@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;500;600;700&display=swap');

:root {
  --color-primary: #1a1a1a;
  --color-secondary: #4a4a4a;
  --color-accent: #8b7355;
  --color-muted: #f5f5f5;
  --color-white: #ffffff;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --font-serif: 'Noto Serif SC', serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-serif);
  color: var(--color-primary);
  background-color: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.nav {
  padding: var(--spacing-lg) 0;
  border-bottom: 1px solid #e5e5e5;
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 100;
}

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

.nav-link {
  color: var(--color-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  transition: color 0.3s ease;
  font-weight: 500;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
}

.hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2xl) 0;
  background: linear-gradient(135deg, #fafafa 0%, #f0f0f0 100%);
}

.hero-content {
  text-align: center;
  max-width: 800px;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.1em;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.8;
}

.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  background-color: var(--color-primary);
  color: var(--color-white);
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  transition: all 0.3s ease;
  border: 1px solid var(--color-primary);
}

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

.section {
  padding: var(--spacing-2xl) 0;
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 600;
  text-align: center;
  margin-bottom: var(--spacing-lg);
  letter-spacing: 0.08em;
}

.section-subtitle {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
  color: var(--color-secondary);
  line-height: 1.8;
}

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

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.card {
  background-color: var(--color-white);
  overflow: hidden;
  transition: transform 0.3s ease;
}

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

.card-image {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.card-content {
  padding: var(--spacing-md);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  letter-spacing: 0.05em;
}

.card-text {
  color: var(--color-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.footer {
  border-top: 1px solid #e5e5e5;
  padding: var(--spacing-lg) 0;
  text-align: center;
  color: var(--color-secondary);
  font-size: 0.9rem;
  margin-top: var(--spacing-2xl);
}

@media (max-width: 768px) {
  .nav-list {
    gap: var(--spacing-md);
    flex-wrap: wrap;
  }
  
  .nav-link {
    font-size: 0.85rem;
  }
  
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .hero {
    min-height: 60vh;
  }
  
  .section {
    padding: var(--spacing-xl) 0;
  }
}

@media (max-width: 480px) {
  .nav-list {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .grid {
    grid-template-columns: 1fr;
  }
}