:root{--paper:hsl(101 18% 97%);--primary:hsl(101 38% 24%);--primary-contrast:#fff;--accent:hsl(186 64% 34%);--surface:#fff;--surface-2:hsl(101 24% 95%);--text:#202a30;--heading:#202a30;--muted:#4a5960;--border:hsl(101 14% 68%);--radius:0px;--font-body:'Lora',sans-serif;--font-head:'Lora',sans-serif;--font-mono:'Lora',sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--paper);color:var(--text);font:400 17px/1.85 var(--font-body)}a{color:inherit;text-underline-offset:4px}button{font:inherit}svg{display:block;max-width:100%}a,button,summary{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:4px}.skip{position:fixed;top:-100px;left:12px;z-index:20;background:white;padding:12px}.skip:focus{top:8px}.site-header{max-width:1280px;margin:auto;padding:22px 28px;display:flex;align-items:center;flex-wrap:wrap;gap:18px;border-bottom:1px solid var(--border)}.brand{min-height:44px;display:flex;align-items:center;gap:12px;text-decoration:none;font-weight:700;font-size:22px;min-width:0}.brand span:last-child{overflow-wrap:anywhere}.brand-symbol{flex:0 0 44px;min-height:44px;display:grid;place-items:center;background:var(--primary);color:var(--primary-contrast);font-size:24px;border-radius:var(--radius)}#site-nav{display:flex;flex-wrap:wrap;gap:4px;margin-left:auto}#site-nav a,.languages a{display:inline-flex;align-items:center;min-height:44px;padding:8px 10px;text-decoration:none;font-size:13px;line-height:1.8}#site-nav a[aria-current],.languages a[aria-current]{background:var(--surface-2)}.languages{display:flex;flex-wrap:wrap}.nav-toggle{display:none;min-height:44px;border:1px solid var(--primary);background:transparent;color:var(--text);padding:8px 14px}main{max-width:1200px;margin:auto;padding:0 28px}.own-hero{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;padding:54px 0;align-items:start}.own-hero>.hero-copy{grid-column:1;grid-row:1;min-width:0}.own-hero>.hero-art{grid-column:2;grid-row:1;min-width:0}.eyebrow{font-size:13px;color:var(--muted);line-height:1.8;margin:0 0 18px}h1{font:700 clamp(34px,4.3vw,61px)/1.23 var(--font-head);margin:0 0 24px;overflow-wrap:anywhere}h2{font:700 29px/1.45 var(--font-head);margin:0 0 22px;overflow-wrap:anywhere}h3{font-size:20px;line-height:1.55}.lead{font-size:19px;line-height:1.85;max-width:780px}.lead p:first-child{margin-top:0}.play-link{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:12px 24px;background:var(--primary);color:var(--primary-contrast);text-decoration:none;border-radius:var(--radius);margin-top:12px}.hero-art{padding:18px;border:1px solid var(--border);background:var(--surface-2);border-radius:var(--radius)}.hero-art svg{width:100%;height:auto}.demo-frame{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius);padding:22px;margin-bottom:52px}.demo-head{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;padding:0 0 18px}.demo-head h2{font-size:21px;margin:0}.demo-head span{font-size:13px;line-height:1.8}.reading-frame{display:grid;grid-template-columns:205px minmax(0,1fr);gap:54px}.chapter-index{border-top:3px solid var(--accent);padding-top:18px;align-self:start}.chapter-index h2{font-size:16px}.chapter-index nav{display:flex;flex-direction:column}.chapter-index a{display:inline-flex;align-items:center;min-height:44px;padding:10px 0;border-bottom:1px solid var(--border);text-decoration:none;font-size:14px;line-height:1.75}article{min-width:0}article>section{padding:30px 0;border-top:1px solid var(--border)}article p{margin:0 0 20px}article ul,article ol{padding-left:24px}article img{max-width:100%}article table{display:block;max-width:100%;overflow:auto;border-collapse:collapse;font-size:15px}article td,article th{padding:10px;border:1px solid var(--border)}summary{cursor:pointer;min-height:52px;padding:16px 4px;font-weight:650;line-height:1.7}details{border-top:1px solid var(--border)}details>div{padding:0 4px 18px}.related{margin:48px 0}.related>div{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.related a{padding:20px;border:1px solid var(--border);border-radius:var(--radius);text-decoration:none;min-width:0}.related p{font-size:15px;line-height:1.8}.breadcrumbs{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;margin-top:20px}.breadcrumbs a{min-height:44px;display:inline-flex;align-items:center}footer{max-width:1200px;margin:40px auto 0;border-top:3px solid var(--primary);padding:28px;font-size:13px;line-height:1.85}.footer-links{display:flex;flex-wrap:wrap;gap:4px 20px}.footer-links a{display:inline-flex;align-items:center;min-height:44px}.footer-end{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}@media(max-width:979px){.site-header{padding:16px 20px;gap:12px}.nav-toggle{display:block;margin-left:auto}#site-nav{display:none;order:5;width:100%;margin:0}.nav-open #site-nav{display:flex;flex-direction:column}#site-nav a{font-size:16px;padding:12px}.own-hero{grid-template-columns:minmax(0,1fr) 225px;gap:24px}.reading-frame{grid-template-columns:170px minmax(0,1fr);gap:30px}}@media(max-width:650px){body{font-size:16px}.site-header{padding:12px 16px}.brand{font-size:19px;max-width:calc(100% - 78px)}main{padding:0 16px}.own-hero{display:flex!important;flex-direction:column!important;gap:24px;padding:32px 0!important}.hero-copy{order:0;width:100%}.hero-art{order:1;width:100%;max-width:330px;align-self:center;position:static!important;transform:none!important;margin:0!important}.hero-art svg{max-height:220px}h1{font-size:34px;line-height:1.35}h2{font-size:26px}.lead{font-size:17px}.demo-frame{padding:12px;margin-bottom:36px}.demo-head{padding:4px 4px 14px;gap:8px}.demo-head h2{font-size:18px}.reading-frame{display:flex!important;flex-direction:column;gap:32px}.chapter-index nav{display:grid;grid-template-columns:1fr 1fr;gap:0 20px}.chapter-index a{font-size:13px}.related>div{grid-template-columns:1fr}.languages{width:100%}.breadcrumbs{font-size:12px}footer{padding:24px 16px}}body:lang(bn),body:lang(my),body:lang(th){line-height:1.9;letter-spacing:0}body:lang(bn) h1,body:lang(my) h1,body:lang(th) h1{line-height:1.65;letter-spacing:0}body:lang(bn) h2,body:lang(my) h2,body:lang(th) h2{line-height:1.75;letter-spacing:0}body:lang(bn) *,body:lang(my) *,body:lang(th) *{text-transform:none;letter-spacing:0}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}


article td,article th{min-width:90px;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}#game-root{min-width:0}#game-root .oc-board{min-width:0;padding:10px}#game-root .oc-quote strong{font-size:clamp(25px,6vw,36px)}

.site-header a,.languages a,.footer-links a,.chapter-index a,.breadcrumbs a,.play-link{min-width:44px}button,summary{min-width:44px}

/* 27K: midnight cyan compact arcade dashboard, composition 10 */
:root{--paper:#08131f;--surface:#102333;--surface-2:#132d40;--primary:#56e4ee;--primary-contrast:#04232b;--accent:#c6ef7c;--text:#e2eef4;--heading:#f3fbff;--muted:#afc9d8;--border:#355a6e;--radius:14px;--font-body:Arial,sans-serif;--font-head:'Lora',Georgia,serif}
body{font-size:17px;line-height:1.75;background:radial-gradient(ellipse at top right,#15415a 0,transparent 45%),var(--paper)}
.site-header{max-width:1440px;padding:14px 28px;background:#0b1b28;border-bottom:2px solid var(--primary)}
.brand-symbol{border-radius:50%;box-shadow:0 0 24px #56e4ee33}#site-nav a,.languages a{border-radius:8px}
main{max-width:1260px}.own-hero{grid-template-columns:minmax(0,1fr) 200px;gap:28px;padding:36px 0;align-items:center}h1{font-size:clamp(32px,3.6vw,49px);line-height:1.25}.lead{font-size:18px}.eyebrow{color:var(--primary);letter-spacing:.1em;text-transform:uppercase}.hero-art{border-radius:50%;background:#102c40}.play-link{font:700 16px Arial,sans-serif;box-shadow:0 8px 28px #0004}.demo-frame{max-width:880px;margin:0 auto 40px;padding:18px;box-shadow:0 16px 40px #0004;border-top:4px solid var(--primary)}.reading-frame{grid-template-columns:220px minmax(0,1fr);gap:32px}.chapter-index{background:var(--surface);border-radius:12px;padding:18px;position:sticky;top:18px}article{background:#0c1d2a;border:1px solid var(--border);border-radius:16px;padding:26px}article>section:first-child{border-top:0}.related a{background:var(--surface)}.related a:hover{border-color:var(--primary)}.skip{color:#08131f}#game-root .g-msg.win{color:#a7f3bc}#game-root .g-msg.lose{color:#ffb6be}#game-root .oc-board{gap:6px}#game-root .oc-cell{border-radius:8px}#game-root .oc-rules{font-size:14px}
@media(max-width:650px){.site-header{padding:12px 16px}.own-hero{padding:26px 0!important}.hero-art{max-width:150px}.hero-art svg{max-height:120px}.demo-frame{padding:8px}.reading-frame{gap:20px}.chapter-index{position:static;width:100%}article{padding:18px}h1{font-size:32px}.chapter-index nav{display:flex}.lead{font-size:17px}}