/* 全局样式 */
:root {
  --primary-color: #000;
  --secondary-color: #fff;
  --accent-color: #d4af37;
  --text-light: #666;
  --bg-light: #fafafa;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --border-radius: 4px;
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.6;
  color: var(--primary-color);
  background-color: var(--secondary-color);
  overflow-x: hidden;
}

/* 导航样式 */
nav {
  padding: var(--spacing-md) 0;
  text-align: center;
}

nav a {
  color: var(--primary-color);
  text-decoration: none;
  margin: 0 var(--spacing-sm);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  transition: var(--transition);
}

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

/* Hero 区域 */
.hero {
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  background: linear-gradient(rgba(0,0,0,0.3), rgba(0,0,0,0.3)),
              url('https://hpi-hub.tos-cn-beijing.volces.com/static/batch_24/1757665276589-8759.jpg') no-repeat center center;
  background-size: cover;
  color: var(--secondary-color);
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 300;
  letter-spacing: 0.2em;
  margin-bottom: var(--spacing-sm);
}

.hero p {
  font-size: clamp(1rem, 3vw, 1.5rem);
  margin-bottom: var(--spacing-lg);
  opacity: 0.9;
}

/* 图标区块 */
.icon-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  max-width: 1200px;
  margin: 0 auto;
}

.icon-card {
  text-align: center;
  padding: var(--spacing-lg);
  transition: var(--transition);
  cursor: pointer;
}

.icon-card:hover {
  transform: translateY(-5px);
}

.icon-card img {
  width: 60px;
  height: 60px;
  margin-bottom: var(--spacing-sm);
  filter: brightness(0);
}

.icon-card h3 {
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.1em;
}

/* 图片墙样式 */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
}

.gallery-item {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3/4;
  cursor: pointer;
}

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

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

.gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-sm);
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  color: var(--secondary-color);
  font-size: 0.9rem;
}

/* 工艺展示 */
.craft-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
}

.craft-item {
  text-align: center;
}

.craft-item img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  margin-bottom: var(--spacing-sm);
}

/* 时间轴 */
.timeline {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-lg);
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--text-light);
}

.timeline-item {
  display: flex;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
  position: relative;
}

.timeline-item:nth-child(odd) {
  flex-direction: row-reverse;
}

.timeline-content {
  width: 45%;
  padding: var(--spacing-md);
  background: var(--bg-light);
  border-radius: var(--border-radius);
}

.timeline-dot {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 10px;
  height: 10px;
  background: var(--accent-color);
  border-radius: 50%;
  top: 50%;
}

/* 页脚 */
footer {
  text-align: center;
  padding: var(--spacing-md);
  background: var(--bg-light);
  margin-top: var(--spacing-lg);
}

/* 响应式设计 */
@media (max-width: 768px) {
  .gallery {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  }
  
  .timeline::before {
    left: 20px;
  }
  
  .timeline-item {
    flex-direction: row !important;
  }
  
  .timeline-content {
    width: calc(100% - 60px);
    margin-left: 60px;
  }
  
  .timeline-dot {
    left: 20px;
  }
}

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

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

/* 加载动画 */
.lazy-load {
  opacity: 0;
  transition: opacity 0.3s;
}

.lazy-load.loaded {
  opacity: 1;
}