* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* 工具和文档区域 */
.tools-docs-section {
  padding: 80px 0;
  background: #357AD5;
}

.tools-docs-section .container {
  width: 100%;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .tools-docs-section .container {
    width: 750px;
  }
}

@media (min-width: 992px) {
  .tools-docs-section .container {
    width: 970px;
  }
}

@media (min-width: 1200px) {
  .tools-docs-section .container{
    width: 1170px;
  }
}

.tools-docs-wrapper {
  display: flex;
  gap: 0;
}

.tools-section-wrapper,
.docs-section-wrapper {
  width: 50%;
  padding-left: 15px;
  padding-right: 15px;
}

.docs-section{
  padding-right: 70px;
}

.tools-section {
  padding-right: 70px;
}

.tools-title,
.docs-title {
  font-size: 24px;
  color: #fff;
  margin: 10px 0 12px;
}

.tools-description,
.docs-description {
  font-size: 14px;
  color: #fff;
  margin: 0 0 21px;
  line-height: 24px;
}

.tools-logos-row {
  display: flex;
  margin-bottom: 44px;
  align-items: center;
}

.tool-logo {
  display: flex;
}

.tool-logo img {
  object-fit: contain;
}

.tool-img-1 {
  width: 86px;
  height: 37px;
  margin-right: 70px;
}

.tool-img-2 {
  width: 92px;
  height: 36px;
}

.tool-img-3 {
  width: 112px;
  height: 26px;
  margin-right: 34px;
}

.tool-img-4 {
  width: 142px;
  height: 31px;
}

.docs-cards {
  display: flex;
  flex-wrap: wrap;
}

.doc-card {
  width:220px;
  display: flex;
  align-items: center;
  padding: 14px 0 14px 14px;
  margin:0  20px 12px 0;
  border: 2px solid #fff;
  border-radius: 8px;
  background: transparent;
}

.doc-icon {
  width: 32px;
  height: 25px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 20px;
}

.doc-icon img {
  width: 32px;
  height: 25px;
  object-fit: contain;
  filter: brightness(0) invert(1);
}

.doc-name {
  font-size: 16px;
  color: #fff;
}

/* 工具和文档区域响应式 */
@media (max-width: 991px) {
  .tools-docs-wrapper {
    flex-direction: column;
  }

  .tools-section-wrapper,
  .docs-section-wrapper {
    width: 100%;
  }
}

@media only screen and (max-width: 468px){
  .tools-docs-section{
    padding: 40px 0;
  }
  .tools-section,.docs-section{
    padding-right: 0px;
  }
  .tools-title,.docs-title{
    font-size: 20px;
    text-align: center;
  }
  .doc-card{
    padding: 18px 20px;
    margin-right: 10px;
    margin-left: 10px;
    margin-bottom: 12px;
    text-align: left;
    width: 100%;
    font-size: 14px;
  }
}


/* 持续迭代管理区域 */
.iterative-section {
  padding: 80px 0 50px;
  background: #F7F8FB;
}

.iterative-header {
  text-align: center;
  margin-bottom: 40px;
}

.iterative-main-title {
  font-size: 34px;
  color: #333;
  margin: 20px 0;
}

.iterative-subtitle {
  font-size: 16px;
  color: #5E5E5E;
  margin-bottom: 40px;
}

.iterative-section .container {
  max-width: 1170px;
  width: 100%;
  margin: 0 auto;
  padding: 0 15px;
}

.iterative-content {
  display: flex;
  justify-content: center;
  align-items: center;
}

.iterative-image {
  display: block;
  margin: 0 auto;
}

.iterative-image-desktop {
  width: 906px;
  height: 370px;
  object-fit: contain;
}

.iterative-image-mobile {
  display: none;
}

@media (max-width: 991px) {
  /* 修改图片大小，界面更美观 */
  .iterative-content img{
    width:100%;
    height: auto;
  }
}

@media (max-width: 768px) {
  /* 修改图片大小，界面更美观 */
  .iterative-content img{
    width:100%;
    height: auto;
  }
}

/* 小屏响应式 */
@media only screen and (max-width: 468px) {
  .iterative-image-desktop {
    display: none;
  }

  .iterative-image-mobile {
    display: block;
    width: 100%;
    height: auto;
  }

  .iterative-main-title{
    font-size: 24px;
  }
  .iterative-subtitle{
    font-size: 14px;
    margin-bottom: 20px;
    padding:0 15px;
  }
  .iterative-header{
    margin-bottom: 0px;
  }

  .iterative-section {
    padding: 40px 0 20px;
  }
  .iterative-content{
    padding:0 15px;
    margin-bottom: 20px;
  }
}