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

/* 根元素设置 */
:root {
  --bg-primary: #F9F7F5;
  --text-primary: #2C2C2C;
  --text-light: #8A8A8A;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
}

/* 全局字体与排版 */
body {
  font-family: 'Times New Roman', 'SimSun', serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.8;
  letter-spacing: 0.1em;
  font-weight: 300;
  overflow-x: hidden;
}

/* 导航栏 */
nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(249, 247, 245, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid rgba(44, 44, 44, 0.1);
}

nav ul {
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
  max-width: 1400px;
  margin: 0 auto;
}

nav a {
  color: var(--text-primary);
  text-decoration: none;
  font-size: 0.875rem;
  text-transform: uppercase;
  transition: opacity 0.3s ease;
}

nav a:hover {
  opacity: 0.6;
}

/* 页脚 */
footer {
  text-align: center;
  padding: var(--spacing-lg) 0;
  color: var(--text-light);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
}

/* 首页全屏Banner */
.hero-banner {
  position: relative;
  height: 100vh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-banner img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-text {
  position: relative;
  z-index: 10;
  color: #FFFFFF;
  font-size: 3rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  text-align: center;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

/* Collection页面网格布局 */
.collection-grid {
  max-width: 1400px;
  margin: calc(80px + var(--spacing-xl)) auto var(--spacing-xl);
  padding: 0 var(--spacing-lg);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.collection-item {
  text-align: center;
}

.collection-item img {
  width: 100%;
  height: auto;
  aspect-ratio: 1/1;
  object-fit: cover;
  display: block;
}

.collection-item p {
  margin-top: var(--spacing-md);
  font-size: 0.875rem;
  color: var(--text-light);
  letter-spacing: 0.15em;
}

/* Detail页面左右布局 */
.detail-container {
  max-width: 1400px;
  margin: calc(80px + var(--spacing-xl)) auto var(--spacing-xl);
  padding: 0 var(--spacing-lg);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.detail-text {
  padding-right: var(--spacing-lg);
}

.detail-text h1 {
  font-size: 2rem;
  font-weight: 300;
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.15em;
}

.detail-text p {
  font-size: 0.875rem;
  color: var(--text-light);
  line-height: 2;
  letter-spacing: 0.1em;
}

.detail-image img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* 响应式布局 - 移动端 */
@media (max-width: 768px) {
  nav {
    padding: var(--spacing-sm) var(--spacing-md);
  }

  nav ul {
    justify-content: space-around;
  }

  nav a {
    font-size: 0.75rem;
  }

  .hero-text {
    font-size: 1.5rem;
    padding: 0 var(--spacing-md);
  }

  .collection-grid {
    grid-template-columns: 1fr;
    margin: calc(60px + var(--spacing-md)) auto var(--spacing-md);
    padding: 0 var(--spacing-md);
    gap: var(--spacing-md);
  }

  .detail-container {
    grid-template-columns: 1fr;
    margin: calc(60px + var(--spacing-md)) auto var(--spacing-md);
    padding: 0 var(--spacing-md);
    gap: var(--spacing-md);
  }

  .detail-text {
    padding-right: 0;
  }

  .detail-text h1 {
    font-size: 1.5rem;
  }
}

/* 响应式布局 - 平板端 */
@media (min-width: 769px) and (max-width: 1024px) {
  .collection-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }

  .hero-text {
    font-size: 2.5rem;
  }
}