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1.3rem);flex-wrap:wrap}.masthead{display:inline-block;position:relative;text-decoration:none;font-size:3.25rem;line-height:1}.wordmark{font-family:var(--font-display);font-weight:400;font-size:1em;letter-spacing:var(--tr-display);line-height:1}.wordmark{display:block}.masthead-by{position:absolute;left:0;top:3.38rem;display:flex;align-items:center;gap:.4em;font-size:.3em;color:var(--grey-700);line-height:1.15;white-space:nowrap}.masthead-by img{height:1.75em;width:auto;display:block}.site-head nav{display:flex;gap:var(--sp-5);flex-wrap:wrap;align-items:center}.site-head nav a:not(.nav-cta){font-family:var(--font-display);font-size:var(--fs-caption);font-weight:500;letter-spacing:normal;text-decoration:none;color:var(--grey-700)}.site-head nav a.nav-cta{text-decoration:none;color:var(--ink);font-size:var(--fs-caption)}.site-head nav a:hover{color:var(--accent)}.nav-cta{padding:12px 20px}.site-head nav a.nav-cta:hover{color:var(--ink)}.site-foot{background:var(--ink);color:var(--ground);margin-top:var(--sp-10)}main.is-flush+.site-foot{margin-top:0}.foot-grid{display:grid;gap:var(--sp-6);grid-template-columns:2fr 1fr 1fr 1fr;padding-top:var(--sp-8);padding-bottom:var(--sp-7)}.foot-grid h2{font-family:var(--font-text);font-size:var(--fs-micro);font-weight:600;letter-spacing:var(--tr-label);text-transform:uppercase;color:var(--grey-300);margin:0 0 var(--sp-3)}.foot-grid a{display:block;font-size:var(--fs-small);text-decoration:none;color:var(--grey-300);margin-bottom:var(--sp-2)}.foot-grid a:hover{color:var(--accent-cta)}.foot-wordmark{font-family:var(--font-display);font-size:2rem;letter-spacing:var(--tr-display);display:block;line-height:1}.foot-by{font-size:var(--fs-micro);color:var(--grey-300);display:flex;align-items:center;gap:.4em;margin-top:.2em}.foot-logo{height:1.9em;width:auto;display:block;filter:brightness(0) invert(1)}.foot-tag{max-width:var(--measure-short);color:var(--grey-300);font-size:var(--fs-caption);margin:var(--sp-4) 0 0}.foot-legal{display:flex;justify-content:space-between;gap:var(--sp-4);flex-wrap:wrap;padding-bottom:var(--sp-7);font-size:var(--fs-caption);color:var(--grey-300)}.dev-note{color:var(--yellow)}.rubric{display:flex;align-items:center;gap:var(--sp-3);margin:0 0 var(--sp-5)}.rubric-art{flex:none;display:block;color:var(--emerald-mid)}.rubric-art svg{display:block;height:1.55em;aspect-ratio:28.31 / 39}.rubric span{font-family:var(--font-display);font-weight:600;font-size:var(--fs-h4);color:var(--accent-head);letter-spacing:-.01em}.headline{font-family:var(--font-display);font-weight:500;font-size:var(--fs-h1);line-height:var(--lh-tight);letter-spacing:var(--tr-display);margin:0 0 var(--sp-4);max-width:var(--measure)}.standfirst{font-family:var(--font-text);font-weight:600;font-size:var(--fs-lede);color:var(--accent-head);margin:0 0 var(--sp-5);line-height:var(--lh-lede)}.deck{font-size:var(--fs-lede);line-height:var(--lh-lede);max-width:var(--measure);margin:0 0 var(--sp-6);color:var(--grey-700)}.deck b{color:var(--ink);font-weight:600}.prose{max-width:var(--measure-wide)}.prose>p{margin:0 0 var(--sp-4)}.prose a{color:var(--accent)}.rule-top{position:relative}.rule-top:before{content:"";position:absolute;top:0;left:var(--sp-5);right:var(--sp-5);border-top:2px solid var(--ink)}.scroll-hint{display:none;margin:var(--sp-2) 0 0;font-size:var(--fs-caption);color:var(--fg-muted)}@media(max-width:768px){.scroll-hint{display:block}}.sf-hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}.scroll-x{overflow-x:auto;-webkit-overflow-scrolling:touch;background:linear-gradient(to right,var(--bg) 40%,rgb(255 255 255 / 0)) left center,linear-gradient(to left,var(--bg) 40%,rgb(255 255 255 / 0)) right center,linear-gradient(to right,#21212121,#21212100) left center,linear-gradient(to left,#21212121,#21212100) right center;background-repeat:no-repeat;background-size:34px 100%,34px 100%,14px 100%,14px 100%;background-attachment:local,local,scroll,scroll}.scroll-x:focus-visible{outline:3px solid var(--accent);outline-offset:2px}ul[role=list],ol[role=list]{list-style:none}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;border:0;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap}@media(max-width:900px){.foot-grid{grid-template-columns:1fr 1fr}}.nav-toggle{display:none}@media(max-width:780px){.nav-toggle{display:flex;align-items:center;justify-content:center;width:44px;height:44px;flex:none;background:none;border:0;cursor:pointer;padding:0;color:var(--ink)}.nav-bars,.nav-bars:before,.nav-bars:after{content:"";display:block;position:absolute;width:24px;height:2px;background:currentColor;transition:transform .18s ease,opacity .12s ease}.nav-bars{position:relative}.nav-bars:before{transform:translateY(-7px)}.nav-bars:after{transform:translateY(7px)}[aria-expanded=true] .nav-bars{background:transparent}[aria-expanded=true] .nav-bars:before{transform:rotate(45deg)}[aria-expanded=true] .nav-bars:after{transform:rotate(-45deg)}.site-head nav{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;gap:0;background:var(--paper-eggshell);border-top:var(--hairline);padding:var(--sp-2) var(--sp-4) var(--sp-5)}.site-head nav.is-open{display:flex}.site-head nav a:not(.nav-cta){padding:var(--sp-4) 0;border-bottom:var(--hairline);font-size:var(--fs-body)}.nav-cta{position:static;margin-top:var(--sp-4);text-align:center}}@media(max-width:780px){.masthead{font-size:2.25rem}.masthead-by{position:static;margin-top:.1em;font-size:12px}.head-inner{align-items:flex-start;gap:var(--sp-4);padding-top:var(--sp-3);padding-bottom:var(--sp-3)}.site-head nav{gap:var(--sp-4);row-gap:var(--sp-3)}.head-inner{position:relative}}@media(max-width:560px){.foot-grid{grid-template-columns:1fr}.masthead{font-size:2rem}}.fn-ref,a.fn-back{display:inline-block;text-decoration:none;color:var(--accent);font-weight:600;padding:0 .45em;margin:0 -.1em;min-width:24px;text-align:center}.fn-ref sup{font-size:.72em}a.fn-back{padding:.25em .5em}.cards,.iss-list,.quiz-list,.au-grid,.tl-list,.ev,.hero-r,.arc-grid,.ap-list{list-style:none}.review-stamp{background:var(--yellow);color:var(--ink);padding:var(--sp-3) var(--sp-5);font-size:var(--fs-caption);line-height:1.4;text-align:center;border-bottom:2px solid var(--ink);margin:0 calc(var(--sp-4) * -1)}.site-head.over-hero .review-stamp{background:var(--yellow)}.review-stamp b{font-weight:600}.cta-primary,.cta-secondary{display:inline-block;font-family:var(--font-display);font-size:var(--fs-small);font-weight:500;line-height:1.2;padding:16px 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