/* ================= 全局样式配置================= */
:root {
  /* 品牌主色 */
  --primary-color: #708c8c;
  /* 辅助色 */
  --secondary-color: #0066b2;
  /* 背景色 */
  --bg-light: #f9fafb;
  --bg-white: #ffffff;
  --bg-dark: #1a1a1a;
  /* 文本色 */
  --text-main: #333333;
  --text-secondary: #666666;
  --text-tertiary: #999999;
  /* 边框/分割色 */
  --border-light: #eee;
  --border-medium: #f0f0f0;
  /* 间距配置 */
  --spacing-xs: 8px;
  --spacing-sm: 15px;
  --spacing-md: 20px;
  --spacing-lg: 30px;
  --spacing-xl: 40px;
  /* 过渡/动画配置 */
  --transition-base: all 0.3s ease;
  --transition-slow: all 0.6s ease-out;
  --animation-fade: fadeIn 0.5s ease;
}

/* ================= 基础样式重置 ================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Arial", "Helvetica", sans-serif;
}

body {
  color: var(--text-main);
  background-color: var(--bg-white);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-base);
}

ul {
  list-style: none;
}

/* 通用动画（复用） */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ================= 头部导航核心样式 ================= */
.main-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 999;
  background-color: transparent;
  box-shadow: none;
  transition: var(--transition-base);
}

/* 滚动/不透明状态合并（优化重复样式） */
.main-header.scrolled,
.main-header.opaque {
  background-color: rgba(255, 255, 255, 0.95);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.header-wrapper {
  width: 100%;
  max-width: 1200px; /* */
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 50px;
}

/* LOGO 容器 */
.logo-container {
  flex: 0 0 auto;
  padding-left: 0;
}

.main-logo {
  height: 50px;
}

/* 主导航容器 */
.main-nav {
  flex: 1;
  margin: 0 60px;
  overflow: visible;
}

/* 导航列表布局 */
.nav-list {
  display: flex;
  justify-content: center;
  gap: 40px;
}

/* 导航链接基础样式 */
.nav-link {
  display: inline-block;
  font-size: 16px;
  color: #fff;
  font-weight: 600;
  padding: 10px 0;
  position: relative;
  transition: var(--transition-base);
}

/* 滚动/不透明状态链接颜色（合并规则） */
.main-header.scrolled .nav-link,
.main-header.opaque .nav-link {
  color: var(--text-main) !important;
}

/* 导航项下划线动画（优化过渡） */
.nav-item {
  position: relative;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: width 0.3s ease, left 0.3s ease;
}

.nav-link:hover::after {
  width: 100%;
  left: 0;
}

/* 导航链接hover颜色统一 */
.nav-link:hover {
  color: var(--primary-color) !important;
}

/* ================= 二级菜单核心样式 ================= */
/* 通用二级菜单（全屏宽度） */
.submenu,
.product-submenu {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  width: 100vw;
  min-width: 100%;
  max-width: none;
  background-color: var(--bg-white);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  padding: var(--spacing-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition-base);
  z-index: 9999;
}

/* hover触发显示 */
.has-submenu:hover .submenu,
.product-dropdown:hover .product-submenu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* 二级菜单列表项 */
.submenu li a {
  display: block;
  padding: 8px 20px;
  font-size: 14px;
  transition: var(--transition-base);
}

.submenu li a:hover {
  background-color: #f5f7fa;
  color: var(--primary-color);
}

/* 产品中心二级菜单 */
.product-submenu {
  display: flex;
  flex-direction: row; /* 明确方向 */
  gap: var(--spacing-lg); 
}

/* 产品分类导航（左侧） */
.product-categories {
  width: auto;
  flex-shrink: 0;
  border-right: 1px solid var(--border-medium);
  padding-right: var(--spacing-lg);
}

.product-categories h3 {
  font-size: 18px;
  color: var(--secondary-color);
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-medium);
}

.category-link {
  display: flex;
  align-items: center;
  padding: 12px 15px;
  border-radius: 6px;
  margin-bottom: 8px;
  transition: var(--transition-base);
}

.category-link i {
  margin-right: 10px;
  width: 20px;
  text-align: center;
  color: var(--text-secondary);
}

.category-link.active,
.category-link:hover {
  background-color: #f5f7fa;
  color: var(--primary-color);
}

.category-link.active i,
.category-link:hover i {
  color: var(--primary-color);
}

/* 产品展示区（右侧） */
.product-display {
  flex-grow: 1;
  padding-left: var(--spacing-lg);
}

.product-display-item {
  display: none;
  animation: var(--animation-fade);
}

.product-display-item.active {
  display: flex;
  gap: var(--spacing-lg);
}

.product-display-item img {
  width: 300px;
  height: 220px;
  object-fit: contain;
  border: 1px solid var(--border-medium);
  border-radius: 4px;
  padding: 15px;
}

.product-info {
  flex-grow: 1;
}

.product-info h4 {
  font-size: 20px;
  margin-bottom: 15px;
  color: var(--text-main);
}

.product-info p {
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.7;
}

.product-list li {
  margin-bottom: 10px;
}

.product-list a:hover {
  color: var(--primary-color);
  padding-left: 5px;
}

/* ================= 头部右侧功能区 ================= */
.header-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.language-switch {
  display: flex;
  gap: 8px;
}

.lang-btn {
  background: none;
  border: 1px solid #ddd;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 14px;
  font-weight: 500;
  color: #050505;
  cursor: pointer;
  transition: var(--transition-base);
}

.lang-btn:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.lang-btn.active {
  background-color: var(--primary-color);
  color: #050505;
  border-color: var(--primary-color);
}

.search-btn {
  background: none;
  border: none;
  font-size: 18px;
  color: #fff;
  cursor: pointer;
  transition: var(--transition-base);
}

.search-btn:hover {
  color: var(--primary-color);
}

/* 滚动状态功能区颜色适配 */
.main-header.scrolled .lang-btn,
.main-header.scrolled .search-btn {
  color: var(--text-main);
}

/* ================= 首屏轮播 ================= */
.banner-carousel {
  position: relative;
  margin-top: 0;
  height: 1000px;
  overflow: hidden;
}

.carousel-wrapper {
  position: relative;
  height: 100%;
}

.carousel-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-base);
}

.carousel-slide.active {
  opacity: 1;
  visibility: visible;
  z-index: 10;
}

.banner-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.banner-text {
  position: absolute;
  top: 50%;
  left: 10%;
  transform: translateY(-50%);
  z-index: 20;
  max-width: 600px;
  color: #fff;
}

.banner-text h2 {
  font-size: 42px;
  margin-bottom: 20px;
  line-height: 1.2;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.banner-text p {
  font-size: 18px;
  margin-bottom: 30px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.banner-btn {
  display: inline-block;
  padding: 12px 30px;
  background-color: var(--primary-color);
  color: #fff;
  border-radius: 4px;
  font-weight: 500;
  transition: var(--transition-base);
}

.banner-btn:hover {
  background-color: var(--primary-color);
  transform: translateY(-3px);
}

/* 轮播控制按钮 */
.carousel-control {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 60px;
  height: 60px;
  background-color: rgba(255, 255, 255, 0.3);
  border: none;
  border-radius: 50%;
  color: #1d1c1c;
  font-size: 30px;
  cursor: pointer;
  z-index: 30;
  transition: var(--transition-base);
}

.carousel-control.prev {
  left: 30px;
}

.carousel-control.next {
  right: 30px;
}

.carousel-control:hover {
  background-color: rgba(255, 255, 255, 0.5);
}

/* 轮播指示器 */
.carousel-indicators {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 30;
}

.indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: var(--transition-base);
}

.indicator.active {
  width: 30px;
  border-radius: 6px;
  background-color: #fff;
}

/* ================= 产品优势板块 ================= */
.product-advantages {
  padding: 100px 0;
  background-color: var(--bg-light);
  flex: 1;
}

.section-title {
  text-align: center;
  margin-bottom: 60px;
}

.section-title h2 {
  font-size: 32px;
  color: var(--text-main);
  margin-bottom: 15px;
}

.section-title p {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.advantages-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  padding: 0 var(--spacing-md);
}

.advantage-card {
  background-color: var(--bg-white);
  padding: var(--spacing-xl) var(--spacing-lg);
  border-radius: 8px;
  text-align: center;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.03);
  transition: var(--transition-base);
}

.advantage-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.08);
}

.card-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 25px;
  background-color: #e8f4fc;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: var(--primary-color);
}

.advantage-card h3 {
  font-size: 20px;
  margin-bottom: 15px;
  color: var(--text-main);
}

.advantage-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ================= 页脚核心样式 ================= */
.main-footer {
  background-color: var(--bg-dark);
  color: var(--text-tertiary);
  padding: 80px 0 30px;
  margin-top: auto;
  width: 100%;
  font-size: 14px;
  font-family: "Arial", "Helvetica", sans-serif;
}

/* 页脚网格布局 */
.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--spacing-lg);
  padding: 0 var(--spacing-md);
}

/* 页脚列通用样式 */
.footer-col {
  display: flex;
  flex-direction: column;
}

.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 8px;
}

/* 标题下划线 */
.footer-col h4::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background-color: var(--primary-color);
}

/* 技术支持列标题样式 */
.footer-col:nth-child(4) h4 {
  color: #888;
  font-size: 15px;
}

/* 页脚列表 */
.footer-col ul {
  list-style: none;
  flex: 1;
  padding: 0;
  margin: 0;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a:hover {
  color: var(--primary-color);
  padding-left: 4px;
}

/* 联系我们板块 */
.footer-col.contact-info {
  grid-column: span 1;
}

.footer-col.contact-info p {
  display: flex;
  align-items: flex-start;
  margin-bottom: 12px;
  line-height: 1.6;
  padding: 0;
  margin-top: 0;
}

/* 联系信息图标 */
.footer-col.contact-info p i {
  color: var(--primary-color);
  width: 18px;
  margin-right: 8px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  flex-shrink: 0;
}

/* 社交图标 */
.social-icons {
  display: flex;
  gap: 10px;
  margin-top: 18px;
  padding: 0;
  margin-bottom: 0;
}

.social-icons a {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background-color: #333;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-tertiary);
  transition: var(--transition-base);
}

.social-icons a:hover {
  background-color: var(--primary-color);
  color: #fff;
  transform: translateY(-2px);
}

/* 版权栏 */
.copyright {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
  padding-top: 30px;
  margin-top: 30px;
  border-top: 1px solid #333;
  font-size: 13px;
  color: #666;
  padding-left: var(--spacing-md);
  padding-right: var(--spacing-md);
}

.copyright a:hover {
  color: var(--primary-color);
  text-decoration: underline;
}

/* ================= 关于我们页面样式 ================= */
.about-us {
  padding: 120px 20px 80px;
  max-width: 1200px;
  margin: 0 auto;
}

.about-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 60px;
}

.company-intro,
.company-history {
  background-color: var(--bg-white);
  padding: var(--spacing-xl);
  border-radius: 8px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.03);
}

.about-content h3 {
  font-size: 24px;
  color: var(--text-main);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-light);
}

.about-content p {
  margin-bottom: 15px;
  line-height: 1.8;
}

/* 时间轴样式 */
.timeline {
  position: relative;
  max-width: 1000px;
  margin: 40px auto 0;
  padding-left: 20px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 4px;
  background-color: #e8f4fc;
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  margin-bottom: 50px;
  padding-left: 40px;
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition-slow);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -12px;
  top: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--primary-color);
  border: 4px solid #e8f4fc;
  z-index: 1;
}

.timeline-date {
  font-size: 18px;
  font-weight: bold;
  color: var(--secondary-color);
  margin-bottom: 10px;
}

.timeline-content h4 {
  font-size: 18px;
  margin-bottom: 10px;
  color: var(--text-main);
}

.timeline-content p {
  color: var(--text-secondary);
  line-height: 1.7;
}

.timeline-item.visible {
  opacity: 1;
  transform: translateY(0);
}

/* LOGO展示 */
.company-logo {
  text-align: center;
  margin-bottom: 30px;
}

.about-us .section-title {
  margin-top: 0;
}

/* ================= 服务支持页面样式 ================= */
.support-page {
  padding: 80px 20px 100px;
  max-width: 1200px;
  margin: 0 auto;
  flex: 1;
}

.support-container {
  margin-top: 40px;
}

/* 标签页 */
.support-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 30px;
  overflow-x: auto;
  scrollbar-width: none;
  justify-content: center;
}

.support-tabs::-webkit-scrollbar {
  display: none;
}

.support-tab {
  background: none;
  border: none;
  padding: 15px 25px;
  font-size: 16px;
  color: var(--text-secondary);
  cursor: pointer;
  position: relative;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition-base);
}

.support-tab.active {
  color: var(--primary-color);
}

.support-tab.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: var(--primary-color);
}

.support-tab:hover {
  color: var(--primary-color);
}

.support-section {
  display: none;
  animation: var(--animation-fade);
}

.support-section.active {
  display: block;
}

/* 技术文档样式 */
.docs-container {
  display: flex;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.doc-category h3 {
  font-size: 18px;
  color: var(--text-main);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-light);
}

.doc-category li {
  margin-bottom: 15px;
}

.doc-category a {
  display: flex;
  align-items: center;
  color: var(--text-secondary);
}

.doc-category a:hover {
  color: var(--primary-color);
}

.doc-category i {
  margin-right: 10px;
  color: var(--primary-color);
}

.doc-date {
  margin-left: auto;
  font-size: 14px;
  color: var(--text-tertiary);
}

/* 常见问题样式 */
.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border-light);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  cursor: pointer;
  font-weight: 600;
  color: var(--text-main);
}

.faq-question i {
  transition: var(--transition-base);
  color: var(--primary-color);
}

.faq-answer {
  display: none;
  padding-bottom: 20px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* 服务流程样式 */
.process-steps {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  position: relative;
  margin: 50px 0;
  gap: var(--spacing-lg);
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 30px;
  left: 5%;
  right: 5%;
  height: 2px;
  background-color: #e8f4fc;
  z-index: 1;
}

.process-step {
  flex: 1;
  min-width: 180px;
  text-align: center;
  position: relative;
  z-index: 2;
  margin-bottom: 30px;
}

.step-number {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: #e8f4fc;
  color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: bold;
  margin: 0 auto 15px;
}

.step-content h3 {
  font-size: 16px;
  color: var(--text-main);
  margin-bottom: 10px;
}

.step-content p {
  font-size: 14px;
  color: var(--text-secondary);
}

.process-arrow {
  display: none;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
}

/* 联系客服样式 */
.contact-methods {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: 60px;
}

.contact-method {
  background-color: var(--bg-light);
  padding: var(--spacing-lg);
  border-radius: 8px;
  text-align: center;
}

.method-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background-color: #e8f4fc;
  color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  margin: 0 auto 20px;
}

.contact-method h3 {
  font-size: 18px;
  color: var(--text-main);
  margin-bottom: 10px;
}

.contact-method p {
  color: var(--text-secondary);
  margin-bottom: 15px;
}

.contact-value {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-main);
}

.contact-btn {
  background-color: var(--primary-color);
  color: #fff;
  border: none;
  padding: 10px 20px;
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition-base);
}

.contact-btn:hover {
  background-color: #5a7575;
}

/* 表单样式 */
.support-form {
  max-width: 700px;
  margin: 0 auto;
  background-color: var(--bg-light);
  padding: var(--spacing-xl);
  border-radius: 8px;
}

.support-form h3 {
  font-size: 20px;
  color: var(--text-main);
  margin-bottom: 30px;
  text-align: center;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  color: var(--text-main);
  font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 16px;
}

.form-group textarea {
  resize: vertical;
}

.submit-btn {
  display: block;
  width: 100%;
  padding: 14px;
  background-color: var(--primary-color);
  color: #fff;
  border: none;
  border-radius: 4px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-base);
}

.submit-btn:hover {
  background-color: #5a7575;
}

/* ================= 隐私政策页面专属样式 ================= */
.privacy-policy {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
  box-sizing: border-box;
}

/* LOGO 区域 */
.privacy-policy .company-logo {
  text-align: center;
  margin-bottom: 30px;
}

.privacy-policy .logo-img {
  max-height: 80px;
  object-fit: contain;
}

/* 标题区域 */
.privacy-policy .section-title {
  text-align: center;
  margin-bottom: 40px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-light);
}

.privacy-policy .section-title h2 {
  font-size: 28px;
  color: var(--text-main);
  margin-bottom: 10px;
  font-weight: 600;
}

.privacy-policy .section-title p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* 核心内容容器 */
.privacy-content {
  margin-top: 10px;
  line-height: 1.8;
  color: var(--text-main);
  font-size: 15px;
}

/* 政策元信息 */
.policy-meta {
  margin-bottom: 25px;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--border-medium);
  font-size: 14px;
  color: var(--text-secondary);
}

.policy-meta .meta-item {
  display: inline-block;
  margin-right: 25px;
}

.policy-meta .meta-item strong {
  color: var(--text-main);
}

/* 政策引言 */
.policy-intro {
  margin-bottom: 40px;
  font-size: 16px;
  color: var(--text-secondary);
  background-color: var(--bg-light);
  padding: var(--spacing-md);
  border-radius: 8px;
}

/* 政策章节 */
.policy-section {
  margin-bottom: 45px;
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition-slow);
}

.policy-section.visible {
  opacity: 1;
  transform: translateY(0);
}

.policy-section h3 {
  font-size: 20px;
  margin-bottom: 20px;
  color: var(--text-main);
  border-left: 4px solid var(--primary-color); /* 统一品牌色 */
  padding-left: 15px;
  font-weight: 600;
}

/* 子章节 */
.policy-subsection {
  margin-bottom: 30px;
}

.policy-subsection h4 {
  font-size: 17px;
  margin: 20px 0 12px;
  color: var(--text-main);
  font-weight: 600;
}

/* 列表样式 */
.policy-list {
  padding-left: 25px;
  margin: 10px 0 18px;
  list-style: disc;
  color: var(--text-secondary);
}

.policy-list li {
  margin-bottom: 8px;
}

.policy-ordered-list {
  padding-left: 25px;
  margin: 10px 0 18px;
  list-style: decimal;
  color: var(--text-secondary);
}

.policy-ordered-list li {
  margin-bottom: 10px;
}

/* 提示信息（统一品牌色） */
.policy-note {
  background-color: #f5f8ff;
  padding: 15px 20px;
  margin: 15px 0;
  border-radius: 6px;
  font-size: 14px;
  color: var(--text-secondary);
  border-left: 3px solid var(--primary-color);
}

.policy-note i {
  color: var(--primary-color);
  margin-right: 8px;
}

/* 表格容器 */
.policy-table-container {
  overflow-x: auto;
  margin: 20px 0;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

/* 表格样式 */
.policy-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
  background-color: var(--bg-white);
}

.policy-table th,
.policy-table td {
  padding: 12px 15px;
  border: 1px solid var(--border-light);
  text-align: left;
  font-size: 14px;
}

.policy-table th {
  background-color: #f8f9fa;
  font-weight: 600;
  color: var(--text-main);
}

.policy-table tr:hover {
  background-color: var(--bg-light);
}

/* 链接样式（统一品牌色） */
.privacy-content a {
  color: var(--primary-color);
  text-decoration: none;
}

.privacy-content a:hover {
  color: #5a7575;
  text-decoration: underline;
}

/* ================= 响应式适配（统一断点） ================= */
/* 平板/小屏电脑 (≤1024px) */
@media (max-width: 1024px) {
  /* 页脚适配 */
  .footer-container {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
  }
  .footer-col.contact-info {
    grid-column: span 2;
  }
  
  /* 产品优势适配 */
  .advantages-container {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* 平板 (≤768px) */
@media (max-width: 768px) {
  /* 通用适配 */
  .header-wrapper {
    padding: 0 20px;
  }
  
  .main-nav {
    margin: 0 20px;
  }
  
  .nav-list {
    gap: 20px;
  }

  /* 关于我们适配 */
  .about-content {
    gap: 30px;
  }
  
  .company-intro,
  .company-history {
    padding: 25px;
  }
  
  /* 时间轴适配 */
  .timeline {
    padding-left: 15px;
  }
  
  .timeline-item {
    padding-left: 30px;
    margin-bottom: 35px;
  }
  
  .timeline-date {
    font-size: 16px;
  }

  /* 服务支持适配 */
  .process-steps {
    flex-direction: column;
    align-items: center;
  }
  
  .process-steps::before {
    display: none;
  }
  
  .process-arrow {
    display: block;
    width: 100%;
    margin: -15px 0;
  }
  
  .process-arrow i {
    transform: rotate(90deg);
  }
  
  .support-form {
    padding: 25px;
  }

  /* 隐私政策适配 */
  .privacy-policy {
    padding: 20px 15px;
  }

  .privacy-policy .section-title h2 {
    font-size: 24px;
  }

  .privacy-policy .section-title p {
    font-size: 14px;
  }

  .policy-meta .meta-item {
    display: block;
    margin-right: 0;
    margin-bottom: 8px;
  }

  .policy-intro {
    padding: 15px;
    font-size: 14px;
  }

  .policy-section h3 {
    font-size: 18px;
  }

  .policy-subsection h4 {
    font-size: 16px;
  }

  .policy-note {
    padding: 12px 15px;
    font-size: 13px;
  }

  .policy-table th,
  .policy-table td {
    padding: 10px 12px;
    font-size: 13px;
  }

  /* 页脚适配 */
  .footer-container {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* 手机 (≤576px) */
@media (max-width: 576px) {
  /* 通用适配 */
  .header-wrapper {
    height: 60px;
  }
  
  .main-logo {
    height: 40px;
  }
  
  .nav-list {
    gap: 10px;
  }
  
  .nav-link {
    font-size: 14px;
  }

  /* 轮播适配 */
  .banner-carousel {
    height: 500px;
  }
  
  .banner-text h2 {
    font-size: 28px;
  }
  
  .banner-text p {
    font-size: 14px;
  }
  
  .carousel-control {
    width: 40px;
    height: 40px;
    font-size: 20px;
  }

  /* 产品优势适配 */
  .advantages-container {
    grid-template-columns: 1fr;
  }
  
  .advantage-card {
    padding: 30px 20px;
  }

  /* 页脚适配 */
  .footer-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .footer-col.contact-info {
    grid-column: span 1;
  }
  
  .main-footer {
    padding: 60px 0 20px;
  }
  
  .copyright {
    padding-top: 20px;
    margin-top: 20px;
    line-height: 1.8;
  }

  /* 隐私政策适配 */
  .privacy-policy .logo-img {
    max-height: 60px;
  }

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

  .policy-list,
  .policy-ordered-list {
    padding-left: 20px;
  }
}

/* 极小屏手机 (≤480px) */
@media (max-width: 480px) {
  /* 导航适配 */
  .header-actions {
    gap: 10px;
  }
  
  .lang-btn {
    width: 30px;
    height: 30px;
    font-size: 12px;
  }
  
  .search-btn {
    font-size: 16px;
  }

  /* 服务支持适配 */
  .support-tab {
    padding: 10px 15px;
    font-size: 14px;
  }
  
  .contact-method {
    padding: 20px;
  }
  
  .method-icon {
    width: 60px;
    height: 60px;
    font-size: 24px;
  }
}