/* 横幅模块 */
.cmm-banner {
  position: relative;
  height: 920px;
  width: 100%;
  display: flex;
  justify-content: flex-end;
  align-items: center;
}
.cmm-banner__background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}
.cmm-banner__background img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.cmm-banner__content {
  width: 90%;
  max-width: 1400px;
  margin: 0 auto;
  box-sizing: border-box;
  display: flex;
  justify-content: center;
  gap: 60px;
}
.cmm-banner__text {
  flex: 1;
  max-width: 768px;
}
.cmm-banner__title {
  color: #ffffff;
}
.cmm-banner__subtitle {
  font-weight: 400;
  color: #ffffff;
  line-height: 30px;
  text-align: left;
  margin-top: 35px;
}
.cmm-banner__description {
  font-weight: 400;
  color: #ffffff;
  line-height: 24px;
  margin-top: 55px;
  margin-bottom: 95px;
}
.cmm-banner__media {
  width: 45%;
  max-width: 560px;
}
.cmm-banner__grid {
  width: 100%;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  background: rgba(255, 255, 255, 0.2);
  padding: 90px 0;
  gap: 10px;
}
.cmm-banner__card {
  width: 48%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  text-align: center;
}
.cmm-banner__card::before {
  position: absolute;
  content: '';
  top: 22px;
  right: -12px;
  width: 2px;
  height: 60px;
  background: #cccccc;
}
.cmm-banner__card:nth-child(2)::before,
.cmm-banner__card:nth-child(4)::before {
  display: none;
}
.cmm-banner__card-number {
  width: 109px;
  margin: 0 auto;
  font-weight: bold;
  font-size: 48px;
  color: #e0191e;
}
.cmm-banner__card-number--2,
.cmm-banner__card-number--3 {
  width: 164px !important;
}
.cmm-banner__card-text {
  text-align: center;
  color: #ffffff;
}
.cmm-banner__media-item {
  width: 100%;
  max-width: 560px;
}
.cmm-banner__button {
  margin-top: 50px;
  margin-bottom: 50px;
  width: 400px;
  background: #e0191e;
  border-radius: 4px;
}

.cmm-challenges {
  padding: 70px 0;
  background: #f8f8f8;
}
.cmm-challenges__content {
  width: 90%;
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: stretch;
}
.cmm-challenges__title {
  font-weight: bold;
  color: #333333;
  text-align: left;
}
.cmm-challenges__subtitle {
  font-weight: 400;
  font-size: 28px;
  color: #333333;
  line-height: 36px;
  margin: 20px 0;
}
.cmm-challenges__text {
  width: 47%;
}
.cmm-challenges__description {
  font-weight: 400;
  color: #333333;
  line-height: 24px;
}
.cmm-challenges__image {
  width: 47%;
  max-width: 640px;
  position: relative;
}
.cmm-challenges__image::before {
  position: absolute;
  content: '';
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  width: 400px;
  height: 400px;
  background: #e0191e;
  border-radius: 20px;
}
.cmm-challenges__image img {
  width: 100%;
  height: auto;
  object-fit: contain;
  position: absolute;
  z-index: 1;
}
.cmm-challenges__image img:nth-child(1) {
  max-width: 330px;
  bottom: 0;
  left: 0;
  z-index: 2;
}
.cmm-challenges__image img:nth-child(2) {
  max-width: 360px;
  top: 0;
  right: 0;
}
.cmm-challenges__button {
  margin-top: 50px;
  margin-bottom: 50px;
  width: 90%;
  max-width: 330px;
  background: #e0191e;
  border-radius: 4px;
}

.cmm-expertise {
  width: 100%;
  padding: 70px 0 120px;
}
.cmm-expertise__content {
  display: flex;
  margin-top: 100px;
  position: relative;
}
.cmm-expertise__title {
  width: 90%;
  max-width: 1400px;
  margin: 0 auto;
  font-weight: bold;
  color: #333333;
  text-align: center;
}
.cmm-expertise__subtitle {
  width: 90%;
  max-width: 1400px;
  margin: 0 auto;
  font-weight: 400;
  font-size: 28px;
  color: #333333;
  line-height: 36px;
  text-align: center;
  margin-top: 20px;
}
.cmm-expertise__left {
  width: 50%;
  background: #e0191e;
  display: flex;
  justify-content: flex-end;
}
.cmm-expertise__list {
  width: 80%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 50px;
  margin-top: 30px;
  margin-bottom: 30px;
  padding-right: 70px;
  box-sizing: border-box;
}
.cmm-expertise__item {
  display: flex;
  gap: 45px;
}
.cmm-expertise__item-icon {
  width: 100px;
  flex-shrink: 0;
}
.cmm-expertise__item-icon img {
  width: 100%;
  height: auto;
  object-fit: contain;
}
.cmm-expertise__item-text {
  flex: 1;
}
.cmm-expertise__item-title {
  font-weight: bold;
  font-size: 18px;
  color: #ffffff;
  line-height: 30px;
}
.cmm-expertise__item-desc {
  font-weight: 400;
  color: #ffffff;
  line-height: 24px;
  margin-top: 8px;
}
.cmm-expertise__right {
  width: 50%;
}
.cmm-expertise__background {
  width: 100%;
  height: 100%;
  margin-top: -45px;
}
.cmm-expertise__background img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.cmm-expertise__card {
  width: 740px;
  height: 520px;
  background: #ffffff;
  box-shadow: 0px 0px 10px 0px rgba(35, 24, 21, 0.15);
  padding: 30px;
  box-sizing: border-box;
  position: absolute;
  bottom: -120px;
  right: 14%;
  z-index: 1;
}
.cmm-expertise__card-title {
  font-weight: 400;
  color: #333333;
}
.cmm-expertise__card-list {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  margin-top: 30px;
}
.cmm-expertise__card-item {
  width: calc(100% / 2 - 25px);
  font-weight: 400;
  color: #333333;
  padding: 8px 20px;
  box-sizing: border-box;
  background: #f8f8f8;
  border-radius: 10px;
  font-weight: 400;
  font-size: 20px;
  color: #004eff;
  text-align: center;
}
.cmm-expertise__card-item:hover {
  background: #004eff;
  color: #f8f8f8;
}

.cmm-process {
  width: 100%;
  padding: 70px 0;
  position: relative;
}
.cmm-process__content {
  width: 90%;
  max-width: 1400px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.cmm-process__title {
  font-weight: bold;
  color: #333333;
  text-align: center;
}
.cmm-process__subtitle {
  font-weight: 400;
  font-size: 28px;
  color: #333333;
  line-height: 36px;
  text-align: center;
  margin-top: 20px;
}
.cmm-process__list-container {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-top: 50px;
}
.cmm-process__list {
  width: 26%;
  display: flex;
  flex-direction: column-reverse;
  align-items: stretch;
  gap: 20px;
}
.cmm-process__list:nth-child(3) {
  flex-direction: column;
}
.cmm-process__item {
  width: 100%;
  display: flex;
  flex-direction: column;
}
.cmm-process__item.cmm-process__item--image {
  padding: 0;
  background: transparent;
}
.cmm-process__item-icon {
  width: 100px;
  flex-shrink: 0;
}
.cmm-process__item-icon img {
  width: 100%;
  height: auto;
  object-fit: contain;
}
.cmm-process__item-text {
  flex: 1;
}
.cmm-process__item-title {
  font-weight: bold;
  font-size: 18px;
  color: #333333;
  margin-bottom: 10px;
}
.cmm-process__item-desc {
  font-weight: 400;
  color: #333333;
  line-height: 24px;
}
.cmm-process__item-image {
  width: 100%;
}
.cmm-process__item-image img {
  width: 100%;
  height: auto;
  object-fit: contain;
}
.cmm-process__image {
  flex: 1;
  max-width: 600px;
}
.cmm-process__image img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

.cmm-choose {
  width: 100%;
  padding: 70px 0;
  position: relative;
}
.cmm-choose__background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.cmm-choose__background img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.cmm-choose__content {
  width: 90%;
  max-width: 1400px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.cmm-choose__title {
  font-weight: bold;
  color: #ffffff;
  text-align: center;
}
.cmm-choose__subtitle {
  font-weight: 400;
  font-size: 28px;
  color: #ffffff;
  line-height: 36px;
  text-align: center;
  margin-top: 20px;
}
.cmm-choose__description {
  max-width: 1162px;
  margin: 0 auto;
  font-weight: 400;
  color: #ffffff;
  line-height: 24px;
  text-align: center;
  margin-top: 10px;
}
.cmm-choose__list-container {
  display: flex;
  justify-content: center;
  gap: 50px;
}
.cmm-choose__list {
  width: 42%;
  display: flex;
  flex-direction: column-reverse;
  align-items: stretch;
  gap: 20px;
  margin: 35px 0 40px;
}
.cmm-choose__list:nth-child(2) {
  flex-direction: column;
}
.cmm-choose__item {
  width: 100%;
  background: #ffffff;
  border-radius: 20px;
  display: flex;
  align-items: center;
  gap: 35px;
  padding: 25px 30px;
  box-sizing: border-box;
}
.cmm-choose__list:nth-child(1) .cmm-choose__item:nth-child(3) {
  margin-top: 45px;
}
.cmm-choose__item.cmm-choose__item--image {
  padding: 0;
  background: transparent;
}
.cmm-choose__item-icon {
  width: 64px;
  flex-shrink: 0;
}
.cmm-choose__item-icon img {
  width: 100%;
  height: auto;
  object-fit: contain;
}
.cmm-choose__item-text {
  flex: 1;
}
.cmm-choose__item-title {
  font-weight: bold;
  font-size: 18px;
  color: #333333;
  margin-bottom: 20px;
}
.cmm-choose__item-desc {
  font-weight: 400;
  color: #333333;
  line-height: 24px;
}
.cmm-choose__item-image {
  width: 100%;
}
.cmm-choose__item-image img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

.cmm-precision {
  padding: 160px 0;
  position: relative;
  overflow: hidden;
}
.cmm-precision::before {
  content: '';
  position: absolute;
  top: 50%;
  left: -20px;
  width: 600px;
  height: 777px;
  background: #e0191e;
  border-radius: 100px;
  transform: translateY(-50%) rotate(50deg);
}
.cmm-precision__content {
  width: 90%;
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  z-index: 1;
}
.cmm-precision__text {
  width: 49%;
}
.cmm-precision__title {
  font-weight: bold;
  color: #333333;
  text-align: center;
}
.cmm-precision__subtitle {
  font-weight: 400;
  font-size: 28px;
  color: #333333;
  line-height: 36px;
  text-align: center;
}
.cmm-precision__info {
  font-weight: 400;
  color: #333333;
  text-align: center;
}
.cmm-precision__description {
  font-weight: 400;
  color: #333333;
  line-height: 30px;
  text-align: center;
  margin-top: 50px;
}
.cmm-precision__image {
  width: 48%;
  max-width: 550px;
}
.cmm-precision__image img {
  width: 100%;
  display: block;
}
.cmm-precision__button {
  width: 90%;
  max-width: 470px;
  background: #e0191e;
  border-radius: 4px;
  margin: 0 auto;
  margin-top: 50px;
}

.cmm-production {
  position: relative;
  background: #121212;
}
.cmm-production__background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}
.cmm-production__background img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.cmm-production__content {
  display: flex;
}
.cmm-production__image {
  width: 48%;
  max-width: 1000px;
}
.cmm-production__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.cmm-production__text {
  flex: 1;
  max-width: 660px;
  color: #fff;
  padding: 60px 50px 80px;
  box-sizing: border-box;
}
.cmm-production__title {
  margin-bottom: 35px;
}
.cmm-production__list {
  display: flex;
  flex-direction: column;
  gap: 40px;
  margin-bottom: 40px;
}
.cmm-production__item {
  width: 100%;
  max-width: 460px;
  margin: 0 auto;
  padding: 12px 30px;
  box-sizing: border-box;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 10px;
  font-weight: 400;
  font-size: 20px;
  color: #004eff;
  text-align: left;
}
.cmm-production__button {
  width: 100%;
  max-width: 460px;
  margin: 0 auto;
  background: #e0191e;
  color: #fff;
  padding: 14px 20px;
  border-radius: 4px;
  text-align: center;
}

/* 响应式 */
@media screen and (max-width: 760px) {
  .cmm-banner {
    height: auto;
    padding: 50px 0;
  }
  .cmm-banner__content {
    flex-direction: column;
    gap: 30px;
  }
  .cmm-banner__media {
    width: 100%;
  }
  .cmm-banner__grid {
    padding: 30px 0;
  }
  .cmm-banner__card-number {
    font-size: 36px;
  }
  .cmm-banner__description {
    margin-top: 25px;
    margin-bottom: 35px;
  }
  .cmm-banner__button {
    width: auto;
    margin-top: 20px;
    margin-bottom: 20px;
  }

  .cmm-challenges__content {
    flex-direction: column;
    gap: 30px;
  }
  .cmm-challenges__image {
    width: 100%;
    display: flex;
    gap: 10px;
  }
  .cmm-challenges__image::before {
    display: none;
  }
  .cmm-challenges__image img {
    width: 48%;
    position: static;
  }
  .cmm-challenges__text {
    width: 100%;
  }

  .cmm-expertise {
    padding-bottom: 0px;
  }
  .cmm-expertise__content {
    flex-direction: column;
    margin-top: 40px;
  }
  .cmm-expertise__left {
    width: 100%;
  }
  .cmm-expertise__list {
    width: 100%;
    padding: 0px;
    margin-top: 40px;
    margin-bottom: 40px;
  }
  .cmm-expertise__item {
    width: 90%;
    margin: 0 auto;
    gap: 20px;
  }
  .cmm-expertise__item-icon {
    width: 70px;
  }
  .cmm-expertise__right {
    width: 100%;
  }
  .cmm-expertise__background {
    height: auto;
    margin: 0;
  }
  .cmm-expertise__background img {
    height: auto;
    object-fit: contain;
  }
  .cmm-expertise__card {
    position: static;
    width: 90%;
    max-width: 740px;
    height: auto;
    margin: 0 auto;
    margin-top: 30px;
    padding-bottom: 45px;
  }

  .cmm-process__list-container {
    flex-direction: column;
    gap: 30px;
  }
  .cmm-process__list {
    width: 100%;
    flex-direction: row-reverse;
    flex-wrap: wrap;
    justify-content: center;
  }
  .cmm-process__list:nth-child(3) {
    flex-direction: row;
  }
  .cmm-process__item.cmm-process__item--image {
    width: 100%;
  }

  .cmm-choose__list-container {
    flex-direction: column;
  }
  .cmm-choose__list {
    width: 100%;
  }
  .cmm-choose__item-icon {
    width: 45px;
  }

  .cmm-precision {
    padding: 60px 0;
  }
  .cmm-precision::before {
    display: none;
  }
  .cmm-precision__content {
    flex-direction: column;
    gap: 30px;
  }
  .cmm-precision__image {
    width: 100%;
  }
  .cmm-precision__text {
    width: 100%;
  }
  .cmm-expertise__card-list {
    flex-direction: column;
    gap: 20px;
  }
  .cmm-expertise__card-item {
    width: 100%;
  }

  .cmm-process__item {
    width: 100%;
    min-width: auto;
    max-width: 360px;
  }

  .cmm-production__content {
    flex-direction: column;
    align-items: flex-start;
  }
  .cmm-production__image {
    width: 100%;
  }
  .cmm-production__text {
    width: 100%;
    padding: 30px 20px 40px;
  }
}

@media screen and (min-width: 760px) and (max-width: 1020px) {
  .cmm-banner__content {
    flex-direction: column;
    gap: 30px;
  }
  .cmm-banner__media {
    width: 100%;
  }
  .cmm-banner__card-number {
    font-size: 36px;
  }

  .cmm-challenges__content {
    flex-direction: column;
    gap: 30px;
  }
  .cmm-challenges__image {
    width: 100%;
    display: flex;
    gap: 10px;
  }
  .cmm-challenges__image::before {
    display: none;
  }
  .cmm-challenges__image img {
    width: 48%;
    position: static;
  }
  .cmm-challenges__text {
    width: 100%;
  }

  .cmm-expertise {
    padding-bottom: 0px;
  }
  .cmm-expertise__content {
    flex-direction: column;
    margin-top: 40px;
  }
  .cmm-expertise__left {
    width: 100%;
  }
  .cmm-expertise__list {
    width: 100%;
    padding: 0px;
    margin-top: 40px;
    margin-bottom: 40px;
  }
  .cmm-expertise__item {
    width: 90%;
    margin: 0 auto;
  }
  .cmm-expertise__right {
    width: 100%;
  }
  .cmm-expertise__background {
    height: auto;
    margin: 0;
  }
  .cmm-expertise__background img {
    height: auto;
    object-fit: contain;
  }
  .cmm-expertise__card {
    position: static;
    width: 90%;
    max-width: 740px;
    height: auto;
    margin: 0 auto;
    margin-top: 30px;
    padding-bottom: 45px;
  }

  .cmm-process__list-container {
    flex-direction: column;
    gap: 30px;
  }
  .cmm-process__list {
    width: 100%;
    flex-direction: row-reverse;
    flex-wrap: wrap;
    justify-content: center;
  }
  .cmm-process__list:nth-child(3) {
    flex-direction: row;
  }
  .cmm-process__item.cmm-process__item--image {
    width: 100%;
  }

  .cmm-choose__list-container {
    flex-direction: column;
  }
  .cmm-choose__list {
    width: 100%;
  }

  .cmm-precision {
    padding: 60px 0;
  }
  .cmm-precision::before {
    display: none;
  }
  .cmm-precision__content {
    flex-direction: column;
    gap: 30px;
  }
  .cmm-precision__image {
    width: 100%;
  }
  .cmm-precision__text {
    width: 100%;
  }

  .cmm-process__item {
    width: calc(100% / 2 - 20px);
  }

  .cmm-production__content {
    flex-direction: column;
    align-items: flex-start;
  }
  .cmm-production__image {
    width: 100%;
  }
}

@media screen and (min-width: 1020px) and (max-width: 1350px) {
  .cmm-banner__card-number {
    font-size: 36px;
  }
}

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