:root{--bg:#f3ead6;--surface:#fbf6ea;--ink:#1f2a33;--muted:#4c5862;--accent:#7a1f24;--accent-ink:#ffffff;--accent2:#4a5d6e;--line:#d9caa8;--hero-ink:#fbf6ea;--r:2px;--maxw:1120px;--measure:68ch;--hf:'IM Fell English', 'Iowan Old Style', Georgia, serif;--bf:'Libre Franklin', 'Segoe 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:400;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: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(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: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)}
.ah{font-size:17px;font-variant-numeric:lining-nums}
.ah h1,.ah h2,.ah h3{letter-spacing:0}
.ah header.site{background:#1f2a33;border-bottom:0;border-top:5px solid #7a1f24}
.ah header.site .wrap{padding-top:16px;padding-bottom:16px}
.ah .brand{color:#f3ead6;font-weight:400;font-size:1.55rem}
.ah nav.main a{color:#e4dccb;font-size:.84rem;text-transform:uppercase;letter-spacing:.12em;font-weight:500}
.ah nav.main a:hover{color:#fff}
.ah nav.main a[aria-current]{border-color:#c9a46a;color:#fff}
.ah .menu-btn{color:#f3ead6;border-color:#5b6873}
.ah .hero.banner,.ah .hero.plain{background:linear-gradient(180deg,#efe3c8,#f3ead6 70%);border-bottom:1px solid var(--line)}
.ah .hero .wrap{padding-top:52px;padding-bottom:44px}
.ah .hero .kicker{font-family:var(--bf);font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:.18em;color:var(--accent);margin:0 0 .9em;display:flex;align-items:center;gap:.8em}
.ah .hero .kicker::before{content:"";width:34px;border-top:2px solid var(--accent)}
.ah .hero h1{color:#1f2a33;max-width:22ch}
.ah .hero .lead{font-size:1.2rem;color:#3a4650;max-width:62ch}
.ah .hero.banner img{border-radius:0;max-height:420px;border:1px solid #c9b48a;outline:6px solid var(--surface);outline-offset:-1px;box-shadow:0 18px 40px rgba(31,42,51,.16)}
.ah .hero.split .wrap{gap:56px}
.ah .hero.split img{border-radius:0;border:1px solid #c9b48a;box-shadow:12px 12px 0 #e2d4b5}
.ah .prose h2{font-size:clamp(1.55rem,3vw,2.15rem);color:#1f2a33;padding-top:.5em;border-top:1px solid var(--line)}
.ah .prose h2::before{content:"\00a7";color:var(--accent);margin-right:.4em;font-size:.85em}
.ah .prose h3{font-family:var(--bf);font-weight:700;font-size:1.05rem;text-transform:uppercase;letter-spacing:.08em;color:var(--accent2)}
.ah .prose a{color:#7a1f24}
.ah .cards{gap:0;border-top:2px solid #1f2a33;border-left:1px solid var(--line)}
.ah .card{border:0;border-right:1px solid var(--line);border-bottom:1px solid var(--line);border-radius:0;background:transparent;padding:22px 22px 24px}
.ah a.card:hover{background:var(--surface)}
.ah a.card:hover h3{text-decoration:underline;text-decoration-thickness:1px}
.ah .card h3{font-family:var(--hf);font-weight:400;font-size:1.35rem;text-transform:none;letter-spacing:0;color:var(--accent);margin-bottom:.3em}
.ah .card .n{display:block;font-size:.72rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--accent2);margin-bottom:.5em}
.ah .callout{border-left:0;border-top:3px double var(--accent);border-bottom:1px solid var(--line);background:var(--surface);border-radius:0;padding:14px 20px}
.ah .callout::before{content:"Study note";display:block;font-size:.74rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin-bottom:.3em}
.ah .callout.date::before{content:"Check the date"}
.ah th{background:#1f2a33;color:#f3ead6;font-family:var(--bf);font-weight:500;font-size:.8rem;letter-spacing:.1em;text-transform:uppercase}
.ah td{border-bottom:1px solid var(--line)}
.ah tbody tr:nth-child(even) td{background:rgba(251,246,234,.7)}
.ah .table-wrap{border:1px solid var(--line);background:var(--surface)}
.ah .table-wrap table{margin:0}
.ah .callout p:last-child{margin-bottom:0}
.ah details{border-radius:0;border-color:var(--line);margin-bottom:.6em}
.ah summary{font-weight:700}
.ah .steps li::before{background:transparent;border:1px solid var(--accent);color:var(--accent);border-radius:0;font-family:var(--hf);font-weight:400;font-size:1.05rem}
.ah .eras{display:flex;flex-wrap:wrap;gap:0;margin:0 0 1.6em;border:1px solid var(--line);background:var(--surface);font-size:.88rem}
.ah .eras span{padding:9px 14px;background:#1f2a33;color:#f3ead6;font-weight:700;letter-spacing:.14em;text-transform:uppercase;font-size:.72rem;display:flex;align-items:center}
.ah .eras a{padding:9px 14px;text-decoration:none;color:var(--ink);border-right:1px solid var(--line)}
.ah .eras a:hover{background:#efe3c8}
.ah .eras a[aria-current]{color:var(--accent);font-weight:700;box-shadow:inset 0 -3px 0 var(--accent)}
.ah .tl{margin:0 0 2em;border-top:2px solid #1f2a33;background:var(--surface);border-bottom:1px solid var(--line)}
.ah .tl figcaption{font-family:var(--hf);font-size:1.25rem;padding:14px 18px 4px;color:#1f2a33}
.ah .tl-scroll{overflow-x:auto;padding:8px 18px 14px}
.ah .tl-scroll:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}
.ah .tl-in{position:relative;min-width:940px;padding-bottom:40px;background-image:linear-gradient(90deg,rgba(74,93,110,.07) 1px,transparent 1px)}
.ah .tl-ev{list-style:none;margin:0;padding:0;position:relative;height:calc(var(--lanes) * 50px + 6px)}
.ah .tl .ev{position:absolute;top:calc(var(--l) * 50px);margin:0;line-height:1.15}
.ah article.prose>h2:has(+ .tl){max-width:none;margin-left:0;margin-right:0}
.ah .tl{font-variant-numeric:lining-nums tabular-nums}
.ah .tl .ev{width:var(--w)}
.ah .tl .ev.r .lb{position:absolute;right:0;top:12px;text-align:right}
.ah .tl .ev.r.pt .lb{right:-4px}
.ah .tl .ev .bar{display:block;height:7px;width:100%;min-width:7px;background:var(--accent2);margin-bottom:5px}
.ah .tl .lb{display:block;white-space:nowrap;font-size:.82rem;font-weight:700;color:var(--ink)}
.ah .tl .lb small{display:block;font-weight:400;font-size:.74rem;color:var(--muted);margin-top:1px}
.ah .tl .lb a{color:var(--accent);text-decoration:none}
.ah .tl .lb a:hover{text-decoration:underline}
.ah .tl .ev.era .bar{background:var(--accent);height:9px}
.ah .tl .ev.pt .bar{width:9px;height:9px;border-radius:50%;background:var(--accent);margin-left:-4px}
.ah .tl-axis{position:absolute;left:0;right:0;bottom:0;height:40px;border-top:2px solid #1f2a33}
.ah .tl .tk{position:absolute;top:0;width:0;height:5px;border-left:1px solid #8a96a0}
.ah .tl .tk.c{height:9px;border-left-color:#1f2a33}
.ah .tl .tk.mj{height:13px;border-left-width:2px}
.ah .tl .tk b{position:absolute;top:15px;left:0;transform:translateX(-50%);font-size:.72rem;font-weight:500;color:var(--muted);white-space:nowrap;letter-spacing:.02em}
.ah .tl .tk:first-child b{transform:none}
.ah .tl .tk:last-child b{transform:translateX(-100%)}
.ah .tl-hint{display:none;font-size:.82rem;color:var(--muted);margin:-1.4em 0 1.6em}
@media(max-width:980px){.ah .tl-hint{display:block}}
@media(max-width:760px){.ah header.site .wrap{padding-top:12px;padding-bottom:12px}.ah .brand{font-size:1.3rem}.ah nav.main a{font-size:.9rem}.ah .hero .wrap{padding-top:34px;padding-bottom:30px}.ah .eras span{width:100%}.ah .eras a{flex:1 1 auto;text-align:center;border-top:1px solid var(--line)}}
.ah footer.site{background:#1f2a33;color:#cfd5da;border-top:5px solid #7a1f24}
.ah footer.site a{color:#f0d9b5}
.ah .page.toc-layout .toc{border-left:1px solid var(--accent);font-size:.9rem}
.ah .page.toc-layout .toc strong{font-family:var(--hf);font-weight:400;font-size:1.1rem;color:var(--accent)}
@media(min-width:1500px){.ah .page.toc-layout{grid-template-columns:250px minmax(0,1fr);gap:64px}.ah .cards{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}}
@media(min-width:1800px){html:has(body.ah){font-size:18px}.ah{font-size:19px}.ah .hero h1{max-width:26ch}.ah .hero.banner img{max-height:520px}}
@media(min-width:2300px){html:has(body.ah){font-size:20px}.ah{font-size:21px}.ah article.prose>:is(p,ul,ol,h2,h3,details,.callout,.table-wrap){max-width:54rem}.ah .page.toc-layout{grid-template-columns:290px minmax(0,1fr)}}