/* Layout: one reading column; a mono date rail on the left of every entry, like a lab notebook. The hero carries a capacity-fade curve, the shape of the work. */
:root {
  --bg: #f5f7f9;
  --surface: #ffffff;
  --fg: #15202b;
  --muted: #5a6876;
  --line: #dde3ea;
  --accent: #2149c9;
  --knee: #c97a00;
  --font-display: "Instrument Serif", "Iowan Old Style", Georgia, serif;
  --font-body: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
  --step--1: 0.8125rem;
  --step-0: 1rem;
  --step-1: 1.25rem;
  --step-3: 2rem;
  --step-5: clamp(2.75rem, 7vw, 4.5rem);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e1419; --surface: #151d24; --fg: #e4eaf0; --muted: #94a3b1;
    --line: #26323d; --accent: #86a4ff; --knee: #f0a93a; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0e1419; --surface: #151d24; --fg: #e4eaf0; --muted: #94a3b1;
  --line: #26323d; --accent: #86a4ff; --knee: #f0a93a; color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 4.5rem; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 400 var(--step-0)/1.6 var(--font-body);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-underline-offset: 0.2em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }
img { max-width: 100%; display: block; }

.wrap { max-width: 52rem; margin: 0 auto; padding-inline: 1.25rem; }

/* Top bar */
.bar {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.bar .wrap { display: flex; align-items: center; gap: 1.5rem; padding-block: 0.75rem; }
.bar .mark { font-family: var(--font-display); font-size: var(--step-1); color: var(--fg); text-decoration: none; white-space: nowrap; }
.bar nav { display: flex; gap: 1.25rem; overflow-x: auto; scrollbar-width: none; margin-left: auto; }
.bar nav a {
  font: 500 var(--step--1)/1 var(--font-mono); letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--muted); text-decoration: none; white-space: nowrap; padding-block: 0.35rem;
}
.bar nav a:hover { color: var(--fg); }

/* Hero */
.hero { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 2rem; align-items: center; padding-block: 3.5rem 2.5rem; }
.hero img { width: 10rem; height: auto; aspect-ratio: 285 / 425; border-radius: 4px; filter: saturate(0.9); }
.hero h1 { font: 400 var(--step-5)/1 var(--font-display); margin: 0 0 0.75rem; letter-spacing: -0.01em; text-wrap: balance; }
.hero h1 em { color: var(--muted); font-size: 0.5em; vertical-align: 0.6em; margin-right: 0.15em; }
.role { font-size: var(--step-1); line-height: 1.4; margin: 0 0 0.5rem; text-wrap: balance; }
.where { font: 400 var(--step--1)/1.5 var(--font-mono); color: var(--muted); margin: 0; }

.lede { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 17rem); gap: 2.5rem; align-items: start; padding-bottom: 2.5rem; border-bottom: 1px solid var(--line); }
.lede p { margin: 0 0 1rem; max-width: 62ch; }
.links { display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem; margin-top: 1.25rem; font-size: var(--step--1); }
.links a { font-family: var(--font-mono); }
.copy { font: inherit; font-family: var(--font-mono); color: var(--fg); background: none; border: 0; padding: 0; cursor: pointer; }
.copy[data-done]::after { content: "copied"; color: var(--muted); font-size: 0.85em; }

.ico { width: 1.05em; height: 1.05em; flex: none; fill: currentColor; }
.links a, .links .copy { display: inline-flex; align-items: center; gap: 0.45em; }
.links a { color: var(--fg); text-decoration: none; }
.links .lbl-t { text-decoration: underline; text-decoration-color: var(--line); text-underline-offset: 0.25em; }
.links a:hover, .links .copy:hover { color: var(--accent); }
.links a:hover .lbl-t, .links .copy:hover .lbl-t { text-decoration-color: currentColor; }
.links .ico { color: var(--muted); transition: color .15s; }
.links a:hover .ico, .links .copy:hover .ico { color: var(--accent); }
.social { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.social a { display: grid; place-items: center; width: 2.25rem; height: 2.25rem; border: 1px solid var(--line); border-radius: 50%; color: var(--muted); }
.social a:hover { color: var(--accent); border-color: var(--accent); }
.social .ico { width: 1rem; height: 1rem; }

/* Capacity fade figure */
figure.fade { margin: 0; }
figure.fade svg { width: 100%; height: auto; display: block; overflow: visible; }
figure.fade figcaption { font: 400 0.75rem/1.45 var(--font-mono); color: var(--muted); margin-top: 0.5rem; }
.ax { stroke: var(--line); stroke-width: 1; fill: none; }
.band { fill: var(--accent); opacity: 0.06; }
.band-r { fill: var(--muted); opacity: 0.1; }
.eol { stroke: var(--muted); stroke-width: 1; stroke-dasharray: 3 4; fill: none; }
.curve { stroke: var(--accent); stroke-width: 2.25; fill: none; stroke-linecap: round; }
.hi { stroke: var(--knee); stroke-width: 1.75; fill: none; stroke-linecap: round; stroke-dasharray: 5 3; }
.second { stroke: var(--accent); stroke-width: 2.25; fill: none; stroke-dasharray: 2 5; stroke-linecap: round; }
.kneept { fill: var(--knee); }
.kneept.lo { fill: var(--accent); }
.recy { fill: var(--muted); }
.ext { stroke: var(--knee); stroke-width: 1.25; fill: none; }
.arrhead { fill: var(--knee); }
.lbl { font: 400 10px var(--font-mono); fill: var(--muted); }
.lbl.zone { fill: var(--fg); opacity: 0.75; }
.lbl-k { font: 500 10px var(--font-mono); fill: var(--knee); }

/* Sections */
section { padding-block: 3rem 1rem; }
h2 {
  display: flex; align-items: baseline; gap: 0.75rem;
  font: 400 var(--step-3)/1.1 var(--font-display); margin: 0 0 1.75rem;
}
h2 small { font: 500 0.6875rem/1 var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }

.entry { display: grid; grid-template-columns: 8.5rem minmax(0, 1fr); gap: 1.5rem; padding-block: 1.1rem; border-top: 1px solid var(--line); }
.entry:first-of-type { border-top: 0; padding-top: 0; }
.when { font: 400 var(--step--1)/1.6 var(--font-mono); color: var(--muted); font-variant-numeric: tabular-nums; padding-top: 0.15rem; }
.entry h3 { font-size: var(--step-0); font-weight: 600; margin: 0; line-height: 1.45; }
.entry .org { color: var(--muted); font-weight: 400; }
.entry p { margin: 0.35rem 0 0; max-width: 62ch; }
.entry ul { margin: 0.5rem 0 0; padding-left: 1.1rem; max-width: 62ch; }
.entry li { margin-bottom: 0.3rem; }
.entry li::marker { color: var(--muted); }
.roles { list-style: none; padding: 0 !important; margin: 0.15rem 0 0.4rem !important; }
.roles li { font-size: var(--step--1); color: var(--muted); font-family: var(--font-mono); }
.roles li b { color: var(--fg); font-family: var(--font-body); font-weight: 600; font-size: var(--step-0); }
.now { display: inline-block; font: 500 0.6875rem/1 var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--accent); border: 1px solid currentColor; border-radius: 3px; padding: 0.2rem 0.35rem; margin-left: 0.4rem; vertical-align: 0.15em; }

.earlier { margin-top: 0.5rem; border-top: 1px solid var(--line); }
.earlier summary { cursor: pointer; padding-block: 1rem; font: 500 var(--step--1)/1 var(--font-mono); letter-spacing: 0.04em; text-transform: uppercase; color: var(--muted); }
.earlier summary:hover { color: var(--fg); }

/* Research */
.metrics { display: flex; flex-wrap: wrap; gap: 2rem; margin-bottom: 1.75rem; font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.metrics div { display: grid; gap: 0.15rem; }
.metrics b { font: 400 var(--step-3)/1 var(--font-display); }
.metrics span { font-size: 0.75rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; }
.pubs { list-style: none; padding: 0; margin: 0; }
.pubs li { display: grid; grid-template-columns: 3.5rem minmax(0, 1fr) auto; gap: 1rem; padding-block: 0.9rem; border-top: 1px solid var(--line); align-items: baseline; }
.pubs .yr, .pubs .cit { font: 400 var(--step--1)/1.5 var(--font-mono); color: var(--muted); font-variant-numeric: tabular-nums; }
.pubs .cit { text-align: right; white-space: nowrap; }
.pubs .t { font-weight: 500; }
.pubs .meta { display: block; font-size: var(--step--1); color: var(--muted); margin-top: 0.2rem; }
.pubs .meta i { font-style: italic; }
.note { font-size: var(--step--1); color: var(--muted); margin-top: 1rem; }

.workshop p { margin: 0 0 1rem; max-width: 62ch; }
.vh { font: 500 0.75rem/1 var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); margin: 2rem 0 0.9rem; }
.shorts { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0.85rem; }
.shorts li { min-width: 0; }
.shorts a, .shorts iframe { display: block; position: relative; width: 100%; aspect-ratio: 9 / 16; border-radius: 6px; overflow: hidden; border: 0; background: var(--line); }
.shorts img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.shorts a::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgb(0 0 0 / .78), rgb(0 0 0 / 0) 55%); }
.shorts a span { position: absolute; z-index: 1; left: 0.75rem; right: 0.75rem; bottom: 0.7rem; color: #fff; font-size: var(--step--1); font-weight: 500; line-height: 1.35; text-wrap: balance; }
.shorts a small { display: block; margin-top: 0.3rem; font: 400 0.75rem/1 var(--font-mono); color: rgb(255 255 255 / .8); }
.shorts .play { position: absolute; z-index: 1; transition: opacity .2s, background .2s; top: 0.6rem; right: 0.6rem; width: 2rem; height: 2rem; padding: 0.45rem; border-radius: 50%; fill: #fff; background: rgb(0 0 0 / .45); }
.short .preview { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity .25s; pointer-events: none; }
.short.playing .preview { opacity: 1; }
.short.playing .play { opacity: 0; }
.shorts .badge { position: absolute; z-index: 1; top: 0.7rem; left: 0.7rem; font: 500 0.6875rem/1 var(--font-mono); font-style: normal; letter-spacing: 0.06em; text-transform: uppercase; color: #fff; background: var(--knee); padding: 0.3rem 0.45rem; border-radius: 3px; }
.shorts a:hover .play, .shorts a:focus-visible .play { background: var(--accent); }
.shorts a:hover img { transform: scale(1.03); }
@media (prefers-reduced-motion: reduce) { .shorts img, .shorts .play { transition: none; } .shorts a:hover img { transform: none; } }
.feature { display: grid; grid-template-columns: 13rem minmax(0, 1fr); gap: 1.75rem; align-items: center; margin-top: 2rem; padding: 1.25rem; background: var(--surface); border: 1px solid var(--line); border-radius: 8px; }
.feature .short { display: block; position: relative; aspect-ratio: 9 / 13; border-radius: 6px; overflow: hidden; }
.feature .short img { width: 100%; height: 100%; object-fit: cover; }
.feature .short span { display: none; }
.feature .play { position: absolute; top: 50%; left: 50%; translate: -50% -50%; width: 3.25rem; height: 3.25rem; padding: 0.8rem; border-radius: 50%; fill: #fff; background: rgb(0 0 0 / .5); transition: opacity .2s, background .2s; }
.feature .short:hover .play { background: var(--accent); }
.feature .vh { margin: 0 0 0.35rem; }
.feature .big { margin: 0 0 0.75rem; color: var(--muted); }
.feature .big b { font: 400 var(--step-5)/1 var(--font-display); color: var(--fg); margin-right: 0.35rem; font-variant-numeric: tabular-nums; }
.feature h3 { font-size: var(--step-1); font-weight: 600; margin: 0 0 0.5rem; line-height: 1.3; }
.feature p { margin: 0 0 1rem; }
.watch { display: inline-flex; align-items: center; gap: 0.5em; font: 500 var(--step--1)/1 var(--font-mono); padding: 0.6rem 0.9rem; border: 1px solid var(--accent); border-radius: 4px; text-decoration: none; }
.watch:hover { background: var(--accent); color: var(--surface); }
@media (max-width: 52rem) { .shorts { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 40rem) { .feature { grid-template-columns: 1fr; gap: 1.25rem; } .feature .short { max-width: 13rem; } }
.longs { list-style: none; padding: 0; margin: 0; }
.longs a { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 0.75rem; align-items: baseline; padding-block: 0.65rem; border-top: 1px solid var(--line); color: var(--fg); text-decoration: none; }
.longs li:last-child a { border-bottom: 1px solid var(--line); }
.longs .ico { color: var(--muted); align-self: center; }
.longs a:hover, .longs a:hover .ico { color: var(--accent); }
.longs time { font: 400 var(--step--1)/1 var(--font-mono); color: var(--muted); font-variant-numeric: tabular-nums; }

.channels { list-style: none; padding: 0; margin: 1.5rem 0 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr)); gap: 0.75rem; }
.channels a { display: grid; grid-template-columns: auto minmax(0, 1fr); column-gap: 0.85rem; align-items: center; padding: 0.9rem 1rem; background: var(--surface); border: 1px solid var(--line); border-radius: 4px; text-decoration: none; color: var(--fg); }
.channels a:hover { border-color: var(--accent); }
.channels b { font-weight: 600; }
.channels .ico { grid-row: span 2; width: 1.5rem; height: 1.5rem; color: var(--muted); }
.channels a:hover .ico { color: var(--accent); }
.channels span { font: 400 var(--step--1)/1.4 var(--font-mono); color: var(--accent); overflow-wrap: anywhere; }

/* Skills */
.skills { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.75rem 2.5rem; }
.skills h3 { font: 500 0.75rem/1 var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); margin: 0 0 0.6rem; }
.skills p { margin: 0; }

.langs { display: flex; flex-wrap: wrap; gap: 0.5rem 2.5rem; }
.langs span { color: var(--muted); font-size: var(--step--1); font-family: var(--font-mono); margin-left: 0.4rem; }

footer { margin-top: 3rem; border-top: 1px solid var(--line); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 0.75rem 2rem; justify-content: space-between; align-items: center; padding-block: 1.75rem 2.5rem; font: 400 var(--step--1)/1.5 var(--font-mono); color: var(--muted); }
footer .links { margin: 0; }

@media (max-width: 40rem) {
  .bar .mark { display: none; }
  .bar nav { margin-left: 0; }
  .hero { grid-template-columns: 1fr; gap: 1.25rem; padding-block: 2rem 1.75rem; }
  .hero img { width: 8rem; }
  .lede { grid-template-columns: 1fr; gap: 1.5rem; }
  figure.fade { max-width: 20rem; }
  .entry { grid-template-columns: 1fr; gap: 0.25rem; }
  .skills { grid-template-columns: 1fr; }
  .pubs li { grid-template-columns: minmax(0, 1fr) auto; }
  .pubs .yr { grid-column: 1 / -1; }
}