/* =====================================================================
   Neural Voxel Dynamics — project page styles
   A clean, academic, easy-to-read layout.
   ===================================================================== */

:root {
  --bg:        #ffffff;
  --bg-soft:   #f6f7f9;
  --bg-soft-2: #eef1f5;
  --text:      #1a1d24;
  --text-soft: #5a6472;
  --line:      #e2e6ec;
  --accent:    #e8590c;   /* primary accent (orange) */
  --accent-2:  #f59e0b;   /* secondary accent (amber, for gradients) */
  --ours:      #fff3e9;   /* highlighted "Ours" rows */
  --radius:    14px;
  --maxw:      1080px;
  --shadow:    0 1px 2px rgba(16,24,40,.06), 0 8px 24px rgba(16,24,40,.06);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:        #0e1116;
    --bg-soft:   #161a21;
    --bg-soft-2: #1c222b;
    --text:      #e9edf3;
    --text-soft: #9aa6b6;
    --line:      #262d38;
    --accent:    #fb923c;   /* brighter orange for dark bg */
    --accent-2:  #fbbf24;
    --ours:      #2c1c0e;
    --shadow:    0 1px 2px rgba(0,0,0,.4), 0 8px 28px rgba(0,0,0,.35);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 130px; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: var(--mono); font-size: .9em; background: var(--bg-soft-2); padding: .1em .4em; border-radius: 6px; }

/* ===================== NAV ===================== */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem;
  padding: .75rem clamp(1rem, 4vw, 2rem);
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav__left { display: flex; align-items: center; gap: .9rem; min-width: 0; }
.nav__home {
  font-size: .82rem; font-weight: 600; color: var(--text-soft);
  padding: .3rem .7rem; border-radius: 999px; border: 1px solid var(--line);
  white-space: nowrap;
}
.nav__home:hover { color: var(--accent); border-color: var(--accent); text-decoration: none; }
.nav__brand { font-weight: 700; color: var(--text); letter-spacing: -.01em; white-space: nowrap; }
.nav__links { display: flex; gap: 1.25rem; list-style: none; margin: 0; padding: 0; }
.nav__links a { color: var(--text-soft); font-weight: 500; font-size: .94rem; }
.nav__links a:hover { color: var(--accent); text-decoration: none; }
.nav__toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 6px; }
.nav__toggle span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; }

/* ===================== HERO ===================== */
.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(2.5rem, 6vw, 4.5rem) clamp(1rem, 4vw, 2rem) 1.5rem;
  text-align: center;
}
.hero__venue {
  display: inline-block; margin: 0 0 1rem;
  font-weight: 600; font-size: .8rem; letter-spacing: .08em; text-transform: uppercase;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  padding: .35rem .8rem; border-radius: 999px;
}
.hero__title {
  font-size: clamp(1.7rem, 4.2vw, 2.8rem);
  line-height: 1.18; font-weight: 800; letter-spacing: -.02em;
  margin: 0 0 1.25rem;
  color: var(--accent);
}
.hero__authors { font-size: 1.05rem; margin: .25rem 0; }
.hero__authors a { color: var(--text); font-weight: 600; }
.hero__authors sup { color: var(--text-soft); font-weight: 500; }
.hero__affil { color: var(--text-soft); margin: .25rem 0 1.75rem; }

.hero__links { display: flex; flex-wrap: wrap; gap: .6rem; justify-content: center; margin-bottom: 2rem; }
.btn {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .6rem 1.15rem; border-radius: 999px;
  background: var(--text); color: var(--bg);
  font-weight: 600; font-size: .92rem;
  border: 1px solid var(--text);
  transition: transform .12s ease, opacity .12s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); opacity: .9; }

/* A button whose link is not ready yet: says "Coming soon" on hover, focus or click */
.btn--soon { position: relative; background: transparent; color: var(--text-soft); border-color: var(--line); cursor: default; }
.btn--soon:hover { transform: none; opacity: 1; }
.btn--soon::after {
  content: "Coming soon";
  position: absolute; left: 50%; top: calc(100% + 6px); transform: translateX(-50%);
  padding: .2rem .55rem; border-radius: 6px;
  background: var(--text); color: var(--bg);
  font-size: .72rem; font-weight: 600; white-space: nowrap;
  opacity: 0; pointer-events: none; transition: opacity .12s ease;
}
.btn--soon:hover::after, .btn--soon:focus-visible::after, .btn--soon.show::after { opacity: 1; }

.hero__tldr {
  max-width: 760px; margin: -.5rem auto 1.75rem;
  font-size: .96rem; color: var(--text-soft);
}
.hero__tldr b { color: var(--accent); }

/* Preview: two reveal-slider clips between the TL;DR and the teaser */
.preview { max-width: 760px; margin: 0 auto 2rem; }

/* ===================== PLACEHOLDER + MEDIA ===================== */
.teaser, .figure { margin: 0; }

.media-ph {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius);
  border: 1px dashed color-mix(in srgb, var(--accent) 40%, var(--line));
  background:
    repeating-linear-gradient(45deg,
      color-mix(in srgb, var(--accent) 5%, var(--bg-soft)) 0 12px,
      var(--bg-soft) 12px 24px);
  display: grid; place-items: center;
  color: var(--text-soft);
  overflow: hidden;
}
.media-ph__label {
  font-family: var(--mono); font-size: .82rem;
  background: var(--bg); padding: .35rem .7rem; border-radius: 8px;
  border: 1px solid var(--line); box-shadow: var(--shadow);
  text-align: center; max-width: 80%;
}
.media-ph__label b { color: var(--text); }

video.media, img.media {
  display: block; width: 100%; height: auto;
  border-radius: var(--radius); object-fit: contain; background: var(--bg-soft);
}

figcaption.cap {
  margin-top: .65rem; font-size: .9rem; color: var(--text-soft); text-align: center;
}
figcaption.cap b { color: var(--text); }

/* ===================== SECTIONS ===================== */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(2.5rem, 5vw, 4rem) clamp(1rem, 4vw, 2rem);
  border-top: 1px solid var(--line);
}
.section__title {
  font-size: clamp(1.4rem, 3vw, 1.9rem); font-weight: 800; letter-spacing: -.02em;
  margin: 0 0 1rem;
  color: var(--accent);
}
.section__lead { color: var(--text-soft); margin: 0 0 1.75rem; }
.body { margin: 0 0 1.15rem; color: var(--text); }
.body:last-child { margin-bottom: 0; }
.subhead { font-size: 1.25rem; font-weight: 700; margin: 2.5rem 0 .5rem; scroll-margin-top: 130px; color: var(--accent); }
.minihead {
  font-size: 1.02rem; font-weight: 700; margin: 1.9rem 0 .5rem; color: var(--text);
  padding-left: .65rem; border-left: 3px solid var(--accent);
}
.muted { color: var(--text-soft); }

/* Abstract */
.abstract {
  background: var(--bg-soft); border: 1px solid var(--line);
  border-radius: var(--radius); padding: clamp(1.25rem, 3vw, 2rem);
  margin-bottom: 1.75rem;
}
.abstract__label {
  margin: 0 0 .75rem; font-size: .8rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--accent);
}
.abstract p { margin: 0 0 1rem; }
.abstract p:last-child { margin-bottom: 0; }

/* TL;DR cards */
.tldr { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.tldr__card {
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.25rem; box-shadow: var(--shadow);
}
.tldr__card h4 { margin: 0 0 .5rem; font-size: 1rem; }
.tldr__card p { margin: 0; color: var(--text-soft); font-size: .94rem; }

/* ===================== CONTRIBUTIONS ===================== */
.contrib { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.contrib__card {
  position: relative;
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.4rem 1.25rem 1.25rem;
}
.contrib__num {
  display: inline-grid; place-items: center;
  width: 30px; height: 30px; border-radius: 9px; margin-bottom: .7rem;
  font-weight: 800; font-size: .95rem; color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}
.contrib__card h4 { margin: 0 0 .4rem; font-size: 1.02rem; }
.contrib__card p { margin: 0; color: var(--text-soft); font-size: .93rem; }

/* Method figure + steps */
.figure { margin: 0 0 2rem; }
.steps { display: grid; gap: 1rem; }
.steps__item {
  display: flex; gap: 1rem; align-items: flex-start;
  background: var(--bg-soft); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.1rem 1.25rem;
}
.steps__num {
  flex: none; width: 34px; height: 34px; border-radius: 50%;
  display: grid; place-items: center; font-weight: 700;
  color: #fff; background: linear-gradient(135deg, var(--accent), var(--accent-2));
}
.steps__item h4 { margin: .1rem 0 .35rem; }
.steps__item p { margin: 0; color: var(--text-soft); font-size: .95rem; }

/* ===================== EXPERIMENTS SUB-NAV ===================== */
.subnav {
  position: sticky; top: 55px; z-index: 40;
  margin: 0 0 2rem;
  padding: .5rem 0;
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.subnav__scroll {
  display: flex; gap: .45rem; overflow-x: auto;
  scrollbar-width: none;
}
.subnav__scroll::-webkit-scrollbar { display: none; }
.subnav a {
  flex: none;
  font-size: .84rem; font-weight: 600; color: var(--text-soft);
  padding: .4rem .85rem; border-radius: 999px;
  border: 1px solid var(--line); background: var(--bg);
  white-space: nowrap;
}
.subnav a:hover { color: var(--accent); border-color: var(--accent); text-decoration: none; }
.subnav a.active { color: #111; background: var(--accent); border-color: var(--accent); }

/* ===================== TABLE ===================== */
.table-wrap { margin: 0 0 1rem; }
.table-cap { font-size: .92rem; color: var(--text-soft); margin-bottom: .75rem; }
.table-cap strong { color: var(--text); }
.table-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
.results-table { border-collapse: collapse; width: 100%; min-width: 680px; font-size: .9rem; }
.flow-table { min-width: 620px; }
.results-table th, .results-table td {
  padding: .55rem .7rem; text-align: center; border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
.results-table thead th {
  background: var(--bg-soft-2); font-weight: 700; color: var(--text);
  border-bottom: 1px solid var(--line);
}
.results-table .ta-l { text-align: left; }
.results-table .grp { font-weight: 700; vertical-align: middle; background: var(--bg-soft); }
.results-table tbody tr:hover { background: color-mix(in srgb, var(--accent) 5%, transparent); }
.results-table tr.ours { background: var(--ours); }
.results-table tr.ours td { font-weight: 500; }
.results-table b { color: var(--accent); }
.results-table u { text-decoration: underline; text-underline-offset: 2px; }
.table-legend { font-size: .85rem; color: var(--text-soft); margin: 0 0 1.25rem; }
.table-legend b { color: var(--accent); }
.table-legend u { text-underline-offset: 2px; }
.table-note { font-size: .9rem; color: var(--text-soft); margin-top: .75rem; display: flex; gap: .5rem; align-items: baseline; }
.swatch { display: inline-block; width: 14px; height: 14px; border-radius: 4px; background: var(--ours); border: 1px solid var(--accent); flex: none; }

/* Two-up table row */
.table-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; align-items: start; }

/* ===================== TABBED TABLES ===================== */
.tabs { margin: 0 0 1.25rem; }
.tabs__bar {
  display: flex; flex-wrap: wrap; gap: .4rem;
  margin-bottom: 1rem;
  padding-bottom: .1rem;
}
.tabs__btn {
  font-family: var(--font);
  font-size: .84rem; font-weight: 600; color: var(--text-soft);
  padding: .42rem .85rem; border-radius: 999px;
  border: 1px solid var(--line); background: var(--bg);
  cursor: pointer; white-space: nowrap;
  transition: color .12s ease, border-color .12s ease, background .12s ease;
}
.tabs__btn:hover { color: var(--accent); border-color: var(--accent); }
.tabs__btn.active { color: #111; background: var(--accent); border-color: var(--accent); }
.tabs__panel { display: none; }
.tabs__panel.active { display: block; animation: tabfade .18s ease; }
@keyframes tabfade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

/* ===================== GALLERY ===================== */
.gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}
.gallery--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.gallery--3 > .card { margin: 0; min-width: 0; }
.gallery--3 .card__media > .media-ph { height: 100%; aspect-ratio: 1; }
.gallery--1 { grid-template-columns: minmax(0, 1fr); }
.gallery--1 > .card { margin: 0; min-width: 0; }
.gallery--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; }
.gallery--4 > .card { margin: 0; min-width: 0; }
.gallery--4 .card__media > .media-ph { height: 100%; aspect-ratio: 1; }
.gallery--4 .card__body { padding: .7rem .8rem .85rem; }
.gallery--4 .card__title { font-size: .92rem; }
.gallery--4 .card__desc { font-size: .84rem; }
.gallery--paired { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.gallery--paired > .card { margin: 0; min-width: 0; }
.gallery--paired .media-ph { height: 100%; aspect-ratio: 1; }
.gallery--paired .compare .media-ph__label { display: none; }
.gallery--preview { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.gallery--preview > .card { margin: 0; min-width: 0; }
.gallery--preview .card__body { padding: .5rem .75rem .6rem; }
.gallery--preview .card__title { margin: 0; font-size: .9rem; }
.card {
  display: flex;
  flex-direction: column;
  background: var(--bg); border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
}
.card__media {
  position: relative;
  flex: 0 0 auto;
  aspect-ratio: var(--media-aspect, 1 / 1);
  background: var(--bg-soft);
  overflow: hidden;
}
.card__media > .media {
  height: 100%;
}
.card__media > .media-ph {
  height: 100%;
  aspect-ratio: auto;
}
.compare {
  --split: 50%;
  position: relative;
  width: 100%;
  aspect-ratio: var(--media-aspect, 1 / 1);
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--bg-soft);
  cursor: ew-resize;
  touch-action: pan-y;
}
.compare:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 60%, transparent);
  outline-offset: 3px;
}
.compare__layer {
  position: absolute;
  inset: 0;
}
.compare__layer .media {
  height: 100%;
  object-fit: contain;
  border-radius: 0;
}
.compare__layer--top {
  z-index: 1;
  clip-path: inset(0 0 0 var(--split));
}
.compare__handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--split);
  z-index: 3;
  width: 2px;
  transform: translateX(-1px);
  background: rgba(255,255,255,.9);
  box-shadow: 0 0 0 1px rgba(0,0,0,.28), 0 0 18px rgba(0,0,0,.25);
  pointer-events: none;
}
.compare__knob {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 34px;
  height: 34px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,.95);
  background:
    linear-gradient(135deg, transparent 45%, rgba(255,255,255,.95) 45% 55%, transparent 55%),
    rgba(16,24,40,.56);
  box-shadow: 0 3px 12px rgba(0,0,0,.28);
  backdrop-filter: blur(6px);
}
/* both labels share one bottom row, so a long label can use the room a short one
   leaves; if they still don't fit side by side they stack rather than truncate */
.compare__labels {
  position: absolute;
  left: .55rem;
  right: .55rem;
  bottom: .55rem;
  z-index: 4;
  display: flex;
  flex-wrap: wrap;
  gap: .3rem .4rem;
  pointer-events: none;
}
.compare__label {
  min-width: 0;
  padding: .2rem .48rem;
  border-radius: 999px;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .02em;
  color: #fff;
  background: rgba(16,24,40,.66);
  backdrop-filter: blur(4px);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.compare__label--right { margin-left: auto; }   /* stays right when the left label is hidden */
.compare--single { cursor: default; }
.compare--single .compare__layer--top { clip-path: none; }
.compare--single .compare__layer--bottom,
.compare--single .compare__handle,
.compare--single .compare__label--left {
  display: none;
}
/* ---- Method switch: one clip per method, picked with buttons under it ---- */
.mswitch { position: relative; width: 100%; height: 100%; background: var(--bg-soft); }
.mswitch .mswitch__clip {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: contain; border-radius: 0;
}
.mswitch .mswitch__clip[hidden] { display: none; }
.mswitch > .media-ph { height: 100%; aspect-ratio: auto; border-radius: 0; }
.mswitch__bar { display: flex; flex-wrap: wrap; gap: .35rem; padding: .65rem 1rem 0; }
.mswitch__btn {
  font-family: var(--font);
  font-size: .74rem; font-weight: 600; color: var(--text-soft);
  padding: .28rem .65rem; border-radius: 999px;
  border: 1px solid var(--line); background: var(--bg);
  cursor: pointer; white-space: nowrap;
  transition: color .12s ease, border-color .12s ease, background .12s ease;
}
.mswitch__btn:hover:not(:disabled):not(.active) { color: var(--accent); border-color: var(--accent); }
.mswitch__btn.active { color: #111; background: var(--accent); border-color: var(--accent); }
.mswitch__btn:disabled { opacity: .45; border-style: dashed; cursor: not-allowed; }
.gallery--preview .mswitch__bar { justify-content: center; padding: .55rem .6rem 0; }

/* ---- Frame strip: a short clip shown as evenly sampled stills ---- */
.filmstrip {
  position: relative;
  display: grid;
  grid-template-columns: repeat(var(--cols, 2), minmax(0, 1fr));
  grid-auto-rows: 1fr;
  gap: 5px;
  padding: 5px;
  width: 100%;
  height: 100%;
  background: var(--bg-soft);
}
.filmstrip__cell {
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  background: var(--bg-soft-2);
}
.filmstrip__cell--empty {
  border: 1px dashed color-mix(in srgb, var(--accent) 40%, var(--line));
  background:
    repeating-linear-gradient(45deg,
      color-mix(in srgb, var(--accent) 5%, var(--bg-soft)) 0 10px,
      var(--bg-soft) 10px 20px);
}
.filmstrip__frame {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.filmstrip__idx {
  position: absolute;
  right: .28rem; bottom: .28rem; z-index: 2;
  font-family: var(--mono); font-size: .62rem; line-height: 1;
  padding: .18rem .32rem; border-radius: 6px;
  color: #fff; background: rgba(16,24,40,.6);
  pointer-events: none;
}
.filmstrip__probe {
  position: absolute; left: 0; top: 0;
  width: 1px; height: 1px; opacity: 0; pointer-events: none;
}
.filmstrip--fallback { display: block; padding: 0; gap: 0; }
.filmstrip--fallback > .media { height: 100%; border-radius: 0; }

/* ---- Tile grid: several clips in one card, played together ---- */
.tilegrid {
  display: grid;
  grid-template-columns: repeat(var(--cols, 2), minmax(0, 1fr));
  grid-auto-rows: 1fr;
  gap: 5px;
  padding: 5px;
  width: 100%;
  height: 100%;
  background: var(--bg-soft);
  cursor: pointer;
}
.tilegrid__cell {
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  background: var(--bg-soft-2);
}
.tilegrid__cell--empty {
  border: 1px dashed color-mix(in srgb, var(--accent) 40%, var(--line));
  background:
    repeating-linear-gradient(45deg,
      color-mix(in srgb, var(--accent) 5%, var(--bg-soft)) 0 10px,
      var(--bg-soft) 10px 20px);
}
.tilegrid__media {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 0;
}
.tilegrid__cell--compare .compare {
  aspect-ratio: 1 / 1;
  border-radius: 0;
}
.tilegrid__cell .compare__labels { left: .3rem; right: .3rem; bottom: .3rem; }
.tilegrid__cell .compare__label {
  font-size: .58rem;
  padding: .14rem .34rem;
}
.tilegrid__cell .compare__knob { width: 22px; height: 22px; border-width: 2px; }
.tilegrid__cell--compare .tilegrid__label {
  top: .3rem; right: .3rem; left: auto; bottom: auto; z-index: 5;
}
.tilegrid__label {
  position: absolute;
  left: .3rem; bottom: .3rem; z-index: 2;
  font-family: var(--mono); font-size: .62rem; line-height: 1;
  padding: .18rem .34rem; border-radius: 6px;
  color: #fff; background: rgba(16,24,40,.6);
  pointer-events: none;
}

.card__badge {
  position: absolute; top: .6rem; left: .6rem; z-index: 2;
  font-size: .72rem; font-weight: 600; letter-spacing: .02em;
  background: color-mix(in srgb, var(--text) 82%, transparent); color: var(--bg);
  padding: .22rem .55rem; border-radius: 999px; backdrop-filter: blur(4px);
}
.card__body { flex: 1 1 auto; padding: .85rem 1rem 1rem; }
.card__title { margin: 0 0 .25rem; font-size: 1rem; font-weight: 700; }
.card__desc { margin: 0; font-size: .9rem; color: var(--text-soft); }

/* ===================== CONCLUSION ===================== */
.conclusion { font-size: 1rem; }
.conclusion p { margin: 0 0 1rem; }
.limits { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 1.5rem; }
.limits__card {
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.15rem 1.25rem;
}
.limits__card h4 { margin: 0 0 .5rem; font-size: 1rem; }
.limits__card p { margin: 0; color: var(--text-soft); font-size: .93rem; }
.limits__card ul { margin: 0; padding-left: 1.1rem; color: var(--text-soft); font-size: .93rem; }
.limits__card li { margin: 0 0 .35rem; }

/* ===================== BIBTEX ===================== */
.bibtex { position: relative; }
.bibtex pre {
  background: var(--bg-soft); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.25rem; overflow-x: auto; margin: 0;
}
.bibtex code { background: none; padding: 0; font-size: .88rem; color: var(--text); line-height: 1.6; }
.bibtex__copy {
  position: absolute; top: .75rem; right: .75rem;
  border: 1px solid var(--line); background: var(--bg); color: var(--text);
  border-radius: 8px; padding: .35rem .7rem; cursor: pointer; font-size: .82rem; font-weight: 600;
}
.bibtex__copy:hover { border-color: var(--accent); color: var(--accent); }

/* ===================== FOOTER ===================== */
.footer {
  border-top: 1px solid var(--line);
  text-align: center; color: var(--text-soft);
  padding: 2rem 1rem; font-size: .9rem;
}

/* ===================== RESPONSIVE ===================== */
@media (max-width: 980px) {
  .gallery--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  .nav__links {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--line);
    max-height: 0; overflow: hidden; transition: max-height .25s ease;
  }
  .nav__links.open { max-height: 320px; }
  .nav__links li { padding: 0 clamp(1rem, 4vw, 2rem); }
  .nav__links a { display: block; padding: .8rem 0; border-bottom: 1px solid var(--line); }
  .nav__toggle { display: flex; }
  .tldr, .contrib { grid-template-columns: 1fr; }
  .gallery, .gallery--3, .gallery--4, .gallery--paired, .table-grid, .limits { grid-template-columns: 1fr; }
  .gallery--1 { grid-template-columns: 1fr; }
  .gallery--preview { grid-template-columns: repeat(2, minmax(0, 1fr)); }   /* two-up until phone width */
  .subnav { top: 54px; }
}

@media (max-width: 560px) {   /* below this, two-up tiles are too narrow for both labels */
  .gallery--preview { grid-template-columns: 1fr; }
}