/* ============================================================
   LIQUID GLASS LAYER
   Loaded after main.css from head/custom.html. Plain CSS on
   purpose: it uses rgb(var(--tint) / a) and other Color 4
   syntax that the GitHub Pages Sass build cannot parse.
   ============================================================ */
:root {
  --lg-blur: 34px;
  --lg-line: rgba(255, 255, 255, 0.90);
  --lg-hi: rgba(255, 255, 255, 0.96);
  --lg-inset: inset 0 1px 0 var(--lg-hi), inset 0 -1px 0 rgba(255, 255, 255, 0.35),
              inset 1px 0 0 rgba(255, 255, 255, 0.55), inset -1px 0 0 rgba(255, 255, 255, 0.35);
  --lg-shadow: 0 12px 40px rgba(30, 64, 175, 0.10), 0 1px 2px rgba(15, 23, 42, 0.05);
  --lg-card: linear-gradient(145deg, rgba(255, 255, 255, 0.62), rgba(255, 255, 255, 0.34));
  --lg-card-hover: linear-gradient(145deg, rgba(255, 255, 255, 0.84), rgba(255, 255, 255, 0.56));
  --tint-academic: 37 99 235;
  --tint-venture: 217 119 6;
  --tint: var(--tint-academic);
  --masthead-h: 56px;
}

/* ---- Wallpaper: soft colour fields + the dot grid, so the glass has something to show ---- */
body {
  background-color: #dbeafe;
  background-image:
    radial-gradient(circle, rgba(30, 64, 175, 0.16) 1px, transparent 1px),
    linear-gradient(160deg, #dbeafe 0%, #e0f2fe 45%, #ccfbf1 100%);
  background-size: 30px 30px, auto;
}
.bg-orb { filter: blur(90px); }

/* ---- Main pane: one big frosted sheet over the wallpaper ----
   flow-root makes the pane contain the theme's floated inner wrap; without it
   the pane collapses to its padding on small screens and the content sits on
   bare wallpaper. */
.page {
  display: flow-root;
  isolation: isolate;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.52), rgba(255, 255, 255, 0.36));
  -webkit-backdrop-filter: blur(var(--lg-blur)) saturate(1.9);
  backdrop-filter: blur(var(--lg-blur)) saturate(1.9);
  border: 1px solid var(--lg-line);
  border-radius: 22px;
  box-shadow: var(--lg-shadow), var(--lg-inset);
}
/* lit from above: a sheen across the top of the sheet, under the content */
.page::before {
  content: ''; position: absolute; left: 0; right: 0; top: 0; height: 360px; z-index: -1;
  border-radius: inherit; pointer-events: none;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0));
}

/* ---- Masthead: a floating glass toolbar with two-level menus ---- */
.masthead {
  position: -webkit-sticky; position: sticky;
  top: 10px; margin: 10px 12px 0;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.9);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.60), rgba(255, 255, 255, 0.38));
  -webkit-backdrop-filter: blur(30px) saturate(1.9);
  backdrop-filter: blur(30px) saturate(1.9);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.95), inset 0 -1px 0 rgba(255, 255, 255, 0.35),
              0 12px 36px rgba(30, 64, 175, 0.14), 0 1px 2px rgba(15, 23, 42, 0.05);
}
.masthead__inner-wrap { padding: 0.4em 0.6em; }

.site-nav { display: flex; align-items: center; gap: 2px; min-width: 0; }
.site-nav__home {
  margin-right: 0.5em; padding: 0.38em 0.8em; border-radius: 10px;
  font-size: 1.02rem; font-weight: 800; letter-spacing: -0.01em; color: var(--text-primary);
  text-decoration: none;
}
.site-nav__list { display: flex; align-items: center; gap: 2px; margin: 0; padding: 0; list-style: none; }
.site-nav__item { position: relative; list-style: none; }
.site-nav__link,
.site-nav__sub {
  display: inline-flex; align-items: center; gap: 0.35em;
  padding: 0.42em 0.85em; border-radius: 10px;
  font-size: 0.92rem; font-weight: 600; color: var(--text-muted); white-space: nowrap;
  text-decoration: none;
  transition: color 0.25s var(--ease), background 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.site-nav__home:hover,
.site-nav__link:hover,
.site-nav__item.is-open > .site-nav__link,
.site-nav__link.nav-active {
  color: var(--accent-1);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0.66));
  box-shadow: inset 0 1px 0 #fff, 0 4px 12px rgba(30, 64, 175, 0.12);
}
.site-nav__link:focus-visible, .site-nav__sub:focus-visible, .site-nav__home:focus-visible {
  outline: 2px solid rgba(37, 99, 235, 0.5); outline-offset: 2px;
}
.site-nav__chev { width: 11px; height: 11px; opacity: 0.7; transition: transform 0.25s var(--ease); }
.has-children:hover .site-nav__chev,
.has-children.is-open .site-nav__chev { transform: rotate(180deg); }

/* dropdown: a glass panel that hangs off the toolbar */
.site-nav__menu {
  position: absolute; top: calc(100% + 8px); left: 0; z-index: 30;
  min-width: 230px; margin: 0; padding: 6px; list-style: none; border-radius: 16px;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.82), rgba(255, 255, 255, 0.52));
  -webkit-backdrop-filter: blur(28px) saturate(1.8);
  backdrop-filter: blur(28px) saturate(1.8);
  border: 1px solid rgba(255, 255, 255, 0.92);
  box-shadow: inset 0 1px 0 #fff, 0 18px 48px rgba(30, 64, 175, 0.18), 0 2px 6px rgba(15, 23, 42, 0.06);
  opacity: 0; visibility: hidden; transform: translateY(-6px) scale(0.98); transform-origin: top left;
  transition: opacity 0.22s var(--ease), transform 0.22s var(--ease), visibility 0s linear 0.22s;
}
.site-nav__menu::before { content: ''; position: absolute; left: 0; right: 0; top: -10px; height: 10px; }
.has-children:hover > .site-nav__menu,
.has-children:focus-within > .site-nav__menu,
.has-children.is-open > .site-nav__menu {
  opacity: 1; visibility: visible; transform: none; transition-delay: 0s;
}
.site-nav__menu li { list-style: none; margin: 0; }
.site-nav__sub { display: flex; width: 100%; padding: 0.5em 0.9em; font-size: 0.88rem; color: #334155; }
.site-nav__sub:hover,
.site-nav__sub.nav-active {
  color: var(--accent-1);
  background: linear-gradient(145deg, #fff, rgba(255, 255, 255, 0.7));
  box-shadow: inset 0 1px 0 #fff, 0 2px 8px rgba(30, 64, 175, 0.12);
}
.site-nav__toggle { display: none; }

@media (max-width: 900px) {
  .masthead { margin: 8px 8px 0; top: 8px; border-radius: 14px; }
  .masthead__inner-wrap--flex { align-items: flex-start; }
  .masthead__inner-wrap--flex > .lang-toggle { margin-top: 3px; }
  .site-nav { flex-wrap: wrap; }
  .site-nav__toggle {
    display: inline-flex; align-items: center; justify-content: center;
    margin-left: auto; width: 38px; height: 34px; border-radius: 10px; cursor: pointer;
    border: 1px solid rgba(255, 255, 255, 0.9);
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.6));
    box-shadow: inset 0 1px 0 #fff, 0 2px 8px rgba(30, 64, 175, 0.12);
  }
  .site-nav__bars, .site-nav__bars::before, .site-nav__bars::after {
    display: block; width: 16px; height: 2px; border-radius: 2px; background: var(--accent-1);
  }
  .site-nav__bars { position: relative; }
  .site-nav__bars::before, .site-nav__bars::after { content: ''; position: absolute; left: 0; }
  .site-nav__bars::before { top: -5px; }
  .site-nav__bars::after { top: 5px; }
  .site-nav .site-nav__list { display: none; flex-direction: column; align-items: stretch; width: 100%; gap: 2px; padding: 8px 2px 4px; }
  .site-nav.is-open .site-nav__list { display: flex; }
  .site-nav__item { width: 100%; }
  .site-nav__link { width: 100%; font-size: 0.95rem; }
  .site-nav__chev { display: none; }
  .site-nav__menu {
    position: static; opacity: 1; visibility: visible; transform: none; min-width: 0;
    padding: 0 0 6px 14px; background: transparent; border: 0; box-shadow: none;
    -webkit-backdrop-filter: none; backdrop-filter: none;
  }
  .site-nav__sub { padding: 0.4em 0.8em; font-size: 0.86rem; }
}

.lang-toggle {
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.80), rgba(255, 255, 255, 0.46));
  border: 1px solid rgba(255, 255, 255, 0.88);
  box-shadow: inset 0 1px 0 #fff, 0 4px 14px rgba(30, 64, 175, 0.10);
  -webkit-backdrop-filter: blur(16px) saturate(1.6);
  backdrop-filter: blur(16px) saturate(1.6);
}
.lang-toggle__indicator {
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.45), inset 0 -2px 4px rgba(0, 0, 0, 0.12),
              0 2px 8px rgba(30, 64, 175, 0.35);
}

/* ---- Sidebar / profile ---- */
@media (min-width: 1024px) {
  .sidebar {
    background: linear-gradient(160deg, rgba(255, 255, 255, 0.56), rgba(255, 255, 255, 0.34));
    -webkit-backdrop-filter: blur(30px) saturate(1.9);
    backdrop-filter: blur(30px) saturate(1.9);
    border: 1px solid var(--lg-line);
    border-radius: 20px;
    box-shadow: var(--lg-inset), 0 12px 36px rgba(30, 64, 175, 0.10);
  }
  .sidebar::before { display: none; }
}
.author__avatar img {
  padding: 5px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.55));
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: inset 0 1px 0 #fff, 0 10px 28px rgba(30, 64, 175, 0.16);
}
.author__avatar img:hover {
  box-shadow: inset 0 1px 0 #fff, 0 16px 36px rgba(30, 64, 175, 0.22);
}

/* ---- Section headings inside a branch are tier 3: one step smaller than tier 1 ---- */
.page__content .branch > h1 { font-size: 1.42em; margin-top: 1.5em; }
.page__content .branch--venture h1 {
  border-left-color: #d97706;
  background: linear-gradient(110deg, #92400e 0%, #d97706 55%, #f59e0b 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.page__content .branch--venture h1::after { background: linear-gradient(to right, #fcd34d, transparent); }
.page__content .branch--venture .jr-sub-title::before { background: #d97706; }

/* ============================================================
   TIER 2: the lens switch
   ============================================================ */
.tier2 { margin: 2.6em 0 1.4em; }
.tier2__eyebrow {
  font-size: 0.74rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: #64748b;
}
.tier2__lede { margin: 0.35em 0 1.1em; font-size: 1.04rem; line-height: 1.6; color: #334155; }

.lens-switch {
  --lens-tint: var(--tint-academic);
  --lens-x: 8px; --lens-y: 8px; --lens-w: calc(50% - 12px); --lens-h: calc(100% - 16px);
  position: relative; isolation: isolate;
  display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 8px;
  border-radius: 28px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.50), rgba(255, 255, 255, 0.22));
  -webkit-backdrop-filter: blur(20px) saturate(1.6);
  backdrop-filter: blur(20px) saturate(1.6);
  border: 1px solid rgba(255, 255, 255, 0.80);
  box-shadow: var(--lg-inset), 0 14px 36px rgba(30, 64, 175, 0.10);
}
.lens-switch[data-active="venture"] { --lens-tint: var(--tint-venture); }

.lens {
  position: absolute; top: 0; left: 0; z-index: 0; pointer-events: none;
  width: var(--lens-w); height: var(--lens-h);
  transform: translate(var(--lens-x), var(--lens-y));
  border-radius: 20px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.94), rgba(255, 255, 255, 0.64));
  box-shadow: 0 10px 26px rgb(var(--lens-tint) / 0.20), 0 1px 2px rgba(15, 23, 42, 0.06),
              inset 0 1.5px 0 #fff, inset 0 -3px 6px rgb(var(--lens-tint) / 0.10), inset 2px 0 0 rgba(255, 255, 255, 0.6);
  transition: transform 0.6s cubic-bezier(0.3, 1.3, 0.4, 1), width 0.4s var(--ease), height 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
/* refractive rim: a conic sheen masked to a 1px ring */
.lens::before {
  content: ''; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
  background: conic-gradient(from 200deg, rgba(255, 255, 255, 0.95), rgb(var(--lens-tint) / 0.40) 25%,
              rgba(255, 255, 255, 0.92) 50%, rgba(186, 230, 253, 0.7) 75%, rgba(255, 255, 255, 0.95));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
}
/* specular bloom in the top-left of the lens */
.lens::after {
  content: ''; position: absolute; left: 4%; top: 5%; width: 55%; height: 36%; border-radius: 50%;
  background: radial-gradient(ellipse at 35% 35%, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0) 72%);
  filter: blur(1.5px);
}

.lens-tab {
  position: relative; z-index: 1;
  display: grid; gap: 5px; align-content: start; text-align: left;
  padding: 22px 26px 20px; border: 0; border-radius: 20px;
  background: transparent; color: #64748b; cursor: pointer; font: inherit;
  transition: color 0.3s var(--ease);
  -webkit-tap-highlight-color: transparent;
}
.lens-tab:hover { color: #334155; }
.lens-tab.is-active { color: #0f172a; }
.lens-tab:focus-visible { outline: 2px solid rgb(var(--lens-tint) / 0.6); outline-offset: 2px; }
.lens-tab__head { display: flex; align-items: center; gap: 10px; }
.lens-tab__icon {
  font-size: 1.35rem; line-height: 1;
  filter: saturate(0.2) opacity(0.55);
  transition: filter 0.3s var(--ease), transform 0.3s var(--ease);
}
.lens-tab.is-active .lens-tab__icon { filter: none; transform: scale(1.08); }
.lens-tab__title { font-size: 1.4rem; font-weight: 800; letter-spacing: -0.02em; }
.lens-tab__sub { font-size: 0.86rem; line-height: 1.45; }
.lens-tab__stats { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.lens-tab__stats > span {
  padding: 0.24em 0.72em; border-radius: 999px;
  font-size: 0.74rem; font-weight: 700; letter-spacing: 0.01em; color: #64748b;
  background: rgba(255, 255, 255, 0.55); border: 1px solid rgba(255, 255, 255, 0.85);
  box-shadow: inset 0 1px 0 #fff;
  transition: color 0.3s var(--ease), background 0.3s var(--ease), border-color 0.3s var(--ease);
}
.lens-tab.is-active .lens-tab__stats > span {
  color: rgb(var(--lens-tint));
  background: rgb(var(--lens-tint) / 0.10);
  border-color: rgb(var(--lens-tint) / 0.22);
}

/* Fragment scrolling (hash links, scrollIntoView) stops short of the sticky
   masthead, and of the sticky sub-nav inside a branch. */
.anchor, .page__content h1[id] { scroll-margin-top: calc(var(--masthead-h) + 20px); }
.branch .anchor, .branch h1[id] { scroll-margin-top: calc(var(--masthead-h) + 74px); }

/* ============================================================
   TIER 3: branch panes + sticky sub-nav
   ============================================================ */
.branch {
  --tint: var(--tint-academic);
  position: relative; margin: 0 0 2.2em; padding: 0.5em 1.3em 1.4em; border-radius: 22px;
  background: linear-gradient(180deg, rgb(var(--tint) / 0.11), rgb(var(--tint) / 0.035) 30%, rgba(255, 255, 255, 0.08));
  border: 1px solid rgba(255, 255, 255, 0.85);
  box-shadow: var(--lg-inset);
}
.branch--venture { --tint: var(--tint-venture); }
.branch[hidden] { display: none !important; }
.branch.is-entering { animation: branchIn 0.55s var(--ease) both; }
@keyframes branchIn {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: none; }
}

.subnav {
  position: -webkit-sticky; position: sticky;
  top: calc(var(--masthead-h) + 10px); z-index: 6;
  display: flex; gap: 4px; width: -moz-max-content; width: max-content; max-width: 100%;
  overflow-x: auto; margin: 0.9em 0 0.2em; padding: 5px; border-radius: 999px;
  scrollbar-width: none;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.82), rgba(255, 255, 255, 0.54));
  -webkit-backdrop-filter: blur(18px) saturate(1.6);
  backdrop-filter: blur(18px) saturate(1.6);
  border: 1px solid rgba(255, 255, 255, 0.85);
  box-shadow: inset 0 1px 0 #fff, 0 8px 24px rgba(30, 64, 175, 0.10);
}
.subnav::-webkit-scrollbar { display: none; }
.page__content .subnav a {
  flex: 0 0 auto; padding: 0.42em 1em; border-radius: 999px;
  font-size: 0.84rem; font-weight: 600; color: #64748b; white-space: nowrap;
  border-bottom: none; background-image: none;
  transition: background 0.25s var(--ease), color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.page__content .subnav a:hover,
.page__content .subnav a.is-active {
  color: rgb(var(--tint));
  background: linear-gradient(145deg, #fff, rgba(255, 255, 255, 0.7));
  box-shadow: inset 0 1px 0 #fff, 0 2px 8px rgb(var(--tint) / 0.16);
  border-bottom: none;
}

/* ============================================================
   Glass cards. No backdrop-filter here on purpose: they sit on
   the already-frosted pane, so translucency alone reads as glass
   and the page stays cheap to scroll.
   ============================================================ */
.page__content .cv-org,
.page__content .jr-card,
.page__content .vt-hero,
.page__content .vt-product,
.page__content .tl__body,
.page__content .fund-card,
.page__content .press-card,
.page__content .team-card,
.page__content .book-card,
.paper-box {
  position: relative; overflow: hidden; isolation: isolate;
  background: var(--lg-card);
  border: 1px solid var(--lg-line);
  box-shadow: var(--lg-inset), 0 6px 22px rgba(30, 64, 175, 0.07);
}
.page__content .cv-org:hover,
.page__content .jr-card:hover,
.page__content .vt-product:hover,
.page__content .tl__body:hover,
.page__content .fund-card:hover,
.page__content .press-card:hover,
.page__content .team-card:hover,
.paper-box:hover {
  background: var(--lg-card-hover);
  border-color: rgb(var(--tint) / 0.28);
  box-shadow: var(--lg-inset), 0 18px 44px rgba(30, 64, 175, 0.14);
}
.paper-box.sz-visible:hover { animation: none; }
.page__content .book-card:hover { background: var(--lg-card-hover); }

/* cursor-following sheen, driven by --mx/--my from ui-enhance.js */
.lg-card::after {
  content: ''; position: absolute; inset: 0; z-index: -1; border-radius: inherit; pointer-events: none;
  opacity: 0; transition: opacity 0.35s var(--ease);
  background: radial-gradient(260px circle at var(--mx, 50%) var(--my, 50%), rgba(255, 255, 255, 0.85), rgba(255, 255, 255, 0) 62%);
}
.lg-card:hover::after { opacity: 1; }

/* pills and small surfaces */
.page__content .cv-date {
  background: rgba(219, 234, 254, 0.55); border-color: rgba(191, 219, 254, 0.9);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9), 0 1px 2px rgba(30, 64, 175, 0.06);
}
.page__content .cite-badge {
  background: rgba(209, 250, 229, 0.55);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9), 0 1px 2px rgba(5, 150, 105, 0.08);
}
.page__content .review-badge,
.page__content .proc-badge,
.page__content .status-pill,
.page__content .jr-count,
.page__content .book-tag,
.pub-status {
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9), 0 1px 2px rgba(15, 23, 42, 0.05);
}
.page__content .cv-logo {
  background: linear-gradient(145deg, #fff, rgba(255, 255, 255, 0.75));
  border-color: rgba(255, 255, 255, 0.95);
  box-shadow: inset 0 1px 0 #fff, 0 4px 14px rgba(15, 23, 42, 0.07);
}
.page__content .jr-icon {
  background: linear-gradient(145deg, rgba(239, 246, 255, 0.9), rgba(219, 234, 254, 0.8));
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: inset 0 1px 0 #fff;
}
.page__content .book-shelf-intro {
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.6), rgba(255, 255, 255, 0.15));
  border-left-color: #93c5fd;
}
.badge {
  background: linear-gradient(135deg, rgba(30, 64, 175, 0.86), rgba(37, 99, 235, 0.74));
  border: 1px solid rgba(255, 255, 255, 0.45);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.45), 0 3px 10px rgba(30, 64, 175, 0.30);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

/* publication figures: a touch smaller, framed like a slide of glass */
.paper-box .paper-box-image img {
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.10);
}
@media (min-width: 768px) {
  .paper-box .paper-box-image img { max-width: 340px; }
  .paper-box .paper-box-image { max-width: 36%; }
  .paper-box .paper-box-text { max-width: 64%; }
}

/* jump from the Experience card into the venture branch */
.page__content .cv-jump {
  display: inline-flex; align-items: center; gap: 0.5em; margin-top: 10px;
  padding: 0.42em 1em; border-radius: 999px;
  font-size: 0.82em; font-weight: 700; color: #b45309;
  background: linear-gradient(145deg, rgba(255, 251, 235, 0.95), rgba(254, 243, 199, 0.6));
  border: 1px solid rgba(253, 230, 138, 0.9);
  box-shadow: inset 0 1px 0 #fff, 0 2px 8px rgba(217, 119, 6, 0.12);
  border-bottom: none;
  transition: background 0.25s var(--ease), box-shadow 0.25s var(--ease), color 0.25s var(--ease);
}
.page__content .cv-jump:hover {
  color: #92400e;
  background: linear-gradient(145deg, #fff, rgba(254, 243, 199, 0.8));
  box-shadow: inset 0 1px 0 #fff, 0 6px 16px rgba(217, 119, 6, 0.18);
  border-bottom: none;
}
.cv-jump__arrow { transition: transform 0.25s var(--ease); }
.cv-jump:hover .cv-jump__arrow { transform: translateX(3px); }

/* floating controls */
#back-to-top {
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.62));
  color: var(--accent-1);
  border: 1px solid rgba(255, 255, 255, 0.9);
  -webkit-backdrop-filter: blur(16px) saturate(1.6);
  backdrop-filter: blur(16px) saturate(1.6);
  box-shadow: inset 0 1px 0 #fff, 0 8px 24px rgba(30, 64, 175, 0.20);
}
#back-to-top:hover { box-shadow: inset 0 1px 0 #fff, 0 14px 32px rgba(30, 64, 175, 0.28); }
.toast {
  background: rgba(17, 24, 39, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12), 0 12px 32px rgba(0, 0, 0, 0.28);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
  backdrop-filter: blur(18px) saturate(1.4);
}
.copy-cite {
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.65));
  border-color: rgba(255, 255, 255, 0.95);
  box-shadow: inset 0 1px 0 #fff, 0 2px 8px rgba(30, 64, 175, 0.10);
}

/* ============================================================
   Venture branch components
   ============================================================ */
.vt-hero { display: flex; gap: 22px; align-items: flex-start; margin: 14px 0 16px; padding: 20px 24px; border-radius: 16px; }
.vt-hero__logo {
  flex: 0 0 auto; width: 118px; height: 118px; padding: 14px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(145deg, #fff, rgba(255, 255, 255, 0.75));
  border: 1px solid rgba(255, 255, 255, 0.95);
  box-shadow: inset 0 1px 0 #fff, 0 4px 14px rgba(15, 23, 42, 0.07);
}
.vt-hero__logo a { display: flex; width: 100%; height: 100%; align-items: center; justify-content: center; border-bottom: none !important; background-image: none !important; }
.vt-hero__logo img { max-width: 100%; max-height: 100%; object-fit: contain; display: block; }
.vt-hero__body { flex: 1 1 auto; min-width: 0; }
.vt-hero__p { margin: 10px 0 0; font-size: 0.92em; line-height: 1.65; color: #374151; }
.vt-links { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.page__content .vt-link {
  padding: 0.4em 1em; border-radius: 999px; font-size: 0.82em; font-weight: 700;
  color: rgb(var(--tint));
  background: rgba(255, 255, 255, 0.6); border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: inset 0 1px 0 #fff, 0 2px 8px rgb(var(--tint) / 0.10);
  border-bottom: none;
  transition: background 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.page__content .vt-link:hover { background: #fff; box-shadow: inset 0 1px 0 #fff, 0 6px 16px rgb(var(--tint) / 0.18); border-bottom: none; }

.vt-products { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.vt-product { display: flex; gap: 16px; align-items: center; padding: 14px 16px; border-radius: 16px; }
.vt-product__img {
  flex: 0 0 120px; width: 120px; height: 120px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: radial-gradient(circle at 50% 40%, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.35));
}
.vt-product__img img { max-width: 100%; max-height: 100%; object-fit: contain; }
.vt-product__name { font-size: 1.02em; font-weight: 800; color: #111827; }
.vt-product__body p { margin: 5px 0 6px; font-size: 0.86em; line-height: 1.55; color: #4b5563; }
.vt-product__note { font-size: 0.68em; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: #94a3b8; }

/* milestones: a real sequence, so a line with dated stops */
.page__content .tl { list-style: none; position: relative; margin: 0.6em 0 0; padding: 0 0 0 1.7em; }
.page__content .tl::before {
  content: ''; position: absolute; left: 8px; top: 12px; bottom: 12px; width: 2px; border-radius: 2px;
  background: linear-gradient(180deg, rgb(var(--tint) / 0.40), rgb(var(--tint) / 0.08));
}
.page__content .tl__item { position: relative; margin: 0 0 12px; padding: 0; }
.page__content .tl__item::before {
  content: ''; position: absolute; left: -1.7em; top: 15px; width: 14px; height: 14px; margin-left: 2px; border-radius: 50%;
  background: linear-gradient(145deg, #fff, rgba(255, 255, 255, 0.6));
  border: 1px solid rgb(var(--tint) / 0.45);
  box-shadow: inset 0 1px 0 #fff, 0 0 0 4px rgb(var(--tint) / 0.10);
}
.page__content .tl__item--next::before { border-style: dashed; }
.tl__body { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 14px; padding: 12px 16px; border-radius: 14px; }
.tl__date {
  flex: 0 0 auto; padding: 0.2em 0.7em; border-radius: 999px; white-space: nowrap;
  font-size: 0.74em; font-weight: 700; color: rgb(var(--tint));
  background: rgb(var(--tint) / 0.10); border: 1px solid rgb(var(--tint) / 0.22);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
}
.tl__text { flex: 1 1 320px; font-size: 0.92em; line-height: 1.6; color: #374151; }
.tl__text strong { color: #111827; }
.tl__links { display: flex; flex-wrap: wrap; gap: 4px 12px; }
.page__content .tl__links a { font-size: 0.82em; font-weight: 600; white-space: nowrap; }

/* funding and support */
.fund-grid { display: grid; grid-template-columns: 1.1fr 1fr 1fr; gap: 14px; }
.fund-card { padding: 18px 20px; border-radius: 16px; }
.fund-card__kicker { font-size: 0.72em; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: rgb(var(--tint)); }
.fund-card__big { margin: 6px 0 2px; font-size: 2.1em; font-weight: 800; letter-spacing: -0.03em; line-height: 1.1; color: #111827; }
.fund-card__line { font-size: 0.95em; font-weight: 600; color: #1f2937; }
.fund-card__note { margin-top: 10px; font-size: 0.80em; line-height: 1.55; color: #6b7280; }
.page__content .fund-card__list { list-style: none; margin: 8px 0 0; padding: 0; }
.page__content .fund-card__list li { padding: 4px 0; font-size: 0.92em; font-weight: 600; color: #1f2937; border-bottom: 1px dashed rgba(148, 163, 184, 0.35); }
.page__content .fund-card__list li:last-child { border-bottom: none; }

/* press and video */
.press-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 14px; }
.page__content .press-card { display: flex; flex-direction: column; gap: 6px; padding: 16px 18px; border-radius: 16px; color: inherit; border-bottom: none; }
.page__content .press-card:hover { border-bottom: none; }
.press-card__kind { font-size: 0.70em; font-weight: 700; letter-spacing: 0.10em; text-transform: uppercase; color: rgb(var(--tint)); }
.press-card__title { font-size: 0.98em; font-weight: 700; line-height: 1.35; color: #111827; }
.press-card__p { font-size: 0.84em; line-height: 1.55; color: #4b5563; }
.press-card__url { margin-top: auto; font-size: 0.74em; font-weight: 600; color: #94a3b8; }
.press-card--video .press-card__kind::before { content: '\25B6'; margin-right: 0.4em; font-size: 0.8em; }

/* team */
.team-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; margin: 10px 0 8px; }
.team-card { padding: 14px 16px; border-radius: 14px; }
.team-card__name { font-weight: 700; color: #111827; }
.team-card__role { margin-top: 2px; font-size: 0.80em; font-weight: 600; color: rgb(var(--tint)); }
.team-card__p { margin-top: 6px; font-size: 0.84em; line-height: 1.5; color: #4b5563; }

/* ============================================================
   Responsive + accessibility fallbacks
   ============================================================ */
@media (max-width: 900px) {
  .fund-grid { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .vt-products { grid-template-columns: 1fr; }
  .vt-hero { flex-direction: column; }
  .vt-hero__logo { width: 84px; height: 84px; padding: 10px; }
}
@media (max-width: 767px) {
  :root { --lg-blur: 14px; }
  .page { border-radius: 14px; }
  .branch { padding: 0.2em 0.7em 0.9em; border-radius: 14px; }
  .subnav { top: calc(var(--masthead-h) + 6px); }
  .tier2 { margin: 1.8em 0 1em; }
}
@media (max-width: 640px) {
  .lens-switch { grid-template-columns: 1fr; --lens-w: calc(100% - 12px); --lens-h: calc(50% - 9px); }
  .lens-tab { padding: 14px 16px 12px; }
  .lens-tab__title { font-size: 1.12rem; }
}
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .page, .masthead, .sidebar, .lens-switch, .subnav, .lang-toggle, #back-to-top { background: rgba(255, 255, 255, 0.95); }
}
@media (prefers-reduced-transparency: reduce) {
  .page, .masthead, .sidebar, .lens-switch, .subnav, .lang-toggle, #back-to-top { background: rgba(255, 255, 255, 0.97); }
  .bg-orb { opacity: 0.08; animation: none; }
}
@media (prefers-reduced-motion: reduce) {
  .lens { transition: none; }
  .branch.is-entering { animation: none; }
  .bg-orb { animation: none; }
  .lg-card::after { transition: none; }
}

/* ============================================================
   Intro panel: the opening lines on one large sheet of glass
   ============================================================ */
.page__content .intro-panel {
  position: relative; margin: 0.2em 0 1.4em; padding: 16px 22px 14px; border-radius: 18px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.58), rgba(255, 255, 255, 0.28));
  border: 1px solid rgba(255, 255, 255, 0.92);
  box-shadow: var(--lg-inset), 0 10px 30px rgba(30, 64, 175, 0.08);
}
.page__content .intro-panel p { margin: 0.45em 0; }

/* ============================================================
   Reading list: a compact shelf. Categories flow side by side,
   covers are small, tags are dropped.
   ============================================================ */
.page__content .reading-shelf { display: flex; flex-wrap: wrap; gap: 12px 16px; align-items: flex-start; }
.page__content .book-category {
  flex: 0 1 auto; max-width: 100%; margin: 0; padding: 10px 12px 8px; border-radius: 16px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0.26));
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: var(--lg-inset);
}
.page__content .book-cat-label { margin-bottom: 8px; padding-bottom: 6px; font-size: 0.64em; border-bottom: 1px solid rgba(255, 255, 255, 0.75); }
.page__content .book-grid { display: flex; flex-wrap: wrap; gap: 8px; }
.page__content .book-card {
  width: 92px; border-radius: 10px;
  background: rgba(255, 255, 255, 0.7);
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.10), inset 0 1px 0 #fff;
}
.page__content .book-card:hover { transform: translateY(-5px) scale(1.02); box-shadow: 0 10px 24px rgba(15, 23, 42, 0.16); }
.page__content .book-cover-wrap { padding-top: 148%; }
.page__content .book-meta { padding: 6px 7px 7px; }
.page__content .book-title { font-size: 0.62em; line-height: 1.3; margin-bottom: 2px; }
.page__content .book-author { font-size: 0.58em; margin-bottom: 0; }
.page__content .book-tags { display: none; }
.page__content .book-ph-initial { font-size: 1.5em; margin-bottom: 4px; }
.page__content .book-ph-name { font-size: 0.48em; }
.page__content .book-shelf-intro { margin: 0 0 14px; padding: 10px 16px; font-size: 0.9em; line-height: 1.7; }
@media (max-width: 480px) {
  .page__content .book-category { flex: 1 1 100%; }
  .page__content .book-card { width: calc(33.333% - 6px); }
}

/* ============================================================
   CALM BLUE — the original blue accents on a quieter cool-grey
   wallpaper, with the geek type roles kept.
   ============================================================ */
:root {
  --font-body: 'IBM Plex Sans', 'PingFang SC', 'Hiragino Sans GB', 'Noto Sans SC', system-ui, sans-serif;
  --font-display: 'Space Grotesk', 'PingFang SC', 'Hiragino Sans GB', 'Noto Sans SC', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Menlo, Consolas, monospace;
}
html { background: #eef1f6; }
body {
  font-family: var(--font-body);
  background-color: #eef1f6;
  background-image:
    linear-gradient(rgba(30, 41, 59, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 41, 59, 0.05) 1px, transparent 1px),
    radial-gradient(1200px 700px at 8% -8%, rgba(219, 234, 254, 0.85), transparent 60%),
    linear-gradient(160deg, #f3f5f9 0%, #eef1f6 55%, #ecf1f6 100%);
  background-size: 48px 48px, 48px 48px, auto, auto;
}

/* type roles */
h1, h2, h3, .site-nav__home, .lens-tab__title, .cv-title, .vt-product__name, .press-card__title,
.team-card__name, .pub-title, .fund-card__big, .author__name, .jr-name, .jr-sub-title, .book-title {
  font-family: var(--font-display);
}
.tier2__eyebrow, .lens-tab__stats > span, .subnav a, .site-nav__sub, .cv-date, .cv-place, .cite-badge,
.review-badge, .proc-badge, .status-pill, .badge, .pub-status, .jr-count, .tl__date, .fund-card__kicker,
.press-card__kind, .press-card__url, .vt-product__note, .book-cat-label, .team-card__role, .lang-toggle,
.page__content li em, .page__content p > em, .copy-cite, .toast {
  font-family: var(--font-mono);
}
.page__content .subnav a, .site-nav__sub { font-weight: 500; letter-spacing: 0.01em; }
.tier2__eyebrow::before { content: '// '; color: var(--accent-2); }

/* The theme's greedy-nav script targets #site-nav and hides its button;
   keep our phone menu button visible regardless. */
@media (max-width: 900px) {
  .site-nav .site-nav__toggle { display: inline-flex !important; visibility: visible !important; }
  .site-nav .site-nav__menu { background: transparent; border: 0; box-shadow: none; }
  .masthead { background: linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(255, 255, 255, 0.72)); }
}