:root{
  --bg:#f7f7f5;
  --surface:#ffffff;
  --text:#1f1f1f;
  --muted:#626262;
  --line:#ddddda;
  --accent:#214d77;
  --accent-soft:#eef4fa;
  --maxw:1050px;
  --radius:14px;
  --shadow:0 10px 28px rgba(0,0,0,.06);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:Georgia,"Times New Roman",serif;line-height:1.65}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 1.25rem}
.site-header{background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.site-header .wrap{display:flex;justify-content:space-between;align-items:center;padding:1rem 1.25rem}
.brand{font-size:1.05rem;font-weight:700;color:var(--text)}
.nav{display:flex;gap:1rem;flex-wrap:wrap}
.nav a{font-size:.98rem;color:var(--muted)}
.hero{padding:3.5rem 0 2rem}
.hero-card,.notice,.card,.paper-main section,.citation-box,.footer-box{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.hero-card{padding:2rem}
h1{font-size:2.35rem;line-height:1.15;margin:0 0 .9rem}
h2{font-size:1.45rem;line-height:1.25;margin:0 0 .8rem}
h3{font-size:1.1rem;line-height:1.35;margin:0 0 .45rem}
p{margin:.75rem 0}
.muted{color:var(--muted)}
.notice{padding:1rem 1.1rem;margin:1rem 0 0;background:var(--accent-soft);border-left:4px solid var(--accent)}
.grid{display:grid;gap:1rem}
.grid.cards{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.card{padding:1.1rem 1.1rem 1rem}
.card .meta, .paper-meta{font-size:.97rem;color:var(--muted)}
.buttons{display:flex;gap:.75rem;flex-wrap:wrap;margin-top:1rem}
.button{display:inline-block;padding:.72rem 1rem;border-radius:10px;border:1px solid var(--accent);background:var(--accent);color:#fff;font-size:.98rem}
.button.secondary{background:#fff;color:var(--accent)}
.section{padding:0 0 1.5rem}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:1rem;margin-bottom:.8rem}
.paper-main{padding:2rem 0 3rem}
.paper-main .page-title{font-size:2rem;line-height:1.18;margin:0 0 .7rem}
.paper-main .lead{font-size:1.04rem}
.paper-main section{padding:1.2rem 1.2rem 1rem;margin-bottom:1rem}
.citation-box{padding:1rem;overflow-wrap:anywhere}
.tagline{font-size:1.04rem}
.list-clean{margin:0;padding-left:1.1rem}
.two-col{display:grid;grid-template-columns:2fr 1fr;gap:1rem}
.kicker{display:inline-block;padding:.25rem .55rem;border:1px solid var(--line);border-radius:999px;background:#fafafa;color:var(--muted);font-size:.86rem;margin-bottom:.6rem}
.footer{padding:1.5rem 0 2.5rem}
.footer-box{padding:1rem 1.1rem;color:var(--muted)}
.sequence-list{display:grid;gap:1rem}
.summary p:first-child{margin-top:0}
.summary p:last-child{margin-bottom:0}
small.code{font-family:ui-monospace, SFMono-Regular, Menlo, Consolas, monospace}
@media (max-width: 800px){
  .two-col{grid-template-columns:1fr}
  h1{font-size:1.95rem}
  .paper-main .page-title{font-size:1.65rem}
}