/* ============================================================
   PALIMPSEST LAB — main stylesheet
   GALL #1A140E · VELLUM #E9DDC2 · IRON #3B2A16
   FLUOR #C8D6FF · MADDER #A63D2E · ARCHIVE #8B8272
   ============================================================ */

:root {
  --gall: #1A140E;
  --gall-deep: #14100B;
  --well: #0F0B07;
  --panel: #211A12;
  --line: #352B1E;
  --vellum: #E9DDC2;
  --iron: #3B2A16;
  --fluor: #C8D6FF;
  --fluor-dim: #8FA0D8;
  --madder: #A63D2E;
  --madder-lt: #CF6A50;
  --archive: #8B8272;
  --body: #C6BCAB;
  --muted: #948B7B;
  --accent: var(--vellum);

  --serif: "EB Garamond", "Iowan Old Style", Georgia, serif;
  --greek: "Cardo", "EB Garamond", serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-inout: cubic-bezier(0.65, 0, 0.35, 1);

  --irk: 0; /* set by JS: minium drop-out — IR transparency + red-lamp camouflage */
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  background: var(--gall);
  color: var(--body);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

::selection { background: var(--fluor); color: var(--gall-deep); }

::-webkit-scrollbar { width: 11px; }
::-webkit-scrollbar-track { background: var(--gall-deep); }
::-webkit-scrollbar-thumb { background: #3A2F22; border-radius: 6px; border: 2px solid var(--gall-deep); }
::-webkit-scrollbar-thumb:hover { background: #4C3E2C; }

:focus-visible { outline: 2px solid var(--fluor); outline-offset: 3px; border-radius: 2px; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; margin: -1px;
  clip-path: inset(50%); overflow: hidden; white-space: nowrap;
}

.mono { font-family: var(--mono); font-size: 0.82em; letter-spacing: 0.02em; }

i, em { font-style: italic; }

/* ---------------- header ---------------- */

.site-head {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px clamp(20px, 4vw, 56px);
  background: color-mix(in srgb, var(--gall) 86%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.mark { display: flex; align-items: baseline; gap: 10px; text-decoration: none; color: var(--vellum); }
.mark-folio {
  align-self: center; width: 15px; height: 20px; border-radius: 2px;
  background: linear-gradient(180deg, var(--vellum) 0 62%, var(--fluor) 62% 74%, var(--vellum) 74%);
  box-shadow: 0 0 0 1px #00000055, 2.5px 2.5px 0 0 #4C3E2C;
}
.mark-word {
  font-family: var(--serif); font-weight: 600; font-size: 19px;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--vellum);
}
.mark-geo { font-family: var(--mono); font-size: 10.5px; color: var(--muted); letter-spacing: 0.08em; }

.site-nav { display: flex; gap: clamp(14px, 2.4vw, 30px); }
.site-nav a {
  position: relative; color: var(--body); text-decoration: none;
  font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.09em; text-transform: lowercase;
  padding: 4px 2px;
}
.site-nav a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1.5px;
  background: linear-gradient(90deg, #6A5BD8, #4FA85B, #B3462B);
  transform: scaleX(0); transform-origin: left center;
  transition: transform 0.34s var(--ease-out);
}
.site-nav a:hover { color: var(--vellum); }
.site-nav a:hover::after { transform: scaleX(1); }

/* ---------------- hero ---------------- */

.hero { padding: clamp(24px, 4vh, 56px) clamp(20px, 4vw, 56px) clamp(48px, 7vh, 96px); }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 7.2fr) minmax(320px, 4.4fr);
  gap: clamp(28px, 3.5vw, 64px);
  align-items: start;
  max-width: 1480px;
  margin: 0 auto;
}

/* --- the imaging well --- */

.stage { min-width: 0; }

.well {
  --wellbg: var(--well);
  position: relative;
  background:
    radial-gradient(120% 90% at 50% 8%, #ffffff09, transparent 55%),
    var(--wellbg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: clamp(16px, 2.6vw, 40px) clamp(16px, 2.6vw, 40px) 18px;
  transition: background-color 0.25s linear;
  box-shadow: inset 0 0 60px #00000066;
}
/* corner registration marks */
.well::before, .well::after {
  content: ""; position: absolute; width: 18px; height: 18px; pointer-events: none; opacity: 0.55;
}
.well::before {
  top: 10px; left: 10px;
  border-top: 1.5px solid var(--archive); border-left: 1.5px solid var(--archive);
}
.well::after {
  top: 10px; right: 10px;
  border-top: 1.5px solid var(--archive); border-right: 1.5px solid var(--archive);
}
.corner { position: absolute; width: 18px; height: 18px; pointer-events: none; opacity: 0.55; }
.c-bl { bottom: 10px; left: 10px; border-bottom: 1.5px solid var(--archive); border-left: 1.5px solid var(--archive); }
.c-br { bottom: 10px; right: 10px; border-bottom: 1.5px solid var(--archive); border-right: 1.5px solid var(--archive); }

.specimen { position: relative; max-width: var(--spec, 620px); margin: 0 auto; }

/* one-shot violet strike when the UV lamp first fires */
.uvlamp {
  position: absolute; inset: 0; pointer-events: none; opacity: 0; border-radius: 6px;
  background: radial-gradient(85% 70% at 50% 42%, #5D53c822, #2A226E14 55%, transparent 80%);
}
@media (prefers-reduced-motion: no-preference) {
  .well.strike .uvlamp { animation: lampStrike 0.62s steps(1, end); }
  @keyframes lampStrike {
    0% { opacity: 0.9; } 14% { opacity: 0.15; } 26% { opacity: 1; }
    38% { opacity: 0.35; } 55% { opacity: 0.85; } 100% { opacity: 0; }
  }
}
/* keep folio + furniture + slider inside the first viewport on desktop */
@media (min-width: 1101px) {
  .stage { --spec: clamp(330px, calc((100vh - 430px) * 0.7755), 620px); }
}
#folioSvg { display: block; width: 100%; height: auto; }

/* one-shot calibration sweep across the capture bed on boot */
.scanline {
  position: absolute; inset: 0; overflow: hidden;
  pointer-events: none; mix-blend-mode: screen;
}
.scanline::before {
  content: ""; position: absolute; inset: 0;
  transform: translateY(-102%);
  background: linear-gradient(180deg,
    transparent 0%, transparent 72%,
    #C8D6FF0E 90%, #C8D6FF3D 97.6%, #EEF3FFB8 99.4%, transparent 100%);
}

/* --- annotation overlay --- */

.anno-layer { position: absolute; inset: 0; pointer-events: none; }
.anno-set { opacity: 0; transition: opacity 0.35s linear; }

.anno-box {
  position: absolute; border: 1px dashed var(--fluor);
  border-radius: 3px; opacity: 0.75;
}
.anno { position: absolute; font-family: var(--mono); font-size: 10.5px; line-height: 1.5; letter-spacing: 0.02em; }
.anno i {
  position: absolute; top: -3px; left: -3px; width: 7px; height: 7px; border-radius: 50%;
  background: currentColor; box-shadow: 0 0 8px currentColor;
}
.anno span {
  position: absolute; white-space: nowrap; top: -0.65em;
  background: color-mix(in srgb, var(--well) 78%, transparent);
  padding: 3px 7px; border-radius: 2px;
}
.anno-r span { left: 26px; }
.anno-l span { right: 26px; }
.anno-r::before, .anno-l::before {
  content: ""; position: absolute; top: 0; height: 1px; width: 22px; background: currentColor; opacity: 0.7;
}
.anno-r::before { left: 2px; }
.anno-l::before { right: 2px; }

.anno-uv { color: var(--fluor); }
.anno-ir { color: var(--madder-lt); }

/* --- bench furniture --- */

.furniture {
  position: relative;
  display: flex; align-items: center; gap: 22px; flex-wrap: wrap; row-gap: 8px;
  max-width: var(--spec, 620px); margin: 16px auto 0;
  font-family: var(--mono); color: var(--muted); font-size: 10.5px;
}
.furniture::after {
  content: ""; position: absolute; inset: -2px -4px; pointer-events: none; border-radius: 4px;
  background: var(--furnColor, transparent); opacity: calc(var(--furnO, 0) * 0.8);
  mix-blend-mode: multiply; transition: opacity 0.2s linear;
}
.checker { display: flex; gap: 2px; flex: none; }
.checker i { width: 17px; height: 17px; background: var(--c); border: 1px solid #00000088; }
.scalebar { display: flex; align-items: center; gap: 8px; flex: none; }
.scalebar span { white-space: nowrap; }
.scalebar i {
  width: 90px; height: 8px;
  background: repeating-linear-gradient(90deg, var(--vellum) 0 18px, var(--gall-deep) 18px 36px);
  border: 1px solid #000;
}
.platemark { margin-left: auto; letter-spacing: 0.06em; white-space: nowrap; text-align: right; }

@media (min-width: 1101px) {
  .furniture { gap: 13px; }
  .checker i { width: 14px; height: 14px; }
  .scalebar i { width: 62px; }
  .platemark { font-size: 10px; }
}

/* --- wavelength control --- */

.lambda { position: relative; max-width: var(--spec, 620px); margin: 26px auto 4px; }

.lambda-regions {
  position: relative; height: 16px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 8px;
}
.reg { position: absolute; transform: translateX(-50%); white-space: nowrap; }
.reg-uv { color: var(--fluor-dim); }
.reg-ir { color: var(--madder-lt); }
/* band boundaries: 420 nm and 700 nm */
.notch { position: absolute; top: 14px; width: 1px; height: 18px; background: #5A4F3E; }

#lambdaSlider {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 12px; border-radius: 7px; outline-offset: 6px;
  background: linear-gradient(90deg,
    #3A2B7E 0%, #5F4FD0 6%, #4C63D6 14.8%, #3F9BB8 21.7%, #4FA85B 28.7%,
    #C3B23F 35.7%, #C87F35 42.6%, #B3462B 51.3%, #7E2A1D 58.3%, #451711 72%, #1C0D0A 100%);
  border: 1px solid #00000090;
  box-shadow: inset 0 1px 3px #00000080, 0 0 0 1px #ffffff0a;
  cursor: ew-resize;
}
#lambdaSlider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 16px; height: 30px; border-radius: 4px;
  background: linear-gradient(180deg, #F4EBD5, #CBBD9B);
  border: 1.5px solid #00000095;
  box-shadow: 0 0 0 2.5px var(--accent), 0 2px 10px #000000aa;
  transition: box-shadow 0.25s linear;
}
#lambdaSlider::-moz-range-thumb {
  width: 16px; height: 30px; border-radius: 4px;
  background: linear-gradient(180deg, #F4EBD5, #CBBD9B);
  border: 1.5px solid #00000095;
  box-shadow: 0 0 0 2.5px var(--accent), 0 2px 10px #000000aa;
}

.lambda-ticks { position: relative; height: 20px; margin-top: 7px; }
.lambda-ticks span {
  position: absolute; transform: translateX(-50%);
  font-family: var(--mono); font-size: 10px; color: var(--muted);
}
.lambda-ticks span::before {
  content: ""; position: absolute; left: 50%; top: -7px; width: 1px; height: 5px; background: var(--muted);
}
.lambda-ticks span:first-child { transform: translateX(-2px); }
.lambda-ticks span:last-child { transform: translateX(calc(-100% + 2px)); }

.stage-caption {
  max-width: var(--spec, 620px); margin: 18px auto 0;
  font-size: 14.5px; color: var(--muted); line-height: 1.55;
}
.stage-caption .mono { color: var(--archive); }

/* --- hero side column --- */

.hero-side { padding-top: clamp(4px, 1.5vh, 22px); min-width: 0; }

.eyebrow {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 22px;
}

h1 {
  font-family: var(--serif); font-weight: 500;
  font-size: clamp(32px, 3.1vw, 46px);
  line-height: 1.14; letter-spacing: -0.01em;
  color: var(--vellum);
  margin-bottom: 20px;
  text-wrap: balance;
}

.lede { font-size: 17px; line-height: 1.65; max-width: 46ch; margin-bottom: 30px; }
.lede strong { color: var(--vellum); font-weight: 600; }

/* readout */

.readout {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--panel), #1C1610);
  border-radius: 5px;
  padding: 16px 18px 14px;
  font-family: var(--mono);
  display: grid; gap: 7px;
  margin-bottom: 22px;
  max-width: 430px;
}
.readout > div { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; }
.readout dt {
  font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted);
}
.readout dd { font-size: 12.5px; color: var(--body); text-align: right; }

.ro-lambda { border-bottom: 1px solid var(--line); padding-bottom: 9px; margin-bottom: 3px; }
.ro-lambda dt { font-size: 17px; color: var(--accent); text-transform: none; transition: color 0.25s linear; }
.ro-lambda dd { font-size: 30px; color: var(--accent); letter-spacing: 0.01em; transition: color 0.25s linear; }
.ro-lambda dd em { font-style: normal; font-size: 13px; color: var(--muted); margin-left: 6px; }

.ro-leg { border-top: 1px solid var(--line); padding-top: 9px; margin-top: 3px; }
.ro-leg dd { display: flex; align-items: center; gap: 10px; }
#roLeg { min-width: 4ch; text-align: right; color: var(--accent); transition: color 0.25s linear; }
.leg-track {
  width: 110px; height: 4px; border-radius: 2px; background: #00000070;
  overflow: hidden; box-shadow: inset 0 0 0 1px #ffffff10;
}
.leg-fill {
  display: block; height: 100%; width: 100%;
  background: var(--accent);
  transform: scaleX(0.04); transform-origin: left center;
  transition: transform 0.12s linear, background-color 0.25s linear;
}

/* presets */

.presets { display: flex; gap: 10px; margin-bottom: 18px; flex-wrap: wrap; }
.preset {
  font-family: var(--mono); cursor: pointer;
  background: var(--panel); color: var(--body);
  border: 1px solid var(--line); border-radius: 4px;
  padding: 9px 14px 8px; text-align: left;
  display: grid; gap: 1px;
  transition: border-color 0.25s var(--ease-out), color 0.25s var(--ease-out), transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out);
}
.preset b { font-weight: 600; font-size: 13px; letter-spacing: 0.04em; }
.preset span { font-size: 10px; color: var(--muted); letter-spacing: 0.1em; text-transform: uppercase; }
.preset:hover { transform: translateY(-2px); color: var(--vellum); }
.preset-uv:hover, .preset-uv[aria-pressed="true"] { border-color: var(--fluor-dim); box-shadow: 0 0 14px #8fa0f033; }
.preset-vis:hover, .preset-vis[aria-pressed="true"] { border-color: var(--archive); }
.preset-ir:hover, .preset-ir[aria-pressed="true"] { border-color: var(--madder); box-shadow: 0 0 14px #b3462b30; }
.preset[aria-pressed="true"] { color: var(--vellum); }
.preset[aria-pressed="true"] span { color: var(--accent); }

.hint { font-size: 13.5px; color: var(--muted); font-style: italic; max-width: 40ch; }

/* ---------------- shared section chrome ---------------- */

section { padding: clamp(64px, 9vh, 120px) clamp(20px, 4vw, 56px); scroll-margin-top: 64px; }

.sec-head { max-width: 1180px; margin: 0 auto clamp(36px, 5vh, 60px); }
.slug {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 14px;
}
.slug::before { content: ""; display: inline-block; width: 26px; height: 1px; background: var(--archive); vertical-align: 4px; margin-right: 12px; }
h2 {
  font-family: var(--serif); font-weight: 500; color: var(--vellum);
  font-size: clamp(28px, 2.6vw, 40px); line-height: 1.15; letter-spacing: -0.008em;
  margin-bottom: 14px;
}
.sec-lede { max-width: 62ch; color: var(--body); font-size: 17px; }

/* ---------------- case files ---------------- */

.cases { background: var(--gall-deep); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.case-list { list-style: none; max-width: 1180px; margin: 0 auto; }

.case {
  display: grid;
  grid-template-columns: 150px minmax(0, 1.5fr) 170px minmax(0, 1fr);
  gap: 10px 28px; align-items: baseline;
  padding: 22px 18px;
  border-top: 1px solid var(--line);
  border-radius: 4px;
  transition: background-color 0.3s var(--ease-out);
}
.case:last-child { border-bottom: 1px solid var(--line); }
.case:hover { background: #241D1477; }

.c-mark { display: grid; gap: 4px; }
.c-mark > .mono:first-child { color: var(--vellum); font-size: 14px; letter-spacing: 0.04em; transition: color 0.3s; }
.case:hover .c-mark > .mono:first-child { color: var(--fluor); }
.c-olim { color: var(--muted); font-size: 10.5px; }

.chip {
  justify-self: start; font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 2.5px 7px; border-radius: 3px; margin-top: 3px;
}
.chip-live { color: var(--fluor); border: 1px solid #8fa0f055; background: #8fa0f014; }
.chip-prog { color: var(--madder-lt); border: 1px solid #b3462b55; background: #b3462b14; }

.c-texts { display: grid; gap: 3px; min-width: 0; }
.c-over { font-size: 13.5px; color: var(--muted); }
.c-under { font-weight: 600; color: var(--vellum); font-size: 17.5px; line-height: 1.35; }

.c-rec { display: flex; align-items: center; gap: 12px; }
.rec-bar {
  position: relative; width: 96px; height: 4px; border-radius: 2px;
  background: #00000080; box-shadow: inset 0 0 0 1px #ffffff0e; overflow: hidden; flex: none;
}
.rec-bar::after {
  content: ""; position: absolute; inset: 0 auto 0 0; width: var(--p);
  background: linear-gradient(90deg, var(--fluor-dim), var(--fluor));
  border-radius: 2px;
}
.rec-num { color: var(--vellum); font-size: 13px; }

.c-sig { font-size: 14.5px; color: var(--body); font-style: italic; line-height: 1.5; }

/* ---------------- the bench / rig ---------------- */

.bench-grid {
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: clamp(28px, 4vw, 64px);
  max-width: 1180px; margin: 0 auto;
  align-items: start;
}

.rig-fig {
  background: var(--panel); border: 1px solid var(--line); border-radius: 6px;
  padding: clamp(14px, 2vw, 28px);
}
.rig-svg { display: block; width: 100%; height: auto; }
.rig-label text { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.03em; }
.rig-cap { display: block; margin-top: 10px; color: var(--muted); font-size: 10.5px; letter-spacing: 0.08em; }

.spec { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.spec th {
  font-family: var(--mono); font-weight: 500; font-size: 10.5px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--muted); text-align: left; vertical-align: top;
  padding: 9px 18px 9px 0; white-space: nowrap; width: 1%;
}
.spec td { padding: 9px 0; color: var(--body); border-bottom: 1px solid #2A2217; }
.spec tr:first-child td, .spec tr:first-child th { border-top: 1px solid #2A2217; }
.spec tr:first-child th { border-top: 1px solid transparent; }
.spec th { border-bottom: 1px solid #2A2217; }

.pipeline { margin-top: 26px; list-style: none; counter-reset: step; display: grid; gap: 10px; }
.pipeline li {
  counter-increment: step; position: relative; padding-left: 44px;
  font-size: 15px; color: var(--body); line-height: 1.5;
}
.pipeline li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute; left: 0; top: 2px;
  font-family: var(--mono); font-size: 11px; color: var(--fluor-dim);
  border: 1px solid var(--line); border-radius: 3px; padding: 2px 5px;
  background: var(--panel);
}
.pipeline b { color: var(--vellum); font-weight: 600; }

.bands {
  display: flex; flex-wrap: wrap; gap: 10px;
  max-width: 1180px; margin: clamp(36px, 5vh, 56px) auto 0;
}
.band {
  --bc: #888;
  flex: 1 1 64px; min-width: 64px;
  display: grid; gap: 3px; justify-items: center;
  padding: 12px 6px 10px;
  background: var(--panel); border: 1px solid var(--line); border-radius: 5px;
  transition: transform 0.3s var(--ease-out), border-color 0.3s var(--ease-out);
  cursor: pointer; font: inherit; color: inherit;
}
.band::before {
  content: ""; width: 100%; height: 8px; border-radius: 2px;
  background: var(--bc); box-shadow: 0 0 12px color-mix(in srgb, var(--bc) 55%, transparent);
}
.band b { font-family: var(--mono); font-weight: 600; font-size: 12.5px; color: var(--vellum); }
.band i { font-family: var(--mono); font-style: normal; font-size: 9.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.band:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--bc) 60%, var(--line)); }
.band[aria-pressed="true"] {
  border-color: color-mix(in srgb, var(--bc) 75%, var(--vellum));
  box-shadow: 0 0 16px -2px color-mix(in srgb, var(--bc) 60%, transparent), inset 0 0 0 1px color-mix(in srgb, var(--bc) 45%, transparent);
}
.band[aria-pressed="true"] i { color: var(--body); }
.bands-hint {
  max-width: 1180px; margin: 14px auto 0;
  font-size: 11px; color: var(--muted); letter-spacing: 0.06em;
}

/* ---------------- essay ---------------- */

.essay { background: var(--gall-deep); border-top: 1px solid var(--line); }
.essay .sec-head, .essay-body, .footnotes { max-width: 660px; margin-left: auto; margin-right: auto; }

.byline { font-family: var(--mono); font-size: 11.5px; color: var(--muted); letter-spacing: 0.04em; line-height: 1.7; max-width: 58ch; }

.essay-body p {
  font-size: 19px; line-height: 1.72; margin-bottom: 1.5em; color: #CEC5B4;
}
.essay-body p:first-child::first-letter {
  font-size: 3.35em; float: left; line-height: 0.82;
  padding: 4px 10px 0 0; color: var(--vellum); font-weight: 500;
}
.essay-body sup { line-height: 0; }
.essay-body sup a {
  font-family: var(--mono); font-size: 11px; color: var(--fluor);
  text-decoration: none; padding: 1px 3px;
}
.essay-body sup a:hover { text-decoration: underline; }

.pull {
  margin: 2.2em 0; padding: 6px 0 6px 28px;
  border-left: 2px solid var(--fluor-dim);
  font-family: var(--greek); font-size: 30px; color: var(--fluor);
  text-shadow: 0 0 22px #8fa0f04d;
  letter-spacing: 0.02em;
}
.pull footer { margin-top: 10px; font-family: var(--mono); font-size: 11.5px; color: var(--muted); text-shadow: none; letter-spacing: 0.02em; line-height: 1.6; }

.footnotes { margin-top: 56px; padding-top: 22px; position: relative; }
.footnotes::before { content: ""; position: absolute; top: 0; left: 0; width: 88px; height: 1px; background: var(--archive); }
.footnotes ol { list-style: none; counter-reset: fn; display: grid; gap: 8px; }
.footnotes li {
  counter-increment: fn; position: relative; padding: 6px 8px 6px 30px;
  max-width: 545px; /* holds the note text at ≈74ch */
  font-size: 14.5px; color: var(--muted); line-height: 1.62;
  border-radius: 3px; transition: background-color 0.5s, color 0.5s;
}
.footnotes li::before {
  content: counter(fn); position: absolute; left: 2px; top: 7px;
  font-family: var(--mono); font-size: 11px; color: var(--fluor);
}
.footnotes li:target { background: #8fa0f01a; color: var(--body); }
.fn-back { color: var(--fluor); text-decoration: none; margin-left: 6px; }
.fn-back:hover { text-decoration: underline; }

/* ---------------- colophon ---------------- */

.colophon { padding: clamp(48px, 7vh, 88px) clamp(20px, 4vw, 56px) 34px; border-top: 1px solid var(--line); }
.col-grid {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(24px, 4vw, 64px); max-width: 1180px; margin: 0 auto 48px;
}
.colophon .mark-word { margin-bottom: 14px; display: inline-block; }
.col-addr { font-size: 15px; line-height: 1.7; color: var(--muted); }
.col-addr .mono { font-size: 11px; display: inline-block; margin-top: 10px; color: var(--archive); }
.col-label { font-size: 10.5px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--archive); margin-bottom: 12px; }
.col-grid p:not(.col-label):not(.mark-word) { font-size: 14.5px; color: var(--muted); line-height: 1.65; max-width: 44ch; }
.col-fine { text-align: center; font-size: 10.5px; color: #8C8371; letter-spacing: 0.06em; }

/* ---------------- SVG dynamic bits ---------------- */

#folioSvg .versal { opacity: calc(1 - var(--irk) * 0.82); }
#folioSvg .rubric { opacity: calc(1 - var(--irk) * 0.82); }

/* ============================================================
   MOTION — boot sequence & scroll reveals
   (defaults are fully visible; JS + motion-ok gate the choreography)
   ============================================================ */

@media (prefers-reduced-motion: no-preference) {

  html.js .boot { opacity: 0; }
  html.js.booted .boot { animation: bootIn 0.9s var(--ease-out) both; }
  html.js.booted .b1 { animation-delay: 0.10s; }
  html.js.booted .b2 { animation-delay: 0.22s; }
  html.js.booted .b3 { animation-delay: 0.34s; }
  html.js.booted .b4 { animation-delay: 0.50s; animation-name: bootFlicker; animation-duration: 1.1s; }
  html.js.booted .b5 { animation-delay: 0.72s; }
  html.js.booted .b6 { animation-delay: 0.86s; }

  html.js .well { opacity: 0; }
  html.js.booted .well { animation: lampWarm 1.5s var(--ease-out) 0.15s both; }

  html.js .stage-caption { opacity: 0; }
  html.js.booted .stage-caption { animation: bootIn 0.9s var(--ease-out) 1.0s both; }

  /* calibration sweep: one sensor pass down the bed once the lamp is warm */
  html.js.booted .scanline::before { animation: scanPass 2s var(--ease-inout) 1.75s both; }
  @keyframes scanPass {
    from { transform: translateY(-102%); }
    to   { transform: translateY(102%); }
  }

  @keyframes bootIn {
    from { opacity: 0; transform: translateY(14px); }
    to   { opacity: 1; transform: none; }
  }
  @keyframes bootFlicker {
    0% { opacity: 0; transform: translateY(14px); }
    38% { opacity: 0; }
    42% { opacity: 0.85; transform: none; }
    48% { opacity: 0.2; }
    56% { opacity: 1; }
    64% { opacity: 0.55; }
    100% { opacity: 1; transform: none; }
  }
  @keyframes lampWarm {
    from { opacity: 0; }
    60%  { opacity: 0.85; }
    to   { opacity: 1; }
  }

  html.js .reveal { opacity: 0; transform: translateY(16px); }
  html.js .reveal.in {
    opacity: 1; transform: none;
    transition: opacity 0.75s var(--ease-out), transform 0.75s var(--ease-out);
    transition-delay: var(--d, 0ms);
  }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 1100px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-side { max-width: 660px; }
  .case { grid-template-columns: 130px minmax(0, 1fr) 150px; }
  .c-sig { grid-column: 2 / -1; margin-top: -6px; }
}

@media (max-width: 860px) {
  .bench-grid { grid-template-columns: 1fr; }
  .col-grid { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 700px) {
  body { font-size: 17px; }
  .site-head {
    flex-direction: column; align-items: flex-start; gap: 6px;
    padding-top: 10px; padding-bottom: 10px;
  }
  .mark-geo { display: none; }
  .site-nav { width: 100%; justify-content: space-between; gap: 8px; }
  .site-nav a { font-size: 11px; white-space: nowrap; }

  .well { padding: 14px 12px 14px; }
  .anno { font-size: 9px; }
  .anno-r span { left: 18px; }
  .anno-l span { right: 18px; }
  .anno-r::before, .anno-l::before { width: 14px; }
  .platemark { display: none; }
  .furniture { gap: 14px; }

  .case { grid-template-columns: 1fr; gap: 8px; padding: 20px 10px; }
  .c-mark { grid-template-columns: auto auto auto; justify-content: start; gap: 12px; align-items: baseline; }
  .c-sig { grid-column: auto; margin-top: 0; }
  .c-rec { order: 4; }

  .essay-body p { font-size: 18px; }
  .pull { font-size: 24px; padding-left: 20px; }
}

@media (max-width: 430px) {
  .lambda-regions { font-size: 9px; letter-spacing: 0.07em; }
  .checker i { width: 13px; height: 13px; }
  .scalebar i { width: 64px; }
  .presets { gap: 8px; }
  .preset { padding: 8px 11px 7px; }
  .lambda-ticks span:nth-child(2), .lambda-ticks span:nth-child(5) { display: none; }
}