:root {
  --graphite: #111418;
  --panel: #191e23;
  --warm: #f2eee6;
  --muted: #a5adb0;
  --yellow: #f4c542;
  --petrol: #167d8d;
  --line: rgba(242, 238, 230, 0.14);
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--graphite);
  color: var(--warm);
  font: 17px/1.65 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
a { color: var(--yellow); text-underline-offset: 4px; }
a:hover { color: #ffe17b; }
.shell { width: min(1080px, calc(100% - 40px)); margin: 0 auto; }
header { border-bottom: 1px solid var(--line); }
nav { min-height: 84px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { color: var(--warm); font-weight: 800; letter-spacing: .13em; text-decoration: none; }
.brand::before { content: ""; display: inline-block; width: 28px; height: 4px; margin: 0 12px 4px 0; background: var(--yellow); }
.links { display: flex; flex-wrap: wrap; gap: 20px; font-size: 14px; }
.links a { color: var(--muted); text-decoration: none; }
.links a:hover { color: var(--warm); }
.hero { padding: 100px 0 72px; display: grid; grid-template-columns: 1.35fr .65fr; gap: 64px; align-items: end; }
.eyebrow { color: var(--yellow); font: 700 13px/1.4 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .12em; text-transform: uppercase; }
h1 { max-width: 850px; margin: 18px 0 22px; font-size: clamp(43px, 7vw, 78px); line-height: 1.03; letter-spacing: -.04em; }
.lead { max-width: 720px; color: #cbd0d1; font-size: clamp(19px, 2.3vw, 25px); }
.trace { position: relative; min-height: 210px; }
.trace::before { content: ""; position: absolute; left: 0; right: 0; top: 50%; height: 4px; background: linear-gradient(90deg, var(--yellow) 0 70%, transparent 70%); }
.node { position: absolute; top: calc(50% - 9px); width: 18px; height: 18px; border: 4px solid var(--yellow); border-radius: 50%; background: var(--graphite); }
.node:nth-child(1) { left: 4%; }.node:nth-child(2) { left: 36%; }.node:nth-child(3) { left: 67%; }.node:nth-child(4) { left: 91%; background: var(--yellow); }
section { padding: 70px 0; border-top: 1px solid var(--line); }
h2 { margin: 0 0 22px; font-size: clamp(28px, 4vw, 42px); line-height: 1.15; }
h3 { margin: 34px 0 10px; font-size: 22px; }
p, li { max-width: 820px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { min-height: 190px; padding: 28px; background: var(--panel); border: 1px solid var(--line); border-radius: 3px; }
.card strong { display: block; margin-bottom: 10px; color: var(--yellow); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; }
.notice { margin: 30px 0; padding: 22px 24px; border-left: 4px solid var(--petrol); background: rgba(22,125,141,.12); }
.meta { color: var(--muted); font-size: 14px; }
ul { padding-left: 24px; }
footer { padding: 38px 0 55px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
footer .shell { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; padding-top: 70px; gap: 15px; }
  .trace { min-height: 100px; }
  .grid { grid-template-columns: 1fr; }
  nav { align-items: flex-start; padding: 22px 0; flex-direction: column; }
}