section {
   padding: 150px 0;
}
#dressing {
   width: 100%;
   height: 100%;
   min-height: 1408px;
}

#useTime {
   width: 100%;
   background-image: url('../images/bg_main_product.jpg');
   background-position: 50% 50%;
   background-size: cover;
   background-repeat: no-repeat;
   position: absolute;
   left: 0;
   top: 0;
   right: 0;
   bottom: 0;
   background-attachment: fixed;
}

/* 슬라이더 아이템 스타일 (디자인에 맞게 수정하세요) */
.specialist-slider .slide-item {
   background-color: var(--op-primary);
   opacity: 0.6;
   min-width: 440px;
   height: 500px;
   border-radius: 15px;
   display: flex;
   flex-direction: column;
   color: #fff;
   margin: 0 1.5rem 3rem;
}
.specialist-slider .slide-item:hover {
   opacity: 1;
}

/* 좌우 버튼 스타일 커스텀 */
.custom-controls .btn-control {
   width: 50px;
   height: 50px;
   border-radius: 50%;
   border: 1px solid #ddd;
   background-color: #fff;
   color: #00265d;
   transition: all 0.3s;
   display: flex;
   align-items: center;
   justify-content: center;
   padding: 0;
}
.custom-controls .btn-control i {
   text-align: center;
}

.custom-controls .btn-control:hover {
   background: #00265d;
   color: #fff;
   border-color: #00265d;
}

/* Research & Develope */
.btn_more {
   width: 172px;
   display: flex;
   justify-content: space-between;
   align-items: center;
   border: 1px solid #dee2e6;
   border-radius: 35px;
   padding: 1rem 1.5rem;
}
.btn_more span {
   font-size: 16px;
   color: #6c757d;
}
.btn_more i {
   color: #6c757d;
   font-size: 16px;
   font-weight: 700;
}
.btn_more:hover {
   width: 172px;
   display: flex;
   justify-content: space-between;
   align-items: center;
   border: 1px solid var(--op-primary);
   background-color: var(--op-primary);
   border-radius: 35px;
   padding: 1rem 1.5rem;
}
.btn_more:hover span {
   color: #fff;
}
.btn_more:hover i {
   color: #fff;
   font-size: 16px;
   font-weight: 700;
}
.mainCarouselWrap {
   border-radius: 25px 25px 25px 25px;
   border: 1px solid #dee2e6;
}
/* 큰 이미지 스타일 */
.carousel-item img {
   width: 100%;
   height: auto;
   object-fit: cover;
   border-radius: 25px 0 0 25px;
   border: 1px solid #dee2e6;
}

/* 썸네일 이미지 스타일 */
.thumb-div {
   cursor: pointer;
   width: 100%;
   height: 33.333333%;
   border-radius: 4px;
   display: flex;
   flex-direction: column;
   justify-content: center;
   padding-left: 3rem;
   border: 1px solid #dee2e6;
}
.thumb-div:nth-child(1) {
   border-radius: 0px 25px 0 0;
}
.thumb-div:nth-child(2) {
   border-radius: 0px 0px 0 0;
}
.thumb-div:nth-child(3) {
   border-radius: 0px 0 25px 0;
}

/* 마우스 오버 및 활성화 상태 */
.thumb-div:hover,
.thumb-div.active {
   background-color: var(--op-primary);
}
.thumb-div h2 {
   font-weight: 800;
   padding-left: 10px;
   font-size: 32px;
   color: #212529;
   margin-bottom: 0.5 rem;
}
.thumb-div p {
   font-size: 18px;
   color: #6c757d;
}
.thumb-div:hover h2,
.thumb-div.active h2 {
   font-weight: 900;
   padding-left: 10px;
   font-size: 32px;
   color: #fff;
   margin-bottom: 0.5 rem;
}
.thumb-div:hover p,
.thumb-div.active p {
   font-size: 18px;
   color: #fff;
}

#contactUs {
   width: 100%;
   height: 713px;
   background-image: url('../images/bg_main_contact.jpg');
   background-position: 50% 50%;
   background-size: cover;
   background-repeat: no-repeat;
   color: #fff;
}

#contactUs h1 {
   font-size: 96px;
   font-weight: 800;
}
#contactUs h2 {
   font-size: 40px;
}

.btn_contactus {
   width: 172px;
   display: flex;
   justify-content: space-between;
   align-items: center;
   border-radius: 35px;
   padding: 1rem 1.5rem;
   border: 1px solid #fff;
}
.btn_contactus span {
   font-size: 16px;
   color: #fff;
}
.btn_contactus i {
   color: #fff;
   font-size: 16px;
   font-weight: 700;
}
.btn_contactus:hover {
   width: 172px;
   display: flex;
   justify-content: space-between;
   align-items: center;
   background-color: rgb(0, 0, 0, 0.2);
   border-radius: 35px;
   padding: 1rem 1.5rem;
}
.btn_contactus:hover span {
   color: #fff;
}
.btn_contactus:hover i {
   color: #fff;
   font-size: 16px;
   font-weight: 700;
}

@media (max-width: 1400px) {
   #dressing {
      width: 100%;
      height: 100%;
      min-height: 1800px;
   }
}
@media (max-width: 1200px) {
   .mainCarouselWrap {
      border-radius: 25px 25px 25px 25px;
      border: none;
   }
   /* 큰 이미지 스타일 */
   .carousel-item img {
      border-radius: 25px;
   }

   /* 썸네일 이미지 스타일 */
   .thumb-div {
      height: 33.333333%;
      border-radius: 25px;
      padding: 1rem;
      border: 1px solid #dee2e6;
   }
   .thumb-div:nth-child(1) {
      border-radius: 25px 25px 0px 0px;
   }
   .thumb-div:nth-child(2) {
      border-radius: 0;
   }
   .thumb-div:nth-child(3) {
      border-radius: 0px 0px 25px 25px;
   }
}
@media (max-width: 576px) {
   section {
      padding: 50px 0;
   }
   .specialist-slider .slide-item {
      min-width: auto !important;
      width: 100% !important;
      margin: 0 0 1.5rem 0 !important;
      height: auto;
   }

   .specialist-slider .slide-item .p-5 {
      padding: 1.5rem !important;
   }
   #contactUs h1 {
      font-size: 60px;
   }
   #contactUs h2 {
      font-size: 25px;
   }
   #contactUs h2 br {
      display: none;
   }
   #dressing {
      min-height: 1470px;
   }
   .mfs-28 {
      font-size: 28px !important;
   }
   .mfs-38 {
      font-size: 38px !important;
   }
   .mfs-40 {
      font-size: 40px !important;
   }
   .btn_more,
   .btn_contactus {
      padding: 0.5rem 1.5rem;
   }

}