@font-face{
  font-family:'DM Sans';
  src:url('/assets/dm-sans.woff2') format('woff2');
  font-weight:100 1000;font-style:normal;font-display:swap;
}

:root{
  --bg:#100e0b;
  --bg-soft:#171410;
  --surface:#1b1713;
  --surface-2:#221d17;
  --line:rgba(255,214,170,.12);
  --line-strong:rgba(255,214,170,.26);
  --text:#f7efe4;
  --muted:#a99b8a;
  --prose-text:#cbbdac;
  --accent:#ff8a3d;
  --accent-2:#ffc46b;
  --accent-soft:rgba(255,138,61,.16);
  --mark-bg:linear-gradient(135deg,#ff8a3d,#ffb85c);
  --on-accent:#20160c;
  --hover-bg:rgba(255,214,170,.07);
  --header-bg:rgba(16,14,11,.82);
  --footer-bg:#0c0a08;
  --code-bg:#0c0a08;
  --radius:4px;
  --radius-sm:3px;
  --mark-radius:2px;
  --pill:3px;
  --btn-radius:3px;
  --tracking:-.01em;
  --shell:1160px;
  --font:'DM Sans',system-ui,-apple-system,sans-serif;
  --font-display:Georgia,'Times New Roman',serif;
  --font-mono:ui-monospace,'SFMono-Regular',Menlo,Consolas,monospace;
  --btn-shadow:0 10px 26px rgba(255,138,61,.22);
}

.brand-text small{font-family:var(--font-mono);letter-spacing:.06em}

/* ---------- hero: asymmetric editorial split ---------- */
.hero{padding-block:clamp(48px,7vw,92px) clamp(40px,6vw,74px);border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:clamp(28px,4.5vw,58px);align-items:end}
.hero-copy h1{margin-bottom:24px}
.hero-copy h1 em{font-style:italic;color:var(--accent)}
.hero-copy .lede{max-width:56ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-figure{margin:0;position:relative}
.hero-figure img{width:100%;aspect-ratio:4/5;object-fit:cover;object-position:50% 24%;border:1px solid var(--line)}
.hero-figure figcaption{
  margin-top:12px;font-size:.76rem;font-family:var(--font-mono);color:var(--muted);
  border-top:1px solid var(--line);padding-top:10px;
}
.rule-double{border-top:3px double var(--line-strong);margin-top:34px}

/* ---------- prompt rail: horizontal scroller ---------- */
.rail-section{padding-block:clamp(44px,6vw,72px);border-bottom:1px solid var(--line)}
.rail-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:14px;margin-bottom:26px}
.rail-head h2{font-size:clamp(1.4rem,2.6vw,2rem)}
.rail-head span{font-family:var(--font-mono);font-size:.74rem;color:var(--muted);letter-spacing:.08em}
.rail{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(300px,340px);gap:16px;overflow-x:auto;padding-bottom:16px;scroll-snap-type:x mandatory}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-thumb{background:var(--line-strong)}
.prompt-card{scroll-snap-align:start;border:1px solid var(--line);background:var(--surface);padding:22px;display:flex;flex-direction:column;gap:14px}
.prompt-card h3{font-size:1rem;font-family:var(--font-display)}
.prompt-card .slot{font-family:var(--font-mono);font-size:.66rem;letter-spacing:.14em;color:var(--accent);text-transform:uppercase}
.prompt-card pre{margin:0;background:var(--code-bg);border:1px solid var(--line);padding:14px;font-family:var(--font-mono);font-size:.76rem;line-height:1.65;color:#e8dcc9;overflow-x:auto;white-space:pre-wrap}
.prompt-card p{font-size:.86rem;color:var(--muted);margin:0}

/* ---------- doc layout: sticky toc + long copy ---------- */
.doc-section{padding-block:clamp(46px,6vw,84px);background:var(--bg-soft);border-bottom:1px solid var(--line)}
.doc{display:grid;grid-template-columns:220px 1fr;gap:clamp(28px,4vw,64px);align-items:start}
.toc{position:sticky;top:96px;border-left:2px solid var(--line-strong);padding-left:18px}
.toc p{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:14px}
.toc ol{list-style:none;margin:0;padding:0;display:grid;gap:11px;counter-reset:toc}
.toc li{counter-increment:toc}
.toc a{font-size:.88rem;color:var(--muted);display:flex;gap:10px;transition:color .16s}
.toc a::before{content:counter(toc,decimal-leading-zero);font-family:var(--font-mono);font-size:.72rem;color:var(--accent)}
.toc a:hover{color:var(--text)}
.doc-body h2{font-size:clamp(1.3rem,2.4vw,1.85rem);margin-bottom:16px}
.doc-body h3{font-size:1.04rem;margin:30px 0 10px}
.doc-body p{color:var(--prose-text);margin-bottom:18px}
.doc-body ul{margin:0 0 20px;padding-left:20px;color:var(--prose-text)}
.doc-body li{margin-bottom:9px}
.doc-body strong{color:var(--text)}

/* ---------- glossary ---------- */
.glossary-section{padding-block:clamp(44px,6vw,76px)}
.glossary{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:0;border-top:1px solid var(--line)}
.term{padding:20px 22px 20px 0;border-bottom:1px solid var(--line)}
.term dt{font-family:var(--font-mono);font-size:.8rem;color:var(--accent);margin-bottom:8px;letter-spacing:.04em}
.term dd{margin:0;font-size:.9rem;color:var(--muted)}

@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;align-items:start}
  .hero-figure img{aspect-ratio:16/11}
  .doc{grid-template-columns:1fr}
  .toc{position:static;border-left:0;border-top:1px solid var(--line-strong);padding:18px 0 0}
}
@media (max-width:760px){
  .rail{grid-auto-columns:minmax(258px,80vw)}
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);font-family:var(--font);
  font-size:17px;line-height:1.66;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3{margin:0;line-height:1.13;font-weight:600;font-family:var(--font-display);letter-spacing:var(--tracking,-.022em)}
h1{font-size:clamp(2.2rem,5vw,3.9rem)}
h2{font-size:clamp(1.6rem,3vw,2.45rem)}
h3{font-size:1.14rem;letter-spacing:-.01em}
p{margin:0}

.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:24px}
.narrow{max-width:820px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip{position:absolute;left:-9999px;top:0;z-index:100;background:var(--accent);color:var(--on-accent);padding:12px 18px;border-radius:0 0 10px 0;font-weight:600}
.skip:focus{left:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

/* ---- header ---- */
.site-header{position:sticky;top:0;z-index:60;background:var(--header-bg);backdrop-filter:saturate(150%) blur(14px);-webkit-backdrop-filter:saturate(150%) blur(14px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:var(--header-h,70px)}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{display:grid;place-items:center;width:38px;height:38px;flex:none;border-radius:var(--mark-radius,11px);font-size:.8rem;font-weight:700;background:var(--mark-bg,linear-gradient(135deg,var(--accent),var(--accent-2)));color:var(--on-accent);letter-spacing:.02em}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:1.02rem;font-family:var(--font-display)}
.brand-text small{font-size:.68rem;color:var(--muted);letter-spacing:.1em;text-transform:uppercase}
.site-nav{display:flex;align-items:center;gap:4px}
.site-nav a{padding:9px 14px;border-radius:var(--pill,999px);font-size:.92rem;color:var(--muted);transition:color .18s,background .18s}
.site-nav a:hover,.site-nav a.is-active{color:var(--text);background:var(--hover-bg)}
.site-nav .nav-cta{color:var(--on-accent);font-weight:600;background:var(--mark-bg,linear-gradient(135deg,var(--accent),var(--accent-2)))}
.menu{display:none;background:none;border:1px solid var(--line-strong);color:var(--text);font:inherit;font-size:.86rem;padding:8px 16px;border-radius:var(--pill,999px);cursor:pointer}

/* ---- buttons ---- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 26px;border-radius:var(--btn-radius,999px);font-size:.95rem;font-weight:600;border:1px solid transparent;transition:transform .16s,box-shadow .2s,background .2s,border-color .2s;white-space:nowrap}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--mark-bg,linear-gradient(135deg,var(--accent),var(--accent-2)));color:var(--on-accent);box-shadow:var(--btn-shadow,0 12px 30px rgba(0,0,0,.3))}
.btn-ghost{border-color:var(--line-strong);color:var(--text);background:var(--hover-bg)}
.btn-ghost:hover{border-color:var(--accent)}

/* ---- sub page shell ---- */
.breadcrumb{font-size:.82rem;color:var(--muted);padding-top:30px}
.breadcrumb a:hover{color:var(--accent)}
.page-head{padding-block:clamp(40px,6vw,76px) 0}
.page-head h1{font-size:clamp(1.9rem,4.1vw,3rem);max-width:22ch}
.lede{margin-top:20px;color:var(--muted);font-size:1.06rem;max-width:66ch}
.meta-row{display:flex;flex-wrap:wrap;gap:10px;list-style:none;padding:0;margin:24px 0 0}
.meta-row li{font-size:.74rem;letter-spacing:.08em;color:var(--muted);border:1px solid var(--line);border-radius:var(--pill,999px);padding:6px 13px;text-transform:uppercase}
.kicker{display:inline-flex;align-items:center;gap:9px;font-size:.74rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin-bottom:18px}
.kicker .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}

/* ---- prose ---- */
.prose{max-width:none;padding-block:clamp(34px,5vw,58px)}
.prose h2{font-size:1.46rem;margin:44px 0 16px}
.prose h3{font-size:1.1rem;margin:30px 0 12px}
.prose p{margin-bottom:18px;color:var(--prose-text,var(--muted))}
.prose ul,.prose ol{margin:0 0 18px;padding-left:22px;color:var(--prose-text,var(--muted))}
.prose li{margin-bottom:9px}
.prose strong{color:var(--text)}
.prose a{color:var(--accent);border-bottom:1px solid var(--accent-soft)}
.prose a:hover{border-bottom-color:var(--accent)}
.prose blockquote{margin:26px 0;padding:20px 24px;border-left:3px solid var(--accent);background:var(--surface);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text);font-size:1.02rem}
.prose code{font-family:var(--font-mono);font-size:.88em;background:rgba(255,255,255,.07);padding:2px 6px;border-radius:6px}
.prose pre{background:var(--code-bg,#101018);border:1px solid var(--line);border-radius:var(--radius-sm);padding:18px 20px;overflow-x:auto;font-size:.85rem;line-height:1.6;margin-bottom:20px}
.prose pre code{background:none;padding:0}
.prose img{border-radius:var(--radius);border:1px solid var(--line);margin:26px 0}
.prose table{width:100%;border-collapse:collapse;margin:26px 0;font-size:.92rem}
.prose th,.prose td{padding:13px 16px;border:1px solid var(--line);text-align:left}
.prose th{background:var(--bg-soft);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}

/* ---- guide cards ---- */
.guide-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(278px,1fr));gap:18px;padding-bottom:clamp(48px,7vw,84px)}
.guide-card{display:flex;flex-direction:column;gap:12px;padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);transition:border-color .2s,transform .2s,background .2s}
.guide-card:hover{border-color:var(--accent);transform:translateY(-3px)}
.guide-card span{font-size:.7rem;font-weight:700;letter-spacing:.18em;color:var(--accent)}
.guide-card h3{margin:0}
.guide-card p{color:var(--muted);font-size:.92rem;flex:1}
.guide-card em{font-style:normal;font-weight:700;color:var(--accent);font-size:.86rem}

/* ---- footer ---- */
.site-footer{background:var(--footer-bg,var(--bg));border-top:1px solid var(--line);padding-block:56px;font-size:.9rem}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:36px}
.footer-grid strong{font-size:1.04rem;font-family:var(--font-display)}
.footer-grid p{color:var(--muted);margin-top:12px;max-width:44ch}
.footer-grid .fine{font-size:.78rem;color:var(--muted);opacity:.72}
.footer-grid nav{display:flex;flex-direction:column;gap:10px}
.footer-grid nav a{color:var(--muted);transition:color .18s}
.footer-grid nav a:hover{color:var(--accent)}

@media (max-width:960px){
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  body{font-size:16px}
  .menu{display:inline-block}
  .site-nav{position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;gap:2px;background:var(--bg);border-bottom:1px solid var(--line);padding:12px 20px 20px;display:none}
  .site-nav.is-open{display:flex}
  .site-nav a{padding:13px 14px;border-radius:12px}
  .brand-text small{display:none}
  .footer-grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}
  .cta-band{padding-block:clamp(52px,7vw,96px);border-top:1px solid var(--line,rgba(255,255,255,.12))}
  .cta-band-inner{display:flex;flex-wrap:wrap;gap:26px;align-items:center;justify-content:space-between;gap:26px;border:1px solid var(--line,rgba(255,255,255,.12));border-radius:16px;padding:clamp(24px,4vw,40px);background:linear-gradient(135deg,color-mix(in srgb,var(--accent) 10%,transparent),transparent 70%)}
  .cta-band-copy{max-width:56ch}
  .cta-band-copy h2{margin:8px 0 10px;font-size:clamp(1.4rem,2.6vw,2rem);line-height:1.18}
  .cta-band-copy p{color:var(--muted);margin:0}
  .cta-band-actions{display:flex;flex-wrap:wrap;gap:12px}
  @media (max-width:720px){.cta-band-inner{flex-direction:column;align-items:flex-start}.cta-band-actions{width:100%}.cta-band-actions .btn{flex:1 1 auto;text-align:center}}