@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Inter:wght@400;500;600;700;800&display=swap');
:root{--bg:#fafbfc;--paper:#fff;--ink:#27313b;--muted:#6c7987;--soft:#909ca7;--line:#e8edf1;--accent:#1682a6;--accent-dark:#0e6483;--pill:#eef6f9}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:'DM Sans','Inter',Arial,sans-serif;font-size:15px;line-height:1.75;-webkit-font-smoothing:antialiased}a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-dark)}.topbar{background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10;backdrop-filter:blur(14px)}.topbar-inner{max-width:1150px;margin:auto;padding:0 38px;height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{font-family:Inter,sans-serif;color:#27313b;font-size:19px;font-weight:800;letter-spacing:-.6px;white-space:nowrap}.brand-dot{color:var(--accent)}nav{display:flex;gap:31px;align-items:center}nav a{color:#64717e;font-size:13px;font-weight:600;transition:color .15s}nav a:hover{color:var(--accent)}.layout{max-width:1150px;margin:auto;padding:0 38px;display:grid;grid-template-columns:226px minmax(0,1fr);gap:75px}.sidebar{padding-top:64px;position:sticky;top:76px;align-self:start}.portrait{display:block;width:176px;height:206px;object-fit:cover;object-position:center 35%;border-radius:12px;border:5px solid white;box-shadow:0 8px 28px rgba(32,48,62,.11)}.sidebar h1{font-family:Inter,sans-serif;font-size:21px;letter-spacing:-.6px;line-height:1.4;margin:22px 0 8px;font-weight:750}.korean{display:block;font-size:13px;color:var(--muted);font-weight:500;letter-spacing:0;margin-top:1px}.role{font-size:13px;font-weight:600;color:#485561;margin:12px 0 5px}.affiliation{font-size:12.5px;color:var(--muted);line-height:1.6;margin:0}.side-divider{width:175px;height:1px;background:var(--line);margin:25px 0 19px}.side-link{display:flex;gap:13px;align-items:center;color:#596774;font-size:13px;font-weight:600;margin:13px 0}.side-link span{width:17px;color:var(--accent);font-size:17px;text-align:center}.sidebar-note{margin-top:31px;font-size:11px;line-height:1.6;color:#a2abb3;max-width:170px}main{min-width:0;padding-top:61px}.section{scroll-margin-top:108px;padding-bottom:52px;margin-bottom:48px;border-bottom:1px solid var(--line)}.section-kicker{font-family:Inter,sans-serif;color:var(--accent);font-weight:750;font-size:10px;letter-spacing:2px;margin-bottom:11px}.about h2{font-family:Inter,sans-serif;font-size:clamp(30px,3.3vw,43px);line-height:1.22;letter-spacing:-1.7px;margin:0 0 26px;font-weight:750}.about h2 span{color:var(--accent)}.about p{font-size:16px;line-height:1.88;color:#4e5b66;margin:0 0 16px;max-width:700px}.about strong{font-weight:700;color:#34424e}.focus-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:28px}.focus-row span{font-size:11px;font-weight:600;background:var(--pill);color:#327b95;border:1px solid #dcecf1;border-radius:6px;padding:5px 10px}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:10px;margin-bottom:23px}.section h2{font-family:Inter,sans-serif;font-size:25px;letter-spacing:-.75px;line-height:1.3;font-weight:750;margin:0}.research-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}.research-card{border:1px solid var(--line);background:#fff;border-radius:10px;padding:19px 17px 18px;box-shadow:0 3px 14px rgba(27,49,67,.025)}.research-index{font-size:11px;font-weight:750;color:var(--accent);letter-spacing:1px}.research-card h3{font-family:Inter,sans-serif;font-size:14px;line-height:1.45;letter-spacing:-.2px;font-weight:700;margin:9px 0 9px}.research-card p{font-size:12px;line-height:1.75;color:var(--muted);margin:0}.news-list{border-top:1px solid var(--line)}.news-item{display:grid;grid-template-columns:78px 1fr;gap:17px;border-bottom:1px solid var(--line);padding:15px 2px}.news-item time{font-size:12px;font-weight:700;color:#73828f}.news-item p{margin:0;color:#4e5b66;font-size:13px;line-height:1.8}.count{color:#8a98a4;font-size:12px;font-weight:600}.pub-list{border-top:1px solid var(--line)}.publication{display:grid;grid-template-columns:100px minmax(0,1fr);gap:22px;padding:24px 0;border-bottom:1px solid var(--line)}.pub-meta{display:flex;align-items:flex-start;flex-direction:column;gap:9px}.year{color:#85939e;font-size:12px;font-weight:700}.status{font-size:9px;font-weight:750;letter-spacing:.6px;padding:4px 7px;border-radius:4px;line-height:1.4}.published{background:#e9f5ee;color:#32835b}.preprint{background:#eaf2f9;color:#417d9d}.pub-body h3{font-family:Inter,sans-serif;font-size:15px;line-height:1.53;font-weight:700;letter-spacing:-.25px;margin:0 0 6px;color:#283742}.pub-venue{font-size:12px;color:var(--accent);font-weight:600;margin:0 0 6px}.pub-desc{font-size:12px;color:var(--muted);line-height:1.75;margin:0 0 11px}.pub-links{display:flex;gap:8px}.pub-links a{border:1px solid #d7e5eb;background:white;color:var(--accent-dark);font-size:11px;font-weight:700;padding:4px 11px;border-radius:5px;line-height:1.6}.pub-links a:hover{background:var(--pill)}.timeline{border-left:2px solid #dbe8ed;margin-left:5px;padding-left:23px}.timeline-item{position:relative;display:grid;grid-template-columns:135px 1fr;gap:12px;padding:2px 0 27px}.timeline-item:before{content:'';position:absolute;width:10px;height:10px;border-radius:50%;background:var(--accent);border:3px solid var(--bg);left:-31px;top:7px}.timeline-date{color:#82909b;font-size:11px;font-weight:700;padding-top:3px}.timeline-item h3{font-family:Inter,sans-serif;font-size:14px;font-weight:700;margin:0 0 3px}.timeline-place{color:var(--accent);font-size:12px;font-weight:600;margin:0 0 5px!important}.timeline-item p{font-size:12px;line-height:1.75;color:var(--muted);margin:0}.skills{background:#f1f6f8;padding:16px 19px;border-radius:8px;margin-top:4px}.skills span{color:#668b9b;font-size:10px;font-weight:800;letter-spacing:1px}.skills p{margin:5px 0 0;font-size:12px;color:#566875}.contact-section p{font-size:14px;color:var(--muted);margin:13px 0 22px}.email-button{display:inline-flex;align-items:center;gap:24px;padding:10px 17px;background:var(--accent);color:#fff;border-radius:6px;font-size:13px;font-weight:700}.email-button:hover{color:white;background:var(--accent-dark)}footer{display:flex;justify-content:space-between;gap:12px;padding:0 0 35px;color:#a1acb5;font-size:11px}
@media(max-width:900px){.layout{gap:35px;grid-template-columns:185px minmax(0,1fr);padding:0 26px}.topbar-inner{padding:0 26px}.portrait{width:156px;height:184px}.research-grid{grid-template-columns:1fr}.research-card{padding:14px 16px}.timeline-item{grid-template-columns:1fr;gap:2px}}@media(max-width:650px){.topbar-inner{height:auto;min-height:68px;padding:14px 20px;flex-wrap:wrap}.brand{font-size:18px}nav{width:100%;gap:16px;overflow-x:auto;padding-bottom:2px}nav a{font-size:12px;white-space:nowrap}.layout{display:block;padding:0 22px}.sidebar{position:static;padding-top:32px;display:grid;grid-template-columns:115px 1fr;column-gap:20px;align-items:start}.portrait{grid-row:1/5;width:115px;height:142px;border-width:3px}.sidebar h1{margin:0 0 5px;font-size:19px}.role{margin:0 0 5px;font-size:12px}.affiliation{font-size:11px}.side-divider,.sidebar-note{display:none}.side-link{display:inline-flex;margin:9px 12px 0 0;font-size:11px;gap:5px}.side-link span{font-size:14px;width:auto}main{padding-top:39px}.section{padding-bottom:37px;margin-bottom:36px}.about h2{font-size:31px;letter-spacing:-1.2px}.about p{font-size:14px}.publication{grid-template-columns:1fr;gap:7px;padding:20px 0}.pub-meta{flex-direction:row;align-items:center}.timeline-item{padding-bottom:22px}footer{flex-direction:column}}

/* Contact links — consistent with the rest of the academic theme */
.contact-list{border-top:1px solid var(--line);max-width:620px}
.contact-item{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 2px;border-bottom:1px solid var(--line)}
.contact-info{display:flex;flex-direction:column;gap:2px;min-width:0}
.contact-label{font-size:11px;font-weight:700;color:var(--muted);letter-spacing:.2px}
.contact-info a{font-size:14px;font-weight:600;overflow-wrap:anywhere}
.copy-button{cursor:pointer;flex-shrink:0;border:1px solid #d7e5eb;background:#fff;color:var(--accent-dark);font:600 12px 'DM Sans',sans-serif;border-radius:6px;padding:8px 12px}
.copy-button:hover,.copy-button:focus-visible{background:var(--pill)}
.contact-hint{font-size:12px!important;color:var(--muted);margin-top:12px!important}
@media(max-width:650px){.contact-item{gap:8px}.contact-info a{font-size:13px}.copy-button{padding:7px 9px;font-size:11px}}