/* waganse.jp
   Palette: 白磁 Hakuji #FAFAF7, 墨 Sumi #23262B, 藍 Ai #2B4C7E,
   卵 Tamago #F2C230, 若竹 Wakatake #5FA38A, 方眼 Hougan #DCE3EC (grid lines) */
:root{
  --hakuji:#FAFAF7; --sumi:#23262B; --ai:#2B4C7E; --tamago:#F2C230; --wakatake:#5FA38A;
  --hougan:#DCE3EC; --sub:#5C636E;
  --maru:"Zen Maru Gothic","Hiragino Maru Gothic ProN","BIZ UDGothic",sans-serif;
  --kaku:"Zen Kaku Gothic New","Hiragino Sans","Noto Sans JP","Yu Gothic",Meiryo,sans-serif;
  --measure:38em; --wide:70rem;
  --grid:linear-gradient(var(--hougan) 1px,transparent 1px) 0 0/24px 24px,linear-gradient(90deg,var(--hougan) 1px,transparent 1px) 0 0/24px 24px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--hakuji);color:var(--sumi);font:400 1.0625rem/1.9 var(--kaku);letter-spacing:.01em;line-break:strict;overflow-wrap:anywhere}
a{color:var(--ai);text-decoration-thickness:1px;text-underline-offset:.25em}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--ai);outline-offset:3px;border-radius:2px}
.skip{position:absolute;left:-999px;top:0;background:var(--sumi);color:#fff;padding:.5rem 1rem;z-index:20}
.skip:focus{left:1rem;top:1rem}
svg{max-width:100%}

/* masthead */
.masthead{background:#fff;border-bottom:3px solid var(--sumi)}
.mast-in{max-width:var(--wide);margin:0 auto;padding:1.1rem clamp(1rem,4vw,2rem) .5rem}
.logo{display:inline-flex;align-items:baseline;flex-wrap:wrap;gap:.2rem 1rem;text-decoration:none;color:var(--sumi)}
.logo-w{font:700 1.9rem/1.1 var(--maru);letter-spacing:.01em}
.logo-w::after{content:"";display:inline-block;width:.42em;height:.42em;border-radius:50%;background:var(--tamago);border:2px solid var(--sumi);margin-left:.18em;vertical-align:.05em}
.logo-t{font:500 .9rem/1.4 var(--maru);color:var(--sub)}
.gnav{max-width:var(--wide);margin:0 auto;padding:0 clamp(1rem,4vw,2rem)}
.gnav ul{list-style:none;margin:0;padding:0;display:flex;gap:0 1.6rem;overflow-x:auto;scrollbar-width:none}
.gnav li{flex:none}
.gnav a{display:block;padding:.55rem 0 .6rem;font:500 .95rem/1.4 var(--maru);color:var(--sumi);text-decoration:none;border-bottom:4px solid transparent}
.gnav a:hover{border-bottom-color:var(--hougan)}
.gnav a[aria-current="page"]{border-bottom-color:var(--tamago)}

main{display:block}

/* hero on graph paper */
.hero{background:var(--grid),var(--hakuji);border-bottom:3px solid var(--sumi)}
.hero-in{max-width:var(--wide);margin:0 auto;padding:3.2rem clamp(1rem,4vw,2rem) 2.6rem;display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:2rem 3rem;align-items:end}
.hero h1{font:700 clamp(2rem,4.2vw,3.2rem)/1.35 var(--maru);margin:0 0 1.2rem;letter-spacing:.04em}
.lede{max-width:26em;background:var(--hakuji);padding:.4rem .8rem .4rem 0}
.lede p{margin:0 0 .8rem}
.hero-fig{margin:0}
.hero-fig svg{display:block;width:100%;height:auto}

/* guide tiles with sticky-note tabs */
.shelf,.promise{max-width:var(--wide);margin:0 auto;padding:3rem clamp(1rem,4vw,2rem) 0}
.shelf>h2,.promise h2,.more h2{font:700 1.35rem/1.4 var(--maru);margin:0 0 2.2rem}
.tiles{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:2.8rem 2rem}
.tile{position:relative;background:#fff;border:2.5px solid var(--sumi);border-radius:4px;padding:1.6rem 1.4rem 1.3rem;display:grid;grid-template-columns:minmax(0,1fr) 3.2rem;column-gap:1rem}
.tile:focus-within{outline:3px solid var(--ai);outline-offset:4px}
.tile-tab{position:absolute;top:-1.05rem;left:1.1rem;font:700 .82rem/1 var(--maru);padding:.42rem .8rem .5rem;border:2.5px solid var(--sumi);border-radius:4px 4px 0 0;background:var(--tamago)}
.tab-green .tile-tab{background:#BFE0D3}
.tab-blue .tile-tab{background:#CFDAEC}
.tab-pink .tile-tab{background:#F6D3D9}
.tile .ico{grid-column:2;grid-row:1/3;width:3.2rem;height:3.2rem}
.tile h3{grid-column:1;grid-row:1;margin:0 0 .5rem;font:700 1.15rem/1.55 var(--maru)}
.tile h3 a{color:var(--sumi);text-decoration:none}
.tile h3 a::after{content:"";position:absolute;inset:0}
.tile h3 a:focus-visible{outline:none}
.tile:hover h3 a{text-decoration:underline;text-decoration-color:var(--tamago);text-decoration-thickness:3px}
.tile p{grid-column:1;grid-row:2;margin:0;font-size:.95rem;line-height:1.8;color:var(--sub)}
.promise{padding-bottom:4rem}
.promise p{max-width:var(--measure);margin:0}

/* article */
.page-head{background:var(--grid),var(--hakuji);border-bottom:3px solid var(--sumi)}
.page-head-in{max-width:46rem;margin:0 auto;padding:2.8rem clamp(1rem,4vw,2rem) 2.2rem}
.page-head .ico{width:3.4rem;height:3.4rem;display:block;margin-bottom:.8rem}
.page-head h1{font:700 clamp(1.6rem,3.6vw,2.4rem)/1.5 var(--maru);margin:0 0 1rem;letter-spacing:.03em}
.standfirst{margin:0 0 .8rem;font-size:1.08rem;max-width:var(--measure);background:var(--hakuji)}
.meta{margin:0;font-size:.85rem;color:var(--sub);display:inline-block;background:var(--hakuji)}
.prose{max-width:46rem;margin:0 auto;padding:2.6rem clamp(1rem,4vw,2rem) 1rem}
.prose>*{max-width:var(--measure)}
.prose h2{font:700 1.3rem/1.55 var(--maru);margin:2.8rem 0 1rem;padding:.1rem 0 .1rem .8rem;border-left:6px solid var(--tamago)}
.prose h3{font:700 1.08rem/1.6 var(--maru);margin:2rem 0 .6rem}
.prose p,.prose ul,.prose ol{margin:0 0 1.2rem}
.prose ul,.prose ol{padding-left:1.4em}
.prose li{margin:0 0 .4rem}
.prose li::marker{color:var(--ai)}
.prose strong{font-weight:700;background:linear-gradient(transparent 64%,#F7DE8A 64%)}
.prose table{width:100%;max-width:100%;border-collapse:collapse;margin:1.6rem 0;font-size:.93rem;line-height:1.7;display:block;overflow-x:auto}
.prose th,.prose td{border:1.5px solid var(--sumi);padding:.55rem .75rem;text-align:left;vertical-align:top;min-width:7em}
.prose thead th{background:#FCEFC0;font-family:var(--maru);font-weight:700}
.prose blockquote{margin:1.6rem 0;padding:1rem 1.2rem;background:#fff;border:2px dashed var(--wakatake);border-radius:4px}
.prose blockquote p{margin:0}
.more{max-width:46rem;margin:0 auto;padding:2rem clamp(1rem,4vw,2rem) 4rem}
.more>*{max-width:var(--measure)}
.more h2{margin-bottom:1rem;padding-top:2rem;border-top:2px dashed var(--hougan)}
.more ul{margin:0;padding-left:1.2em}
.more li{margin:0 0 .5rem}

/* footer */
.foot{background:var(--sumi);color:#E9ECEF;margin-top:1rem}
.foot-in{max-width:var(--wide);margin:0 auto;padding:2.2rem clamp(1rem,4vw,2rem) 2.6rem;font-size:.88rem;line-height:1.8}
.foot-in p{margin:0 0 .8rem;max-width:40em}
.foot-links{display:flex;flex-wrap:wrap;gap:.3rem 1.6rem}
.foot a{color:#fff}
.foot :focus-visible{outline-color:var(--tamago)}

@media (max-width:900px){
  .hero-in{grid-template-columns:1fr;padding-top:2.4rem}
  .tiles{grid-template-columns:1fr}
}
@media (max-width:480px){
  body{font-size:1rem}
  .logo-w{font-size:1.6rem}
  .tile{padding:1.5rem 1.1rem 1.2rem;grid-template-columns:minmax(0,1fr) 2.6rem}
  .tile .ico{width:2.6rem;height:2.6rem}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}