.iso{--anatomy-page:#0b0b0b;--anatomy-card:#131313;--anatomy-text:#a3a3a3;--anatomy-strong:#e6e6e6;--anatomy-muted:#6e6e6e;--anatomy-paper:#131313;--anatomy-face:#1b1b1b;--anatomy-top:#1c1c1c;--anatomy-shade-0:#0f0f0f;--anatomy-shade-1:#121212;--anatomy-shade-2:#151515;--anatomy-shade-3:#181818;--anatomy-lit-top:#262626;--anatomy-lit-shade:#1d1d1d;--anatomy-hi:#d4d4d4;--anatomy-mid:#6a6a6a;--anatomy-lo:#3e3e3e;--anatomy-faint:#2a2a2a;--anatomy-lit:#ffffff;--anatomy-halo:#050505;--anatomy-halo-opacity:.9;--anatomy-dot:#e6e6e6;--anatomy-red:#ff6b6b;--anatomy-green:#6be0a0;--anatomy-blue:#6b9bff;--anatomy-weight:.6px;--anatomy-ease:cubic-bezier(.32,.72,0,1);--anatomy-mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;--anatomy-lift:inset 0 1px 0 0 #ffffff0a,inset 0 0 0 1px #ffffff06,0 0 0 1px #00000026,0 1px 1px -.5px #00000014,0 3px 3px -1.5px #00000014,0 6px 6px -3px #00000014,0 12px 12px -6px #00000014}.iso[data-theme=light]{--anatomy-page:#f2f2ef;--anatomy-card:#fbfbfa;--anatomy-text:#57575a;--anatomy-strong:#18181a;--anatomy-muted:#8c8c90;--anatomy-paper:#fbfbfa;--anatomy-face:#ffffff;--anatomy-top:#ffffff;--anatomy-shade-0:#dcdcd9;--anatomy-shade-1:#e5e5e2;--anatomy-shade-2:#ededea;--anatomy-shade-3:#f4f4f1;--anatomy-lit-top:#ffffff;--anatomy-lit-shade:#eeeeeb;--anatomy-hi:#26262a;--anatomy-mid:#8a8a8f;--anatomy-lo:#b4b4b8;--anatomy-faint:#d4d4d6;--anatomy-lit:#000000;--anatomy-halo:#8a8a80;--anatomy-halo-opacity:.32;--anatomy-dot:#3a3a3e;--anatomy-red:#e5484d;--anatomy-green:#30a46c;--anatomy-blue:#3e63dd;--anatomy-lift:inset 0 1px 0 0 #ffffff,0 0 0 1px #0000000f,0 1px 1px -.5px #0000000a,0 3px 3px -1.5px #0000000a,0 6px 6px -3px #0000000a,0 12px 12px -6px #0000000a}.iso-svg{display:block;width:100%;height:auto;overflow:visible}.iso-svg path,.iso-svg circle{vector-effect:non-scaling-stroke}.iso-fill{fill:var(--anatomy-paper);stroke:none}.iso-solid[data-lit]>.iso-fill{fill:var(--anatomy-face)}.iso-shade,.iso-top{stroke:none}.iso-shade[data-shade="0"]{fill:var(--anatomy-shade-0)}.iso-shade[data-shade="1"]{fill:var(--anatomy-shade-1)}.iso-shade[data-shade="2"]{fill:var(--anatomy-shade-2)}.iso-shade[data-shade="3"]{fill:var(--anatomy-shade-3)}.iso-top{fill:var(--anatomy-top)}.iso-solid[data-lit]>.iso-top{fill:var(--anatomy-lit-top)}.iso-solid[data-lit]>.iso-shade{fill:var(--anatomy-lit-shade)}.iso-solid[data-seamless]>.iso-shade,.iso-solid[data-seamless]>.iso-top{stroke-width:.4;stroke-linejoin:round}.iso-solid[data-seamless]>.iso-shade[data-shade="0"]{stroke:var(--anatomy-shade-0)}.iso-solid[data-seamless]>.iso-shade[data-shade="1"]{stroke:var(--anatomy-shade-1)}.iso-solid[data-seamless]>.iso-shade[data-shade="2"]{stroke:var(--anatomy-shade-2)}.iso-solid[data-seamless]>.iso-shade[data-shade="3"]{stroke:var(--anatomy-shade-3)}.iso-solid[data-seamless]>.iso-top{stroke:var(--anatomy-top)}.iso-solid[data-seamless][data-lit]>.iso-top{stroke:var(--anatomy-lit-top)}.iso-solid[data-seamless][data-lit]>.iso-shade{stroke:var(--anatomy-lit-shade)}.iso-solid[data-lit]>.iso-edge{stroke:var(--anatomy-lit)}.iso-halo{fill:var(--anatomy-halo);stroke:none;filter:blur(9px);opacity:var(--anatomy-halo-opacity);transform:translateY(3px)}.iso-line{fill:none;stroke:var(--anatomy-lo);stroke-width:var(--anatomy-weight);stroke-linecap:round;stroke-linejoin:round}.iso-line[data-tone=hi]{stroke:var(--anatomy-hi)}.iso-line[data-tone=mid]{stroke:var(--anatomy-mid)}.iso-line[data-tone=lo]{stroke:var(--anatomy-lo)}.iso-line[data-tone=faint]{stroke:var(--anatomy-faint)}.iso-line[data-tone=lit]{stroke:var(--anatomy-lit)}.iso-line[data-tone=red]{stroke:var(--anatomy-red)}.iso-line[data-tone=green]{stroke:var(--anatomy-green)}.iso-line[data-tone=blue]{stroke:var(--anatomy-blue)}.iso-line[data-dotted]{stroke-dasharray:.01 3.5;stroke-width:1}.iso-line[data-dashed]{stroke-dasharray:3 3}.iso-line[data-flow]{stroke-dasharray:2 6}.iso-wire-end{fill:var(--anatomy-paper);stroke:var(--anatomy-lo);stroke-width:var(--anatomy-weight)}.iso-wire[data-tone=hi] .iso-wire-end{stroke:var(--anatomy-hi)}.iso-wire[data-tone=mid] .iso-wire-end{stroke:var(--anatomy-mid)}.iso-wire[data-tone=faint] .iso-wire-end{stroke:var(--anatomy-faint)}.iso-wire[data-tone=lit] .iso-wire-end{stroke:var(--anatomy-lit)}.iso-dots circle{fill:var(--anatomy-dot);stroke:none;opacity:.32}.iso-dots[data-tone=hi] circle{opacity:.85}.iso-dots[data-tone=mid] circle{opacity:.45}.iso-dots[data-tone=lo] circle{opacity:.22}.iso-dots[data-tone=faint] circle{opacity:.12}.iso-face-text{fill:var(--anatomy-mid);font-family:var(--anatomy-mono);letter-spacing:.04em}.iso-face-text[data-tone=hi]{fill:var(--anatomy-hi)}.iso-face-text[data-tone=lo]{fill:var(--anatomy-lo)}.iso-face-text[data-tone=faint]{fill:var(--anatomy-faint)}.tb-body{fill:var(--anatomy-shade-2);stroke:none}.tb-shine{fill:var(--anatomy-top);stroke:none}.tb-shade{fill:var(--anatomy-shade-0);stroke:none}.tb-ring{fill:none;stroke:var(--anatomy-lo);stroke-width:.45;stroke-linecap:butt;stroke-linejoin:round}.tb-ring[data-tone=mid]{stroke:var(--anatomy-mid)}.tb-ring[data-tone=faint]{stroke:var(--anatomy-faint)}.tb-ring[data-tone=hi]{stroke:var(--anatomy-hi)}@keyframes iso-flow{to{stroke-dashoffset:-32}}@keyframes iso-pulse{0%,to{opacity:.18}12%{opacity:1}40%{opacity:.18}}.iso-line[data-flow]{animation:iso-flow 1.6s linear infinite}.iso-dots circle[data-pulse]{animation:iso-pulse 1.6s steps(1,end) infinite;animation-delay:var(--pulse-at,0ms)}.iso-figure{margin:32px 0 36px}.iso-plate{position:relative;padding:52px 24px;border-radius:0;background:var(--anatomy-card);box-shadow:0 0 0 1px var(--anatomy-mid);--anatomy-paper:var(--anatomy-card)}.iso-plate-corners{position:absolute;inset:18px 20px;pointer-events:none}.iso-plate-corner{position:absolute;color:var(--anatomy-muted);font-family:var(--anatomy-mono);font-size:10.5px;line-height:1;letter-spacing:.04em;white-space:nowrap}.iso-plate-corner[data-corner=fig]{top:0;left:0;color:var(--anatomy-text)}.iso-plate-corner[data-corner=title]{top:0;right:0;text-transform:uppercase;letter-spacing:.1em}.iso-plate-corner[data-corner=hint]{bottom:0;left:0;text-transform:uppercase;letter-spacing:.1em}.iso-plate-corner[data-corner=readout]{right:0;bottom:0;color:var(--anatomy-text);font-variant-numeric:tabular-nums}.iso-plate .iso-svg{margin:0 auto}.iso-legend{display:grid;gap:8px;margin-top:12px;color:var(--anatomy-muted);font-size:13px;line-height:1.55}.iso-keys{display:flex;flex-wrap:wrap;gap:6px 18px}.iso-key{display:inline-flex;align-items:center;gap:7px}.iso-swatch{width:16px;height:10px;flex:none;overflow:visible}.iso-swatch path{fill:none;stroke:var(--anatomy-hi);stroke-width:1;vector-effect:non-scaling-stroke;stroke-linejoin:round;stroke-linecap:round}.iso-swatch[data-mark=raised] path,.iso-swatch[data-mark=flat] path{stroke:var(--anatomy-mid)}.iso-swatch[data-mark=lit] path{stroke:var(--anatomy-lit)}.iso-swatch[data-mark=dim] path{stroke:var(--anatomy-lo)}.iso-swatch[data-mark=dotted] path{stroke-dasharray:.01 3;stroke-width:1.4}.iso-swatch[data-mark=dashed] path{stroke-dasharray:3 2.5}.iso-swatch[data-mark=red] path{stroke:var(--anatomy-red)}.iso-swatch[data-mark=green] path{stroke:var(--anatomy-green)}.iso-swatch[data-mark=blue] path{stroke:var(--anatomy-blue)}.iso-swatch-crease{stroke:var(--anatomy-lo)!important}@media(max-width:560px){.iso-plate{padding:48px 12px 70px}.iso-plate-corner[data-corner=hint]{bottom:18px}}@media(prefers-reduced-motion:reduce){.iso-line[data-flow],.iso-dots circle[data-pulse]{animation:none}}:root{--paper:#eeeae2;--paper-alt:#e3ded3;--ink:#242824;--muted:#686a60;--copper:#934126;--copper-light:#d18a65;--line:#24282430;--display:"Cormorant Garamond",Georgia,serif;--body:"Manrope",Arial,sans-serif;--mono:"Courier New",monospace;--ease:cubic-bezier(.22,.61,.36,1)}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.7 var(--body);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit;cursor:pointer}button,a{-webkit-tap-highlight-color:transparent}button{border:0;background:none}button:focus-visible,a:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--copper-light);outline-offset:5px}button:disabled{cursor:default}::selection{background:#c98e68;color:var(--ink)}.wrap{width:min(1320px,calc(100% - 100px));margin:auto}.section{padding-block:100px}h1,h2,h3,p,figure{margin:0}h1,h2,h3{font-weight:400}h1,h2{font-family:var(--display);line-height:.98;letter-spacing:-.045em}h2{font-size:clamp(48px,5.2vw,76px)}em{font-weight:400;color:var(--copper)}.eyebrow,.section-meta,.object-index,.object-label,.material-label,.board-topline,.hero-bottom,.figure-hint,.location,.timeline-date,.board-legend,.exhibit-footnote,.art-credit,.principles>div>span,.tactic-explanation>span,.tactic-note,.footer-bottom,.brand-sub{font:10px/1.6 var(--mono);letter-spacing:.12em}.eyebrow{font-size:11px;letter-spacing:.16em}.header{height:112px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:28px}.brand{display:flex;align-items:center;gap:14px;font-size:13px;line-height:1.5;letter-spacing:.14em;font-weight:600;white-space:nowrap}.brand-sub{display:block;font-size:8px;letter-spacing:.22em;opacity:.65;margin-top:3px}.header nav{display:flex;gap:28px;font-size:11px}.header nav a{padding:14px 0;position:relative}.header nav a:after{content:"";position:absolute;bottom:8px;left:0;width:0;height:1px;background:var(--copper);transition:width .25s}.header nav a:hover:after{width:100%}.nav-cta{font-size:11px;border-bottom:1px solid var(--ink);padding:10px 0}.nav-cta span{margin-left:24px}.menu-toggle{display:none}.hero{position:relative;padding-top:90px;display:grid;grid-template-columns:.92fr 1.15fr;min-height:730px;align-items:center}.hero-copy{position:relative;z-index:2;align-self:start;padding-bottom:60px}.hero .eyebrow{font-size:9px;display:flex;align-items:center;gap:12px;white-space:nowrap}.little-line{display:inline-block;width:27px;height:1px;background:var(--copper)}h1{font-size:clamp(64px,6.8vw,98px);margin:27px 0}h1 em{white-space:nowrap}.hero-description{color:var(--muted);font-size:13px;line-height:1.95;margin-bottom:29px}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:38px;min-height:51px;padding:15px 23px;font-size:11px;transition:background .25s,transform .25s}.button:hover{transform:translateY(-2px)}.button span{font-size:18px;line-height:1}.primary{background:var(--ink);color:var(--paper)}.primary:hover{background:#454a3f}.hero-caption{display:flex;align-items:center;gap:13px;margin-top:43px}.edition-mark{font:38px/1 var(--display);color:var(--copper)}.hero-caption p{font-size:10px;line-height:1.7;color:var(--muted)}.hero-caption strong{color:var(--ink);font-weight:500}.hero-figure{align-self:start;position:relative;margin-top:8px;margin-left:-48px;min-width:0}.object-index{display:flex;justify-content:space-between;padding:0 20px 10px;color:var(--muted);font-size:8px}.board-stage{perspective:1000px;min-height:370px;touch-action:pan-y}.board-stage>svg{width:112%;max-width:none;margin-left:-5%;transform:rotateX(var(--tilt-x,0deg)) rotateY(var(--tilt-y,0deg));transition:transform .5s var(--ease);transform-origin:center;filter:drop-shadow(0 20px 18px #28251817)}.hero-figure figcaption{display:flex;align-items:center;justify-content:space-between;font-size:9px;color:var(--muted);margin-top:-12px;border-top:1px solid var(--line);padding:13px 20px;gap:12px}.small-dot{display:inline-block;width:5px;height:5px;border-radius:50%;background:var(--copper);margin-right:7px;vertical-align:middle}.view-controls{display:flex;gap:4px}.view-controls button{width:34px;height:34px;font-size:16px;border:1px solid transparent;transition:border-color .2s}.view-controls button.active,.view-controls button:hover{border-color:var(--line)}.figure-hint{font-size:8px}.hero-bottom{grid-column:1/-1;display:flex;justify-content:space-between;align-items:center;padding:21px 0 26px;font-size:8px;border-top:1px solid var(--line);letter-spacing:.14em}.hero-bottom a{display:flex;gap:30px;align-items:center}.hero-bottom a span{font-size:17px}.hero-bottom>span{opacity:.6}.manifesto{background:var(--paper-alt)}.manifesto-inner{min-height:145px;display:flex;align-items:center;justify-content:space-between;gap:30px}.manifesto-inner>span:first-child{font:9px var(--mono);letter-spacing:.14em}.manifesto p{font:24px/1.2 var(--display);letter-spacing:-.02em}.manifesto-star{font-size:53px;color:var(--copper);line-height:1}.section-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:58px}.section-meta{font-size:9px;color:var(--muted)}.origins-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:100px}.section-intro>p{max-width:340px;color:var(--muted);font-size:13px;margin-top:28px}.text-link{display:inline-flex;gap:48px;align-items:center;font-size:11px;border-bottom:1px solid var(--ink);padding:10px 0;margin-top:15px}.history-art{position:relative;width:240px;height:180px;margin-top:42px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;overflow:hidden}.history-art>span:first-child{font:48px Georgia;color:var(--copper);z-index:1}.history-grid{position:absolute;inset:0;opacity:.05;background:repeating-conic-gradient(var(--ink) 0 25%,transparent 0 50%) 0/60px 60px}.history-art-caption{position:absolute;bottom:13px;font:7px var(--mono);letter-spacing:.1em}.timeline{padding:0;list-style:none;margin:0}.timeline li{display:grid;grid-template-columns:120px 1fr;gap:18px;border-top:1px solid var(--line);padding:24px 0}.timeline li:last-child{border-bottom:1px solid var(--line)}.timeline-date{font-size:10px;color:var(--copper);letter-spacing:0}.location{font-size:8px;color:var(--muted)}.timeline h3{font:27px/1.2 var(--display);margin:8px 0}.timeline p{font-size:11px;color:var(--muted);line-height:1.9;max-width:320px}.dark{background:var(--ink);color:var(--paper);--line:#eeeae230;--muted:#b8b9aa}.dark em{color:var(--copper-light)}.dark .section-meta{color:#a9ab9d}.anatomy-heading,.legends-intro{display:flex;align-items:end;justify-content:space-between;gap:30px}.anatomy-heading>p,.legends-intro>p{color:var(--muted);font-size:12px;line-height:1.9;margin-bottom:8px}.piece-tabs{display:grid;grid-template-columns:repeat(6,1fr);border-bottom:1px solid var(--line);margin-top:48px}.piece-tabs button{min-height:72px;font-size:11px;color:#b8b9aa;border-bottom:2px solid transparent;display:flex;align-items:center;justify-content:center;gap:11px}.piece-tabs button span{font-family:Georgia,serif;font-size:28px}.piece-tabs button:hover{background:#ffffff06}.piece-tabs button.selected{color:var(--copper-light);border-color:var(--copper-light)}.piece-exhibit{display:grid;grid-template-columns:.9fr 1fr 1fr;gap:48px;padding-top:40px;align-items:center}.piece-object{min-height:340px;display:flex;flex-direction:column;align-items:center;justify-content:center;border-right:1px solid var(--line);padding-right:35px}.object-label,.material-label{font-size:8px;letter-spacing:.13em;color:#b8b9aa}.object-label{align-self:start}.piece-object #piece-visual{width:100%;max-width:260px;filter:drop-shadow(0 22px 18px #0005)}.material-label{margin-top:10px;font-size:7px}.piece-info .eyebrow{color:var(--copper-light);font-size:9px}.piece-info h3{font:39px/1.06 var(--display);letter-spacing:-.02em;margin:15px 0 22px;max-width:280px}.piece-info p{font-size:11px;color:var(--muted)}.piece-info .piece-rule{color:var(--paper);margin-bottom:12px}.piece-info .piece-note{font-size:9px;border-top:1px solid var(--line);padding-top:17px;margin-top:20px}.board-topline{display:flex;justify-content:space-between;align-items:center;font-size:8px;letter-spacing:.08em;margin-bottom:10px}.board-topline button{font:9px var(--mono);min-height:30px;text-decoration:underline;text-underline-offset:3px}.flat-board{display:grid;grid-template-columns:repeat(8,1fr);aspect-ratio:1;border:5px solid #a09881;box-shadow:0 8px #141914,0 14px 25px #0002}.square{aspect-ratio:1;position:relative;padding:0;display:flex;align-items:center;justify-content:center;background:#ddd4bf;border-radius:0;color:#222822}.square.dark-square{background:#727c65}.square .coordinate{position:absolute;bottom:2px;left:3px;font:6px var(--mono);opacity:.8}.square .chess-glyph{font:clamp(20px,2.2vw,35px) Georgia,"DejaVu Sans",serif;line-height:1;z-index:2;filter:drop-shadow(0 1px 0 #fff8)}.square.marked:after{content:"";width:8px;height:8px;border-radius:50%;background:#9d482a;opacity:.85}.square.capture:after{content:"";position:absolute;inset:5px;border:1px dashed #9d482a;border-radius:50%}.square.current{box-shadow:inset 0 0 0 2px #ab5432}.square:not(:disabled):hover{box-shadow:inset 0 0 0 2px #a54a2e}.square:focus-visible{outline:2px solid #a54a2e;outline-offset:-3px;z-index:3}.board-instruction{font-size:9px;color:var(--muted);margin:14px 0 7px}.board-legend{display:flex;gap:12px;font-size:7px;letter-spacing:0}.board-legend i{display:inline-block;width:5px;height:5px;background:var(--copper-light);border-radius:50%;margin-right:5px}.exhibit-footnote{font-size:8px;letter-spacing:.02em;color:var(--muted);border-top:1px solid var(--line);padding-top:22px;margin-top:35px}.legend-list{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin-top:45px}.portrait{position:relative;aspect-ratio:1.15;overflow:hidden;background:#d6d0c3;display:flex;justify-content:center;align-items:center;isolation:isolate}.portrait-initial{font:140px/.8 var(--display);color:#eeeae2;letter-spacing:-.14em;padding-right:.1em;position:relative;z-index:1;transition:transform .8s var(--ease)}.portrait-board{position:absolute;width:70%;height:130%;transform:rotate(35deg);background:repeating-conic-gradient(#242824 0 25%,transparent 0 50%) 0/90px 90px;opacity:.1}.portrait-date{position:absolute;bottom:19px;left:20px;font:8px var(--mono);letter-spacing:.15em}.portrait-kasparov{background:#696e60}.portrait-polgar{background:#b6856b}.portrait-carlsen{background:#a6aa99}.legend:hover .portrait-initial{transform:translateY(-8px)}.legend-caption{padding-top:23px}.legend-caption .eyebrow{font-size:8px;color:var(--muted)}.legend h3{font:34px/1.2 var(--display);letter-spacing:-.02em;display:flex;justify-content:space-between;margin:10px 0}.legend h3 span{font:18px var(--body);padding-top:5px}.legend-caption>p{font:italic 19px var(--display);color:var(--copper)}.legend-caption .legend-detail{font:11px/1.9 var(--body);color:var(--muted);margin-top:15px;max-width:330px}.art-credit{font-size:8px;letter-spacing:0;color:var(--muted);margin-top:28px}.strategy-grid{display:grid;grid-template-columns:1fr 1fr;gap:130px;align-items:center}.strategy-copy>p:not(.eyebrow):not(.tactic-note){font-size:12px;color:var(--muted);max-width:365px;line-height:1.9;margin-top:20px}.strategy-topic{color:var(--copper-light);margin-top:30px;font-size:9px}.tactic-explanation{margin-top:28px;border-left:1px solid var(--copper-light);padding-left:18px;min-height:88px}.tactic-explanation>span{font-size:8px;color:var(--copper-light)}.tactic-explanation p{font-size:11px;max-width:340px;margin-top:6px;color:var(--muted)}.strategy-actions{display:flex;gap:12px;margin-top:22px}.copper{background:#bf7853;color:#141914}.copper:hover{background:#d18a65}.reset-tactic{border:1px solid var(--line);width:51px;font-size:21px}.tactic-note{font-size:8px;color:var(--muted);letter-spacing:0;margin-top:17px}.tactic-figure{width:100%;max-width:430px;justify-self:end}.tactic-board{border-width:13px}.tactic-board .chess-glyph{font-size:43px}.tactic-board .coordinate{font-size:8px}.tactic-board .square.highlight{background:#bd8057}.tactic-figure figcaption{font:9px var(--mono);padding-top:24px;color:var(--muted)}.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;margin-top:80px;padding-top:29px;border-top:1px solid var(--line)}.principles>div>span{font-size:8px;color:var(--copper-light)}.principles h3{font:26px/1.2 var(--display);margin:15px 0}.principles p{font-size:10px;max-width:300px;color:var(--muted)}.digital-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:100px}.digital h2{font-size:56px}.digital-grid>div>p{font-size:12px;max-width:430px;color:var(--muted);margin-top:26px;line-height:1.9}.resource-list a{display:flex;gap:20px;align-items:center;padding:25px 0;border-top:1px solid var(--line)}.resource-list a:last-child{border-bottom:1px solid var(--line)}.resource-list a>span{font:9px var(--mono);color:var(--copper)}.resource-list a>span:last-child{font-size:20px;margin-left:auto}.resource-list h3{font:25px/1.1 var(--display);margin-bottom:7px}.resource-list p{font-size:10px;color:var(--muted);max-width:300px}.resource-list a:hover h3{color:var(--copper)}.final-cta{background:var(--paper-alt);overflow:hidden}.final-inner{position:relative;text-align:center;padding:95px 0 105px}.final-inner .eyebrow{font-size:8px;margin-bottom:30px}.final-inner h2{font-size:66px;line-height:1.05}.final-inner .button{margin-top:30px}.closing-knight{position:absolute;right:-20px;bottom:-25px;font:300px/.8 Georgia;opacity:.07;pointer-events:none}.footer{padding-top:55px;padding-bottom:25px}.footer-top{display:flex;justify-content:space-between;gap:30px;align-items:start;padding-bottom:45px}.footer-top>.brand{display:block;font-size:12px}.footer-top>p{font:21px/1.2 var(--display)}.footer-top nav{display:grid;grid-template-columns:repeat(2,1fr);gap:8px 40px;font-size:10px}.back-top{font-size:9px}.footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:22px;border-top:1px solid var(--line);font-size:7px;letter-spacing:.02em;color:var(--muted)}.footer-bottom button{font:inherit;text-decoration:underline;text-underline-offset:4px}.footer-bottom>span:last-child{letter-spacing:.1em}#credits{padding-top:25px;font-size:10px;max-width:850px;color:var(--muted)}#credits p+p{margin-top:10px}#credits a{text-decoration:underline}.skip{position:fixed;top:10px;left:10px;z-index:20;background:var(--ink);color:#fff;padding:12px;transform:translateY(-200%)}.skip:focus{transform:translateY(0)}.noscript-note{padding:20px;text-align:center;background:var(--paper-alt);font-size:12px}.iso .mat-ivory{--anatomy-paper:#d1c8b3;--anatomy-top:#f4eedf;--anatomy-shade-0:#9d927b;--anatomy-shade-1:#b6aa92;--anatomy-shade-2:#d3c8ae;--anatomy-shade-3:#e7ddc5;--anatomy-hi:#9c8c71;--anatomy-lo:#aa9a7d;--anatomy-faint:#c9bda3}.iso .mat-ebony{--anatomy-paper:#292e28;--anatomy-top:#5e6657;--anatomy-shade-0:#151c18;--anatomy-shade-1:#232c23;--anatomy-shade-2:#333c2f;--anatomy-shade-3:#485141;--anatomy-lo:#222b21;--anatomy-faint:#4f5749}.iso .mat-wood{--anatomy-paper:#654936;--anatomy-top:#a0825c;--anatomy-shade-0:#493526;--anatomy-shade-1:#624933;--anatomy-shade-2:#795d40;--anatomy-shade-3:#927552;--anatomy-lo:#5c4631;--anatomy-faint:#b4946b}.iso .mat-tile-light{--anatomy-paper:#dcd0b8;--anatomy-top:#dcd0b8;--anatomy-shade-0:#cbbd9f;--anatomy-shade-1:#cbbd9f;--anatomy-shade-2:#cbbd9f;--anatomy-shade-3:#cbbd9f;--anatomy-lo:#bdae91;--anatomy-faint:#dcd0b8}.iso .mat-tile-dark{--anatomy-paper:#59664e;--anatomy-top:#59664e;--anatomy-shade-0:#414d38;--anatomy-shade-1:#414d38;--anatomy-shade-2:#414d38;--anatomy-shade-3:#414d38;--anatomy-lo:#4d5942;--anatomy-faint:#59664e}.iso .mat-copper{--anatomy-paper:#ba8c5a;--anatomy-top:#e0bb84;--anatomy-shade-0:#795433;--anatomy-shade-1:#a47c4e;--anatomy-shade-2:#b89560;--anatomy-shade-3:#d0ae79;--anatomy-lo:#9d784c;--anatomy-faint:#d0ae79}.hero-board{--anatomy-weight:.28px}.engraving{font:6px var(--mono);fill:#e5ceb0;text-anchor:middle}@media(min-width:1550px){.hero{min-height:800px;padding-top:110px}h1{font-size:108px}.hero-figure{margin-top:-15px}}@media(max-width:1100px){.wrap{width:calc(100% - 64px)}.header{height:94px}.header nav{gap:18px}.nav-cta{display:none}.hero{padding-top:65px;min-height:640px;grid-template-columns:1fr 1.05fr}.hero-figure{margin-left:-50px;margin-top:65px}h1{font-size:76px}.hero .eyebrow{font-size:7px}.hero-description{font-size:12px}.object-index{font-size:6px}.hero-figure figcaption{padding-inline:0}.figure-hint{display:none}.origins-grid{gap:55px}.piece-exhibit{gap:24px;grid-template-columns:.8fr 1fr 1fr}.piece-info h3{font-size:31px}.piece-object{padding-right:18px}.strategy-grid{gap:65px}.digital-grid{gap:55px}.digital h2{font-size:49px}.tactic-board .chess-glyph{font-size:34px}.hero-bottom>span{font-size:6px}.legend h3{font-size:29px}}@media(max-width:760px){.wrap{width:calc(100% - 44px)}.section{padding-block:66px}.header{height:85px;position:relative;z-index:5}.brand{font-size:11px;gap:10px}.brand-sub{font-size:7px}.brand svg{width:21px}.menu-toggle{display:flex;align-items:center;gap:20px;font-size:11px;min-height:44px}.menu-toggle span{font-size:23px}.header nav{display:none;position:absolute;left:-22px;right:-22px;top:84px;background:var(--paper);padding:15px 22px 26px;border-bottom:1px solid var(--line);box-shadow:0 15px 20px #2428240a}.header nav.open{display:grid;gap:0}.header nav a{font-size:14px;padding:13px 0}.hero{display:flex;flex-direction:column;padding-top:43px;align-items:stretch;min-height:0}.hero-copy{padding-bottom:0}.hero .eyebrow{font-size:7px;letter-spacing:.1em;gap:8px}.little-line{width:18px}h1{font-size:clamp(60px,10.8vw,84px);line-height:.96;margin:25px 0 23px}.hero-description{font-size:12px;line-height:1.9}.hero .button{min-height:49px;font-size:10px}.hero-caption{position:absolute;right:0;bottom:3px;gap:8px;margin:0}.edition-mark{font-size:28px}.hero-caption p{font-size:7px}.hero-figure{margin:35px -10px 0;align-self:stretch}.object-index{font-size:7px;padding:0 10px}.board-stage{min-height:0}.board-stage>svg{width:108%;margin-left:-4%}.hero-figure figcaption{margin-top:-3px;font-size:8px;padding:8px 10px}.view-controls button{width:40px;height:40px}.hero-bottom{margin-top:18px;padding:18px 0 21px;font-size:7px}.hero-bottom>span{display:none}.manifesto-inner{display:grid;grid-template-columns:1fr 1fr;gap:20px;padding-block:25px}.manifesto-inner>span:first-child{grid-column:1/-1;font-size:7px}.manifesto p{font-size:21px}.manifesto-star{display:none}.section-heading{margin-bottom:33px}.section-heading .eyebrow{font-size:9px}.section-meta{display:none}h2{font-size:49px}.origins-grid{grid-template-columns:1fr;gap:35px}.section-intro>p{font-size:12px;max-width:420px;margin-top:20px}.history-art{display:none}.text-link{font-size:10px;margin-top:10px}.timeline li{grid-template-columns:90px 1fr;gap:18px;padding:22px 0}.timeline-date{font-size:9px}.timeline h3{font-size:26px}.timeline p{font-size:10px}.anatomy-heading,.legends-intro{display:block}.anatomy-heading>p,.legends-intro>p{font-size:11px;margin-top:20px}.piece-tabs{margin-top:26px;gap:0}.piece-tabs button{flex-direction:column;gap:4px;min-height:80px;font-size:9px}.piece-tabs button span{font-size:27px}.piece-exhibit{grid-template-columns:.8fr 1fr;gap:25px 20px;padding-top:25px}.piece-object{min-height:260px;padding-right:14px}.object-label{font-size:6px;letter-spacing:0}.material-label{font-size:5px;letter-spacing:0;text-align:center}.piece-object #piece-visual{margin:12px 0}.piece-info h3{font-size:29px;margin:12px 0 15px}.piece-info .eyebrow{font-size:8px}.piece-info p{font-size:10px}.piece-info .piece-note{font-size:8px;margin-top:13px;padding-top:13px}.movement{grid-column:1/-1;width:min(330px,100%);justify-self:center;margin-top:10px}.square .chess-glyph{font-size:34px}.square .coordinate{font-size:8px}.square.marked:after{width:9px;height:9px}.board-topline{font-size:9px}.board-instruction{font-size:10px}.board-legend{font-size:8px}.exhibit-footnote{font-size:7px;line-height:1.9;margin-top:30px}.legend-list{grid-template-columns:1fr;gap:32px;margin-top:32px}.legend{display:grid;grid-template-columns:.9fr 1fr;gap:20px;align-items:center;border-top:1px solid var(--line);padding-top:24px}.portrait{aspect-ratio:.85}.portrait-initial{font-size:95px}.portrait-date{font-size:6px;left:10px;bottom:13px;letter-spacing:.08em}.legend-caption{padding:0}.legend-caption .eyebrow{font-size:6px}.legend h3{font-size:28px;display:block;margin:8px 0}.legend h3 span{font-size:13px;padding-left:6px}.legend-caption>p{font-size:18px}.legend-caption .legend-detail{font-size:9px;margin-top:10px;line-height:1.8}.art-credit{font-size:7px;line-height:1.8}.strategy-grid{grid-template-columns:1fr;gap:35px}.strategy-copy>p:not(.eyebrow):not(.tactic-note){font-size:11px}.strategy-topic{font-size:8px}.tactic-figure{width:min(360px,100%);justify-self:center;margin-top:5px}.tactic-board{border-width:10px}.tactic-board .chess-glyph{font-size:37px}.tactic-figure figcaption{font-size:8px;padding-top:19px}.principles{grid-template-columns:1fr;gap:23px;margin-top:45px;padding-top:25px}.principles>div{display:grid;grid-template-columns:100px 1fr;gap:7px 15px}.principles>div>span{font-size:7px;padding-top:4px;grid-row:span 2}.principles h3{font-size:23px;margin:0}.principles p{font-size:9px}.digital-grid{grid-template-columns:1fr;gap:30px}.digital h2{font-size:45px}.digital-grid>div>p{font-size:11px;margin-top:22px}.resource-list a{padding-block:22px;gap:16px}.resource-list h3{font-size:25px}.resource-list p{font-size:10px}.final-inner{padding-block:65px}.final-inner h2{font-size:45px}.final-inner .eyebrow{font-size:7px;margin-bottom:22px}.closing-knight{font-size:200px;right:-45px}.footer{padding-top:35px;padding-bottom:25px}.footer-top{display:grid;grid-template-columns:1fr 1fr;gap:25px;padding-bottom:30px}.footer-top>.brand{font-size:10px}.footer-top>p{font-size:19px}.footer-top nav{font-size:9px;gap:5px 16px}.back-top{align-self:end;justify-self:end;font-size:8px}.footer-bottom{flex-wrap:wrap;gap:12px;font-size:7px}.footer-bottom>span:last-child{display:none}#credits{font-size:9px;line-height:1.9}}@media(max-width:370px){.hero-caption{display:none}h1{font-size:57px}.hero .eyebrow{font-size:6px}.piece-info h3{font-size:25px}.legend h3{font-size:24px}.portrait-initial{font-size:76px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}.board-stage>svg{transform:none!important}}body{font-size:17px}.header nav,.nav-cta{font-size:14px}.brand{font-size:15px}.brand-sub{font-size:10px}.eyebrow{font-size:12px}.hero .eyebrow{font-size:11px}.hero-description{font-size:17px}.button{font-size:14px;min-height:54px}.hero-caption p{font-size:12px}.object-index,.figure-hint,.hero-bottom,.section-meta{font-size:11px}.hero-bottom>span{font-size:10px}.hero-figure figcaption{font-size:12px}.section-intro>p{font-size:16px}.text-link{font-size:14px}.timeline-date{font-size:13px}.location{font-size:11px}.timeline li{grid-template-columns:145px 1fr}.timeline p{font-size:14px}.timeline h3{font-size:31px}.anatomy-heading>p,.legends-intro>p{font-size:15px}.piece-tabs button{font-size:14px}.piece-info p{font-size:15px}.piece-info .eyebrow{font-size:12px}.piece-info .piece-note{font-size:13px}.piece-exhibit{grid-template-columns:.85fr 1.1fr 1.05fr;gap:35px}.object-label{font-size:10px}.material-label{font-size:9px}.board-topline{font-size:11px}.board-topline button,.board-instruction{font-size:12px}.board-legend{font-size:10px;line-height:1.8}.exhibit-footnote,.legend-caption .eyebrow{font-size:11px}.legend-caption .legend-detail{font-size:14px}.art-credit{font-size:11px}.strategy-copy>p:not(.eyebrow):not(.tactic-note){font-size:16px}.strategy-topic{font-size:11px}.tactic-explanation>span{font-size:11px}.tactic-explanation p{font-size:14px}.tactic-note{font-size:11px}.tactic-figure figcaption{font-size:12px}.principles>div>span{font-size:11px}.principles p{font-size:14px}.digital-grid>div>p{font-size:16px}.resource-list a>span{font-size:12px}.resource-list p{font-size:13px}.final-inner .eyebrow{font-size:11px}.footer-top nav,.back-top{font-size:13px}.footer-bottom{font-size:10px}.footer-top>.brand{font-size:14px}#credits{font-size:13px}.hero-react-object{position:relative;touch-action:pan-y;min-height:350px;outline-offset:8px}.hero-artwork{transform:perspective(1100px) rotateX(var(--tilt-x,0deg)) rotateY(var(--tilt-y,0deg));transition:transform .35s cubic-bezier(.2,.7,.3,1);will-change:transform}.hero-artwork>svg{width:112%;max-width:none;margin-left:-5%;filter:drop-shadow(0 20px 18px #28251817)}.hero-drag-hint{text-align:center;font:10px/1.5 var(--mono);color:var(--muted);margin:0 0 12px}.board-load-status{position:absolute;bottom:35px;left:10px;font:11px var(--mono)}.board-loading{min-height:380px;display:grid;place-items:center;font-family:var(--mono);font-size:12px}.board-stage{min-height:0}.view-controls button{width:44px;height:44px}.scroll-reveal{opacity:0;transform:translateY(26px);transition:opacity .85s var(--ease) var(--reveal-delay,0ms),transform .85s var(--ease) var(--reveal-delay,0ms)}.scroll-reveal.is-revealed{opacity:1;transform:translateY(0)}.opening-sequence{height:260svh;background:#1c211d;color:var(--paper);position:relative;--progress:0}.opening-sticky{height:100svh;min-height:630px;position:sticky;top:0;display:flex;flex-direction:column;overflow:hidden}.opening-top{display:flex;align-items:center;justify-content:space-between;padding-block:30px;font:11px var(--mono);letter-spacing:.1em;z-index:2}.skip-prologue{min-height:44px;display:flex;align-items:center;border-bottom:1px solid #eeeae250;letter-spacing:0}.opening-title{text-align:center;position:relative;z-index:1;padding-top:25px}.opening-title .eyebrow{font-size:11px;color:#b6bbaa;letter-spacing:.23em}.opening-title h2{font-size:clamp(62px,6.5vw,100px);margin:16px 0}.opening-title em{color:#d18a65}.intro-changing{font:19px var(--display);color:#c3c6b8}.opening-object{position:relative;width:min(850px,75vw);margin:-12px auto -10px;flex:1;min-height:0;display:flex;align-items:center;transform:scale(calc(.93 + var(--progress)*.12));transform-origin:50% 60%}.intro-svg{max-height:55svh;filter:drop-shadow(0 32px 30px #0006)}.opening-bottom{margin-top:auto;display:flex;gap:30px;align-items:center;justify-content:space-between;padding-block:28px;font:11px/1.6 var(--mono);letter-spacing:.06em;z-index:2}.opening-bottom>a{min-height:44px;display:flex;align-items:center}.opening-track{height:1px;width:150px;background:#eeeae230;position:relative}.opening-track i{position:absolute;inset:0;background:var(--copper-light);transform:scaleX(var(--progress));transform-origin:left}.opening-bottom>span:first-child>span{display:inline-block;margin-left:15px}.story-dialog{padding:0;border:0;color:var(--ink);background:var(--paper);max-width:100%;width:min(1000px,calc(100% - 56px));max-height:90svh;overflow:auto;overscroll-behavior:contain;box-shadow:0 30px 100px #0006}.story-dialog::backdrop{background:#161b17c9;backdrop-filter:blur(6px)}.story-reader{padding:35px 70px 65px}.reader-bar{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:48px;font:11px var(--mono);letter-spacing:.08em}.reader-bar button{font:13px var(--body);min-height:44px;display:flex;align-items:center;gap:20px}.reader-bar button span{font-size:26px}.story-reader>h2{font-size:clamp(50px,6vw,78px);max-width:700px;line-height:1.02;margin-top:20px}.reader-subtitle{font-size:15px;margin-top:22px;color:var(--muted);padding-bottom:35px;border-bottom:1px solid var(--line)}.reader-body{max-width:650px;margin:40px auto}.reader-body section+section{margin-top:35px}.reader-body h3{font:34px/1.12 var(--display);margin-bottom:15px}.reader-body p{font-size:16px;line-height:1.9;color:#51574d}.reader-sources{border-top:1px solid var(--line);padding-top:26px;margin:40px 0 30px}.reader-sources>p:not(.eyebrow){font-size:12px;color:var(--muted);margin-top:15px}.reader-sources ul{padding-left:18px;font-size:13px}.reader-sources a{text-decoration:underline;text-underline-offset:4px}.reader-sources li{padding:5px 0}@media(max-width:1100px){.hero{grid-template-columns:1fr 1fr;gap:0}.hero-figure{margin-top:100px}.hero .eyebrow{white-space:normal;line-height:1.9;font-size:10px}.hero-description{font-size:16px}.section-meta{max-width:260px;text-align:right}.timeline li{grid-template-columns:115px 1fr}.origins-grid{gap:42px}.piece-exhibit{grid-template-columns:.8fr 1fr;gap:30px}.movement{grid-column:1/-1;width:350px;justify-self:center}.piece-object{min-height:330px}.piece-info h3{font-size:38px}.hero-bottom>span{font-size:8px;max-width:320px;text-align:right}.strategy-grid{gap:50px}.opening-sticky{min-height:580px}}@media(max-width:760px){.wrap{width:calc(100% - 44px)}.header nav a{font-size:16px}.header{height:90px}.header nav{top:89px}.brand{font-size:12px}.brand-sub{font-size:10px}.menu-toggle{font-size:14px}.hero{padding-top:42px}.hero .eyebrow{font-size:10px;line-height:1.8;max-width:340px}h1{font-size:clamp(57px,10vw,82px);margin:24px 0}.hero-description{font-size:16px;line-height:1.8;max-width:460px}.hero-description br{display:none}.hero .button{font-size:13px;min-height:54px;gap:30px}.hero-caption{position:static;margin-top:25px;gap:12px}.hero-caption p{font-size:12px}.edition-mark{font-size:36px}.hero-figure{margin:30px -5px 0}.hero-react-object{min-height:0}.hero-artwork>svg{width:108%;margin-left:-4%}.object-index{font-size:9px}.hero-figure figcaption{font-size:11px;padding:8px 4px}.hero-drag-hint{font-size:9px}.hero-bottom{font-size:10px}.manifesto-inner>span:first-child{font-size:10px}.manifesto p{font-size:24px}.section-heading .eyebrow{font-size:11px}.section-intro>p{font-size:16px}.text-link{font-size:14px;min-height:44px}.timeline li{grid-template-columns:95px 1fr;gap:14px}.timeline-date{font-size:11px}.location{font-size:10px}.timeline h3{font-size:28px}.timeline p{font-size:14px;line-height:1.8}.anatomy-heading>p,.legends-intro>p{font-size:15px}.piece-tabs button{font-size:11px;min-height:90px}.piece-tabs button span{font-size:31px}.piece-exhibit{gap:25px 20px;grid-template-columns:.75fr 1fr}.piece-info h3{font-size:31px}.piece-info p{font-size:14px}.piece-info .piece-note{font-size:12px}.piece-info .eyebrow{font-size:11px}.object-label,.material-label{font-size:8px}.piece-object{min-height:300px;padding-right:12px}.movement{width:min(350px,100%)}.board-topline{font-size:11px}.board-instruction{font-size:12px}.board-legend{font-size:10px}.exhibit-footnote{font-size:11px}.legend{grid-template-columns:.75fr 1fr;gap:18px}.legend h3{font-size:30px}.legend-caption .eyebrow{font-size:9px}.legend-caption .legend-detail{font-size:13px;line-height:1.8}.portrait-date{font-size:8px}.portrait-initial{font-size:90px}.art-credit{font-size:11px}.strategy-copy>p:not(.eyebrow):not(.tactic-note){font-size:16px}.strategy-topic{font-size:10px}.tactic-explanation>span{font-size:11px}.tactic-explanation p{font-size:14px}.tactic-note{font-size:11px}.tactic-figure figcaption{font-size:11px}.principles>div{grid-template-columns:90px 1fr;gap:10px}.principles>div>span{font-size:10px}.principles p{font-size:13px}.digital-grid>div>p{font-size:16px}.resource-list p{font-size:13px}.resource-list a>span{font-size:11px}.final-inner .eyebrow{font-size:10px}.footer-top>.brand{font-size:12px}.footer-top nav,.back-top{font-size:12px}.footer-bottom{font-size:10px}#credits{font-size:12px}.opening-sequence{height:210svh}.opening-sticky{min-height:570px}.opening-top{padding-block:17px;font-size:8px;gap:12px}.skip-prologue{font-size:10px}.opening-title{padding:45px 20px 0}.opening-title .eyebrow{font-size:9px;letter-spacing:.18em}.opening-title h2{font-size:65px;line-height:1.02;max-width:350px;margin:20px auto}.intro-changing{font-size:20px}.opening-object{width:115%;margin-left:-7.5%;margin-top:0}.intro-svg{max-height:45svh}.opening-bottom{padding-block:17px;font-size:9px;gap:15px;flex-wrap:wrap}.opening-bottom>span:first-child{max-width:180px;line-height:1.9}.opening-track{width:65px}.opening-bottom>a{font-size:10px}.story-dialog{width:calc(100% - 20px);max-height:94svh}.story-reader{padding:20px 24px 35px}.reader-bar{margin-bottom:30px;font-size:9px}.reader-bar button{font-size:12px;gap:12px}.story-reader>.eyebrow{font-size:10px}.story-reader>h2{font-size:51px}.reader-subtitle{font-size:13px;line-height:1.8}.reader-body{margin-top:30px}.reader-body h3{font-size:30px}.reader-body p{font-size:16px;line-height:1.85}}@media(max-width:430px){.piece-exhibit{grid-template-columns:1fr}.piece-object{border-right:0;border-bottom:1px solid var(--line);min-height:0;padding:0 0 22px}.piece-object #piece-visual{max-width:190px}.object-label{align-self:center}.material-label{font-size:9px}.piece-info h3{max-width:100%;font-size:37px}.piece-info p{font-size:15px}.piece-info .piece-note{font-size:13px}.movement{grid-column:auto}.legend{grid-template-columns:1fr}.portrait{aspect-ratio:1.8}.portrait-initial{font-size:120px}.legend-caption .eyebrow{font-size:10px}.legend-caption .legend-detail{font-size:14px}.legend-caption>p{font-size:23px}.opening-title h2{font-size:59px}.opening-bottom>a{width:100%;justify-content:center}.opening-track{margin-left:auto}.opening-title{padding-top:30px}}@media(prefers-reduced-motion:reduce){.opening-sequence{height:auto}.opening-sticky{height:auto;min-height:0;position:relative}.opening-title{padding-top:15px}.opening-object{height:300px;flex:none;transform:none}.intro-svg{max-height:300px}.opening-track{display:none}.opening-bottom>span:first-child{display:none}.opening-bottom>a{justify-content:center;width:100%}.scroll-reveal{opacity:1;transform:none}.hero-artwork{transform:none!important;will-change:auto}}.clean-opening{height:300svh}.clean-opening .opening-sticky{justify-content:center;min-height:0}.clean-opening .opening-object{width:min(1150px,95vw);margin:auto;flex:none;transform:scale(calc(.88 + var(--progress)*.12))}.clean-opening .hero-board{max-height:85svh}.mate-indicator{position:absolute;bottom:9%;left:0;right:0;text-align:center;font:clamp(15px,2vw,25px) var(--mono);letter-spacing:.35em;color:var(--copper-light);opacity:0;transform:translateY(10px);transition:opacity .5s,transform .5s}.is-checkmate .mate-indicator{opacity:1;transform:none}.hero-game-controls{display:flex;align-items:center;justify-content:center;gap:15px;flex-wrap:wrap;margin:5px 0 12px;font:10px/1.6 var(--mono);color:var(--muted)}.hero-game-controls button{border:1px solid var(--line);min-height:44px;padding:8px 13px;font:12px var(--body);color:var(--ink)}.legend-list{grid-template-columns:repeat(3,1fr);row-gap:45px}.portrait-fischer,.portrait-lasker{background:#788071}.portrait-anand,.portrait-tal{background:#9b7960}.portrait-karpov,.portrait-kramnik{background:#7b857a}.portrait-capablanca{background:#a69b85}.hero h1{font-size:clamp(60px,6.2vw,92px)}.hero h1 em{white-space:normal}.clean-opening .intro-accessible-skip:focus{z-index:30}@media(max-width:760px){.clean-opening{height:250svh}.clean-opening .opening-object{width:125%;margin-left:-12.5%}.clean-opening .hero-board{max-height:75svh}.legend-list{grid-template-columns:1fr}.hero h1{font-size:clamp(58px,10vw,80px)}.hero-game-controls{font-size:9px}.mate-indicator{bottom:18%}}@media(prefers-reduced-motion:reduce){.clean-opening,.clean-opening .opening-sticky{height:85svh}.clean-opening .opening-object{height:auto;transform:none}}.origins-grid{grid-template-columns:.85fr 1.2fr;gap:95px}.origins .section-intro{position:sticky;top:45px;align-self:start}.timeline li{padding-block:31px}.timeline p{font-size:15px;max-width:410px;line-height:1.9}.timeline h3{font-size:34px}.editorial-interlude{background:#a05235;color:var(--paper);overflow:hidden}.editorial-interlude>.wrap{padding-block:70px;position:relative}.editorial-interlude span{font:11px var(--mono);letter-spacing:.2em}.editorial-interlude span:last-child{display:block;text-align:right;margin-top:30px}.editorial-interlude p{font:clamp(80px,11vw,160px)/.88 var(--display);letter-spacing:-.055em;margin-top:35px}.editorial-interlude em{color:#e5c4a3}.legend-list{grid-template-columns:repeat(2,1fr);gap:0 55px}.legend{display:grid;grid-template-columns:110px 1fr;align-items:start;gap:25px;padding:32px 0;border-top:1px solid var(--line)}.legend .portrait{background:none!important;aspect-ratio:auto;min-height:160px;overflow:visible;justify-content:start;align-items:start}.legend .portrait-initial{font:76px/1 var(--display);color:var(--copper);letter-spacing:-.1em;padding:0;opacity:.7}.legend .portrait-date{bottom:auto;top:95px;left:0;font-size:8px;max-width:100px;line-height:1.9}.legend-caption{padding-top:0}.legend h3{font-size:35px;margin:10px 0}.legend-caption .legend-detail{font-size:14px;max-width:none}.legend:hover .portrait-initial{transform:translate(5px);opacity:1}.hero-figure{margin-top:0}.hero-react-object{margin-bottom:0}.hero-game-controls{margin-top:-8px}.hero-artwork>svg{filter:drop-shadow(0 25px 20px #28251820)}.legends-intro h2{font-size:clamp(55px,6.5vw,88px)}.reader-body section:first-child p:first-letter{float:left;font:67px/.9 var(--display);color:var(--copper);padding:8px 10px 0 0}@media(max-width:1000px){.origins-grid{gap:45px}.legend-list{gap:0 30px}.legend{grid-template-columns:75px 1fr;gap:15px}.legend .portrait-initial{font-size:60px}.legend h3{font-size:30px}.timeline li{grid-template-columns:95px 1fr}.editorial-interlude>.wrap{padding-block:55px}}@media(max-width:760px){.origins-grid{grid-template-columns:1fr;gap:30px}.origins .section-intro{position:static}.timeline p{font-size:15px;max-width:none}.timeline h3{font-size:29px}.timeline li{padding-block:25px}.editorial-interlude>.wrap{padding-block:40px}.editorial-interlude p{font-size:clamp(65px,12vw,95px);margin-top:25px}.editorial-interlude span{font-size:9px}.legend-list{grid-template-columns:1fr}.legend{grid-template-columns:80px 1fr;gap:20px;padding-block:27px}.legend .portrait{min-height:140px}.legend .portrait-initial{font-size:65px}.legend .portrait-date{top:80px;font-size:7px}.legend h3{font-size:32px}.legend-caption .legend-detail{font-size:14px}.hero h1{font-size:clamp(59px,10.7vw,82px)}.legends-intro h2{font-size:52px}}.chapter-marker{display:flex;align-items:center;gap:17px;min-height:65px}.chapter-number{font:52px/1 var(--display);letter-spacing:-.04em;color:var(--copper)}.chapter-slash{font:54px/1 var(--display);font-weight:400;color:var(--copper);transform:translateY(-3px)}.chapter-marker p{font:14px/1.8 var(--body);color:var(--muted);letter-spacing:0}.chapter-marker strong{font-weight:500;color:var(--ink)}.dark .chapter-number,.dark .chapter-slash{color:var(--copper-light)}.dark .chapter-marker strong{color:var(--paper)}.closing-marker{justify-content:center;margin-bottom:32px;text-align:left}.edition-mark{display:flex;align-items:center;gap:13px;font-size:47px}.edition-mark i{font:normal 50px/1 var(--display);transform:translateY(-2px)}.section-heading{gap:25px}.chapter-marker+.section-meta{max-width:340px;text-align:right}@media(max-width:760px){.chapter-marker{gap:13px;min-height:60px}.chapter-number{font-size:44px}.chapter-slash{font-size:47px}.chapter-marker p{font-size:12px}.edition-mark{font-size:43px;gap:10px}.edition-mark i{font-size:47px}.closing-marker{margin-bottom:25px}.section-heading{margin-bottom:32px}}.creator-credit{display:inline-block;margin-left:12px;color:var(--copper);text-decoration:underline;text-underline-offset:4px}.creator-credit:hover{color:var(--ink)}@media(max-width:760px){.creator-credit{display:block;margin-left:0;margin-top:9px}}.brand-emblem{width:38px;height:38px;object-fit:contain;flex-shrink:0}@media(max-width:760px){.brand-emblem{width:32px;height:32px}}.hero{padding-bottom:64px}.origins.section{padding-top:64px}@media(max-width:760px){.hero{padding-bottom:44px}.origins.section{padding-top:44px}}
