.f-main-color {
  color: #454545;
}
main {
  margin-top: 100px;
}
.main_visual {
  position: relative;
  z-index: 0;
}

.main_sect1_content_right {
  width: 45.6%;
  color: #454545;
}

.main_project {
  background-color: transparent;
  color: #454545;
  padding: 23px 30px;
}

/*.main_project.active {*/
/*  color: white;*/
/*  background-color: #454545;*/
/*}*/

.main_sect2 {
  background-color: #f5f5f5;
  margin-top: 80px;
}

.main_sect2_bar {
  height: 28px;
  width: 1px;
  background-color: #868686;
}

.main_sect2_desc {
  line-height: 35px;
}

.download_btn {
  padding: 13px 34px;
  border: 1px solid #868686;
  color: #868686;
}
.download_btn:hover{
  border: 1px solid #000;
  color: #000;
}

.main_visual {
  position: relative;
  overflow: hidden;
}

.visual-slider img {
  width: 100%;
  /*height: 100vh;*/
  object-fit: cover;
}

.slider-controls {
  display: none;
  position: absolute;
  bottom: 50px;
  right: 1%;
  transform: translateX(-50%);
  /*display: flex;*/
  align-items: center;
  gap: 20px;
  color: #fff;
}

.slider-controls button {
  background: none;
  border: none;
  color: #fff;
  font-size: 24px;
  cursor: pointer;
}

.slider-progress {
  display: flex;
  align-items: center;
}

.progress-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.progress-bar {
  width: 250px;
  height: 2px;
  background: rgba(255, 255, 255, 0.3);
  margin: 0 10px;
}

.progress-inner {
  width: 0;
  height: 100%;
  background: #fff;
  transition: width 5s linear;
}

.slick-slide {
  position: relative;
}

.slide-number {
  position: absolute;
  bottom: 30px;
  right: 30px;
  color: #fff;
  font-size: 18px;
}

.main_project {
  position: relative;
  cursor: pointer;
  transition: color 0.5s ease;
  padding: 10px 20px;
  display: inline-block;
  overflow: hidden;
  color: #333;
  /*width: fit-content;*/
}

.main_project::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background-color: #454545;
  transition: left 0.5s ease;
  z-index: -1;
}

.main_project:hover::before,
.main_project.active::before {
  left: 0;
}

.main_project:hover,
.main_project.active {
  color: #fff;
  font-weight: 600;
}

.main_project:hover,
.main_project.active {
  color: #fff;
}

.main_sect1_content_left img {
  transition: opacity 0.5s ease;
}
   /* dots 스타일링 */
 .custom-dots {
   position: absolute;
   left: 45.5vw;
   top: 95%;
   transform: translateY(-50%);
   display: flex;
   flex-direction: row;
   gap: 19px;
   z-index: 1;
 }

.custom-dots li {
  margin: 0;
}

.custom-dots li button {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  border: none;
  padding: 0;
  cursor: pointer;
  transition: all 0.3s ease;
}

.custom-dots li.slick-active button {
  background: #fff;
  transform: scale(1.2);
}

/* dots 호버 효과 */
.custom-dots li button:hover {
  background: #fff;
}

/* mobile */
@media screen and (max-width: 767px) {
    main {
        margin-top: 50px !important;
    }

    .main_visual {
        height: 548px;
    }

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

    .slider-controls {
        display: none;
    }

    .main_sect2_desc {
        line-height: 21px;
    }

    .slick-dots {
        display: none !important;
    }

    .main_visual_slider .slide-item img {
        width: 100%;
        height: 363px !important;
        object-fit: cover;
    }

    .main_sect2 {
        margin-top: 0 !important;
    }

    .download_btn {
        padding: 7px 11px;
        border: 1px solid #868686;
        color: #868686;
    }

    .slick-dotted.slick-slider {
        margin-bottom: 17px;
    }

    .slide-content {
        bottom: 14px !important;
        left: 17px !important;
    }
}


/* tablet 세로 */
@media screen and (min-width: 768px) and (max-width: 1024px){
    .main_visual_slider .slide-item img {
        height: 413px !important;
    }
    .main_sect2 {
        margin-top: 0;
    }
}

/* tablet 가로모드 추가 설정 */
@media only screen and (min-width: 1024px) and (max-width: 1400px) and (orientation: landscape) {
    .main_visual_slider .slide-item img {
        height: 470px !important;
    }
    .slick-dotted.slick-slider {
        margin-bottom:10px;
    }

    .main_sect2 {
        margin-top: 0;
    }
}