:root{--bg:#0d110f;--surface:#142019;--ink:#e8e4d8;--muted:#aab3a7;--accent:#d4a849;--accent-ink:#14140f;--accent2:#2f7a4f;--line:#2b3b31;--hero-ink:#f4efe1;--r:0px;--maxw:1100px;--measure:70ch;--hf:'Oswald', 'Arial Narrow', sans-serif;--bf:'Nunito Sans', system-ui, sans-serif}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.65 var(--bf)}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-underline-offset:.18em}
h1,h2,h3,h4{font-family:var(--hf);line-height:1.18;margin:1.6em 0 .5em;font-weight:600;letter-spacing:.02em}
h1{font-size:clamp(2rem,5vw,3.8rem);margin-top:0}
h2{font-size:clamp(1.4rem,3vw,2rem)}h3{font-size:1.2rem}
p,ul,ol,table,details{margin:0 0 1.1em}
.wrap{max-width:max(var(--maxw),min(88vw,1760px));margin:0 auto;padding:0 20px}
@media(min-width:1800px){body article.prose>:is(p,ul,ol,h2,h3,h4,blockquote,dl,details,.callout,.disclosure,.table-wrap){max-width:52rem}}
.skip{position:absolute;left:-999px}.skip:focus{left:10px;top:10px;background:var(--surface);padding:8px;z-index:9}
header.site{border-bottom:1px solid var(--line);background:var(--surface)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:14px;padding-bottom:14px;flex-wrap:wrap}
.brand{font-family:var(--hf);font-weight:800;font-size:1.25rem;color:var(--ink);text-decoration:none;display:flex;align-items:center;gap:10px}
.brand svg{flex:none}
nav.main ul{list-style:none;display:flex;flex-wrap:wrap;gap:4px 18px;margin:0;padding:0}
nav.main a{color:var(--ink);text-decoration:none;font-size:.95rem;padding:4px 0;border-bottom:2px solid transparent}
nav.main a[aria-current]{border-color:var(--accent)}
.menu-btn{display:none}
@media(max-width:760px){.menu-btn{display:inline-block;background:none;border:1px solid var(--line);color:var(--ink);border-radius:var(--r);padding:6px 12px;font:inherit}
nav.main{width:100%;display:none}nav.main.open{display:block}nav.main ul{flex-direction:column;gap:6px}}
.hero{position:relative;overflow:hidden}
.hero .wrap{padding-top:56px;padding-bottom:56px}
.hero .lead{font-size:1.18rem;color:var(--muted);max-width:60ch}
.hero.full{color:var(--hero-ink);min-height:440px;display:flex;align-items:flex-end}
.hero.full img.bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero.full::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,12,10,.25) 0%,rgba(8,12,10,.55) 45%,rgba(8,12,10,.94) 100%)}
.hero.full .wrap{position:relative;z-index:1;width:100%}.hero.full .lead{color:inherit;opacity:.92}
.hero.split .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.hero.split img{border-radius:var(--r);aspect-ratio:4/3;object-fit:cover;width:100%}
.hero.banner img{width:100%;max-height:380px;object-fit:cover;border-radius:var(--r);margin-top:28px}
.hero.plain{background:var(--surface);border-bottom:1px solid var(--line)}
@media(max-width:760px){.hero.split .wrap{grid-template-columns:1fr}.hero.full{min-height:340px}.hero .wrap{padding-top:36px;padding-bottom:36px}}
.page{display:grid;gap:48px;padding-top:40px;padding-bottom:64px}
.page.toc-layout{grid-template-columns:220px minmax(0,1fr)}
.page.toc-layout .toc{position:sticky;top:20px;align-self:start;font-size:.92rem;border-left:3px solid var(--accent);padding-left:14px}
.page.toc-layout .toc ul{list-style:none;padding:0;margin:0}.page.toc-layout .toc li{margin:.35em 0}
.page.toc-layout .toc a{color:var(--muted);text-decoration:none}
@media(max-width:860px){.page.toc-layout{grid-template-columns:1fr}.page.toc-layout .toc{position:static}}
/* Content uses the full container width (cards, grids, tables); only running text keeps a readable measure. */
article.prose{max-width:none;min-width:0}
article.prose>:is(p,ul,ol,h2,h3,h4,blockquote,dl,details,.callout,.disclosure,.table-wrap){max-width:47.5rem;margin-left:auto;margin-right:auto}
.page.toc-layout article.prose>*{margin-left:0;margin-right:0}
/* A heading that introduces a full-width block (cards, grid, table) lines up with that block, not the text column. */
body article.prose>:is(h2,h3):has(+ :is(.cards,nav,div,table,section,ul.grid)){max-width:none;margin-left:0;margin-right:0}
.page.wide article.prose>*{max-width:none}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin:0 0 1.4em}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px}
.card h3{margin-top:0}.card p:last-child{margin-bottom:0}
a.card{display:block;color:var(--ink);text-decoration:none}a.card:hover{border-color:var(--accent)}
.callout{border-left:4px solid var(--accent2);background:var(--surface);padding:14px 18px;border-radius:0 var(--r) var(--r) 0;margin:0 0 1.2em}
.table-wrap{overflow-x:auto;margin:0 0 1.2em}
table{border-collapse:collapse;width:100%;font-size:.95rem}
th,td{border-bottom:1px solid var(--line);padding:9px 10px;text-align:left;vertical-align:top}
th{font-family:var(--hf);background:var(--surface)}
details{border:1px solid var(--line);border-radius:var(--r);padding:10px 16px;background:var(--surface)}
summary{cursor:pointer;font-weight:600}
.steps{counter-reset:s;list-style:none;padding:0}.steps li{counter-increment:s;position:relative;padding-left:44px;margin-bottom:1em}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:30px;height:30px;border-radius:50%;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;font-weight:700;font-size:.9rem}
.btn{display:inline-block;background:var(--accent);color:var(--accent-ink);padding:10px 18px;border-radius:var(--r);text-decoration:none;font-weight:600;border:0;font:inherit;cursor:pointer}
.aff{border:1px dashed var(--accent);border-radius:var(--r);padding:16px 18px;margin:0 0 1.2em;background:var(--surface)}
.aff .tag{font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.disclosure{font-size:.88rem;color:var(--muted);border:1px solid var(--line);border-radius:var(--r);padding:10px 14px;margin:0 0 1.6em}
.meta{font-size:.88rem;color:var(--muted)}
dl dt{font-family:var(--hf);font-weight:700;margin-top:1em}dl dd{margin:.2em 0 0 0;color:var(--ink)}
footer.site{border-top:1px solid var(--line);background:var(--surface);font-size:.92rem;color:var(--muted)}
footer.site .wrap{padding-top:32px;padding-bottom:32px;display:grid;gap:18px}
footer.site ul{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:6px 18px}
footer.site a{color:var(--muted)}
.bpc{--brass:#d4a849;--brass-dim:#8a6d2c;--felt:#1f5a3a;--felt-deep:#12301f;--rail:#3a2617;color-scheme:dark}
.bpc ::selection{background:var(--brass);color:#14140f}
.bpc a:hover{color:#f0cf7c}
.bpc :focus-visible{outline:2px solid var(--brass);outline-offset:3px}
.bpc h1,.bpc h2,.bpc h3,.bpc .brand,.bpc nav.main a{text-transform:uppercase}
.bpc h2{display:flex;align-items:center;gap:14px;color:#f4efe1}
.bpc h2::after{content:"";flex:1 1 40px;height:1px;background:linear-gradient(90deg,var(--brass-dim),transparent)}
.bpc h3{color:var(--brass);letter-spacing:.04em}
.bpc header.site{background:#080b09;border-bottom:0;box-shadow:inset 0 -1px 0 var(--brass-dim),0 3px 0 var(--rail),0 4px 0 var(--brass-dim)}
.bpc header.site .wrap{padding-top:16px;padding-bottom:16px}
.bpc .brand{color:#f4efe1;letter-spacing:.08em;font-size:1.35rem;font-weight:600}
.bpc nav.main ul{gap:4px 22px}
.bpc nav.main a{color:#c9c4b4;font-family:var(--hf);font-size:.88rem;letter-spacing:.1em}
.bpc nav.main a:hover{color:var(--brass)}
.bpc nav.main a[aria-current]{color:var(--brass);border-color:var(--brass)}
.bpc .menu-btn{color:#f4efe1;border-color:var(--brass-dim);font-family:var(--hf);text-transform:uppercase;letter-spacing:.1em}
.bpc .hero.full{min-height:520px}
.bpc .hero .kicker{display:inline-block;color:var(--brass);font:600 .8rem/1 var(--hf);letter-spacing:.2em;text-transform:uppercase;border:1px solid var(--brass);padding:7px 12px;margin-bottom:18px;opacity:1}
.bpc .hero.full .kicker{background:rgba(8,12,10,.6)}
.bpc .hero.full h1{max-width:18ch;text-shadow:0 2px 18px rgba(0,0,0,.6)}
.bpc .hero.full .lead{max-width:56ch;color:#e6e0cf;opacity:1}
.bpc .hero.plain,.bpc .hero.banner{background:radial-gradient(ellipse at 30% 0%,#1d4a31 0%,var(--felt-deep) 55%,#0b1510 100%);border-bottom:0;box-shadow:inset 0 -6px 0 var(--rail),inset 0 -7px 0 var(--brass-dim)}
.bpc .hero.plain .wrap,.bpc .hero.banner .wrap{position:relative;padding-top:60px;padding-bottom:64px}
.bpc .hero.plain .wrap::after,.bpc .hero.banner .wrap::after{content:"";position:absolute;left:20px;right:20px;bottom:22px;height:8px;background:radial-gradient(circle,var(--brass) 0 3px,transparent 3.5px) 0 0/calc(100%/8) 8px repeat-x;opacity:.75}
.bpc .hero.plain h1,.bpc .hero.banner h1{color:#f4efe1;max-width:24ch}
.bpc .hero.plain .lead,.bpc .hero.banner .lead{color:#cfd6cb}
.bpc .hero.banner img{border-radius:0;border:1px solid var(--brass-dim);max-height:320px;filter:saturate(.9)}
.bpc .page{padding-top:48px}
.bpc .page.toc-layout .toc{border-left:0;padding:16px 18px;background:var(--surface);box-shadow:inset 3px 0 0 var(--brass)}
.bpc .toc strong{font-family:var(--hf);text-transform:uppercase;letter-spacing:.14em;font-size:.8rem;color:var(--brass);font-weight:500}
.bpc .toc a:hover{color:#f4efe1}
.bpc .cards{grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px}.bpc .cards>.card{border:1px solid var(--line)}
.bpc .card{border:0;background:var(--surface);position:relative;padding:22px 22px 24px}
.bpc a.card::before{content:"";position:absolute;top:0;left:0;width:0;height:0;border-top:18px solid var(--brass-dim);border-right:18px solid transparent;transition:border-color .2s}
.bpc a.card:hover{background:#18281e}
.bpc a.card:hover::before{border-top-color:var(--brass)}
.bpc .card h3{margin-top:0;font-size:1.15rem}
.bpc .card p{color:#cfd0c4;margin:0}
.bpc .callout{background:var(--felt-deep);border-left:4px solid var(--brass);border-radius:0;color:#ece7d9}
.bpc table{font-variant-numeric:tabular-nums}
.bpc th{background:#1a2a20;color:var(--brass);font-weight:500;letter-spacing:.04em}
.bpc td,.bpc th{border-bottom-color:var(--line)}
.bpc tbody tr:hover td{background:rgba(212,168,73,.05)}
.bpc .steps li::before{background:radial-gradient(circle,#f4efe1 0 9px,var(--brass) 9.5px);color:#14140f;font-family:var(--hf);box-shadow:0 0 0 2px #0d110f,0 0 0 3px var(--brass-dim)}
.bpc .btn{border-radius:0;font-family:var(--hf);text-transform:uppercase;letter-spacing:.12em}
.bpc details{border-radius:0;border-color:var(--line)}
.bpc details summary{cursor:pointer;font-weight:700;color:#f4efe1}
.bpc footer.site{background:#080b09;border-top:0;box-shadow:inset 0 1px 0 var(--brass-dim),inset 0 4px 0 var(--rail),inset 0 5px 0 var(--brass-dim);color:var(--muted)}
.bpc footer.site .wrap{padding-top:34px}
.bpc footer.site a{color:#d8d2c2}
.bpc footer.site a:hover{color:var(--brass)}
.spec{margin:0 0 1.8em;border:1px solid var(--brass-dim);background:#0f1813;box-shadow:6px 6px 0 #070a08}
.spec figcaption{display:flex;flex-wrap:wrap;align-items:center;gap:6px 14px;padding:12px 16px;background:linear-gradient(90deg,#1b2b20,#132019);border-bottom:2px solid var(--brass)}
.spec-tag{font:600 .7rem/1 var(--hf);letter-spacing:.22em;text-transform:uppercase;background:var(--brass);color:#14140f;padding:5px 8px}
.spec-title{font:500 1.1rem/1.2 var(--hf);text-transform:uppercase;letter-spacing:.06em;color:#f4efe1}
.spec table{margin:0;width:100%;border-collapse:collapse}
.spec tbody th{background:transparent;color:var(--muted);font:500 .82rem/1.4 var(--hf);text-transform:uppercase;letter-spacing:.1em;width:36%;border-right:1px dashed var(--line)}
.spec td,.spec th{padding:10px 16px}
.spec td{color:#f0ebdd}
.spec tbody tr:nth-child(even) td,.spec tbody tr:nth-child(even) th{background:rgba(255,255,255,.025)}
.spec .table-wrap{margin:0}
.spec.sheet thead th{background:#162319;color:var(--brass);font:500 .8rem/1.3 var(--hf);text-transform:uppercase;letter-spacing:.12em;border-bottom:1px solid var(--brass-dim)}
.spec.sheet tbody th{width:auto;color:#f4efe1;letter-spacing:.06em}
.spec-note{margin:0;padding:10px 16px;font-size:.88rem;color:var(--muted);border-top:1px dashed var(--line)}
.anatomy{display:grid;grid-template-columns:repeat(8,1fr);margin:0 0 1.6em;border:1px solid var(--line);background:var(--surface)}
.anatomy span{padding:10px 4px;text-align:center;font:500 .72rem/1.2 var(--hf);text-transform:uppercase;letter-spacing:.08em;color:#d8d2c2;border-right:1px solid var(--line);position:relative}
.anatomy span:last-child{border-right:0}
.anatomy span::before{content:"";display:block;height:8px;margin:0 auto 8px;background:var(--c);width:var(--w)}
@media(max-width:760px){.anatomy{grid-template-columns:repeat(4,1fr)}.anatomy span:nth-child(4){border-right:0}.anatomy span:nth-child(-n+4){border-bottom:1px solid var(--line)}.spec tbody th{width:42%}.bpc .hero.full{min-height:420px}}