:root {
  --paper: #f2f4f6;
  --card: #fdfeff;
  --ink: #161b22;
  --ink-soft: #454f5c;
  --ink-faint: #7c8794;
  --line: rgba(22, 27, 34, 0.13);
  --accent: #1e4b8f;
  --accent-ink: #ffffff;
  --accent-soft: rgba(30, 75, 143, 0.11);
  --warm: #9c6b1f;
  --warm-soft: rgba(156, 107, 31, 0.13);
  --shadow: 0 1px 2px rgba(22, 27, 34, 0.05), 0 8px 24px -12px rgba(22, 27, 34, 0.2);
  --sans: -apple-system, "SF Pro Display", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, ui-serif, serif;
  --mono: "SF Mono", "Berkeley Mono", Menlo, Consolas, "Liberation Mono", ui-monospace, monospace;
  --navh: 52px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0d1420;
    --card: #141d2b;
    --ink: #e7ecf2;
    --ink-soft: #b6c0cc;
    --ink-faint: #7e8a99;
    --line: rgba(231, 236, 242, 0.13);
    --accent: #6c9ef0;
    --accent-ink: #071120;
    --accent-soft: rgba(108, 158, 240, 0.16);
    --warm: #d9a44e;
    --warm-soft: rgba(217, 164, 78, 0.16);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.25), 0 8px 28px -12px rgba(0, 0, 0, 0.6);
  }
}
:root[data-theme="dark"] {
  --paper: #0d1420;
  --card: #141d2b;
  --ink: #e7ecf2;
  --ink-soft: #b6c0cc;
  --ink-faint: #7e8a99;
  --line: rgba(231, 236, 242, 0.13);
  --accent: #6c9ef0;
  --accent-ink: #071120;
  --accent-soft: rgba(108, 158, 240, 0.16);
  --warm: #d9a44e;
  --warm-soft: rgba(217, 164, 78, 0.16);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.25), 0 8px 28px -12px rgba(0, 0, 0, 0.6);
}
:root[data-theme="light"] {
  --paper: #f2f4f6;
  --card: #fdfeff;
  --ink: #161b22;
  --ink-soft: #454f5c;
  --ink-faint: #7c8794;
  --line: rgba(22, 27, 34, 0.13);
  --accent: #1e4b8f;
  --accent-ink: #ffffff;
  --accent-soft: rgba(30, 75, 143, 0.11);
  --warm: #9c6b1f;
  --warm-soft: rgba(156, 107, 31, 0.13);
  --shadow: 0 1px 2px rgba(22, 27, 34, 0.05), 0 8px 24px -12px rgba(22, 27, 34, 0.2);
}

* { box-sizing: border-box; }
html { background: var(--paper); scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration-color: var(--accent-soft); text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--accent); }
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }
h1, h2, h3 { font-family: var(--sans); font-weight: 800; letter-spacing: -0.01em; text-wrap: balance; margin: 0; }
p { margin: 0 0 0.9em; }
p:last-child { margin-bottom: 0; }

.shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 28px;
  display: grid;
  grid-template-columns: 288px minmax(0, 1fr);
  gap: 56px;
  align-items: start;
}

/* ---------- Top nav ---------- */
.topnav {
  position: sticky;
  top: 0;
  z-index: 30;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}
.topnav-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 28px;
  min-height: var(--navh);
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
}
.topnav a {
  font-family: var(--sans);
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.005em;
  text-transform: none;
  color: var(--ink-faint);
  text-decoration: none;
  cursor: pointer;
  padding: 6px 0;
  transition: color 0.15s ease;
}
.topnav a:hover { color: var(--accent); }

/* ---------- Sidebar ---------- */
aside {
  position: sticky;
  top: var(--navh);
  padding: 44px 0 44px;
  display: flex;
  flex-direction: column;
  gap: 26px;
  max-height: calc(100vh - var(--navh));
  overflow-y: auto;
  scrollbar-width: none;
}
aside::-webkit-scrollbar { display: none; }

.avatar {
  width: 252px;
  height: 252px;
  border-radius: 50%;
  object-fit: cover;
  display: block;
  margin: 0;
  border: 4px solid var(--paper);
  box-shadow: var(--shadow);
  background: var(--card);
}

.id-block h1 {
  font-size: 1.7rem;
  line-height: 1.12;
}
.id-block .affil {
  font-family: var(--sans);
  font-size: 0.86rem;
  color: var(--ink-soft);
  margin-top: 4px;
}

.linklist { display: flex; flex-direction: column; gap: 3px; }
.linklist a {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 8px;
  margin: 0 -8px;
  border-radius: 8px;
  color: var(--ink-soft);
  text-decoration: none;
  font-family: var(--sans);
  font-size: 0.87rem;
  transition: background 0.15s ease, color 0.15s ease;
}
.linklist a:hover { background: var(--accent-soft); color: var(--ink); }
.linklist svg { width: 16px; height: 16px; flex: none; stroke: currentColor; opacity: 0.85; }


/* ---------- Main content ---------- */
main { padding: 44px 0 80px; min-width: 0; }

section { scroll-margin-top: calc(var(--navh) + 16px); }
section + section { margin-top: 52px; }

.sec-head { display: flex; align-items: baseline; gap: 14px; margin-bottom: 20px; }
.sec-head h2 {
  font-weight: 700;
  font-size: 1.35rem;
  text-transform: none;
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.sec-head .rule { flex: 1; height: 1px; background: var(--line); }

.bio { max-width: 66ch; font-size: 1.03rem; }
.bio a { text-decoration: underline; }

.honors-grid { display: grid; gap: 10px; }
.honor {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 16px;
  padding: 13px 0;
  font-size: 0.92rem;
}
.honor time { font-family: var(--serif); font-size: 0.74rem; color: var(--ink-faint); padding-top: 2px; }
.honor .h-thumb {
  width: 96px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.honor .h-thumb img { max-width: 100%; max-height: 100%; object-fit: contain; display: block; }
.honor .h-title { font-family: var(--sans); font-weight: 700; font-size: 0.93rem; }
.honor .h-org { color: var(--ink-faint); font-size: 0.82rem; font-family: var(--sans); }
.honor .h-desc { margin-top: 3px; color: var(--ink-soft); font-size: 0.88rem; }

.subgroup { margin-bottom: 28px; }
.subgroup:last-child { margin-bottom: 0; }
.subgroup h3 {
  font-size: 1.1rem;
  text-transform: none;
  letter-spacing: 0.01em;
  color: var(--warm);
  font-weight: 700;
  margin-bottom: 14px;
}

#research { counter-reset: pub; }
ol.pubs { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 14px; }
ol.pubs li.pub-error { padding-left: 0; counter-increment: none; color: var(--ink-faint); font-family: var(--sans); font-size: 0.85rem; }
ol.pubs li.pub-error::before { content: none; }
ol.pubs li {
  counter-increment: pub;
  position: relative;
  padding-left: 30px;
  font-size: 0.93rem;
  line-height: 1.55;
}
ol.pubs li::before {
  content: "[" counter(pub) "]";
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--serif);
  font-size: 0.76rem;
  color: var(--ink-faint);
}
ol.pubs .me { font-weight: 700; }
ol.pubs .venue { font-style: italic; color: var(--ink-soft); }
ol.pubs .meta { display: inline-flex; gap: 10px; margin-left: 2px; flex-wrap: wrap; }
ol.pubs .meta a { font-family: var(--mono); font-size: 0.74rem; }
.badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 2px 7px;
  border-radius: 20px;
  background: var(--warm-soft);
  color: var(--warm);
  font-weight: 700;
  margin-left: 6px;
  vertical-align: 1px;
  text-decoration: none;
}
a.badge:hover { background: var(--warm); color: var(--accent-ink); }

.talklist { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 13px; }
.talklist li { font-size: 0.93rem; line-height: 1.55; padding-left: 16px; border-left: 2px solid var(--line); }
.talklist li.upcoming { border-left-color: var(--accent); }
.talklist .t-venue { color: var(--ink-faint); font-family: var(--sans); font-size: 0.82rem; display: block; margin-top: 2px; }
.talklist .t-link { display: inline-block; margin-top: 5px; font-family: var(--mono); font-size: 0.76rem; }

.gh {
  display: inline-flex;
  align-items: flex-start;
  gap: 6px;
  margin-top: 4px;
  font-family: var(--mono);
  font-size: 0.78rem;
  text-decoration: none;
  overflow-wrap: anywhere;
  word-break: break-word;
}
.gh svg { width: 14px; height: 14px; stroke: currentColor; margin-top: 2px; }

table.teach { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
table.teach th {
  text-align: left;
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-faint);
  font-weight: 600;
  padding: 0 14px 10px 0;
  border-bottom: 1px solid var(--line);
}
table.teach td {
  padding: 11px 14px 11px 0;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
table.teach tr:last-child td { border-bottom: none; }
table.teach .term { font-family: var(--serif); font-size: 0.78rem; color: var(--ink-faint); white-space: nowrap; font-variant-numeric: tabular-nums; }
table.teach .course { font-family: var(--sans); font-weight: 700; font-size: 0.87rem; }
table.teach .role { color: var(--ink-soft); }
.tbl-wrap { overflow-x: auto; }

footer {
  border-top: 1px solid var(--line);
  padding: 26px 0 8px;
  margin-top: 60px;
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--ink-faint);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

@media (max-width: 900px) {
  .shell { grid-template-columns: 1fr; gap: 0; padding: 0 20px; }
  aside {
    position: relative;
    top: auto;
    max-height: none;
    overflow: visible;
    padding: 32px 0 20px;
    border-bottom: 1px solid var(--line);
  }
  .topnav-inner { padding: 10px 20px; gap: 14px; }
  main { padding: 32px 0 60px; }
  .honor { grid-template-columns: 1fr; gap: 3px; }
}

@media (prefers-reduced-motion: reduce) {
  .linklist a { transition: none; }
}