:root {
  --accent: #3a90d6;
  --accent-strong: #1f6fb8;
  --fg: #1a1a1a;
  --fg-muted: #5a5a5a;
  --bg: #ffffff;
  --bg-soft: #f5f7fa;
  --border: #e3e7ec;
  --code-bg: #f0f2f5;
  --max-w: 980px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fg: #e8eaed;
    --fg-muted: #a5a9b2;
    --bg: #15171a;
    --bg-soft: #1d2024;
    --border: #2a2e34;
    --code-bg: #1a1d22;
    --accent: #58a6ff;
    --accent-strong: #79b8ff;
  }
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
code, pre, kbd, samp {
  font-family: ui-monospace, "SF Mono", Menlo, Monaco, Consolas, monospace;
  font-size: 0.92em;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-strong); text-decoration: underline; }

.hero {
  padding: 2.5rem 1.25rem 2rem;
  max-width: var(--max-w);
  margin: 0 auto;
}
.topnav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.brand {
  font-weight: 700;
  color: var(--fg);
  font-size: 1.05rem;
}
.links { display: flex; gap: 1.25rem; flex-wrap: wrap; }
.links a { color: var(--fg-muted); font-size: 0.95rem; }
.links a:hover { color: var(--accent); }

h1 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  line-height: 1.25;
  margin: 0 0 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}
h1 .muted {
  font-weight: 400;
  color: var(--fg-muted);
  font-size: 0.85em;
}
.lede {
  font-size: 1.05rem;
  color: var(--fg-muted);
  max-width: 720px;
  margin: 0 0 1.75rem;
}

.cta-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}
.cta {
  display: inline-block;
  padding: 0.55rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--fg);
  font-size: 0.95rem;
  background: var(--bg-soft);
}
.cta:hover { border-color: var(--accent); text-decoration: none; }
.cta.primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.cta.primary:hover { background: var(--accent-strong); color: #fff; }

.demo {
  margin: 1.5rem 0 0;
  padding: 0;
}
.demo img {
  width: 100%;
  max-width: 360px;
  border-radius: 10px;
  display: block;
  border: 1px solid var(--border);
}
.demo figcaption {
  font-size: 0.85rem;
  color: var(--fg-muted);
  margin-top: 0.6rem;
}

.stats {
  background: var(--bg-soft);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 1.25rem;
}
.stats ul {
  list-style: none;
  padding: 0;
  margin: 0 auto;
  max-width: var(--max-w);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem 1.5rem;
}
.stats li {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.stats strong {
  font-size: 1.5rem;
  color: var(--accent);
  font-weight: 700;
  line-height: 1.1;
}
.stats span {
  font-size: 0.85rem;
  color: var(--fg-muted);
  margin-top: 0.15rem;
}

.block {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 2.5rem 1.25rem;
}
.block h2 {
  font-size: 1.5rem;
  margin: 0 0 1rem;
  font-weight: 700;
  letter-spacing: -0.005em;
}
.block h3 {
  font-size: 1.1rem;
  margin: 1.5rem 0 0.5rem;
  font-weight: 600;
}
.block p { margin: 0 0 1rem; }
.muted { color: var(--fg-muted); font-size: 0.9rem; }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}
.card {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
}
.card h3 {
  margin-top: 0;
  font-size: 1.05rem;
  color: var(--accent);
}
.card ul, .card ol {
  padding-left: 1.25rem;
  margin: 0.5rem 0;
}
.card li { margin-bottom: 0.5rem; font-size: 0.95rem; }
.card code {
  background: var(--code-bg);
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
  font-size: 0.85em;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin: 1.25rem 0 2rem;
}
.gallery figure {
  margin: 0;
  text-align: center;
}
.gallery img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--border);
  display: block;
}
.gallery figcaption {
  font-size: 0.85rem;
  color: var(--fg-muted);
  margin-top: 0.4rem;
}

img.full {
  width: 100%;
  max-width: 100%;
  border-radius: 6px;
  border: 1px solid var(--border);
  display: block;
  margin: 0.75rem 0;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem;
  overflow-x: auto;
  font-size: 0.88rem;
  line-height: 1.5;
}
pre code { background: transparent; padding: 0; }
p code, li code {
  background: var(--code-bg);
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
  font-size: 0.88em;
}

.callout {
  background: var(--bg-soft);
  border-left: 3px solid var(--accent);
  border-radius: 6px;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0 1.75rem;
  font-size: 0.95rem;
  line-height: 1.55;
}
.callout strong { color: var(--accent); }
.callout em { font-style: italic; }

footer {
  border-top: 1px solid var(--border);
  padding: 2rem 1.25rem 3rem;
  max-width: var(--max-w);
  margin: 0 auto;
  color: var(--fg-muted);
  font-size: 0.9rem;
}
footer p { margin: 0 0 0.5rem; }

@media (max-width: 600px) {
  .hero { padding: 1.5rem 1rem 1.5rem; }
  .topnav { margin-bottom: 1.5rem; }
  .block { padding: 1.75rem 1rem; }
  .stats { padding: 1.25rem 1rem; }
  .stats strong { font-size: 1.25rem; }
}