/* Landing page for the bridge: instructions only, same instrument-panel language. */
:root {
  --panel-deep: #0c171b;
  --panel: #122127;
  --rule: #26454e;
  --rule-soft: #1c383f;
  --ink: #e9e5d9;
  --ink-dim: #8ea3a9;
  --ink-faint: #5f767d;
  --live: #4fbfa0;
  --mono: "JetBrains Mono", "IBM Plex Mono", "DejaVu Sans Mono", ui-monospace, Menlo, monospace;
  --sans: "Inter", "Segoe UI", system-ui, -apple-system, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background:
    radial-gradient(900px 400px at 50% -10%, rgba(79, 191, 160, 0.07), transparent 70%),
    var(--panel-deep);
  color: var(--ink);
  font: 15px/1.6 var(--sans);
}

.wrap { max-width: 720px; margin: 0 auto; padding: 56px 20px 70px; }

.legend {
  font: 600 10px/1.2 var(--mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

h1 {
  margin: 12px 0 14px;
  font: 700 30px/1.15 var(--sans);
  letter-spacing: -0.02em;
}

.lede { margin: 0; color: var(--ink-dim); font-size: 15.5px; }

header { padding-bottom: 30px; border-bottom: 1px solid var(--rule); margin-bottom: 8px; }

.step {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 18px;
  padding: 24px 0;
  border-bottom: 1px solid var(--rule-soft);
}

.step p { margin: 0 0 10px; color: var(--ink-dim); }
.step__n { padding-top: 3px; color: var(--live); }

pre {
  margin: 0;
  padding: 12px 14px;
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: 3px;
  overflow-x: auto;
}

code { font: 13px/1.5 var(--mono); color: var(--ink); }

.aside { font-size: 13px; color: var(--ink-faint); margin-top: 10px; }
a { color: var(--live); }

footer { padding-top: 22px; }

@media (max-width: 560px) {
  .step { grid-template-columns: 1fr; gap: 8px; }
  h1 { font-size: 25px; }
}