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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.6;
  color: #333;
  background: #fff;
  overflow-x: hidden;
}

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

/* ヒーローセクション */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(248, 250, 252, 0.95) 100%);
  overflow: hidden;
}

.floating-colors {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.color-bubble {
  position: absolute;
  border-radius: 50%;
  opacity: 0.6;
  animation: float 8s ease-in-out infinite;
  filter: blur(1px);
}

.color-bubble:nth-child(1) {
  width: 120px;
  height: 120px;
  background: linear-gradient(45deg, #FF6FD8, #C651E6);
  top: 10%;
  left: 5%;
  animation-delay: 0s;
}

.color-bubble:nth-child(2) {
  width: 80px;
  height: 80px;
  background: linear-gradient(45deg, #4ECDC4, #44A08D);
  top: 20%;
  right: 10%;
  animation-delay: 2s;
}

.color-bubble:nth-child(3) {
  width: 100px;
  height: 100px;
  background: linear-gradient(45deg, #FFE066, #FF9A9E);
  bottom: 15%;
  left: 8%;
  animation-delay: 4s;
}

.color-bubble:nth-child(4) {
  width: 60px;
  height: 60px;
  background: linear-gradient(45deg, #A8E6CF, #7FCDCD);
  bottom: 25%;
  right: 15%;
  animation-delay: 6s;
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0px) scale(1);
  }

  50% {
    transform: translateY(-20px) scale(1.05);
  }
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.hero p {
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  color: #64748b;
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-button {
  display: inline-block;
  background: linear-gradient(135deg, #FF6FD8 0%, #3813C2 100%);
  color: white;
  padding: 18px 40px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.3s ease;
  box-shadow: 0 8px 25px rgba(255, 111, 216, 0.3);
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 35px rgba(255, 111, 216, 0.4);
}

/* セクション共通スタイル */
.section {
  padding: 80px 0;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 1.2rem;
  color: #64748b;
  text-align: center;
  margin-bottom: 60px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* サービス紹介 */
.service-intro {
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.service-demo {
  display: flex;
  align-items: center;
  gap: 60px;
  margin-top: 60px;
}

.phone-mockup {
  flex: 1;
  max-width: 300px;
  margin: 0 auto;
}

.phone {
  background: #1f2937;
  padding: 20px;
  border-radius: 40px;
  position: relative;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.phone-screen {
  background: white;
  border-radius: 20px;
  padding: 30px 20px;
  min-height: 400px;
}

.color-card {
  background: white;
  border-radius: 20px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.color-display {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(45deg, #8B5CF6, #A855F7);
  margin: 0 auto 20px;
  box-shadow: 0 8px 25px rgba(139, 92, 246, 0.3);
}

.service-content {
  flex: 1;
}

.service-content h3 {
  font-size: 1.5rem;
  margin-bottom: 16px;
  color: #1f2937;
}

.service-content p {
  color: #64748b;
  margin-bottom: 16px;
}

/* 色で伝える理由 */
.color-reasons {
  background: white;
}

.reasons-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
  margin-top: 60px;
}

.reason-card {
  background: white;
  padding: 40px 30px;
  border-radius: 20px;
  text-align: center;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
  border: 1px solid #f1f5f9;
  transition: transform 0.3s ease;
}

.reason-card:hover {
  transform: translateY(-5px);
}

.reason-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.reason-card:nth-child(1) .reason-icon {
  background: linear-gradient(45deg, #FF6B6B, #FF8E8E);
}

.reason-card:nth-child(2) .reason-icon {
  background: linear-gradient(45deg, #4ECDC4, #44A08D);
}

.reason-card:nth-child(3) .reason-icon {
  background: linear-gradient(45deg, #FFE066, #FFCC5C);
}

/* 投稿例 */
.examples {
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.examples-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 60px;
}

.example-card {
  background: white;
  padding: 30px;
  border-radius: 20px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.example-card:hover {
  transform: translateY(-5px);
}

.example-color {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  margin-bottom: 20px;
}

.example-card:nth-child(1) .example-color {
  background: linear-gradient(45deg, #8B5CF6, #A855F7);
}

.example-card:nth-child(2) .example-color {
  background: linear-gradient(45deg, #F59E0B, #EAB308);
}

.example-card:nth-child(3) .example-color {
  background: linear-gradient(45deg, #06B6D4, #0891B2);
}

.example-card:nth-child(4) .example-color {
  background: linear-gradient(45deg, #EF4444, #DC2626);
}

/* 体験の変化 */
.transformation {
  background: white;
}

.testimonials {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
  margin-top: 60px;
}

.testimonial {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 40px 30px;
  border-radius: 20px;
  text-align: center;
}

.testimonial-quote {
  font-size: 1.1rem;
  margin-bottom: 20px;
  font-style: italic;
}

.testimonial-author {
  font-weight: 600;
  opacity: 0.9;
}

/* 使い方ステップ */
.steps {
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.steps-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
  margin-top: 60px;
}

.step {
  background: white;
  padding: 40px 30px;
  border-radius: 20px;
  text-align: center;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
  position: relative;
}

.step-number {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(45deg, #FF6FD8, #3813C2);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: bold;
  margin: 0 auto 20px;
}

/* フッターCTA */
.footer-cta {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  text-align: center;
  padding: 80px 0;
}

.footer-cta h2 {
  font-size: clamp(2rem, 4vw, 2.5rem);
  margin-bottom: 30px;
}

.footer-cta .cta-button {
  background: white;
  color: #667eea;
  margin-top: 20px;
}

.footer-links {
  margin-top: 40px;
  display: flex;
  justify-content: center;
  gap: 30px;
  flex-wrap: wrap;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

/* レスポンシブ */
@media (max-width: 768px) {
  .service-demo {
    flex-direction: column;
    gap: 40px;
  }

  .reasons-grid,
  .examples-grid,
  .testimonials,
  .steps-container {
    grid-template-columns: 1fr;
  }

  .footer-links {
    flex-direction: column;
    gap: 15px;
  }
}