/* ============================================================
   SimRace.app — PILLAR PAGES shared stylesheet (v3 design system)
   Single source of truth so every pillar page matches the home:
   mono-forward (JetBrains Mono titles/UI + Inter body + Sui Generis numbers),
   3 coherent themes (DARK · LIGHT · GREY/Audi anthracite, grey = default),
   one switchable brand accent (--accent, follows the driver's livery via
   header.js reading localStorage 'sre_accent').
   Loaded AFTER each page's legacy inline <style> so it overrides it.
   ============================================================ */
@view-transition{navigation:auto}
#sreh{view-transition-name:sre-header}
@font-face{font-family:'PctFix';src:local('Segoe UI Semibold'),local('Segoe UI'),local('Arial');unicode-range:U+0025}

/* ---- DARK (fallback when no data-theme) ---- */
:root{
  --bg:#08090c;--s1:#0e0f14;--s2:#14151c;--bd:#22232e;--bd2:#3a3c4c;
  --tx:#f5f6fa;--mid:#c3c6d6;--dim:#9094ac;--card:#0e0f14;--shadow:0 18px 50px rgba(0,0,0,.5);
  --chipbg:#101119;   /* header chip background (matches the home) */
  --accent:#ff3b3b;--accent-ink:#ffffff;--accent-soft:rgba(255,59,59,.14);
  /* legacy aliases used by the pages' inline rules → routed to the accent */
  --lime:var(--accent);--lime2:var(--accent);--onlime:var(--accent-ink);
  --limesoft:var(--accent-soft);--limebd:color-mix(in srgb,var(--accent) 55%,transparent);
  --cy:#6ea8ff;--cy2:#3f6fb0;
  /* fonts — mono-forward instrument identity */
  --fb:'Inter',system-ui,-apple-system,sans-serif;            /* body paragraphs */
  --fd:'JetBrains Mono',ui-monospace,monospace;               /* display titles */
  --fm:'JetBrains Mono',ui-monospace,monospace;               /* UI / labels */
  --fh:var(--fb);                                             /* legacy alias (was Sora) */
  --fn:'PctFix','Sui Generis',ui-monospace,'JetBrains Mono',monospace; /* numbers */
}
html[data-theme="light"]{
  --bg:#f7f8f5;--s1:#ffffff;--s2:#ffffff;--bd:#dfe3d8;--bd2:#b4bca6;
  --tx:#16180f;--mid:#5c6052;--dim:#9aa08c;--card:#ffffff;--shadow:0 6px 22px rgba(22,24,15,.12);--chipbg:#f3f5ee;
  --accent:#d23a33;--accent-ink:#ffffff;--accent-soft:rgba(210,58,51,.12);
  --cy:#2f6bd6;--cy2:#23508f;
}
html[data-theme="grey"]{
  /* Audi anthracite — matte greys + near-white text */
  --bg:#33363b;--s1:#3c4046;--s2:#44484e;--bd:#4a4e55;--bd2:#6b707a;
  --tx:#eef0f2;--mid:#b9bdc4;--dim:#8b9098;--card:#3c4046;--shadow:0 14px 40px rgba(0,0,0,.4);--chipbg:#3c4046;
  --accent:#ff3b3b;--accent-ink:#ffffff;--accent-soft:rgba(255,59,59,.14);
  --cy:#6ea8ff;--cy2:#3f6fb0;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{background:var(--bg);color:var(--tx);font-family:var(--fb);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit}
.wrap{max-width:860px;margin:0 auto;padding:0 22px}
.logo{font-weight:800;letter-spacing:-.02em;font-size:18px;text-decoration:none;font-family:var(--fd)}
.logo .a{color:var(--accent)}
/* hero */
header.hero{text-align:center;padding:80px 0 48px}
.kick{display:inline-flex;align-items:center;gap:8px;background:var(--accent-soft);border:1px solid color-mix(in srgb,var(--accent) 45%,transparent);border-radius:30px;padding:7px 16px;font-size:12px;font-family:var(--fm);letter-spacing:.05em;text-transform:uppercase;color:var(--tx)}
h1{font-family:var(--fd);font-size:clamp(34px,5.4vw,60px);font-weight:800;line-height:1.04;letter-spacing:-1px;margin:18px 0 12px}
.sub{font-family:var(--fb);font-size:17px;color:var(--mid);max-width:660px;margin:16px auto 0;line-height:1.6}
/* sections */
section.blk{padding:48px 0;border-top:1px solid var(--bd)}
h2{font-family:var(--fd);font-size:clamp(20px,2.5vw,27px);font-weight:700;letter-spacing:-.01em;margin:0 0 18px}
h2 .c{color:var(--accent)}
h3{font-family:var(--fd);font-weight:700;margin:0 0 10px}
p{margin:0 0 16px;color:var(--mid)}
p b,li b{color:var(--tx)}
ul{margin:10px 0 0;padding-left:0;list-style:none}
li{position:relative;padding-left:22px;margin:8px 0;color:var(--mid)}
li::before{content:"";position:absolute;left:2px;top:10px;width:7px;height:7px;border-radius:50%;background:var(--accent)}
.callout{font-family:var(--fm);font-size:13px;background:var(--s2);border:1px solid var(--bd2);border-left:3px solid var(--accent);border-radius:10px;padding:14px 16px;margin:14px 0 0;color:var(--tx);line-height:1.7}
.note{font-size:13px;color:var(--dim);font-style:italic;margin-top:10px}
/* numbered steps */
.steps{counter-reset:s;margin-top:14px}
.step{position:relative;padding:12px 0 12px 44px;border-top:1px solid var(--bd)}
.step::before{counter-increment:s;content:counter(s);position:absolute;left:0;top:13px;width:28px;height:28px;border-radius:50%;background:var(--accent);color:var(--accent-ink);font-weight:800;font-family:var(--fm);font-size:13px;display:flex;align-items:center;justify-content:center}
.step b{color:var(--tx)}
/* figures + lightbox */
.fig{margin:30px 0 8px}
.fig img{width:100%;display:block;border:1px solid var(--bd);border-radius:10px;margin:12px 0;cursor:zoom-in;background:var(--s2);transition:border-color .15s}
.fig img:hover{border-color:var(--accent)}
#lb{position:fixed;inset:0;background:rgba(0,0,0,.9);display:none;align-items:center;justify-content:center;z-index:200;cursor:zoom-out;padding:18px}
#lb.on{display:flex}
#lb img{max-width:97vw;max-height:94vh;border-radius:8px;box-shadow:0 20px 60px rgba(0,0,0,.6)}
#lb .x{position:fixed;top:10px;right:18px;color:#fff;font-size:30px;line-height:1;cursor:pointer;font-family:var(--fm)}
.fig .ph{padding:30px 18px;text-align:center;color:var(--dim);font-family:var(--fm);font-size:12px;line-height:1.6;letter-spacing:.02em}
.fig figcaption{padding:6px 4px 0;font-size:12.5px;color:var(--mid);text-align:center}
/* FAQ */
.faq{margin-top:10px}
.faq details{border-top:1px solid var(--bd);padding:13px 0}
.faq summary{cursor:pointer;font-weight:700;color:var(--tx);font-size:15.5px;list-style:none;position:relative;padding-right:22px;font-family:var(--fd)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:2px;top:-2px;color:var(--accent);font-weight:800}
.faq details[open] summary::after{content:"\2013"}
.faq p{margin:9px 0 0}
/* CTA + buttons */
.cta{text-align:center;padding:44px 0 60px;border-top:1px solid var(--bd)}
.btn{display:inline-block;background:var(--accent);color:var(--accent-ink);font-weight:700;text-decoration:none;padding:12px 22px;border-radius:10px;font-size:14px;font-family:var(--fd);box-shadow:0 6px 22px var(--accent-soft);transition:transform .1s ease,filter .12s ease}
.btn.ghost{background:transparent;border:1px solid var(--bd2);color:var(--tx);box-shadow:none}
.btn:hover{transform:translateY(-1px);filter:brightness(1.05)}
footer{padding:26px 0;text-align:center;color:var(--dim);font-size:12px;border-top:1px solid var(--bd);font-family:var(--fm)}
/* numbers in the pit-wall font wherever a page marks them */
.num,.tabular,.figure-num{font-family:var(--fn);font-variant-numeric:tabular-nums}