@font-face{font-family:Lexend Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/lexend-vietnamese-wght-normal-RvljkFvg.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Lexend Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/lexend-latin-ext-wght-normal-B6JQhE1e.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Lexend Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/lexend-latin-wght-normal-ci0D1wrL.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{--paper:#eef3f7;--paper-rule:#dde7ef;--cell:#fbfdff;--rule:#c9d6e2;--ink:#17294d;--ink-soft:#52627f;--highlight:#ffd84d;--pen:#2f5bd3;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}*,:before,:after{box-sizing:border-box}html{background-color:var(--paper);background-image:linear-gradient(var(--paper-rule) 1px, transparent 1px), linear-gradient(90deg, var(--paper-rule) 1px, transparent 1px);background-size:1.5rem 1.5rem}body{color:var(--ink);font-variant-numeric:tabular-nums;margin:0;padding-block:1.5rem 4rem;padding-inline:1rem;font-family:Lexend Variable,system-ui,sans-serif;font-size:1.125rem;line-height:1.55}.masthead,main{max-width:38rem;margin-inline:auto}a{color:var(--pen);text-underline-offset:.2em}a:focus-visible{outline:3px solid var(--pen);outline-offset:3px;border-radius:4px}.wordmark{color:var(--ink);font-size:1.25rem;font-weight:700;text-decoration:none}h1{letter-spacing:-.02em;margin-block:2.5rem .5rem;font-size:clamp(2.5rem,9vw,3.75rem);font-weight:700;line-height:1.05}h2{margin-block:3rem 1rem;font-size:1.25rem;font-weight:600}p{max-width:34rem;margin-block:0 1rem}.lede{color:var(--ink-soft)}.grid{--cell-size:min(3.25rem, (100vw - 2rem - 2px) / var(--size));grid-template-columns:repeat(var(--size), var(--cell-size));border-top:2px solid var(--ink);border-left:2px solid var(--ink);width:max-content;margin-block-start:2rem;display:grid}.grid-cell{height:var(--cell-size);border-right:1px solid var(--rule);border-bottom:1px solid var(--rule);background:var(--cell);color:var(--ink-soft);font-size:calc(var(--cell-size) * .36);animation:.36s cubic-bezier(.2,.7,.3,1) both fill-in;animation-delay:calc(var(--step) * 45ms);place-items:center;display:grid}.grid-cell.is-factor{color:var(--ink);font-weight:600}.grid-cell.is-square{background:var(--highlight);color:var(--ink);font-weight:700}@keyframes fill-in{0%{opacity:0;transform:scale(.5)}}@media (prefers-reduced-motion:reduce){.grid-cell{animation:none}}.games ul{margin:0;padding:0;list-style:none}.game{border:2px solid var(--ink);background:var(--cell);box-shadow:5px 5px 0 var(--ink);color:var(--ink);border-radius:14px;gap:.25rem;padding:1.25rem 1.5rem;text-decoration:none;transition:transform .12s ease-out,box-shadow .12s ease-out;display:grid}.game:hover{box-shadow:7px 7px 0 var(--ink);transform:translate(-2px,-2px)}.game:focus-visible{border-radius:14px}.game-name{font-size:1.5rem;font-weight:700}.game-about{color:var(--ink-soft)}.game-status{background:var(--highlight);border-radius:999px;justify-self:start;margin-block-start:.5rem;padding:.125rem .625rem;font-size:.9375rem;font-weight:600}@media (prefers-reduced-motion:reduce){.game{transition:none}}.notice .equation{margin-block:3rem 0;font-size:clamp(2.75rem,12vw,4.5rem);font-weight:700;line-height:1.1}.notice h1{margin-block-start:1.5rem}.blank{background:var(--highlight);text-align:center;border-radius:.15em;min-width:1.2em;padding-inline:.1em;display:inline-block}