/* 全局样式定义 */
:root {
  --primary-color: #f5f5f0;
  --secondary-color: #d4a574;
  --text-color: #333333;
  --light-gray: #e8e8e8;
  --warm-brown: #8b4513;
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--primary-color);
}

/* 导航栏样式 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(245, 245, 240, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: 1rem 0;
  border-bottom: 1px solid var(--light-gray);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 2rem;
}

.logo {
  width: 40px;
  height: 40px;
  background: linear-gradient(45deg, var(--secondary-color), var(--warm-brown));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
  font-size: 18px;
}

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

.nav-links a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

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

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--secondary-color);
  transition: width 0.3s ease;
}

.nav-links a:hover::after {
  width: 100%;
}

/* 主内容区域 */
.main-content {
  margin-top: 80px;
  min-height: calc(100vh - 160px);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* 轮播图样式 */
.carousel {
  position: relative;
  width: 100%;
  height: 70vh;
  overflow: hidden;
  border-radius: var(--border-radius);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.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-controls {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
}

.carousel-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: var(--transition);
}

.carousel-dot.active {
  background: var(--secondary-color);
  width: 30px;
  border-radius: 6px;
}

/* 引文区样式 */
.quote-section {
  text-align: center;
  padding: 4rem 0;
  font-size: 2rem;
  color: var(--text-color);
  font-weight: 300;
  letter-spacing: 2px;
}

/* 精选预览区 */
.preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  padding: 2rem 0;
}

.preview-item {
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}

.preview-item:hover {
  transform: translateY(-5px);
}

.preview-item img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: var(--border-radius);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: var(--transition);
}

.preview-item:hover img {
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.preview-item h3 {
  margin-top: 1rem;
  color: var(--text-color);
  font-weight: 400;
  font-size: 1.2rem;
}

/* 瀑布流布局 */
.masonry {
  column-count: 3;
  column-gap: 2rem;
  padding: 2rem 0;
}

.masonry-item {
  break-inside: avoid;
  margin-bottom: 2rem;
}

.masonry-item img {
  width: 100%;
  border-radius: var(--border-radius);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: var(--transition);
}

.masonry-item:hover img {
  transform: scale(1.02);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.masonry-item h3 {
  margin: 1rem 0 0.5rem;
  color: var(--text-color);
  font-weight: 400;
}

.masonry-item p {
  color: #666;
  font-size: 0.9rem;
  line-height: 1.4;
}

/* 材质故事区块 */
.material-section {
  padding: 4rem 0;
}

.material-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
  margin-top: 3rem;
}

.material-card {
  text-align: center;
  padding: 2rem;
  background: white;
  border-radius: var(--border-radius);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
  transition: var(--transition);
}

.material-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}

.material-card img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  border-radius: var(--border-radius);
  margin-bottom: 1.5rem;
}

.material-card h3 {
  color: var(--warm-brown);
  font-size: 1.5rem;
  margin-bottom: 1rem;
  font-weight: 500;
}

.material-card p {
  color: #666;
  line-height: 1.8;
  font-size: 0.95rem;
}

/* 系法艺廊 */
.tutorial-section {
  padding: 4rem 0;
}

.tutorial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 3rem;
  margin-top: 3rem;
}

.tutorial-card {
  background: white;
  border-radius: var(--border-radius);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
  overflow: hidden;
  transition: var(--transition);
}

.tutorial-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}

.tutorial-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 1rem;
  padding: 1.5rem;
}

.tutorial-steps img {
  width: 100%;
  height: 120px;
  object-fit: cover;
  border-radius: var(--border-radius);
}

.tutorial-content {
  padding: 1.5rem;
}

.tutorial-content h3 {
  color: var(--warm-brown);
  font-size: 1.3rem;
  margin-bottom: 1rem;
  font-weight: 500;
}

.tutorial-content ol {
  color: #666;
  line-height: 1.8;
  padding-left: 1.5rem;
}

.tutorial-content li {
  margin-bottom: 0.5rem;
}

/* 页脚样式 */
footer {
  text-align: center;
  padding: 2rem 0;
  border-top: 1px solid var(--light-gray);
  color: #666;
  font-size: 0.9rem;
}

/* 页面标题 */
.page-title {
  text-align: center;
  font-size: 3rem;
  color: var(--text-color);
  margin: 3rem 0;
  font-weight: 300;
  letter-spacing: 1px;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .nav-links {
    gap: 1rem;
    font-size: 0.9rem;
  }
  
  .carousel {
    height: 50vh;
  }
  
  .quote-section {
    font-size: 1.5rem;
    padding: 2rem 1rem;
  }
  
  .masonry {
    column-count: 2;
    column-gap: 1rem;
  }
  
  .material-grid,
  .tutorial-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .page-title {
    font-size: 2rem;
    margin: 2rem 0;
  }
  
  .container {
    padding: 0 1rem;
  }
}

@media (max-width: 480px) {
  .nav-links {
    gap: 0.5rem;
    font-size: 0.8rem;
  }
  
  .masonry {
    column-count: 1;
  }
  
  .preview-grid {
    grid-template-columns: 1fr;
  }
  
  .tutorial-steps {
    grid-template-columns: 1fr;
  }
}