/* 全局样式定义 - 极简主义设计风格 */
:root {
  --primary-color: #333;
  --background-light: #fafafa;
  --text-muted: #666;
  --border-light: #e5e5e5;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
}

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

body {
  font-family: "Source Han Sans CN Light", "PingFang SC", -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--background-light);
  color: var(--primary-color);
  line-height: 1.6;
  overflow-x: hidden;
}

/* 导航样式 */
nav {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--border-light);
}

nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
}

nav a {
  text-decoration: none;
  color: var(--primary-color);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  transition: opacity 0.3s ease;
}

nav a:hover {
  opacity: 0.6;
}

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

/* 全屏英雄区域 */
.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.hero-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -1;
}

.hero-content {
  text-align: center;
  color: white;
  z-index: 1;
  padding: var(--spacing-lg);
  background: rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(5px);
}

.hero h1 {
  font-size: 2.5rem;
  font-weight: 300;
  margin-bottom: var(--spacing-sm);
  letter-spacing: 0.2em;
}

.hero p {
  font-size: 1.1rem;
  opacity: 0.9;
  margin-bottom: var(--spacing-md);
}

/* 网格布局 */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  max-width: 1200px;
  margin: 0 auto;
}

.grid-item {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.3s ease;
}

.grid-item:hover {
  transform: scale(1.02);
}

.grid-item img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  display: block;
}

/* 故事页面样式 */
.story-section {
  padding: var(--spacing-lg) var(--spacing-md);
  max-width: 900px;
  margin: 0 auto;
}

.story-section h2 {
  font-size: 1.8rem;
  font-weight: 300;
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.1em;
}

.story-section p {
  color: var(--text-muted);
  margin-bottom: var(--spacing-md);
  line-height: 1.8;
}

.story-image {
  width: 100%;
  height: 500px;
  object-fit: cover;
  margin: var(--spacing-md) 0;
}

/* 视觉画廊样式 */
.gallery {
  position: relative;
  height: 100vh;
  overflow: hidden;
}

.gallery-image {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  max-width: 90%;
  max-height: 90%;
  object-fit: contain;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.gallery-image.active {
  opacity: 1;
}

.gallery-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.8);
  padding: var(--spacing-xs);
  cursor: pointer;
  font-size: 1.5rem;
  transition: opacity 0.3s ease;
}

.gallery-nav:hover {
  opacity: 0.7;
}

.gallery-nav.prev {
  left: var(--spacing-md);
}

.gallery-nav.next {
  right: var(--spacing-md);
}

/* 页脚 */
footer {
  text-align: center;
  padding: var(--spacing-md);
  border-top: 1px solid var(--border-light);
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* 响应式设计 */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 1.8rem;
  }

  .hero p {
    font-size: 0.9rem;
  }

  .grid {
    grid-template-columns: 1fr;
    padding: var(--spacing-sm);
  }

  .gallery-nav {
    font-size: 1rem;
    padding: var(--spacing-xs) 0.5rem;
  }

  nav ul {
    gap: var(--spacing-sm);
    font-size: 0.8rem;
  }

  .story-section {
    padding: var(--spacing-md) var(--spacing-sm);
  }
}

/* 动画效果 */
.fade-in {
  animation: fadeIn 0.8s ease-in;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.slide-up {
  animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}