/* GPSCS site stylesheet
 * Dark, industrial-technology system: deep black-navy grounds, warm gold accent,
 * steel and graphite neutrals, restrained construction orange for emphasis.
 * Single visual world by design; every color is set explicitly.
 */

/* ---- tokens ------------------------------------------------------------- */
:root {
  color-scheme: dark;
  --ink-0: #06090E;
  --ink-1: #0B1119;
  --ink-2: #111A25;
  --ink-3: #182331;
  --ink-4: #1F2D3D;
  --line: #22303F;
  --line-strong: #33465B;
  --text: #EDF1F5;
  --text-2: #A7B3C0;
  --text-3: #6E7D8C;
  --gold: #D8A64A;
  --gold-2: #F0C36B;
  --gold-dim: rgba(216, 166, 74, .14);
  --gold-line: rgba(216, 166, 74, .38);
  --orange: #F07A22;
  --orange-2: #FFB27A;
  --steel: #8FB0D0;
  --steel-2: #5C9BD6;
  --teal: #1E9478;
  --ok: #5CB97A;
  --ok-2: #8FD4A6;
  --warn: #E8B23A;
  --warn-2: #F0C76B;
  --crit: #E25A4A;
  --font-display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --font-body: "IBM Plex Sans", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --wrap: 1240px;
  --gutter: clamp(16px, 4vw, 40px);
  --radius: 6px;
  --radius-lg: 12px;
  --shadow: 0 24px 70px rgba(0, 0, 0, .45);
}

/* ---- base --------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background-color: var(--ink-0);
  background-image:
    linear-gradient(rgba(143, 176, 208, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(143, 176, 208, .045) 1px, transparent 1px);
  background-size: 80px 80px;
  color: var(--text);
  font: 400 17px/1.6 var(--font-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg, canvas { max-width: 100%; }
a { color: var(--gold-2); }
h1, h2, h3, h4 { font-family: var(--font-display); color: var(--text); margin: 0; text-wrap: balance; }
h2 { font-size: clamp(30px, 3.6vw, 48px); line-height: 1.08; font-weight: 700; font-stretch: 106%; letter-spacing: -.02em; }
h3 { font-size: 20px; line-height: 1.3; font-weight: 600; font-stretch: 104%; }
p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }
:focus-visible { outline: 2px solid var(--gold-2); outline-offset: 3px; }
button { font-family: inherit; }
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip { position: absolute; left: 12px; top: -60px; z-index: 100; background: var(--gold); color: #0B0E12; padding: 10px 14px; border-radius: 4px; font-weight: 600; text-decoration: none; }
.skip:focus { top: 12px; }
.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }
.eyebrow { display: flex; align-items: center; gap: 12px; margin: 0; font: 500 12px/1 var(--font-mono); letter-spacing: .16em; text-transform: uppercase; color: var(--gold); }
.eyebrow::before { content: ""; width: 22px; height: 1px; background: var(--gold); flex: none; }
.mono-label { margin: 0; font: 500 11px/1 var(--font-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--text-3); }
.lead { font-size: clamp(17px, 1.25vw, 19px); line-height: 1.6; color: var(--text-2); max-width: 64ch; }
.muted { color: var(--text-3); font-size: 13.5px; }
.placeholder { font-family: var(--font-mono); font-size: .92em; color: var(--orange-2); border-bottom: 1px dashed rgba(240, 122, 34, .55); }

/* ---- buttons ------------------------------------------------------------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; padding: .9rem 1.4rem; border-radius: var(--radius); font: 600 15px/1 var(--font-body); text-decoration: none; border: 1px solid transparent; cursor: pointer; transition: transform .18s ease, background-color .18s, border-color .18s, color .18s; white-space: nowrap; }
.btn--primary { background: var(--gold); color: #0B0E12; }
.btn--primary:hover { background: var(--gold-2); transform: translateY(-1px); }
.btn--ghost { background: transparent; border-color: var(--line-strong); color: var(--text); }
.btn--ghost:hover { border-color: var(--gold); color: var(--gold-2); }
.btn--text { background: transparent; color: var(--text-2); padding-inline: .6rem; }
.btn--text:hover { color: var(--text); }
.btn--sm { padding: .62rem 1rem; font-size: 13px; }
.btn:disabled { opacity: .45; cursor: default; transform: none; }

.badge { display: inline-flex; align-items: center; gap: 6px; font: 500 11px/1.2 var(--font-mono); letter-spacing: .06em; text-transform: uppercase; padding: 5px 8px; border-radius: 3px; border: 1px solid var(--line); color: var(--text-2); width: max-content; max-width: 100%; }
.badge--core { border-color: rgba(92, 185, 122, .45); color: var(--ok-2); }
.badge--quote { border-color: rgba(240, 122, 34, .55); color: var(--orange-2); }
.badge--pilot { border-color: rgba(143, 176, 208, .5); color: var(--steel); }
.badge--research { border-color: var(--gold-line); color: var(--gold-2); }
.badge--muted { color: var(--text-3); }

/* ---- header --------------------------------------------------------------- */
.site-header { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50; background: rgba(6, 9, 14, .72); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid transparent; transition: border-color .2s, background-color .2s; }
.site-header.is-scrolled { border-bottom-color: var(--line); background: rgba(6, 9, 14, .9); }
.site-header__in { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 70px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--text); text-decoration: none; }
/* The supplied logo file is used as-is: height only, width auto, no filters. */
.brand__logo { display: block; flex: none; width: auto; height: 42px; }
.site-nav { display: flex; align-items: center; gap: 2px; }
.site-nav a:not(.btn) { padding: 10px 12px; color: var(--text-2); font: 500 14px/1 var(--font-body); text-decoration: none; border-radius: 4px; transition: color .15s; }
.site-nav a:not(.btn):hover { color: var(--text); }
.site-nav a.is-active { color: var(--gold-2); }
.site-nav .btn { margin-left: 14px; }
.nav-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--line); background: transparent; border-radius: 6px; flex-direction: column; align-items: center; justify-content: center; gap: 5px; cursor: pointer; }
.nav-toggle span:not(.sr-only) { display: block; width: 20px; height: 2px; background: var(--text); transition: transform .2s, opacity .2s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
@media (max-width: 900px) {
  .nav-toggle { display: flex; }
  .site-nav { position: fixed; left: 0; right: 0; top: calc(70px + env(safe-area-inset-top, 0px)); flex-direction: column; align-items: stretch; background: var(--ink-1); border-bottom: 1px solid var(--line); padding: 12px var(--gutter) 20px; transform: translateY(-8px); opacity: 0; visibility: hidden; pointer-events: none; transition: transform .2s, opacity .2s; }
  .site-nav.is-open { transform: none; opacity: 1; visibility: visible; pointer-events: auto; }
  .site-nav a:not(.btn) { padding: 14px 8px; font-size: 16px; border-bottom: 1px solid var(--line); border-radius: 0; }
  .site-nav .btn { margin: 14px 0 0; }
}
@media (max-width: 560px) { .brand__logo { height: 34px; } }

/* ---- hero: a framed, interactive scan -------------------------------------- */
.hero { position:relative; isolation:isolate; border-bottom:1px solid var(--line); background:radial-gradient(ellipse at 74% 33%,var(--ink-2),transparent 57%); padding:48px 0 32px; }
.hero__main { display:grid; grid-template-columns:minmax(0,.82fr) minmax(0,1.18fr); gap:28px; align-items:center; }
.hero__in { position:relative; padding:24px 0; }
.hero__title { margin:24px 0; font-size:clamp(52px,6.2vw,90px); line-height:.98; font-weight:700; letter-spacing:-.04em; }
.hero__lead { max-width:42ch; font-size:clamp(16px,1.3vw,19px); line-height:1.65; color:var(--text-2); margin:0; }
.hero__cta { display:flex; flex-wrap:wrap; align-items:center; gap:12px; margin-top:28px; }
.hero__support { margin:24px 0 0; color:var(--steel); font:400 12px/1.6 var(--font-mono); }
.hero__visual { min-width:0; position:relative; height:560px; border:1px solid var(--line); border-radius:var(--radius-lg); overflow:hidden; background:radial-gradient(ellipse at 50% 52%,var(--ink-3),var(--ink-0) 80%); }
.hero__visual::after { content:""; position:absolute; inset:10px; border:1px solid rgba(143,176,208,.1); border-radius:4px; pointer-events:none; }
/* C7: poster and canvas share one cell of the frame, so the poster can be painted
   first and hidden on the renderer's first frame without either box moving. */
.hero__canvas, .hero__fallback { display:block; position:absolute; inset:0; width:100%; height:100%; object-fit:cover; touch-action:pan-y; cursor:grab; outline-offset:-4px; }
.hero__canvas:active { cursor:grabbing; }
/* C5: the dip must mask the swap, not follow it. Adding the class snaps the canvas
   to 45% in the same paint that first shows the new mode; removing it 300 ms later
   falls back to the transition above, so the new view fades in. */
.hero__canvas, .quarry__canvas { transition:opacity .3s; }
.hero__canvas.is-swapping, .quarry__canvas.is-swapping { opacity:.45; transition:none; }
@media (prefers-reduced-motion: reduce) { .hero__canvas, .quarry__canvas { transition:none; } }
.hero__provenance { position:absolute; z-index:3; top:23px; left:22px; display:flex; align-items:center; gap:9px; color:var(--text-2); background:rgba(6,9,14,.8); padding:7px 9px; border-radius:3px; font:400 11px/1.5 var(--font-mono); letter-spacing:.02em; pointer-events:none; }
.hero__view-index { position:absolute; z-index:3; top:28px; right:24px; font:500 11px/1.4 var(--font-mono); color:var(--gold-2); }
.hero__demo-tag { position:absolute; top:91px; left:24px; right:24px; z-index:3; width:fit-content; padding:6px 8px; background:var(--ink-1); border:1px solid var(--gold-line); color:var(--gold-2); font:400 11px/1.5 var(--font-mono); pointer-events:none; }
.hero__scan-readout { position:absolute; z-index:3; bottom:28px; left:24px; right:156px; display:flex; flex-direction:column; gap:5px; pointer-events:none; }
.hero__scan-readout strong { color:var(--text); font:500 12px/1.4 var(--font-mono); }
.hero__scan-readout span { color:var(--text-2); font:400 11px/1.5 var(--font-mono); }
.hero__camera { position:absolute; bottom:26px; right:22px; z-index:4; display:flex; gap:5px; }
.hero__camera button { width:36px; height:38px; border:1px solid var(--line-strong); background:var(--ink-1); border-radius:4px; color:var(--text); font:400 20px var(--font-body); cursor:pointer; }
.hero__camera button:hover { border-color:var(--gold); color:var(--gold-2); }
.hero__orbit-hint { position:absolute; right:24px; bottom:77px; color:var(--text-2); font:400 11px/1 var(--font-mono); letter-spacing:.08em; pointer-events:none; }
.hero__layers-wrap { padding-top:24px; }
.hero__layers-head { display:flex; justify-content:space-between; align-items:center; gap:12px; margin-bottom:12px; }
.hero__layers-head .mono-label { color:var(--text-2); letter-spacing:.1em; }
.hero__tour { border:0; padding:8px 0 8px 12px; font:500 12px/1.4 var(--font-mono); color:var(--text-2); background:none; cursor:pointer; }
.hero__tour:hover:not(:disabled) { color:var(--gold-2); }
.hero__tour:disabled { color:var(--text-3); cursor:default; }
.hero__layers { display:grid; grid-template-columns:repeat(6,minmax(0,1fr)); gap:8px; }
.layer-chip { position:relative; display:flex; align-items:center; gap:10px; overflow:hidden; border:1px solid var(--line); background:var(--ink-1); color:var(--text-2); border-radius:5px; padding:15px 12px; cursor:pointer; text-align:left; transition:background .15s,border-color .15s,color .15s; }
.layer-chip__number { color:var(--text-3); font:400 11px/1 var(--font-mono); }
.layer-chip__label { font:500 13px/1.25 var(--font-body); white-space:nowrap; }
.layer-chip:hover { border-color:var(--line-strong); color:var(--text); }
.layer-chip.is-active { border-color:var(--gold-line); background:var(--gold-dim); color:var(--gold-2); }
.layer-chip.is-active .layer-chip__number { color:var(--gold); }
.layer-chip::before { content:""; position:absolute; left:0; bottom:0; height:2px; width:0; background:var(--gold); }
/* C6: js/quarry-scene.js publishes its cycle constant as --quarry-cycle. */
.hero[data-tour="playing"] .layer-chip.is-active::before { animation:hero-layer-progress var(--quarry-cycle,8.5s) linear forwards; }
.hero[data-tour="paused"] .layer-chip.is-active::before { width:100%; }
@keyframes hero-layer-progress { to { width:100%; } }
.hero__model-caption { display:grid; grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr); gap:26px; padding:24px 0 12px; }
.hero__model-caption > div { display:flex; flex-direction:column; gap:8px; }
.hero__model-caption [data-hero-category] { color:var(--gold); font:500 11px/1.3 var(--font-mono); letter-spacing:.1em; }
.hero__model-caption strong { font:600 19px/1.35 var(--font-display); }
.hero__model-caption p { color:var(--text-2); font-size:14px; line-height:1.65; margin:0; }
.hero__legend { display:flex; flex-wrap:wrap; gap:9px 22px; padding:8px 0; min-height:33px; color:var(--text-2); font:400 11px/1.5 var(--font-mono); }
.hero__legend span { display:inline-flex; align-items:center; gap:8px; }
.hero__legend i { width:8px; height:8px; display:inline-block; border-radius:50%; background:var(--steel); }
.hero__source { margin:12px 0 0; color:var(--text-2); font:400 11px/1.65 var(--font-mono); }
.hero.quarry-static .hero__camera, .hero.quarry-static .hero__orbit-hint, .hero.quarry-static .hero__scan-readout { display:none; }
.hero.quarry-static .hero__canvas { display:none; }
@media(max-width:1100px) {
  .hero__main { grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr); gap:20px; }
  .hero__visual { height:500px; }
  .hero__title { font-size:clamp(54px,7vw,76px); }
  .layer-chip { padding:14px 9px; gap:7px; }
}
/* Below 1025px the hero is one column: copy, then the frame, then the layer
   controls. Copy and canvas are separate grid items at every width, so copy is
   never set over the terrain. */
@media(max-width:1024px) {
  .hero { padding-top:24px; }
  .hero__main { grid-template-columns:minmax(0,1fr); gap:12px; }
  .hero__in { padding:20px 0; }
  .hero__title { font-size:64px; }
  .hero__title br { display:none; }
  .hero__lead { max-width:64ch; }
  .hero__visual { height:420px; }
}
/* The six chips stay a wrapping-free grid while one row still fits them, and
   become a scrolling strip below that. */
@media(max-width:900px) {
  .hero__layers { display:flex; overflow-x:auto; scrollbar-width:thin; padding-bottom:4px; }
  .layer-chip { flex:0 0 144px; }
  /* The chip strip clips an outside focus ring once it scrolls. */
  .layer-chip:focus-visible { outline-offset:-3px; }
  .hero__model-caption { grid-template-columns:minmax(0,1fr); gap:12px; padding-top:20px; }
}
@media(max-width:560px) {
  .hero__title { font-size:56px; max-width:330px; }
  .hero__title br { display:block; }
  .hero__visual { height:390px; }
  .hero__provenance { left:14px; top:17px; font-size:11px; max-width:calc(100% - 96px); }
  .hero__view-index { right:17px; top:24px; }
  .hero__demo-tag { left:15px; right:15px; top:82px; font-size:11px; }
  .hero__scan-readout { left:17px; right:16px; bottom:77px; }
  .hero__scan-readout strong { font-size:11px; }
  .hero__camera { right:16px; bottom:18px; }
  .hero__orbit-hint { left:18px; bottom:32px; right:auto; font-size:11px; }
  .hero__layers-wrap { padding-top:18px; }
  .layer-chip { flex-basis:142px; min-height:49px; }
}
@media(prefers-reduced-motion:reduce) { .hero .layer-chip.is-active::before { animation:none; } }

/* ---- sections -------------------------------------------------------------- */
.section { position: relative; padding-block: clamp(76px, 10vw, 136px); border-bottom: 1px solid var(--line); }
.section > .wrap { position: relative; z-index: 1; }
.section__head { max-width: 780px; margin-bottom: clamp(36px, 5vw, 64px); }
.section__head h2 { margin: 16px 0 18px; }
.section__head .lead { margin: 0; }
.topo-bg { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 0; -webkit-mask-image: linear-gradient(180deg, transparent, #000 12%, #000 88%, transparent); mask-image: linear-gradient(180deg, transparent, #000 12%, #000 88%, transparent); }
.js .reveal { transform: translateY(14px); transition: transform .75s cubic-bezier(.2, .7, .2, 1); }
.js .reveal.is-in { transform: none; }

/* ---- approach (positioning) -------------------------------------------- */
.section--approach { background: linear-gradient(180deg, #080D13, var(--ink-0)); }
.approach__head { max-width: none; display: grid; grid-template-columns: 1.1fr 1fr; column-gap: 64px; align-items: end; }
.approach__head .eyebrow { grid-column: 1 / -1; margin-bottom: 20px; line-height: 1.5; }
.approach__autoplay { margin-left: auto; padding: 6px 0 6px 12px; border: 0; background: none; color: var(--text-2); font: 500 12px/1.4 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; cursor: pointer; }
.approach__autoplay:hover { color: var(--gold-2); }
.approach__autoplay[hidden] { display: none; }
.approach__head h2 { margin: 0; }
.approach__head .lead { max-width: 47ch; font-size: 17px; padding-bottom: 2px; }
.approach { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: clamp(28px, 4vw, 56px); align-items: stretch; }
.approach__tabs { display: flex; flex-direction: column; justify-content: space-between; gap: 8px; min-width: 0; }
.approach__tab { position: relative; display: grid; grid-template-columns: 32px minmax(0, 1fr) 18px; gap: 16px; align-items: start; width: 100%; padding: 21px 18px; border: 1px solid transparent; border-bottom-color: var(--line); border-radius: 8px; background: transparent; color: var(--text); text-align: left; cursor: pointer; transition: background-color .2s, border-color .2s; }
.approach__tab:hover { background: rgba(143,176,208,.04); border-color: var(--line); }
.approach__tab[aria-selected="true"] { border-color: rgba(216,166,74,.28); background: linear-gradient(105deg, rgba(216,166,74,.095), rgba(216,166,74,.018)); }
.approach__tab[aria-selected="true"]::before { content: ""; position: absolute; left: -1px; top: 19px; bottom: 19px; width: 2px; border-radius: 2px; background: var(--gold); }
/* N6: while the section is advancing on its own, the selected tab carries a gold
   line that runs for one --approach-cycle. Manual selection removes .is-autoplay. */
.approach__tab::after { content: ""; position: absolute; left: 0; bottom: -1px; width: 0; height: 2px; border-radius: 2px; background: var(--gold); }
.approach__tab.is-autoplay::after { animation: approach-progress var(--approach-cycle, 6s) linear forwards; }
@keyframes approach-progress { to { width: 100%; } }
.approach__number { padding-top: 4px; color: var(--text-3); font: 400 12px/1.5 var(--font-mono); }
.approach__tab[aria-selected="true"] .approach__number { color: var(--gold-2); }
.approach__copy { display: block; }
.approach__title { display: block; margin-bottom: 7px; font: 600 18px/1.3 var(--font-display); letter-spacing: -.015em; }
.approach__description { display: block; color: var(--text-2); font: 400 14px/1.55 var(--font-body); }
.approach__arrow { margin-top: 3px; width: 18px; height: 18px; fill: none; stroke: var(--gold-2); stroke-width: 1.4; opacity: 0; transform: translateX(-3px); transition: opacity .2s, transform .2s; }
.approach__tab[aria-selected="true"] .approach__arrow { opacity: 1; transform: none; }
.approach__figure { min-width: 0; border: 1px solid var(--line-strong); border-radius: var(--radius-lg); background: var(--ink-1); box-shadow: 0 20px 50px rgba(0,0,0,.18); }
.approach__figure-top { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 16px; padding: 17px 24px; border-bottom: 1px solid var(--line); color: var(--text-2); font: 400 11px/1.4 var(--font-mono); letter-spacing: .08em; }
.approach__figure-label { color: var(--gold); }
.approach__panels { display: grid; }
.approach__panel { min-width: 0; grid-area: 1 / 1; }
.approach__panel[hidden] { display: none; }
.approach__panel:focus-visible { outline-offset: -4px; border-radius: 4px; }
.approach__panel-head { padding: 26px 28px 0; min-height: 138px; }
.approach__kicker { margin: 0 0 12px; color: var(--gold); font: 400 11px/1.4 var(--font-mono); letter-spacing: .12em; }
.approach__panel-head h3 { font-size: clamp(23px, 2.2vw, 28px); line-height: 1.2; letter-spacing: -.025em; }
.approach__panel-head h3 + p { margin: 10px 0 0; color: var(--text-2); font-size: 14px; line-height: 1.55; max-width: 47ch; }
.approach__art { display: block; width: 100%; height: clamp(280px, 26vw, 332px); object-fit: contain; padding: 2px 8px; }
.approach__legend { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 10px 22px; min-height: 40px; margin: 0; padding: 8px 20px 14px; list-style: none; color: var(--text-2); font-size: 12px; line-height: 1.4; }
.approach__legend li { display: flex; align-items: center; gap: 8px; }
.approach__key { display: inline-block; flex: none; width: 16px; height: 2px; background: var(--steel); }
.approach__key--gold { background: var(--gold); }
.approach__key--blue { background: #64BDE0; }
.approach__key--points { height: 6px; background: radial-gradient(circle, var(--steel) 1px, transparent 1.5px) 0 0 / 5px 5px; }
.approach__key--ring { width: 8px; height: 8px; border-radius: 50%; border: 1.5px solid var(--gold); background: transparent; }
.approach__key--evidence { width: 3px; height: 11px; background: var(--text); }
.approach__key--current { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); }
.approach__key--history { height: 0; background: transparent; border-top: 1px dashed var(--text-2); }
.approach__outputs { padding: 18px 28px; margin: 0 0 0; border-top: 1px solid var(--line); background: rgba(143,176,208,.025); min-height: 84px; }
.approach__outputs > span { display: block; margin-bottom: 7px; color: var(--text-2); font: 400 11px/1.4 var(--font-mono); letter-spacing: .12em; }
.approach__outputs p { margin: 0; color: var(--text); font-size: 13px; line-height: 1.55; }
.approach__figure-note { margin: 0; padding: 12px 28px; border-top: 1px solid var(--line); color: var(--text-2); font-size: 12px; line-height: 1.5; }
.approach__record { display: flex; flex-direction: column; justify-content: center; gap: 18px; height: clamp(280px, 26vw, 332px); padding: 8px 28px; }
.record-flow { display: flex; justify-content: center; align-items: center; gap: clamp(12px, 2vw, 24px); color: var(--text-2); font: 400 12px/1.4 var(--font-mono); }
.record-flow span:last-child { color: var(--gold-2); }
.record-flow svg { width: 22px; height: 16px; fill: none; stroke: var(--line-strong); stroke-width: 1.5; }
.record-example { border: 1px solid var(--line-strong); border-radius: 8px; background: #0E1620; }
.record-example__heading { display: flex; align-items: center; gap: 12px; padding: 14px 18px; font: 600 15px/1.35 var(--font-body); border-bottom: 1px solid var(--line); }
.record-example__heading > svg { width: 25px; height: 25px; fill: none; stroke: var(--gold); stroke-width: 1.4; }
.record-example small { display: block; margin-top: 3px; color: var(--text-2); font: 400 12px/1.4 var(--font-body); }
.record-example__row { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 11px 18px; }
.record-example__row + .record-example__row { border-top: 1px solid var(--line); }
.record-example__file { display: flex; align-items: center; gap: 11px; min-width: 0; font-size: 13px; line-height: 1.35; }
.record-example__file > svg { width: 19px; height: 23px; flex: none; fill: none; stroke: var(--steel); stroke-width: 1.2; }
.record-example__status { flex: none; padding: 3px 7px; border: 1px solid rgba(92,185,122,.24); border-radius: 4px; color: var(--ok-2); background: rgba(92,185,122,.06); font: 400 11px/1.5 var(--font-mono); }
.record-example__row--past { color: var(--text-2); }
.record-example__status--past { border-color: var(--line-strong); background: transparent; color: var(--text-2); }
.approach__connection { display: flex; justify-content: center; align-items: center; gap: 14px; margin-top: 32px; padding-top: 27px; border-top: 1px solid var(--line); }
.approach__connection > svg { width: 27px; height: 27px; flex: none; fill: none; stroke: var(--gold); stroke-width: 1.25; }
.approach__connection p { display: flex; flex-wrap: wrap; gap: 4px 14px; margin: 0; font-size: 14px; }
.approach__connection strong { color: var(--text); font-weight: 500; }
.approach__connection span { color: var(--text-2); }
@media (max-width: 1080px) {
  .approach__head { column-gap: 32px; }
  .approach { grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 24px; }
  .approach__tab { gap: 10px; padding: 20px 14px; grid-template-columns: 26px minmax(0, 1fr) 14px; }
  .approach__title { font-size: 17px; }
  .approach__figure-top { padding-inline: 20px; }
  .approach__figure-label { display: none; }
  .approach__panel-head, .approach__outputs { padding-inline: 22px; }
}
@media (max-width: 860px) {
  .approach__head { grid-template-columns: 1fr; gap: 20px; }
  .approach__head .eyebrow { margin-bottom: 0; }
  .approach__head .lead { max-width: 62ch; }
  .approach { grid-template-columns: 1fr; gap: 18px; }
  .approach__tabs { flex-direction: row; justify-content: flex-start; overflow-x: auto; padding: 4px 4px 10px; scroll-padding-inline: 4px; scrollbar-width: thin; scrollbar-color: var(--line-strong) transparent; }
  .approach__tab { flex: 0 0 auto; width: auto; min-height: 58px; display: flex; align-items: center; gap: 12px; padding: 15px 17px; border-color: var(--line); }
  /* The tab strip clips an outside focus ring once it scrolls. */
  .approach__tab:focus-visible { outline-offset: -3px; }
  .approach__tab[aria-selected="true"]::before { top: 14px; bottom: 14px; }
  .approach__number { padding: 0; }
  .approach__title { font-size: 15px; margin: 0; white-space: nowrap; }
  .approach__description, .approach__arrow { display: none; }
  .approach__panel-head { min-height: 126px; }
  .approach__art, .approach__record { height: clamp(280px, 48vw, 370px); }
  .approach__record { max-width: 560px; margin-inline: auto; }
  .approach__connection p { display: block; }
  .approach__connection span { display: block; margin-top: 4px; }
}
@media (max-width: 480px) {
  .approach__panel-head { padding: 22px 18px 0; min-height: 142px; }
  .approach__panel-head h3 { font-size: 23px; }
  .approach__panel-head h3 + p { font-size: 13px; }
  .approach__art, .approach__record { height: 280px; }
  .approach__art { padding-inline: 0; }
  .approach__record { padding-inline: 14px; gap: 14px; }
  .record-example__heading { padding: 12px 14px; }
  .record-example__row { padding: 10px 12px; gap: 8px; }
  .record-example__file { gap: 8px; font-size: 12px; }
  .record-example__status { font-size: 11px; padding-inline: 5px; }
  .approach__outputs, .approach__figure-note { padding-inline: 18px; }
  .approach__legend { gap: 10px 18px; font-size: 12px; }
  .approach__connection { justify-content: flex-start; align-items: flex-start; }
}
@media (prefers-reduced-motion: reduce) {
  .approach__tab, .approach__arrow { transition: none; }
  .approach__tab.is-autoplay::after { animation: none; }
}

/* ---- services --------------------------------------------------------------- */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; }
.filter { background: transparent; border: 1px solid var(--line); color: var(--text-2); padding: 8px 14px; border-radius: 999px; font: 500 13px/1 var(--font-body); cursor: pointer; transition: .15s; }
.filter:hover { color: var(--text); border-color: var(--line-strong); }
.filter.is-active { border-color: var(--gold); color: var(--gold-2); background: var(--gold-dim); }
.services { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.service { background: var(--ink-1); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 24px; display: flex; flex-direction: column; gap: 12px; transition: border-color .2s, transform .2s; }
.service:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.service__icon { width: 56px; height: 56px; color: var(--steel); display: grid; place-items: center; border-radius: 8px; background: var(--ink-2); border: 1px solid var(--line); }
.service__icon svg { width: 36px; height: 36px; }
.service__head { display: flex; flex-direction: column; gap: 8px; }
.service h3 { font-size: 19px; }
.service > p { margin: 0; color: var(--text-2); font-size: 15px; }
.service__list { margin: 4px 0 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 6px; font-size: 14px; color: var(--text-2); }
.service__list li { padding-left: 14px; position: relative; }
.service__list li::before { content: ""; position: absolute; left: 0; top: .65em; width: 6px; height: 1px; background: var(--gold); }
.notes { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 28px; }
.note { padding: 18px 20px; border-radius: var(--radius); font-size: 14.5px; line-height: 1.55; color: var(--text-2); border: 1px solid var(--line); background: var(--ink-1); }
.note strong { color: var(--text); }
.note--quote { border-left: 3px solid var(--orange); }
.note--scope { border-left: 3px solid var(--steel); }
@media (max-width: 1000px) { .services { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) { .services, .notes { grid-template-columns: 1fr; } }

/* ---- subsurface ------------------------------------------------------------ */
.section--subsurface { background: var(--ink-1); }
.ss { display: grid; grid-template-columns: minmax(0, 1fr); gap: 20px; background: var(--ink-0); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 20px; box-shadow: var(--shadow); }
.ss__group + .ss__group { margin-top: 22px; }
/* The seven mode labels are long sentences: they wrap onto as many rows as the
   toolbar needs, and only become one scrolling row on phones (see 900px block). */
.ss__modes { display: flex; flex-wrap: wrap; gap: 6px; padding-block: 4px 7px; }
.ss-mode { flex: none; white-space: nowrap; text-align: left; background: var(--ink-2); border: 1px solid var(--line); color: var(--text-2); padding: 10px 12px; border-radius: 4px; font: 500 13px/1.25 var(--font-body); cursor: pointer; display: flex; align-items: center; gap: 10px; transition: .15s; }
.ss-mode::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--line-strong); flex: none; transition: background-color .15s; }
.ss-mode:hover { border-color: var(--line-strong); color: var(--text); }
.ss-mode[aria-pressed="true"] { border-color: var(--gold-line); color: var(--gold-2); background: var(--gold-dim); }
.ss-mode[aria-pressed="true"]::before { background: var(--gold); }
.ss__evidence { display: flex; gap: 8px; }
.ss-toggle { display: flex; gap: 10px; align-items: center; cursor: pointer; padding: 8px 12px; border: 1px solid var(--line); border-radius: 4px; background: var(--ink-2); font-size: 13px; color: var(--text-2); }
.ss-toggle input { accent-color: var(--gold); margin: 3px 0 0; }
.ss-toggle b { color: var(--text); display: block; font-weight: 600; }
.ss-toggle small { color: var(--text-2); font: 400 11px/1.4 var(--font-mono); }
.ss__seq p { margin: 6px 0 0; font-size: 13px; line-height: 1.5; }
.ss__step-count { font: 500 11px/1.4 var(--font-mono); color: var(--text-3); text-transform: uppercase; letter-spacing: .08em; }
.ss__step-title { color: var(--text); font-weight: 600; font-size: 14px; }
.ss__step-text { color: var(--text-2); }
.ss__dots { display: flex; gap: 6px; margin: 12px 0; }
.ss__dots i { width: 20px; height: 3px; background: var(--line-strong); border-radius: 2px; transition: background-color .2s; }
.ss__dots i.is-active { background: var(--gold); }
.ss__seq-btns { display: flex; flex-wrap: wrap; gap: 6px; }
.ss__canvas-wrap { position: relative; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; background: var(--ink-1); }
.ss__canvas { display: block; width: 100%; aspect-ratio: 2.1 / 1; touch-action: none; cursor: crosshair; }
.ss__hint { margin: 12px 0 0; font-size: 14px; line-height: 1.55; color: var(--text-2); }
.ss__legend { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-top: 12px; font: 400 12px/1 var(--font-mono); color: var(--text-2); }
.ss__legend span { display: inline-flex; align-items: center; gap: 6px; }
.ss__legend i { width: 12px; height: 12px; border-radius: 2px; display: inline-block; }
.ss__disclaimer { margin: 14px 0 0; font: 500 11.5px/1.5 var(--font-mono); color: var(--gold-2); letter-spacing: .02em; padding: 8px 10px; border: 1px dashed var(--gold-line); border-radius: 4px; }
.ss__readout { margin-top: 8px; padding: 12px; font-size: 13px; color: var(--text-2); border: 1px solid var(--line); border-radius: 4px; background: var(--ink-1); min-height: 140px; }
.ss-readout__empty { margin: 0; color: var(--text-3); line-height: 1.5; }
.ss-readout__pos { font: 500 11px/1.4 var(--font-mono); color: var(--text); margin-bottom: 8px; }
.ss-readout__grid { display: grid; grid-template-columns: auto 1fr; gap: 7px 10px; margin: 0; align-items: center; }
.ss-readout__grid dt { font-size: 12px; color: var(--text-3); }
.ss-readout__grid dd { margin: 0; display: flex; align-items: center; gap: 8px; }
.ss-readout__grid b { font: 500 12px/1 var(--font-mono); color: var(--text); min-width: 5ch; text-align: right; font-variant-numeric: tabular-nums; }
.ss-bar { flex: 1; height: 6px; background: var(--ink-3); border-radius: 3px; overflow: hidden; }
.ss-bar i { display: block; height: 100%; background: var(--gold); }
.ss-bar.is-steel i { background: var(--steel); }
.ss-bar.is-muted i { background: var(--text-3); }
.ss-readout__fams { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.ss-readout__fam { display: inline-flex; align-items: center; gap: 5px; font: 400 11px/1 var(--font-mono); padding: 5px 7px; border: 1px solid var(--line); border-radius: 3px; }
.ss-readout__fam b { color: var(--gold-2); font-weight: 600; }
.ss-readout__fam i { width: 8px; height: 8px; border-radius: 2px; }
.ss-readout__fam.is-weak { opacity: .4; }
.ss__note { font: 400 11px/1.45 var(--font-mono); color: var(--text-3); margin: 6px 0 10px; }
.ss__families { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.ss-family { display: grid; grid-template-columns: 24px 1fr auto; gap: 10px; align-items: center; text-align: left; background: var(--ink-2); border: 1px solid var(--line); border-radius: 4px; padding: 8px 10px; cursor: pointer; color: var(--text-2); transition: border-color .15s, background-color .15s, opacity .2s; }
.ss-family:hover { border-color: var(--line-strong); }
.ss-family.is-focus { border-color: var(--gold-line); background: var(--gold-dim); }
.ss-family.is-weak { opacity: .55; }
.ss-family__key { font: 600 12px/1 var(--font-mono); color: var(--gold-2); width: 24px; height: 24px; display: grid; place-items: center; border: 1px solid var(--gold-line); border-radius: 3px; }
.ss-family__body { display: flex; flex-direction: column; gap: 5px; min-width: 0; }
.ss-family__label { font-size: 12px; line-height: 1.3; color: var(--text); }
.ss-family__bar { height: 4px; background: var(--ink-4); border-radius: 2px; overflow: hidden; }
.ss-family__bar i { display: block; height: 100%; background: var(--gold); transition: width .35s; }
.ss-family__w { font: 500 11px/1 var(--font-mono); color: var(--text-2); font-variant-numeric: tabular-nums; }
.ss-framing { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-top: 40px; }
.ss-framing h3 { font-size: 18px; margin: 0 0 8px; }
.ss-framing p { margin: 0; color: var(--text-2); font-size: 15px; }
.ss-status { margin-top: 28px; padding: 18px 20px; border: 1px solid var(--line); border-left: 3px solid var(--gold); border-radius: var(--radius); font-size: 14.5px; line-height: 1.55; color: var(--text-2); background: var(--ink-0); }
.ss-status strong { color: var(--text); }
.ss.is-failed .ss__canvas-wrap::after { content: "The interactive section could not start in this browser."; position: absolute; inset: 0; display: grid; place-items: center; color: var(--text-2); font: 500 13px var(--font-mono); }
@media (max-width: 760px) { .ss-framing { grid-template-columns: 1fr; } }

/* ---- platform: workflow + dashboard ------------------------------------ */
.section--platform { background: var(--ink-0); }
.platform__head { max-width: none; display: grid; grid-template-columns: 1.08fr 1fr; align-items: end; column-gap: 64px; }
.platform__head .eyebrow { grid-column: 1 / -1; margin-bottom: 20px; }
.platform__head h2 { margin: 0; }
.platform__head .lead { max-width: 46ch; font-size: 17px; margin: 0; }
.flow { list-style: none; margin: 0 0 40px; padding: 0; display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 28px; }
.flow li { position: relative; min-width: 0; }
.flow li::before { content: ""; position: absolute; top: 15px; left: 46px; right: 0; height: 1px; background: var(--line-strong); }
.flow__number { display: grid; place-items: center; width: 31px; height: 31px; margin-bottom: 15px; border: 1px solid var(--gold-line); border-radius: 6px; color: var(--gold-2); background: rgba(216,166,74,.06); font: 400 11px/1 var(--font-mono); }
.flow b { display: block; font: 600 16px/1.35 var(--font-body); color: var(--text); }
.flow p { margin: 7px 0 0; max-width: 28ch; color: var(--text-2); font-size: 14px; line-height: 1.5; }
.dash { overflow: hidden; border: 1px solid var(--line-strong); border-radius: 14px; background: var(--ink-1); box-shadow: var(--shadow); font-size: 14px; }
.dash svg:not(.dash__map-overlays) { stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.dash__top { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 24px; padding: 18px 24px; border-bottom: 1px solid var(--line); background: #101923; }
.dash__identity { display: flex; gap: 16px; align-items: center; }
.dash__brand { display: inline-flex; align-items: center; gap: 8px; font: 700 16px/1 var(--font-display); letter-spacing: .04em; }
.dash__brand-mark { display: block; flex: none; width: 20px; height: 20px; }
.dash__workspace { padding-left: 16px; border-left: 1px solid var(--line-strong); color: var(--text-2); font-size: 12px; }
.dash__preview-label { display: inline-flex; align-items: center; gap: 8px; color: var(--text-2); font: 400 11px/1.5 var(--font-mono); }
.dash__preview-label > span { width: 6px; height: 6px; border: 1px solid var(--gold); border-radius: 50%; }
.dash__sitebar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px; padding: 24px; }
.dash__eyebrow { display: block; font: 400 11px/1.5 var(--font-mono); color: var(--text-2); letter-spacing: .12em; }
.dash__sitebar h3 { margin: 5px 0 0; font: 600 25px/1.2 var(--font-display); letter-spacing: -.02em; }
.dash__site-meta { display: flex; align-items: center; gap: 28px; color: var(--text-2); font-size: 11px; line-height: 1.4; }
.dash__site-meta strong { display: block; margin-top: 5px; color: var(--text); font-size: 13px; font-weight: 500; }
.dash__role { display: flex; gap: 10px; align-items: center; padding-left: 28px; border-left: 1px solid var(--line); }
.dash__avatar { display: grid; place-items: center; width: 32px; height: 32px; border: 1px solid var(--line-strong); border-radius: 50%; color: var(--steel); background: var(--ink-2); font: 500 11px/1 var(--font-mono); }
.dash__nav { display: flex; gap: 6px; overflow-x: auto; padding: 0 20px; border-bottom: 1px solid var(--line); scrollbar-width: thin; scrollbar-color: var(--line-strong) transparent; }
.dash__nav button { position: relative; display: inline-flex; align-items: center; justify-content: center; gap: 9px; flex: none; padding: 15px 14px; border: 0; border-bottom: 2px solid transparent; background: transparent; color: var(--text-2); font: 500 13px/1.2 var(--font-body); cursor: pointer; white-space: nowrap; transition: color .15s,border-color .15s; }
.dash__nav button > svg { width: 17px; height: 17px; color: var(--text-2); }
.dash__nav button:hover { color: var(--text); }
.dash__nav button.is-active { color: var(--gold-2); border-bottom-color: var(--gold); }
.dash__nav button.is-active > svg { color: var(--gold-2); }
.dash__nav button:focus-visible { outline-offset: -4px; border-radius: 4px; }
.dash__body { display: grid; grid-template-columns: minmax(0,1fr) 282px; align-items: stretch; }
.dash__main { padding: 22px; min-width: 0; min-height: 624px; }
.dash__panel { min-width: 0; }
.dash__panel[hidden] { display: none; }
.dash__panel:focus-visible { outline-offset: 7px; border-radius: 4px; }
.dash__view-head { display: flex; align-items: center; justify-content: space-between; gap: 18px; min-height: 53px; margin-bottom: 18px; }
.dash__view-head h4 { margin: 0; color: var(--text); font: 600 16px/1.35 var(--font-body); }
.dash__view-head p { margin: 5px 0 0; color: var(--text-2); font-size: 12px; line-height: 1.5; }
.dash__view-tag { flex: none; padding: 5px 7px; border: 1px solid var(--line); border-radius: 4px; color: var(--text-2); font: 400 11px/1.4 var(--font-mono); letter-spacing: .05em; }
.dash__map { overflow: hidden; border: 1px solid var(--line-strong); border-radius: 8px; background: #182529; }
.dash__map-stage { position: relative; width: 100%; aspect-ratio: 20 / 13; max-height: 420px; overflow: hidden; isolation: isolate; }
.dash__basemap, .dash__map-overlays { display: block; width: 100%; height: 100%; position: absolute; inset: 0; }
.dash__basemap { object-fit: fill; }
.dash__map-annotations { position: absolute; inset: 0; pointer-events: none; }
.map-tag { position: absolute; top: var(--y); left: var(--x); transform: translate(-50%,-50%); display: inline-flex; align-items: center; gap: 7px; padding: 4px 7px; border: 1px solid rgba(171,191,202,.24); border-radius: 4px; background: rgba(8,15,19,.91); color: var(--text); box-shadow: 0 2px 8px rgba(0,0,0,.16); font: 500 11px/1.25 var(--font-mono); white-space: nowrap; }
.map-tag small { font: 400 11px/1.25 var(--font-body); opacity: .8; }
.map-tag--stockpile { color: #F2CE87; border-color: rgba(229,188,106,.48); }
.map-tag--design { color: #B8D8EE; border-color: rgba(143,176,208,.45); }
.map-tag--planned { color: var(--text-2); border-style: dashed; }
.map-tag--safety { color: #F2B985; border-color: rgba(242,173,109,.35); font-family: var(--font-body); }
.dash__north { position: absolute; top: 15px; left: 15px; display: flex; flex-direction: column; align-items: center; gap: 2px; color: #DBE6ED; }
.dash__north > svg { width: 21px; height: 26px; }
.dash__north b { font: 400 11px/1 var(--font-mono); }
.dash__map-caption { position: absolute; right: 12px; bottom: 10px; padding: 4px 7px; border-radius: 3px; background: rgba(8,15,19,.75); color: #B5C3C8; font: 400 11px/1.3 var(--font-body); }
.dash__layers { display: flex; align-items: center; flex-wrap: wrap; gap: 10px 14px; padding: 13px 14px; border-top: 1px solid var(--line-strong); background: #101923; }
.dash__layers-title { color: var(--text-2); font: 500 11px/1.4 var(--font-body); white-space: nowrap; }
.dash__layer-options { display: flex; flex-wrap: wrap; gap: 7px; }
.dash__layer { display: inline-flex; align-items: center; gap: 7px; padding: 8px 9px; border: 1px solid var(--line); border-radius: 5px; color: var(--text-2); background: var(--ink-1); cursor: pointer; font: 400 11px/1.3 var(--font-body); }
.dash__layer:has(input:checked) { border-color: var(--line-strong); color: var(--text); }
.dash__layer:hover { border-color: var(--steel); }
.dash__layer input { width: 13px; height: 13px; margin: 0; accent-color: var(--gold); }
.dash__layer--drainage input { accent-color: #6BBCD7; }
.dash__layer--design input, .dash__layer--boreholes input { accent-color: var(--steel); }
.dash__layer--safety input { accent-color: var(--orange-2); }
.dash__research-note { margin: 12px 0 0; padding: 10px 12px; border-left: 2px solid var(--gold); background: var(--gold-dim); color: var(--gold-2); font-size: 12px; }
.dash__map-summary { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 22px; margin-top: 16px; color: var(--text-2); font-size: 11px; }
.dash__map-summary > span { display: inline-flex; align-items: center; gap: 6px; }
.dash__map-summary b { color: var(--text); font-weight: 500; }
.summary-dot { display: inline-block; width: 5px; height: 5px; margin-right: 1px; border-radius: 50%; background: var(--steel); }
.summary-dot--gold { background: var(--gold); }
.summary-dot--orange { background: var(--orange-2); }
.dash__rail { display: flex; flex-direction: column; gap: 16px; padding: 22px 18px; border-left: 1px solid var(--line); background: #090F16; }
.dash__card { padding: 18px; border: 1px solid var(--line); border-radius: 8px; background: var(--ink-1); }
.dash__card--current { border-color: rgba(92,185,122,.3); background: linear-gradient(160deg,rgba(92,185,122,.055),var(--ink-1) 65%); }
.dash__card-label { display: flex; align-items: center; gap: 8px; margin-bottom: 17px; color: var(--ok-2); font-size: 11px; font-weight: 500; }
.dash__approval-icon { display: grid; place-items: center; width: 19px; height: 19px; border: 1px solid rgba(92,185,122,.4); border-radius: 50%; }
.dash__approval-icon > svg { width: 13px; height: 13px; }
.dash__release-title { margin: 0; font: 600 19px/1.3 var(--font-display); letter-spacing: -.02em; }
.dash__release-meta { margin: 7px 0 0; color: var(--text-2); font-size: 11px; line-height: 1.6; }
.dash__release-facts { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; padding: 16px 0; margin-top: 16px; border-top: 1px solid var(--line); color: var(--text-2); font-size: 11px; }
.dash__release-facts strong { display: block; margin-top: 5px; color: var(--text); font-size: 11px; font-weight: 500; }
.dash__action { display: flex; justify-content: space-between; align-items: center; gap: 12px; width: 100%; padding: 10px 12px; border: 1px solid var(--line-strong); border-radius: 5px; color: var(--text); background: var(--ink-2); font: 500 12px/1.5 var(--font-body); cursor: pointer; }
.dash__action:hover { border-color: var(--gold); color: var(--gold-2); }
.dash__action svg, .dash__text-action svg { width: 16px; height: 16px; flex: none; }
.dash__card-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 18px; }
.dash__card-heading h4 { margin: 0; font: 500 13px/1.4 var(--font-body); }
.dash__count { display: grid; place-items: center; width: 22px; height: 22px; border-radius: 4px; background: var(--gold-dim); color: var(--gold-2); font: 500 11px/1 var(--font-mono); }
.dash__review-list { display: flex; flex-direction: column; gap: 18px; margin: 0; padding: 0; list-style: none; }
.dash__review-list li { display: flex; gap: 10px; }
.dash__review-dot { width: 5px; height: 5px; margin-top: 7px; flex: none; border-radius: 50%; background: var(--gold); }
.dash__review-dot--steel { background: var(--steel); }
.dash__review-list b { display: block; font-size: 12px; line-height: 1.45; font-weight: 500; }
.dash__review-list div > span { display: block; margin-top: 5px; color: var(--text-2); font-size: 11px; line-height: 1.4; }
.dash__card--history { border-color: transparent; padding-top: 6px; background: transparent; }
.dash__card--history p { margin: 13px 0 14px; font-size: 12px; line-height: 1.7; }
.dash__card--history p > span { color: var(--text-2); }
.dash__text-action { display: inline-flex; align-items: center; gap: 12px; padding: 0; border: 0; color: var(--gold-2); background: transparent; cursor: pointer; font: 500 12px/1.5 var(--font-body); }
.dash__text-action:hover { text-decoration: underline; text-underline-offset: 4px; }
.dash__bottom { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px 22px; padding: 14px 24px; border-top: 1px solid var(--line); color: var(--text-2); font-size: 11px; line-height: 1.5; }
.dash__bottom > span:first-child { display: inline-flex; align-items: center; gap: 8px; }
.dash__bottom svg { width: 14px; height: 14px; color: var(--steel); }
.dash__terrain { overflow: hidden; border: 1px solid var(--line); border-radius: 8px; background: #0A0F16; }
.dash__terrain canvas { display: block; width: 100%; aspect-ratio: 16 / 11; }
.dash__terrain canvas[hidden] { display: none; }
.dash__metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 22px 0 24px; }
.dash__metrics > div { padding: 20px; border: 1px solid var(--line); border-radius: 8px; background: var(--ink-2); }
.dash__metrics span { display: block; color: var(--text-2); font-size: 12px; }
.dash__metrics strong { display: block; margin-top: 10px; font: 500 clamp(22px,2.5vw,30px)/1.2 var(--font-display); letter-spacing: -.02em; }
.dash__metrics small { font: 400 14px var(--font-body); color: var(--text-2); }
.dash__table-wrap { overflow-x: auto; }
.dash__table { width: 100%; border-collapse: collapse; font-size: 13px; white-space: nowrap; }
.dash__table th { padding: 12px 10px; border-bottom: 1px solid var(--line-strong); color: var(--text-2); text-align: left; font: 400 11px/1.5 var(--font-body); }
.dash__table td { padding: 17px 10px; border-bottom: 1px solid var(--line); color: var(--text-2); }
.dash__table td:first-child { color: var(--text); }
.dash__table td b { font-weight: 500; color: var(--gold-2); margin-right: 6px; }
.dash__table .num { text-align: right; }
.num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; text-align: right; white-space: nowrap; }
.meter { display: block; height: 6px; background: var(--ink-3); border-radius: 3px; overflow: hidden; min-width: 70px; width: 100%; }
.meter i { display: block; height: 100%; width: var(--w,0%); background: var(--gold); border-radius: 0 3px 3px 0; }
.meter i.is-cut { background: var(--orange); }
.meter i.is-fill { background: var(--steel-2); }
.dash__foot { margin: 14px 0 24px; color: var(--text-2); font-size: 12px; line-height: 1.65; }
.dash__subhead { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px; margin: 28px 0 20px; }
.dash__subhead h4 { font: 500 16px/1.4 var(--font-body); }
.dash__subhead span { color: var(--text-2); font-size: 12px; }
.cutfill { display: grid; grid-template-columns: 1fr; gap: 20px; }
.cutfill__bar { display: grid; grid-template-columns: 34px 1fr auto; align-items: center; gap: 16px; color: var(--text-2); font: 400 12px/1.5 var(--font-mono); }
.dash__files { display: flex; flex-direction: column; gap: 10px; list-style: none; margin: 22px 0; padding: 0; }
.dash__files li { display: grid; grid-template-columns: 32px minmax(0,1fr) auto auto; align-items: center; gap: 12px; padding: 17px 14px; border: 1px solid var(--line); border-radius: 7px; background: var(--ink-0); }
.dash__files li:first-child { border-color: rgba(92,185,122,.3); }
.dash__file-icon { display: grid; place-items: center; width: 30px; height: 34px; border-radius: 5px; background: var(--ink-2); color: var(--steel); }
.dash__file-icon svg { width: 20px; height: 23px; }
.dash__files b { display: block; color: var(--text); font-size: 13px; line-height: 1.4; font-weight: 500; }
.dash__files small { display: block; margin-top: 6px; color: var(--text-2); font-size: 11px; line-height: 1.45; }
.dash__downloads { color: var(--text-2); font: 400 11px/1.4 var(--font-mono); white-space: nowrap; }
.dash__file--past b { color: var(--text-2); }
.chip { display: inline-flex; align-items: center; gap: 5px; font: 500 11px/1 var(--font-mono); letter-spacing: .04em; text-transform: uppercase; padding: 4px 6px; border-radius: 3px; border: 1px solid var(--line-strong); color: var(--text-2); white-space: nowrap; background: rgba(6,9,14,.7); }
.chip--current { border-color: rgba(92,185,122,.55); color: var(--ok-2); }
.chip--review { border-color: rgba(232,178,58,.55); color: var(--warn-2); }
.chip--superseded { color: var(--text-2); border-style: dashed; }
.chip--research { border-color: var(--gold-line); color: var(--gold-2); }
.dash .chip { padding: 5px 7px; font: 400 11px/1.3 var(--font-body); text-transform: none; letter-spacing: 0; border-radius: 4px; }
.dash .chip--current { background: rgba(92,185,122,.055); border-color: rgba(92,185,122,.3); }
.dash .chip--review { background: rgba(216,166,74,.04); border-color: var(--gold-line); }
.dash__split { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 24px; }
.dash__detail-card { padding: 18px; border: 1px solid var(--line); border-radius: 7px; }
.dash__detail-card h4 { margin-bottom: 18px; font: 500 13px/1.4 var(--font-body); }
.dash__list { display: flex; flex-direction: column; gap: 14px; list-style: none; margin: 0; padding: 0; }
.dash__list li { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 5px 12px; color: var(--text-2); font-size: 11px; }
.dash__list b { color: var(--text); font-weight: 400; }
.dash__audit { list-style: none; margin: 26px 0 0; padding: 0; }
.dash__audit li { position: relative; display: grid; grid-template-columns: 32px 1fr; gap: 16px; padding-bottom: 26px; }
.dash__audit li:not(:last-child)::before { content: ""; position: absolute; top: 34px; bottom: 1px; left: 15px; width: 1px; background: var(--line); }
.dash__event-icon { display: grid; place-items: center; width: 32px; height: 32px; border: 1px solid var(--line-strong); border-radius: 50%; color: var(--steel); background: var(--ink-2); }
.dash__event-icon svg { width: 16px; height: 16px; }
.dash__audit li:first-child .dash__event-icon { color: var(--ok-2); border-color: rgba(92,185,122,.3); }
.dash__audit time { color: var(--text-2); font: 400 11px/1.5 var(--font-mono); }
.dash__audit h5 { margin: 8px 0 6px; color: var(--text); font: 500 14px/1.4 var(--font-body); }
.dash__audit p { margin: 0 0 10px; color: var(--text-2); font-size: 12px; line-height: 1.6; }
.platform__benefits { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 40px; margin-top: 36px; }
.platform__benefits > div { position: relative; padding-left: 40px; }
.platform__benefits svg { position: absolute; top: 2px; left: 0; width: 22px; height: 22px; color: var(--gold); stroke: currentColor; stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; }
.platform__benefits h3 { margin: 0 0 9px; font-size: 17px; }
.platform__benefits p { margin: 0; color: var(--text-2); font-size: 14px; line-height: 1.6; }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.dot--warn { background: var(--warn); }
.dot--ok { background: var(--ok); }
@media (max-width: 1100px) {
  .platform__head { column-gap: 32px; }
  .flow { gap: 20px; }
  .flow b { font-size: 15px; }
  .dash__body { grid-template-columns: minmax(0,1fr) 258px; }
  .dash__main { padding: 18px; }
  .dash__rail { padding: 18px 14px; }
  .dash__card { padding: 16px; }
  .dash__view-tag { display: none; }
  .dash__files li { grid-template-columns: 28px minmax(0,1fr) auto; }
  .dash__downloads { grid-column: 2 / -1; }
  .dash__split { grid-template-columns: 1fr; }
}
@media (max-width: 920px) {
  .platform__head { grid-template-columns: 1fr; gap: 20px; }
  .platform__head .eyebrow { margin: 0; }
  .platform__head .lead { max-width: 60ch; }
  .dash__body { grid-template-columns: 1fr; }
  .dash__main { min-height: 0; padding: 22px; }
  .dash__rail { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); border-left: 0; padding: 22px; gap: 18px; }
  .dash__card--history { grid-column: 1 / -1; display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px; padding: 2px 0 0; }
  .dash__card--history p { margin: 0; }
  .dash__card--history .dash__text-action { margin-left: auto; }
  .dash__card--history > .dash__eyebrow { display: none; }
  .dash__files li { grid-template-columns: 32px minmax(0,1fr) auto auto; }
  .dash__downloads { grid-column: auto; }
  .dash__split { grid-template-columns: 1fr 1fr; }
  .platform__benefits { gap: 24px; }
}
@media (max-width: 640px) {
  .flow { grid-template-columns: 1fr 1fr; gap: 26px 20px; margin-bottom: 28px; }
  .flow b { font-size: 14px; }
  .flow p { font-size: 12px; }
  .dash__top { padding: 16px; gap: 12px; }
  .dash__preview-label { font-size: 11px; }
  .dash__sitebar { padding: 20px 16px; }
  .dash__sitebar h3 { font-size: 22px; }
  .dash__site-meta { gap: 0; }
  .dash__role { border: 0; padding-left: 0; }
  .dash__site-meta > span:first-child { display: none; }
  .dash__nav { padding-inline: 8px; gap: 0; }
  .dash__nav button { padding: 14px 12px; font-size: 12px; gap: 7px; }
  .dash__nav button > svg { width: 15px; height: 15px; }
  .dash__main { padding: 18px 12px; }
  .dash__view-head { margin-bottom: 14px; min-height: 0; }
  .dash__view-head h4 { font-size: 15px; }
  .dash__view-head p { font-size: 11px; }
  .dash__map-stage { min-height: 220px; }
  .map-tag { padding: 3px 5px; gap: 4px; font-size: 11px; }
  .map-tag small { display: none; }
  .map-tag--safety { font-size: 11px; }
  .dash__north { top: 10px; left: 10px; }
  .dash__map-caption { right: 8px; bottom: 8px; font-size: 11px; }
  .dash__layers { padding: 12px; gap: 10px; }
  .dash__layers-title { flex-basis: 100%; }
  .dash__layer-options { width: 100%; display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 7px; }
  .dash__layer { justify-content: center; padding: 10px 5px; font-size: 11px; gap: 5px; }
  .dash__map-summary { gap: 8px 15px; font-size: 11px; line-height: 1.4; }
  .dash__rail { padding: 16px; gap: 14px; }
  .dash__release-facts { grid-template-columns: 1fr; gap: 12px; }
  .dash__card--history { gap: 14px; }
  .dash__card--history .dash__text-action { margin-left: 0; }
  .dash__bottom { padding: 14px 16px; font-size: 11px; }
  .dash__metrics { gap: 10px; }
  .dash__metrics > div { padding: 16px 12px; }
  .dash__metrics span { font-size: 11px; min-height: 33px; }
  .dash__metrics strong { font-size: 23px; }
  .dash__files li { grid-template-columns: minmax(0,1fr) auto; gap: 8px 12px; padding: 15px 12px; }
  .dash__file-icon { display: none; }
  .dash__downloads { grid-column: 1 / -1; }
  .dash__split { grid-template-columns: 1fr; }
  .dash__audit li { gap: 12px; }
  .platform__benefits { grid-template-columns: 1fr; gap: 24px; margin-top: 28px; }
}
@media (max-width: 430px) {
  .dash__rail { grid-template-columns: 1fr; }
  .dash__release-facts { grid-template-columns: 1fr 1fr; }
  .dash__card--history { grid-column: auto; }
}
@media (prefers-reduced-motion: reduce) { .dash__nav button { transition: none; } }

/* ---- industries -------------------------------------------------------------- */
.industries { display: grid; grid-template-columns: 280px minmax(0, 1fr); gap: 24px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--ink-1); overflow: hidden; }
.industries__tabs { display: flex; flex-direction: column; border-right: 1px solid var(--line); background: var(--ink-0); padding: 10px; }
.industries__tabs button { text-align: left; background: none; border: none; border-left: 2px solid transparent; color: var(--text-2); padding: 12px 14px; font: 500 15px/1.3 var(--font-body); cursor: pointer; border-radius: 0 4px 4px 0; transition: .15s; }
.industries__tabs button:hover { color: var(--text); }
.industries__tabs button.is-active { color: var(--gold-2); border-left-color: var(--gold); background: var(--gold-dim); }
.industries__panels { padding: 28px 28px 28px 6px; }
.industries__panels h3 { margin: 0 0 18px; font-size: 24px; }
.usecase { display: grid; grid-template-columns: 160px minmax(0, 1fr); gap: 14px 20px; margin: 0; }
.usecase dt { font: 500 11px/1.6 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--gold); }
.usecase dd { margin: 0; color: var(--text-2); font-size: 15.5px; line-height: 1.55; }
@media (max-width: 860px) {
  .industries { grid-template-columns: 1fr; gap: 0; }
  .industries__tabs { flex-direction: row; overflow-x: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .industries__tabs button { white-space: nowrap; border-left: 0; border-bottom: 2px solid transparent; border-radius: 0; }
  .industries__tabs button:focus-visible { outline-offset: -3px; }
  .industries__tabs button.is-active { border-bottom-color: var(--gold); }
  .industries__panels { padding: 20px; }
  .usecase { grid-template-columns: 1fr; gap: 4px 0; }
  .usecase dd { margin-bottom: 12px; }
}

/* ---- pilot ------------------------------------------------------------------- */
.pilot { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(280px, .8fr); gap: 32px; align-items: start; }
.steps { list-style: none; margin: 0; padding: 0; counter-reset: step; display: flex; flex-direction: column; }
.steps li { counter-increment: step; display: grid; grid-template-columns: 56px minmax(0, 1fr); gap: 16px; padding: 20px 0; border-top: 1px solid var(--line); }
.steps li:last-child { border-bottom: 1px solid var(--line); }
.steps li::before { content: counter(step, decimal-leading-zero); font: 600 22px/1 var(--font-display); font-stretch: 110%; color: var(--gold); padding-top: 3px; }
.steps h3 { margin: 0 0 6px; font-size: 19px; }
.steps p { margin: 0; color: var(--text-2); font-size: 15px; }
.pilot__side { display: flex; flex-direction: column; gap: 16px; }
.card { border: 1px solid var(--line); background: var(--ink-1); border-radius: var(--radius-lg); padding: 22px; }
.card h3 { margin: 0 0 10px; font-size: 17px; }
.card ul { margin: 0; padding-left: 18px; color: var(--text-2); font-size: 14.5px; display: flex; flex-direction: column; gap: 6px; }
.card .muted { margin-top: 12px; }
.standards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-top: 48px; }
.standards h3 { font-size: 17px; margin: 0 0 8px; }
.standards p { margin: 0; color: var(--text-2); font-size: 14.5px; }
.claims { margin-top: 48px; padding: 26px 28px; border: 1px solid var(--line-strong); border-radius: var(--radius-lg); background: var(--ink-1); }
.claims h3 { margin: 0 0 14px; }
.claims ul { margin: 0 0 14px; padding: 0; list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 10px 24px; }
.claims li { padding-left: 16px; position: relative; color: var(--text-2); font-size: 15px; line-height: 1.5; }
.claims li::before { content: ""; position: absolute; left: 0; top: .7em; width: 7px; height: 1px; background: var(--gold); }
.claims b { color: var(--text); }
@media (max-width: 860px) { .pilot { grid-template-columns: 1fr; } .standards { grid-template-columns: 1fr; } .claims ul { grid-template-columns: 1fr; } }

/* ---- faq --------------------------------------------------------------------- */
.faq { max-width: 820px; }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; padding: 18px 0; font: 600 17px/1.35 var(--font-display); font-stretch: 104%; list-style: none; display: flex; justify-content: space-between; gap: 16px; align-items: center; color: var(--text); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 400 22px/1 var(--font-mono); color: var(--gold); flex: none; }
.faq details[open] summary::after { content: "\2212"; }
.faq details p { margin: 0 0 18px; color: var(--text-2); font-size: 15.5px; max-width: 68ch; }

/* ---- contact ------------------------------------------------------------------ */
.contact { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(32px, 5vw, 72px); align-items: start; }
.contact__copy h2 { margin: 16px 0 18px; }
.contact__details { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 10px 16px; margin: 28px 0 0; }
.contact__details dt { font: 500 11px/1.7 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--text-3); }
.contact__details dd { margin: 0; color: var(--text-2); }
.form { background: var(--ink-1); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 28px; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.field--full { grid-column: 1 / -1; }
.field label { font: 500 11.5px/1.4 var(--font-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--text-2); }
.field input, .field select, .field textarea { background: var(--ink-0); border: 1px solid var(--line-strong); color: var(--text); border-radius: 4px; padding: 11px 12px; font: 400 15px/1.4 var(--font-body); width: 100%; }
.field textarea { min-height: 120px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--gold); box-shadow: 0 0 0 3px var(--gold-line); }
.field input::placeholder, .field textarea::placeholder { color: var(--text-3); }
.checks { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 8px; margin: 0; padding: 0; border: 0; }
.checks label { display: flex; gap: 8px; align-items: center; font-size: 14px; color: var(--text-2); padding: 9px 10px; border: 1px solid var(--line); border-radius: 4px; cursor: pointer; }
.checks input { accent-color: var(--gold); margin: 0; }
.form__actions { grid-column: 1 / -1; display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
.form__status { margin: 0; font-size: 14px; color: var(--text-2); }
.form__status[data-kind="error"] { color: var(--orange-2); }
.form__status[data-kind="ok"] { color: var(--ok-2); }
.form__fine { grid-column: 1 / -1; margin: 0; font-size: 12.5px; color: var(--text-3); }
@media (max-width: 860px) { .contact, .form { grid-template-columns: 1fr; } .form { padding: 20px; } }

/* ---- footer -------------------------------------------------------------------- */
.site-footer { padding-block: 48px 40px; background: var(--ink-0); }
.site-footer__in { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 24px 48px; align-items: start; }
.site-footer__brand { display: flex; flex-direction: column; gap: 10px; }
.site-footer__brand .brand__logo { height: 48px; }
.site-footer__tag { margin: 0; font: 500 12px/1 var(--font-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--gold); }
.site-footer__nav { display: flex; flex-wrap: wrap; gap: 6px 18px; }
.site-footer__nav a { color: var(--text-2); text-decoration: none; font-size: 14px; }
.site-footer__nav a:hover { color: var(--gold-2); }
.site-footer__legal { grid-column: 1 / -1; margin: 0; font-size: 12.5px; color: var(--text-3); max-width: 96ch; line-height: 1.6; }
.site-footer__copy { grid-column: 1 / -1; margin: 0; font: 400 12px/1.5 var(--font-mono); color: var(--text-3); }
@media (max-width: 640px) { .site-footer__in { grid-template-columns: 1fr; } }

/* ---- motion preferences ------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { transform: none; transition: none; }
  .layer-chip.is-active::before { transition: none; }
  .btn, .service, .filter { transition: none; }
  .site-nav, .nav-toggle span { transition: none; }
}

/* ---- public terrain, shared model and responsive controls ------------------ */
.quarry-live-dot { display:inline-block; width:6px; height:6px; background:var(--gold); border-radius:50%; flex:none; }
/* Source order is toolbar, stage, stepper, side column; `order` puts the side
   column directly under the stage below 1100px, where the grid is one column. */
.ss__toolbar { order:1; min-width:0; padding-bottom:14px; border-bottom:1px solid var(--line); background:var(--ink-0); }
.ss__view-row h3 { margin-bottom:8px; color:var(--text-2); }
.ss__evidence-row { display:flex; flex-wrap:wrap; align-items:end; gap:14px 22px; margin-top:6px; }
.ss__cores { padding:0; margin:0; border:0; min-width:0; }
.ss__cores legend { padding:0 0 5px; color:var(--text-2); font:500 11px/1.4 var(--font-mono); }
.ss__stage { order:2; min-width:0; }
.ss__display { display:flex; align-items:center; flex-wrap:wrap; gap:6px; margin:0 0 12px; }
.ss__display button { padding:10px 14px; background:var(--ink-1); border:1px solid var(--line-strong); border-radius:4px; color:var(--text-2); cursor:pointer; font:500 13px/1.4 var(--font-body); }
.ss__display button[aria-pressed="true"] { border-color:var(--gold-line); background:var(--gold-dim); color:var(--gold-2); }
.ss__display > span { margin-left:auto; color:var(--text-2); font:400 11px/1.5 var(--font-mono); }
.ss__seq { order:4; display:grid; grid-template-columns:minmax(0,1fr) auto; align-items:center; gap:16px 24px; padding:20px 0; border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.ss__seq .mono-label, .ss__side .mono-label { color:var(--text-2); line-height:1.4; }
.ss__side { order:3; min-width:0; }
.ss-readout__grid { grid-template-columns:auto minmax(60px,1fr) auto minmax(60px,1fr); }
.ss-readout__empty { color:var(--text-2); }
/* Reserve the hint's height so swapping modes does not slide the legend and the
   required disclaimer under it. */
.ss__hint { min-height:5.2em; }
.ss__disclaimer { font-size:12px; line-height:1.7; }
.quarry { overflow:hidden; border:1px solid var(--line-strong); border-radius:8px; background:radial-gradient(ellipse at 55% 42%,var(--ink-4),var(--ink-2) 55%,var(--ink-0)); }
/* These all carry an author `display`, which beats the UA sheet's [hidden] rule, so
   every element the scripts hide with the hidden attribute has to be listed here. */
.quarry[hidden], .quarry-section[hidden], [data-quarry-fallback][hidden], [data-quarry-overlay][hidden],
.hero__layers[hidden], .hero__layers-head[hidden], .quarry__tools button[hidden] { display:none; }
.quarry__head { display:flex; justify-content:space-between; align-items:center; gap:14px; padding:14px 16px; border-bottom:1px solid var(--line); background:var(--ink-1); }
.quarry__head > div { display:flex; flex-wrap:wrap; gap:6px; align-items:center; }
.quarry__head strong { color:var(--text); font:500 11px/1.4 var(--font-mono); letter-spacing:.04em; }
.quarry__head small { display:block; flex-basis:100%; margin-left:12px; color:var(--text-2); font-size:12px; }
.quarry__mode { text-align:right; color:var(--gold-2); font:500 12px/1.45 var(--font-mono); max-width:220px; }
/* C7: one cell, so the poster and the canvas overlap instead of stacking. The
   poster is painted first and hidden on the renderer's first frame. */
.quarry__viewport { position:relative; min-height:300px; display:grid; }
.quarry__canvas { display:block; grid-area:1 / 1; width:100%; height:370px; outline-offset:-5px; touch-action:pan-y; cursor:grab; }
.quarry__canvas:active { cursor:grabbing; }
.quarry__north { position:absolute; right:16px; top:16px; padding:6px 10px; border:1px solid var(--line); border-radius:4px; background:var(--ink-1); display:flex; flex-direction:column; align-items:center; color:var(--text); font:500 11px var(--font-mono); pointer-events:none; }
.quarry__north span { font:400 25px/1.1 var(--font-body); color:var(--gold-2); }
.quarry__viewnote { position:absolute; bottom:16px; left:16px; display:flex; gap:8px; align-items:center; padding:6px 8px; border:1px solid var(--line); border-radius:4px; background:var(--ink-1); font:400 11px/1.5 var(--font-mono); color:var(--text-2); pointer-events:none; }
.quarry__viewnote > span:first-child { color:var(--gold-2); }
.quarry__tools { position:absolute; right:16px; bottom:16px; display:flex; gap:5px; }
.quarry__tools button { display:grid; place-items:center; width:40px; height:40px; padding:0; border:1px solid var(--line-strong); border-radius:4px; background:var(--ink-1); color:var(--text); font:400 19px var(--font-body); cursor:pointer; }
.quarry__tools button:hover { border-color:var(--gold); color:var(--gold-2); }
.quarry__foot { display:flex; justify-content:space-between; flex-wrap:wrap; gap:8px 20px; padding:11px 16px; background:var(--ink-1); border-top:1px solid var(--line); color:var(--text-2); font:400 11px/1.5 var(--font-mono); }
/* C4: the required sentence travels with the panel and is revealed in fullscreen,
   where the surrounding page copy is not on screen. */
.quarry__disclaimer { display:none; }
.quarry-section { border:1px solid var(--line-strong); border-radius:8px; overflow:hidden; }
.quarry-section__head { display:flex; flex-wrap:wrap; justify-content:space-between; align-items:center; gap:8px; padding:14px 16px; background:var(--ink-2); color:var(--text-2); font:400 12px/1.4 var(--font-mono); }
.quarry-section__head strong { color:var(--text); font-weight:500; }
.quarry-section .ss__canvas-wrap { border:0; border-radius:0; }
.quarry-section .ss__canvas { aspect-ratio:2.8 / 1; }
.quarry-sources { margin-top:20px; border-top:1px solid var(--line); padding-top:16px; color:var(--text-2); font-size:13px; line-height:1.7; }
.quarry-sources > summary { cursor:pointer; color:var(--text); font:500 13px var(--font-mono); }
.quarry-sources > div { padding-top:16px; max-width:950px; }
.quarry-sources a { color:var(--steel); }
.quarry__fallback { display:block; grid-area:1 / 1; width:100%; height:370px; object-fit:cover; }
.quarry:fullscreen { display:flex; flex-direction:column; width:100%; height:100%; background:var(--ink-1); border:0; border-radius:0; }
.quarry:fullscreen .quarry__viewport { flex:1; min-height:0; }
.quarry:fullscreen .quarry__canvas, .quarry:fullscreen .quarry__fallback { height:100%; }
.quarry:fullscreen .quarry__disclaimer { display:block; flex-basis:100%; color:var(--gold-2); }
.quarry-static .quarry__tools, .quarry-static > canvas, .quarry-static .quarry__canvas, .quarry-static .quarry__north, .quarry-static .quarry__viewnote { display:none; }

/* Two columns: the toolbar spans the top, the stage and the side column share the
   middle row, and the stepper sits under the stage. */
@media (min-width:1100px) {
  .ss { grid-template-columns:minmax(0,1fr) 300px; align-items:start; }
  .ss__toolbar { grid-column:1 / -1; }
  .ss__stage { grid-column:1; grid-row:2; }
  .ss__side { grid-column:2; grid-row:2; }
  .ss__seq { grid-column:1; grid-row:3; }
  .ss__families { grid-template-columns:minmax(0,1fr); }
  .ss-readout__grid { grid-template-columns:auto minmax(0,1fr); }
}
@media (max-width:900px) {
  .ss { padding:14px; gap:16px; }
  .ss__toolbar { position:sticky; top:calc(71px + env(safe-area-inset-top, 0px)); z-index:6; padding-top:10px; margin-top:-10px; }
  .ss__modes { flex-wrap:nowrap; overflow-x:auto; scrollbar-width:thin; }
  /* The mode strip clips an outside focus ring once it scrolls. */
  .ss-mode:focus-visible { outline-offset:-3px; }
  .ss__seq { grid-template-columns:minmax(0,1fr); }
  .quarry__canvas, .quarry__fallback { height:320px; }
}
@media (max-width:560px) {
  .ss { padding:10px; }
  .ss-mode { min-height:42px; padding:9px 10px; font-size:12px; }
  .ss__hint { min-height:7.8em; }
  .ss__evidence-row { flex-wrap:nowrap; gap:8px; }
  .ss__cores { flex:1; }
  .ss__evidence { gap:5px; }
  .ss-toggle { flex:1; gap:5px; padding:10px 7px; min-height:40px; font-size:12px; }
  .ss-toggle small { display:none; }
  .ss__display > span { flex-basis:100%; margin-left:0; }
  .ss__families { grid-template-columns:1fr; }
  .ss-readout__grid { grid-template-columns:auto minmax(60px,1fr); }
  .quarry__head { align-items:start; flex-wrap:wrap; gap:5px; padding:12px; }
  .quarry__mode { max-width:none; text-align:left; }
  .quarry__canvas, .quarry__fallback { height:300px; }
  .quarry__viewnote { bottom:64px; left:12px; }
  .quarry__tools { right:12px; bottom:12px; }
  .quarry-section .ss__canvas { aspect-ratio:1.5 / 1; }
}