/* JianleiHan.com — shared stylesheet */

:root {
  --ink: #23211c;
  --ink-soft: #6b665c;
  --paper: #fbfaf6;
  --paper-deep: #efeee7;
  --accent: #2e4d6b;
  --accent-deep: #223a52;
  --rule: #e3e0d6;
  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { font-size: 17px; }
@media (max-width: 600px) { html { font-size: 16px; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  line-height: 1.68;
}

.wrap { max-width: 46rem; margin: 0 auto; padding: 0 1.4rem; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
::selection { background: #d9e2ec; }

/* Header */
.site-header { border-bottom: 1px solid var(--rule); }
.header-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .6rem 1.4rem;
  padding-top: 1.5rem;
  padding-bottom: 1.3rem;
}
.wordmark {
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: .02em;
  color: var(--ink);
}
.wordmark:hover { text-decoration: none; color: var(--accent); }
.site-header nav {
  display: flex;
  gap: 1.15rem;
  font-family: var(--sans);
  font-size: .8rem;
  letter-spacing: .09em;
  text-transform: uppercase;
}
.site-header nav a { color: var(--ink-soft); }
.site-header nav a:hover { color: var(--accent); text-decoration: none; }
.site-header nav a.active { color: var(--accent); }

/* Main layout */
main { padding: 2.7rem 0 3.6rem; }
main section { margin: 0 0 2.5rem; }
main section + section {
  border-top: 1px solid var(--rule);
  padding-top: 1.9rem;
}

h1 { font-size: 2.1rem; font-weight: 600; line-height: 1.15; margin: 0 0 .4rem; }
h1 .cn { font-weight: 400; margin-left: .35rem; }
h2 { font-size: 1.3rem; font-weight: 600; margin: 0 0 1rem; }
h3 { font-size: 1.05rem; font-weight: 600; margin: 0 0 .3rem; }
p { margin: 0 0 1rem; }

/* Hero (home) */
.hero { display: flex; gap: 2.2rem; align-items: flex-start; justify-content: space-between; }
.hero-text { flex: 1 1 auto; }
.headshot {
  flex: none;
  width: 168px;
  height: auto;
  border-radius: 6px;
  box-shadow: 0 1px 4px rgba(35, 33, 28, .2);
}
.role { font-size: 1.05rem; margin: .1rem 0 0; }
.role .affil { color: var(--ink-soft); }
.fields {
  font-family: var(--sans);
  font-size: .78rem;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 1rem 0 0;
}
@media (max-width: 640px) {
  .hero { flex-direction: column-reverse; gap: 1.4rem; }
  .headshot { width: 130px; }
}

/* Publications / papers */
.pub { margin: 0 0 2rem; }
.pub:last-child { margin-bottom: 0; }
.pub-title { font-size: 1.08rem; line-height: 1.45; }
.pub-title a { color: var(--ink); }
.pub-title a:hover { color: var(--accent); }
.pub-meta {
  font-family: var(--sans);
  font-size: .82rem;
  color: var(--ink-soft);
  margin: .15rem 0 .5rem;
}
.pub-meta a { color: inherit; text-decoration: underline; text-decoration-color: var(--rule); text-underline-offset: 3px; }
.pub-meta a:hover { color: var(--accent); text-decoration-color: var(--accent); }
.pub-note { font-size: .95rem; margin: 0 0 .2rem; }
.pub-links { font-family: var(--sans); font-size: .82rem; margin: .45rem 0 0; }
.pub-links a { margin-right: .95rem; }

/* Compact list (selected work on home) */
.sel-list { list-style: none; padding: 0; margin: 0; }
.sel-list li { margin: 0 0 1rem; }
.sel-venue { display: block; font-family: var(--sans); font-size: .82rem; color: var(--ink-soft); }

/* Contact + plain lists */
.contact-list, .plain-list { list-style: none; padding: 0; margin: 0; }
.contact-list li { margin: .4rem 0; }
.contact-label {
  display: inline-block;
  min-width: 7rem;
  font-family: var(--sans);
  font-size: .75rem;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.plain-list li { margin: 0 0 .9rem; }
.item-meta { display: block; font-family: var(--sans); font-size: .82rem; color: var(--ink-soft); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--rule);
  padding: 1.4rem 0 2.4rem;
  font-family: var(--sans);
  font-size: .8rem;
  color: var(--ink-soft);
}
.site-footer p { margin: 0; }
.site-footer a { color: inherit; text-decoration: underline; text-decoration-color: var(--rule); }
.site-footer a:hover { color: var(--accent); }

/* Print */
@media print {
  body { background: #fff; }
  .site-header nav, .site-footer { display: none; }
  a { color: var(--ink); }
}