/* ===== 基础主题 ===== */
:root {
  --bg: #ffffff;
  --text: #0f172a;          /* slate-900 */
  --muted: #475569;         /* slate-600 */
  --line: #e2e8f0;          /* slate-200 */
  --brand: #2563eb;         /* blue-600 */
  --card: #ffffff;
  --shadow: 0 8px 24px rgba(15,23,42,0.06);
  --page-w: 1160px;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

/* ===== 顶部导航 ===== */
.topnav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255,255,255,0.8);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.navwrap {
  max-width: var(--page-w);
  margin: 0 auto; padding: 10px 16px;
  display: flex; gap: 16px; align-items: center; flex-wrap: wrap;
}
.navwrap a {
  text-decoration: none; color: var(--muted);
  padding: 6px 8px; border-radius: 8px;
}
.navwrap a:hover { color: var(--brand); background: #eff6ff; }
.navwrap .brand { color: var(--text); font-weight: 700; margin-right: 8px; }

/* ===== 页面布局 ===== */
.page {
  max-width: var(--page-w);
  margin: 0 auto; padding: 24px 16px;
  display: grid; gap: 24px;
  grid-template-columns: 280px 1fr;
}

/* ===== 左侧栏 ===== */
.sidebar {
  position: sticky; top: 64px;
  align-self: start;
  padding: 20px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
}
.avatar {
  width: 220px; height: 220px;
  border-radius: 50%;
  object-fit: cover;
  display: block; margin: 0 auto 12px;
  border: 1px solid var(--line);
}
.name { text-align: center; margin: 8px 0 2px; font-size: 22px; }
.subtitle { text-align: center; color: var(--muted); font-size: 14px; }
.affil { text-align: center; color: var(--muted); margin: 10px 0 12px; }

.links { list-style: none; margin: 0; padding: 0; }
.links li { padding: 6px 0; color: var(--muted); }
.links a { color: var(--brand); text-decoration: none; }
.links a:hover { text-decoration: underline; }

.quicknav {
  margin-top: 14px; display: grid; gap: 8px;
}
.quicknav a {
  display: block; padding: 8px 10px;
  border: 1px solid var(--line); border-radius: 10px;
  text-decoration: none; color: var(--muted);
}
.quicknav a:hover { border-color: var(--brand); color: var(--brand); background: #eff6ff; }

/* ===== 正文卡片 ===== */
.content { display: grid; gap: 16px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px 22px;
  box-shadow: var(--shadow);
}
.card h2 { margin: 0 0 10px; font-size: 20px; }
.card h3 { margin: 12px 0 6px; font-size: 16px; }
.intro { font-size: 16px; }

.bullets { margin: 6px 0 0 0; padding-left: 20px; }
.bullets li { margin: 4px 0; }

.cards {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px,1fr)); gap: 12px;
}
.cards li {
  border: 1px solid var(--line); border-radius: 12px; padding: 14px;
}

.timeline { list-style: none; padding: 0; margin: 0; }
.timeline li { display: grid; grid-template-columns: 120px 1fr; gap: 16px; padding: 8px 0; }
.timeline .time { color: var(--muted); }

.list { list-style: none; padding: 0; margin: 0; }
.list li { padding: 6px 0; border-bottom: 1px dashed var(--line); }
.list li:last-child { border-bottom: 0; }
.list .time { display: inline-block; width: 60px; color: var(--muted); }

.pubs { margin: 0; padding-left: 20px; }
.pubs li { margin: 6px 0; }

/* ===== 页脚 ===== */
.footer { color: var(--muted); font-size: 14px; text-align: center; padding: 16px 0; }

/* ===== 响应式 ===== */
@media (max-width: 960px) {
  .page { grid-template-columns: 1fr; }
  .sidebar { position: relative; top: 0; }
  .avatar { width: 160px; height: 160px; }
  /* 一级要点 */
.feature-list { margin: 0; padding-left: 1.2em; }
.feature-list > li { margin: 12px 0; }
.feature-list .label { font-weight: 700; }

/* 二级子要点 */
.feature-list .subpoints {
  margin: 6px 0 0 1.2em;   /* 与粗体标题的间距、缩进 */
  list-style: disc;
}
.feature-list .subpoints li { margin: 4px 0; }
  /* 仅调小二级子弹点（li 里面再嵌套的 ul li） */
li > ul > li {
  font-size: 0.92em;   /* 0.90–0.96 自行微调 */
  line-height: 1.55;
  color: #555;         /* 可选：略浅一点 */
  margin: 2px 0;
}

/* （可选）让二级列表与一级标题略开一点距离 */
li > ul {
  margin-top: 6px;
  padding-left: 1.2em; /* 缩进微调 */
}

}

/* Chip layout gallery */
.chip-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 14px 0 18px;
}
.chip-figure { margin: 0; min-width: 0; }
.chip-figure a {
  display: block;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: #f8fafc;
}
.chip-figure img {
  display: block;
  width: 100%;
  height: 250px;
  object-fit: contain;
}
.chip-figure figcaption {
  margin-top: 6px;
  font-size: 13px;
  color: var(--muted);
  text-align: center;
}
@media (max-width: 620px) {
  .chip-gallery { grid-template-columns: 1fr; }
  .chip-figure img { height: auto; max-height: 340px; }
}

/* Academic homepage refinement */
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body { line-height: 1.65; }
.navwrap { gap: 5px 9px; }
.navwrap a { font-size: 13px; white-space: nowrap; }
.navwrap .brand { font-size: 15px; margin-right: auto; }
.page { grid-template-columns: minmax(240px,270px) minmax(0,1fr); gap: 22px; padding-top: 28px; }
.sidebar { top: 76px; }
.content { min-width: 0; gap: 18px; }
.card { padding: 24px 28px; scroll-margin-top: 85px; }
.card h2 { font-size: 21px; letter-spacing: -.02em; margin-bottom: 14px; }
.card h3 { font-size: 16px; margin: 19px 0 6px; line-height: 1.45; }
.card h4 { font-size: 15px; font-weight: 650; margin: 14px 0 5px; }
.card p { margin: 9px 0; }
.card ul { margin-top: 8px; padding-left: 20px; }
.card li { margin-bottom: 5px; }
.card a { color: var(--brand); text-decoration: none; }
.card a:hover { text-decoration: underline; }
.card a:focus-visible, .quicknav a:focus-visible, .navwrap a:focus-visible { outline: 2px solid var(--brand); outline-offset: 3px; }
.intro p { margin: 0; }
.project-group-title { border-top: 1px solid var(--line); padding-top: 16px; margin-top: 26px !important; }
.pubs { padding-left: 22px; }
.pubs li { margin-bottom: 18px; line-height: 1.75; }
.pubs li:last-child { margin-bottom: 0; }
.timeline li { grid-template-columns: 110px minmax(0,1fr); gap: 12px; padding: 10px 0; }
.timeline .time { font-size: 14px; white-space: nowrap; }
.chip-figure a:hover { border-color: var(--brand); }
.chip-figure img { transition: transform .18s ease; }
.chip-figure a:hover img { transform: scale(1.015); }
@media (max-width: 960px) {
  .page { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .navwrap .brand { margin-right: 12px; }
  .quicknav { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 600px) {
  .page { padding: 14px 12px; gap: 14px; }
  .navwrap { padding: 8px 12px; gap: 4px; }
  .navwrap a { font-size: 12px; padding: 5px 6px; }
  .navwrap .brand { width: 100%; }
  .card { padding: 19px 17px; border-radius: 13px; }
  .sidebar { padding: 16px; }
  .quicknav { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .timeline li { grid-template-columns: 1fr; gap: 2px; }
  .edu .row { grid-template-columns: 90px minmax(0,1fr); }
  .chip-gallery { gap: 18px; }
  .chip-figure img { max-height: 380px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .chip-figure img { transition: none; }
}