:root {
  --paper: #fafafa; --ink: #0a0a0a; --soft: #6b6b6b; --rule: #e6e6e6; --signal: #ff4f1a; --ok: #16a34a;
  --mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --sans: "Geist", -apple-system, "Helvetica Neue", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root { --paper: #0a0a0a; --ink: #fafafa; --soft: #8a8a8a; --rule: #222; --ok: #4ade80; }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--paper); color: var(--ink); }
body { font: 16px/1.6 var(--sans); -webkit-font-smoothing: antialiased; padding: 28px 22px 40px; }
.wrap { max-width: 860px; margin: 0 auto; }
header.top { display: flex; justify-content: space-between; align-items: center; font: 12px/1 var(--mono); letter-spacing: .05em; text-transform: uppercase; color: var(--soft); }
header.top b { color: var(--ink); font-weight: 500; }
header.top nav a { margin-left: 18px; border: 0; color: var(--soft); }
header.top nav a:hover { color: var(--ink); }
a { color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--rule); }
a:hover { border-color: var(--ink); }
h1 { font: 600 clamp(42px, 8vw, 92px)/0.98 var(--sans); letter-spacing: -0.05em; margin: 15vh 0 24px; }
h1 span, h2 span { color: var(--soft); }
h2 { font: 600 clamp(28px, 4.4vw, 44px)/1.05 var(--sans); letter-spacing: -0.04em; margin: 0 0 18px; }
h3 { font: 600 17px/1.3 var(--sans); letter-spacing: -0.01em; margin: 0 0 6px; }
.lede { max-width: 520px; color: var(--soft); font-size: 18px; margin: 0 0 36px; }
.eyebrow { font: 11.5px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--soft); margin: 0 0 16px; }
section { padding: 88px 0 0; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 12px 18px; border: 1px solid var(--ink); font: 500 14px var(--sans); }
.btn.solid { background: var(--ink); color: var(--paper); }
.btn.solid:hover { opacity: .88; }
.note { font: 12px var(--mono); color: var(--soft); }
.cmd { display: flex; justify-content: space-between; gap: 12px; align-items: center; border: 1px solid var(--rule); padding: 14px 16px; font: 14px var(--mono); overflow-x: auto; white-space: nowrap; }
.cmd span::before { content: "$ "; color: var(--soft); }
.cmd button { font: 12px var(--mono); background: none; border: 1px solid var(--rule); color: var(--soft); padding: 4px 8px; cursor: pointer; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--ink); }
.grid > div { padding: 22px 22px 22px 0; border-bottom: 1px solid var(--rule); }
.grid > div + div { padding-left: 22px; border-left: 1px solid var(--rule); }
.grid p { margin: 0; color: var(--soft); font-size: 15px; }
.route { display: grid; grid-template-columns: auto 1fr auto 1fr auto; align-items: center; gap: 14px; font: 12px var(--mono); text-transform: uppercase; letter-spacing: .05em; margin: 8px 0 28px; }
.node { border: 1px solid var(--ink); padding: 7px 10px; }
.node.mid { background: var(--ink); color: var(--paper); }
.wire { position: relative; height: 1px; background: var(--rule); }
.wire i { position: absolute; top: -3px; width: 7px; height: 7px; background: var(--signal); animation: hop 2.6s cubic-bezier(.6,0,.4,1) infinite; }
.wire.back i { animation-delay: 1.3s; animation-direction: reverse; }
@keyframes hop { 0% { left: 0; opacity: 0 } 10% { opacity: 1 } 90% { opacity: 1 } 100% { left: calc(100% - 7px); opacity: 0 } }
dl { margin: 0; border-top: 1px solid var(--ink); font: 14px var(--mono); }
dl div { display: grid; grid-template-columns: 190px 1fr; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--rule); }
dt { color: var(--soft); text-transform: uppercase; letter-spacing: .05em; font-size: 11.5px; padding-top: 2px; }
dd { margin: 0; }
article { max-width: 680px; }
article h1 { font-size: clamp(36px, 6vw, 56px); margin-top: 10vh; }
article h2 { font-size: 22px; letter-spacing: -0.02em; margin: 40px 0 10px; }
article p, article li { color: var(--soft); }
article li { margin-bottom: 6px; }
article strong { color: var(--ink); font-weight: 500; }
footer.bottom { margin-top: 110px; padding-top: 18px; border-top: 1px solid var(--rule); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font: 12px var(--mono); color: var(--soft); }
footer.bottom a { color: var(--soft); border: 0; margin-left: 16px; }
footer.bottom a:hover { color: var(--ink); }
@media (max-width: 680px) {
  .grid { grid-template-columns: 1fr; }
  .grid > div + div { padding-left: 0; border-left: 0; }
  dl div { grid-template-columns: 1fr; gap: 2px; }
  .route { gap: 8px; font-size: 10.5px; }
  header.top nav a { margin-left: 12px; }
}
@media (prefers-reduced-motion: reduce) { .wire i { animation: none; left: 50%; } }