:root {
  --paper: #fbfaf7;
  --ink: #202a31;
  --navy: #183344;
  --muted: #667078;
  --line: #d8d6cf;
  --accent: #176b78;
  --warm: #b65f32;
  --serif: Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

* { 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: 1.65;
}
img, svg { max-width: 100%; }
a { color: var(--accent); text-underline-offset: .18em; }
a:hover { color: var(--warm); }
.shell { width: min(1080px, calc(100% - 2.5rem)); margin-inline: auto; }
.skip-link { position: absolute; left: -9999px; top: .5rem; z-index: 20; padding: .5rem .75rem; background: var(--navy); color: #fff; }
.skip-link:focus { left: .5rem; }

.site-header { border-bottom: 1px solid var(--line); background: rgba(251,250,247,.97); }
.site-nav { min-height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.site-name { color: var(--navy); font-family: var(--serif); font-size: 1.32rem; font-weight: 700; text-decoration: none; }
.site-nav nav, .site-footer nav { display: flex; align-items: center; flex-wrap: wrap; gap: .35rem 1.25rem; }
.site-nav nav a { padding: .25rem 0; color: var(--muted); font-size: .86rem; font-weight: 600; text-decoration: none; }
.site-nav nav a:hover, .site-nav nav a[aria-current="page"] { color: var(--navy); }
.site-nav nav a[aria-current="page"] { border-bottom: 2px solid var(--accent); }

h1, h2, h3 { color: var(--navy); font-family: var(--serif); font-weight: 600; line-height: 1.2; }
h1 { margin: 0 0 1.1rem; font-size: clamp(2.45rem, 6vw, 4.15rem); letter-spacing: -.025em; }
h2 { margin: 0 0 1rem; font-size: clamp(1.6rem, 3vw, 2.15rem); }
h3 { margin: 0 0 .45rem; font-size: 1.2rem; }
p { margin: 0 0 1.15rem; }
.eyebrow { margin-bottom: .65rem; color: var(--accent); font-size: .74rem; font-weight: 700; letter-spacing: .09em; text-transform: uppercase; }
.lede { color: #3d484f; font-family: var(--serif); font-size: clamp(1.15rem, 2.2vw, 1.4rem); line-height: 1.52; }

.home-intro { display: grid; grid-template-columns: minmax(250px, 330px) minmax(0, 1fr); gap: clamp(2.5rem, 7vw, 6rem); align-items: center; padding: clamp(3.5rem, 7vw, 5.5rem) 0; border-bottom: 1px solid var(--line); }
.home-intro h1 { max-width: none; }
.home-intro .lede { max-width: 680px; }
.availability { margin: .25rem 0 1.45rem; color: var(--navy); font-size: .86rem; font-weight: 600; }
.intro-links { display: flex; flex-wrap: wrap; gap: .65rem 1.25rem; font-size: .88rem; font-weight: 600; }
.portrait { margin: 0; }
.portrait img { display: block; width: 100%; height: auto; filter: saturate(.82); }
.portrait figcaption { margin-top: .5rem; color: var(--muted); font-size: .71rem; }

.section { padding: clamp(3.8rem, 8vw, 6.2rem) 0; border-bottom: 1px solid var(--line); }
.section-heading { display: grid; grid-template-columns: 170px minmax(0, 1fr); gap: 2rem; margin-bottom: 2.35rem; }
.section-heading h2 { max-width: 25ch; }
.research-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2.3rem; }
.research-list article { border-top: 2px solid var(--navy); padding-top: 1rem; }
.research-list p { color: var(--muted); font-size: .92rem; }
.plain-link { font-size: .86rem; font-weight: 700; }
.selected-list { border-top: 1px solid var(--line); }
.selected-paper { display: grid; grid-template-columns: 65px minmax(0, 1fr) 150px; gap: 1rem 1.4rem; padding: 1.25rem 0; border-bottom: 1px solid var(--line); }
.selected-paper .year, .selected-paper .venue { color: var(--muted); font-size: .8rem; }
.selected-paper h3 { font-family: var(--sans); font-size: .96rem; line-height: 1.45; }
.selected-paper h3 a { color: var(--navy); text-decoration: none; }
.selected-paper h3 a:hover { color: var(--accent); }

.page-head { padding: clamp(3.8rem, 8vw, 6rem) 0 2.5rem; border-bottom: 1px solid var(--line); }
.page-head h1 { max-width: 18ch; font-size: clamp(2.65rem, 6vw, 4.45rem); }
.page-head .lede { max-width: 760px; }
main > article { width: min(760px, calc(100% - 2.5rem)); margin-inline: auto; padding: 5rem 0; }

.research-chapter { display: grid; grid-template-columns: 110px minmax(0, 1fr); gap: 2rem 3rem; padding: 4.2rem 0; border-bottom: 1px solid var(--line); }
.chapter-number { color: var(--accent); font-family: var(--serif); font-size: 1.2rem; }
.chapter-copy { max-width: 780px; }
.chapter-copy h2 { max-width: 25ch; }
.chapter-copy ul { padding-left: 1.2rem; }
.research-figure { margin: 2rem 0 0; }
.research-figure img { display: block; width: min(100%, 720px); background: #fff; }
.research-figure figcaption { max-width: 720px; padding-top: .65rem; color: var(--muted); font-size: .76rem; }

/* Interactive forward model */
.simulator { padding: clamp(3.5rem, 7vw, 5.3rem) 0; border-bottom: 1px solid var(--line); }
.simulator-intro { max-width: 790px; margin-bottom: 2rem; }
.simulator-layout { display: grid; grid-template-columns: 270px minmax(0, 1fr); gap: clamp(2rem, 5vw, 3.8rem); align-items: start; }
.sim-controls { border-top: 1px solid var(--line); }
.sim-controls fieldset { min-width: 0; margin: 0; padding: 0; border: 0; }
.sim-controls legend { width: 100%; padding: 1rem 0 .2rem; color: var(--muted); font-size: .68rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.sim-control { display: block; padding: .7rem 0 .85rem; border-bottom: 1px solid var(--line); }
.control-row { display: flex; justify-content: space-between; gap: 1rem; color: var(--navy); font-size: .78rem; font-weight: 600; }
.control-row output { color: var(--accent); font-variant-numeric: tabular-nums; }
.sim-control input[type="range"] { width: 100%; margin: .55rem 0 0; accent-color: var(--accent); }
.sim-results { min-width: 0; }
.sim-figures { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.4rem; align-items: center; }
.sim-figure { margin: 0; min-width: 0; }
.sim-figure svg { display: block; width: 100%; height: auto; overflow: visible; }
.sim-figure canvas { display: block; width: 100%; height: auto; border: 1px solid var(--line); background: #11191f; }
.sim-figure figcaption { margin-top: .4rem; color: var(--muted); font-size: .73rem; text-align: center; }
.chart-frame { fill: none; stroke: var(--line); stroke-width: 1; }
.chart-grid { fill: none; stroke: #e2e0da; stroke-width: 1; }
.chart-line { fill: none; stroke: var(--accent); stroke-width: 2.25; stroke-linejoin: round; stroke-linecap: round; }
.phase-guide { stroke: var(--warm); stroke-width: 1.2; }
.phase-dot { fill: var(--warm); stroke: var(--paper); stroke-width: 2; }
.chart-text { fill: var(--muted); font: 11px var(--sans); }
.chart-title { fill: var(--ink); font: 12px var(--sans); font-weight: 600; }
.sim-readout { display: flex; flex-wrap: wrap; gap: .45rem 1.35rem; margin-top: 1rem; padding-top: .8rem; border-top: 1px solid var(--line); color: var(--muted); font-size: .78rem; }
.sim-readout strong { color: var(--navy); font-variant-numeric: tabular-nums; }
.method-note { max-width: 850px; margin-top: 1.1rem; color: var(--muted); font-size: .74rem; }

.publication-tools { display: grid; grid-template-columns: minmax(0, 2fr) minmax(10rem, 1fr); gap: .8rem; max-width: 46rem; padding: 2rem 0; border-bottom: 1px solid var(--line); }
.publication-tools label { color: var(--muted); font-size: .7rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; }
.publication-tools input, .publication-tools select { width: 100%; min-height: 42px; margin-top: .35rem; padding: .45rem .55rem; border: 1px solid var(--line); border-radius: 0; background: #fff; color: var(--ink); font: inherit; font-size: .82rem; }
.publication-count { margin: 1.05rem 0 0; color: var(--muted); font-size: .78rem; }
.publication-list { padding-bottom: 5rem; }
.publication-item { display: grid; grid-template-columns: 60px minmax(0, 1fr); gap: 1.4rem; padding: 1.45rem 0; border-bottom: 1px solid var(--line); }
.publication-item[hidden] { display: none; }
.publication-year { color: var(--muted); font-size: .8rem; }
.publication-item h2 { margin: 0 0 .35rem; font-family: var(--sans); font-size: .98rem; line-height: 1.45; }
.publication-item h2 a { color: var(--navy); text-decoration: none; }
.publication-item h2 a:hover { color: var(--accent); }

.cv-grid { display: grid; grid-template-columns: 185px minmax(0, 1fr); gap: 3rem; padding: 4.2rem 0 6rem; }
.cv-nav { position: sticky; top: 1.5rem; align-self: start; display: flex; flex-direction: column; border-top: 1px solid var(--line); }
.cv-nav a { padding: .55rem 0; border-bottom: 1px solid var(--line); color: var(--muted); font-size: .76rem; text-decoration: none; }
.cv-section { padding-bottom: 3rem; margin-bottom: 3rem; border-bottom: 1px solid var(--line); scroll-margin-top: 2rem; }
.cv-section:last-child { border-bottom: 0; }
.cv-row { display: grid; grid-template-columns: 140px minmax(0, 1fr); gap: 1.4rem; padding: .85rem 0; border-top: 1px solid var(--line); }
.cv-row time { color: var(--muted); font-size: .78rem; }
.cv-row h3 { margin: 0; font-family: var(--sans); font-size: .94rem; }
.cv-row p { margin: .2rem 0 0; color: var(--muted); font-size: .84rem; }
.cv-note { max-width: 720px; color: var(--muted); font-size: .83rem; }

.about-grid { display: grid; grid-template-columns: 260px minmax(0, 650px); gap: clamp(2.5rem, 7vw, 5.5rem); padding: 4.2rem 0 6.2rem; }
.about-grid .portrait { align-self: start; }
.about-copy h1 { font-size: clamp(2.65rem, 6vw, 4.45rem); }
.about-copy h2 { margin-top: 2.4rem; font-size: 1.5rem; }

.site-footer { padding: 1.7rem 0; border-top: 1px solid var(--line); }
.footer-row { display: flex; justify-content: space-between; gap: 1.5rem; color: var(--muted); font-size: .74rem; }
.footer-row p { margin: 0; }
.footer-row a { color: var(--muted); text-decoration: none; }
.footer-row a:hover { color: var(--accent); }
:focus-visible { outline: 3px solid rgba(23,107,120,.35); outline-offset: 3px; }

@media (max-width: 820px) {
  .site-nav { align-items: flex-start; flex-direction: column; gap: .55rem; padding: .9rem 0; }
  .home-intro { grid-template-columns: minmax(210px, 280px) minmax(0, 1fr); gap: 2.5rem; }
  .research-list { grid-template-columns: 1fr; }
  .section-heading { grid-template-columns: 1fr; gap: .35rem; }
  .simulator-layout, .cv-grid { grid-template-columns: 1fr; }
  .sim-controls { display: grid; grid-template-columns: 1fr 1fr; gap: 0 1.5rem; }
  .cv-nav { position: static; flex-direction: row; flex-wrap: wrap; gap: 0 1rem; }
  .cv-nav a { border-bottom: 0; }
}

@media (max-width: 620px) {
  .shell { width: min(100% - 1.5rem, 1080px); }
  .site-nav nav { gap: .25rem .85rem; }
  .home-intro { grid-template-columns: 1fr; padding-top: 3.3rem; }
  .home-intro .portrait { width: min(320px, 88vw); }
  .about-grid .portrait { width: min(280px, 80vw); }
  .research-chapter { grid-template-columns: 1fr; gap: .45rem; padding: 3.3rem 0; }
  .sim-controls, .sim-figures { grid-template-columns: 1fr; }
  .publication-tools { grid-template-columns: 1fr; }
  .selected-paper { grid-template-columns: 50px minmax(0, 1fr); }
  .selected-paper .venue { grid-column: 2; }
  .cv-row { grid-template-columns: 1fr; gap: .15rem; }
  .about-grid { grid-template-columns: 1fr; padding-top: 3.3rem; }
  .footer-row { flex-direction: column; }
}

@media (prefers-color-scheme: dark) {
  :root { --paper: #11181d; --ink: #e3e7e5; --navy: #edf2f0; --muted: #aeb8b8; --line: #344248; --accent: #76b8c1; --warm: #de8a57; }
  .site-header { background: rgba(17,24,29,.97); }
  .lede { color: #c4cccb; }
  .publication-tools input, .publication-tools select { background: #182126; }
  .chart-grid { stroke: #2b373c; }
  .research-figure img { background: #fff; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}