:root {
  --primary-color: #3498db;
  --secondary-color: #2c3e50;
  --accent-color: #e74c3c;
  --gradient: linear-gradient(135deg, #3498db, #2ecc71);
}

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

body {
  font-family: "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}

header {
  background-color: #fff;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 5%;
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: bold;
  color: #2c3e50;
  text-decoration: none;
}

.logo img {
  height: 40px;
  width: auto;
  border-radius: 5px;
}

.logo span {
  font-size: 1.5rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: bold;
}

@media (max-width: 768px) {
  .logo img {
    height: 32px;
  }

  .logo span {
    font-size: 1.2rem;
  }
}

nav ul {
  display: flex;
  list-style: none;
}

nav ul li a {
  text-decoration: none;
  color: #2c3e50;
  padding: 0.5rem 1rem;
  transition: color 0.3s;
}

nav ul li a:hover {
  color: #3498db;
}

.banner {
  background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)),
    url("https://imageb2c.sdslyygroup.com:9030/b2b2cdevimages/seller/goods/upUDvmor5GdW2vrjQhx.jpg?bindId=8");
  background-size: cover;
  background-position: center;
  height: 500px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  color: white;
  margin-top: 60px;
}

.banner h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

main {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 1rem;
}

.products {
  margin: 3rem 0;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.product-item {
  text-align: center;
  padding: 1rem;
  border: 1px solid #eee;
  border-radius: 5px;
  transition: transform 0.3s;
}

.product-item:hover {
  transform: translateY(-5px);
}

.product-item img {
  max-width: 100%;
  height: auto;
}

.about-preview {
  background-color: #f8f9fa;
  padding: 3rem;
  border-radius: 5px;
  margin: 3rem 0;
}

footer {
  background-color: #2c3e50;
  color: white;
  padding: 2rem 0;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.copyright {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 2rem;
}

/* 添加汉堡菜单按钮样式 */
.menu-toggle {
  display: none;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
}

.menu-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: #2c3e50;
  margin: 5px 0;
  transition: all 0.3s;
}

/* 现代化改进样式 */
.section-title {
  text-align: center;
  margin-bottom: 3rem;
  position: relative;
}

.section-title::after {
  content: "";
  width: 50px;
  height: 3px;
  background: var(--gradient);
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
}

/* 特色服务部分 */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  padding: 4rem 0;
}

.feature-card {
  background: white;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
  text-align: center;
}

.feature-card:hover {
  transform: translateY(-10px);
}

.feature-icon {
  width: 70px;
  height: 70px;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
}

.feature-icon i {
  font-size: 2rem;
  color: white;
}

/* 产品展示改进 */
.product-filters {
  display: flex;
  justify-content: center;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.filter-btn {
  padding: 0.8rem 1.5rem;
  border: none;
  background: white;
  border-radius: 30px;
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* 动画类 */
.animate-fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.animate-fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 通用布局类 */
.section-padding {
  padding: 5rem 0;
}

.text-center {
  text-align: center;
}

.bg-light {
  background-color: var(--bg-light);
}

/* 特色服务样式 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.feature-card {
  background: white;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  text-align: center;
  transition: transform 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-10px);
}

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-icon i {
  font-size: 2rem;
  color: white;
}

/* 统计数据样式 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.stat-card {
  text-align: center;
  padding: 2rem;
  background: white;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.stat-number {
  font-size: 3rem;
  font-weight: bold;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.stat-label {
  color: var(--text-dark);
  font-size: 1.1rem;
}

/* 新闻卡片样式 */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.news-card {
  background: white;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease;
}

.news-card:hover {
  transform: translateY(-10px);
}

.news-image img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.news-content {
  padding: 1.5rem;
}

.news-date {
  color: var(--primary-color);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.btn-text {
  color: var(--primary-color);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  transition: gap 0.3s ease;
}

.btn-text:hover {
  gap: 1rem;
}

/* 响应式调整 */
@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .news-grid {
    grid-template-columns: 1fr;
  }
}

/* 特色服务部分改进 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
  padding: 0 1rem;
}

.feature-card {
  background: white;
  padding: 2.5rem 2rem;
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  text-align: center;
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-icon i {
  font-size: 2rem;
  color: white;
}

.feature-card h3 {
  color: var(--secondary-color);
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.feature-card p {
  color: #666;
  line-height: 1.6;
}

/* 合作伙伴样式改进 */
.partner-slider {
  padding: 2rem 0;
  background: white;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.partner-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  padding: 0 2rem;
  align-items: center;
}

.partner-logo {
  text-align: center;
  padding: 1rem;
  transition: transform 0.3s ease;
}

.partner-logo img {
  max-width: 150px;
  height: auto;
  /* filter: grayscale(100%); */
  opacity: 0.6;
  transition: all 0.3s ease;
}

.partner-logo:hover {
  transform: translateY(-5px);
}

.partner-logo:hover img {
  filter: grayscale(0%);
  opacity: 1;
}

@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .news-grid {
    grid-template-columns: 1fr;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .partner-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }

  .partner-logo img {
    max-width: 120px;
  }
}

/* 特色服务部分改进 */
.features.section-padding {
  display: block;
  padding: 5rem 0;
}

.features-container {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 4rem;
  align-items: start;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.features-title-section {
  position: sticky;
  top: 100px;
}

.features-title-section .section-title {
  text-align: left;
  margin-bottom: 2rem;
}

.features-title-section .section-title::after {
  left: 0;
  transform: none;
}

.features-title-section p {
  color: #666;
  line-height: 1.8;
  margin-bottom: 2rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

@media (max-width: 992px) {
  .features-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .features-title-section {
    position: static;
    text-align: center;
  }

  .features-title-section .section-title {
    text-align: center;
  }

  .features-title-section .section-title::after {
    left: 50%;
    transform: translateX(-50%);
  }
}

/* 关于页面样式 */
.page-header {
  background: var(--gradient);
  color: white;
  padding: 4rem 0;
  text-align: center;
  margin-bottom: 4rem;
}

.page-header .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.breadcrumb {
  margin-top: 1rem;
}

.breadcrumb a {
  color: white;
  text-decoration: none;
}

/* 公司简介部分 */
.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.intro-content {
  padding-right: 2rem;
}

.intro-content p {
  margin-bottom: 1.5rem;
  color: #666;
  line-height: 1.8;
}

.company-highlights {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}

.highlight-item {
  text-align: center;
  padding: 1.5rem;
  background: white;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.highlight-item i {
  font-size: 2rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

/* 发展历程 */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 0;
}

.timeline::before {
  content: "";
  position: absolute;
  width: 2px;
  background: var(--primary-color);
  top: 0;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
}

.timeline-item {
  margin-bottom: 2rem;
  position: relative;
  width: 50%;
  padding: 0 2rem;
}

.timeline-item:nth-child(odd) {
  left: 0;
}

.timeline-item:nth-child(even) {
  left: 50%;
}

.timeline-date {
  font-weight: bold;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.timeline-content {
  background: white;
  padding: 1.5rem;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

/* 企业文化 */
.culture-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.culture-item {
  text-align: center;
  padding: 2rem;
  background: white;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease;
}

.culture-item:hover {
  transform: translateY(-10px);
}

.culture-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.culture-icon i {
  font-size: 2rem;
  color: white;
}

/* 荣誉资质 */
.honors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.honor-item {
  text-align: center;
  background: white;
  padding: 1rem;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease;
}

.honor-item:hover {
  transform: translateY(-10px);
}

.honor-item img {
  width: 100%;
  height: auto;
  border-radius: 5px;
  margin-bottom: 1rem;
}

/* 动画类扩展 */
.animate-fade-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: all 0.6s ease;
}

.animate-fade-right {
  opacity: 0;
  transform: translateX(30px);
  transition: all 0.6s ease;
}

.animate-fade-left.visible,
.animate-fade-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* 响应式调整 */
@media (max-width: 992px) {
  .intro-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .timeline::before {
    left: 0;
  }

  .timeline-item {
    width: 100%;
    left: 0 !important;
    padding-left: 2rem;
  }
}

/* 产品中心页面样式 */
.product-filter-section {
  padding: 2rem 0;
  background: var(--bg-light);
}

.filter-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.category-filters {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.8rem 1.5rem;
  border: none;
  background: white;
  border-radius: 30px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: 500;
}

.filter-btn.active {
  background: var(--primary-color);
  color: white;
}

.search-box {
  display: flex;
  gap: 0.5rem;
}

.search-box input {
  padding: 0.8rem 1.5rem;
  border: 1px solid #eee;
  border-radius: 30px;
  width: 250px;
}

.search-box button {
  width: 45px;
  border-radius: 50%;
  border: none;
  background: var(--primary-color);
  color: white;
  cursor: pointer;
  transition: all 0.3s ease;
}

.search-box button:hover {
  transform: scale(1.1);
}

/* 产品卡片样式 */
.product-card {
  background: white;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.product-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.product-image {
  position: relative;
  padding-top: 75%;
  overflow: hidden;
}

.product-image img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: all 0.3s ease;
}

.product-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(52, 152, 219, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all 0.3s ease;
}

.product-card:hover .product-image img {
  transform: scale(1.1);
}

.product-card:hover .product-overlay {
  opacity: 1;
}

.view-details {
  color: white;
  text-decoration: none;
  padding: 0.8rem 1.5rem;
  border: 2px solid white;
  border-radius: 30px;
  transition: all 0.3s ease;
}

.view-details:hover {
  background: white;
  color: var(--primary-color);
}

.product-info {
  padding: 1.5rem;
}

.product-category {
  color: var(--primary-color);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.product-info h3 {
  margin: 0.5rem 0;
  font-size: 1.2rem;
  color: var(--text-dark);
}

.product-meta {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
  color: #666;
  font-size: 0.9rem;
}

.product-meta span {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* 响应式调整 */
@media (max-width: 768px) {
  .filter-wrapper {
    flex-direction: column;
    align-items: stretch;
  }

  .search-box {
    width: 100%;
  }

  .search-box input {
    flex: 1;
  }
}

/* 产品网格紧凑布局 */
.product-grid.compact {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1rem;
  padding: 1rem;
}

.product-grid.compact .product-card {
  background: white;
  border-radius: 8px;
  padding: 1.2rem;
  transition: all 0.3s ease;
  border: 1px solid #eee;
  height: 100%;
}

.product-grid.compact .product-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  border-color: var(--primary-color);
}

.product-grid.compact .product-info {
  padding: 0;
}

.product-grid.compact h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  color: var(--secondary-color);
}

.product-desc {
  font-size: 0.9rem;
  color: #666;
  margin-bottom: 1rem;
  line-height: 1.4;
}

.product-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
}

.product-tag {
  background: var(--primary-color);
  color: white;
  padding: 0.2rem 0.8rem;
  border-radius: 15px;
  font-size: 0.8rem;
}

.product-spec {
  color: #666;
}

/* 响应式调整 */
@media (max-width: 768px) {
  .product-grid.compact {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  }
}

/* 联系页面样式 */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 3rem;
  margin-top: 2rem;
}

.contact-info-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.info-card {
  background: white;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease;
}

.info-card:hover {
  transform: translateY(-5px);
}

.info-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.info-icon i {
  font-size: 1.5rem;
  color: white;
}

.info-card h3 {
  color: var(--secondary-color);
  margin-bottom: 1rem;
}

.info-card p {
  color: #666;
  margin-bottom: 0.5rem;
}

/* 表单样式改进 */
.contact-form-wrapper {
  background: white;
  padding: 3rem;
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.form-header {
  margin-bottom: 2rem;
  text-align: center;
}

.form-header h2 {
  color: var(--secondary-color);
  margin-bottom: 1rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--secondary-color);
  font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1px solid #eee;
  border-radius: 8px;
  font-family: inherit;
  transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.form-group textarea {
  height: 150px;
  resize: vertical;
}

.submit-btn {
  width: 100%;
  padding: 1rem;
  background: var(--gradient);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
}

/* 地图部分样式 */
.map-section {
  padding: 5rem 0;
  background: var(--bg-light);
}

.map-wrapper {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 2rem;
}

.map-container {
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.map-container img {
  width: 100%;
  height: auto;
  display: block;
}

.map-info {
  padding: 2rem;
  background: white;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.transport-info {
  margin-top: 1.5rem;
}

.transport-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.transport-item i {
  color: var(--primary-color);
}

/* 响应式调整 */
@media (max-width: 992px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .map-wrapper {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .form-row {
    grid-template-columns: 1fr;
  }

  .contact-form-wrapper {
    padding: 1.5rem;
  }
}