:root {
  --bg: #0a0d12;
  --bg-alt: #0f141b;
  --surface: #131a23;
  --border: #243042;
  --text: #e8eef6;
  --muted: #93a6bd;
  --accent: #7ecbff;
  --accent-ink: #061421;
  --maxw: 820px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 18px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 14px 24px;
  background: rgba(10, 13, 18, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; letter-spacing: 0.2px; color: var(--text); }
.brand:hover { text-decoration: none; }
.site-nav { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.site-nav a { color: var(--muted); font-size: 15px; }
.site-nav a:hover { color: var(--text); text-decoration: none; }
.nav-cta {
  background: var(--accent);
  color: var(--accent-ink) !important;
  padding: 7px 13px;
  border-radius: 9px;
  font-weight: 600;
}

/* Layout */
main { display: block; }
.hero, .block {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 72px 24px;
}
.block.alt { background: var(--bg-alt); }
.block.alt { max-width: none; }
.block.alt > * { max-width: var(--maxw); margin-left: auto; margin-right: auto; }

/* Hero */
.hero { padding-top: 96px; padding-bottom: 88px; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 3px;
  font-size: 13px;
  color: var(--accent);
  margin: 0 0 14px;
}
.hero h1 {
  font-size: clamp(34px, 6vw, 56px);
  line-height: 1.08;
  margin: 0 0 20px;
}
.lede { font-size: 20px; color: var(--muted); margin: 0 0 28px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* Typography */
h2 {
  font-size: clamp(26px, 4vw, 36px);
  line-height: 1.15;
  margin: 0 0 18px;
}
p { margin: 0 0 18px; }
em { color: var(--text); font-style: italic; }
.foundation {
  border-left: 3px solid var(--accent);
  padding-left: 16px;
  color: var(--text);
  font-size: 17px;
}
.feature-list { padding-left: 20px; margin: 0 0 18px; }
.feature-list li { margin-bottom: 10px; color: var(--muted); }
.feature-list strong { color: var(--text); }

/* Buttons */
.btn {
  display: inline-block;
  padding: 11px 18px;
  border-radius: 11px;
  font-weight: 600;
  font-size: 16px;
  border: 1px solid transparent;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { filter: brightness(1.06); }
.btn-ghost { background: transparent; color: var(--accent); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--accent); }
.btn-lg { padding: 14px 24px; font-size: 17px; }

/* CTA */
.block.cta {
  text-align: center;
  background: linear-gradient(180deg, var(--bg-alt), var(--bg));
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.cta-actions { margin: 22px 0 16px; }
.muted { color: var(--muted); font-size: 15px; }

/* Footer */
.site-footer {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 40px 24px 64px;
  color: var(--muted);
  font-size: 14px;
}
.site-footer p { margin: 0 0 8px; }

@media (max-width: 600px) {
  .site-nav { gap: 12px; font-size: 14px; }
  .hero, .block { padding: 52px 20px; }
}