@charset "utf-8";

/* ---------------------------------------------------------------- tokens */
:root{
  --paper:#fcfcfb;
  --panel:#f0f1ed;
  --panel-2:#e8eae4;
  --ink:#171a1d;
  --ink-soft:#535a62;
  --ink-faint:#7c838b;
  --line:#dcded7;
  --line-soft:#e7e9e3;
  --indigo:#1f3a5f;
  --indigo-lite:#375f92;
  --ochre:#8f6520;
  --sel:#dbe6f2;

  --jp:"Hiragino Mincho ProN","Yu Mincho","YuMincho","Noto Serif JP","Source Han Serif JP","IPAexMincho",serif;
  --lat:"Charis SIL","Gentium Plus","Noto Serif","Times New Roman",serif;
  --ui:"Hiragino Sans","Yu Gothic","Noto Sans JP",system-ui,sans-serif;

  --measure:44rem;
  --rail-h:2.6rem;
}

@media (prefers-color-scheme:dark){
  :root{
    --paper:#14161a; --panel:#1b1e23; --panel-2:#22262c;
    --ink:#e7e6e1; --ink-soft:#b3b7bd; --ink-faint:#8b9098;
    --line:#2c3037; --line-soft:#23272d;
    --indigo:#9dbde0; --indigo-lite:#b8d1ee; --ochre:#c9a25e; --sel:#28313d;
  }
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--jp);font-size:17px;line-height:1.95;
  font-feature-settings:"palt" 0;
}
::selection{background:var(--sel)}
a{color:var(--indigo);text-underline-offset:.18em;text-decoration-thickness:.05em}
a:hover{color:var(--indigo-lite)}
:focus-visible{outline:2px solid var(--indigo);outline-offset:2px;border-radius:2px}
img{max-width:100%}

.skip{position:absolute;left:-9999px}
.skip:focus{left:.5rem;top:.5rem;z-index:50;background:var(--paper);padding:.5rem .8rem;border:1px solid var(--line)}

/* ------------------------------------------------------------- masthead */
.masthead{
  position:sticky;top:0;z-index:30;background:var(--paper);
  border-bottom:1px solid var(--line);
}
.mast-inner{
  max-width:78rem;margin:0 auto;padding:.55rem 1.1rem;
  display:flex;align-items:center;gap:1.2rem;
}
.backlink{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:.35rem;
  font-family:var(--ui);font-size:.78rem;letter-spacing:.06em;line-height:1;
  text-decoration:none;color:var(--ink-soft);background:var(--panel);
  border:1px solid var(--line);border-radius:2px;padding:.42rem .7rem;
  white-space:nowrap;transition:background .15s,border-color .15s,color .15s;
}
.backlink:hover{background:var(--panel-2);border-color:var(--ochre);color:var(--ink)}
.bl-arrow{font-family:var(--lat);font-size:.9em;color:var(--ochre)}

.wordmark{display:flex;flex-direction:column;text-decoration:none;color:inherit;line-height:1.25;flex:0 0 auto}
.wm-ja{font-size:.95rem;letter-spacing:.06em}
.wm-en{font-family:var(--lat);font-size:.68rem;letter-spacing:.13em;text-transform:uppercase;color:var(--ink-faint)}
.wordmark:hover .wm-ja{color:var(--indigo)}

.searchbox{position:relative;margin-left:auto;flex:1 1 22rem;max-width:26rem}
#q{
  width:100%;font-family:var(--ui);font-size:.9rem;padding:.45rem .7rem;
  color:var(--ink);background:var(--panel);
  border:1px solid var(--line);border-radius:3px;
}
#q::placeholder{color:var(--ink-faint)}
.results{
  position:absolute;top:calc(100% + .3rem);left:0;right:0;max-height:60vh;overflow:auto;
  background:var(--paper);border:1px solid var(--line);border-radius:3px;
  box-shadow:0 10px 30px rgba(0,0,0,.13);z-index:40;
}
.results a{
  display:flex;align-items:baseline;gap:.6rem;padding:.4rem .7rem;
  text-decoration:none;color:var(--ink);border-bottom:1px solid var(--line-soft);
}
.results a:last-child{border-bottom:0}
.results a:hover,.results a.on{background:var(--panel)}
.results .rhw{font-family:var(--lat);font-size:1rem}
.results .rlet{margin-left:auto;font-family:var(--lat);font-size:.72rem;letter-spacing:.1em;color:var(--ink-faint)}
.results .empty{padding:.6rem .7rem;font-size:.85rem;color:var(--ink-faint)}

.rail{
  display:flex;gap:.1rem;overflow-x:auto;scrollbar-width:none;
  max-width:78rem;margin:0 auto;padding:0 .8rem .35rem;
}
.rail::-webkit-scrollbar{display:none}
.rail a{
  font-family:var(--lat);font-size:.9rem;line-height:1;
  padding:.35rem .5rem;text-decoration:none;color:var(--ink-soft);
  border-bottom:2px solid transparent;white-space:nowrap;
}
.rail a:hover{color:var(--indigo)}
.rail a.on{color:var(--ink);border-bottom-color:var(--ochre)}

/* --------------------------------------------------------------- layout */
.layout{
  max-width:78rem;margin:0 auto;padding:0 1.1rem;
  display:grid;grid-template-columns:15rem minmax(0,1fr);gap:2.6rem;
}
.layout.narrow{grid-template-columns:minmax(0,1fr);max-width:52rem}
main{min-width:0;padding:2.2rem 0 4rem}
.prose,.body,.home p{max-width:var(--measure)}

.sidebar{padding:2.2rem 0 3rem}
.side-details{position:sticky;top:calc(var(--rail-h) + 2.6rem);max-height:78vh;display:flex;flex-direction:column}
.side-h{
  font-family:var(--ui);font-size:.78rem;letter-spacing:.12em;color:var(--ink-faint);
  padding-bottom:.5rem;border-bottom:1px solid var(--line);cursor:pointer;
  display:flex;gap:.6rem;align-items:baseline;list-style:none;
}
.side-h::-webkit-details-marker{display:none}
.side-n{margin-left:auto}
.toc{list-style:none;margin:.6rem 0 0;padding:0 .4rem 0 0;overflow:auto;font-family:var(--lat);font-size:.9rem;line-height:1.55}
.toc li{margin:0 0 .18rem}
.toc a{color:var(--ink-soft);text-decoration:none;display:block}
.toc a:hover{color:var(--indigo);text-decoration:underline}

/* ---------------------------------------------------------------- entry */
.letter-title{
  display:flex;align-items:baseline;gap:.7rem;margin:0 0 2rem;
  padding-bottom:.7rem;border-bottom:1px solid var(--line);
}
.lt-glyph{font-family:var(--lat);font-size:3.2rem;line-height:1;font-weight:400;letter-spacing:.02em}
.lt-label{font-family:var(--ui);font-size:.8rem;letter-spacing:.2em;color:var(--ink-faint)}

.entry{margin:0 0 2.6rem;scroll-margin-top:6rem}
.hw{
  font-family:var(--lat);font-size:1.3rem;font-weight:600;line-height:1.4;
  margin:0 0 .5rem;display:flex;align-items:baseline;gap:.45rem;
}
.hw::before{
  content:"";flex:0 0 auto;width:.42rem;height:.42rem;
  background:var(--ochre);transform:rotate(45deg);translate:0 -.18em;
}
.anchor{
  font-family:var(--lat);font-size:.8rem;color:var(--ink-faint);text-decoration:none;
  opacity:0;transition:opacity .15s;
}
.entry:hover .anchor,.anchor:focus{opacity:1}

.body p{margin:0 0 1em;text-align:justify;line-break:strict;overflow-wrap:anywhere}
.body h3{
  font-family:var(--lat);font-size:1rem;font-weight:600;margin:1.6em 0 .5em;
  padding-left:.55rem;border-left:2px solid var(--line);scroll-margin-top:6rem;
}
.body em{font-style:italic}
.body strong{font-weight:600}
sup.ref{font-size:.62em;line-height:0;vertical-align:.55em;margin:0 .05em}
sup.ref a{text-decoration:none;color:var(--ochre);padding:0 .05em}
sup.ref a:hover{text-decoration:underline}

/* footnotes: two columns, echoing the original setting */
.notes{
  list-style:none;margin:1.1em 0 0;padding:.75em 0 0;border-top:1px solid var(--line);
  font-size:.79rem;line-height:1.75;color:var(--ink-soft);
  columns:2;column-gap:2rem;
}
@media (max-width:820px){.notes{columns:1}}
.note{break-inside:avoid;margin:0 0 .35em;padding-left:1.5em;text-indent:-1.5em}
.notenum{
  font-family:var(--lat);color:var(--ochre);text-decoration:none;
  display:inline-block;min-width:1.3em;text-align:right;margin-right:.35em;
}
.notenum:hover{text-decoration:underline}
.note-plain{padding-left:1.5em;text-indent:0}

/* page markers from the printed edition */
.pagemark{float:right;clear:right;margin:.25em -.4rem .35em 1.2rem}
.pagemark a{
  font-family:var(--lat);font-size:.66rem;letter-spacing:.08em;color:var(--ochre);
  text-decoration:none;border:1px solid var(--line);border-radius:2px;
  padding:.05rem .35rem;background:var(--panel);white-space:nowrap;
}
.pagemark a:hover{border-color:var(--ochre)}
.inline-demo{float:none;margin:0}

.tablewrap{overflow-x:auto;margin:1.4em 0}
table{border-collapse:collapse;font-size:.86rem;line-height:1.6;min-width:34rem}
th,td{border-bottom:1px solid var(--line-soft);padding:.35em .8em .35em 0;text-align:left;vertical-align:top}
th{font-family:var(--ui);font-size:.74rem;letter-spacing:.06em;color:var(--ink-faint);border-bottom-color:var(--line)}

hr{border:0;border-top:1px solid var(--line);margin:2.4rem 0}
ul.plain{padding-left:1.2em;margin:0 0 1em}
ul.plain li{margin:0 0 .3em}

.pager{display:flex;justify-content:space-between;gap:1rem;margin-top:3rem;padding-top:1.2rem;border-top:1px solid var(--line);font-family:var(--lat);font-size:.95rem}
.pager a{text-decoration:none}
.pager a:hover{text-decoration:underline}

.page-title{font-size:1.5rem;letter-spacing:.16em;font-weight:400;margin:0 0 2rem;padding-bottom:.7rem;border-bottom:1px solid var(--line)}
.prose h2{font-size:1.05rem;font-weight:600;margin:2.4em 0 .8em;letter-spacing:.04em}
.prose p{margin:0 0 1.15em;text-align:justify;line-break:strict}

/* ----------------------------------------------------------------- home */
.home{max-width:60rem;margin:0 auto;padding:3.2rem 1.1rem 5rem}
.hero{max-width:44rem}
.eyebrow{font-family:var(--lat);font-size:.74rem;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-faint);margin:0 0 1.1rem}
.hero-title{font-size:clamp(2rem,6vw,3.1rem);line-height:1.3;letter-spacing:.04em;font-weight:400;margin:0}
.hero-en{font-family:var(--lat);font-size:clamp(.95rem,2.4vw,1.15rem);font-style:italic;color:var(--ink-soft);margin:.4rem 0 1.6rem}
.hero-lede{font-size:1rem;color:var(--ink-soft);margin:0 0 1.8rem;text-align:justify}
.hero-cta{display:flex;flex-wrap:wrap;gap:.6rem;margin:0}
.btn{
  font-family:var(--ui);font-size:.85rem;letter-spacing:.06em;text-decoration:none;
  padding:.55rem 1.1rem;border:1px solid var(--indigo);color:var(--paper);background:var(--indigo);border-radius:2px;
}
.btn:hover{background:var(--indigo-lite);border-color:var(--indigo-lite);color:var(--paper)}
.btn.ghost{background:transparent;color:var(--indigo)}
.btn.ghost:hover{background:var(--panel);color:var(--indigo)}

.varna-sec,.notice{margin-top:4rem}
.sec-h{font-size:1rem;font-weight:600;letter-spacing:.1em;margin:0 0 1.2rem;display:flex;flex-wrap:wrap;gap:.9rem;align-items:baseline}
.sec-sub{font-family:var(--ui);font-size:.76rem;font-weight:400;letter-spacing:.02em;color:var(--ink-faint)}

.varna{display:flex;flex-direction:column;gap:.3rem}
.vrow{display:flex;gap:.3rem;flex-wrap:wrap}
.vcell{
  flex:0 0 auto;width:3.4rem;height:3.4rem;border:1px solid var(--line);border-radius:2px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.1rem;
  text-decoration:none;color:var(--ink);background:var(--panel);transition:background .15s,border-color .15s;
}
.vcell:hover{background:var(--panel-2);border-color:var(--ochre);color:var(--ink)}
.vg{font-family:var(--lat);font-size:1.15rem;line-height:1}
.vn{font-family:var(--ui);font-size:.6rem;color:var(--ink-faint);letter-spacing:.04em}
.vcell.off{background:transparent;border-style:dashed;color:var(--ink-faint);opacity:.5}
.vrow-vowel .vcell{background:var(--panel-2)}
@media (max-width:520px){.vcell{width:2.8rem;height:2.8rem}.vg{font-size:1rem}.vn{font-size:.55rem}}

.notice p{color:var(--ink-soft);font-size:.95rem;text-align:justify}
kbd{font-family:var(--ui);font-size:.78em;border:1px solid var(--line);border-bottom-width:2px;border-radius:3px;padding:0 .35em;background:var(--panel)}

/* --------------------------------------------------------------- footer */
.foot{border-top:1px solid var(--line);margin-top:2rem;padding:2rem 1.1rem 3.5rem;background:var(--panel)}
.foot p{max-width:52rem;margin:0 auto .6rem;font-size:.8rem;line-height:1.8;color:var(--ink-faint)}
.foot-meta{font-family:var(--ui);letter-spacing:.06em}

/* -------------------------------------------------------------- responsive */
@media (max-width:700px){
  .body p,.prose p,.hero-lede,.notice p{text-align:left}
}

@media (max-width:900px){
  body{font-size:16px}
  .layout{grid-template-columns:minmax(0,1fr);gap:0}
  .sidebar{padding:1.6rem 0 0;order:-1}
  .side-details{position:static;max-height:none}
  .side-details[open] .toc{max-height:40vh}
  main{padding-top:1.6rem}
  .mast-inner{flex-wrap:wrap;gap:.5rem}
  .searchbox{flex:1 1 100%;max-width:none;margin-left:0}
  .wm-ja{font-size:.9rem}
  .backlink{font-size:.72rem;padding:.35rem .55rem;order:-1}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none!important;scroll-behavior:auto!important}
}

@media print{
  .masthead,.sidebar,.pager,.backlink,.foot-meta,.anchor{display:none}
  body{background:#fff;color:#000;font-size:10.5pt}
  .layout{display:block;max-width:none;padding:0}
  .entry{break-inside:avoid}
  a{color:#000;text-decoration:none}
}