:root {
  color-scheme: dark;
  --bg: #07111f;
  --panel: rgba(255, 255, 255, 0.055);
  --border: rgba(255, 255, 255, 0.12);
  --text: #f6f9ff;
  --muted: #9eabc0;
  --blue: #24b6ff;
  --cyan: #61e8ff;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 78% 20%, rgba(19, 120, 255, 0.2), transparent 30rem),
    radial-gradient(circle at 15% 55%, rgba(0, 229, 255, 0.08), transparent 28rem),
    var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

main {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

nav {
  height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
}

.brand {
  text-decoration: none;
  font-size: 19px;
  font-weight: 730;
  letter-spacing: -0.03em;
}

.nav-links { display: flex; gap: 28px; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: 14px; }
.nav-links a:hover { color: var(--text); }

.hero {
  min-height: 690px;
  display: grid;
  grid-template-columns: 1.14fr 0.86fr;
  align-items: center;
  gap: 72px;
  padding: 72px 0 96px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(60px, 8vw, 108px);
  line-height: 0.89;
  letter-spacing: -0.075em;
  font-weight: 760;
}

.lead {
  max-width: 680px;
  margin: 30px 0 0;
  color: #bcc7d9;
  font-size: clamp(18px, 2vw, 23px);
  line-height: 1.48;
  letter-spacing: -0.018em;
}

.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }

.button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  padding: 0 23px;
  border: 1px solid var(--border);
  border-radius: 15px;
  text-decoration: none;
  font-size: 15px;
  font-weight: 670;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.button:hover { transform: translateY(-2px); }
.button.primary { color: #03121f; background: linear-gradient(135deg, var(--cyan), var(--blue)); border-color: transparent; }
.button.secondary { background: rgba(255, 255, 255, 0.045); }
.button.secondary:hover { border-color: rgba(255, 255, 255, 0.25); }
.requirement { margin: 16px 0 0; color: #718097; font-size: 13px; }

.icon-stage { position: relative; display: grid; place-items: center; min-height: 460px; }
.icon-stage img { position: relative; width: min(100%, 430px); border-radius: 22.5%; filter: drop-shadow(0 30px 45px rgba(0, 0, 0, 0.42)); }
.glow { position: absolute; width: 75%; aspect-ratio: 1; border-radius: 50%; background: #048dff; filter: blur(90px); opacity: 0.28; }

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: var(--border);
}

.features article { min-height: 250px; padding: 34px; background: rgba(7, 17, 31, 0.94); }
.features span { color: var(--cyan); font: 700 12px ui-monospace, SFMono-Regular, Menlo, monospace; }
.features h2 { margin: 42px 0 12px; font-size: 23px; letter-spacing: -0.035em; }
.features p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.55; }

.preview-warning {
  margin: 28px 0 0;
  padding: 30px 34px;
  border: 1px solid rgba(255, 190, 72, 0.24);
  border-radius: 22px;
  background: rgba(255, 178, 51, 0.055);
}

.preview-warning strong { color: #ffd38a; font-size: 16px; }
.preview-warning p { max-width: 880px; margin: 10px 0 14px; color: #b9ad99; line-height: 1.55; }
.preview-warning a { color: #ffd38a; font-size: 14px; }

footer {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  margin-top: 80px;
  padding: 32px 0 50px;
  border-top: 1px solid var(--border);
  color: #718097;
  font-size: 13px;
  line-height: 1.5;
}

footer p { max-width: 760px; margin: 0; }

@media (max-width: 820px) {
  main { width: min(100% - 28px, 680px); }
  .hero { grid-template-columns: 1fr; gap: 24px; padding-top: 58px; }
  .icon-stage { min-height: 340px; order: -1; }
  .icon-stage img { width: min(72vw, 330px); }
  .features { grid-template-columns: 1fr; }
  .features article { min-height: 210px; }
  footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; }
}