/* 全局样式重置 */
* {
  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;
  line-height: 1.6;
  color: #333;
  background: #fff;
}

/* 设计令牌 */
:root {
  --color-primary: #111;
  --color-secondary: #666;
  --color-light: #f5f5f5;
  --color-border: #e5e5e5;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --border-radius: 0.25rem;
  --transition: all 0.3s ease;
}

/* 导航样式 */
.nav {
  background: var(--color-primary);
  padding: var(--spacing-sm);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand {
  color: white;
  font-size: 1.5rem;
  font-weight: 600;
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: var(--spacing-md);
}

.nav-link {
  color: white;
  text-decoration: none;
  opacity: 0.9;
  transition: var(--transition);
}

.nav-link:hover {
  opacity: 1;
}

/* 轮播图样式 */
.hero {
  position: relative;
  height: 100vh;
  overflow: hidden;
  margin-top: 60px;
}

.hero-slide {
  position: absolute;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1s ease-in-out;
}

.hero-slide.active {
  opacity: 1;
}

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

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-content {
  text-align: center;
  color: white;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 300;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-sm);
}

/* 快速入口样式 */
.quick-links {
  padding: var(--spacing-lg) var(--spacing-sm);
  max-width: 1200px;
  margin: 0 auto;
}

.quick-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

.quick-card {
  background: var(--color-light);
  padding: var(--spacing-lg);
  text-align: center;
  transition: var(--transition);
  cursor: pointer;
}

.quick-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.quick-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

/* 瀑布流布局 */
.masonry {
  column-count: 3;
  column-gap: var(--spacing-sm);
  padding: var(--spacing-sm);
}

.masonry-item {
  break-inside: avoid;
  margin-bottom: var(--spacing-sm);
  position: relative;
  overflow: hidden;
}

.masonry-item img {
  width: 100%;
  display: block;
  transition: var(--transition);
}

.masonry-item:hover img {
  transform: scale(1.05);
}

.masonry-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.7);
  color: white;
  padding: var(--spacing-sm);
  transform: translateY(100%);
  transition: var(--transition);
}

.masonry-item:hover .masonry-caption {
  transform: translateY(0);
}

/* 网格布局 */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
}

.grid-item {
  background: white;
  overflow: hidden;
  cursor: pointer;
}

.grid-item img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  transition: var(--transition);
}

.grid-item:hover img {
  transform: scale(1.05);
}

/* 详情浮层 */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.9);
  z-index: 2000;
  overflow-y: auto;
}

.modal.active {
  display: block;
}

.modal-content {
  max-width: 800px;
  margin: 5% auto;
  background: white;
  padding: var(--spacing-md);
  position: relative;
}

.modal-close {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  width: 40px;
  height: 40px;
  background: var(--color-primary);
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-images {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.modal-images img {
  width: 100%;
  height: auto;
  display: block;
}

/* 详情页面样式 */
.detail-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-sm);
}

.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: center;
}

.detail-image {
  width: 100%;
  height: auto;
  display: block;
}

.detail-content h2 {
  font-size: 2rem;
  font-weight: 300;
  margin-bottom: var(--spacing-md);
}

.detail-content p {
  color: var(--color-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-sm);
}

/* 筛选标签 */
.filter-tags {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  flex-wrap: wrap;
}

.filter-tag {
  padding: var(--spacing-xs) var(--spacing-md);
  border: 1px solid var(--color-border);
  background: white;
  cursor: pointer;
  transition: var(--transition);
}

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

/* 画廊样式 */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
}

.gallery-item {
  position: relative;
  overflow: hidden;
  height: 400px;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.gallery-item:hover img {
  transform: scale(1.05);
}

/* 页脚样式 */
footer {
  background: var(--color-primary);
  color: white;
  text-align: center;
  padding: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

/* 响应式设计 */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .masonry {
    column-count: 2;
  }
  
  .detail-grid {
    grid-template-columns: 1fr;
  }
  
  .gallery {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .masonry {
    column-count: 1;
  }
  
  .quick-grid {
    grid-template-columns: 1fr;
  }
}

/* 动画效果 */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.8s ease-out;
}

/* 加载状态 */
.loading {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 200px;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-light);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}