/* 全局样式文件 */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500&display=swap');

:root {
  --color-primary: #1a1a1a;
  --color-secondary: #ffffff;
  --color-border: #6c6c6c;
  --color-hover: #e8e8e8;
  --font-chinese: 'Noto Sans SC', sans-serif;
  --font-english: 'Helvetica Neue', sans-serif;
}

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

body {
  font-family: var(--font-chinese), var(--font-english), sans-serif;
  color: var(--color-primary);
  background-color: var(--color-secondary);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 导航栏样式 */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--color-border);
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 20px;
}

.navbar .logo {
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--color-primary);
  text-decoration: none;
}

.navbar .nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.navbar .nav-links a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 300;
  transition: color 0.3s ease;
}

.navbar .nav-links a:hover {
  color: var(--color-border);
}

/* 主内容区域 */
.main-content {
  margin-top: 80px;
  min-height: calc(100vh - 120px);
}

/* 图片悬停效果 */
.image-hover {
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.3s ease, filter 0.3s ease;
}

.image-hover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease, filter 0.3s ease;
  filter: grayscale(50%);
}

.image-hover:hover img {
  transform: scale(1.05);
  filter: grayscale(0%);
}

/* 轮播图样式 */
.carousel {
  position: relative;
  height: 600px;
  overflow: hidden;
  margin-bottom: 4rem;
}

.carousel-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.5s ease;
}

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

.carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 分类入口图标 */
.category-icons {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin: 4rem 0;
}

.category-icon {
  aspect-ratio: 1;
  background-color: var(--color-hover);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.category-icon:hover {
  background-color: var(--color-border);
}

.category-icon svg {
  width: 60px;
  height: 60px;
  fill: var(--color-primary);
}

/* 瀑布流布局 */
.waterfall {
  columns: 3;
  column-gap: 1rem;
}

.waterfall-item {
  break-inside: avoid;
  margin-bottom: 1rem;
  border-radius: 8px;
  overflow: hidden;
}

.waterfall-item img {
  width: 100%;
  height: auto;
  display: block;
}

/* 横向滚动卡片 */
.horizontal-scroll {
  display: flex;
  gap: 2rem;
  overflow-x: auto;
  padding: 2rem 0;
  scroll-behavior: smooth;
}

.horizontal-scroll::-webkit-scrollbar {
  height: 8px;
}

.horizontal-scroll::-webkit-scrollbar-track {
  background: var(--color-hover);
  border-radius: 4px;
}

.horizontal-scroll::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}

.scroll-card {
  flex: 0 0 300px;
  background-color: var(--color-secondary);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.scroll-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.scroll-card .card-content {
  padding: 1rem;
}

.scroll-card .card-title {
  font-size: 1.2rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.scroll-card .card-description {
  color: var(--color-border);
  font-size: 0.9rem;
}

/* 杂志化排版 */
.magazine-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 2rem;
  margin: 4rem 0;
}

.magazine-article {
  background-color: var(--color-secondary);
  border-radius: 8px;
  overflow: hidden;
}

.magazine-article img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

.magazine-article .article-content {
  padding: 2rem;
}

.magazine-article .article-title {
  font-size: 2rem;
  font-weight: 500;
  margin-bottom: 1rem;
}

.magazine-article .article-text {
  color: var(--color-border);
  line-height: 1.8;
}

/* 页脚样式 */
.footer {
  text-align: center;
  padding: 2rem;
  background-color: var(--color-secondary);
  color: var(--color-border);
  font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .navbar .nav-links {
    gap: 1rem;
    font-size: 0.9rem;
  }

  .category-icons {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }

  .waterfall {
    columns: 2;
  }

  .magazine-layout {
    grid-template-columns: 1fr;
  }

  .scroll-card {
    flex: 0 0 250px;
  }
}

@media (max-width: 480px) {
  .waterfall {
    columns: 1;
  }

  .category-icons {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
  }

  .category-icon svg {
    width: 40px;
    height: 40px;
  }
}

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

.fade-in {
  animation: fadeIn 0.5s ease-out;
}

/* 筛选标签样式 */
.filter-tags {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.filter-tag {
  padding: 0.5rem 1rem;
  background-color: var(--color-hover);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.3s ease;
}

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

/* 详情标注样式 */
.detail-annotation {
  position: relative;
  display: inline-block;
}

.detail-annotation .annotation {
  position: absolute;
  background-color: var(--color-primary);
  color: var(--color-secondary);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.8rem;
  white-space: nowrap;
  z-index: 10;
  pointer-events: none;
}

.detail-annotation .annotation::before {
  content: '';
  position: absolute;
  top: 50%;
  right: -8px;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-left: 8px solid var(--color-primary);
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
}

/* 主题标语样式 */
.hero-tagline {
  text-align: center;
  padding: 4rem 0;
  font-size: 3rem;
  font-weight: 300;
  color: var(--color-primary);
  letter-spacing: 0.1em;
}

@media (max-width: 768px) {
  .hero-tagline {
    font-size: 2rem;
    padding: 2rem 0;
  }
}