/* ════════════════════════════════════════════════════════════
   GoXC — shared styles for sub-pages
   (tokens, nav, footer, buttons, bib, page scaffolding)
   ════════════════════════════════════════════════════════════ */

:root {
  --crimson: #C8102E;
  --crimson-deep: #8A0C20;
  --crimson-dim: rgba(200,16,46,0.18);
  --paper: #F5F5F7;
  --ink: #0A0A0A;
  --bg: #0A0A0C;
  --card: #121214;
  --card-2: #17171B;
  --border: rgba(255,255,255,0.07);
  --border-2: rgba(255,255,255,0.12);
  --text: #F5F5F7;
  --muted: rgba(235,235,245,0.6);
  --subtle: rgba(235,235,245,0.32);
  --display: "Big Shoulders Display", "Bebas Neue", Impact, "Arial Black", sans-serif;
  --body: "Inter", -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text);
  font-family: var(--body); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
body { overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
::selection { background: var(--crimson); color: var(--paper); }

.wrap { max-width: 1280px; margin: 0 auto; padding: 0 32px; }
.narrow { max-width: 940px; margin: 0 auto; padding: 0 32px; }

/* ─── Bib tile ─────────────────────────────────────────────── */
.bib { position: relative; background: var(--crimson); color: var(--paper); overflow: hidden;
       box-shadow: inset 0 0 0 0.5px rgba(255,255,255,0.06); }
.bib .pin { position: absolute; top: 8%; width: 3.5%; aspect-ratio: 1; border-radius: 999px;
            background: rgba(0,0,0,0.35); box-shadow: inset 0 1px 1px rgba(0,0,0,0.55); }
.bib .pin.left  { left: 13%; }
.bib .pin.right { right: 13%; }
.bib .rule { position: absolute; top: 16.5%; left: 10%; right: 10%; height: 1.4%;
             background: rgba(255,255,255,0.92); border-radius: 1px; }
.bib .stack { position: absolute; inset: 22.5% 0 18% 0; display: flex; flex-direction: column;
              align-items: center; justify-content: center;
              font-family: var(--display); font-weight: 900; line-height: 0.85; letter-spacing: -0.02em; }
.bib .stack .go { font-size: 0.34em; }
.bib .stack .xc { font-size: 0.50em; }
.bib .num { position: absolute; bottom: 7%; left: 0; right: 0; text-align: center;
            font-family: var(--mono); font-weight: 700; font-size: 0.052em; opacity: 0.55;
            letter-spacing: 0.06em; }
.bib.size-sm { font-size: 40px; width: 40px; height: 40px; border-radius: 9px; }
.bib.size-lg { font-size: 200px; width: 200px; height: 200px; border-radius: 46px; }

/* ─── Nav ──────────────────────────────────────────────────── */
.nav { position: sticky; top: 0; z-index: 100;
       background: rgba(10,10,12,0.72); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
       border-bottom: 1px solid var(--border); }
.nav-inner { display: flex; align-items: center; gap: 32px; padding: 14px 0; }
.lockup { display: flex; align-items: center; gap: 11px; }
.lockup .word { font-family: var(--display); font-weight: 900; font-size: 32px;
                letter-spacing: -0.04em; line-height: 1; }
.lockup .word .x { color: var(--crimson); }
.nav-links { display: flex; gap: 28px; margin-left: 24px; }
.nav-links a { font-size: 14px; font-weight: 500; color: var(--muted); transition: color 0.15s; }
.nav-links a:hover { color: var(--text); }
.nav-links a.here { color: var(--text); }
.nav-cta { margin-left: auto; display: flex; gap: 10px; align-items: center; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 11px 18px; white-space: nowrap;
       border-radius: 10px; font-weight: 600; font-size: 14px; transition: transform 0.1s, background 0.15s; }
.btn:active { transform: scale(0.97); }
.btn.ghost { color: var(--text); border: 1px solid var(--border-2); }
.btn.ghost:hover { background: rgba(255,255,255,0.05); }
.btn.solid { background: var(--crimson); color: var(--paper);
             box-shadow: 0 1px 0 rgba(255,255,255,0.15) inset, 0 8px 24px rgba(200,16,46,0.35); }
.btn.solid:hover { background: #d4233f; }
.btn.lg { padding: 14px 22px; font-size: 15px; border-radius: 12px; }

/* ─── Section primitives ───────────────────────────────────── */
section { position: relative; }
.section-num { font-family: var(--mono); font-size: 11px; color: var(--crimson);
               letter-spacing: 0.12em; font-weight: 700; display: inline-flex; align-items: center; gap: 10px; }
.section-num::before { content: ''; width: 18px; height: 1px; background: var(--crimson); }
h2.section-h { font-family: var(--display); font-weight: 900; font-size: clamp(40px, 4.4vw, 64px);
               line-height: 0.92; letter-spacing: -0.035em; margin: 14px 0 0; }
h2.section-h .crimson { color: var(--crimson); }
.section-lede { font-size: 18px; line-height: 1.5; color: var(--muted); max-width: 60ch; margin-top: 20px; }

/* ─── Page header (sub-page hero) ──────────────────────────── */
.page-head { position: relative; overflow: hidden; padding: 80px 0 56px;
             border-bottom: 1px solid var(--border); }
.page-head .glow { position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background: radial-gradient(ellipse 60% 80% at 85% 10%, rgba(200,16,46,0.20), transparent 65%); }
.page-head .grid-bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; opacity: 0.04;
  background-image: linear-gradient(rgba(255,255,255,1) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,1) 1px, transparent 1px);
  background-size: 64px 64px; mask-image: linear-gradient(180deg, #000 0%, transparent 90%); }
.page-head .wrap { position: relative; z-index: 1; }
.page-eyebrow { display: inline-flex; align-items: center; gap: 10px; margin-bottom: 22px; white-space: nowrap;
  background: rgba(255,255,255,0.05); border: 1px solid var(--border-2);
  padding: 7px 15px; border-radius: 999px; font-family: var(--mono);
  font-size: 11px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.page-eyebrow .dot { width: 8px; height: 8px; border-radius: 999px; background: var(--crimson);
  box-shadow: 0 0 12px var(--crimson); }
h1.page-h { font-family: var(--display); font-weight: 900; font-size: clamp(56px, 7.5vw, 104px);
  line-height: 0.86; letter-spacing: -0.035em; margin: 0; max-width: 18ch; }
h1.page-h .crimson { color: var(--crimson); }
h1.page-h .mark { color: var(--paper);
  -webkit-box-decoration-break: clone; box-decoration-break: clone;
  background-image: linear-gradient(var(--crimson), var(--crimson));
  background-repeat: no-repeat; background-position: 0 0.16em; background-size: 100% 0.78em;
  padding: 0 0.1em; }
.page-head .page-sub { font-size: 19px; line-height: 1.55; color: var(--muted); max-width: 56ch; margin: 26px 0 0; }
.page-head .page-sub b { color: var(--text); font-weight: 600; }
.crumbs { display: flex; align-items: center; gap: 9px; font-family: var(--mono);
  font-size: 11px; letter-spacing: 0.08em; color: var(--subtle); text-transform: uppercase; margin-bottom: 26px; }
.crumbs a { color: var(--muted); }
.crumbs a:hover { color: var(--text); }
.crumbs .sep { opacity: 0.5; }

/* ─── Footer ───────────────────────────────────────────────── */
footer { padding: 70px 0 30px; border-top: 1px solid var(--border); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 48px; }
.foot-col h5 { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em;
                color: var(--muted); text-transform: uppercase; margin: 0 0 18px; }
.foot-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 12px; }
.foot-col a { font-size: 14px; color: var(--text); transition: color 0.15s; }
.foot-col a:hover { color: var(--crimson); }
.foot-tagline { color: var(--muted); font-size: 14px; line-height: 1.5; margin: 20px 0 0; max-width: 36ch; }
.foot-bottom { display: flex; justify-content: space-between; align-items: center;
                margin-top: 60px; padding-top: 24px; border-top: 1px solid var(--border);
                font-family: var(--mono); font-size: 11px; color: var(--subtle);
                letter-spacing: 0.08em; }
.foot-bottom .bib-num { color: var(--crimson); }

@media (max-width: 1080px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .nav-links { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}