/* Feature Puzzles — project page.
   Dark, because every render on it has a #2b2b2b background; editorial, because
   it is a paper page and not an app. */

:root {
  --bg:        #08090c;
  --bg-raise:  #0e1015;
  --bg-card:   #12141b;
  --bg-sunken: #060709;
  --line:      #22262f;
  --line-soft: #1a1d25;
  --fg:        #e9ecf2;
  --fg-dim:    #9aa3b5;
  --fg-faint:  #6a7285;
  --accent:    #6f9dff;
  --accent-hi: #93b6ff;
  --accent-soft: rgba(111, 157, 255, .13);
  --ok:        #45cfa6;
  --serif: "Newsreader", "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Roboto, Arial, sans-serif;
  --mono: "JetBrains Mono", "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  --r: 14px;
  --r-sm: 9px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html { scroll-behavior: smooth; scroll-padding-top: 74px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 400 16px/1.68 var(--sans);
  -webkit-font-smoothing: antialiased;
}
img, video { display: block; max-width: 100%; }
a { color: var(--accent); }

.wrap { width: min(1220px, calc(100% - 48px)); margin: 0 auto; }
.wrap.narrow { width: min(760px, calc(100% - 48px)); }

/* ── nav ────────────────────────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; padding: 13px max(24px, calc((100% - 1220px) / 2));
  background: rgba(8, 9, 12, .82);
  backdrop-filter: saturate(150%) blur(14px);
  border-bottom: 1px solid var(--line-soft);
}
.nav-brand {
  font: 500 15px/1 var(--serif); letter-spacing: .01em;
  color: var(--fg); text-decoration: none;
}
.nav-links { display: flex; gap: 22px; }
.nav-links a {
  font-size: 13px; color: var(--fg-dim); text-decoration: none; transition: color .15s;
}
.nav-links a:hover { color: var(--fg); }
@media (max-width: 620px) { .nav-links { gap: 14px; } .nav-links a { font-size: 12px; } }

/* ── hero ───────────────────────────────────────────────────────────────── */
.hero { padding: 68px 0 10px; text-align: center; }
.venue {
  margin: 0 0 20px; font-size: 11.5px; letter-spacing: .14em;
  text-transform: uppercase; color: var(--fg-faint);
}
.title {
  margin: 0; font: 500 clamp(44px, 7.2vw, 78px)/1.02 var(--serif);
  letter-spacing: -.022em;
}
.subtitle {
  /* a step up, still well under .title (clamp 44-78px) */
  margin: 16px auto 0; max-width: 800px;
  font: 400 clamp(21px, 2.9vw, 31px)/1.36 var(--serif);
  color: var(--fg-dim); font-style: italic;
}
.authors { margin: 26px 0 0; font-size: 14px; color: var(--fg-dim); }

.links { display: flex; justify-content: center; flex-wrap: wrap; gap: 9px; margin: 28px 0 0; }
.btn {
  display: inline-block; padding: 9px 20px; border-radius: 999px;
  font: 500 13px/1 var(--sans); text-decoration: none;
  color: var(--fg); background: var(--bg-card); border: 1px solid var(--line);
  transition: .15s;
}
.btn:hover { border-color: var(--accent); color: var(--accent-hi); background: var(--accent-soft); }
.btn[data-placeholder] { color: var(--fg-faint); }
.btn[data-placeholder]:hover { color: var(--fg-dim); border-color: var(--line); background: var(--bg-card); }
.btn[data-placeholder]::after { content: " ·  soon"; font-size: 11px; opacity: .7; }

/* ── teaser ─────────────────────────────────────────────────────────────── */
.teaser { margin: 54px 0 0; }
#teaser-cover {
  width: 100%; height: auto; border-radius: var(--r);
  border: 1px solid var(--line); background: var(--bg-card);
}
.teaser-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px;
}
@media (max-width: 760px) { .teaser-grid { grid-template-columns: 1fr; } }
.teaser-grid figure {
  position: relative; margin: 0; border-radius: var(--r-sm); overflow: hidden;
  background: var(--bg-sunken); border: 1px solid var(--line-soft);
}
.teaser-grid img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.teaser-grid figcaption {
  position: absolute; left: 11px; bottom: 11px;
  font: 500 11.5px/1 var(--sans); letter-spacing: .05em; text-transform: uppercase;
  color: #fff; padding: 5px 9px; border-radius: 999px;
  background: rgba(8, 9, 12, .62); backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, .13);
}
.teaser > figcaption {
  margin: 16px auto 0; max-width: min(1120px, 100%); text-align: center;
  font-size: 14px; line-height: 1.7; color: var(--fg-faint);
}
.teaser > figcaption b { color: var(--fg-dim); font-weight: 500; }

/* ── prose sections ─────────────────────────────────────────────────────── */
.prose { padding: 76px 0 20px; }
.section-title {
  margin: 0 0 22px; font: 500 13px/1 var(--sans);
  letter-spacing: .15em; text-transform: uppercase; color: var(--fg-faint);
}
.prose p { margin: 0 0 18px; font-family: var(--serif); font-size: 17.5px; line-height: 1.72; color: #d6dbe6; }

/* The abstract sits just inside the figure width. The measure is not a round
   number: it is tuned with tools/measure_abstract.py so the paragraph's last
   line lands flush with the right edge on its own, which keeps the word spacing
   identical on every line (justification would stretch it). Re-run that tool if
   the abstract text or the font changes. */
#abstract .wrap { width: min(1080px, calc(100% - 48px)); }
#abstract p {
  font-size: 18.5px; line-height: 1.86;
  text-align: left; hyphens: none;
}
.prose p b { color: var(--fg); font-weight: 600; }
.prose p em { color: var(--fg); font-style: italic; }

.cite {
  margin: 0; padding: 18px 20px; overflow-x: auto;
  font: 400 12.5px/1.72 var(--mono); color: var(--fg-dim);
  background: var(--bg-sunken); border: 1px solid var(--line); border-radius: var(--r-sm);
}

/* ── task section ───────────────────────────────────────────────────────── */
.task { padding: 80px 0 30px; }
.task.alt { background: linear-gradient(180deg, transparent, #0a0b0f 8%, #0a0b0f 92%, transparent); }

.task-head { display: flex; gap: 22px; align-items: baseline; margin-bottom: 30px; }
.task-num {
  flex: none; font: 500 13px/1 var(--mono); color: var(--accent);
  padding-top: 7px; letter-spacing: .06em;
}
.task-head h2 { margin: 0; font: 500 clamp(27px, 3.4vw, 37px)/1.14 var(--serif); letter-spacing: -.015em; }
.task-head .lead {
  margin: 11px 0 0; max-width: 780px; font-family: var(--serif);
  font-size: 17px; line-height: 1.6; color: var(--fg-dim);
}

/* ── stage: main render with the other views floating over it ───────────── */
.stage-shell {
  border: 1px solid var(--line); border-radius: var(--r); overflow: hidden;
  background: var(--bg-card);
  /* JS sets --stage-max-w from the render's aspect, so a 4:3 scene gets a
     narrower shell instead of a stage tall enough to swallow the page. */
  max-width: var(--stage-max-w, none); margin: 0 auto;
}
.stage-bar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 12px 16px; border-bottom: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(255,255,255,.022), transparent);
}
.stage-name { display: flex; align-items: baseline; gap: 10px; min-width: 0; }
.stage-name h3 {
  margin: 0; font: 500 15px/1.3 var(--serif); letter-spacing: -.005em;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.stage-name .fam {
  font: 400 11px/1 var(--sans); letter-spacing: .07em; text-transform: uppercase;
  color: var(--fg-faint); white-space: nowrap;
}
.stage-bar-right { display: flex; align-items: center; gap: 8px; flex: none; }

.seg {
  display: flex; gap: 3px; padding: 3px; flex: none;
  background: var(--bg-sunken); border: 1px solid var(--line); border-radius: var(--r-sm);
}
.seg button {
  padding: 5px 11px; font: 500 11.5px/1.35 var(--sans); font-family: inherit;
  color: var(--fg-dim); background: transparent; border: 0; border-radius: 6px;
  cursor: pointer; transition: .14s; white-space: nowrap;
}
.seg button:hover { color: var(--fg); }
.seg button.on { background: var(--accent); color: #fff; }

.stage {
  position: relative; width: 100%; aspect-ratio: 16 / 9;
  background: var(--bg-sunken); overflow: hidden;
}

.panel {
  position: absolute; overflow: hidden; background: var(--bg-sunken);
  transition: left .5s cubic-bezier(.4, 0, .2, 1), top .5s cubic-bezier(.4, 0, .2, 1),
              width .5s cubic-bezier(.4, 0, .2, 1), height .5s cubic-bezier(.4, 0, .2, 1),
              border-radius .5s cubic-bezier(.4, 0, .2, 1),
              border-color .18s, box-shadow .3s, transform .18s;
}
.panel video { width: 100%; height: 100%; }
.panel .cap {
  position: absolute; left: 10px; bottom: 9px; pointer-events: none;
  font: 500 10.5px/1 var(--sans); letter-spacing: .06em; text-transform: uppercase;
  color: #eef1f7; padding: 5px 9px; border-radius: 999px;
  background: rgba(6, 7, 9, .6); backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, .12);
}

/* main slot */
.panel.main {
  left: 0; top: 0; width: 100%; height: 100%; z-index: 1;
  border-radius: 0; border: 1px solid transparent; box-shadow: none;
}
.panel.main video { object-fit: contain; }
.panel.main .cap { left: 14px; bottom: 13px; }

/* floating slots — geometry comes from JS so it can animate on a swap */
.panel.inset {
  z-index: 3; cursor: pointer; border-radius: 10px;
  border: 1px solid rgba(232, 236, 245, .5);
  box-shadow: 0 14px 36px rgba(0, 0, 0, .6), 0 2px 8px rgba(0, 0, 0, .5);
}
.panel.inset video { object-fit: cover; opacity: .94; }
.panel.inset:hover { border-color: var(--accent-hi); transform: translateY(-2px); }
.panel.inset:hover video { opacity: 1; }
.panel.inset .cap { left: 7px; bottom: 6px; font-size: 9.5px; padding: 4px 7px; }
.panel.ref img { width: 100%; height: 100%; object-fit: cover; }
.panel.ref::after { content: "expand"; }

.panel.inset::after {
  content: "swap"; position: absolute; right: 7px; top: 7px; opacity: 0;
  font: 500 9px/1 var(--sans); letter-spacing: .09em; text-transform: uppercase;
  color: #0a0b0e; background: var(--accent-hi); padding: 4px 7px; border-radius: 999px;
  transition: opacity .18s;
}
.panel.inset:hover::after { opacity: 1; }

.stage-empty {
  position: absolute; inset: 0; display: grid; place-items: center;
  color: var(--fg-faint); font-size: 14px; text-align: center; padding: 30px;
}

/* ── transport ──────────────────────────────────────────────────────────── */
.transport {
  display: flex; align-items: center; gap: 14px;
  padding: 11px 16px; border-top: 1px solid var(--line-soft); background: var(--bg-card);
}
.play {
  flex: none; width: 32px; height: 32px; border-radius: 50%; cursor: pointer;
  display: grid; place-items: center; padding: 0;
  color: var(--fg); background: var(--bg-sunken); border: 1px solid var(--line);
  transition: .15s;
}
.play:hover { border-color: var(--accent); color: var(--accent-hi); }
.play svg { width: 13px; height: 13px; fill: currentColor; }
.scrub {
  -webkit-appearance: none; appearance: none; flex: 1; min-width: 60px;
  height: 3px; border-radius: 999px; outline: none; cursor: pointer;
  background: var(--line);
}
.scrub::-webkit-slider-thumb {
  -webkit-appearance: none; width: 13px; height: 13px; border-radius: 50%;
  background: var(--accent); border: 2px solid var(--bg-card); cursor: pointer;
}
.scrub::-moz-range-thumb {
  width: 13px; height: 13px; border-radius: 50%; border: 2px solid var(--bg-card);
  background: var(--accent); cursor: pointer;
}
.frame-read {
  flex: none; font: 400 11.5px/1 var(--mono); color: var(--fg-faint);
  font-variant-numeric: tabular-nums;
}

/* ── meta strip under the stage ─────────────────────────────────────────── */
.meta-strip {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  padding: 13px 16px; border-top: 1px solid var(--line-soft); background: var(--bg-raise);
}
.chips { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  font: 400 11.5px/1 var(--sans); color: var(--fg-dim);
  padding: 5px 10px; border-radius: 999px;
  background: var(--bg-sunken); border: 1px solid var(--line);
}
.chip b { color: var(--fg); font-weight: 500; font-variant-numeric: tabular-nums; }
.chip .swatch { width: 9px; height: 9px; border-radius: 2.5px; flex: none; }
.chips-label {
  font: 500 10px/1 var(--sans); letter-spacing: .1em; text-transform: uppercase;
  color: var(--fg-faint); flex: none;
}
/* ── gallery ────────────────────────────────────────────────────────────── */
.gallery-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap; margin: 34px 0 14px;
}
.tabs { display: flex; gap: 6px; flex-wrap: wrap; }
.tab {
  display: inline-flex; align-items: baseline; gap: 7px; cursor: pointer;
  padding: 7px 14px; border-radius: 999px; font: 500 12.5px/1 var(--sans);
  color: var(--fg-dim); background: var(--bg-card); border: 1px solid var(--line);
  transition: .15s; font-family: inherit;
}
.tab:hover:not(:disabled) { color: var(--fg); border-color: #333a49; }
.tab.on { background: var(--accent-soft); border-color: rgba(111,157,255,.45); color: var(--fg); }
.tab .n { font: 400 10.5px/1 var(--mono); color: var(--fg-faint); }
.tab.on .n { color: var(--accent-hi); }
.tab:disabled { opacity: .4; cursor: not-allowed; }

.filter {
  width: 200px; padding: 8px 12px; font: 400 12.5px/1 var(--sans);
  color: var(--fg); background: var(--bg-sunken);
  border: 1px solid var(--line); border-radius: 999px; outline: none;
}
.filter:focus { border-color: var(--accent); }
.filter::placeholder { color: var(--fg-faint); }

.group-note {
  margin: 0 0 18px; max-width: 760px;
  font-size: 13.5px; line-height: 1.6; color: var(--fg-faint);
}
.group-note .pending {
  color: var(--fg-dim); border-left: 2px solid var(--line); padding-left: 10px;
  margin-left: 4px; display: inline-block;
}

.grid {
  /* Six to a row, two rows to a page; the rest is a page turn away. */
  display: grid; gap: 12px; grid-template-columns: repeat(6, 1fr);
}
@media (max-width: 1040px) { .grid { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 720px)  { .grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 480px)  { .grid { grid-template-columns: repeat(2, 1fr); } }

.gallery-tools { display: flex; align-items: center; gap: 10px; }
.pager { display: flex; align-items: center; gap: 4px; }
.pager[hidden] { display: none; }
.pager .pg {
  width: 28px; height: 28px; padding: 0; cursor: pointer; font: 400 15px/1 var(--sans);
  color: var(--fg-dim); background: var(--bg-card);
  border: 1px solid var(--line); border-radius: 999px; transition: .15s;
}
.pager .pg:hover:not(:disabled) { color: var(--fg); border-color: #333a49; }
.pager .pg:disabled { opacity: .35; cursor: not-allowed; }
.pg-read {
  min-width: 42px; text-align: center;
  font: 400 11px/1 var(--mono); color: var(--fg-faint); font-variant-numeric: tabular-nums;
}
.card {
  position: relative; padding: 0; cursor: pointer; text-align: left;
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: 11px; overflow: hidden; font-family: inherit;
  transition: border-color .16s, transform .16s;
}
.card:hover { border-color: #39425a; transform: translateY(-2px); }
.card.on { border-color: var(--accent); }
.card.on::before {
  content: ""; position: absolute; inset: 0; z-index: 2; pointer-events: none;
  box-shadow: inset 0 0 0 1px var(--accent);
  border-radius: 11px;
}
.card img {
  /* Cards match the aspect of the renders in their own section, so a poster is
     shown whole rather than cropped. */
  width: 100%; aspect-ratio: var(--card-aspect, 4 / 3); object-fit: cover;
  background: var(--bg-sunken); transition: opacity .16s;
}
.card:hover img { opacity: .88; }
.card .cinfo { padding: 9px 11px 11px; }
.card .cname {
  font: 500 12.5px/1.35 var(--sans); color: var(--fg);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.card .cfam {
  margin-top: 2px; font: 400 10.5px/1.3 var(--sans);
  letter-spacing: .04em; color: var(--fg-faint);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.card .cbadge {
  position: absolute; right: 8px; top: 8px; z-index: 2;
  font: 500 10px/1 var(--mono); color: #e9ecf2; padding: 4px 7px; border-radius: 999px;
  background: rgba(6, 7, 9, .66); backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, .12);
}
.empty-note {
  padding: 40px 20px; text-align: center; color: var(--fg-faint);
  font-size: 13.5px; border: 1px dashed var(--line); border-radius: var(--r);
}

/* ── lightbox ───────────────────────────────────────────────────────────── */
.lightbox {
  position: fixed; inset: 0; z-index: 90; display: grid; place-items: center;
  padding: 40px; background: rgba(4, 5, 7, .9); backdrop-filter: blur(6px);
}
.lightbox figure { margin: 0; max-width: min(1000px, 100%); }
.lightbox img {
  width: 100%; border-radius: var(--r-sm); border: 1px solid var(--line);
}
.lightbox figcaption {
  margin-top: 12px; text-align: center; font-size: 13px; color: var(--fg-dim);
}
.lb-close {
  position: absolute; right: 22px; top: 18px; z-index: 2;
  width: 36px; height: 36px; border-radius: 50%; cursor: pointer;
  font-size: 22px; line-height: 1; color: var(--fg);
  background: var(--bg-card); border: 1px solid var(--line);
}
.lb-close:hover { border-color: var(--accent); color: var(--accent-hi); }

/* ── footer ─────────────────────────────────────────────────────────────── */
.foot { padding: 70px 0 60px; border-top: 1px solid var(--line-soft); margin-top: 70px; }
.foot p { margin: 0; font-size: 13px; color: var(--fg-faint); }
.foot .build { margin-top: 8px; font: 400 11px/1.6 var(--mono); color: #4d5466; }

@media (max-width: 760px) {
  .task-head { flex-direction: column; gap: 6px; }
  .task-num { padding-top: 0; }
  .stage-bar { flex-wrap: wrap; }
  .filter { width: 100%; }
}

/* ── dynamic scenes ─────────────────────────────────────────────────────── */
/* Every other scene on the page is a still room; the dynamic split carries its
   own colour everywhere it appears so it cannot be mistaken for one. */
:root { --dyn: #ff7a4d; --dyn-soft: rgba(255, 122, 77, .14); }

.tab.dyn { border-color: rgba(255, 122, 77, .45); color: var(--fg); }
.tab.dyn.on { background: var(--dyn-soft); border-color: var(--dyn); }
.tab.dyn.on .n { color: var(--dyn); }
.tab .dyn-dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--dyn);
  align-self: center; box-shadow: 0 0 0 3px rgba(255, 122, 77, .22);
  animation: dyn-pulse 1.8s ease-in-out infinite;
}
@keyframes dyn-pulse { 50% { box-shadow: 0 0 0 5px rgba(255, 122, 77, 0); } }
@media (prefers-reduced-motion: reduce) { .tab .dyn-dot { animation: none; } }

.card.dyn { border-color: rgba(255, 122, 77, .38); }
.card.dyn.on { border-color: var(--dyn); }
.card.dyn.on::before { box-shadow: inset 0 0 0 1px var(--dyn); }
.card .dyn-tag {
  position: absolute; left: 8px; top: 8px; z-index: 2;
  font: 600 9.5px/1 var(--sans); letter-spacing: .09em; text-transform: uppercase;
  color: #1a0d07; background: var(--dyn); padding: 4px 7px; border-radius: 999px;
}

.stage-shell.is-dynamic { border-color: rgba(255, 122, 77, .55); }
.dyn-flag {
  flex: none; align-self: center;
  font: 600 10px/1 var(--sans); letter-spacing: .09em; text-transform: uppercase;
  color: var(--dyn); background: var(--dyn-soft);
  border: 1px solid rgba(255, 122, 77, .45); padding: 4px 8px; border-radius: 999px;
}

/* ── authors ────────────────────────────────────────────────────────────── */
.authors {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 26px;
  margin: 28px auto 0; max-width: 980px; font-size: 16.5px; color: var(--fg);
}
.authors sup, .affils sup { font-size: .68em; margin-left: 1px; color: var(--accent-hi); }
.affils {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 4px 24px;
  margin: 10px auto 0; max-width: 980px; font-size: 13.5px; color: var(--fg-faint);
}
.affils sup { margin: 0 2px 0 0; }

/* ── abstract box ───────────────────────────────────────────────────────── */
.abstract-box {
  padding: 30px 34px 22px;
  border-left: 2px solid var(--accent); border-radius: 2px;
  background: linear-gradient(100deg, var(--accent-soft), rgba(111, 157, 255, 0) 72%);
}
#abstract .abstract-box p { margin-bottom: 0; }
.highlights { list-style: none; margin: 24px 0 0; padding: 0; }
.highlights li {
  display: flex; gap: 12px; margin: 0 0 13px;
  font-size: 15px; line-height: 1.65; color: var(--fg-dim);
}
.highlights li b { color: var(--fg); font-weight: 600; }
.highlights .tick {
  flex: none; width: 18px; height: 18px; margin-top: 3px; border-radius: 50%;
  background: var(--accent-soft); border: 1.5px solid var(--accent);
  position: relative;
}
.highlights .tick::after {
  content: ""; position: absolute; left: 5px; top: 2px; width: 4px; height: 8px;
  border: solid var(--accent-hi); border-width: 0 2px 2px 0; transform: rotate(45deg);
}
@media (max-width: 620px) { .abstract-box { padding: 22px 18px 14px; } }

/* ── video ──────────────────────────────────────────────────────────────── */
.promo {
  border: 1px solid var(--line); border-radius: var(--r); overflow: hidden;
  background: #000; box-shadow: 0 20px 60px rgba(0, 0, 0, .45);
}
.promo video { width: 100%; height: auto; aspect-ratio: 16 / 9; }
.promo-bar { display: flex; justify-content: flex-end; margin: 0 0 12px; }

/* ── method ─────────────────────────────────────────────────────────────── */
.method-part { margin: 0 0 58px; }
.method-part:last-child { margin-bottom: 10px; }
.method-head { display: flex; gap: 18px; align-items: flex-start; margin: 0 0 22px; }
.method-num {
  flex: none; width: 34px; height: 34px; border-radius: 50%;
  display: grid; place-items: center; margin-top: 2px;
  font: 500 14px/1 var(--mono); color: var(--accent-hi);
  background: var(--accent-soft); border: 1px solid rgba(111, 157, 255, .45);
}
.method-head h3 { margin: 0; font: 500 clamp(22px, 2.6vw, 28px)/1.2 var(--serif); letter-spacing: -.01em; }
.method-head p { margin: 8px 0 0; max-width: 900px; font-size: 16.5px; line-height: 1.65; color: var(--fg-dim); }

.fig-wrap { overflow-x: auto; scrollbar-width: thin; scrollbar-color: var(--line) transparent; }
.fig-method { display: block; width: 100%; min-width: 860px; height: auto; font-family: var(--serif); }
.fig-method .panel { fill: rgba(14, 16, 21, .9); stroke: var(--line); }
.fig-method .ptitle { fill: var(--accent-hi); font: 600 14px var(--sans); letter-spacing: .22em; }
.fig-method .lbl { fill: var(--fg); font-size: 19px; font-weight: 600; text-anchor: middle; }
.fig-method .sub { fill: var(--fg-faint); font: italic 400 14px var(--sans); text-anchor: middle; }
.fig-method .clbl { fill: var(--fg-dim); font: 400 14px var(--sans); }
.fig-method .rlbl { fill: var(--fg-dim); font: 600 12px var(--sans); letter-spacing: .12em; }
.fig-method .quote { fill: var(--fg); font-style: italic; font-size: 18px; text-anchor: middle; }
.fig-method .blbl { fill: var(--fg); font-size: 18px; font-weight: 600; text-anchor: middle; }
.fig-method .blbl.hi { fill: #f0cf8a; }
.fig-method .blbl.pk { fill: #f2bdea; }
.fig-method .blbl.sm { font-size: 16px; }
.fig-method .vlbl { fill: #f0cf8a; font: 600 13px var(--sans); letter-spacing: .14em; text-anchor: middle; }
.fig-method .blk { stroke-width: 1.4; }
.fig-method .blk.blue { fill: rgba(111, 157, 255, .10); stroke: rgba(111, 157, 255, .72); }
.fig-method .blk.gold { fill: rgba(232, 188, 98, .13); stroke: rgba(232, 188, 98, .82); }
.fig-method .blk.pink { fill: rgba(232, 140, 214, .12); stroke: rgba(232, 140, 214, .78); }
.fig-method .blk.grey { fill: rgba(233, 236, 242, .04); stroke: rgba(233, 236, 242, .32); }
.fig-method .frame rect { fill: none; stroke: rgba(233, 236, 242, .3); }
.fig-method .frame.dash rect { stroke: rgba(232, 188, 98, .7); stroke-dasharray: 5 4; }
.fig-method .ghost { fill: var(--bg-card); stroke: rgba(233, 236, 242, .2); }
.fig-method .col-hl { fill: none; stroke: rgba(232, 188, 98, .75); stroke-width: 1.6; stroke-dasharray: 6 5; }
.fig-method .oplus { fill: var(--bg-card); stroke: var(--accent-hi); stroke-width: 1.6; }
.fig-method .oplus-x { stroke: var(--accent-hi); stroke-width: 1.8; fill: none; }
.fig-method .fl {
  fill: none; stroke: var(--accent-hi); stroke-width: 1.6; stroke-dasharray: 5 5;
  animation: fl-dash 1.1s linear infinite;
}
.fig-method .fl.solid { stroke-dasharray: none; animation: none; opacity: .75; }
@keyframes fl-dash { to { stroke-dashoffset: -20; } }
@media (prefers-reduced-motion: reduce) { .fig-method .fl { animation: none; } }

.caption {
  margin: 14px auto 0; max-width: 1080px; text-align: center;
  font: italic 400 16.5px/1.65 var(--serif); color: var(--fg-dim);
}
.caption b { color: var(--accent-hi); font-style: normal; font-weight: 600; }
.fig-open {
  display: inline-block; margin-left: 8px; padding: 3px 11px; vertical-align: 1px;
  font: 500 11.5px/1.5 var(--sans); font-style: normal; cursor: pointer;
  color: var(--fg-dim); background: var(--bg-card);
  border: 1px solid var(--line); border-radius: 999px; transition: .15s;
}
.fig-open:hover { color: var(--accent-hi); border-color: var(--accent); background: var(--accent-soft); }
.lightbox figure:has(img[src*="method/fig_"]) { max-width: min(1400px, 100%); }
.lightbox img[src*="method/fig_"] { background: #fff; }

/* six nav links: let the row scroll sideways on phones instead of overflowing */
.nav-brand { flex: none; }
.nav-links { min-width: 0; overflow-x: auto; white-space: nowrap; scrollbar-width: none; }
.nav-links::-webkit-scrollbar { display: none; }
@media (max-width: 620px) { .nav { gap: 16px; } }

/* author links, and the hero now leads straight into the video */
.authors a { color: inherit; text-decoration: none; border-bottom: 1px solid rgba(147, 182, 255, .35); transition: .15s; }
.authors a:hover { color: var(--accent-hi); border-bottom-color: var(--accent-hi); }
.hero { padding-bottom: 0; }
#video { padding-top: 54px; }