/* 全局样式重置与基础设置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  color: #2c2c2c;
  background: #fafafa;
  line-height: 1.8;
  overflow-x: hidden;
}

/* 导航栏样式 */
.nav-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(250, 250, 250, 0.95);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.nav-link {
  position: relative;
  font-weight: 300;
  letter-spacing: 2px;
  transition: color 0.3s ease;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  width: 0;
  height: 1px;
  background: #2c2c2c;
  transition: all 0.3s ease;
  transform: translateX(-50%);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* 页面容器 */
.page-section {
  min-height: 100vh;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.page-section.active {
  opacity: 1;
  transform: translateY(0);
}

/* 轮播图样式 */
.carousel-container {
  position: relative;
  height: 100vh;
  overflow: hidden;
}

.carousel-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1.2s ease;
}

.carousel-slide.active {
  opacity: 1;
  z-index: 1;
}

.carousel-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.85);
}

/* 文字渐显效果 */
.fade-in-text {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 1s ease, transform 1s ease;
}

.fade-in-text.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 图片网格布局 */
.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  padding: 4rem 2rem;
}

.image-item {
  position: relative;
  overflow: hidden;
  aspect-ratio: 2/3;
  cursor: pointer;
  border-radius: 2px;
}

.image-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease, filter 0.6s ease;
}

.image-item:hover img {
  transform: scale(1.05);
  filter: brightness(1.1);
}

.image-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.5rem;
  background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
  color: white;
  font-size: 0.9rem;
  font-weight: 300;
  letter-spacing: 1px;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.image-item:hover .image-caption {
  opacity: 1;
}

/* 杂志式布局 */
.magazine-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  padding: 4rem 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.magazine-image-large {
  width: 100%;
  height: 600px;
  object-fit: cover;
  border-radius: 2px;
}

.magazine-text-section {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 2rem;
}

.magazine-chapter {
  opacity: 0;
  transform: translateX(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.magazine-chapter.visible {
  opacity: 1;
  transform: translateX(0);
}

.small-image-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}

.small-image-grid img {
  width: 100%;
  aspect-ratio: 1/1;
  object-fit: cover;
  border-radius: 2px;
  transition: transform 0.4s ease;
}

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

/* 页脚样式 */
.footer {
  text-align: center;
  padding: 3rem 0;
  font-size: 0.75rem;
  font-weight: 300;
  letter-spacing: 2px;
  color: #999;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .nav-link {
    font-size: 0.85rem;
    letter-spacing: 1px;
  }

  .image-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 2rem 1rem;
  }

  .magazine-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 2rem 1rem;
  }

  .magazine-image-large {
    height: 400px;
  }

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

/* 加载动画 */
@keyframes pulse {
  0%, 100% {
    opacity: 0.6;
  }
  50% {
    opacity: 1;
  }
}

.loading-placeholder {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: pulse 1.5s ease-in-out infinite;
}