/* Fonts are hosted on this site (no Google Fonts: they are blocked in mainland China). */
@font-face {
  font-family: "Literata";
  src: url("fonts/literata-roman.woff2") format("woff2");
  font-weight: 200 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Literata";
  src: url("fonts/literata-italic.woff2") format("woff2");
  font-weight: 200 900;
  font-style: italic;
  font-display: swap;
}

:root {
  --paper: #F5F7F6;
  --ink: #18212B;
  --muted: #5A6570;
  --rule: #D5DCD8;
  --jade: #2E6B5E;
  --jade-soft: #E2ECE8;
  --serif: "Literata", "Noto Serif SC", "Songti SC", "SimSun", Georgia, serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #151B20;
    --ink: #E3E8E6;
    --muted: #9AA6AE;
    --rule: #2D3740;
    --jade: #7FBFAE;
    --jade-soft: #1D2B2A;
  }
}

* { box-sizing: border-box; }

html { font-size: 106.25%; } /* 17px */
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1rem;
  line-height: 1.62;
  font-optical-sizing: auto;
  -webkit-text-size-adjust: 100%;
}

a { color: var(--jade); text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, summary:focus-visible { outline: 2px solid var(--jade); outline-offset: 3px; border-radius: 2px; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

/* Layout: a quiet column on the left, the papers on the right. */
.page {
  max-width: 68rem;
  margin: 0 auto;
  padding: 4.5rem 2rem 3rem;
  display: grid;
  grid-template-columns: 15rem minmax(0, 40rem);
  column-gap: 5rem;
}

.side { position: sticky; top: 4.5rem; align-self: start; }

.name {
  margin: 0;
  font-size: 1.9rem;
  line-height: 1.15;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.name .cjk {
  display: block;
  margin-top: 0.35rem;
  font-size: 1.15rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--muted);
}
.role { margin: 1.4rem 0 0; color: var(--muted); font-size: 0.92rem; line-height: 1.5; }
.market {
  margin: 1.1rem 0 0;
  padding-left: 0.75rem;
  border-left: 3px solid var(--jade);
  font-size: 0.92rem;
  font-style: italic;
}

.side nav ul, .links { list-style: none; margin: 0; padding: 0; }
.side nav { margin-top: 2.2rem; }
.side nav li { margin: 0.15rem 0; }
.side nav a { color: var(--ink); text-decoration: none; }
.side nav a:hover { color: var(--jade); }
.lang { margin: 1.2rem 0 0; font-size: 0.95rem; }
.links { margin-top: 1.6rem; font-size: 0.86rem; line-height: 1.8; overflow-wrap: anywhere; }

main { min-width: 0; }

.about p { margin: 0 0 1rem; }
.about p:first-child { font-size: 1.12rem; line-height: 1.55; }
.fields, .presented { color: var(--muted); font-size: 0.9rem; }
.fields span, .presented span { font-style: italic; color: var(--ink); margin-right: 0.35em; }

section { margin-top: 3.5rem; }
section.about { margin-top: 0; }

h2 {
  margin: 0 0 1.2rem;
  font-size: 1.35rem;
  font-weight: 600;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--rule);
}
h3.group {
  margin: 2.4rem 0 0.9rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--muted);
}

/* The job market paper is the one loud element on the page. */
.jmp {
  margin: 0 -1.75rem;
  padding: 1.9rem 1.75rem 1.5rem;
  background: var(--jade-soft);
  border-radius: 4px;
}
.jmp-tag { margin: 0; font-style: italic; color: var(--jade); font-size: 0.95rem; }
.jmp-title {
  margin: 0.3rem 0 0.6rem;
  font-size: 2.15rem;
  line-height: 1.12;
  font-weight: 650;
  letter-spacing: -0.015em;
  text-wrap: balance;
}
.jmp-title a { color: var(--ink); text-decoration: none; }
.jmp-title a:hover { color: var(--jade); }
.jmp .abstract { margin: 1rem 0; font-size: 0.96rem; line-height: 1.68; hyphens: auto; }
.jmp .presented { margin: 0; }

.paper-meta { margin: 0; font-size: 0.92rem; color: var(--muted); }

.paper { margin-bottom: 1.6rem; }
.paper h4 { margin: 0 0 0.15rem; font-size: 1.08rem; font-weight: 600; line-height: 1.35; }
.paper h4 a { color: var(--ink); text-decoration: none; }
.paper h4 a:hover { color: var(--jade); }
.paper .presented { margin: 0.35rem 0 0; }
.paper-short { margin: 0.2rem 0 0; font-size: 0.95rem; }

details { margin-top: 0.35rem; font-size: 0.95rem; }
summary { cursor: pointer; color: var(--jade); width: fit-content; }
details p { margin: 0.5rem 0 0.4rem; line-height: 1.66; hyphens: auto; }

.note { margin: -0.4rem 0 0; color: var(--muted); font-size: 0.92rem; }

.entries {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 0.55rem 1.25rem;
  margin: 0;
  font-size: 0.96rem;
}
.entries dt { color: var(--muted); font-variant-numeric: tabular-nums; }
.entries dd { margin: 0; }

.refs {
  list-style: none; margin: 0; padding: 0;
  display: grid; gap: 1.2rem;
  font-size: 0.92rem; line-height: 1.5;
}
.refs a { overflow-wrap: anywhere; }
.tags { display: inline-flex; flex-wrap: wrap; gap: 0.3rem; margin-left: 0.3rem; vertical-align: 0.08em; }
.tag {
  font-size: 0.74rem; line-height: 1.5;
  padding: 0 0.45rem;
  border: 1px solid var(--rule);
  border-radius: 3px;
  color: var(--jade);
  text-decoration: none;
  white-space: nowrap;
}
.tag:hover { border-color: var(--jade); background: var(--jade-soft); }

address { font-style: normal; line-height: 1.6; }

footer { margin-top: 4rem; font-size: 0.82rem; color: var(--muted); }

/* Chinese page: Latin text stays in Literata; Chinese falls back to the reader's system sans-serif,
   which reads better on screen than system Songti (e.g. SimSun on Windows). */
html:lang(zh-Hans) body {
  font-family: "Literata", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
  line-height: 1.8;
  text-align: left;
}
html:lang(zh-Hans) .jmp .abstract, html:lang(zh-Hans) details p { line-height: 1.85; hyphens: manual; }
/* Slanted Chinese characters look broken, so labels stay upright on the Chinese page. */
html:lang(zh-Hans) .jmp-tag, html:lang(zh-Hans) .market,
html:lang(zh-Hans) .fields span, html:lang(zh-Hans) .presented span { font-style: normal; }
html:lang(zh-Hans) .name .cjk { letter-spacing: 0.01em; }
html:lang(zh-Hans) .jmp-title { font-size: 1.85rem; line-height: 1.3; }
.title-en { display: block; margin-top: 0.2rem; font-size: 0.62em; font-weight: 400; color: var(--muted); letter-spacing: 0; }
.paper h4 .title-en { font-size: 0.88em; }

/* Phones and narrow windows: one column, the sidebar becomes a header. */
@media (max-width: 52rem) {
  .page { display: block; padding: 2.25rem 1rem 2rem; }
  .side { position: static; margin-bottom: 2.25rem; }
  .name { font-size: 1.7rem; }
  .side nav { margin-top: 1.2rem; }
  .side nav ul { display: flex; flex-wrap: wrap; gap: 0.2rem 1.1rem; }
  .links { margin-top: 0.8rem; }
  .jmp { margin: 0 -1rem; padding: 1.5rem 1rem 1.25rem; border-radius: 0; }
  .jmp-title { font-size: 1.75rem; }
  .entries { grid-template-columns: 1fr; gap: 0.1rem; }
  .entries dd { margin-bottom: 0.7rem; }
}

@media print {
  .side nav, details summary { display: none; }
  details p { display: block; }
  .page { display: block; }
}