/* 横幅模块 */
.stm-banner {
  position: relative;
  height: 800px;
  width: 100%;
  display: flex;
  justify-content: flex-end;
  align-items: center;
}
.stm-banner__background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}
.stm-banner__background img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.stm-banner__content {
  width: 90%;
  max-width: 1400px;
  margin: 0 auto;
  box-sizing: border-box;
  display: flex;
  justify-content: space-between;
  gap: 60px;
}
.stm-banner__text {
  flex: 1;
  max-width: 995px;
}
.stm-banner__title {
  color: #ffffff;
}
.stm-banner__subtitle {
  font-weight: 400;
  font-size: 30px;
  color: #ffffff;
  line-height: 48px;
  text-align: left;
  margin-top: 35px;
}
.stm-banner__description {
  font-weight: 400;
  font-size: 22px;
  color: #ffffff;
  line-height: 36px;
  margin-top: 40px;
}
.stm-banner__button {
  margin-top: 40px;
  width: 360px;
  background: #e0191e;
}

.stm-advantage {
  padding: 70px 0 70px;
  width: 90%;
  margin: 0 auto;
}
.stm-advantage__title {
  font-weight: bold;
  color: #333333;
  text-align: center;
  margin-bottom: 40px;
}
.stm-advantage__content {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  gap: 60px;
}
.stm-advantage__image {
  width: 48%;
  max-width: 700px;
}
.stm-advantage__image img {
  width: 100%;
  height: auto;
  object-fit: contain;
}
.stm-advantage__list {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 30px;
}
.stm-advantage__item {
  width: 100%;
}
.stm-advantage__item-title {
  width: 100%;
  max-width: 450px;
  background: #eeeeee;
  border-radius: 10px;
  padding: 8px 20px;
  box-sizing: border-box;
  font-weight: 400;
  font-size: 22px;
  color: #333333;
  text-align: center;
  cursor: pointer;
}
.stm-advantage__item-title:hover,
.stm-advantage__item.is-active .stm-advantage__item-title {
  background: #e0191e;
  color: #ffffff;
}
.stm-advantage__item-desc {
  width: 100%;
  font-weight: 400;
  color: #333333;
  line-height: 30px;
  padding: 25px 20px;
  box-sizing: border-box;
  display: none;
}
.stm-advantage__item.is-active .stm-advantage__item-desc {
  display: block;
}

.stm-process {
  padding: 70px 0 35px;
  position: relative;
}
.stm-process__background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.stm-process__background img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.stm-process__content {
  width: 90%;
  max-width: 1400px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.stm-process__title {
  font-weight: bold;
  color: #ffffff;
  text-align: center;
  margin-bottom: 40px;
}
.stm-process__list {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 20px;
}
.stm-process__item {
  width: 100%;
  font-weight: 400;
  color: #ffffff;
  line-height: 30px;
  background: rgba(0, 0, 0, 0.5);
  padding: 35px 20px 35px;
  box-sizing: border-box;
  display: flex;
  gap: 20px;
}
.stm-process__item-left {
  width: 120px;
  height: 130px;
  background: #e0191e;
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 20px;
  flex-shrink: 0;
  text-align: center;
}
.stm-process__item-left-title {
  font-weight: 300;
  font-size: 30px;
  color: #ffffff;
}
.stm-process__item-left-number {
  font-weight: 500;
  font-size: 40px;
  color: #ffffff;
}
.stm-process__item-title {
  font-weight: 500;
  color: #fff;
  margin-bottom: 20px;
}

.stm-make {
  width: 100%;
  padding: 70px 0 0px;
}
.stm-make__content {
  width: 90%;
  max-width: 1400px;
  margin: 0 auto;
}
.stm-make__title {
  font-weight: bold;
  color: #333333;
}
.stm-make__subtitle {
  font-weight: 400;
  font-size: 28px;
  color: #333333;
  line-height: 36px;
  text-align: center;
  margin-top: 10px;
}
.stm-make__description {
  font-weight: 400;
  color: #333333;
  line-height: 24px;
  margin-top: 40px;
  margin-bottom: 25px;
}
.stm-make__list {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 20px;
}
.stm-make__item {
  width: calc(100% / 2 - 10px);
  position: relative;
  background: #fafafa;
  padding: 35px 25px 30px;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  gap: 25px;
}
.stm-make__item:last-child {
  width: 100%;
}
.stm-make__item-icon {
  width: 100px;
  flex-shrink: 0;
}
.stm-make__item-icon img {
  width: 100%;
  height: auto;
  object-fit: contain;
}
.stm-make__item-title {
  font-weight: 500;
  color: #333333;
  margin-bottom: 10px;
}
.stm-make__item-desc {
  font-weight: 400;
  color: #333333;
  line-height: 24px;
}

.stm-elevate {
  padding: 70px 0 0;
  width: 90%;
  margin: 0 auto;
}
.stm-elevate__title {
  font-weight: bold;
  color: #333333;
  text-align: center;
}
.stm-elevate__subtitle {
  font-weight: 400;
  font-size: 26px;
  color: #333333;
  text-align: center;
}
.stm-elevate__content {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-top: 40px;
}
.stm-elevate__image {
  width: 42%;
  max-width: 600px;
}
.stm-elevate__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.stm-elevate__text {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding-top: 20px;
  box-sizing: border-box;
}
.stm-elevate__description {
  font-weight: 400;
  color: #333333;
  line-height: 36px;
}
.stm-elevate__button {
  width: 100%;
  max-width: 560px;
  background: #e0191e;
  margin-top: 20px;
}

.stm-solutions {
  padding: 40px 0 50px;
}
.stm-solutions__content {
  width: 90%;
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  gap: 40px;
}
.stm-solutions__image {
  width: 42%;
  max-width: 600px;
}
.stm-solutions__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.stm-solutions__text {
  flex: 1;
  padding: 12px 0;
  box-sizing: border-box;
}
.stm-solutions__text .cnc-title {
  justify-content: flex-start;
}
.stm-solutions__title {
  font-weight: bold;
  color: #333333;
  text-align: left;
}
.stm-solutions__description {
  font-weight: 400;
  color: #333333;
  line-height: 30px;
  text-align: left;
  margin-top: 20px;
}
.stm-solutions__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 20px;
}
.stm-solutions__item {
  width: 100%;
  padding: 15px 25px;
  box-sizing: border-box;
  background: #fafafa;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 400;
  font-size: 22px;
  color: #cc0033;
}
.stm-solutions__item:hover {
  background: #e0191e;
  color: #fefbfb;
}
.stm-solutions__item-icon {
  width: 28px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
}
.stm-solutions__item-icon img {
  width: 100%;
  height: auto;
  object-fit: contain;
}
.stm-solutions__item:hover .stm-solutions__item-icon {
  display: none;
}
.stm-solutions__item-icon-hover {
  display: none;
}
.stm-solutions__item:hover .stm-solutions__item-icon-hover {
  display: flex;
}

@media screen and (max-width: 760px) {
  .stm-banner {
    height: auto;
    padding: 50px 0;
  }
  .stm-banner__button {
    width: 100%;
    max-width: 360px;
  }

  .stm-advantage__content {
    flex-direction: column;
    gap: 20px;
  }
  .stm-advantage__image {
    width: 100%;
  }

  .stm-process__item {
    flex-direction: column;
    gap: 20px;
  }

  .stm-make__item {
    width: 100%;
  }

  .stm-elevate__content {
    flex-direction: column;
    gap: 20px;
  }
  .stm-elevate__image {
    width: 100%;
  }

  .stm-solutions__content {
    flex-direction: column;
    gap: 20px;
  }
  .stm-solutions__image {
    width: 100%;
  }
}

@media screen and (min-width: 760px) and (max-width: 1020px) {
  .stm-advantage__content {
    flex-direction: column;
    gap: 20px;
  }
  .stm-advantage__image {
    width: 100%;
  }

  .stm-make__item {
    width: 100%;
  }

  .stm-elevate__content {
    flex-direction: column;
    gap: 20px;
  }
  .stm-elevate__image {
    width: 100%;
  }

  .stm-solutions__content {
    flex-direction: column;
    gap: 20px;
  }
  .stm-solutions__image {
    width: 100%;
  }
}

@media screen and (min-width: 1020px) and (max-width: 1350px) {
}

@media screen and (min-width: 1350px) {
}