:root {
  --text: #222222;
  --muted: #6b6f76;
  --line: #e8e8e8;
  --soft: #f7f7f7;
  --accent: #315c8a;
  --max: 1040px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background: #ffffff;
  line-height: 1.65;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, .96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}

.wrap {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.nav-wrap {
  min-height: 66px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  color: var(--text);
  font-weight: 700;
  letter-spacing: .2px;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 14px;
}

.nav a {
  color: #4f5358;
}

.nav a.active {
  color: var(--text);
  font-weight: 700;
}

.page {
  padding: 54px 0 80px;
}

.hero {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 64px;
  align-items: start;
}

.profile-card {
  position: sticky;
  top: 100px;
}

.avatar {
  width: 170px;
  height: 170px;
  border-radius: 50%;
  object-fit: cover;
  background: #eef2f6;
  display: grid;
  place-items: center;
  font-size: 40px;
  font-weight: 700;
  color: #52606d;
  margin-bottom: 22px;
}

.profile-card h1 {
  margin: 0 0 4px;
  font-size: 28px;
}

.role,
.affiliation {
  margin: 4px 0;
  color: var(--muted);
  font-size: 14px;
}

.profile-links {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  font-size: 14px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: 12px;
  font-weight: 700;
}



.hero-copy h2,
.page-title {
  margin: 0 0 18px;
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.hero-copy p {
  font-size: 18px;
  max-width: 760px;
}

.callout {
  margin: 30px 0;
  padding: 22px 24px;
  background: var(--soft);
  border-left: 4px solid var(--accent);
  border-radius: 4px;
  font-size: 18px;
}

.callout-last {
  margin: 2px 0 0;
  font-size: 8px;
}

.pages-block {
  margin-top: 42px;
}

.pages-block h2,
.section-title {
  font-size: 26px;
  margin: 0 0 18px;
}

.page-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-link {
  display: block;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  background: #fff;
}

.page-link:hover {
  text-decoration: none;
  border-color: #cfd6df;
  background: #fbfbfb;
}

.page-link strong {
  display: block;
  margin-bottom: 3px;
}

.page-link span {
  color: var(--muted);
  font-size: 14px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 34px 0 10px;
}

.stat {
  border-top: 2px solid var(--text);
  padding-top: 12px;
}

.stat strong {
  display: block;
  font-size: 22px;
}

.stat span {
  color: var(--muted);
  font-size: 14px;
}

.content {
  max-width: 820px;
}

.section {
  padding: 28px 0;
  border-top: 1px solid var(--line);
}

.presentations-section {
  border-top: none;
}

.cards {
  display: grid;
  gap: 18px;
}

.card {
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.card h3 {
  margin: 6px 0 8px;
  font-size: 20px;
}

.tag {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .08em;
  font-weight: 700;
}

.pub-list,
.timeline {
  padding-left: 0;
  list-style: none;
}

.pub-list li {
  padding: 16px 0;
  /* 每条文献上下的间距，原来是 18px */
  margin: 0;
  line-height: 1.25;
  /* 同一条文献内部的行距 */
  border-bottom: 1px solid var(--line);
}

.pub-list>li:last-child {
  border-bottom: 0;
}

.status {
  color: var(--muted);
  font-style: italic;
  text-decoration: underline;
}

.timeline-item {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 28px;
  padding: 17px 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
}

.timeline-item>span {
  color: var(--muted);
  font-weight: 700;
  line-height: 1.5;
}

.timeline-item>p {
  margin: 0;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.skill {
  padding: 18px;
  background: var(--soft);
  border-radius: 8px;
}

.skill h3 {
  margin-top: 0;
}

.back-home {
  display: inline-block;
  margin-bottom: 28px;
  font-size: 14px;
}

footer {
  border-top: 1px solid var(--line);
  padding: 24px 0 34px;
  color: var(--muted);
  font-size: 13px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px 24px;
}

@media (max-width: 760px) {
  .nav-wrap {
    align-items: flex-start;
    padding: 16px 0;
  }

  .nav {
    gap: 12px;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .profile-card {
    position: static;
  }

  .page-links,
  .stats,
  .skills-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy p {
    font-size: 16px;
  }
}


.life-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.life-card {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: #fff;
}

.life-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
  background: var(--soft);
}

.life-card figcaption {
  padding: 14px 16px 16px;
}

.life-card figcaption span {
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 760px) {
  .life-grid {
    grid-template-columns: 1fr;
  }
}


.sidebar-pages {
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 7px;
  font-size: 14px;
}

.sidebar-pages .eyebrow {
  margin-bottom: 2px;
}

.sidebar-pages a {
  color: #4f5358;
}

.sidebar-pages a:hover {
  color: var(--text);
}

.research-highlights {
  margin-top: 46px;
}

.highlight-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.highlight-card {
  display: block;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: #fff;
  transition: transform .15s ease, border-color .15s ease;
}

.highlight-card:hover {
  text-decoration: none;
  transform: translateY(-2px);
  border-color: #cfd6df;
}

.highlight-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
  background: var(--soft);
}

.highlight-caption {
  padding: 14px 15px 16px;
}

.highlight-caption strong {
  display: block;
  margin-bottom: 4px;
  font-size: 16px;
}

.highlight-caption span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

@media (max-width: 900px) {
  .highlight-grid {
    grid-template-columns: 1fr;
  }
}

.presentation-year {
  margin: 8px 0 4px;
  color: var(--muted);
  font-size: 19px;
}

.presentation-item {
  padding: 16px 0;
  margin: 0;
  line-height: 1.25;
  border-bottom: 1px solid var(--line);
}

.presentation-item p {
  margin: 0;
}

.presentation-item:last-child {
  border-bottom: none;
}

.presentation-item>strong {
  font-size: 17px;
}

.presentation-item p {
  margin: 6px 0 0;
}

.highlight-intro {
  max-width: 760px;
  margin: 8px 0 24px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--muted);
}

.highlight-subtitle {
  margin-top: 64px;
  margin-bottom: 12px;
}

/* Research figures */
.research-figure {
  width: 100%;
  margin-top: 20px;
  text-align: center;
}

.research-figure img {
  display: block;
  width: auto;
  max-width: 100%;
  max-height: 420px;
  height: auto;
  margin: 0 auto;
  object-fit: contain;
}

.presentation-heading {
  display: flex;
  align-items: baseline;
  width: 100%;
  gap: 24px;
}

.presentation-heading>strong {
  flex: 0 1 auto;
}

.presentation-date {
  margin-left: auto;
  flex-shrink: 0;
  font-size: 15px;
  font-weight: 400;
  color: var(--muted);
  text-align: right;
  white-space: nowrap;
}

.baseball-photos {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.life-card .baseball-photos img {
  width: 100%;
  height: 100%;
  min-height: 0;
  aspect-ratio: auto;
  object-fit: cover;
}

.travel-photos {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-template-rows: repeat(2, minmax(0, 1fr));
  gap: 4px;
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.life-card .travel-photos img {
  width: 100%;
  height: 100%;
  min-height: 0;
  aspect-ratio: auto;
  object-fit: cover;
}