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

body {
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu",
    "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#app-container {
  background-color: #ffffff;
}

.app {
  min-height: 100vh;
  background-color: #ffffff;
}

.header {
  background-color: #000000;
  padding: 1rem 1.5rem;
}

.header-container {
  max-width: 80rem;
  margin: 0 auto;
}

.header-logo {
  height: 2rem;
}

.banner {
  position: relative;
}

.banner-image-wrapper {
  position: relative;
  width: 100%;
}

.banner-image {
  width: 100%;
  height: auto;
  display: block;
}

.intro {
  padding: 2rem 1.5rem;
}

.intro-container {
  max-width: 56rem;
  margin: 0 auto;
  text-align: center;
}

.intro-title {
  font-size: 1.875rem;
  font-weight: 700;
  color: #000000;
  margin-bottom: 1.5rem;
  letter-spacing: -0.025em;
}

.intro-text {
  font-size: 1rem;
  color: #4b5563;
  line-height: 1.75;
  margin-bottom: 1.5rem;
}

.desktop-only {
  display: none;
}

.campaign-period {
  display: inline-block;
  background-color: #f3f4f6;
  padding: 0.75rem 1.5rem;
  border-radius: 0.125rem;
}

.campaign-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: #1f2937;
}

.campaign-dates {
  font-size: 1rem;
  font-weight: 700;
  color: #000000;
  margin-top: 0.25rem;
}

.products {
  padding: 3rem 1.5rem;
  background-color: #f9fafb;
}

.products-container {
  max-width: 80rem;
  margin: 0 auto;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.product-card {
  background-color: #ffffff;
  border-radius: 0.125rem;
  overflow: hidden;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
}

.product-card:hover {
  box-shadow:
    0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05);
  transform: translateY(-0.25rem);
}

.product-image-wrapper {
  position: relative;
}

.product-image {
  width: 100%;
  aspect-ratio: 1 / 1;
  display: block;
  object-fit: cover;
}

.product-info {
  padding: 1rem;
}

.product-name {
  font-size: 0.875rem;
  font-weight: 500;
  color: #000000;
  margin-bottom: 0.75rem;
  letter-spacing: 0.025em;
  min-height: 2.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-prices {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.original-price {
  font-size: 0.75rem;
  color: #9ca3af;
  text-decoration: line-through;
}

.price-tax {
  font-size: 0.65em;
}

.sale-price {
  font-size: 1.25rem;
  font-weight: 700;
  color: #dc2626;
}

.sale-tax {
  font-size: 0.875rem;
}

.about {
  padding: 3rem 1.5rem;
  background-color: #ffffff;
}

.about-container {
  max-width: 56rem;
  margin: 0 auto;
}

.about-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #000000;
  margin-bottom: 1.5rem;
  text-align: center;
}

.about-text {
  font-size: 0.875rem;
  color: #374151;
  line-height: 1.75;
}

.about-text p {
  margin-bottom: 1rem;
}

.about-text p:last-child {
  margin-bottom: 0;
}

.footer {
  background-color: #ffffff;
  border-top: 1px solid #e5e7eb;
  padding: 3rem 1.5rem;
}

.footer-container {
  max-width: 80rem;
  margin: 0 auto;
  text-align: center;
}

.footer-logo {
  height: 2rem;
  margin: 0 auto 1.5rem;
  opacity: 0.6;
}

.footer-copyright {
  font-size: 0.875rem;
  color: #6b7280;
  letter-spacing: 0.025em;
}

@media (min-width: 768px) {
  .header {
    padding: 1rem 3rem;
  }

  .header-logo {
    height: 2.5rem;
  }

  .intro {
    padding: 3rem 1.5rem;
  }

  .intro-title {
    font-size: 2.25rem;
  }

  .intro-text {
    font-size: 1.125rem;
  }

  .desktop-only {
    display: block;
  }

  .campaign-label {
    font-size: 1rem;
  }

  .campaign-dates {
    font-size: 1.125rem;
  }

  .products-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }

  .product-name {
    font-size: 1rem;
  }

  .original-price {
    font-size: 0.875rem;
  }

  .sale-price {
    font-size: 1.5rem;
  }

  .sale-tax {
    font-size: 1rem;
  }

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

  .about-text {
    font-size: 1rem;
  }
}

@media (min-width: 1024px) {
  .products-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}