/* 沙漠穿越 - 极简阅读风格 CSS */

/* CSS 变量 */
:root {
  --accent-color: #c17f59;
  --text-primary: #2c2c2c;
  --text-secondary: #666;
  --text-muted: #999;
  --bg-primary: #faf8f5;
  --bg-secondary: #f5f2ed;
  --border-color: #e8e4de;
  --max-width: 720px;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "SimSun", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* 重置样式 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-serif);
  font-size: 18px;
  line-height: 1.8;
  color: var(--text-primary);
  background-color: var(--bg-primary);
}

a {
  color: var(--accent-color);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #a06a48;
}

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

/* 容器 */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* 头部 */
.header {
  padding: 48px 0 32px;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 48px;
}

.logo {
  font-size: 28px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 4px;
}

.logo a {
  color: inherit;
}

.tagline {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 8px;
  font-family: var(--font-sans);
}

/* Hero 区域 */
.hero {
  text-align: center;
  padding: 64px 0;
}

.hero-title {
  font-size: 42px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 24px;
  color: var(--text-primary);
}

.hero-desc {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 40px;
}

/* 内容卡片 */
.content-card {
  background: var(--bg-secondary);
  border-radius: 8px;
  padding: 32px;
  margin-bottom: 24px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.content-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.content-card-title {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.content-card-title a {
  color: inherit;
}

.content-card-meta {
  font-size: 13px;
  color: var(--text-muted);
  font-family: var(--font-sans);
  margin-bottom: 12px;
}

.content-card-desc {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 文章列表 */
.article-list {
  padding: 24px 0;
}

.article-item {
  padding: 24px 0;
  border-bottom: 1px solid var(--border-color);
}

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

.article-item-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}

.article-item-title a {
  color: var(--text-primary);
}

.article-item-title a:hover {
  color: var(--accent-color);
}

.article-item-meta {
  font-size: 13px;
  color: var(--text-muted);
  font-family: var(--font-sans);
}

/* 三栏布局 */
.three-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  padding: 48px 0;
  border-top: 1px solid var(--border-color);
}

.column-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 20px;
  font-family: var(--font-sans);
}

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

.column-list li {
  margin-bottom: 12px;
}

.column-list a {
  font-size: 15px;
  color: var(--text-secondary);
  display: block;
  padding: 4px 0;
}

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

/* 分类页 */
.category-header {
  text-align: center;
  padding: 48px 0 32px;
}

.category-title {
  font-size: 36px;
  font-weight: 600;
  margin-bottom: 12px;
}

.category-desc {
  font-size: 16px;
  color: var(--text-secondary);
}

/* 文章页 */
.article-header {
  text-align: center;
  padding: 48px 0 32px;
}

.article-title {
  font-size: 36px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 20px;
}

.article-meta {
  font-size: 14px;
  color: var(--text-muted);
  font-family: var(--font-sans);
}

.article-meta span {
  margin: 0 12px;
}

.article-featured-image {
  margin: 32px 0;
  border-radius: 8px;
  overflow: hidden;
}

.article-featured-image img {
  width: 100%;
}

.article-content {
  font-size: 18px;
  line-height: 1.9;
  color: var(--text-primary);
}

.article-content p {
  margin-bottom: 24px;
}

.article-content h2 {
  font-size: 26px;
  font-weight: 600;
  margin: 48px 0 24px;
  color: var(--text-primary);
}

.article-content h3 {
  font-size: 22px;
  font-weight: 600;
  margin: 36px 0 18px;
  color: var(--text-primary);
}

.article-content ul,
.article-content ol {
  margin-bottom: 24px;
  padding-left: 28px;
}

.article-content li {
  margin-bottom: 8px;
}

.article-content blockquote {
  border-left: 3px solid var(--accent-color);
  padding-left: 24px;
  margin: 32px 0;
  color: var(--text-secondary);
  font-style: italic;
}

/* 推荐区域 */
.recommended-section {
  padding: 48px 0;
  border-top: 1px solid var(--border-color);
  margin-top: 48px;
}

.recommended-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 24px;
  text-align: center;
  font-family: var(--font-sans);
}

.recommended-tags {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 48px;
}

.recommended-tags a {
  font-size: 15px;
  color: var(--text-secondary);
  padding: 8px 16px;
  background: var(--bg-secondary);
  border-radius: 20px;
  transition: all 0.2s ease;
}

.recommended-tags a:hover {
  background: var(--accent-color);
  color: #fff;
}

/* 两栏布局 */
.two-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

/* 404 页面 */
.error-page {
  text-align: center;
  padding: 120px 0;
}

.error-code {
  font-size: 120px;
  font-weight: 700;
  color: var(--border-color);
  line-height: 1;
  margin-bottom: 24px;
}

.error-title {
  font-size: 28px;
  font-weight: 600;
  margin-bottom: 16px;
}

.error-desc {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.btn {
  display: inline-block;
  padding: 12px 32px;
  background: var(--accent-color);
  color: #fff;
  font-size: 15px;
  font-family: var(--font-sans);
  border-radius: 4px;
  transition: background 0.2s ease;
}

.btn:hover {
  background: #a06a48;
  color: #fff;
}

/* 页脚 */
.footer {
  text-align: center;
  padding: 48px 0;
  border-top: 1px solid var(--border-color);
  margin-top: 48px;
}

.footer p {
  font-size: 13px;
  color: var(--text-muted);
  font-family: var(--font-sans);
}

/* 响应式设计 */
@media (max-width: 768px) {
  html {
    font-size: 15px;
  }

  .container {
    padding: 0 20px;
  }

  .hero {
    padding: 48px 0;
  }

  .hero-title {
    font-size: 32px;
  }

  .hero-desc {
    font-size: 16px;
  }

  .content-card {
    padding: 24px;
  }

  .content-card-title {
    font-size: 20px;
  }

  .three-columns {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .two-columns {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .article-title {
    font-size: 28px;
  }

  .article-content {
    font-size: 17px;
  }

  .article-content h2 {
    font-size: 22px;
  }

  .article-content h3 {
    font-size: 19px;
  }

  .category-title {
    font-size: 28px;
  }

  .error-code {
    font-size: 80px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 26px;
  }

  .article-title {
    font-size: 24px;
  }

  .header {
    padding: 32px 0 24px;
  }

  .logo {
    font-size: 24px;
  }
}