/* ─────────────────────────────────────────────────────────────
   Portfolio — scoped stylesheet.
   ───────────────────────────────────────────────────────────── */

@import url('https://fonts.googleapis.com/css2?family=EB+Garamond:ital,wght@0,400;0,500;0,600;1,400;1,500&family=Inter:wght@300;400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

#portfolio-root {
  --ink: #0d0e12;
  --ink2: #14161c;
  --ink3: #1a1d25;
  --line: #2a2e3a;
  --line2: #3a3f4f;
  --fg: #f1efe8;
  --mute: #c1c4cf;
  --dim: #8a8e9c;
  --research: #8bb3c7;
  --industry: #c08668;
  --overlap: #c8b9a3;
  --accent: #d8c68f;

  /* Semantic border / surface tokens that flip with theme */
  --hairline:          rgba(255,255,255,0.08);
  --hairline-faint:    rgba(255,255,255,0.05);
  --card-border:       rgba(255,255,255,0.10);
  --code-bg:           rgba(255,255,255,0.04);
  --grid-line:         rgba(255,255,255,0.02);
  --toggle-active:     rgba(232,230,223,0.10);
  --pill-pinned-bg:    rgba(255,255,255,0.05);
  --pill-pinned-bdr:   rgba(255,255,255,0.15);

  /* Note: --serif intentionally points to the sans stack — body
     text reads more cleanly in sans across the board. Headings
     and titles use --display (EB Garamond) via dedicated rules. */
  --serif:   Inter, system-ui, sans-serif;
  --sans:    Inter, system-ui, sans-serif;
  --display: "EB Garamond", Georgia, serif;
  --mono:    "JetBrains Mono", ui-monospace, monospace;

  color: var(--fg);
  font-family: var(--sans);
  font-size: 16.5px;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "kern";
  line-height: 1.55;
}

/* ── Light mode overrides ────────────────────────────────── */
#portfolio-root[data-theme="light"] {
  --ink: #f5f4ef;
  --ink2: #eeecea;
  --ink3: #e8e5de;
  --line: #d4cfbb;
  --line2: #c0bbb0;
  --fg: #1c1e26;
  --mute: #5a5e6e;
  --dim: #8a8e9e;
  --research: #3d6e83;
  --industry: #7a4030;
  --overlap: #7a6c58;
  --accent: #8a7448;

  --hairline:          rgba(0,0,0,0.09);
  --hairline-faint:    rgba(0,0,0,0.06);
  --card-border:       rgba(0,0,0,0.12);
  --code-bg:           rgba(0,0,0,0.05);
  --grid-line:         rgba(0,0,0,0.04);
  --toggle-active:     rgba(0,0,0,0.08);
  --pill-pinned-bg:    rgba(0,0,0,0.05);
  --pill-pinned-bdr:   rgba(0,0,0,0.12);

}

/* Venn SVG text / rect fix in light mode */
#portfolio-root[data-theme="light"] #pf-venn-svg text { fill: var(--fg); }
#portfolio-root[data-theme="light"] #pf-venn-svg rect { fill: var(--ink2); stroke: var(--overlap); }

/* Venn circles in light mode — the SVG <defs> gradients use the
   dark-theme hexes at low alpha, which wash out on the beige
   background. Override stroke color/width and add a subtle fill
   via filter so the circles actually read. */
#portfolio-root[data-theme="light"] #pf-venn-T { stroke: var(--research); stroke-width: 1.75; }
#portfolio-root[data-theme="light"] #pf-venn-L { stroke: var(--overlap);  stroke-width: 1.75; }
#portfolio-root[data-theme="light"] #pf-venn-R { stroke: var(--industry); stroke-width: 1.75; }
#portfolio-root[data-theme="light"] #pf-venn-svg {
  filter: contrast(1.15) saturate(1.25);
}
#portfolio-root[data-theme="light"] .pf-venn__svg.side-T #pf-venn-T,
#portfolio-root[data-theme="light"] .pf-venn__svg.side-L #pf-venn-L,
#portfolio-root[data-theme="light"] .pf-venn__svg.side-R #pf-venn-R { stroke-width: 2.25; }

/* Body carries the gradient so the canvas can sit in front of it */
body:has(#portfolio-root) {
  background:
    radial-gradient(ellipse 80% 60% at 15% 25%, rgba(20,24,36,0.9) 0%, transparent 65%),
    radial-gradient(ellipse 70% 50% at 85% 75%, rgba(16,20,30,0.7) 0%, transparent 60%),
    linear-gradient(150deg, #12151e 0%, #0e1016 45%, #111420 75%, #131620 100%);
  transition: background 0.5s ease;
}
body:has(#portfolio-root[data-theme="light"]) {
  background:
    radial-gradient(ellipse 80% 60% at 15% 20%, rgba(238,234,228,0.8) 0%, transparent 65%),
    radial-gradient(ellipse 70% 50% at 85% 80%, rgba(234,230,222,0.6) 0%, transparent 60%),
    linear-gradient(150deg, #f5f4ef 0%, #f1eeea 45%, #ede9e3 75%, #f2f0eb 100%);
}

/* Scrollbar — dark */
html { scrollbar-color: #2d3140 #0e1016; scroll-behavior: smooth; }
::-webkit-scrollbar              { width: 10px; height: 10px; }
::-webkit-scrollbar-track        { background: #0e1016; }
::-webkit-scrollbar-thumb        { background: #2d3140; border-radius: 8px; }

/* Scrollbar — light */
html:has(#portfolio-root[data-theme="light"]) { scrollbar-color: #c0bbb0 #f5f4ef; }
html:has(#portfolio-root[data-theme="light"]) ::-webkit-scrollbar-track { background: #f5f4ef; }
html:has(#portfolio-root[data-theme="light"]) ::-webkit-scrollbar-thumb { background: #c0bbb0; }

/* ── Particles canvas ────────────────────────────────────── */
#pf-particles {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  display: block;
}

/* ── Theme toggle button ─────────────────────────────────── */
.pf-theme-toggle {
  display: flex; align-items: center; justify-content: center;
  width: 2rem; height: 2rem; border-radius: 2px;
  border: 1px solid var(--line2);
  background: transparent;
  color: var(--mute);
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
  flex-shrink: 0;
  margin-left: 0.5rem;
}
.pf-theme-toggle:hover { color: var(--fg); border-color: color-mix(in oklab, var(--accent) 60%, transparent); }
.pf-theme-toggle svg        { width: 14px; height: 14px; stroke: currentColor; fill: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }
.pf-theme-toggle svg circle,
.pf-theme-toggle svg line   { fill: none; }

/* ── Hero notice (postdoc availability) ──────────────────────
   Styled as a first-class card to match .pf-cv-card / .pf-card:
   subtle ink-tinted surface, hairline border, § label,
   serif body. Lives below the hero CTA row.                    */
.pf-notice {
  position: relative;
  margin: 2.25rem 0 0;
  padding: 1.1rem 1.25rem 1.2rem;
  border: 1px solid color-mix(in oklab, var(--line) 70%, transparent);
  border-left: 2px solid var(--accent);
  border-radius: 2px;
  background: color-mix(in oklab, var(--ink2) 40%, transparent);
  max-width: 52rem;
}
.pf-notice__head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.45rem;
}
.pf-notice__meta {
  color: var(--accent);
  font-size: 10.5px;
  letter-spacing: 0.08em;
}
.pf-notice__h {
  margin: 0 0 0.55rem;
  font-family: var(--serif);
  font-weight: 400;
  font-size: 19px;
  line-height: 1.25;
  color: var(--fg);
  letter-spacing: -0.005em;
}
.pf-notice__p {
  margin: 0;
  color: color-mix(in oklab, var(--fg) 85%, transparent);
  font-family: var(--serif);
  font-size: 15.5px;
  line-height: 1.6;
  text-wrap: pretty;
}
.pf-notice__p em     { font-style: italic; }
.pf-notice__p strong { color: var(--accent); font-weight: 500; }
.pf-notice__p a {
  color: var(--accent);
  border-bottom: 1px solid color-mix(in oklab, var(--accent) 40%, transparent);
  transition: border-color 0.2s;
}
.pf-notice__p a:hover { border-bottom-color: var(--accent); }

/* ── Global box-model / resets ───────────────────────────── */
#portfolio-root * { box-sizing: border-box; }
#portfolio-root a { color: inherit; text-decoration: none; }
#portfolio-root em { font-style: italic; }
#portfolio-root ::selection { background: var(--accent); color: var(--ink); }
#portfolio-root code {
  font-family: var(--mono);
  font-size: 0.92em;
  background: var(--code-bg);
  padding: 1px 5px;
  border-radius: 3px;
}

/* ── Layout primitives ───────────────────────────────────── */
.pf-container        { max-width: 1200px; margin-inline: auto; padding-inline: 1.5rem; }
.pf-container--wide  { max-width: 1320px; }
@media (min-width: 768px) {
  .pf-container { padding-inline: 2.5rem; }
}

.pf-section {
  position: relative;
  border-bottom: 1px solid var(--hairline);
  padding-block: 4rem;
}
@media (min-width: 768px) {
  .pf-section { padding-block: 5rem; }
}

.pf-hrule {
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(232,230,223,0.18), transparent);
  margin-block: 2rem;
}
.pf-hrule--max3xl { max-width: 48rem; }

.pf-smallcaps {
  font-variant: small-caps;
  letter-spacing: 0.08em;
}

.pf-dot  { color: var(--dim); margin-inline: 0.4em; }
.pf-dim  { color: var(--dim); }
.pf-label{ color: var(--mute); font-size: 11px; }
.pf-lede { color: var(--mute); font-size: 14px; line-height: 1.6; max-width: 38ch; text-wrap: pretty; }

.pf-ink--mute     { color: var(--mute); font-style: italic; }
.pf-ink--research { color: var(--accent); }

/* Inline link utility — accent-colored with a soft underline,
   for places where a link should clearly read as clickable. */
#portfolio-root a.pf-link {
  color: var(--accent);
  border-bottom: 1px solid color-mix(in oklab, var(--accent) 40%, transparent);
  transition: border-color 0.2s;
}
#portfolio-root a.pf-link:hover { border-bottom-color: var(--accent); }

/* Display face — EB Garamond, for headings/titles only.
   Body text stays in sans (via --serif alias) for readability.
   !important because individual heading rules below still set
   font-family: var(--serif) (the sans alias), and would win on
   source order otherwise. */
.pf-hero__name,
.pf-hero__title,
.pf-h2,
.pf-nav__name,
.pf-card__title,
.pf-notice__h,
.pf-course__name,
.pf-cv-card__h { font-family: var(--display) !important; }

/* Hide the "research · l1" / "methods · r2" card-bar labels,
   the pill legend above the Venn, and the three caption tiles
   below — they add noise. */
.pf-venn__stage .pf-card__bar .pf-smallcaps,
.pf-venn__legend,
.pf-venn__captions { display: none !important; }

.pf-h2 {
  margin: 0.75rem 0 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(26px, 4vw, 44px);
  line-height: 1.05;
  letter-spacing: -0.01em;
  text-wrap: balance;
  max-width: 24ch;
}
.pf-h2--tight { max-width: 24ch; }
.pf-h2--small { font-size: clamp(24px, 3.2vw, 36px); line-height: 1.08; }

/* ── Nav ─────────────────────────────────────────────────── */
.pf-nav {
  position: sticky; top: 0; z-index: 40;
  border-bottom: 1px solid color-mix(in oklab, var(--accent) 55%, transparent);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  /* Lifted plane: base on --ink3 (the lightest dark token) with
     a cool --research tint, so the nav sits clearly above the
     near-black body without reading brown or neutral grey. */
  background: color-mix(in oklab, var(--ink3) 82%, var(--research) 18%);
  box-shadow: 0 6px 24px -8px rgba(0, 0, 0, 0.65);
}
.pf-nav__row {
  display: flex; align-items: center; justify-content: space-between;
  height: 3.75rem;
}
.pf-nav__brand { display: flex; align-items: baseline; gap: 0.75rem; }
.pf-nav__name  { font-family: var(--serif); font-size: 19px; letter-spacing: -0.01em; color: var(--fg); }
.pf-nav__role  { font-size: 12px; color: var(--mute); font-style: italic; }
@media (max-width: 640px) { .pf-nav__role { display: none; } }

/* <details> is a semantic shell that only "toggles" on mobile.
   On desktop we force it flat: content always visible regardless
   of [open], burger hidden. The open/close gating lives inside
   the mobile media query below. */
.pf-nav__menu { display: contents; }
.pf-nav__burger { display: none; }
.pf-nav__links { display: none; gap: 0.1rem; align-items: center; }
@media (min-width: 768px) {
  .pf-nav__links { display: flex !important; }
}
.pf-nav__links a {
  padding: 0.5rem 0.85rem;
  font-size: 14px;
  font-weight: 500;
  color: color-mix(in oklab, var(--fg) 82%, transparent);
  transition: color 0.2s, background 0.2s;
  border-radius: 3px;
}
.pf-nav__links a:hover {
  color: var(--fg);
  background: color-mix(in oklab, var(--accent) 10%, transparent);
}
.pf-nav__links a.is-active {
  color: var(--accent);
  box-shadow: inset 0 -2px 0 color-mix(in oklab, var(--accent) 75%, transparent);
}

.pf-btn {
  display: inline-block; font-size: 12.5px;
  padding: 0.375rem 0.75rem; border-radius: 2px;
  border: 1px solid var(--line2); color: var(--mute);
  transition: color 0.2s, border-color 0.2s;
}
.pf-btn:hover { color: var(--fg); border-color: color-mix(in oklab, var(--accent) 60%, transparent); }
.pf-btn--ghost { background: transparent; }

/* ── Hero ────────────────────────────────────────────────── */
.pf-hero { padding-block: 5rem; }
@media (min-width: 768px) { .pf-hero { padding-block: 7rem; } }

.pf-hero__grid {
  position: absolute; inset: 0; pointer-events: none; opacity: 0.6;
  background-image:
    linear-gradient(to right,  var(--grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
}
.pf-hero__glow {
  position: absolute; left: -10rem; top: 5rem;
  width: 420px; height: 420px; border-radius: 9999px;
  background: color-mix(in oklab, var(--research) 7%, transparent);
  filter: blur(120px);
  pointer-events: none;
}

.pf-hero__inner { position: relative; }

.pf-meta {
  display: flex; align-items: center; gap: 0.75rem;
  color: var(--mute); font-size: 11.5px;
}
.pf-meta__dash { display: inline-block; width: 1.5rem; height: 1px; background: var(--line2); }

.pf-hero__name {
  margin: 1.25rem 0 0;
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(44px, 7vw, 72px);
  line-height: 1.02; letter-spacing: -0.015em; color: var(--fg);
}
.pf-hero__title {
  margin: 0.75rem 0 0; max-width: 62ch;
  /* Intentional override: use EB Garamond only for this line,
     since the rest of the site moved to sans. */
  font-family: "EB Garamond", Georgia, serif;
  font-size: clamp(20px, 2.4vw, 24px);
  color: var(--mute);
}
.pf-hero__title em { font-style: italic; }

.pf-hero__body {
  display: grid; grid-template-columns: 1fr; gap: 2.5rem;
}
@media (min-width: 1024px) {
  .pf-hero__body { grid-template-columns: 2fr 1fr; }
}

.pf-hero__statement {
  font-family: var(--serif);
  font-size: clamp(15.5px, 1.4vw, 17.5px);
  line-height: 1.7;
  color: color-mix(in oklab, var(--fg) 85%, transparent);
  text-wrap: pretty;
}

.pf-affil { display: flex; flex-direction: column; gap: 0.75rem; font-size: 13.5px; }
.pf-affil__row  { display: flex; gap: 0.75rem; }
.pf-affil__label{ min-width: 90px; padding-top: 3px; font-size: 10.5px; color: var(--dim); }
.pf-affil__val  { flex: 1; color: color-mix(in oklab, var(--fg) 85%, transparent); line-height: 1.55; }
.pf-affil__val--serif { font-family: var(--serif); font-style: italic; }
.pf-affil__val--mono  { font-family: var(--mono); font-size: 12.5px; }

.pf-hero__cta {
  margin-top: 2.5rem;
  display: flex; flex-wrap: wrap; align-items: center;
  column-gap: 1.25rem; row-gap: 0.5rem;
  font-size: 13.5px;
}
.pf-hero__cta a {
  color: var(--fg);
  text-decoration: underline;
  text-underline-offset: 5px;
  text-decoration-color: var(--dim);
  transition: text-decoration-color 0.2s;
}
.pf-hero__cta a:hover { text-decoration-color: var(--fg); }

/* ── Generic "split" section (left: heading / right: list) ── */
.pf-split {
  display: grid; grid-template-columns: 1fr; gap: 2.5rem;
}
@media (min-width: 1024px) {
  .pf-split { grid-template-columns: 4fr 8fr; }
}
.pf-split__head--row {
  display: flex; flex-direction: column; gap: 1.5rem;
  margin-bottom: 2rem;
}
@media (min-width: 768px) {
  .pf-split__head--row { flex-direction: row; align-items: flex-end; justify-content: space-between; }
}

/* ── Generic row list with horizontal rules ─────────────── */
.pf-list {
  list-style: none; margin: 0; padding: 0;
}
.pf-list--rule {
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}
.pf-list--rule > * + * { border-top: 1px solid var(--hairline); }

/* News row */
.pf-row {
  display: grid; grid-template-columns: 3fr 2fr 7fr;
  gap: 1rem; padding-block: 1rem;
}
@media (min-width: 768px) {
  .pf-row { grid-template-columns: 2fr 2fr 8fr; }
}
.pf-row__date { font-size: 13px; color: var(--mute); padding-top: 3px; }
.pf-row__tag  { font-size: 11.5px; font-family: var(--mono); color: var(--accent); padding-top: 3px; }
.pf-row__body { font-family: var(--serif); font-size: 15.5px; line-height: 1.55; color: color-mix(in oklab, var(--fg) 90%, transparent); text-wrap: pretty; }

/* ── Education row ───────────────────────────────────────── */
.pf-list--wide .pf-edu + .pf-edu { border-top: 1px solid var(--hairline); }
.pf-edu {
  display: grid; grid-template-columns: 1fr; gap: 0.5rem;
  padding-block: 1.25rem;
}
@media (min-width: 768px) {
  .pf-edu { grid-template-columns: 2fr 10fr; gap: 1.25rem; }
}
.pf-edu__year  { font-size: 13px; color: var(--mute); padding-top: 3px; }
.pf-edu__main  { font-family: var(--serif); }
.pf-edu__degree { font-size: 16.5px; color: color-mix(in oklab, var(--fg) 92%, transparent); line-height: 1.4; }
.pf-edu__name  { color: var(--fg); }
.pf-edu__honor { color: var(--accent); font-style: italic; }
.pf-edu__inst  { margin-top: 0.15rem; font-size: 13.5px; color: var(--mute); }
.pf-edu__note  { margin: 0.5rem 0 0; font-size: 13px; color: var(--mute); font-family: var(--serif); font-style: italic; line-height: 1.55; text-wrap: pretty; }

/* ── Venn (research) ─────────────────────────────────────── */
.pf-venn__glow--l, .pf-venn__glow--r {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 480px; height: 480px; border-radius: 9999px; filter: blur(120px);
  pointer-events: none;
}
.pf-venn__glow--l { left: 0;  background: color-mix(in oklab, var(--research) 6%, transparent); }
.pf-venn__glow--r { right: 0; background: color-mix(in oklab, var(--industry) 6%, transparent); }

.pf-venn__summary {
  margin: 1.25rem 0 1.5rem;
  padding: 1rem 1.25rem;
  border-left: 2px solid color-mix(in oklab, var(--accent) 55%, transparent);
  background: color-mix(in oklab, var(--ink2) 35%, transparent);
  border-radius: 2px;
  max-width: 60rem;
}
.pf-venn__summary p {
  margin: 0.4rem 0 0;
  font-family: var(--serif);
  font-size: 15px;
  line-height: 1.65;
  color: color-mix(in oklab, var(--fg) 88%, transparent);
  text-wrap: pretty;
}
.pf-venn__summary em { font-style: italic; color: var(--accent); }

/* Collapsible Venn — keeps the diagram available without dominating
   the scroll for visitors who only want the prose summary. */
.pf-venn__toggle { margin: 0.5rem 0 1rem; }
.pf-venn__toggle > .pf-venn__toggle-sum {
  display: inline-flex; align-items: center; gap: 0.5rem;
  cursor: pointer; user-select: none;
  padding: 0.5rem 0.85rem;
  font-family: var(--serif); font-style: italic;
  font-size: 14.5px;
  color: color-mix(in oklab, var(--fg) 80%, transparent);
  border: 1px solid color-mix(in oklab, var(--line) 70%, transparent);
  border-left: 2px solid var(--accent);
  border-radius: 2px;
  background: color-mix(in oklab, var(--ink2) 35%, transparent);
  list-style: none;
  transition: color 0.2s, background 0.2s;
}
.pf-venn__toggle > .pf-venn__toggle-sum::-webkit-details-marker { display: none; }
.pf-venn__toggle > .pf-venn__toggle-sum:hover { color: var(--fg); background: color-mix(in oklab, var(--ink2) 55%, transparent); }
.pf-venn__toggle-chev { display: inline-block; transition: transform 0.2s; font-style: normal; color: var(--accent); }
.pf-venn__toggle[open] > .pf-venn__toggle-sum .pf-venn__toggle-chev { transform: rotate(180deg); }
.pf-venn__toggle[open] > .pf-venn__toggle-sum { margin-bottom: 1rem; }

/* Collaborations callout — lives inside the Research section,
   styled as a first-class framed note with a research-blue
   left rule so it reads as research content, not a hero ad. */
.pf-collab {
  position: relative;
  margin: 2rem 0 1.75rem;
  padding: 1.1rem 1.25rem 1.2rem;
  border: 1px solid color-mix(in oklab, var(--line) 70%, transparent);
  border-left: 2px solid var(--research);
  border-radius: 2px;
  background: color-mix(in oklab, var(--ink2) 40%, transparent);
  max-width: 64rem;
}
.pf-collab__head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 1rem; flex-wrap: wrap;
  margin-bottom: 0.45rem;
}
.pf-collab__meta {
  color: var(--research);
  font-size: 11.5px;
  letter-spacing: 0.08em;
}
.pf-collab__h {
  margin: 0 0 0.55rem;
  font-weight: 400;
  font-size: 19px;
  line-height: 1.25;
  color: var(--fg);
  letter-spacing: -0.005em;
}
.pf-collab__p {
  margin: 0;
  color: color-mix(in oklab, var(--fg) 88%, transparent);
  font-size: 15.5px;
  line-height: 1.6;
  text-wrap: pretty;
}
.pf-collab__p em     { font-style: italic; }
.pf-collab__p strong { color: var(--research); font-weight: 500; }

.pf-venn__legend {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem;
  margin-bottom: 1.25rem; font-size: 12px;
}
.pf-pill {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.375rem 0.75rem; border-radius: 6px;
  border: 1px solid var(--line2); color: var(--mute);
  background: transparent; cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
  font-family: var(--sans);
}
.pf-pill:hover { color: var(--fg); }
.pf-pill.is-pinned {
  background: var(--pill-pinned-bg);
  border-color: var(--pill-pinned-bdr);
  color: var(--fg);
}
.pf-pill__sw { width: 10px; height: 10px; border-radius: 9999px; display: inline-block; }
.pf-venn__state {
  margin-left: auto; color: var(--dim); font-family: var(--mono); font-size: 11px;
}
.pf-venn__state #pf-venn-state { color: var(--fg); }

.pf-venn__stage {
  position: relative;
  border: 1px solid color-mix(in oklab, var(--line) 70%, transparent);
  border-radius: 2px;
  background: color-mix(in oklab, var(--ink2) 40%, transparent);
  overflow: hidden;
}
.pf-venn__grid {
  position: absolute; inset: 0; opacity: 0.4; pointer-events: none;
  background-image:
    linear-gradient(to right,  var(--grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
}
.pf-venn__cap { position: absolute; font-size: 10.5px; color: var(--dim); z-index: 2; pointer-events: none; }
.pf-venn__cap--tl { left: 1.25rem; top: 1rem; }
.pf-venn__cap--br { right: 1.25rem; bottom: 1rem; font-family: var(--serif); font-style: italic; font-size: 11px; }

.pf-venn__ribbons {
  position: absolute; inset: 0; width: 100%; height: 100%; z-index: 5;
  pointer-events: none;
}

.pf-venn__row {
  position: relative; z-index: 10;
  display: grid; grid-template-columns: 3fr 6fr 3fr;
  gap: 0.75rem; padding: 1.25rem;
}
@media (min-width: 768px) { .pf-venn__row { gap: 1.25rem; padding: 2rem; } }
@media (max-width: 900px) {
  .pf-venn__row { grid-template-columns: 1fr; }
  .pf-venn__ribbons { display: none; }
}

.pf-venn__col { display: flex; flex-direction: column; justify-content: center; gap: 0.75rem; }
.pf-venn__center {
  position: relative;
  display: flex; flex-direction: column; align-items: center; justify-content: flex-start;
  gap: 1rem;
  min-height: 560px;
}
.pf-venn__top {
  display: flex; justify-content: center; align-items: stretch;
  gap: 0.75rem; flex-wrap: nowrap;
  width: 100%;
}
@media (max-width: 900px) {
  .pf-venn__top { flex-wrap: wrap; }
}
@media (max-width: 900px) {
  .pf-venn__center { min-height: auto; }
}

.pf-venn__svg { width: 100%; height: auto; max-width: 560px; display: block; }

/* Cards */
.pf-card {
  background: color-mix(in oklab, var(--ink2) 95%, transparent);
  backdrop-filter: blur(4px);
  border: 1px solid var(--card-border);
  border-radius: 2px;
  box-shadow: 0 20px 40px -20px rgba(0,0,0,0.8);
  opacity: 0.28;
  transform: translateX(var(--pf-card-offset, 0));
  transition: opacity 0.4s cubic-bezier(0.2,0.8,0.2,1),
              transform 0.4s cubic-bezier(0.2,0.8,0.2,1),
              border-color 0.3s;
}
.pf-card[data-side="L"] { --pf-card-offset: -8px; }
.pf-card[data-side="R"] { --pf-card-offset: 8px; }
.pf-card[data-side="T"] { --pf-card-offset: 0; }
.pf-card.is-active { opacity: 1; --pf-card-offset: 0; }
.pf-card.is-highlighted {
  border-color: var(--pill-pinned-bdr);
  transform: scale(1.02);
}
.pf-card--compact { max-width: 260px; flex: 1 1 220px; }
.pf-card__bar {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.375rem 0.75rem;
  border-bottom: 1px solid var(--hairline-faint);
  font-size: 10px; color: var(--dim);
}
.pf-card__dot { width: 6px; height: 6px; border-radius: 9999px; display: inline-block; }
.pf-card__body { padding: 0.75rem; }
.pf-card__title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: 14.5px; line-height: 1.2;
  color: var(--fg); text-wrap: pretty;
}
.pf-card__body p {
  margin: 0.375rem 0 0;
  font-size: 12px; line-height: 1.55;
  color: var(--mute); text-wrap: pretty;
}

/* Chips (tech pills inside cards) */
.pf-pills { margin-top: 0.5rem; display: flex; flex-wrap: wrap; gap: 0.25rem; }
.pf-chip {
  padding: 2px 6px; border-radius: 2px; border: 1px solid;
  font-family: var(--mono); font-size: 10px;
}
.pf-chip[data-c="T"] { color: var(--research); border-color: color-mix(in oklab, var(--research) 55%, transparent); background: color-mix(in oklab, var(--research) 10%, transparent); }
.pf-chip[data-c="R"] { color: var(--industry); border-color: color-mix(in oklab, var(--industry) 55%, transparent); background: color-mix(in oklab, var(--industry) 10%, transparent); }
.pf-chip[data-c="L"] { color: var(--overlap);  border-color: color-mix(in oklab, var(--overlap)  55%, transparent); background: color-mix(in oklab, var(--overlap)  10%, transparent); }

/* Venn SVG circle states — three-circle triangular layout */
#pf-venn-T, #pf-venn-L, #pf-venn-R {
  cursor: pointer;
  transition: opacity 0.4s, stroke-width 0.3s, transform 0.4s cubic-bezier(0.2,0.8,0.2,1);
}
#pf-venn-T { transform-origin: 280px 170px; }
#pf-venn-L { transform-origin: 200px 305px; }
#pf-venn-R { transform-origin: 360px 305px; }

.pf-venn__svg.side-T #pf-venn-T,
.pf-venn__svg.side-L #pf-venn-L,
.pf-venn__svg.side-R #pf-venn-R { transform: scale(1.02); stroke-width: 1.5; }

.pf-venn__svg.side-T #pf-venn-L,
.pf-venn__svg.side-T #pf-venn-R,
.pf-venn__svg.side-L #pf-venn-T,
.pf-venn__svg.side-L #pf-venn-R,
.pf-venn__svg.side-R #pf-venn-T,
.pf-venn__svg.side-R #pf-venn-L { opacity: 0.55; }

/* Venn caption tiles */
.pf-venn__captions {
  margin-top: 1.25rem;
  display: grid; grid-template-columns: 1fr; gap: 1rem;
  font-size: 13px;
}
@media (min-width: 768px) {
  .pf-venn__captions { grid-template-columns: repeat(3, 1fr); }
}
.pf-venn__cap-tile {
  border: 1px solid var(--hairline);
  background: color-mix(in oklab, var(--ink2) 60%, transparent);
  border-radius: 2px;
  padding: 1rem;
}
.pf-venn__cap-head { display: flex; align-items: center; gap: 0.5rem; color: var(--dim); font-size: 10.5px; }
.pf-venn__cap-body { margin-top: 0.5rem; font-family: var(--serif); font-style: italic; font-size: 13px; color: var(--mute); }

.pf-sw { width: 8px; height: 8px; border-radius: 9999px; display: inline-block; }
.pf-n  { margin-left: auto; font-family: var(--mono); font-size: 11px; color: var(--mute); text-transform: none; letter-spacing: 0; }

/* ── Publications ────────────────────────────────────────── */
.pf-pubs__controls {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem;
  margin-bottom: 1.25rem; font-size: 12px;
}
.pf-toggle {
  display: inline-flex; border: 1px solid var(--line2); border-radius: 2px;
  overflow: hidden; margin-right: 0.5rem;
}
.pf-toggle__btn {
  padding: 0.375rem 0.75rem;
  background: transparent; color: var(--mute); border: 0;
  font-family: var(--sans); font-size: 12px; cursor: pointer;
  transition: color 0.2s, background 0.2s;
}
.pf-toggle__btn:hover        { color: var(--fg); }
.pf-toggle__btn.is-active    { background: var(--toggle-active); color: var(--fg); }

.pf-topic {
  padding: 4px 8px; border: 1px solid var(--line2); border-radius: 2px;
  background: transparent; color: var(--mute); cursor: pointer;
  font-family: var(--sans); font-size: 12px;
  transition: color 0.2s, border-color 0.2s;
}
.pf-topic:hover             { color: var(--fg); }
.pf-topic.is-active         { border-color: color-mix(in oklab, var(--accent) 60%, transparent); color: var(--accent); }
.pf-topic.is-active[data-topic=""] { border-color: color-mix(in oklab, var(--fg) 40%, transparent); color: var(--fg); }

.pf-pubs__count { margin-left: auto; color: var(--dim); font-family: var(--mono); font-size: 11px; }

.pf-pubs__list {
  list-style: none; margin: 0; padding: 0;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}
.pf-pubs__list > li + li { border-top: 1px solid var(--hairline); }
.pf-pub {
  display: grid; grid-template-columns: 1fr; gap: 1rem;
  padding-block: 1.25rem;
}
@media (min-width: 768px) {
  .pf-pub { grid-template-columns: 1fr 2fr 9fr; }
}
.pf-pub__n  { font-family: var(--mono); font-size: 11px; color: var(--dim); padding-top: 3px; }
.pf-pub__y  { font-size: 13px; color: var(--mute); padding-top: 3px; }
.pf-pub__body { font-family: var(--serif); }
.pf-pub__cite {
  font-size: 15.5px; line-height: 1.55;
  color: color-mix(in oklab, var(--fg) 90%, transparent);
  text-wrap: pretty;
}
.pf-pub__self {
  color: var(--fg); font-weight: 500;
  text-decoration: underline; text-underline-offset: 4px;
  text-decoration-color: color-mix(in oklab, var(--accent) 60%, transparent);
}
.pf-pub__venue { color: var(--mute); font-style: italic; }
.pf-pub__vol   { color: var(--mute); }
.pf-pub__meta {
  margin-top: 0.5rem;
  display: flex; flex-wrap: wrap; align-items: center;
  column-gap: 1rem; row-gap: 0.25rem;
  font-family: var(--mono); font-size: 11.5px;
}
.pf-pub__meta .tag  { color: var(--dim); }
.pf-pub__meta .sep  { color: var(--dim); }
.pf-pub__meta a     { color: var(--mute); transition: color 0.2s; }
.pf-pub__meta a:hover { color: var(--fg); }

/* ── Talks ──────────────────────────────────────────────── */
.pf-talks .pf-talk + .pf-talk { border-top: 1px solid var(--hairline); }
.pf-talk {
  display: grid; grid-template-columns: 3fr 4fr 12fr;
  gap: 1rem; padding-block: 1rem;
}
@media (min-width: 768px) {
  .pf-talk { grid-template-columns: 1fr 2fr 9fr; }
}
.pf-talk__year { font-size: 13px; color: var(--mute); padding-top: 3px; }
.pf-talk__kind { font-size: 13px; font-family: var(--mono); padding-top: 3px; }
.pf-talk__kind[data-kind="Invited"]     { color: var(--accent); }
.pf-talk__kind[data-kind="Poster"]      { color: var(--mute); }
.pf-talk__kind[data-kind="Seminar"]     { color: var(--research); }
.pf-talk__kind[data-kind="Contributed"] { color: var(--research); }
.pf-talk__body { font-family: var(--serif); }
.pf-talk__title { font-size: 15.5px; font-style: italic; line-height: 1.5; color: color-mix(in oklab, var(--fg) 90%, transparent); }
.pf-talk__venue { margin-top: 0.15rem; font-size: 13.5px; color: var(--mute); }
.pf-talk__venue em { font-style: italic; }

/* ── Teaching ───────────────────────────────────────────── */
.pf-teach__summary {
  margin: 1rem 0 1.5rem;
  max-width: 64ch;
  color: color-mix(in oklab, var(--fg) 85%, transparent);
  font-size: 15px;
  line-height: 1.6;
  text-wrap: pretty;
}
.pf-teach__summary em { font-style: italic; color: var(--accent); }

.pf-teach__grid {
  display: grid; grid-template-columns: 1fr; gap: 1.25rem;
}
@media (min-width: 768px) {
  .pf-teach__grid { grid-template-columns: repeat(2, 1fr); }
}
.pf-course {
  border: 1px solid color-mix(in oklab, var(--line) 70%, transparent);
  border-radius: 2px;
  padding: 1.25rem;
  background: color-mix(in oklab, var(--ink2) 40%, transparent);
}
.pf-course__head {
  display: flex; align-items: baseline; justify-content: space-between; gap: 1rem;
}
.pf-course__code,
#portfolio-root a.pf-course__code { font-family: var(--mono); font-size: 11px; color: var(--accent); text-decoration: none; transition: opacity 0.2s; }
#portfolio-root a.pf-course__code:hover { opacity: 0.75; text-decoration: underline; text-underline-offset: 2px; }
.pf-course__term { font-size: 12.5px; color: var(--mute); }
.pf-course__name { margin: 0.5rem 0 0; font-family: var(--serif); font-weight: 400; font-size: 18px; line-height: 1.2; color: var(--fg); }
.pf-course__role { margin-top: 0.125rem; font-size: 12.5px; font-style: italic; color: var(--research); }
.pf-course__note { margin-top: 0.75rem; font-size: 13px; color: var(--mute); line-height: 1.55; text-wrap: pretty; }

/* ── Awards ─────────────────────────────────────────────── */
.pf-awards__cols { display: grid; grid-template-columns: 1fr; gap: 2.5rem; }
@media (min-width: 1024px) { .pf-awards__cols { grid-template-columns: 1fr 1fr; } }
.pf-awards__col-head { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.75rem; color: var(--mute); font-size: 13.5px; letter-spacing: 0.04em; }
.pf-awards__col-head .pf-n { display: none; }
.pf-award { display: grid; grid-template-columns: 2fr 10fr; gap: 0.75rem; padding-block: 1rem; }
.pf-award__y    { font-size: 13px; color: var(--mute); padding-top: 2px; }
.pf-award__body { font-family: var(--serif); }
.pf-award__t    { font-size: 15.5px; color: color-mix(in oklab, var(--fg) 90%, transparent); line-height: 1.2; }
.pf-award__d    { margin-top: 0.25rem; font-size: 13px; font-style: italic; color: var(--mute); line-height: 1.55; text-wrap: pretty; }

/* ── Industry ───────────────────────────────────────────── */
.pf-ind {
  display: grid; grid-template-columns: 3fr 9fr;
  gap: 1rem; padding-block: 1rem;
}
@media (min-width: 768px) {
  .pf-ind { grid-template-columns: 2fr 4fr 6fr; }
}
.pf-ind__y    { font-size: 13px; color: var(--mute); padding-top: 3px; }
.pf-ind__org  { font-family: var(--serif); font-size: 16px; color: var(--fg); }
.pf-ind__role { display: block; margin-top: 0.15rem; font-size: 12.5px; font-style: italic; color: var(--industry); }
.pf-ind__note { font-size: 13.5px; color: var(--mute); line-height: 1.55; text-wrap: pretty; padding-top: 2px; }

/* ── Footer ─────────────────────────────────────────────── */
.pf-footer { border-bottom: 0; padding-block: 4rem; }
@media (min-width: 768px) { .pf-footer { padding-block: 5rem; } }
.pf-footer__grid { display: grid; grid-template-columns: 1fr; gap: 2.5rem; }
@media (min-width: 1024px) { .pf-footer__grid { grid-template-columns: 7fr 5fr; } }
.pf-footer__p {
  margin: 1rem 0 0; max-width: 58ch;
  font-family: var(--serif); font-size: 14.5px; line-height: 1.65;
  color: var(--mute); text-wrap: pretty;
}
.pf-footer__rows {
  margin-top: 1.5rem;
  display: grid; grid-template-columns: 1fr; gap: 0.75rem 2rem;
  font-size: 13.5px;
}
@media (min-width: 640px) {
  .pf-footer__rows { grid-template-columns: 1fr 1fr; }
}
.pf-contact-row   { display: flex; gap: 0.75rem; }
.pf-contact-row__l{ min-width: 64px; padding-top: 2px; font-size: 10.5px; color: var(--dim); }
.pf-contact-row__v{ color: color-mix(in oklab, var(--fg) 85%, transparent); }

.pf-cv-card {
  border: 1px solid color-mix(in oklab, var(--line) 70%, transparent);
  border-radius: 2px;
  padding: 1.25rem;
  background: color-mix(in oklab, var(--ink2) 40%, transparent);
}
.pf-cv-card__h { margin-top: 0.75rem; font-family: var(--serif); font-size: 20px; color: var(--fg); line-height: 1.2; }
.pf-cv-card__p { margin-top: 0.5rem; font-size: 13px; color: var(--mute); font-style: italic; line-height: 1.6; text-wrap: pretty; }
.pf-cv-card__btns { margin-top: 1.25rem; display: flex; flex-wrap: wrap; gap: 0.5rem; font-size: 12.5px; }

.pf-colophon {
  margin-top: 3.5rem; padding-top: 1.5rem;
  border-top: 1px solid var(--hairline);
  display: flex; flex-direction: column; gap: 0.75rem;
  font-family: var(--serif); font-style: italic; font-size: 11.5px;
  color: var(--dim);
}
@media (min-width: 640px) {
  .pf-colophon { flex-direction: row; align-items: center; justify-content: space-between; }
}

/* ── Reduced motion ─────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  #portfolio-root *, #portfolio-root *::before, #portfolio-root *::after {
    transition: none !important; animation: none !important;
  }
  #pf-particles { display: none; }
}

/* ═════════════════════════════════════════════════════════════
   MOBILE ADAPTATION
   All rules below only kick in at narrow viewports — desktop
   (≥ 900 / 768 / 640 px thresholds already used elsewhere) is
   untouched. Core idea: same information, re-shaped for a
   single-column phone layout. The Venn diagram becomes a clean
   grouped list; wide grids stack; dense rows unstack label
   above value; touch targets are eased.
   ═════════════════════════════════════════════════════════════ */

/* ── Venn → grouped list at ≤ 900 px ────────────────────── */
@media (max-width: 900px) {
  /* Kill the SVG diagram and its ribbons on mobile — the
     triangular layout can't compress usefully. */
  #pf-venn-svg,
  .pf-venn__ribbons,
  .pf-venn__legend,
  .pf-venn__cap { display: none; }

  /* Caption tiles stay hidden on mobile too — the cards
     themselves are self-explanatory. */

  /* Venn stage becomes a flat vertical list of all cards.
     The .pf-venn__center (the column that held the SVG + top
     cards) collapses to a simple stack. */
  .pf-venn__stage {
    border: none;
    background: transparent;
    padding: 0;
    overflow: visible;
  }
  .pf-venn__grid { display: none; }
  .pf-venn__row  { display: flex; flex-direction: column; gap: 1rem; padding: 0; }
  .pf-venn__col  { gap: 1rem; }
  .pf-venn__center { min-height: auto; gap: 1rem; }
  .pf-venn__top    { gap: 1rem; }
  .pf-card--compact { max-width: none; flex: 1 1 auto; }

  /* Reorder on phone: research (T, inside center) first, then
     computational methods (R), then experimental skills (L). */
  .pf-venn__row > .pf-venn__center      { order: 1; }
  .pf-venn__row > .pf-venn__col[data-side="R"] { order: 2; }
  .pf-venn__row > .pf-venn__col[data-side="L"] { order: 3; }

  /* Every card is always fully visible on mobile — no hover
     machinery, no dimmed resting state, no horizontal offsets. */
  .pf-card {
    opacity: 1 !important;
    transform: none !important;
  }
  .pf-card__body { padding: 0.9rem; }
  .pf-card__title { font-size: 16px; }
  .pf-card__body p { font-size: 13.5px; }

  /* Research-in-60-seconds reads as a proper paragraph on phones. */
  .pf-venn__summary {
    padding: 0.9rem 1rem;
    margin: 1.25rem 0;
  }
  .pf-venn__summary p { font-size: 14.5px; line-height: 1.6; }

  /* Collaborations callout — keep the frame but tighten padding. */
  .pf-collab { padding: 0.95rem 1rem 1.05rem; margin: 1.25rem 0; }
  .pf-collab__head { flex-direction: column; gap: 0.25rem; align-items: flex-start; }
  .pf-collab__h { font-size: 17px; }
  .pf-collab__p { font-size: 14.5px; }
}

/* ── General narrow-screen polish at ≤ 640 px ──────────── */
@media (max-width: 640px) {
  /* Base type a touch smaller so multi-line copy doesn't
     over-fill the viewport. */
  #portfolio-root { font-size: 15.5px; }

  /* Hero: less vertical padding, softer horizontal breathing. */
  .pf-hero { padding-block: 3rem 2rem; }
  .pf-hero__name { line-height: 1.05; }
  .pf-hero__title br { display: none; }

  /* Affiliation rows stack label above value so the value has
     full viewport width. Matches the News rows pattern. */
  .pf-affil__row { flex-direction: column; gap: 0.15rem; }
  .pf-affil__label { min-width: 0; padding-top: 0; }

  /* Open-to-collaborate notice: tighten padding. */
  .pf-notice { padding: 0.95rem 1rem; }
  .pf-notice__head { flex-wrap: wrap; gap: 0.35rem; }

  /* News rows: same three-column grid is cramped on phones.
     Stack date/tag into a header row above the body. */
  .pf-row {
    grid-template-columns: auto auto 1fr;
    grid-template-areas: "date tag ." "body body body";
    gap: 0.25rem 0.6rem;
  }
  .pf-row__date { grid-area: date; padding-top: 0; }
  .pf-row__tag  { grid-area: tag;  padding-top: 0; }
  .pf-row__body { grid-area: body; margin-top: 0.25rem; }

  /* Education rows: stack year above the main block. */
  .pf-edu { gap: 0.35rem; }
  .pf-edu__year { font-size: 12.5px; }

  /* Publications & Talks: the [n] / year / body three-column
     grid gets crowded. Drop the [n] number below 520 px and
     tuck year into the body header. */
  .pf-pub  { grid-template-columns: auto 1fr; column-gap: 0.75rem; }
  .pf-pub__n { grid-row: 1; grid-column: 1; font-size: 12px; padding-top: 3px; }
  .pf-pub__y { grid-row: 1; grid-column: 2; padding-top: 3px; font-size: 12.5px; color: var(--dim); }
  .pf-pub__body { grid-row: 2; grid-column: 1 / -1; }
  .pf-pub__cite { font-size: 14.5px; }

  .pf-talk { grid-template-columns: auto auto 1fr; column-gap: 0.75rem; row-gap: 0.35rem; }
  .pf-talk__year { grid-row: 1; grid-column: 1; padding-top: 0; }
  .pf-talk__kind { grid-row: 1; grid-column: 2; padding-top: 0; }
  .pf-talk__body { grid-row: 2; grid-column: 1 / -1; }

  /* Awards & Industry rows: stack year above body. */
  .pf-award { grid-template-columns: 1fr; gap: 0.25rem; padding-block: 0.85rem; }
  .pf-ind   { grid-template-columns: 1fr; gap: 0.4rem; }
  .pf-ind__org { font-size: 15px; }
  .pf-ind__role { display: block; margin-top: 0.15rem; font-size: 12px; }

  /* Publications controls: wrap cleanly with breathing room. */
  .pf-pubs__controls { gap: 0.4rem 0.5rem; }
  .pf-pubs__count { margin-left: 0; }

  /* Long lists become scrollable containers on mobile so they
     don't dominate the whole scroll experience. ~60vh cap is
     enough to show 3–4 items with a clear "more below" cue.
     Covers: Publications, Talks, Courses, Awards (per column),
     and Beyond research. */
  .pf-pubs__list,
  .pf-talks,
  .pf-teach__grid,
  .pf-venn__row,
  #awards .pf-awards__cols > div ul,
  #beyond .pf-list {
    position: relative;
    max-height: 60vh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding-right: 0.25rem;
    border: 1px solid color-mix(in oklab, var(--line) 60%, transparent);
    border-radius: 2px;
    background: color-mix(in oklab, var(--ink2) 20%, transparent);
    /* Fade-out mask at the bottom hints there's more content. */
    mask-image: linear-gradient(to bottom, black calc(100% - 24px), transparent);
    -webkit-mask-image: linear-gradient(to bottom, black calc(100% - 24px), transparent);
  }

  /* Scrollable-area cue: a small "scroll" badge pinned to the
     top-right corner of each scrollable list, so users notice
     the content extends below the visible window. The parent of
     these lists gets the cue via a ::after on a wrapper — but
     since these lists have no wrapper, put it on the list itself
     using sticky positioning so it stays in view while scrolling. */
  .pf-pubs__list::before,
  .pf-talks::before,
  .pf-teach__grid::before,
  .pf-venn__row::before,
  #awards .pf-awards__cols > div ul::before,
  #beyond .pf-list::before {
    content: "scroll ↓";
    position: absolute;
    top: 0.35rem;
    right: 0.35rem;
    z-index: 2;
    padding: 1px 5px;
    font-family: var(--mono);
    font-size: 9px;
    letter-spacing: 0.04em;
    color: var(--mute);
    background: color-mix(in oklab, var(--ink3) 85%, transparent);
    border: 1px solid color-mix(in oklab, var(--line2) 70%, transparent);
    border-radius: 10px;
    pointer-events: none;
    opacity: 0.85;
  }
  #awards .pf-awards__cols > div ul,
  #beyond .pf-list { max-height: 55vh; }

  .pf-pubs__list > li,
  .pf-talks > li,
  #awards .pf-awards__cols > div ul > li,
  #beyond .pf-list > li { padding: 0.75rem; }
  .pf-teach__grid { padding: 0.25rem; }
  .pf-venn__row   { padding: 0.5rem; gap: 0.75rem; }

  /* Slim the scrollbar so it reads as a subtle indicator. */
  .pf-pubs__list::-webkit-scrollbar,
  .pf-talks::-webkit-scrollbar,
  .pf-teach__grid::-webkit-scrollbar,
  .pf-venn__row::-webkit-scrollbar,
  #awards .pf-awards__cols > div ul::-webkit-scrollbar,
  #beyond .pf-list::-webkit-scrollbar { width: 4px; }
  .pf-pubs__list::-webkit-scrollbar-thumb,
  .pf-talks::-webkit-scrollbar-thumb,
  .pf-teach__grid::-webkit-scrollbar-thumb,
  .pf-venn__row::-webkit-scrollbar-thumb,
  #awards .pf-awards__cols > div ul::-webkit-scrollbar-thumb,
  #beyond .pf-list::-webkit-scrollbar-thumb {
    background: color-mix(in oklab, var(--mute) 50%, transparent);
    border-radius: 2px;
  }

  /* Teaching cards — already 1-col below 768px; just pad. */
  .pf-course { padding: 1rem; }

  /* Footer CV card btns: stack so they're tappable. */
  .pf-cv-card__btns { flex-direction: column; align-items: flex-start; }
  .pf-cv-card__btns .pf-btn { width: 100%; text-align: center; }

  /* Contact rows: label stacks above value. */
  .pf-contact-row { flex-direction: column; gap: 0.15rem; }
  .pf-contact-row__l { min-width: 0; padding-top: 0; }

  /* Nav on mobile: compact single row with a hamburger menu.
     Brand on the left, burger + theme + CV on the right. Tap
     the burger to reveal the links as a full-width dropdown
     below the sticky header. */
  .pf-nav__row { height: 2.75rem; gap: 0.35rem; }
  .pf-nav__brand { flex: 1 1 auto; gap: 0.45rem; min-width: 0; }
  .pf-nav__name  { font-size: 15px; }

  /* Expensive backdrop-filter causes scroll stutter at the top
     of the page on mobile (the nav repaints as the hero glow
     passes under it). Drop the blur and use a solid surface. */
  .pf-nav {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: color-mix(in oklab, var(--ink3) 96%, var(--research) 4%);
  }

  /* Burger icon: three bars. The <details>/<summary> machinery
     handles open/close state natively — no JS needed. */
  .pf-nav__burger {
    display: inline-flex; flex-direction: column; justify-content: center;
    gap: 4px;
    width: 1.75rem; height: 1.75rem;
    padding: 0.35rem;
    border: 1px solid var(--line2);
    border-radius: 2px;
    cursor: pointer;
    list-style: none;
    color: var(--fg);
  }
  .pf-nav__burger::-webkit-details-marker { display: none; }
  .pf-nav__burger::marker { display: none; content: ''; }
  .pf-nav__burger span {
    display: block;
    height: 1.5px; width: 100%;
    background: currentColor;
    transition: transform 0.2s, opacity 0.2s;
  }
  /* Open state: morph into an X. */
  .pf-nav__menu[open] .pf-nav__burger span:nth-child(1) {
    transform: translateY(5.5px) rotate(45deg);
  }
  .pf-nav__menu[open] .pf-nav__burger span:nth-child(2) { opacity: 0; }
  .pf-nav__menu[open] .pf-nav__burger span:nth-child(3) {
    transform: translateY(-5.5px) rotate(-45deg);
  }

  /* Dropdown panel: sits below the sticky header, full-width,
     pushes content out of the way while open. */
  .pf-nav__links {
    display: none;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    padding: 0.35rem 0;
    background: color-mix(in oklab, var(--ink3) 98%, var(--research) 2%);
    border-bottom: 1px solid color-mix(in oklab, var(--accent) 35%, transparent);
    box-shadow: 0 8px 24px -10px rgba(0, 0, 0, 0.6);
  }
  .pf-nav__menu[open] .pf-nav__links { display: flex !important; }
  .pf-nav__links a {
    padding: 0.65rem 1.25rem;
    font-size: 14px;
    border-radius: 0;
  }
  .pf-nav__links a:hover {
    background: color-mix(in oklab, var(--accent) 12%, transparent);
  }
  .pf-nav__links a.is-active {
    box-shadow: inset 3px 0 0 var(--accent);
  }

  /* Small buttons so the right-side cluster fits. */
  .pf-theme-toggle { width: 1.75rem; height: 1.75rem; margin-left: 0.25rem; }
  .pf-nav .pf-btn { padding: 0.3rem 0.55rem; font-size: 11.5px; }

  /* Section padding: breathe less vertically. */
  .pf-section { padding-block: 2.25rem; }

  /* Long code/URL strings get aggressive about wrapping. */
  .pf-affil__val--mono,
  .pf-contact-row__v { overflow-wrap: anywhere; }
}

/* ── Ultra-narrow (≤ 380 px, small phones) ─────────────── */
@media (max-width: 380px) {
  .pf-nav__role { display: none; }
  .pf-hero__name { font-size: 38px; }
}

/* Education — visual gap + soft divider between the Degrees
   block and the Additional-training block, so they read as
   two distinct subsections rather than one rolling list. */
.pf-edu__group--continued {
  margin-top: 3.5rem;
  padding-top: 3rem;
  border-top: 1px solid var(--hairline-faint);
}
@media (max-width: 767px) {
  .pf-edu__group--continued { margin-top: 2.25rem; padding-top: 2rem; }
}

/* ── Announcements ticker ──────────────────────────────────
   A thin strip below the hero. CSS-only marquee: the track
   contains the news items duplicated once and is translated
   from 0% to -50% so the seam is invisible. Pause on hover so
   readers can finish a line.
   ─────────────────────────────────────────────────────────── */
.pf-ticker {
  position: relative;
  border-top:    1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  background: color-mix(in oklab, var(--ink2) 70%, transparent);
  overflow: hidden;
}
.pf-ticker__row {
  display: flex; align-items: stretch; gap: 0;
  padding-block: 0.55rem;
}
.pf-ticker__label {
  display: inline-flex; align-items: center; gap: 0.5rem;
  flex: 0 0 auto;
  padding-right: 0.9rem; margin-right: 0.9rem;
  border-right: 1px solid var(--hairline);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.12em;
  white-space: nowrap;
}
.pf-ticker__dot {
  display: inline-block;
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 color-mix(in oklab, var(--accent) 50%, transparent);
  animation: pf-ticker-blink 2s ease-in-out infinite;
}
@keyframes pf-ticker-blink {
  0%, 100% { opacity: 1;   box-shadow: 0 0 0 0   color-mix(in oklab, var(--accent) 60%, transparent); }
  50%      { opacity: 0.55; box-shadow: 0 0 0 5px color-mix(in oklab, var(--accent) 0%,  transparent); }
}
.pf-ticker__viewport {
  flex: 1 1 auto; min-width: 0;
  overflow: hidden;
  /* Soft fades on both ends so items dissolve in/out cleanly. */
  -webkit-mask-image: linear-gradient(to right, transparent 0, #000 32px, #000 calc(100% - 32px), transparent 100%);
          mask-image: linear-gradient(to right, transparent 0, #000 32px, #000 calc(100% - 32px), transparent 100%);
}
.pf-ticker__track {
  display: inline-flex; align-items: center; gap: 1.25rem;
  list-style: none; margin: 0; padding: 0;
  white-space: nowrap;
  animation: pf-ticker-scroll 60s linear infinite;
  will-change: transform;
}
.pf-ticker:hover .pf-ticker__track,
.pf-ticker__track:focus-within { animation-play-state: paused; }
@keyframes pf-ticker-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
.pf-ticker__item {
  display: inline-flex; align-items: baseline; gap: 0.6rem;
  font-family: var(--serif);
  font-size: 13.5px;
  color: color-mix(in oklab, var(--fg) 85%, transparent);
}
.pf-ticker__date {
  font-size: 10.5px;
  color: var(--mute);
  letter-spacing: 0.08em;
  margin-right: 0.6rem;
  flex: 0 0 auto;
}
.pf-ticker__tag {
  font-family: var(--mono);
  font-size: 10.5px;
  padding: 1px 6px;
  border: 1px solid color-mix(in oklab, var(--accent) 45%, transparent);
  border-radius: 2px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-right: 0.6rem;
  flex: 0 0 auto;
}
.pf-ticker__body { flex: 0 1 auto; }
.pf-ticker__body em { font-style: italic; color: var(--fg); }
#portfolio-root .pf-ticker__link {
  display: inline-flex; align-items: baseline; gap: 0.6rem;
  color: inherit; text-decoration: none;
  padding: 2px 4px; margin: -2px -4px;
  border-radius: 2px;
  transition: background 0.18s, color 0.18s;
}
#portfolio-root .pf-ticker__link:hover {
  background: color-mix(in oklab, var(--accent) 14%, transparent);
  color: var(--fg);
}
#portfolio-root .pf-ticker__link:hover .pf-ticker__body { color: var(--fg); }
#portfolio-root .pf-ticker__link:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 2px;
  background: color-mix(in oklab, var(--accent) 14%, transparent);
}
.pf-ticker__sep {
  color: color-mix(in oklab, var(--accent) 55%, transparent);
  font-size: 9px;
}
@media (prefers-reduced-motion: reduce) {
  .pf-ticker__track { animation: none; }
  .pf-ticker__dot   { animation: none; }
}
@media (max-width: 640px) {
  .pf-ticker__label { font-size: 10px; padding-right: 0.6rem; margin-right: 0.6rem; }
  .pf-ticker__item  { font-size: 12.5px; }
}

/* ── Attention pulses ──────────────────────────────────────
   Two highlights:
     - The CV (PDF) button on first paint, so visitors notice
       it without scanning the whole nav.
     - The Venn-diagram toggle when the research section
       reaches the viewport, so it doesn't hide silently.
   Both fade out after a few cycles, then fully release on
   hover/focus to avoid distraction.
   ─────────────────────────────────────────────────────────── */
@keyframes pf-attn-pulse {
  0%   { box-shadow: 0 0 0 0   color-mix(in oklab, var(--accent) 55%, transparent); border-color: color-mix(in oklab, var(--accent) 80%, transparent); }
  60%  { box-shadow: 0 0 0 8px color-mix(in oklab, var(--accent) 0%,  transparent); border-color: color-mix(in oklab, var(--accent) 80%, transparent); }
  100% { box-shadow: 0 0 0 0   color-mix(in oklab, var(--accent) 0%,  transparent); border-color: var(--line2); }
}
.pf-attn {
  position: relative;
  border-color: color-mix(in oklab, var(--accent) 80%, transparent) !important;
  color: var(--fg) !important;
  background: color-mix(in oklab, var(--accent) 10%, transparent) !important;
  animation: pf-attn-pulse 1.8s ease-out 4;
}
.pf-attn:hover, .pf-attn:focus { animation: none; }

/* Variant for the Venn toggle — same idea but tuned to the
   summary's italic-serif look. */
.pf-venn__toggle.pf-attn {
  animation: none;
  background: transparent !important;
}
.pf-venn__toggle.pf-attn > .pf-venn__toggle-sum {
  border-color: color-mix(in oklab, var(--accent) 80%, transparent);
  background: color-mix(in oklab, var(--accent) 10%, transparent);
  color: var(--fg);
  animation: pf-attn-pulse 1.8s ease-out 4;
}
.pf-venn__toggle.pf-attn > .pf-venn__toggle-sum:hover { animation: none; }