:root {
  --bg: #0b1020;
  --panel: #121a30;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #a5b4fc;
  --line: #1e293b;
  --max: 64rem;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font:
    17px / 1.6 ui-sans-serif,
    system-ui,
    -apple-system,
    "Segoe UI",
    sans-serif;
}

a {
  color: var(--accent);
}
a:hover {
  color: #c7d2fe;
}

.top,
main,
footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.25rem;
  padding-bottom: 1.25rem;
}
.mark {
  display: inline-flex;
  gap: 0.5rem;
  align-items: center;
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
}
.top nav {
  display: flex;
  gap: 1.25rem;
  font-size: 0.95rem;
}
.top nav a {
  color: var(--muted);
  text-decoration: none;
}
.top nav a:hover {
  color: var(--text);
}

.hero {
  padding: 4rem 0 2.5rem;
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 1.1;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
  max-width: 18ch;
}
.lede {
  font-size: 1.2rem;
  color: var(--muted);
  max-width: 40rem;
}
.actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1.75rem;
}

.button {
  display: inline-block;
  padding: 0.65rem 1.1rem;
  border-radius: 0.5rem;
  background: var(--accent);
  color: #0b1020;
  font-weight: 600;
  text-decoration: none;
}
.button:hover {
  background: #c7d2fe;
  color: #0b1020;
}
.button.secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
}
.button.secondary:hover {
  border-color: var(--muted);
}

.demo-frame {
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: var(--panel);
  display: grid;
  place-items: center;
  color: var(--muted);
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 1.25rem;
  padding: 3.5rem 0;
}
.features article {
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  padding: 1.25rem;
  background: var(--panel);
}
.features h2 {
  font-size: 1.05rem;
  margin: 0 0 0.5rem;
}
.features p {
  margin: 0;
  color: var(--muted);
  font-size: 0.97rem;
}

.start,
.built {
  padding: 1.5rem 0 2.5rem;
}
.start h2,
.built h2 {
  margin-top: 0;
}
pre {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  padding: 1rem 1.25rem;
  overflow-x: auto;
  font-size: 0.92rem;
}
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}
p code {
  background: var(--panel);
  padding: 0.1rem 0.35rem;
  border-radius: 0.3rem;
  font-size: 0.9em;
}

footer {
  border-top: 1px solid var(--line);
  padding-top: 1.5rem;
  padding-bottom: 2.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.notfound {
  padding: 8rem 1.5rem;
  text-align: center;
}

.proof {
  margin-top: 1.25rem;
  color: var(--muted);
  font-size: 0.9rem;
  letter-spacing: 0.01em;
}

.problem {
  padding: 3.5rem 0 0;
  max-width: 44rem;
}
.problem h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  line-height: 1.15;
  margin: 0 0 1rem;
  letter-spacing: -0.01em;
}
.problem p {
  color: var(--muted);
  font-size: 1.08rem;
}
.problem p:last-child {
  color: var(--text);
}

.steps {
  padding: 1rem 0 2.5rem;
}
.steps h2,
.limits h2 {
  margin-top: 0;
}
.steps ol {
  padding-left: 1.25rem;
  display: grid;
  gap: 0.6rem;
  max-width: 44rem;
}
.steps li {
  color: var(--muted);
}
.steps strong {
  color: var(--text);
}

.limits {
  padding: 0 0 2.5rem;
  max-width: 44rem;
}
.limits ul {
  padding-left: 1.25rem;
  color: var(--muted);
  display: grid;
  gap: 0.4rem;
}