:root {
  --ink: #17242f;
  --muted: #5d6872;
  --paper: #fbfaf7;
  --surface: #ffffff;
  --line: #dce2e3;
  --accent: #096b72;
  --accent-dark: #07565c;
  --warm: #c66a3d;
  --max-width: 1120px;
  --shadow: 0 18px 50px rgba(23, 36, 47, 0.09);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.68;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--accent-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--warm);
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 0.9rem;
  transform: translateY(-160%);
  color: white;
  background: var(--ink);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  border-bottom: 1px solid rgba(23, 36, 47, 0.1);
  background: rgba(251, 250, 247, 0.94);
}

.nav-wrap {
  width: min(var(--max-width), calc(100% - 2rem));
  min-height: 76px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.site-name {
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.22rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  text-decoration: none;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0.35rem 1.25rem;
}

.site-nav a {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-decoration: none;
  text-transform: uppercase;
}

.site-nav a[aria-current="page"],
.site-nav a:hover {
  color: var(--accent);
}

main {
  min-height: calc(100vh - 220px);
}

.container {
  width: min(var(--max-width), calc(100% - 2rem));
  margin-inline: auto;
}

.hero {
  padding: clamp(2.4rem, 5vw, 4.5rem) 0 clamp(2.5rem, 5vw, 4.5rem);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(260px, 0.65fr);
  gap: clamp(2.5rem, 7vw, 6rem);
  align-items: start;
}

.eyebrow {
  margin: 0 0 0.8rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 700;
  line-height: 1.15;
}

h1 {
  max-width: 800px;
  margin: 0;
  font-size: clamp(3rem, 8vw, 6.4rem);
  letter-spacing: -0.055em;
}

.hero h1 span[lang="ko"] {
  display: block;
  margin-top: 0.08em;
  font-size: 0.62em;
  letter-spacing: -0.035em;
}

.page-title {
  font-size: clamp(2.35rem, 5vw, 3.9rem);
  letter-spacing: -0.045em;
}

h2 {
  margin: 0 0 1.25rem;
  font-size: clamp(2rem, 4vw, 3.1rem);
  letter-spacing: -0.035em;
}

h3 {
  margin: 0 0 0.45rem;
  font-size: 1.35rem;
}

.hero-role {
  max-width: 720px;
  margin: 1.4rem 0 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.35rem, 3vw, 2rem);
  line-height: 1.4;
}

.hero-focus {
  max-width: 680px;
  margin: 1.1rem 0 0;
  color: var(--muted);
  font-size: 1.06rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.62rem 1rem;
  border: 1px solid var(--accent);
  border-radius: 999px;
  color: white;
  background: var(--accent);
  font-size: 0.9rem;
  font-weight: 750;
  text-decoration: none;
}

.button:hover {
  border-color: var(--accent-dark);
  color: white;
  background: var(--accent-dark);
}

.button.secondary {
  color: var(--accent-dark);
  background: transparent;
}

.button.secondary:hover {
  color: white;
  background: var(--accent-dark);
}

.portrait-frame {
  position: relative;
  width: min(100%, 390px);
  margin-inline: auto;
}

.portrait-frame::before {
  position: absolute;
  z-index: -1;
  inset: -1.15rem 1.15rem 1.15rem -1.15rem;
  border-radius: 0.25rem;
  background: #dcebec;
  content: "";
}

.portrait-frame img {
  width: 100%;
  aspect-ratio: 3 / 4;
  border-radius: 0.25rem;
  box-shadow: var(--shadow);
  object-fit: cover;
  object-position: center 20%;
}

.section {
  padding: clamp(3.5rem, 7vw, 6rem) 0;
}

.section-rule {
  border-top: 1px solid var(--line);
}

.section-heading {
  display: grid;
  grid-template-columns: 0.45fr 1fr;
  gap: 2rem;
  align-items: start;
  margin-bottom: 2rem;
}

.section-heading p {
  max-width: 680px;
  margin: 0;
  color: var(--muted);
}

.feature-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.75fr);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.feature-copy {
  padding: clamp(1.5rem, 4vw, 3rem);
}

.feature-copy h3 {
  font-size: clamp(1.7rem, 3vw, 2.35rem);
}

.status {
  display: inline-block;
  margin-bottom: 1rem;
  padding: 0.25rem 0.55rem;
  border-radius: 0.2rem;
  color: var(--accent-dark);
  background: #e2f0f0;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.authors,
.citation,
.meta {
  color: var(--muted);
}

.paper-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1rem;
  margin-top: 1.15rem;
  font-size: 0.92rem;
  font-weight: 750;
}

.feature-figure {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 1.5rem;
  background: #edf3f1;
}

.feature-figure img {
  width: 100%;
}

figcaption {
  margin-top: 0.8rem;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.45;
}

.bio-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.65fr;
  gap: clamp(2rem, 6vw, 5rem);
}

.contact-card {
  padding: 1.5rem;
  border-top: 3px solid var(--accent);
  background: var(--surface);
}

.contact-card p {
  margin: 0.35rem 0;
}

.page-header {
  padding: clamp(2.4rem, 5vw, 4rem) 0 2rem;
}

.page-intro {
  max-width: 730px;
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 1.1rem;
}

.page-banner {
  margin: 0 0 clamp(3rem, 6vw, 5rem);
}

.page-banner img {
  width: 100%;
  aspect-ratio: 16 / 7;
  border-radius: 0.35rem;
  object-fit: cover;
  object-position: center 54%;
}

.page-banner figcaption {
  margin-top: 0.65rem;
}

.research-footer-photo {
  margin-top: clamp(3rem, 6vw, 5rem);
}

.research-section {
  padding: 2.5rem 0;
  border-top: 1px solid var(--line);
}

.research-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.research-item {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: 1rem;
  padding: 1.7rem 0;
  border-bottom: 1px solid var(--line);
}

.research-item:last-child {
  border-bottom: 0;
}

.item-number {
  color: var(--warm);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.2rem;
  font-variant-numeric: tabular-nums;
}

.research-item p {
  margin: 0.25rem 0;
}

.research-title {
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.24rem;
  font-weight: 700;
  line-height: 1.4;
  text-decoration: none;
}

.research-title:hover {
  color: var(--accent);
}

.compact-list {
  margin: 0;
  padding-left: 1.25rem;
}

.compact-list li {
  margin-bottom: 0.9rem;
}

.teaching-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  padding-bottom: 5rem;
}

.teaching-card {
  padding: 1.6rem;
  border: 1px solid var(--line);
  border-radius: 0.35rem;
  background: var(--surface);
}

.teaching-card h2 {
  font-size: 1.55rem;
}

.teaching-card p {
  margin: -0.65rem 0 1rem;
  color: var(--muted);
}

.link-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.link-card {
  display: flex;
  min-width: 0;
  padding: 1.2rem 1.3rem;
  border: 1px solid var(--line);
  border-radius: 0.35rem;
  flex-direction: column;
  background: var(--surface);
}

.link-card:hover {
  border-color: var(--accent);
}

.link-card a {
  color: var(--ink);
  text-decoration: none;
}

.link-card a:hover {
  color: var(--accent-dark);
  text-decoration: underline;
}

.link-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.name-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--line);
}

.name-grid > * {
  min-width: 0;
  padding: 0.85rem 0.8rem 0.85rem 0;
  border-bottom: 1px solid var(--line);
  overflow-wrap: anywhere;
}

.name-grid span {
  color: var(--muted);
}

.prose-page {
  max-width: 980px;
}

.music-page-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.9fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.music-photo-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.7rem;
  align-items: start;
  justify-self: end;
  width: min(100%, 460px);
}

.music-photo-grid figure {
  min-width: 0;
  margin: 0;
}

.music-photo-grid img {
  width: 100%;
  aspect-ratio: 3 / 2;
  border-radius: 0.25rem;
  object-fit: cover;
}

.music-photo-grid figcaption {
  margin-top: 0.45rem;
  font-size: 0.7rem;
}

.music-highlight {
  display: flex;
  max-width: 760px;
  margin-top: 1.5rem;
  padding: 0.85rem 1rem;
  border-left: 3px solid var(--warm);
  flex-direction: column;
  gap: 0.15rem;
  background: #f4eee8;
  font-size: 0.9rem;
}

.music-highlight span {
  color: var(--muted);
}

.music-era {
  display: grid;
  grid-template-columns: 4rem minmax(0, 1fr);
  gap: 1.5rem;
  padding: clamp(2.25rem, 5vw, 3.5rem) 0;
  border-top: 1px solid var(--line);
}

.era-number {
  padding-top: 0.35rem;
  color: var(--warm);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.25rem;
}

.era-copy h2 {
  margin-bottom: 1.5rem;
}

.era-copy h3 {
  margin-top: 2rem;
}

blockquote {
  margin: 2rem 0;
  padding: 1.2rem 1.5rem;
  border-left: 3px solid var(--accent);
  color: var(--muted);
  background: #edf3f1;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.08rem;
}

blockquote cite {
  display: block;
  margin-top: 0.7rem;
  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
  font-size: 0.8rem;
  font-style: normal;
}

.track-list {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.track-list li {
  display: block;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--line);
}

.track-list li p {
  margin: 0;
  font-size: 0.92rem;
}

.track-list a,
.music-highlight a {
  font-weight: 750;
}

.back-link {
  margin: 0 0 4rem 5.5rem;
}

.site-footer {
  padding: 2.5rem 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
}

.footer-wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 2rem;
}

:focus-visible {
  outline: 3px solid rgba(9, 107, 114, 0.38);
  outline-offset: 3px;
}

@media (max-width: 760px) {
  body {
    font-size: 16px;
  }

  .nav-wrap {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1rem 0;
  }

  .site-nav {
    justify-content: flex-start;
    gap: 0.4rem 0.9rem;
  }

  .site-nav a {
    font-size: 0.76rem;
  }

  .hero-grid,
  .feature-card,
  .section-heading,
  .bio-grid,
  .teaching-grid,
  .link-grid,
  .music-page-header {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-copy,
  .feature-copy,
  .feature-figure,
  .section-heading > *,
  .bio-grid > *,
  .teaching-card,
  .research-item article {
    min-width: 0;
  }

  .hero-copy {
    order: 1;
  }

  .portrait-frame {
    order: 2;
    width: min(82%, 330px);
    margin-top: 1rem;
  }

  .section-heading {
    gap: 0;
  }

  .feature-figure {
    padding: 1rem;
  }

  .research-item {
    grid-template-columns: 2rem 1fr;
    gap: 0.55rem;
  }

  .name-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .music-era {
    grid-template-columns: 2rem minmax(0, 1fr);
    gap: 0.7rem;
  }

  .page-banner img {
    aspect-ratio: 16 / 10;
  }

  .back-link {
    margin-left: 2.7rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}