:root {
  --bg: #f3f5f4;
  --ink: #17221f;
  --ink-soft: #4d5a56;
  --rule: #d5dbd8;
  --code-bg: #e9edeb;
  --green: #1f6f57;
  --violet: #5c4d9c;
  --add: #1f6f57;
  --del: #a3403a;
  --canvas-bg: #1a2320;
  --canvas-ink: #e8ecea;
  --canvas-soft: #a3aeaa;
  --canvas-p1: #e8ecea;
  --canvas-p2: #4fb08f;
  --canvas-p3: #9b8de0;
  --canvas-del: #e0766f;
  --measure: 58rem;
  --r-s: 4px;
  --r-m: 8px;
  --r-l: 12px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161c1a;
    --ink: #e8ecea;
    --ink-soft: #a3aeaa;
    --rule: #2c3531;
    --code-bg: #1f2724;
    --green: #4fb08f;
    --violet: #9b8de0;
    --add: #4fb08f;
    --del: #e0766f;
    --canvas-bg: #1f2724;
    --canvas-ink: #e8ecea;
    --canvas-soft: #a3aeaa;
    --canvas-p1: #e8ecea;
    --canvas-p2: #4fb08f;
    --canvas-p3: #9b8de0;
    --canvas-del: #e0766f;
  }
}
* { box-sizing: border-box; }
html { color-scheme: light dark; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Instrument Sans", system-ui, -apple-system, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.55;
  padding-inline: clamp(1rem, 4vw, 3rem);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration-color: var(--rule); text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--green); }
a:focus-visible, .button:focus-visible { outline: 2px solid var(--violet); outline-offset: 3px; }
code, pre {
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.9em;
}
code { background: var(--code-bg); padding: 0.12em 0.4em; border-radius: var(--r-s); font-size: 0.88em; }
pre {
  background: var(--code-bg);
  border: 1px solid var(--rule);
  padding: 1.1rem 1.35rem;
  border-radius: var(--r-m);
  overflow-x: auto;
  line-height: 1.6;
  margin: 1.1rem 0 1.25rem;
}
pre code { background: none; padding: 0; font-size: 0.85rem; }
.del { color: var(--del); }
.add { color: var(--add); }
.c { color: var(--ink-soft); }

.top {
  display: flex; justify-content: space-between; align-items: center;
  max-width: var(--measure); margin: 0 auto; padding-block: 1.4rem;
  gap: 1rem; flex-wrap: wrap;
}
.wordmark { display: inline-flex; align-items: center; gap: 0.5rem; font-weight: 600; font-size: 1.05rem; text-decoration: none; letter-spacing: -0.01em; }
.wordmark svg { flex: none; }
.top nav { display: flex; gap: 1.6rem; flex-wrap: wrap; font-size: 0.95rem; }
.top nav a { text-decoration: none; color: var(--ink-soft); }
.top nav a:hover { color: var(--ink); }

main { max-width: var(--measure); margin: 0 auto; }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: clamp(2rem, 4vw, 3.5rem);
  align-items: center;
  padding-block: clamp(2rem, 5vw, 4rem) clamp(2.5rem, 5vw, 4rem);
  border-bottom: 1px solid var(--rule);
}
h1 {
  font-size: clamp(2.4rem, 4.6vw, 3.4rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
  font-weight: 600;
  margin: 0 0 1.25rem;
  text-wrap: balance;
}
.lede { font-size: 1.15rem; line-height: 1.5; color: var(--ink-soft); margin: 0 0 1.75rem; }
.hero-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 1.25rem; }
.button {
  display: inline-block;
  padding: 0.65rem 1.2rem;
  border-radius: var(--r-m);
  background: var(--ink);
  color: var(--bg);
  text-decoration: none;
  font-weight: 500;
  border: 1px solid var(--ink);
}
.button:hover { background: var(--green); border-color: var(--green); }
.button.ghost { background: transparent; color: var(--ink); border-color: var(--rule); }
.button.ghost:hover { border-color: var(--ink); background: transparent; }
.meta { margin: 0; color: var(--ink-soft); font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 0.8rem; display: flex; gap: 1rem; }

.murmuration { margin: 0; min-width: 0; }
.murmuration canvas {
  display: block; width: 100%; aspect-ratio: 4 / 3; max-width: 100%;
  border-radius: var(--r-l); border: 1px solid var(--rule); background: var(--canvas-bg);
}
.murmuration figcaption { font-size: 0.9rem; line-height: 1.45; color: var(--ink-soft); margin-top: 0.75rem; }

section { padding-block: clamp(2.75rem, 5vw, 4.25rem); border-bottom: 1px solid var(--rule); }
section:last-of-type { border-bottom: 0; }
h2 { font-size: 1.9rem; letter-spacing: -0.022em; font-weight: 600; margin: 0 0 1.35rem; line-height: 1.15; }
h3 { font-size: 1rem; font-weight: 600; margin: 2rem 0 0.5rem; }
p { margin: 0 0 0.9rem; max-width: 44rem; text-wrap: pretty; }
.aside { color: var(--ink-soft); }

.how ol { padding-left: 1.5rem; margin: 0 0 1.25rem; }
.how li { margin-bottom: 0.9rem; max-width: 42.5rem; }
.how li::marker { color: var(--green); font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 0.9rem; }

.features dl {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.75rem 3rem; margin: 0.5rem 0 0;
}
.features dt { font-weight: 600; margin: 0; }
.features dd { margin: 0.3rem 0 0; color: var(--ink-soft); }
.scope { margin-top: 2.5rem; padding-top: 1.75rem; border-top: 1px solid var(--rule); }
.scope h3 { font-size: 1.2rem; letter-spacing: -0.01em; margin: 0 0 1.25rem; }

footer {
  max-width: var(--measure); margin: 0 auto; padding-block: 2rem 3rem;
  border-top: 1px solid var(--rule); color: var(--ink-soft); font-size: 0.9rem;
}
footer p { margin: 0 0 0.5rem; }
footer p a { margin-right: 1.25rem; }

@media (max-width: 52rem) {
  .hero { grid-template-columns: 1fr; }
  .features dl { grid-template-columns: 1fr; gap: 1.5rem; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}