/* ============================================================
   HANRIA — 和 design system
   Paper default · 朱 shu the only chromatic accent · 藍 ai links
   Tate-gaki · hanko · mincho display · 麻の葉 · 74–78ch measure
   ============================================================ */

:root{
  --sky:#CFE3F7;
  --cloud-pink:#F7C6EC;
  --magenta:#E0409F;
  --magenta-text:#A51F6D;
  --seal-vermilion:#C43D1A;
  --paper:#FFF8F4;
  --ink:#16141A;
  --ground:var(--paper);
  --panel:#FBEAF3;
  --card:#FFFCFA;
  --type:var(--ink);
  --type-2:#514A55;
  --shu:var(--seal-vermilion);
  --shu-ink:#9B2C10;
  --hairline:#AFA5B2;
  --ai:var(--magenta-text);
  --sumi:var(--type);      /* deprecated alias of --type */
  --sumi-2:var(--type-2);
  --washi:var(--ground);   /* deprecated alias of --ground */
  --washi-2:var(--panel);
  --mincho:"Noto Serif CJK JP","Noto Serif JP","Source Han Serif JP","Hiragino Mincho ProN","Yu Mincho","Noto Serif",Georgia,serif;
  --sans:"Noto Sans CJK JP","Noto Sans JP","Hiragino Sans",ui-sans-serif,system-ui,sans-serif;
  --mono:"JetBrains Mono","CaskaydiaCove Nerd Font",ui-monospace,"Noto Sans Mono","DejaVu Sans Mono",monospace;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;max-width:100%;overflow-x:clip;background:var(--ground)}
body{
  margin:0;max-width:100%;overflow-x:clip;background:var(--ground);color:var(--type);
  font:16px/1.9 var(--sans);-webkit-font-smoothing:antialiased;
}

/* 麻の葉 asanoha lattice behind the hero block only (~7%) */
main.wrap::after{
  content:"";position:absolute;top:-40px;right:-40px;width:340px;height:420px;z-index:-1;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='80' height='139' viewBox='0 0 80 139'><g fill='none' stroke='%231a1714' stroke-width='1'><path d='M40 0 L80 23 L80 69 L40 92 L0 69 L0 23 Z'/><path d='M40 0 L40 92 M0 23 L80 69 M80 23 L0 69'/><path d='M40 46 L0 23 M40 46 L80 23 M40 46 L0 69 M40 46 L80 69'/><path d='M40 92 L80 115 L80 139 M40 92 L0 115 L0 139'/></g></svg>");
  background-size:110px 191px;
  opacity:.07;pointer-events:none;
  -webkit-mask-image:radial-gradient(70% 70% at 80% 20%, #000, transparent 72%);
  mask-image:radial-gradient(70% 70% at 80% 20%, #000, transparent 72%);
}

/* ---------- layout: asymmetric, with a vertical rule in the left margin ---------- */
.wrap{max-width:74ch;margin:0 auto;padding:0 30px}
@media(min-width:860px){
  .wrap{max-width:78ch;padding-left:78px}
  main.wrap::before{
    content:"";position:absolute;left:calc(50% - 39ch - 2px);top:0;bottom:0;
    width:1px;background:linear-gradient(to bottom,transparent,var(--hairline) 8%,var(--hairline) 92%,transparent);
  }
  main.wrap{position:relative}
}

/* ---------- 判子 hanko seal ---------- */
.seal{
  display:inline-flex;align-items:center;justify-content:center;
  width:52px;height:auto;min-height:70px;flex:0 0 52px;overflow:visible;
  background:var(--shu);color:#fdf8f2;border-radius:5px;
  font:700 10px/1.1 var(--mono);letter-spacing:.08em;
  writing-mode:vertical-rl;text-orientation:upright;
  padding:5px 2px;box-shadow:0 0 0 1px rgba(0,0,0,.06) inset;
  position:relative;
}
.seal::after{
  content:"";position:absolute;inset:3px;border:1px solid rgba(253,248,242,.42);border-radius:2px;
}

/* ---------- header ---------- */
header.site{padding:30px 0 0}
header.site .row{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.mark{font:600 20px/1 var(--mono);letter-spacing:.3em;padding-left:.3em}
.status{
  font:500 10.5px/1 var(--mono);letter-spacing:.2em;text-transform:uppercase;
  color:var(--shu);border:1px solid var(--shu);padding:6px 9px;border-radius:2px;
}
.langs{margin-left:auto;display:flex;gap:16px;font-size:13.5px}
.langs a{color:var(--type-2);text-decoration:none;padding-bottom:3px;border-bottom:2px solid transparent}
.langs a:hover{color:var(--type)}
.langs a[aria-current]{color:var(--shu);border-bottom-color:var(--shu)}
.rule{height:1px;background:var(--hairline);margin-top:26px}

/* ---------- banner: noren-like band ---------- */
.banner{
  background:var(--panel);border-block:1px solid var(--hairline);
  padding:15px 0;font-size:14.5px;
}
.banner strong{color:var(--shu-ink)}

/* ---------- 縦書き tate-gaki section labels in the left margin ---------- */
main{padding-top:20px;position:relative;z-index:1}
header.site,.banner,footer.site{position:relative;z-index:1}
section{position:relative;padding-bottom:8px}
.kicker{
  color:var(--shu);font:500 11.5px/1 var(--mono);letter-spacing:.26em;
  text-transform:uppercase;margin:5.2em 0 1.1em;
  display:flex;align-items:center;gap:12px;
}
/* narrow: a vermillion tick stands in for the vertical rule */
.kicker::before{
  content:"";flex:0 0 22px;height:1px;background:var(--shu);
}
@media(min-width:860px){
  .kicker{
    position:absolute;left:-78px;top:5.6em;margin:0;
    writing-mode:vertical-rl;text-orientation:mixed;
    letter-spacing:.34em;text-transform:none;font-size:11px;
    max-height:22em;white-space:nowrap;
  }
  .kicker::before{
    content:"";display:block;width:1px;height:26px;background:var(--shu);
    margin:0 auto 14px;
  }
  section,main>p.kicker{scroll-margin-top:40px}
}

/* ---------- display type: mincho ---------- */
h1{
  font-family:var(--mincho);font-weight:400;
  font-size:clamp(32px,5.8vw,52px);line-height:1.45;letter-spacing:.03em;
  margin:.55em 0 .5em;
}
h2{
  font-family:var(--mincho);font-weight:400;
  font-size:clamp(21px,3.2vw,30px);line-height:1.55;letter-spacing:.02em;margin:0 0 .65em;
}
h3{font-size:16px;font-weight:600;margin:1.9em 0 .28em;letter-spacing:.02em}
.lede{font-size:18px;color:var(--type-2);line-height:1.95}
p{margin:.9em 0}

/* ---------- 一二三四五 — kanji-numbered steps ---------- */
ol.steps{list-style:none;counter-reset:s;padding:0;margin:1.8em 0}
ol.steps li{
  counter-increment:s;display:grid;grid-template-columns:38px 1fr;gap:0 22px;
  padding:0 0 1.9em 0;align-items:start;
}
ol.steps li::before{
  content:counter(s,decimal);
  font-family:var(--mincho);font-size:26px;line-height:1.15;color:var(--shu);
  text-align:center;border-right:1px solid var(--hairline);padding-right:22px;
  grid-row:span 2;
}
ol.steps h3{margin:0 0 .22em;grid-column:2}
ol.steps p{margin:0;color:var(--type-2);font-size:15px;grid-column:2}

/* ---------- cards: shoji grid (prose, not program output) ---------- */
.grid{display:grid;gap:1px;background:var(--hairline);border:1px solid var(--hairline);margin:1.9em 0}
@media(min-width:620px){.grid{grid-template-columns:1fr 1fr}}
.card{background:var(--card);padding:22px 24px}
.card h3{margin:0 0 .38em}
.card p{margin:0;font-size:15px;color:var(--type-2)}

/* ---------- bounds ---------- */
.bounds{list-style:none;padding:0;margin:1.6em 0;border-top:1px solid var(--hairline)}
.bounds li{
  border-bottom:1px solid var(--hairline);padding:15px 0 15px 26px;
  font-size:15px;color:var(--type-2);position:relative;
}
.bounds li::before{content:"・";position:absolute;left:2px;color:var(--shu);font-size:15px}
.bounds strong{color:var(--type)}

/* ---------- details ---------- */
details{border-bottom:1px solid var(--hairline);padding:17px 0}
details summary{cursor:pointer;font-weight:600;font-size:16px;list-style:none}
details summary::-webkit-details-marker{display:none}
details summary::before{content:"＋";color:var(--shu);margin-right:12px;font-size:13px}
details[open] summary::before{content:"−"}
details p{color:var(--type-2);font-size:15px;margin:.75em 0 0 26px}

/* ---------- footer ---------- */
footer.site{
  border-top:1px solid var(--hairline);margin-top:5.5em;
  padding:34px 0 64px;font-size:13.5px;color:var(--type-2);
}
footer.site .row{display:flex;align-items:center;gap:14px;margin-bottom:1.1em}
footer.site .mark{font-size:15px;color:var(--type)}

/* ---------- links: indigo only ---------- */
main a,footer.site a,.bounds a,.banner a{
  color:var(--ai);text-decoration:none;
  border-bottom:1px solid color-mix(in srgb,var(--ai) 28%,transparent);
}
main a:hover,footer.site a:hover,.bounds a:hover,.banner a:hover{border-bottom-color:var(--ai)}

/* ---------- code: install/command output is a hard frame ---------- */
pre.code{
  background:var(--card);border:2px solid var(--type);border-radius:0;
  padding:17px 19px;overflow-x:auto;font:13.5px/1.75 var(--mono);margin:1.5em 0;
}
code{font:.92em/1 var(--mono);background:var(--card);border:1px solid var(--hairline);padding:2px 5px;border-radius:3px}
pre.code code{background:none;border:0;padding:0}

/* ---------- CJK pages ---------- */
:lang(ja),:lang(zh),:lang(ko){line-height:2.05}
:lang(ja) h1,:lang(zh) h1,:lang(ko) h1{letter-spacing:.06em;line-height:1.62}
:lang(ja) h2,:lang(zh) h2,:lang(ko) h2{letter-spacing:.05em;line-height:1.7}
:lang(ja) .kicker,:lang(zh) .kicker,:lang(ko) .kicker{text-transform:none;letter-spacing:.2em}
:lang(ja) ol.steps li::before,:lang(zh) ol.steps li::before,:lang(ko) ol.steps li::before{content:counter(s,cjk-decimal)}
.open-q{color:var(--type-2);font-weight:400}

/* ---------- three-column state cards: program-output geometry ---------- */
@media(min-width:900px){.grid.three{grid-template-columns:1fr 1fr 1fr}}
.grid.three{
  gap:10px;background:transparent;border:0;
}
.grid.three .card{
  border:2px solid var(--type);border-radius:0;
}
.grid.three .card p{font-size:14.5px}
.meta{font-size:15px;color:var(--type-2);margin:.9em 0 0}

@media(max-width:760px){
  main.wrap::after{display:none}
}