:root{
  --ground:#EBECEF;--surface:#FFFFFF;--surface-2:#F3F4F6;
  --ink:#171A21;--ink-soft:#3C4250;--muted:#646B7A;--line:#DEDFE4;
  --accent:#2540E6;--accent-ink:#1B2FB0;--accent-wash:#E7EAFD;
  --code-bg:#0E1016;--code-bar:#191C24;--code-ink:#E5E8F0;--code-dim:#868D9E;--code-accent:#93A4FF;
  --font-display:"Bricolage Grotesque","Segoe UI",system-ui,sans-serif;
  --font-body:"IBM Plex Sans","Segoe UI",system-ui,-apple-system,sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --ground:#0F1117;--surface:#191C23;--surface-2:#1F232C;
    --ink:#E9EAEE;--ink-soft:#C3C7D1;--muted:#8B909E;--line:#2A2E39;
    --accent:#8194FF;--accent-ink:#A6B2FF;--accent-wash:#20263E;
  }
}
:root[data-theme="dark"]{
  --ground:#0F1117;--surface:#191C23;--surface-2:#1F232C;
  --ink:#E9EAEE;--ink-soft:#C3C7D1;--muted:#8B909E;--line:#2A2E39;
  --accent:#8194FF;--accent-ink:#A6B2FF;--accent-wash:#20263E;
}
*,*::before,*::after{box-sizing:border-box}
body{margin:0;background:var(--ground);color:var(--ink);font-family:var(--font-body);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased}
h1,h2,h3{font-family:var(--font-display);line-height:1.15;text-wrap:balance;margin:0}
p,ul,ol{margin:0}
a{color:var(--accent-ink)}
.wrap{max-width:1160px;margin-inline:auto;padding-inline:clamp(16px,4vw,34px)}

.site-head{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--ground) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.head-inner{display:flex;align-items:center;gap:24px;height:60px}
.brand{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-display);font-weight:800;font-size:1.05rem;text-decoration:none;color:var(--ink);letter-spacing:-.01em}
.brand-mark{font-family:var(--font-mono);font-weight:500;color:var(--accent);background:var(--accent-wash);border-radius:7px;width:26px;height:26px;display:grid;place-items:center;font-size:1rem}
.head-nav{margin-left:auto;display:flex;gap:20px;font-size:.9rem}
.head-nav a{text-decoration:none;color:var(--muted)}
.head-nav a:hover,.head-nav a[aria-current]{color:var(--ink)}

.page-head{padding:clamp(40px,6vw,64px) 0 clamp(22px,3vw,30px);border-bottom:1px solid var(--line);background:linear-gradient(to bottom,color-mix(in srgb,var(--accent-wash) 45%,transparent),transparent)}
.eyebrow{font-family:var(--font-mono);font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-ink);margin-bottom:14px}
.eyebrow a{text-decoration:none;color:inherit}
h1{font-size:clamp(1.9rem,4.4vw,2.9rem);letter-spacing:-.025em;max-width:22ch}
.lead{margin-top:16px;max-width:60ch;font-size:1.06rem;color:var(--ink-soft)}
.meta{margin-top:18px;font-family:var(--font-mono);font-size:.74rem;color:var(--muted);letter-spacing:.04em}

main{padding:clamp(32px,5vw,56px) 0 clamp(48px,7vw,80px)}
.doc{max-width:70ch;display:flex;flex-direction:column;gap:22px}
.doc h2{font-size:clamp(1.25rem,2.5vw,1.55rem);letter-spacing:-.015em;margin-top:22px}
.doc h3{font-size:1.08rem;margin-top:8px}
.doc p,.doc li{color:var(--ink-soft)}
.doc ul,.doc ol{padding-left:22px;display:flex;flex-direction:column;gap:8px}
.doc strong{color:var(--ink);font-weight:600}
.doc code{font-family:var(--font-mono);font-size:.88em;background:var(--surface-2);border:1px solid var(--line);border-radius:5px;padding:1px 6px}

.prompt{
  background:var(--code-bg);color:var(--code-ink);border-radius:12px;overflow:hidden;
  border:1px solid #23262F;margin:4px 0;
}
.prompt-bar{display:flex;align-items:center;gap:10px;padding:9px 14px;background:var(--code-bar);border-bottom:1px solid #23262F;font-family:var(--font-mono);font-size:.72rem;color:var(--code-dim);letter-spacing:.06em;text-transform:uppercase}
.prompt-bar.bad{color:#E0685E}
.prompt-bar.good{color:#5CB877}
.prompt pre{margin:0;padding:16px;font-family:var(--font-mono);font-size:.84rem;line-height:1.65;white-space:pre-wrap;word-break:break-word;color:var(--code-ink)}
.prompt pre .h{color:var(--code-accent);font-weight:600}

.callout{background:var(--accent-wash);border-left:3px solid var(--accent);border-radius:0 12px 12px 0;padding:16px 20px}
.callout p{color:var(--ink)}

.cta{
  margin-top:14px;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:26px;
  display:flex;flex-direction:column;gap:12px;align-items:flex-start;
}
.cta h2{margin:0;font-size:1.25rem}
.cta p{color:var(--ink-soft)}
.cta-btn{display:inline-block;background:var(--accent);color:#fff;text-decoration:none;font-weight:600;padding:12px 20px;border-radius:10px;font-size:.98rem}
.cta-btn:hover{filter:brightness(.92)}

.related{margin-top:36px;padding-top:28px;border-top:1px solid var(--line);max-width:70ch}
.related h2{font-size:1.1rem;margin-bottom:14px}
.related ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:10px}
.related a{text-decoration:none;color:var(--accent-ink);font-weight:500}
.related a:hover{text-decoration:underline}

.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:8px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:20px;display:flex;flex-direction:column;gap:8px;text-decoration:none;color:inherit;transition:border-color .15s}
.card:hover{border-color:var(--muted)}
.card .tag{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--accent-ink)}
.card h2{font-size:1.05rem;margin:0}
.card p{font-size:.92rem;color:var(--muted)}

footer{border-top:1px solid var(--line);padding:34px 0;background:var(--surface);font-size:.88rem;color:var(--muted)}
.foot-inner{display:flex;flex-wrap:wrap;gap:14px 28px;align-items:baseline}
.foot-links{display:flex;flex-wrap:wrap;gap:18px;margin-left:auto}
.foot-links a{text-decoration:none;color:var(--muted)}
.foot-links a:hover{color:var(--ink)}
.foot-fine{width:100%;font-size:.8rem;opacity:.85}

@media (max-width:700px){
  .head-nav{gap:14px;font-size:.84rem}
  .grid{grid-template-columns:1fr}
  .foot-links{margin-left:0}
}