {
    background-image: url('../images/02_NVIDIA DGXH200.jpg');
  }
  .card-superpod {
    background-image: url('../images/03_NVIDIADGXSuperPOD.jpg');
  }
  .product-content {
    box-sizing: border-box;
    width: 100%;
    height: 100%;
    padding: 30px 20px 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: flex-start;
  }
  .product-text {
    width: 100%;
  }
  .product-content h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 10px;
    text-align: left; padding-top:0px;
  }
  .product-content hr {
    width: 100%;
    border: 1px solid rgba(255,255,255,0.5);
    margin-bottom: 10px;
  }
  .product-content p {
    font-size: 18px;
    line-height: 1.5;
    margin-bottom: 20px;
    text-align: left;
  }
  .product-image {
    flex-grow: 1;
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
    width: 100%;
  }
  .product-btn {
    background: #FFFFFF3D 0% 0% no-repeat padding-box;
    border: 1px solid #fff;
    color: #fff;
    padding: 10px 20px;
    border-radius: 0px;
    cursor: pointer;
    font-size: 14px;
    margin-top: 20px;
    transition: all 0.3s ease;
    align-self: flex-start;
  }
  .product-btn:hover {
    background: #fff;
    color: #000;
  }

  .aiinfra-area {
    background: url('../images/nvidia-ai-back.jpg') no-repeat center center/cover;
    padding: 100px 40px;
    color: #fff;
    text-align: center;
  }
  .aiinfra-area .section-desc {     font-size: 1.2em;
    margin-top: 10px;
    line-height: 1.6;
  }
  .aiinfra-grid {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 60px;
    flex-wrap: wrap;
  }
  .aiinfra-box {
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.2);
    backdrop-filter: blur(10px);
    padding: 30px;
    width: 670px;
    border-radius: 0px;
  }
  .aiinfra-box h3 {
    margin-bottom: 20px;
    font-size: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.5);
    padding-bottom: 10px;
  }
  .aiinfra-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 20px;
  }
  .aiinfra-list div {
    text-align: center;
  }
  .aiinfra-list img {
    width: 170px;
    height: auto;
  }
  .aiinfra-list p {
    margin-top: 10px;
    font-size: 14px;
  }

  
  .aiinfra-box:nth-child(2) .aiinfra-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 20px;     padding: 0px 80px;
}


.footer {
  background: #2d2d2d;
  color: #ccc;
  padding: 60px 20px;
  font-size: 14px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1300px;
  margin: 0 auto;
  flex-wrap: wrap;
}
.footer-left img {
  width: 150px;
}
.footer-right {
  text-align: right;
}
.footer-right p {
  margin: 5px 0;
  font-size: 13px;
  line-height: 1.5;
}
@media (max-width: 768px) {
  .footer-inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .footer-right {
    text-align: center;
    margin-top: 20px;
  }
}