:root{color-scheme:light;--page:#fffcf0;--ink:#242321;--green:#226b61;--muted:#646258;--line:#d8d4c6;background:var(--page);color:var(--ink);font:16px/1.55 -apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif}
*{box-sizing:border-box}
[hidden]{display:none!important}
body,figure,h1,h2,p{margin:0}
main{--gutter:clamp(12px,2.4vw,32px);max-width:1064px;margin:auto;padding:0 clamp(16px,4vw,48px) 40px}
header,nav,.actions,.grid-control{display:flex;align-items:center}
header{justify-content:space-between;min-height:64px;gap:10px;border-bottom:1px solid var(--line)}
.brand{font:clamp(18px,4.3vw,24px) Georgia,serif;letter-spacing:-.06em;white-space:nowrap}
nav{gap:14px}
button,a,.grid-control,summary{cursor:pointer}
button,a{font:inherit;color:var(--green);text-underline-offset:3px}
button{border:0;background:none;padding:0}
nav a,nav button,.grid-control,#cancel{min-height:44px;display:inline-flex;align-items:center;font-size:.84rem}
#record{gap:6px}
#total,.muted{color:var(--muted);font-variant-numeric:tabular-nums}
#languageSwitch{text-decoration:underline}
section{max-width:740px;margin:clamp(18px,4vw,38px) auto 0}
#lesson,.comparison,.reference-tools{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:var(--gutter)}
#lesson{max-width:none;margin-top:clamp(16px,3.6vw,40px);align-items:start}
#lesson>*:not(#task):not(#next){grid-column:1/-1}
.reference-tools{align-items:center}
.reference-tools label{justify-self:end}
.meta{color:var(--green);font-size:.82rem;font-variant-numeric:tabular-nums}
h1{font-family:Georgia,"Hiragino Mincho ProN","Yu Mincho",serif;font-size:clamp(1.8rem,4.5vw,3.25rem);line-height:1.14;letter-spacing:-.035em;overflow-wrap:anywhere}
#title{margin:0 0 clamp(20px,3.2vw,32px)}
figure{min-width:0}
figcaption{border-top:1px solid var(--ink);padding:8px 0;color:var(--ink);font-size:clamp(.78rem,1.5vw,.93rem);font-weight:600}
.plate{position:relative;container-type:inline-size;background:#fffdf5;box-shadow:0 0 0 1px var(--line) inset}
canvas{display:block;width:100%;height:auto}
.gridded .plate::after{content:"";position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(to right,#38796c77 1px,transparent 1px),linear-gradient(to bottom,#38796c77 1px,transparent 1px);background-size:10cqw 10cqw}
#task,#next{margin-top:clamp(16px,2.4vw,28px)}
#task{grid-column:1;line-height:1.65;text-wrap:pretty}
#next{grid-column:2;justify-self:start}
@media(max-width:640px){
 #task{grid-column:1/-1}
 #next{margin-top:16px;justify-self:stretch}
}
.actions{justify-content:space-between;gap:12px;margin-top:12px}
.grid-control{gap:7px;color:var(--muted)}
input[type=checkbox]{accent-color:var(--green);width:16px;height:16px}
.primary{background:var(--green);color:white;border-radius:5px;min-height:44px;padding:9px 16px}
:focus-visible{outline:2px solid var(--green);outline-offset:3px}
button:disabled{opacity:.55}
.muted,#warning{font-size:.88rem;margin-top:10px}
#rows{margin-top:20px}
details{border-top:1px solid var(--line)}
summary{padding:13px 0;font-weight:600}
ol{padding:0;margin:0;list-style:none}
li a,li .unreleased{display:flex;align-items:center;gap:10px;padding:12px 0;text-decoration:none;color:inherit}
li small{font-size:.8rem;color:var(--muted);font-variant-numeric:tabular-nums}
li .status{margin-left:auto;white-space:nowrap;color:var(--green)}
dialog{width:min(360px,calc(100% - 32px));color:var(--ink);background:var(--page);border:1px solid var(--line);border-radius:7px;padding:22px}
dialog::backdrop{background:#25251f60}
dialog h2{font-size:1.25rem;margin-bottom:14px}
dialog label{display:block}
#minutes{width:100%;padding:8px;margin:5px 0;font:inherit;border:1px solid var(--line);border-radius:4px}
#graduation canvas{margin:16px 0}
@media(max-width:430px){main{padding-inline:14px}header{min-height:54px;flex-wrap:wrap}nav{gap:9px;margin-left:auto}nav button,nav a{font-size:.78rem}}

.chapter-range{margin-inline-start:.4em;font-size:.8rem;font-weight:400;color:var(--muted);white-space:nowrap}

:root.ink-edition{--page:#fff;--ink:#242424;--muted:#606060;--line:#d6d6d6}
.ink-edition .plate{background:#fff}

.unreleased,.unreleased .status{color:var(--muted)}

.plate{overflow:hidden}
.plate img{display:block;width:200%;max-width:none;height:auto}
#ref{transform:translateX(-50%)}