html {
  overflow: hidden;
}
.product-banner {
  position: relative;
  overflow: hidden;
  margin-bottom: 0;
  background: url(../images/mask.png) no-repeat left top / 110% 100%;
  color: #fff;
  height: 100vh;
  padding: 50vh 7vw 0;
  font-family: JinBuTi;
}
.product-banner img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -1;
}
.product-banner h1 {
  margin-top: 0.5em;
  font-size: 4vw;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}
.product-banner h4 {
  font-size: 2vw;
  margin-bottom: 0;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}
.product-banner p {
  font-size: 1.5em;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}
.product-nav {
  padding: 0 7vw;
  height: 30vh;
  padding-top: 15vh;
  background-color: #120522;
  color: #fff;
}
.product-nav ul {
  display: flex;
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
  border-bottom: 1px solid #706879;
}
.product-nav ul li {
  flex-grow: 1;
  text-align: center;
  font-size: 1em;
  cursor: pointer;
  padding: 1.5em 0;
}
.product-nav ul li.active {
  font-size: 1.3em;
  border: 1px solid #706879;
  border-bottom: 0;
}
.product-nav ul li.active,
.product-nav ul li:hover {
  color: #71F362;
}
.product-intro {
  height: 100vh;
  padding: 0 7vw;
  background-color: #120522;
  color: #fff;
  display: flex;
  gap: 4em;
  align-items: center;
}
.product-intro img {
  flex: 0 0 55%;
  max-width: 55%;
  flex-grow: 0;
  border-radius: 1em;
}
.product-intro .intro-text {
  flex: 1;
}
.product-intro .intro-text h2 {
  font-size: 2em;
  font-weight: normal;
  font-family: JinBuTi;
  margin-bottom: 2em;
}
.product-intro .intro-text p {
  font-size: 1.1em;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.8);
}
.product-features {
  height: 100vh;
  padding: 15vh 7vw 0;
  color: #120522;
  background: #F5F7F2;
}
.product-features .feature-section {
  height: 100%;
  display: flex;
  gap: 5em;
  flex-wrap: nowrap;
  font-family: JinBuTi;
}
.product-features .feature-section .feature-nav {
  font-size: 1em;
  flex: 0 0 15vw;
}
.product-features .feature-section .feature-nav li {
  margin-bottom: 4vh;
  font-size: 1.2em;
  cursor: pointer;
  transition: all 0.3s ease;
  color: #6F6877;
}
.product-features .feature-section .feature-nav li:hover {
  color: #71F362;
}
.product-features .feature-section .feature-nav li.active {
  font-size: 2.6em;
  color: #120522;
}
.product-features .feature-section .feature-nav li.active::before {
  content: "·";
  font-family: Microsoft YaHei;
  display: inline-block;
  color: #5e33f6;
  margin-left: -0.5em;
  position: absolute;
}
.product-features .feature-section .feature-content {
  height: 100%;
}
.product-features .feature-section .feature-content ul {
  height: 100%;
  display: none;
  padding-bottom: 30px;
  margin: 0;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: 1fr 1fr;
  gap: 30px;
}
.product-features .feature-section .feature-content ul.active {
  display: grid;
}
.product-features .feature-section .feature-content li {
  position: relative;
  padding: 1.5em;
  border-radius: 1em;
  transition: all 0.3s ease;
  border: 1px solid #120522;
  font-size: 1.5em;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.product-features .feature-section .feature-content li:hover {
  color: #fff;
  background: #7C5AF5;
}
.product-features .feature-section .feature-content li:hover img {
  filter: brightness(0) invert(1);
}
.product-features .feature-section .feature-content li h3 {
  margin: 0;
}
.product-features .feature-section .feature-content li p {
  font-family: Microsoft YaHei;
  line-height: 1.6;
  font-size: 0.7em;
}
.product-features .feature-section .feature-content li img {
  position: absolute;
  top: 1.5em;
  right: 1.5em;
  width: 1.5em;
}
.product-params {
  height: 100vh;
  padding: 0 7vw 0;
  background-color: #120522;
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5vh;
}
.product-params .section-title {
  text-align: center;
}
.product-params .section-title h2 {
  font-size: 2.5em;
  font-weight: normal;
  font-family: JinBuTi;
  margin-bottom: 0;
}
.product-params .section-title p {
  font-size: 4em;
  color: #3D324A;
  margin-top: 0;
  margin-bottom: -1em;
}
.product-params .params-list {
  color: #fff;
}
.product-params .params-list > div {
  display: flex;
  align-items: center;
  padding: 1em 0;
  justify-content: center;
  border-bottom: 1px solid #706879;
  gap: 10vw;
  transition: all 0.2s ease;
  color: #f1f1f1;
}
.product-params .params-list > div:hover {
  background: #5E33F6;
}
.product-params .params-list > div dt {
  flex: 0 0 50%;
  text-align: right;
}
.product-params .params-list > div dd {
  flex: 0 0 50%;
  text-align: left;
}
.product-gallery {
  height: 100vh;
  padding: 0 7vw 0;
  background-color: #120522;
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5vh;
}
.product-gallery .section-title {
  text-align: center;
}
.product-gallery .section-title h2 {
  font-size: 2.5em;
  font-weight: normal;
  font-family: JinBuTi;
  margin-bottom: 0;
}
.product-gallery .section-title p {
  font-size: 4em;
  color: #3D324A;
  margin-top: 0;
  margin-bottom: -1em;
}
.product-gallery .gallery-grid {
  display: flex;
  gap: 2em;
  overflow-x: auto;
  padding-bottom: 5em;
}
.product-gallery .gallery-grid::-webkit-scrollbar {
  border-radius: 10px;
  background-color: #D8D8D8;
  /* or add it to the track */
  height: 7px;
}
.product-gallery .gallery-grid::-webkit-scrollbar-thumb {
  border-radius: 10px;
  background: #71F362;
}
.product-gallery .gallery-grid .gallery-item {
  flex: 0 0 23%;
  aspect-ratio: 0.758;
  overflow: hidden;
  border-radius: 0.5em;
  cursor: pointer;
}
.product-gallery .gallery-grid .gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.product-gallery .gallery-grid .gallery-item img:hover {
  transform: scale(1.1);
}
.customer-projects {
  height: 100vh;
  padding: 0 3vw 0;
  background-color: #120522;
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background: url(../img/15.jpg) no-repeat left top / 70% 100% #120522;
}
.customer-projects .section-content {
  width: 100%;
  display: flex;
  margin-top: 3em;
  justify-content: space-between;
  align-items: center;
}
.customer-projects .section-title {
  text-align: center;
}
.customer-projects .section-title h2 {
  font-size: 2.5em;
  font-weight: normal;
  font-family: JinBuTi;
  margin-bottom: 0;
}
.customer-projects .section-title p {
  font-size: 4em;
  color: #3D324A;
  margin-top: 0;
  margin-bottom: -1em;
}
.customer-projects .video_block {
  display: flex;
  flex-direction: column;
  gap: 2vh;
  flex: 0 0 40%;
  max-width: 40%;
  flex-grow: 0;
  border-radius: 1em;
  align-items: center;
  justify-content: center;
}
.customer-projects .video_block video {
  height: 42vh;
  max-width: 100%;
  width: auto;
}
.customer-projects .video_block .video-thumbs {
  display: flex;
  width: 100%;
  gap: 0.8em;
  margin-top: 1em;
  align-items: center;
  justify-content: center;
}
.customer-projects .video_block .video-thumbs .thumb {
  width: 13%;
  aspect-ratio: 1.4;
  overflow: hidden;
  border-radius: 6px;
  flex: 0 0 auto;
  border: 2px solid transparent;
  box-sizing: border-box;
  cursor: pointer;
  transition: width 0.3s ease;
}
.customer-projects .video_block .video-thumbs .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.customer-projects .video_block .video-thumbs .thumb.active {
  width: 15%;
  border-color: #71F362;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}
.customer-projects .project-list {
  flex: 0 0 55%;
}
.customer-projects .project-list dl {
  margin: 0;
  line-height: 3;
  display: flex;
  padding: 0.5em;
  border-bottom: 1px solid #5A5166;
  gap: 1em;
}
.customer-projects .project-list dl dt {
  flex: 0 0 40%;
  line-height: 1.5;
}
.customer-projects .project-list dl dd {
  margin: 0;
  flex: 0 0 60%;
  color: #d8d8d8;
}