/* Layout: one calm reading column (about 68ch) under a slim header; the home hero pairs text with the portrait. */
:root {
  --bg: #f6f7f5;
  --surface: #ffffff;
  --ink: #18212b;
  --muted: #56616c;
  --line: #dde2e5;
  --accent: #23527c;
  --accent-soft: #e4ecf3;
  --font-display: "Newsreader", "Iowan Old Style", Georgia, serif;
  --font-body: "Public Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
  --measure: 68ch;
  --wide: 1080px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #11161c;
    --surface: #171e26;
    --ink: #e6e9ed;
    --muted: #9ba5b0;
    --line: #2a333d;
    --accent: #8fb9df;
    --accent-soft: #1d2a37;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #11161c;
  --surface: #171e26;
  --ink: #e6e9ed;
  --muted: #9ba5b0;
  --line: #2a333d;
  --accent: #8fb9df;
  --accent-soft: #1d2a37;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

.wrap {
  max-width: var(--wide);
  margin: 0 auto;
  padding-left: max(20px, env(safe-area-inset-left, 0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
}
.prose { max-width: var(--measure); }
.prose p { margin: 0 0 1em; }

h1, h2, h3 { font-family: var(--font-display); font-weight: 500; line-height: 1.15; text-wrap: balance; margin: 0; }
h1 { font-size: clamp(2.3rem, 5vw, 3.4rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.6rem, 3vw, 2.05rem); }
h3 { font-size: 1.3rem; }
.eyebrow {
  font-size: 0.78rem; font-weight: 600; letter-spacing: 0.09em; text-transform: uppercase;
  color: var(--muted); margin: 0 0 0.6rem;
}
.lede { font-size: 1.2rem; color: var(--ink); max-width: 58ch; }
.muted { color: var(--muted); }
.small { font-size: 0.9rem; }

/* Header */
.skip { position: absolute; left: -999px; top: 0; }
.skip:focus { left: 16px; top: 16px; background: var(--surface); padding: 8px 12px; z-index: 20; }
.site-header { border-bottom: 1px solid var(--line); background: var(--bg); }
.site-header .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 24px; padding-block: 18px; }
.brand { font-family: var(--font-display); font-size: 1.35rem; color: var(--ink); text-decoration: none; white-space: nowrap; }
.brand span { color: var(--muted); font-size: 1rem; margin-left: 6px; }
.nav { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 18px; }
.nav a { color: var(--muted); text-decoration: none; font-size: 0.95rem; padding: 4px 0; border-bottom: 2px solid transparent; }
.nav a:hover { color: var(--ink); }
.nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--accent); }
.theme-toggle {
  font: inherit; font-size: 0.85rem; color: var(--muted); background: transparent;
  border: 1px solid var(--line); border-radius: 999px; padding: 3px 12px; cursor: pointer;
}
.theme-toggle:hover { color: var(--ink); border-color: var(--muted); }

main { display: block; }
.section { padding-block: 56px; }
.section + .section { border-top: 1px solid var(--line); }
.section-head { display: flex; flex-direction: column; gap: 6px; margin-bottom: 28px; }
.page-head { padding-block: 56px 8px; }
.page-head .lede { margin-top: 16px; }

/* Hero */
.hero { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 48px; align-items: center; padding-block: 56px; }
.hero .name-line { color: var(--muted); margin: 14px 0 22px; font-size: 1.02rem; }
.hero .lede { margin: 0 0 28px; }
.portrait { border-radius: 4px; aspect-ratio: 4 / 5; object-fit: cover; width: 100%; max-width: 380px; justify-self: end; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-block; text-decoration: none; font-weight: 600; font-size: 0.95rem;
  padding: 10px 18px; border-radius: 3px; border: 1px solid var(--accent);
}
.btn-primary { background: var(--accent); color: var(--bg); }
.btn-primary:hover { opacity: 0.9; }
.btn-ghost { color: var(--accent); background: transparent; }

/* Strands */
.strands { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
.strand { border-top: 2px solid var(--accent); padding-top: 16px; display: flex; flex-direction: column; gap: 10px; }
.strand p { margin: 0; color: var(--muted); }
.strand .tag { font-size: 0.78rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); }

/* Now */
.now { display: grid; grid-template-columns: minmax(0, 220px) minmax(0, 1fr); gap: 32px; }
.now ul { margin: 0; padding-left: 1.1em; max-width: var(--measure); }
.now li { margin-bottom: 10px; }
.stamp { font-variant-numeric: tabular-nums; }

/* Lists of entries */
.entries { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; }
.entry { padding-block: 18px; border-bottom: 1px solid var(--line); display: flex; flex-direction: column; gap: 6px; max-width: 80ch; }
.entry:first-child { padding-top: 0; }
.cite { margin: 0; }
.takeaway { margin: 0; color: var(--muted); font-size: 0.97rem; }
.takeaway b { color: var(--ink); font-weight: 600; }
.entry-actions { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 0.88rem; align-items: center; }
.copy-btn {
  font: inherit; font-size: 0.88rem; color: var(--accent); background: none; border: 0; padding: 0; cursor: pointer; text-decoration: underline; text-underline-offset: 0.18em;
}
.status { display: inline-block; font-size: 0.75rem; font-weight: 600; letter-spacing: 0.04em; padding: 1px 8px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); }
.pub-group { margin-bottom: 44px; }
.pub-group h2 { margin-bottom: 18px; }
.pub-group h3 { margin: 26px 0 12px; font-size: 1.1rem; font-family: var(--font-body); font-weight: 600; color: var(--muted); }
.jump { display: flex; flex-wrap: wrap; gap: 6px 18px; margin-top: 18px; font-size: 0.93rem; }

/* Research map */
.map-wrap { overflow-x: auto; margin: 8px 0 12px; }
.map { width: 100%; min-width: 320px; max-width: 860px; height: auto; display: block; }
.map .edge { stroke: var(--line); stroke-width: 2; fill: none; }
.map .node { fill: var(--surface); stroke: var(--accent); stroke-width: 2; }
.map .node-label { fill: var(--ink); font-family: var(--font-display); font-size: 25px; }
.map .bridge { fill: var(--accent-soft); stroke: none; }
.map .bridge-label { fill: var(--ink); font-family: var(--font-body); font-size: 15px; }
.map .center-label { fill: var(--muted); font-family: var(--font-body); font-size: 15px; font-weight: 600; letter-spacing: 0.08em; }
.map .center-q { fill: var(--ink); font-family: var(--font-display); font-size: 22px; font-style: italic; }
.map a:hover .node, .map a:focus .node { fill: var(--accent-soft); }
.map a:hover .bridge, .map a:focus .bridge { fill: var(--line); }
.strand-detail { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 20px 40px; margin-top: 18px; }
.strand-detail h3 { font-family: var(--font-body); font-size: 0.8rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.strand-detail ul { margin: 0; padding-left: 1.1em; }
.strand-detail li { margin-bottom: 8px; }

/* Tables */
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 0.97rem; }
th, td { text-align: left; padding: 10px 14px 10px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
td.when { white-space: nowrap; font-variant-numeric: tabular-nums; color: var(--muted); }

blockquote { margin: 0; padding: 4px 0 4px 18px; border-left: 2px solid var(--accent); font-family: var(--font-display); font-size: 1.2rem; font-style: italic; }
blockquote + blockquote { margin-top: 16px; }

.blocks { display: grid; grid-template-columns: minmax(0, 1fr); gap: 0; }
.block { padding-block: 32px; border-top: 1px solid var(--line); display: grid; grid-template-columns: minmax(0, 260px) minmax(0, 1fr); gap: 16px 40px; }
.block:first-child { border-top: 0; padding-top: 0; }
.block ul { padding-left: 1.1em; margin: 0 0 1em; }
.contact-line { font-weight: 600; word-break: break-word; }

.cv-grid { display: grid; grid-template-columns: minmax(0, 220px) minmax(0, 1fr); gap: 16px 40px; }
.cv-grid h2 { font-size: 1.35rem; }
.cv-grid ul { list-style: none; padding: 0; margin: 0; }
.cv-grid li { padding-bottom: 12px; }
.cv-grid li span { display: block; color: var(--muted); font-size: 0.93rem; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding-block: 36px 48px; margin-top: 24px; font-size: 0.93rem; color: var(--muted); }
.site-footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 18px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 6px 18px; }
.footer-links a { color: var(--muted); }
.footer-links a:hover { color: var(--ink); }

@media (max-width: 820px) {
  .hero { grid-template-columns: minmax(0, 1fr); gap: 28px; padding-block: 36px; }
  .portrait { justify-self: start; max-width: 260px; order: -1; }
  .strands, .strand-detail { grid-template-columns: minmax(0, 1fr); }
  .now, .block, .cv-grid { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .section { padding-block: 40px; }
}
@media (prefers-reduced-motion: no-preference) {
  a, .btn, .copy-btn { transition: color .15s ease, opacity .15s ease, background-color .15s ease; }
}
@media print {
  .site-header nav, .theme-toggle, .copy-btn { display: none; }
}