[hidden] { display: none !important; }
/* Self-hosted fonts (SIL OFL 1.1, licenses in fonts/), latin + greek subsets. */
@font-face { font-family: "Literata"; src: url(fonts/literata-latin-opsz-normal.woff2) format("woff2"); font-weight: 200 900; font-style: normal; font-display: swap; unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD; }
@font-face { font-family: "Literata"; src: url(fonts/literata-latin-opsz-italic.woff2) format("woff2"); font-weight: 200 900; font-style: italic; font-display: swap; unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD; }
@font-face { font-family: "Public Sans"; src: url(fonts/public-sans-latin-400-normal.woff2) format("woff2"); font-weight: 400; font-style: normal; font-display: swap; unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD; }
@font-face { font-family: "Public Sans"; src: url(fonts/public-sans-latin-500-normal.woff2) format("woff2"); font-weight: 500; font-style: normal; font-display: swap; unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD; }
@font-face { font-family: "Public Sans"; src: url(fonts/public-sans-latin-600-normal.woff2) format("woff2"); font-weight: 600; font-style: normal; font-display: swap; unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD; }
@font-face { font-family: "JetBrains Mono"; src: url(fonts/jetbrains-mono-latin-400-normal.woff2) format("woff2"); font-weight: 400; font-style: normal; font-display: swap; unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD; }
@font-face { font-family: "JetBrains Mono"; src: url(fonts/jetbrains-mono-latin-500-normal.woff2) format("woff2"); font-weight: 500; font-style: normal; font-display: swap; unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD; }
@font-face { font-family: "JetBrains Mono"; src: url(fonts/jetbrains-mono-greek-400-normal.woff2) format("woff2"); font-weight: 400; font-style: normal; font-display: swap; unicode-range: U+0370-0377,U+037A-037F,U+0384-038A,U+038C,U+038E-03A1,U+03A3-03FF; }
@font-face { font-family: "JetBrains Mono"; src: url(fonts/jetbrains-mono-greek-500-normal.woff2) format("woff2"); font-weight: 500; font-style: normal; font-display: swap; unicode-range: U+0370-0377,U+037A-037F,U+0384-038A,U+038C,U+038E-03A1,U+03A3-03FF; }
/* Layout: masthead, sticky toolbar, filter rail + card grid; detail in a dialog.
   Palette: cold lab-bench neutrals with a copper accent (coax, cavities, cryo plates). */
:root {
  --bg: #f4f6f8;
  --surface: #ffffff;
  --ink: #111c29;
  --muted: #566475;
  --line: #d9dfe6;
  --accent: #a2541f;
  --accent-ink: #ffffff;
  --accent-soft: #f6e7dc;
  --chip: #e8edf2;
  --metal: #aeb9c6;
  --bar: #8794a3;
  --edu: #1d6b74;
  --talk: #2f5d9e;
  --thumb-filter: none;
  --note: #5b4b9a;
  --out: #3f7a3a;
  --shadow: 0 1px 2px rgb(17 28 41 / .06), 0 8px 24px rgb(17 28 41 / .07);
  --f-display: "Literata", "Iowan Old Style", Georgia, serif;
  --f-body: "Public Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --radius: 10px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0c131c; --surface: #141e2a; --ink: #e4eaf1; --muted: #93a1b2; --line: #263343;
    --accent: #e08a52; --accent-ink: #1a0f07; --accent-soft: #3a2517; --chip: #1d2937; --bar: #5f7189; --metal: #6f8196;
    --edu: #5cc0c8; --talk: #84aef0; --note: #a99af0; --out: #86c77e; --thumb-filter: brightness(.9) contrast(.96);
    --shadow: 0 1px 2px rgb(0 0 0 / .4), 0 8px 24px rgb(0 0 0 / .3);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0c131c; --surface: #141e2a; --ink: #e4eaf1; --muted: #93a1b2; --line: #263343;
  --accent: #e08a52; --accent-ink: #1a0f07; --accent-soft: #3a2517; --chip: #1d2937; --bar: #5f7189; --metal: #6f8196;
  --edu: #5cc0c8; --talk: #84aef0; --note: #a99af0; --out: #86c77e; --thumb-filter: brightness(.9) contrast(.96);
  --shadow: 0 1px 2px rgb(0 0 0 / .4), 0 8px 24px rgb(0 0 0 / .3);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.6 var(--f-body);
}
a { color: var(--accent); }
button, input, select { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.wrap { max-width: 1200px; margin: 0 auto; padding-inline: 16px; }
@media (min-width: 700px) { .wrap { padding-inline: 28px; } }

/* top bar */
.topbar { border-bottom: 1px solid color-mix(in srgb, var(--line) 60%, transparent); }
.topbar-inner { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding-block: 12px; }
.me { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 600; font-size: 15px; min-width: 0; }
/* the mark: two levels and the copper arc of a jump caught mid-flight */
.mark { width: 32px; height: 32px; flex: none; }
.mark .mk-t { fill: var(--chip); }
.mark path { fill: none; stroke-linecap: round; }
.mark .mk-l { stroke: var(--ink); stroke-width: 4; }
.mark .mk-a { stroke: var(--accent); stroke-width: 5; }
.mark .mk-d { stroke: var(--bar); stroke-width: 2; stroke-dasharray: 1 4.5; }
.me:hover .mk-a { stroke-dashoffset: 0; animation: mk-fly .9s cubic-bezier(.4, 0, .2, 1); stroke-dasharray: 40; }
@keyframes mk-fly { from { stroke-dashoffset: 40; } }
@media (prefers-reduced-motion: reduce) { .me:hover .mk-a { animation: none; } }
.toplinks { display: flex; align-items: center; gap: 22px; font-size: 14px; }
.toplinks a { color: var(--muted); text-decoration: none; }
.toplinks a:hover { color: var(--ink); }
.theme-btn { display: inline-grid; place-items: center; width: 34px; height: 34px; border: 1px solid var(--line); border-radius: 50%; background: var(--surface); color: var(--ink); cursor: pointer; padding: 0; }
.theme-btn:hover { border-color: var(--accent); color: var(--accent); }
.theme-btn svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.theme-btn:empty { visibility: hidden; }
@media (max-width: 599px) {
  .toplinks { gap: 14px; }
  .toplinks a { display: none; }
  .me span:last-child { font-size: 14px; }
}

/* shared section rhythm: one idea per band, generous space, centred heads */
.narrow { max-width: 760px; text-align: center; }
.section-h { margin: 0; font: 650 clamp(32px, 5vw, 56px)/1.05 var(--f-display); letter-spacing: -.025em; text-wrap: balance; }
.section-sub { margin: 16px auto 0; max-width: 46ch; font-size: clamp(17px, 2vw, 21px); line-height: 1.45; color: var(--muted); text-wrap: pretty; }
.section-sub a { white-space: nowrap; }
.eyebrow { margin: 0 0 14px; font: 500 13px/1.4 var(--f-mono); letter-spacing: .04em; color: var(--accent); }
.js .reveal.pre { opacity: 0; transform: translateY(24px); transition: opacity .8s ease, transform .8s cubic-bezier(.2, .7, .2, 1); }
.js .reveal.pre.in { opacity: 1; transform: none; }

/* hero */
.hero { padding-block: clamp(56px, 10vw, 120px) clamp(24px, 4vw, 48px); }
.hero-inner { display: grid; justify-items: center; text-align: center; }
h1 { margin: 0; font: 650 clamp(46px, 9vw, 112px)/.98 var(--f-display); letter-spacing: -.035em; text-wrap: balance; }
h1 em { font-style: italic; font-weight: 500; color: var(--accent); }
.lede { margin: 24px 0 0; color: var(--muted); font-size: clamp(18px, 2.2vw, 23px); line-height: 1.45; max-width: 36ch; text-wrap: balance; }
.hero-cta { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 32px; }
.btn.pill { border-radius: 999px; padding: 11px 22px; font-size: 15px; }
.btn.primary:hover { filter: brightness(1.08); }
.transmon { margin: clamp(24px, 4vw, 40px) 0 0; width: 100%; max-width: 560px; }
.transmon svg { display: block; width: 100%; height: auto; overflow: visible; }
.transmon figcaption { margin-top: 8px; font-size: 13px; color: var(--muted); text-align: center; }
.transmon .sub.f-t { fill: var(--chip); }
.transmon .sub.f-l { fill: color-mix(in srgb, var(--chip) 80%, var(--ink)); }
.transmon .sub.f-r { fill: color-mix(in srgb, var(--chip) 65%, var(--ink)); }
.transmon .pad.f-t, .transmon .lead.f-t { fill: var(--metal); }
.transmon .pad.f-l, .transmon .lead.f-l { fill: color-mix(in srgb, var(--metal) 75%, var(--ink)); }
.transmon .pad.f-r, .transmon .lead.f-r { fill: color-mix(in srgb, var(--metal) 60%, var(--ink)); }
.transmon .jj { fill: var(--accent); }
.transmon .meander { fill: none; stroke: var(--metal); stroke-width: 2.4; stroke-linejoin: round; }
.transmon .field { fill: none; stroke: var(--accent); stroke-width: 1.4; stroke-dasharray: 3 5; stroke-linecap: round; }
.transmon .cp { fill: var(--edu); stroke: var(--surface); stroke-width: 1; }
.transmon .chg { font: 500 18px var(--f-mono); fill: var(--ink); text-anchor: middle; }
.mono { font-family: var(--f-mono); color: var(--ink); }

/* stats */
.stats { padding-block: clamp(24px, 5vw, 56px) clamp(56px, 9vw, 112px); }
.stat-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); max-width: 880px; margin: 0 auto; text-align: center; }
.stat-row > div { display: flex; flex-direction: column-reverse; gap: 6px; padding-inline: 8px; }
.stat-row > div + div { border-left: 1px solid var(--line); }
.stat-row dd { margin: 0; font: 600 clamp(36px, 6vw, 64px)/1 var(--f-display); letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
.stat-row dt { font-size: 14px; color: var(--muted); }
.fine { margin: 18px 0 0; text-align: center; font-size: 12.5px; color: var(--muted); }

/* quantum-jump band */
.jump { padding-block: clamp(72px, 11vw, 140px); background: var(--surface); border-block: 1px solid var(--line); }
.jump .narrow { margin-inline: auto; }
.trace { margin-top: clamp(36px, 6vw, 64px); margin-bottom: 0; }
.trace-plot { --h: clamp(84px, 12vw, 132px); position: relative; cursor: pointer; padding-block: 26px 4px; }
.trace svg { display: block; width: 100%; height: var(--h); overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 14%, #000 92%, transparent); mask-image: linear-gradient(90deg, transparent, #000 14%, #000 92%, transparent); }
.trace .lvl { stroke: var(--line); stroke-width: 1; stroke-dasharray: 3 5; vector-effect: non-scaling-stroke; }
.trace path { fill: none; stroke: var(--ink); stroke-width: 1.5; vector-effect: non-scaling-stroke; stroke-linejoin: round; opacity: .8; }
.trace .mark-path { stroke: var(--accent); stroke-width: 3; opacity: 1; stroke-linecap: round; }
.trace-label { position: absolute; top: 0; transform: translateX(-50%); font: 500 12px var(--f-mono); color: var(--accent); white-space: nowrap; pointer-events: none; }
.trace-label::after { content: " ↓"; }
.lvl-lab { position: absolute; left: 0; font: 500 11px var(--f-mono); color: var(--muted); z-index: 1; }
.lvl-d { top: calc(26px + var(--h) * .233 - 20px); }
.lvl-g { top: calc(26px + var(--h) * .767 - 20px); }
.trace figcaption { margin-top: 14px; text-align: center; font-size: 13px; color: var(--muted); }

/* shelves */
.shelves { padding-block: clamp(72px, 11vw, 140px) clamp(40px, 6vw, 72px); }
.shelves .narrow { margin-inline: auto; }
.shelf-grid { display: grid; gap: 20px; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: clamp(36px, 5vw, 56px); }
@media (max-width: 859px) { .shelf-grid { grid-template-columns: 1fr; max-width: 520px; margin-inline: auto; } }
.shelf { position: relative; display: grid; gap: 8px; align-content: start; text-align: left; padding: 0 28px 28px; border: 1px solid var(--line); border-radius: 20px; background: var(--surface); cursor: pointer; transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; min-width: 0; overflow: hidden; }
.shelf:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.shelf[aria-pressed="true"] { border-color: var(--c); box-shadow: inset 0 0 0 1px var(--c); }
.shelf .s-kicker { font: 500 13px/1 var(--f-mono); color: var(--c); }
.shelf .s-name { display: block; font: 650 24px/1.15 var(--f-display); letter-spacing: -.01em; }
.shelf .s-blurb { display: block; font-size: 15px; color: var(--muted); }
.shelf .s-count { margin-top: 6px; font-size: 14px; color: var(--muted); }
.shelf .s-count b { font: 600 15px var(--f-body); color: var(--ink); font-variant-numeric: tabular-nums; }

/* fanned thumbnail stacks (shelf tiles and start-here paths) */
.s-fan, .path-fan { position: relative; display: block; height: 150px; margin: 0 -28px 18px; background: linear-gradient(180deg, color-mix(in srgb, var(--c, var(--accent)) 14%, var(--surface)), var(--surface)); overflow: hidden; }
.s-fan img, .path-fan img { position: absolute; left: 50%; bottom: -26px; width: 62%; aspect-ratio: 16 / 9; object-fit: cover; object-position: top; border-radius: 6px; border: 1px solid var(--line); box-shadow: var(--shadow); background: var(--chip); filter: var(--thumb-filter); transition: transform .35s cubic-bezier(.2, .7, .2, 1); }
.s-fan img:nth-last-child(1), .path-fan img:nth-last-child(1) { transform: translateX(-50%); z-index: 3; }
.s-fan img:nth-last-child(2), .path-fan img:nth-last-child(2) { transform: translateX(-74%) rotate(-7deg); z-index: 2; }
.s-fan img:nth-last-child(3), .path-fan img:nth-last-child(3) { transform: translateX(-26%) rotate(7deg); z-index: 1; }
.shelf:hover .s-fan img:nth-last-child(1), .path-fan:hover img:nth-last-child(1) { transform: translateX(-50%) translateY(-8px); }
.shelf:hover .s-fan img:nth-last-child(2), .path-fan:hover img:nth-last-child(2) { transform: translateX(-84%) rotate(-10deg); }
.shelf:hover .s-fan img:nth-last-child(3), .path-fan:hover img:nth-last-child(3) { transform: translateX(-16%) rotate(10deg); }
.linkish { border: 0; background: none; padding: 0; color: var(--accent); text-decoration: underline; cursor: pointer; font: inherit; }
.s-lectures { --c: var(--edu); } .s-research { --c: var(--talk); } .s-notes { --c: var(--note); } .s-outreach { --c: var(--out); }

/* start here: collapsed by default */
.start { margin-top: clamp(32px, 5vw, 48px); }
.start > summary { list-style: none; display: flex; align-items: center; justify-content: center; gap: 12px; width: max-content; max-width: 100%; margin: 0 auto; padding: 12px 22px; border: 1px solid var(--line); border-radius: 999px; background: var(--surface); cursor: pointer; font-weight: 500; }
.start > summary::-webkit-details-marker { display: none; }
.start > summary:hover { border-color: var(--accent); }
.start-ket { font: 500 13px var(--f-mono); color: var(--accent); }
.chev { width: 8px; height: 8px; border-right: 1.6px solid currentColor; border-bottom: 1.6px solid currentColor; transform: rotate(45deg) translateY(-2px); transition: transform .2s; }
.start[open] .chev { transform: rotate(-135deg) translate(-2px, 0); }
.paths { list-style: none; margin: 32px 0 0; padding: 0; display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); }
.path { border: 1px solid var(--line); border-radius: 20px; padding: 0 24px 24px; background: var(--surface); min-width: 0; overflow: hidden; }
.path-fan { margin: 0 -24px 18px; height: 140px; }
.path-ket { margin: 0; font: 500 12px var(--f-mono); color: var(--accent); }
.path h3 { margin: 6px 0 12px; font: 650 20px/1.2 var(--f-display); }
.path ol { margin: 0; padding-left: 20px; display: grid; gap: 6px; font-size: 14.5px; }
.path ol a { color: var(--ink); text-decoration: none; }
.path ol a:hover { color: var(--accent); text-decoration: underline; }
.path ol span { color: var(--muted); font: 400 11.5px var(--f-mono); }

/* browse */
.browse { padding-top: clamp(40px, 6vw, 72px); }
.browse > .narrow { margin: 0 auto clamp(24px, 4vw, 40px); }
/* toolbar */
.toolbar { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 5; background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.toolbar-inner { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: center; padding-block: 12px; }
.search { flex: 1 1 260px; display: flex; align-items: center; gap: 8px; background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 0 12px; min-width: 0; }
.search svg { width: 16px; height: 16px; fill: none; stroke: var(--muted); stroke-width: 1.8; flex: none; }
.search input { border: 0; background: transparent; padding: 9px 0; width: 100%; outline: none; min-width: 0; }
.search:focus-within { border-color: var(--accent); box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 35%, transparent); }
.seg { display: flex; background: var(--chip); border-radius: 8px; padding: 3px; flex-wrap: wrap; }
.seg button { border: 0; background: transparent; padding: 6px 12px; border-radius: 6px; cursor: pointer; font-size: 14px; color: var(--muted); white-space: nowrap; }
.seg button[aria-pressed="true"] { background: var(--surface); color: var(--ink); box-shadow: var(--shadow); font-weight: 600; }
.sort, .toggle { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--muted); }
.sort select { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 7px 8px; color: var(--ink); }
.toggle input { accent-color: var(--accent); }

/* layout */
.layout { display: grid; gap: 40px; padding-block: 32px 96px; }
.filters-box > summary { cursor: pointer; font-weight: 600; padding: 8px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); width: max-content; }
.filters-box[open] > summary { margin-bottom: 16px; }
@media (min-width: 960px) {
  .layout { grid-template-columns: 230px minmax(0, 1fr); }
  .filters-box { position: sticky; top: 84px; align-self: start; max-height: calc(100vh - 100px); overflow: auto; }
  .filters-box > summary { display: none; }
}
@media (max-width: 699px) { .toolbar { position: static; } }
.filters { display: grid; gap: 22px; align-content: start; }
.filters h2 { margin: 0 0 10px; font: 500 11px/1 var(--f-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { border: 1px solid var(--line); background: var(--chip); color: var(--ink); border-radius: 999px; padding: 3px 10px; font-size: 13px; cursor: pointer; line-height: 1.5; }
.chip small { color: var(--muted); font: 400 11px var(--f-mono); margin-left: 4px; }
.chip[aria-pressed="true"] { background: var(--accent); color: var(--accent-ink); }
.chip[aria-pressed="true"] small { color: inherit; opacity: .8; }
.chips.static .chip { cursor: default; }
.reset, .empty button { justify-self: start; border: 1px solid var(--line); background: var(--surface); border-radius: 8px; padding: 6px 12px; cursor: pointer; font-size: 13px; }

/* year histogram */
.years { display: grid; grid-template-columns: repeat(var(--n), 1fr); gap: 2px; align-items: end; height: 64px; }
.years button { border: 0; padding: 0; background: transparent; cursor: pointer; height: 100%; position: relative; }
.years button::before { content: ""; position: absolute; inset: auto 0 0 0; height: var(--h); min-height: 3px; background: var(--bar); border-radius: 2px 2px 0 0; }
.years button:disabled { cursor: default; }
.years button:disabled::before { opacity: .45; }
.years button[aria-pressed="true"]::before { background: var(--accent); }
.years button:not(:disabled):hover::before { background: color-mix(in srgb, var(--accent) 55%, var(--bar)); }
.years-undated { margin-top: 8px; }
.years-axis { display: flex; justify-content: space-between; font: 400 11px var(--f-mono); color: var(--muted); margin-top: 4px; }

/* results */
.count { margin: 0 0 14px; color: var(--muted); font-size: 14px; }
.count b { color: var(--ink); font-variant-numeric: tabular-nums; }
.group-h { margin: 28px 0 12px; font: 650 19px/1.3 var(--f-display); display: flex; gap: 10px; align-items: baseline; flex-wrap: wrap; }
.group-h:first-child { margin-top: 0; }
.group-h .yrs { font: 400 12px var(--f-mono); color: var(--muted); }
.group-h small { font: 400 12px var(--f-mono); color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 250px), 1fr)); gap: 28px 24px; }
.card { position: relative; display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; cursor: pointer; text-align: left; padding: 0; transition: transform .15s ease, box-shadow .15s ease; min-width: 0; }
.card-link { color: inherit; text-decoration: none; }
.card-link::after { content: ""; position: absolute; inset: 0; }
.card-link:focus-visible { outline: none; }
.card:has(.card-link:focus-visible) { outline: 2px solid var(--accent); outline-offset: 2px; }
.card { transition: transform .25s ease, box-shadow .25s ease; }
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.thumb img, .ip-thumb img, .d-media img, .ip-row-thumb img { filter: var(--thumb-filter); }
.card:hover .thumb img { filter: none; }
.thumb { aspect-ratio: 16 / 9; background: var(--chip); overflow: hidden; border-bottom: 1px solid var(--line); max-width: 100%; }
.thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top; display: block; }
.card-body { display: grid; gap: 8px; padding: 16px 18px 18px; min-width: 0; }
.kind { display: flex; gap: 8px; align-items: center; font: 500 11px/1 var(--f-mono); letter-spacing: .02em; color: var(--muted); flex-wrap: wrap; }
.kind .type { text-transform: uppercase; letter-spacing: .06em; }
.member-n { font: 500 11px var(--f-mono); color: var(--muted); border: 1px solid var(--line); border-radius: 4px; padding: 1px 4px; }
.kind .dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.kind .type { display: inline-flex; gap: 6px; align-items: center; }
.k-lectures { color: var(--edu); } .k-research { color: var(--talk); } .k-notes { color: var(--note); } .k-outreach { color: var(--out); }
.card h3 { margin: 0; font: 650 16px/1.3 var(--f-display); text-wrap: balance; overflow-wrap: anywhere; }
.venue { margin: 0; font-size: 13px; color: var(--muted); }
.desc { margin: 0; font-size: 13.5px; color: var(--ink); opacity: .86; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.empty { color: var(--muted); }
mark { background: var(--accent-soft); color: inherit; border-radius: 2px; }

/* detail dialog */
dialog { border: 0; padding: 0; background: transparent; max-width: min(980px, calc(100vw - 24px)); width: 100%; max-height: calc(100vh - 24px); color: var(--ink); }
dialog::backdrop { background: rgb(8 12 18 / .55); }
.detail { position: relative; background: var(--surface); border-radius: 14px; overflow: auto; max-height: calc(100vh - 24px); display: grid; grid-template-columns: minmax(0, 1fr); }
.detail:focus-visible, #d-title:focus { outline: none; }
@media (min-width: 820px) { .detail { grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); } }
.d-media { background: var(--chip); padding: 20px; display: flex; align-items: flex-start; justify-content: center; }
.d-media img { border-radius: 6px; box-shadow: var(--shadow); max-height: 70vh; max-width: 100%; width: auto; height: auto; }
.d-body { padding: 24px 24px 28px; display: grid; gap: 12px; align-content: start; min-width: 0; }
.d-meta { margin: 0; padding-right: 36px; font: 500 12px/1.5 var(--f-mono); color: var(--muted); letter-spacing: .03em; }
#d-title { margin: 0; font: 650 24px/1.2 var(--f-display); text-wrap: balance; padding-right: 28px; }
.d-series { margin: 0; color: var(--muted); font-size: 14px; }
.d-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 14px; border-radius: 8px; border: 1px solid var(--line); background: var(--surface); color: var(--ink); text-decoration: none; font-size: 14px; font-weight: 500; cursor: pointer; }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn.quiet { border-color: transparent; color: var(--muted); }
.btn:disabled { opacity: .5; cursor: default; }
.btn.ghost:not(:disabled):hover { border-color: var(--accent); color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.d-summary { margin: 0; }
.d-points { margin: 0; padding-left: 18px; display: grid; gap: 4px; font-size: 14px; color: var(--muted); }
.d-related h3 { margin: 8px 0 8px; font: 500 11px/1 var(--f-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.d-related ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.d-related button { border: 0; background: none; padding: 0; color: var(--accent); cursor: pointer; text-align: left; font-size: 14px; }
.close { position: absolute; top: 10px; right: 12px; z-index: 1; border: 0; background: var(--surface); color: var(--ink); width: 34px; height: 34px; border-radius: 50%; font-size: 22px; line-height: 1; cursor: pointer; box-shadow: var(--shadow); }

.foot { border-top: 1px solid var(--line); background: var(--surface); color: var(--muted); font-size: 14px; }
.foot-inner { display: grid; gap: 32px 48px; padding-block: 56px 32px; }
@media (min-width: 860px) { .foot-inner { grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr) minmax(0, 1fr); } }
.foot p { margin: 0; max-width: 68ch; }
.reuse, .foot-col { display: grid; gap: 10px; align-content: start; min-width: 0; }
.foot h2 { margin: 0 0 2px; font: 650 17px/1.2 var(--f-display); color: var(--ink); }
.reuse p { color: var(--ink); }
.foot-fine { display: grid; gap: 4px; padding-block: 20px 40px; border-top: 1px solid var(--line); font-size: 12.5px; }
.foot-fine p { margin: 0; }

/* citations */
.d-cite { display: grid; gap: 10px; }
.bib { margin: 0; padding: 12px 14px; background: var(--chip); border-radius: 8px; font: 400 12px/1.5 var(--f-mono); overflow-x: auto; white-space: pre-wrap; overflow-wrap: anywhere; color: var(--ink); }

/* per-item citation pages (items/<id>/) */
.ip { padding-block: 24px 56px; display: grid; gap: 10px; }
.ip-title { font-size: clamp(30px, 5vw, 48px); line-height: 1.08; text-wrap: balance; }
.ip-authors { margin: 0; font-size: 16px; }
.ip-grid { display: grid; gap: 28px; margin-top: 10px; }
@media (min-width: 900px) { .ip-grid { grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); } }
.ip-body { display: grid; gap: 14px; align-content: start; min-width: 0; }
.ip-h { margin: 14px 0 0; font: 500 11px/1 var(--f-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.ip-body > .btn { justify-self: start; }
.ip-perm p { margin: 0; color: var(--muted); }
.ip-thumb img { border-radius: 8px; border: 1px solid var(--line); box-shadow: var(--shadow); width: 100%; }
.draft { display: inline-block; margin-left: 6px; font: 500 10px/1.6 var(--f-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); border: 1px solid var(--line); border-radius: 4px; padding: 0 5px; vertical-align: 1px; }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }

/* series pages */
.ip-grid-single { grid-template-columns: minmax(0, 860px) !important; }
.ip-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 18px; }
.ip-list li { display: grid; grid-template-columns: 150px minmax(0, 1fr); column-gap: 18px; align-items: start; }
.ip-list li > :not(.ip-row-thumb) { grid-column: 2; display: block; }
.ip-row-thumb { grid-row: 1 / span 3; }
.ip-row-thumb img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; object-position: top; border-radius: 6px; border: 1px solid var(--line); display: block; }
@media (max-width: 599px) { .ip-list li { grid-template-columns: 96px minmax(0, 1fr); } }
.ip-list a { font: 650 17px/1.3 var(--f-display); color: var(--ink); text-decoration: none; }
.ip-list a:hover { color: var(--accent); }
.ip-row-meta { font: 400 12px/1.6 var(--f-mono); color: var(--muted); }
.ip-list li > span:last-child:not(.ip-row-meta) { color: var(--muted); font-size: 14px; }
.ip-note { margin: 0; color: var(--muted); font-size: 14px; }
.d-cite-note { margin: 0; font-size: 13px; color: var(--muted); }
.d-cite-note:empty { display: none; }

/* series stacks: one cover card per series, with paper-stack layers behind */
.cell { display: flex; flex-direction: column; min-width: 0; }
.cell > .card { flex: 1; }
.stack-cards { position: relative; isolation: isolate; flex: 1; display: flex; margin-right: 8px; }
.stack-cards > .card { flex: 1; position: relative; z-index: 0; }
.stack:not(.open) .stack-cards::before, .stack:not(.open) .stack-cards::after { content: ""; position: absolute; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.stack:not(.open) .stack-cards::before { inset: 4px -4px -4px 4px; z-index: -1; }
.stack:not(.open) .stack-cards::after { inset: 8px -8px -8px 8px; z-index: -2; opacity: .7; }
.stack-more { margin-top: 14px; }
.stack-more { display: grid; gap: 2px; text-align: left; margin-top: 8px; padding: 8px 12px; border: 1px dashed var(--line); border-radius: 8px; background: transparent; cursor: pointer; color: var(--ink); min-width: 0; }
.stack-more:hover { border-style: solid; border-color: var(--accent); }
.stack-name { font: 650 14px/1.3 var(--f-display); overflow-wrap: anywhere; }
.stack-count { font: 500 12px/1.4 var(--f-mono); color: var(--accent); }
.stack.open .stack-more { border-style: solid; border-color: var(--accent); background: var(--accent-soft); }
.stack.open .stack-cards { margin-right: 0; }
.member > .card { box-shadow: inset 0 3px 0 var(--accent-soft); }

/* skip link, who-am-I line, pause, draft note */
.skip { position: absolute; left: 16px; top: -48px; z-index: 20; background: var(--surface); color: var(--ink); padding: 8px 12px; border-radius: 8px; border: 1px solid var(--line); }
.skip:focus { top: 12px; }
.draft-note { margin: 0; font-size: 12.5px; color: var(--muted); border-left: 2px solid var(--line); padding-left: 10px; }

/* dialog: in-series list */
.d-related ol { margin: 0; padding-left: 20px; display: grid; gap: 4px; font-size: 14px; }
.d-related li > span { color: var(--muted); font-size: 12px; }
.d-series a { color: var(--accent); }

/* static (no-JS / crawler) list, replaced by the grid */
.static-list { columns: 2 320px; margin: 0; padding-left: 18px; font-size: 14px; }
.static-list li { margin-bottom: 4px; break-inside: avoid; }
.new-pill { font: 600 10.5px/1 var(--f-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--accent-ink); background: var(--accent); border-radius: 4px; padding: 3px 5px; }