:root {
  --color-primary: #2563EB;
  --color-primary-dark: #1D4ED8;
  --color-secondary: #3B82F6;
  --color-accent: #C2410C;
  --color-accent-dark: #9A3412;
  --color-bg: #F8FAFC;
  --color-fg: #1E293B;
  --color-card: #FFFFFF;
  --color-muted: #E9EFF8;
  --color-muted-fg: #475569;
  --color-border: #E2E8F0;
  --space-2: 8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --space-6: 48px;
  --space-7: 64px;
  --space-8: 96px;
  --radius: 14px;
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, Segoe UI, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-fg);
  background: var(--color-bg);
  line-height: 1.5;
  font-size: 16px;
}

.wrap {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: var(--space-2) var(--space-3);
  z-index: 100;
}
.skip-link:focus { left: var(--space-3); top: var(--space-3); }

a { color: inherit; }
h1, h2, h3 { line-height: 1.2; font-weight: 700; margin: 0 0 var(--space-3); }
p { margin: 0 0 var(--space-3); color: var(--color-muted-fg); }
code { font-family: 'SF Mono', Menlo, Consolas, monospace; font-size: 0.9em; background: var(--color-muted); padding: 0.1em 0.4em; border-radius: 4px; }

a:focus-visible,
button:focus-visible,
.btn:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform 150ms ease, background-color 150ms ease, border-color 150ms ease;
  min-height: 44px;
  padding: 0 var(--space-4);
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--color-accent); color: #fff; }
.btn-primary:hover { background: var(--color-accent-dark); }
.btn-ghost { background: transparent; border-color: var(--color-border); color: var(--color-fg); }
.btn-ghost:hover { border-color: var(--color-primary); }
.btn-sm { padding: 0 var(--space-3); min-height: 44px; font-size: 0.9rem; }
.btn-lg { padding: 0 var(--space-5); min-height: 52px; font-size: 1.05rem; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(248, 250, 252, 0.75);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: 72px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 800;
  font-size: 1.15rem;
  text-decoration: none;
  color: var(--color-fg);
}
.site-nav { display: flex; gap: var(--space-4); }
.site-nav a { text-decoration: none; font-weight: 500; color: var(--color-muted-fg); }
.site-nav a:hover { color: var(--color-fg); }

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  min-height: 640px;
  display: flex;
  align-items: center;
  background: radial-gradient(circle at 70% 20%, #DCE8FF 0%, var(--color-bg) 55%);
}
#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}
.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 680px;
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  letter-spacing: -0.02em;
}
.hero-sub { font-size: 1.15rem; max-width: 56ch; }
.hero-cta { display: flex; gap: var(--space-3); flex-wrap: wrap; margin-top: var(--space-5); }

/* Value props */
.value-props { padding: var(--space-7) 0; }
.value-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-5);
}
.value-item .icon {
  width: 40px;
  height: 40px;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

/* Section title */
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  text-align: center;
  max-width: 46ch;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--space-6);
}

/* Features */
.features { padding: var(--space-7) 0; background: var(--color-card); border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); }
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-4);
}
.feature-card {
  background: #FAFAFA;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-4);
}
.feature-card h3 { margin-bottom: var(--space-2); font-size: 1.05rem; }
.feature-card p { margin: 0; font-size: 0.95rem; }

/* How it works */
.how { padding: var(--space-7) 0; }
.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
}
.steps li { position: relative; padding-top: var(--space-6); }
.step-num {
  position: absolute;
  top: 0;
  left: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}
.steps h3 { font-size: 1rem; margin-bottom: 4px; }
.steps p { font-size: 0.92rem; margin: 0; }

/* Developers */
.developers { padding: var(--space-7) 0; background: var(--color-card); border-top: 1px solid var(--color-border); }
.dev-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  align-items: center;
}
.code-block {
  background: #0F172A;
  color: #E2E8F0;
  border-radius: var(--radius);
  padding: var(--space-4);
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.6;
  margin: 0;
}
.code-block code { background: none; padding: 0; color: inherit; }

/* CTA */
.cta-section {
  padding: var(--space-8) 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  text-align: center;
}
.cta-section h2 { color: #fff; }
.cta-section p { color: rgba(255,255,255,0.85); }
.cta-inner { max-width: 560px; margin: 0 auto; }

/* Footer */
.site-footer { padding: var(--space-6) 0; }
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.footer-inner .brand { display: inline-flex; align-items: center; gap: var(--space-2); font-weight: 700; }
.footer-inner nav { display: flex; gap: var(--space-4); }
.footer-inner nav a { text-decoration: none; color: var(--color-muted-fg); font-size: 0.9rem; }
.copyright { margin: 0; font-size: 0.85rem; color: var(--color-muted-fg); }

@media (max-width: 768px) {
  .site-nav { display: none; }
  .dev-grid { grid-template-columns: 1fr; }
  .hero { min-height: 560px; }
}