:root{--bg:#fbf8ee;--surface:#ffffff;--ink:#111111;--muted:#47463f;--accent:#111111;--accent-ink:#ffd23f;--accent2:#ffd23f;--line:#1a1a1a;--hero-ink:#111111;--r:0;--maxw:1140px;--measure:70ch;--hf:'Space Grotesk', system-ui, sans-serif;--bf:'Source Sans 3', 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:700;letter-spacing:-.01em}
h1{font-size:clamp(2rem,5vw,3.6rem);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:var(--maxw);margin:0 auto;padding:0 20px}
.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(0,0,0,.05),rgba(0,0,0,.62))}
.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:max(var(--measure),760px);margin-left:auto;margin-right:auto}
.page.toc-layout article.prose>*{margin-left:0;margin-right:0}
.page.wide article.prose>*{max-width:none}
.cards{display:grid;grid-template-columns:repeat(auto-fill,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)}
.pb{--yel:#ffd23f;--yel-soft:#fff3c2;--rule:#d9d3bd}
.pb a{color:var(--ink);text-decoration-color:#c99a00;text-decoration-thickness:2px}
.pb a:hover{background:var(--yel-soft)}
.pb header.site{background:#111;border-bottom:6px solid var(--yel)}
.pb header.site .brand,.pb nav.main a{color:#fff}
.pb header.site .brand span{color:var(--yel);letter-spacing:-.02em}
.pb nav.main a{font-family:var(--hf);font-weight:500;font-size:.92rem}
.pb nav.main a:hover{background:none;color:var(--yel)}
.pb nav.main a[aria-current]{border-color:var(--yel);color:var(--yel)}
.pb .menu-btn{color:#fff;border-color:#555}
.pb .hero.plain{background:var(--yel);border-bottom:2px solid #111;background-image:repeating-linear-gradient(0deg,transparent 0 31px,rgba(17,17,17,.07) 31px 32px)}
.pb .hero .kicker{font-family:var(--hf);text-transform:uppercase;letter-spacing:.14em;font-size:.78rem;color:#111;display:inline-block;background:#111;color:var(--yel);padding:3px 9px;margin-bottom:16px}
.pb .hero .lead{color:#1d1c18}
.pb .hero.banner{background:var(--bg);border-bottom:2px solid #111}
.pb .hero.banner img,.pb .hero.split img{border:2px solid #111;box-shadow:8px 8px 0 var(--yel)}
.pb.p-index .hero.plain .wrap{display:grid;grid-template-columns:minmax(0,1fr) 320px;column-gap:48px;align-items:start}
.pb.p-index .hero.plain .wrap>*{grid-column:1}
.pb.p-index .hero.plain .book{grid-column:2;grid-row:1/span 3;align-self:center}
@media(max-width:820px){.pb.p-index .hero.plain .wrap{grid-template-columns:1fr}.pb.p-index .hero.plain .book{grid-column:1;grid-row:auto;margin-top:24px;max-width:300px}}
.book{position:relative;padding-right:26px}
.book .cover{position:relative;background:#111;padding:14px 14px 14px 26px;box-shadow:10px 10px 0 rgba(17,17,17,.18);transform:rotate(-2deg)}
.book .spine{position:absolute;left:0;top:0;bottom:0;width:14px;background:repeating-linear-gradient(180deg,#333 0 6px,#111 6px 12px)}
.book .sheet{background:#fffdf3;padding:14px 16px 16px;font-family:var(--hf);font-size:.84rem;line-height:1.3;color:#111}
.book .bh{margin:0 0 8px;font-weight:700;text-transform:uppercase;letter-spacing:.2em;font-size:.72rem;border-bottom:2px solid #111;padding-bottom:6px}
.book .row{display:flex;align-items:baseline;gap:6px;padding:4px 0}
.book .row b{font-weight:500}
.book .row i{flex:1;border-bottom:2px dotted #888;transform:translateY(-3px)}
.book .row em{font-style:normal;font-weight:700;background:var(--yel);padding:0 6px}
.book .num{display:block;margin-top:10px;font-family:ui-monospace,Consolas,monospace;letter-spacing:.1em;font-size:1.1rem;text-align:right}
.book .thumb{position:absolute;right:-24px;width:24px;height:30px;background:var(--yel);border:2px solid #111;border-left:0;font:700 .75rem/26px var(--hf);text-align:center;color:#111}
.book .t1{top:24px}.book .t2{top:62px}.book .t3{top:100px}.book .t4{top:138px}
.az{display:flex;flex-wrap:wrap;gap:3px;margin:0 0 2em;padding:0 0 0;border-bottom:3px solid #111}
.az .tab{flex:1 0 26px;min-width:26px;text-align:center;font:700 .82rem/1 var(--hf);padding:9px 0 7px;background:#ece6cf;color:#9a937c;border:1px solid #cfc7aa;border-bottom:0;text-decoration:none}
.az a.tab.on{background:var(--yel);color:#111;border-color:#111}
.az a.tab.on:hover{background:#111;color:var(--yel)}
.az a.tab.cur{background:#111;color:var(--yel);transform:translateY(-4px)}
.pb .card{border:2px solid #111;box-shadow:5px 5px 0 #111;transition:transform .12s,box-shadow .12s}
.pb a.card:hover{background:var(--surface);transform:translate(-2px,-2px);box-shadow:7px 7px 0 var(--yel),7px 7px 0 1px #111}
.pb .card h3{font-size:1.08rem;display:flex;align-items:center;gap:10px}
.pb .card h3 .ltr{flex:none;width:28px;height:28px;display:grid;place-items:center;background:var(--yel);border:2px solid #111;font-size:.9rem}
.pb h2{border-top:2px solid #111;padding-top:.55em}
.pb h2::before{content:"";display:inline-block;width:14px;height:14px;background:var(--yel);border:2px solid #111;margin-right:12px;vertical-align:.05em}
.pb .callout{background:var(--yel-soft);border-left:8px solid #111;border-radius:0}
.pb th{background:#111;color:#fff;font-weight:500}
.pb td{border-bottom:1px solid var(--rule)}
.pb tbody tr:nth-child(even) td{background:#fffbea}
.pb .table-wrap{border:2px solid #111}
.pb .aff{border:2px dashed #111;background:var(--yel-soft)}
.pb .disclosure{border:1px solid var(--rule);background:#fff}
.pb details{border:2px solid #111;margin-bottom:10px}
.pb dl dt{background:var(--yel);display:inline-block;padding:0 6px;margin-top:1.2em}
.pb footer.site{background:#111;color:#cfcab6;border-top:6px solid var(--yel)}
.pb footer.site a{color:#fff}
.pb footer.site a:hover{background:none;color:var(--yel)}
.chk{border:2px solid #111;background:#fff;padding:18px;box-shadow:6px 6px 0 var(--yel);margin:0 0 1.6em}
.chk label{display:block;font-family:var(--hf);font-weight:700;margin-bottom:6px}
.chk input{width:100%;font:1.3rem ui-monospace,Consolas,monospace;letter-spacing:.06em;padding:10px 12px;border:2px solid #111;background:#fffdf3;color:#111}
.chk .out{font:700 1.5rem/1.2 ui-monospace,Consolas,monospace;margin:14px 0 4px;letter-spacing:.05em}
.chk .parts{display:flex;gap:6px;flex-wrap:wrap;margin:10px 0}
.chk .parts span{border:2px solid #111;padding:6px 10px;font:.85rem var(--hf);background:var(--yel-soft)}
.chk .parts b{display:block;font:700 1.15rem ui-monospace,Consolas,monospace}
.chk ul{margin:.6em 0 0}
@media print{.az,.pb header.site,.pb footer.site{display:none}}