:root {
  color-scheme: dark;
  --bg: #05060b;
  --bg-accent: #0f111b;
  --surface: #111423;
  --text: #f4f7ff;
  --muted: #93a1c9;
  --green: #5af2af;
  --green-dark: #2bcf84;
  --border: rgba(255, 255, 255, 0.1);
  font-family: 'Space Grotesk', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(120% 120% at 10% 20%, rgba(90, 242, 175, 0.07), transparent 60%), var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.hero {
  padding: 2.5rem clamp(1.5rem, 4vw, 5rem) 4rem;
  background: linear-gradient(135deg, rgba(11, 23, 36, 0.95), rgba(7, 9, 15, 0.98));
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 3rem;
}

.logo {
  font-weight: 600;
  letter-spacing: 0.05em;
}

.nav-link {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.nav-link:hover {
  color: var(--green);
  border-color: var(--green);
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.5rem;
  align-items: center;
}

.tag {
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--green);
  font-size: 0.75rem;
  margin-bottom: 1rem;
}

.hero h1 {
  font-size: clamp(2.8rem, 5vw, 3.8rem);
  margin: 0 0 1rem;
}

.lead {
  color: var(--muted);
  font-size: 1.1rem;
  line-height: 1.7;
}

.waitlist {
  margin-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.waitlist input {
  flex: 1;
  min-width: 220px;
  padding: 0.9rem 1.1rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.waitlist button {
  padding: 0.9rem 1.8rem;
  border-radius: 999px;
  border: none;
  background: linear-gradient(120deg, var(--green), var(--green-dark));
  color: #05120b;
  font-weight: 600;
  cursor: pointer;
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.waitlist button:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 35px rgba(90, 242, 175, 0.25);
}

.subtext {
  margin-top: 0.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.hero-card {
  position: relative;
  padding: 2rem;
  border-radius: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  overflow: hidden;
}

.pulse {
  position: absolute;
  inset: -40% auto auto -40%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(90, 242, 175, 0.25), transparent 70%);
  animation: pulse 4s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.8); opacity: 0.7; }
  50% { transform: scale(1.2); opacity: 0.2; }
  100% { transform: scale(0.8); opacity: 0.7; }
}

.stat {
  position: relative;
  margin-bottom: 1.5rem;
}

.stat span {
  color: var(--muted);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
}

.stat strong {
  display: block;
  font-size: 2.2rem;
  margin-top: 0.4rem;
}

.green {
  color: var(--green);
}

.card-note {
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 2rem;
}

main {
  background: var(--bg-accent);
  padding: 4rem clamp(1.5rem, 5vw, 6rem);
}

.section {
  max-width: 1100px;
  margin: 0 auto 4rem;
}

.section h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin-bottom: 1rem;
}

.features .feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.features article {
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 1rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 999px;
  border: 1px solid var(--green);
  color: var(--green);
  margin-bottom: 1rem;
}

.testimonials .quote-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

blockquote {
  margin: 0;
  font-size: 1.1rem;
  line-height: 1.7;
  color: #e2e9ff;
}

figcaption {
  margin-top: 0.8rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer {
  text-align: center;
  padding: 2rem;
  color: var(--muted);
  background: #06070f;
  border-top: 1px solid var(--border);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  border: 0;
}

@media (max-width: 640px) {
  .nav {
    flex-direction: column;
    gap: 1rem;
  }
}