/* 基础样式 */
:root {
  --primary-color: #4CAF50;
  --secondary-color: #8BC34A;
  --accent-color: #FF9800;
  --text-color: #333333;
  --light-text: #ffffff;
  --background-color: #f9f9f9;
  --card-bg: #ffffff;
  --border-color: #e0e0e0;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --radius: 8px;
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Helvetica Neue', Arial, sans-serif;
  color: var(--text-color);
  background-color: var(--background-color);
  line-height: 1.6;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

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

a:hover {
  color: var(--accent-color);
}

ul {
  list-style: none;
}

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

section {
  padding: 60px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 40px;
}

.section-header h2 {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 10px;
}

.section-header p {
  font-size: 1.1rem;
  color: #666;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-weight: bold;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background-color: var(--primary-color);
  color: var(--light-text);
}

.btn-primary:hover {
  background-color: var(--accent-color);
  color: var(--light-text);
}

.btn-secondary {
  background-color: var(--secondary-color);
  color: var(--light-text);
}

.btn-secondary:hover {
  background-color: var(--accent-color);
  color: var(--light-text);
}

/* 渐变框样式 */
.gradient-box {
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  border-radius: var(--radius);
  height: 300px;
  width: 100%;
}

.gradient-box-1 {
  background: linear-gradient(135deg, #FF5722, #FFC107);
  border-radius: var(--radius);
  height: 240px;
  width: 100%;
}

.gradient-box-2 {
  background: linear-gradient(135deg, #2196F3, #00BCD4);
  border-radius: var(--radius);
  height: 240px;
  width: 100%;
}

.gradient-box-3 {
  background: linear-gradient(135deg, #673AB7, #3F51B5);
  border-radius: var(--radius);
  height: 240px;
  width: 100%;
}

.gradient-box-4 {
  background: linear-gradient(135deg, #E91E63, #9C27B0);
  border-radius: var(--radius);
  height: 240px;
  width: 100%;
}

.gradient-box-5 {
  background: linear-gradient(135deg, #4CAF50, #8BC34A);
  border-radius: var(--radius);
  height: 120px;
  width: 100%;
}

.gradient-box-6 {
  background: linear-gradient(135deg, #FF9800, #FF5722);
  border-radius: var(--radius);
  height: 120px;
  width: 100%;
}

.gradient-box-7 {
  background: linear-gradient(135deg, #00BCD4, #03A9F4);
  border-radius: var(--radius);
  height: 120px;
  width: 100%;
}

.gradient-box-8 {
  background: linear-gradient(135deg, #9C27B0, #673AB7);
  border-radius: var(--radius);
  height: 120px;
  width: 100%;
}

.gradient-box-9 {
  background: linear-gradient(135deg, #F44336, #E91E63);
  border-radius: var(--radius);
  height: 80px;
  width: 80px;
  margin: 0 auto 15px;
}

.gradient-box-10 {
  background: linear-gradient(135deg, #3F51B5, #2196F3);
  border-radius: var(--radius);
  height: 80px;
  width: 80px;
  margin: 0 auto 15px;
}

.gradient-box-11 {
  background: linear-gradient(135deg, #E91E63, #F44336);
  border-radius: var(--radius);
  height: 80px;
  width: 80px;
  margin: 0 auto 15px;
}

.gradient-box-12 {
  background: linear-gradient(135deg, #673AB7, #9C27B0);
  border-radius: var(--radius);
  height: 80px;
  width: 80px;
  margin: 0 auto 15px;
}

.gradient-box-13 {
  background: linear-gradient(135deg, #FFC107, #FF9800);
  border-radius: var(--radius);
  height: 80px;
  width: 80px;
  margin: 0 auto 15px;
}

.gradient-box-14 {
  background: linear-gradient(135deg, #00BCD4, #009688);
  border-radius: var(--radius);
  height: 80px;
  width: 80px;
  margin: 0 auto 15px;
}

.gradient-box-15 {
  background: linear-gradient(135deg, #FF5722, #F44336);
  border-radius: var(--radius);
  height: 80px;
  width: 80px;
  margin: 0 auto 15px;
}

.gradient-box-16 {
  background: linear-gradient(135deg, #795548, #5D4037);
  border-radius: var(--radius);
  height: 80px;
  width: 80px;
  margin: 0 auto 15px;
}

.gradient-box-17 {
  background: linear-gradient(135deg, #FF9800, #F44336);
  border-radius: var(--radius);
  height: 100px;
  width: 100px;
}

.gradient-box-18 {
  background: linear-gradient(135deg, #4CAF50, #009688);
  border-radius: var(--radius);
  height: 100px;
  width: 100px;
}

.gradient-box-19 {
  background: linear-gradient(135deg, #2196F3, #673AB7);
  border-radius: var(--radius);
  height: 100px;
  width: 100px;
}

.gradient-box-20 {
  background: linear-gradient(135deg, #9C27B0, #E91E63);
  border-radius: var(--radius);
  height: 200px;
  width: 100%;
}

.gradient-box-21 {
  background: linear-gradient(135deg, #00BCD4, #4CAF50);
  border-radius: var(--radius);
  height: 200px;
  width: 100%;
}

.gradient-box-22 {
  background: linear-gradient(135deg, #FFC107, #FF5722);
  border-radius: var(--radius);
  height: 200px;
  width: 100%;
}

.gradient-box-23 {
  background: linear-gradient(135deg, #4CAF50, #2196F3);
  border-radius: var(--radius);
  height: 300px;
  width: 100%;
}

/* 头部样式 */
.header {
  background-color: var(--card-bg);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 15px 0;
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo h1 {
  font-size: 1.5rem;
  color: var(--primary-color);
}

.main-nav ul {
  display: flex;
}

.main-nav li {
  margin-left: 20px;
}

.main-nav a {
  color: var(--text-color);
  font-weight: 500;
}

.main-nav a:hover {
  color: var(--primary-color);
}

/* 横幅样式 */
.banner {
  background-color: var(--primary-color);
  color: var(--light-text);
  padding: 80px 0;
}

.banner-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.banner-text {
  flex: 1;
  padding-right: 40px;
}

.banner-text h2 {
  font-size: 2.8rem;
  margin-bottom: 20px;
}

.banner-text p {
  font-size: 1.2rem;
  margin-bottom: 30px;
}

.banner-image {
  flex: 1;
}

.banner-buttons {
  display: flex;
  gap: 15px;
}

/* 热门漫画样式 */
.manga-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 30px;
}

.manga-card {
  background-color: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.manga-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.manga-info {
  padding: 20px;
}

.manga-info h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
  color: var(--primary-color);
}

.manga-author, .manga-tags {
  color: #666;
  font-size: 0.9rem;
  margin-bottom: 10px;
}

.manga-desc {
  margin-bottom: 15px;
  font-size: 0.95rem;
}

.read-btn {
  display: inline-block;
  padding: 8px 15px;
  background-color: var(--primary-color);
  color: var(--light-text);
  border-radius: var(--radius);
  font-size: 0.9rem;
}

.read-btn:hover {
  background-color: var(--accent-color);
  color: var(--light-text);
}

/* 最新更新样式 */
.update-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.update-item {
  display: flex;
  background-color: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  padding: 15px;
  transition: var(--transition);
}

.update-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.12);
}

.update-cover {
  flex: 0 0 120px;
  margin-right: 15px;
}

.update-info {
  flex: 1;
}

.update-info h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--primary-color);
}

.update-chapter, .update-time {
  font-size: 0.85rem;
  color: #666;
  margin-bottom: 8px;
}

/* 分类阅读样式 */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}

.category-item {
  background-color: var(--card-bg);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.category-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.category-item h3 {
  font-size: 1.2rem;
  margin: 15px 0 10px;
  color: var(--primary-color);
}

.category-item p {
  font-size: 0.9rem;
  color: #666;
}

/* 排行榜样式 */
.ranking-tabs {
  background-color: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.tab-header {
  display: flex;
  background-color: #f0f0f0;
}

.tab-btn {
  flex: 1;
  padding: 15px;
  border: none;
  background: none;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  transition: var(--transition);
}

.tab-btn.active {
  background-color: var(--primary-color);
  color: var(--light-text);
}

.tab-content {
  padding: 20px;
}

.tab-pane {
  display: none;
}

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

.ranking-item {
  display: flex;
  align-items: center;
  padding: 15px 0;
  border-bottom: 1px solid var(--border-color);
}

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

.ranking-num {
  flex: 0 0 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--primary-color);
  color: var(--light-text);
  border-radius: 50%;
  font-weight: bold;
  margin-right: 15px;
}

.ranking-cover {
  flex: 0 0 100px;
  margin-right: 15px;
}

.ranking-info {
  flex: 1;
}

.ranking-info h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--primary-color);
}

.ranking-author, .ranking-desc {
  font-size: 0.9rem;
  color: #666;
}

/* 编辑推荐样式 */
.recommend-slider {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 30px;
}

.recommend-item {
  background-color: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.recommend-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.recommend-info {
  padding: 20px;
}

.recommend-info h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
  color: var(--primary-color);
}

.recommend-tags {
  color: #666;
  font-size: 0.9rem;
  margin-bottom: 10px;
}

.recommend-desc {
  margin-bottom: 15px;
  font-size: 0.95rem;
}

/* 文章样式 */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 30px;
}

.article-card {
  background-color: var(--card-bg);
  border-radius: var(--radius);
  padding: 25px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.article-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.article-card h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
  color: var(--primary-color);
}

.article-meta {
  font-size: 0.85rem;
  color: #888;
  margin-bottom: 15px;
}

.article-card p {
  font-size: 0.95rem;
  line-height: 1.7;
}

/* 关于我们样式 */
.about-content {
  display: flex;
  align-items: center;
  gap: 40px;
}

.about-text {
  flex: 1;
}

.about-text p {
  margin-bottom: 15px;
  font-size: 1rem;
  line-height: 1.7;
}

.about-image {
  flex: 1;
}

/* 页脚样式 */
.footer {
  background-color: #333;
  color: #fff;
  padding: 60px 0 20px;
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.footer-logo {
  flex: 1 1 100%;
  margin-bottom: 30px;
}

.footer-logo h3 {
  font-size: 1.5rem;
  margin-bottom: 10px;
  color: var(--accent-color);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  width: 100%;
}

.footer-links-column {
  flex: 1 1 200px;
  margin-bottom: 20px;
}

.footer-links-column h4 {
  font-size: 1.1rem;
  margin-bottom: 15px;
  color: var(--accent-color);
}

.footer-links-column ul li {
  margin-bottom: 8px;
}

.footer-links-column a {
  color: #ccc;
  font-size: 0.9rem;
}

.footer-links-column a:hover {
  color: var(--accent-color);
}

.footer-bottom {
  border-top: 1px solid #444;
  padding-top: 20px;
}

.copyright {
  text-align: center;
  font-size: 0.85rem;
  color: #888;
  margin-bottom: 10px;
}

.footer-statement {
  text-align: center;
  font-size: 0.8rem;
  color: #777;
}

/* 响应式样式 */
@media (max-width: 992px) {
  .banner-content {
    flex-direction: column;
  }
  
  .banner-text {
    padding-right: 0;
    margin-bottom: 30px;
    text-align: center;
  }
  
  .banner-buttons {
    justify-content: center;
  }
  
  .about-content {
    flex-direction: column;
  }
}

@media (max-width: 768px) {
  .header .container {
    flex-direction: column;
  }
  
  .logo {
    margin-bottom: 15px;
  }
  
  .main-nav ul {
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .main-nav li {
    margin: 5px 10px;
  }
  
  .section-header h2 {
    font-size: 2rem;
  }
  
  .banner-text h2 {
    font-size: 2.2rem;
  }
}

@media (max-width: 576px) {
  section {
    padding: 40px 0;
  }
  
  .manga-grid, .update-list, .category-grid, .recommend-slider, .articles-grid {
    grid-template-columns: 1fr;
  }
}