/* =====================================================================
   Louis Yiven Zhu — personal site
   hand-written. no build step. no framework. no CDN.

   Bone paper, one petrol ink for meaning, Spectral for prose,
   Public Sans for labels, Plex Mono for data. Margins sit on a 30px
   grid; colour is never decorative.
   ===================================================================== */

/* ------------------------------------------------------------------ */
/* 0. FACES — all SIL OFL, all first-party                             */
/* ------------------------------------------------------------------ */

@font-face {
  font-family: "Spectral";
  src: url("fonts/spectral-400.woff2") format("woff2");
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Spectral";
  src: url("fonts/spectral-400i.woff2") format("woff2");
  font-weight: 400; font-style: italic; font-display: swap;
}
@font-face {
  font-family: "Spectral";
  src: url("fonts/spectral-600.woff2") format("woff2");
  font-weight: 600; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Public Sans";
  src: url("fonts/public-sans-var.woff2") format("woff2");
  font-weight: 100 900; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("fonts/plex-mono-400.woff2") format("woff2");
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("fonts/plex-mono-600.woff2") format("woff2");
  font-weight: 600; font-style: normal; font-display: swap;
}

/* ------------------------------------------------------------------ */
/* 1. TOKENS                                                           */
/* ------------------------------------------------------------------ */

:root {
  /* light is the default for everyone; dark is a choice via the toggle */
  color-scheme: light;

  /* surfaces */
  --paper:        light-dark(#FAF9F6, #16181A);
  --paper-sunk:   light-dark(#F1EFE9, #1E2124);
  --paper-raised: light-dark(#FFFFFF, #23272A);

  /* inks */
  --ink:          light-dark(#1B1D1E, #E6E4DF);
  --ink-2:        light-dark(#4A4F52, #B2AFa8);
  --ink-3:        light-dark(#6E7478, #8C9092);

  /* rules */
  --rule:         light-dark(#DCD9D1, #32373A);
  --rule-strong:  light-dark(#A9A69C, #4C5255);

  /* signal — dark mode runs muted eucalyptus, not neon cyan */
  --signal:       light-dark(#1B4B57, #9FC6BB);
  --signal-lift:  light-dark(#0F3944, #C2DCD3);
  --signal-wash:  light-dark(rgba(27, 75, 87, .14), rgba(159, 198, 187, .16));

  /* The field has three legible depths. Teal identifies the moving
     capability frontier and user-triggered evaluation pulses. */
  --line-far:     light-dark(#BCBAB4, #484E4F);
  --line-mid:     light-dark(#858985, #717978);
  --line-near:    light-dark(#4E5453, #AAB0AC);
  --line-accent:  light-dark(#1B5961, #9FC6BB);

  /* type */
  --font-prose: "Spectral", Charter, "Iowan Old Style", Georgia, serif;
  --font-label: "Public Sans", -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-data:  "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* rhythm */
  --line: 30px;
  --measure: 42rem;
  --note: 14rem;
  --gutter: 2rem;
  --edge: 1.5rem;
  --page-max: 1200px;

  /* motion */
  --ease-quiet: cubic-bezier(.22, .61, .36, 1);
  --ease-tick:  cubic-bezier(.40, .00, .20, 1);
}

/* ------------------------------------------------------------------ */
/* 2. BASE                                                             */
/* ------------------------------------------------------------------ */

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-prose);
  font-size: 19px;
  line-height: var(--line);
  font-variant-numeric: oldstyle-nums proportional-nums;
  font-feature-settings: 'onum' 1, 'pnum' 1, 'liga' 1, 'kern' 1;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html.theming body,
html.theming body * { transition: background-color 240ms linear, color 240ms linear, border-color 240ms linear; }

table, .fig, .stat, code, .status, .spine, .banner, .stat-chip b, .xp-when {
  font-variant-numeric: lining-nums tabular-nums;
  font-feature-settings: 'lnum' 1, 'tnum' 1;
}

p { margin: 0 0 15px; }
p:last-child { margin-bottom: 0; }
h1, h2, h3 { margin: 0; font-weight: 600; }

::selection { background: var(--signal-wash); }

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

[id] { scroll-margin-top: calc(var(--line) * 2); }

.skip-link {
  position: absolute; left: -9999px;
  background: var(--paper-raised); color: var(--ink);
  padding: .5rem 1rem; border: 1px solid var(--rule-strong); z-index: 60;
}
.skip-link:focus { left: 1rem; top: 1rem; }

.progress {
  position: fixed; top: 0; left: 0; right: 0;
  height: 2px; z-index: 55; pointer-events: none;
}
.progress b {
  display: block; height: 100%;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: left;
  opacity: .8;
}

.icon {
  width: 1.05em; height: 1.05em;
  fill: none; stroke: currentColor;
  stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round;
  vertical-align: -0.18em; flex-shrink: 0;
}

/* ------------------------------------------------------------------ */
/* 3. GRID                                                             */
/* ------------------------------------------------------------------ */

main, .page-footer {
  display: grid;
  grid-template-columns:
    [screen-start] minmax(var(--edge), 1fr)
    [page-start note-start] minmax(0, var(--note))
    [text-start] min(var(--measure), 100% - var(--edge) * 2)
    [text-end] minmax(0, var(--note))
    [note-end page-end] minmax(var(--edge), 1fr)
    [screen-end];
  column-gap: var(--gutter);
}

.page-footer > * { grid-column: page; }

main > section {
  grid-column: text-start / note-end;
  display: grid;
  grid-template-columns: subgrid;
  align-content: start;
}
main > section > * { grid-column: text; }

.l-note { grid-column: text-end / note-end; }

@media (max-width: 64rem) {
  main, .page-footer {
    grid-template-columns:
      [screen-start] var(--edge)
      [page-start note-start text-start] minmax(0, 1fr)
      [text-end note-end page-end] var(--edge)
      [screen-end];
    column-gap: 0;
  }
}

/* ------------------------------------------------------------------ */
/* 4. TOPBAR                                                           */
/* ------------------------------------------------------------------ */

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 7.5px 1.5rem;
  flex-wrap: wrap;
  padding: 15px var(--edge);
  max-width: var(--page-max);
  margin: 0 auto;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.topbar .wordmark { margin: 0; font-weight: 600; }
.topbar a {
  color: var(--ink-2);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color 140ms var(--ease-tick), border-color 140ms var(--ease-tick);
}
.topbar a:hover { color: var(--signal); border-bottom-color: var(--signal); }
.topbar .wordmark a { color: var(--ink); border-bottom: none; }
.topbar nav { display: flex; gap: 1.25rem; align-items: center; flex-wrap: wrap; }

@media (max-width: 40rem) {
  .topbar {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: start;
    gap: 9px;
    padding-block: 12px;
    position: relative;
  }
  .topbar nav {
    grid-column: 1 / -1;
    flex-wrap: nowrap;
    gap: .75rem;
    font-size: 10.5px;
    overflow-x: auto;
    padding: 1px 0 3px;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }
  .topbar nav::-webkit-scrollbar { display: none; }
  .topbar nav > * { flex: 0 0 auto; }
  .topbar nav .icon-btn {
    position: absolute;
    top: 10px;
    right: var(--edge);
  }
}

.icon-btn {
  background: none;
  border: 1px solid var(--rule);
  border-radius: 2px;
  color: var(--ink-2);
  padding: 4px 6px;
  cursor: pointer;
  line-height: 1;
  transition: color 160ms var(--ease-tick), border-color 160ms var(--ease-tick);
}
.icon-btn .icon { width: 14px; height: 14px; vertical-align: middle; transition: transform 300ms var(--ease-quiet); }
.icon-btn:hover { color: var(--signal); border-color: var(--signal); }
.icon-btn:active .icon { transform: rotate(-30deg); }

/* ------------------------------------------------------------------ */
/* 5. HERO + THE FIELD                                                 */
/* ------------------------------------------------------------------ */

.hero-wrap {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 0 var(--edge) calc(var(--line) * 1.5);
}

.banner {
  position: relative;
  margin: 0;
  border-block: 1px solid var(--rule);
  overflow: hidden;
}
.banner:focus-visible {
  outline-offset: 4px;
}

.banner-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding-top: 15px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-3);
  min-height: 17px;
}
.banner-head .hint { color: var(--ink-2); }
@media (prefers-reduced-motion: reduce) { .banner-head .hint { display: none; } }
@media (hover: none) { .banner-head .hint { display: none; } }

.stat { white-space: nowrap; display: inline-flex; align-items: center; gap: .6rem; }
.stat-label { color: var(--ink-3); }
.meter {
  display: inline-block;
  width: 72px; height: 3px;
  background: var(--rule);
  overflow: hidden;
}
.meter b {
  display: block; height: 100%;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: left;
}
.stat-n {
  display: inline-block;
  min-width: 4ch;
  color: var(--ink-2);
  font-weight: 600;
}

/* the 3D stage: an ASCII terrain projected into a fixed-width raster */
.stack {
  position: relative;
  overflow: hidden;
  padding-block: 12px;
  touch-action: pan-y;
}
.stack.is-dragging,
.stack.is-dragging pre { cursor: grabbing; }
.plane {
  transform-origin: 50% 100%;
  will-change: transform;
}
.banner pre {
  margin: 0;
  font-family: var(--font-data);
  font-size: 11.5px;
  line-height: 11.5px;
  white-space: pre;
  overflow: hidden;
  user-select: none;
  cursor: crosshair;
  text-align: center;
  /* fast path for per-frame updates: no shaping niceties, no layout
     propagation outside the box */
  text-rendering: optimizeSpeed;
  font-kerning: none;
  font-variant-ligatures: none;
  font-feature-settings: 'liga' 0, 'kern' 0;
  contain: layout paint;
  will-change: transform;
}
.banner pre.l-far { color: var(--line-far); }
.banner pre.l-ghost,
.banner pre.l-mid,
.banner pre.l-near,
.banner pre.crest {
  position: absolute;
  inset: 0;
  padding-block: 12px;   /* match the in-flow layer's box exactly */
}
/* The ghost layer carries uncertain contours and fading interaction wakes. */
.banner pre.l-ghost { color: var(--line-far); }
.banner pre.l-mid   { color: var(--line-mid); }
.banner pre.l-near  { color: var(--line-near); }
.banner pre.crest   { color: var(--line-accent); font-weight: 600; }
/* A very small edge fade keeps the text from touching the frame. */
.mist {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(to bottom,
    var(--paper) 0%, transparent 7%,
    transparent 96%, var(--paper) 100%);
  opacity: .18;
}

.banner-foot {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  margin: 0;
  padding-bottom: 15px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--ink-3);
  min-height: 17px;
}
.banner-caption { opacity: 0; transition: opacity 600ms var(--ease-quiet); }
.banner.live .banner-caption { opacity: 1; }
.banner-foot .legend { flex-shrink: 0; }
.live-mark {
  display: inline-block;
  width: 5px;
  height: 5px;
  margin-right: 6px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 3px var(--signal-wash);
  vertical-align: .08em;
}

@media (max-width: 40rem) {
  .stack { padding-block: 10px; }
  .banner pre {
    font-size: 10.5px;
    line-height: 11px;
  }
  .banner pre.l-ghost,
  .banner pre.l-mid,
  .banner pre.l-near,
  .banner pre.crest { padding-block: 10px; }
  .banner-head { padding-top: 12px; }
  .banner-foot { padding-bottom: 12px; }
  .banner-foot .legend { display: none; }
}

/* hero text */
.hero { padding-top: calc(var(--line) * 1.5); max-width: 46rem; }
.eyebrow {
  display: flex;
  align-items: baseline;
  gap: .65rem;
  flex-wrap: wrap;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--signal);
  margin-bottom: 15px;
}
.eyebrow-sep { color: var(--rule-strong); }
/* the hero heading is a section header like any other — 00 in the
   same scale as 01–05, no display-size name shouting over the page */
h1.sec-h {
  display: flex;
  align-items: center;
  gap: .9rem;
  font-family: var(--font-label);
  font-size: 24px;
  font-weight: 650;
  letter-spacing: -.01em;
  line-height: var(--line);
  margin-bottom: var(--line);
}
h1.sec-h .n {
  font-family: var(--font-data);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--signal);
}
h1.sec-h::after { content: ""; flex: 1; height: 1px; background: var(--rule); }

.lede { font-size: 21px; line-height: 34px; max-width: 42rem; }
.lede em { color: var(--signal); font-style: italic; }

/* off the desk, as quiet mono tags */
.offdesk {
  display: flex;
  gap: 7.5px;
  flex-wrap: wrap;
  margin-top: 15px;
}
.offdesk span {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--ink-3);
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 4px 9px;
}

.utility {
  display: flex; gap: 1.4rem; align-items: baseline; flex-wrap: wrap;
  font-family: var(--font-label); font-size: 15px; font-weight: 500;
  margin-top: var(--line);
}

/* fact tiles */
.facts {
  list-style: none;
  margin: calc(var(--line) * 1.5) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 15px;
}
.fact {
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 15px;
  display: grid;
  gap: 6px;
  align-content: start;
  transition: border-color 200ms var(--ease-quiet), translate 200ms var(--ease-quiet);
}
.fact:hover { border-color: var(--rule-strong); translate: 0 -2px; }
.fact .icon { width: 18px; height: 18px; color: var(--signal); }
.fact-k {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.fact-v {
  font-family: var(--font-label);
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.45;
}
@media (max-width: 64rem) { .facts { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 30rem) { .facts { grid-template-columns: 1fr; } }

/* award list */
.award-list li {
  display: flex;
  align-items: baseline;
  gap: .8rem;
}
.award-list .icon { width: 15px; height: 15px; color: var(--signal); flex-shrink: 0; align-self: center; }
.award-list strong { font-weight: 600; }

/* ------------------------------------------------------------------ */
/* 6. SPINE                                                            */
/* ------------------------------------------------------------------ */

.spine {
  grid-column: note-start / text-start;
  grid-row: 1 / span 60;   /* spans the implicit rows; empties cost 0px */
  position: sticky;
  top: var(--line);
  align-self: start;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding-top: calc(var(--line) * 3);
}
.spine ol { list-style: none; margin: 0; padding: 0; }
.spine a {
  display: grid;
  grid-template-columns: 1.6rem 1fr;
  gap: .5rem;
  align-items: center;
  color: var(--ink-3);
  text-decoration: none;
  padding-block: 4px;
  transition: color 160ms var(--ease-tick);
}
.spine a:hover { color: var(--ink); }
.spine a::before {
  content: "";
  height: 1px;
  background: var(--rule-strong);
  width: 8px;
  transition: width 200ms var(--ease-tick), background-color 200ms var(--ease-tick);
}
.spine a[aria-current="true"] { color: var(--signal); }
.spine a[aria-current="true"]::before { width: 22px; background: var(--signal); }

.spine .legend {
  margin-top: var(--line);
  padding-top: 15px;
  border-top: 1px solid var(--rule);
  color: var(--ink-3);
  text-transform: none;
  letter-spacing: .02em;
  line-height: 18px;
}

@media (max-width: 64rem) {
  .spine {
    grid-column: text;
    grid-row: auto;
    position: sticky;
    top: 0;
    padding-top: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--rule);
    z-index: 10;
    margin-bottom: var(--line);
  }
  .spine ol { display: flex; gap: 1.1rem; overflow-x: auto; padding-block: 12px; }
  .spine a { display: block; white-space: nowrap; padding-block: 0; }
  .spine a::before { display: none; }
  .spine .legend { display: none; }
}

/* ------------------------------------------------------------------ */
/* 7. SECTIONS                                                         */
/* ------------------------------------------------------------------ */

main { padding-bottom: calc(var(--line) * 2); }
main > section { margin-top: calc(var(--line) * 3); }

h2 {
  grid-column: text-start / note-end;
  display: flex;
  align-items: center;
  gap: .9rem;
  font-family: var(--font-label);
  font-size: 24px;
  font-weight: 650;
  letter-spacing: -.01em;
  color: var(--ink);
  margin-bottom: var(--line);
}
h2 .n {
  font-family: var(--font-data);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--signal);
}
h2::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--rule);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 700ms var(--ease-quiet) 100ms;
}
section.in h2::after { transform: scaleX(1); }

h3 { font-size: 21px; line-height: var(--line); }
.mini-h {
  font-family: var(--font-data);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 15px;
}

.rv { opacity: 0; translate: 0 10px; }
.rv.in {
  opacity: 1;
  translate: 0 0;
  transition:
    opacity 550ms var(--ease-quiet) calc(var(--rvi, 0) * 60ms),
    translate 550ms var(--ease-quiet) calc(var(--rvi, 0) * 60ms);
}

/* ------------------------------------------------------------------ */
/* 8. LINKS                                                            */
/* ------------------------------------------------------------------ */

a {
  color: inherit;
  text-decoration: underline;
  text-decoration-color: var(--signal);
  text-decoration-thickness: 1px;
  text-underline-offset: 3.5px;
  transition: color 140ms var(--ease-tick);
}
a:hover, a:focus-visible {
  text-decoration-thickness: 2px;
  color: var(--signal-lift);
}

.ext { margin-right: .35em; }
.ext[href]::after {
  content: "";
  display: inline-block;
  width: .36em; height: .36em;
  margin-left: .3em;
  border-top: 1px solid var(--ink-3);
  border-right: 1px solid var(--ink-3);
  vertical-align: .28em;
  transition: translate 160ms var(--ease-tick), border-color 160ms var(--ease-tick);
}
.ext[href]:hover::after { translate: 1px -1px; border-color: var(--signal); }

/* placeholder links (no href yet) read as plain text */
a:not([href]) { text-decoration: none; color: var(--ink-2); cursor: default; }

.chiplike {
  font-family: var(--font-label);
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-2);
  white-space: nowrap;
}

/* ------------------------------------------------------------------ */
/* 9. POPOVER                                                          */
/* ------------------------------------------------------------------ */

.pop { position: relative; }
.pop::after {
  content: "";
  position: absolute;
  inset: -0.4lh -1ch;
  pointer-events: none;
}
.pop:hover::after, .pop:focus-within::after { pointer-events: auto; }

.pop:not(:hover):not(:focus-within):not(.is-open) > .pop-body { display: none; }
.pop.dismissed > .pop-body { display: none !important; }

.pop-body {
  position: absolute;
  bottom: calc(100% + .55em);
  left: -1ch;
  inline-size: min(23rem, 86vw);
  z-index: 30;
  background: var(--paper-raised);
  border: 1px solid var(--rule-strong);
  padding: .6rem .8rem;
  font-family: var(--font-label);
  font-size: 14px;
  line-height: 1.5;
  font-weight: 400;
  font-style: normal;
  letter-spacing: 0;
  text-transform: none;
  color: var(--ink-2);
  white-space: normal;
  text-align: left;
  box-shadow: 0 3px 14px light-dark(rgba(27, 29, 30, .10), rgba(0, 0, 0, .5));
  transform-origin: bottom left;
  transition: opacity 130ms var(--ease-quiet), scale 130ms var(--ease-quiet), translate 130ms var(--ease-quiet);
}
@starting-style {
  .pop-body { opacity: 0; scale: .97; translate: 0 3px; }
}
@media (max-width: 40rem) {
  .pop-body {
    position: fixed;
    left: var(--edge); right: var(--edge); bottom: var(--edge); top: auto;
    inline-size: auto;
  }
}

.term {
  font-style: normal;
  border-bottom: 1px dotted var(--ink-3);
  cursor: help;
}

/* ------------------------------------------------------------------ */
/* 10. PUBLICATION CARDS                                               */
/* ------------------------------------------------------------------ */

.qlist {
  list-style: none;
  margin: 15px 0 var(--line);
  padding: 0;
}
.qlist li {
  display: flex;
  align-items: baseline;
  gap: .9rem;
  padding: 11px 0;
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-label);
  font-size: 16px;
  font-weight: 500;
}
.qlist li:first-child { border-top: 1px solid var(--rule); }
.q-n {
  font-family: var(--font-data);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--signal);
}

.pubs {
  grid-column: text-start / note-end;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 15px;
  margin-top: 15px;
}
.pub {
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 15px;
  display: flex;
  flex-direction: column;
  gap: 7.5px;
  transition: border-color 200ms var(--ease-quiet), translate 200ms var(--ease-quiet);
}
.pub:hover { border-color: var(--rule-strong); translate: 0 -2px; }
.pub-title { font-size: 19px; line-height: 26px; }
.pub-title a { text-decoration-color: var(--rule-strong); }
.pub-title a[href]:hover { text-decoration-color: var(--signal); }
.pub p {
  font-family: var(--font-label);
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--ink-2);
  margin: 0;
}
.pub > p:nth-of-type(1) { flex-grow: 1; }
.pub-meta {
  font-size: 13px !important;
  color: var(--ink-3) !important;
}
@media (max-width: 64rem) { .pubs { grid-template-columns: 1fr; } }

.stat-row {
  display: flex;
  flex-wrap: wrap;
  gap: 7.5px;
}
.stat-chip {
  display: inline-block;
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 4px 8px;
  font-family: var(--font-label);
  font-size: 12.5px;
  color: var(--ink-3);
  cursor: help;
  transition: border-color 200ms var(--ease-quiet);
}
.pop:hover .stat-chip, .pop:focus-within .stat-chip { border-color: var(--signal); }
.stat-chip b {
  font-family: var(--font-data);
  font-size: 13.5px;
  font-weight: 600;
  color: var(--signal);
  margin-right: .3rem;
}

.status {
  display: inline-block;
  font-family: var(--font-data);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: .18em .5em;
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  color: var(--ink-3);
  align-self: flex-start;
}
.status.is-published {
  color: var(--paper);
  background: var(--signal);
  border-color: var(--signal);
}

.also {
  grid-column: text-start / note-end;
  font-family: var(--font-label);
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink-2);
  margin-top: var(--line);
  padding-top: 15px;
  border-top: 1px solid var(--rule);
}

/* ------------------------------------------------------------------ */
/* 11. EXPERIENCE                                                      */
/* ------------------------------------------------------------------ */

.orgs {
  grid-column: text-start / note-end;
  display: flex;
  align-items: center;
  gap: 3rem;
  flex-wrap: wrap;
  padding: 15px 0 var(--line);
}
.org {
  height: 26px;
  width: auto;
  filter: grayscale(1);
  opacity: .55;
  transition: opacity 200ms var(--ease-quiet), filter 200ms var(--ease-quiet);
}
.org-tall { height: 40px; }
.org:hover { opacity: 1; filter: grayscale(0); }
/* logos invert only when the visitor has chosen dark via the toggle */
:root[style*="color-scheme: dark"] .org { filter: grayscale(1) invert(.85); }
:root[style*="color-scheme: dark"] .org:hover { filter: grayscale(1) invert(.85); opacity: .9; }

.xp-list { grid-column: text-start / note-end; }
.xp {
  display: grid;
  grid-template-columns: 6.5rem 1fr;
  gap: 1.5rem;
  padding: 15px 0;
  border-bottom: 1px solid var(--rule);
}
.xp:first-of-type { border-top: 1px solid var(--rule); }
.xp-when {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--ink-3);
  padding-top: 3px;
}
.xp-role {
  font-family: var(--font-label);
  font-size: 15.5px;
  font-weight: 600;
  margin-bottom: 2px;
}
.xp-desc {
  font-family: var(--font-label);
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-2);
  margin: 0;
}
@media (max-width: 40rem) {
  .xp { grid-template-columns: 1fr; gap: .3rem; }
}

/* ------------------------------------------------------------------ */
/* 12. TALKS / ABOUT / CONTACT                                         */
/* ------------------------------------------------------------------ */

.cols-2 {
  grid-column: text-start / note-end;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--line) 3rem;
}
@media (max-width: 64rem) { .cols-2 { grid-template-columns: 1fr; } }

.plain-list {
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-label);
  font-size: 15px;
}
.plain-list li {
  padding: 9px 0;
  border-bottom: 1px solid var(--rule);
  line-height: 1.5;
}
.plain-list li:first-child { border-top: 1px solid var(--rule); }

.email { margin-top: var(--line); display: flex; gap: 15px; flex-wrap: wrap; }
.email-card {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  padding: 11px 18px;
  font-family: var(--font-label);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  transition: border-color 200ms var(--ease-quiet), color 200ms var(--ease-quiet), translate 200ms var(--ease-quiet);
}
.email-card:hover { border-color: var(--signal); color: var(--signal); translate: 0 -1px; }
.email-card .icon { width: 17px; height: 17px; color: var(--signal); }
.email .email-card:first-child {
  color: var(--paper);
  background: var(--signal);
  border-color: var(--signal);
}
.email .email-card:first-child .icon { color: currentColor; }
.email .email-card:first-child:hover {
  color: var(--paper);
  background: var(--signal-lift);
  border-color: var(--signal-lift);
}

/* ------------------------------------------------------------------ */
/* 12a. THE ASSISTANT                                                  */
/* ------------------------------------------------------------------ */

.chat {
  grid-column: text-start / note-end;
  overflow: hidden;
  border: 1px solid var(--rule);
  border-radius: 5px;
  background: var(--paper-raised);
}
.chat-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 12px 15px;
  border-bottom: 1px solid var(--rule);
  background: var(--paper-sunk);
}
.chat-head > div {
  display: grid;
  gap: 1px;
}
.chat-head strong {
  font-family: var(--font-label);
  font-size: 14px;
  font-weight: 650;
  color: var(--ink);
}
.chat-state {
  font-family: var(--font-data);
  font-size: 10px;
  letter-spacing: .05em;
  color: var(--ink-3);
}
.chat-state {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  text-transform: uppercase;
}
.chat-state i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 3px var(--signal-wash);
}
.chat-log {
  max-height: 320px;
  overflow-y: auto;
  padding: 18px 18px 13px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.msg {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
}
.msg-tag {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border: 1px solid var(--rule-strong);
  border-radius: 50%;
  background: var(--paper);
  font-family: var(--font-data);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.msg.is-bot .msg-tag { color: var(--signal); border-color: var(--signal); }
.msg-body {
  width: fit-content;
  max-width: min(44rem, 88%);
  padding: 9px 12px;
  border: 1px solid var(--rule);
  border-radius: 3px 12px 12px 12px;
  background: var(--paper-sunk);
  font-family: var(--font-label);
  font-size: 14.5px;
  line-height: 1.55;
  margin: 0;
  color: var(--ink);
}
.msg.is-you { grid-template-columns: minmax(0, 1fr) 30px; }
.msg.is-you .msg-tag {
  grid-column: 2;
  grid-row: 1;
  color: var(--paper);
  background: var(--ink);
  border-color: var(--ink);
}
.msg.is-you .msg-body {
  grid-column: 1;
  grid-row: 1;
  justify-self: end;
  color: var(--paper);
  background: var(--signal);
  border-color: var(--signal);
  border-radius: 12px 3px 12px 12px;
}

.chat-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 7.5px;
  padding: 0 18px 14px 58px;
}
.chat-chips button {
  font-family: var(--font-label);
  font-size: 12.5px;
  font-weight: 500;
  color: var(--ink-2);
  background: var(--paper-sunk);
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 6px 11px;
  cursor: pointer;
  transition: border-color 160ms var(--ease-tick), color 160ms var(--ease-tick), background-color 160ms var(--ease-tick);
}
.chat-chips button:hover {
  border-color: var(--signal);
  color: var(--signal);
  background: var(--signal-wash);
}

.chat-bar {
  display: flex;
  gap: 7.5px;
  margin: 0 18px 18px;
  padding: 4px 4px 4px 12px;
  border: 1px solid var(--rule-strong);
  border-radius: 6px;
  background: var(--paper-raised);
  transition: border-color 160ms var(--ease-tick), box-shadow 160ms var(--ease-tick);
}
.chat-bar:focus-within {
  border-color: var(--signal);
  box-shadow: 0 0 0 2px var(--signal-wash);
}
.chat-bar input {
  flex: 1;
  min-width: 0;
  font-family: var(--font-label);
  font-size: 15px;
  color: var(--ink);
  background: transparent;
  border: 0;
  padding: 7px 0;
}
.chat-bar input::placeholder { color: var(--ink-3); }
.chat-bar input:focus-visible { outline: 0; }
.chat-bar .email-card {
  padding: 8px 16px;
  border-color: var(--signal);
  border-radius: 4px;
  color: var(--paper);
  background: var(--signal);
}
.chat-bar .email-card:hover {
  color: var(--paper);
  background: var(--signal-lift);
  border-color: var(--signal-lift);
  translate: 0;
}
@media (max-width: 40rem) {
  .chat-log { padding-inline: 14px; }
  .msg-body { max-width: 94%; }
  .chat-chips { padding-inline: 14px; }
  .chat-bar { margin-inline: 14px; }
}

/* ------------------------------------------------------------------ */
/* 12b. OUTRO + CURSOR                                                 */
/* ------------------------------------------------------------------ */

.outro {
  max-width: var(--page-max);
  margin: calc(var(--line) * 3) auto 0;
  padding: 0 var(--edge);
}
.outro p {
  max-width: 42rem;
  margin: 0 auto;
  padding: var(--line) 0;
  border-top: 1px solid var(--rule);
  font-size: 21px;
  line-height: 34px;
  text-align: center;
}
.outro em { color: var(--signal); font-style: italic; }

/* the click ripple: one ring per click, then gone. compositor-only. */
.ping {
  position: fixed;
  width: 56px; height: 56px;
  margin: -28px 0 0 -28px;
  pointer-events: none;
  z-index: 70;
  border: 1.5px solid var(--signal);
  border-radius: 50%;
  transform: scale(.12);
  opacity: .75;
  animation: ping-out 480ms var(--ease-quiet) forwards;
}
@keyframes ping-out {
  to { transform: scale(1); opacity: 0; }
}

/* ------------------------------------------------------------------ */
/* 13. FOOTER                                                          */
/* ------------------------------------------------------------------ */

.page-footer {
  margin-top: calc(var(--line) * 3);
  border-top: 1px solid var(--rule-strong);
  padding-block: calc(var(--line) * 1.5);
  font-family: var(--font-label);
  font-size: 14px;
  color: var(--ink-2);
}
.foot-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr auto;
  gap: var(--line) 3rem;
  align-items: start;
}
.foot-name { font-weight: 650; font-size: 16px; color: var(--ink); margin-bottom: 2px; }
.foot-sub { color: var(--ink-3); }
.foot-toc { display: grid; gap: 6px; }
.foot-toc a { color: var(--ink-2); text-decoration: none; width: fit-content; }
.foot-toc a:hover { color: var(--signal); }
.foot-legal {
  margin-top: var(--line);
  padding-top: 15px;
  border-top: 1px solid var(--rule);
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--ink-3);
}
@media (max-width: 64rem) { .foot-grid { grid-template-columns: 1fr; } }

/* ------------------------------------------------------------------ */
/* 14. MOTION GUARD                                                    */
/* ------------------------------------------------------------------ */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }
  html { scroll-behavior: auto; }
  .progress { display: none; }
}

/* ------------------------------------------------------------------ */
/* 15. PRINT                                                           */
/* ------------------------------------------------------------------ */

@media print {
  :root { color-scheme: light; }
  body { font-size: 11pt; background: #fff; color: #000; }
  .spine, .anchor, .progress, .topbar nav, .banner { display: none; }
  .hero-wrap, main, .page-footer { display: block; max-width: none; }
  a[href^="http"]::after { content: " (" attr(href) ")"; font-size: 9pt; color: #444; border: 0; }
  a[href^="#"]::after { content: ""; }
  .pop-body { display: block !important; position: static; border: 0; box-shadow: none; font-size: 9pt; }
  .rv { opacity: 1 !important; translate: 0 !important; }
  section { break-inside: avoid; }
}