:root{
  --ink:#111418; --ink-2:#3D4350; --muted:#5A6070; --line:#E3E5EA; --bg:#FFFFFF; --bg-soft:#F6F7F9;
  --accent:#1F4FD1; --accent-dark:#163A9C;
  --serif:'Noto Serif KR',serif; --sans:'Noto Sans KR',sans-serif; --mono:'IBM Plex Mono',monospace;
  --wrap:1400px; --gutter:clamp(16px,4vw,48px); --section:clamp(48px,6vw,72px);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}
@media (min-width:1500px){body{zoom:1.1}}
@media (min-width:1800px){body{zoom:1.25}}
@media (min-width:2200px){body{zoom:1.45}}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent)} a:hover{color:var(--accent-dark)}
.wrap{max-width:var(--wrap);margin:0 auto;padding-left:var(--gutter);padding-right:var(--gutter)}
.section{padding-top:var(--section);padding-bottom:var(--section)}
.section.soft{background:var(--bg-soft)}
.section + .section:not(.soft):not(.dark){padding-top:0}
.section.soft + .section,.section.dark + .section{padding-top:var(--section)}
.eyebrow{margin:0 0 16px;font-family:var(--mono);font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}
.h2{margin:0;font-family:var(--serif);font-weight:700;font-size:clamp(28px,3vw,40px);line-height:1.25}
.h2.ko{font-family:var(--sans);font-weight:700;letter-spacing:-.02em}
.h2-row{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:16px;margin-bottom:32px}
.more{font-size:15px;font-weight:500;text-decoration:none}
.mono{font-family:var(--mono)}
.muted{color:var(--muted)}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:saturate(1.2) blur(6px);border-bottom:1px solid var(--line)}
.site-header .bar{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:72px}
.brand{display:flex;align-items:center;gap:14px;text-decoration:none;color:var(--ink)}
.brand img{height:34px;width:auto}
.brand .sep{width:1px;height:28px;background:var(--line)}
.brand .name{display:flex;flex-direction:column;line-height:1.15}
.brand .name b{font-family:var(--serif);font-size:22px;letter-spacing:.02em}
.brand .name span{font-size:12px;color:var(--muted)}
.nav{display:flex;gap:4px 28px;font-family:var(--mono);font-size:14px;letter-spacing:.08em}
.nav .item{position:relative}
.nav .top{display:inline-flex;align-items:center;gap:6px;min-height:44px;color:var(--ink);text-decoration:none}
.nav .top[aria-current="page"]{color:var(--accent)}
.nav .sub{display:none;position:absolute;top:100%;left:-16px;min-width:210px;flex-direction:column;padding:8px;background:#fff;border:1px solid var(--line);box-shadow:0 8px 24px rgba(17,20,24,.08);font-family:var(--sans);letter-spacing:0;font-size:15px}
.nav .item:last-child .sub{left:auto;right:-16px}
.nav .item:hover .sub,.nav .item:focus-within .sub{display:flex}
.nav .sub a{padding:10px 12px;color:var(--ink);text-decoration:none}
.nav .sub a:hover{background:#F2F4F7}
.menu-btn{display:none;min-width:44px;min-height:44px;border:1px solid var(--line);background:#fff;border-radius:4px;font:inherit;cursor:pointer}
@media (max-width:980px){
  .menu-btn{display:inline-flex;align-items:center;justify-content:center}
  .nav{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;gap:0;padding:8px var(--gutter) 20px;background:#fff;border-bottom:1px solid var(--line);max-height:calc(100vh - 72px);overflow-y:auto}
  .nav.open{display:flex}
  .nav .sub{display:flex;position:static;border:0;box-shadow:none;padding:0 0 8px 12px;min-width:0}
  .nav .top svg{display:none}
}

/* page head */
.page-head{background:var(--bg-soft);border-bottom:1px solid var(--line)}
.page-head .wrap{padding-top:clamp(40px,6vw,72px);padding-bottom:clamp(32px,4vw,48px)}
.page-head h1{margin:0;font-family:var(--serif);font-size:clamp(32px,4vw,52px);line-height:1.15}
.page-head p{margin:12px 0 0;color:var(--ink-2);max-width:760px}
.crumb{font-family:var(--mono);font-size:13px;letter-spacing:.08em;color:var(--accent);margin:0 0 12px;text-transform:uppercase}

/* hero */
.hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:clamp(32px,4vw,64px);align-items:center;padding-top:clamp(32px,5vw,64px);padding-bottom:clamp(40px,5vw,64px)}
.hero .text{min-width:0}
@media (max-width:980px){.hero{grid-template-columns:1fr}}
.hero h1{margin:0;font-family:var(--serif);font-weight:700;font-size:clamp(28px,3.9vw,56px);line-height:1.15;letter-spacing:-.01em}
.hero h1 span{display:block}
.hero .en{margin:24px 0 0;max-width:620px;font-size:20px;color:var(--ink-2);font-style:italic;font-family:var(--serif)}
.hero .ko{margin:20px 0 0;max-width:600px;font-size:18px;line-height:1.7;color:#23272F}
.hero .aff{margin:16px 0 0;font-size:16px;color:var(--muted)}
.hero figure{min-width:0;margin:0}

/* research cards */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:40px}
@media (max-width:860px){.grid-3{grid-template-columns:1fr;gap:36px}}
.topic{display:flex;flex-direction:column;gap:14px;text-decoration:none;color:inherit}
.topic .ph{aspect-ratio:16/10;background:#fff;border:1px solid var(--line);overflow:hidden;padding:8px}
.topic .ph img{width:100%;height:100%;object-fit:contain;transition:transform .4s}
.topic:hover .ph img{transform:scale(1.03)}
.topic h3{margin:0;font-size:22px}
.topic p{margin:0;color:var(--ink-2)}
.topic .num{font-family:var(--mono);font-size:13px;color:var(--accent)}

/* publication slider */
.marquee{overflow:hidden}
.track{display:flex;gap:32px;width:max-content;animation:marquee 120s linear infinite}
.track:hover{animation-play-state:paused}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(calc(-50% - 16px))}}
.pcard{flex:0 0 min(260px,70vw);display:flex;flex-direction:column;gap:12px;text-decoration:none;color:var(--ink)}
.pcard .ph{position:relative;aspect-ratio:3/4;background:var(--bg-soft);border:1px solid var(--line);overflow:hidden;display:flex;align-items:center;justify-content:center}
.pcard .ph img{width:100%;height:100%;object-fit:cover}
.pcard .ph .jn{font-family:var(--serif);font-style:italic;font-weight:700;font-size:clamp(22px,2vw,30px);color:#fff;text-align:center;padding:24px;line-height:1.2}
.pcard .badge{align-self:flex-start;margin-top:-4px;padding:1px 8px;font-family:var(--mono);font-style:normal;font-size:11px;letter-spacing:.04em;border:1px solid var(--accent);color:var(--accent)}
.pcard .meta{display:flex;justify-content:space-between;align-items:baseline;gap:12px}
.pcard .meta b{font-family:var(--serif);font-style:italic;font-size:18px}
.pcard .meta span{font-family:var(--mono);font-size:13px;color:var(--muted)}
.pcard .t{font-size:15px;line-height:1.5}
.pcard:hover .t{text-decoration:underline}
@media (prefers-reduced-motion:reduce){.track{animation:none}.marquee{overflow-x:auto}}

/* news list (home) */
.news-row{display:flex;flex-wrap:wrap;gap:56px}
.news-row .list{flex:999 1 520px;min-width:0}
.news-row .media{flex:1 1 340px;min-width:0;display:flex;flex-direction:column;gap:12px}
.nitem{display:flex;gap:24px;padding:16px 0;border-top:1px solid var(--line);text-decoration:none;color:var(--ink)}
.nitem:last-child{border-bottom:1px solid var(--line)}
.nitem .d{flex:0 0 80px;font-family:var(--mono);font-size:14px;color:var(--muted)}
a.nitem:hover span:last-child{text-decoration:underline}
.video{position:relative;aspect-ratio:16/9;background:#000}
.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}

/* news page */
.news-card{display:grid;grid-template-columns:200px 1fr;gap:28px;padding:28px 0;border-top:1px solid var(--line)}
.news-card:last-child{border-bottom:1px solid var(--line)}
.news-card .ph{aspect-ratio:3/4;background:var(--bg-soft);border:1px solid var(--line);overflow:hidden}
.news-card .ph img{width:100%;height:100%;object-fit:cover}
.news-card .ph:has(.ph-label){display:flex;align-items:center;justify-content:center;background:radial-gradient(120% 90% at 22% 12%,#2a3f7a 0%,#121b3a 50%,#080c1a 100%);border:0}
.news-card .ph-label{font-family:var(--serif);font-style:italic;font-weight:700;font-size:26px;color:#f3e3c4}
.news-card h3{margin:4px 0 8px;font-size:21px;font-weight:500}
.news-card h3 b,.nitem b{font-weight:700}
.news-card p{margin:0;color:var(--ink-2)}
.news-card ul{margin:12px 0 0;padding:0;list-style:none;display:flex;flex-direction:column;gap:6px;font-size:15px}
@media (max-width:640px){.news-card{grid-template-columns:110px 1fr;gap:16px}}

/* media grid */
.vgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:32px}
.vgrid .ch{margin:12px 0 2px;font-family:var(--mono);font-size:13px;color:var(--accent)}
.vgrid .vt{margin:0;font-size:16px}

/* people */
.people{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:32px 24px}
.person .ph{aspect-ratio:4/5;background:var(--bg-soft);overflow:hidden;border:1px solid var(--line);display:flex;align-items:center;justify-content:center}
.person .ph img{width:100%;height:100%;object-fit:cover;object-position:center top}
.person .ph .ini{font-family:var(--serif);font-size:40px;color:var(--muted)}
.person h3{margin:14px 0 0;font-size:19px}
.person h3 small{font-weight:400;color:var(--muted);font-size:14px;margin-left:6px}
.person .course{margin:2px 0 0;font-family:var(--mono);font-size:13px;color:var(--accent)}
.person ul{margin:10px 0 0;padding:0;list-style:none;font-size:14px;color:var(--ink-2)}
.person ul li::before{content:"· "}
.person .mail{display:inline-block;margin-top:8px;font-size:14px;word-break:break-all}

/* professor */
.prof{display:flex;flex-wrap:wrap;gap:56px;align-items:flex-start}
.prof .photo{flex:0 1 280px;min-width:0}
.prof .photo img{width:100%;border:1px solid var(--line)}
.prof .info{flex:999 1 520px;min-width:0}
.prof .info h2{margin:0;font-family:var(--serif);font-size:clamp(30px,3.6vw,44px)}
.prof .info h2 small{font-size:.5em;font-weight:500;color:var(--muted);margin-left:10px}
.prof .role{margin:6px 0 20px;color:var(--ink-2)}
.kv{display:grid;grid-template-columns:90px 1fr;gap:6px 16px;font-size:15px}
.kv dt{font-family:var(--mono);color:var(--muted);font-size:13px;padding-top:2px}
.kv dd{margin:0}
.cv{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:40px 56px;margin-top:56px}
.cv h3{margin:0 0 14px;font-family:var(--serif);font-size:22px;padding-bottom:10px;border-bottom:1px solid var(--ink)}
.cv ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:10px;font-size:15px}
.cv li{display:grid;grid-template-columns:96px 1fr;gap:12px}
.cv li .y{font-family:var(--mono);color:var(--muted);font-size:13px;padding-top:2px}

/* publications */
.filters{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 32px}
.filters a{display:inline-flex;align-items:center;min-height:40px;padding:0 16px;border:1px solid var(--line);border-radius:999px;color:var(--ink);text-decoration:none;font-family:var(--mono);font-size:14px}
.filters a:hover{border-color:var(--ink)}
.year{display:grid;grid-template-columns:120px 1fr;gap:24px;padding:28px 0;border-top:1px solid var(--ink)}
.year h2{margin:0;font-family:var(--serif);font-size:30px;scroll-margin-top:96px}
.year ol{margin:0;padding:0;list-style:none;display:flex;flex-direction:column}
.pub{display:grid;grid-template-columns:44px 1fr;gap:12px;padding:16px 0;border-bottom:1px solid var(--line)}
.pub:last-child{border-bottom:0}
.pub .n{font-family:var(--mono);font-size:13px;color:var(--muted);padding-top:3px}
.pub .tt{margin:0;font-size:16.5px;font-weight:500;line-height:1.45}
.pub .tt a{color:var(--ink);text-decoration:none}
.pub .tt a:hover{color:var(--accent);text-decoration:underline}
.pub .au{margin:6px 0 0;font-size:14px;color:var(--ink-2)}
.pub .au b{color:var(--ink)}
.pub .vn{margin:4px 0 0;font-size:14px;font-style:italic;color:var(--accent-dark)}
.pub .tag{display:inline-block;margin-left:8px;padding:0 6px;font-family:var(--mono);font-style:normal;font-size:11px;border:1px solid var(--accent);color:var(--accent);vertical-align:2px}
.pub .press{margin:8px 0 0;padding:0;list-style:none;font-size:13.5px;display:flex;flex-direction:column;gap:2px}
@media (max-width:720px){.year{grid-template-columns:1fr;gap:8px}}

/* research page */
.rblock{display:flex;flex-direction:column;gap:20px;padding:40px 0;border-top:1px solid var(--line);scroll-margin-top:90px}
.rblock:first-child{border-top:0;padding-top:0}
.rblock h2{margin:0;font-family:var(--serif);font-size:clamp(26px,3vw,36px)}
.rblock .lead{margin:0;max-width:860px;color:var(--ink-2)}
.rblock figure{margin:0;border:1px solid var(--line);background:#fff}
.rblock figure img{width:100%}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none}
.chips li{padding:4px 12px;border:1px solid var(--line);border-radius:999px;font-size:14px;background:#fff}

/* facilities / gallery */
.fgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:24px}
.fgrid figure{margin:0}
.fgrid img{width:100%;aspect-ratio:1/1;object-fit:cover;border:1px solid var(--line)}
.fgrid figcaption{margin-top:8px;font-size:15px}
.ggrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(360px,1fr));gap:28px}
.ggrid figure{margin:0}
.ggrid img{width:100%;aspect-ratio:16/9;object-fit:cover}
.ggrid figcaption{display:flex;justify-content:space-between;gap:12px;margin-top:10px;font-size:15px}
.ggrid figcaption span{font-family:var(--mono);font-size:13px;color:var(--muted)}
@media (max-width:420px){.ggrid{grid-template-columns:1fr}}
.sub-h{margin:56px 0 20px;font-family:var(--serif);font-size:26px}
.sub-h:first-child{margin-top:0}

/* contact & footer */
.recruit{display:flex;flex-wrap:wrap;gap:48px}
.recruit .l{flex:999 1 480px;min-width:0}
.recruit .r{flex:1 1 300px;min-width:0;font-size:15px;color:var(--ink-2)}
.btn{display:inline-flex;align-items:center;min-height:48px;padding:0 24px;background:var(--accent);color:#fff;text-decoration:none;font-weight:500}
.btn:hover{background:var(--accent-dark);color:#fff}
.map{aspect-ratio:16/9;border:1px solid var(--line);width:100%}
.site-footer{border-top:1px solid var(--ink);margin-top:0}
.site-footer .top{display:flex;flex-wrap:wrap;gap:32px;justify-content:space-between;align-items:center;padding-top:40px;padding-bottom:28px}
.site-footer .addr{font-size:14px;color:var(--ink-2)}
.site-footer .addr b{color:var(--ink)}
.partners{display:flex;flex-wrap:wrap;align-items:center;gap:28px}
.partners img{height:34px;width:auto;object-fit:contain;filter:grayscale(1);opacity:.75;transition:.2s}
.partners a:hover img{filter:none;opacity:1}
.site-footer .copy{padding-bottom:28px;font-size:13px;color:var(--muted)}
.cv.cv-in{margin-top:40px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
a.plain{color:inherit;text-decoration:none}
a.plain:hover{color:var(--accent);text-decoration:underline}
.news-card:first-child{border-top:0;padding-top:0}
.press-box{margin-top:8px;font-size:14px}
.press-box summary{cursor:pointer;color:var(--accent);font-family:var(--mono);font-size:13px;list-style:none;display:inline-flex;align-items:center;gap:6px;min-height:32px}
.press-box summary::-webkit-details-marker{display:none}
.press-box summary::before{content:"+";display:inline-block;width:14px}
.press-box[open] summary::before{content:"−"}
.press-box .press,.press-box ul{margin-top:4px}
.news-card ul a{color:var(--ink-2);text-decoration:none}
.news-card ul a:hover{color:var(--accent);text-decoration:underline}
.news-card ul a b{color:var(--ink);font-weight:700;margin-right:6px}
.pgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:48px 32px}
.pgrid .pcard{flex:none}
.pcard .ph img.fit-contain{object-fit:contain;background:#fff;padding:12px}
.pcard .ph img.fit-left{object-position:left center}
@media (max-width:700px){
  .pgrid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 16px}
  .pgrid .pcard .meta b{font-size:15px}
  .pgrid .pcard .t{font-size:13.5px}
  .pgrid .pcard .ph .jn{font-size:18px;padding:12px}
}
.alumni{display:flex;flex-direction:column;max-width:640px}
.alum{display:grid;grid-template-columns:minmax(180px,240px) 1fr;align-items:baseline;gap:4px 20px;padding:5px 0}
.alum h3{margin:0;font-size:17px}
.alum h3 small{font-weight:400;color:var(--muted);font-size:14px;margin-left:6px}
.alum .course{font-family:var(--mono);font-size:13px;color:var(--accent)}
.alum .note{font-size:14px;color:var(--ink-2)}
@media (max-width:700px){
  .alum{grid-template-columns:auto minmax(0,1fr);gap:0 10px;padding:4px 0}
  .alum h3{font-size:16px;white-space:nowrap}
  .alum h3 small{display:none}
  .alum .course{font-size:12px;white-space:nowrap}
  .alum .course:empty{display:none}
  .alum .note{font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
}
.alum .mail{font-size:14px;word-break:break-all}
.topic .ph{padding:0;border:0;border-radius:4px}
.topic .ph img{object-fit:cover}
@media (max-width:560px){
  .people{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 14px}
  .person h3{font-size:16px;margin-top:10px}
  .person h3 small{display:block;margin:2px 0 0;font-size:12.5px}
  .person ul{font-size:12.5px;margin-top:6px}
  .person .mail{font-size:12px}
  .members .sub-h{font-size:21px;margin:40px 0 16px}
}
.cv .wide{grid-column:1/-1}
.cv .act-h{margin:14px 0 4px;font-family:var(--mono);font-size:13px;font-weight:700;letter-spacing:.04em;color:var(--accent)}
.cv .act{margin:0;font-size:15px;line-height:1.75;color:var(--ink-2)}