:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --text: #17202a;
  --muted: #66717e;
  --line: #dfe4ea;
  --accent: #176b78;
  --accent-soft: #e8f2f3;
  --max: 1120px;
  --radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }
img { max-width: 100%; display: block; }
.container { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(223, 228, 234, .85);
}
.nav-wrap, .footer-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 72px;
  gap: 24px;
}
.brand { font-weight: 700; letter-spacing: -.02em; }
nav { display: flex; gap: 28px; font-size: .93rem; color: var(--muted); }

.hero { padding: 96px 0 72px; }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(240px, .65fr);
  align-items: center;
  gap: 72px;
}
.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}
h1, h2, h3 { margin-top: 0; line-height: 1.15; }
h1 {
  margin-bottom: 22px;
  font-family: "Source Serif 4", Georgia, serif;
  font-size: clamp(3.1rem, 7vw, 6.2rem);
  letter-spacing: -.055em;
}
h2 {
  font-family: "Source Serif 4", Georgia, serif;
  font-size: clamp(2rem, 4vw, 3.3rem);
  letter-spacing: -.035em;
}
h3 { font-size: 1.12rem; letter-spacing: -.015em; }
.lead {
  max-width: 760px;
  margin: 0;
  color: #3d4854;
  font-size: clamp(1.15rem, 2vw, 1.42rem);
  line-height: 1.55;
}
.hero-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.button {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  font-size: .9rem;
  font-weight: 600;
}
.button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.hero-mark {
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #fff, var(--accent-soft));
  border: 1px solid var(--line);
  box-shadow: 0 28px 70px rgba(30, 53, 64, .1);
}
.hero-mark img { width: 68%; height: 68%; object-fit: contain; }

.section { padding: 78px 0; border-top: 1px solid var(--line); }
.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 30px;
  margin-bottom: 34px;
}
.section-heading p { max-width: 620px; margin: 0; color: var(--muted); }

.news-list { display: grid; gap: 2px; }
.news-item {
  display: grid;
  grid-template-columns: 112px 110px 1fr;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
.news-date, .news-type { color: var(--muted); font-size: .88rem; }
.news-type { color: var(--accent); font-weight: 600; }
.news-item p { margin: 5px 0 0; color: var(--muted); }

.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card {
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.card p { margin-bottom: 0; color: var(--muted); }
.card-index { display: block; margin-bottom: 44px; color: var(--accent); font-size: .82rem; font-weight: 700; }

.project-card {
  padding: 34px;
  background: linear-gradient(135deg, var(--surface), var(--accent-soft));
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.project-label {
  margin-bottom: 28px;
  color: var(--accent);
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.project-grid {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 56px;
  align-items: start;
}
.project-card h3 {
  margin-bottom: 14px;
  font-family: "Source Serif 4", Georgia, serif;
  font-size: clamp(2.1rem, 4vw, 3.5rem);
  letter-spacing: -.045em;
}
.project-lead {
  margin: 0;
  color: #3d4854;
  font-size: 1.12rem;
}
.project-details p { margin-top: 0; color: var(--muted); }
.project-details ul { margin: 18px 0 0; padding-left: 20px; color: var(--muted); }
.project-details li + li { margin-top: 6px; }

.publication-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.publication {
  display: flex;
  flex-direction: column;
  min-height: 310px;
  padding: 30px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.publication .venue { margin-bottom: 16px; color: var(--accent); font-size: .85rem; font-weight: 700; }
.publication .authors, .publication .summary { color: var(--muted); font-size: .93rem; }
.publication .summary { margin-top: auto; padding-top: 24px; }
.publication-links { display: flex; gap: 16px; margin-top: 18px; font-size: .9rem; font-weight: 600; }

.about-grid { display: grid; grid-template-columns: .8fr 1.4fr; gap: 72px; }
.about-copy { font-size: 1.08rem; }
.about-copy p:first-child { margin-top: 0; }
.meta-list { display: grid; gap: 15px; margin: 0; padding: 0; list-style: none; }
.meta-list span { display: block; color: var(--muted); font-size: .83rem; }

.talk-list { display: grid; gap: 0; }
.talk {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 26px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
.talk-year { color: var(--accent); font-weight: 700; }
.talk p { margin: 4px 0 0; color: var(--muted); }

.site-footer { border-top: 1px solid var(--line); color: var(--muted); font-size: .88rem; }
.footer-wrap div { display: flex; gap: 20px; }

@media (max-width: 820px) {
  nav { display: none; }
  .hero { padding-top: 62px; }
  .hero-grid, .about-grid, .project-grid { grid-template-columns: 1fr; gap: 38px; }
  .hero-mark { max-width: 280px; order: -1; }
  .card-grid, .publication-grid { grid-template-columns: 1fr; }
  .news-item { grid-template-columns: 90px 1fr; }
  .news-type { display: none; }
  .section-heading { display: block; }
  .footer-wrap { align-items: flex-start; flex-direction: column; padding: 22px 0; }
}

@media (max-width: 520px) {
  .container { width: min(calc(100% - 28px), var(--max)); }
  h1 { font-size: 3.2rem; }
  .hero { padding-bottom: 54px; }
  .section { padding: 58px 0; }
  .project-card { padding: 24px; }
  .talk { grid-template-columns: 62px 1fr; }
  .footer-wrap div { flex-wrap: wrap; }
}