:root {
  color-scheme: light dark;
  --page: light-dark(rgb(246 247 249), rgb(17 18 20));
  --surface: light-dark(rgb(255 255 255), rgb(24 24 24));
  --text: light-dark(rgb(25 27 30), rgb(247 247 247));
  --muted: light-dark(rgb(80 85 94), rgb(175 179 187));
  --border: light-dark(rgb(25 27 30 / 12%), rgb(255 255 255 / 13%));
  --accent: light-dark(rgb(16 115 214), rgb(131 195 255));
}

* {
  box-sizing: border-box;
}

html {
  background: var(--page);
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 0%, color-mix(in srgb, var(--accent) 11%, transparent), transparent 34rem),
    var(--page);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.shell {
  width: min(100%, 1060px);
  margin: 0 auto;
  padding: 48px 22px 32px;
}

.hero {
  max-width: 780px;
  margin-bottom: 28px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2.4rem, 7vw, 5rem);
  font-weight: 650;
  letter-spacing: -0.055em;
  line-height: 0.98;
}

.lede {
  max-width: 680px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2.2vw, 1.35rem);
  line-height: 1.5;
}

.sequence {
  margin: 15px 0 0;
  color: var(--text);
  font-size: 0.92rem;
  line-height: 1.55;
}

.lab-frame {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--surface);
  box-shadow: 0 24px 70px light-dark(rgb(25 27 30 / 9%), rgb(0 0 0 / 32%));
}

.lab-frame iframe {
  display: block;
  width: 100%;
  height: 740px;
  border: 0;
  background: var(--surface);
}

footer {
  max-width: 760px;
  margin: 22px auto 0;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.5;
  text-align: center;
}

footer a {
  color: var(--text);
  text-underline-offset: 0.18em;
}

footer a:hover {
  color: var(--accent);
}

@media (max-width: 640px) {
  .shell {
    padding: 28px 10px 24px;
  }

  .hero {
    padding: 0 8px;
    margin-bottom: 20px;
  }

  .sequence {
    font-size: 0.82rem;
  }

  .lab-frame {
    border-radius: 15px;
  }

  .lab-frame iframe {
    height: 1040px;
  }

  footer {
    padding: 0 8px;
  }
}