/* ============================================================
   BIO PAGE — Dr. Lily Zhou
   Layered on base.css + v3.css. Reuses the same tokens, type
   and accent system so it tracks every palette (sage /
   plum …) automatically via var(--accent).
   ============================================================ */

/* ---------- Back link ---------- */
.bio-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 40px;
  font-size: var(--fs-note);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--slate-mid);
  cursor: pointer;
  transition: color 160ms var(--ease);
}
.bio-back:hover { color: var(--fg-strong); }
.bio-back .arrow { transition: transform 160ms var(--ease);}
.bio-back:hover .arrow { transform: translateX(-3px);}

/* ============================================================
   HERO — portrait + credential stack
   ============================================================ */
.bio-hero {
  padding: 48px 0 96px;
  border-bottom: 1px solid var(--border-soft);
}
.bio-hero-grid {
  display: grid;
  grid-template-columns: minmax(300px, 0.82fr) 1.18fr;
  gap: clamp(40px, 5vw, 88px);
  align-items: stretch;
}

/* Portrait */
.bio-portrait {
  position: relative;
  align-self: start;
}
.bio-portrait image-slot,
.bio-portrait .bio-portrait-img {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 4;
  background:
    radial-gradient(ellipse 86% 70% at 50% 30%, color-mix(in oklab, var(--accent) 10%, transparent) 0%, transparent 72%),
    linear-gradient(180deg, var(--sage-pale) 0%, color-mix(in oklab, var(--sage-pale) 55%, var(--bg)) 100%);
  border-radius: 12px;
  object-fit: cover;
  object-position: top center;
}
.bio-portrait-chip {
  position: absolute;
  left: 14px;
  bottom: 14px;
  font-family: var(--font-sans);
  font-size: 9.5px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--slate-mid);
  background: color-mix(in oklab, var(--bg) 82%, transparent);
  border: 1px dashed color-mix(in oklab, var(--slate-mid) 55%, transparent);
  padding: 7px 12px;
  border-radius: 999px;
  backdrop-filter: blur(6px);
}

/* Credential stack */
.bio-id {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding-top: 6px;
}
.bio-id .eyebrow { margin-bottom: 22px; }
.bio-name {
  font-size: clamp(48px, 5.4vw, 82px);
  line-height: 0.98;
  letter-spacing: -0.02em;
}
.bio-postnom {
  margin-top: 14px;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--slate-mid);
}
.bio-title {
  margin-top: 26px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.bio-role {
  font-family: var(--font-serif);
  font-weight:500;
  font-size: clamp(24px,1.9vw, 26px);
  line-height: 1.2;
  color: var(--fg-strong);
  letter-spacing: -0.005em;
}
.bio-org {
  font-size: var(--fs-sm);
  color: var(--slate-dark);
}

/* The credential that earns the click — UCSF, given display weight */
.bio-credential {
  margin-top: 30px;
  padding-top: 30px;
  border-top: 1px solid var(--border);
  width: 100%;
  max-width: 520px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.bio-credential-label {
  font-family: var(--font-sans);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-deep);
}
.bio-credential-name {
  font-family: var(--font-serif);
  font-weight:500;
  font-size: clamp(28px, 2.9vw, 40px);
  line-height: 1.05;
  letter-spacing: -0.012em;
  color: var(--fg-strong);
}
.bio-credential-name em {
  font-style: italic;
}
.bio-credential-sub {
  margin-top: 2px;
  font-size: var(--fs-note);
  letter-spacing: 0.04em;
  color: var(--slate-mid);
}

.bio-exp {
  margin-top: 24px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--slate-dark);
}
.bio-exp::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

.bio-cta-row { margin-top: 36px; }

/* ============================================================
   HERO-INTEGRATED STATS (compact 3-up inside .bio-id)
   ============================================================ */
.bio-hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-top: 56px;
  padding-top: 40px;
  border-top: 2px solid var(--accent);
}
.bio-hero-stat { display: flex; flex-direction: column; gap: 8px; }
.bio-hero-stat .n {
  font-family: var(--font-serif);
  font-weight:500;
  font-size: clamp(34px, 3.4vw, 46px);
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--fg-strong);
}
.bio-hero-stat .n em { font-style: normal; color: var(--accent-deep); }
.bio-hero-stat--mark .n { color: var(--accent-deep); }
.bio-hero-stat .l {
  font-size: var(--fs-note);
  line-height: 1.5;
  color: var(--slate-mid);
  letter-spacing: 0.02em;
  max-width: 30ch;
}

/* Placement toggle: hero = integrated row, band = standalone strip */

/* ============================================================
   STAT BAND — 20+ / 16 / CAR-T
   ============================================================ */
.bio-stats { padding: 0; }
.bio-stat-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
}
.bio-stat {
  background: var(--bg);
  padding: 30px 8px 32px 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.bio-stat .n {
  font-family: var(--font-serif);
  font-weight:500;
  font-size: clamp(38px, 3.6vw, 52px);
  line-height: 0.92;
  letter-spacing: -0.02em;
  color: var(--fg-strong);
}
.bio-stat .n em {
  font-style: normal;
  color: var(--accent-deep);
}
.bio-stat .l {
  font-size: var(--fs-note);
  line-height: 1.45;
  color: var(--slate-mid);
  letter-spacing: 0.02em;
  max-width: 22ch;
}

/* ============================================================
   BODY — narrative + factual rail
   ============================================================ */
.bio-body { padding: var(--section-py) 0; }
.bio-body-grid {
  display: grid;
  grid-template-columns: 1.55fr 0.95fr;
  gap: clamp(48px, 6vw, 104px);
  align-items: start;
}
.bio-main .eyebrow { margin-bottom: 30px; }

.bio-prose { display: flex; flex-direction: column; gap: 22px; }
.bio-prose p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--slate-dark);
  max-width: var(--measure);
}
.bio-prose .bio-lead {
  font-size: 19px;
  line-height: 1.6;
  color: var(--fg-strong);
  font-weight: 400;
}
.bio-prose em { font-style: italic; }
.bio-prose .doi-link {
  color: var(--accent-deep);
  font-weight: 500;
  border-bottom: 1px solid color-mix(in oklab, var(--accent-deep) 45%, transparent);
  white-space: nowrap;
  transition: border-color 160ms var(--ease);
}
.bio-prose .doi-link:hover { border-color: var(--accent-deep); }

/* Clinical focus chips */
.bio-spec { margin-top: 44px; }
.bio-spec-label {
  display: block;
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--slate-mid);
  margin-bottom: 16px;
}
.bio-chips {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.bio-chips li {
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  font-weight: 400;
  color: var(--sage-ink);
  background: var(--sage-pale);
  padding: 9px 16px;
  border-radius: 999px;
  letter-spacing: 0.01em;
}

/* Factual rail */
.bio-rail {
  position: sticky;
  top: 96px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: 10px;
  padding: 8px;
}
.bio-rail-block {
  padding: 22px 22px 24px;
  border-bottom: 1px solid var(--border-soft);
}
.bio-rail-block:last-child { border-bottom: 0; }
.bio-rail-block h3 {
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-deep);
  margin: 0 0 14px;
}
.bio-rail-block ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.bio-rail-block li {
  font-size: var(--fs-sm);
  line-height: 1.5;
  color: var(--slate-dark);
}
.bio-rail-block li .where {
  display: block;
  font-size: var(--fs-note);
  color: var(--slate-mid);
  margin-top: 1px;
}
.bio-rail-block.solo p {
  font-size: var(--fs-sm);
  line-height: 1.5;
  color: var(--slate-dark);
}
.bio-rail-pub {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 12px;
  font-family: var(--font-sans);
  font-size: var(--fs-note);
  font-weight: 500;
  color: var(--accent-deep);
  cursor: pointer;
}
.bio-rail-pub .arrow { transition: transform 160ms var(--ease);}
.bio-rail-pub:hover .arrow { transform: translateX(4px);}

/* ============================================================
   CLOSING CTA
   ============================================================ */
.bio-cta-sec { padding: 0 0 112px; }
.bio-cta-panel {
  background: var(--sage-pale);
  border-radius: 12px;
  padding: clamp(56px, 6vw, 88px) clamp(32px, 6vw, 96px);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.bio-cta-panel .eyebrow { color: var(--sage-deep); margin-bottom: 22px; }
.bio-cta-panel .eyebrow::before { background: var(--sage-deep); }
.bio-cta-panel h2 {
  color: var(--sage-ink);
  max-width: 16ch;
}
.bio-cta-panel .lede {
  margin-top: 24px;
  max-width: var(--measure);
  color: var(--sage-ink);
  opacity: 0.82;
}
.bio-cta-panel .btn { margin-top: 36px; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1000px) {
  .bio-hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .bio-portrait { max-width: 360px; }
  .bio-body-grid { grid-template-columns: 1fr; gap: 56px; }
  .bio-rail { position: static; }
}
@media (max-width: 640px) {
  .bio-hero { padding: 32px 0 64px; }
  .bio-hero-stats { gap: 20px; }
  .bio-body { padding: 64px 0; }
  .bio-stat-band { grid-template-columns: 1fr; gap: 1px; }
  .bio-stat { padding: 30px 0; }
  .bio-prose p, .bio-prose .bio-lead { font-size: 16px; }
}

/* ============================================================
   HERO POSITIONING LINE
   ============================================================ */
.bio-positioning {
  margin-top: 24px;
  max-width: var(--measure);
  font-size: 16px;
  line-height: 1.65;
  color: var(--slate-dark);
}

/* ============================================================
   BODY SUB-SECTIONS — CAR-T leadership / research / team
   ============================================================ */
.bio-section {
  margin-top: 52px;
  padding-top: 44px;
  border-top: 1px solid var(--border);
}
.bio-section .bio-h {
  font-family: var(--font-serif);
  font-weight:500;
  font-size: clamp(24px, 2.4vw, 32px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--fg-strong);
  margin: 0 0 20px;
}
.bio-section-lead {
  font-size: 17px;
  line-height: 1.7;
  color: var(--slate-dark);
  max-width: var(--measure);
}
.bio-section-lead em { font-style: italic; }

/* Publication link + citation */
.bio-pub-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--accent-deep);
  cursor: pointer;
}
.bio-pub-link .arrow { transition: transform 160ms var(--ease);}
.bio-pub-link:hover .arrow { transform: translateX(4px);}
.bio-pub-meta {
  display: block;
  margin-top: 10px;
  font-family: var(--font-sans);
  font-size: var(--fs-note);
  letter-spacing: 0.02em;
  color: var(--slate-mid);
}

/* Published-name note. Added 14 Aug 2026: her work is indexed under the
   romanisation "Lili Zhou" while the site uses her English name, so a reader
   following the Scholar link would otherwise land on what looks like a
   different person. Sized as body-adjacent, not fine print — it resolves a
   question rather than qualifying a claim. */
.bio-pub-note {
  margin: 14px 0 0;
  max-width: 62ch;
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--slate-dark);
}
.bio-pub-note a {
  color: var(--accent-deep);
  font-weight: 500;
  text-decoration: none;
  border-bottom: 1px solid color-mix(in oklab, var(--accent-deep) 38%, transparent);
  transition: border-color 160ms var(--ease);
}
.bio-pub-note a:hover { border-color: var(--accent-deep); opacity: 1; }

/* Guard line — held up as substance, never a footnote */
.bio-guard {
  margin-top: 26px;
  max-width: var(--measure);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 22px 26px;
}
.bio-guard-label {
  display: block;
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--slate-mid);
  margin-bottom: 10px;
}
.bio-guard p {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--slate-dark);
}

/* Team teaser link */
.bio-teaser-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--accent-deep);
  cursor: pointer;
}
.bio-teaser-link .arrow { transition: transform 160ms var(--ease);}
.bio-teaser-link:hover .arrow { transform: translateX(4px);}

/* Publication list — dr-lily-zhou only. bio.css is shared with medical-team.html,
   which has no .bio-pub-list, so these rules are inert there. */
.bio-pub-list {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  max-width: 68ch;
  border-top: 1px solid var(--rule, rgba(0,0,0,.10));
}
.bio-pub-list li {
  padding: 14px 0;
  border-bottom: 1px solid var(--rule, rgba(0,0,0,.10));
}
.bio-pub-list a {
  display: block;
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  line-height: 1.55;
  color: var(--slate-dark);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.bio-pub-list a:hover,
.bio-pub-list a:focus-visible { color: var(--accent-deep); border-bottom-color: currentColor; }
.bio-pub-cite {
  display: block;
  margin-top: 6px;
  font-family: var(--font-sans);
  font-size: var(--fs-note);
  letter-spacing: 0.02em;
  color: var(--slate-mid);
}
@media (max-width: 480px) {
  .bio-pub-list li { padding: 12px 0; }
}