/* 全局重置与基础配置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-primary: #F9F9F8;
  --color-dark: #2C2C2C;
  --color-beige: #E9E5DF;
  --color-oat: #B8A99A;
  --color-clay: #CFC6B8;
  --color-accent: #D4C4B0;
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  background-color: var(--color-primary);
  color: var(--color-dark);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* 导航栏样式 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.5rem 5%;
  background: rgba(249, 249, 248, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(44, 44, 44, 0.08);
  transition: var(--transition-smooth);
}

.navbar-content {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 3rem;
}

.logo {
  font-size: 1.25rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  color: var(--color-dark);
  text-decoration: none;
  transition: var(--transition-smooth);
}

.logo:hover {
  opacity: 0.7;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  color: var(--color-dark);
  text-decoration: none;
  transition: var(--transition-smooth);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-dark);
  transition: width 0.3s ease;
}

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

/* 英雄区样式 */
.hero-section {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-image {
  position: absolute;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.25);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--color-primary);
}

.hero-title {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 100;
  letter-spacing: 0.15em;
  margin-bottom: 2rem;
  text-transform: uppercase;
}

.hero-subtitle {
  font-size: clamp(1.2rem, 2vw, 1.8rem);
  font-weight: 300;
  letter-spacing: 0.1em;
}

/* 通用容器 */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 5rem 5%;
}

/* 标题样式 */
.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 200;
  letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
  text-align: center;
}

.section-subtitle {
  font-size: 1rem;
  font-weight: 300;
  line-height: 1.9;
  color: rgba(44, 44, 44, 0.8);
  text-align: center;
  max-width: 800px;
  margin: 0 auto 4rem;
}

/* 网格布局 */
.grid-container {
  display: grid;
  gap: 2rem;
  margin-bottom: 4rem;
}

.grid-asymmetric {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  grid-auto-rows: 400px;
}

.grid-item {
  position: relative;
  overflow: hidden;
  border-radius: 2px;
  cursor: pointer;
}

.grid-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.grid-item-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.5rem;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.6), transparent);
  color: white;
  font-size: 0.9rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  opacity: 0;
  transition: var(--transition-smooth);
}

.grid-item:hover .grid-item-caption {
  opacity: 1;
}

/* 按钮样式 */
.btn-group {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  margin-top: 3rem;
}

.btn {
  padding: 1rem 2.5rem;
  font-size: 0.9rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--color-dark);
  background: transparent;
  border: 1px solid var(--color-dark);
  text-decoration: none;
  transition: var(--transition-smooth);
  cursor: pointer;
}

.btn:hover {
  background: var(--color-dark);
  color: var(--color-primary);
}

/* Lightbox */
.lightbox {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.95);
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.lightbox.active {
  display: flex;
}

.lightbox-content {
  max-width: 1200px;
  max-height: 90vh;
  text-align: center;
}

.lightbox-image {
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  margin-bottom: 2rem;
}

.lightbox-caption {
  color: var(--color-primary);
  font-size: 1.2rem;
  font-weight: 300;
  letter-spacing: 0.05em;
}

.lightbox-close {
  position: absolute;
  top: 2rem;
  right: 2rem;
  width: 40px;
  height: 40px;
  cursor: pointer;
  color: var(--color-primary);
  font-size: 2rem;
  line-height: 40px;
  text-align: center;
}

/* 横向滚动 */
.scroll-container {
  display: flex;
  gap: 2rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 2rem 0;
  -webkit-overflow-scrolling: touch;
}

.scroll-container::-webkit-scrollbar {
  height: 4px;
}

.scroll-container::-webkit-scrollbar-track {
  background: var(--color-beige);
}

.scroll-container::-webkit-scrollbar-thumb {
  background: var(--color-oat);
  border-radius: 2px;
}

.scroll-item {
  flex: 0 0 400px;
  scroll-snap-align: start;
  position: relative;
}

.scroll-item img {
  width: 100%;
  height: 500px;
  object-fit: cover;
}

.scroll-item-caption {
  margin-top: 1rem;
  font-size: 0.9rem;
  font-weight: 300;
  color: rgba(44, 44, 44, 0.8);
  font-style: italic;
}

/* 页脚 */
footer {
  padding: 3rem 0;
  text-align: center;
  background: var(--color-beige);
  color: var(--color-dark);
  font-size: 0.9rem;
  font-weight: 300;
  letter-spacing: 0.05em;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .navbar-content {
    gap: 1.5rem;
  }
  
  .nav-links {
    gap: 1.5rem;
  }
  
  .nav-links a {
    font-size: 0.85rem;
  }
  
  .container {
    padding: 3rem 5%;
  }
  
  .grid-asymmetric {
    grid-template-columns: 1fr;
    grid-auto-rows: 300px;
  }
  
  .btn-group {
    flex-direction: column;
    align-items: center;
  }
  
  .scroll-item {
    flex: 0 0 300px;
  }
  
  .scroll-item img {
    height: 400px;
  }
}

@media (max-width: 480px) {
  .navbar {
    padding: 1rem 5%;
  }
  
  .logo {
    font-size: 1rem;
  }
  
  .nav-links {
    gap: 1rem;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
}