:root {
  --bg: #101612;
  --fg: #e8f3ea;
  --muted: #9bb3a3;
  --line: #2a3a30;
  --accent: #96e6b0;
  --paper: #17201a;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: radial-gradient(circle at 12% 0%, #1a2a1e 0, var(--bg) 46%);
  color: var(--fg);
  font: 18px/1.55 "IBM Plex Sans", "Iowan Old Style", Georgia, serif;
  min-height: 100vh;
}

.skip {
  position: absolute;
  left: -999px;
  top: 0;
}
.skip:focus { left: 12px; top: 12px; background: var(--paper); padding: 8px 12px; }

.mast {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 20px 6vw;
  border-bottom: 1px solid var(--line);
}
.wordmark {
  color: var(--accent);
  text-decoration: none;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  letter-spacing: 0.04em;
  font-weight: 600;
}
nav { display: flex; gap: 18px; flex-wrap: wrap; }
nav a { color: var(--muted); text-decoration: none; font-size: 0.92rem; }
nav a:hover { color: var(--fg); }

.hero, .grid, .run, footer { padding: 56px 6vw; }
.kicker {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.72rem;
  color: var(--accent);
  margin: 0 0 16px;
}
h1 {
  font-size: clamp(2rem, 5vw, 3.6rem);
  line-height: 1.05;
  max-width: 18ch;
  margin: 0;
}
.lede { max-width: 62ch; color: var(--muted); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.btn {
  display: inline-block;
  padding: 12px 16px;
  border: 1px solid var(--line);
  color: var(--fg);
  text-decoration: none;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.82rem;
}
.btn-primary { background: var(--accent); color: #102016; border-color: var(--accent); }

.grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  border-top: 1px solid var(--line);
}
.grid article {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 20px;
}
h2 { margin: 0 0 10px; font-size: 1.2rem; }
.grid p, .run p { color: var(--muted); margin: 0; }

.run { border-top: 1px solid var(--line); }
pre {
  background: #0c120e;
  border: 1px solid var(--line);
  padding: 16px;
  overflow-x: auto;
  color: var(--accent);
  font-size: 0.92rem;
}
.note { margin-top: 16px; font-size: 0.95rem; }
code { font-family: "IBM Plex Mono", ui-monospace, monospace; }

footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 430px) {
  .mast { align-items: flex-start; flex-direction: column; }
  .hero, .grid, .run, footer { padding: 36px 20px; }
}