.material_banner {
  background: linear-gradient(161.6725deg, #1a1a2e 14%, #16163a 50%, #2d3cdf 86%);
  padding-top: 99px;
  overflow: hidden;
  position: relative;
}
.material_banner .flex {
  padding: 5.5rem 0 7.5rem;
}
.material_banner .image {
  position: relative;
  width: 73.19444444%;
  margin-right: -20.55555556%;
  padding-bottom: 7.08333333%;
}
.material_banner .image .img {
  padding-bottom: 50.75901328%;
  clip-path: polygon(22% 0, 100% 0, 78% 100%, 0 100%);
}
.material_banner .image .certified_box {
  position: absolute;
  z-index: 2;
  right: -3.131%;
  bottom: 0;
  background-color: #3a72ef;
  color: #fff;
  display: grid;
  grid-template-columns: 5rem 1fr;
  align-items: center;
  min-width: 59.48766603%;
  min-height: 19.49247649%;
  max-height: 90%;
  max-width: 90%;
  --deg: 5.6rem;
  clip-path: polygon(var(--deg) 0, 100% 0, calc(100% - var(--deg)) 100%, 0 100%);
  gap: 2.5rem;
  padding: 1.5rem 6.6rem;
}
.material_banner .image .certified_box .icon {
  padding-bottom: 100%;
  align-self: center;
}
.material_banner .image .certified_box strong {
  display: block;
  font-size: 2.8rem;
  font-weight: 600;
  margin-top: 2px;
}
.material_banner .image .certified_box span {
  display: block;
  font-size: 1.5rem;
  opacity: 0.8;
  margin-top: 0.8rem;
  font-weight: 200;
  letter-spacing: 0.025rem;
}
.material_banner .image::before {
  position: absolute;
  width: 1px;
  height: 200%;
  background-color: #fff;
  opacity: 0.11;
  left: 22.5%;
  top: 0;
  content: '';
  transform: rotate(24deg);
  transform-origin: left top;
}
.material_banner .head {
  flex: 1;
  width: 100%;
  padding-top: 2.3%;
}
.material_banner p {
  hyphens: auto;
  max-width: 57.6rem;
  margin-top: 2.4rem;
}
.material_banner .btns {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 2rem 7.2rem;
  margin-top: 4.5rem;
}
.material_banner .features {
  margin-top: 8.7rem;
}
.material_banner .features ul {
  max-width: 56rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2rem;
}
.material_banner .features li strong {
  font-size: 3.4rem;
  font-weight: 600;
}
.material_banner .features li p {
  font-size: 1.5rem;
  line-height: normal;
  margin-top: 0.5rem;
}
.material_banner .float_mask .img {
  filter: contrast(0) brightness(2);
}
.material_banner .float_mask .img img {
  opacity: 0.11;
}
.material_banner .float_mask .img1 {
  left: -39.43%;
  bottom: -34.1%;
}
.material_banner .float_mask .img2 {
  right: -11.71875%;
  bottom: 24.134%;
}
.materials_intro {
  padding: 14.5rem 0 16.1rem;
}
.materials_intro .img {
  width: 45.76388889%;
  --h: 104.55235205%;
  margin-top: 2.2222%;
}
.materials_intro .lt {
  flex: 1;
  width: 100%;
  max-width: 68.8rem;
}
.materials_intro p {
  hyphens: auto;
  margin-top: 3.2rem;
}
.materials_intro p + p {
  margin-top: 3rem;
}
.materials_intro .features {
  position: relative;
  z-index: 2;
  padding-top: 4.3rem;
  margin-top: 1.4rem;
  margin-right: -14.8255814%;
}
.materials_intro .features::before {
  position: absolute;
  left: 0;
  right: -7.8283%;
  top: 0;
  bottom: 0;
  content: '';
  background-color: #fff;
  z-index: -1;
  pointer-events: none;
}
.materials_intro .features ul {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.1rem;
}
.materials_intro .features li {
  display: grid;
  grid-template-columns: 3.8rem 1fr;
  align-items: center;
  background-color: var(--bg);
  border: 1px solid #e5e7ea;
  line-height: 2.2rem;
  color: #0b0e1e;
  gap: 1.6rem;
  padding: 2.2rem 2.7rem 1.9rem;
}
.materials_intro .features li .icon {
  padding-bottom: 100%;
}
.materials_intro .features li p {
  max-width: 23rem;
  hyphens: unset;
  margin: 0;
}
.material_properties {
  position: relative;
  background-color: var(--bg2);
  padding: 13rem 0 13.5rem;
}
.material_properties p {
  max-width: 72.7rem;
  margin-top: 1.6rem;
}
.material_properties .items {
  margin-top: 4.3rem;
}
.material_properties .items ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(35rem, 100%), 1fr));
  gap: 3.5rem 1.77083333%;
}
.material_properties .items .active .item {
  box-shadow: var(--shadow3);
}
.material_properties .items .active .item::after {
  opacity: 1;
}
.material_properties .item {
  position: relative;
  display: block;
  height: 100%;
  transition: all 0.3s;
  background-color: #fff;
  border: 1px solid var(--border2);
  padding: 6.9114471% 6.9114471% 7.5593952%;
  min-height: 34.8rem;
}
.material_properties .item::after {
  position: absolute;
  width: 100%;
  height: 0.3rem;
  background-color: var(--primary);
  left: 0;
  bottom: -2px;
  content: '';
  opacity: 0;
  transition: all 0.3s;
}
.material_properties .item .icon {
  width: 5rem;
  height: 5rem;
}
.material_properties .item .info {
  margin-top: 3.5rem;
}
.material_properties .item .info h3 {
  font-size: 2.4rem;
  font-weight: 600;
  color: #1a1a2e;
}
.material_properties .item .info strong {
  display: block;
  font-weight: 500;
  color: var(--primary);
  margin-top: 0.8rem;
}
.material_properties .item .info p {
  font-size: 1.7rem;
  line-height: 2.8rem;
  color: var(--text);
  max-width: 38.5rem;
  margin-top: 1.9rem;
  letter-spacing: -0.005rem;
}
.material_properties .item .info p.hyphens {
  hyphens: auto;
}
.material_properties .float_mask .img1 {
  left: -40.15625%;
  bottom: -16.9086251%;
}
.material_properties .float_mask .img2 {
  right: -2.0833333%;
  bottom: 57.9846285%;
}
.material_process {
  padding: 12.7rem 0 13.3rem;
}
.material_process .image {
  position: relative;
  width: 45.90277778%;
  padding-bottom: 8.98888889%;
}
.material_process .image .img {
  padding-bottom: 87.29198185%;
}
.material_process .image .features {
  position: absolute;
  left: 0;
  bottom: 0;
  right: 7.41301059%;
  z-index: 2;
  background-color: #fff;
  padding-top: 4.4rem;
  padding-right: 4.4rem;
}
.material_process .image .features ul {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.6rem 1.8rem;
}
.material_process .image .features li {
  transition: all 0.3s;
  border: 1px solid #ededed;
  text-align: center;
  padding: 1.9rem 2rem 1.7rem;
}
.material_process .image .features li.active {
  box-shadow: var(--shadow3);
}
.material_process .image .features strong {
  font-size: 2.6rem;
  font-weight: 600;
  color: var(--primary);
}
.material_process .image .features p {
  font-size: 1.4rem;
  color: var(--text);
  margin-top: 0.8rem;
  letter-spacing: -0.012rem;
}
.material_process .image + .rt {
  max-width: 68.8rem;
}
.material_process .rt {
  flex: 1;
  width: 100%;
  padding-top: 0.833333%;
}
.material_process .head h2 {
  max-width: 56.8rem;
}
.material_process .head p {
  max-width: 63.2rem;
  margin-top: 3.3rem;
}
.material_process .steps {
  margin-top: 4.8rem;
}
.material_process .steps .item {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
  font-size: 2rem;
  gap: 4rem;
  padding-bottom: 2.7rem;
}
.material_process .steps .item::before,
.material_process .steps .item::after {
  position: absolute;
  width: 1px;
  height: 100%;
  background-color: #e0e0e0;
  top: 3.15em;
  left: 1.575em;
  content: '';
  transform: translateX(-50%);
}
.material_process .steps .item::after {
  height: 0;
  background-color: var(--primary);
}
.material_process .steps .item.active .order {
  background-color: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.material_process .steps .item.active_line::after {
  height: calc(100% - 3.15em + 2px);
  transition: height 2.7s linear;
}
.material_process .steps .item:last-child {
  padding-bottom: 0;
}
.material_process .steps .item:last-child::before,
.material_process .steps .item:last-child::after {
  display: none;
}
.material_process .steps .order {
  position: relative;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  color: var(--primary);
  border: 1px solid var(--border2);
  background-color: #fff;
  transition: all 0.3s;
  min-width: 3.15em;
  min-height: 3.15em;
  padding: 0 2px;
  margin-top: 2px;
}
.material_process .steps .info {
  min-height: 8.5rem;
}
.material_process .steps .info h3 {
  font-size: 2rem;
  font-weight: 600;
  color: #1a1a2e;
}
.material_process .steps .info p {
  font-size: 1.4rem;
  line-height: 2.2rem;
  color: var(--text);
  margin-top: 0.8rem;
  letter-spacing: -0.012rem;
}
.material_grades {
  background-color: var(--bg2);
  padding: 11.9rem 0 11.8rem;
}
.material_grades p {
  max-width: 72.7rem;
  margin-top: 1.7rem;
}
.material_grades .list {
  margin-top: 4.9rem;
}
.material_grades .list ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(28rem, 100%), 1fr));
  gap: 3.1rem 1.48148148%;
}
.material_grades .list .active .item {
  box-shadow: var(--shadow3);
}
.material_grades .list .active .item::after {
  opacity: 1;
}
.material_grades .item {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  height: 100%;
  transition: all 0.3s;
  background-color: #fff;
  border: 1px solid #eef0f5;
  padding: 10.755814% 8.7209302% 7.2674419%;
}
.material_grades .item::after {
  position: absolute;
  width: 100%;
  height: 0.3rem;
  background-color: var(--primary);
  left: 0;
  bottom: -2px;
  content: '';
  opacity: 0;
  transition: all 0.3s;
}
.material_grades .item .info {
  flex: 1;
}
.material_grades .item .info .title {
  font-size: 2.2rem;
  font-weight: 600;
  color: #1a1a2e;
}
.material_grades .item .info .cat {
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--primary);
  margin-top: 0.4rem;
}
.material_grades .item .info .desc {
  line-height: 2.6rem;
  color: var(--text);
  max-width: 28.2rem;
  hyphens: auto;
  margin-top: 1.1rem;
  overflow: hidden;
  text-overflow: ellipsis;
  -webkit-line-clamp: 5;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  height: 13rem;
  letter-spacing: -0.007rem;
}
.material_grades .item .info .tags {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 0.7rem 1.1rem;
  margin-top: 1.3rem;
  min-height: 3.1rem;
}
.material_grades .item .info .tags span {
  font-size: 1.3rem;
  font-weight: 500;
  color: var(--text);
  border: 1px solid #d1d5db;
  transition: all 0.3s;
  line-height: 1.92307692;
  padding: 0 0.6154em;
}
.material_grades .item .info .tags span:hover {
  background-color: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.material_grades .item .btn_i {
  margin-top: 2rem;
}
.material_grades .item .btn_i:hover {
  color: var(--primary);
}
.page_components {
  padding-top: 9.7rem;
  padding-bottom: 11.8rem;
}
.material_options {
  background-color: var(--bg2);
  padding: 14.9rem 0 15.4rem;
}
.material_options .lt {
  flex: 1;
  width: 100%;
  max-width: 61.5rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding-bottom: 1px;
}
.material_options .head h2 {
  max-width: 53.3rem;
}
.material_options .head p {
  max-width: 58.5rem;
  margin-top: 2.3rem;
}
.material_options .options {
  flex: 1;
  margin-top: 3.8rem;
  width: 100%;
}
.material_options .options h3 {
  font-size: 2.2rem;
  font-weight: 600;
  display: grid;
  grid-template-columns: 2.1rem 1fr;
  align-items: center;
  gap: 1.7rem;
}
.material_options .options h3::before {
  display: block;
  padding-bottom: 100%;
  content: '';
  background: url("../img/finish-ico.svg") no-repeat center / contain;
}
.material_options .options .nav {
  margin-top: 2.2rem;
}
.material_options .options .nav .nav_list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem 2rem;
}
.material_options .options .nav .nav_item {
  display: flex;
  align-items: center;
  font-size: 1.4rem;
  font-weight: 500;
  color: #444444;
  background-color: #fff;
  border: 1px solid var(--border2);
  transition: all 0.3s;
  cursor: pointer;
  gap: 1.1rem;
  min-height: 4.9rem;
  padding: 1rem 1.8rem;
}
.material_options .options .nav .nav_item::before {
  display: inline-block;
  content: '';
  flex-shrink: 0;
  width: 1.4rem;
  height: 1.4rem;
  background: url("../img/gou.svg") no-repeat center / contain;
  filter: contrast(0) brightness(0.8);
}
.material_options .options .nav .nav_item.active {
  font-size: 1.5rem;
  font-weight: 600;
  color: #1a1a2e;
  border-color: var(--primary);
  box-shadow: var(--shadow3);
}
.material_options p.tip {
  font-size: 1.7rem;
  line-height: 2.5rem;
  color: var(--text);
  max-width: 33.3rem;
  margin-top: 4.9rem;
  letter-spacing: -0.005rem;
}
.material_options p.tip a {
  font-weight: 500;
  color: var(--primary);
  text-decoration: underline;
  transition: all 0.3s;
}
.material_options .rt {
  align-self: center;
  width: 49.23611111%;
  margin-top: 1.9%;
}
.material_options .material_options_swiper {
  overflow: hidden;
  margin: -1px;
  padding: 1px;
}
.material_options .material_options_swiper .item {
  display: flex;
  flex-direction: column;
  height: 100%;
  background-color: #fff;
  border: 1px solid var(--border2);
  border-bottom: 0.3rem solid var(--primary);
}
.material_options .material_options_swiper .item:hover img {
  transform: scale(1.03);
}
.material_options .material_options_swiper .img {
  margin: -1px;
  padding-bottom: 52.99957567%;
}
.material_options .material_options_swiper .info {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 3.6775106% 6.6478076% 4.2432815%;
}
.material_options .material_options_swiper .info .text {
  flex: 1;
}
.material_options .material_options_swiper .info .title {
  display: flex;
  align-items: center;
  font-size: 2.4rem;
  font-weight: 600;
  color: #0b0e1e;
  gap: 1.8rem;
}
.material_options .material_options_swiper .info .title .pop {
  display: inline-block;
  text-align: center;
  background-color: var(--primary);
  color: #fff;
  font-size: 0.5833333em;
  font-weight: 500;
  line-height: 2;
  padding: 0 0.75em;
}
.material_options .material_options_swiper .info .desc {
  font-size: 1.7rem;
  line-height: 3rem;
  color: var(--text);
  max-width: 57.1rem;
  margin-top: 1.1rem;
  letter-spacing: -0.005rem;
}
.material_options .material_options_swiper .info .btn_i {
  margin-top: 2.9rem;
}
.material_options .material_options_swiper .info .btn_i:hover {
  color: var(--primary);
}
.page_faqs {
  padding-top: 12rem;
  padding-bottom: 11.7rem;
}
.page_faqs .faq_list .answer {
  padding-bottom: 2.5rem;
}
.page_materials {
  background-image: linear-gradient(to bottom, var(--bg2) 8.44%, #f9fafd 32%, #fefefe);
}
.footer_contact {
  background-image: linear-gradient(to bottom, #fefefe, transparent 45.3%);
}
@media screen and (min-width: 769px) and (max-width: 1440px) {
  .material_banner .image {
    width: 70%;
    margin-right: -15%;
  }
}
@media screen and (min-width: 769px) and (max-width: 1220px) {
  .material_banner .image {
    width: 62%;
    margin-right: -10%;
  }
  .material_banner .image .certified_box {
    padding-right: 20rem;
  }
}
@media screen and (min-width: 769px) and (max-width: 1024px) {
  .material_banner .features li strong {
    font-size: 2.5rem;
  }
  .material_banner .image .certified_box {
    padding-right: 10rem;
  }
  .material_banner .image .certified_box strong {
    font-size: 2rem;
  }
}
@media screen and (max-width: 768px) {
  .material_banner {
    padding-top: 64px;
  }
  .material_banner .flex {
    padding: 30px 0 40px;
    flex-direction: column-reverse;
  }
  .material_banner .image {
    width: 100%;
    margin: 0;
  }
  .material_banner .image .certified_box {
    --deg: 39px;
    gap: 14px;
    grid-template-columns: 40px 1fr;
    padding: 14px 20px 14px 40px;
  }
  .material_banner .image .certified_box strong {
    font-size: 18px;
    margin: 0;
  }
  .material_banner .image .certified_box span {
    font-size: 13px;
    letter-spacing: unset;
    margin-top: 5px;
  }
  .material_banner .head {
    padding: 0;
  }
  .material_banner .btns {
    margin-top: 20px;
    gap: 20px 30px;
  }
  .material_banner .btns .btn,
  .material_banner .btns .btn_i {
    margin: 0;
  }
  .material_banner .features {
    margin-top: 20px;
  }
  .material_banner .features ul {
    gap: 20px;
    max-width: unset;
  }
  .material_banner .features li {
    flex: 1;
  }
  .material_banner .features li strong {
    font-size: 20px;
  }
  .material_banner .features li p {
    font-size: 14px;
    margin-top: 5px;
  }
  .materials_intro {
    padding: 50px 0;
  }
  .materials_intro .flex {
    flex-direction: column-reverse;
  }
  .materials_intro .lt {
    max-width: unset;
  }
  .materials_intro .img {
    margin: 0;
    width: 100%;
    max-width: 400px;
  }
  .materials_intro .features {
    padding: 0;
    margin: 30px 0 0;
  }
  .materials_intro .features::before {
    display: none;
  }
  .materials_intro .features ul {
    gap: 16px;
  }
  .materials_intro .features li {
    padding: 14px;
    grid-template-columns: 30px 1fr;
    gap: 12px;
    line-height: 1.5;
  }
  .material_properties {
    padding: 50px 0 30px;
  }
  .material_properties .items {
    margin-top: 10px;
  }
  .material_properties .items ul {
    width: calc(100% + 40px);
    margin: 0 -20px;
    padding: 20px;
    overflow-x: auto;
    display: flex;
    gap: 20px;
  }
  .material_properties .items ul::-webkit-scrollbar {
    display: none;
  }
  .material_properties .items ul li {
    flex: 0 0 250px;
  }
  .material_properties .item {
    padding: 20px;
    min-height: unset;
  }
  .material_properties .item .icon {
    width: 40px;
    height: 40px;
  }
  .material_properties .item .info {
    margin-top: 20px;
  }
  .material_properties .item .info h3 {
    font-size: 18px;
  }
  .material_properties .item .info strong {
    margin-top: 5px;
  }
  .material_properties .item .info p {
    font-size: 14px;
    line-height: 1.5;
    letter-spacing: unset;
    margin-top: 10px;
  }
  .material_process {
    padding: 50px 0;
  }
  .material_process .flex {
    display: block;
  }
  .material_process .image {
    width: 100%;
    padding: 0;
    display: grid;
    grid-template-columns: 45% 1fr;
    align-items: center;
    gap: 20px;
  }
  .material_process .image .features {
    position: static;
    padding: 0;
  }
  .material_process .image .features ul {
    gap: 16px;
  }
  .material_process .image .features li {
    padding: 14px;
  }
  .material_process .image .features strong {
    font-size: 18px;
  }
  .material_process .image .features p {
    font-size: 13px;
    letter-spacing: unset;
    margin-top: 5px;
  }
  .material_process .image + .rt {
    max-width: unset;
  }
  .material_process .rt {
    padding: 0;
    margin-top: 30px;
  }
  .material_process .head p {
    margin-top: 12px;
  }
  .material_process .steps {
    margin-top: 30px;
  }
  .material_process .steps .item {
    padding-bottom: 20px;
    font-size: 16px;
    gap: 20px;
  }
  .material_process .steps .order {
    margin: 0;
  }
  .material_process .steps .info {
    min-height: unset;
  }
  .material_process .steps .info h3 {
    font-size: 16px;
  }
  .material_process .steps .info p {
    font-size: 14px;
    line-height: 1.5;
    letter-spacing: unset;
    margin-top: 5px;
  }
  .material_grades {
    padding: 50px 0;
  }
  .material_grades .list {
    margin-top: 30px;
  }
  .material_grades .list ul {
    grid-template-columns: repeat(auto-fill, minmax(min(240px, 100%), 1fr));
    gap: 30px 16px;
  }
  .material_grades .item {
    padding: 20px;
  }
  .material_grades .item .info .title {
    font-size: 18px;
  }
  .material_grades .item .info .cat {
    font-size: 13px;
    margin-top: 5px;
  }
  .material_grades .item .info .desc {
    font-size: 14px;
    line-height: 1.5;
    letter-spacing: unset;
    margin-top: 10px;
    height: unset;
  }
  .material_grades .item .info .tags {
    margin-top: 20px;
    gap: 10px;
    min-height: unset;
  }
  .material_grades .item .info .tags span {
    font-size: 12px;
  }
  .material_grades .item .btn_i {
    margin-top: 20px;
  }
  .page_components {
    padding: 50px 0;
  }
  .material_options {
    padding: 50px 0;
  }
  .material_options .flex {
    align-items: center;
  }
  .material_options .lt {
    max-width: unset;
    display: block;
    padding: 0;
    overflow: hidden;
  }
  .material_options .head p {
    margin-top: 12px;
  }
  .material_options .options {
    margin-top: 30px;
  }
  .material_options .options h3 {
    font-size: 18px;
    grid-template-columns: 18px 1fr;
    gap: 14px;
  }
  .material_options .options .nav {
    margin-top: 0;
  }
  .material_options .options .nav .nav_list {
    gap: 12px;
    flex-wrap: nowrap;
    overflow-x: auto;
    display: flex;
    white-space: nowrap;
    padding: 20px;
    margin: 0 -20px;
  }
  .material_options .options .nav .nav_list::-webkit-scrollbar {
    display: none;
  }
  .material_options .options .nav .nav_item {
    font-size: 14px;
    gap: 8px;
    min-height: unset;
    padding: 12px;
  }
  .material_options p.tip {
    font-size: 14px;
    line-height: 1.4;
    letter-spacing: unset;
    margin-top: 10px;
  }
  .material_options .rt {
    margin: 0;
  }
  .material_options .material_options_swiper .info {
    padding: 20px;
  }
  .material_options .material_options_swiper .info .title {
    font-size: 18px;
    gap: 10px;
  }
  .material_options .material_options_swiper .info .desc {
    font-size: 14px;
    line-height: 1.5;
    margin-top: 10px;
    letter-spacing: unset;
  }
  .material_options .material_options_swiper .info .btn_i {
    margin-top: 20px;
  }
  .page_faqs {
    padding: 50px 0;
  }
  .page_faqs .faq_list .answer {
    padding-bottom: 20px;
  }
}
@media screen and (max-width: 576px) {
  .material_banner .features ul {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
  .materials_intro .features ul {
    grid-template-columns: 1fr;
  }
  .material_process .image {
    grid-template-columns: 1fr;
  }
  .material_options .lt {
    overflow: unset;
  }
  .material_options .rt {
    width: 100%;
  }
}