/* 模式介绍页面样式 */
/* 基础样式重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.intro-content {
  padding: 80px 0 50px;
  background: #F7F8FB;
}

.intro-content .container{
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}


.intro-main-title {
  font-size: 36px;
  font-weight: 700;
  color: #1a1a1a;
  text-align: center;
  margin: 20px 0 10px;
  line-height: 1.4;
}

.intro-description {
  font-size: 16px;
  color: #555;
  text-align: center;
  margin: 20px 0 60px;
  line-height: 1.6;
}

.intro-bottom {
  display: flex;
  align-items: flex-start;
}

.intro-left {
  flex: 1;
  width: 50%;
}

.intro-chart {
  width: 100%;
  text-align: center;
}

.intro-chart-img {
  width: 393px;
  height: 224px;
  object-fit: contain;
}
@media only screen and (max-width: 468px) {
  .intro-chart-img {
    width: 280px;
    height: auto;
  }
}
.intro-right {
  width: 50%;
  display: flex;
  flex-direction: row;
}

.advantage-list {
  width: 50%;
  padding-left: 15px;
  padding-right: 15px;
}

.advantage-list h3 {
  font-size: 24px;
  font-weight: 700;
  color: #333;
  margin: 10px 0 43px;
  line-height: 1.4;
  position: relative;
}

.advantage-list h3:before {
    content: ' ';
    position: absolute;
    top: 35px;
    width: 48px;
    height: 3px;
    background-color: #357AD5;
}

.advantage-list ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.advantage-list li {
  display: flex;
  align-items: center;
  margin-bottom: 10px;
  font-size: 16px;
  color: #777777;
  line-height: 1.6;
}

.number-icon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #357AD5;
  opacity: 0.5;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  margin-right: 16px;
  flex-shrink: 0;
}

@media (min-width: 768px) {
  .intro-bottom {
    width: 750px;
  }
}

@media (min-width: 992px) {
  .intro-bottom{
    width: 970px;
  }
}

@media (min-width: 1200px) {
  .intro-bottom {
    width: 1170px;
  }
}

/* 响应式 */
@media (max-width: 992px) {
  .intro-bottom{
    flex-direction: column;
  }

  .intro-left,
  .intro-right {
    flex: 0 0 100%;
    width: 100%;
  }

  .intro-main-title {
    font-size: 28px;
  }
}

@media (max-width: 768px) {
  .intro-bottom {
    width:100%;
  }
}

@media only screen and (max-width: 468px){
  .intro-content {
    padding:40px 0 20px;
  }
  .intro-main-title{
    font-size: 24px;
    margin:20px 0 10px;
    font-weight: 500;
    padding:0 15px;
  }
  .intro-description{
    font-size: 14px;
    margin:10px 0 20px;
    padding:0 15px;
  }
  .intro-left{
    margin-bottom: 30px;
  }
  .advantage-list h3{
    font-size:18px;
    margin: 10px 0 5px;
  }
  .advantage-list h3:before {
    top: 28px;
  }
  .intro-right{
    padding:0 15px;
  }
  .intro-right .advantage-list ul{
    padding:0;
  }
  .advantage-list ul li{
    margin-bottom: 20px;
  }
  .number-icon{
    margin-right: 5px;
  }
}

/* 特性部分样式 */
.feature-section {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
  .advantage-list ul{
    padding:0 15px;
  }
  .advantage-list li{
    font-size: 14px;
    margin-bottom: 10px;
  }
  .number-icon{
    width:16px;
    height:16px;
    font-size: 12px;
  }
  .number-icon img{
    width:16px;
    height:16px;
  }

.feature-section {
  padding: 80px 0 50px;
  background: #fff;
}
.feature-container{
  display: flex;
}
@media (min-width: 768px) {
  .feature-container {
    width: 750px;
  }
}

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

@media (max-width: 992px) {
  .feature-container {
    flex-direction: column;
  }
}

@media (min-width: 1200px) {
  .feature-container {
    width: 1170px;
  }
}
.feature-title {
  font-size: 36px;
  font-weight: 700;
  color: #1a1a1a;
  text-align: center;
  margin: 0 0 20px;
  line-height: 1.4;
}

.feature-description {
  font-size: 16px;
  color: #555;
  text-align: center;
  margin: 0 0 60px;
  line-height: 1.6;
  margin-left: auto;
  margin-right: auto;
}

.feature-grid {
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  width: 50%;
  justify-content: space-between;
  padding:0 15px;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 24px;
}
.feature-item:not(:last-child) {
  margin-bottom: 60px;
}
.feature-icon {
  flex-shrink: 0;
}

.feature-icon img {
  width: 60px;
  height: 60px;
  display: block;
}

.feature-content {
  flex: 1;
}

.feature-content h4 {
  font-size: 24px;
  font-weight: 700;
  color: #333;
  margin: 10px 0 16px;
}

.feature-content p {
  font-size: 16px;
  color: #777777;
  margin-bottom:10px;
  line-height: 22px;
}

/* 特性部分响应式 */
@media (max-width: 991px) {
  .feature-item {
    width: 100%;
  }
  
  .feature-title {
    font-size: 28px;
  }
  /* 小屏幕时占满整行 */
  .feature-grid {
    flex: 0 0 100%;
    width: 100%;
  }

  .feature-item:last-child{
    margin-bottom: 60px;
  }
}

@media only screen and (max-width: 468px){
  .feature-container{
    gap:0;
  }
  .feature-section{
    padding:40px 0 20px;
  }
  .feature-title{
    font-size: 24px;
    margin:20px 0 10px;
    padding:0 15px;
  }
  .feature-description{
    font-size: 14px;
    margin-bottom: 20px;
    padding:0 15px;
  }
  .feature-grid .feature-item{
    gap:15px;
    margin-bottom: 30px;
    padding-left: 20px;
  }
  .feature-icon img{
    width:40px;
    height:40px;
  }
  .feature-content h4{
    font-size: 16px;
    margin:10px 0 5px;
  }
  .feature-content p{
    font-size: 14px;
  }
}