:root{
  --bg:#F6F4EC;
  --bg-alt:#ECE7D8;
  --surface:#FFFFFF;
  --hairline:#DEDACB;
  --ink:#1C2233;
  --ink-muted:#5B6172;
  --cobalt:#2B45D6;
  --cobalt-hover:#1F34AC;
  --sage:#3D7A5C;
  --cobalt-tint:rgba(43,69,214,0.08);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"Noto Sans JP","Hiragino Sans","Yu Gothic UI",sans-serif;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
.mono{font-family:"IBM Plex Mono",ui-monospace,Consolas,monospace;}
a{color:var(--cobalt);}
img{max-width:100%;display:block;}

.wrap{max-width:760px;margin:0 auto;padding:0 20px;}
.wrap-wide{max-width:1000px;margin:0 auto;padding:0 20px;}

header.site-header{
  border-bottom:1px solid var(--hairline);
  background:var(--surface);
  position:sticky;top:0;z-index:10;
}
header.site-header .bar{
  max-width:1000px;margin:0 auto;padding:16px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.brand{
  display:flex;align-items:center;gap:10px;
  font-weight:800;font-size:16px;color:var(--ink);text-decoration:none;
}
.brand .mark{
  width:28px;height:28px;border-radius:8px;background:var(--cobalt);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-family:"IBM Plex Mono",monospace;font-weight:700;font-size:13px;
}
nav.mainnav{display:flex;gap:22px;font-size:13.5px;}
nav.mainnav a{color:var(--ink-muted);text-decoration:none;font-weight:600;}
nav.mainnav a:hover{color:var(--cobalt);}

.disclosure{
  display:flex;gap:10px;align-items:flex-start;
  background:var(--bg-alt);border:1px solid var(--hairline);border-radius:12px;
  padding:14px 16px;font-size:12.5px;line-height:1.7;color:var(--ink-muted);
  margin:0 0 28px;
}
.disclosure .dot{
  flex:0 0 auto;width:16px;height:16px;border-radius:50%;
  border:1.5px solid var(--ink-muted);display:flex;align-items:center;justify-content:center;
  font-size:10px;font-weight:800;margin-top:2px;
}

.hero{padding:48px 0 8px;}
.eyebrow{
  font-family:"IBM Plex Mono",monospace;font-size:11px;font-weight:700;
  letter-spacing:.14em;text-transform:uppercase;color:var(--cobalt);margin:0 0 12px;
}
h1{font-size:2rem;line-height:1.3;font-weight:800;margin:0 0 14px;letter-spacing:-.01em;}
.lede{color:var(--ink-muted);font-size:15.5px;max-width:62ch;margin:0 0 8px;}
.artmeta{
  font-family:"IBM Plex Mono",monospace;font-size:12px;color:var(--ink-muted);
  margin:0 0 4px;display:flex;flex-wrap:wrap;gap:14px;align-items:center;
}
.artmeta time{white-space:nowrap;}
.artmeta .sep{color:var(--hairline);}

.catgrid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));
  gap:12px;margin:32px 0 12px;
}
.catgrid a.card{
  display:flex;flex-direction:column;gap:6px;
  background:var(--surface);border:1px solid var(--hairline);border-radius:12px;
  padding:16px 18px;text-decoration:none;color:var(--ink);
  transition:border-color .15s ease;
}
.catgrid a.card:hover{border-color:var(--cobalt);}
.catgrid .cat{font-family:"IBM Plex Mono",monospace;font-size:10.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--cobalt);}
.catgrid .t{font-size:15px;font-weight:700;}
.catgrid .d{font-size:13px;color:var(--ink-muted);}

.postlist{list-style:none;margin:8px 0 32px;padding:0;}
.postlist .post{
  padding:18px 0;border-bottom:1px solid var(--hairline);
}
.postlist .post:first-child{border-top:1px solid var(--hairline);}
.post-meta{
  display:flex;align-items:center;gap:12px;margin:0 0 6px;
  font-family:"IBM Plex Mono",monospace;font-size:11.5px;color:var(--ink-muted);
}
.post-cat{
  font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--cobalt);
  background:var(--cobalt-tint);padding:2px 8px;border-radius:999px;font-size:10.5px;
}
.post-title{
  display:block;font-size:16px;font-weight:700;color:var(--ink);text-decoration:none;line-height:1.5;
}
.post-title:hover{color:var(--cobalt);}
.post-desc{margin:6px 0 0;font-size:13.5px;color:var(--ink-muted);line-height:1.7;}

article.prose{font-size:15.5px;}
article.prose h2{font-size:1.15rem;font-weight:800;margin:32px 0 12px;}
article.prose h3{font-size:1rem;font-weight:700;margin:22px 0 8px;}
article.prose p{margin:0 0 16px;}
article.prose ul,article.prose ol{margin:0 0 16px;padding-left:1.3em;}
article.prose li{margin:0 0 8px;}

table.cmp{
  width:100%;border-collapse:collapse;margin:8px 0 22px;font-size:13.5px;
  border:1px solid var(--hairline);border-radius:10px;overflow:hidden;
}
table.cmp caption{
  text-align:left;font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:var(--ink-muted);padding:10px 12px;background:var(--bg-alt);caption-side:top;
}
table.cmp td{padding:10px 12px;border-top:1px solid var(--hairline);}
table.cmp td:first-child{color:var(--ink-muted);width:38%;}
table.cmp td.val{font-family:"IBM Plex Mono",monospace;font-weight:700;}
table.cmp td.note{color:var(--ink-muted);font-size:12px;}

.checklist{
  background:var(--bg-alt);border:1px solid var(--hairline);border-radius:12px;
  padding:16px 18px;margin:8px 0 22px;
}
.checklist p.ct{font-size:12px;font-weight:800;letter-spacing:.05em;margin:0 0 10px;}
.checklist ul{margin:0;padding:0;list-style:none;}
.checklist li{display:flex;gap:8px;align-items:flex-start;font-size:13.5px;margin:0 0 8px;color:var(--ink-muted);}
.checklist li::before{content:"";flex:0 0 auto;width:14px;height:14px;margin-top:2px;border-radius:4px;border:1.5px solid var(--sage);}

.cta{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--cobalt-tint);border:1px dashed var(--cobalt);color:var(--cobalt);
  border-radius:10px;padding:10px 16px;font-size:13px;font-weight:700;
  margin:6px 8px 6px 0;text-decoration:none;
}
.cta .tag{
  font-family:"IBM Plex Mono",monospace;font-size:10px;font-weight:700;
  background:var(--cobalt);color:#fff;padding:2px 6px;border-radius:4px;
}

.readmore{display:inline-flex;align-items:center;gap:4px;font-size:13px;font-weight:700;color:var(--cobalt);text-decoration:none;margin-top:4px;}

footer.site-footer{
  margin-top:60px;border-top:1px solid var(--hairline);padding:28px 0 40px;
  color:var(--ink-muted);font-size:12.5px;
}

.midcta{
  background:var(--surface);border:1px solid var(--hairline);
  border-left:3px solid var(--cobalt);border-radius:10px;
  padding:16px 18px;margin:26px 0;
}
.midcta p.mt{font-size:11.5px;font-weight:800;letter-spacing:.05em;color:var(--cobalt);margin:0 0 7px;}
.midcta p.md{font-size:13.5px;color:var(--ink-muted);margin:0 0 12px;line-height:1.75;}
.midcta .cta{margin:0 8px 0 0;}