/************************************** header **************************************/
header {
  background-color: #000;
}

/******************************** material banner ********************************/
.banner2 {
  display: flex;
  position: relative;
  aspect-ratio: 3/1;
  background: url('../img/resin-banner.webp') no-repeat center/cover;
  margin-bottom: clamp(60px, 8vw, 100px);
}
/* banner2的黑色半透明遮罩 */
.overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.3);
}
.banner2-title {
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: end;
  width: 100%;
  color: #fff;
  padding-right: clamp(10px, 2.4vw, 80px);
  z-index: 1;
}
.banner2-title h1 {
  font-size: clamp(1.75rem, 1.464rem + 1.429vw, 3.75rem);
}
.banner2-title p {
  font-size: clamp(13px, 1.2vw, 22px);
  padding-top: 20px;
}
/* 宽屏 */
@media screen and (min-width: 1024px) {
  .banner2-title {
    padding-left: 65%;
  }
}
/* 窄屏 */
@media screen and (max-width: 1023px) {
  .banner2 {
    aspect-ratio: 5/3;
  }
  .banner2-title {
    width: 100%;
    text-align: center;
  }
}

/********************************** what we do **********************************/
.what-we-do {
  margin-bottom: clamp(60px, 8vw, 100px);
}
.what-we-do-title {
  max-width: 960px;
  text-align: center;
  padding: 0 20px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 40px;
}
.what-we-do-title h2 {
  font-size: clamp(28px, 3vw, 48px);
  padding-bottom: 20px;
}
.what-we-do-title p {
  font-size: clamp(13px, 1.2vw, 16px);
}
.what-we-do-content1 .what-we-do-content-left {
  background: url('../img/resin-what-we-do-content-01.webp') no-repeat center/cover;
}
.what-we-do-content2 .what-we-do-content-left {
  background: url('../img/resin-what-we-do-content-02.webp') no-repeat center/cover;
  order: 2;
}
.what-we-do-content3 .what-we-do-content-left {
  background: url('../img/resin-what-we-do-content-03.webp') no-repeat center/cover;
}
.what-we-do-content4 .what-we-do-content-left {
  background: url('../img/resin-what-we-do-content-04.webp') no-repeat center/cover;
  order: 2;
}
.what-we-do-content5 .what-we-do-content-left {
  background: url('../img/resin-what-we-do-content-05.webp') no-repeat center/cover;
}
.what-we-do-content6 .what-we-do-content-left {
  background: url('../img/resin-what-we-do-content-06.webp') no-repeat center/cover;
  order: 2;
}
.what-we-do-content-right {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 0 30px;
}
.what-we-do-content-subtitle {
  display: block;
  color: #000;
  font-size: clamp(20px, 2.5vw, 32px);
  line-height: 2;
  font-weight: 700;
  max-width: 800px;
}
.what-we-do-content-right p {
  max-width: 800px;
  font-size: clamp(13px, 1.2vw, 16px);
}
/* 宽屏 */
@media screen and (min-width: 768px) {
  .what-we-do-content {
    display: flex;
  }
  .what-we-do-content-left {
    width: 50%;
    aspect-ratio: 5/3;
  }
  .what-we-do-content-right {
    width: 50%;
  }
}
/* 窄屏 */
@media screen and (max-width: 767px) {
  .what-we-do-content {
    display: block;
    margin: 20px;
    background-color: #eeeeeec5;
  }
  .what-we-do-content-left {
    width: 100%;
    aspect-ratio: 2/1;
  }
  .what-we-do-content-right {
    width: 100%;
    padding: 48px 20px;
  }
}

/********************************** type of resin **********************************/
.type-of-material {
  margin-bottom: clamp(60px, 8vw, 100px);
}
.type-of-material-banner {
  width: 100%;
  background: url('../img/type-of-resin-banner.png') no-repeat center/cover;
}
.type-of-material-banner h2 {
  max-width: 960px;
  font-size: clamp(28px, 3vw, 48px);
  padding: clamp(20px, 3vw, 60px) 20px;
  margin: 0 auto;
}
.type-of-material-content {
  max-width: 960px;
  padding: clamp(40px, 3vw, 60px) 20px;
  margin: 0 auto;
}
.type-of-material-content li {
  display: flex;
  gap: 10px;
  padding-bottom: 20px;
}