@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400&display=swap');

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

:root {
  --color-white: #fafafa;
  --color-sand: #d4c4b0;
  --color-gray: #9e9e9e;
  --color-mist: #e0e0e0;
  --color-brown: #8b6f47;
  --color-olive: #6b7c59;
  --color-text: #333333;
  --color-text-light: #999999;
}

body {
  font-family: 'Helvetica Neue', 'Noto Sans SC', sans-serif;
  background-color: var(--color-white);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
  animation: fadeIn 0.4s ease-in;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  gap: 60px;
  padding: 40px 0;
  background-color: rgba(250, 250, 250, 0.95);
  backdrop-filter: blur(10px);
  z-index: 100;
  border-bottom: 1px solid rgba(158, 158, 158, 0.1);
}

nav a {
  font-size: 14px;
  font-weight: 300;
  letter-spacing: 2px;
  color: var(--color-text);
  text-decoration: none;
  position: relative;
  transition: all 0.3s ease;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 1px;
  background-color: var(--color-gray);
  transition: width 0.3s ease;
}

nav a:hover::after {
  width: 30px;
}

.back-arrow {
  position: fixed;
  top: 40px;
  left: 40px;
  font-size: 24px;
  color: var(--color-text);
  text-decoration: none;
  z-index: 101;
  transition: transform 0.3s ease;
}

.back-arrow:hover {
  transform: translateX(-5px);
}

main {
  min-height: 100vh;
  padding-top: 100px;
}

.hero-section {
  width: 100%;
  height: calc(100vh - 100px);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

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

.grid-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 80px 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.grid-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.grid-item {
  aspect-ratio: 3/4;
  overflow: hidden;
  background-color: var(--color-mist);
}

.grid-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

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

.text-block {
  padding: 100px 40px 0;
  text-align: right;
}

.text-block p {
  font-size: 18px;
  font-weight: 300;
  line-height: 2;
  letter-spacing: 1px;
  color: var(--color-text);
}

.text-block .year {
  display: block;
  margin-top: 40px;
  font-size: 14px;
  color: var(--color-text-light);
}

.detail-section {
  width: 100%;
  min-height: calc(100vh - 100px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  position: relative;
}

.detail-image {
  max-width: 600px;
  max-height: 90vh;
  width: 100%;
  height: auto;
  object-fit: contain;
}

.product-code {
  position: absolute;
  bottom: 60px;
  right: 60px;
  font-size: 10px;
  font-weight: 300;
  letter-spacing: 1px;
  color: var(--color-text-light);
}

footer {
  padding: 60px 0;
  text-align: center;
  border-top: 1px solid rgba(158, 158, 158, 0.1);
}

footer p {
  font-size: 12px;
  font-weight: 300;
  letter-spacing: 2px;
  color: var(--color-text-light);
}

@media (max-width: 768px) {
  nav {
    gap: 30px;
    padding: 30px 0;
  }

  nav a {
    font-size: 12px;
  }

  .back-arrow {
    top: 30px;
    left: 30px;
    font-size: 20px;
  }

  .grid-container {
    grid-template-columns: 1fr;
    padding: 60px 20px;
    gap: 60px;
  }

  .grid-images {
    gap: 20px;
  }

  .text-block {
    padding: 0 20px;
    text-align: left;
  }

  .text-block p {
    font-size: 16px;
  }

  .detail-section {
    padding: 20px;
  }

  .product-code {
    bottom: 40px;
    right: 40px;
  }
}