/* ---------------------------------------------------------------------------
   Lidar Site Studies — "Quad Sheet"

   The palette is lifted from a USGS quadrangle rather than invented: map paper
   for the ground, contour brown for rules and numerals, vegetation green and
   hydrography blue as the only other chroma. Cut-red appears where the analysis
   produces it and nowhere else.

   Rule of thumb throughout: brown carries interaction and data, black carries
   language, and the maps carry the colour.
   --------------------------------------------------------------------------- */

:root {
  /* Surfaces, lightest to deepest. Elevation is a tint, never a border alone. */
  --paper: #f4f0e6;
  --paper-2: #eae4d5;
  --paper-3: #e2dac6;
  --highlight: #f7ecc9;

  /* Text, in descending importance. */
  --ink: #1c1a15;
  --muted: #5d584a;
  --faint: #6b6555;

  /* Rules. The hairline does most of the structural work on a light ground. */
  --rule: #cdc3ab;
  --rule-2: #b3a68a;

  /* Contour brown is the interaction colour: links, buttons, numerals, focus.
     Headings and body copy stay black so the brown keeps its meaning. */
  --contour: #7a5327;
  --contour-deep: #5e3f1d;

  /* Analysis colours. Only ever used for what they mean on the maps. */
  --cut: #9c4a2f;
  --fill: #2e6e8e;
  --veg: #3f6b45;

  --on-accent: #f9f5ec;
  --scrim: rgba(24, 21, 16, 0.94);

  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --display: "Bitter", Georgia, "Times New Roman", serif;
  --body: "Public Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* The faint grid is the sheet's UTM ticks. It has to stay below the threshold
   where it reads as a texture, or it fights every hairline rule on the page. */
body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    repeating-linear-gradient(0deg, transparent 0 39px, rgba(122, 83, 39, 0.038) 39px 40px),
    repeating-linear-gradient(90deg, transparent 0 39px, rgba(122, 83, 39, 0.038) 39px 40px);
  content: "";
  pointer-events: none;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--contour);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--contour-deep);
  text-decoration-thickness: 2px;
}

:focus-visible {
  outline: 3px solid var(--contour);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 10px 14px;
  transform: translateY(-160%);
  background: var(--contour);
  color: var(--on-accent);
  font-family: var(--mono);
  font-weight: 600;
}

.skip-link:focus {
  transform: translateY(0);
}

.wrap {
  width: min(100%, 1080px);
  margin: 0 auto;
  padding-inline: 28px;
}

.narrow {
  max-width: 760px;
}

/* --- navigation ----------------------------------------------------------- */

.projnav {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--rule);
  background: rgba(244, 240, 230, 0.96);
  backdrop-filter: blur(10px);
}

.projnav .wrap {
  position: relative;
  display: flex;
  min-height: 62px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.projnav .brand {
  color: var(--ink);
  font-family: var(--display);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.005em;
  line-height: 1.05;
  text-decoration: none;
}

.projnav .links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.projnav .links a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  border-bottom: 2px solid transparent;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12.5px;
  text-decoration: none;
}

.projnav .links a:hover {
  color: var(--ink);
  border-bottom-color: var(--rule-2);
}

/* The current page is marked, not filled — a filled chip on paper reads as a
   button and invites a click the reader has already made. */
.projnav .links a.on {
  color: var(--ink);
  border-bottom-color: var(--contour);
  font-weight: 500;
}

.projnav .links .nav-cta {
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid var(--contour);
  color: var(--contour);
}

.projnav .links .nav-cta:hover {
  background: var(--contour);
  color: var(--on-accent);
}

.nav-toggle {
  display: none;
  min-width: 44px;
  min-height: 44px;
  border: 1px solid var(--rule-2);
  background: transparent;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 13px;
  cursor: pointer;
}

/* --- type ----------------------------------------------------------------- */

header,
.hero {
  position: relative;
  padding: 76px 0 58px;
}

.site-home .hero {
  padding: 88px 0 64px;
}

/* Labels sit quietly above their heading. They are wayfinding, not accent. */
.kicker,
.eyebrow {
  color: var(--faint);
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2 {
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: -0.005em;
  line-height: 1.14;
  text-wrap: balance;
}

/* h3 stays in the body face. Card titles in the display face were competing
   with page titles and flattening the hierarchy. */
h3 {
  font-family: var(--body);
  font-weight: 600;
  line-height: 1.3;
}

h1 {
  /* Headlines set their own breaks with <br>; this is a safety net only, so it
     has to clear the longest authored line or it re-wraps and orphans a word. */
  max-width: 26ch;
  margin: 16px 0 22px;
  font-size: clamp(34px, 4.6vw, 55px);
}

/* Must clear the longest authored line ("A camera sees treetops.", 23ch) or
   the safety net re-wraps the headline and orphans a word. */
.site-home h1 {
  max-width: 25ch;
  font-size: clamp(37px, 5.2vw, 62px);
}

h1 .under,
h1 span,
.accent {
  color: var(--contour);
}

h2 {
  margin: 12px 0 16px;
  max-width: 26ch;
  font-size: clamp(24px, 2.8vw, 33px);
}

h3 {
  margin-bottom: 9px;
  font-size: 18px;
}

.lede {
  max-width: 58ch;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.5;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 19px;
  border: 1px solid var(--contour);
  background: var(--contour);
  color: var(--on-accent);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.button.secondary {
  background: transparent;
  border-color: var(--rule-2);
  color: var(--ink);
}

.button:hover {
  background: var(--contour-deep);
  border-color: var(--contour-deep);
  color: var(--on-accent);
  transform: translateY(-1px);
}

.button.secondary:hover {
  border-color: var(--contour);
  background: transparent;
  color: var(--contour);
}

/* --- notes and qualifiers ------------------------------------------------- */

.status-note,
.scope-note {
  max-width: 80ch;
  margin-top: 24px;
  padding: 15px 18px;
  border-left: 3px solid var(--rule-2);
  background: var(--paper-3);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.65;
}

.status-note strong,
.scope-note strong {
  color: var(--ink);
  font-weight: 600;
}

/* --- headline numbers ----------------------------------------------------- */

.bignum {
  margin: 32px 0 8px;
}

section .bignum {
  margin-top: 24px;
  color: var(--contour);
  font-family: var(--mono);
  font-size: clamp(40px, 7vw, 84px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.bignum small {
  display: block;
  max-width: 62ch;
  margin-top: 12px;
  color: var(--muted);
  font-family: var(--body);
  font-size: clamp(15px, 2vw, 18px);
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1.55;
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(205px, 1fr));
  margin-top: 44px;
  border-top: 1px solid var(--rule-2);
  border-left: 1px solid var(--rule);
}

.stat {
  padding: 20px 18px;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.stat .v {
  color: var(--ink);
  font-family: var(--mono);
  font-size: 24px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.stat .l {
  margin-top: 5px;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.5;
}

.stat.hot {
  background: var(--highlight);
}

.stat.hot .v {
  color: var(--contour);
}

/* --- sections ------------------------------------------------------------- */

section {
  padding: 68px 0;
}

/* Two tinted variants exist for historical reasons and are deliberately the
   same surface: alternating tint is the only rhythm this page needs. */
section.paper,
section.raised {
  background: var(--paper-2);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

section.paper + section.raised,
section.raised + section.paper,
section.raised + section.raised,
section.paper + section.paper {
  border-top: 0;
}

section.paper .status-note,
section.raised .status-note,
section.paper .scope-note,
section.raised .scope-note {
  background: var(--paper-3);
}

.section-intro {
  max-width: 64ch;
  color: var(--muted);
  font-size: 16.5px;
}

/* On the homepage the swipe is an explainer, not the main subject — keep it
   inside one screen so the studies below stay discoverable. */
#proof .swipe {
  max-width: 880px;
  margin-inline: auto;
}

.proof-caption {
  max-width: 68ch;
  margin-top: 16px;
  color: var(--muted);
  font-size: 15px;
}

.proof-caption a {
  font-weight: 500;
  white-space: nowrap;
}

.prose {
  max-width: 68ch;
  font-size: 16.5px;
}

.prose + .prose {
  margin-top: 16px;
}

/* --- panel grids ---------------------------------------------------------- */

.grid-3,
.service-grid,
.boundary-grid,
.scope-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 32px;
}

.scope-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.panel,
.service,
.boundary {
  padding: 24px;
  border: 1px solid var(--rule);
  background: var(--paper-2);
}

section.paper .panel,
section.raised .panel,
section.paper .service,
section.raised .service,
section.paper .boundary,
section.raised .boundary {
  background: var(--paper);
}

.panel p,
.service p,
.boundary p {
  color: var(--muted);
  font-size: 15px;
}

/* Numbering is only used where the content genuinely is a sequence. */
.service .num {
  display: block;
  margin-bottom: 14px;
  color: var(--contour);
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

/* A scope column is a claim about what the work is, so the rule above it is
   coloured by the claim: blue for what it covers, red for what it does not. */
.scope-col {
  padding: 22px 22px 24px;
  border-top: 2px solid var(--rule-2);
  background: var(--paper);
}

section:not(.paper):not(.raised) .scope-col {
  background: var(--paper-2);
}

.scope-col.yes {
  border-top-color: var(--fill);
}

.scope-col.no {
  border-top-color: var(--cut);
}

.scope-col h3 {
  font-size: 15px;
}

.scope-col ul {
  margin-top: 12px;
  list-style: none;
  color: var(--muted);
  font-size: 15px;
}

.scope-col li {
  position: relative;
  padding: 6px 0 6px 18px;
}

.scope-col li::before {
  position: absolute;
  left: 0;
  color: var(--rule-2);
  content: "\2014";
}

/* --- study cards ---------------------------------------------------------- */

.case-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-top: 36px;
}

.card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--rule);
  background: var(--paper-2);
  color: var(--ink);
  text-decoration: none;
  transition: border-color 0.2s, transform 0.2s;
}

.card:hover {
  transform: translateY(-3px);
  border-color: var(--contour);
}

/* The four hillshades read as near-identical grey at thumbnail size, so the
   numeral — not the image — is what makes a card recognisable at a glance. */
.card .thumb {
  position: relative;
}

.card img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-bottom: 1px solid var(--rule);
  object-fit: cover;
}

.card .plate {
  position: absolute;
  bottom: -1px;
  left: 0;
  padding: 5px 14px 4px;
  background: var(--paper-2);
  border-top: 1px solid var(--rule);
  border-right: 1px solid var(--rule);
  color: var(--contour);
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
}

.card .body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 20px 20px 22px;
}

.card .num {
  color: var(--faint);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.card h3 {
  margin: 9px 0 8px;
  font-family: var(--display);
  font-size: 22px;
  font-weight: 700;
}

.card p {
  color: var(--muted);
  font-size: 15px;
}

.card .statline {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.55;
}

.card .statline b {
  color: var(--ink);
  font-weight: 600;
}

.card .go {
  margin-top: 14px;
  color: var(--contour);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
}

.card:hover .go {
  text-decoration: underline;
}

/* --- figures -------------------------------------------------------------- */

figure {
  margin-top: 32px;
}

figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--rule-2);
}

figure img[data-lightbox] {
  cursor: zoom-in;
}

figcaption {
  max-width: 78ch;
  padding: 10px 2px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

figcaption b {
  color: var(--ink);
  font-weight: 600;
}

.locus {
  display: block;
  width: min(100%, 300px);
  margin-top: 26px;
  border: 1px solid var(--rule-2);
}

.moat {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
  margin-top: 34px;
}

.moat figure {
  margin: 0;
}

/* --- swipe comparison ----------------------------------------------------- */

.swipe {
  position: relative;
  overflow: hidden;
  aspect-ratio: 5 / 4;
  margin-top: 34px;
  border: 1px solid var(--rule-2);
  cursor: ew-resize;
  touch-action: pan-y;
  user-select: none;
}

.swipe .stage {
  position: absolute;
  inset: 0;
}

.swipe .stage > img,
.swipe .top img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: var(--focus, 50% 50%);
  pointer-events: none;
}

.swipe .top {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

/* Paper-coloured, not brown: the divider sits on greyscale hillshade and needs
   to separate two near-identical images, which luminance does and hue doesn't. */
.swipe .bar {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--paper);
  box-shadow: 0 0 0 1px rgba(24, 21, 16, 0.45);
  pointer-events: none;
}

.swipe .bar::after {
  position: absolute;
  top: 50%;
  left: 50%;
  padding: 9px 11px;
  transform: translate(-50%, -50%);
  border-radius: 2px;
  background: var(--paper);
  box-shadow: 0 1px 4px rgba(24, 21, 16, 0.4);
  color: var(--ink);
  content: "\25C2 \25B8";
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
}

.tag {
  position: absolute;
  top: 12px;
  padding: 5px 10px;
  background: rgba(24, 21, 16, 0.82);
  color: var(--on-accent);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  pointer-events: none;
}

.tag.left { left: 12px; }

.tag.right {
  right: 12px;
  background: rgba(122, 83, 39, 0.92);
  color: var(--on-accent);
}

.fsbtn {
  position: absolute;
  right: 12px;
  bottom: 12px;
  z-index: 5;
  min-width: 46px;
  min-height: 46px;
  border: 1px solid rgba(249, 245, 236, 0.5);
  background: rgba(24, 21, 16, 0.86);
  color: var(--on-accent);
  font-family: var(--mono);
  font-size: 18px;
  cursor: pointer;
}

.swipe.fs {
  position: fixed;
  inset: 0;
  z-index: 98;
  height: 100dvh;
  margin: 0;
  border: 0;
  background: #14120e;
}

/* --- corridor map --------------------------------------------------------- */

.site-picks {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}

.site-picks button {
  min-height: 40px;
  padding: 0 12px;
  border: 1px solid var(--rule-2);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 12px;
  cursor: pointer;
}

.site-picks button:hover {
  border-color: var(--contour);
}

.site-picks button.on,
.rank-card.on {
  border-color: var(--contour);
  background: var(--highlight);
}

.map-swipe {
  position: relative;
  overflow: hidden;
  aspect-ratio: 5 / 4;
  margin-top: 22px;
  border: 1px solid var(--rule-2);
  background: #241f18;
}

.map-swipe.fs {
  position: fixed;
  inset: 0;
  z-index: 98;
  height: 100dvh;
  margin: 0;
  border: 0;
  aspect-ratio: auto;
  background: #14120e;
}

.map-swipe .p04-map,
.map-swipe .map-fallback {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.map-swipe .map-fallback {
  object-fit: cover;
}

.map-swipe .p04-map {
  z-index: 1;
}

.map-swipe .tag,
.map-swipe .fsbtn {
  z-index: 7;
}

.map-swipe .bar {
  position: absolute;
  top: 0;
  bottom: 0;
  z-index: 6;
  width: 2px;
  background: var(--paper);
  box-shadow: 0 0 0 1px rgba(24, 21, 16, 0.45);
  cursor: ew-resize;
  touch-action: none;
}

.map-swipe .bar::before {
  position: absolute;
  inset: 0 -16px;
  content: "";
}

.map-swipe .bar::after {
  position: absolute;
  top: 50%;
  left: 50%;
  padding: 9px 11px;
  transform: translate(-50%, -50%);
  border-radius: 2px;
  background: var(--paper);
  box-shadow: 0 1px 4px rgba(24, 21, 16, 0.4);
  color: var(--ink);
  content: "\25C2 \25B8";
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  pointer-events: none;
}

.map-swipe .leaflet-container {
  font-family: var(--body);
  background: #241f18;
}

.map-swipe .leaflet-top {
  top: 46px;
}

.map-swipe .leaflet-control-attribution {
  max-width: min(100%, 52ch);
  background: rgba(24, 21, 16, 0.82);
  color: #ddd5c4;
  font-family: var(--mono);
  font-size: 10px;
}

.map-swipe .leaflet-control-attribution a {
  color: #e8b66a;
}

.map-status {
  margin-top: 12px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 13px;
}

.fail-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  margin-top: 16px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 13px;
}

.fail-jump select {
  min-height: 40px;
  min-width: min(100%, 280px);
  padding: 0 10px;
  border: 1px solid var(--rule-2);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 13px;
}

.fail-card {
  cursor: pointer;
}

.fail-card img {
  display: block;
  width: 100%;
  border: 1px solid var(--rule-2);
}

.fail-card h3 {
  margin-top: 12px;
  font-size: 18px;
}

.fail-card p {
  margin-top: 8px;
  color: var(--muted);
}

tr[data-p04-id] {
  cursor: pointer;
}

/* --- tables --------------------------------------------------------------- */

.tablewrap {
  max-width: 100%;
  margin-top: 28px;
  overflow-x: auto;
  border: 1px solid transparent;
}

.tablewrap:focus-visible {
  border-color: var(--contour);
}

table {
  width: 100%;
  min-width: 580px;
  border-collapse: collapse;
  font-size: 15px;
  font-variant-numeric: tabular-nums;
}

caption {
  padding: 0 0 12px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12.5px;
  text-align: left;
}

th,
td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--rule);
  text-align: right;
}

th:first-child,
td:first-child {
  text-align: left;
}

thead th {
  border-bottom: 1px solid var(--rule-2);
  color: var(--faint);
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

td {
  font-family: var(--mono);
}

tbody tr:last-child td {
  border-bottom: 1px solid var(--rule-2);
}

/* The row that carries the finding, and the row that carries the error. */
tr.ours td {
  background: var(--highlight);
  color: var(--ink);
  font-weight: 600;
}

tr.delta td {
  color: var(--cut);
  font-weight: 600;
}

.table-foot {
  max-width: 82ch;
  margin-top: 14px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.6;
}

/* --- corridor ranking ----------------------------------------------------- */

.ranking-cards {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  margin-top: 28px;
}

.rank-card {
  padding: 18px;
  border: 1px solid var(--rule);
  background: var(--paper);
}

.rank-card:first-child {
  background: var(--highlight);
}

.rank-card img {
  display: block;
  width: 100%;
  height: 88px;
  margin-bottom: 12px;
  border: 1px solid var(--rule-2);
  object-fit: cover;
}

.rank-card .rank {
  color: var(--contour);
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.rank-card h3 {
  margin: 10px 0 6px;
  font-size: 16px;
}

.rank-card p {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
}

.rank-card strong,
.rank-card span {
  display: block;
}

.rank-card strong {
  margin-top: 14px;
  color: var(--ink);
  font-family: var(--display);
  font-size: 18px;
  font-weight: 700;
}

.rank-card span {
  margin-top: 5px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.45;
}

.full-ranking {
  margin-top: 24px;
}

.full-ranking > summary {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  padding: 0 16px;
  border: 1px solid var(--rule-2);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
}

.full-ranking > summary:hover {
  border-color: var(--contour);
  color: var(--contour);
}

/* --- method lists --------------------------------------------------------- */

ol.method {
  max-width: 70ch;
  margin: 24px 0 0 20px;
  font-size: 16px;
}

ol.method li {
  margin-bottom: 14px;
  padding-left: 6px;
}

ol.method li::marker {
  color: var(--contour);
  font-family: var(--mono);
  font-size: 14px;
}

ol.method b {
  font-family: var(--mono);
  font-size: 15px;
}

.note {
  max-width: 74ch;
  margin-top: 26px;
  padding: 12px 16px;
  border-left: 3px solid var(--rule-2);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.7;
}

.citation-list {
  display: grid;
  gap: 18px;
  max-width: 80ch;
  margin-top: 28px;
}

.citation-list li {
  margin-left: 20px;
  padding-left: 4px;
}

/* --- footer --------------------------------------------------------------- */

footer {
  padding: 62px 0 80px;
  border-top: 1px solid var(--rule-2);
  background: var(--paper-2);
}

/* Like h1, this is a safety net, not the break: the lines are authored with
   <br>. It has to clear the longest of them ("The newest free lidar here was
   flown in 2021.", 45ch) or it re-wraps and orphans a word. */
footer .cta {
  max-width: 46ch;
  font-family: var(--display);
  font-size: clamp(25px, 3.4vw, 37px);
  font-weight: 700;
  letter-spacing: -0.005em;
  line-height: 1.16;
}

footer .cta span {
  color: var(--contour);
}

footer .contact,
.footer-meta {
  max-width: 82ch;
  margin-top: 22px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.65;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 18px;
  font-family: var(--mono);
  font-size: 12.5px;
}

/* --- lightbox ------------------------------------------------------------- */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  padding: 56px 12px 16px;
  align-items: center;
  justify-content: center;
  background: var(--scrim);
}

.lightbox.open {
  display: flex;
}

.lightbox-inner {
  display: flex;
  width: 100%;
  height: 100%;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

/* The stage owns the gestures. Putting touch-action on the image instead means the
   browser swallows the pinch before the handler sees it, which is what previously
   left these maps stuck at fit-to-screen on a phone. */
.lb-stage {
  position: relative;
  display: flex;
  overflow: hidden;
  width: 100%;
  min-height: 0;
  flex: 1;
  align-items: center;
  justify-content: center;
  touch-action: none;
  cursor: zoom-in;
}

.lb-stage.zoomed {
  cursor: grab;
}

.lb-stage.zoomed:active {
  cursor: grabbing;
}

.lightbox img {
  max-width: 100%;
  max-height: 100%;
  border: 1px solid rgba(249, 245, 236, 0.25);
  object-fit: contain;
  transform-origin: center center;
  transition: transform 0.12s ease-out;
  will-change: transform;
  user-select: none;
  -webkit-user-drag: none;
}

.lb-bar {
  display: flex;
  gap: 8px;
  align-items: center;
  flex: 0 0 auto;
}

.lb-bar button {
  min-width: 44px;
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid rgba(249, 245, 236, 0.35);
  background: transparent;
  color: var(--on-accent);
  font-family: var(--mono);
  font-size: 15px;
  cursor: pointer;
}

.lb-bar button:hover {
  border-color: var(--on-accent);
}

.lb-level {
  min-width: 5ch;
  color: #ddd5c4;
  font-family: var(--mono);
  font-size: 13px;
  text-align: center;
}

.lightbox .cap {
  max-width: 88ch;
  color: #ddd5c4;
  font-family: var(--mono);
  font-size: 13px;
  text-align: center;
}

.lightbox-close {
  position: absolute;
  top: 12px;
  right: 12px;
  min-width: 48px;
  min-height: 48px;
  border: 1px solid rgba(249, 245, 236, 0.35);
  background: transparent;
  color: var(--on-accent);
  font-size: 20px;
  cursor: pointer;
}

/* --- responsive ----------------------------------------------------------- */

@media (max-width: 900px) {
  .grid-3,
  .service-grid,
  .boundary-grid,
  .scope-grid {
    grid-template-columns: 1fr;
  }

  .ranking-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .wrap {
    padding-inline: 20px;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .projnav .links {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    display: none;
    padding: 10px 20px 18px;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    border-bottom: 1px solid var(--rule);
    background: var(--paper);
  }

  .projnav .links.open {
    display: flex;
  }

  .projnav .links a {
    min-height: 46px;
    border-bottom: 1px solid var(--rule);
  }

  .projnav .links a.on {
    border-bottom-color: var(--contour);
  }

  .projnav .links .nav-cta {
    justify-content: center;
    margin-top: 10px;
    border: 1px solid var(--contour);
  }

  header,
  .hero,
  .site-home .hero {
    padding: 52px 0 44px;
  }

  h1,
  .site-home h1 {
    max-width: 100%;
    font-size: clamp(32px, 9vw, 44px);
  }

  h2 {
    font-size: clamp(25px, 7vw, 31px);
  }

  .lede {
    font-size: 17px;
  }

  section {
    padding: 52px 0;
  }

  .case-grid {
    grid-template-columns: 1fr;
  }

  .card h3 {
    font-size: 20px;
  }

  section .bignum {
    font-size: clamp(38px, 13vw, 58px);
  }

  .swipe,
  .map-swipe {
    height: min(62vh, 520px);
    aspect-ratio: auto;
  }

  .map-swipe.fs,
  .swipe.fs {
    height: 100dvh;
  }

  .tag {
    max-width: 45%;
    font-size: 10px;
    letter-spacing: 0.06em;
  }

  .tablewrap::before {
    display: block;
    position: sticky;
    left: 0;
    width: max-content;
    margin: 0 0 10px;
    color: var(--faint);
    content: attr(data-scroll-hint);
    font-family: var(--mono);
    font-size: 11px;
  }

  .ranking-cards {
    grid-template-columns: 1fr;
  }

  .locus {
    width: min(100%, 210px);
  }

  footer {
    padding: 52px 0 64px;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }

  .lightbox img {
    transition: none !important;
  }
}