.zh-research {
  --zh-ink: #282d30;
  --zh-body: #414b50;
  --zh-muted: #65716f;
  --zh-accent: #216b63;
  --zh-rule: #dfe5e3;
  max-width: 1000px;
  margin: 0 auto;
  color: var(--zh-body);
  font-family: "Times New Roman", "Songti SC", SimSun, serif;
  font-size: 18px;
  line-height: 1.9;
  text-align: left;
  overflow-wrap: break-word;
}

.zh-research * { box-sizing: border-box; min-width: 0; letter-spacing: 0; }
.zh-research .fas { font-family: "Font Awesome 5 Free"; font-weight: 900; }
.zh-research a { color: var(--zh-accent); text-decoration: none; }
.zh-research a:hover { text-decoration: underline; text-underline-offset: 5px; }
.zh-research a:focus-visible { outline: 2px solid var(--zh-accent); outline-offset: 5px; }
.zh-research h1,
.zh-research h2,
.zh-research h3 { margin: 0; padding: 0; border: 0; color: var(--zh-ink); text-align: left; }
.zh-research h1::before,
.zh-research h2::before,
.zh-research h3::before { display: none; }
.zh-research p { margin: 0; font-size: inherit; line-height: inherit; }

.zh-research .zh-utility {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 24px;
  margin: 4px 0 34px;
  font-size: 15px;
  line-height: 1.5;
}
.zh-utility a { display: inline-flex; align-items: center; gap: 9px; color: var(--zh-muted); }
.zh-utility .fas { font-size: 11px; }
.zh-research .zh-header { padding-bottom: 32px; }
.zh-research .zh-header h1 {
  font-family: "Times New Roman", "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: 40px;
  font-weight: 600;
  line-height: 1.4;
}
.zh-research .zh-name { margin: 8px 0 14px; color: var(--zh-accent); font-size: 22px; line-height: 1.4; }
.zh-research .zh-affiliation { color: var(--zh-muted); font-size: 16px; line-height: 1.65; }
.zh-affiliation span { padding: 0 5px; }
.zh-research .zh-introduction { max-width: 780px; margin-top: 20px; font-size: 19px; line-height: 1.95; }

.zh-research .zh-topics { margin-bottom: 48px; padding-top: 22px; border-top: 1px solid var(--zh-rule); }
.zh-research .zh-topics h2 {
  margin-bottom: 14px;
  color: var(--zh-muted);
  font-family: "Times New Roman", "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: 14px;
  font-weight: 400;
  line-height: 1.5;
}
.zh-topics ol { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 36px; margin: 0; padding: 0; list-style: none; }
.zh-topics li { margin: 0; padding: 0; border-bottom: 1px solid var(--zh-rule); }
.zh-topics a {
  display: grid;
  grid-template-columns: 25px minmax(0, 1fr) 14px;
  align-items: center;
  gap: 12px;
  min-height: 58px;
  padding: 13px 4px;
  color: var(--zh-ink);
  font-family: "Times New Roman", "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: 16px;
  line-height: 1.7;
}
.zh-topics a:hover { background: #f3f7f5; color: var(--zh-accent); text-decoration: none; }
.zh-topic-number { color: var(--zh-accent); font-family: "Times New Roman", Times, serif; font-weight: 400; }
.zh-topics .fas { color: var(--zh-muted); font-size: 11px; text-align: right; }

.zh-research .zh-topic-section { margin: 0 0 46px; scroll-margin-top: 84px; }
.zh-topic-heading { display: flex; align-items: baseline; gap: 14px; padding-bottom: 20px; border-bottom: 1px solid var(--zh-rule); }
.zh-topic-heading > .zh-topic-number { flex: 0 0 28px; font-size: 24px; line-height: 1.5; }
.zh-research .zh-topic-heading h2 {
  font-family: "Times New Roman", "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: 23px;
  font-weight: 600;
  line-height: 1.6;
}
.zh-topic-count { flex-shrink: 0; margin-left: auto; color: var(--zh-muted); font-size: 14px; white-space: nowrap; }
.zh-research .zh-study {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 34px;
  margin: 0;
  padding: 30px 0;
  border: 0;
  border-bottom: 1px solid var(--zh-rule);
  border-radius: 0;
  background: none;
  box-shadow: none;
}
.zh-study:last-child { border-bottom: 0; padding-bottom: 0; }
.zh-research .zh-study-year { color: var(--zh-accent); font-size: 20px; line-height: 1.4; }
.zh-research .zh-study-journal { margin-top: 10px; color: var(--zh-muted); font-size: 15px; line-height: 1.6; }
.zh-research .zh-study h3 { font-family: "Times New Roman", Times, serif; font-size: 25px; font-weight: 700; line-height: 1.3; }
.zh-study h3 a { color: var(--zh-ink); }
.zh-study h3 a:hover { color: var(--zh-accent); }
.zh-research .zh-study-summary { margin: 17px 0 16px; font-size: 18px; line-height: 1.95; }
.zh-study-link { display: inline; font-size: 15px; line-height: 1.8; }
.zh-study-link .fas { margin-left: 8px; font-size: 11px; }
.zh-research .zh-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 20px;
  margin-top: 46px;
  padding: 24px 0;
  border-top: 1px solid var(--zh-rule);
  font-size: 16px;
}
.zh-footer .fas { margin: 0 5px; font-size: 12px; }
#zh-research { scroll-margin-top: 84px; }

@media (max-width: 1100px) {
  .zh-research .zh-study { grid-template-columns: 135px minmax(0, 1fr); gap: 25px; }
  .zh-research .zh-topic-heading h2 { font-size: 21px; }
}

@media (max-width: 700px) {
  .zh-research .zh-utility { margin-bottom: 28px; font-size: 14px; }
  .zh-research .zh-header h1 { font-size: 32px; }
  .zh-research .zh-name { font-size: 20px; }
  .zh-research .zh-affiliation { font-size: 15px; }
  .zh-research .zh-introduction { font-size: 18px; }
  .zh-research .zh-topics { margin-bottom: 34px; }
  .zh-topics ol { grid-template-columns: minmax(0, 1fr); }
  .zh-topics a { min-height: 54px; }
  .zh-topic-heading { flex-wrap: wrap; gap: 4px 10px; }
  .zh-topic-heading > .zh-topic-number { flex-basis: 24px; font-size: 21px; }
  .zh-research .zh-topic-heading h2 { flex: 1 1 calc(100% - 40px); font-size: 21px; }
  .zh-topic-count { margin-left: 34px; font-size: 13px; }
  .zh-research .zh-study { grid-template-columns: minmax(0, 1fr); gap: 12px; padding: 25px 0; }
  .zh-study-meta { display: flex; align-items: baseline; gap: 12px; }
  .zh-research .zh-study-year { flex: 0 0 40px; font-size: 17px; }
  .zh-research .zh-study-journal { margin: 0; font-size: 14px; line-height: 1.5; }
  .zh-research .zh-study h3 { font-size: 23px; line-height: 1.35; }
  .zh-research .zh-study-summary { font-size: 17px; line-height: 1.95; }
  .zh-research .zh-footer { font-size: 15px; }
}