:root {
  --color-primary-blue-900: #0B1F3A;
  --color-secondary-teal-600: #0D9488;
  --color-surface-white: #FFFFFF;
  --color-surface-gray-50: #F8FAFC;
  --color-text-primary: #0F172A;
  --color-text-secondary: #475569;
  --color-border: #E2E8F0;
  --color-error: #B91C1C;
  --color-error-bg: #B91C1C1A;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --type-size-sm: 14px;
  --type-size-md: 16px;
  --type-size-lg: 24px;
  --elevation-md: 0 4px 12px rgba(11,31,58,0.10);
  --motion-fast: 150ms;
  --motion-normal: 300ms;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: var(--type-size-md);
  line-height: 1.5;
  color: var(--color-text-primary);
  background: var(--color-surface-gray-50);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-primary-blue-900);
  text-decoration: none;
  transition: color var(--motion-fast);
}

a:hover {
  color: var(--color-secondary-teal-600);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

@media (max-width: 640px) {
  .container { padding: 0 var(--space-md); }
}

.nav {
  background: var(--color-surface-white);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-md) 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.brand {
  font-weight: 700;
  font-size: var(--type-size-lg);
  color: var(--color-primary-blue-900);
  letter-spacing: -0.02em;
}

.brand-accent {
  color: var(--color-secondary-teal-600);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  list-style: none;
}

@media (max-width: 640px) {
  .nav-links { display: none; }
}

.nav-links a {
  font-weight: 500;
  color: var(--color-text-secondary);
  font-size: var(--type-size-sm);
}

.nav-links a:hover {
  color: var(--color-primary-blue-900);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 var(--space-md);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: var(--type-size-md);
  cursor: pointer;
  transition: all var(--motion-fast);
  border: 1px solid transparent;
  font-family: inherit;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary-blue-900);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--color-primary-blue-900);
  color: var(--color-surface-white);
}

.btn-primary:hover {
  background: #0a1a30;
  color: var(--color-surface-white);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-secondary {
  background: var(--color-surface-white);
  color: var(--color-primary-blue-900);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-primary-blue-900);
  color: var(--color-primary-blue-900);
}

.btn-accent {
  background: var(--color-secondary-teal-600);
  color: var(--color-surface-white);
}

.btn-accent:hover {
  background: #0b8579;
  color: var(--color-surface-white);
}

.btn-block { width: 100%; }

.hero {
  padding: var(--space-xl) 0;
  background: var(--color-surface-white);
}

@media (min-width: 1024px) {
  .hero { padding: 80px 0; }
}

.hero-grid {
  display: grid;
  gap: var(--space-xl);
  align-items: center;
}

@media (min-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1.1fr 1fr;
    gap: 64px;
  }
}

.eyebrow {
  display: inline-block;
  font-size: var(--type-size-sm);
  font-weight: 600;
  color: var(--color-secondary-teal-600);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-md);
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.15;
  font-weight: 700;
  color: var(--color-primary-blue-900);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

.hero-sub {
  font-size: var(--type-size-lg);
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin-bottom: var(--space-lg);
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.hero-card {
  background: var(--color-surface-gray-50);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--elevation-md);
}

.hero-card h3 {
  font-size: var(--type-size-lg);
  font-weight: 600;
  color: var(--color-primary-blue-900);
  margin-bottom: var(--space-md);
}

.feature-list {
  list-style: none;
  display: grid;
  gap: var(--space-sm);
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: var(--type-size-sm);
  color: var(--color-text-secondary);
}

.check-icon {
  color: var(--color-secondary-teal-600);
  font-weight: 700;
  flex-shrink: 0;
}

.section {
  padding: var(--space-xl) 0;
}

@media (min-width: 1024px) {
  .section { padding: 64px 0; }
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--color-primary-blue-900);
  letter-spacing: -0.01em;
  margin-bottom: var(--space-sm);
}

.section-sub {
  font-size: var(--type-size-md);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin-bottom: var(--space-lg);
}

.grid {
  display: grid;
  gap: var(--space-md);
}

@media (min-width: 640px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
}

.card {
  background: var(--color-surface-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
}

.card-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-blue-900);
  color: var(--color-surface-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--type-size-md);
  margin-bottom: var(--space-md);
}

.card h3 {
  font-size: var(--type-size-md);
  font-weight: 600;
  color: var(--color-primary-blue-900);
  margin-bottom: var(--space-xs);
}

.card p {
  font-size: var(--type-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.pricing-card {
  background: var(--color-surface-white);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
}

.pricing-card.featured {
  border-color: var(--color-secondary-teal-600);
  box-shadow: var(--elevation-md);
}

.pricing-badge {
  display: inline-block;
  background: var(--color-secondary-teal-600);
  color: var(--color-surface-white);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: var(--space-md);
  align-self: flex-start;
}

.pricing-name {
  font-size: var(--type-size-lg);
  font-weight: 600;
  color: var(--color-primary-blue-900);
  margin-bottom: var(--space-xs);
}

.pricing-price {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary-blue-900);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-xs);
}

.pricing-note {
  font-size: var(--type-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
}

.pricing-features {
  list-style: none;
  display: grid;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  flex: 1;
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: var(--type-size-sm);
  color: var(--color-text-secondary);
}

.legal-page {
  background: var(--color-surface-white);
  padding: var(--space-xl) 0;
  min-height: calc(100vh - 80px);
}

.legal-page h1 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  color: var(--color-primary-blue-900);
  margin-bottom: var(--space-sm);
}

.legal-date {
  font-size: var(--type-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
}

.legal-page h2 {
  font-size: var(--type-size-lg);
  font-weight: 600;
  color: var(--color-primary-blue-900);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
}

.legal-page p {
  font-size: var(--type-size-md);
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.legal-page ul {
  list-style: disc;
  padding-left: var(--space-lg);
  margin-bottom: var(--space-md);
}

.legal-page li {
  font-size: var(--type-size-md);
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-xs);
}

.footer {
  background: var(--color-primary-blue-900);
  color: var(--color-surface-white);
  padding: var(--space-lg) 0;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
}

.footer-brand {
  font-weight: 700;
  font-size: var(--type-size-md);
}

.footer-brand .accent { color: var(--color-secondary-teal-600); }

.footer-links {
  display: flex;
  gap: var(--space-md);
  list-style: none;
  flex-wrap: wrap;
}

.footer-links a {
  color: #94a3b8;
  font-size: var(--type-size-sm);
}

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

.footer-copy {
  font-size: var(--type-size-sm);
  color: #64748b;
}

.auth-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  background: var(--color-surface-gray-50);
}

.auth-card {
  width: 100%;
  max-width: 440px;
  background: var(--color-surface-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--elevation-md);
  padding: var(--space-xl);
}

.auth-brand {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.auth-brand .brand {
  font-size: 1.75rem;
}

.auth-card h1 {
  font-size: var(--type-size-lg);
  font-weight: 600;
  color: var(--color-primary-blue-900);
  margin-bottom: var(--space-md);
  text-align: center;
}

.field {
  margin-bottom: var(--space-md);
}

.field label {
  display: block;
  font-size: var(--type-size-sm);
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}

.field input {
  width: 100%;
  padding: 12px var(--space-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--type-size-md);
  font-family: inherit;
  color: var(--color-text-primary);
  background: var(--color-surface-white);
  min-height: 48px;
  transition: border-color var(--motion-fast);
}

.field input:focus {
  outline: none;
  border-color: var(--color-primary-blue-900);
  box-shadow: 0 0 0 3px rgba(11, 31, 58, 0.1);
}

.field input:disabled {
  background: var(--color-surface-gray-50);
  cursor: not-allowed;
}

.helper {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-top: 4px;
}

.auth-error {
  background: var(--color-error-bg);
  color: var(--color-error);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-md);
  font-size: var(--type-size-sm);
  line-height: 1.4;
}

.auth-footer {
  text-align: center;
  margin-top: var(--space-md);
  font-size: var(--type-size-sm);
  color: var(--color-text-secondary);
}

.auth-footer a {
  color: var(--color-primary-blue-900);
  font-weight: 500;
}