:root {
  --bg: #f3efe6;
  --ink: #1d1915;
  --muted: #6a6258;
  --faint: #948b80;
  --line: #d8d0c3;
  --accent: #7a3d28;
  --accent-hover: #542616;
  --year: #7a3d28;
  --abstract-bg: #ebe4d7;
  --max: 780px;
  --serif: "Source Serif 4", "Palatino Linotype", Palatino, "Times New Roman", serif;
  --sans: "Source Sans 3", "Segoe UI", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 17px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.55;
}

img {
  max-width: 100%;
  height: auto;
  border: 0;
  vertical-align: middle;
}

a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--accent-hover);
}

.wrap {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 2.25rem 0 0;
}

.site-header {
  margin-bottom: 2rem;
}

.site-title {
  margin: 0;
  font-family: var(--serif);
  font-size: 2.35rem;
  font-weight: 600;
  font-optical-sizing: auto;
  line-height: 1.1;
  letter-spacing: -0.02em;
  text-transform: none;
}

.site-title a {
  color: var(--ink);
  text-decoration: none;
}

.site-title a:hover {
  color: var(--ink);
}

.site-title::after {
  content: "";
  display: block;
  width: 2.4rem;
  height: 3px;
  margin: 0.7rem 0 0.85rem;
  background: var(--accent);
}

.site-description {
  margin: 0 0 1.15rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.main-nav {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.main-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 1.35rem;
  list-style: none;
  margin: 0;
  padding: 0.7rem 0;
}

.main-nav a {
  color: var(--ink);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
}

.main-nav a:hover,
.main-nav a[aria-current="page"],
.main-nav .current-menu-item > a,
.main-nav .current_page_item > a {
  color: var(--accent);
  box-shadow: inset 0 -2px 0 var(--accent);
}

.entry-title {
  margin: 0 0 1.1rem;
  font-family: var(--serif);
  font-size: 1.55rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-transform: none;
}

.entry-content p {
  margin: 0 0 0.95em;
}

.entry-content p:last-child {
  margin-bottom: 0;
}

.about-layout {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 1.4rem 1.6rem;
  align-items: start;
}

.about-layout .entry-title {
  margin-top: 0;
}

.portrait {
  width: 200px;
  height: auto;
  display: block;
  background: #ddd;
  box-shadow: 0 0 0 1px var(--line);
}

.section-title {
  margin: 1.75rem 0 0.65rem;
  font-family: var(--serif);
  font-size: 1.2rem;
  font-style: italic;
  font-weight: 500;
}

.section-title:first-child {
  margin-top: 0;
}

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

.paper-list li {
  display: grid;
  grid-template-columns: 3.4rem 1fr;
  gap: 0.35rem 0.9rem;
  margin: 0 0 1.05rem;
  padding: 0;
}

.paper-year {
  color: var(--year);
  font-family: var(--serif);
  font-size: 0.95rem;
  font-variant-numeric: tabular-nums;
  padding-top: 0.12rem;
}

.paper-line {
  margin: 0;
}

.paper-title {
  font-family: var(--serif);
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
}

a.paper-title:hover {
  color: var(--accent);
  text-decoration: underline;
}

.paper-meta {
  margin: 0.12rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.paper-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 0.85rem;
  margin: 0.28rem 0 0;
  font-size: 0.88rem;
}

.paper-abstract {
  margin: 0.45rem 0 0.1rem;
  padding: 0.6rem 0.75rem;
  color: #3f3a34;
  font-size: 0.92rem;
  line-height: 1.5;
  background: var(--abstract-bg);
}

.paper-abstract[hidden] {
  display: none;
}

.abstract-toggle {
  border: 0;
  padding: 0;
  background: none;
  color: var(--accent);
  font: inherit;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.abstract-toggle:hover {
  color: var(--accent-hover);
}

.contact-list {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 0.7rem 1rem;
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 36rem;
}

.contact-list li {
  display: contents;
}

.contact-list span {
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding-top: 0.15rem;
}

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

.course-list li {
  margin: 0;
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--line);
}

.site-footer {
  clear: both;
  margin: 2.6rem auto 0;
  padding: 1rem 0 2.4rem;
  border-top: 1px solid var(--line);
  color: var(--faint);
  font-size: 0.86rem;
}

.site-footer a {
  color: var(--muted);
}

.content::after {
  content: "";
  display: table;
  clear: both;
}

@media (max-width: 640px) {
  html {
    font-size: 16px;
  }

  .wrap {
    width: calc(100% - 28px);
  }

  .site-title {
    font-size: 1.9rem;
  }

  .about-layout,
  .paper-list li,
  .contact-list {
    grid-template-columns: 1fr;
  }

  .contact-list li {
    display: block;
    margin-bottom: 0.85rem;
  }

  .portrait {
    width: 160px;
  }

  .paper-year {
    padding-top: 0;
  }
}