/* Homepage preview. Project detail pages keep their existing stylesheet. */
.home {
  --text: #243044;
  --muted: #626f80;
  --line: #e5eaf0;
  --link: #215fb4;
  --tag-bg: #f0f5fc;
  --tag-text: #315d94;
  color: var(--text);
  line-height: 1.7;
}

.home a, .home button, .home summary { -webkit-tap-highlight-color: transparent; }
.home .ko { word-break: keep-all; overflow-wrap: anywhere; }
.home a:focus-visible, .home button:focus-visible, .home summary:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 5px;
  border-radius: 3px;
}
.home [id] { scroll-margin-top: 100px; }
.home main {
  max-width: 1064px;
  padding: 0 32px 32px;
}
.home main:focus { outline: none; }
.home .skip-link {
  position: fixed;
  top: 8px;
  left: 16px;
  z-index: 30;
  padding: 10px 16px;
  background: var(--text);
  color: #fff;
  transform: translateY(-150%);
}
.home .skip-link:focus { transform: translateY(0); }

/* A quiet, compact navigation bar; mobile links remain usable without JS. */
.home .site-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: #fff;
  border-bottom: 1px solid var(--line);
}
.home .nav-inner {
  display: flex;
  align-items: center;
  gap: 28px;
  min-height: 68px;
  max-width: 1064px;
  padding: 0 32px;
  margin: 0 auto;
}
.home .wordmark {
  color: var(--text);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.035em;
  white-space: nowrap;
  text-decoration: none;
}
.home .wordmark > span { color: var(--link); }
.home .nav-links {
  order: 2;
  display: flex;
  align-items: center;
  gap: 24px;
  margin-left: auto;
}
.home .nav-links a {
  margin: 0;
  padding: 10px 0;
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
}
.home .nav-links a:hover { color: var(--link); }
.home .nav-actions { order: 3; display: flex; align-items: center; gap: 12px; }
.home .lang-toggle { margin: 0; padding: 0; gap: 2px; }
.home .lang-btn {
  padding: 7px 9px;
  font-size: 11px;
  border-color: transparent;
  border-radius: 5px;
}
.home .lang-btn.active { background: #eef3f9; color: var(--link); }
.home .menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 40px;
  padding: 0 9px;
  color: var(--text);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 5px;
  font: inherit;
  font-size: 12px;
  cursor: pointer;
}
.home .menu-toggle[hidden] { display: none; }

/* Profile, research statement, and useful links form one introduction. */
.home .hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 196px;
  gap: 60px;
  align-items: center;
  margin: 46px 0 0;
  padding-bottom: 42px;
  border-bottom: 1px solid var(--line);
}
.home .hero-copy { min-width: 0; }
.home .eyebrow {
  margin: 0 0 10px;
  color: var(--link);
  font-size: 10px;
  font-weight: 650;
  letter-spacing: 0.12em;
}
.home h1 {
  margin: 0 0 12px;
  font-size: 42px;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.035em;
}
.home h1 .kr { font-size: 22px; font-weight: 400; letter-spacing: -0.03em; }
.home .affil { font-size: 13px; line-height: 1.8; color: var(--muted); margin-bottom: 20px; }
.home .hero-portrait { margin: 0; }
.home .photo {
  width: 196px;
  height: auto;
  aspect-ratio: 180 / 220;
  border: 0;
  border-radius: 10px;
}
.home .hero-portrait figcaption { margin-top: 10px; text-align: center; font-size: 11px; color: var(--muted); }
.home .socials { display: flex; align-items: center; flex-wrap: wrap; gap: 10px 20px; margin: 0; font-size: 12px; }
.home .socials a { padding: 3px 0; font-weight: 600; }
.home .socials a > span { margin-left: 2px; font-size: 11px; }

/* Section hierarchy is carried by typography and whitespace, not boxes. */
.home section { margin: 0 0 44px; padding: 0; border: 0; background: transparent; border-radius: 0; }
.home h2 {
  margin: 0 0 17px;
  padding: 0 0 11px;
  border-bottom: 1px solid var(--line);
  font-size: 20px;
  font-weight: 650;
  letter-spacing: -0.025em;
}
.home .intro-section {
  margin: 0;
  padding: 34px 0 36px;
  border-bottom: 1px solid var(--line);
}
.home .intro-section h2 {
  margin: 0 0 18px;
  padding: 0;
  border: 0;
  font-size: 26px;
  font-weight: 520;
  letter-spacing: -0.035em;
}
.home .about-copy {
  max-width: 900px;
  font-size: 14px;
  line-height: 1.9;
}
.home .about-copy p { margin: 0 0 13px; }
.home .about-copy p:last-child { margin-bottom: 0; }
.home .news-section { margin-bottom: 42px; }
.home .news { padding-left: 18px; list-style: circle; }
.home .news li {
  display: list-item;
  padding: 4px 0 4px 4px;
  border: 0;
  font-size: 13px;
  line-height: 1.75;
}
.home .news .date {
  display: inline;
  margin: 0 8px 0 0;
  padding: 0;
  background: transparent;
  color: var(--muted);
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0;
  line-height: inherit;
  white-space: nowrap;
}
.home .news-body { display: inline; min-width: 0; }
.home .news em { font-style: normal; }

/* Uniform preview frames; tall figures are cropped only for display. */
.home .pub {
  grid-template-columns: 224px minmax(0, 1fr);
  gap: 28px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}
.home .pub:first-of-type { padding-top: 5px; }
.home .pub:last-child { border-bottom: 0; padding-bottom: 0; }
.home .pub-figure {
  display: flex;
  flex-direction: column;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--muted);
  background: #fff;
  transition: border-color 150ms ease;
}
.home .pub-figure:hover { border-color: #9bb8dd; text-decoration: none; }
.home .pub-visual { display: block; width: 100%; aspect-ratio: 16 / 10; overflow: hidden; border-radius: 6px 6px 0 0; background: #fff; }
.home .pub-visual img { display: block; width: 100%; height: 100%; object-fit: contain; }
.home .pub-figure-crop .pub-visual img { object-fit: cover; object-position: center top; }
.home .pub-figure-poster .pub-visual img { object-position: center 18%; }
.home .pub-caption {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-height: 38px;
  padding: 8px;
  border-top: 1px solid var(--line);
  font-size: 10px;
  line-height: 1.4;
  text-align: center;
}
.home .pub-body { min-width: 0; font-size: 13px; }
.home .pub-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin-bottom: 8px; }
.home .pub-tag { font-size: 10px; padding: 2px 7px; font-family: inherit; border-radius: 3px; }
.home .pub-role { color: var(--link); font-size: 10px; font-weight: 600; }
.home .pub-role-secondary { color: var(--muted); font-weight: 400; }
.home .pub-title { font-size: 16px; font-weight: 650; line-height: 1.5; letter-spacing: -0.015em; margin-bottom: 7px; }
.home .pub-authors { color: var(--muted); font-size: 12px; }
.home .pub-authors .me { color: var(--text); font-weight: 600; text-decoration: none; }
.home .pub-venue { font-size: 11px; font-style: normal; margin-top: 3px; }
.home .pub-summary { font-size: 12px; line-height: 1.75; margin: 9px 0; }
.home .pub-links { display: flex; flex-wrap: wrap; gap: 6px 8px; align-items: flex-start; margin-top: 10px; font-size: 11px; }
.home .pub-links > a, .home .pub-bibtex summary {
  display: inline-block;
  margin: 0;
  padding: 3px 8px;
  border: 1px solid #dce5ef;
  border-radius: 4px;
  line-height: 1.6;
}
.home .pub-links > a:hover, .home .pub-bibtex summary:hover { background: var(--tag-bg); text-decoration: none; }
.home .pub-bibtex { min-width: 0; max-width: 100%; }
.home .pub-bibtex[open] { flex-basis: 100%; }
.home .pub-bibtex pre { max-width: 100%; font-size: 11px; background: #f7f9fc; }

/* Keep formal project names and individual roles easy to scan. */
.home .project-group-title { margin: 26px 0 0; font-size: 11px; color: var(--link); letter-spacing: 0.035em; }
.home .project-group-title:first-of-type { margin-top: 0; }
.home .entry { grid-template-columns: minmax(0, 1fr) auto; gap: 24px; padding: 16px 0; border-bottom-style: solid; align-items: start; }
.home .entry:last-child { border: 0; }
.home .entry-main { min-width: 0; font-size: 14px; }
.home .entry-date { font-size: 11px; color: var(--muted); line-height: 2.15; }
.home .entry-role { font-size: 12px; line-height: 1.7; margin-top: 5px; }
.home .project-entry {
  grid-template-columns: 224px minmax(0, 1fr) auto;
  grid-template-areas: "thumb main date";
  gap: 28px;
  padding: 22px 0;
}
.home .project-thumb {
  grid-area: thumb;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fff;
  transition: border-color 150ms ease;
}
.home .project-thumb:hover { border-color: #9bb8dd; text-decoration: none; }
.home .project-thumb img { display: block; width: 100%; height: 100%; object-fit: cover; }
.home .project-thumb-contain img { object-fit: contain; padding: 8px; }
.home .project-thumb-duo { display: flex; justify-content: center; gap: 8px; padding: 8px 22px; }
.home .project-thumb-duo img { width: auto; max-width: calc(50% - 4px); height: 100%; object-fit: contain; }
.home .project-entry .entry-main { grid-area: main; }
.home .project-entry .entry-date { grid-area: date; }
.home .project-entry .proj-link { font-size: 15px; line-height: 1.55; }
.home .project-entry .entry-summary { font-size: 12px; line-height: 1.85; margin-top: 8px; }
.home .project-entry .entry-date small { font-size: 10px; line-height: 1.5; }
.home .project-more { display: inline-block; margin-top: 8px; font-size: 11px; font-weight: 500; }
.home .background-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 40px; }
.home .background-grid .entry { grid-template-columns: 1fr; gap: 4px; padding: 12px 0; }
.home .contact-section { margin-bottom: 0; }
.home .contact-section > p { font-size: 13px; }
.home .contact-section > p > span[style] { font-size: 11px !important; }
.home .contact-socials { display: flex; flex-wrap: wrap; gap: 20px; margin-top: 16px; }
.home footer { margin-top: 36px; padding: 18px 0 0; font-size: 10px; text-align: left; }

@media (max-width: 900px) {
  .home .nav-inner { gap: 18px; }
  .home .nav-links { gap: 16px; }
  .home .hero { grid-template-columns: minmax(0, 1fr) 160px; gap: 30px; }
  .home .photo { width: 160px; }
  .home h1 { font-size: 36px; }
  .home h1 .kr { font-size: 20px; }
  .home .pub { grid-template-columns: 192px minmax(0, 1fr); gap: 22px; }
  .home .project-entry { grid-template-columns: 192px minmax(0, 1fr) auto; gap: 22px; }
}

@media (max-width: 760px) {
  .home [id] { scroll-margin-top: 88px; }
  .home main { padding: 0 24px 24px; }
  .home .nav-inner { min-height: 62px; padding: 10px 24px; flex-wrap: wrap; gap: 0; }
  .home .nav-actions { order: 2; margin-left: auto; }
  .home .wordmark { font-size: 14px; }
  .home .nav-links { order: 3; width: 100%; margin: 8px 0 0; flex-wrap: wrap; gap: 2px 20px; }
  .home .nav-links a { padding: 10px 0; }
  .home .nav-ready .menu-toggle:not([hidden]) { display: inline-flex; }
  .home .nav-ready .nav-links { display: none; }
  .home .nav-ready .nav-links.is-open { display: flex; border-top: 1px solid var(--line); padding-top: 8px; }
  .home .hero { margin-top: 32px; padding-bottom: 34px; gap: 24px; }
  .home .background-grid { gap: 24px; }
  .home .entry { gap: 16px; }
  .home .project-entry {
    grid-template-columns: 192px minmax(0, 1fr);
    grid-template-areas: "thumb date" "thumb main";
    gap: 5px 20px;
  }
}

@media (max-width: 600px) {
  .home main { padding-right: 20px; padding-left: 20px; }
  .home .nav-inner { padding-right: 20px; padding-left: 20px; }
  .home .nav-actions { gap: 7px; }
  .home .lang-btn { padding: 8px 7px; }
  .home .hero { grid-template-columns: minmax(0, 1fr); position: relative; }
  .home .hero-copy { padding-top: 0; }
  .home .hero-portrait { position: absolute; top: 0; right: 0; margin: 0; }
  .home .photo { width: 74px; border-radius: 6px; margin: 0; }
  .home .hero-portrait figcaption { display: none; }
  .home .eyebrow { max-width: calc(100% - 92px); font-size: 8px; letter-spacing: 0.07em; margin-bottom: 10px; }
  .home h1 { max-width: calc(100% - 88px); font-size: 29px; line-height: 1.15; margin-bottom: 20px; }
  .home h1 .kr { display: block; font-size: 16px; margin: 7px 0 0; }
  .home .affil { font-size: 12px; margin-bottom: 14px; }
  .home .socials { gap: 8px 17px; font-size: 12px; }
  .home section { margin-bottom: 34px; }
  .home h2 { font-size: 19px; margin-bottom: 14px; }
  .home .intro-section { margin-bottom: 0; padding: 29px 0 31px; }
  .home .intro-section h2 { margin-bottom: 16px; font-size: 23px; }
  .home .about-copy { font-size: 13px; line-height: 1.85; }
  .home .news-section { margin-bottom: 34px; }
  .home .news { padding-left: 17px; }
  .home .news li { padding: 5px 0 5px 2px; font-size: 12px; }
  .home .news .date { margin-right: 6px; font-size: 11px; }
  .home .pub { grid-template-columns: minmax(0, 1fr); gap: 16px; padding: 22px 0; }
  .home .pub-figure { max-width: 360px; justify-self: start; }
  .home .pub-title { font-size: 15px; }
  .home .pub-links > a, .home .pub-bibtex summary { padding: 6px 9px; }
  .home .entry { grid-template-columns: 1fr; gap: 6px; }
  .home .project-entry {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas: "thumb" "date" "main";
    gap: 9px;
  }
  .home .project-thumb { width: min(100%, 360px); }
  .home .project-entry .entry-date small { display: inline; margin-left: 7px; }
  .home .project-entry .proj-link { font-size: 14px; }
  .home .background-grid { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .home .contact-section { margin-bottom: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .home *, .home *::before, .home *::after { transition: none !important; }
}

@media print {
  .home .site-nav, .home .skip-link, .home .menu-toggle { display: none; }
  .home main { max-width: none; padding: 0; }
  .home .hero { margin-top: 0; }
  .home .pub, .home .entry { break-inside: avoid; }
}