.header{
             position: fixed;
            top: 0;
            left: 0;
            background-color: rgba(0, 0, 0, 0.9);
            z-index: 9999;
        }


.banner{
    width: 100%;
}
.banner img{
    width: 100%;
    height: auto;
}

.banner-content{
   position: absolute;
    top: 30%;
    right: 10%; 
    left: auto; 
    transform: translateY(-50%); 
    text-align: center;
    color: #fff;
    max-width: 500px; 
    width: 100%; 
}
.banner-content img{
    width: 250px;
    height: auto;
}
.banner-content h2{
    font-size: 50px;
    margin-bottom: 30px;
    font-weight: bold;
}
.banner-content h3{
    font-size: 30px;
    margin-bottom: 30px;
    font-weight: bold;
}
 .about-section {
        display: flex;
        align-items: center;
        justify-content: center;
  max-width: 1200px;
  margin: 50px auto;
  padding: 80px 20px;

}

.about-section h2 {
  font-size: 28px;
  margin-bottom: 30px;
}

.content-wrapper {
  display: flex;
  flex-direction: column;
  float: left;
}

.logo {
  width: 150px;
  height: auto;
  margin-bottom: 20px;
  z-index: 0;
}

.description {
  font-size: 20px;
  margin-bottom: 30px;
  max-width: 800px;
}

.learn-more {
  width: 150px;
  padding: 10px 20px;
  background-color: #0066cc;
  color: #fff;
  border: none;
  border-radius: 20px;
  cursor: pointer;
  font-size: 16px;
}

.learn-more:hover {
  background-color: #004c99;
}

/* 统一的淡入动画类*/
.fade-in-element {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.fade-in-element.active {
    opacity: 1;
    transform: translateY(0);
}
/*  banner 区域整体样式 */
.fbanner-section {
  width: 100%;
  overflow: hidden;
}



/* 内容容器样式 */
.fbanner-content {
  color: #000;
  text-align: left;
}

.fbanner-content h1 {
  font-size: 42px;
  margin-bottom: 30px;
  font-weight: bold;
  line-height: 1.4;
}

.fbanner-content p {
  font-size: 30px;
  margin-bottom: 10px;
  line-height: 1.6;
}

@media (max-width: 768px) {
  .fbanner-bg {
    height: 450px;
    padding-left: 40px;
  }

  .fbanner-content h1 {
    font-size: 32px;
  }

  .fbanner-content p {
    font-size: 16px;
  }
}

@media (max-width: 480px) {
  .fbanner-bg {
    height: 350px;
    padding-left: 20px;
  }

  .fbanner-content h1 {
    font-size: 26px;
  }

  .fbanner-content p {
    font-size: 14px;
  }
}
/* 发展历程区域整体样式 */
.fdevelopment-history {
  margin: 50px auto;
  padding-left:120px;
}


.fsection-title {
  font-size: 42px;
  margin-bottom: 30px;
  font-weight: bold;
}


.fhistory-content {
  font-size: 30px;
  text-align: left;
}

@media (max-width: 768px) {
  .fsection-title {
    font-size: 28px;
  }

  .fhistory-content {
    font-size: 16px;
  }
}

@media (max-width: 480px) {
  .fsection-title {
    font-size: 24px;
    margin-bottom: 20px;
  }

  .fhistory-content {
    font-size: 14px;
  }
}

@media (max-width: 374px) {
    .header {
        width: 100%;
        padding: 8px 15px;
    }

  
    .banner-content {
        top: 25%;
        right: 5%;
        max-width: 280px;
    }
    
    .banner-content img {
        width: 160px;
    }
    
    .banner-content h2 {
        font-size: 28px;
        margin-bottom: 15px;
    }
    
    .banner-content h3 {
        font-size: 20px;
        margin-bottom: 15px;
    }


    .about-section {
        padding: 30px 15px;
        flex-direction: column;
        text-align: center;
    }
    
    .content-wrapper {
        float: none;
        align-items: center;
        width: 100%;
    }
    
    .about-section h2 {
        font-size: 22px;
        margin-bottom: 20px;
    }
    
    .logo {
        width: 110px;
        margin-bottom: 15px;
    }
    
    .description {
        font-size: 15px;
        margin-bottom: 20px;
        max-width: 100%;
        line-height: 1.5;
    }
    
    .learn-more {
        width: 130px;
        padding: 8px 16px;
        font-size: 14px;
    }


    .fdevelopment-history {
        margin: 30px auto;
      padding-left: 5px;
    }

    .fsection-title {
        font-size: 22px;
        margin-bottom: 20px;
        text-align: center;
    }
    
    .fhistory-content {
        font-size: 14px;
        line-height: 1.6;
    }


    .fbanner-bg {
        height: 300px;
        padding-left: 20px;
         justify-content: center;
    }
    
    .fbanner-content h1 {
        font-size: 24px;
        margin-bottom: 15px;
    }
    
    .fbanner-content p {
        font-size: 14px;
    }
}


@media (min-width: 375px) and (max-width: 413px) {
    .header {
        width: 100%;
        padding: 10px 20px;
    }

   
    .banner-content {
        top: 28%;
        right: 5%;
        max-width: 320px;
    }
    
    .banner-content img {
        width: 180px;
    }
    
    .banner-content h2 {
        font-size: 32px;
        margin-bottom: 20px;
    }
    
    .banner-content h3 {
        font-size: 22px;
        margin-bottom: 20px;
    }

    .about-section {
        padding: 40px 20px;
        flex-direction: column;
        text-align: center;
    }
    
    .content-wrapper {
        float: none;
        align-items: center;
        width: 100%;
    }
    
    .about-section h2 {
        font-size: 24px;
        margin-bottom: 25px;
    }
    
    .logo {
        width: 120px;
        margin-bottom: 18px;
    }
    
    .description {
        font-size: 16px;
        margin-bottom: 25px;
        line-height: 1.6;
    }
    
    .learn-more {
        width: 140px;
        padding: 9px 18px;
        font-size: 15px;
    }


    .fdevelopment-history {
        margin: 40px auto;
       padding-left: 5px;
    }
    
   .fsection-title {
        font-size: 22px;
        margin-bottom: 20px;
        text-align: center;
    }
    
    .fhistory-content {
        font-size: 15px;
        line-height: 1.7;
    }

    .fbanner-bg {
        height: 350px;
        padding-left: 25px;
         justify-content: center;
    }
    
    .fbanner-content h1 {
        font-size: 28px;
        margin-bottom: 20px;
    }
    
    .fbanner-content p {
        font-size: 15px;
    }
}

@media (min-width: 414px) and (max-width: 767px) {

    .header {
        width: 100%;
        padding: 12px 25px;
    }


    .banner-content {
        top: 30%;
        right: 7%;
        max-width: 360px;
    }
    
    .banner-content img {
        width: 200px;
    }
    
    .banner-content h2 {
        font-size: 36px;
        margin-bottom: 25px;
    }
    
    .banner-content h3 {
        font-size: 24px;
        margin-bottom: 25px;
    }


    .about-section {
        padding: 45px 20px;
        flex-direction: column;
        text-align: center;
    }
    
    .content-wrapper {
        float: none;
        align-items: center;
        max-width: 500px;
        margin: 0 auto;
    }
    
    .about-section h2 {
        font-size: 26px;
        margin-bottom: 28px;
    }
    
    .logo {
        width: 130px;
        margin-bottom: 20px;
    }
    
    .description {
        font-size: 17px;
        margin-bottom: 28px;
        line-height: 1.6;
    }

 
    .fdevelopment-history {
        margin: 50px auto;
       padding-left: 5px;
    }
    
    .fsection-title {
        font-size: 22px;
        margin-bottom: 20px;
        text-align: center;
    }
    
    .fhistory-content {
        font-size: 16px;
        line-height: 1.7;
    }

    .fbanner-bg {
        height: 400px;
        padding-left: 30px;
         justify-content: center;
    }
    
    .fbanner-content h1 {
        font-size: 30px;
        margin-bottom: 25px;
    }
    
    .fbanner-content p {
        font-size: 16px;
    }
}


@media (min-width: 768px) and (max-width: 1023px) {
 
    .header {
        width: 100%;
        padding: 15px 30px;
    }


    .banner-content {
        top: 30%;
        right: 8%;
        max-width: 420px;
    }
    
    .banner-content img {
        width: 220px;
    }
    
    .banner-content h2 {
        font-size: 42px;
        margin-bottom: 30px;
    }
    
    .banner-content h3 {
        font-size: 28px;
        margin-bottom: 30px;
    }


     .about-section {
        padding: 50px 30px;
          flex-direction: column;
        text-align: center;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .content-wrapper {
        float: none; 
        width: 100%;
        max-width: 700px; 
    }

    .about-section h2 {
        font-size: 27px;
        margin-bottom: 30px;
    }

    .logo {
        width: 140px;
        margin-bottom: 20px;
         margin-right: 1px;
    }
    .description {
        font-size: 18px;
        margin-bottom: 30px;
        max-width: 700px;
        line-height: 1.7;
    }
.learn-more {
    margin: 10px auto;
   
}
    
    .content-wrapper {
        float: none;
        max-width: 700px;
    }
    
    .about-section h2 {
        font-size: 27px;
    }
    
    .logo {
        width: 140px;
    }
    
    .description {
        font-size: 18px;
        line-height: 1.7;
    }


    .fdevelopment-history {
        margin: 60px auto;
       padding-left: 5px;
    }
    
     .fsection-title {
        font-size: 22px;
        margin-bottom: 20px;
        text-align: center;
    }
    .fhistory-content {
        font-size: 18px;
        line-height: 1.8;
    }


    .fbanner-bg {
        height: 500px;
        padding-left: 50px;
         justify-content: center;
    }
    
    .fbanner-content h1 {
        font-size: 36px;
    }
    
    .fbanner-content p {
        font-size: 18px;
    }
}


@media (min-width: 1024px) and (max-width: 1200px) {
    .fdevelopment-history {
        padding-left: 100px; 
    }
    
    .about-section {
        padding: 50px 40px;
    }
     .fsection-title {
        font-size: 22px;
        margin-bottom: 20px;
        text-align: center;
    }
}