:root {
  --red: #aa1024;
  --red-dark: #800d1e;
  --red-soft: #fff4f4;
  --ink: #26313a;
  --muted: #69747d;
  --line: #e7e8e9;
  --paper: #ffffff;
  --pale: #f8f8f8;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif; font-size: 15px; line-height: 1.8; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
.container { width: min(1180px, calc(100% - 56px)); margin: 0 auto; }
.site-header { background: var(--red); color: #fff; }
.header-inner { min-height: 0; display: flex; justify-content: flex-end; align-items: center; gap: 30px; }
.site-brand { display: flex; align-items: baseline; gap: 15px; white-space: nowrap; }
.site-brand strong { font-size: 25px; font-weight: 700; letter-spacing: .08em; }
.site-brand span { padding-left: 15px; border-left: 1px solid rgba(255,255,255,.55); font-size: 16px; letter-spacing: .06em; }
.main-nav { display: flex; align-items: center; gap: 36px; font-size: 14px; white-space: nowrap; }
.main-nav a { padding: 16px 0; border-top: 2px solid transparent; border-bottom: 2px solid transparent; transition: border-bottom-color .2s, opacity .2s; }
.main-nav a:hover, .main-nav a:focus-visible { border-bottom-color: #fff; opacity: .9; }
.hero { color: #fff; background: linear-gradient(120deg, #6d0b19 0%, #8f1323 58%, #a32330 100%); }
.hero-inner { min-height: 394px; display: flex; align-items: center; gap: 58px; padding-top: 54px; padding-bottom: 54px; }
.portrait { flex: 0 0 184px; height: 184px; overflow: hidden; border: 6px solid rgba(255,255,255,.94); border-radius: 50%; box-shadow: 0 6px 24px rgba(34,0,8,.22); background: #d8e8f4; }
.portrait img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: center 24%; }
.hero-copy { max-width: 800px; }
.hero-unit { margin: 0 0 9px; color: rgba(255,255,255,.78); font-size: 14px; letter-spacing: .09em; }
.hero-copy h1 { display: flex; align-items: baseline; gap: 17px; margin: 0 0 15px; font-size: clamp(30px, 3.4vw, 42px); line-height: 1.3; font-weight: 600; letter-spacing: .1em; }
.hero-copy h1 span { font-size: 17px; font-weight: 400; letter-spacing: 0; }
.hero-intro { max-width: 760px; margin: 0 0 21px; font-size: 16px; line-height: 2; }
.hero-contact { display: inline-flex; align-items: center; gap: 12px; padding-bottom: 3px; border-bottom: 1px solid rgba(255,255,255,.65); font-size: 14px; }
.hero-contact:hover { border-color: white; }
.overview { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; padding-top: 43px; padding-bottom: 46px; }
.overview-card { min-height: 235px; position: relative; display: flex; flex-direction: column; padding: 26px 24px 20px; background: #f7f6f4; border-top: 3px solid var(--red); }
.overview-card h2 { margin: 0 0 17px; font-size: 19px; line-height: 1.4; font-weight: 600; }
.overview-card p, .overview-card li { margin: 0; color: #52606b; font-size: 14px; }
.overview-card ul { display: grid; gap: 6px; padding-left: 17px; margin: 0; }
.overview-card .card-emphasis { margin-bottom: 8px; color: var(--ink); font-weight: 600; }
.overview-card a { display: flex; justify-content: space-between; align-items: center; margin-top: auto; padding-top: 18px; color: var(--red); font-size: 13px; font-weight: 600; }
.overview-card a span { font-size: 18px; }
.education-list { display: grid; gap: 12px; margin: 0; }
.education-list dt { color: var(--muted); font-size: 12px; }
.education-list dd { margin: 2px 0 0; color: var(--ink); font-size: 14px; }
.section { padding: 77px 0; }
.profile-section { border-top: 1px solid var(--line); }
.profile-grid { display: grid; grid-template-columns: 250px 1fr; gap: 85px; }
.section-label { margin: 0 0 5px; color: var(--red); font-size: 12px; font-weight: 700; letter-spacing: .14em; }
.section-title { margin: 0; font-size: 28px; font-weight: 600; letter-spacing: .04em; line-height: 1.5; }
.section-title::after { display: block; content: ""; width: 37px; height: 3px; margin-top: 16px; background: var(--red); }
.profile-body p { max-width: 780px; margin: 0 0 16px; color: #4d5a64; }
.profile-body .profile-keywords { display: flex; flex-wrap: wrap; gap: 5px 16px; margin-top: 22px; font-size: 14px; }
.profile-keywords strong { color: var(--red); font-weight: 600; }
.profile-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin: 30px 0 0; padding: 20px 0 0; border-top: 1px solid var(--line); }
.profile-facts div { min-width: 0; }
.profile-facts dt { margin-bottom: 4px; color: var(--muted); font-size: 12px; }
.profile-facts dd { margin: 0; font-size: 14px; font-weight: 600; }
.research-section { background: var(--pale); }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 30px; margin-bottom: 39px; }
.section-head > p { max-width: 430px; margin: 0; color: var(--muted); font-size: 14px; text-align: right; }
.research-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.research-item { min-height: 270px; display: flex; flex-direction: column; padding: 27px; border: 1px solid #ececec; background: #fff; }
.research-index { color: var(--red); font-size: 13px; font-weight: 600; }
.research-item h3 { margin: 14px 0 12px; font-size: 20px; font-weight: 600; }
.research-item p { margin: 0; color: #53616b; font-size: 14px; }
.research-tags { margin-top: auto; padding-top: 22px; color: var(--red); font-size: 12px; }
.publications-section { background: #fff; }
.publication-list { padding: 0; margin: 0; border-top: 1px solid var(--line); list-style: none; }
.publication-list li { display: grid; grid-template-columns: 76px minmax(0, 1fr) 86px; gap: 28px; align-items: start; padding: 27px 0; border-bottom: 1px solid var(--line); }
.publication-year { padding-top: 2px; color: var(--red); font-size: 15px; font-weight: 700; }
.publication-year small { display: block; margin-top: 3px; color: var(--muted); font-size: 11px; font-weight: 400; }
.publication-list h3 { margin: 0 0 8px; font-size: 17px; line-height: 1.5; font-weight: 600; }
.publication-list p { margin: 0; color: var(--muted); font-size: 13px; }
.publication-list p strong { color: var(--ink); font-weight: 700; }
.publication-list a { justify-self: end; padding-top: 3px; color: var(--red); font-size: 13px; white-space: nowrap; }
.publication-list a:hover { text-decoration: underline; }
.experience-section { background: var(--pale); }
.project-card { display: grid; grid-template-columns: 255px 1fr; gap: 52px; padding: 34px; border: 1px solid var(--line); border-left: 4px solid var(--red); background: #fff; }
.project-meta { display: flex; flex-direction: column; gap: 6px; color: var(--red); font-size: 13px; font-weight: 600; }
.project-meta span + span { color: var(--muted); font-weight: 400; }
.project-main h3 { margin: 0 0 12px; font-size: 20px; font-weight: 600; }
.project-main p { max-width: 750px; margin: 0 0 12px; color: #53616b; font-size: 14px; }
.project-main p:last-child { margin-bottom: 0; }
.project-result { color: var(--red) !important; }
.contact-section { padding: 50px 0; background: var(--red-soft); border-top: 1px solid #f0d7db; }
.contact-inner { display: flex; justify-content: space-between; align-items: center; gap: 30px; }
.contact-inner p:last-child { margin: 18px 0 0; color: #59646d; font-size: 14px; }
.contact-inner > a { color: var(--red); font-size: 18px; font-weight: 600; overflow-wrap: anywhere; }
.contact-inner > a:hover { text-decoration: underline; }
.site-footer { padding: 22px 0; background: #f3f3f3; color: #7c858b; font-size: 12px; }
.site-footer .container { display: flex; justify-content: space-between; gap: 20px; }
@media (max-width: 980px) {
  .header-inner { align-items: flex-start; flex-direction: column; gap: 3px; padding: 0; }
  .main-nav { width: 100%; justify-content: space-between; gap: 16px; }
  .main-nav a { padding: 16px 0; }
  .overview { grid-template-columns: repeat(2, 1fr); }
  .overview-card { min-height: 210px; }
  .profile-grid { grid-template-columns: 180px 1fr; gap: 40px; }
  .research-grid { gap: 15px; }
  .research-item { padding: 20px; }
}
@media (max-width: 680px) {
  .container { width: min(100% - 32px, 1180px); }
  .site-brand strong { font-size: 21px; }
  .site-brand span { font-size: 13px; }
  .main-nav { overflow-x: auto; justify-content: flex-start; gap: 25px; scrollbar-width: none; }
  .main-nav::-webkit-scrollbar { display: none; }
  .main-nav a { flex: 0 0 auto; font-size: 13px; }
  .hero-inner { min-height: 0; align-items: flex-start; flex-direction: column; gap: 22px; padding-top: 38px; padding-bottom: 42px; }
  .portrait { flex: 0 0 auto; width: 128px; height: 128px; border-width: 4px; }
  .hero-copy h1 { gap: 12px; font-size: 31px; }
  .hero-copy h1 span { font-size: 15px; }
  .hero-intro { font-size: 14px; }
  .overview { gap: 12px; padding-top: 24px; padding-bottom: 32px; }
  .overview-card { min-height: 205px; padding: 18px; }
  .overview-card h2 { font-size: 17px; }
  .overview-card p, .overview-card li { font-size: 12px; }
  .section { padding: 58px 0; }
  .profile-grid { grid-template-columns: 1fr; gap: 26px; }
  .section-title { font-size: 24px; }
  .profile-facts { grid-template-columns: 1fr; gap: 12px; }
  .section-head { align-items: flex-start; flex-direction: column; gap: 23px; margin-bottom: 28px; }
  .section-head > p { text-align: left; }
  .research-grid { grid-template-columns: 1fr; }
  .research-item { min-height: 0; }
  .research-tags { padding-top: 16px; }
  .publication-list li { grid-template-columns: 55px minmax(0, 1fr); gap: 10px; padding: 23px 0; }
  .publication-list h3 { font-size: 15px; }
  .publication-list p { font-size: 12px; }
  .publication-list a { grid-column: 2; justify-self: start; }
  .project-card { grid-template-columns: 1fr; gap: 22px; padding: 24px; }
  .contact-inner { align-items: flex-start; flex-direction: column; }
  .contact-inner > a { font-size: 16px; }
  .site-footer .container { flex-direction: column; gap: 0; }
}