.index_main .container .wrapper .sec_tit span {
  font-size: clamp(18px, 0.94vw, 18px);
  font-weight: 500;
  color: var(--color-point);
  transition: color 0.1s ease;
}
.index_main .container .wrapper .sec_tit h2 {
  font-size: clamp(32px, 2.19vw, 42px);
  font-weight: 700;
  transition: color 0.2s ease;
}
.index_main .container .wrapper .sec_1 .container .wrapper {
  position: relative;
  overflow: hidden;
}
.index_main .container .wrapper .sec_1 .container .wrapper .sec_tit {
  position: fixed;
  width: 100%;
  top: 23vh;
  z-index: 11;
}
.index_main .container .wrapper .sec_1 .container .wrapper .sec_img {
  margin-top: 220px;
  position: relative;
}
.index_main .container .wrapper .sec_1 .container .wrapper .sec_img img {
  width: 1400px;
  height: 100vh;
  object-fit: cover;
  transition: all 0.2s;
}
.index_main .container .wrapper .sec_1 .container .wrapper .sec_img .img_bg {
  position: absolute;
  width: 1400px;
  height: 100%;
  background-color: rgba(0, 0, 0, 0);
  transition: all 0.2s;
}
.index_main .container .wrapper .sec_1 .container .wrapper .break {
  position: absolute;
}
.index_main .container .wrapper .sec_1 .container .wrapper .breakTit {
  display: none !important;
}
.index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul li {
  flex: 1;
  height: clamp(400px, 24.27vw, 466px);
  transition: flex 0.5s;
  margin-right: 20px;
  border-radius: 10px;
  position: relative;
  overflow: hidden;
}
.index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul li .cont_txt {
  position: absolute;
  bottom: clamp(20px, 1.56vw, 30px);
  left: clamp(17px, 1.82vw, 35px);
  z-index: 11;
  height: clamp(52px, 3.39vw, 65px);
  overflow: hidden;
  transition: height 0.5s ease-in-out;
}
.index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul li .cont_txt span {
  font-size: clamp(13px, 0.94vw, 18px);
  color: #fff;
}
.index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul li .cont_txt h3 {
  font-size: clamp(22px, 1.46vw, 28px);
  color: #fff;
  font-weight: 700;
}
.index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul li .cont_txt p {
  font-size: clamp(15px, 0.94vw, 18px);
  color: #fff;
}
.index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul li .cont_bg {
  width: 100%;
  height: 100%;
  position: absolute;
  left: 0;
  top: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.3) 100%);
}
.index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul li:hover {
  flex: 3.1;
}
.index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul li:hover .cont_txt {
  height: clamp(102px, 6.77vw, 130px);
}
.index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul li:last-child {
  margin-right: 0;
}
.index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul .item1 {
  background-image: url(../img/brand_img2.png);
  background-size: cover;
}
.index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul .item2 {
  background-image: url(../img/brand_img3.png);
  background-size: cover;
}
.index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul .item3 {
  background-image: url(../img/brand_img4.png);
  background-size: cover;
}
.index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul .item4 {
  background-image: url(../img/brand_img5.png);
  background-size: cover;
}
.index_main .container .wrapper .sec_3 .container {
  background-color: #f2f4f8;
}
.index_main .container .wrapper .sec_3 .container .wrapper .sticky_tit {
  font-size: clamp(23px, 1.67vw, 32px);
  font-weight: 700;
  position: sticky;
  top: 200px;
}
.index_main .container .wrapper .sec_3 .container .wrapper .sec_cont {
  width: 70%;
}
.index_main .container .wrapper .sec_3 .container .wrapper .sec_cont .cont_tit h3 {
  font-size: clamp(23px, 1.46vw, 28px);
  font-weight: 700;
}
.index_main .container .wrapper .sec_3 .container .wrapper .sec_cont .cont_tit span {
  font-size: clamp(18px, 1.15vw, 22px);
  color: #666;
  font-weight: 400;
}
.index_main .container .wrapper .sec_3 .container .wrapper .sec_cont .cont_tit span br {
  display: none;
}
.index_main .container .wrapper .sec_3 .container .wrapper .sec_cont ul li {
  width: calc((100% - clamp(36px, 3.44vw, 66px)) / 2);
  height: fit-content;
}
.index_main .container .wrapper .sec_3 .container .wrapper .sec_cont ul li a {
  display: block;
  transition: transform 0.5s ease;
  border-radius: 14px;
  overflow: hidden;
}
.index_main .container .wrapper .sec_3 .container .wrapper .sec_cont ul li a .cont_img {
  height: clamp(200px, 15.63vw, 300px);
}
.index_main .container .wrapper .sec_3 .container .wrapper .sec_cont ul li a .cont_img img {
  height: 100%;
  object-fit: cover;
}
.index_main .container .wrapper .sec_3 .container .wrapper .sec_cont ul li a .cont_txt {
  background-color: #fff;
  padding: 25px;
}
.index_main .container .wrapper .sec_3 .container .wrapper .sec_cont ul li a .cont_txt dl dt {
  font-size: clamp(16px, 1.46vw, 28px);
  font-weight: 700;
  color: var(--color-point);
  margin-bottom: 5px;
}
.index_main .container .wrapper .sec_3 .container .wrapper .sec_cont ul li a .cont_txt dl dd {
  font-size: clamp(14px, 0.94vw, 18px);
  color: #111;
}
.index_main .container .wrapper .sec_3 .container .wrapper .sec_cont ul li a .cont_txt .arrow {
  width: 30px;
  height: 30px;
  background-color: #111;
  border-radius: 50%;
  position: relative;
  display: block;
}
.index_main .container .wrapper .sec_3 .container .wrapper .sec_cont ul li a .cont_txt .arrow::before {
  content: "";
  width: 8px;
  height: 8px;
  background-image: url(../img/brand_arrow.png);
  background-size: 100% 100%;
  background-repeat: no-repeat;
  position: absolute;
  display: block;
  top: 65%;
  left: 15%;
  opacity: 0;
}
.index_main .container .wrapper .sec_3 .container .wrapper .sec_cont ul li a .cont_txt .arrow::after {
  content: "";
  width: 8px;
  height: 8px;
  background-image: url(../img/brand_arrow.png);
  background-size: 100% 100%;
  background-repeat: no-repeat;
  position: absolute;
  display: block;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.index_main .container .wrapper .sec_3 .container .wrapper .sec_cont ul li:nth-child(even) {
  margin-top: 70px;
}
.index_main .container .wrapper .sec_3 .container .wrapper .sec_cont ul li:hover a {
  transform: translateY(-15px);
  box-shadow: 2px 2px 40px 0 rgba(0, 0, 0, 0.2);
}
.index_main .container .wrapper .sec_3 .container .wrapper .sec_cont ul li:hover a .cont_txt .arrow::before {
  animation: arrowBefore 0.3s forwards 0.3s;
}
@keyframes arrowBefore {
  from {
    opacity: 0;
    top: 65%;
    left: 15%;
  }
  to {
    opacity: 1;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
  }
}
.index_main .container .wrapper .sec_3 .container .wrapper .sec_cont ul li:hover a .cont_txt .arrow::after {
  animation: arrowAfter 0.3s forwards;
}
@keyframes arrowAfter {
  from {
    opacity: 1;
    top: 50%;
    left: 50%;
  }
  to {
    opacity: 0;
    top: -50%;
    left: 150%;
  }
}

@media (max-width: 1100px) {
  .index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul li {
    flex: 1 0 40%;
    margin-bottom: 20px;
  }
  .index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul li .cont_txt {
    height: clamp(60px, 5.91vw, 65px);
    left: clamp(25px, 3.18vw, 35px);
    bottom: clamp(20px, 2.73vw, 30px);
  }
  .index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul li .cont_txt span {
    font-size: clamp(14px, 1.64vw, 18px);
  }
  .index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul li .cont_txt h3 {
    font-size: clamp(22px, 2.55vw, 28px);
  }
  .index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul li .cont_txt p {
    font-size: clamp(14px, 1.64vw, 18px);
  }
  .index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul li:nth-child(even) {
    margin-right: 0;
  }
  .index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul li:hover {
    flex: 1 0 50%;
  }
  .index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul li:hover .cont_txt {
    height: clamp(110px, 11.82vw, 130px);
  }
  .index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul .item3,
  .index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul .item4 {
    margin-bottom: 0;
  }
}
@media (max-width: 750px) {
  .index_main .container .wrapper .sec_tit span {
    font-size: clamp(20px, 3.47vw, 26px);
    font-weight: 500;
  }
  .index_main .container .wrapper .sec_tit h2 {
    font-size: clamp(25px, 6vw, 45px);
  }
  .index_main .container .wrapper .sec_2 .container .wrapper .sec_tit {
    text-align: center;
  }
  .index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul li {
    flex: 1 0 100%;
    margin-right: 0;
    height: clamp(300px, 72vw, 540px);
    margin-bottom: clamp(30px, 4vw, 30px);
  }
  .index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul li .cont_txt {
    height: auto;
    left: clamp(15px, 5.33vw, 40px);
    bottom: clamp(15px, 5.33vw, 40px);
  }
  .index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul li .cont_txt span {
    font-size: clamp(15px, 3.47vw, 26px);
    font-weight: 300;
  }
  .index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul li .cont_txt h3 {
    font-size: clamp(20px, 4.53vw, 34px);
  }
  .index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul li .cont_txt p {
    font-size: clamp(12px, 3.47vw, 26px);
    font-weight: 300;
  }
  .index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul li:hover {
    flex: 1 0 100%;
  }
  .index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul li:hover .cont_txt {
    height: auto;
  }
  .index_main .container .wrapper .sec_2 .container .wrapper .sec_cont ul .item3 {
    margin-bottom: clamp(30px, 4vw, 30px);
  }
  .index_main .container .wrapper .sec_3 .container .wrapper {
    flex-direction: column;
  }
  .index_main .container .wrapper .sec_3 .container .wrapper .sticky_tit {
    position: relative;
    top: 0;
    font-size: clamp(28px, 6vw, 45px);
  }
  .index_main .container .wrapper .sec_3 .container .wrapper .sec_cont {
    width: 100%;
  }
  .index_main .container .wrapper .sec_3 .container .wrapper .sec_cont .cont_tit h3 {
    font-size: clamp(19px, 4.53vw, 34px);
  }
  .index_main .container .wrapper .sec_3 .container .wrapper .sec_cont .cont_tit span {
    font-size: clamp(15px, 3.47vw, 26px);
    font-weight: 400;
  }
  .index_main .container .wrapper .sec_3 .container .wrapper .sec_cont ul li {
    width: 100%;
    margin-bottom: clamp(30px, 8vw, 60px);
  }
  .index_main .container .wrapper .sec_3 .container .wrapper .sec_cont ul li a {
    transition: box-shadow 0.2s ease-in-out;
  }
  .index_main .container .wrapper .sec_3 .container .wrapper .sec_cont ul li a .cont_img {
    height: clamp(220px, 54.67vw, 410px);
  }
  .index_main .container .wrapper .sec_3 .container .wrapper .sec_cont ul li a .cont_txt {
    padding: clamp(20px, 4.67vw, 35px) clamp(20px, 5.33vw, 40px);
  }
  .index_main .container .wrapper .sec_3 .container .wrapper .sec_cont ul li a .cont_txt dl dt {
    font-size: clamp(20px, 4.53vw, 34px);
  }
  .index_main .container .wrapper .sec_3 .container .wrapper .sec_cont ul li a .cont_txt dl dd {
    font-size: clamp(15px, 3.47vw, 26px);
  }
  .index_main .container .wrapper .sec_3 .container .wrapper .sec_cont ul li a .cont_txt .arrow {
    width: clamp(30px, 6vw, 45px);
    height: clamp(30px, 6vw, 45px);
  }
  .index_main .container .wrapper .sec_3 .container .wrapper .sec_cont ul li a .cont_txt .arrow::before, .index_main .container .wrapper .sec_3 .container .wrapper .sec_cont ul li a .cont_txt .arrow::after {
    width: clamp(8px, 1.6vw, 12px);
    height: clamp(8px, 1.6vw, 12px);
  }
  .index_main .container .wrapper .sec_3 .container .wrapper .sec_cont ul li:nth-child(even) {
    margin-top: 0;
  }
  .index_main .container .wrapper .sec_3 .container .wrapper .sec_cont ul li:hover a {
    transform: none;
  }
}
@media (max-width: 600px) {
  .index_main .container .wrapper .sec_1 .container .wrapper .sec_img {
    margin-top: 180px;
  }
}
@media (max-width: 450px) {
  .index_main .container .wrapper .sec_1 .container .wrapper .sec_img {
    margin-top: 150px;
  }
  .index_main .container .wrapper .sec_3 .container .wrapper .sec_cont .cont_tit span {
    line-height: 1.2;
    display: block;
    padding-top: 10px;
  }
  .index_main .container .wrapper .sec_3 .container .wrapper .sec_cont .cont_tit span br {
    display: block;
  }
}