:root {
  --ink: #1C1F23;
  --muted: #5A6069;
  --accent: #1E5E58;
  --rule: #E3E5E8;
  --bg: #FFFFFF;
  --sans: "Instrument Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
}

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 16px;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 2px; }

/* Header */

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 24px;
  padding: 40px 0 16px;
  border-bottom: 1px solid var(--rule);
}

.site-name {
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.site-name:hover { text-decoration: none; }

.site-nav { display: flex; gap: 22px; font-size: 15px; }
.site-nav a { color: var(--muted); }
.site-nav a[aria-current="page"] { color: var(--ink); font-weight: 600; }

main { padding: 40px 0 64px; }

/* Home */

.intro {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 36px;
  align-items: start;
}

.intro img {
  width: 220px;
  height: 275px;
  object-fit: cover;
  border-radius: 2px;
  background: var(--rule);
}

.intro p { margin: 0 0 1.25em; }
.intro p:last-of-type { margin-bottom: 0; }

.pronounce { color: #6B7178; font-size: 14.5px; }

.links {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--rule);
  display: flex;
  flex-wrap: wrap;
  gap: 6px 22px;
  font-size: 15px;
}

/* Research */

h1 {
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 0 0 8px;
}

h2 {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 44px 0 4px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--rule);
}

.papers { list-style: none; margin: 0; padding: 0; }

.paper { padding: 18px 0; border-bottom: 1px solid var(--rule); }
.paper:last-child { border-bottom: 0; }

.paper-title {
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.4;
  margin: 0 0 4px;
}
.paper-title a { color: var(--ink); }
.paper-title a:hover { color: var(--accent); }

.coauthors { color: var(--muted); font-size: 14.5px; margin: 0; }

.meta { font-size: 14.5px; margin: 4px 0 0; }
.meta .status { color: var(--ink); }
.meta .sep { color: var(--muted); margin: 0 6px; }

.abs-toggle {
  font: inherit;
  color: var(--accent);
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}
.abs-toggle::after { content: " \25B8"; font-size: 0.8em; }
.abs-toggle[aria-expanded="true"]::after { content: " \25BE"; }
.abs-toggle:hover { text-decoration: underline; text-underline-offset: 2px; }

.abstract p {
  margin: 10px 0 2px;
  padding-left: 14px;
  border-left: 2px solid var(--rule);
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--muted);
}

@media (max-width: 600px) {
  body { font-size: 16px; }
  .site-header { padding-top: 24px; }
  main { padding-top: 28px; }
  .intro { grid-template-columns: 1fr; gap: 20px; }
  .intro img { width: 140px; height: 175px; }
  .paper-title { font-size: 17px; }
}