@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #2a2a2a;
  --text-primary: #ffffff;
  --text-secondary: #b0b0b0;
  --accent-gold: #d4af37;
  --accent-hover: #e5c158;
  --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.5);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  scroll-behavior: smooth;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: var(--transition-smooth);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--accent-gold);
}

.nav-links {
  display: flex;
  gap: 3rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  letter-spacing: 1px;
  position: relative;
  transition: var(--transition-smooth);
  padding: 0.5rem 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-gold);
  transition: var(--transition-smooth);
}

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

.nav-links a:hover {
  color: var(--accent-gold);
}

.hero-slider {
  position: relative;
  height: 100vh;
  overflow: hidden;
  margin-top: 80px;
}

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

.slide.active {
  opacity: 1;
}

.slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.scroll-indicator {
  position: absolute;
  bottom: 3rem;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(-10px);
  }
  60% {
    transform: translateX(-50%) translateY(-5px);
  }
}

.scroll-indicator::after {
  content: '↓';
  font-size: 2rem;
  color: var(--text-secondary);
}

.section {
  padding: 8rem 0;
  position: relative;
}

.section-title {
  font-size: 3rem;
  font-weight: 300;
  letter-spacing: 3px;
  text-align: center;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.section-subtitle {
  font-size: 1.2rem;
  font-weight: 300;
  letter-spacing: 2px;
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 4rem;
}

.grid {
  display: grid;
  gap: 2rem;
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.card {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition-smooth);
  background: var(--bg-secondary);
  border-radius: 0;
}

.card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
  display: block;
}

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

.card-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2rem;
  background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
  transform: translateY(100%);
  transition: var(--transition-smooth);
}

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

.card-title {
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: 1px;
  margin-bottom: 0.5rem;
}

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

.feature-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  margin: 6rem 0;
}

.feature-image {
  width: 100%;
  height: 600px;
  object-fit: cover;
}

.feature-content h3 {
  font-size: 2rem;
  font-weight: 400;
  letter-spacing: 2px;
  margin-bottom: 1.5rem;
}

.feature-content p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 1rem;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}

.detail-item {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.detail-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.detail-item:hover img {
  transform: scale(1.1);
}

.btn {
  display: inline-block;
  padding: 1rem 3rem;
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--accent-gold);
  text-decoration: none;
  letter-spacing: 2px;
  font-weight: 500;
  transition: var(--transition-smooth);
  margin-top: 2rem;
}

.btn:hover {
  background: var(--accent-gold);
  color: var(--bg-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
}

.cta-section {
  text-align: center;
  padding: 6rem 0;
}

footer {
  text-align: center;
  padding: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-secondary);
  font-size: 0.9rem;
  letter-spacing: 1px;
}

.visual-dict {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.dict-item {
  position: relative;
  height: 300px;
  overflow: hidden;
  background: var(--bg-secondary);
  cursor: pointer;
}

.dict-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.dict-item:hover img {
  transform: scale(1.08);
}

.dict-label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.8);
  text-align: center;
  font-weight: 500;
  letter-spacing: 1px;
}

.principle-box {
  background: var(--bg-secondary);
  padding: 2rem;
  margin: 1rem 0;
  border-left: 3px solid var(--accent-gold);
}

.principle-box h4 {
  font-size: 1.2rem;
  font-weight: 500;
  margin-bottom: 1rem;
  letter-spacing: 1px;
}

.principle-box p {
  color: var(--text-secondary);
  line-height: 1.8;
}

@media (max-width: 768px) {
  .nav-links {
    gap: 1.5rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .grid-3, .grid-2 {
    grid-template-columns: 1fr;
  }

  .feature-section {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .feature-image {
    height: 400px;
  }

  .container {
    padding: 0 1rem;
  }

  nav {
    padding: 1rem;
  }

  .section {
    padding: 4rem 0;
  }
}

@media (max-width: 480px) {
  .logo {
    font-size: 1.2rem;
  }

  .nav-links {
    gap: 1rem;
    font-size: 0.9rem;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .hero-slider {
    margin-top: 70px;
  }
}