:root {
  --color-primary: #4F46E5;
  --color-primary-dark: #312E81;
  --color-accent: #10B981;
  --color-bg: #F8FAFC;
  --color-surface: #FFFFFF;
  --color-text: #0F172A;
  --color-text-muted: #475569;
  --color-border: #E2E8F0;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 10px 30px rgba(79, 70, 229, 0.08);
  --max-width: 1080px;
  --max-width-prose: 760px;
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Inter",
    "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--color-primary-dark);
}

/* Layout */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.container-prose {
  width: 100%;
  max-width: var(--max-width-prose);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  background: rgba(248, 250, 252, 0.75);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17px;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.logo:hover {
  color: var(--color-text);
}

.logo__mark {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 14px;
  box-shadow: var(--shadow-md);
}

.site-nav {
  display: flex;
  gap: 24px;
  font-size: 14px;
  color: var(--color-text-muted);
}

.site-nav a {
  color: var(--color-text-muted);
}

.site-nav a:hover {
  color: var(--color-text);
}

/* Hero (landing) */
.hero {
  position: relative;
  padding: 96px 0 72px;
  overflow: hidden;
  text-align: center;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(60% 60% at 50% 0%, rgba(79, 70, 229, 0.12), transparent 70%),
    radial-gradient(40% 40% at 80% 20%, rgba(16, 185, 129, 0.10), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero > * {
  position: relative;
  z-index: 1;
}

.eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(79, 70, 229, 0.08);
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(36px, 6vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.03em;
  font-weight: 700;
  margin: 0 0 20px;
  background: linear-gradient(180deg, var(--color-text) 0%, var(--color-primary-dark) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p.lead {
  font-size: clamp(16px, 1.6vw, 19px);
  color: var(--color-text-muted);
  max-width: 640px;
  margin: 0 auto 32px;
}

.cta-row {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 10px 24px rgba(79, 70, 229, 0.28);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  color: var(--color-text);
  border-color: #cbd5e1;
}

/* Features */
.features {
  padding: 64px 0 32px;
}

.section-title {
  text-align: center;
  font-size: clamp(24px, 3vw, 32px);
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-muted);
  margin: 0 0 40px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.feature-card__icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(79, 70, 229, 0.1);
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 14px;
}

.feature-card h3 {
  margin: 0 0 6px;
  font-size: 17px;
  letter-spacing: -0.01em;
}

.feature-card p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 15px;
}

/* CTA section */
.cta-section {
  margin: 72px 0;
  padding: 56px 32px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  text-align: center;
  box-shadow: var(--shadow-md);
}

.cta-section h2 {
  font-size: clamp(24px, 3vw, 32px);
  margin: 0 0 10px;
  letter-spacing: -0.02em;
}

.cta-section p {
  margin: 0 auto 28px;
  max-width: 520px;
  color: rgba(255, 255, 255, 0.85);
}

.cta-section a:not(.btn) {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.cta-section a:not(.btn):hover {
  color: rgba(255, 255, 255, 0.92);
}

.legal .cta-section {
  margin: 40px 0 48px;
  text-align: center;
}

.cta-section .btn-primary {
  background: #fff;
  color: var(--color-primary-dark);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.15);
}

.cta-section .btn-primary:hover {
  background: #f1f5f9;
  color: var(--color-primary-dark);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 32px 0 48px;
  color: var(--color-text-muted);
  font-size: 14px;
}

.site-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  color: var(--color-text-muted);
}

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

/* Legal pages */
.legal {
  padding: 56px 0 80px;
}

.legal h1 {
  font-size: clamp(30px, 4vw, 44px);
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}

.legal .updated {
  color: var(--color-text-muted);
  margin: 0 0 32px;
  font-size: 14px;
}

.legal h2 {
  font-size: 22px;
  letter-spacing: -0.01em;
  margin: 40px 0 12px;
  padding-top: 8px;
}

.legal h3 {
  font-size: 17px;
  margin: 24px 0 8px;
}

.legal p,
.legal li {
  color: #1e293b;
}

.legal ul,
.legal ol {
  padding-left: 22px;
}

.legal li {
  margin-bottom: 6px;
}

.legal hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 40px 0;
}

.legal table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0 8px;
  font-size: 15px;
}

.legal th,
.legal td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-border);
}

.legal th {
  background: rgba(79, 70, 229, 0.04);
  font-weight: 600;
}

.legal code,
.legal strong {
  color: var(--color-text);
}

.legal blockquote {
  border-left: 3px solid var(--color-accent);
  margin: 16px 0;
  padding: 8px 16px;
  background: rgba(16, 185, 129, 0.06);
  color: var(--color-text);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* Responsive */
@media (max-width: 640px) {
  .hero {
    padding: 64px 0 48px;
  }
  .features {
    padding: 40px 0 16px;
  }
  .cta-section {
    margin: 48px 0;
    padding: 40px 20px;
  }
  .site-nav {
    gap: 16px;
  }
}