/* 重置样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
h1, h2, h3, h4, h5, h6 {
  font-family: "思源黑体", "SimHei", sans-serif;
  font-weight: 600;
  letter-spacing: 2px;
}

/* 顶部横幅 */
.banner-section {
  width: 100%;
  height: 502px;
}

/* 产品展示 */
.product-showcase-container {
  width: 1920px;
  max-width: 100%;
  margin: 0 auto;
  background-color: #0066cc;
}

.product-showcase-content-container {
  width: 1200px;
  max-width: 100%;
  margin: 0 auto;
  padding: 0 20px;
}
.product-showcase-content-container h2 {
  padding-top: 20px;
  color: #FFF;
  font-size: 40px;
  letter-spacing: 2px;
}

.product-showcase-content-container p {
  margin-bottom: 10px;
  color: #FFF;
  letter-spacing: 2px;
  font-size: 18px;
}

.product-showcase-content-container .title-line {
  width: 100%;
  height: 2px;
  background-color: white;
  margin: 0 auto;
  margin: 0 0 30px 0;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  width: 1200px;
  max-width: 100%;
  margin: 0 auto;
  padding-bottom: 30px;
}

.product-item {
  background-color: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

.product-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

/* 左侧区域：菜单图标 + 品牌信息 */
.product-content .left-section {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

/* 菜单图标 */
.product-content .menu-icon {
  display: flex;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  align-self: flex-start;
}

.product-content .menu-icon span {
  display: block;
  width: 20px;
  height: 2px;
  background-color: #333333;
  border-radius: 1px;
}

/* 品牌信息 */
.product-content .brand-info {
  margin: 0;
}

.product-content .brand-info h3 {
  font-size: 26px;
  color: #333;
  margin: 0;
  letter-spacing: 1px;
}

.product-content .brand-info .english-title {
  font-size: 8px;
  color: #000;
  margin-bottom: 10px;
  text-transform: uppercase;
  font-weight: normal;
}

.product-content .brand-info .consult-btn {
  display: inline-block;
  background-color: #0066cc;
  color: white;
  padding: 5px 15px;
  border-radius: 20px;
  text-decoration: none;
  font-size: 14px;
  cursor: pointer;
  transition: background-color 0.3s ease;
  font-weight: normal;
  letter-spacing: 1px;
}

.product-content .brand-info .consult-btn:hover {
  background-color: #0052a3;
}

/* 右侧区域：产品图片 */
.product-content .right-section {
  flex: 1;
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.product-content .product-image {
  width: 100%;
}

.product-content .product-image img {
  width: 100%;
  height: 120px;
  object-fit: contain;
}

/* 内容容器 */
.content-container {
  width: 1200px;
  max-width: 100%;
  margin: 0 auto;
  padding: 0 20px;
}

/* 值得信赖的品牌 */
.trusted-brand {
  background-color: white;
  padding: 30px 0;
}

.trusted-brand h2 {
  text-align: center;
  color: #0066cc;
  font-size: 45px;
  letter-spacing: 2px;
}

.trusted-brand .english-title {
  text-align: center;
  font-family: "思源黑体";
  color: #333333;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 24px;
}

.trusted-brand .title-line-container {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  width: 800px;
  max-width: 100%;
}

.trusted-brand .title-line {
  flex: 1;
  height: 1px;
  background-color: #dddddd;
}

.trusted-brand .title-line-blue {
  width: 100px;
  height: 5px;
  background-color: #0066cc;
  margin: 0 10px;
  border-radius: 10px;
}

.trusted-brand .description {
  text-align: center;
  margin-bottom: 40px;
  color: #333333;
  font-size: 24px;
  letter-spacing: 1px;
  font-family: "思源黑体";
}

.trusted-brand .trust-features {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 60px;
  max-width: 1000px;
  margin: 0 auto;
}

.trusted-brand .feature-item {
  flex: 1;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.trusted-brand .feature-icon {
  width: 120px;
  height: 120px;
  margin-bottom: 20px;
}

.trusted-brand .feature-icon img {
  width: 100%;
  height: auto;
}

.trusted-brand .feature-item h3 {
  font-size: 34px;
  color: #333333;
  letter-spacing: 1.5px;
  font-weight: bolder;
  font-family: "思源黑体";
}

.trusted-brand .feature-item p {
  font-size: 16px;
  color: #525252;
  line-height: 1.2;
  letter-spacing: 1px;
  font-family: "思源黑体";
}

/* 产品概述 */
.product-overview {
  background-color: white;
  padding: 30px 0;
}

.product-overview h2 {
  text-align: center;
  margin-bottom: 10px;
  color: #0066cc;
  font-size: 45px;
  letter-spacing: 2px;
}

.product-overview .english-title {
  text-align: center;
  font-family: "思源黑体";
  color: #333333;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 24px;
}

.product-overview .title-line-container {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  width: 800px;
  max-width: 100%;
}

.product-overview .title-line {
  flex: 1;
  height: 1px;
  background-color: #dddddd;
}

.product-overview .title-line-blue {
  width: 100px;
  height: 3px;
  background-color: #0066cc;
  margin: 0 10px;
}

.product-overview .description {
  text-align: center;
  margin-bottom: 20px;
  color: #333333;
  font-size: 24px;
  letter-spacing: 1px;
  font-family: "思源黑体";
}

.product-overview .overview-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
}

.product-overview .overview-image {
  border: 2px solid #0066cc;
  width: 90%;
}

.product-overview .overview-image img {
    width: 100%;
    height: auto;
}

.product-overview .overview-text {
  width: 90%;
  max-width: 900px;
}

.product-overview .overview-text p {
  font-size: 24px;
  color: #333333;
  line-height: 1.8;
  text-align: center;
  letter-spacing: 1px;
  font-family: "思源黑体";
}

/* 产品特点 */
.product-features {
  background-color: white;
  padding: 30px 0;
}

.product-features h2 {
  text-align: center;
  color: #0066cc;
  font-size: 45px;
  letter-spacing: 2px;
}

.product-features .english-title {
  text-align: center;
  color: #333333;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 18px; 
  font-family: "思源黑体";
}

.product-features .title-line-container {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 42px;
  width: 800px;
  max-width: 100%;
}

.product-features .title-line {
  flex: 1;
  height: 1px;
  background-color: #dddddd;
}

.product-features .title-line-blue {
  width: 100px;
  height: 3px;
  background-color: #0066cc;
  margin: 0 10px;
}

.product-features .description {
  text-align: center;
  margin-bottom: 60px;
  font-family: "思源黑体";
  color: #333333;
  font-size: 24px;
  letter-spacing: 1px;
}

.product-features .features-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 60px;
  max-width: 1000px;
  margin: 0 auto;
}

.product-features .features-image {
  flex: 1;
  max-width: 400px;
  box-sizing: border-box;
  border-radius: 8px;
}

.product-features .features-image img {
  width: 100%;
  height: auto;
}

.product-features .features-list {
  flex: 1;
  max-width: 500px;
}

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

.product-features .features-list li {
  font-size: 18px;
  color: #333333;
  line-height: 2.5;
  margin-bottom: 15px;
  letter-spacing: 0.5px;
  position: relative;
  padding-left: 0;
  font-weight: bold;
  font-family: "思源黑体";
}

/* 多场景适用 */
.application-scenarios {
  background-color: white;
  padding: 30px 0;
}

.application-scenarios h2 {
  text-align: center;
  color: #0066cc;
  font-size: 45px;
  letter-spacing: 2px;
}

.application-scenarios .english-title {
  text-align: center;
  color: #333333;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 24px;
}

.application-scenarios .title-line-container {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  width: 800px;
  max-width: 100%;
}

.application-scenarios .title-line {
  flex: 1;
  height: 1px;
  background-color: #dddddd;
}

.application-scenarios .title-line-blue {
  width: 100px;
  height: 3px;
  background-color: #0066cc;
  margin: 0 10px;
}

.application-scenarios .description {
  font-family: "思源黑体";
  text-align: center;
  color: #333333;
  font-size: 24px;
  margin-bottom: 20px;
  letter-spacing: 1px;
}

.application-scenarios .application-range {
  font-family: "思源黑体", "SimHei", sans-serif;
  text-align: left;
  margin-bottom: 40px;
  color: #333333;
  font-size: 24px;
  line-height: 1.8;
  letter-spacing: 1px;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.application-scenarios .scenarios-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
}

.application-scenarios .scenario-item {
  text-align: center;
}

.application-scenarios .scenario-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border: 2px solid #464646;
  margin-bottom: 20px;
}

.application-scenarios .scenario-item h3 {
  font-size: 22px;
  color: #333333;
  margin-bottom: 10px;
  letter-spacing: 1px;
}

.application-scenarios .scenario-item .english-title {
  font-size: 10px;
  color: #999999;
  margin-bottom: 0;
  letter-spacing: 1px;
}

/* 关于我们 */
.about-us-container {
  width: 100%;
  max-width: 1920px;
  margin: 0 auto;
  padding: 30px 0;
}

.about-us-content-container {
  width: 100%;
  max-width: 1920px;
  margin: 0 auto;
  padding: 0;
}

.about-us-content-container h2 {
  text-align: center;
  color: #0066cc;
  font-size: 45px;
  letter-spacing: 2px;
}

.about-us-content-container .english-title {
  text-align: center;
  color: #0066cc;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 18px;
}

.about-us-content-container .title-line-container {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  width: 800px;
  max-width: 100%;
}

.about-us-content-container .title-line {
  flex: 1;
  height: 1px;
  background-color: #dddddd;
}

.about-us-content-container .title-line-blue {
  width: 100px;
  height: 3px;
  background-color: #0066cc;
  margin: 0 10px;
}

.about-us-content-container .description {
  text-align: center;
  margin-bottom: 20px;
  color: #464646;
  font-size: 24px;
  letter-spacing: 1px;
  font-family: "思源黑体";
}

.about-content-container{
  background-image: url(about-bg.jpg);
  width: 100%;
  max-width: 1920px;
  background-repeat: no-repeat;
  background-size: 100% 80%;
  background-position: top center;
}

.about-us-content-container .about-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 10px;
  box-sizing: border-box;
}

.about-us-content-container .about-image {
  flex: 1;
  max-width: 670px;
}

.about-us-content-container .about-image img {
  width: 670px;
  height: 670px;
}

.about-us-content-container .about-text {
  flex: 1;
  padding-left: 40px;
  padding-top: 40px;
}

.about-us-content-container .about-text h3 {
  font-size: 32px;
  color: #FFF;
  margin-bottom: 20px;
  letter-spacing: 1px;
  padding-bottom: 10px;
  border-bottom: 1px solid #dddddd;
}

.about-us-content-container .about-text p {
  font-size: 22px;
  color: #FFF;
  line-height: 2.0;
  letter-spacing: 0.5px;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .application-scenarios .scenarios-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .about-us-content-container .about-content {
    flex-direction: column;
    align-items: center;
  }
  
  .about-us-content-container .about-image {
    max-width: 100%;
  }
  
  .about-us-content-container .about-text {
    padding-left: 0;
    border-left: none;
    margin-top: 30px;
    width: 100%;
  }
}

/* 底部样式 */
.footer {
  background-color: #333333;
  color: white;
  padding: 40px 0;
}

.footer .container {
  width: 1200px;
  max-width: 100%;
  margin: 0 auto;
  padding: 0 20px;
}

.footer-zdfoot {
  text-align: center;
  padding: 20px 0;
  border-top: 1px solid #444444;
  margin-top: 20px;
}

.footer-zdfoot p {
  margin: 0;
  font-size: 14px;
  color: #999999;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .product-features .features-content {
    flex-direction: column;
    align-items: center;
  }
  
  .product-features .features-image {
    max-width: 100%;
  }
  
  .application-scenarios .scenarios-grid {
    grid-template-columns: 1fr;
  }
}

/* 响应式设计 */
@media (max-width: 768px) {
  .trusted-brand .trust-features {
    flex-direction: column;
    gap: 40px;
  }
  
  .product-overview .overview-content {
    flex-direction: column;
  }
}

/* 顶部横幅 */
.banner-sub {
  width: 100%;
  position: relative;
  overflow: hidden;
}

.banner-sub img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  max-height: 502px;
}

/* 确保banner在不同屏幕尺寸下都能正确显示 */
@media (max-width: 768px) {
  .banner-sub img {
    max-height: 300px;
  }
}