:root {
  --river: #0f3347;
  --paper: #f5f8f8;
  --text: #1c2a31;
  --muted: #586a72;
  --rule: #d3dcdd;
  --glow: #4048c9;
  --card: #ffffff;
  --serif: "Spectral", Georgia, serif;
  --sans: "Public Sans", system-ui, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --river: #0a1d28; --paper: #0e1c24; --text: #e2eaec; --muted: #9db0b7;
    --rule: #24404d; --glow: #9aa2ff; --card: #13262f; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --river: #0a1d28; --paper: #0e1c24; --text: #e2eaec; --muted: #9db0b7;
  --rule: #24404d; --glow: #9aa2ff; --card: #13262f; color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 64px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--paper); color: var(--text); font: 16px/1.55 var(--sans); }
a { color: var(--glow); text-underline-offset: 2px; }
:focus-visible { outline: 2px solid var(--glow); outline-offset: 2px; }
.vh { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* Hero: the river-blue block */
.hero {
  background: var(--river); color: #eef4f5;
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(220px, 380px); gap: 48px;
  padding: 72px max(24px, calc((100vw - 1120px) / 2)) 56px;
}
.hero h1 { font: 500 clamp(44px, 7vw, 84px)/1 var(--serif); margin: 0 0 20px; letter-spacing: -0.01em; }
.hero .roles { font: 400 18px/1.5 var(--serif); font-style: italic; color: #c5d6dc; margin: 0 0 24px; }
.hero p { max-width: 62ch; margin: 0 0 14px; color: #dbe6e9; }
.hero .contact a { color: #fff; }
.hero-photo { margin: 0; align-self: end; }
.hero-photo img { width: 100%; height: auto; display: block; border-radius: 2px; }

nav.sections {
  position: sticky; top: 0; z-index: 5; background: var(--paper); border-bottom: 1px solid var(--rule);
  display: flex; gap: 28px; overflow-x: auto; padding: 14px max(24px, calc((100vw - 1120px) / 2));
}
nav.sections { scrollbar-width: none; }
nav.sections::-webkit-scrollbar { display: none; }
nav.sections a { color: var(--text); text-decoration: none; font-weight: 500; white-space: nowrap; }
nav.sections a:hover { color: var(--glow); }

/* The shelf: first pages of recent papers */
.shelf-band { background: var(--river); padding: 0 0 36px; border-top: 1px solid rgba(255,255,255,.12); }
.shelf { display: flex; gap: 14px; overflow-x: auto; padding: 28px max(24px, calc((100vw - 1120px) / 2)) 8px; scrollbar-width: thin; }
.shelf button { flex: 0 0 auto; width: 132px; padding: 0; border: 0; background: none; cursor: pointer; text-align: left; color: #cfdde2; font: 12px/1.35 var(--sans); }
.shelf img { width: 132px; height: 176px; object-fit: cover; object-position: top; display: block; background: #fff; border-radius: 1px; margin-bottom: 8px; transition: transform .15s; }
.shelf button:hover img, .shelf button:focus-visible img { transform: translateY(-4px); }
.shelf .t { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

main { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
section { padding: 64px 0 8px; }
h2 { font: 500 40px/1.1 var(--serif); margin: 0 0 28px; }
h3.sub { font: 600 16px/1.3 var(--sans); color: var(--text); margin: 44px 0 14px; }
h3.sub:first-of-type { margin-top: 0; }

/* Programs */
.programs { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 0 48px; }
.program { border-top: 1px solid var(--rule); padding: 20px 0 28px; }
.program h4 { font: 500 23px/1.25 var(--serif); margin: 0 0 6px; }
.program .who { color: var(--muted); font-size: 14px; margin: 0 0 12px; }
.program p.body { margin: 0 0 14px; max-width: 64ch; }
.program details summary { cursor: pointer; font-weight: 500; color: var(--glow); }
.program ul { list-style: none; padding: 0; margin: 10px 0 0; }
.program li { margin: 0 0 8px; font-size: 14.5px; line-height: 1.4; }
.linkbtn { background: none; border: 0; padding: 0; font: inherit; color: var(--text); text-align: left; cursor: pointer; text-decoration: underline; text-decoration-color: var(--rule); text-underline-offset: 3px; }
.linkbtn:hover { color: var(--glow); text-decoration-color: currentColor; }
.yr { color: var(--muted); font-variant-numeric: tabular-nums; }

/* Papers */
.controls { display: flex; flex-wrap: wrap; gap: 12px 20px; align-items: center; margin-bottom: 8px; }
.search input { font: inherit; padding: 10px 14px; width: min(420px, 100%); border: 1px solid var(--rule); border-radius: 4px; background: var(--card); color: var(--text); }
.search { flex: 1 1 280px; }
.kinds { display: flex; flex-wrap: wrap; gap: 6px; }
.kinds button { font: 500 14px var(--sans); padding: 8px 12px; border-radius: 4px; border: 1px solid var(--rule); background: transparent; color: var(--text); cursor: pointer; }
.kinds button[aria-pressed="true"] { background: var(--text); color: var(--paper); border-color: var(--text); }
.count { color: var(--muted); font-size: 14px; margin: 8px 0 24px; }
.year { display: grid; grid-template-columns: 72px minmax(0, 1fr); gap: 0 16px; border-top: 1px solid var(--rule); padding-top: 14px; margin-bottom: 18px; }
.year > h3 { font: 500 24px/1 var(--serif); margin: 4px 0 0; color: var(--muted); font-variant-numeric: tabular-nums; }
.thumb { width: 56px; height: 74px; border: 1px solid var(--rule); padding: 0; background: #fff; cursor: pointer; overflow: hidden; display: block; }
.thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top; display: block; transition: opacity .15s; }
.thumb:hover img { opacity: .85; }
.nothumb { width: 56px; height: 74px; border: 1px dashed var(--rule); }
.work { display: grid; grid-template-columns: 56px minmax(0, 1fr); gap: 16px; padding: 10px 0 14px; }
.work h4 { font: 500 18px/1.35 var(--serif); margin: 0 0 4px; }
.work .au { font-size: 14px; color: var(--muted); margin: 0 0 2px; }
.work .au b { color: var(--text); font-weight: 600; }
.work .ve { font-size: 14px; margin: 0 0 6px; font-style: italic; font-family: var(--serif); }
.work .acts { font-size: 14px; display: flex; gap: 4px 16px; flex-wrap: wrap; }
.work .acts a { overflow-wrap: anywhere; }
.work .acts .read { font-weight: 600; }

/* Patents */
.patents { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 28px 40px; }
.patent { border-top: 1px solid var(--rule); padding-top: 16px; }
.patent { display: grid; grid-template-columns: 96px minmax(0, 1fr); gap: 16px; }
.patent .thumb, .patent .nothumb { width: 96px; height: 128px; }
.patent .num { font: 600 15px var(--sans); margin: 0 0 4px; font-variant-numeric: tabular-nums; }
.patent h4 { font: 500 18px/1.3 var(--serif); margin: 0 0 6px; }
.patent p { margin: 0 0 4px; font-size: 14px; color: var(--muted); }

/* Books */
.covers { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 28px; }
.cover button { padding: 0; border: 1px solid var(--rule); background: #fff; cursor: pointer; width: 100%; aspect-ratio: 3 / 4; overflow: hidden; display: block; }
.cover img { width: 100%; height: 100%; object-fit: cover; object-position: top; display: block; }
.cover h4 { font: 500 16px/1.3 var(--serif); margin: 10px 0 4px; }
.cover p { margin: 0; font-size: 13.5px; color: var(--muted); }

/* CV */
.cv-head { display: grid; grid-template-columns: 120px 1fr; gap: 24px; margin-bottom: 32px; }
.cv-thumb { padding: 0; border: 1px solid var(--rule); background: #fff; cursor: pointer; width: 120px; aspect-ratio: 3 / 4; overflow: hidden; }
.cv-thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top; display: block; }
.cv-head p { margin: 0 0 10px; max-width: 70ch; }
.cv-head .acts { display: flex; gap: 18px; font-size: 15px; }
.cv-head .acts .read { font-weight: 600; }
#cv-date { color: var(--muted); font-size: 14px; }
.cv-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px 56px; }
.cv-grid > .wide { grid-column: 1 / -1; }
.cv-grid > .wide dl { max-width: 880px; }
.cv-grid h3.sub { margin-top: 32px; }
.cv-grid dl { margin: 0; display: grid; grid-template-columns: 8.5em minmax(0, 1fr); gap: 10px 20px; font-size: 15px; line-height: 1.45; }
.cv-grid dt { color: var(--muted); font-variant-numeric: tabular-nums; }
.cv-grid dd { margin: 0; }
@media (max-width: 760px) {
  .cv-grid { grid-template-columns: 1fr; }
  .cv-grid dl { grid-template-columns: 1fr; gap: 0; }
  .cv-grid dd { margin-bottom: 10px; }
  .cv-head { grid-template-columns: 84px 1fr; gap: 16px; }
  .cv-thumb { width: 84px; }
}

footer { max-width: 1120px; margin: 64px auto 0; padding: 24px 24px 48px; border-top: 1px solid var(--rule); color: var(--muted); font-size: 14px; }

/* Reader */
dialog#reader { width: min(1100px, 100vw); height: 100vh; max-width: 100vw; max-height: 100vh; margin: 0 auto; padding: 0; border: 0; background: var(--paper); color: var(--text); display: none; flex-direction: column; }
dialog#reader[open] { display: flex; }
dialog#reader::backdrop { background: rgba(6, 20, 28, .72); }
.r-bar { display: flex; gap: 16px; align-items: center; justify-content: space-between; padding: 12px 16px; border-bottom: 1px solid var(--rule); flex-wrap: wrap; }
.r-meta { min-width: 0; flex: 1 1 320px; }
#r-title { font: 500 17px/1.3 var(--serif); margin: 0; }
#r-sub { font-size: 13px; color: var(--muted); margin: 2px 0 0; }
.r-actions { display: flex; gap: 14px; align-items: center; font-size: 14px; flex-wrap: wrap; }
.r-actions button { font: 600 14px var(--sans); padding: 8px 14px; border-radius: 4px; border: 1px solid var(--text); background: var(--text); color: var(--paper); cursor: pointer; }
#r-pages { flex: 1; overflow: auto; background: #4a5257; padding: 16px 0 40px; }
#r-pages canvas { display: block; margin: 0 auto 12px; background: #fff; box-shadow: 0 1px 3px rgba(0,0,0,.35); max-width: calc(100% - 16px); height: auto; }
#r-status { color: #e8eef0; text-align: center; margin: 40px 16px; }

@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; padding: 40px 16px 32px; gap: 28px; }
  .hero-photo { max-width: 260px; }
  nav.sections, .shelf { padding-left: 16px; padding-right: 16px; }
  nav.sections { gap: 20px; }
  main { padding: 0 16px; }
  h2 { font-size: 32px; }
  .programs { grid-template-columns: 1fr; }
  .year { grid-template-columns: minmax(0, 1fr); }
  .patent { grid-template-columns: 72px minmax(0, 1fr); }
  .patent .thumb, .patent .nothumb { width: 72px; height: 96px; }
  .hero .roles { font-size: 16px; }
  .year > h3 { margin-bottom: 4px; }
  .patents { grid-template-columns: 1fr; }
  .covers { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  footer { padding: 24px 16px 40px; }
}