:root {
  --bg-primary: #ffffff;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --accent: #f97316;
  --font-base: 'Inter', 'Noto Sans JP', sans-serif;
}

body {
  font-family: var(--font-base);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  line-height: 1.8;
}

.header {
  background-color: transparent;
}

.header-scrolled {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.gradient-text {
  background: linear-gradient(135deg, #1d4ed8, #3b82f6, #f97316);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.feature-card:hover {
  transform: translateY(-4px);
  transition: transform 0.3s ease;
}

.pricing-card {
  transition: transform 0.3s ease;
}

.pricing-card:hover {
  transform: translateY(-4px);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
  padding-bottom: 0;
}

.faq-icon {
  transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

p.text-gray-400 {
  color: var(--text-secondary);
}

a[href="#"]:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}