:root {
  --blue: #0b5fa5;
  --blue-dark: #083f72;
  --blue-soft: #eef6fc;
  --blue-pale: #f7fbfe;
  --ink: #14273a;
  --muted: #607589;
  --line: #bfd4e6;
  --line-soft: #dce8f2;
  --white: #ffffff;
  --text: 11px;
  --small: 10px;
  --max: 1240px;
  --sidebar: 250px;
  --sans: Arial, Helvetica, "Segoe UI", sans-serif;
  --mono: Consolas, "Courier New", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--text);
  line-height: 1.58;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body.modal-open { overflow: hidden; }
button, input, textarea, select { font: inherit; }
a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-dark); text-decoration: underline; text-underline-offset: 2px; }

.skip-link {
  position: fixed;
  top: 6px;
  left: 6px;
  z-index: 1000;
  transform: translateY(-160%);
  background: var(--blue);
  color: #fff;
  padding: 7px 9px;
  font-family: var(--mono);
  font-size: var(--small);
}
.skip-link:focus { transform: translateY(0); }

.masthead {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(10px);
}
.masthead__inner {
  max-width: var(--max);
  margin: 0 auto;
  min-height: 48px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  color: var(--blue-dark);
  font-family: var(--mono);
  font-size: var(--text);
  font-weight: 700;
  letter-spacing: .02em;
  white-space: nowrap;
}
.brand:hover { text-decoration: none; }
.brand-prompt { color: var(--blue); }
.brand-cursor { animation: blink 1s steps(1,end) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav::-webkit-scrollbar { display: none; }
.nav a {
  flex: 0 0 auto;
  padding: 16px 0 13px;
  border-bottom: 2px solid transparent;
  color: #52677a;
  font-size: var(--small);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
}
.nav a:hover, .nav a.active {
  color: var(--blue-dark);
  border-bottom-color: var(--blue);
  text-decoration: none;
}

.page-shell {
  max-width: var(--max);
  margin: 0 auto;
  padding: 30px 24px 54px;
  display: grid;
  grid-template-columns: var(--sidebar) minmax(0, 1fr);
  gap: 48px;
}
.profile-card {
  position: sticky;
  top: 78px;
  align-self: start;
  min-width: 0;
}
.portrait-frame {
  width: 150px;
  margin-bottom: 14px;
  border: 1px solid var(--line);
  background: var(--blue-pale);
  padding: 4px;
}
.avatar-photo {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: center 18%;
  filter: saturate(.82) contrast(1.02);
}
.identity-code,
.hero-overline,
.kicker,
.metric-label,
.eyebrow,
.stage-label,
.modal-kicker,
.footer-code,
.you-marker {
  font-family: var(--mono);
  font-size: var(--small);
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--blue);
}
.identity-block { margin-bottom: 12px; }
.identity-block h2 {
  margin: 3px 0 1px;
  color: var(--blue-dark);
  font-size: var(--text);
  line-height: 1.35;
  text-transform: uppercase;
  letter-spacing: .05em;
}
.formal-name,
.role,
.institution-block,
.profile-tagline,
.profile-links,
.lineage-trigger {
  font-size: var(--text);
}
.formal-name { color: var(--muted); }
.role { margin: 7px 0 0; font-weight: 700; }
.institution-block {
  padding: 10px 0;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  color: var(--muted);
}
.institution-block strong,
.institution-block span { display: block; }
.institution-block strong { color: var(--ink); margin-bottom: 3px; }
.profile-tagline { margin: 12px 0; color: #435b70; }
.profile-links {
  display: grid;
  gap: 4px;
  margin-bottom: 12px;
}
.profile-links a {
  display: flex;
  align-items: center;
  gap: 7px;
  min-height: 29px;
  padding: 5px 7px;
  border: 1px solid var(--line-soft);
  background: var(--white);
  color: var(--blue-dark);
}
.profile-links a:hover {
  background: var(--blue-soft);
  border-color: var(--line);
  text-decoration: none;
}
.mini-icon {
  flex: 0 0 27px;
  font-family: var(--mono);
  font-size: var(--small);
  font-weight: 700;
  color: var(--blue);
}
.link-icon { width: 13px; height: 13px; fill: var(--blue); flex: 0 0 13px; }
.lineage-trigger {
  width: 100%;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 8px;
  padding: 8px 9px;
  border: 1px solid var(--blue);
  background: var(--blue-pale);
  color: var(--blue-dark);
  cursor: pointer;
  text-align: left;
}
.lineage-trigger span:first-child { font-family: var(--mono); font-size: var(--small); color: var(--blue); }
.lineage-trigger strong { font-size: var(--small); text-transform: uppercase; letter-spacing: .04em; }
.lineage-trigger:hover, .lineage-trigger:focus-visible { background: var(--blue-soft); outline: 2px solid rgba(11,95,165,.12); }

.content {
  min-width: 0;
  max-width: 860px;
}
.content h1,
.content h2,
.content h3,
.content h4 {
  font-family: var(--sans);
  font-size: var(--text);
  line-height: 1.45;
  color: var(--blue-dark);
}
.content h1 {
  margin: 0 0 13px;
  padding: 8px 10px;
  border-left: 3px solid var(--blue);
  background: var(--blue-pale);
  text-transform: uppercase;
  letter-spacing: .05em;
}
.content h2 {
  margin: 28px 0 10px;
  padding-bottom: 5px;
  border-bottom: 1px solid var(--line);
  text-transform: uppercase;
  letter-spacing: .05em;
}
.content h3 { margin: 18px 0 6px; font-weight: 700; }
.content p { margin: 0 0 10px; }
.content ul, .content ol { margin: 8px 0 12px; padding-left: 18px; }
.content li { margin: 3px 0; }
.content hr { border: 0; border-top: 1px solid var(--line); margin: 22px 0; }
.content blockquote {
  margin: 12px 0;
  padding: 9px 11px;
  border-left: 3px solid var(--blue);
  background: var(--blue-pale);
  color: #3e566b;
}
.kicker { margin-bottom: 7px; }
.lead, .hero-lead { font-size: var(--text); color: #364f65; }
.hero-block {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
  margin-bottom: 14px;
}
.hero-block h1 {
  background: transparent;
  border-left: 0;
  padding: 0;
  margin: 4px 0 8px;
  font-size: var(--text);
}

.metric-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--line);
  margin: 14px 0;
}
.metric-strip > div { padding: 9px 10px; border-right: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }
.metric-strip > div:nth-child(2n) { border-right: 0; }
.metric-strip > div:nth-last-child(-n+2) { border-bottom: 0; }
.metric-strip strong { display: block; margin-top: 2px; font-size: var(--text); }

.meta-row, .paper-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin: 12px 0 16px;
}
.tag, .paper-tags span, .badge {
  display: inline-block;
  border: 1px solid var(--line);
  background: var(--blue-pale);
  color: var(--blue-dark);
  padding: 3px 6px;
  font-size: var(--small);
  line-height: 1.2;
}
.badge { font-family: var(--mono); font-weight: 700; margin-right: 4px; }
.badge.plan { background: var(--blue); color: #fff; border-color: var(--blue); }

.research-grid, .phase-grid, .expertise-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 12px 0 18px;
}
.card {
  border: 1px solid var(--line-soft);
  background: #fff;
  padding: 10px;
}
.card.premium:hover { border-color: var(--blue); background: var(--blue-pale); }
.card h3 { margin: 3px 0 4px; }
.card p { margin: 0; color: #536a7e; }

.signature-box,
.notice {
  border: 1px solid var(--line);
  border-left: 3px solid var(--blue);
  background: var(--blue-pale);
  padding: 10px 11px;
  margin: 13px 0;
}
.signature-main { font-family: var(--mono); color: var(--blue-dark); font-size: var(--small); font-weight: 700; margin-bottom: 4px; }
.notice.neutral { background: #fbfdff; }

.stack-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--line);
  margin: 12px 0 18px;
}
.stack-grid > div { padding: 8px 9px; border-right: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }
.stack-grid > div:nth-child(2n) { border-right: 0; }
.stack-grid span { display: block; color: var(--blue); font-family: var(--mono); font-size: var(--small); text-transform: uppercase; }
.stack-grid strong { font-size: var(--text); }

.flowline {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 5px;
  margin: 12px 0 16px;
  padding: 8px;
  border: 1px solid var(--line);
  background: var(--blue-pale);
  font-family: var(--mono);
  font-size: var(--small);
}
.flowline span { padding: 3px 5px; border: 1px solid var(--line); background: #fff; }
.flowline b { color: var(--blue); }

.sequence {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border: 1px solid var(--line);
  margin: 12px 0 16px;
}
.sequence div { padding: 7px 5px; border-right: 1px solid var(--line-soft); text-align: center; }
.sequence div:last-child { border-right: 0; }
.sequence b, .sequence span { display: block; font-size: var(--small); }
.sequence b { font-family: var(--mono); color: var(--blue); }

.timeline { border-left: 1px solid var(--line); margin: 12px 0 18px 5px; padding-left: 14px; }
.timeline-item { position: relative; margin-bottom: 12px; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: -18px;
  top: .45em;
  width: 7px;
  height: 7px;
  background: var(--blue);
}
.timeline-item .year { font-family: var(--mono); font-size: var(--small); color: var(--blue); font-weight: 700; }

.pub { margin: 0 0 12px; }
.pub.featured {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 8px;
  padding: 10px 0;
  margin: 0;
  border-bottom: 1px solid var(--line-soft);
}
.pub.featured:first-of-type { border-top: 1px solid var(--line-soft); }
.pub-no { font-family: var(--mono); font-size: var(--small); color: var(--blue); }
.pub-title { font-size: var(--text); font-weight: 700; }
.pub-meta, .pub-links { font-size: var(--small); color: var(--muted); margin-top: 3px; }

.table-wrap { overflow-x: auto; margin: 10px 0 16px; }
table { width: 100%; border-collapse: collapse; font-size: var(--text); }
th, td { padding: 6px 7px; border-bottom: 1px solid var(--line-soft); text-align: left; vertical-align: top; }
th { background: var(--blue-pale); color: var(--blue-dark); font-size: var(--small); text-transform: uppercase; letter-spacing: .04em; }

.action-row { display: flex; flex-wrap: wrap; gap: 6px; margin: 12px 0; }
.ui-button {
  border: 1px solid var(--blue);
  background: #fff;
  color: var(--blue-dark);
  padding: 6px 8px;
  font-family: var(--mono);
  font-size: var(--small);
  cursor: pointer;
}
.ui-button:hover { background: var(--blue-soft); }

.footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 16px 24px 28px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 18px;
  color: var(--muted);
  font-size: var(--small);
}

.modal[aria-hidden="true"] { display: none; }
.modal[aria-hidden="false"] { display: block; }
.modal { position: fixed; inset: 0; z-index: 100; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(3,31,56,.62); }
.modal-panel {
  position: relative;
  z-index: 1;
  width: min(980px, calc(100vw - 32px));
  max-height: calc(100vh - 32px);
  overflow: auto;
  margin: 16px auto;
  background: #fff;
  border: 1px solid var(--blue);
  box-shadow: 0 20px 60px rgba(0,38,72,.22);
  outline: none;
}
.modal-head {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
  padding: 11px 12px;
  border-bottom: 1px solid var(--line);
  background: #fff;
}
.modal-head h2 { margin: 2px 0 0; color: var(--blue-dark); font-size: var(--text); text-transform: uppercase; letter-spacing: .05em; }
.modal-close {
  border: 1px solid var(--blue);
  background: #fff;
  color: var(--blue-dark);
  padding: 5px 7px;
  font-family: var(--mono);
  font-size: var(--small);
  cursor: pointer;
}
.modal-close:hover { background: var(--blue-soft); }
.modal-note { margin: 0; padding: 9px 12px; background: var(--blue-pale); border-bottom: 1px solid var(--line-soft); color: #4f667a; font-size: var(--small); }
.lineage-flow { padding: 12px; }
.lineage-stage { border: 1px solid var(--line); background: #fff; padding: 10px; }
.stage-label { margin-bottom: 7px; font-weight: 700; }
.lineage-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 6px; }
.lineage-grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.lineage-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.lineage-grid article,
.lineage-split article {
  border: 1px solid var(--line-soft);
  background: var(--blue-pale);
  padding: 7px;
}
.lineage-grid strong,
.lineage-grid span,
.lineage-split strong,
.lineage-split span { display: block; font-size: var(--small); }
.lineage-grid strong, .lineage-split strong { color: var(--blue-dark); margin-bottom: 2px; }
.lineage-grid span, .lineage-split span { color: #536a7e; }
.flow-arrow { text-align: center; color: var(--blue); font-family: var(--mono); font-size: var(--text); padding: 3px 0; }
.lineage-split { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.lineage-split h3 { margin: 0 0 6px; font-size: var(--small); color: var(--blue-dark); text-transform: uppercase; letter-spacing: .04em; }
.lineage-split article + article { margin-top: 5px; }
.direct-stage { background: #fbfdff; }
.current-stage { border-color: var(--blue); background: var(--blue-pale); }
.current-position {
  margin-bottom: 8px;
  padding: 8px 9px;
  border: 1px solid var(--blue);
  background: #fff;
}
.current-position strong, .current-position span { display: block; font-size: var(--small); }
.current-position strong { margin-top: 3px; color: var(--blue-dark); }
.next-grid article { background: #fff; }

:focus-visible { outline: 2px solid rgba(11,95,165,.35); outline-offset: 2px; }

@media (max-width: 860px) {
  .masthead__inner { align-items: flex-start; flex-direction: column; gap: 0; padding-top: 10px; }
  .nav { width: 100%; }
  .page-shell { grid-template-columns: 1fr; gap: 24px; padding-top: 22px; }
  .profile-card { position: static; display: grid; grid-template-columns: 120px 1fr; gap: 12px 16px; }
  .portrait-frame { width: 120px; grid-row: 1 / span 4; }
  .identity-block, .institution-block, .profile-tagline, .profile-links, .lineage-trigger { grid-column: 2; }
  .profile-links { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .lineage-grid, .lineage-grid.three { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sequence { grid-template-columns: 1fr; }
  .sequence div { border-right: 0; border-bottom: 1px solid var(--line-soft); text-align: left; }
  .sequence div:last-child { border-bottom: 0; }
}

@media (max-width: 560px) {
  .masthead__inner, .page-shell, .footer { padding-left: 14px; padding-right: 14px; }
  .page-shell { padding-top: 18px; }
  .profile-card { display: block; }
  .portrait-frame { width: 118px; }
  .identity-block, .institution-block, .profile-tagline, .profile-links, .lineage-trigger { margin-top: 10px; }
  .profile-links, .metric-strip, .research-grid, .phase-grid, .expertise-grid, .stack-grid, .lineage-grid, .lineage-grid.three, .lineage-grid.two, .lineage-split { grid-template-columns: 1fr; }
  .metric-strip > div, .stack-grid > div { border-right: 0; }
  .metric-strip > div:nth-last-child(-n+2) { border-bottom: 1px solid var(--line-soft); }
  .metric-strip > div:last-child { border-bottom: 0; }
  .footer { flex-direction: column; gap: 5px; }
  .modal-panel { width: calc(100vw - 16px); max-height: calc(100vh - 16px); margin: 8px auto; }
}