/* =========================================================================
   Triage 2030 — noir stylesheet. Bone paper, charcoal ink, film grain.
   One switch (LIGHTS) flips the whole city into night.
   ========================================================================= */

:root {
  --paper: #e9e5dc;
  --panel: #f1eee7;
  --ink: #1a191d;
  --ink-soft: #55525a;
  --ink-faint: rgba(26, 25, 29, 0.18);
  --wall: #101013;
  --chalk: #e8e4da;
  --font-display: 'Oswald', 'Arial Narrow', sans-serif;
  --font-type: 'Special Elite', 'Courier New', monospace;
  --font-body: 'Courier Prime', 'Courier New', monospace;
  --font-hand: 'Caveat', cursive;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; padding: 0; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.7;
  overflow-x: hidden;
  transition: background 0.6s ease, color 0.6s ease;
}

/* film grain over everything, jittering like old celluloid */
body::after {
  content: '';
  position: fixed;
  inset: -60px;
  pointer-events: none;
  z-index: 70;
  opacity: 0.55;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='2' seed='9'/%3E%3CfeColorMatrix type='matrix' values='0 0 0 0 0.1 0 0 0 0 0.1 0 0 0 0 0.1 0 0 0 0.06 0'/%3E%3C/filter%3E%3Crect width='220' height='220' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain-jitter 0.9s steps(4) infinite;
}
@keyframes grain-jitter {
  0% { transform: translate(0, 0); }
  25% { transform: translate(-14px, 9px); }
  50% { transform: translate(9px, -13px); }
  75% { transform: translate(-7px, -8px); }
  100% { transform: translate(11px, 12px); }
}

/* night mode: swap the vars, invert the drawings (svg only — stages stay dark) */
body.noir-dark { --paper: #131317; --panel: #1b1b21; --ink: #e6e2d8; --ink-soft: #a39f95; --ink-faint: rgba(230, 226, 216, 0.2); }
body.noir-dark .scene-stage { background: #101013; border-color: #3a3a40; }
body.noir-dark .scene-stage svg,
body.noir-dark .photo-wrap svg,
body.noir-dark #hero-art svg { filter: invert(0.9) contrast(1.05); }

::selection { background: rgba(26, 25, 29, 0.8); color: var(--paper); }
body.noir-dark ::selection { background: rgba(230, 226, 216, 0.75); color: #131317; }

h1, h2, h3, h4 { margin: 0 0 0.5em; }
h2.section-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.9rem, 4vw, 3rem);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.section-sub { color: var(--ink-soft); max-width: 62ch; margin: 0 0 2.4rem; }
.chalk .section-sub { margin-left: auto; margin-right: auto; }
.section-title.light, .section-sub.light { color: var(--chalk); }

.wrap { max-width: 1060px; margin: 0 auto; padding: clamp(4rem, 9vh, 7rem) 1.4rem; }
.wrap.narrow { max-width: 760px; }

/* ---------------- lights switch ---------------- */
#lights {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 80;
  font-family: var(--font-type);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  padding: 0.45em 1em;
  background: var(--panel);
  color: var(--ink);
  border: 1.5px solid var(--ink);
  cursor: pointer;
  box-shadow: 3px 3px 0 var(--ink);
  transition: all 0.25s ease;
}
#lights:hover { transform: translate(-1px, -1px); box-shadow: 4px 4px 0 var(--ink); }
#lights:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--ink); }

/* ---------------- hero ---------------- */
#hero { position: relative; min-height: 100vh; display: grid; place-items: center; overflow: hidden; }
#hero-art, #hero-art svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-inner { position: relative; text-align: center; padding: 0 1.2rem; z-index: 2; }
.kicker {
  font-family: var(--font-type);
  font-size: 0.82rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 1.6rem;
}
.title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(3.4rem, 11vw, 9rem);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  line-height: 0.95;
  color: var(--ink);
  text-shadow: 0 0 24px var(--paper);
  animation: sign-flicker 7s linear infinite;
}
@keyframes sign-flicker {
  0%, 100% { opacity: 1; }
  3% { opacity: 0.75; }
  4% { opacity: 1; }
  38% { opacity: 1; }
  39% { opacity: 0.6; }
  40% { opacity: 0.95; }
  41% { opacity: 0.7; }
  42% { opacity: 1; }
  77% { opacity: 1; }
  78% { opacity: 0.8; }
  79% { opacity: 1; }
}
.hero-line {
  display: inline-block;
  max-width: 34em;
  font-family: var(--font-type);
  font-size: clamp(1rem, 2vw, 1.3rem);
  color: var(--ink);
  margin: 1.4rem 0 0;
  padding: 0.5em 1.1em;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  text-shadow: 0 0 10px var(--paper);
  opacity: 0;
  animation: fade-in 1.8s ease 1.4s forwards;
}
.hero-meta {
  font-family: var(--font-type);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 1.2rem 0 0;
  padding: 0.3em 0.8em;
  background: color-mix(in srgb, var(--paper) 80%, transparent);
  opacity: 0;
  animation: fade-in 1.8s ease 2.2s forwards;
}
@keyframes fade-in { to { opacity: 1; } }
.scroll-cue {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  font-size: 1.5rem;
  color: var(--ink-soft);
  text-decoration: none;
  animation: cue-bob 2.4s ease-in-out infinite;
}
@keyframes cue-bob { 50% { transform: translate(-50%, 8px); } }

/* the cover's two shifts: fx groups cross-fade under one cord */
#hero-art .fx { transition: opacity 1.1s ease; }
#hero-art[data-shift='night'] .fx-morning { opacity: 0; }
#hero-art[data-shift='morning'] .fx-night { opacity: 0; }
.lamp.hero-lamp { position: absolute; right: 1.8rem; bottom: 1.6rem; z-index: 3; }
.hero-lamp::after {
  content: 'flip the cover';
  position: absolute;
  left: 50%;
  bottom: -1.3rem;
  transform: translateX(-50%);
  font-family: var(--font-type);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-soft);
  white-space: nowrap;
}

/* ---------------- manifesto ---------------- */
.lede { font-size: clamp(1.1rem, 1.9vw, 1.3rem); line-height: 1.9; }
.dropcap::first-letter {
  float: left;
  font-family: var(--font-display);
  font-size: 4.4em;
  line-height: 0.82;
  padding: 0.06em 0.14em 0 0;
}

/* ---------------- cards ---------------- */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 1.4rem; }
.card {
  background: var(--panel);
  border: 1.5px solid var(--ink);
  padding: 1.5rem 1.4rem 1.3rem;
  box-shadow: 5px 5px 0 rgba(26, 25, 29, 0.22);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}
.card:nth-child(even) { transform: rotate(0.5deg); }
.card:nth-child(odd) { transform: rotate(-0.4deg); }
.card:hover { transform: rotate(0deg) translateY(-4px); box-shadow: 7px 7px 0 rgba(26, 25, 29, 0.28); }
.card-icon { width: 62px; height: 40px; display: block; margin-bottom: 0.8rem; }
.card h3 { font-family: var(--font-type); font-size: 1.02rem; letter-spacing: 0.04em; margin-bottom: 0.6rem; }
.card p { font-size: 0.9rem; color: var(--ink-soft); margin: 0; }

/* ---------------- case files ---------------- */
.case {
  position: relative;
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(4rem, 9vh, 7rem) 1.4rem;
  display: grid;
  grid-template-columns: 290px minmax(0, 1fr);
  gap: clamp(1.6rem, 4vw, 3.2rem);
  align-items: start;
}
.case:nth-child(even) { grid-template-columns: minmax(0, 1fr) 290px; }
.case:nth-child(even) .file-col { order: 2; }

.file-col { position: sticky; top: 6vh; }
.photo-wrap {
  position: relative;
  width: min(250px, 70vw);
  margin: 0 auto;
  background: var(--panel);
  padding: 10px 10px 14px;
  box-shadow: 6px 8px 0 rgba(26, 25, 29, 0.18);
  transform: rotate(-1.2deg);
}
.photo-wrap svg { width: 100%; height: auto; display: block; }
.stamp {
  position: absolute;
  bottom: 12px;
  right: 12px;
  font-family: var(--font-type);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  border: 2px solid var(--ink-soft);
  color: var(--ink-soft);
  padding: 0.15em 0.5em;
  transform: rotate(-4deg);
  opacity: 0.85;
}
.c-meta { text-align: center; font-size: 0.85rem; color: var(--ink-soft); margin: 1rem 0 0.3rem; }
.c-context { text-align: center; font-size: 0.9rem; margin: 0.3rem 0; }
.c-condition { text-align: center; font-size: 0.9rem; font-style: italic; color: var(--ink-soft); margin: 0.2rem 0; }
.c-prop { text-align: center; font-family: var(--font-hand); font-size: 1.25rem; color: var(--ink-soft); margin: 0.6rem 0 0; }
.c-prop em { color: var(--ink); }

.c-name {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 1rem;
}
.c-name::after {
  content: '';
  display: block;
  width: 130px;
  height: 3px;
  margin-top: 0.55rem;
  background: var(--ink);
  box-shadow: 3px 3px 0 var(--ink-faint);
}

/* scene stage */
.scene-stage {
  position: relative;
  aspect-ratio: 640 / 420;
  background: var(--panel);
  border: 1.5px solid var(--ink);
  box-shadow: 7px 7px 0 rgba(26, 25, 29, 0.22);
  overflow: hidden;
}
.scene-layer { position: absolute; inset: 0; opacity: 0; transition: opacity 0.7s ease; }
.scene-layer svg { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.scene-stage[data-mode='today'] .scene-today,
.scene-stage[data-mode='preferable'] .scene-preferable,
.scene-stage[data-mode='dangerous'] .scene-dangerous { opacity: 1; }

.scene-tag {
  position: absolute;
  font-family: var(--font-type);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  background: var(--paper);
  border: 1px solid var(--ink);
  padding: 0.1em 0.7em;
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
  z-index: 2;
}
.tag-today { top: 0.8rem; left: 0.8rem; }
.tag-morning { top: 0.8rem; right: 0.8rem; }
.tag-night { bottom: 0.8rem; right: 0.8rem; }
.scene-stage[data-mode='today'] .tag-today,
.scene-stage[data-mode='preferable'] .tag-morning,
.scene-stage[data-mode='dangerous'] .tag-night { opacity: 1; }
.scene-stage[data-mode='dangerous']::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(120% 100% at 50% 42%, transparent 58%, rgba(10, 10, 12, 0.42) 100%);
}

.scene-controls { display: flex; align-items: flex-end; justify-content: space-between; gap: 1rem; margin-bottom: 0.9rem; flex-wrap: wrap; }
.mode-tabs { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.mode-tab {
  font-family: var(--font-type);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  padding: 0.35em 0.9em;
  background: transparent;
  border: 1px solid var(--ink-faint);
  color: var(--ink-soft);
  cursor: pointer;
  transition: all 0.3s ease;
}
.mode-tab:hover { border-color: var(--ink); color: var(--ink); }
.mode-tab.active { background: var(--ink); color: var(--paper); border-color: var(--ink); }

/* the lamp: pull cord + bulb (a decoration that follows the real switch) */
.lamp {
  position: relative;
  background: none;
  border: none;
  cursor: pointer;
  display: grid;
  justify-items: center;
  padding: 0 0.4rem 0.2rem;
  color: var(--ink);
}
.lamp .cord { display: block; width: 1.5px; height: 30px; background: var(--ink); transition: height 0.3s ease; }
.lamp .bulb { display: block; font-size: 1.35rem; line-height: 1; margin-top: 2px; transition: transform 0.3s ease; }
.lamp:hover .bulb { transform: scale(1.15); }
.lamp.night .cord { height: 38px; }
.lamp.night .bulb { transform: rotate(180deg); }
.lamp:focus-visible { outline: 2px dashed var(--ink); outline-offset: 4px; }
.lamp-decor { cursor: default; }

/* beats */
.beat-box { margin-top: 1.4rem; min-height: 7.5em; }
.beat-title {
  font-family: var(--font-type);
  font-size: 0.82rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 0.6rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px dashed var(--ink-faint);
}
.beat-title2 { font-family: var(--font-display); font-weight: 500; font-size: 1.35rem; text-transform: uppercase; letter-spacing: 0.05em; margin: 0 0 0.3rem; }
.beat-driver { font-style: italic; font-size: 0.9rem; color: var(--ink-soft); margin: 0 0 0.7rem; }
.beat-text { font-size: 0.98rem; margin: 0; }

/* singularity fork */
.fork { margin-top: 1.8rem; border: 1px dashed var(--ink-faint); padding: 1rem 1.1rem; }
.fork-label { font-family: var(--font-type); font-size: 0.75rem; letter-spacing: 0.24em; text-transform: uppercase; color: var(--ink-soft); margin: 0 0 0.6rem; }
.fork-chips { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.fork-chip {
  font-family: var(--font-type);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  padding: 0.3em 1em;
  background: transparent;
  border: 1px solid var(--ink-faint);
  color: var(--ink-soft);
  cursor: pointer;
}
.fork-chip.active { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.fork-text { font-size: 0.93rem; margin: 0.8rem 0 0; min-height: 3.2em; }
.fork[data-side='abundance'] { border-left: 3px solid var(--ink); }
.fork[data-side='dependence'] { border-left: 3px solid var(--ink-soft); }

.quote-wrap { margin: 1.9rem 0 0.4rem; }
.quote-label {
  font-family: var(--font-type);
  font-size: 0.66rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 0.35rem;
}
.quote {
  font-family: var(--font-type);
  font-size: clamp(1.15rem, 2.2vw, 1.45rem);
  line-height: 1.55;
  margin: 0;
  transform: rotate(-0.5deg);
}

.signal { font-size: 0.8rem; color: var(--ink-soft); border-top: 1px dashed var(--ink-faint); padding-top: 0.7rem; margin-top: 1.4rem; }
.signal-src { font-style: italic; }

/* marginalia: sticky notes under the story, never over the drawing */
.margins { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.2rem; margin-top: 2rem; }
.marginalia {
  font-family: var(--font-hand);
  font-size: 1.3rem;
  line-height: 1.3;
  display: grid;
  gap: 0.1rem;
  align-content: start;
  background: var(--panel);
  border: 1px solid var(--ink-faint);
  padding: 0.7rem 1rem 0.8rem;
  box-shadow: 4px 5px 0 rgba(26, 25, 29, 0.16);
}
.marginalia .m-label { font-family: var(--font-type); font-size: 0.68rem; letter-spacing: 0.3em; text-transform: uppercase; color: var(--ink-soft); }
.m-hope { transform: rotate(-1.2deg); }
.m-worry { transform: rotate(1.4deg); }

/* ---------------- a11y helpers ---------------- */
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 0.5em 1em;
  font-family: var(--font-type);
  background: var(--ink);
  color: var(--paper);
  transform: translateY(-200%);
  transition: transform 0.2s ease;
}
.skip-link:focus { transform: none; }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px dashed var(--ink);
  outline-offset: 3px;
}
.chalk button:focus-visible, .chalk input:focus-visible { outline-color: var(--chalk); }

/* ---------------- case index ---------------- */
.case-index { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 0.8rem; margin-top: 2rem; }
.case-index-item {
  display: grid;
  gap: 0.15rem;
  padding: 0.8rem 1rem;
  border: 1.5px solid var(--ink);
  background: var(--panel);
  color: var(--ink);
  text-decoration: none;
  box-shadow: 3px 3px 0 var(--ink-faint);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.case-index-item:hover { transform: translate(-1px, -1px); box-shadow: 5px 5px 0 var(--ink-faint); }
.ci-no { font-family: var(--font-type); font-size: 0.7rem; letter-spacing: 0.22em; color: var(--ink-soft); }
.ci-name { font-family: var(--font-display); font-size: 1.15rem; text-transform: uppercase; letter-spacing: 0.05em; }
.ci-where { font-size: 0.8rem; color: var(--ink-soft); }

/* ---------------- futures lab ---------------- */
[hidden] { display: none !important; }
body { --strata-mix: var(--ink); --strata-step: 6%; }
body.noir-dark { --strata-mix: #000; --strata-step: 16%; }

.lab { margin-top: 1.8rem; border: 1.5px solid var(--ink); background: var(--panel); box-shadow: 5px 5px 0 var(--ink-faint); }
.lab-summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.3rem 1rem;
  padding: 0.9rem 1.1rem;
  cursor: pointer;
  list-style: none;
}
.lab-summary::-webkit-details-marker { display: none; }
.ls-title { font-family: var(--font-display); font-size: 1.15rem; text-transform: uppercase; letter-spacing: 0.08em; }
.ls-title::before { content: '+ '; font-family: var(--font-type); }
.lab[open] .ls-title::before { content: '– '; }
.ls-sub { font-family: var(--font-type); font-size: 0.74rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-soft); }
.lab-inner { padding: 0 1.1rem 1.2rem; border-top: 1px dashed var(--ink-faint); }
.lab-tabs { display: flex; gap: 0.5rem; flex-wrap: wrap; margin: 1rem 0 0.9rem; }
.lab-tab {
  font-family: var(--font-type);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  padding: 0.35em 0.9em;
  background: transparent;
  border: 1px solid var(--ink-faint);
  color: var(--ink-soft);
  cursor: pointer;
}
.lab-tab:hover { border-color: var(--ink); color: var(--ink); }
.lab-tab.active { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.lab-intro { font-size: 0.88rem; color: var(--ink-soft); margin: 0 0 0.6rem; }

/* path map: one fork, two lanes */
.path-map { display: grid; grid-auto-rows: 78px; margin: 0.4rem 0 0.2rem; }
.pm-start, .pm-cell { position: relative; display: grid; place-items: center; }
.pm-cell::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  border-top: 2px solid var(--ink);
}
.pm-cell.lane-night::before { border-top-style: dashed; }
.pm-start::before {
  content: '';
  position: absolute;
  right: 0;
  top: 25%;
  bottom: 25%;
  border-right: 2px solid var(--ink);
}
.pm-start::after { content: ''; position: absolute; left: 0; right: 0; top: 50%; border-top: 2px solid var(--ink); }
.pm-node {
  position: relative;
  z-index: 1;
  display: grid;
  justify-items: center;
  gap: 0.25rem;
  padding: 0.2rem 0.4rem;
  background: transparent;
  border: none;
  color: var(--ink);
  cursor: pointer;
  font: inherit;
}
.pm-dot {
  width: 18px;
  height: 18px;
  border: 2px solid var(--ink);
  border-radius: 50%;
  background: var(--panel);
  transition: transform 0.2s ease, background 0.2s ease;
}
.lane-night .pm-dot { border-radius: 0; transform: rotate(45deg) scale(0.85); }
.pm-node:hover .pm-dot { background: var(--ink-faint); }
.pm-node.active .pm-dot { background: var(--ink); }
.lane-night .pm-node.active .pm-dot { transform: rotate(45deg) scale(1); }
.pm-year { position: absolute; top: 100%; left: 50%; transform: translateX(-50%); margin-top: 1px; font-family: var(--font-type); font-size: 0.72rem; letter-spacing: 0.08em; white-space: nowrap; }
.pm-node.active .pm-year { text-decoration: underline; text-underline-offset: 3px; }
.pm-node-start .pm-dot { background: var(--ink); }
.pm-legend { display: flex; flex-wrap: wrap; gap: 0.3rem 1.4rem; font-family: var(--font-type); font-size: 0.72rem; color: var(--ink-soft); margin: 0 0 0.8rem; }

.path-card { border: 1px solid var(--ink-faint); border-left: 4px solid var(--ink); padding: 0.9rem 1.1rem 0.8rem; background: var(--paper); }
.path-card.lane-night { border-left-style: double; border-left-width: 6px; }
.pc-tag { font-family: var(--font-type); font-size: 0.68rem; letter-spacing: 0.24em; text-transform: uppercase; color: var(--ink-soft); margin: 0 0 0.3rem; }
.pc-title { font-family: var(--font-display); font-weight: 500; font-size: 1.2rem; letter-spacing: 0.03em; line-height: 1.3; margin: 0 0 0.6rem; }
.pc-goal { font-size: 0.93rem; margin: 0 0 0.6rem; }
.pc-memory { font-family: var(--font-hand); font-size: 1.35rem; line-height: 1.3; margin: 0.4rem 0 0.6rem; padding-left: 0.9rem; border-left: 2px solid var(--ink-faint); }
.pc-note { font-size: 0.82rem; font-style: italic; color: var(--ink-soft); margin: 0 0 0.5rem; }
.pc-facts { display: grid; grid-template-columns: max-content 1fr; gap: 0.35rem 1rem; margin: 0 0 0.7rem; font-size: 0.88rem; }
.pc-facts dt { font-family: var(--font-type); font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-soft); padding-top: 0.2em; }
.pc-facts dd { margin: 0; }
.pc-now { font-size: 0.88rem; margin: 0 0 0.6rem; padding: 0.5rem 0.7rem; background: var(--panel); border: 1px dashed var(--ink-faint); }
.pips { display: inline-flex; align-items: center; gap: 4px; }
.pip { width: 11px; height: 11px; border: 1.5px solid var(--ink); }
.pip.on { background: var(--ink); }
.pip-label { margin-left: 0.5rem; font-size: 0.84rem; }
.pc-nav { display: flex; flex-wrap: wrap; gap: 0.5rem 1.2rem; align-items: center; }
.pc-back, .pc-swap, .dig {
  font-family: var(--font-type);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  padding: 0.4em 0.9em;
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--ink);
  cursor: pointer;
}
.pc-back:hover, .dig:hover { background: var(--ink); color: var(--paper); }
.pc-swap { border-color: var(--ink-faint); color: var(--ink-soft); }
.pc-swap:hover { border-color: var(--ink); color: var(--ink); }

/* layers: dig down, climb back up */
.cla-brief, .climb-brief { padding: 0.7rem 1rem; border: 1px dashed var(--ink-faint); margin: 0 0 0.8rem; }
.cb-label, .cm-label, .rf-label { display: block; font-family: var(--font-type); font-size: 0.66rem; letter-spacing: 0.24em; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 0.2rem; }
.cb-text { font-family: var(--font-type); font-size: 1rem; line-height: 1.5; margin: 0; }
.strata { display: grid; gap: 0; border: 1px solid var(--ink); }
.stratum { background: color-mix(in srgb, var(--strata-mix) calc(var(--i) * var(--strata-step)), var(--panel)); }
.stratum + .stratum { border-top: 1px solid var(--ink); }
.stratum-head {
  display: grid;
  grid-template-columns: 1.6rem auto 1fr auto;
  align-items: baseline;
  gap: 0.6rem;
  width: 100%;
  padding: 0.65rem 1rem 0.65rem calc(0.8rem + var(--i) * 0.45rem);
  background: transparent;
  border: none;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
  font: inherit;
}
.st-no { font-family: var(--font-type); font-size: 0.75rem; color: var(--ink-soft); }
.st-name { font-family: var(--font-display); font-size: 1.05rem; letter-spacing: 0.08em; text-transform: uppercase; }
.st-hint { font-size: 0.78rem; font-style: italic; color: var(--ink-soft); }
.st-caret { transition: transform 0.25s ease; }
.stratum.open .st-caret { transform: rotate(180deg); }
.stratum-body { padding: 0.2rem 1rem 0.9rem calc(2.4rem + var(--i) * 0.45rem); }
.climb { margin-top: 1rem; padding: 0.9rem 1rem; border: 1.5px solid var(--ink); background: var(--paper); animation: climb-in 0.5s ease both; }
@keyframes climb-in { from { opacity: 0; transform: translateY(10px); } }
.climb-head { font-family: var(--font-type); font-size: 0.75rem; letter-spacing: 0.22em; text-transform: uppercase; margin: 0 0 0.6rem; }
.climb-metas { display: grid; grid-template-columns: 1fr auto 1fr; gap: 0.7rem; align-items: stretch; margin-bottom: 0.8rem; }
.climb-meta { padding: 0.6rem 0.8rem; border: 1px solid var(--ink-faint); display: grid; align-content: start; }
.climb-meta.alt { border-color: var(--ink); background: var(--panel); }
.cm-text { font-family: var(--font-hand); font-size: 1.3rem; line-height: 1.25; }
.climb-arrow { align-self: center; font-size: 1.3rem; }
.climb-brief { margin: 0; border-style: solid; border-color: var(--ink); }

/* evidence tags */
.lab-evidence { margin-top: 1.2rem; padding-top: 0.8rem; border-top: 1px dashed var(--ink-faint); }
.le-head { font-family: var(--font-type); font-size: 0.7rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--ink-soft); margin: 0 0 0.5rem; }
.le-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.45rem; font-size: 0.82rem; }
.le-list li { display: grid; grid-template-columns: 7.2rem 1fr; gap: 0.6rem; align-items: baseline; }
.le-claim a { color: var(--ink); text-underline-offset: 3px; }
.le-basis { color: var(--ink-soft); }
.badge { font-family: var(--font-type); font-size: 0.66rem; letter-spacing: 0.08em; text-transform: uppercase; text-align: center; padding: 0.1em 0.4em; border: 1px solid var(--ink); }
.badge-sourced { background: var(--ink); color: var(--paper); }
.badge-user-supplied { border-style: double; border-width: 3px; }
.badge-assumption { border-style: dashed; color: var(--ink-soft); border-color: var(--ink-soft); }

/* five briefs, reframed */
.reframe-grid { display: grid; gap: 1.2rem; }
.rf-card { padding: 1.2rem 1.3rem; border: 1.5px solid var(--ink); background: var(--panel); box-shadow: 5px 5px 0 var(--ink-faint); }
.rf-head { display: flex; align-items: baseline; gap: 0.8rem; margin-bottom: 0.7rem; }
.rf-no { font-family: var(--font-type); font-size: 0.75rem; letter-spacing: 0.2em; color: var(--ink-soft); }
.rf-name { font-family: var(--font-display); font-weight: 500; font-size: 1.2rem; letter-spacing: 0.05em; text-transform: uppercase; margin: 0; }
.rf-was { font-size: 0.9rem; color: var(--ink-soft); margin: 0 0 0.5rem; }
.rf-brief { text-decoration: line-through; text-decoration-color: var(--ink-soft); }
.rf-meta { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.4rem 0.8rem; margin: 0 0 0.6rem; font-family: var(--font-hand); font-size: 1.3rem; }
.rf-root { color: var(--ink-soft); }
.rf-now { font-family: var(--font-type); font-size: 0.98rem; line-height: 1.5; margin: 0; padding-top: 0.6rem; border-top: 1px dashed var(--ink-faint); }

@media (max-width: 640px) {
  .path-map { grid-auto-rows: 70px; }
  .pc-facts { grid-template-columns: 1fr; gap: 0.1rem; }
  .pc-facts dd { margin-bottom: 0.5rem; }
  .climb-metas { grid-template-columns: 1fr; }
  .climb-arrow { transform: rotate(90deg); justify-self: center; }
  .le-list li { grid-template-columns: 1fr; gap: 0.2rem; }
  .badge { justify-self: start; }
  .st-hint { display: none; }
}

/* ---------------- evidence ledger ---------------- */
.ledger { list-style: none; margin: 0; padding: 0; max-width: 820px; margin: 0 auto; }
.ledger-item {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 1rem;
  padding: 1rem 0.4rem;
  border-bottom: 1px solid var(--ink-faint);
  align-items: baseline;
}
.ledger-no { font-family: var(--font-display); font-weight: 600; font-size: 1.5rem; color: var(--ink-soft); }
.ledger-body { font-size: 0.92rem; }
.ledger-body strong { letter-spacing: 0.02em; }
.ledger-src { color: var(--ink-soft); }
.ledger-beyond { display: block; margin-top: 0.5rem; color: var(--ink-soft); }
.ledger-beyond strong { color: var(--ink); }
.ledger-links { display: flex; flex-wrap: wrap; gap: 0.4rem 1.1rem; margin-top: 0.6rem; font-size: 0.85rem; }
.ledger-links a { color: var(--ink); text-underline-offset: 3px; }

/* ---------------- chalk wall ---------------- */
.chalk {
  position: relative;
  min-height: 96vh;
  display: grid;
  place-items: center;
  overflow: hidden;
  text-align: center;
  /* the top and bottom bands hold the chalk marks, clear of the form */
  padding: 9.5rem 1.2rem;
  background: var(--wall);
}
#chalk-art, #chalk-art svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.chalk-inner { position: relative; z-index: 2; max-width: 720px; padding: 2.6rem 2.2rem; }
.chalk-mark {
  position: absolute;
  font-family: var(--font-hand);
  font-size: 1.25rem;
  color: var(--chalk);
  white-space: nowrap;
  transform: rotate(var(--tilt, 0deg));
  text-shadow: 0 0 6px rgba(232, 228, 218, 0.25);
  pointer-events: none;
  z-index: 1;
}
/* the study's own marks — the metaphors from the labs, not fake visitors */
.chalk-mark.seed { font-size: 1.45rem; opacity: 0.5; border-bottom: 2px dashed rgba(232, 228, 218, 0.35); padding-bottom: 0.15em; }
.prompt { margin: 1.5rem 0; }
.prompt-q { font-family: var(--font-type); font-size: 1.12rem; color: var(--chalk); margin: 0 0 0.5rem; }
.prompt-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 0.6rem; max-width: 520px; margin: 0 auto; }
@media (max-width: 520px) { .prompt-row { grid-template-columns: 1fr; } }
.prompt input {
  font-family: var(--font-body);
  font-size: 0.92rem;
  padding: 0.55em 1em;
  width: 100%;
  border: 1px solid rgba(232, 228, 218, 0.5);
  border-radius: 0;
  background: rgba(232, 228, 218, 0.08);
  color: var(--chalk);
  outline: none;
}
.prompt input::placeholder { color: rgba(232, 228, 218, 0.5); font-style: italic; }
.prompt input:focus-visible { border-color: var(--chalk); }
.prompt-btn {
  font-family: var(--font-type);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  padding: 0.5em 1.2em;
  border: 1px solid rgba(232, 228, 218, 0.5);
  background: rgba(232, 228, 218, 0.12);
  color: var(--chalk);
  cursor: pointer;
  transition: background 0.3s ease;
}
.prompt-btn:hover { background: rgba(232, 228, 218, 0.26); }

/* ---------------- colophon ---------------- */
#colophon { text-align: center; }
.disclaimer { font-size: 0.85rem; color: var(--ink-soft); max-width: 64ch; margin: 0 auto 1rem; font-style: italic; }
.credit { font-family: var(--font-hand); font-size: 1.35rem; margin: 0 0 1rem; }
.tools { font-size: 0.76rem; color: var(--ink-soft); max-width: 64ch; margin: 0 auto; opacity: 0.9; }
.tools strong { font-family: var(--font-type); }
.made-by { font-family: var(--font-type); font-size: 0.78rem; letter-spacing: 0.06em; color: var(--ink); max-width: 64ch; margin: 0 auto 1rem; }

/* ---------------- what you can do tonight ---------------- */
.levers-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.2rem; }
.lever-card { padding: 1.1rem 1.2rem 1rem; border: 1.5px solid var(--ink); background: var(--panel); box-shadow: 5px 5px 0 var(--ink-faint); }
.lv-head { display: flex; align-items: baseline; gap: 0.7rem; margin-bottom: 0.7rem; }
.lv-no { font-family: var(--font-type); font-size: 0.72rem; letter-spacing: 0.2em; color: var(--ink-soft); }
.lv-name { font-family: var(--font-display); font-weight: 500; font-size: 1.05rem; letter-spacing: 0.05em; text-transform: uppercase; margin: 0; }
.lv-row { display: grid; gap: 0.15rem; margin: 0 0 0.7rem; font-size: 0.9rem; }
.lv-row:last-child { margin-bottom: 0; }
.lv-label { font-family: var(--font-type); font-size: 0.66rem; letter-spacing: 0.24em; text-transform: uppercase; color: var(--ink-soft); }
.lv-morning { padding-left: 0.7rem; border-left: 3px solid var(--ink); }
.lv-night { padding-left: 0.7rem; border-left: 3px dashed var(--ink-soft); }

/* ---------------- dot nav ---------------- */
#dotnav {
  position: fixed;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  display: grid;
  gap: 10px;
  z-index: 60;
}
#dotnav .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1.5px solid var(--ink-soft);
  background: transparent;
  cursor: pointer;
  transition: all 0.3s ease;
  padding: 0;
}
#dotnav .dot:hover { background: var(--ink-soft); }
#dotnav .dot.active { background: var(--ink); border-color: var(--ink); transform: scale(1.3); }

/* ---------------- reveal ---------------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 1s ease var(--d, 0s), transform 1s ease var(--d, 0s); }
.reveal.in { opacity: 1; transform: none; }

/* ---------------- responsive ---------------- */
@media (max-width: 940px) {
  .case, .case:nth-child(even) { grid-template-columns: 1fr; padding-left: 1.1rem; padding-right: 1.1rem; }
  /* story first: name, scene and beats before the dossier on small screens */
  .case .story-col { order: 1; }
  .case .file-col { order: 2; }
  .case:nth-child(even) .file-col { order: 2; }
  .file-col { position: static; }
  #dotnav { display: none; }
  .card:nth-child(odd), .card:nth-child(even) { transform: none; }
}
/* phones: the full-page grain jitter is a repaint the GPU doesn't need */
@media (max-width: 720px) {
  body::after { animation: none; opacity: 0.4; }
}
@media (max-width: 640px) {
  body { font-size: 15.5px; }
  .scene-tag { font-size: 0.75rem; }
  /* keep LIGHTS clear of the story: tuck it into the bottom-right corner */
  #lights {
    top: auto;
    bottom: 14px;
    right: 14px;
    font-size: 0.68rem;
    padding: 0.4em 0.7em;
    box-shadow: 2px 2px 0 var(--ink);
  }
  .hero-lamp { right: 1rem; bottom: 2.4rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  body::after { animation: none; }
  .title { animation: none; }
  .scroll-cue { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .scene-layer { transition: none; }
  #hero-art .fx { transition: none; }
}