/* リセットCSS */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* 変数定義 */
:root {
  --primary-color: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #3b82f6;
  --secondary-color: #7c3aed;
  --accent-color: #f59e0b;
  --success-color: #10b981;
  --danger-color: #ef4444;
  --text-dark: #0f172a;
  --text-medium: #475569;
  --text-light: #64748b;
  --bg-white: #ffffff;
  --bg-light: #f8fafc;
  --bg-gray: #f1f5f9;
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1),
    0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1),
    0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --max-width: 1280px;
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-full: 9999px;
}

/* ベーススタイル */
body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--bg-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ナビゲーションバー */
.navbar {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  padding: 1rem 0;
}

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

.nav-logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-dark);
  letter-spacing: -0.02em;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  color: var(--text-medium);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-link:hover {
  color: var(--primary-color);
}

.nav-cta {
  background: var(--primary-color);
  color: white;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 600;
  transition: all 0.2s;
}

.nav-cta:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* ヒーローセクション */
.hero {
  padding: 80px 0 100px;
  background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg-white) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -25%;
  width: 150%;
  height: 150%;
  background: radial-gradient(
    circle,
    rgba(37, 99, 235, 0.05) 0%,
    transparent 70%
  );
  pointer-events: none;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
}

.hero-badge {
  display: inline-block;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  color: white;
  padding: 0.375rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  letter-spacing: -0.03em;
}

.text-gradient {
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.25rem;
  color: var(--text-medium);
  line-height: 1.6;
  margin-bottom: 2rem;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  margin-bottom: 3rem;
}

.btn-primary-large,
.btn-secondary-large {
  padding: 1rem 2rem;
  font-size: 1.125rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-primary-large {
  background: var(--primary-color);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary-large:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary-large {
  background: var(--bg-white);
  color: var(--text-dark);
  border: 2px solid var(--border-color);
}

.btn-secondary-large:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.hero-stats {
  display: flex;
  gap: 3rem;
}

.stat {
  text-align: center;
}

.stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-color);
  display: block;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-light);
}

.hero-image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
}

/* 信頼のロゴセクション */
.trust-logos {
  padding: 60px 0;
  background: var(--bg-light);
  text-align: center;
}

.trust-text {
  color: var(--text-light);
  margin-bottom: 2rem;
  font-weight: 500;
}

.logo-grid {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 3rem;
  flex-wrap: wrap;
}

.logo-grid img {
  height: 40px;
  opacity: 0.6;
  transition: opacity 0.2s;
}

.logo-grid img:hover {
  opacity: 1;
}

/* 課題セクション */
.problem {
  padding: 100px 0;
  background: var(--bg-white);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 3rem;
  letter-spacing: -0.02em;
}

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

.problem-card {
  background: var(--bg-light);
  padding: 2rem;
  border-radius: var(--radius-lg);
  text-align: center;
  transition: all 0.3s;
}

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

.problem-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.problem-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.problem-card p {
  color: var(--text-medium);
  line-height: 1.6;
}

/* ソリューションセクション */
.solution {
  padding: 100px 0;
  background: var(--bg-light);
}

.solution-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.section-subtitle {
  font-size: 1.25rem;
  color: var(--text-medium);
  text-align: center;
  margin-bottom: 3rem;
  line-height: 1.6;
}

.solution-features {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.solution-feature {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.check-icon {
  color: var(--success-color);
  flex-shrink: 0;
}

.solution-image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

/* 機能詳細セクション */
.features-detail {
  padding: 100px 0;
  background: var(--bg-white);
}

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

.feature-card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

.feature-image {
  width: 100%;
  height: 200px;
  overflow: hidden;
}

.feature-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feature-card h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 1.5rem 1.5rem 0.75rem;
}

.feature-card p {
  color: var(--text-medium);
  margin: 0 1.5rem 1.5rem;
  line-height: 1.6;
}

/* 使い方セクション */
.how-it-works {
  padding: 100px 0;
  background: var(--bg-light);
}

.steps {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  margin-top: 3rem;
}

.step {
  flex: 1;
  text-align: center;
  padding: 2rem;
}

.step-number {
  width: 60px;
  height: 60px;
  background: var(--primary-color);
  color: white;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.step h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.step p {
  color: var(--text-medium);
  line-height: 1.6;
}

.step-arrow {
  color: var(--text-light);
  font-size: 2rem;
}

/* お客様の声セクション */
.testimonials {
  padding: 100px 0;
  background: var(--bg-white);
}

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

.testimonial-card {
  background: var(--bg-light);
  padding: 2rem;
  border-radius: var(--radius-lg);
  position: relative;
}

.testimonial-text {
  font-style: italic;
  line-height: 1.8;
  margin-bottom: 1.5rem;
  color: var(--text-medium);
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.author-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
}

.author-name {
  font-weight: 600;
}

.author-title {
  font-size: 0.875rem;
  color: var(--text-light);
}

/* 料金セクション */
.pricing-section {
  padding: 100px 0;
  background: var(--bg-light);
}

.pricing-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.single-plan {
  max-width: 480px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--bg-white);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  position: relative;
  transition: all 0.3s;
}

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

.pricing-card.featured {
  border-color: var(--primary-color);
  transform: scale(1.05);
}

.featured-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-color);
  color: white;
  padding: 0.25rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
}

.plan-name {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.plan-price {
  display: flex;
  align-items: baseline;
  margin-bottom: 0.5rem;
}

.price-amount {
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary-color);
}

.price-unit {
  font-size: 1.25rem;
  color: var(--text-medium);
  margin-left: 0.5rem;
}

.plan-description {
  color: var(--text-light);
  margin-bottom: 2rem;
}

.plan-features {
  list-style: none;
  margin-bottom: 2rem;
}

.plan-features li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-color);
}

.plan-features li:last-child {
  border-bottom: none;
}

.check {
  color: var(--success-color);
  flex-shrink: 0;
}

.plan-cta {
  display: block;
  width: 100%;
  padding: 0.875rem;
  background: var(--primary-color);
  color: white;
  text-align: center;
  text-decoration: none;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all 0.2s;
}

.plan-cta:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

.plan-cta.secondary {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.plan-cta.secondary:hover {
  background: var(--primary-color);
  color: white;
}

.pricing-note {
  text-align: center;
  margin-top: 2rem;
  color: var(--text-light);
}

/* FAQ セクション */
.faq {
  padding: 100px 0;
  background: var(--bg-white);
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  max-width: 1000px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-light);
  padding: 2rem;
  border-radius: var(--radius-lg);
}

.faq-question {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.faq-answer {
  color: var(--text-medium);
  line-height: 1.6;
}

/* 最終CTA */
.final-cta {
  padding: 100px 0;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  color: white;
  text-align: center;
}

.cta-content h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.cta-content p {
  font-size: 1.25rem;
  opacity: 0.9;
  margin-bottom: 2rem;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
}

.btn-ghost {
  background: transparent;
  color: white;
  padding: 1rem 2rem;
  font-size: 1.125rem;
  font-weight: 600;
  text-decoration: none;
  border: 2px solid white;
  border-radius: var(--radius-md);
  transition: all 0.2s;
}

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

.cta-features {
  display: flex;
  justify-content: center;
  gap: 2rem;
}

.cta-feature {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  opacity: 0.9;
}

/* フッター */
.footer {
  padding: 60px 0 40px;
  background: var(--bg-light);
  border-top: 1px solid var(--border-color);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.footer-description {
  color: var(--text-medium);
  line-height: 1.6;
}

.footer-heading {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--text-medium);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--primary-color);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  text-align: center;
  color: var(--text-light);
}

/* レスポンシブ対応 */
@media (max-width: 1024px) {
  .hero-content,
  .solution-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-title {
    font-size: 3rem;
  }

  .features-grid,
  .testimonial-grid,
  .pricing-cards {
    grid-template-columns: 1fr;
  }

  .pricing-card.featured {
    transform: none;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }

  .hero {
    padding: 60px 0;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-cta {
    flex-direction: column;
  }

  .hero-stats {
    justify-content: center;
  }

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

  .steps {
    flex-direction: column;
  }

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

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

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

  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  section {
    padding: 60px 0;
  }
}

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

  .section-title {
    font-size: 2rem;
  }

  .price-amount {
    font-size: 2.5rem;
  }

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