/* ==========================================================================
   DREAM Lab. — site styles
   브랜드 컬러는 아래 :root 변수만 바꾸면 사이트 전체에 반영됩니다.
   ========================================================================== */

:root {
  /* Brand — VI burgundy + champagne gold */
  --burgundy: #6f1a2d;         /* VI primary */
  --burgundy-deep: #4a1120;
  --wine: #2a0c14;             /* hero / footer (darkest burgundy) */
  --wine-2: #3d121d;
  --champagne: #c8ad7f;        /* champagne gold — accents on dark */
  --champagne-light: #e6d6b3;  /* text accents on dark */
  --champagne-pale: #f3ecdf;   /* tints on light */
  --champagne-ink: #7a5f31;    /* champagne tone readable on light backgrounds */
  --champagne-line: #e3d7c0;   /* hairlines */
  --champagne-grad: linear-gradient(135deg, #e3d0a6 0%, #c8ad7f 48%, #a98b58 100%);
  --ivory: #f8f5ef;            /* section background */
  --stone: #716760;            /* secondary text */

  /* Neutrals */
  --ink: #1f1a1b;
  --ink-soft: #4a4244;
  --line: #e9e2d6;
  --paper: #ffffff;

  /* Type */
  --font-sans: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", "Segoe UI", Roboto, sans-serif;
  /* 큰 제목: Noto Serif Display (로고 DREAM 글자와 같은 계열의 고대비 세리프)
     작은 이탤릭(학회명 등): Source Serif 4.  한글은 두 경우 모두 Pretendard로 fallback */
  --font-display: "Noto Serif Display", "Pretendard Variable", Pretendard, Georgia, "Times New Roman", serif;
  --font-serif: "Source Serif 4", "Pretendard Variable", Pretendard, Georgia, "Times New Roman", serif;

  /* Layout */
  --wrap: 1160px;
  --gutter: 28px;
  --radius: 10px;
  --radius-lg: 16px;
  --header-h: 72px;
  --shadow: 0 1px 2px rgba(31, 26, 27, .05), 0 10px 30px rgba(31, 26, 27, .06);
  --ease: cubic-bezier(.2, .7, .2, 1);

  color-scheme: light;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: calc(var(--header-h) + 16px); }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  word-break: keep-all;
  overflow-wrap: break-word;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
figure { margin: 0; }
[hidden] { display: none !important; }
a { color: var(--burgundy); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--champagne); }
h1, h2, h3, h4 { margin: 0; line-height: 1.25; color: var(--ink); }
p { margin: 0; }
ul { margin: 0; padding: 0; }
button { font: inherit; }
:focus-visible { outline: 2px solid var(--champagne); outline-offset: 2px; border-radius: 4px; }
::selection { background: var(--champagne-pale); color: var(--wine); }

.wrap { width: 100%; max-width: calc(var(--wrap) + var(--gutter) * 2); margin: 0 auto; padding: 0 var(--gutter); }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link { position: absolute; left: -9999px; top: 8px; z-index: 100; background: var(--wine); color: #fff; padding: 8px 14px; border-radius: 6px; }
.skip-link:focus { left: 8px; }
.page-end { padding-bottom: 80px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(1.4) blur(12px);
  -webkit-backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid var(--line);
  transition: background .3s var(--ease), border-color .3s var(--ease);
}
.site-header__inner { display: flex; align-items: center; gap: 24px; height: var(--header-h); }
.brand { flex: none; margin-right: auto; }
.brand img { width: 156px; height: auto; }
.brand__light { display: none; }
.site-nav ul { list-style: none; display: flex; gap: 2px; }
.site-nav a {
  position: relative; display: block; padding: 8px 12px;
  color: var(--ink-soft); font-size: 15px; font-weight: 500; letter-spacing: -.005em;
}
.site-nav a::after {
  content: ""; position: absolute; left: 12px; right: 12px; bottom: 2px; height: 1px;
  background: var(--champagne); transform: scaleX(0); transform-origin: left; transition: transform .25s var(--ease);
}
.site-nav a:hover { color: var(--burgundy); text-decoration: none; }
.site-nav a:hover::after, .site-nav a[aria-current="page"]::after { transform: scaleX(1); }
.site-nav a[aria-current="page"] { color: var(--burgundy); font-weight: 700; }
.site-header__tools { display: flex; align-items: center; gap: 8px; }

.lang-switch {
  display: inline-flex; padding: 3px; border-radius: 999px; border: 1px solid var(--champagne-line);
  font-size: 12px; font-weight: 700; letter-spacing: .08em;
}
.lang-switch a { padding: 4px 10px; border-radius: 999px; color: var(--stone); line-height: 1.4; }
.lang-switch a:hover { color: var(--burgundy); text-decoration: none; }
.lang-switch a[aria-current="true"] { background: var(--wine); color: var(--champagne-light); }

/* home: 헤더가 다크 히어로와 이어지다가, 스크롤하면 밝게 전환 */
.is-home .site-header:not(.is-scrolled) { background: var(--wine); border-bottom-color: rgba(200, 173, 127, .18); backdrop-filter: none; -webkit-backdrop-filter: none; }
.is-home .site-header:not(.is-scrolled) .brand__dark { display: none; }
.is-home .site-header:not(.is-scrolled) .brand__light { display: block; }
.is-home .site-header:not(.is-scrolled) .site-nav a { color: rgba(255, 255, 255, .78); }
.is-home .site-header:not(.is-scrolled) .site-nav a:hover { color: var(--champagne-light); }
.is-home .site-header:not(.is-scrolled) .lang-switch { border-color: rgba(200, 173, 127, .35); }
.is-home .site-header:not(.is-scrolled) .lang-switch a { color: rgba(255, 255, 255, .7); }
.is-home .site-header:not(.is-scrolled) .lang-switch a[aria-current="true"] { background: var(--champagne); color: var(--wine); }
.is-home .site-header:not(.is-scrolled) .nav-toggle { color: #fff; }

.nav-toggle { display: none; }

@media (max-width: 920px) {
  .nav-toggle {
    display: grid; place-items: center; width: 44px; height: 44px; margin-right: -10px;
    background: none; border: 0; cursor: pointer; color: var(--ink);
  }
  .nav-toggle__bar, .nav-toggle__bar::before, .nav-toggle__bar::after {
    content: ""; display: block; width: 22px; height: 1.5px; background: currentColor; border-radius: 2px;
    transition: transform .2s ease, background .2s ease;
  }
  .nav-toggle__bar { position: relative; }
  .nav-toggle__bar::before { position: absolute; top: -7px; }
  .nav-toggle__bar::after { position: absolute; top: 7px; }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bar { background: transparent; }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bar::before { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bar::after { transform: translateY(-7px) rotate(-45deg); }

  .site-nav {
    position: absolute; left: 0; right: 0; top: var(--header-h);
    background: #fff; border-bottom: 1px solid var(--line); box-shadow: var(--shadow);
    display: none;
  }
  .site-nav.is-open { display: block; }
  .site-nav ul { flex-direction: column; gap: 0; padding: 8px var(--gutter) 16px; }
  .site-nav a { padding: 13px 4px; font-size: 16px; border-bottom: 1px solid var(--line); }
  .site-nav a::after { display: none; }
  .site-nav li:last-child a { border-bottom: 0; }
  .is-home .site-header:not(.is-scrolled) .site-nav { background: var(--wine); border-color: rgba(200, 173, 127, .18); }
  .is-home .site-header:not(.is-scrolled) .site-nav a { border-color: rgba(255, 255, 255, .08); }
}

/* ---------- Common pieces ---------- */
.eyebrow {
  display: flex; align-items: center; gap: 12px;
  font-size: 12px; font-weight: 700; letter-spacing: .22em; text-transform: uppercase;
  color: var(--champagne-ink); margin-bottom: 14px;
}
.eyebrow::before { content: ""; width: 28px; height: 1px; background: currentColor; opacity: .7; }
.section { padding: 96px 0; }
.section--ivory { background: var(--ivory); }
.section--tight { padding: 56px 0; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 40px; }
.section-head h2, .h2 { font-family: var(--font-display); font-size: clamp(1.9rem, 3.2vw, 2.5rem); font-weight: 500; letter-spacing: -.015em; }
html[lang="ko"] .section-head h2, html[lang="ko"] .h2 { font-weight: 600; letter-spacing: -.03em; }
.section-head__more { font-weight: 600; font-size: 14.5px; white-space: nowrap; color: var(--ink-soft); border-bottom: 1px solid var(--champagne); padding-bottom: 2px; }
.section-head__more:hover { color: var(--burgundy); text-decoration: none; }
.section-head__more::after { content: " →"; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 26px; border-radius: 999px; font-weight: 700; font-size: 15px; letter-spacing: .01em;
  border: 1px solid transparent; transition: background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease), filter .2s var(--ease);
}
.btn:hover { text-decoration: none; }
.btn--champagne { background: var(--champagne-grad); color: var(--wine); box-shadow: 0 8px 24px rgba(200, 173, 127, .22), inset 0 1px 0 rgba(255, 255, 255, .35); }
.btn--champagne:hover { filter: brightness(1.06); box-shadow: 0 10px 30px rgba(200, 173, 127, .32), inset 0 1px 0 rgba(255, 255, 255, .35); }
.btn--line { border-color: rgba(230, 214, 179, .45); color: var(--champagne-light); }
.btn--line:hover { border-color: var(--champagne-light); background: rgba(230, 214, 179, .08); }
.btn--primary { background: var(--wine); color: var(--champagne-light); }
.btn--primary:hover { background: var(--burgundy); color: #fff; }
.btn--outline { border-color: var(--burgundy); color: var(--burgundy); }
.btn--outline:hover { background: var(--burgundy); color: #fff; }

.chip-list { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; }
.chip-list li {
  font-size: 13.5px; font-weight: 500; color: var(--ink-soft);
  background: #fff; border: 1px solid var(--champagne-line); border-radius: 999px; padding: 5px 13px;
}

.badge {
  display: inline-block; font-size: 11.5px; font-weight: 700; letter-spacing: .04em; line-height: 1;
  padding: 5px 8px; border-radius: 5px; background: var(--ivory); color: var(--ink-soft); vertical-align: 2px;
}
.badge--journal { background: #f5e9ec; color: var(--burgundy); }
.badge--conference { background: var(--champagne-pale); color: var(--champagne-ink); }
.badge--workshop { background: #eaf0ea; color: #3a5a43; }
.badge--preprint { background: #eef0f2; color: #4c5561; }
.badge--award { background: var(--champagne-grad); color: var(--wine); }

.pill {
  display: inline-block; font-size: 13px; font-weight: 600; line-height: 1;
  padding: 7px 12px; border-radius: 999px; border: 1px solid var(--line); color: var(--ink-soft); background: #fff;
  transition: border-color .15s ease, color .15s ease;
}
.pill:hover { border-color: var(--champagne); color: var(--burgundy); text-decoration: none; }
.pill--btn { cursor: pointer; }

.prose p + p { margin-top: 1.1em; }
.prose strong { color: var(--burgundy); font-weight: 700; }

/* ---------- Page head (sub pages) ---------- */
.page-head {
  position: relative; overflow: hidden;
  background: linear-gradient(180deg, var(--ivory) 0%, #fff 100%);
  padding: 80px 0 56px; border-bottom: 1px solid var(--champagne-line);
}
.page-head h1 { font-family: var(--font-display); font-size: clamp(2.4rem, 5vw, 3.6rem); font-weight: 500; letter-spacing: -.02em; }
html[lang="ko"] .page-head h1 { font-weight: 600; letter-spacing: -.035em; }
.page-lead { margin-top: 14px; color: var(--stone); font-size: 17px; max-width: 60ch; }

/* ---------- Home: hero ---------- */
.hero {
  position: relative; overflow: hidden; color: #fff;
  background:
    radial-gradient(900px 520px at 88% 115%, rgba(200, 173, 127, .20), transparent 62%),
    radial-gradient(700px 480px at -10% -20%, rgba(111, 26, 45, .55), transparent 60%),
    linear-gradient(180deg, var(--wine) 0%, var(--wine-2) 100%);
}
.hero__grid { display: grid; grid-template-columns: 1.08fr 1fr; gap: 72px; align-items: center; padding-top: 88px; padding-bottom: 104px; }
.hero__title {
  font-family: var(--font-display); color: #fff; font-weight: 300;
  font-size: clamp(1.9rem, 3.5vw, 3rem); line-height: 1.12; letter-spacing: -.012em;
  text-wrap: balance;
}
.hero__title .ini { color: var(--champagne); font-weight: 500; }
.hero__ko { margin-top: 22px; font-size: 19px; font-weight: 600; letter-spacing: -.01em; color: var(--champagne-light); }
.hero__title + .hero__lead { margin-top: 26px; }
.hero__lead { margin-top: 12px; font-size: 16.5px; line-height: 1.8; color: rgba(255, 255, 255, .72); max-width: 46ch; }
.hero__cta { margin-top: 38px; display: flex; flex-wrap: wrap; gap: 12px; }
.hero__media { position: relative; margin: 0; }
.hero__media::before {
  /* 샴페인 골드 오프셋 프레임 */
  content: ""; position: absolute; inset: 22px -22px -22px 22px;
  border: 1px solid rgba(200, 173, 127, .55); border-radius: 20px; pointer-events: none;
}
.hero__media img {
  position: relative; width: 100%; aspect-ratio: 4 / 3; object-fit: cover;
  border-radius: 18px; box-shadow: 0 30px 80px rgba(0, 0, 0, .45);
}

/* ---------- Home: notice ---------- */
.notice { background: var(--ivory); border-bottom: 1px solid var(--champagne-line); }
.notice__inner { display: flex; gap: 22px; align-items: flex-start; padding-top: 22px; padding-bottom: 22px; }
.notice__label {
  flex: none; margin-top: 3px; font-size: 11.5px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase;
  color: var(--champagne-ink); border: 1px solid var(--champagne); padding: 4px 10px; border-radius: 999px;
}
.notice__items { list-style: none; display: grid; gap: 4px; font-size: 15.5px; color: var(--ink-soft); }
.notice__items strong { color: var(--ink); }
.notice__items a { font-weight: 600; }

/* ---------- Home: intro ---------- */
.intro { display: grid; grid-template-columns: 1.1fr .9fr; gap: 72px; align-items: center; }
.intro__title { margin-bottom: 24px; }
.intro__text { font-size: 16.5px; color: var(--ink-soft); }
.intro__media img { border-radius: var(--radius-lg); width: 100%; aspect-ratio: 16 / 11; object-fit: cover; }
.intro__keywords { margin-top: 28px; padding-top: 18px; border-top: 1px solid var(--champagne-line); font-size: 13.5px; color: var(--stone); line-height: 1.7; }
.intro__keywords b { color: var(--champagne-ink); font-weight: 700; margin-right: 10px; letter-spacing: .06em; }

/* ---------- Home: research domains ---------- */
.domains { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.domain { background: #fff; border-radius: var(--radius-lg); overflow: hidden; display: flex; flex-direction: column; box-shadow: var(--shadow); }
.domain__media { display: grid; gap: 3px; background: var(--ivory); height: 260px; }
.domain__media img { width: 100%; height: 100%; min-height: 0; object-fit: cover; }
.domain__media--1 img { object-position: center bottom; }
.domain__media--2 { grid-template-columns: 1fr 1fr; }
.domain__media--3 { grid-template-columns: 1.6fr 1fr; grid-template-rows: 1fr 1fr; }
.domain__media--3 img:first-child { grid-row: span 2; }
.domain__body { padding: 28px 30px 32px; }
.domain__num { font-family: var(--font-serif); font-size: 15px; color: var(--champagne-ink); margin-bottom: 4px; }
.domain__body h3 { font-family: var(--font-display); font-size: 27px; font-weight: 500; margin-bottom: 16px; }

/* ---------- News list ---------- */
.news-list { list-style: none; border-top: 1px solid var(--line); }
.news-item { display: grid; grid-template-columns: 120px 84px 1fr; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--line); align-items: baseline; }
.news-item__date { font-size: 14px; color: var(--stone); font-variant-numeric: tabular-nums; white-space: nowrap; }
.news-item__tag { font-size: 11.5px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--stone); }
html[lang="ko"] .news-item__tag { letter-spacing: .02em; font-size: 12.5px; }
.news-item__tag--paper { color: var(--burgundy); }
.news-item__tag--grant, .news-item__tag--award { color: var(--champagne-ink); }
.news-item__tag--member { color: #3f3a6b; }
.news-item__text { font-size: 15.5px; }
.news-item__text a { font-weight: 600; }
.news-item__text em { font-style: normal; font-weight: 600; color: var(--ink); }

.news-year { display: grid; grid-template-columns: 140px 1fr; gap: 24px; padding: 8px 0 44px; }
.news-year__label { font-family: var(--font-display); font-size: 30px; font-weight: 400; color: var(--champagne-ink); position: sticky; top: calc(var(--header-h) + 20px); align-self: start; }
.news-year .news-item { grid-template-columns: 90px 84px 1fr; }

/* ---------- Publications ---------- */
.pub-controls {
  position: sticky; top: var(--header-h); z-index: 10; background: rgba(255, 255, 255, .96);
  display: flex; flex-wrap: wrap; gap: 12px 20px; align-items: center; justify-content: space-between;
  padding: 18px 0; margin-bottom: 8px; border-bottom: 1px solid var(--line);
}
.filter-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.filter-chip {
  cursor: pointer; font-size: 14px; font-weight: 600; color: var(--ink-soft);
  background: #fff; border: 1px solid var(--line); border-radius: 999px; padding: 7px 15px;
}
.filter-chip span { color: var(--stone); font-weight: 500; margin-left: 6px; font-variant-numeric: tabular-nums; }
.filter-chip:hover { border-color: var(--champagne); }
.filter-chip[aria-pressed="true"] { background: var(--wine); border-color: var(--wine); color: var(--champagne-light); }
.filter-chip[aria-pressed="true"] span { color: rgba(230, 214, 179, .7); }
.pub-search {
  width: min(320px, 100%); font: inherit; font-size: 15px; padding: 9px 14px 9px 38px;
  border: 1px solid var(--line); border-radius: 999px; background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%23716760' stroke-width='2' stroke-linecap='round'%3E%3Ccircle cx='7' cy='7' r='5.5'/%3E%3Cpath d='m11.5 11.5 3 3'/%3E%3C/svg%3E") no-repeat 14px center;
}
.pub-search:focus { outline: none; border-color: var(--champagne); box-shadow: 0 0 0 3px rgba(200, 173, 127, .22); }

.pub-year { display: grid; grid-template-columns: 110px 1fr; gap: 24px; padding: 32px 0 8px; }
.pub-year__label { font-family: var(--font-display); font-size: 30px; font-weight: 400; color: var(--champagne-ink); position: sticky; top: calc(var(--header-h) + 96px); align-self: start; }
.pub-list { display: grid; }
.pub { display: grid; grid-template-columns: 200px 1fr; gap: 26px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.pub-list .pub:last-child { border-bottom: 0; }
.pub__thumb {
  background: var(--ivory); border-radius: var(--radius); overflow: hidden;
  aspect-ratio: 16 / 10; display: grid; place-items: center; border: 1px solid var(--line);
}
.pub__thumb img { width: 100%; height: 100%; object-fit: contain; }
.pub__thumb-ph { font-family: var(--font-serif); color: var(--champagne-ink); font-size: 18px; padding: 8px; text-align: center; }
.pub__title { font-size: 17px; font-weight: 700; line-height: 1.45; letter-spacing: -.005em; }
.pub__authors { margin-top: 6px; font-size: 14.5px; color: var(--stone); line-height: 1.6; }
.au--lab { color: var(--ink); font-weight: 700; }
.pub__meta { margin-top: 8px; display: flex; flex-wrap: wrap; gap: 6px 8px; align-items: center; }
.pub__venue { font-family: var(--font-serif); font-size: 15.5px; color: var(--burgundy); font-style: italic; margin-right: 4px; }
.pub__links { margin-top: 12px; display: flex; flex-wrap: wrap; gap: 6px; }
.pub__links:empty { display: none; }
.bibtex { margin-top: 12px; position: relative; }
.bibtex pre { margin: 0; background: var(--ivory); border: 1px solid var(--line); border-radius: 8px; padding: 14px 16px; overflow-x: auto; font-size: 12.5px; line-height: 1.55; }
.bibtex [data-copy] { position: absolute; top: 8px; right: 8px; }
.pub-empty { padding: 48px 0; text-align: center; color: var(--stone); }

/* home: selected publications */
.pub-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.pub-card { background: #fff; border-radius: var(--radius-lg); overflow: hidden; display: flex; flex-direction: column; box-shadow: var(--shadow); }
.pub-card__thumb { aspect-ratio: 16 / 9; background: var(--ivory); }
.pub-card__thumb img { width: 100%; height: 100%; object-fit: cover; }
.pub-card__body { padding: 22px 24px 24px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.pub-card__venue { font-family: var(--font-serif); font-style: italic; font-size: 15px; color: var(--champagne-ink); }
.pub-card__title { font-size: 16px; font-weight: 700; line-height: 1.45; }
.pub-card__authors { font-size: 13.5px; color: var(--stone); line-height: 1.55; }
.pub-card .pub__links { margin-top: auto; padding-top: 8px; }

/* compact list (research page) */
.pub-mini-list { list-style: none; display: grid; gap: 10px; }
.pub-mini { font-size: 14.5px; line-height: 1.55; padding-left: 18px; position: relative; }
.pub-mini::before { content: ""; position: absolute; left: 0; top: .72em; width: 8px; height: 1px; background: var(--champagne); }
.pub-mini__title { font-weight: 600; }
.pub-mini__venue { color: var(--stone); margin-left: 6px; font-family: var(--font-serif); font-style: italic; }
.pub-mini__link { margin-left: 8px; font-weight: 600; font-size: 13px; }

/* ---------- Members ---------- */
.member-group { padding: 64px 0 8px; }
.member-group + .member-group { border-top: 1px solid var(--line); }
.member-group__head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 32px; }
.member-group__head h2 { font-family: var(--font-display); font-size: 30px; font-weight: 500; }
html[lang="ko"] .member-group__head h2 { font-weight: 600; letter-spacing: -.03em; }
.member-group__head span { color: var(--champagne-ink); font-family: var(--font-serif); font-size: 18px; }

.prof { display: grid; grid-template-columns: 250px 1fr; gap: 52px; align-items: start; }
.prof__photo { position: relative; }
.prof__photo::before { content: ""; position: absolute; inset: 14px -14px -14px 14px; border: 1px solid var(--champagne); border-radius: 18px; }
.prof__photo img { position: relative; width: 100%; aspect-ratio: 3 / 4; object-fit: cover; border-radius: var(--radius-lg); }
.prof__name { font-family: var(--font-display); font-size: 34px; font-weight: 500; letter-spacing: -.015em; }
html[lang="ko"] .prof__name { font-weight: 700; letter-spacing: -.03em; }
.prof__name span { font-family: var(--font-sans); font-size: 18px; font-weight: 500; color: var(--stone); margin-left: 12px; letter-spacing: 0; }
.prof__position { margin-top: 6px; font-size: 16px; color: var(--ink-soft); }
.prof__links { margin-top: 18px; display: flex; flex-wrap: wrap; gap: 8px; }
.prof__cols { margin-top: 32px; display: grid; grid-template-columns: 1fr 1fr; gap: 30px 44px; }
.prof__cols h3 { font-size: 12px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; color: var(--champagne-ink); margin-bottom: 12px; }
html[lang="ko"] .prof__cols h3 { letter-spacing: .04em; font-size: 13px; }
.cv-list { list-style: none; display: grid; gap: 8px; font-size: 15px; }
.cv-list li { display: grid; grid-template-columns: 96px 1fr; gap: 12px; }
.cv-list .cv-period { color: var(--stone); font-variant-numeric: tabular-nums; white-space: nowrap; }
.bullet-list { list-style: none; display: grid; gap: 6px; font-size: 15px; }
.bullet-list li { padding-left: 18px; position: relative; }
.bullet-list li::before { content: ""; position: absolute; left: 0; top: .8em; width: 8px; height: 1px; background: var(--champagne); }

.member-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 36px 26px; }
.member { scroll-margin-top: calc(var(--header-h) + 24px); }
.member__photo { aspect-ratio: 3 / 4; border-radius: var(--radius-lg); overflow: hidden; background: var(--ivory); }
.member__photo img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.member:hover .member__photo img { transform: scale(1.03); }
.member__initial { width: 100%; height: 100%; display: grid; place-items: center; font-family: var(--font-serif); font-size: 60px; font-weight: 500; color: var(--champagne-ink); background: linear-gradient(160deg, var(--ivory) 0%, var(--champagne-pale) 100%); }
.member__name { margin-top: 16px; font-size: 18px; font-weight: 700; letter-spacing: -.01em; }
.member__name-sub { font-size: 14px; font-weight: 500; color: var(--stone); margin-left: 7px; letter-spacing: 0; }
.member__program { margin-top: 2px; font-size: 13.5px; color: var(--champagne-ink); font-weight: 600; }
.member__interests { margin-top: 6px; font-size: 14px; color: var(--ink-soft); line-height: 1.55; }
.member__links { margin-top: 10px; display: flex; gap: 6px; }
.member:target .member__photo { box-shadow: 0 0 0 2px var(--champagne); }

.icon-link { display: inline-grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; border: 1px solid var(--line); color: var(--ink-soft); background: #fff; }
.icon-link:hover { color: var(--burgundy); border-color: var(--champagne); text-decoration: none; }
.icon-link svg { width: 16px; height: 16px; }
.pill svg { width: 14px; height: 14px; vertical-align: -2px; margin-right: 5px; }

.alumni-list { list-style: none; display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.alumni { display: flex; gap: 14px; align-items: center; }
.alumni__photo { flex: none; width: 56px; height: 56px; border-radius: 50%; overflow: hidden; background: var(--ivory); }
.alumni__photo img { width: 100%; height: 100%; object-fit: cover; }
.alumni__photo .member__initial { font-size: 22px; }
.alumni__name { font-weight: 700; }
.alumni__meta { font-size: 14px; color: var(--stone); }

/* ---------- Research ---------- */
.topic { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; padding: 56px 0; border-bottom: 1px solid var(--line); }
.topic:last-child { border-bottom: 0; }
.topic:nth-child(even) .topic__media { order: 2; }
.topic__media img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; border-radius: var(--radius-lg); background: var(--ivory); }
.topic__num { font-family: var(--font-serif); color: var(--champagne-ink); font-size: 16px; margin-bottom: 6px; }
.topic h2 { font-family: var(--font-display); font-size: 34px; font-weight: 500; letter-spacing: -.015em; }
.topic__summary { margin-top: 12px; color: var(--ink-soft); }
.topic .chip-list { margin-top: 20px; }
.topic__pubs { margin-top: 26px; padding-top: 18px; border-top: 1px solid var(--line); }
.topic__pubs h3 { font-size: 12px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; color: var(--champagne-ink); margin-bottom: 12px; }

.project-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.project { background: #fff; border-radius: var(--radius-lg); overflow: hidden; display: flex; flex-direction: column; box-shadow: var(--shadow); }
.project__media img { width: 100%; aspect-ratio: 16 / 8; object-fit: cover; }
.project--media { grid-column: 1 / -1; display: grid; grid-template-columns: 1.1fr 1fr; }
.project--media .project__media img { height: 100%; aspect-ratio: auto; min-height: 280px; }
.project--media .project__body { align-content: center; padding: 36px 40px; }
.project--media h3 { font-size: 26px; }
.project__body { padding: 24px 26px 26px; display: grid; gap: 10px; }
.project__top { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.project__status { font-size: 11.5px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--wine); background: var(--champagne-grad); padding: 5px 9px; border-radius: 5px; }
.project__status--completed { color: var(--stone); background: var(--ivory); }
.project__sponsor { font-size: 12px; font-weight: 700; color: var(--burgundy); border: 1px solid #ecd6db; padding: 4px 8px; border-radius: 5px; }
.project h3 { font-size: 20px; font-weight: 700; letter-spacing: -.01em; }
.project__desc { color: var(--ink-soft); font-size: 15px; }
.project__members { font-size: 14.5px; color: var(--stone); }
.project__members a { color: var(--ink-soft); font-weight: 600; }

/* ---------- Videos ---------- */
.video-feature { display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; align-items: center; margin-bottom: 40px; }
.video-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.video-grid--3 { grid-template-columns: repeat(3, 1fr); }
.video__frame {
  position: relative; display: block; width: 100%; aspect-ratio: 16 / 9; border-radius: var(--radius); overflow: hidden;
  background: var(--wine); border: 0; padding: 0; cursor: pointer;
}
.video__frame img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s var(--ease), opacity .2s; opacity: .9; }
.video__frame:hover img { transform: scale(1.03); opacity: 1; }
.video__frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.video__play {
  position: absolute; left: 50%; top: 50%; width: 54px; height: 54px; margin: -27px 0 0 -27px; border-radius: 50%;
  background: rgba(42, 12, 20, .72); border: 1px solid rgba(230, 214, 179, .7); display: grid; place-items: center;
  backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); transition: transform .2s var(--ease);
}
.video__frame:hover .video__play { transform: scale(1.06); }
.video__play::after { content: ""; margin-left: 4px; border-style: solid; border-width: 8px 0 8px 13px; border-color: transparent transparent transparent var(--champagne-light); }
.video--feature .video__play { width: 76px; height: 76px; margin: -38px 0 0 -38px; }
.video--feature .video__play::after { border-width: 11px 0 11px 18px; }
.video__title { margin-top: 12px; font-size: 14.5px; font-weight: 600; line-height: 1.45; }
.video__source { margin-top: 2px; font-size: 13px; color: var(--stone); }
.video-feature__text h3 { font-family: var(--font-display); font-size: 28px; font-weight: 500; line-height: 1.3; letter-spacing: -.01em; }
html[lang="ko"] .video-feature__text h3 { font-weight: 700; letter-spacing: -.03em; }
.video-feature__text p { margin-top: 12px; color: var(--ink-soft); }
.video-feature__text p.eyebrow { margin-top: 0; }

/* ---------- Events ---------- */
.event-list { list-style: none; display: grid; gap: 20px; }
.event { display: grid; grid-template-columns: 100px 1fr; gap: 28px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 26px; }
.event__date { text-align: center; background: var(--wine); color: #fff; border-radius: var(--radius); padding: 14px 6px; align-self: start; }
.event__month { font-size: 12.5px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--champagne); }
.event__day { font-family: var(--font-display); font-size: 36px; font-weight: 400; line-height: 1.1; color: var(--champagne-light); }
.event__year { font-size: 12.5px; opacity: .7; }
.event__series { font-size: 12px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; color: var(--champagne-ink); }
.event h3 { margin-top: 4px; font-size: 20px; font-weight: 700; }
.event__meta { margin-top: 8px; display: flex; flex-wrap: wrap; gap: 4px 18px; font-size: 14.5px; color: var(--stone); }
.event__meta b { color: var(--ink-soft); font-weight: 600; margin-right: 5px; }
.event__aff { color: var(--stone); }
.event__desc { margin-top: 10px; }
.event__links { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 8px; }
.event--past .event__date { background: var(--ivory); color: var(--stone); }
.event--past .event__month { color: var(--champagne-ink); }
.event--past .event__day { color: var(--ink-soft); }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 32px; }
.section--ivory .card { border-color: transparent; box-shadow: var(--shadow); }
.card h2 { font-family: var(--font-display); font-size: 26px; font-weight: 500; margin-bottom: 18px; }
html[lang="ko"] .card h2 { font-weight: 700; letter-spacing: -.03em; }
.card__sub { font-family: var(--font-sans); font-size: 16px; color: var(--stone); font-weight: 500; letter-spacing: 0; margin-left: 6px; }
.card__cta { margin-top: 22px; }
.contact-rows { list-style: none; display: grid; gap: 14px; font-size: 15.5px; }
.contact-rows li { display: grid; grid-template-columns: 80px 1fr; gap: 12px; }
.contact-rows .k { font-size: 12px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; color: var(--champagne-ink); padding-top: 3px; }
html[lang="ko"] .contact-rows .k { letter-spacing: .02em; font-size: 13px; }
.mono-box { margin: 16px 0; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 14px; background: var(--ivory); border: 1px dashed var(--champagne-line); border-radius: 8px; padding: 12px 14px; }
.positions { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.position h3 { font-size: 21px; font-weight: 700; }
.position__sub { color: var(--stone); font-size: 14.5px; margin-top: 2px; }
.position h4 { margin-top: 22px; margin-bottom: 8px; font-size: 12px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; color: var(--champagne-ink); }

/* ---------- RO:BIT ---------- */
.split { display: grid; grid-template-columns: 1.2fr .8fr; gap: 48px; align-items: start; }
.split__cta { margin-top: 28px; }
.highlight-list { display: grid; gap: 20px; }
.highlight { background: var(--wine); color: #fff; border-radius: var(--radius-lg); padding: 30px; }
.highlight .eyebrow { color: var(--champagne); }
html[lang="ko"] .eyebrow { letter-spacing: .14em; }
.highlight h3 { color: #fff; font-family: var(--font-display); font-size: 25px; font-weight: 500; }
.highlight p { margin-top: 10px; color: rgba(255, 255, 255, .75); font-size: 15px; }
.highlight a { color: var(--champagne-light); font-weight: 700; }
.award-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--champagne-line); }
.award { display: grid; grid-template-columns: 110px 1fr auto; gap: 8px 28px; align-items: baseline; padding: 22px 0; border-bottom: 1px solid var(--champagne-line); }
.award__date { font-family: var(--font-display); font-size: 22px; color: var(--champagne-ink); font-variant-numeric: lining-nums; }
.award__result { font-size: 12.5px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--burgundy); }
html[lang="ko"] .award__result { letter-spacing: .02em; font-size: 13.5px; }
.award__title { margin-top: 4px; font-size: 18px; font-weight: 700; letter-spacing: -.01em; }
.award__note { margin-top: 4px; font-size: 14.5px; color: var(--stone); }
.award__links { display: flex; flex-wrap: wrap; gap: 6px; justify-content: flex-end; }

/* ---------- Footer ---------- */
.site-footer { background: var(--wine); color: rgba(255, 255, 255, .7); font-size: 14.5px; }
.site-footer__grid { display: grid; grid-template-columns: 1.3fr 1.2fr .7fr; gap: 44px; padding-top: 64px; padding-bottom: 44px; }
.site-footer__brand img { width: 190px; margin-bottom: 18px; }
.site-footer h2 { color: var(--champagne); font-size: 12px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; margin-bottom: 14px; }
.site-footer p + p { margin-top: 10px; }
.site-footer a { color: #fff; }
.site-footer a:hover { color: var(--champagne-light); }
.site-footer__links { list-style: none; display: grid; gap: 6px; }
.site-footer__bottom { border-top: 1px solid rgba(200, 173, 127, .18); padding-top: 20px; padding-bottom: 26px; font-size: 13px; color: rgba(255, 255, 255, .5); }

/* ---------- 404 ---------- */
.not-found { padding: 120px 0; text-align: center; }
.not-found h1 { font-family: var(--font-display); font-size: 72px; font-weight: 400; color: var(--champagne-ink); }
.not-found p { margin: 12px 0 28px; color: var(--stone); }
.not-found .btn + .btn { margin-left: 8px; }

/* ---------- Responsive ---------- */
@media (max-width: 1000px) {
  .video-grid { grid-template-columns: repeat(3, 1fr); }
  .pub-cards { grid-template-columns: repeat(2, 1fr); }
  .hero__grid { gap: 48px; }
}
@media (max-width: 920px) {
  :root { --gutter: 20px; --header-h: 64px; }
  .section { padding: 64px 0; }
  .hero__grid { grid-template-columns: 1fr; gap: 44px; padding-top: 52px; padding-bottom: 72px; }
  .hero__media { margin-right: 22px; }
  .intro, .domains, .topic, .project-grid, .contact-grid, .positions, .split, .video-feature { grid-template-columns: 1fr; gap: 32px; }
  .topic:nth-child(even) .topic__media { order: 0; }
  .project--media { grid-template-columns: 1fr; }
  .project--media .project__media img { min-height: 0; aspect-ratio: 16 / 9; }
  .project--media .project__body { padding: 24px 26px 26px; }
  .prof { grid-template-columns: 190px 1fr; gap: 36px; }
  .prof__cols { grid-template-columns: 1fr; }
  .pub-year, .news-year { grid-template-columns: 1fr; gap: 4px; }
  .pub-year__label, .news-year__label { position: static; font-size: 26px; }
  .video-grid, .video-grid--3 { grid-template-columns: repeat(2, 1fr); }
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
  .site-footer__brand { grid-column: 1 / -1; }
}
@media (max-width: 600px) {
  :root { --gutter: 16px; }
  body { font-size: 15.5px; }
  .brand img { width: 136px; }
  .site-header__inner { gap: 12px; }
  .page-head { padding: 52px 0 36px; }
  .notice__inner { flex-direction: column; gap: 10px; }
  .news-item, .news-year .news-item { grid-template-columns: auto 1fr; gap: 2px 12px; }
  .news-item__text { grid-column: 1 / -1; }
  .pub { grid-template-columns: 1fr; gap: 14px; }
  .pub__thumb { max-width: 320px; }
  .pub-controls { position: static; }
  .pub-search { width: 100%; }
  .pub-cards { grid-template-columns: 1fr; }
  .prof { grid-template-columns: 1fr; }
  .prof__photo { max-width: 220px; }
  .member-grid { grid-template-columns: repeat(2, 1fr); gap: 28px 14px; }
  .member__name { font-size: 16px; }
  .member__name-sub { display: block; margin-left: 0; }
  .domain__media { height: 210px; }
  .event { grid-template-columns: 1fr; gap: 14px; padding: 20px; }
  .event__date { display: flex; gap: 8px; align-items: baseline; justify-content: flex-start; padding: 8px 14px; }
  .event__day { font-size: 22px; }
  .video-grid, .video-grid--3 { grid-template-columns: 1fr; }
  .site-footer__grid { grid-template-columns: 1fr; gap: 28px; }
  .contact-rows li { grid-template-columns: 1fr; gap: 0; }
  .cv-list li { grid-template-columns: 1fr; gap: 0; }
  .award { grid-template-columns: 1fr; gap: 6px; }
  .award__links { justify-content: flex-start; }
  .section-head { flex-direction: column; align-items: flex-start; }
  .card { padding: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}
@media print {
  .site-header, .site-footer, .pub-controls, .hero__cta { display: none; }
}