:root {
  --color-gray: #8B8B8B;
  --color-beige: #F5F5DC;
  --color-pink: #E8C4C4;
  --color-taupe: #D4C5B9;
  --color-white: #FAFAFA;
  --color-dark: #333333;
  --font-primary: "思源黑体 Light", "Noto Sans SC Light", "Helvetica Neue Light", sans-serif;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
}

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

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

body {
  font-family: var(--font-primary);
  background-color: var(--color-white);
  color: var(--color-dark);
  line-height: 1.8;
  overflow-x: hidden;
}

header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: rgba(250, 250, 250, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: var(--spacing-md) 0;
}

nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-lg);
}

nav a {
  text-decoration: none;
  color: var(--color-dark);
  font-size: 1rem;
  font-weight: 300;
  letter-spacing: 2px;
  transition: color 0.3s ease;
  position: relative;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 1px;
  background-color: var(--color-gray);
  transition: width 0.3s ease;
}

nav a:hover {
  color: var(--color-gray);
}

nav a:hover::after {
  width: 100%;
}

.divider {
  height: 1px;
  background: linear-gradient(to right, transparent, var(--color-taupe), transparent);
  margin: var(--spacing-sm) auto 0;
  width: 60%;
}

main {
  margin-top: 100px;
}

.hero-section {
  position: relative;
  height: 100vh;
  overflow: hidden;
}

.carousel {
  position: relative;
  width: 100%;
  height: 100%;
}

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

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

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

.carousel-caption {
  position: absolute;
  bottom: 20%;
  left: 50%;
  transform: translateX(-50%);
  background-color: rgba(255, 255, 255, 0.85);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: 2px;
}

.carousel-caption p {
  font-size: 1.2rem;
  letter-spacing: 3px;
  color: var(--color-dark);
  font-weight: 300;
}

.content-section {
  padding: var(--spacing-xl) var(--spacing-md);
  max-width: 1400px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 300;
  letter-spacing: 5px;
  margin-bottom: var(--spacing-lg);
  color: var(--color-gray);
}

.section-subtitle {
  text-align: center;
  font-size: 1rem;
  letter-spacing: 2px;
  margin-bottom: var(--spacing-xl);
  color: var(--color-gray);
  opacity: 0.8;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.card {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.3s ease;
}

.card:hover {
  transform: translateY(-10px);
}

.card img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.card:hover img {
  transform: scale(1.05);
}

.card-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
  padding: var(--spacing-md);
  color: var(--color-white);
  transform: translateY(100%);
  transition: transform 0.3s ease;
}

.card:hover .card-caption {
  transform: translateY(0);
}

.card-caption p {
  font-size: 1rem;
  letter-spacing: 2px;
  line-height: 1.6;
}

.explore-more {
  text-align: center;
  padding: var(--spacing-lg) 0;
}

.explore-more a {
  text-decoration: none;
  color: var(--color-gray);
  font-size: 1rem;
  letter-spacing: 2px;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  transition: gap 0.3s ease;
}

.explore-more a:hover {
  gap: var(--spacing-md);
}

.arrow {
  font-size: 1.5rem;
}

.theme-block {
  margin-bottom: var(--spacing-xl);
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.theme-block.fade-in {
  opacity: 1;
  transform: translateY(0);
}

.theme-image {
  width: 100%;
  height: 600px;
  object-fit: cover;
  margin-bottom: var(--spacing-md);
}

.theme-text {
  text-align: center;
  font-size: 1rem;
  letter-spacing: 2px;
  color: var(--color-gray);
  font-style: italic;
  padding: 0 var(--spacing-md);
}

.quote {
  text-align: center;
  font-size: 1.2rem;
  letter-spacing: 3px;
  color: var(--color-gray);
  font-style: italic;
  padding: var(--spacing-xl) var(--spacing-md);
  max-width: 800px;
  margin: 0 auto;
  line-height: 2;
}

footer {
  background-color: var(--color-white);
  padding: var(--spacing-md) 0;
  border-top: 1px solid var(--color-taupe);
}

footer p {
  text-align: center;
  font-size: 0.9rem;
  letter-spacing: 2px;
  color: var(--color-gray);
}

@media (max-width: 768px) {
  .section-title {
    font-size: 1.8rem;
  }
  
  .grid-3 {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .card img {
    height: 400px;
  }
  
  .theme-image {
    height: 400px;
  }
  
  nav ul {
    gap: var(--spacing-md);
  }
  
  .carousel-caption p {
    font-size: 1rem;
  }
}