/* 老照片修复 - 全局样式 */
:root {
  --primary-color: #8b6914;
  --secondary-color: #d4a574;
  --accent-color: #c9a227;
  --bg-color: #f5f0e8;
  --card-bg: #faf8f5;
  --text-color: #3d3d3d;
  --text-light: #666;
  --border-color: #e0d5c5;
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-hover: 0 4px 16px rgba(0,0,0,0.12);
  --radius: 8px;
  --max-width: 1200px;
  --header-height: 64px;
}

* {
  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: var(--text-color);
  background-color: var(--bg-color);
}

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

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

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

/* 容器 */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* 页头 */
.header {
  background: linear-gradient(135deg, #2c2416 0%, #4a3f2e 100%);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

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

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

.logo span {
  color: #fff;
  font-size: 0.9rem;
  font-weight: 400;
  margin-left: 8px;
}

.nav {
  display: flex;
  gap: 32px;
}

.nav a {
  color: rgba(255,255,255,0.9);
  font-size: 0.95rem;
  font-weight: 500;
}

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

/* Hero区域 */
.hero {
  background: linear-gradient(135deg, #3d3220 0%, #5c4d35 50%, #3d3220 100%);
  color: #fff;
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: 2.8rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--accent-color);
}

.hero .subtitle {
  font-size: 1.2rem;
  color: rgba(255,255,255,0.85);
  max-width: 600px;
  margin: 0 auto 32px;
}

.hero .keywords {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 24px;
}

.hero .keyword {
  background: rgba(201, 162, 39, 0.2);
  border: 1px solid rgba(201, 162, 39, 0.4);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.9rem;
  color: var(--accent-color);
}

/* 按钮 */
.btn {
  display: inline-block;
  padding: 12px 32px;
  background: var(--accent-color);
  color: #2c2416;
  font-weight: 600;
  border-radius: var(--radius);
  transition: all 0.3s;
  border: none;
  cursor: pointer;
}

.btn:hover {
  background: #d4b43a;
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--accent-color);
  color: var(--accent-color);
}

.btn-outline:hover {
  background: var(--accent-color);
  color: #2c2416;
}

/* 区块标题 */
.section-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 8px;
  text-align: center;
}

.section-subtitle {
  text-align: center;
  color: var(--text-light);
  margin-bottom: 40px;
}

/* 卡片 */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  transition: all 0.3s;
  border: 1px solid var(--border-color);
}

.card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.card-title {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 12px;
}

.card-desc {
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* 文章列表 */
.article-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.article-item {
  display: flex;
  gap: 20px;
  background: var(--card-bg);
  padding: 20px;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  transition: all 0.3s;
}

.article-item:hover {
  box-shadow: var(--shadow-hover);
}

.article-thumb {
  width: 160px;
  height: 120px;
  object-fit: cover;
  border-radius: var(--radius);
  flex-shrink: 0;
  background: var(--border-color);
}

.article-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.article-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-color);
  margin-bottom: 8px;
}

.article-title:hover {
  color: var(--primary-color);
}

.article-meta {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 8px;
}

.article-summary {
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 网格布局 */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

/* 三栏底部 */
.three-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}

.column h3 {
  font-size: 1.1rem;
  color: var(--primary-color);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--accent-color);
}

.column ul {
  list-style: none;
}

.column li {
  padding: 8px 0;
  border-bottom: 1px dashed var(--border-color);
}

.column li:last-child {
  border-bottom: none;
}

.column a {
  color: var(--text-light);
  font-size: 0.95rem;
}

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

/* 面包屑 */
.breadcrumb {
  background: var(--card-bg);
  padding: 16px 0;
  border-bottom: 1px solid var(--border-color);
}

.breadcrumb .container {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-light);
}

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

.breadcrumb .separator {
  color: var(--border-color);
}

/* 分页 */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
}

.pagination a,
.pagination span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-color);
  font-size: 0.95rem;
  transition: all 0.3s;
}

.pagination a:hover {
  background: var(--accent-color);
  border-color: var(--accent-color);
  color: #2c2416;
}

.pagination .current {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: #fff;
}

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

.article-header h1 {
  font-size: 2rem;
  color: var(--primary-color);
  margin-bottom: 16px;
}

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

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

.article-featured-image {
  width: 100%;
  max-height: 400px;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: 32px;
}

.article-body {
  background: var(--card-bg);
  padding: 40px;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  font-size: 1.05rem;
  line-height: 1.9;
}

.article-body h2 {
  font-size: 1.5rem;
  color: var(--primary-color);
  margin: 32px 0 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--border-color);
}

.article-body h3 {
  font-size: 1.25rem;
  color: var(--text-color);
  margin: 24px 0 12px;
}

.article-body p {
  margin-bottom: 16px;
}

.article-body ul,
.article-body ol {
  margin-bottom: 16px;
  padding-left: 24px;
}

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

/* 相关文章 */
.related-articles {
  margin-top: 48px;
}

.related-articles h3 {
  font-size: 1.3rem;
  color: var(--primary-color);
  margin-bottom: 24px;
  text-align: center;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.related-item {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: all 0.3s;
}

.related-item:hover {
  box-shadow: var(--shadow-hover);
}

.related-item img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  background: var(--border-color);
}

.related-item h4 {
  padding: 16px;
  font-size: 1rem;
  color: var(--text-color);
}

/* 404页面 */
.error-page {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 80px 20px;
}

.error-code {
  font-size: 8rem;
  font-weight: 700;
  color: var(--accent-color);
  line-height: 1;
  margin-bottom: 16px;
}

.error-title {
  font-size: 1.8rem;
  color: var(--primary-color);
  margin-bottom: 16px;
}

.error-desc {
  color: var(--text-light);
  margin-bottom: 32px;
  max-width: 400px;
}

/* 页脚 */
.footer {
  background: #2c2416;
  color: rgba(255,255,255,0.8);
  padding: 48px 0 24px;
  margin-top: 64px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}

.footer-brand h3 {
  color: var(--accent-color);
  font-size: 1.3rem;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.7);
}

.footer-links h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 16px;
}

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

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

.footer-links a {
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
}

/* 服务特色 */
.features {
  padding: 64px 0;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-item {
  text-align: center;
  padding: 32px 24px;
}

.feature-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--accent-color), var(--secondary-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.5rem;
}

/* 响应式设计 */
@media (max-width: 992px) {
  .grid-3,
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .three-columns {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .header .container {
    flex-wrap: wrap;
    height: auto;
    padding: 12px 20px;
  }

  .nav {
    width: 100%;
    justify-content: center;
    margin-top: 12px;
    gap: 20px;
  }

  .hero {
    padding: 48px 0;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .hero .subtitle {
    font-size: 1rem;
  }

  .grid-3,
  .grid-2,
  .feature-grid,
  .three-columns {
    grid-template-columns: 1fr;
  }

  .article-item {
    flex-direction: column;
  }

  .article-thumb {
    width: 100%;
    height: 180px;
  }

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

  .related-grid {
    grid-template-columns: 1fr;
  }

  .article-body {
    padding: 24px;
  }

  .error-code {
    font-size: 5rem;
  }
}

@media (max-width: 480px) {
  .hero .keywords {
    gap: 8px;
  }

  .hero .keyword {
    font-size: 0.8rem;
    padding: 6px 12px;
  }

  .pagination a,
  .pagination span {
    min-width: 36px;
    height: 36px;
    padding: 0 8px;
    font-size: 0.9rem;
  }
}