@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Manrope:wght@400;500;600;700&family=Noto+Sans+JP:wght@400;500;600;700&family=Plus+Jakarta+Sans:wght@500;600;700;800&display=swap');

:root {
  --primary: #031636;
  --primary-container: #1A2B4C;
  --tertiary-fixed-dim: #3CD7FF;
  --surface: #F8F9FA;
  --surface-container-lowest: #FFFFFF;
  --surface-container-low: #F3F4F5;
  --surface-container-high: #ECEEF0;
  --on-surface: #191c1d;
  --on-surface-variant: #5F6368;
  --on-primary: #FFFFFF;
  --secondary-container: #E8EAED;
  --on-secondary-container: #2D3142;
  --outline-variant: #C5C6CF;

  --font-display: 'Plus Jakarta Sans', 'Noto Sans JP', sans-serif;
  --font-body: 'Manrope', 'Noto Sans JP', sans-serif;
  --font-label: 'Inter', 'Noto Sans JP', sans-serif;

  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-full: 9999px;

  --shadow-ambient: 0 12px 48px 0 rgba(26, 43, 76, 0.06);
  --shadow-float: 0 8px 32px 0 rgba(26, 43, 76, 0.12);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--surface);
  color: var(--on-surface);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

ul {
  list-style: none;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container-narrow {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 6rem 0;
}

.section-lg {
  padding: 8rem 0;
}

.text-gradient {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-container) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-family: var(--font-label);
  font-size: 0.9375rem;
  font-weight: 500;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all 0.3s ease;
}

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

.btn-primary:hover {
  background-color: var(--primary-container);
  transform: translateY(-2px);
  box-shadow: var(--shadow-float);
}

.btn-outline {
  background-color: transparent;
  color: var(--primary);
  border: 1px solid rgba(3, 22, 54, 0.15);
}

.btn-outline:hover {
  background-color: var(--surface-container-lowest);
  border-color: var(--primary);
}

.btn-glass {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--primary);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-glass:hover {
  background: rgba(255, 255, 255, 0.95);
}

.btn-gradient {
  background: linear-gradient(135deg, var(--primary-container) 0%, var(--tertiary-fixed-dim) 100%);
  color: var(--on-primary);
}

.btn-gradient:hover {
  box-shadow: 0 8px 32px rgba(60, 215, 255, 0.3);
  transform: translateY(-2px);
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--primary);
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.125rem;
  color: var(--on-surface-variant);
  max-width: 600px;
  margin: 0 auto;
}

.card {
  background-color: var(--surface-container-lowest);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all 0.3s ease;
}

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

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
  background-color: var(--secondary-container);
  color: var(--on-secondary-container);
  font-family: var(--font-label);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-full);
}

.chip-glass {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.4);
}

.label {
  font-family: var(--font-label);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--tertiary-fixed-dim);
}

.display-lg {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.display-md {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.body-lg {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--on-surface-variant);
}

.body-md {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--on-surface-variant);
}

.icon-wrapper {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-container) 100%);
  border-radius: var(--radius-md);
  color: var(--on-primary);
}

@media (max-width: 768px) {
  .section {
    padding: 4rem 0;
  }

  .section-lg {
    padding: 5rem 0;
  }

  .display-lg {
    font-size: 2.5rem;
  }

  .display-md {
    font-size: 1.875rem;
  }

  .section-header h2 {
    font-size: 2rem;
  }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}