:root {
  /* Colors */
  --primary-color: #2563eb;
  --primary-hover: #1d4ed8;
  --secondary-color: #3b82f6;
  --bg-color: #ffffff;
  --bg-light: #f8fafc;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  --white: #ffffff;
  --accent-color: #e11d48;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  
  /* Typography */
  --font-family: 'Inter', 'Noto Sans JP', sans-serif;
  
  /* Shadows */
  --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-primary: 0 4px 14px 0 rgba(37, 99, 235, 0.39);
  
  /* Border Radius */
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
}

/* Reset & BaseStyles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  color: var(--text-main);
  background-color: var(--bg-color);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.text-center { text-align: center; }
.mt-xl { margin-top: 3rem; }
.bg-light { background-color: var(--bg-light); }

/* Typography */
.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-highlight {
  color: var(--primary-color);
  font-weight: 700;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 1rem;
  letter-spacing: -0.025em;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-muted);
}

.sp-br {
  display: none;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
}

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

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

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: 1.125rem;
  border-radius: 999px;
}

.btn-xl {
  padding: 1.25rem 3rem;
  font-size: 1.25rem;
  border-radius: 999px;
}

.shadow-hover:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-primary);
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  padding: 1rem 0;
}

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

.logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--primary-color);
  letter-spacing: -0.025em;
}

/* Sections */
section {
  padding: 6rem 0;
}

/* Hero Section */
.hero {
  padding-top: 10rem;
  padding-bottom: 6rem;
  overflow: hidden;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37,99,235,0.08) 0%, rgba(255,255,255,0) 70%);
  z-index: -1;
}

.hero-container {
  display: flex;
  align-items: center;
  gap: 4rem;
}

.hero-content {
  flex: 1;
}

.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background-color: var(--bg-light);
  color: var(--primary-color);
  border: 1px solid var(--border-color);
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  letter-spacing: -0.025em;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  line-height: 1.8;
}

.hero-cta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.75rem;
}

.cta-note {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-left: 1rem;
}

/* Mockup Card (Hero Right) */
.hero-image-placeholder {
  flex: 1;
  display: flex;
  justify-content: center;
}

.glass-card {
  width: 100%;
  max-width: 400px;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.mockup-header {
  background: #f1f5f9;
  padding: 1rem;
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.dot.red { background: #ef4444; }
.dot.yellow { background: #f59e0b; }
.dot.green { background: #10b981; }

.mockup-body {
  padding: 2rem;
  background: white;
}

.skeleton-line {
  height: 12px;
  background: #e2e8f0;
  border-radius: 4px;
  margin-bottom: 1rem;
  width: 100%;
}
.skeleton-line.title {
  height: 24px;
  width: 60%;
  margin-bottom: 1.5rem;
}
.skeleton-line.short { width: 40%; }
.skeleton-line.flex-end { margin-left: auto; width: 30%; background: var(--primary-color); opacity: 0.2; }

.success-badge {
  background: #ecfdf5;
  color: #059669;
  padding: 0.75rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  text-align: center;
  border: 1px solid #a7f3d0;
}

/* Cards Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.card {
  background: var(--white);
  padding: 2.5rem 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  transition: transform 0.3s ease;
}

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

.card-icon {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  background: var(--bg-light);
  width: 4rem;
  height: 4rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.card-text {
  color: var(--text-muted);
}

/* Features Stack */
.features-list {
  display: flex;
  flex-direction: column;
  gap: 3rem;
  max-width: 800px;
  margin: 0 auto;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 2rem;
  background: var(--white);
  padding: 2.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.feature-number {
  font-size: 3rem;
  font-weight: 800;
  color: var(--bg-light);
  -webkit-text-stroke: 1px var(--primary-color);
  line-height: 1;
}

.feature-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.feature-desc {
  color: var(--text-muted);
}

/* Pricing Card */
.price-card {
  max-width: 500px;
  margin: 0 auto;
  background: var(--white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 2px solid var(--primary-color);
  text-align: center;
}

.price-header {
  background: var(--primary-color);
  color: var(--white);
  padding: 1.5rem;
}

.plan-name {
  font-size: 1.25rem;
  font-weight: 600;
}

.price-body {
  padding: 3rem 2rem;
}

.price-amount {
  margin-bottom: 2rem;
  color: var(--text-main);
}

.price-amount .currency { font-size: 1rem; font-weight: 600; vertical-align: top;}
.price-amount .number { font-size: 4rem; font-weight: 800; line-height: 1; }
.price-amount .tax { font-size: 0.875rem; color: var(--text-muted); }

.price-features {
  text-align: left;
  margin-bottom: 2rem;
}

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

.price-features li span {
  color: var(--primary-color);
  font-weight: bold;
}

.price-note {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: left;
  line-height: 1.5;
}

/* Closing CTA */
.closing {
  background: var(--gradient-primary);
  color: var(--white);
  text-align: center;
}

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

.closing-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
}

.closing-text {
  font-size: 1.125rem;
  margin-bottom: 2.5rem;
  opacity: 0.9;
}

.line-btn {
  background: #00B900;
  color: white;
  border: none;
  font-weight: bold;
  box-shadow: 0 4px 14px 0 rgba(0, 185, 0, 0.39);
}

.line-btn:hover {
  background: #00A000;
}

.line-icon {
  width: 24px;
  height: 24px;
  margin-right: 0.5rem;
}

.cta-note.white-text {
  color: rgba(255,255,255,0.8);
  margin-top: 1rem;
  display: block;
}

/* Footer */
.footer {
  background: var(--text-main);
  color: var(--text-muted);
  padding: 2rem 0;
  text-align: center;
  font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
  html {
    font-size: 14px;
  }
  
  .sp-br {
    display: block;
  }
  
  .hero-container {
    flex-direction: column;
    text-align: center;
  }
  
  .hero-cta {
    align-items: center;
  }
  
  .cta-note {
    margin-left: 0;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  section {
    padding: 4rem 0;
  }
  
  .price-amount .number {
    font-size: 3rem;
  }
}