:root {
  --primary-color: #1a5f7a;
  --secondary-color: #57c5b6;
  --accent-color: #159895;
  --text-color: #2c3e50;
  --text-light: #6c757d;
  --bg-color: #ffffff;
  --bg-light: #f8f9fa;
  --bg-dark: #1a1a2e;
  --border-color: #e9ecef;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
  --radius: 8px;
  --radius-lg: 16px;
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Noto Sans JP", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-color);
  background-color: var(--bg-color);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--accent-color);
}

img {
  max-width: 100%;
  height: auto;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 1rem;
}

h1 {
  font-size: 2.5rem;
}
h2 {
  font-size: 2rem;
}
h3 {
  font-size: 1.5rem;
}
h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: 1rem;
}

.btn {
  display: inline-block;
  padding: 12px 28px;
  font-size: 1rem;
  font-weight: 500;
  text-align: center;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.btn-primary:hover {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
  color: white;
}

.btn-secondary {
  background-color: var(--secondary-color);
  color: white;
  border-color: var(--secondary-color);
}

.btn-secondary:hover {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
  color: white;
}

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

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

.header {
  background-color: var(--bg-color);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-top {
  background-color: var(--primary-color);
  color: white;
  padding: 8px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
}

.header-top .header-nav-mobile {
  display: none;
}

.header-label {
  font-weight: 500;
}

.header-main {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.logo img {
  height: 50px;
  width: auto;
}

.header-nav {
  display: flex;
  gap: 30px;
}

.header-nav a {
  color: var(--text-color);
  font-weight: 500;
  padding: 8px 0;
  position: relative;
}

.header-nav a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: var(--transition);
}

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

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
}

.menu-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--text-color);
  border-radius: 3px;
  transition: var(--transition);
}

.hero {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -1;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(26, 95, 122, 0.9) 0%, rgba(21, 152, 149, 0.7) 100%);
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
  padding: 60px;
  color: white;
}

.hero-content h1 {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-content p {
  font-size: 1.125rem;
  margin-bottom: 1.5rem;
  opacity: 0.95;
}

.section-desc {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 3rem;
  color: var(--text-light);
  font-size: 1.1rem;
}

section {
  padding: 80px 0;
}

section h2 {
  text-align: center;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.benefits {
  background-color: var(--bg-light);
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 3rem;
}

.benefit-card {
  background: white;
  padding: 30px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.benefit-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.benefit-card h3 {
  color: var(--primary-color);
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.benefit-card p {
  color: var(--text-light);
  margin-bottom: 0;
}

.benefits-cta {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.testimonials {
  background-color: white;
}

.testimonials h3 {
  text-align: center;
  color: var(--accent-color);
  margin: 3rem 0 2rem;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-bottom: 2rem;
}

.testimonial-card {
  background: var(--bg-light);
  padding: 30px;
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--secondary-color);
}

.testimonial-card p {
  font-style: italic;
  margin-bottom: 1rem;
}

.testimonial-card .author {
  color: var(--primary-color);
  font-weight: 500;
}

.before-after-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 40px;
  margin-bottom: 3rem;
}

.before-after-item {
  background: var(--bg-light);
  padding: 20px;
  border-radius: var(--radius-lg);
}

.ba-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
  margin-bottom: 1rem;
}

.ba-image {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
}

.ba-image img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.ba-label {
  position: absolute;
  top: 10px;
  left: 10px;
  background: var(--primary-color);
  color: white;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.wholesale-promo {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
  color: white;
}

.wholesale-promo h2 {
  color: white;
  text-align: left;
}

.wholesale-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.wholesale-image {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.wholesale-text p {
  opacity: 0.95;
}

.wholesale-text .btn {
  margin-top: 1rem;
  background: white;
  color: var(--primary-color);
  border-color: white;
}

.wholesale-text .btn:hover {
  background: var(--secondary-color);
  border-color: var(--secondary-color);
  color: white;
}

.faq-preview {
  background-color: var(--bg-light);
}

.faq-list {
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  background: white;
  margin-bottom: 15px;
  border-radius: var(--radius);
  padding: 25px;
  box-shadow: var(--shadow);
}

.faq-item h3 {
  color: var(--primary-color);
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
}

.faq-item p {
  color: var(--text-light);
  margin-bottom: 0;
}

.contact-section {
  background-color: white;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
}

.contact-form-wrapper h3,
.contact-info h3 {
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.contact-form {
  margin-top: 2rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: inherit;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(26, 95, 122, 0.1);
}

.contact-info {
  background: var(--bg-light);
  padding: 30px;
  border-radius: var(--radius-lg);
}

.info-item {
  margin-bottom: 1.5rem;
}

.info-item h4 {
  color: var(--primary-color);
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.info-item p {
  margin-bottom: 0.5rem;
}

.info-links ul {
  list-style: none;
}

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

.footer {
  background-color: var(--bg-dark);
  color: white;
  padding: 60px 0 30px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 3rem;
}

.footer-logo img {
  height: 40px;
  margin-bottom: 1rem;
  filter: brightness(0) invert(1);
}

.footer-logo p {
  opacity: 0.8;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 30px;
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.8);
}

.footer-nav a:hover {
  color: var(--secondary-color);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 30px;
  text-align: center;
}

.footer-bottom p {
  opacity: 0.6;
  font-size: 0.875rem;
  margin: 0;
}

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: white;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
  padding: 25px;
  z-index: 9999;
  display: none;
}

.cookie-banner.show {
  display: block;
}

.cookie-content {
  max-width: 1200px;
  margin: 0 auto;
}

.cookie-content h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.cookie-content p {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 1rem;
}

.cookie-options {
  display: flex;
  gap: 20px;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.cookie-options label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
}

.cookie-buttons {
  display: flex;
  gap: 15px;
}

.cookie-buttons .btn {
  padding: 10px 20px;
  font-size: 0.9rem;
}

.page-header {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
  color: white;
  padding: 80px 0;
  text-align: center;
}

.page-header h1 {
  margin-bottom: 1rem;
}

.page-header p {
  max-width: 700px;
  margin: 0 auto;
  opacity: 0.95;
}

.product-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
  padding: 60px 0;
}

.product-hero-image {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.product-hero-content ul {
  list-style: none;
  margin: 2rem 0;
}

.product-hero-content li {
  padding: 10px 0;
  padding-left: 30px;
  position: relative;
}

.product-hero-content li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--secondary-color);
  font-weight: bold;
}

.product-section {
  padding: 60px 0;
}

.product-section:nth-child(even) {
  background-color: var(--bg-light);
}

.product-table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.product-table th,
.product-table td {
  padding: 15px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.product-table th {
  background-color: var(--primary-color);
  color: white;
  font-weight: 600;
}

.product-table tr:hover {
  background-color: var(--bg-light);
}

.product-table img {
  width: 100px;
  height: 80px;
  object-fit: cover;
  border-radius: var(--radius);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.step-card {
  background: white;
  padding: 30px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  position: relative;
}

.step-card::before {
  content: attr(data-step);
  position: absolute;
  top: -15px;
  left: 30px;
  background: var(--secondary-color);
  color: white;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
}

.step-card h4 {
  color: var(--primary-color);
  margin-top: 10px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 40px;
}

.gallery-item {
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.gallery-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.gallery-image {
  position: relative;
}

.gallery-image img {
  width: 100%;
  height: 250px;
  object-fit: cover;
}

.gallery-image .label {
  position: absolute;
  top: 10px;
  left: 10px;
  background: var(--primary-color);
  color: white;
  padding: 5px 15px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

.gallery-info {
  padding: 25px;
}

.gallery-info h3 {
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.gallery-tags {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.gallery-tags span {
  background: var(--secondary-color);
  color: white;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
}

.customer-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.customer-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.customer-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.customer-card-content {
  padding: 25px;
}

.customer-card-content p {
  font-style: italic;
  color: var(--text-light);
}

.customer-card-content .author {
  color: var(--primary-color);
  font-weight: 600;
  margin-top: 1rem;
  display: block;
}

.mechanism-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin: 3rem 0;
}

.mechanism-card {
  text-align: center;
  padding: 30px;
  background: var(--bg-light);
  border-radius: var(--radius-lg);
}

.mechanism-card h4 {
  color: var(--primary-color);
  margin: 1rem 0;
}

.mechanism-number {
  display: inline-block;
  width: 50px;
  height: 50px;
  background: var(--secondary-color);
  color: white;
  border-radius: 50%;
  line-height: 50px;
  font-weight: bold;
  font-size: 1.25rem;
}

.safety-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.safety-card {
  background: white;
  padding: 25px;
  border-radius: var(--radius);
  border-left: 4px solid var(--secondary-color);
}

.safety-card h4 {
  color: var(--primary-color);
}

.case-study {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 40px;
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 30px;
  box-shadow: var(--shadow);
}

.case-study img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-study-content {
  padding: 30px;
}

.case-study-content h3 {
  color: var(--primary-color);
}

.case-tags {
  display: flex;
  gap: 10px;
  margin-top: 1rem;
}

.case-tags span {
  background: var(--bg-light);
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
}

.info-table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
}

.info-table th,
.info-table td {
  padding: 15px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.info-table th {
  background-color: var(--bg-light);
  width: 200px;
  color: var(--primary-color);
}

.timeline {
  max-width: 800px;
  margin: 0 auto;
}

.timeline-item {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 30px;
  padding: 30px 0;
  border-bottom: 1px solid var(--border-color);
}

.timeline-item:last-child {
  border-bottom: none;
}

.timeline-date {
  font-weight: 600;
  color: var(--primary-color);
}

.timeline-content h4 {
  color: var(--accent-color);
  margin-bottom: 0.5rem;
}

.two-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.representative-section {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 50px;
  align-items: start;
  background: var(--bg-light);
  padding: 40px;
  border-radius: var(--radius-lg);
}

.representative-section img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.representative-info h3 {
  color: var(--primary-color);
}

.representative-info .title {
  color: var(--accent-color);
  font-weight: 500;
  margin-bottom: 1.5rem;
}

.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.philosophy-card {
  background: white;
  padding: 30px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.philosophy-card h4 {
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.business-card {
  text-align: center;
}

.business-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  margin-bottom: 1rem;
}

.business-card h4 {
  color: var(--primary-color);
}

.contact-page-form {
  max-width: 600px;
  margin: 0 auto;
  background: var(--bg-light);
  padding: 40px;
  border-radius: var(--radius-lg);
}

.faq-accordion {
  max-width: 900px;
  margin: 0 auto;
}

.faq-accordion .faq-item {
  cursor: pointer;
}

.faq-accordion .faq-item h3 {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-accordion .faq-item h3::after {
  content: "+";
  font-size: 1.5rem;
  color: var(--primary-color);
}

.faq-section-title {
  text-align: center;
  color: var(--accent-color);
  margin: 3rem 0 2rem;
  font-size: 1.5rem;
}

.purchase-table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.purchase-table th,
.purchase-table td {
  padding: 15px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.purchase-table th {
  background-color: var(--primary-color);
  color: white;
}

.nav-links {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

@media (max-width: 992px) {
  .wholesale-content,
  .product-hero,
  .contact-grid,
  .two-column,
  .representative-section {
    grid-template-columns: 1fr;
  }

  .mechanism-grid,
  .safety-grid,
  .philosophy-grid,
  .business-grid {
    grid-template-columns: 1fr 1fr;
  }

  .case-study {
    grid-template-columns: 1fr;
  }

  .case-study img {
    height: 250px;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }
  h2 {
    font-size: 1.5rem;
  }
  h3 {
    font-size: 1.25rem;
  }

  .header-nav {
    display: none;
  }

  .header-main .btn {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .header-top .header-nav-mobile {
    display: none;
  }

  .hero-content {
    padding: 40px 20px;
  }

  .hero-content h1 {
    font-size: 2rem;
  }

  section {
    padding: 50px 0;
  }

  .benefits-grid,
  .testimonials-grid,
  .before-after-grid,
  .gallery-grid,
  .customer-cards,
  .steps-grid {
    grid-template-columns: 1fr;
  }

  .mechanism-grid,
  .safety-grid,
  .philosophy-grid,
  .business-grid {
    grid-template-columns: 1fr;
  }

  .footer-content {
    flex-direction: column;
    gap: 30px;
  }

  .footer-nav {
    flex-direction: column;
    gap: 10px;
  }

  .cookie-options {
    flex-direction: column;
    gap: 10px;
  }

  .cookie-buttons {
    flex-direction: column;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .product-table {
    display: block;
    overflow-x: auto;
  }

  .ba-images {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }

  .btn {
    padding: 10px 20px;
    font-size: 0.9rem;
  }

  .benefits-cta {
    flex-direction: column;
    align-items: center;
  }

  .nav-links {
    flex-direction: column;
    align-items: center;
  }
}