@import "https://fonts.googleapis.com/css2?family=Inter:wght@200;300;400;700&family=Sometype+Mono:wght@400&display=swap";
@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after,::backdrop{--tw-rotate-x:initial;--tw-rotate-y:initial;--tw-rotate-z:initial;--tw-skew-x:initial;--tw-skew-y:initial;--tw-border-style:solid;--tw-leading:initial;--tw-ordinal:initial;--tw-slashed-zero:initial;--tw-numeric-figure:initial;--tw-numeric-spacing:initial;--tw-numeric-fraction:initial;--tw-blur:initial;--tw-brightness:initial;--tw-contrast:initial;--tw-grayscale:initial;--tw-hue-rotate:initial;--tw-invert:initial;--tw-opacity:initial;--tw-saturate:initial;--tw-sepia:initial;--tw-drop-shadow:initial;--tw-drop-shadow-color:initial;--tw-drop-shadow-alpha:100%;--tw-drop-shadow-size:initial;--tw-backdrop-blur:initial;--tw-backdrop-brightness:initial;--tw-backdrop-contrast:initial;--tw-backdrop-grayscale:initial;--tw-backdrop-hue-rotate:initial;--tw-backdrop-invert:initial;--tw-backdrop-opacity:initial;--tw-backdrop-saturate:initial;--tw-backdrop-sepia:initial}}}@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--radius-lg:.5rem;--radius-xl:.75rem;--blur-md:12px;--blur-xl:24px;--default-transition-duration:.15s;--default-transition-timing-function:cubic-bezier(.4, 0, .2, 1);--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.pointer-events-none{pointer-events:none}.visible{visibility:visible}.absolute{position:absolute}.fixed{position:fixed}.relative{position:relative}.static{position:static}.-inset-2{inset:calc(var(--spacing) * -2)}.inset-0{inset:calc(var(--spacing) * 0)}.start{inset-inline-start:var(--spacing)}.end{inset-inline-end:var(--spacing)}.top-0{top:calc(var(--spacing) * 0)}.right-0{right:calc(var(--spacing) * 0)}.bottom-0{bottom:calc(var(--spacing) * 0)}.left-0{left:calc(var(--spacing) * 0)}.z-10{z-index:10}.z-40{z-index:40}.z-50{z-index:50}.z-\[70\]{z-index:70}.container{width:100%}@media (min-width:40rem){.container{max-width:40rem}}@media (min-width:48rem){.container{max-width:48rem}}@media (min-width:64rem){.container{max-width:64rem}}@media (min-width:80rem){.container{max-width:80rem}}@media (min-width:96rem){.container{max-width:96rem}}.mx-auto{margin-inline:auto}.block{display:block}.flex{display:flex}.grid{display:grid}.hidden{display:none}.inline-block{display:inline-block}.table{display:table}.h-11{height:calc(var(--spacing) * 11)}.h-full{height:100%}.h-px{height:1px}.w-full{width:100%}.transform{transform:var(--tw-rotate-x,) var(--tw-rotate-y,) var(--tw-rotate-z,) var(--tw-skew-x,) var(--tw-skew-y,)}.cursor-pointer{cursor:pointer}.resize{resize:both}.items-center{align-items:center}.justify-center{justify-content:center}.truncate{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.overflow-hidden{overflow:hidden}.overflow-visible{overflow:visible}.overflow-y-auto{overflow-y:auto}.rounded-lg{border-radius:var(--radius-lg)}.rounded-xl{border-radius:var(--radius-xl)}.border{border-style:var(--tw-border-style);border-width:1px}.bg-\[\#272727\]\/10{background-color:#2727271a;background-color:lab(15.638% .0000149012 0/.1)}.bg-\[\#f8f5ef\]\/60{background-color:#f8f5ef99;background-color:lab(96.6469% .264138 3.26819/.6)}.bg-transparent{background-color:#0000}.object-cover{object-fit:cover}.p-0{padding:calc(var(--spacing) * 0)}.text-left{text-align:left}.text-right{text-align:right}.font-mono{font-family:var(--font-mono)}.text-\[clamp\(14px\,1\.65vw\,22px\)\]{font-size:clamp(14px,1.65vw,22px)}.leading-none{--tw-leading:1;line-height:1}.text-\[\#1a1a1a\]{color:#1a1a1a}.capitalize{text-transform:capitalize}.lowercase{text-transform:lowercase}.uppercase{text-transform:uppercase}.tabular-nums{--tw-numeric-spacing:tabular-nums;font-variant-numeric:var(--tw-ordinal,) var(--tw-slashed-zero,) var(--tw-numeric-figure,) var(--tw-numeric-spacing,) var(--tw-numeric-fraction,)}.underline{text-decoration-line:underline}.placeholder-\[\#1a1a1a\]\/25::placeholder{color:#1a1a1a40;color:lab(9.26318% 0 0/.25)}.filter{filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.backdrop-blur-md{--tw-backdrop-blur:blur(var(--blur-md));-webkit-backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,);backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,)}.backdrop-blur-xl{--tw-backdrop-blur:blur(var(--blur-xl));-webkit-backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,);backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,)}.backdrop-filter{-webkit-backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,);backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,)}.transition{transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to,opacity,box-shadow,transform,translate,scale,rotate,filter,-webkit-backdrop-filter,backdrop-filter,display,content-visibility,overlay,pointer-events;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.outline-none{--tw-outline-style:none;outline-style:none}.select-none{-webkit-user-select:none;user-select:none}}:root{--bg:#f8f5ef;--grid-line:#a82511;--title-dark:#272727;--title-red:#f1614b;--menu-text:#1a1a1a;--accent:#a82511;--accent-light:#f1614b;--brown:#5e4c4a;--white:#fff;--site-cursor:url(/cursors/pawn-small.png) 5 6}*{box-sizing:border-box;margin:0;padding:0}html,body{width:100%;min-height:100%;color:var(--menu-text);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;cursor:var(--site-cursor), auto;background:#272727;font-family:Inter,system-ui,sans-serif;overflow:hidden}body{justify-content:center;align-items:center;min-height:100vh;display:flex}a,button,[role=button],.cursor-pointer{cursor:var(--site-cursor), pointer}input,textarea,select{cursor:var(--site-cursor), text}.square-container{background:var(--bg);width:min(100vw,100vh);height:min(100vw,100vh);margin:0 auto;position:relative}.grid-line{stroke:var(--grid-line);stroke-width:1px}.vtite-title{text-transform:uppercase;letter-spacing:0;color:var(--title-dark);font-family:Inter,sans-serif;font-size:clamp(32px,13.89vw,250px);font-weight:700;line-height:1}.menu-item{text-transform:uppercase;color:var(--menu-text);cursor:var(--site-cursor), pointer;font-family:Sometype Mono,monospace;font-size:clamp(10px,2.78vw,50px);font-weight:400}.menu-item-large{font-size:clamp(12px,3.56vw,64px)}.opening-menu-button{transition:none}.opening-menu-label{color:#1a1a1a;transition:none}.opening-menu-button:hover .opening-menu-label{color:#1a1a1a94}.detail-chess-link{cursor:var(--site-cursor), pointer}.detail-chess-link-label{color:#fff;transition:none}.detail-download-link-label{color:#fff;font-family:Sometype Mono,monospace;font-size:inherit;text-decoration-skip-ink:none;text-underline-offset:auto;text-underline-position:from-font;font-style:normal;font-weight:400;line-height:normal;text-decoration-line:underline;text-decoration-style:solid;text-decoration-thickness:auto;transition:none}.detail-chess-link:hover .detail-chess-link-label,.detail-chess-link:hover .detail-download-link-label{color:#ffffffad}.board-layout{justify-content:center;align-items:center;width:100vw;min-height:100vh;display:flex}.board-shell{width:min(100vw,100vh);height:min(100vw,100vh)}.chess-clock{left:max(12px, calc((100vw - var(--board-size)) / 2 - 80px));width:clamp(50px,5vw,68px);position:fixed;top:50%;transform:translateY(-50%)}.protocol-puzzle-hint{z-index:20;color:#272727;pointer-events:none;max-width:280px;font-family:Sometype Mono,monospace;font-size:clamp(14px,1.05vw,20px);font-weight:400;line-height:1.16;position:absolute}.protocol-puzzle-hint-left{width:min(15vw,220px);top:34%;right:calc(100% + 36px);transform:translateY(-50%)}.protocol-puzzle-hint-right{text-align:left;white-space:nowrap;width:min(20vw,280px);top:auto;bottom:18%;left:calc(100% + 36px);transform:none}@media (max-width:700px){.board-layout{padding:max(10px, env(safe-area-inset-top)) 0 max(10px, env(safe-area-inset-bottom));flex-direction:column;gap:10px}.board-shell{width:min(100vw,100vh - 66px);height:min(100vw,100vh - 66px)}.chess-clock{flex:none;width:min(188px,100vw - 24px);position:static;transform:none}.chess-clock-faces{border-radius:8px;grid-template-columns:1fr 1px 1fr;display:grid}.chess-clock-face{height:34px}.chess-clock-divider{width:1px;height:auto}.protocol-puzzle-hint{max-width:none;font-size:clamp(10px,2.75vw,13px);line-height:1.14}.protocol-puzzle-hint-left{width:100%;top:-40px;left:0;right:auto;transform:none}.protocol-puzzle-hint-right{text-align:right;width:100%;inset:calc(100% + 8px) 0 auto auto;transform:none}}@media (max-width:700px) and (max-height:520px){.protocol-puzzle-hint{font-size:10px}.protocol-puzzle-hint-left{top:-30px}.protocol-puzzle-hint-right{top:calc(100% + 5px)}}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-leading{syntax:"*";inherits:false}@property --tw-ordinal{syntax:"*";inherits:false}@property --tw-slashed-zero{syntax:"*";inherits:false}@property --tw-numeric-figure{syntax:"*";inherits:false}@property --tw-numeric-spacing{syntax:"*";inherits:false}@property --tw-numeric-fraction{syntax:"*";inherits:false}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-backdrop-blur{syntax:"*";inherits:false}@property --tw-backdrop-brightness{syntax:"*";inherits:false}@property --tw-backdrop-contrast{syntax:"*";inherits:false}@property --tw-backdrop-grayscale{syntax:"*";inherits:false}@property --tw-backdrop-hue-rotate{syntax:"*";inherits:false}@property --tw-backdrop-invert{syntax:"*";inherits:false}@property --tw-backdrop-opacity{syntax:"*";inherits:false}@property --tw-backdrop-saturate{syntax:"*";inherits:false}@property --tw-backdrop-sepia{syntax:"*";inherits:false}