:root {
  --ink: #172334;
  --muted: #5c6978;
  --line: #d9dee5;
  --paper: #ffffff;
  --soft: #f5f7f8;
  --accent: #176b66;
  --accent-dark: #0f514d;
  --max-width: 1050px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 17px;
  line-height: 1.65;
}

a { color: var(--accent); }
a:hover { color: var(--accent-dark); }
img { max-width: 100%; height: auto; }

.container { width: calc(100% - 40px); max-width: var(--max-width); margin: 0 auto; }
.site-header { border-bottom: 1px solid var(--line); background: var(--paper); }
.site-header .container { display: flex; align-items: center; justify-content: space-between; min-height: 68px; gap: 24px; }
.site-name { color: var(--ink); font-family: Georgia, "Times New Roman", serif; font-size: 1.35rem; font-weight: bold; text-decoration: none; }
nav ul { display: flex; flex-wrap: wrap; gap: 24px; margin: 0; padding: 0; list-style: none; }
nav a { padding: 21px 0 18px; color: var(--ink); border-bottom: 3px solid transparent; font-size: .88rem; font-weight: bold; text-decoration: none; }
nav a:hover, nav a[aria-current="page"] { color: var(--accent); border-bottom-color: var(--accent); }

.intro { display: grid; grid-template-columns: 250px 1fr; gap: 55px; align-items: center; padding: 68px 0; }
.portrait { display: block; width: 250px; height: 312px; border-radius: 4px; object-fit: cover; object-position: 50% 23%; }
.eyebrow { margin: 0 0 8px; color: var(--accent); font-size: .78rem; font-weight: bold; letter-spacing: .08em; text-transform: uppercase; }
h1, h2, h3, h4 { color: var(--ink); font-family: Georgia, "Times New Roman", serif; line-height: 1.2; }
h1 { margin: 0 0 8px; font-size: clamp(2.5rem, 6vw, 4.25rem); font-weight: normal; letter-spacing: -.035em; }
h2 { margin: 0; font-size: 1.7rem; }
h3 { margin: 0 0 8px; font-size: 1.16rem; }
h4 { margin: 0 0 5px; font-size: 1rem; }
.title { margin: 0 0 24px; color: var(--muted); font-size: 1.08rem; }
.summary { max-width: 680px; margin: 0; font-family: Georgia, "Times New Roman", serif; font-size: 1.25rem; line-height: 1.65; }
.quick-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.button { display: inline-block; padding: 9px 15px; border: 1px solid var(--accent); border-radius: 3px; color: var(--accent); font-size: .86rem; font-weight: bold; text-decoration: none; }
.button.primary { color: white; background: var(--accent); }
.button:hover { color: white; background: var(--accent-dark); }

.page-heading { padding: 66px 0 46px; border-bottom: 1px solid var(--line); }
.page-heading h1 { max-width: 820px; }
.page-heading .summary { max-width: 800px; margin-top: 20px; color: var(--muted); }
section.content-section { padding: 56px 0; border-top: 1px solid var(--line); }
.page-heading + .content-section { border-top: 0; }
.section-grid { display: grid; grid-template-columns: 190px 1fr; gap: 48px; }
.section-body > :first-child { margin-top: 0; }
.section-body > :last-child { margin-bottom: 0; }
.muted { color: var(--muted); }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card { padding: 24px; border: 1px solid var(--line); border-top: 4px solid var(--accent); border-radius: 3px; background: var(--paper); }
.card p { margin: 0; color: var(--muted); font-size: .94rem; }
.card .number { display: block; margin-bottom: 28px; color: var(--accent); font-weight: bold; }
.feature-list { display: grid; gap: 34px; }
.feature { display: grid; grid-template-columns: 70px 1fr; gap: 22px; }
.feature-number { color: var(--accent); font-family: Georgia, "Times New Roman", serif; font-size: 2.1rem; }
.feature p { margin: 0 0 12px; color: var(--muted); }
.feature ul { margin-bottom: 0; }

.contact-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px 30px; margin: 0; }
.contact-list div { padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.contact-list dt, .label { color: var(--muted); font-size: .76rem; font-weight: bold; letter-spacing: .07em; text-transform: uppercase; }
.contact-list dd { margin: 2px 0 0; }

.timeline, .publication-list, .talk-list, .people-list { margin: 0; padding: 0; list-style: none; }
.timeline > li, .people-list > li { display: grid; grid-template-columns: 155px 1fr; gap: 24px; padding: 0 0 23px; margin: 0 0 23px; border-bottom: 1px solid var(--line); }
.timeline > li:last-child, .people-list > li:last-child { margin-bottom: 0; border-bottom: 0; }
.timeline .when, .people-list .when { color: var(--muted); font-size: .88rem; }
.timeline p, .people-list p { margin: 3px 0 0; color: var(--muted); font-size: .92rem; }

.publication-list { counter-reset: publications; }
.publication-list li { position: relative; padding: 0 0 20px 42px; margin: 0 0 20px; border-bottom: 1px solid var(--line); counter-increment: publications; }
.publication-list li:before { position: absolute; left: 0; top: 1px; color: var(--accent); font-size: .82rem; font-weight: bold; content: counter(publications, decimal-leading-zero); }
.publication-list li:last-child { border-bottom: 0; }
.publication-title { display: block; font-family: Georgia, "Times New Roman", serif; font-weight: bold; }
.publication-meta { display: block; margin-top: 3px; color: var(--muted); font-size: .9rem; }
.subheading { margin: 44px 0 20px; padding-bottom: 9px; border-bottom: 1px solid var(--line); }
.subheading:first-child { margin-top: 0; }
.talk-list li { display: grid; grid-template-columns: 92px 1fr; gap: 20px; padding: 0 0 14px; margin: 0 0 14px; border-bottom: 1px solid var(--line); }
.talk-list .date { color: var(--muted); font-size: .86rem; }
.talk-list .venue { display: block; color: var(--muted); font-size: .88rem; }
details { margin-top: 24px; padding: 16px 18px; border: 1px solid var(--line); border-radius: 3px; }
summary { color: var(--accent); font-weight: bold; cursor: pointer; }
details .talk-list { margin-top: 22px; }
.note { padding: 20px 22px; border-radius: 4px; background: var(--soft); }
.note > :first-child { margin-top: 0; }
.note > :last-child { margin-bottom: 0; }

footer { padding: 30px 0 42px; color: var(--muted); border-top: 1px solid var(--line); font-size: .82rem; }

@media (max-width: 820px) { .cards { grid-template-columns: 1fr; } }
@media (max-width: 760px) {
  body { font-size: 16px; }
  .site-header .container { display: block; padding: 15px 0 10px; }
  nav ul { gap: 6px 18px; margin-top: 7px; }
  nav a { display: inline-block; padding: 4px 0 2px; }
  .intro { grid-template-columns: 125px 1fr; gap: 25px; padding: 45px 0; }
  .portrait { width: 125px; height: 156px; }
  h1 { font-size: clamp(2.1rem, 9vw, 3.2rem); }
  .summary { grid-column: 1 / -1; font-size: 1.1rem; }
  .quick-links { grid-column: 1 / -1; }
  .page-heading { padding: 45px 0 34px; }
  .section-grid { grid-template-columns: 1fr; gap: 22px; }
  .contact-list { grid-template-columns: 1fr; }
  .timeline > li, .people-list > li { grid-template-columns: 1fr; gap: 3px; }
}
@media (max-width: 460px) {
  .container { width: calc(100% - 28px); }
  .intro { grid-template-columns: 1fr; }
  .portrait { width: 160px; height: 200px; }
  .intro-text { grid-column: 1; }
  nav ul { gap: 5px 14px; }
  .feature { grid-template-columns: 42px 1fr; gap: 10px; }
  .feature-number { font-size: 1.55rem; }
  .talk-list li { grid-template-columns: 72px 1fr; gap: 12px; }
}
@media print {
  .site-header { display: none; }
  .intro, section.content-section, .page-heading { padding: 28px 0; }
  .button { border-color: #777; color: #000; }
  a { color: #000; }
  details { border: 0; padding: 0; }
  details > summary { display: none; }
  details > * { display: block; }
}