:root {
  --accent: #2d5f8a;
  --bg: #fbfaf7;
  --ink: #201f1c;
  --muted: #6b6862;
  --faint: #a19d94;
  --line: #e6e3dc;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Instrument Sans', system-ui, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--ink); color: var(--bg); }
a { color: inherit; }
.shell {
  width: min(920px, calc(100% - 48px));
  margin: 0 auto;
  padding: 44px 0 96px;
}
.site-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}
.brand { display:flex; align-items:baseline; gap:10px; text-decoration:none; }
.brand-name { font-size:18px; font-weight:600; letter-spacing:-.015em; }
.brand-sep { color:var(--faint); }
.brand-section {
  font-family:'Space Mono', monospace;
  font-size:11px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--muted);
}
.head-actions { display:flex; align-items:center; gap:14px; }
.home-link,.lang-switch a,.lang-switch span {
  font-family:'Space Mono', monospace;
  font-size:11px;
  letter-spacing:.03em;
  text-decoration:none;
}
.home-link { color:var(--muted); }
.home-link:hover,.lang-switch a:hover { color:var(--accent); }
.lang-switch { display:flex; align-items:center; gap:7px; }
.lang-switch span[aria-current='page'] { color:var(--ink); font-weight:700; }
.lang-switch .sep { color:var(--line); }
.hero { padding:64px 0 30px; }
.kicker {
  font-family:'Space Mono', monospace;
  font-size:10.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--faint);
  margin-bottom:10px;
}
h1 {
  font-size:clamp(34px, 6vw, 54px);
  line-height:1.08;
  letter-spacing:-.035em;
  margin:0;
  font-weight:600;
}
.deck {
  max-width:58ch;
  margin:18px 0 0;
  font-size:17px;
  line-height:1.65;
  color:#3f3d38;
}
.editorial-note {
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(220px,.65fr);
  gap:32px;
  padding:22px 0 26px;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  margin-bottom:34px;
}
.editorial-note p {
  margin:0;
  font-size:13.5px;
  line-height:1.7;
  color:var(--muted);
}
.editorial-note details { margin-top:9px; }
.editorial-note summary {
  cursor:pointer;
  list-style:none;
  width:fit-content;
  font-family:'Space Mono', monospace;
  font-size:10px;
  color:var(--accent);
  letter-spacing:.02em;
}
.editorial-note summary::-webkit-details-marker { display:none; }
.editorial-note summary::after { content:' +'; }
.editorial-note details[open] summary::after { content:' −'; }
.editorial-more { margin-top:12px; display:grid; gap:10px; max-width:62ch; }
.collab-note { padding-left:18px; border-left:2px solid var(--accent); }
.collab-note a {
  display:inline-block;
  margin-top:10px;
  font-family:'Space Mono', monospace;
  font-size:10.5px;
  color:var(--accent);
  text-decoration:none;
}
.note-tools {
  display:grid;
  grid-template-columns:minmax(0,1fr) auto auto;
  gap:14px;
  align-items:end;
  margin:0 0 8px;
}
.note-search,.note-year {
  border:0;
  border-bottom:1px solid var(--line);
  border-radius:0;
  background:transparent;
  color:var(--ink);
  font:inherit;
  font-size:12.5px;
  padding:8px 0;
  outline:none;
}
.note-search:focus,.note-year:focus { border-color:var(--ink); }
.note-search::placeholder { color:var(--faint); }
.note-year { min-width:100px; }
.note-count {
  font-family:'Space Mono', monospace;
  font-size:10px;
  color:var(--faint);
  padding-bottom:8px;
  white-space:nowrap;
}
.note-empty { margin:18px 0 0; color:var(--muted); font-size:14px; }
.note-list { margin-top:0; border-top:1px solid var(--ink); }
.note-row {
  display:grid;
  grid-template-columns:110px 1fr;
  gap:24px;
  padding:22px 0 20px;
  border-bottom:1px solid var(--line);
  text-decoration:none;
}
.note-row[hidden] { display:none; }
.note-row:hover .note-title { color:var(--accent); }
.note-date {
  font-family:'Space Mono', monospace;
  font-size:10.5px;
  color:var(--faint);
  padding-top:4px;
}
.note-title { font-size:19px; font-weight:600; letter-spacing:-.015em; transition:color .18s; }
.note-desc { margin-top:4px; color:var(--muted); font-size:13.5px; }
.note-tags { margin-top:8px; display:flex; gap:9px; flex-wrap:wrap; }
.tag {
  font-family:'Space Mono', monospace;
  font-size:9.5px;
  color:var(--faint);
}
.article { max-width:760px; margin:0 auto; padding-top:72px; }
.article-head { padding-bottom:30px; border-bottom:1px solid var(--line); margin-bottom:42px; }
.article h1 { font-size:clamp(36px, 6vw, 58px); line-height:1.08; }
.meta {
  margin-top:18px;
  font-family:'Space Mono', monospace;
  font-size:10.5px;
  color:var(--faint);
}
.paper-ref {
  display:grid;
  grid-template-columns:70px 1fr;
  gap:12px;
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid var(--line);
}
.paper-ref-label {
  font-family:'Space Mono', monospace;
  font-size:9.5px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--faint);
  padding-top:2px;
}
.paper-ref-title {
  font-size:13.5px;
  line-height:1.45;
  font-weight:500;
  color:var(--ink);
  text-decoration:none;
}
.paper-ref-title:hover { color:var(--accent); }
.paper-ref-cite {
  display:block;
  margin-top:3px;
  font-family:'Space Mono', monospace;
  font-size:10px;
  color:var(--muted);
}
.prose { font-size:17px; line-height:1.78; }
.prose p { margin:0 0 1.4em; }
.prose a { color:var(--accent); text-underline-offset:3px; }
.prose h2 { font-size:24px; letter-spacing:-.02em; margin:2.3em 0 .75em; }
.prose blockquote {
  margin:1.7em 0;
  padding-left:18px;
  border-left:2px solid var(--accent);
  color:#3f3d38;
}
footer {
  margin-top:72px;
  padding-top:18px;
  border-top:1px solid var(--line);
  font-family:'Space Mono', monospace;
  font-size:10.5px;
  color:var(--faint);
}
@media (max-width:720px) {
  .editorial-note { grid-template-columns:1fr; gap:18px; }
  .collab-note { padding-left:14px; }
}
@media (max-width:640px) {
  .shell { width:min(100% - 36px, 920px); padding-top:30px; }
  .site-head { align-items:flex-start; }
  .head-actions { flex-direction:column; align-items:flex-end; gap:6px; }
  .hero { padding-top:46px; }
  .deck { font-size:16px; }
  .note-tools { grid-template-columns:1fr auto; }
  .note-count { grid-column:1 / -1; padding-bottom:0; }
  .note-row { grid-template-columns:1fr; gap:4px; }
  .article { padding-top:50px; }
  .paper-ref { grid-template-columns:1fr; gap:4px; }
  .prose { font-size:16px; }
}