:root {
  --blue: #003f88;
  --blue-dark: #003f88;
  --ink: #353535;
  --muted: #707070;
  --rule: #d9d9d9;
  --paper: #ffffff;
  --wash: #f4f7f9;
  --width: 1024px;
  --background-width: 1360px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: #fff url("images/background.gif") repeat-y top center;
  background-size: var(--background-width) 100%;
  font: 15px/1.58 Verdana, Tahoma, Arial, sans-serif;
}
a { color: var(--blue); font-weight: 700; text-decoration: none; }
a:hover, a:focus { color: var(--blue-dark); text-decoration: underline; }
p { margin: 0 0 1.05em; }
ul, ol { margin: 0.3em 0 1.15em; padding-left: 1.45em; }
li { margin: 0.25em 0; }
img { max-width: 100%; height: auto; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: #fff;
  padding: 8px 12px;
  z-index: 100;
}
.skip-link:focus { left: 10px; }

#wrap {
  width: min(calc(100% - 32px), var(--width));
  margin: 18px auto 0;
}

#header {
  position: relative;
  padding-top: 3px;
}
#toplinks {
  margin: 0;
  text-align: right;
  font-size: 0.88em;
}
#toplinks a { color: #777; font-weight: 400; }
h1 {
  margin: 6px 0 4px 6px;
  color: var(--blue);
  font-family: "Palatino Linotype", "Book Antiqua", Palatino, Georgia, serif;
  font-size: clamp(2.5rem, 5.5vw, 4.35rem);
  font-weight: 700;
  letter-spacing: -1.5px;
  line-height: 1;
}
h1 a { color: var(--blue); font-weight: inherit; }
html[lang="zh-CN"] h1 {
  font-family: "KaiTi", "STKaiti", "Kaiti SC", "BiauKai", serif;
}
#slogan {
  margin: 9px 0 25px 10px;
  color: #6b6b6b;
  font-family: "Palatino Linotype", "Book Antiqua", Palatino, Georgia, serif;
  font-size: 1.24rem;
  font-weight: 600;
}

#main {
  display: grid;
  grid-template-columns: 224px minmax(0, 1fr);
  gap: 40px;
  border-top: 1px solid var(--rule);
  padding-top: 24px;
}
#content {
  grid-column: 2;
  grid-row: 1;
  min-width: 0;
  text-align: justify;
  overflow-wrap: anywhere;
}
#sidebar { grid-column: 1; grid-row: 1; font-size: 0.9rem; }
#sidebar h2 {
  margin: 0 0 9px;
  padding: 0 0 5px;
  font-size: 1.02rem;
}
#sidebar ul { list-style: none; padding: 0; margin: 0 0 26px; }
#sidebar li { margin: 0; padding: 1px 0; }
#sidebar nav li a {
  display: block;
  border-left: 3px solid transparent;
  padding: 2px 6px;
  font-size: 1rem;
  line-height: 1.4;
}
#sidebar nav li.current a {
  border-color: var(--blue);
  background: var(--wash);
  color: var(--blue-dark);
}
#updatebar li {
  color: #5b5b5b;
  line-height: 1.38;
  margin-bottom: 10px;
}
#updatebar time {
  display: block;
  color: #999;
  font-size: 0.76rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.readmore { margin-top: -10px; text-align: right; font-size: 0.86rem; }

h2, h3, h4, h5 {
  color: var(--blue);
  font-weight: 700;
  line-height: 1.28;
}
h2 {
  margin: 0 0 16px;
  padding: 0 1px 6px;
  border-bottom: 4px solid var(--rule);
  font-size: 1.52rem;
}
h3 {
  margin: 30px 0 12px;
  padding: 2px 0 5px;
  border-bottom: 1px solid var(--rule);
  font-size: 1.2rem;
}
h4 { margin: 21px 0 5px; font-size: 1.04rem; }
h5 { margin: 15px 0 4px; font-size: 1rem; }

.portrait { margin: 0 0 20px; text-align: center; }
.portrait img {
  border: 1px solid #d7d7d7;
  padding: 4px;
  background: #fff;
  box-shadow: 0 8px 24px rgb(0 0 0 / 8%);
}
.box {
  background: var(--blue);
  color: #fff;
  padding: 15px 18px;
  line-height: 1.62;
  margin: 22px 0 8px;
  box-shadow: 0 7px 18px rgb(64 136 184 / 18%);
}
.box a { color: #fff; }
.contact-box { text-align: left; }

.page-note {
  color: var(--muted);
  font-size: 0.91rem;
  margin-bottom: 15px;
}

.timeline { margin: 0 0 28px; }
.timeline-item {
  display: grid;
  grid-template-columns: 145px minmax(0, 1fr);
  gap: 18px;
  padding: 10px 0;
  border-bottom: 1px solid #eee;
}
.timeline .period { color: #777; font-variant-numeric: tabular-nums; }
.timeline .entry strong { display: block; color: #333; }
.timeline .entry span { color: #5e5e5e; }

.toc {
  border: 1px solid var(--rule);
  background: var(--wash);
  margin: 0 0 28px;
  padding: 12px 14px;
}
.toc ul {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 3px 18px;
  margin: 0;
  padding: 0;
}
.toc li { display: flex; justify-content: space-between; gap: 8px; }
.toc span { color: #8a8a8a; font-size: 0.82rem; }

.publication-list { padding-left: 1.55em; }
.publication-list li {
  margin: 0 0 0.78em;
  padding-left: 0.18em;
  line-height: 1.48;
  text-align: left;
}
.publication-list li::marker { color: var(--blue); font-size: 0.9em; }
.publication-list strong { color: #000; }

.notice-box {
  background: var(--wash);
  border-left: 4px solid var(--blue);
  margin: 25px 0;
  padding: 13px 16px;
}

.award-list { list-style: none; padding: 0; }
.award-list li {
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr);
  gap: 14px;
  padding: 8px 0;
  border-bottom: 1px solid #eee;
  text-align: left;
}
.award-list time { color: #777; font-variant-numeric: tabular-nums; }
.award-list strong { display: block; color: #333; }
.award-list span { color: #666; font-size: 0.92em; }

.archive-year { margin-bottom: 28px; }
.archive-list { list-style: none; padding: 0; }
.archive-list li {
  display: grid;
  grid-template-columns: 145px minmax(0, 1fr);
  gap: 15px;
  padding: 8px 0;
  border-bottom: 1px solid #eee;
  text-align: left;
}
.archive-list time { color: #777; }

#footer {
  clear: both;
  margin: 44px 0 18px;
  padding: 12px 0;
  border-top: 4px solid var(--rule);
  color: #8a8a8a;
  font-size: 0.82rem;
  text-align: right;
}
#footer p { margin: 0; }
#footer a { color: #777; }

@media (max-width: 820px) {
  #wrap { width: calc(100% - 26px); margin-top: 8px; }
  #main { grid-template-columns: 1fr; gap: 26px; }
  #sidebar {
    grid-row: 1;
    grid-column: 1;
    display: block;
    border-bottom: 1px solid var(--rule);
    padding-bottom: 16px;
  }
  #sidebar nav ul { display: grid; grid-template-columns: 1fr 1fr; gap: 1px 8px; }
  #sidebar nav li a { font-size: 0.95rem; }
  #updatebar { display: none; }
  #content { grid-row: 2; grid-column: 1; text-align: left; }
  .timeline-item { grid-template-columns: 112px minmax(0, 1fr); gap: 10px; }
}

@media (max-width: 520px) {
  body { font-size: 14px; }
  #slogan { font-size: 1.03rem; }
  .toc ul { grid-template-columns: 1fr; }
  .timeline-item, .award-list li, .archive-list li { grid-template-columns: 1fr; gap: 3px; }
  .award-list time, .archive-list time { font-size: 0.86em; }
}

@media print {
  body { background: #fff; font-size: 11pt; }
  #wrap { width: 100%; margin: 0; }
  #sidebar, #toplinks, .skip-link, #footer a { display: none; }
  #main { display: block; border: 0; }
  #footer { border: 0; }
  a { color: inherit; text-decoration: none; }
  .publication-list li { break-inside: avoid; }
}