/* 主要样式文件 */
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;500;600;700&family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

:root {
  --primary-color: #2c3e50;
  --secondary-color: #3498db;
  --accent-color: #e74c3c;
  --text-color: #333333;
  --light-text: #f8f9fa;
  --background-color: #ffffff;
  --light-background: #f5f7fa;
  --dark-background: #1a202c;
  --border-color: #e2e8f0;
  --shadow-color: rgba(0, 0, 0, 0.1);
  --success-color: #2ecc71;
  --warning-color: #f39c12;
  --info-color: #3498db;
}

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

body {
  font-family: 'Noto Sans SC', sans-serif;
  color: var(--text-color);
  background-color: var(--background-color);
  line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Noto Serif SC', serif;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

h1 {
  font-size: 2.5rem;
  line-height: 1.2;
}

h2 {
  font-size: 2rem;
  line-height: 1.3;
}

h3 {
  font-size: 1.75rem;
  line-height: 1.4;
}

h4 {
  font-size: 1.5rem;
  line-height: 1.4;
}

h5 {
  font-size: 1.25rem;
  line-height: 1.4;
}

h6 {
  font-size: 1rem;
  line-height: 1.4;
}

p {
  margin-bottom: 1.5rem;
}

a {
  color: var(--secondary-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* 导航栏样式 */
.navbar {
  background-color: var(--primary-color);
  color: var(--light-text);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px var(--shadow-color);
}

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

.navbar-logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--light-text);
}

.navbar-menu {
  display: flex;
  list-style: none;
}

.navbar-item {
  margin-left: 1.5rem;
}

.navbar-link {
  color: var(--light-text);
  font-weight: 500;
  padding: 0.5rem;
  border-radius: 4px;
  transition: background-color 0.3s ease;
}

.navbar-link:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--light-text);
}

/* 英雄区域样式 */
.hero {
  background-color: var(--light-background);
  padding: 4rem 0;
  margin-bottom: 3rem;
  position: relative;
  overflow: hidden;
}

.hero-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.hero-subtitle {
  font-size: 1.5rem;
  margin-bottom: 2rem;
  max-width: 800px;
  color: var(--text-color);
}

.hero-button {
  display: inline-block;
  background-color: var(--secondary-color);
  color: var(--light-text);
  padding: 0.75rem 1.5rem;
  border-radius: 4px;
  font-weight: 500;
  transition: background-color 0.3s ease;
}

.hero-button:hover {
  background-color: var(--accent-color);
  color: var(--light-text);
}

/* 卡片组件样式 */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.card {
  background-color: var(--background-color);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 6px var(--shadow-color);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px var(--shadow-color);
}

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

.card-content {
  padding: 1.5rem;
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.card-description {
  color: var(--text-color);
  margin-bottom: 1rem;
}

.card-link {
  display: inline-block;
  color: var(--secondary-color);
  font-weight: 500;
}

/* 部分样式 */
.section {
  padding: 3rem 0;
  margin-bottom: 2rem;
}

.section-title {
  text-align: center;
  margin-bottom: 2rem;
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 50px;
  height: 3px;
  background-color: var(--accent-color);
  margin: 1rem auto 0;
}

/* 页脚样式 */
.footer {
  background-color: var(--dark-background);
  color: var(--light-text);
  padding: 3rem 0;
  margin-top: 3rem;
}

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

.footer-section {
  margin-bottom: 1.5rem;
}

.footer-title {
  color: var(--light-text);
  margin-bottom: 1rem;
  font-size: 1.25rem;
}

.footer-links {
  list-style: none;
}

.footer-link {
  margin-bottom: 0.5rem;
}

.footer-link a {
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.3s ease;
}

.footer-link a:hover {
  color: var(--light-text);
}

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

.footer-text {
  color: rgba(255, 255, 255, 0.7);
}

/* 响应式设计 */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1.25rem;
  }
  
  .navbar-menu {
    display: none;
  }
}

@media (max-width: 576px) {
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .section {
    padding: 2rem 0;
  }
}

/* 模型详情页样式 */
.model-header {
  background-color: var(--light-background);
  padding: 3rem 0;
  margin-bottom: 2rem;
}

.model-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.model-description {
  font-size: 1.25rem;
  max-width: 800px;
  margin: 0 auto 2rem;
}

.model-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 1rem;
}

.model-section {
  margin-bottom: 2rem;
}

.model-section-title {
  font-size: 1.75rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.model-example {
  background-color: var(--light-background);
  padding: 1.5rem;
  border-radius: 8px;
  margin-bottom: 1.5rem;
}

.model-example-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
}

.model-application {
  background-color: var(--light-background);
  padding: 1.5rem;
  border-radius: 8px;
}

.model-application-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
}

/* 导航目录样式 */
.toc {
  background-color: var(--light-background);
  padding: 1.5rem;
  border-radius: 8px;
  margin-bottom: 2rem;
}

.toc-title {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.toc-list {
  list-style: none;
}

.toc-item {
  margin-bottom: 0.5rem;
}

.toc-link {
  display: block;
  padding: 0.5rem;
  border-radius: 4px;
  transition: background-color 0.3s ease;
}

.toc-link:hover {
  background-color: rgba(0, 0, 0, 0.05);
}

/* 引用样式 */
blockquote {
  border-left: 4px solid var(--secondary-color);
  padding-left: 1rem;
  margin-bottom: 1.5rem;
  color: #555;
  font-style: italic;
}

/* 代码和图表样式 */
pre {
  background-color: var(--dark-background);
  color: var(--light-text);
  padding: 1.5rem;
  border-radius: 8px;
  overflow-x: auto;
  margin-bottom: 1.5rem;
}

code {
  font-family: 'Courier New', Courier, monospace;
}

.chart-container {
  width: 100%;
  height: 400px;
  margin-bottom: 1.5rem;
}

/* 按钮样式 */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 4px;
  font-weight: 500;
  text-align: center;
  cursor: pointer;
  transition: background-color 0.3s ease, color 0.3s ease;
}

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

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

.btn-outline {
  background-color: transparent;
  color: var(--secondary-color);
  border: 1px solid var(--secondary-color);
}

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

/* 工具提示样式 */
.tooltip {
  position: relative;
  display: inline-block;
}

.tooltip .tooltip-text {
  visibility: hidden;
  width: 200px;
  background-color: var(--dark-background);
  color: var(--light-text);
  text-align: center;
  border-radius: 6px;
  padding: 0.5rem;
  position: absolute;
  z-index: 1;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  opacity: 0;
  transition: opacity 0.3s;
}

.tooltip:hover .tooltip-text {
  visibility: visible;
  opacity: 1;
}

/* 标签样式 */
.tag {
  display: inline-block;
  background-color: var(--light-background);
  color: var(--text-color);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.875rem;
  margin-right: 0.5rem;
  margin-bottom: 0.5rem;
}

/* 图标样式 */
.icon {
  display: inline-block;
  width: 1em;
  height: 1em;
  vertical-align: -0.125em;
  fill: currentColor;
}

/* 动画效果 */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.fade-in {
  animation: fadeIn 0.5s ease-in-out;
}

/* 杂志风格特殊样式 */
.magazine-layout {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  gap: 2rem;
  margin-bottom: 3rem;
}

@media (max-width: 992px) {
  .magazine-layout {
    grid-template-columns: 1fr;
  }
}

.magazine-feature {
  grid-column: span 3;
  position: relative;
  height: 500px;
  overflow: hidden;
  border-radius: 8px;
  margin-bottom: 2rem;
}

.magazine-feature-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.magazine-feature-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2rem;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
  color: var(--light-text);
}

.magazine-feature-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: var(--light-text);
}

.magazine-feature-description {
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
}

.magazine-column {
  display: flex;
  flex-direction: column;
}

.magazine-article {
  margin-bottom: 2rem;
}

.magazine-article-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 1rem;
}

.magazine-article-title {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.magazine-article-excerpt {
  margin-bottom: 1rem;
}

.magazine-article-meta {
  font-size: 0.875rem;
  color: #777;
}

/* 引用人物样式 */
.quote-card {
  background-color: var(--light-background);
  padding: 2rem;
  border-radius: 8px;
  margin-bottom: 2rem;
  position: relative;
}

.quote-card::before {
  content: '"';
  font-size: 5rem;
  position: absolute;
  top: 10px;
  left: 20px;
  color: rgba(0, 0, 0, 0.1);
  font-family: Georgia, serif;
}

.quote-text {
  font-size: 1.25rem;
  font-style: italic;
  margin-bottom: 1rem;
  position: relative;
  z-index: 1;
}

.quote-author {
  font-weight: 700;
  text-align: right;
}

.quote-role {
  font-size: 0.875rem;
  color: #777;
  text-align: right;
}