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

body {
  font-family: 'Noto Sans JP', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background: #ffffff;
  color: #1f2937;
  line-height: 1.5;
}

h1 {
  font-size: 1.5rem;
  font-weight: 500;
  line-height: 1.5;
  color: #1f2937;
}

h2 {
  font-size: 1.25rem;
  font-weight: 500;
  line-height: 1.5;
  color: #1f2937;
}

h3 {
  font-size: 1.125rem;
  font-weight: 500;
  line-height: 1.5;
  color: #1f2937;
}

h4 {
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.5;
  color: #1f2937;
}

button {
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.5;
  cursor: pointer;
  background: none;
  border: none;
  color: inherit;
}

p {
  line-height: 1.7;
}

/* Header */
#header {
  position: fixed;
  top: 0;
  width: 100%;
  background: #ffffff;
  border-bottom: 1px solid #ddd;
  z-index: 50;
}

.nav-container {
  max-width: 980px;
  margin: 0 auto;
  padding: 1rem;
}

.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-desktop {
  display: none;
  gap: 2rem;
}

.nav-desktop button {
  color: #374151;
  transition: color 0.3s;
}

.nav-desktop button:hover {
  color: #be1521;
}

.menu-toggle {
  display: block;
  color: #374151;
  padding: 0.5rem;
}

.nav-mobile {
  margin-top: 1rem;
  padding-bottom: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.nav-mobile button {
  text-align: left;
  color: #374151;
  transition: color 0.3s;
}

.nav-mobile button:hover {
  color: #be1521;
}

/* Hero Section */
.hero-section {
  padding-top: 4rem;
}

.hero-container {
  position: relative;
}

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

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
}

.hero-content {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
}

.hero-text {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 1rem;
  width: 100%;
}

.hero-text h2 {
  color: white;
  margin-bottom: 1.5rem;
  font-size: 1.875rem;
  font-weight: 600;
  line-height: 1.3;
}

.hero-text p {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 2rem;
  line-height: 1.7;
}

/* Services Section */
.services-section {
  padding: 2rem 0;
  background: white;
}

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 1rem;
}

.section-header {
  text-align: center;
  margin-bottom: 2rem;
}

.section-header h2 {
  color: #1f2937;
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

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

.service-card {
  padding: 1.5rem;
  border: 1px solid #e5e7eb;
  border-radius: 0.5rem;
  background: #f9f5e9;
}

.service-image {
  margin-bottom: 1rem;
}

.service-image img {
  width: 100%;
  height: 12rem;
  object-fit: cover;
  border-radius: 0.25rem;
}

.service-card h3 {
  margin-bottom: 0.75rem;
  color: #1f2937;
}

.service-card p {
  color: #4b5563;
}

/* Company Section */
.company-section {
  padding: 2rem 0;
  background: #f9fafb;
}

.company-card {
  background: white;
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
  padding: 2rem;
}

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

.company-item {
  padding-top: 1.5rem;
}

.company-item:first-child {
  padding-top: 0;
}

.company-item.border-top {
  border-top: 1px solid #e5e7eb;
}

.company-label {
  color: #6b7280;
  margin-bottom: 0.25rem;
  font-size: 0.875rem;
}

.company-value {
  color: #1f2937;
  line-height: 1.7;
}

/* Footer */
footer {
  background: #111827;
  color: white;
  padding: 3rem 0;
}

.footer-grid {
  display: grid;
  gap: 2rem;
  margin-bottom: 2rem;
}

footer h3 {
  margin-bottom: 1rem;
  color: white;
}

footer h4 {
  margin-bottom: 1rem;
  color: white;
}

.footer-description {
  color: #9ca3af;
  font-size: 0.875rem;
}

.footer-info {
  list-style: none;
  color: #9ca3af;
  font-size: 0.875rem;
}

.footer-info li {
  margin-bottom: 0.5rem;
}

.footer-email {
  margin-top: 1rem;
}

.footer-info a {
  color: #9ca3af;
  text-decoration: none;
  transition: color 0.3s;
}

.footer-info a:hover {
  color: white;
}

.footer-copyright {
  border-top: 1px solid #374151;
  padding-top: 2rem;
  text-align: center;
  color: #9ca3af;
  font-size: 0.875rem;
}

/* Tablet and Desktop */
@media (min-width: 768px) {
  .nav-desktop {
    display: flex;
  }

  .menu-toggle {
    display: none;
  }

  .nav-mobile {
    display: none !important;
  }

  .hero-section {
    padding-top: 5rem;
  }

  .hero-image {
    height: 500px;
  }

  .hero-text h2 {
    font-size: 2.25rem;
  }

  .services-section {
    padding: 3rem 0;
  }

  .section-header {
    margin-bottom: 4rem;
  }

  .section-header h2 {
    font-size: 2.25rem;
  }

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

  .company-section {
    padding: 5rem 0;
  }

  .company-card {
    padding: 3rem;
  }

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

  .company-item.full-width {
    grid-column: 1 / -1;
  }

  .company-item.border-top {
    border-top: none;
    padding-top: 0;
  }

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

/* Large Desktop */
@media (min-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}