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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #333;
  background: #f5f5f5;
}

/* Header */
header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 40px 20px;
  text-align: center;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

header .logo {
  max-width: 150px;
  margin-bottom: 20px;
}

header h1 {
  font-size: 32px;
  margin-bottom: 15px;
  font-weight: bold;
}

header p {
  font-size: 18px;
  opacity: 0.9;
}

/* 锚点导航 */
#nav {
  background: white;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  position: sticky;
  top: 0;
  z-index: 100;
}

#nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0;
}

#nav li {
  margin: 0;
}

#nav a {
  display: block;
  padding: 15px 25px;
  text-decoration: none;
  color: #333;
  font-weight: 600;
  transition: all 0.3s;
  border-bottom: 3px solid transparent;
}

#nav a:hover {
  color: #667eea;
  border-bottom-color: #667eea;
  background: #f8f9fa;
}

/* Main容器 */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

/* 通用Section样式 */
section {
  background: white;
  margin: 30px 0;
  padding: 40px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

section h2 {
  font-size: 28px;
  color: #2c3e50;
  margin-bottom: 25px;
  padding-bottom: 15px;
  border-bottom: 3px solid #667eea;
}

section p {
  margin-bottom: 15px;
  line-height: 1.8;
  text-align: justify;
}

section strong {
  color: #667eea;
  font-weight: 600;
}

/* About区域左右布局 */
.about {
  background: linear-gradient(to bottom, #fff 0%, #f8f9fa 100%);
}

.about-container {
  display: flex;
  gap: 40px;
  align-items: center;
}

.about-content {
  flex: 1;
}

.about-image {
  flex: 0 0 300px;
}

.keyword-image {
  width: 300px;
  height: 300px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
  position: relative;
  overflow: hidden;
}

.keyword-image::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  animation: rotate 20s linear infinite;
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.keyword-text {
  font-size: 48px;
  font-weight: bold;
  color: white;
  text-align: center;
  word-wrap: break-word;
  padding: 20px;
  z-index: 1;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

/* 搜索链接区域 */
.baidu-search {
  background: #f8f9fa;
}

.search-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 15px;
  margin: 25px 0;
}

.search-links a {
  display: block;
  padding: 15px 20px;
  background: white;
  border: 2px solid #e0e0e0;
  border-radius: 6px;
  text-decoration: none;
  color: #333;
  font-weight: 600;
  transition: all 0.3s;
  text-align: center;
}

.search-links a:hover {
  border-color: #667eea;
  background: #667eea;
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

/* 文章列表 */
.articles article {
  padding: 25px 0;
  border-bottom: 1px solid #e0e0e0;
}

.articles article:last-child {
  border-bottom: none;
}

.articles h3 {
  font-size: 20px;
  margin-bottom: 12px;
}

.articles h3 a {
  color: #2c3e50;
  text-decoration: none;
  transition: color 0.3s;
}

.articles h3 a:hover {
  color: #667eea;
}

.articles .meta {
  display: flex;
  gap: 20px;
  color: #666;
  font-size: 14px;
  margin-top: 10px;
}

/* 目录区域 */
.directory ul {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 12px;
  margin: 20px 0;
}

.directory li {
  padding: 12px 15px;
  background: #f8f9fa;
  border-left: 4px solid #667eea;
  border-radius: 4px;
  transition: all 0.3s;
}

.directory li:hover {
  background: #e9ecef;
  transform: translateX(5px);
}

.directory a {
  color: #333;
  text-decoration: none;
}

.directory a:hover {
  color: #667eea;
}

/* Footer */
footer {
  background: #2c3e50;
  color: white;
  padding: 40px 20px;
  margin-top: 50px;
}

footer nav {
  display: flex;
  justify-content: center;
  gap: 30px;
  margin: 20px 0;
  flex-wrap: wrap;
}

footer nav a {
  color: white;
  text-decoration: none;
  transition: color 0.3s;
}

footer nav a:hover {
  color: #667eea;
}

footer p {
  text-align: center;
  margin-top: 20px;
  opacity: 0.8;
}

/* 分享按钮 */
.share-buttons {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin: 30px 0;
  flex-wrap: wrap;
}

.share-buttons a {
  padding: 10px 20px;
  background: #667eea;
  color: white;
  text-decoration: none;
  border-radius: 25px;
  transition: all 0.3s;
  font-weight: 600;
}

.share-buttons a:hover {
  background: #764ba2;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

/* 响应式 */
@media (max-width: 768px) {
  header h1 {
    font-size: 24px;
  }
  
  section {
    padding: 25px 20px;
  }
  
  section h2 {
    font-size: 22px;
  }
  
  #nav a {
    padding: 12px 15px;
    font-size: 14px;
  }
  
  .about-container {
    flex-direction: column;
  }
  
  .about-image {
    flex: 0 0 auto;
    width: 100%;
  }
  
  .keyword-image {
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
  }
  
  .keyword-text {
    font-size: 36px;
  }
  
  .search-links {
    grid-template-columns: 1fr;
  }
  
  .directory ul {
    grid-template-columns: 1fr;
  }
}

/* 顶部欢迎栏 */
.top-welcome {
  background: #2c3e50;
  color: white;
  padding: 10px 0;
  font-size: 14px;
}

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

.mk-top-welcome-left {
  text-align: center;
}

.mk-top-sc {
  color: #ffd700;
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s;
}

.mk-top-sc:hover {
  color: #ffed4e;
  text-decoration: underline;
}

.top-welcome strong {
  color: #ffd700;
}

/* 百度分享样式 */
.bdsharebuttonbox {
  text-align: center;
  margin: 30px 0 20px;
  padding: 20px;
  background: rgba(255,255,255,0.1);
  border-radius: 8px;
}

.bdsharebuttonbox span {
  color: white;
  margin-right: 15px;
  font-weight: 600;
}

.bdsharebuttonbox a {
  display: inline-block;
  padding: 8px 15px;
  margin: 5px;
  background: rgba(255,255,255,0.2);
  color: white;
  text-decoration: none;
  border-radius: 4px;
  transition: all 0.3s;
}

.bdsharebuttonbox a:hover {
  background: rgba(255,255,255,0.3);
  transform: translateY(-2px);
}

/* FAQ常见问题 */
.faq {
  background: linear-gradient(to bottom, #fff 0%, #f0f4ff 100%);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.faq-item {
  background: white;
  border-radius: 8px;
  padding: 25px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  border-left: 4px solid #667eea;
  transition: all 0.3s;
}

.faq-item:hover {
  transform: translateX(5px);
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.15);
}

.faq-question {
  font-size: 18px;
  color: #2c3e50;
  margin-bottom: 15px;
  display: flex;
  align-items: center;
}

.faq-question::before {
  content: 'Q';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: #667eea;
  color: white;
  border-radius: 50%;
  font-weight: bold;
  font-size: 14px;
  margin-right: 12px;
  flex-shrink: 0;
}

.faq-answer {
  padding-left: 40px;
  color: #555;
  line-height: 1.8;
}

.faq-answer p {
  margin: 0;
}

@media (max-width: 768px) {
  .faq-item {
    padding: 20px 15px;
  }
  
  .faq-question {
    font-size: 16px;
  }
  
  .faq-answer {
    padding-left: 0;
    margin-top: 10px;
  }
}

/* 文章页样式 */
.article-header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 30px 20px;
  text-align: center;
}

.article-header h1 a {
  color: white;
  text-decoration: none;
}

.article-main {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
}

.article-detail {
  background: white;
  padding: 40px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  margin-bottom: 30px;
}

.article-title {
  font-size: 28px;
  color: #2c3e50;
  margin-bottom: 20px;
  line-height: 1.4;
  border-bottom: 3px solid #667eea;
  padding-bottom: 15px;
}

.article-meta {
  display: flex;
  gap: 20px;
  color: #666;
  font-size: 14px;
  margin-bottom: 25px;
  padding-bottom: 15px;
  border-bottom: 1px solid #eee;
}

.article-introduction {
  background: linear-gradient(to right, #f0f4ff, #fff);
  padding: 20px;
  border-radius: 8px;
  margin-bottom: 25px;
  border-left: 4px solid #667eea;
}

.article-introduction strong {
  color: #667eea;
  display: block;
  margin-bottom: 10px;
}

.article-introduction p {
  margin: 0;
  color: #555;
  line-height: 1.8;
}

.article-content {
  font-size: 16px;
  line-height: 2;
  color: #333;
  text-align: justify;
}

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

.article-tags {
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid #eee;
}

.tags-label {
  color: #666;
  margin-right: 10px;
}

.tag {
  display: inline-block;
  padding: 5px 12px;
  background: #f0f4ff;
  color: #667eea;
  border-radius: 15px;
  font-size: 13px;
  margin: 5px 5px 5px 0;
  transition: all 0.3s;
}

.tag:hover {
  background: #667eea;
  color: white;
}

.article-comments {
  background: white;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  margin-bottom: 30px;
}

.article-comments h3 {
  font-size: 20px;
  color: #2c3e50;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid #667eea;
}

.comment-item {
  padding: 15px 0;
  border-bottom: 1px solid #eee;
}

.comment-item:last-child {
  border-bottom: none;
}

.comment-item p {
  margin: 0 0 10px;
  color: #333;
  line-height: 1.6;
}

.comment-time {
  color: #999;
  font-size: 12px;
}

/* 文章页分享按钮 */
.article-main .share-buttons {
  background: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  text-align: center;
}

.article-main .share-buttons span {
  color: #666;
  margin-right: 15px;
}

@media (max-width: 768px) {
  .article-detail {
    padding: 25px 20px;
  }
  
  .article-title {
    font-size: 22px;
  }
  
  .article-meta {
    flex-direction: column;
    gap: 10px;
  }
  
  .article-content {
    font-size: 15px;
    line-height: 1.8;
  }
}

/* 文章图片样式 - 百度SEO优化 121:75比例 */
.article-image {
  margin: 25px 0;
  text-align: center;
}

.seo-image {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.image-caption {
  margin-top: 10px;
  color: #666;
  font-size: 14px;
  text-align: center;
}

@media (max-width: 768px) {
  .seo-image {
    width: 100%;
    height: auto;
  }
}

/* 首页关键词图片SEO优化 */
.keyword-image {
  position: relative;
}

.keyword-bg-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 12px;
  opacity: 0.7;
}

.keyword-text {
  position: relative;
  z-index: 2;
}

/* 文章列表缩略图 */
.article-item {
  display: flex;
  gap: 15px;
  align-items: flex-start;
}

.article-thumb {
  flex-shrink: 0;
}

.article-thumb img {
  width: 150px;
  height: 100px;
  object-fit: cover;
  border-radius: 8px;
}

.article-info {
  flex: 1;
}

@media (max-width: 768px) {
  .article-item {
    flex-direction: column;
  }
  .article-thumb img {
    width: 100%;
    height: auto;
  }
}

/* 用户评价九宫格 */
.reviews {
  padding: 40px 20px;
  background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
}

.reviews h2 {
  text-align: center;
  margin-bottom: 30px;
  color: #333;
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.review-card {
  background: white;
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.08);
  transition: transform 0.3s, box-shadow 0.3s;
}

.review-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.12);
}

.review-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.review-avatar {
  font-size: 32px;
}

.review-name {
  font-weight: bold;
  color: #333;
  flex: 1;
}

.review-rating {
  font-size: 12px;
}

.review-content {
  color: #666;
  font-size: 14px;
  line-height: 1.6;
  margin: 0;
}

@media (max-width: 992px) {
  .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .reviews-grid {
    grid-template-columns: 1fr;
  }
}

/* 服务流程4宫格 */
.services {
  padding: 40px 20px;
  background: white;
}

.services h2 {
  text-align: center;
  margin-bottom: 30px;
  color: #333;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.service-card {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 12px;
  padding: 25px 15px;
  text-align: center;
  color: white;
  position: relative;
  transition: transform 0.3s, box-shadow 0.3s;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.2);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.service-number {
  position: absolute;
  top: 10px;
  right: 15px;
  background: rgba(255,255,255,0.3);
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 14px;
}

.service-icon {
  font-size: 48px;
  margin-bottom: 15px;
}

.service-title {
  font-size: 18px;
  font-weight: bold;
  margin-bottom: 10px;
}

.service-description {
  font-size: 14px;
  line-height: 1.5;
  opacity: 0.95;
  margin: 0;
}

@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .services-grid {
    grid-template-columns: 1fr;
  }
}

/* 平台数据统计 */
.stats {
  padding: 50px 20px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.stats-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
}

.stat-item {
  text-align: center;
  color: white;
}

.stat-number {
  font-size: 48px;
  font-weight: bold;
  margin-bottom: 10px;
  text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.stat-label {
  font-size: 18px;
  opacity: 0.95;
}

@media (max-width: 768px) {
  .stats-container {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .stat-number {
    font-size: 36px;
  }
  
  .stat-label {
    font-size: 16px;
  }
}

/* 推荐模块 */
.recommend {
  padding: 40px 20px;
  background: white;
}

.recommend h2 {
  text-align: center;
  margin-bottom: 30px;
  color: #333;
}

.recommend-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.recommend-card {
  background: #f8f9fa;
  border-radius: 12px;
  padding: 20px;
  border-left: 4px solid #667eea;
  transition: transform 0.3s, box-shadow 0.3s;
}

.recommend-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}

.recommend-title {
  font-size: 16px;
  font-weight: bold;
  color: #333;
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 2px solid #667eea;
}

.recommend-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.recommend-item {
  padding: 8px 0;
  border-bottom: 1px solid #e0e0e0;
}

.recommend-item:last-child {
  border-bottom: none;
}

.recommend-item a {
  color: #555;
  text-decoration: none;
  font-size: 14px;
  line-height: 1.6;
  display: block;
  transition: color 0.3s;
}

.recommend-item a:hover {
  color: #667eea;
  font-weight: bold;
}

@media (max-width: 1024px) {
  .recommend-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .recommend-grid {
    grid-template-columns: 1fr;
  }
}