/* Design tokens */
:root {
  --bg: #0b0f0e;
  --text: #eaf5ef;
  --muted: #cde7d6;
  --primary: #13a86b;
  --primary-2: #0f766e;
  --accent: #84cc16;
  --card: #101513;
  --border: #1d2a24;
  --shadow: 0 10px 30px rgba(19, 168, 107, 0.2);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: radial-gradient(1200px 600px at 80% -20%, rgba(19,168,107,0.12), transparent 60%),
              radial-gradient(800px 400px at 20% -10%, rgba(132,204,22,0.1), transparent 60%),
              #07110d;
}

.container { width: 100%; max-width: 1100px; margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 10; backdrop-filter: saturate(1.2) blur(8px); background: rgba(7,17,13,0.7); border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; color: var(--text); font-weight: 700; letter-spacing: 0.5px; }
.brand-logo { width: 28px; height: 28px; }
.nav a { color: var(--muted); text-decoration: none; margin-left: 20px; font-weight: 500; }
.nav a:hover, .nav .cta-link { color: var(--text); }

/* Hero */
.hero { position: relative; padding: 80px 0 40px; }
.hero-bg {
  position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(700px 300px at 50% 0%, rgba(19,168,107,0.25), transparent 70%),
              radial-gradient(400px 200px at 20% 20%, rgba(132,204,22,0.20), transparent 70%);
}
.hero-inner { position: relative; }
.hero h1 { font-size: clamp(28px, 5vw, 44px); line-height: 1.15; margin: 0 0 12px; }
.subtitle { color: var(--muted); font-size: 16px; margin: 0 0 24px; }
.actions { display: flex; gap: 12px; margin: 20px 0 30px; }
.btn { display: inline-flex; align-items: center; justify-content: center; height: 40px; padding: 0 18px; border-radius: 10px; border: 1px solid var(--border); text-decoration: none; font-weight: 600; }
.btn.primary { background: linear-gradient(135deg, var(--primary), var(--primary-2)); color: #fff; box-shadow: var(--shadow); }
.btn.ghost { background: transparent; color: var(--text); }
.btn:hover { transform: translateY(-1px); transition: .2s ease; }
.hero-highlights { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.highlight { background: rgba(16,21,19,0.6); border: 1px solid var(--border); padding: 12px 14px; border-radius: 12px; color: var(--muted); display: flex; align-items: center; gap: 8px; }
.icon { font-size: 18px; }

/* Features */
.features { padding: 40px 0 20px; }
.features h2, .science h2, .testimonials h2, .cta h2 { font-size: 24px; margin: 0 0 18px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 18px; box-shadow: 0 1px 0 rgba(255,255,255,0.03) inset; }
.card-icon { font-size: 22px; margin-bottom: 6px; }
.card h3 { margin: 6px 0 8px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); }

/* Science */
.science { padding: 24px 0 8px; }
.science-content { background: rgba(16,21,19,0.6); border: 1px solid var(--border); border-radius: 14px; padding: 18px; }
.bullets { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; padding-left: 18px; }
.bullets li { color: var(--muted); }

/* Testimonials */
.testimonials { padding: 24px 0 8px; }
.quote { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 16px; }
.quote p { margin: 0 0 8px; }
.quote cite { color: var(--muted); font-style: normal; }

/* CTA */
.cta { padding: 24px 0 40px; }
.cta-inner { background: linear-gradient(135deg, rgba(19,168,107,0.25), rgba(132,204,22,0.15)); border: 1px solid var(--border); border-radius: 18px; padding: 24px; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); padding: 24px 0; background: rgba(7,17,13,0.6); }
.footer-inner { display: grid; grid-template-columns: 1fr auto auto; gap: 12px; align-items: center; }
.footer-links a { color: var(--muted); text-decoration: none; margin-right: 16px; }
.footer-links a:hover { color: var(--text); }
.legal { color: var(--muted); }
.icp { color: var(--muted); font-size: 12px; margin-top: 4px; }
.icp a { color: var(--muted); text-decoration: none; }
.icp a:hover { color: var(--text); }
.icp .divider { margin: 0 8px; opacity: 0.5; }

/* Responsive */
@media (max-width: 900px) {
  .grid { grid-template-columns: 1fr 1fr; }
  .bullets { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .header-inner { height: auto; padding: 12px 0; flex-direction: column; gap: 10px; }
  .nav a { margin: 0 10px; }
  .hero { padding: 60px 0 30px; }
  .hero-highlights { grid-template-columns: 1fr; }
  .grid { grid-template-columns: 1fr; }
  .bullets { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; text-align: center; }
}