/* 全局样式定义 */
:root {
  --primary-color: #f5f5f5;
  --text-color: #333;
  --accent-color: #999;
  --border-color: #e0e0e0;
}

/* 基础样式重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--primary-color);
}

/* 导航栏样式 */
header {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(245, 245, 245, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
}

nav ul {
  display: flex;
  justify-content: center;
  list-style: none;
  padding: 1.5rem 0;
}

nav ul li {
  margin: 0 2rem;
}

nav ul li a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 300;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  transition: color 0.3s ease;
}

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

/* 主要内容区域 */
main {
  margin-top: 70px;
  min-height: calc(100vh - 110px);
}

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

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

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

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

.carousel-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: white;
  text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.carousel-text h2 {
  font-size: 2.5rem;
  font-weight: 300;
  margin-bottom: 1rem;
  letter-spacing: 0.1em;
}

.carousel-text p {
  font-size: 1rem;
  font-weight: 300;
  letter-spacing: 0.05em;
}

/* 网格布局样式 */
.grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  padding: 3rem;
  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;
}

.grid-item-title {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
  color: white;
  padding: 2rem 1rem 1rem;
}

.grid-item-title h3 {
  font-size: 1.2rem;
  font-weight: 300;
  letter-spacing: 0.05em;
}

/* 故事页面样式 */
.story-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

.story-section {
  margin-bottom: 4rem;
  text-align: center;
}

.story-section img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  margin-bottom: 2rem;
}

.story-section h3 {
  font-size: 1.5rem;
  font-weight: 300;
  margin-bottom: 1rem;
  letter-spacing: 0.05em;
}

.story-section p {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--accent-color);
}

/* 视觉页面样式 */
.visual-container {
  max-width: 600px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

.visual-item {
  margin-bottom: 3rem;
  text-align: center;
}

.visual-item img {
  width: 100%;
  height: auto;
  margin-bottom: 1rem;
}

.visual-item p {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--accent-color);
  font-style: italic;
}

/* 页脚样式 */
footer {
  text-align: center;
  padding: 2rem;
  color: var(--accent-color);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}

/* 响应式设计 */
@media (max-width: 768px) {
  nav ul {
    padding: 1rem 0;
  }
  
  nav ul li {
    margin: 0 1rem;
  }
  
  .carousel-text h2 {
    font-size: 1.8rem;
  }
  
  .grid-container {
    padding: 2rem 1rem;
    gap: 1rem;
  }
  
  .story-container,
  .visual-container {
    padding: 2rem 1rem;
  }
}

/* 动画效果 */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.fade-in {
  animation: fadeIn 1s ease-in;
}