/* =========================================================================
   Jiha Kim — academic CV
   Modern editorial: variable sans UI, one high-contrast serif for display.
   ========================================================================= */

/* ---- Design tokens ---------------------------------------------------- */

:root {
  /* Surfaces & ink — warm paper, soft ink, oxblood accent */
  --paper:        oklch(97.5% 0.008 85);
  --paper-raised: oklch(99.4% 0.004 85);
  --paper-sunk:   oklch(95.4% 0.010 85);
  --ink:          oklch(21% 0.014 45);
  --ink-soft:     oklch(45% 0.012 45);
  --ink-faint:    oklch(60% 0.010 45);
  --rule:         oklch(21% 0.014 45 / 0.12);
  --rule-strong:  oklch(21% 0.014 45 / 0.38);
  --accent:       oklch(45% 0.128 30);
  --accent-soft:  oklch(45% 0.128 30 / 0.10);

  /* Categorical chart palette — validated (light): all six checks pass.
     Shape is carried alongside hue as secondary encoding, since the
     teal/oxblood pair sits in the 6–8 deutan band. */
  --cat-1: #93331F;  /* journal        — circle   */
  --cat-2: #0F8A6E;  /* international  — square   */
  --cat-3: #A8760F;  /* domestic       — triangle */
  --cat-4: #3A4FA6;  /* under review   — ring     */

  /* Type — one display serif, one variable sans, system mono for data */
  --font-display: "Instrument Serif", ui-serif, Georgia, serif;
  --font-sans: "Inter", "Pretendard Variable", Pretendard, -apple-system,
               BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, monospace;

  --text-display: clamp(3.4rem, 1rem + 9vw, 9rem);
  --text-h2:      clamp(0.8rem, 0.76rem + 0.16vw, 0.9rem);
  --text-h3:      clamp(1.1rem, 1rem + 0.45vw, 1.35rem);
  --text-lead:    clamp(1.2rem, 1.02rem + 0.8vw, 1.75rem);
  --text-base:    clamp(0.975rem, 0.94rem + 0.16vw, 1.04rem);
  --text-small:   0.86rem;
  --text-micro:   0.7rem;

  /* Rhythm — deliberately uneven */
  --space-section: clamp(4.5rem, 3rem + 6vw, 8.5rem);
  --space-entry:   clamp(1.6rem, 1.3rem + 1.2vw, 2.4rem);
  --gutter:        clamp(1.25rem, 0.8rem + 3vw, 5rem);
  --measure:       66ch;

  --duration: 240ms;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper:        oklch(17.5% 0.010 50);
    --paper-raised: oklch(21.5% 0.012 50);
    --paper-sunk:   oklch(14.5% 0.009 50);
    --ink:          oklch(93% 0.010 85);
    --ink-soft:     oklch(72% 0.011 85);
    --ink-faint:    oklch(56% 0.010 85);
    --rule:         oklch(93% 0.010 85 / 0.14);
    --rule-strong:  oklch(93% 0.010 85 / 0.36);
    --accent:       oklch(74% 0.112 40);
    --accent-soft:  oklch(74% 0.112 40 / 0.15);
    --cat-1: #C46A50;
    --cat-2: #1FA687;
    --cat-3: #B4881F;
    --cat-4: #6E82DA;
  }
}

:root[data-theme="light"] {
  --paper:        oklch(97.5% 0.008 85);
  --paper-raised: oklch(99.4% 0.004 85);
  --paper-sunk:   oklch(95.4% 0.010 85);
  --ink:          oklch(21% 0.014 45);
  --ink-soft:     oklch(45% 0.012 45);
  --ink-faint:    oklch(60% 0.010 45);
  --rule:         oklch(21% 0.014 45 / 0.12);
  --rule-strong:  oklch(21% 0.014 45 / 0.38);
  --accent:       oklch(45% 0.128 30);
  --accent-soft:  oklch(45% 0.128 30 / 0.10);
  --cat-1: #93331F; --cat-2: #0F8A6E; --cat-3: #A8760F; --cat-4: #3A4FA6;
}

:root[data-theme="dark"] {
  --paper:        oklch(17.5% 0.010 50);
  --paper-raised: oklch(21.5% 0.012 50);
  --paper-sunk:   oklch(14.5% 0.009 50);
  --ink:          oklch(93% 0.010 85);
  --ink-soft:     oklch(72% 0.011 85);
  --ink-faint:    oklch(56% 0.010 85);
  --rule:         oklch(93% 0.010 85 / 0.14);
  --rule-strong:  oklch(93% 0.010 85 / 0.36);
  --accent:       oklch(74% 0.112 40);
  --accent-soft:  oklch(74% 0.112 40 / 0.15);
  --cat-1: #C46A50; --cat-2: #1FA687; --cat-3: #B4881F; --cat-4: #6E82DA;
}

/* ---- Base ------------------------------------------------------------- */

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  font-optical-sizing: auto;
  font-synthesis-weight: none;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { margin: 0; line-height: 1.15; font-weight: 500; }
p { margin: 0 0 0.9em; max-width: var(--measure); }
ul { margin: 0; padding: 0; list-style: none; }

a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid var(--rule-strong);
  transition: color var(--duration) var(--ease),
              border-color var(--duration) var(--ease);
}
a:hover { color: var(--accent); border-bottom-color: var(--accent); }

a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 3px;
}

::selection { background: var(--accent-soft); }

/* Shared micro-label treatment (mono, wide tracking) */
.label,
.masthead__name, .pill, .hero__eyebrow, .section__title, .section__count,
.subhead, .identity__key, .entry__meta, .patent__no, .tag, .chip, .flag,
.pillar__num, .footer__note, .stat__key, .chart__legend, .chart text {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
}

.skip-link {
  position: absolute; left: -9999px; top: 0;
  padding: 0.75rem 1.25rem;
  background: var(--ink); color: var(--paper); z-index: 100;
}
.skip-link:focus { left: 0; }

/* ---- Bilingual switching (CSS-driven, works without JS) --------------- */

:root[lang="en"] [data-l="ko"] { display: none; }
:root[lang="ko"] [data-l="en"] { display: none; }

/* ---- Layout ----------------------------------------------------------- */

.shell { width: min(100% - 2 * var(--gutter), 78rem); margin-inline: auto; }

/* ---- Masthead --------------------------------------------------------- */

.masthead {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding-block: 0.8rem;
  background: color-mix(in oklab, var(--paper) 86%, transparent);
  backdrop-filter: blur(14px) saturate(1.5);
  border-bottom: 1px solid var(--rule);
}

.masthead__name {
  font-size: var(--text-micro);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  border: 0;
}

.masthead__tools { display: flex; align-items: center; gap: 0.4rem; }

.pill {
  font-size: var(--text-micro);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  background: none;
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 0.34rem 0.72rem;
  cursor: pointer;
  transition: color var(--duration) var(--ease),
              border-color var(--duration) var(--ease),
              background-color var(--duration) var(--ease);
}
.pill:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }
.pill[aria-pressed="true"] { color: var(--ink); border-color: var(--rule-strong); }

/* ---- Hero ------------------------------------------------------------- */

.hero { padding-block: clamp(3rem, 1.5rem + 7vw, 7rem) 0; }

.hero__eyebrow {
  font-size: var(--text-micro);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: clamp(1.25rem, 0.8rem + 2vw, 2.25rem);
}

.hero__name {
  font-family: var(--font-display);
  font-size: var(--text-display);
  font-weight: 400;
  line-height: 0.85;
  letter-spacing: -0.02em;
  margin-bottom: 0.1em;
}
.hero__name em { font-style: italic; color: var(--accent); }

.hero__ko {
  display: block;
  font-family: var(--font-sans);
  font-size: clamp(1rem, 0.85rem + 0.8vw, 1.5rem);
  font-weight: 400;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
  margin-top: 0.7em;
  line-height: 1;
}

.hero__grid {
  display: grid; gap: clamp(2rem, 1rem + 4vw, 4rem);
  grid-template-columns: 1fr;
  margin-top: clamp(2.25rem, 1.5rem + 3vw, 3.5rem);
  padding-top: clamp(1.75rem, 1rem + 2.5vw, 2.75rem);
  border-top: 1px solid var(--rule);
}

@media (min-width: 56rem) {
  .hero__grid { grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); }
}

.hero__lead {
  font-size: var(--text-lead);
  line-height: 1.35;
  letter-spacing: -0.015em;
  font-weight: 400;
  text-wrap: pretty;
}
.hero__lead strong { font-weight: 600; color: var(--accent); }

.identity { display: grid; gap: 0.55rem; align-content: start; }

.identity__row {
  display: grid; grid-template-columns: 6rem minmax(0, 1fr); gap: 1rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--rule);
  font-size: var(--text-small);
}

.identity__key {
  font-size: var(--text-micro);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  padding-top: 0.25em;
}

.identity__val { color: var(--ink-soft); }
.identity__val a { border-bottom-color: var(--rule); }

/* ---- Hero visual: multi-link operation ------------------------------- */

.mlo {
  margin-top: clamp(2.5rem, 1.5rem + 4vw, 4rem);
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--paper-raised);
  padding: clamp(1.1rem, 0.8rem + 1.2vw, 1.75rem);
  overflow: hidden;
}

.mlo__head {
  display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem;
  align-items: baseline; justify-content: space-between;
  margin-bottom: 1.1rem;
}

.mlo__title {
  font-size: var(--text-micro);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
  font-family: var(--font-mono);
}

.mlo__note { font-size: var(--text-micro); color: var(--ink-faint); margin: 0; font-family: var(--font-mono); }

.mlo svg { display: block; width: 100%; height: auto; }
.mlo .band-label { fill: var(--ink-faint); font-size: 9px; letter-spacing: 0.12em; }
.mlo .lane { fill: var(--paper-sunk); }
.mlo .tick { stroke: var(--rule); stroke-width: 1; }
.mlo .pkt { fill: var(--ink); opacity: 0.16; rx: 1.5; }
.mlo .pkt--active { fill: var(--accent); opacity: 1; }
.mlo .pkt--wait { fill: none; stroke: var(--rule-strong); stroke-width: 1; stroke-dasharray: 2 2; }
.mlo .radio { fill: none; stroke: var(--accent); stroke-width: 1.5; }

@media (prefers-reduced-motion: no-preference) {
  .mlo .pkt--active { animation: pktPulse 3.6s var(--ease) infinite; }
  .mlo .pkt--active:nth-of-type(2n) { animation-delay: 1.2s; }
  .mlo .pkt--active:nth-of-type(3n) { animation-delay: 2.4s; }
  .mlo .radio { animation: radioSlide 7.2s cubic-bezier(0.6, 0, 0.4, 1) infinite; }
}

@keyframes pktPulse { 0%, 70%, 100% { opacity: 1; } 85% { opacity: 0.35; } }
@keyframes radioSlide {
  0%, 26%   { transform: translateY(0); }
  33%, 59%  { transform: translateY(28px); }
  66%, 92%  { transform: translateY(56px); }
  100%      { transform: translateY(0); }
}

/* ---- Stat row --------------------------------------------------------- */

.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--rule);
  border-top: 1px solid var(--rule);
  margin-top: clamp(2.5rem, 1.5rem + 4vw, 4rem);
}

@media (min-width: 44rem) { .stats { grid-template-columns: repeat(3, 1fr); } }

.stat__note { display: block; margin-top: 0.3rem; font-family: var(--font-mono);
              font-size: var(--text-micro); color: var(--ink-faint); opacity: 0.75; }

.stat {
  background: var(--paper);
  padding: clamp(1.2rem, 1rem + 1vw, 1.9rem) clamp(0.9rem, 0.7rem + 0.8vw, 1.4rem);
}

.stat__val {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 1.8rem + 3.2vw, 4.25rem);
  font-weight: 400;
  line-height: 0.9;
  letter-spacing: -0.02em;
  color: var(--ink);
  display: block;
}

.stat__key {
  display: block;
  margin-top: 0.7rem;
  font-size: var(--text-micro);
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* ---- Section scaffolding ---------------------------------------------- */

.section { padding-block: var(--space-section); border-top: 1px solid var(--rule); }

.section__head {
  display: flex; align-items: center; gap: 1rem;
  margin-bottom: clamp(1.75rem, 1.2rem + 2.5vw, 3rem);
}

.section__title {
  font-size: var(--text-h2);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  white-space: nowrap;
  font-weight: 500;
}

.section__rule { flex: 1; height: 1px; background: var(--rule-strong); }
.section__count { font-size: var(--text-micro); color: var(--ink-faint); letter-spacing: 0.1em; }

.subhead {
  font-size: var(--text-micro);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--accent-soft);
}

.pubgroup + .pubgroup { margin-top: clamp(2.75rem, 2rem + 3vw, 4rem); }

/* ---- Publication timeline chart --------------------------------------- */

.chart {
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--paper-raised);
  padding: clamp(1.1rem, 0.8rem + 1.2vw, 1.75rem);
  margin-bottom: clamp(2.25rem, 1.5rem + 2.5vw, 3.25rem);
}

.chart__title { font-size: var(--text-small); font-weight: 500; margin-bottom: 0.2rem; }
.chart__sub { font-size: var(--text-micro); color: var(--ink-faint); margin-bottom: 1.1rem; font-family: var(--font-mono); }

.chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart .axis { stroke: var(--rule); stroke-width: 1; }
.chart .yr { fill: var(--ink-soft); font-size: 10px; letter-spacing: 0.08em; }

.chart .mark {
  transition: transform var(--duration) var(--ease);
  transform-box: fill-box;
  transform-origin: center;
  cursor: default;
}
.chart .mark:hover { transform: scale(1.32); }
.chart .m1 { fill: var(--cat-1); }
.chart .m2 { fill: var(--cat-2); }
.chart .m3 { fill: var(--cat-3); }
.chart .m4 { fill: none; stroke: var(--cat-4); stroke-width: 2.2; }

.chart__legend {
  display: flex; flex-wrap: wrap; gap: 0.5rem 1.4rem;
  margin-top: 1.1rem; padding-top: 0.9rem;
  border-top: 1px solid var(--rule);
  font-size: var(--text-micro);
  color: var(--ink-soft);
  letter-spacing: 0.08em;
}

.chart__legend li { display: flex; align-items: center; gap: 0.45rem; }
.chart__legend svg { width: 12px; height: 12px; flex: none; }

/* ---- Research pillars ------------------------------------------------- */

.pillars { display: grid; gap: 1px; background: var(--rule); border-block: 1px solid var(--rule); }

@media (min-width: 48rem) { .pillars { grid-template-columns: repeat(3, 1fr); } }

.pillar {
  background: var(--paper);
  padding: clamp(1.5rem, 1.1rem + 1.8vw, 2.4rem) clamp(1.1rem, 0.9rem + 1.2vw, 1.8rem);
  transition: background-color var(--duration) var(--ease);
}
.pillar:hover { background: var(--paper-raised); }

.pillar__num {
  font-size: var(--text-micro); color: var(--accent);
  letter-spacing: 0.14em; display: block; margin-bottom: 1rem;
}

.pillar__fig { display: block; width: 100%; height: 62px; margin-bottom: 1.1rem; overflow: visible; }
.pillar__fig .s { stroke: var(--ink-faint); fill: none; stroke-width: 1.25; }
.pillar__fig .a { stroke: var(--accent); fill: none; stroke-width: 1.75; }
.pillar__fig .f { fill: var(--accent); }
.pillar__fig .fd { fill: var(--ink-faint); opacity: 0.5; }

.pillar__title {
  font-size: var(--text-h3); line-height: 1.22; letter-spacing: -0.012em;
  margin-bottom: 0.75rem; text-wrap: balance; font-weight: 500;
}

.pillar__body { color: var(--ink-soft); font-size: var(--text-small); margin: 0; }

.pillar__tags { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-top: 1.1rem; }

.tag {
  font-size: var(--text-micro); color: var(--ink-faint);
  border: 1px solid var(--rule); border-radius: 999px;
  padding: 0.16rem 0.55rem; white-space: nowrap;
}

/* ---- Publication / entry list ---------------------------------------- */

.entry {
  display: grid; gap: 0.35rem 2rem; grid-template-columns: 1fr;
  padding-block: var(--space-entry);
  border-top: 1px solid var(--rule);
}
.entry:last-child { border-bottom: 1px solid var(--rule); }

@media (min-width: 48rem) { .entry { grid-template-columns: 8.5rem minmax(0, 1fr); } }

.entry__meta {
  font-size: var(--text-micro); letter-spacing: 0.1em;
  color: var(--ink-faint); padding-top: 0.5em;
  display: flex; flex-direction: column; gap: 0.4rem; align-items: start;
}

.entry__year { color: var(--ink); font-size: var(--text-small); font-weight: 500; }

.entry__title {
  font-size: var(--text-h3); line-height: 1.3; letter-spacing: -0.012em;
  margin-bottom: 0.45rem; text-wrap: pretty; font-weight: 500;
}

.entry__authors { font-size: var(--text-small); color: var(--ink-soft); margin-bottom: 0.3rem; }
.entry__authors .me { color: var(--ink); font-weight: 600; }

.entry__venue { font-size: var(--text-small); color: var(--ink-soft); margin-bottom: 0; }
.entry__venue b { font-weight: 600; color: var(--ink); }

/* Result figures pulled from the paper — scannable evidence */
.results { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.9rem; }

.result {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-micro);
  letter-spacing: 0.02em;
  color: var(--ink-soft);
  background: var(--paper-sunk);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 0.26rem 0.55rem;
  white-space: nowrap;
}
.result b { color: var(--accent); font-weight: 600; }

.flag {
  font-size: var(--text-micro); letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--accent); border: 1px solid currentColor; border-radius: 3px;
  padding: 0.14rem 0.42rem; white-space: nowrap;
}

/* Collapsible abstract */
details.abstract { margin-top: 0.85rem; }

details.abstract > summary {
  font-family: var(--font-mono);
  font-size: var(--text-micro); letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-faint); cursor: pointer; list-style: none;
  display: inline-flex; align-items: center; gap: 0.45rem;
  transition: color var(--duration) var(--ease);
}
details.abstract > summary::-webkit-details-marker { display: none; }
details.abstract > summary:hover { color: var(--accent); }
details.abstract > summary::before {
  content: "+"; font-size: 0.95rem; line-height: 1;
  transition: transform var(--duration) var(--ease);
}
details.abstract[open] > summary::before { transform: rotate(45deg); }

.abstract__body {
  font-size: var(--text-small); color: var(--ink-soft);
  margin: 0.85rem 0 0; padding-left: 1rem;
  border-left: 2px solid var(--accent-soft);
  max-width: var(--measure);
}

/* ---- Patents ---------------------------------------------------------- */

.patent {
  display: grid; gap: 0.25rem 2rem; grid-template-columns: 1fr;
  padding-block: clamp(1.1rem, 0.9rem + 1vw, 1.7rem);
  border-top: 1px solid var(--rule);
}
.patent:last-child { border-bottom: 1px solid var(--rule); }

@media (min-width: 48rem) { .patent { grid-template-columns: 8.5rem minmax(0, 1fr); } }

.patent__title { font-size: 1.02rem; line-height: 1.38; margin-bottom: 0.28rem; text-wrap: pretty; font-weight: 500; }
.patent__no { font-size: var(--text-micro); color: var(--ink-faint); }

/* ---- Timeline --------------------------------------------------------- */

.timeline { border-top: 1px solid var(--rule); }

.timeline__item {
  display: grid; gap: 0.3rem 2rem; grid-template-columns: 1fr;
  padding-block: var(--space-entry);
  border-bottom: 1px solid var(--rule);
}

@media (min-width: 48rem) { .timeline__item { grid-template-columns: 8.5rem minmax(0, 1fr); } }

.timeline__title { font-size: var(--text-h3); line-height: 1.28; margin-bottom: 0.3rem; letter-spacing: -0.012em; font-weight: 500; }
.timeline__org { font-size: var(--text-small); color: var(--ink-soft); margin-bottom: 0.45rem; }
.timeline__body { font-size: var(--text-small); color: var(--ink-soft); margin: 0; }

/* ---- Footer ----------------------------------------------------------- */

.footer { padding-block: clamp(2.75rem, 2rem + 3vw, 5rem) 2.75rem; border-top: 1px solid var(--rule-strong); }

.footer__grid {
  display: flex; flex-wrap: wrap; gap: 1.25rem 2.5rem;
  align-items: baseline; justify-content: space-between;
}

.footer__note { font-size: var(--text-micro); color: var(--ink-faint); letter-spacing: 0.06em; }
.footer__links { display: flex; flex-wrap: wrap; gap: 1.15rem; }
.footer__links a { font-size: var(--text-small); border-bottom-color: var(--rule); }

/* ---- Trajectory / span tracks ----------------------------------------
   Themes and projects are named in their own row, so the label carries
   identity and one accent hue is enough — no second categorical palette. */

.traj { margin-top: clamp(2rem, 1.5rem + 2.5vw, 3.25rem); }

.traj__row {
  display: grid; grid-template-columns: 1fr; gap: 0.5rem;
  padding-block: 0.85rem;
  border-top: 1px solid var(--rule);
  align-items: center;
}
.traj__row:last-child { border-bottom: 1px solid var(--rule); }

.traj__scale { display: grid; grid-template-columns: 1fr; gap: 0.5rem; padding-bottom: 0.4rem; }

@media (min-width: 46rem) {
  .traj__row, .traj__scale { grid-template-columns: 15.5rem minmax(0, 1fr); gap: 1.5rem; }
}

.traj__name { font-size: var(--text-small); font-weight: 500; line-height: 1.3; text-wrap: balance; }
.traj__name small { display: block; font-weight: 400; color: var(--ink-faint); font-size: var(--text-micro); margin-top: 0.15rem; }

.traj__years, .traj__rail { display: grid; grid-template-columns: repeat(6, 1fr); align-items: center; }
.traj__years--5, .traj__rail--5 { grid-template-columns: repeat(5, 1fr); }
.traj__years--7, .traj__rail--7 { grid-template-columns: repeat(7, 1fr); }

.traj__years span {
  font-family: var(--font-mono); font-size: var(--text-micro);
  color: var(--ink-faint); letter-spacing: 0.08em; text-align: center;
}

.traj__rail { position: relative; min-height: 26px; }
.traj__rail::before {
  content: ""; position: absolute; inset-inline: 0; top: 50%;
  height: 1px; background: var(--rule);
}

/* Filled span with an output count — research themes */
.traj__bar {
  position: relative; height: 24px; border-radius: 3px;
  background: color-mix(in oklab, var(--accent) 16%, transparent);
  border: 1px solid color-mix(in oklab, var(--accent) 42%, transparent);
  display: flex; align-items: center; justify-content: flex-end;
  padding-inline: 0.55rem;
  font-family: var(--font-mono); font-variant-numeric: tabular-nums;
  font-size: var(--text-micro); color: var(--accent); letter-spacing: 0.04em;
}

/* Hairline span with end caps — projects (a different mark, on purpose) */
.traj__span {
  position: relative; height: 2px; background: var(--accent);
  align-self: center; margin-block: 11px;
}
.traj__span::before {
  content: ""; position: absolute; left: -1px; top: 50%;
  width: 9px; height: 9px; margin-top: -4.5px; border-radius: 50%;
  background: var(--accent);
}
.traj__span::after {
  content: ""; position: absolute; right: -1px; top: 50%;
  width: 9px; height: 9px; margin-top: -4.5px; border-radius: 50%;
  background: var(--accent);
}
/* Open-ended: arrowhead instead of a terminal dot */
.traj__span--open::after {
  width: 0; height: 0; margin-top: -4px; right: -6px; border-radius: 0;
  background: none;
  border-left: 7px solid var(--accent);
  border-block: 4px solid transparent;
}

/* ---- Patent timeline (dots on a year axis) ---------------------------- */

.ptl { margin-bottom: clamp(1.75rem, 1.2rem + 2vw, 2.75rem); }
.ptl svg { display: block; width: 100%; height: auto; overflow: visible; }
.ptl .axis { stroke: var(--rule-strong); stroke-width: 1; }
.ptl .dot { fill: var(--accent); transition: transform var(--duration) var(--ease);
            transform-box: fill-box; transform-origin: center; }
.ptl .dot:hover { transform: scale(1.3); }
.ptl .yr { fill: var(--ink-soft); font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em; }
.ptl .ct { fill: var(--ink-faint); font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.06em; }

/* ---- Motion ----------------------------------------------------------- */

.reveal {
  opacity: 0; transform: translateY(12px);
  transition: opacity 640ms var(--ease), transform 640ms var(--ease);
}
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---- Print ------------------------------------------------------------ */

@media print {
  :root {
    --paper: #fff; --paper-raised: #fff; --paper-sunk: #f4f4f4;
    --ink: #000; --ink-soft: #333; --ink-faint: #555;
    --rule: #ccc; --rule-strong: #888; --accent: #000;
  }
  .masthead, .footer__links, .skip-link, .pill, .mlo { display: none; }
  .section, .hero { padding-block: 1.4rem; break-inside: avoid; }
  .entry, .patent, .timeline__item, .chart, .stats { break-inside: avoid; }
  details.abstract { display: none; }
  a { border-bottom: 0; }
}