/* Layout: 스위스 타이포 그리드 — 반투명 상단 바, 큰 이름, 왼쪽 라벨 열 + 오른쪽 내용 열, 가는 선으로만 나눔. */
:root{
  --surface:#ffffff; --bg:#f5f5f7; --ink:#1d1d1f; --muted:#6e6e73; --faint:#a1a1a6; --rule:#d9d9de;
  --accent:#1f4a85; --accent-soft:#eaf0f8; --signal:#d8402a; --bar:rgba(255,255,255,.78);
  --f-sans:"Helvetica Neue",Helvetica,"Pretendard Variable",Pretendard,"Apple SD Gothic Neo","Noto Sans KR",Arial,sans-serif;
  --track-big:-.035em;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --surface:#0b0b0c; --bg:#161618; --ink:#f5f5f7; --muted:#a1a1a6; --faint:#6e6e73; --rule:#2c2c2f;
  --accent:#7fa8e8; --accent-soft:#17233a; --signal:#ff6a4d; --bar:rgba(11,11,12,.72); color-scheme:dark}}
:root[data-theme="dark"]{
  --surface:#0b0b0c; --bg:#161618; --ink:#f5f5f7; --muted:#a1a1a6; --faint:#6e6e73; --rule:#2c2c2f;
  --accent:#7fa8e8; --accent-soft:#17233a; --signal:#ff6a4d; --bar:rgba(11,11,12,.72); color-scheme:dark}
/* 기본 */
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
[hidden]{display:none!important}
img{max-width:100%}

/* 언어별 글꼴·자간 */
:root[lang="zh-Hans"]{--f-sans:"Helvetica Neue",Helvetica,"PingFang SC","Noto Sans SC","Microsoft YaHei",Arial,sans-serif;--track-big:-.01em}
:root[lang="zh-Hant"]{--f-sans:"Helvetica Neue",Helvetica,"PingFang TC","Noto Sans TC","Microsoft JhengHei",Arial,sans-serif;--track-big:-.01em}
:root[lang="ja"]{--f-sans:"Helvetica Neue",Helvetica,"Hiragino Sans","Noto Sans JP","Yu Gothic",Arial,sans-serif;--track-big:-.01em}
:root[lang="ko"]{--track-big:-.01em}
/* 한글: 낱말 중간에서 줄을 바꾸지 않고, 라틴용 좁은 자간을 풀고, 줄 간격을 넉넉히 */
body{word-break:keep-all;overflow-wrap:anywhere}
:root[lang^="zh"] body,:root[lang="ja"] body{word-break:normal}
:root[lang="ko"] body{line-height:1.72}
:root[lang="ko"] .name,:root[lang^="zh"] .name,:root[lang="ja"] .name{line-height:1.1;font-size:clamp(44px,8.4vw,94px);font-weight:600}
:root[lang="ko"] .dept,:root[lang="ko"] .pub .title{letter-spacing:-.01em}

body{margin:0;background:var(--surface);color:var(--ink);font-family:var(--f-sans);font-size:15px;line-height:1.6;
  -webkit-font-smoothing:antialiased;font-feature-settings:"tnum" 1}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--surface)}
.in{max-width:1120px;margin:0 auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}

/* 상단 바 */
.bar{position:sticky;top:env(safe-area-inset-top,0px);z-index:5;background:var(--bar);
  -webkit-backdrop-filter:saturate(180%) blur(20px);backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid var(--rule)}
.bar .in{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-block:10px}
.bar-name{font-weight:700;font-size:14px;letter-spacing:-.01em;display:flex;align-items:center;gap:8px;white-space:nowrap}
.bar-name i{width:8px;height:8px;background:var(--signal);display:inline-block}
.bar-r{display:flex;align-items:center;gap:8px;min-width:0}
.qr-btn{flex:none;display:grid;place-items:center;width:34px;height:30px;border:0;border-radius:8px;background:var(--bg);color:var(--ink);cursor:pointer;touch-action:manipulation}
.qr-btn:hover{color:var(--accent)}
.qrpop{position:fixed;inset:0;z-index:20;display:grid;place-items:center;padding:24px;background:rgba(0,0,0,.45);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}
.qrcard{background:#fff;color:#1d1d1f;border-radius:20px;padding:28px 28px 22px;display:grid;justify-items:center;gap:6px;width:min(340px,100%);text-align:center;box-shadow:0 20px 60px rgba(0,0,0,.25)}
.qrcard img{width:min(240px,70vw);height:auto;image-rendering:pixelated}
.qrcard strong{font-size:20px;font-weight:700;margin-top:10px}
.qr-url{font-size:13px;color:#6e6e73}
.qrcard p{margin:8px 0 10px;font-size:13px;color:#6e6e73;line-height:1.5}
.qrcard .btn.alt{width:100%;background:#f5f5f7;color:#1f4a85}
.l-short{display:none}
@media (max-width:600px){.l-full{display:none}.l-short{display:inline}.seg button{padding:5px 10px;min-width:34px}}
.seg{display:inline-flex;padding:2px;border-radius:9px;background:var(--bg);gap:2px;overflow-x:auto;scrollbar-width:none;max-width:100%}
.seg button{font:inherit;font-size:12.5px;font-weight:500;border:0;background:none;color:var(--muted);padding:5px 11px;border-radius:7px;cursor:pointer;white-space:nowrap;touch-action:manipulation;transition:background .2s,color .2s}
.seg button[aria-pressed="true"]{background:var(--surface);color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.12),0 0 0 .5px rgba(0,0,0,.04)}

/* 첫 화면 */
.hero{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:48px;align-items:end;padding-block:72px 48px}
@media (max-width:820px){.hero{grid-template-columns:minmax(0,1fr);gap:32px;padding-block:44px 32px}}
.eyebrow{margin:0 0 18px;font-size:13px;font-weight:500;color:var(--accent);letter-spacing:.01em}
.name{margin:0;font-size:clamp(52px,10vw,112px);font-weight:700;line-height:.95;letter-spacing:var(--track-big);text-wrap:balance}
.name-alt{margin:14px 0 0;font-size:clamp(18px,2.2vw,24px);font-weight:300;color:var(--muted);letter-spacing:-.01em}
.dept{margin:28px 0 0;font-size:17px;line-height:1.45;max-width:36em}
.dept b{font-weight:600}
@media (max-width:600px){
  .hero{padding-block:36px 28px;gap:28px}
  .eyebrow{margin-bottom:12px}
  .name{font-size:clamp(44px,13vw,60px)}
  :root[lang="ko"] .name,:root[lang^="zh"] .name,:root[lang="ja"] .name{font-size:clamp(40px,11.5vw,54px)}
  .name-alt{margin-top:8px;font-size:18px}
  .dept{margin-top:18px;font-size:16px}
  .side{gap:14px}
}
/* 연구 키워드: 격자로 줄 끝을 맞춤 (컴퓨터 3열, 휴대폰 2열), 칸마다 위에 가는 선 */
.themes{margin:24px 0 0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 20px;max-width:640px;font-size:13px;line-height:1.45;color:var(--muted)}
.themes span{border-top:1px solid var(--rule);padding:7px 0 9px}
@media (max-width:600px){.themes{margin-top:18px;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 16px}}
.side{display:grid;gap:18px}
.contact{margin:0;display:grid;gap:0;border-top:1px solid var(--ink)}
.contact div{display:grid;grid-template-columns:72px minmax(0,1fr);gap:8px;padding:9px 0;border-bottom:1px solid var(--rule);font-size:14px}
.contact dt{color:var(--muted);font-size:12px;padding-top:2px}
.contact dd{margin:0;min-width:0;overflow-wrap:anywhere}
.btns{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.btn{font:inherit;font-size:14px;font-weight:500;border:0;border-radius:980px;padding:11px 18px;cursor:pointer;touch-action:manipulation;background:var(--accent);color:var(--surface);transition:filter .2s;text-align:center;text-decoration:none}
.btn:hover{filter:brightness(1.08)}
.btn.alt{background:var(--bg);color:var(--accent)}
.mail{color:var(--accent);text-decoration:none}
.mail:hover{text-decoration:underline}

/* 숫자 띠 */
.band{background:var(--bg)}
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));padding-block:28px}
.stat{padding:0 20px;border-left:1px solid var(--rule)}
.stat:first-child{border-left:0;padding-left:0}
.stat b{display:block;font-size:clamp(34px,5vw,52px);font-weight:200;letter-spacing:-.03em;line-height:1}
.stat span{display:block;margin-top:8px;font-size:12px;color:var(--muted)}
@media (max-width:560px){.stats{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:24px}.stat:nth-child(3){border-left:0;padding-left:0}}

/* 탭 */
.tabs{display:flex;gap:28px;overflow-x:auto;scrollbar-width:none;border-bottom:1px solid var(--rule);margin-top:40px}
.tab{font:inherit;font-size:15px;font-weight:500;background:none;border:0;color:var(--faint);padding:14px 0;cursor:pointer;white-space:nowrap;position:relative;touch-action:manipulation;transition:color .2s}
.tab:hover{color:var(--muted)}
.tab[aria-selected="true"]{color:var(--ink)}
.tab[aria-selected="true"]::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--ink)}
.tab small{font-size:11px;font-weight:400;color:var(--faint);margin-left:5px;vertical-align:1px}
.qr-btn:focus-visible,.btn:focus-visible,.tab:focus-visible,.seg button:focus-visible,input:focus-visible,select:focus-visible,.link:focus-visible,.mail:focus-visible,.pdf:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* 내용: 왼쪽 라벨 열 + 오른쪽 내용 열 */
section{padding-block:40px 24px}
section h2{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.block{display:grid;grid-template-columns:200px minmax(0,1fr);gap:32px;padding-block:0 40px}
@media (max-width:720px){.block{grid-template-columns:minmax(0,1fr);gap:12px}}
.label{margin:0;font-size:13px;font-weight:700;letter-spacing:.01em;padding-top:14px}
.orig{font-size:12px;color:var(--muted);margin:6px 0 0;font-weight:400;line-height:1.5}
.rows{margin:0;padding:0;list-style:none;border-top:1px solid var(--ink)}
.row{display:grid;grid-template-columns:110px minmax(0,1fr);gap:20px;padding:14px 0;border-bottom:1px solid var(--rule)}
.rows.plain .row{grid-template-columns:minmax(0,1fr)}
@media (max-width:520px){.row{grid-template-columns:minmax(0,1fr);gap:2px}}
.when{font-size:13px;color:var(--muted);padding-top:2px}
.what b{font-weight:600}
.what .meta{display:block;color:var(--muted);font-size:14px;margin-top:2px}

/* 거르기 */
.pubbar{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:16px}
.search{flex:1 1 220px;min-width:0;font:inherit;font-size:14px;padding:8px 14px;border:0;border-radius:10px;background:var(--bg);color:var(--ink)}
.search::placeholder{color:var(--faint)}
select{font:inherit;font-size:13px;padding:7px 10px;border:0;border-radius:10px;background:var(--bg);color:var(--ink);max-width:100%}
.count{font-size:12px;color:var(--muted);margin:0 0 8px;display:flex;justify-content:space-between;align-items:baseline;gap:8px 16px;flex-wrap:wrap}
.export{font-size:12px}
.cite-sel{font-size:12px;color:var(--muted);display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.cite-sel select{font-size:12px;padding:6px 8px}

/* 논문 */
.pub{display:grid;grid-template-columns:56px minmax(0,1fr);gap:16px;padding:16px 0;border-bottom:1px solid var(--rule)}
.pub .no{font-size:22px;font-weight:200;color:var(--faint);line-height:1.1;letter-spacing:-.02em}
.pub .title{font-weight:600;font-size:16px;line-height:1.45;letter-spacing:-.005em}
.pub .venue{font-size:14px;color:var(--muted);margin-top:3px}
.pub .venue i{font-style:normal;color:var(--ink)}
.tags{display:flex;flex-wrap:wrap;gap:6px 12px;margin-top:8px;align-items:center}
.tag{font-size:12px;color:var(--muted)}
.tag.hot{color:var(--signal);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.tag.hot::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--signal)}
.link{background:none;border:0;padding:0;cursor:pointer;font:inherit;font-size:12px;color:var(--accent);text-decoration:none}
.link:hover{text-decoration:underline}
.doi{font-size:12px;color:var(--accent);text-decoration:none;overflow-wrap:anywhere;font-variant-numeric:tabular-nums}
.doi:hover{text-decoration:underline}
.pdf{font-size:12px;font-weight:600;color:var(--surface);background:var(--accent);border-radius:980px;padding:2px 10px;text-decoration:none}
.pdf:hover{filter:brightness(1.08)}
.empty{color:var(--muted);padding:24px 0}
.foot{border-top:1px solid var(--rule);margin-top:24px;padding-block:20px 48px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:12px;color:var(--faint)}
.toast{position:fixed;left:50%;bottom:calc(24px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--ink);color:var(--surface);padding:9px 18px;border-radius:980px;font-size:13px;opacity:0;transition:opacity .2s;pointer-events:none}
.toast.on{opacity:1}
@media (prefers-reduced-motion:reduce){.toast,.seg button,.tab,.btn{transition:none}}

/* 인쇄(=PDF 저장): 고른 언어로 모든 섹션을 한 문서로 */
@media print{
  :root{--surface:#fff;--bg:#fff;--ink:#000;--muted:#444;--faint:#777;--rule:#ccc;--accent:#000;--signal:#000}
  body{font-size:10pt}
  body::before,.bar,.qrpop,.btns,.tabs,.pubbar,.count,.band,.link,.pdf,.foot{display:none!important}
  .in{padding:0;max-width:none}
  .hero{padding:0 0 18pt;grid-template-columns:minmax(0,1fr) 200px;gap:24pt}
  .name{font-size:40pt}
  section[hidden]{display:block!important}
  section{padding:0 0 10pt}
  section h2{position:static;width:auto;height:auto;clip:auto;font-size:14pt;margin:0 0 8pt;border-top:1.5pt solid #000;padding-top:6pt}
  .block{grid-template-columns:110pt minmax(0,1fr);gap:14pt;padding-bottom:12pt}
  .row,.pub{break-inside:avoid}
}