/* 
 * Microsoft Teams 网站统一样式表
 * 版本: 1.0
 * 作者: Microsoft Teams 设计团队
 * 描述: 包含Teams网站所有页面的通用样式和组件样式
 */

/* ===== 基础样式与变量定义 ===== */
:root {
  /* 主色调 */
  --primary-color: #464EB8;
  --secondary-color: #7B83EB;
  --accent-color: #6268C4;
  --light-color: #F5F7FF;
  --dark-color: #2C317A;
  
  /* 文本颜色 */
  --text-color: #333333;
  --light-text: #666666;
  
  /* 边框与背景色 */
  --border-color: #E1E5F1;
  
  /* 状态色 */
  --success-color: #4CAF50;
  --warning-color: #FF9800;
  --info-color: #2196F3;
  --error-color: #F44336;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
  color: var(--text-color);
  line-height: 1.6;
  background-color: #f9f9f9;
}

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

/* ===== 通用组件样式 ===== */

/* 头部导航 */
header {
  background-color: white;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 0;
}

.logo {
  display: flex;
  align-items: center;
}

.logo img {
  height: 32px;
  margin-right: 10px;
}

.logo h1 {
  font-size: 24px;
  color: var(--primary-color);
}

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

nav ul li {
  margin-left: 25px;
}

nav ul li a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  transition: color 0.3s;
}

nav ul li a:hover,
nav ul li a.active {
  color: var(--primary-color);
}

.mobile-menu {
  display: none;
  font-size: 24px;
  cursor: pointer;
}

/* 面包屑导航 */
.breadcrumb {
  background-color: white;
  padding: 15px 0;
  border-bottom: 1px solid var(--border-color);
}

.breadcrumb ul {
  display: flex;
  list-style: none;
}

.breadcrumb ul li {
  margin-right: 10px;
  font-size: 0.9rem;
}

.breadcrumb ul li:after {
  content: ">";
  margin-left: 10px;
  color: var(--light-text);
}

.breadcrumb ul li:last-child:after {
  content: "";
}

.breadcrumb ul li a {
  color: var(--light-text);
  text-decoration: none;
}

.breadcrumb ul li a:hover {
  color: var(--primary-color);
}

.breadcrumb ul li:last-child a {
  color: var(--primary-color);
  font-weight: 500;
}

/* 英雄区域 */
.hero {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  padding: 80px 0;
  text-align: center;
}

.hero h2 {
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.hero p {
  font-size: 1.2rem;
  max-width: 700px;
  margin: 0 auto 30px;
}

/* 通用按钮样式 */
.cta-button {
  display: inline-block;
  background-color: white;
  color: var(--primary-color);
  padding: 12px 30px;
  border-radius: 30px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1rem;
  transition: all 0.3s;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

.download-btn {
  display: inline-block;
  background-color: var(--primary-color);
  color: white;
  padding: 12px 25px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: 500;
  transition: background-color 0.3s;
  width: 100%;
  text-align: center;
}

.download-btn:hover {
  background-color: var(--dark-color);
}

/* 通用卡片样式 */
.platform-card,
.feature-card,
.compliance-item,
.faq-item,
.news-card,
.instruction-card,
.contact-card,
.document-card,
.category-card,
.case-card,
.integration-item,
.region-card,
.protection-card {
  background-color: white;
  border-radius: 10px;
  padding: 25px 30px;
  box-shadow: 0 3px 10px rgba(0,0,0,0.05);
  transition: transform 0.3s;
}

.platform-card:hover,
.feature-card:hover,
.news-card:hover,
.document-card:hover,
.category-card:hover,
.case-card:hover,
.integration-item:hover {
  transform: translateY(-5px);
}

/* 通用标题样式 */
.section-title {
  text-align: center;
  margin-bottom: 40px;
  color: var(--dark-color);
}

/* ===== 下载页面特定样式 ===== */

/* 下载区域 */
.download-section {
  background-color: white;
  padding: 60px 0;
}

.platforms {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 30px;
}

.platform-card {
  width: 250px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.platform-icon {
  font-size: 48px;
  margin-bottom: 20px;
  color: var(--primary-color);
}

.platform-name {
  font-size: 1.3rem;
  margin-bottom: 15px;
  color: var(--dark-color);
}

.platform-info {
  margin-bottom: 20px;
  font-size: 0.9rem;
  color: var(--light-text);
  flex-grow: 1;
}

.download-size {
  font-size: 0.8rem;
  color: var(--light-text);
  margin-top: 10px;
}

/* 下载说明部分 */
.instructions {
  padding: 60px 0;
  background-color: #f5f7ff;
}

.instructions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.instruction-icon {
  font-size: 36px;
  margin-bottom: 20px;
  color: var(--primary-color);
}

.instruction-title {
  font-size: 1.2rem;
  margin-bottom: 15px;
  color: var(--dark-color);
}

/* 系统要求部分 */
.requirements {
  padding: 60px 0;
  background-color: white;
}

.requirements-content {
  max-width: 800px;
  margin: 0 auto;
}

.requirement-item {
  margin-bottom: 30px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 20px;
}

.requirement-title {
  font-size: 1.2rem;
  margin-bottom: 15px;
  color: var(--dark-color);
}

.requirement-list {
  list-style-type: none;
}

.requirement-list li {
  margin-bottom: 8px;
  padding-left: 20px;
  position: relative;
}

.requirement-list li:before {
  content: "•";
  color: var(--primary-color);
  position: absolute;
  left: 0;
}

/* ===== 功能页面特定样式 ===== */

/* 功能概览部分 */
.features-overview {
  padding: 60px 0;
  background-color: white;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.feature-icon {
  font-size: 48px;
  margin-bottom: 20px;
  color: var(--primary-color);
}

.feature-name {
  font-size: 1.3rem;
  margin-bottom: 15px;
  color: var(--dark-color);
}

/* 功能详情部分 */
.feature-details {
  padding: 60px 0;
  background-color: #f5f7ff;
}

.feature-tabs {
  display: flex;
  flex-wrap: wrap;
  margin-bottom: 30px;
  border-bottom: 1px solid var(--border-color);
}

.tab-btn {
  padding: 12px 25px;
  background: none;
  border: none;
  font-size: 1rem;
  font-weight: 500;
  color: var(--light-text);
  cursor: pointer;
  transition: all 0.3s;
  border-bottom: 3px solid transparent;
}

.tab-btn.active {
  color: var(--primary-color);
  border-bottom: 3px solid var(--primary-color);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: 15px;
}

.feature-item-icon {
  color: var(--success-color);
  margin-right: 10px;
  font-size: 18px;
  flex-shrink: 0;
}

/* 使用场景部分 */
.use-cases {
  padding: 60px 0;
  background-color: white;
}

.cases-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.case-image {
  height: 180px;
  background-color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 48px;
}

.case-title {
  font-size: 1.2rem;
  margin-bottom: 15px;
  color: var(--dark-color);
}

/* 集成部分 */
.integrations {
  padding: 60px 0;
  background-color: #f5f7ff;
}

.integrations-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 20px;
}

.integration-icon {
  font-size: 36px;
  margin-bottom: 10px;
  color: var(--primary-color);
}

/* ===== 合规性页面特定样式 ===== */

/* 合规性概览部分 */
.compliance-overview {
  padding: 60px 0;
  background-color: white;
}

.overview-content {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.overview-content p {
  margin-bottom: 30px;
  font-size: 1.1rem;
}

.compliance-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 30px;
  margin-top: 40px;
}

.badge {
  background-color: var(--light-color);
  border-radius: 10px;
  padding: 25px;
  width: 150px;
  text-align: center;
}

.badge-icon {
  font-size: 48px;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.badge-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--dark-color);
}

/* 合规性标准部分 */
.standards-section {
  padding: 60px 0;
  background-color: #f5f7ff;
}

.standard-detail {
  background-color: white;
  border-radius: 10px;
  padding: 30px;
}

.standard-header {
  display: flex;
  align-items: center;
  margin-bottom: 20px;
}

.standard-icon {
  font-size: 36px;
  margin-right: 15px;
  color: var(--primary-color);
}

.standard-title {
  font-size: 1.5rem;
  color: var(--dark-color);
}

.standard-description {
  margin-bottom: 25px;
  font-size: 1.1rem;
}

.standard-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

/* 数据保护部分 */
.data-protection {
  padding: 60px 0;
  background-color: white;
}

.protection-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.protection-icon {
  font-size: 48px;
  margin-bottom: 20px;
  color: var(--primary-color);
}

.protection-title {
  font-size: 1.3rem;
  margin-bottom: 15px;
  color: var(--dark-color);
}

/* 区域合规性部分 */
.regional-compliance {
  padding: 60px 0;
  background-color: #f5f7ff;
}

.regions-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.region-header {
  display: flex;
  align-items: center;
  margin-bottom: 20px;
}

.region-flag {
  font-size: 32px;
  margin-right: 15px;
}

.region-title {
  font-size: 1.3rem;
  color: var(--dark-color);
}

.region-standards {
  list-style-type: none;
}

.region-standards li {
  margin-bottom: 10px;
  padding-left: 20px;
  position: relative;
}

.region-standards li:before {
  content: "•";
  color: var(--primary-color);
  position: absolute;
  left: 0;
}

/* 法律文档部分 */
.legal-documents {
  padding: 60px 0;
  background-color: white;
}

.documents-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.document-icon {
  font-size: 36px;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.document-title {
  font-size: 1.1rem;
  margin-bottom: 10px;
  color: var(--dark-color);
}

.document-link {
  display: inline-block;
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  margin-top: 10px;
}

.document-link:hover {
  text-decoration: underline;
}

/* ===== FAQ页面特定样式 ===== */

/* 搜索区域 */
.search-section {
  padding: 40px 0;
  background-color: white;
}

.search-container {
  max-width: 700px;
  margin: 0 auto;
}

.search-box {
  display: flex;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
  border-radius: 50px;
  overflow: hidden;
}

.search-input {
  flex-grow: 1;
  padding: 15px 25px;
  border: none;
  font-size: 1rem;
  outline: none;
}

.search-button {
  background-color: var(--primary-color);
  color: white;
  border: none;
  padding: 0 30px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.search-button:hover {
  background-color: var(--dark-color);
}

.search-tips {
  text-align: center;
  margin-top: 15px;
  color: var(--light-text);
  font-size: 0.9rem;
}

/* FAQ分类部分 */
.faq-categories {
  padding: 40px 0;
  background-color: #f5f7ff;
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.category-icon {
  font-size: 36px;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.category-title {
  font-size: 1.2rem;
  margin-bottom: 10px;
  color: var(--dark-color);
}

.category-count {
  color: var(--light-text);
  font-size: 0.9rem;
}

/* FAQ列表部分 */
.faq-section {
  padding: 60px 0;
  background-color: white;
}

.faq-category-title {
  font-size: 1.8rem;
  margin-bottom: 30px;
  color: var(--dark-color);
  display: flex;
  align-items: center;
}

.faq-category-icon {
  margin-right: 15px;
  font-size: 28px;
}

.faq-list {
  margin-bottom: 50px;
}

.faq-item {
  margin-bottom: 15px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
}

.faq-question {
  padding: 20px;
  background-color: var(--light-color);
  font-weight: 600;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color 0.3s;
}

.faq-question:hover {
  background-color: #e8ebf7;
}

.faq-answer {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-answer.active {
  padding: 20px;
  max-height: 1000px;
}

.faq-answer p {
  margin-bottom: 15px;
}

.faq-answer ul, .faq-answer ol {
  margin-left: 20px;
  margin-bottom: 15px;
}

.faq-answer li {
  margin-bottom: 8px;
}

/* 联系支持部分 */
.contact-support {
  padding: 60px 0;
  background-color: #f5f7ff;
}

.contact-container {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.contact-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.contact-icon {
  font-size: 36px;
  margin-bottom: 20px;
  color: var(--primary-color);
}

.contact-title {
  font-size: 1.2rem;
  margin-bottom: 15px;
  color: var(--dark-color);
}

.contact-button {
  display: inline-block;
  background-color: var(--primary-color);
  color: white;
  padding: 10px 20px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: 500;
  transition: background-color 0.3s;
  margin-top: 10px;
}

.contact-button:hover {
  background-color: var(--dark-color);
}

/* ===== 资讯页面特定样式 ===== */

/* 资讯列表页 */
.news-section {
  padding: 60px 0;
  background-color: white;
}

.news-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.filter-btn {
  background: none;
  border: 1px solid var(--border-color);
  padding: 8px 16px;
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.3s;
  font-size: 0.9rem;
}

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

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 30px;
}

.news-card {
  overflow: hidden;
}

.news-image {
  height: 200px;
  background-color: var(--light-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  font-size: 48px;
}

.news-content {
  padding: 25px;
}

.news-category {
  display: inline-block;
  background-color: var(--light-color);
  color: var(--primary-color);
  padding: 5px 10px;
  border-radius: 5px;
  font-size: 0.8rem;
  font-weight: 500;
  margin-bottom: 15px;
}

.news-title {
  font-size: 1.3rem;
  margin-bottom: 15px;
  color: var(--dark-color);
  line-height: 1.4;
}

.news-excerpt {
  color: var(--light-text);
  margin-bottom: 20px;
}

.news-meta {
  display: flex;
  justify-content: space-between;
  color: var(--light-text);
  font-size: 0.9rem;
}

.read-more {
  display: inline-block;
  color: var(--primary-color);
  font-weight: 500;
  text-decoration: none;
  margin-top: 15px;
}

.read-more:hover {
  text-decoration: underline;
}

.pagination {
  display: flex;
  justify-content: center;
  margin-top: 50px;
}

.pagination a {
  display: inline-block;
  padding: 8px 16px;
  margin: 0 5px;
  border: 1px solid var(--border-color);
  border-radius: 5px;
  text-decoration: none;
  color: var(--text-color);
  transition: all 0.3s;
}

.pagination a:hover, .pagination a.active {
  background-color: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

/* 资讯详情页 */
.article-section {
  padding: 60px 0;
  background-color: white;
}

.article-header {
  margin-bottom: 40px;
  text-align: center;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.article-title {
  font-size: 2.2rem;
  margin-bottom: 20px;
  color: var(--dark-color);
  line-height: 1.3;
}

.article-meta {
  display: flex;
  justify-content: center;
  gap: 20px;
  color: var(--light-text);
  margin-bottom: 30px;
}

.article-image {
  height: 400px;
  background-color: var(--light-color);
  border-radius: 10px;
  margin-bottom: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  font-size: 72px;
}

.article-content {
  max-width: 800px;
  margin: 0 auto;
}

.article-content h2 {
  font-size: 1.8rem;
  margin: 40px 0 20px;
  color: var(--dark-color);
}

.article-content h3 {
  font-size: 1.4rem;
  margin: 30px 0 15px;
  color: var(--dark-color);
}

.article-content p {
  margin-bottom: 20px;
}

.article-content ul, .article-content ol {
  margin-left: 20px;
  margin-bottom: 20px;
}

.article-content li {
  margin-bottom: 10px;
}

.article-content blockquote {
  border-left: 4px solid var(--primary-color);
  padding-left: 20px;
  margin: 30px 0;
  font-style: italic;
  color: var(--light-text);
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 40px 0;
}

.tag {
  background-color: var(--light-color);
  color: var(--primary-color);
  padding: 5px 10px;
  border-radius: 5px;
  font-size: 0.9rem;
}

.article-navigation {
  display: flex;
  justify-content: space-between;
  margin-top: 50px;
  padding-top: 30px;
  border-top: 1px solid var(--border-color);
}

.nav-button {
  display: inline-flex;
  align-items: center;
  padding: 10px 20px;
  background-color: var(--light-color);
  color: var(--primary-color);
  text-decoration: none;
  border-radius: 5px;
  transition: background-color 0.3s;
}

.nav-button:hover {
  background-color: #e8ebf7;
}

.related-articles {
  padding: 60px 0;
  background-color: #f5f7ff;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

/* ===== 页脚样式 ===== */
footer {
  background-color: var(--dark-color);
  color: white;
  padding: 50px 0 20px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
  margin-bottom: 30px;
}

.footer-column h3 {
  margin-bottom: 20px;
  font-size: 1.2rem;
}

.footer-column ul {
  list-style: none;
}

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

.footer-column ul li a {
  color: #ccc;
  text-decoration: none;
  transition: color 0.3s;
}

.footer-column ul li a:hover {
  color: white;
}

.copyright {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.1);
  color: #aaa;
  font-size: 0.9rem;
}

/* ===== 响应式设计 ===== */
@media (max-width: 768px) {
  nav {
    display: none;
  }
  
  .mobile-menu {
    display: block;
  }
  
  .hero h2 {
    font-size: 2rem;
  }
  
  /* 下载页面响应式 */
  .platform-card {
    width: 100%;
    max-width: 300px;
  }
  
  /* 功能页面响应式 */
  .feature-tabs {
    flex-direction: column;
  }
  
  .tab-btn {
    width: 100%;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
  }
  
  .tab-btn.active {
    border-bottom: 1px solid var(--primary-color);
  }
  
  /* 资讯页面响应式 */
  .news-grid {
    grid-template-columns: 1fr;
  }
  
  .article-title {
    font-size: 1.8rem;
  }
  
  .article-image {
    height: 250px;
  }
  
  .article-navigation {
    flex-direction: column;
    gap: 15px;
  }
  
  .related-grid {
    grid-template-columns: 1fr;
  }
  
  /* FAQ页面响应式 */
  .search-box {
    flex-direction: column;
    border-radius: 10px;
  }
  
  .search-input {
    padding: 15px;
  }
  
  .search-button {
    padding: 15px;
  }
  
  .faq-category-title {
    font-size: 1.5rem;
  }
}