:root {
  --bg: #ffffff;
  --fg: #1d1d1f;
  --muted: #6b6b72;
  --line: #e6e6ea;
  --accent: #8c1d2b;
  --card: #fafafb;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121214;
    --fg: #ececf0;
    --muted: #9a9aa3;
    --line: #2a2a30;
    --accent: #e0707e;
    --card: #1a1a1e;
  }
  .affiliations img { background: #fff; border-radius: 6px; padding: 4px; }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 "Inter", "Noto Sans JP", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { max-width: 960px; margin: 0 auto; padding: 0 20px; }

.topbar {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 56px; gap: 16px; }
.brand { color: var(--fg); font-weight: 600; }
.topbar nav { display: flex; gap: 18px; font-size: 14px; overflow-x: auto; }
.topbar nav a { color: var(--muted); white-space: nowrap; }
.topbar nav a:hover { color: var(--fg); text-decoration: none; }

.hero { display: grid; grid-template-columns: 220px 1fr; gap: 40px; padding: 56px 0 32px; align-items: start; }
.avatar { width: 220px; height: auto; border-radius: 12px; object-fit: cover; }
h1 { font-size: 34px; line-height: 1.2; margin: 0 0 6px; letter-spacing: -0.01em; }
h1 .ja { display: block; font-size: 18px; font-weight: 500; color: var(--muted); margin-top: 4px; }
.role { color: var(--muted); margin: 0 0 16px; font-weight: 500; }
.hero p { margin: 0 0 12px; }
.interests { padding: 12px 14px; background: var(--card); border-left: 3px solid var(--accent); border-radius: 4px; }
.links { list-style: none; padding: 0; margin: 16px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.links a { display: inline-block; padding: 5px 14px; border: 1px solid var(--line); border-radius: 999px; font-size: 14px; font-weight: 500; }
.links a:hover { border-color: var(--accent); text-decoration: none; }

.affiliations { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; padding: 8px 0 24px; border-bottom: 1px solid var(--line); }
.affiliations a { display: flex; flex-direction: column; align-items: center; text-align: center; color: var(--fg); gap: 4px; }
.affiliations a:hover { text-decoration: none; }
.affiliations img { height: 56px; width: 100%; object-fit: contain; }
.affiliations span { font-size: 14px; font-weight: 600; margin-top: 6px; }
.affiliations small { font-size: 12px; color: var(--muted); }

section { padding: 32px 0 8px; }
h2 { font-size: 22px; margin: 0 0 18px; letter-spacing: -0.01em; }

.news { list-style: none; padding: 0; margin: 0; }
.news li { display: grid; grid-template-columns: 96px 1fr; gap: 12px; padding: 8px 0; border-bottom: 1px dashed var(--line); }
.news time, .timeline time { color: var(--muted); font-size: 14px; font-variant-numeric: tabular-nums; padding-top: 1px; }

.pub { display: grid; grid-template-columns: 380px 1fr; align-items: start; gap: 24px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.pub:last-child { border-bottom: 0; }
.pub .fig { display: block; }
.pub img { display: block; width: 100%; height: auto; border-radius: 8px; border: 1px solid var(--line); background: #fff; }
.pub h3 { font-size: 16.5px; line-height: 1.4; margin: 0 0 6px; }
.pub h3 a { color: var(--fg); }
.pub h3 a:hover { color: var(--accent); }
.authors { margin: 0 0 4px; font-size: 14.5px; color: var(--muted); }
.authors b { color: var(--fg); }
.note { font-size: 13px; }
.venue { margin: 0 0 8px; font-size: 14.5px; font-style: italic; }
.tags { margin: 0; display: flex; gap: 8px; flex-wrap: wrap; }
.tags a { font-size: 13px; padding: 2px 10px; border: 1px solid var(--line); border-radius: 6px; }
.tags a:hover { border-color: var(--accent); text-decoration: none; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.timeline { list-style: none; padding: 0; margin: 0; }
.timeline li { display: grid; grid-template-columns: 120px 1fr; gap: 12px; padding: 10px 0; border-bottom: 1px dashed var(--line); }
.muted { color: var(--muted); font-size: 14px; }

.contact { display: grid; grid-template-columns: 90px 1fr; gap: 6px 16px; margin: 0; }
.contact dt { color: var(--muted); }
.contact dd { margin: 0; }

.footer { display: flex; justify-content: space-between; padding: 40px 20px; color: var(--muted); font-size: 13px; border-top: 1px solid var(--line); margin-top: 40px; }

@media (max-width: 760px) {
  .topbar nav { display: none; }
  .hero { grid-template-columns: 1fr; gap: 20px; padding-top: 32px; }
  .avatar { width: 160px; }
  .affiliations { grid-template-columns: repeat(2, 1fr); }
  .pub { grid-template-columns: 1fr; gap: 12px; }
  .pub img { width: 100%; }
  .two-col { grid-template-columns: 1fr; gap: 0; }
  .timeline li { grid-template-columns: 1fr; gap: 2px; }
  .news li { grid-template-columns: 1fr; gap: 2px; }
  .contact { grid-template-columns: 1fr; }
  .contact dd { margin-bottom: 8px; }
  .footer { flex-direction: column; gap: 4px; }
}