:root {
  --bg: #ffffff;
  --paper: #f8f9fb;
  --ink: #1f2933;
  --muted: #5d6875;
  --faint: #8a95a3;
  --line: #e5e8ee;
  --blue: #1d4ed8;
  --blue-soft: #eff6ff;
  --max: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, "Noto Sans", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.72;
}

a {
  color: var(--blue);
  text-decoration: none;
}

a:hover { text-decoration: underline; }

.layout {
  display: grid;
  grid-template-columns: 290px minmax(0, 1fr);
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto;
  gap: 54px;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 48px 0 32px;
  border-right: 1px solid var(--line);
}

.portrait {
  width: 190px;
  height: 238px;
  object-fit: cover;
  object-position: 50% 42%;
  border-radius: 6px;
  display: block;
  margin-bottom: 24px;
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.12);
}

.sidebar h1 {
  margin: 0 0 8px;
  font-size: 30px;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.subtitle {
  margin: 0 0 20px;
  color: var(--muted);
  line-height: 1.45;
}

.contact {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin: 22px 0;
  font-size: 15px;
}

.small {
  color: var(--faint);
  font-size: 13px;
  line-height: 1.55;
  max-width: 220px;
}

.content {
  min-width: 0;
  padding: 34px 0 48px;
}

.topnav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  font-size: 15px;
}

.section {
  padding: 42px 0;
  border-bottom: 1px solid var(--line);
}

.hero {
  padding-top: 64px;
}

.eyebrow {
  color: var(--blue);
  font-weight: 700;
  letter-spacing: 0.01em;
  margin: 0 0 12px;
}

h2 {
  font-size: 28px;
  line-height: 1.2;
  margin: 0 0 20px;
  letter-spacing: -0.02em;
}

.hero h2 {
  font-size: 42px;
  margin-bottom: 18px;
}

h3 {
  font-size: 18px;
  line-height: 1.35;
  margin: 0 0 7px;
}

p {
  margin: 0 0 15px;
  max-width: 760px;
}

.notice {
  margin-top: 22px;
  padding: 16px 18px;
  background: var(--blue-soft);
  border: 1px solid #dbeafe;
  border-radius: 10px;
  color: #173a6b;
  max-width: 760px;
}

.news, .awards {
  padding-left: 0;
  list-style: none;
  margin: 0;
}

.news li, .awards li {
  padding: 10px 0;
  border-bottom: 1px dashed var(--line);
}

.news li:last-child, .awards li:last-child { border-bottom: 0; }

.news span {
  display: inline-block;
  min-width: 86px;
  color: var(--faint);
  font-variant-numeric: tabular-nums;
}

.interests {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin: 18px 0 34px;
}

.interests div {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px;
}

.interests p {
  color: var(--muted);
  font-size: 14px;
  margin: 0;
}

.subhead { margin-top: 30px; }

.project {
  padding: 18px 0;
  border-bottom: 1px dashed var(--line);
}

.project:last-child { border-bottom: 0; }

.meta, .venue {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 8px;
}

.pub {
  padding: 20px 0;
  border-bottom: 1px dashed var(--line);
}

.pub:first-of-type { padding-top: 0; }

.pub:last-child { border-bottom: 0; }

.pub h3 {
  color: var(--blue);
}

.authors {
  color: #3f4854;
  font-size: 15px;
  margin-bottom: 6px;
}

.venue {
  color: #6b4f0d;
  font-weight: 600;
}

footer {
  color: var(--faint);
  font-size: 13px;
  padding-top: 36px;
}

@media (max-width: 860px) {
  .layout {
    display: block;
    width: min(100% - 34px, 760px);
  }

  .sidebar {
    position: static;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: 28px 0;
  }

  .portrait {
    width: 150px;
    height: 188px;
  }

  .content {
    padding-top: 0;
  }

  .topnav {
    position: static;
    gap: 14px;
  }

  .hero {
    padding-top: 42px;
  }

  .hero h2 {
    font-size: 34px;
  }

  .interests {
    grid-template-columns: 1fr;
  }

  .news span {
    display: block;
    margin-bottom: 2px;
  }
}