:root {
  color-scheme: dark;
  --bg: #071c13;
  --surface: #103524;
  --surface-raised: #17452f;
  --text: #e4f1e7;
  --muted: #aac2b0;
  --lime: #a8f331;
  --line: rgba(228, 241, 231, 0.14);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at 85% 0%, #174d32 0, var(--bg) 34rem);
  color: var(--text);
  line-height: 1.55;
}

a { color: var(--lime); font-weight: 700; }

.shell { width: min(1080px, calc(100% - 40px)); margin: 0 auto; }

header { border-bottom: 1px solid var(--line); background: rgba(7, 28, 19, 0.86); }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 72px; }
.brand { color: var(--text); font-size: 20px; font-weight: 850; text-decoration: none; }
.links { display: flex; gap: 18px; flex-wrap: wrap; }
.links a { color: var(--muted); text-decoration: none; font-size: 15px; }

.hero { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 48px; padding: 88px 0 68px; }
.eyebrow { margin: 0 0 14px; color: var(--lime); font-size: 14px; font-weight: 850; letter-spacing: 0.12em; text-transform: uppercase; }
.hero h1 { max-width: 680px; margin: 0 0 18px; font-size: clamp(48px, 7vw, 82px); line-height: 0.92; letter-spacing: -0.05em; }
.lead { max-width: 630px; margin: 0; color: var(--muted); font-size: 20px; }
.hero-icon { width: 156px; height: 156px; border-radius: 36px; box-shadow: 0 24px 60px rgba(0, 0, 0, 0.34); }

.button { display: inline-flex; align-items: center; min-height: 46px; margin-top: 30px; padding: 0 19px; border-radius: 10px; background: var(--lime); color: #071c13; text-decoration: none; }

.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; padding: 0 0 70px; }
.item { padding: 26px; border: 1px solid var(--line); border-radius: 18px; background: rgba(16, 53, 36, 0.92); }
.item h2, .panel h2, main h2 { margin: 0 0 10px; font-size: 22px; }
.item p, .panel p, main p, main li { margin: 0; color: var(--muted); }

.screens { padding: 14px 0 86px; }
.screens h2 { margin: 0 0 10px; font-size: clamp(34px, 5vw, 56px); line-height: 1; letter-spacing: -0.04em; }
.screens > p { max-width: 620px; margin: 0; color: var(--muted); }
.screen-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 30px; }
.screen-grid img { display: block; width: 100%; border: 1px solid var(--line); border-radius: 20px; box-shadow: 0 20px 48px rgba(0, 0, 0, 0.24); }

main { padding: 54px 0 70px; }
main h1 { margin: 0 0 18px; font-size: clamp(42px, 6vw, 62px); line-height: 1; letter-spacing: -0.04em; }
main section { margin-top: 38px; }
.panel { margin: 30px 0; padding: 28px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); }

footer { padding: 28px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }

@media (max-width: 720px) {
  .nav { align-items: flex-start; flex-direction: column; padding: 18px 0; }
  .hero { grid-template-columns: 1fr; padding: 56px 0; }
  .hero-icon { width: 112px; height: 112px; order: -1; }
  .features, .screen-grid { grid-template-columns: 1fr; }
}