@font-face{font-family:Glacial Indifference;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/glacial/GlacialIndifference-Regular.woff2)format("woff2")}@font-face{font-family:Glacial Indifference;font-style:italic;font-weight:400;font-display:swap;src:url(/fonts/glacial/GlacialIndifference-Italic.woff2)format("woff2")}@font-face{font-family:Glacial Indifference;font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/glacial/GlacialIndifference-Bold.woff2)format("woff2")}:root{--paper:#fff;--ink:#1e1c1d;--bg:#f6f6f5;--surface:#fff;--fg:#1e1c1d;--muted:#5e5b5c;--line:#dddbdb;--note:#ececeb;--accent:#1e1c1d;--accent-fg:#fff;--focus:#2e5bd8;--font-display:"Glacial Indifference","Avenir Next","Futura","Segoe UI",sans-serif;--font-body:"Glacial Indifference","Avenir Next","Segoe UI","Helvetica Neue",Arial,sans-serif;--rail:272px;--measure:64ch;--s1:4px;--s2:8px;--s3:12px;--s4:16px;--s5:24px;--s6:32px;--s7:48px;--s8:72px}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#161415;--surface:#201e1f;--fg:#f1efef;--muted:#aaa6a7;--line:#353233;--note:#2a2728;--accent:#f1efef;--accent-fg:#161415;--focus:#8eaaff;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}:root[data-theme=dark]{--bg:#161415;--surface:#201e1f;--fg:#f1efef;--muted:#aaa6a7;--line:#353233;--note:#2a2728;--accent:#f1efef;--accent-fg:#161415;--focus:#8eaaff;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box}[hidden]{display:none!important}html{scroll-behavior:smooth;scroll-padding-top:24px}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}html,body{margin:0}body{background:var(--bg);color:var(--fg);font-family:var(--font-body);font-size:1.0625rem;font-weight:400;line-height:1.6}body:before{content:"";height:env(safe-area-inset-top,0px);z-index:10;background:var(--surface);position:fixed;inset:0 0 auto}img{max-width:100%;height:auto;display:block}a{color:inherit}:focus-visible{outline:2px solid var(--focus);outline-offset:3px;border-radius:4px}strong,b{font-weight:700}.skip{left:var(--s4);z-index:30;background:var(--accent);color:var(--accent-fg);padding:var(--s2)var(--s4);border-radius:6px;text-decoration:none;position:absolute;top:-100px}.skip:focus{top:calc(var(--s4) + env(safe-area-inset-top,0px))}.shell{grid-template-columns:var(--rail)minmax(0,1fr);min-height:100dvh;display:grid}.rail{top:env(safe-area-inset-top,0px);height:calc(100dvh - env(safe-area-inset-top,0px));background:var(--surface);border-right:1px solid var(--line);flex-direction:column;display:flex;position:sticky;overflow:hidden}.rail-body{min-height:0;padding-block:var(--s6)var(--s5);padding-left:max(var(--s5),env(safe-area-inset-left,0px));padding-right:var(--s5);flex:auto;overflow-y:auto}.rail-foot{border-top:1px solid var(--line);padding-block:var(--s3)calc(var(--s3) + env(safe-area-inset-bottom,0px));padding-left:max(var(--s5),env(safe-area-inset-left,0px));padding-right:var(--s5);flex:none}.rail-brand{gap:var(--s2);margin-bottom:var(--s4);color:var(--fg);flex-direction:column;text-decoration:none;display:flex}.rail-brand .brand-logo{width:136px;height:auto;display:block}.brand-logo{flex:none}.rail-brand span{color:var(--muted);font-size:.8125rem}.toc{gap:var(--s1);display:grid}.toc-group,.toc-sub{font:inherit;color:inherit;cursor:pointer;background:0 0;border:0}.toc-group{width:100%;font-family:var(--font-display);padding:var(--s2)var(--s3);text-align:left;color:var(--fg);border-radius:6px;justify-content:space-between;align-items:center;font-size:1rem;font-weight:700;transition:background-color .15s;display:flex}.toc-group:hover,.toc-sub:hover{background:var(--note)}.toc-group:after,.toc-sub:after{content:"";border-bottom:1.5px solid;border-right:1.5px solid;flex:none;width:7px;height:7px;transition:transform .2s;transform:rotate(-45deg)}.toc-group[aria-expanded=true]:after,.toc-sub[aria-expanded=true]:after{margin-top:-4px;transform:rotate(45deg)}.toc-group.has-current{background:var(--note)}.toc>ol{margin:0 0 var(--s3)}.toc-row{grid-template-columns:minmax(0,1fr) 32px;align-items:center;gap:2px;display:grid}.toc-sub{width:32px;height:32px;color:var(--muted);border-radius:6px;place-items:center;display:grid}.toc-sub.has-current{color:var(--fg);background:var(--note)}.theme-switch{border:1px solid var(--line);background:var(--bg);border-radius:8px;grid-template-columns:auto auto;gap:2px;padding:3px;display:inline-grid}.theme-switch button{font:inherit;color:var(--muted);cursor:pointer;background:0 0;border:0;border-radius:6px;place-items:center;width:34px;height:34px;padding:0;font-size:.8125rem;font-weight:400;transition:background-color .15s,color .15s;display:grid}.theme-switch button:hover{color:var(--fg)}.theme-switch button[aria-pressed=true]{background:var(--accent);color:var(--accent-fg)}@media (prefers-reduced-motion:reduce){.toc-group:after,.toc-sub:after,.toc a,.toc-group,.theme-switch button{transition:none}}.toc ol{gap:2px;margin:0;padding:0;list-style:none;display:grid}.toc a{padding:6px var(--s3);color:var(--muted);border-left:2px solid #0000;border-radius:6px;font-size:.9375rem;font-weight:400;text-decoration:none;transition:background-color .15s,color .15s,border-color .15s;display:block}.toc a:hover{background:var(--note);color:var(--fg)}.toc a[aria-current=true]{color:var(--fg);background:var(--note);border-left-color:var(--fg);border-radius:0 6px 6px 0;font-weight:700}.toc ol ol{margin:2px 0 var(--s2)var(--s3)}.toc ol ol a{padding-block:3px;font-size:.875rem}.topbar{display:none}main{min-width:0;padding-block:var(--s7)var(--s8);padding-left:max(var(--s4),env(safe-area-inset-left,0px));padding-right:max(var(--s4),env(safe-area-inset-right,0px))}.column{gap:var(--s8);max-width:760px;margin-inline:auto;display:grid}.hero{gap:var(--s5);text-align:center;justify-items:center;display:grid}.hero-stage{border:1px solid var(--line);background:linear-gradient(90deg,var(--paper)50%,var(--ink)50%);width:100%;padding-block:var(--s6);border-radius:16px;place-items:center;display:grid}.hero-stage img{filter:drop-shadow(0 18px 24px #00000047);width:min(360px,78%);height:auto}.hero-text{gap:var(--s3);justify-items:center;min-width:0;display:grid}.hero h1{font-family:var(--font-display);text-wrap:balance;max-width:18ch;margin:0;font-size:clamp(2rem,5vw,3.25rem);font-weight:700;line-height:1.05}.hero-sub{color:var(--muted);margin:0;font-size:1.25rem}.chips{margin:var(--s2)0 0;flex-wrap:wrap;justify-content:center;gap:6px;max-width:560px;padding:0;list-style:none;display:flex}.chips li{padding:4px var(--s3);border:1px solid var(--line);background:var(--surface);color:var(--fg);border-radius:999px;font-size:.8125rem;line-height:1.2}.video-card{align-content:center;place-items:center;gap:var(--s3);aspect-ratio:16/9;text-align:center;background:linear-gradient(90deg,#2b2829 50%,var(--ink)50%);border:1px solid var(--line);width:100%;max-width:100%;padding:var(--s4);border-radius:16px;text-decoration:none;transition:box-shadow .2s;display:grid;position:relative;overflow:hidden}.video-card:hover{box-shadow:0 12px 30px -14px #0000008c}.video-card:hover .video-meta{text-underline-offset:3px;text-decoration:underline}.video-play{color:#1e1c1d;background:#fff;border-radius:50%;place-items:center;width:68px;height:68px;display:grid;box-shadow:0 8px 24px #0000004d}.video-play svg{margin-left:4px}.video-thumb{place-items:center;display:grid;position:relative}.video-cover{object-fit:contain;filter:drop-shadow(0 14px 20px #0006);width:auto;height:220px}.video-thumb .video-play{position:absolute}@media (max-width:640px){.video-card{aspect-ratio:auto;padding-block:var(--s5)}.video-cover{height:150px}.video-play{width:56px;height:56px}}.video-title{color:#fff;font-family:var(--font-display);font-size:1.25rem;font-weight:700;line-height:1.2}.video-meta{color:#e6e3e3;font-size:.875rem}@media (prefers-reduced-motion:reduce){.video-card{transition:none}}section{gap:var(--s4);min-width:0;display:grid}h2{font-family:var(--font-display);text-wrap:balance;letter-spacing:-.005em;margin:0;font-size:clamp(1.625rem,3vw,2rem);font-weight:700;line-height:1.1}h3{font-family:var(--font-display);text-wrap:balance;margin:0;font-size:1.25rem;font-weight:700;line-height:1.2}p{max-width:var(--measure);text-wrap:pretty;margin:0}.lead{font-size:1.0625rem}.note{background:var(--note);padding:var(--s3)var(--s4);max-width:var(--measure);border-radius:10px;font-style:italic}.note strong{font-style:normal}.formula{padding:var(--s4)0;border-block:1px solid var(--line);max-width:var(--measure);font-size:1.125rem}figure{gap:var(--s2);min-width:0;margin:0;display:grid}figcaption{color:var(--muted);font-size:.8125rem}.plate{background:var(--paper);padding:var(--s4);border:1px solid var(--line);border-radius:10px;place-items:center;display:grid}.plate.ink{background:var(--ink);border-color:var(--ink)}.plate img{object-fit:contain;max-width:100%;height:auto;max-height:100%}.parts{gap:var(--s4);grid-template-columns:repeat(auto-fit,minmax(200px,1fr));display:grid}.part{gap:var(--s2);align-content:start;display:grid}.part .plate{height:170px}.part .plate img{width:auto;max-height:130px}.part h3{font-size:1.0625rem}.part p{color:var(--muted);font-size:.9375rem}.steps{gap:var(--s4);counter-reset:none;max-width:var(--measure);margin:0;padding:0;list-style:none;display:grid}.steps>li{gap:var(--s3);grid-template-columns:3rem minmax(0,1fr);align-items:baseline;display:grid}.steps .n{font-family:var(--font-display);font-variant-numeric:tabular-nums;font-weight:700}.steps ul{margin:var(--s2)0 0;gap:var(--s1);padding-left:1.1rem;display:grid}.pair{gap:var(--s4);grid-template-columns:repeat(auto-fit,minmax(220px,1fr));align-items:start;display:grid}.pair .plate{min-height:220px}.pair .plate img{width:auto;max-height:260px}.split{gap:var(--s5);grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);align-items:start;display:grid}.split .plate img{width:100%;max-width:300px}.score-table{border-collapse:collapse;font-variant-numeric:tabular-nums;min-width:320px}.score-table th,.score-table td{text-align:left;padding:var(--s2)var(--s5)var(--s2)0;border-bottom:1px solid var(--line)}.score-table th{font-family:var(--font-display);color:var(--muted);font-size:.875rem;font-weight:700}.score-table td:last-child{font-weight:700}.table-wrap{overflow-x:auto}.tiebreak{gap:var(--s2);max-width:520px;margin:0;padding:0;list-style:none;display:grid}.tiebreak li{gap:var(--s3);grid-template-columns:2.25rem minmax(0,1fr);align-items:center;display:grid}.tiebreak .n{background:var(--accent);width:2.25rem;height:2.25rem;color:var(--accent-fg);font-family:var(--font-display);border-radius:50%;place-items:center;font-weight:700;display:grid}.tiebreak .cond{color:var(--muted);font-size:.8125rem;display:block}.kinds{gap:var(--s4);grid-template-columns:repeat(auto-fit,minmax(240px,1fr));display:grid}.kind{gap:var(--s4);padding:var(--s4);border:1px solid var(--line);background:var(--surface);border-radius:10px;grid-template-columns:88px minmax(0,1fr);align-items:center;display:grid}.kind .plate{padding:var(--s2)}.kind p{font-size:.9375rem}.mods{gap:var(--s5);display:grid}.mod{gap:var(--s5);padding-top:var(--s5);border-top:1px solid var(--line);grid-template-columns:112px minmax(0,1fr);align-items:start;scroll-margin-top:24px;display:grid}.mod>.plate{height:112px;padding:var(--s3)}.mod>.plate img{width:auto;max-height:86px}.mod-body{gap:var(--s2);min-width:0;display:grid}.mod dl{gap:var(--s2);margin:0;display:grid}.mod dl>div{gap:var(--s3);grid-template-columns:4.5rem minmax(0,1fr);display:grid}.mod dt{padding-top:1px;font-size:.875rem;font-weight:700}.mod dd{max-width:60ch;margin:0}.mod .example{margin-top:var(--s3);max-width:280px}.mod .example .plate{padding:var(--s3)}.mod .example .plate img{width:100%;max-height:none}.summary{background:var(--surface);border:1px solid var(--line);padding:var(--s5);gap:var(--s4);border-radius:12px;display:grid}.summary dl{gap:var(--s3)var(--s5);grid-template-columns:max-content minmax(0,1fr);margin:0;display:grid}.summary dt{font-family:var(--font-display);font-weight:700}.summary dd{margin:0}.summary dd ul{margin:0;padding-left:1.1rem}.credits{gap:var(--s6);grid-template-columns:minmax(0,1fr) auto;align-items:center;display:grid}.credits-text{gap:var(--s3);display:grid}.links{gap:var(--s2);margin:0;padding:0;list-style:none;display:grid}.links a{text-underline-offset:3px;font-weight:700}.author{align-items:center;gap:var(--s4);display:flex}.author img{object-fit:cover;object-position:50% 62%;border-radius:50%;flex:none;width:120px;height:120px}.author-text{gap:2px;display:grid}.author-text strong{font-size:1.375rem;font-family:var(--font-display);line-height:1.2}.author-text span{color:var(--muted)}.qr{width:150px}.qr .plate{padding:var(--s3)}.loop-mark{background:var(--paper);padding:var(--s2)var(--s3);border-radius:8px;justify-self:start}.loop-mark img{width:84px}hr.divide{border:0;border-top:1px solid var(--line);margin:0}@media (max-width:960px){.shell{grid-template-columns:minmax(0,1fr)}.topbar{justify-content:space-between;align-items:center;gap:var(--s3);top:env(safe-area-inset-top,0px);z-index:20;background:var(--surface);border-bottom:1px solid var(--line);padding-block:var(--s3);padding-left:max(var(--s4),env(safe-area-inset-left,0px));padding-right:max(var(--s4),env(safe-area-inset-right,0px));display:flex;position:sticky}.topbar-brand{color:var(--fg);border-radius:4px;line-height:0;display:block}.topbar-brand .brand-logo{width:92px;height:auto;display:block}.menu-btn{background:var(--accent);color:var(--accent-fg);cursor:pointer;border:0;border-radius:8px;place-items:center;width:40px;height:40px;padding:0;display:grid}.menu-btn .ico-close,.menu-btn[aria-expanded=true] .ico-open{display:none}.menu-btn[aria-expanded=true] .ico-close{display:block}.rail{z-index:15;top:calc(env(safe-area-inset-top,0px) + 65px);border-right:0;height:auto;display:none;position:fixed;bottom:0;left:0;right:0}.rail-body{padding-left:max(var(--s4),env(safe-area-inset-left,0px));padding-right:max(var(--s4),env(safe-area-inset-right,0px));padding-block:var(--s4)}.rail-foot{display:none}.topbar-actions{align-items:center;gap:var(--s2);display:flex}.theme-toggle{cursor:pointer;width:40px;height:40px;color:var(--fg);border:1px solid var(--line);background:0 0;border-radius:8px;place-items:center;padding:0;display:grid}.theme-toggle .ico-moon,:root[data-theme=dark] .theme-toggle .ico-sun{display:none}:root[data-theme=dark] .theme-toggle .ico-moon{display:block}.rail.open{display:flex}.rail-brand{display:none}main{padding-top:var(--s4)}html{scroll-padding-top:80px}.mod{scroll-margin-top:80px}}@media (max-width:640px){.split{grid-template-columns:minmax(0,1fr)}.mod{gap:var(--s4);grid-template-columns:76px minmax(0,1fr)}.mod>.plate{height:76px;padding:var(--s2)}.mod>.plate img{max-height:58px}.mod dl>div{grid-template-columns:minmax(0,1fr);gap:0}.credits{grid-template-columns:minmax(0,1fr)}.summary dl{gap:var(--s1);grid-template-columns:minmax(0,1fr)}.summary dd{margin-bottom:var(--s3)}.steps>li{grid-template-columns:2.5rem minmax(0,1fr)}}