:root{
  --text:#111111;
  --muted:#69717c;
  --line:#dfe5eb;
  --accent:#1769aa;
  --surface:#ffffff;
  --soft:#f5f8fb;
  --max:1160px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:74px}
body{
  margin:0;
  color:var(--text);
  background:var(--surface);
  font-family:"IBM Plex Sans",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.64;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
a[target="_blank"]::after{
  content:"↗";
  display:inline-block;
  margin-left:.26em;
  font-size:.8em;
  line-height:1;
  vertical-align:.08em;
  opacity:.65;
}
a[target="_blank"]:hover::after{opacity:1}
::selection{background:#dcecf9}
.container{width:min(calc(100% - 48px),var(--max));margin:0 auto}

.site-nav{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:100;
  min-height:62px;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid #e8edf2;
  box-shadow:0 1px 8px rgba(20,35,50,.035);
}
.nav-inner{min-height:62px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{
  color:#000;
  font-family:"IBM Plex Serif",Georgia,serif;
  font-size:20px;
  font-weight:600;
  letter-spacing:-.015em;
}
.brand:hover{text-decoration:none;color:var(--accent)}
.site-nav nav{display:flex;align-items:center;gap:25px}
.site-nav nav a{color:#000;font-size:13.5px;font-weight:500;letter-spacing:.005em}
.site-nav nav a:hover{color:var(--accent);text-decoration:none}

main{padding-top:62px}
.home-section{padding:44px 0;border-bottom:1px solid var(--line);background:#fff}
.home-section:nth-of-type(even){background:var(--soft)}
.section-grid{
  display:grid;
  grid-template-columns:225px minmax(0,1fr);
  gap:46px;
  align-items:start;
}
.section-heading h2{
  margin:0;
  color:#111;
  font-family:"IBM Plex Serif",Georgia,serif;
  font-size:29px;
  line-height:1.22;
  font-weight:600;
  letter-spacing:-.018em;
}
.section-heading::after{
  content:"";
  display:block;
  width:38px;
  height:2px;
  margin-top:13px;
  background:var(--accent);
}
.section-content{min-width:0}
.section-content>p:first-child{margin-top:0}

.about-section{padding-top:50px;padding-bottom:46px}
.about-grid{align-items:start}
.profile-column h1{
  margin:0 0 8px;
  font-family:"IBM Plex Serif",Georgia,serif;
  font-size:34px;
  line-height:1.16;
  font-weight:600;
  letter-spacing:-.025em;
}
.profile-role{margin:0;color:#111;font-size:16px;line-height:1.48}
.profile-meta{margin:8px 0 0;color:var(--muted);font-size:14px}
.profile-links{display:flex;gap:13px;flex-wrap:wrap;margin-top:17px}
.profile-links a{font-size:14px;font-weight:500}
.about-copy{max-width:760px}
.about-copy p{margin:0 0 13px;font-size:16.5px;line-height:1.68}
.about-copy p:last-child{margin-bottom:0}

.research-item,.paper-item{padding:0 0 26px;margin:0 0 26px;border-bottom:1px solid var(--line)}
.research-item:last-child,.paper-item:last-child{margin-bottom:0;border-bottom:0;padding-bottom:0}
.item-meta{margin-bottom:7px;color:var(--muted);font-size:13.5px;line-height:1.5}
.research-item h3,.paper-item h3{
  margin:0 0 8px;
  color:#111;
  font-size:21px;
  line-height:1.34;
  font-weight:600;
  letter-spacing:-.012em;
}
.research-item p,.paper-item p{
  margin:0 0 12px;
  color:#111;
  font-size:15.5px;
  line-height:1.64;
}
.item-links{display:flex;align-items:baseline;gap:0;flex-wrap:wrap;margin-top:10px}
.item-links a{
  display:inline;
  padding:0;
  border:0;
  border-radius:0;
  background:transparent;
  color:var(--accent);
  font-size:13px;
  font-weight:500;
  line-height:1.4;
  transition:color .12s ease;
}
.item-links a+a::before{
  content:"·";
  display:inline-block;
  margin:0 9px;
  color:var(--muted);
  text-decoration:none;
}
.item-links a:hover{
  background:transparent;
  color:var(--accent);
  border-color:transparent;
  text-decoration:underline;
}
.item-links a::after{opacity:.65}
.item-links a:hover::after{opacity:1}

/* Featured work uses clean rectangular academic cards with a subtle left rule. */
#research .section-content{display:grid;gap:14px}
#research .research-item,
#research .research-item:last-child{
  margin:0;
  padding:18px 20px 19px;
  border:1px solid #dde5ec;
  border-left:3px solid var(--accent);
  border-radius:1px;
  background:rgba(255,255,255,.94);
  box-shadow:0 1px 2px rgba(28,48,68,.03);
}
#research .item-meta{margin-bottom:8px;font-size:13px}
#research .research-item h3{margin:0 0 7px;font-size:21.5px;line-height:1.3;font-weight:600}
#research .research-item p{margin:0 0 13px;font-size:15.5px;line-height:1.6}
#research .item-links{margin-top:10px}

.subsection-title{
  margin:0 0 21px;
  font-family:"IBM Plex Serif",Georgia,serif;
  font-size:23px;
  line-height:1.28;
  font-weight:600;
  letter-spacing:-.012em;
}
.current-title{margin-top:40px;margin-bottom:5px}
.subsection-note{margin:0 0 24px;color:var(--muted);font-size:14px}
#papers .paper-item{max-width:none}
#papers .paper-item h3{font-size:20.5px}
.compact-item{padding-bottom:24px;margin-bottom:24px}
.compact-item h3{font-size:20px;line-height:1.35}
.compact-item p{font-size:15.5px}

.experience-list{border-top:1px solid var(--line)}
.experience-item{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:24px;
  align-items:start;
  padding:17px 0;
  border-bottom:1px solid var(--line);
}
.experience-item h3{margin:0;font-size:18px;line-height:1.4;font-weight:600;letter-spacing:-.008em}
.experience-item p{margin:3px 0 0;color:#111;font-size:14px;line-height:1.5}
.experience-item .role{color:#111;font-weight:500}
.experience-item>span{padding-top:2px;color:var(--muted);font-size:13px;white-space:nowrap}

.contact-section{display:none}
footer{padding:20px 0;background:#fff;color:#777f88;font-size:12px}
.footer-inner{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}

@media(min-width:928px){
  .container{width:min(calc(100% - 56px),1160px)}
  .about-copy p{font-size:16.5px}
  .section-heading h2{font-size:30px}
  .profile-column h1{font-size:35px}

  /* Optical alignment: serif heading sits a few pixels higher beside bio copy. */
  .about-grid .profile-column{transform:translateY(-5px)}

  /* Keep the intro and Selected Research visually connected. */
  .home-section.about-section{padding-bottom:12px!important}
  #research{padding-top:18px!important}

  /* Keep the existing description copy intact while preserving a compact
     two-line rhythm for normal desktop widths. */
  #research .research-item p,
  #papers .paper-item p{
    font-size:14.5px;
    line-height:1.6;
  }
}

@media(max-width:820px){
  .site-nav{position:relative}
  .nav-inner{padding:12px 0;align-items:flex-start}
  .site-nav nav{gap:14px;flex-wrap:wrap;justify-content:flex-end}
  main{padding-top:0}
  html{scroll-padding-top:16px}
  .section-grid{grid-template-columns:1fr;gap:22px}
  .section-heading h2{font-size:28px}
  .section-heading::after{margin-top:10px}
  .about-grid{gap:27px}
}

@media(max-width:560px){
  .container{width:calc(100% - 32px)}
  .nav-inner{display:block}
  .brand{display:inline-block;margin-bottom:10px}
  .site-nav nav{justify-content:flex-start;gap:12px 16px}
  .site-nav nav a{font-size:12.5px}
  .home-section{padding:34px 0}
  .about-section{padding-top:38px}
  .profile-column h1{font-size:31px}
  .profile-role{font-size:15px}
  .profile-meta,.profile-links a{font-size:13.5px}
  .section-heading h2{font-size:26px}
  .research-item h3,.paper-item h3,#papers .paper-item h3{font-size:19px}
  .research-item p,.paper-item p,.compact-item p{font-size:15px}
  #research .research-item,#research .research-item:last-child{padding:17px 17px 18px}
  #research .research-item h3{font-size:20px}
  #research .research-item p{font-size:15px}
  .subsection-title{font-size:22px}
  .compact-item h3{font-size:19px}
  .experience-item{grid-template-columns:1fr;gap:5px}
  .experience-item>span{padding-top:0}
  .footer-inner{display:block}
  .footer-inner span{display:block;margin-bottom:4px}
}