:root {
  --primary-color: #e85a71;
  --primary-light: #ff8fa3;
  --primary-dark: #c43d54;
  --accent-color: #f8b739;
  --text-color: #2d2d2d;
  --text-light: #666666;
  --background-color: #fffbf5;
  --background-cream: #fef6e8;
  --card-background: #ffffff;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
  --border-radius: 16px;
  --border-radius-lg: 24px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.8;
  color: var(--text-color);
  background-color: var(--background-color);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Hero Section */
.hero {
  background: linear-gradient(180deg, var(--background-cream) 0%, var(--background-color) 100%);
  padding: 80px 24px 0;
  position: relative;
  overflow: hidden;
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-text {
  padding-right: 40px;
}

.app-label {
  font-size: 1rem;
  color: var(--text-light);
  font-weight: 500;
  margin-bottom: 8px;
}

.app-label-sub {
  font-size: 1.25rem;
  color: var(--text-light);
  font-weight: 500;
  margin-bottom: 16px;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--text-color);
  margin-bottom: 4px;
  letter-spacing: -0.02em;
}

.tagline {
  font-size: 1.5rem;
  color: var(--primary-color);
  font-weight: 500;
  margin-bottom: 24px;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-light);
  margin-bottom: 40px;
  line-height: 2;
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: flex-end;
}

.hero-image img {
  max-width: 100%;
  max-height: 600px;
  object-fit: contain;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
}

.hero-wave {
  position: relative;
  margin-top: -60px;
}

.hero-wave svg {
  display: block;
  width: 100%;
  height: 120px;
}

/* CTA Button */
.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: white;
  padding: 16px 32px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  box-shadow: 0 4px 20px rgba(232, 90, 113, 0.4);
  transition: all 0.3s ease;
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 30px rgba(232, 90, 113, 0.5);
}

.cta-button.large {
  padding: 20px 48px;
  font-size: 1.1rem;
}

.apple-icon::before {
  content: "";
  display: inline-block;
  width: 20px;
  height: 24px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 384 512'%3E%3Cpath fill='white' d='M318.7 268.7c-.2-36.7 16.4-64.4 50-84.8-18.8-26.9-47.2-41.7-84.7-44.6-35.5-2.8-74.3 20.7-88.5 20.7-15 0-49.4-19.7-76.4-19.7C63.3 141.2 4 184.8 4 273.5q0 39.3 14.4 81.2c12.8 36.7 59 126.7 107.2 125.2 25.2-.6 43-17.9 75.8-17.9 31.8 0 48.3 17.9 76.4 17.9 48.6-.7 90.4-82.5 102.6-119.3-65.2-30.7-61.7-90-61.7-91.9zm-56.6-164.2c27.3-32.4 24.8-61.9 24-72.5-24.1 1.4-52 16.4-67.9 34.9-17.5 19.8-27.8 44.3-25.6 71.9 26.1 2 49.9-11.4 69.5-34.3z'/%3E%3C/svg%3E");
  background-size: contain;
  background-repeat: no-repeat;
}

/* Section Styles */
section {
  padding: 100px 0;
}

.section-title {
  text-align: center;
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-color);
}

.section-subtitle {
  text-align: center;
  font-size: 1.1rem;
  color: var(--text-light);
  margin-bottom: 60px;
}

/* Features Section */
.features {
  background: var(--card-background);
}

.feature-showcase {
  display: flex;
  flex-direction: column;
  gap: 100px;
}

.feature-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.feature-item.reverse {
  direction: rtl;
}

.feature-item.reverse > * {
  direction: ltr;
}

.feature-image {
  display: flex;
  justify-content: center;
}

.feature-image img {
  max-width: 100%;
  max-height: 500px;
  object-fit: contain;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  transition: transform 0.3s ease;
}

.feature-image img:hover {
  transform: scale(1.02);
}

.feature-content {
  padding: 20px;
}

.feature-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--background-cream) 0%, #fff 100%);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.feature-icon svg {
  width: 32px;
  height: 32px;
  stroke: var(--primary-color);
}

.feature-content h3 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-color);
}

.feature-content p {
  font-size: 1.1rem;
  color: var(--text-light);
  line-height: 1.9;
}

/* How to Use Section */
.how-to-use {
  background: var(--background-cream);
}

.steps-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}

.step-card {
  background: var(--card-background);
  padding: 48px 40px;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  text-align: center;
  max-width: 360px;
  flex: 1;
  min-width: 280px;
}

.step-number {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 auto 24px;
}

.step-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-color);
}

.step-card p {
  color: var(--text-light);
  font-size: 1rem;
  line-height: 1.8;
}

.step-arrow {
  display: flex;
  align-items: center;
}

.step-arrow svg {
  width: 48px;
  height: 48px;
  stroke: var(--primary-light);
}

/* Stats Section */
.stats-section {
  background: var(--card-background);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.stat-item {
  text-align: center;
  padding: 40px 32px;
  background: var(--background-cream);
  border-radius: var(--border-radius);
  transition: transform 0.3s ease;
}

.stat-item:hover {
  transform: translateY(-8px);
}

.stat-icon {
  width: 72px;
  height: 72px;
  background: var(--card-background);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  box-shadow: var(--shadow-sm);
}

.stat-icon svg {
  width: 36px;
  height: 36px;
  stroke: var(--primary-color);
}

.stat-item h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-color);
}

.stat-item p {
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* Testimonials Section */
.testimonials {
  background: var(--background-cream);
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.testimonial-card {
  background: var(--card-background);
  padding: 40px 32px;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.testimonial-stars {
  margin-bottom: 20px;
}

.testimonial-stars span {
  color: var(--accent-color);
  font-size: 1.25rem;
  letter-spacing: 4px;
}

.testimonial-card p {
  color: var(--text-color);
  font-size: 1.05rem;
  line-height: 1.8;
}

/* Target Users Section */
.target-section {
  background: var(--card-background);
}

.target-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.target-item {
  background: var(--background-cream);
  padding: 32px 24px;
  border-radius: var(--border-radius);
  text-align: center;
  transition: transform 0.3s ease;
}

.target-item:hover {
  transform: translateY(-4px);
}

.target-icon {
  font-size: 2.5rem;
  display: block;
  margin-bottom: 16px;
}

.target-item p {
  color: var(--text-color);
  font-weight: 500;
  font-size: 0.95rem;
}

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  text-align: center;
  color: white;
}

.cta-section h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 1.2rem;
  opacity: 0.9;
  margin-bottom: 40px;
}

.cta-section .cta-button {
  background: white;
  color: var(--primary-color);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.cta-section .cta-button:hover {
  box-shadow: 0 6px 30px rgba(0, 0, 0, 0.3);
}

.cta-section .apple-icon::before {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 384 512'%3E%3Cpath fill='%23e85a71' d='M318.7 268.7c-.2-36.7 16.4-64.4 50-84.8-18.8-26.9-47.2-41.7-84.7-44.6-35.5-2.8-74.3 20.7-88.5 20.7-15 0-49.4-19.7-76.4-19.7C63.3 141.2 4 184.8 4 273.5q0 39.3 14.4 81.2c12.8 36.7 59 126.7 107.2 125.2 25.2-.6 43-17.9 75.8-17.9 31.8 0 48.3 17.9 76.4 17.9 48.6-.7 90.4-82.5 102.6-119.3-65.2-30.7-61.7-90-61.7-91.9zm-56.6-164.2c27.3-32.4 24.8-61.9 24-72.5-24.1 1.4-52 16.4-67.9 34.9-17.5 19.8-27.8 44.3-25.6 71.9 26.1 2 49.9-11.4 69.5-34.3z'/%3E%3C/svg%3E");
}

/* Contact Section */
.contact-section {
  background: var(--background-cream);
  text-align: center;
  padding: 80px 0;
}

.contact-section p {
  color: var(--text-light);
  margin-bottom: 24px;
}

.contact-link {
  display: inline-block;
  color: var(--primary-color);
  font-weight: 600;
  text-decoration: none;
  padding: 12px 32px;
  border: 2px solid var(--primary-color);
  border-radius: 50px;
  transition: all 0.3s ease;
}

.contact-link:hover {
  background: var(--primary-color);
  color: white;
}

/* Footer */
.footer {
  background: var(--text-color);
  color: white;
  padding: 40px 0;
}

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

.footer-logo {
  font-size: 1.25rem;
  font-weight: 700;
}

.footer-copyright {
  font-size: 0.875rem;
  opacity: 0.7;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }

  .hero-text {
    padding-right: 0;
  }

  .hero h1 {
    font-size: 2.75rem;
  }

  .feature-item,
  .feature-item.reverse {
    grid-template-columns: 1fr;
    gap: 40px;
    direction: ltr;
    text-align: center;
  }

  .feature-content {
    padding: 0;
  }

  .feature-icon {
    margin: 0 auto 24px;
  }

  .stats-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .testimonial-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  .hero {
    padding: 60px 16px 0;
  }

  .hero h1 {
    font-size: 2.25rem;
  }

  .tagline {
    font-size: 1.25rem;
  }

  .hero-description {
    font-size: 1rem;
  }

  .hero-image img {
    max-height: 450px;
  }

  section {
    padding: 60px 0;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .section-subtitle {
    font-size: 1rem;
    margin-bottom: 40px;
  }

  .feature-showcase {
    gap: 60px;
  }

  .feature-image img {
    max-height: 400px;
  }

  .feature-content h3 {
    font-size: 1.5rem;
  }

  .steps-container {
    flex-direction: column;
  }

  .step-arrow {
    transform: rotate(90deg);
  }

  .step-card {
    max-width: 100%;
    padding: 32px 24px;
  }

  .cta-section h2 {
    font-size: 1.75rem;
  }

  .cta-button.large {
    padding: 16px 32px;
    font-size: 1rem;
  }

  .footer-content {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 2rem;
  }

  .target-grid {
    grid-template-columns: 1fr;
  }

  .cta-button {
    padding: 14px 24px;
    font-size: 0.95rem;
  }
}