/* Thomas Yu — personal site.
   Same footing as frc5805.com: a near-black studio, Clash Display for headings,
   Plus Jakarta Sans for reading, one accent used sparingly. */

:root {
  color-scheme: dark;

  --bg: #08080a;
  --surface: #111215;
  --surface-2: #17181c;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);

  --text: #f3f3f1;
  --body: #c3c4c8;
  --muted: #8b8d94;
  --faint: #5d6068;

  /* goldfinch yellow: links, figures, nothing decorative */
  --accent: #e6c25a;
  --accent-soft: rgba(230, 194, 90, 0.14);

  --font-display: 'Clash Display', 'Segoe UI', system-ui, sans-serif;
  --font-body: 'Plus Jakarta Sans', 'Segoe UI', system-ui, sans-serif;
  --font-mono: ui-monospace, 'SFMono-Regular', 'Cascadia Code', Menlo, monospace;

  --maxw: 1240px;
  --gutter: clamp(16px, 5vw, 56px);
  --nav-h: 64px;
  --r: 12px;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 16px);
  -webkit-text-size-adjust: 100%;
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--body);
  font: 400 1.0625rem/1.65 var(--font-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
::selection { background: var(--accent); color: #0b0b0b; }

/* scrollbars: thin and dark, never the platform's grey slab */
html { scrollbar-color: #2a2c31 var(--bg); scrollbar-width: thin; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #2a2c31; border-radius: 10px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: #3a3d44; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--text);
  margin: 0;
  letter-spacing: -0.01em;
}

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  height: var(--nav-h);
  background: rgba(8, 8, 10, 0.72);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s;
}
.nav.scrolled { border-bottom-color: var(--line); }
.nav-in {
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
  height: 100%;
  display: flex;
  align-items: center;
  gap: 32px;
}
.mark {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--text);
  text-decoration: none;
  margin-right: auto;
}
.nav-links { display: flex; gap: 28px; }
.nav-links a, .nav-mail {
  font-size: 0.9375rem;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}
.nav-links a:hover, .nav-mail:hover, .nav-links a.on { color: var(--text); }
.nav-mail {
  color: var(--text);
  padding: 7px 16px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
}
.nav-mail:hover { border-color: var(--text); }

/* ---------- Hero ---------- */
.hero { padding-top: clamp(56px, 11vh, 128px); }
.hero-name {
  font-size: clamp(3.6rem, 15vw, 12.5rem);
  line-height: 0.88;
  letter-spacing: -0.035em;
  font-weight: 600;
  margin-left: -0.04em;
}
.hero-row {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: clamp(32px, 6vw, 96px);
  margin-top: clamp(36px, 6vw, 64px);
  align-items: start;
}
.hero-lede {
  font-size: clamp(1.15rem, 1.7vw, 1.4rem);
  line-height: 1.55;
  color: var(--text);
  margin: 0;
  max-width: 38ch;
  text-wrap: pretty;
}
.hero-facts { margin: 0; display: grid; gap: 0; }
.hero-facts div {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 16px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}
.hero-facts div:last-child { border-bottom: 1px solid var(--line); }
.hero-facts dt { color: var(--faint); font-size: 0.875rem; padding-top: 1px; }
.hero-facts dd { margin: 0; font-size: 0.9375rem; color: var(--body); overflow-wrap: anywhere; }
.hero-facts a { color: var(--accent); text-decoration: none; }
.hero-facts a:hover { text-decoration: underline; }

/* three-picture index under the hero */
.strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: clamp(56px, 8vw, 96px);
}
.strip-item { text-decoration: none; display: block; }
.strip-pic {
  aspect-ratio: 16 / 10;
  border-radius: var(--r);
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
}
.strip-pic img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.strip-item:hover .strip-pic img { transform: scale(1.035); }
.strip-board { background: #1b2a20; }
.strip-board img { object-fit: contain; padding: 6%; }
.strip-orni { display: grid; place-items: center; color: var(--muted); }
.strip-orni svg { width: 82%; height: auto; }
.strip-orni svg text { fill: var(--body); }
.strip-orni svg g:first-child { color: var(--faint); }
.strip-item:hover .strip-orni svg g:first-child { color: var(--accent); }
.strip-orni svg g { transition: color 0.3s; }
.strip-cap {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 12px;
  font-size: 0.875rem;
  color: var(--faint);
}
.strip-cap b { color: var(--text); font-weight: 600; }

/* ---------- Sections ---------- */
.sec {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  gap: clamp(24px, 4vw, 64px);
  padding-block: clamp(80px, 11vw, 144px);
  position: relative;
}
/* divider spans the content, not the gutters */
.sec::before {
  content: '';
  position: absolute;
  top: 0;
  left: var(--gutter);
  right: var(--gutter);
  height: 1px;
  background: var(--line);
}
.sec-wide::before { display: none; }
.hero { padding-bottom: clamp(80px, 11vw, 144px); }
.sec-wide { display: block; padding-top: 0; }
.sec-grid {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  gap: clamp(24px, 4vw, 64px);
  padding-top: clamp(56px, 7vw, 96px);
}
.sec-head { align-self: start; position: sticky; top: calc(var(--nav-h) + 32px); }
.sec-label {
  margin: 0 0 10px;
  font-size: 0.875rem;
  color: var(--accent);
  font-weight: 500;
}
.sec h2 { font-size: clamp(2.1rem, 4.2vw, 3.5rem); line-height: 1.02; }
.sec-body { min-width: 0; max-width: 760px; }
.sec-body > p { margin: 0 0 1.1em; text-wrap: pretty; }
.lead {
  font-size: clamp(1.15rem, 1.6vw, 1.3rem) !important;
  line-height: 1.55;
  color: var(--text);
}
.note, .small { color: var(--muted); }
.small { font-size: 0.875rem; }
.small a { color: var(--accent); }

.links { display: flex; flex-wrap: wrap; gap: 10px 26px; margin: 24px 0 0 !important; }
.links a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9375rem;
  border-bottom: 1px solid rgba(230, 194, 90, 0.35);
  padding-bottom: 1px;
  transition: border-color 0.2s;
}
.links a:hover { border-bottom-color: var(--accent); }

/* ---------- Figures (numbers) ---------- */
.figures {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  margin: 40px 0;
  border-top: 1px solid var(--line);
}
.figures-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 32px; }
.figures div { padding: 20px 20px 4px 0; }
.figures div + div { padding-left: 20px; border-left: 1px solid var(--line); }
.figures dt {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.9rem, 3.4vw, 2.75rem);
  line-height: 1;
  color: var(--text);
  letter-spacing: -0.02em;
}
.figures dd { margin: 10px 0 0; font-size: 0.8125rem; line-height: 1.45; color: var(--muted); }

/* ---------- Ornimetrics pipeline ---------- */
.pipeline {
  margin: 40px 0 0;
  display: grid;
  grid-template-columns: 0.8fr 1fr 1.1fr 1.1fr;
  gap: 28px;
  align-items: center;
  position: relative;
}
.pl-col { position: relative; display: grid; gap: 10px; }
/* connector to the next column */
.pl-col:not(.pl-heads)::after {
  content: '';
  position: absolute;
  top: 50%;
  right: -28px;
  width: 28px;
  height: 1px;
  background: var(--line-strong);
}
.pl-heads { border-left: 1px solid var(--line-strong); padding-left: 0; margin-left: 0; }
.pl-heads .pl-box { margin-left: 14px; position: relative; }
.pl-heads .pl-box::before {
  content: '';
  position: absolute;
  left: -15px;
  top: 50%;
  width: 14px;
  height: 1px;
  background: var(--line-strong);
}
.pl-box {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 14px;
}
.pl-box b { display: block; color: var(--text); font-weight: 600; font-size: 0.9375rem; }
.pl-box span { display: block; font-size: 0.8125rem; line-height: 1.45; color: var(--muted); margin-top: 3px; }
.pipeline figcaption {
  grid-column: 1 / -1;
  font-size: 0.875rem;
  color: var(--muted);
  margin-top: 6px;
}

.paper {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 28px 0;
  margin: 0 0 32px;
}
.paper p { margin: 0; }
.paper-venue { font-size: 0.875rem; color: var(--muted); }
.paper-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.25rem, 2vw, 1.6rem);
  line-height: 1.25;
  color: var(--text);
  margin: 12px 0 10px !important;
  text-wrap: balance;
}
.paper-authors { font-size: 0.9375rem; }
.paper .links { margin-top: 18px !important; }

/* ---------- Robotics ---------- */
.bleed { margin: 0; }
.bleed img {
  width: 100%;
  height: clamp(320px, 62vw, 760px);
  object-fit: cover;
  object-position: 50% 60%;
}
.bleed figcaption, .shot figcaption {
  font-size: 0.8125rem;
  color: var(--faint);
  padding-top: 12px;
}
.code {
  margin: 28px 0 0;
  padding: 22px 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r);
  font: 0.875rem/1.7 var(--font-mono);
  color: var(--body);
  overflow-x: auto;
}
.code .c { color: var(--faint); }
.code .k { color: #9fb7e8; }
.code .n { color: var(--accent); }

.shot { margin: 0 0 36px; }
.shot img { border-radius: var(--r); border: 1px solid var(--line); width: 100%; }
.shot-board img { background: #1b2a20; padding: 4%; }
.shot-board { margin-bottom: 40px; }

.plain-list { list-style: none; margin: 0 0 40px; padding: 0; }
.plain-list li {
  padding: 14px 0;
  border-top: 1px solid var(--line);
  font-size: 0.9375rem;
  color: var(--muted);
}
.plain-list li:last-child { border-bottom: 1px solid var(--line); }
.plain-list b { display: block; color: var(--text); font-weight: 600; margin-bottom: 2px; }
.plain-list a { color: var(--accent); text-decoration: none; margin-left: 4px; white-space: nowrap; }
.plain-list a:hover { text-decoration: underline; }

.results { margin: 0; }
.results div {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 16px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}
.results div:last-child { border-bottom: 1px solid var(--line); }
.results dt { color: var(--faint); font-variant-numeric: tabular-nums; font-size: 0.9375rem; }
.results dd { margin: 0; color: var(--body); font-size: 0.9375rem; }
.results-lg div { padding: 16px 0; }
.results-lg dd { font-size: 1rem; color: var(--text); }

/* ---------- Other work ---------- */
.work {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 40px;
}
.work li { padding: 26px 0 30px; border-top: 1px solid var(--line); }
.work h3 { font-size: 1.3rem; font-weight: 500; margin-bottom: 8px; }
.work p { margin: 0; font-size: 0.9375rem; color: var(--muted); text-wrap: pretty; }
.work .links { margin-top: 14px !important; }

/* ---------- Channel ---------- */
.vids {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px 16px;
  margin-bottom: 16px;
}
.vids:empty { display: none; }
.vid { text-decoration: none; display: block; }
.vid-thumb {
  position: relative;
  aspect-ratio: 16 / 10;
  border-radius: 10px;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
}
.vid-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s cubic-bezier(0.2, 0.7, 0.2, 1); }
.vid:hover .vid-thumb img { transform: scale(1.04); }
.vid-len {
  position: absolute;
  right: 6px;
  bottom: 6px;
  font-size: 0.75rem;
  padding: 1px 6px;
  border-radius: 5px;
  background: rgba(0, 0, 0, 0.72);
  color: #fff;
  font-variant-numeric: tabular-nums;
}
.vid-title {
  margin-top: 10px;
  font-size: 0.875rem;
  line-height: 1.45;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.vid-meta { font-size: 0.8125rem; color: var(--faint); margin-top: 4px; }

/* ---------- Contact ---------- */
.contact .links { margin-top: 32px !important; }
.contact .small { margin-top: 20px; }
.big-mail {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.4rem, 4vw, 2.75rem);
  color: var(--text);
  text-decoration: none;
  border-bottom: 2px solid var(--accent);
  padding-bottom: 4px;
  overflow-wrap: anywhere;
  transition: color 0.2s;
}
.big-mail:hover { color: var(--accent); }

.foot {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-block: 32px 40px;
  background: linear-gradient(var(--line), var(--line)) var(--gutter) 0 / calc(100% - 2 * var(--gutter)) 1px no-repeat;
  font-size: 0.875rem;
  color: var(--faint);
}

/* ---------- Reveal ---------- */
.rv { opacity: 0; transform: translateY(18px); transition: opacity 0.7s ease, transform 0.8s cubic-bezier(0.2, 0.7, 0.2, 1); }
.rv.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .rv { opacity: 1; transform: none; transition: none; } }

/* ---------- Tablet ---------- */
@media (max-width: 980px) {
  .nav-links { display: none; }
  .hero-row { grid-template-columns: 1fr; }
  .sec, .sec-grid { grid-template-columns: 1fr; gap: 20px; }
  .sec-head { position: static; }
  .sec-body { max-width: none; }
  .pipeline { grid-template-columns: 1fr 1fr; }
  .pl-col:nth-child(2)::after { display: none; }
  .pl-heads { grid-column: 1 / -1; border-left: 0; grid-template-columns: repeat(3, 1fr); }
  .pl-heads .pl-box { margin-left: 0; }
  .pl-heads .pl-box::before { display: none; }
}

/* ---------- Phone ---------- */
@media (max-width: 640px) {
  :root { --nav-h: 56px; }
  body { font-size: 1rem; }
  .hero { padding-top: 40px; }
  .hero-name { font-size: clamp(3.4rem, 19vw, 5.5rem); line-height: 0.9; }
  .hero-facts div { grid-template-columns: 80px 1fr; }

  /* the three pictures become a swipeable row, one and a bit on screen */
  .strip {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    margin-inline: calc(var(--gutter) * -1);
    padding-inline: var(--gutter);
    scroll-padding-inline: var(--gutter);
    scrollbar-width: none;
  }
  .strip::-webkit-scrollbar { display: none; }
  .strip-item { flex: 0 0 78%; scroll-snap-align: start; }

  .figures { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .figures div:nth-child(3) { padding-left: 0; border-left: 0; }
  .figures div:nth-child(n + 3) { border-top: 1px solid var(--line); }
  .figures-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .figures-3 div:nth-child(3) { padding-left: 14px; border-left: 1px solid var(--line); border-top: 0; }
  .figures div + div { padding-left: 14px; }
  .figures div { padding-right: 8px; }

  .pipeline { grid-template-columns: 1fr; gap: 14px; }
  .pl-col::after { display: none; }
  .pl-col:not(.pl-heads)::after {
    display: block;
    top: auto;
    bottom: -14px;
    right: auto;
    left: 24px;
    width: 1px;
    height: 14px;
  }
  .pl-heads { grid-template-columns: 1fr; }

  .bleed img { height: 62vw; min-height: 260px; }
  .work { grid-template-columns: 1fr; }
  .vids { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .vids .vid:nth-child(n + 5) { display: none; }
  .foot { flex-direction: column; gap: 4px; }
  .code { font-size: 0.8125rem; padding: 18px; }
}

/* =====================================================================
   Subpages and shared components
   ===================================================================== */

/* ---------- Nav: menu on narrow screens ---------- */
.menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--line-strong);
  color: var(--text);
  border-radius: 999px;
  font: 500 0.9375rem var(--font-body);
  padding: 7px 16px;
  cursor: pointer;
}
.nav-sheet {
  display: none;
  position: absolute;
  top: var(--nav-h);
  left: 0;
  right: 0;
  background: rgba(10, 10, 12, 0.97);
  border-bottom: 1px solid var(--line);
  padding: 8px var(--gutter) 20px;
}
.nav-sheet a {
  display: block;
  padding: 14px 0;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}
.nav-sheet a:last-child { border-bottom: 0; }
.nav-sheet a[aria-current='page'] { color: var(--accent); }
.nav.open .nav-sheet { display: block; }
.nav-links a[aria-current='page'] { color: var(--text); }
@media (max-width: 980px) {
  .menu-btn { display: inline-block; }
  .nav-mail { display: none; }
}

/* ---------- 3D stage ---------- */
.stage {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: var(--r);
  background:
    radial-gradient(70% 60% at 50% 42%, rgba(255, 255, 255, 0.045), transparent 70%),
    var(--surface);
  border: 1px solid var(--line);
  overflow: hidden;
}
.stage canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
  touch-action: pan-y;
  opacity: 0;
  transition: opacity 0.6s ease;
}
.stage canvas:active { cursor: grabbing; }
.stage[data-state='ready'] canvas { opacity: 1; }
.stage > img.stage-fallback {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: opacity 0.6s ease;
}
.stage[data-state='ready'] > img.stage-fallback { opacity: 0; }
.stage-load {
  position: absolute;
  left: 24%;
  right: 24%;
  bottom: 22px;
  height: 2px;
  background: var(--line);
  border-radius: 2px;
  overflow: hidden;
  transition: opacity 0.4s;
}
.stage-load span { display: block; height: 100%; background: var(--accent); transform-origin: left; transform: scaleX(0.04); transition: transform 0.2s; }
.stage[data-state='ready'] .stage-load, .stage[data-state='failed'] .stage-load { opacity: 0; }
.stage-tall { aspect-ratio: 4 / 3; }
.stage-wide { aspect-ratio: 21 / 9; }
.stage-cap { font-size: 0.8125rem; color: var(--faint); margin-top: 12px; }

/* ---------- Subpage hero ---------- */
.crumb {
  display: inline-block;
  font-size: 0.875rem;
  color: var(--muted);
  text-decoration: none;
  margin-bottom: 28px;
}
.crumb:hover { color: var(--text); }
.page-hero { padding-top: clamp(48px, 9vh, 112px); padding-bottom: clamp(56px, 8vw, 104px); }
.page-title {
  font-size: clamp(3rem, 10vw, 8.5rem);
  line-height: 0.92;
  letter-spacing: -0.03em;
  margin-left: -0.03em;
}
.page-lede {
  font-size: clamp(1.2rem, 2vw, 1.55rem);
  line-height: 1.5;
  color: var(--text);
  max-width: 34ch;
  margin: clamp(24px, 3vw, 36px) 0 0;
  text-wrap: pretty;
}
.page-hero .hero-row { margin-top: clamp(28px, 4vw, 48px); }
.page-hero .stage, .page-hero .hero-media { margin-top: clamp(40px, 6vw, 72px); }
.hero-media img { width: 100%; border-radius: var(--r); border: 1px solid var(--line); }

/* ---------- Home: the work index ---------- */
.index {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(16px, 2.4vw, 28px);
  margin-top: clamp(56px, 8vw, 96px);
}
.card {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  border-radius: var(--r);
  background: var(--surface);
  border: 1px solid var(--line);
  overflow: hidden;
  transition: border-color 0.25s;
}
.card:hover { border-color: var(--line-strong); }
.card-media { aspect-ratio: 16 / 10; overflow: hidden; position: relative; background: #0c0d0f; }
.card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1); }
.card:hover .card-media img { transform: scale(1.03); }
.card-media .stage { border: 0; border-radius: 0; aspect-ratio: auto; height: 100%; }
.card-body { padding: 22px 24px 24px; display: grid; gap: 6px; }
.card-kicker { font-size: 0.8125rem; color: var(--accent); font-weight: 500; }
.card h3 { font-size: clamp(1.5rem, 2.4vw, 2rem); font-weight: 600; line-height: 1.1; }
.card p { margin: 4px 0 0; font-size: 0.9375rem; color: var(--muted); text-wrap: pretty; }
.card-go { margin-top: 10px; font-size: 0.9375rem; color: var(--text); font-weight: 500; }
.card-go::after { content: ' →'; }
.card-lg { grid-column: 1 / -1; display: grid; grid-template-columns: 1.5fr 1fr; }
.card-lg .card-media { aspect-ratio: auto; min-height: 360px; }
.card-lg .card-body { align-content: end; padding: 32px; }

/* ---------- Split: text beside media ---------- */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
}
.split-rev > :first-child { order: 2; }
.split h3 { font-size: clamp(1.6rem, 3vw, 2.4rem); line-height: 1.08; margin-bottom: 14px; }
.split p { margin: 0 0 1em; }
.split + .split { margin-top: clamp(64px, 9vw, 120px); }

/* ---------- Specs ---------- */
.specs { margin: 24px 0 0; }
.specs div {
  display: grid;
  grid-template-columns: minmax(110px, 0.42fr) 1fr;
  gap: 16px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
  font-size: 0.9375rem;
}
.specs div:last-child { border-bottom: 1px solid var(--line); }
.specs dt { color: var(--faint); }
.specs dd { margin: 0; color: var(--body); }

/* ---------- Table ---------- */
.table-wrap { overflow-x: auto; margin: 28px 0; border: 1px solid var(--line); border-radius: var(--r); }
.table { width: 100%; border-collapse: collapse; font-size: 0.9375rem; min-width: 640px; }
.table th, .table td { text-align: left; padding: 14px 18px; border-bottom: 1px solid var(--line); vertical-align: top; }
.table tr:last-child td { border-bottom: 0; }
.table th { font-weight: 500; color: var(--faint); font-size: 0.8125rem; background: var(--surface); }
.table td:first-child { color: var(--text); font-weight: 600; white-space: nowrap; }
.table code { font: 0.8125rem var(--font-mono); color: var(--accent); }

/* ---------- Bars (data from the paper) ---------- */
.bars { margin: 24px 0 8px; display: grid; gap: 14px; }
.bar { display: grid; grid-template-columns: 96px 1fr 52px; gap: 14px; align-items: center; font-size: 0.9375rem; }
.bar-track { height: 10px; background: var(--surface-2); border-radius: 5px; overflow: hidden; }
.bar-fill { height: 100%; background: var(--accent); border-radius: 5px; }
.bar-total .bar-fill { background: var(--text); }
.bar b { color: var(--text); font-weight: 600; text-align: right; font-variant-numeric: tabular-nums; }
.chart-title { font-size: 0.9375rem; color: var(--text); font-weight: 600; margin: 36px 0 0 !important; }
.chart-note { font-size: 0.8125rem; color: var(--faint); margin: 10px 0 0 !important; }

/* ---------- Gallery ---------- */
.gallery {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
}
.gallery figure { margin: 0; grid-column: span 2; }
.gallery .g-wide { grid-column: span 4; }
.gallery .g-half { grid-column: span 3; }
.gallery img { width: 100%; object-fit: cover; border-radius: 10px; aspect-ratio: 4 / 3; }
.gallery .g-wide img { aspect-ratio: 16 / 9.4; }
.gallery figcaption { font-size: 0.8125rem; color: var(--faint); padding-top: 8px; }

/* ---------- Robot lineage ---------- */
.robots { display: grid; gap: clamp(64px, 9vw, 120px); }
.robot { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: clamp(24px, 4vw, 56px); align-items: center; }
.robot:nth-child(even) > :first-child { order: 2; }
.robot-meta { font-size: 0.875rem; color: var(--accent); margin: 0 0 8px; font-weight: 500; }
.robot h3 { font-size: clamp(2.2rem, 4.4vw, 3.4rem); line-height: 1; margin-bottom: 16px; }
.robot p { margin: 0 0 1em; }
.robot .photo { border-radius: var(--r); overflow: hidden; border: 1px solid var(--line); }
.robot .photo img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }

/* ---------- Feature grid ---------- */
.features { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 40px; margin-top: 8px; }
.features > div { padding: 24px 0 28px; border-top: 1px solid var(--line); }
.features h3 { font-size: 1.25rem; font-weight: 500; margin-bottom: 8px; }
.features p { margin: 0; font-size: 0.9375rem; color: var(--muted); text-wrap: pretty; }
code.inl { font: 0.875em var(--font-mono); color: var(--text); background: var(--surface-2); padding: 1px 6px; border-radius: 5px; }

.callout {
  border-left: 2px solid var(--accent);
  padding: 4px 0 4px 20px;
  margin: 32px 0;
  color: var(--body);
}
.callout b { color: var(--text); }

.next-page {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 24px;
  padding-block: 56px 72px;
  text-decoration: none;
  position: relative;
}
.next-page::before { content: ''; position: absolute; top: 0; left: var(--gutter); right: var(--gutter); height: 1px; background: var(--line); }
.next-page span { color: var(--muted); font-size: 0.875rem; }
.next-page b {
  display: block;
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--text);
  font-size: clamp(2rem, 5vw, 3.75rem);
  line-height: 1;
  margin-top: 8px;
  transition: color 0.2s;
}
.next-page:hover b { color: var(--accent); }
.next-page i { font-style: normal; font-size: clamp(2rem, 5vw, 3.75rem); color: var(--muted); }

/* ---------- Catalyst page: Catalyst's own signal colour (FrcCatalyst docs/assets/identity.css) ---------- */
.theme-catalyst {
  --accent: #e94560;
  --accent-soft: rgba(233, 69, 96, 0.14);
}
.theme-catalyst ::selection { background: #e94560; color: #fff; }
.theme-catalyst .links a { border-bottom-color: rgba(233, 69, 96, 0.4); }
.cat-banner { width: 100%; border-radius: 14px; display: block; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .card-lg { grid-template-columns: 1fr; }
  .card-lg .card-media { min-height: 0; aspect-ratio: 16 / 10; }
  .split, .robot { grid-template-columns: 1fr; }
  .split-rev > :first-child, .robot:nth-child(even) > :first-child { order: 0; }
  .gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gallery figure, .gallery .g-half { grid-column: span 1; }
  .gallery .g-wide { grid-column: span 2; }
}
@media (max-width: 640px) {
  .index { grid-template-columns: 1fr; }
  .features { grid-template-columns: 1fr; }
  .page-title { font-size: clamp(2.9rem, 15vw, 4.5rem); }
  .stage, .stage-wide { aspect-ratio: 4 / 3; }
  .card-lg .card-body { padding: 22px 24px 24px; }
  .bar { grid-template-columns: 76px 1fr 44px; gap: 10px; }
  .next-page { padding-block: 40px 56px; }
}

/* the Ornimetrics card draws its pipeline instead of a photo */
.card-orni { display: grid; place-items: center; color: var(--faint); }
.card-orni svg { width: 78%; height: auto; }
.card-orni text { fill: var(--body); }
.card:hover .card-orni { color: var(--accent); }
.card-orni { transition: color 0.3s; }

/* polish */
.table code { white-space: nowrap; }
.specs a, .plain-list a { color: var(--accent); text-decoration: none; }
.specs a:hover { text-decoration: underline; }
.hero:has(.index) { padding-bottom: clamp(64px, 8vw, 112px); }

/* ---------- Scroll-driven stage (assets/scrolly.js) ---------- */
.scrolly { position: relative; }
.scrolly-stage {
  position: sticky;
  top: 0;
  height: 100vh;
  height: 100svh;
  overflow: hidden;
  z-index: 0;
}
.scrolly-stage canvas { width: 100%; height: 100%; display: block; opacity: 0; transition: opacity 0.8s ease; }
.scrolly[data-state='ready'] .scrolly-stage canvas { opacity: 1; }
.scrolly-labels { position: absolute; inset: 0; pointer-events: none; }
.scrolly-label {
  position: absolute;
  left: 0;
  top: 0;
  opacity: 0;
  transition: opacity 0.3s;
  will-change: transform;
}
.scrolly-label i {
  position: absolute;
  left: -4px;
  top: -4px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 1.5px solid var(--accent);
  background: var(--bg);
}
.scrolly-label span {
  position: absolute;
  left: 14px;
  top: -10px;
  white-space: nowrap;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text);
  padding-left: 26px;
  background: linear-gradient(var(--accent), var(--accent)) left 50% / 20px 1px no-repeat;
}
.scrolly-label.left span { left: auto; right: 14px; padding-left: 0; padding-right: 26px; background-position: right 50%; }
.scrolly-panels { position: relative; z-index: 1; margin-top: -100vh; margin-top: -100svh; pointer-events: none; }
.scrolly-panel {
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.scrolly-panel[data-side='right'] { justify-content: flex-end; }
.scrolly-box {
  pointer-events: auto;
  width: min(420px, 100%);
  padding: 28px 30px;
  border-radius: var(--r);
  background: rgba(13, 14, 17, 0.72);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border: 1px solid var(--line);
}
.scrolly-box .sec-label { margin-bottom: 8px; }
.scrolly-box h3 { font-size: clamp(1.7rem, 3vw, 2.4rem); line-height: 1.05; margin-bottom: 12px; }
.scrolly-box p { margin: 0 0 0.8em; font-size: 0.9875rem; }
.scrolly-box p:last-child { margin-bottom: 0; }
.scrolly-box ul { list-style: none; margin: 14px 0 0; padding: 0; }
.scrolly-box li { display: flex; justify-content: space-between; gap: 16px; padding: 9px 0; border-top: 1px solid var(--line); font-size: 0.875rem; }
.scrolly-box li b { color: var(--text); font-weight: 500; }
.scrolly-box li span { color: var(--muted); text-align: right; }
.scrolly-panel:first-child { min-height: 100vh; }
.scrolly-panel:last-child { min-height: 110vh; }
@media (max-width: 860px) {
  .scrolly-stage { height: 56vh; height: 56svh; top: var(--nav-h); }
  .scrolly-panels { margin-top: 0; }
  .scrolly-panel, .scrolly-panel:first-child, .scrolly-panel:last-child { min-height: 80svh; align-items: flex-end; justify-content: center !important; padding-bottom: 8svh; }
  .scrolly-box { width: 100%; background: rgba(13, 14, 17, 0.9); }
}

/* ---------- Spline scenes (assets/media.js) ----------
   Spline renders on its own dark grey; the stage takes the same grey and fades its edges into the
   page, so a scene reads as part of the page rather than a box pasted on it. */
.spline {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #2c2d31;
  border-radius: var(--r);
  overflow: hidden;
  -webkit-mask-image: radial-gradient(ellipse 72% 70% at 50% 50%, #000 62%, transparent 100%);
  mask-image: radial-gradient(ellipse 72% 70% at 50% 50%, #000 62%, transparent 100%);
}
.spline[hidden] { display: none; }
.spline iframe, .spline spline-viewer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
  opacity: 0;
  transition: opacity 0.8s ease;
}
.spline[data-state='ready'] iframe, .spline[data-state='ready'] spline-viewer { opacity: 1; }
.spline-poster { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.35; filter: grayscale(0.4) brightness(0.7); transition: opacity 0.8s; }
.spline[data-state='ready'] .spline-poster { opacity: 0; }
.spline-hero { aspect-ratio: 21 / 10; margin-top: clamp(40px, 6vw, 72px); }

.photo-row { display: grid; grid-template-columns: 1fr 1.25fr 1.25fr; gap: 12px; padding-bottom: clamp(24px, 4vw, 48px); }
.photo-row figure { margin: 0; }
.photo-row img { width: 100%; height: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 10px; }

.flow { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0; margin-top: 32px; counter-reset: step; }
.flow div { position: relative; padding: 18px 16px 0 0; border-top: 2px solid var(--line); counter-increment: step; }
.flow div::before { content: counter(step, decimal-leading-zero); position: absolute; top: -12px; left: 0; font: 600 0.75rem var(--font-body); color: var(--accent); background: var(--bg); padding-right: 8px; }
.flow b { display: block; color: var(--text); font-weight: 600; margin-bottom: 4px; }
.flow span { font-size: 0.875rem; color: var(--muted); line-height: 1.45; display: block; }

.media-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.media-pair figure { margin: 0; }
.media-pair figcaption { font-size: 0.8125rem; color: var(--faint); padding-top: 10px; }
.clip { width: 100%; aspect-ratio: 16 / 9.4; object-fit: cover; border-radius: 10px; background: var(--surface); display: block; }
.yt { position: relative; display: block; width: 100%; padding: 0; border: 0; cursor: pointer; border-radius: 10px; overflow: hidden; background: #000; aspect-ratio: 16 / 9.4; }
.yt img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s cubic-bezier(0.2, 0.7, 0.2, 1); }
.yt:hover img { transform: scale(1.03); }
.yt-play { position: absolute; left: 50%; top: 50%; width: 68px; height: 68px; margin: -34px 0 0 -34px; border-radius: 50%; background: rgba(10, 10, 12, 0.72); backdrop-filter: blur(8px); border: 1px solid var(--line-strong); }
.yt-play::after { content: ''; position: absolute; left: 27px; top: 22px; border-left: 18px solid var(--text); border-top: 12px solid transparent; border-bottom: 12px solid transparent; }
.yt-frame { width: 100%; aspect-ratio: 16 / 9.4; border: 0; border-radius: 10px; display: block; }

.tour-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.tour-tabs button {
  font: 500 0.9375rem var(--font-body);
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 8px 18px;
  cursor: pointer;
  transition: color 0.2s, background 0.2s, border-color 0.2s;
}
.tour-tabs button:hover { color: var(--text); }
.tour-tabs button[aria-selected='true'] { color: #0b0b0b; background: var(--text); border-color: var(--text); }
.tour-copy p { margin: 18px 0 0; }
.tour-copy b { color: var(--text); }

/* bars fill in when they come into view */
.bar-fill { width: var(--w, 0); }
.bars:not(.in) .bar-fill { width: 0; }
.bars .bar-fill { transition: width 1.1s cubic-bezier(0.2, 0.7, 0.2, 1); }
.bars .bar:nth-child(2) .bar-fill { transition-delay: 0.06s; }
.bars .bar:nth-child(3) .bar-fill { transition-delay: 0.12s; }
.bars .bar:nth-child(4) .bar-fill { transition-delay: 0.18s; }
.bars .bar:nth-child(5) .bar-fill { transition-delay: 0.24s; }
@media (prefers-reduced-motion: reduce) { .bars .bar-fill { transition: none; } .bars:not(.in) .bar-fill { width: var(--w); } }

.index-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

@media (max-width: 860px) {
  .photo-row { grid-template-columns: 1fr 1fr; }
  .photo-row figure:first-child { grid-column: 1 / -1; }
  .flow { grid-template-columns: 1fr; gap: 0; }
  .flow div { border-top: 0; border-left: 2px solid var(--line); padding: 4px 0 18px 22px; }
  .flow div::before { top: 2px; left: -12px; padding: 2px 0; }
  .media-pair, .index-2 { grid-template-columns: 1fr; }
  .spline-hero { aspect-ratio: 4 / 3; }
  .spline { aspect-ratio: 4 / 3.4; }
}

/* ---------- COMU page: the widget's own green ---------- */
.theme-comu { --accent: #5fcf96; --accent-soft: rgba(95, 207, 150, 0.14); }
.theme-comu ::selection { background: #5fcf96; color: #06140d; }
.comu-hero { position: relative; margin-top: clamp(40px, 6vw, 72px); }
.comu-shot { margin: 0; }
.comu-shot img { width: 100%; border-radius: var(--r); border: 1px solid var(--line); }
.comu-avatar {
  position: absolute;
  right: clamp(16px, 4vw, 48px);
  bottom: calc(-1 * clamp(28px, 4vw, 56px));
  width: clamp(96px, 14vw, 180px);
  margin: 0;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid var(--bg);
  box-shadow: 0 18px 40px -12px rgba(0, 0, 0, 0.6);
}
.comu-avatar img { width: 100%; aspect-ratio: 1; object-fit: cover; }

/* ---------- Search palette (assets/kbar.js) ---------- */
.kbar-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: none;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--muted);
  font: 500 0.875rem var(--font-body);
  padding: 6px 8px 6px 14px;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}
.kbar-btn:hover { color: var(--text); border-color: var(--text); }
.kbar-btn kbd, .kbar kbd { font: 500 0.75rem var(--font-body); color: var(--muted); background: var(--surface-2); border-radius: 6px; padding: 2px 7px; }
.kbar {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding: 12vh 16px 16px;
  background: rgba(4, 4, 5, 0.6);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.kbar.open { display: flex; }
.kbar-panel {
  width: min(640px, 100%);
  background: #111215;
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  box-shadow: 0 40px 80px -20px rgba(0, 0, 0, 0.8);
  overflow: hidden;
  animation: kbar-in 0.22s cubic-bezier(0.2, 0.8, 0.2, 1);
}
@keyframes kbar-in { from { opacity: 0; transform: translateY(-8px) scale(0.985); } }
@media (prefers-reduced-motion: reduce) { .kbar-panel { animation: none; } }
.kbar-input {
  width: 100%;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  font: 400 1.125rem var(--font-body);
  padding: 20px 22px;
  outline: none;
}
.kbar-input::placeholder { color: var(--faint); }
.kbar-list { list-style: none; margin: 0; padding: 8px; max-height: min(56vh, 460px); overflow-y: auto; }
.kbar-list li a {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2px 16px;
  padding: 11px 14px;
  border-radius: 10px;
  text-decoration: none;
}
.kbar-list li a b { color: var(--text); font-weight: 500; }
.kbar-list li a small { grid-column: 1; color: var(--muted); font-size: 0.8125rem; }
.kbar-list li a i { grid-row: 1 / span 2; grid-column: 2; align-self: center; font-style: normal; font-size: 0.75rem; color: var(--faint); }
.kbar-list li[aria-selected='true'] a { background: var(--surface-2); }
.kbar-list li[aria-selected='true'] a i { color: var(--accent); }
.kbar-empty { padding: 18px 22px 22px; color: var(--muted); font-size: 0.9375rem; }
.kbar-foot { display: flex; gap: 18px; padding: 10px 18px; border-top: 1px solid var(--line); font-size: 0.75rem; color: var(--faint); }
@media (max-width: 1180px) { .kbar-btn kbd { display: none; } .kbar-btn { padding: 6px 14px; } }
@media (max-width: 980px) { .kbar-btn { display: none; } }

/* ---------- Page transitions between pages of this site ---------- */
@view-transition { navigation: auto; }
::view-transition-old(root), ::view-transition-new(root) { animation-duration: 0.28s; }
.page-title, .hero-name { view-transition-name: page-title; }
@media (prefers-reduced-motion: reduce) { @view-transition { navigation: none; } }

/* ---------- Home: timeline, now, GitHub ---------- */
.timeline { list-style: none; margin: 0; padding: 0; }
.timeline > li { display: grid; grid-template-columns: 96px 1fr; gap: 24px; padding: 22px 0; border-top: 1px solid var(--line); }
.timeline > li:last-child { border-bottom: 1px solid var(--line); }
.tl-year { font-family: var(--font-display); font-weight: 600; font-size: 1.6rem; color: var(--text); line-height: 1.1; }
.timeline ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.timeline ul li { position: relative; padding-left: 18px; font-size: 0.9875rem; color: var(--body); }
.timeline ul li::before { content: ''; position: absolute; left: 0; top: 0.62em; width: 7px; height: 1px; background: var(--accent); }
.timeline b { color: var(--text); font-weight: 600; }
.gh { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.gh:empty { min-height: 180px; }
.gh a { display: grid; gap: 4px; padding: 16px 18px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); text-decoration: none; height: 100%; transition: border-color 0.2s; }
.gh a:hover { border-color: var(--line-strong); }
.gh b { color: var(--text); font-weight: 600; font-size: 0.9875rem; }
.gh span { color: var(--muted); font-size: 0.875rem; line-height: 1.45; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.gh small { color: var(--faint); font-size: 0.8125rem; }
[hidden] { display: none !important; }
@media (max-width: 640px) {
  .timeline > li { grid-template-columns: 1fr; gap: 10px; }
  .gh { grid-template-columns: 1fr; }
}
.figures dt { white-space: nowrap; }
.comu-avatar { right: auto; left: clamp(16px, 4vw, 48px); }
.spline-hero { aspect-ratio: 16 / 8; }

/* ---------- Channel profile ---------- */
.chan-head { display: flex; align-items: center; gap: clamp(20px, 3.5vw, 44px); }
.chan-face {
  flex: none;
  width: clamp(96px, 13vw, 168px);
  aspect-ratio: 1;
  border-radius: 50%;
  padding: 4px;
  background: conic-gradient(from 210deg, #fb7299, #e6c25a, #57c7ff, #fb7299);
  box-shadow: 0 20px 50px -18px rgba(251, 114, 153, 0.45);
  transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.chan-face:hover { transform: scale(1.04) rotate(-3deg); }
.chan-face img { width: 100%; height: 100%; border-radius: 50%; object-fit: cover; border: 3px solid var(--bg); display: block; }
.chan-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin: 14px 0 0; color: var(--muted); font-size: 0.9375rem; }
.chan-lv { font: 700 0.75rem var(--font-body); color: #fff; background: #fb7299; border-radius: 6px; padding: 2px 8px; letter-spacing: 0.02em; }
@media (max-width: 640px) {
  .chan-head { flex-direction: column; align-items: flex-start; gap: 18px; }
}

/* =====================================================================
   Motion (assets/motion.js + scroll timelines). Nothing here runs under reduced motion.
   ===================================================================== */
@media (prefers-reduced-motion: no-preference) {
  /* words rise out of a mask */
  [data-split] .w { display: inline-block; overflow: hidden; vertical-align: bottom; padding-bottom: 0.06em; margin-bottom: -0.06em; }
  [data-split] .w > span { display: inline-block; transform: translateY(105%); transition: transform 0.9s cubic-bezier(0.19, 1, 0.22, 1); transition-delay: calc(var(--i) * 45ms); }
  [data-split].in .w > span { transform: none; }
  .hero-name[data-split] .w > span { transition-duration: 1.1s; transition-delay: calc(120ms + var(--i) * 38ms); }

  /* cards: lift, and a light where the pointer is */
  .card, .gh a, .work-card { transition: transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1), border-color 0.25s; will-change: transform; position: relative; }
  .card::after, .work-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.35s;
    background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), rgba(255, 255, 255, 0.07), transparent 60%);
  }
  .card:hover::after, .work-card:hover::after { opacity: 1; }

  /* images drift and settle as they cross the screen */
  @supports (animation-timeline: view()) {
    .card-media > img, .photo-row img, .gallery img, .work-card img, .shot img, .comu-shot img {
      animation: drift linear both;
      animation-timeline: view();
      animation-range: entry 0% exit 100%;
    }
    @keyframes drift { from { transform: scale(1.1) translateY(3%); } 50% { transform: scale(1.03) translateY(0); } to { transform: scale(1.06) translateY(-3%); } }
    .bleed img { animation: bleed linear both; animation-timeline: view(); animation-range: entry 0% exit 100%; }
    @keyframes bleed { from { transform: scale(1.18); } to { transform: scale(1); } }
    .shot, .comu-shot, .work-card .wc-media, .photo-row figure, .gallery figure { overflow: hidden; border-radius: var(--r); }
    .figures div { animation: rise linear both; animation-timeline: view(); animation-range: entry 0% entry 60%; }
    .figures div:nth-child(2) { animation-range: entry 8% entry 68%; }
    .figures div:nth-child(3) { animation-range: entry 16% entry 76%; }
    .figures div:nth-child(4) { animation-range: entry 24% entry 84%; }
    @keyframes rise { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }
    /* the page title thins out as you scroll past it */
    .page-hero .page-title, .hero-name { animation: title-out linear both; animation-timeline: scroll(root); animation-range: 0 70vh; }
    @keyframes title-out { to { opacity: 0.25; transform: translateY(-6%); } }
  }
  /* scroll progress, a hairline under the nav */
  @supports (animation-timeline: scroll()) {
    .nav::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: -1px;
      height: 1px;
      width: 100%;
      background: var(--accent);
      transform-origin: left;
      animation: progress linear both;
      animation-timeline: scroll(root);
    }
    @keyframes progress { from { transform: scaleX(0); } to { transform: scaleX(1); } }
  }
}

/* ---------- Section rail ---------- */
.rail {
  position: fixed;
  right: 22px;
  top: 50%;
  transform: translate(12px, -50%);
  z-index: 9;
  display: flex;
  flex-direction: column;
  gap: 4px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s, transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.rail.shown { opacity: 1; transform: translate(0, -50%); pointer-events: auto; }
.rail a { position: relative; display: flex; align-items: center; justify-content: flex-end; height: 18px; width: 40px; text-decoration: none; }
.rail a::after { content: ''; width: 14px; height: 2px; border-radius: 2px; background: var(--line-strong); transition: width 0.35s cubic-bezier(0.2, 0.8, 0.2, 1), background 0.25s; }
.rail a.on::after { width: 28px; background: var(--accent); }
.rail a:hover::after { width: 24px; background: var(--text); }
.rail span {
  position: absolute;
  right: 44px;
  white-space: nowrap;
  font-size: 0.8125rem;
  color: var(--text);
  background: rgba(17, 18, 21, 0.92);
  border: 1px solid var(--line);
  padding: 4px 10px;
  border-radius: 8px;
  opacity: 0;
  transform: translateX(6px);
  transition: opacity 0.2s, transform 0.25s;
  pointer-events: none;
}
.rail a:hover span, .rail a:focus-visible span { opacity: 1; transform: none; }
@media (max-width: 1360px) { .rail { display: none; } }

/* ---------- Hardware: pad-spacing diagram ---------- */
.pads { margin: 0 0 28px; color: var(--accent); }
.pads svg { width: 100%; height: auto; display: block; }
.pads .pad-row rect { fill: #c9a24a; opacity: 0.85; }
.pads .gap { stroke: var(--accent); stroke-dasharray: 3 3; }
.pads .need { fill: #f06363; opacity: 0.9; }
.pads .dim line { stroke: var(--muted); stroke-width: 1; }
.pads .dim text { fill: var(--body); font: 500 13px var(--font-body); text-anchor: middle; }
@media (prefers-reduced-motion: no-preference) {
  .pads .need { transform-box: fill-box; transform-origin: left; animation: need-grow 1.4s cubic-bezier(0.2, 0.8, 0.2, 1) both; animation-timeline: view(); animation-range: entry 20% cover 45%; }
  @keyframes need-grow { from { transform: scaleX(0); } }
}

/* ---------- Work cards (Catalyst apps, home projects) ---------- */
.apps, .works { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.work-card { display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: var(--r); background: var(--surface); overflow: hidden; text-decoration: none; }
.work-card:hover { border-color: var(--line-strong); }
.wc-wide { grid-column: 1 / -1; }
.wc-media { aspect-ratio: 16 / 10; overflow: hidden; background: #0c0d0f; }
.wc-wide .wc-media { aspect-ratio: 21 / 10; }
.wc-media img, .wc-media .stage { width: 100%; height: 100%; object-fit: cover; }
.wc-media .stage { border: 0; border-radius: 0; aspect-ratio: auto; }
.wc-body { padding: 14px 18px 16px; display: grid; gap: 3px; }
.wc-body b { color: var(--text); font-weight: 600; }
.wc-body span { color: var(--muted); font-size: 0.875rem; line-height: 1.45; }
.duo { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.duo figure { margin: 0; }
.duo figcaption { font-size: 0.8125rem; color: var(--faint); padding-top: 10px; }
.features-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 28px; }
.features-3 > div { padding: 20px 0 22px; }
.features-3 h3 { font-size: 1.05rem; }
@media (max-width: 860px) {
  .apps, .works, .duo { grid-template-columns: 1fr; }
  .features-3 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) { .features-3 { grid-template-columns: 1fr; } }

/* ---------- Home hero with a model ---------- */
.hero-3d { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: center; }
.hero-3d .hero-facts { margin-top: 28px; }
.hero-stage { margin: 0; }
.hero-stage .stage { aspect-ratio: 5 / 4; background: radial-gradient(60% 55% at 50% 45%, rgba(230, 194, 90, 0.08), transparent 70%), var(--surface); }
.hero-stage figcaption { font-size: 0.8125rem; color: var(--faint); padding-top: 10px; }
@media (max-width: 980px) { .hero-3d { grid-template-columns: 1fr; } }

.wc-type { display: grid; place-items: center; background: radial-gradient(70% 70% at 50% 50%, rgba(230, 194, 90, 0.1), transparent 70%), #0c0d0f; }
.wc-type span { font: 500 clamp(1.4rem, 3vw, 2rem) var(--font-mono); color: var(--text); }
.wc-type i { font-style: normal; color: var(--accent); }
@media (prefers-reduced-motion: no-preference) {
  .wc-type span { display: inline-block; animation: settle 2.6s cubic-bezier(0.34, 1.56, 0.64, 1) infinite; }
  @keyframes settle { 0% { transform: translateX(-28px); } 40%, 100% { transform: none; } }
}
.mini-list { list-style: none; margin: 22px 0 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 0 28px; }
.mini-list li { padding: 12px 0; border-top: 1px solid var(--line); font-size: 0.9rem; color: var(--muted); }
.mini-list b { color: var(--text); font-weight: 600; margin-right: 6px; }
.mini-list a { color: var(--accent); text-decoration: none; margin-left: 4px; }
@media (max-width: 640px) { .mini-list { grid-template-columns: 1fr; } }
[data-split] .wd { display: inline-block; white-space: nowrap; }

/* ---------- App cards: real icon, whole screenshot ---------- */
.apps { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; align-items: start; }
.app { display: block; text-decoration: none; border: 1px solid var(--line); border-radius: 16px; background: var(--surface); padding: 14px; transition: border-color 0.25s, transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1); }
.app:hover { border-color: var(--line-strong); transform: translateY(-3px); }
.app-wide { grid-column: 1 / -1; }
.app-head { display: grid; grid-template-columns: 44px 1fr auto; gap: 12px; align-items: center; margin-bottom: 12px; }
.app-icon { width: 44px; height: 44px; border-radius: 11px; box-shadow: 0 6px 16px -6px rgba(0, 0, 0, 0.6); }
.app-head b { display: block; color: var(--text); font-weight: 600; font-size: 0.975rem; }
.app-head span { display: block; color: var(--muted); font-size: 0.8125rem; }
.app-head em { font-style: normal; font: 600 0.75rem var(--font-body); color: var(--accent); background: var(--accent-soft); border-radius: 999px; padding: 3px 9px; }
.app-shot { width: 100%; height: auto; display: block; border-radius: 9px; border: 1px solid var(--line); }
@media (max-width: 760px) { .apps { grid-template-columns: 1fr; } }

/* screenshots are shown whole: no crop, no drift (drift is for photographs) */
.works .wc-media { aspect-ratio: auto !important; }
.works .wc-media img { height: auto; object-fit: contain; display: block; }
.works .wc-type { aspect-ratio: 16 / 7 !important; }
.app-shot, .works .wc-media img, .shot img, .comu-shot img { animation: none !important; transform: none !important; }
.works { align-items: start; }

/* ---------- Phone menu: a full-screen sheet over the blurred page ---------- */
.nav { z-index: 30; }
.nav-sheet {
  display: block;
  position: fixed;
  inset: 0;
  top: 0;
  z-index: -1;
  padding: calc(var(--nav-h) + 12px) var(--gutter) 28px;
  background: rgba(8, 8, 10, 0.55);
  backdrop-filter: blur(28px) saturate(150%);
  -webkit-backdrop-filter: blur(28px) saturate(150%);
  border: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, visibility 0s linear 0.35s, backdrop-filter 0.35s;
  overflow-y: auto;
}
.nav.open .nav-sheet { opacity: 1; visibility: visible; transition: opacity 0.35s ease; }
.nav.open { background: transparent; backdrop-filter: none; -webkit-backdrop-filter: none; border-bottom-color: transparent; }
.sheet-in { display: flex; flex-direction: column; min-height: 100%; }
.nav-sheet .sheet-home { display: none; }
.nav-sheet .sheet-link {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  font: inherit;
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.4s ease, transform 0.6s cubic-bezier(0.19, 1, 0.22, 1);
}
.nav.open .sheet-link, .nav.open .sheet-foot { opacity: 1; transform: none; transition-delay: calc(var(--i) * 45ms + 60ms); }
.sheet-link b { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.9rem, 8vw, 2.6rem); line-height: 1.05; color: var(--text); }
.sheet-link small { font-size: 0.8125rem; color: var(--muted); text-align: right; }
.sheet-link[aria-current='page'] b { color: var(--accent); }
.sheet-link:active b { color: var(--accent); }
.sheet-foot {
  margin-top: auto;
  padding-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.4s ease, transform 0.6s cubic-bezier(0.19, 1, 0.22, 1);
}
.sheet-foot a, .sheet-foot button {
  font: 500 0.9375rem var(--font-body);
  color: var(--text);
  text-decoration: none;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 9px 16px;
  cursor: pointer;
}
html.menu-open body { overflow: hidden; }
html.menu-open .nav { position: fixed; top: 0; left: 0; right: 0; }
.menu-btn { display: none; align-items: center; gap: 10px; padding: 7px 14px 7px 12px; }
.burger { position: relative; width: 16px; height: 10px; display: inline-block; }
.burger i { position: absolute; left: 0; right: 0; height: 1.5px; border-radius: 2px; background: currentColor; transition: transform 0.45s cubic-bezier(0.19, 1, 0.22, 1), top 0.45s cubic-bezier(0.19, 1, 0.22, 1); }
.burger i:first-child { top: 1px; }
.burger i:last-child { top: 7.5px; }
.nav.open .burger i:first-child { top: 4.25px; transform: rotate(45deg); }
.nav.open .burger i:last-child { top: 4.25px; transform: rotate(-45deg); }
@media (max-width: 980px) { .menu-btn { display: inline-flex; } }
@media (prefers-reduced-motion: reduce) { .nav-sheet, .sheet-link, .sheet-foot { transition: none !important; } }

/* ---------- Home: the three panels about me ---------- */
.bento-wrap { padding-bottom: clamp(56px, 8vw, 104px); }
.bento { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.panel { border: 1px solid var(--line); border-radius: 16px; padding: 22px 22px 18px; background: linear-gradient(180deg, var(--surface), rgba(17, 18, 21, 0.4)); }
.panel ul { list-style: none; margin: 6px 0 0; padding: 0; }
.panel li { padding: 10px 0; border-top: 1px solid var(--line); font-size: 0.875rem; color: var(--muted); line-height: 1.45; }
.panel li:first-child { border-top: 0; }
.panel b { display: block; color: var(--text); font-weight: 600; font-size: 0.9375rem; }
@media (max-width: 900px) { .bento { grid-template-columns: 1fr; } }

/* "Right now" as tiles, skills as tags */
.now .plain-list { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 10px; }
.now .plain-list li { border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; background: var(--surface); }
.now .plain-list li:last-child { border-bottom: 1px solid var(--line); }
.tags { display: grid; gap: 12px; margin-top: 30px; }
.tags div { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.tags b { width: 64px; font-size: 0.8125rem; color: var(--faint); font-weight: 500; }
.tags span { font-size: 0.8125rem; color: var(--body); border: 1px solid var(--line-strong); border-radius: 999px; padding: 4px 11px; transition: border-color 0.2s, color 0.2s; }
.tags span:hover { border-color: var(--accent); color: var(--text); }
@media (max-width: 640px) { .now .plain-list { grid-template-columns: 1fr; } .tags b { width: 100%; } }

/* ---------- Home: by the numbers ---------- */
.numbers { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); margin: clamp(48px, 7vw, 80px) 0 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.numbers div { padding: 22px 16px 20px 0; }
.numbers div + div { padding-left: 16px; border-left: 1px solid var(--line); }
.numbers dt { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.9rem, 3.4vw, 2.8rem); line-height: 1; color: var(--text); }
.numbers dd { margin: 8px 0 0; font-size: 0.8125rem; color: var(--muted); line-height: 1.35; }
.numbers + .index { margin-top: clamp(40px, 6vw, 72px); }
@media (prefers-reduced-motion: no-preference) {
  @supports (animation-timeline: view()) {
    .numbers div { animation: rise linear both; animation-timeline: view(); animation-range: entry 0% entry 70%; }
    .numbers div:nth-child(2n) { animation-range: entry 6% entry 76%; }
  }
}
@media (max-width: 900px) {
  .numbers { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .numbers div:nth-child(4) { padding-left: 0; border-left: 0; }
  .numbers div:nth-child(n + 4) { border-top: 1px solid var(--line); }
}
/* four panels: two by two */
.bento { grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 760px) { .bento { grid-template-columns: 1fr; } }

/* performance: no blur over a live 3D canvas (it re-blurs every frame), no permanent GPU layers */
.scrolly-box { backdrop-filter: none; -webkit-backdrop-filter: none; background: rgba(13, 14, 17, 0.9); }
.card, .gh a, .work-card { will-change: auto; }