/* ===== 竹木雕刻 - 全局样式 ===== */
:root {
  --primary-color: #8B4513;
  --secondary-color: #D2691E;
  --accent-color: #CD853F;
  --bg-color: #FDF5E6;
  --card-bg: #FFFFFF;
  --text-primary: #3E2723;
  --text-secondary: #6D4C41;
  --border-color: #D7CCC8;
  --shadow: 0 2px 8px rgba(139, 69, 19, 0.1);
  --shadow-hover: 0 4px 16px rgba(139, 69, 19, 0.15);
  --radius: 8px;
  --max-width: 1200px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
}

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

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

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

/* ===== Header ===== */
.header {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: white;
  padding: 16px 0;
  box-shadow: var(--shadow);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.logo {
  font-size: 24px;
  font-weight: 700;
  color: white;
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo::before {
  content: "🎋";
  font-size: 28px;
}

.nav {
  display: flex;
  gap: 24px;
}

.nav a {
  color: rgba(255, 255, 255, 0.9);
  font-size: 15px;
}

.nav a:hover {
  color: white;
}

/* ===== Search Box ===== */
.search-box {
  background: var(--card-bg);
  border: 2px solid var(--border-color);
  border-radius: var(--radius);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 500px;
  margin: 0 auto;
}

.search-box input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 16px;
  background: transparent;
}

.search-box button {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 8px 20px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  transition: background 0.3s;
}

.search-box button:hover {
  background: var(--secondary-color);
}

/* ===== Hero Section ===== */
.hero {
  text-align: center;
  padding: 60px 20px;
  background: linear-gradient(180deg, var(--bg-color) 0%, #FFF8E7 100%);
}

.hero h1 {
  font-size: 36px;
  margin-bottom: 16px;
  color: var(--primary-color);
}

.hero p {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 32px;
}

/* ===== Category Filter ===== */
.category-filter {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin: 32px 0;
}

.category-filter a {
  padding: 8px 20px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  font-size: 14px;
  color: var(--text-secondary);
  transition: all 0.3s;
}

.category-filter a:hover,
.category-filter a.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

/* ===== Section Title ===== */
.section-title {
  font-size: 24px;
  color: var(--primary-color);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ===== Product Card ===== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 48px;
}

.product-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.3s, box-shadow 0.3s;
}

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

.product-card .image {
  height: 180px;
  background: linear-gradient(135deg, var(--accent-color) 0%, var(--secondary-color) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 64px;
}

.product-card .content {
  padding: 20px;
}

.product-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.product-card p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 12px;
  line-height: 1.5;
}

.product-card .meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-secondary);
}

.product-card .price {
  color: var(--secondary-color);
  font-weight: 600;
  font-size: 16px;
}

/* ===== Article Card ===== */
.article-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.article-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  display: flex;
  gap: 20px;
  align-items: flex-start;
  transition: box-shadow 0.3s;
}

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

.article-card .icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--accent-color) 0%, var(--secondary-color) 100%);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  flex-shrink: 0;
}

.article-card .content {
  flex: 1;
}

.article-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.article-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.article-card .meta {
  margin-top: 12px;
  font-size: 13px;
  color: var(--text-secondary);
  display: flex;
  gap: 16px;
}

/* ===== Stats ===== */
.stats {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  margin-bottom: 48px;
  box-shadow: var(--shadow);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 24px;
}

.stat-item {
  padding: 16px;
}

.stat-item .number {
  font-size: 32px;
  font-weight: 700;
  color: var(--primary-color);
}

.stat-item .label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* ===== Three Column Section ===== */
.three-column {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.column {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.column h3 {
  font-size: 18px;
  color: var(--primary-color);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.column ul {
  list-style: none;
}

.column li {
  padding: 10px 0;
  border-bottom: 1px dashed var(--border-color);
}

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

.column a {
  color: var(--text-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.column .tag {
  font-size: 12px;
  padding: 2px 8px;
  background: var(--bg-color);
  border-radius: 10px;
  color: var(--text-secondary);
}

/* ===== Breadcrumb ===== */
.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: 14px;
}

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

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

.breadcrumb .current {
  color: var(--primary-color);
  font-weight: 500;
}

/* ===== Category Header ===== */
.category-header {
  background: linear-gradient(180deg, var(--bg-color) 0%, #FFF8E7 100%);
  padding: 40px 20px;
  text-align: center;
}

.category-header h1 {
  font-size: 32px;
  color: var(--primary-color);
  margin-bottom: 8px;
}

.category-header p {
  color: var(--text-secondary);
}

/* ===== Sub Categories ===== */
.sub-categories {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin: 24px 0;
}

.sub-categories a {
  padding: 10px 20px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  font-size: 14px;
  transition: all 0.3s;
}

.sub-categories a:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

/* ===== Pagination ===== */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin: 40px 0;
}

.pagination a,
.pagination span {
  padding: 8px 14px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 14px;
  min-width: 40px;
  text-align: center;
}

.pagination a:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

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

/* ===== Article Detail ===== */
.article-detail {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 40px;
  margin: 40px 0;
  box-shadow: var(--shadow);
}

.article-detail h1 {
  font-size: 28px;
  color: var(--primary-color);
  margin-bottom: 16px;
}

.article-meta {
  display: flex;
  gap: 20px;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
}

.article-content {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-primary);
}

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

.article-content h2 {
  font-size: 22px;
  color: var(--primary-color);
  margin: 32px 0 16px;
}

.article-content h3 {
  font-size: 18px;
  color: var(--secondary-color);
  margin: 24px 0 12px;
}

.article-content ul,
.article-content ol {
  margin: 16px 0;
  padding-left: 24px;
}

.article-content li {
  margin: 8px 0;
}

/* ===== Tags ===== */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0;
}

.tags a {
  padding: 6px 14px;
  background: var(--bg-color);
  border-radius: 16px;
  font-size: 13px;
  color: var(--text-secondary);
}

.tags a:hover {
  background: var(--primary-color);
  color: white;
}

/* ===== Related Products ===== */
.related-section {
  margin: 40px 0;
}

.related-section h3 {
  font-size: 20px;
  color: var(--primary-color);
  margin-bottom: 20px;
}

/* ===== 404 Page ===== */
.error-page {
  text-align: center;
  padding: 80px 20px;
}

.error-code {
  font-size: 120px;
  font-weight: 700;
  color: var(--primary-color);
  line-height: 1;
  margin-bottom: 16px;
}

.error-page h1 {
  font-size: 28px;
  color: var(--text-primary);
  margin-bottom: 16px;
}

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

.btn {
  display: inline-block;
  padding: 12px 32px;
  background: var(--primary-color);
  color: white;
  border-radius: var(--radius);
  font-size: 16px;
  transition: background 0.3s;
}

.btn:hover {
  background: var(--secondary-color);
  color: white;
}

/* ===== Footer ===== */
.footer {
  background: var(--primary-color);
  color: rgba(255, 255, 255, 0.8);
  padding: 40px 0 20px;
  margin-top: 60px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  margin-bottom: 32px;
}

.footer h4 {
  color: white;
  font-size: 16px;
  margin-bottom: 16px;
}

.footer ul {
  list-style: none;
}

.footer li {
  margin: 8px 0;
}

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

.footer a:hover {
  color: white;
}

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 14px;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .header .container {
    flex-direction: column;
    text-align: center;
  }

  .nav {
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero h1 {
    font-size: 28px;
  }

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

  .three-column {
    grid-template-columns: 1fr;
  }

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

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

  .article-card .icon {
    width: 100%;
    height: 100px;
  }

  .article-detail {
    padding: 24px;
  }

  .article-detail h1 {
    font-size: 22px;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .search-box {
    flex-direction: column;
  }

  .search-box button {
    width: 100%;
  }

  .category-filter a {
    padding: 6px 14px;
    font-size: 13px;
  }
}