html,
body {
  overflow-x: clip;
}

.paper-jumpnav {
  position: sticky;
  top: 10px;
  z-index: 4;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  width: fit-content;
  max-width: calc(100% - 24px);
  margin: 18px auto 28px;
  padding: 7px;
  border: 1px solid rgba(29, 35, 31, 0.11);
  border-radius: 999px;
  background: rgba(253, 253, 251, 0.92);
  box-shadow: 0 8px 26px rgba(35, 43, 38, 0.08);
  backdrop-filter: blur(12px);
}

.paper-jumpnav a {
  padding: 5px 11px;
  border-radius: 999px;
  color: #4c554f;
  font-family: "Microsoft YaHei", sans-serif;
  font-size: 0.76em;
  font-weight: 650;
  text-decoration: none;
}

.paper-jumpnav a:hover,
.paper-jumpnav a:focus-visible {
  color: #183f31;
  background: #e8f0eb;
  outline: none;
}

#paper-body,
#research-summary,
#writing-bank,
#references {
  scroll-margin-top: 74px;
}

mark[id],
aside.mnote[id] {
  scroll-margin-top: 74px;
}

aside.mnote {
  position: relative;
  font-family: "Source Han Serif SC", "Noto Serif CJK SC", "Microsoft YaHei", Georgia, serif;
}

.formula {
  overflow-wrap: anywhere;
  color: #202723;
  font-family: Georgia, "Times New Roman", serif;
  font-style: italic;
}

.research-panel {
  margin: 44px 0 30px;
  padding: 24px;
  border: 1px solid #ccd7d0;
  border-radius: 14px;
  background: linear-gradient(145deg, #f8fbf9 0%, #f2f6f3 100%);
  box-shadow: 0 18px 50px rgba(37, 55, 44, 0.08);
}

.research-panel.writing-bank {
  border-color: #d8d1c2;
  background: linear-gradient(145deg, #fffdf8 0%, #f8f3e9 100%);
}

.research-panel .eyebrow {
  margin: 0 0 5px;
  color: #617067;
  font-family: "Microsoft YaHei", sans-serif;
  font-size: 0.72em;
  font-weight: 750;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.research-panel h2 {
  margin: 0;
  color: #173d30;
  font-size: 1.38em;
  line-height: 1.35;
}

.research-panel .lede {
  max-width: 720px;
  margin: 10px 0 0;
  color: #4d5952;
  font-size: 0.92em;
}

.summary-grid,
.writing-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 20px;
}

.summary-item,
.writing-card,
.quote-card {
  padding: 15px 16px;
  border: 1px solid rgba(36, 58, 45, 0.11);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.78);
}

.summary-item.wide,
.quote-card {
  grid-column: 1 / -1;
}

.summary-item h3,
.writing-card h3,
.quote-card h3 {
  margin: 0 0 6px;
  color: #264b3d;
  font-family: "Microsoft YaHei", sans-serif;
  font-size: 0.84em;
  letter-spacing: 0.03em;
}

.summary-item p,
.writing-card p,
.quote-card p {
  margin: 0;
  font-size: 0.89em;
  line-height: 1.72;
}

.writing-card .template {
  color: #24352e;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 0.94em;
}

.writing-card .usage,
.quote-card .usage,
.source-note {
  margin-top: 7px;
  color: #6d706b;
  font-size: 0.78em;
}

.quote-card blockquote {
  margin: 7px 0;
  padding-left: 14px;
  border-left: 3px solid #b8a879;
  color: #3e403d;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 0.98em;
}

.source-note {
  padding-top: 12px;
  border-top: 1px solid rgba(80, 72, 52, 0.14);
}

@media (max-width: 680px) {
  .paper-jumpnav {
    position: static;
    justify-content: center;
    width: auto;
    max-width: none;
    border-radius: 14px;
  }

  .research-panel {
    padding: 18px;
  }

  .summary-grid,
  .writing-grid {
    grid-template-columns: 1fr;
  }

  .summary-item.wide,
  .quote-card {
    grid-column: auto;
  }
}