:root {
  --ink: #1b1f24;
  --muted: #5b6470;
  --paper: #fbfaf7;
  --rule: #e4e1da;
  --night: #10151c;
  --accent: #3fb0a6;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.wrap { max-width: 46rem; margin: 0 auto; padding: 0 1.25rem; }

.hero { background: var(--night); color: #e8ecef; padding: 4rem 0 3rem; }
.mark {
  font-family: var(--mono);
  color: var(--accent);
  letter-spacing: 0.08em;
  margin: 0 0 1rem;
}
h1 { font-size: 2.1rem; line-height: 1.2; margin: 0 0 1.25rem; font-weight: 650; }
.lede { color: #b9c2cb; font-size: 1.1rem; margin: 0 0 1.5rem; }
.stat { font-family: var(--mono); font-size: 0.95rem; color: #b9c2cb; margin: 0; }
.stat strong { color: var(--accent); font-size: 1.3rem; }

section { padding: 2.5rem 0 0.5rem; border-bottom: 1px solid var(--rule); }
h2 { font-size: 1.35rem; margin: 0 0 0.75rem; }
code { font-family: var(--mono); font-size: 0.9em; }

.apps { padding-left: 1.2rem; }
.apps li { margin: 0.3rem 0; }

.video {
  aspect-ratio: 16 / 9;
  width: 100%;
  border-radius: 6px;
  background: var(--night);
  margin: 0 0 2rem;
}
/* The demo is a phone screen, so portrait: its own shape, centred, never
   taller than the window. */
video.video {
  display: block;
  aspect-ratio: auto;
  width: auto;
  max-width: 100%;
  max-height: 80vh;
  margin: 0 auto 2rem;
  background: none;
}
.video.todo {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 2px dashed #3a4654;
  color: #8a96a3;
  font-family: var(--mono);
  text-align: center;
  padding: 1rem;
}
.video.todo b { color: var(--accent); font-size: 1.1rem; }

footer { color: var(--muted); font-size: 0.9rem; padding: 2rem 1.25rem 3rem; }

@media (max-width: 30rem) {
  h1 { font-size: 1.6rem; }
  .hero { padding: 2.5rem 0 2rem; }
}