:root {
  --paper: #f4f1e9;
  --paper-2: #ebe6dc;
  --ink: #101310;
  --muted: #66685f;
  --rule: #d6d0c5;
  --accent: #244e46;
  --accent-soft: #dce6e2;
  --max: 1180px;
  --measure: 720px;
  --serif: Georgia, 'Times New Roman', Times, serif;
  --sans: ui-sans-serif, -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.58;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration-color: rgba(16,19,16,.35); text-underline-offset: .18em; }
a:hover { text-decoration-color: var(--accent); }
img { max-width: 100%; }
::selection { background: var(--accent); color: #fff; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 999;
  background: var(--ink); color: #fff; padding: .7rem 1rem;
}
.skip-link:focus { left: 1rem; top: 1rem; }

.shell { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--paper) 91%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
}
.header-inner { min-height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { text-decoration: none; font-family: var(--mono); font-size: .78rem; font-weight: 600; letter-spacing: .075em; }
.nav { display: flex; gap: 1.3rem; align-items: center; font-size: .88rem; }
.nav a { text-decoration: none; color: var(--muted); }
.nav a:hover, .nav a[aria-current='page'] { color: var(--ink); }
.nav .contact-link { border-bottom: 1px solid var(--ink); color: var(--ink); padding-bottom: 2px; }

.kicker, .eyebrow, .meta, .tag, .label {
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: .08em;
  font-size: .72rem;
}
.kicker, .eyebrow, .meta { color: var(--muted); }
.hero { padding: 9.5rem 0 7.5rem; border-bottom: 1px solid var(--rule); }
.hero-grid { display: grid; grid-template-columns: 8fr 4fr; gap: 3rem; align-items: end; }
.hero h1 {
  max-width: 900px; margin: 1rem 0 1.6rem;
  font-family: var(--serif); font-weight: 500;
  font-size: clamp(3.6rem, 7.5vw, 7.4rem); line-height: .91; letter-spacing: -.055em;
}
.hero .dek {
  max-width: 760px; margin: 0;
  font-family: var(--serif); font-size: clamp(1.35rem, 2.4vw, 2rem); line-height: 1.25;
}
.hero-aside { border-left: 1px solid var(--rule); padding-left: 1.5rem; }
.hero-aside p { margin: 0 0 1rem; color: var(--muted); font-size: .92rem; }
.hero-aside strong { color: var(--ink); font-weight: 600; }

.section { padding: 6.5rem 0; border-bottom: 1px solid var(--rule); }
.section-head { display: grid; grid-template-columns: 3fr 9fr; gap: 2rem; margin-bottom: 3rem; }
.section-head h2 { margin: 0; font-family: var(--serif); font-weight: 500; font-size: clamp(2.25rem, 4vw, 4rem); line-height: 1; letter-spacing: -.035em; }
.section-head p { max-width: 640px; margin: .4rem 0 0; color: var(--muted); font-size: 1.05rem; }

.focus-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--rule); }
.focus-item { padding: 1.2rem 1.2rem 1.8rem 0; border-right: 1px solid var(--rule); }
.focus-item + .focus-item { padding-left: 1.2rem; }
.focus-item:last-child { border-right: 0; }
.focus-item .num { color: var(--accent); font-family: var(--mono); font-size: .72rem; }
.focus-item h3 { margin: 2rem 0 .65rem; font-family: var(--serif); font-size: 1.4rem; font-weight: 500; }
.focus-item p { margin: 0; color: var(--muted); font-size: .92rem; }

.research-list { border-top: 1px solid var(--ink); }
.research-card {
  display: grid; grid-template-columns: 2.2fr 6.3fr 2fr 1.5fr; gap: 1.4rem;
  padding: 1.55rem 0; border-bottom: 1px solid var(--rule); text-decoration: none; align-items: start;
}
.research-card:hover .research-title { color: var(--accent); }
.research-card .research-title { font-family: var(--serif); font-size: 1.55rem; line-height: 1.18; transition: color .15s ease; }
.research-card .research-summary { color: var(--muted); font-size: .93rem; }
.research-card .arrow { text-align: right; font-size: 1.2rem; }
.tag { display: inline-block; margin: 0 .45rem .45rem 0; padding: .23rem .45rem; border: 1px solid var(--rule); color: var(--muted); }
.status { color: var(--accent); }

.note-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.note-card { min-height: 220px; border: 1px solid var(--rule); padding: 1.5rem; text-decoration: none; display: flex; flex-direction: column; justify-content: space-between; }
.note-card:hover { border-color: var(--ink); }
.note-card h3 { font-family: var(--serif); font-size: 1.8rem; font-weight: 500; line-height: 1.1; margin: 1.1rem 0; }
.note-card p { color: var(--muted); margin: 0; }

.about-strip { display: grid; grid-template-columns: 5fr 7fr; gap: 5rem; }
.about-strip .statement { font-family: var(--serif); font-size: clamp(1.7rem,3vw,2.7rem); line-height: 1.15; margin: 0; }
.about-strip .about-copy { color: var(--muted); }
.about-strip .about-copy strong { color: var(--ink); }
.text-link { display: inline-flex; gap: .5rem; align-items: baseline; margin-top: 1rem; font-weight: 600; }

.page-hero { padding: 7rem 0 4rem; border-bottom: 1px solid var(--rule); }
.page-hero h1 { max-width: 900px; margin: .8rem 0 1rem; font-family: var(--serif); font-size: clamp(3.2rem, 6vw, 6.2rem); font-weight: 500; line-height: .95; letter-spacing: -.045em; }
.page-hero .intro { max-width: 760px; margin: 0; color: var(--muted); font-family: var(--serif); font-size: 1.4rem; }

.article-wrap { display: grid; grid-template-columns: 2.5fr 7fr 2.5fr; gap: 2rem; padding: 5rem 0 7rem; }
.article-meta { font-size: .85rem; color: var(--muted); }
.article-meta dl { margin: 0; }
.article-meta dt { font-family: var(--mono); text-transform: uppercase; letter-spacing: .07em; font-size: .67rem; margin-top: 1.2rem; }
.article-meta dd { margin: .3rem 0 0; }
.article-body { max-width: var(--measure); }
.article-body .lead { font-family: var(--serif); font-size: 1.55rem; line-height: 1.35; color: var(--ink); }
.article-body h2 { font-family: var(--serif); font-size: 2.05rem; line-height: 1.1; font-weight: 500; margin: 3.5rem 0 1rem; letter-spacing: -.025em; }
.article-body h3 { font-size: 1rem; text-transform: uppercase; letter-spacing: .05em; margin: 2.5rem 0 .75rem; }
.article-body p, .article-body li { color: #33372f; }
.article-body blockquote { margin: 2rem 0; padding: 0 0 0 1.3rem; border-left: 2px solid var(--accent); font-family: var(--serif); font-size: 1.35rem; }
.callout { margin: 2.2rem 0; padding: 1.3rem 1.4rem; background: var(--accent-soft); }
.callout strong { display: block; margin-bottom: .35rem; }
.source-list { padding-left: 1.15rem; font-size: .9rem; }
.source-list li { margin-bottom: .6rem; }
.toc { position: sticky; top: 100px; align-self: start; font-size: .82rem; }
.toc a { display: block; color: var(--muted); text-decoration: none; margin: .55rem 0; }
.toc a:hover { color: var(--ink); }

.about-grid { display: grid; grid-template-columns: 4fr 8fr; gap: 4rem; padding: 5rem 0 7rem; }
.about-grid h2 { font-family: var(--serif); font-size: 2rem; font-weight: 500; margin: 0 0 1.2rem; }
.about-grid .bio { font-family: var(--serif); font-size: 1.5rem; line-height: 1.38; margin-top: 0; }
.fact-list { border-top: 1px solid var(--rule); margin-top: 2.2rem; }
.fact-row { display: grid; grid-template-columns: 1.7fr 4fr; gap: 1rem; padding: 1rem 0; border-bottom: 1px solid var(--rule); }
.fact-row .label { color: var(--muted); }

.site-footer { padding: 3rem 0 4rem; }
.footer-grid { display: grid; grid-template-columns: 6fr 3fr 3fr; gap: 2rem; }
.site-footer p { margin: 0 0 .65rem; color: var(--muted); font-size: .82rem; }
.site-footer .footer-name { font-family: var(--mono); color: var(--ink); font-size: .78rem; font-weight: 600; letter-spacing: .075em; }
.footer-links a { display: block; margin-bottom: .4rem; }

@media (max-width: 900px) {
  .hero { padding: 7rem 0 5rem; }
  .hero-grid, .section-head, .about-strip, .about-grid, .article-wrap, .footer-grid { grid-template-columns: 1fr; }
  .hero-aside { border-left: 0; border-top: 1px solid var(--rule); padding: 1.3rem 0 0; }
  .focus-grid { grid-template-columns: 1fr 1fr; }
  .focus-item:nth-child(2) { border-right: 0; }
  .focus-item:nth-child(3), .focus-item:nth-child(4) { border-top: 1px solid var(--rule); }
  .research-card { grid-template-columns: 1fr; gap: .7rem; }
  .research-card .arrow { display: none; }
  .toc { display: none; }
  .article-meta { border-bottom: 1px solid var(--rule); padding-bottom: 1.5rem; }
  .about-strip { gap: 2rem; }
}

@media (max-width: 620px) {
  .shell { width: min(calc(100% - 28px), var(--max)); }
  .header-inner { min-height: 62px; }
  .brand { font-size: 1rem; }
  .nav { gap: .8rem; font-size: .8rem; }
  .nav .hide-mobile { display: none; }
  .hero h1 { font-size: clamp(3rem, 17vw, 5rem); }
  .hero .dek { font-size: 1.25rem; }
  .section { padding: 4.5rem 0; }
  .focus-grid, .note-grid { grid-template-columns: 1fr; }
  .focus-item, .focus-item + .focus-item { padding: 1rem 0 1.5rem; border-right: 0; border-top: 1px solid var(--rule); }
  .focus-grid { border-top: 0; }
  .page-hero { padding: 5.5rem 0 3rem; }
  .article-wrap { padding: 3rem 0 5rem; }
  .fact-row { grid-template-columns: 1fr; gap: .3rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}

@media print {
  .site-header, .site-footer, .toc { display: none; }
  body { background: white; }
  .shell { width: 100%; }
  .article-wrap { display: block; padding: 0; }
  .article-meta { margin-bottom: 2rem; }
  a { text-decoration: none; }
}