/* Spyderworks site: Direction A "Shop Drawing" with the copper accent (ruled 2026-10-10). */
:root {
  --paper: #F2F5F4;
  --sheet: #FFFFFF;
  --ink: #15202B;
  --muted: #56636D;
  --line: #C8D0D3;
  --signal: #B8692E;
  --signal-ink: #8A4A1C;
  --signal-wash: #F6E8DD;
  --display: "IBM Plex Sans Condensed", "Arial Narrow", sans-serif;
  --body: "IBM Plex Sans", system-ui, -apple-system, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0E151B;
    --sheet: #141E26;
    --ink: #E4EBEE;
    --muted: #93A2AC;
    --line: #2A3742;
    --signal: #D9925A;
    --signal-ink: #E8B48A;
    --signal-wash: #2B1E15;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 1rem/1.65 var(--body); }
a { color: var(--signal-ink); text-underline-offset: 3px; }
a:hover { color: var(--signal); }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 clamp(16px, 4vw, 48px); }

.nav { border-bottom: 1px solid var(--line); background: var(--sheet); }
.nav .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 16px; padding-bottom: 16px; flex-wrap: wrap; }
.lockup { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; }
.lockup span { font: 700 1rem/1 var(--display); letter-spacing: .14em; }
.nav ul { display: flex; gap: 20px; list-style: none; margin: 0; padding: 0; font-size: .9rem; flex-wrap: wrap; }
.nav ul a { color: var(--ink); text-decoration: none; }
.nav ul a:hover, .nav ul a[aria-current] { color: var(--signal-ink); }

.mark .corner { stroke: var(--ink); }
.mark .thread { stroke: var(--signal); }
.mark .dot { fill: var(--signal); }

.k { display: inline-block; font: 500 .72rem/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--signal-ink); }

.hero { display: grid; grid-template-columns: 1.3fr 1fr; gap: 32px; padding: 64px 0 56px; align-items: center; }
.hero h1 { margin: 12px 0 0; font: 700 clamp(2.1rem, 5vw, 3.4rem)/1.05 var(--display); letter-spacing: -.015em; }
.hero p { font-size: 1.1rem; color: var(--muted); max-width: 46ch; margin: 18px 0 0; }
.hero .mark { width: 100%; max-width: 260px; height: auto; justify-self: center; }
@media (max-width: 760px) { .hero { grid-template-columns: 1fr; padding: 40px 0; } .hero .mark { max-width: 160px; justify-self: start; } }

.rules { border-top: 1px solid var(--line); padding: 40px 0 48px; }
.rules .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 24px; margin-top: 16px; }
.rules h2 { margin: 0 0 6px; font: 600 1.08rem/1.25 var(--display); border-top: 3px solid var(--signal); padding-top: 10px; }
.rules p { margin: 0; color: var(--muted); font-size: .95rem; }

.doc { background: var(--sheet); border: 1px solid var(--line); margin: 40px auto 56px; max-width: 780px; padding: clamp(20px, 4vw, 48px); }
.doc h1 { margin: 10px 0 4px; font: 700 clamp(1.8rem, 4vw, 2.4rem)/1.1 var(--display); }
.doc .meta { font: 400 .8rem/1.5 var(--mono); color: var(--muted); margin: 0 0 24px; }
.doc h2 { font: 600 1.25rem/1.25 var(--display); margin: 32px 0 8px; }
.doc p, .doc li { max-width: 68ch; }
.doc ul, .doc ol { padding-left: 1.3em; }
.doc li { margin: 4px 0; }
.doc table { border-collapse: collapse; width: 100%; font-size: .93rem; margin: 12px 0; }
.doc th, .doc td { text-align: left; vertical-align: top; border-top: 1px solid var(--line); padding: 8px 10px 8px 0; }
.doc th { font: 500 .75rem/1.3 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.table-scroll { overflow-x: auto; }

/* A blank Charlie fills in before publishing. Never ship a page with one left. */
.blank { background: var(--signal-wash); color: var(--signal-ink); font: 500 .8em/1.4 var(--mono); padding: 1px 5px; white-space: normal; }

.foot { border-top: 1px solid var(--line); }
.foot .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-top: 20px; padding-bottom: 28px; font: 400 .8rem/1.5 var(--mono); color: var(--muted); }
.foot a { color: var(--muted); }