/* 全局样式 */
:root {
  --primary-color: #1a1a1a;
  --secondary-color: #666;
  --accent-color: #333;
  --background-color: #fafafa;
  --text-color: #1a1a1a;
  --border-color: #e5e5e5;
  --spacing-unit: 1rem;
}

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

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

/* 导航栏样式 */
nav {
  background: white;
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

nav a {
  text-decoration: none;
  color: var(--primary-color);
  font-weight: 500;
  transition: opacity 0.3s ease;
}

nav a:hover {
  opacity: 0.7;
}

/* 主容器 */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* 横幅样式 */
.banner {
  position: relative;
  margin: 2rem 0;
  overflow: hidden;
  border-radius: 8px;
}

.banner img {
  width: 100%;
  height: auto;
  display: block;
}

.banner-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: white;
  text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

.banner h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.banner p {
  font-size: 1.25rem;
  max-width: 600px;
}

/* 系列展示样式 */
.collections {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 4rem 0;
}

.collection {
  background: white;
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.3s ease;
}

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

.collection img {
  width: 100%;
  height: 250px;
  object-fit: cover;
}

.collection-content {
  padding: 1.5rem;
}

.collection h2 {
  margin-bottom: 0.5rem;
  color: var(--primary-color);
}

.collection p {
  color: var(--secondary-color);
}

/* 品牌理念样式 */
.brand-philosophy {
  text-align: center;
  padding: 4rem 2rem;
  margin: 4rem 0;
  background: white;
  border-radius: 8px;
}

.brand-philosophy h2 {
  margin-bottom: 2rem;
  color: var(--primary-color);
}

.brand-philosophy p {
  max-width: 800px;
  margin: 0 auto;
  color: var(--secondary-color);
  line-height: 1.8;
}

/* 内容区块样式 */
.content-section {
  margin: 3rem 0;
}

.content-section h2 {
  margin-bottom: 2rem;
  color: var(--primary-color);
  text-align: center;
}

.content-block {
  background: white;
  padding: 2rem;
  margin: 2rem 0;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.feature {
  text-align: center;
}

.feature h3 {
  margin-bottom: 1rem;
  color: var(--primary-color);
}

/* 型格指南样式 */
.style-articles {
  display: grid;
  gap: 2rem;
  margin: 2rem 0;
}

.article {
  background: white;
  padding: 2rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.article h3 {
  margin-bottom: 1rem;
  color: var(--primary-color);
}

/* 页脚样式 */
footer {
  text-align: center;
  padding: 2rem;
  margin-top: 4rem;
  border-top: 1px solid var(--border-color);
  color: var(--secondary-color);
}

/* 响应式设计 */
@media (max-width: 768px) {
  nav ul {
    flex-wrap: wrap;
    gap: 1rem;
  }
  
  .banner h1 {
    font-size: 2rem;
  }
  
  .banner p {
    font-size: 1rem;
  }
  
  .collections {
    grid-template-columns: 1fr;
  }
  
  .features {
    grid-template-columns: 1fr;
  }
}

/* 图片过渡效果 */
img {
  transition: opacity 0.3s ease;
}

img:hover {
  opacity: 0.9;
}

/* 链接样式 */
a {
  color: var(--accent-color);
  transition: opacity 0.3s ease;
}

a:hover {
  opacity: 0.8;
}

/* 按钮样式 */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: var(--primary-color);
  color: white;
  text-decoration: none;
  border-radius: 4px;
  transition: opacity 0.3s ease;
}

.btn:hover {
  opacity: 0.9;
}