/* Dev Crow Egg · M Specimen — "The science of the print"
   A materials lab crossed with a natural-history specimen catalogue.
   Cool lab white, graphite hairlines, one cyan for measurements, true filament colors. */

:root {
  --paper: #eef0f2;
  --plate: #f6f7f8;
  --card: #fbfcfc;
  --ink: #1b1f24;
  --ink-2: #3a424b;
  --muted: #59616a;
  --line: #c6ccd2;
  --line-2: #dfe3e7;
  --cyan: #0aa5d8;
  --cyan-ink: #056d93;
  --cyan-wash: #e2f2f8;
  --warn: #9a4321;
  --sand: #d9c4a0;
  --charcoal: #3b3b40;
  --pearl: #f1eee7;
  --terracotta: #c4683f;
  --font: 'Schibsted Grotesk', 'Almarai', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'Geist Mono', ui-monospace, 'SFMono-Regular', Menlo, Consolas, 'Almarai', monospace;
  --hdr: 65px;
  --gut: 16px;

  /* shared "See it in your room" viewer */
  --rv-bg: #eef0f2;
  --rv-surface: #f8f9fa;
  --rv-text: #1b1f24;
  --rv-muted: #59616a;
  --rv-line: #1b1f24;
  --rv-accent: #1b1f24;
  --rv-accent-text: #ffffff;
  --rv-radius: 2px;
  --rv-font: 'Schibsted Grotesk', 'Almarai', system-ui, sans-serif;
  --rv-font-display: 'Schibsted Grotesk', 'Almarai', system-ui, sans-serif;
}
@media (min-width: 768px) { :root { --gut: 32px; } }
@media (min-width: 1280px) { :root { --gut: 48px; } }
html[lang='ar'] { --font: 'Almarai', 'Schibsted Grotesk', system-ui, sans-serif; --rv-font: 'Almarai', system-ui, sans-serif; --rv-font-display: 'Almarai', system-ui, sans-serif; }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; overflow-x: clip; }
html.rm { scroll-behavior: auto; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 16px/1.55 var(--font);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
html[lang='ar'] body { line-height: 1.7; }
html[lang='ar'] * { letter-spacing: 0 !important; }
img, svg { display: block; }
a { color: inherit; }
button { font: inherit; }
h1, h2, h3, p { overflow-wrap: break-word; }
:focus-visible { outline: 2px solid var(--cyan-ink); outline-offset: 3px; }
.sr-only { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip { position: absolute; inset-inline-start: 12px; top: -60px; z-index: 100; background: var(--ink); color: #fff; padding: 10px 14px; text-decoration: none; font-weight: 600; }
.skip:focus { top: 12px; }
.defs { position: absolute; width: 0; height: 0; overflow: hidden; }
.wrap { width: 100%; max-width: 1340px; margin-inline: auto; padding-inline: var(--gut); }
.ico { width: 20px; height: 20px; flex: none; }

.gridpaper {
  background-color: var(--plate);
  background-image:
    linear-gradient(rgba(27, 31, 36, 0.075) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 31, 36, 0.075) 1px, transparent 1px),
    linear-gradient(rgba(27, 31, 36, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 31, 36, 0.035) 1px, transparent 1px);
  background-size: 100px 100px, 100px 100px, 20px 20px, 20px 20px;
  background-position: -1px -1px;
}

/* ---------------- Type ---------------- */
.mono { font-family: var(--mono); }
h2 { font: 700 clamp(30px, 1.5rem + 1.9vw, 52px)/1.03 var(--font); letter-spacing: -0.032em; margin: 0; text-wrap: balance; }
html[lang='ar'] h2 { line-height: 1.3; font-weight: 800; }
.tag { display: inline-block; font: 600 10px/1 var(--mono); letter-spacing: 0.07em; text-transform: uppercase; color: var(--cyan-ink); border: 1px solid currentColor; padding: 4px 6px; white-space: nowrap; }

/* ---------------- Buttons ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 50px; padding: 0 22px;
  border: 1px solid var(--ink); border-radius: 2px;
  background: transparent; color: var(--ink);
  font: 600 15.5px/1.2 var(--font); text-decoration: none; cursor: pointer;
  transition: background-color 0.2s, color 0.2s, box-shadow 0.2s;
}
.btn:hover { background: var(--card); box-shadow: 4px 4px 0 var(--line); }
html[dir='rtl'] .btn:hover { box-shadow: -4px 4px 0 var(--line); }
.btn--ink { background: var(--ink); color: #fff; }
.btn--ink:hover { background: #000; }
.btn .ico { width: 18px; height: 18px; }
.btn[disabled] { opacity: 0.5; cursor: not-allowed; }

/* ---------------- Header ---------------- */
.strip { border-bottom: 1px solid var(--line); font: 500 11px/1 var(--mono); color: var(--muted); letter-spacing: 0.04em; }
.strip__in { display: flex; gap: 28px; height: 30px; align-items: center; white-space: nowrap; overflow: hidden; }
.strip__c { margin-inline-start: auto; }
@media (max-width: 760px) { .strip { display: none; } }

.hdr { position: sticky; top: 0; z-index: 40; background: rgba(238, 240, 242, 0.92); backdrop-filter: saturate(1.2) blur(10px); -webkit-backdrop-filter: saturate(1.2) blur(10px); border-bottom: 1px solid var(--ink); }
.hdr__bar { height: 64px; display: flex; align-items: center; gap: 22px; }
.logo { display: inline-flex; align-items: center; gap: 9px; color: var(--ink); text-decoration: none; font: 750 18.5px/1 var(--font); letter-spacing: -0.025em; white-space: nowrap; flex: none; }
.logo__mark { width: 30px; height: 30px; flex: none; }
.logo__fill { fill: var(--sand); }
.logo__hatch { stroke: var(--ink); stroke-width: 1.1; fill: none; }
.logo__shell { fill: none; stroke: var(--ink); stroke-width: 1.5; }
.logo__cut { stroke: var(--cyan); stroke-width: 1.4; }
.nav ul { display: flex; gap: 2px; list-style: none; margin: 0; padding: 0; }
.nav a { position: relative; display: block; padding: 8px 10px; color: var(--ink); text-decoration: none; font-weight: 550; font-size: 15px; white-space: nowrap; }
.nav a::after { content: ''; position: absolute; inset-inline: 10px; bottom: 3px; height: 1px; background: var(--ink); transform: scaleX(0); transform-origin: left; transition: transform 0.25s; }
.nav a:hover::after { transform: scaleX(1); }
.nav a[aria-current='page']::after { transform: scaleX(1); height: 2px; background: var(--cyan); }
.search { position: relative; flex: 1; max-width: 290px; margin-inline-start: auto; }
.search .ico { position: absolute; inset-inline-start: 10px; top: 50%; transform: translateY(-50%); width: 16px; height: 16px; color: var(--muted); pointer-events: none; }
.search input { width: 100%; height: 38px; padding-inline: 34px 10px; border: 1px solid var(--line); background: var(--card); color: var(--ink); font: 13px var(--mono); border-radius: 2px; }
.search input::placeholder { color: var(--muted); }
.search input:focus-visible { outline: 2px solid var(--cyan-ink); outline-offset: 1px; border-color: var(--ink); }
.hdr__tools { display: flex; align-items: center; gap: 12px; flex: none; }
.lang { display: inline-flex; border: 1px solid var(--ink); border-radius: 2px; overflow: hidden; flex: none; }
.lang button { appearance: none; border: 0; background: transparent; color: var(--ink); font: 600 12px/1 var(--mono); padding: 0 10px; height: 32px; cursor: pointer; }
.lang button[lang='ar'] { font: 700 13px/1 'Almarai', sans-serif; }
.lang button[aria-pressed='true'] { background: var(--ink); color: #fff; }
.lang button:focus-visible { outline-offset: -4px; outline-color: var(--cyan); }
.cart { display: inline-flex; align-items: center; gap: 7px; height: 38px; padding-inline: 6px; color: var(--ink); text-decoration: none; font: 550 14px var(--font); }
.cart .ico { width: 20px; height: 20px; }
.cart__count { font: 600 12px/1 var(--mono); border: 1px solid var(--ink); padding: 4px 5px; border-radius: 2px; min-width: 28px; text-align: center; transition: background-color 0.3s, color 0.3s; }
.cart.is-bump .cart__count { animation: bump 0.7s ease; }
@keyframes bump { 0% { background: var(--cyan); color: #fff; transform: scale(1.18); } 100% { background: transparent; transform: none; } }
.iconbtn { width: 40px; height: 40px; display: inline-grid; place-items: center; border: 1px solid var(--ink); background: transparent; border-radius: 2px; cursor: pointer; color: var(--ink); padding: 0; }
.iconbtn:hover { background: var(--card); }
.menu-btn { display: none; }
.drawer { border-top: 1px solid var(--line); background: var(--paper); padding-block: 8px 20px; }
.drawer ul { list-style: none; margin: 0; padding: 0; }
.drawer a { display: flex; padding: 13px 0; border-bottom: 1px solid var(--line); font-size: 19px; font-weight: 650; color: var(--ink); text-decoration: none; }
.search--drawer { max-width: none; margin: 16px 0 0; }
.search--drawer input { height: 46px; font-size: 15px; }
@media (max-width: 1100px) { .nav { display: none; } .menu-btn { display: inline-grid; } }
@media (max-width: 760px) {
  .hdr__bar { gap: 8px; height: 56px; }
  :root { --hdr: 57px; }
  .hdr__bar > .search { display: none; }
  .hdr__tools { gap: 6px; margin-inline-start: auto; }
  .cart__word { display: none; }
  .cart { padding-inline: 2px; }
  .logo { font-size: 16.5px; gap: 7px; }
  .logo__mark { width: 26px; height: 26px; }
  .lang button { padding: 0 8px; height: 34px; }
  .iconbtn { width: 38px; height: 38px; }
}

/* ---------------- Hero + method (sticky plate) ---------------- */
.lab {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  grid-template-areas: 'copy stage' 'steps stage';
  column-gap: clamp(28px, 4vw, 64px);
}
.lab__copy { grid-area: copy; min-height: calc(100svh - var(--hdr) - 31px); display: flex; flex-direction: column; justify-content: center; padding-block: 40px 56px; }
.lab__stage { grid-area: stage; position: sticky; top: calc(var(--hdr) + 16px); align-self: start; height: calc(100svh - var(--hdr) - 62px); min-height: 520px; max-height: 920px; margin: 16px 0 0; z-index: 2; }
.lab__steps { grid-area: steps; padding-bottom: 12vh; }

.eyebrow { display: inline-flex; align-items: center; gap: 10px; margin: 0 0 24px; font: 600 12px/1 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; }
.eyebrow__no { padding: 5px 6px; background: var(--ink); color: #fff; letter-spacing: 0.06em; }
.lab__copy { container-type: inline-size; }
.hero__title { font: 750 clamp(34px, 10.6cqi, 86px)/0.95 var(--font); letter-spacing: -0.048em; margin: 0; }
.hero__t2 { position: relative; display: inline-block; padding-bottom: 0.06em; white-space: nowrap; }
.hero__t2::after {
  content: ''; position: absolute; inset-inline: 0.02em 0.1em; bottom: -0.16em; height: 0.16em;
  border-inline: 1.5px solid var(--cyan);
  background: linear-gradient(var(--cyan), var(--cyan)) center / 100% 1.5px no-repeat;
}
html[lang='ar'] .hero__title { line-height: 1.25; font-weight: 800; }
.hero__where { font: 650 19px/1.35 var(--font); margin: 34px 0 0; letter-spacing: -0.01em; }
.hero__lede { font-size: 17.5px; color: var(--ink-2); max-width: 46ch; margin: 10px 0 0; }
.ctas { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.facts { display: flex; flex-wrap: wrap; margin: 36px 0 0; border-top: 1px solid var(--ink); }
.facts div { padding: 10px 0 0; padding-inline-end: 18px; }
.facts div + div { padding-inline-start: 18px; border-inline-start: 1px solid var(--line); }
.facts dt { font: 500 10.5px/1.3 var(--mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
.facts dd { margin: 4px 0 0; font: 650 17px/1.2 var(--font); white-space: nowrap; }
.hero__scroll { display: flex; align-items: center; gap: 12px; margin: 34px 0 0; font: 12px/1.4 var(--mono); color: var(--muted); }
.hero__scrollbar { position: relative; width: 1px; height: 34px; background: var(--line); overflow: hidden; flex: none; }
.hero__scrollbar::after { content: ''; position: absolute; left: 0; top: -12px; width: 1px; height: 12px; background: var(--cyan); animation: drip 2.2s cubic-bezier(0.5, 0, 0.3, 1) infinite; }
@keyframes drip { to { transform: translateY(46px); } }
.rm .hero__scrollbar::after { animation: none; top: 11px; }

/* the plate */
.plate { position: relative; height: 100%; display: flex; flex-direction: column; border: 1px solid var(--ink); background: var(--plate); }
.plate__head { display: flex; align-items: center; gap: 14px; height: 36px; padding-inline: 12px; border-bottom: 1px solid var(--ink); font: 500 11px/1 var(--mono); letter-spacing: 0.06em; text-transform: uppercase; white-space: nowrap; background: var(--card); }
.plate__no { font-weight: 600; }
.plate__title { flex: 1; min-width: 0; text-align: center; overflow: hidden; text-overflow: ellipsis; }
.plate__title b { font-weight: 600; }
.plate__mat { display: inline-flex; align-items: center; gap: 6px; }
.plate__mat i, .chip { width: 11px; height: 11px; flex: none; display: inline-block; background: var(--c); border: 1px solid var(--ink); }
.plate__view { position: relative; flex: 1; min-height: 0; overflow: hidden; }
.plate__canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.plate__svg { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; overflow: visible; }
.plate__foot { display: flex; justify-content: space-between; align-items: center; gap: 12px; min-height: 34px; padding: 6px 12px; border-top: 1px solid var(--ink); font: 11px/1.3 var(--mono); color: var(--ink-2); background: var(--card); }
.plate__foot > :first-child { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.plate__hint { color: var(--muted); white-space: nowrap; }
@media (hover: none), (max-width: 899px) { .plate__hint { display: none; } }
.plate__fallback { display: none; }
.no-3d .plate__fallback { position: absolute; inset: 6% 12% 4%; display: grid; grid-template-rows: 1fr auto; gap: 10px; place-items: center; text-align: center; }
.no-3d .plate__fallback .art { width: 100%; height: 100%; }
.no-3d .plate__fallback p { margin: 0; font: 12px var(--mono); color: var(--muted); }
.no-3d .co, .no-3d .loupe { display: none; }

/* callouts */
.co { position: absolute; z-index: 2; width: var(--cow, 158px); display: grid; gap: 1px; padding-bottom: 7px; border-bottom: 1px solid var(--ink); pointer-events: none; opacity: 0; visibility: hidden; }
.co--b { padding: 7px 0 0; border-bottom: 0; border-top: 1px solid var(--ink); }
.co--tl { top: 14px; inset-inline-start: 34px; }
.co--tr { top: 14px; inset-inline-end: 16px; text-align: end; }
.co--bl { bottom: 14px; inset-inline-start: 34px; }
.co--br { bottom: 14px; inset-inline-end: 16px; text-align: end; }
.co__k { font: 500 10.5px/1.3 var(--mono); letter-spacing: 0.07em; text-transform: uppercase; color: var(--muted); }
.co__v { font: 680 19px/1.15 var(--font); letter-spacing: -0.012em; color: var(--ink); font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.co__s { font: 11px/1.35 var(--mono); color: var(--ink-2); }
.lead polyline { fill: none; stroke: var(--ink); stroke-width: 1; }
.lead__ring { fill: rgba(246, 247, 248, 0.55); stroke: var(--cyan); stroke-width: 1.6; }
.lead__dot { fill: var(--ink); }
.ruler path { stroke: var(--ink); stroke-width: 1; fill: none; opacity: 0.75; }
.ruler text { font: 500 9.5px var(--mono); fill: var(--ink-2); }
.ruler .ruler__u { fill: var(--muted); }
.zmark path { fill: var(--cyan); }
.zmark text { font: 600 10px var(--mono); fill: var(--cyan-ink); }
.loupe-lead line { stroke: var(--cyan); stroke-width: 1.1; stroke-dasharray: 3 2.5; }
.loupe-lead circle { fill: none; stroke: var(--cyan); stroke-width: 1.5; }
.loupe-lead text { font: 700 10px var(--mono); fill: var(--cyan-ink); text-anchor: middle; }
.dims__line { stroke: var(--cyan); stroke-width: 1.3; fill: none; }
.dims__ext { stroke: var(--cyan); stroke-width: 0.8; opacity: 0.7; fill: none; }
.dims__t { font: 600 12px var(--mono); fill: var(--cyan-ink); text-anchor: middle; }

/* detail loupe (the 3D pass draws inside the circle; corners are masked to the plate color) */
.loupe { position: absolute; left: 0; top: 0; z-index: 3; width: var(--d, 148px); height: var(--d, 148px); pointer-events: none; opacity: 0; visibility: hidden; background: radial-gradient(circle closest-side, transparent calc(100% - 0.5px), var(--plate) 100%); }
.loupe::before { content: ''; position: absolute; inset: 0; border-radius: 50%; border: 1.5px solid var(--ink); box-shadow: 0 0 0 5px rgba(246, 247, 248, 0.92), 0 0 0 6px var(--line), 0 12px 28px rgba(27, 31, 36, 0.18); }
.loupe__ret { position: absolute; inset: 0; background: linear-gradient(var(--cyan), var(--cyan)) center / 1px 16px no-repeat, linear-gradient(var(--cyan), var(--cyan)) center / 16px 1px no-repeat; opacity: 0.85; }
.loupe__scale { position: absolute; left: 50%; bottom: 13%; transform: translateX(-50%); display: grid; justify-items: center; gap: 2px; font: 600 9px/1 var(--mono); color: var(--ink); background: rgba(246, 247, 248, 0.86); padding: 3px 5px 2px; }
.loupe__scale i { display: block; width: var(--mm2, 30px); height: 4px; border: 1px solid var(--ink); border-top: 0; }
.loupe__tag { position: absolute; left: 50%; top: calc(100% + 12px); transform: translateX(-50%); white-space: nowrap; font: 600 10px/1 var(--mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--cyan-ink); background: var(--plate); border: 1px solid var(--cyan); padding: 4px 6px; }

/* the four steps */
.sechead { display: grid; gap: 12px; max-width: 760px; margin-bottom: 28px; }
.sechead__no { display: flex; align-items: center; gap: 10px; margin: 0; font: 500 12px/1.2 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.sechead__no::after { content: ''; width: 44px; height: 1px; background: var(--cyan); }
.sechead__sub { margin: 0; color: var(--ink-2); font-size: 17px; max-width: 60ch; }
.sechead--steps { padding-top: 24px; margin-bottom: 8px; }
.steps { list-style: none; margin: 0; padding: 0; }
.step { min-height: 74vh; display: grid; grid-template-columns: 60px minmax(0, 1fr); gap: 18px; align-content: center; border-top: 1px solid var(--line); padding-block: 36px; transition: opacity 0.45s; }
.step__n { width: 46px; height: 46px; display: grid; place-items: center; border: 1px solid var(--ink); border-radius: 50%; font: 600 13px/1 var(--mono); transition: background-color 0.35s, color 0.35s, box-shadow 0.35s; }
.step.is-active .step__n { background: var(--ink); color: #fff; box-shadow: 0 0 0 4px var(--paper), 0 0 0 5px var(--cyan); }
.step__of { margin: 0 0 8px; font: 500 11px/1.3 var(--mono); letter-spacing: 0.07em; text-transform: uppercase; color: var(--cyan-ink); }
.step h3 { margin: 0 0 12px; font: 700 clamp(26px, 1.1rem + 1.5vw, 40px)/1.06 var(--font); letter-spacing: -0.028em; }
html[lang='ar'] .step h3 { line-height: 1.3; }
.step p:last-child { margin: 0; color: var(--ink-2); max-width: 42ch; font-size: 17px; }
html:not(.rm) .step:not(.is-active) { opacity: 0.45; }

@media (max-width: 899px) {
  :root { --stage-h: max(400px, min(60svh, 520px)); }
  .lab { grid-template-columns: minmax(0, 1fr); grid-template-areas: 'copy' 'steps'; }
  .lab__copy { min-height: 0; padding-block: 28px 26px; }
  .lab__stage { grid-area: steps; top: var(--hdr); height: var(--stage-h); min-height: 0; margin: 0; padding-block: 0 10px; background: var(--paper); }
  .lab__steps { padding-top: calc(var(--stage-h) + 12px); padding-bottom: 8vh; }
  .step { min-height: 62vh; align-content: start; grid-template-columns: 50px minmax(0, 1fr); gap: 12px; padding-block: 22px; }
  .step__n { width: 40px; height: 40px; }
  .hero__scroll { display: none; }
  .facts { margin-top: 26px; }
  .co { --cow: 112px; }
  .co__v { font-size: 15px; }
  .co__s { display: none; }
  .co__k { font-size: 9.5px; }
  .co--tl, .co--bl { inset-inline-start: 30px; }
  .co--tr, .co--br { inset-inline-end: 10px; }
  .loupe__tag { font-size: 9px; top: calc(100% + 9px); }
  .plate__title { display: none; }
  .plate__head { justify-content: space-between; }
}
.rm .lab__stage { position: relative; top: auto; }
@media (max-width: 899px) {
  .rm .lab { grid-template-areas: 'copy' 'stage' 'steps'; }
  .rm .lab__stage { grid-area: stage; }
  .rm .lab__steps { padding-top: 20px; }
  .rm .step { min-height: 0; }
}
.rm .step { min-height: 0; padding-block: 28px; }

/* ---------------- Sections ---------------- */
.section { padding-top: clamp(72px, 9vw, 128px); }
.rule {
  height: 12px; margin-bottom: 28px; border-bottom: 1px solid var(--ink);
  background:
    repeating-linear-gradient(to right, var(--ink) 0 1px, transparent 1px 8px) bottom / 100% 5px no-repeat,
    repeating-linear-gradient(to right, var(--ink) 0 1px, transparent 1px 80px) bottom / 100% 12px no-repeat;
}
.grid { display: grid; gap: 20px; }
.grid--col { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid--trend { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 1100px) { .grid--col { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 900px) { .grid--trend { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 640px) {
  .grid--col { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .grid--trend { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
}

/* specimen label cards */
.spec { position: relative; display: flex; flex-direction: column; background: var(--card); border: 1px solid var(--ink); transition: border-color 0.2s, box-shadow 0.25s; }
.spec::before { content: ''; position: absolute; inset: 3px; border: 1px solid var(--line-2); pointer-events: none; }
.spec:hover { box-shadow: 5px 5px 0 var(--line); }
html[dir='rtl'] .spec:hover { box-shadow: -5px 5px 0 var(--line); }
.spec__top { position: relative; display: flex; justify-content: space-between; align-items: center; gap: 8px; padding: 11px 12px; border-bottom: 1px solid var(--ink); font: 500 11px/1 var(--mono); letter-spacing: 0.06em; }
.spec__no { font-weight: 600; }
.mat { display: inline-flex; align-items: center; gap: 6px; font: 600 11px/1 var(--mono); letter-spacing: 0.06em; }
.mat i { width: 10px; height: 10px; border-radius: 50%; background: var(--c); box-shadow: inset 0 0 0 1px rgba(27, 31, 36, 0.6); }
.spec__art { position: relative; display: block; aspect-ratio: 4 / 3; border-bottom: 1px solid var(--line); overflow: hidden; }
.spec--lg .spec__art { aspect-ratio: 1 / 0.84; }
.spec__art .art { position: absolute; inset: 6%; width: 88%; height: 88%; transition: transform 0.5s cubic-bezier(0.2, 0.7, 0.2, 1); }
.spec:hover .spec__art .art { transform: scale(1.035); }
.spec__art::after { content: ''; position: absolute; inset: 8px; border: 1px dashed transparent; transition: border-color 0.25s; pointer-events: none; }
.spec:hover .spec__art::after { border-color: var(--cyan); }
.spec__body { display: grid; gap: 6px; align-content: start; flex: 1; padding: 14px 14px 12px; }
.spec__name { margin: 0; font: 650 17px/1.22 var(--font); letter-spacing: -0.012em; }
.spec__name a { color: inherit; text-decoration: none; }
.spec__name a::after { content: ''; position: absolute; inset: 0; }
.spec__name a:focus-visible { outline: none; }
.spec:has(.spec__name a:focus-visible) { outline: 2px solid var(--cyan-ink); outline-offset: 3px; }
.spec__desc { margin: 0; color: var(--ink-2); font-size: 14.5px; line-height: 1.45; }
.spec__data { display: grid; margin: 8px 0 0; font: 12px/1.3 var(--mono); }
.spec__data div { display: flex; justify-content: space-between; gap: 12px; padding: 6px 0; border-top: 1px dotted var(--line); }
.spec__data dt { color: var(--muted); }
.spec__data dd { margin: 0; text-align: end; }
.spec__by { margin: 0; font: 12px/1.35 var(--mono); color: var(--muted); }
.spec__meta { display: flex; gap: 12px; margin: 2px 0 0; font: 12px/1.3 var(--mono); color: var(--ink-2); }
.spec__meta span + span { padding-inline-start: 12px; border-inline-start: 1px solid var(--line); }
.spec__foot { position: relative; display: flex; justify-content: space-between; align-items: center; gap: 8px; padding: 10px 12px; border-top: 1px solid var(--ink); }
.price { font: 700 17px/1.1 var(--font); font-variant-numeric: tabular-nums; white-space: nowrap; }
.add { position: relative; z-index: 1; width: 38px; height: 38px; display: inline-grid; place-items: center; border: 1px solid var(--ink); background: var(--card); color: var(--ink); border-radius: 2px; cursor: pointer; padding: 0; transition: background-color 0.2s, color 0.2s; }
.add:hover { background: var(--ink); color: #fff; }
.add.is-done { background: var(--cyan-ink); border-color: var(--cyan-ink); color: #fff; }
@media (max-width: 640px) {
  .grid--trend .spec__top { padding: 9px 9px; font-size: 10px; }
  .grid--trend .mat { font-size: 10px; }
  .grid--trend .spec__body { padding: 11px 10px 10px; }
  .grid--trend .spec__name { font-size: 15px; }
  .grid--trend .spec__by, .grid--trend .spec__meta { font-size: 11px; }
  .grid--trend .spec__foot { padding: 8px 9px; }
  .grid--trend .price { font-size: 15.5px; }
  .grid--trend .add { width: 34px; height: 34px; }
}

/* taxonomy index */
.taxo { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: 48px; align-items: start; padding-top: 30px; border-top: 1px solid var(--ink); }
.taxo .sechead { margin: 0; }
.taxo__list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; column-gap: 32px; border-top: 1px solid var(--ink); }
.taxo__row { display: grid; grid-template-columns: auto auto minmax(0, 1fr) auto; align-items: center; gap: 14px; padding: 18px 2px; border-bottom: 1px solid var(--line); color: var(--ink); text-decoration: none; }
.taxo__code { font: 500 11px/1 var(--mono); color: var(--muted); letter-spacing: 0.04em; min-width: 4.6em; white-space: nowrap; }
.taxo__ico { width: 44px; height: 44px; display: grid; place-items: center; border: 1px solid var(--ink); border-radius: 50%; background: var(--card); transition: background-color 0.2s, color 0.2s; }
.taxo__ico .ico { width: 22px; height: 22px; }
.taxo__name b { display: block; font: 650 18px/1.22 var(--font); letter-spacing: -0.01em; }
.taxo__name small { display: block; margin-top: 3px; font: 12px/1.4 var(--mono); color: var(--muted); }
.taxo__dots { display: none; }
.taxo__go { color: var(--muted); transition: transform 0.25s, color 0.25s; }
.taxo__go .ico { width: 18px; height: 18px; }
html[dir='rtl'] .taxo__go .ico, html[dir='rtl'] .flip .ico { transform: scaleX(-1); }
.taxo__row:hover .taxo__ico { background: var(--ink); color: #fff; }
.taxo__row:hover .taxo__go { color: var(--cyan-ink); transform: translateX(4px); }
html[dir='rtl'] .taxo__row:hover .taxo__go { transform: translateX(-4px); }
@media (max-width: 900px) { .taxo { grid-template-columns: minmax(0, 1fr); gap: 24px; } }
@media (max-width: 640px) { .taxo__list { grid-template-columns: minmax(0, 1fr); } .taxo__row { gap: 12px; padding-block: 14px; } .taxo__code { display: none; } }

/* seller band: a short lab protocol in a hatched section frame */
.band { padding: 12px; border: 1px solid var(--ink); background: repeating-linear-gradient(45deg, rgba(27, 31, 36, 0.55) 0 1px, transparent 1px 7px), var(--paper); }
.band__inner { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 4fr) minmax(0, 4fr); gap: 40px; padding: clamp(24px, 4vw, 52px); background: var(--card); border: 1px solid var(--ink); }
.band__pitch .sechead__no { margin-bottom: 14px; }
.band h2 { font-size: clamp(38px, 1.8rem + 2.6vw, 66px); }
.band__text { margin: 16px 0 0; font-size: 18px; color: var(--ink-2); max-width: 36ch; }
.protocol { list-style: none; margin: 0; padding: 0; align-self: start; border-top: 1px solid var(--ink); }
.protocol li { display: grid; grid-template-columns: 42px minmax(0, 1fr); gap: 10px; padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 15.5px; line-height: 1.45; }
.protocol__n { font: 600 12px/1.6 var(--mono); color: var(--cyan-ink); }
.worked { align-self: start; border: 1px solid var(--ink); background: var(--plate); }
.worked__t { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin: 0; padding: 10px 12px; border-bottom: 1px solid var(--ink); font: 500 11px/1.35 var(--mono); letter-spacing: 0.04em; text-transform: uppercase; }
.worked__tbl { margin: 0; padding: 4px 12px 10px; font: 13px/1.3 var(--mono); }
.worked__tbl div { display: flex; justify-content: space-between; gap: 10px; padding: 7px 0; border-bottom: 1px dotted var(--line); }
.worked__tbl dt { color: var(--ink-2); }
.worked__tbl dd { margin: 0; font-weight: 600; white-space: nowrap; }
.worked__tbl .is-you dd, .worked__tbl .is-you dt { color: var(--cyan-ink); }
.worked__bar { display: flex; height: 14px; margin: 2px 12px 14px; border: 1px solid var(--ink); }
.worked__bar span { flex: 0 0 var(--w); background: repeating-linear-gradient(45deg, rgba(27, 31, 36, 0.6) 0 1px, transparent 1px 5px); }
.worked__bar span + span { border-inline-start: 1px solid var(--ink); }
.worked__bar .is-you { background: var(--cyan); }
@media (max-width: 1100px) { .band__inner { grid-template-columns: 1fr 1fr; } .band__pitch { grid-column: 1 / -1; } }
@media (max-width: 700px) { .band { padding: 8px; } .band__inner { grid-template-columns: minmax(0, 1fr); gap: 28px; padding: 24px 16px; } }

/* trust */
.trust { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.trust__item { display: grid; gap: 8px; align-content: start; padding: 24px 22px 28px; border-inline-start: 1px solid var(--line); }
.trust__item:first-child { border-inline-start: 0; padding-inline-start: 0; }
.trust__no { font: 500 11px/1 var(--mono); color: var(--muted); letter-spacing: 0.05em; }
.trust__ico .ico { width: 30px; height: 30px; margin-top: 6px; }
.trust__item h3 { margin: 4px 0 0; font: 650 18px/1.25 var(--font); letter-spacing: -0.01em; }
.trust__item p { margin: 0; color: var(--ink-2); font-size: 14.5px; }
@media (max-width: 900px) {
  .trust { grid-template-columns: 1fr 1fr; }
  .trust__item:nth-child(3) { border-inline-start: 0; padding-inline-start: 0; }
  .trust__item:nth-child(n + 3) { border-top: 1px solid var(--line); }
}
@media (max-width: 560px) {
  .trust { grid-template-columns: minmax(0, 1fr); }
  .trust__item { border-inline-start: 0; padding-inline: 0; border-top: 1px solid var(--line); }
  .trust__item:first-child { border-top: 0; }
}

/* ---------------- Footer ---------------- */
.foot { margin-top: clamp(80px, 10vw, 140px); padding-block: 48px 28px; border-top: 1px solid var(--ink); background: var(--plate); }
.foot__grid { display: grid; grid-template-columns: minmax(0, 2fr) repeat(4, minmax(0, 1fr)); gap: 32px; }
.foot h2 { margin: 0 0 12px; font: 500 11px/1.3 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.foot ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.foot a { color: var(--ink); text-decoration: none; }
.foot ul a:hover { text-decoration: underline; text-decoration-color: var(--cyan); text-underline-offset: 4px; }
.foot__brand p { margin: 12px 0 0; color: var(--ink-2); }
.foot__brand .foot__url { margin-top: 6px; font: 12px var(--mono); color: var(--muted); }
.foot__base { display: flex; flex-wrap: wrap; gap: 8px 28px; margin-top: 40px; padding-top: 18px; border-top: 1px solid var(--line); font: 12px/1.5 var(--mono); color: var(--muted); }
@media (max-width: 900px) { .foot__grid { grid-template-columns: 1fr 1fr; } .foot__brand { grid-column: 1 / -1; } }

/* toast */
.toast { position: fixed; left: 50%; bottom: 22px; z-index: 60; display: flex; align-items: center; gap: 10px; max-width: calc(100vw - 32px); padding: 12px 16px; background: var(--ink); color: #fff; font: 13px/1.35 var(--mono); border-inline-start: 4px solid var(--cyan); transform: translate(-50%, 24px); opacity: 0; pointer-events: none; transition: transform 0.35s cubic-bezier(0.2, 0.8, 0.2, 1), opacity 0.35s; }
.toast.is-on { transform: translate(-50%, 0); opacity: 1; }
.toast .ico { width: 18px; height: 18px; color: var(--cyan); }

/* ---------------- Line art ---------------- */
.art { display: block; width: 100%; height: 100%; overflow: visible; }
.art * { vector-effect: non-scaling-stroke; }
.art .s { stroke: var(--ink); stroke-width: 1; stroke-linejoin: round; stroke-linecap: round; }
.art .n { fill: none; }
.art .h { fill: var(--plate); stroke: var(--ink); stroke-width: 0.8; stroke-linejoin: round; }
.art .lt { fill: #fff; fill-opacity: 0.34; }
.art .dk { fill: #000; fill-opacity: 0.15; }
.art .hatch { fill: url(#dce-hatch); }
.art .gnd { stroke: var(--ink); stroke-width: 1; fill: none; }
.art .gnd2 { stroke: var(--ink); stroke-width: 0.7; opacity: 0.45; fill: none; }
.art .dim { stroke: var(--cyan); stroke-width: 1; fill: none; }
.art .ext { stroke: var(--cyan); stroke-width: 0.7; fill: none; opacity: 0.75; }
.art .dimt { fill: var(--cyan-ink); font: 600 6.5px var(--mono); }
.art .wave { stroke: var(--ink); stroke-width: 0.7; fill: none; opacity: 0.4; }
.art .seg { stroke: var(--plate); stroke-width: 1.4; fill: none; }
.art .joint { fill: var(--plate); stroke: var(--ink); stroke-width: 0.7; }
.art .pen { stroke: var(--ink); stroke-width: 2.4; stroke-linecap: round; fill: none; }
.art .mesh { stroke: var(--cyan); stroke-width: 0.7; fill: none; }
.art .mesh--o { stroke: var(--cyan-ink); stroke-width: 1.1; }
.art .vtx rect { fill: var(--plate); stroke: var(--cyan-ink); stroke-width: 0.8; }
.art .slices { stroke: var(--ink); stroke-width: 0.6; opacity: 0.55; fill: none; }
.art .glow { fill: #ffd9a3; stroke: var(--ink); stroke-width: 0.6; }

/* ---------------- Product page ---------------- */
.crumbs { padding-block: 18px 14px; font: 12px/1.4 var(--mono); }
.crumbs ol { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; margin: 0; padding: 0; color: var(--muted); }
.crumbs li + li::before { content: '/'; margin-inline-end: 8px; color: var(--line); }
.crumbs a { color: var(--ink-2); text-decoration: none; }
.crumbs a:hover { text-decoration: underline; text-decoration-color: var(--cyan); }
.pdp { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(24px, 3.5vw, 56px); align-items: start; }
.viewer { margin: 0; position: sticky; top: calc(var(--hdr) + 16px); }
.plate--pdp { height: min(78svh, 760px); min-height: 520px; }
.viewer__canvas { position: absolute; inset: 0; cursor: grab; touch-action: none; }
.viewer__canvas:active { cursor: grabbing; }
.viewer__canvas canvas { display: block; width: 100%; height: 100%; }
.viewer__canvas:focus-visible { outline-offset: -4px; }
.viewer__tools { position: absolute; z-index: 4; inset-inline-end: 12px; bottom: 12px; display: flex; gap: 6px; align-items: center; }
.viewer__tools .iconbtn { background: var(--card); width: 38px; height: 38px; }
.viewer__tools .iconbtn .ico { width: 19px; height: 19px; }
.switch { display: inline-flex; align-items: center; gap: 10px; height: 38px; padding: 0 12px 0 8px; border: 1px solid var(--ink); background: var(--card); color: var(--ink); border-radius: 2px; cursor: pointer; font: 600 12px/1 var(--mono); letter-spacing: 0.05em; text-transform: uppercase; }
.switch__track { position: relative; width: 30px; height: 16px; border: 1px solid var(--ink); border-radius: 9px; background: var(--plate); transition: background-color 0.2s; }
.switch__track::after { content: ''; position: absolute; top: 2px; inset-inline-start: 2px; width: 10px; height: 10px; border-radius: 50%; background: var(--ink); transition: inset-inline-start 0.2s; }
.switch[aria-checked='true'] .switch__track { background: var(--cyan); }
.switch[aria-checked='true'] .switch__track::after { inset-inline-start: 16px; background: #fff; box-shadow: 0 0 0 1px var(--ink); }
.scalebar { display: inline-flex; align-items: flex-end; gap: 8px; font: 11px/1 var(--mono); color: var(--ink-2); white-space: nowrap; }
.scalebar i { display: block; width: var(--sb, 60px); height: 6px; border: 1px solid var(--ink); border-top: 0; background: linear-gradient(90deg, var(--ink) 0 50%, transparent 50%) bottom / 100% 2px no-repeat; }
.viewer__fallback { display: none; }
.no-3d .viewer__fallback { position: absolute; inset: 0; display: grid; place-items: center; padding: 10%; text-align: center; font: 12px var(--mono); color: var(--muted); }
.no-3d .viewer__fallback .art { width: 70%; height: auto; margin-bottom: 12px; }

.buy { display: grid; gap: 0; padding-top: 4px; }
.buy__no { display: flex; gap: 10px; align-items: center; margin: 0 0 14px; font: 500 12px/1.2 var(--mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.buy__no b { color: var(--ink); font-weight: 600; }
.buy__no a { color: var(--cyan-ink); }
.buy h1 { margin: 0; font: 750 clamp(36px, 1.6rem + 2.2vw, 58px)/1 var(--font); letter-spacing: -0.04em; }
html[lang='ar'] .buy h1 { line-height: 1.2; }
.buy__by { margin: 12px 0 0; color: var(--ink-2); }
.buy__price { display: flex; align-items: baseline; gap: 14px; margin: 20px 0 0; padding-bottom: 20px; border-bottom: 1px solid var(--ink); }
.price--xl { font-size: 34px; letter-spacing: -0.02em; }
.buy__block { padding-block: 18px; border-bottom: 1px solid var(--line); }
.buy__label { display: flex; justify-content: space-between; gap: 10px; margin: 0 0 10px; font: 500 11px/1.3 var(--mono); letter-spacing: 0.07em; text-transform: uppercase; color: var(--muted); }
.buy__label b { color: var(--ink); font-weight: 600; }
.matinfo { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 14px; align-items: start; }
.matinfo__tag { font: 700 13px/1 var(--mono); padding: 8px 9px; border: 1px solid var(--ink); background: var(--card); }
.matinfo p { margin: 0; font-size: 15px; color: var(--ink-2); }
.matinfo a { color: var(--cyan-ink); font-weight: 600; }
.swatches { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; }
.swatch { display: grid; gap: 6px; padding: 8px; border: 1px solid var(--line); background: var(--card); border-radius: 2px; cursor: pointer; text-align: start; color: var(--ink); transition: border-color 0.2s, box-shadow 0.2s; }
.swatch i { display: block; height: 34px; background: linear-gradient(rgba(255, 255, 255, 0.22), rgba(0, 0, 0, 0.12)), repeating-linear-gradient(rgba(0, 0, 0, 0.09) 0 1px, transparent 1px 4px), var(--c); border: 1px solid rgba(27, 31, 36, 0.5); }
.swatch__name { font: 600 13px/1.2 var(--font); }
.swatch__hex { font: 10.5px/1 var(--mono); color: var(--muted); text-transform: uppercase; }
.swatch:hover { border-color: var(--ink); }
.swatch[aria-checked='true'] { border-color: var(--ink); box-shadow: inset 0 0 0 1px var(--ink), 0 0 0 3px var(--cyan-wash); }
.swatch[aria-checked='true'] .swatch__hex { color: var(--cyan-ink); }
.pod { display: flex; gap: 10px; align-items: center; margin: 0; padding: 14px 0; border-bottom: 1px solid var(--line); font: 13px/1.4 var(--mono); color: var(--ink); }
.pod .ico { color: var(--cyan-ink); }
.buy__actions { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 10px; padding-top: 20px; }
.qty { display: inline-flex; align-items: center; border: 1px solid var(--ink); border-radius: 2px; height: 50px; background: var(--card); }
.qty button { width: 44px; height: 100%; border: 0; background: transparent; color: var(--ink); cursor: pointer; display: grid; place-items: center; }
.qty button:hover { background: var(--plate); }
.qty output { min-width: 34px; text-align: center; font: 600 15px var(--mono); }
.buy__room { display: grid; gap: 8px; padding-top: 10px; }
.buy__room .btn { width: 100%; }
.buy__size { margin: 0; display: flex; align-items: center; gap: 8px; font: 12px/1.4 var(--mono); color: var(--ink-2); }
.buy__size::before { content: ''; width: 18px; height: 7px; border: 1px solid var(--cyan); border-top: 0; flex: none; }
.pdp-info { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(24px, 3.5vw, 56px); padding-top: clamp(56px, 7vw, 96px); }
.pdp-info h2 { font-size: clamp(26px, 1.2rem + 1.2vw, 36px); margin-bottom: 16px; }
.pdp-info p { margin: 0 0 14px; font-size: 17px; color: var(--ink-2); max-width: 60ch; }
.datasheet { margin: 0; border-top: 1px solid var(--ink); font: 13.5px/1.35 var(--mono); }
.datasheet div { display: flex; justify-content: space-between; gap: 16px; padding: 10px 0; border-bottom: 1px dotted var(--line); }
.datasheet dt { color: var(--muted); }
.datasheet dd { margin: 0; text-align: end; font-weight: 500; }
@media (max-width: 960px) {
  .pdp, .pdp-info { grid-template-columns: minmax(0, 1fr); }
  .viewer { position: relative; top: auto; }
  .plate--pdp { height: min(62svh, 520px); min-height: 380px; }
}
@media (max-width: 520px) {
  .swatches { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .viewer__tools { inset-inline-end: 8px; bottom: 8px; gap: 4px; }
  .viewer__tools .iconbtn { width: 34px; height: 34px; }
  .switch { height: 34px; padding-inline: 6px 9px; gap: 7px; font-size: 11px; }
  .plate--pdp .co { --cow: 104px; }
}

/* ---------------- Sell page ---------------- */
.shero { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: clamp(28px, 4vw, 64px); align-items: center; padding-block: clamp(36px, 6vw, 80px) 0; }
.shero h1 { margin: 0; font: 750 clamp(40px, 1.4rem + 3.6vw, 78px)/0.98 var(--font); letter-spacing: -0.045em; text-wrap: balance; }
html[lang='ar'] .shero h1 { line-height: 1.25; font-weight: 800; }
.shero__text { margin: 18px 0 0; font-size: 18px; color: var(--ink-2); max-width: 44ch; }
.nolist { margin: 26px 0 0; padding: 0; display: grid; gap: 0; border-top: 1px solid var(--ink); max-width: 420px; }
.nolist dt { margin: 10px 0 6px; font: 500 11px var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.nolist dd { margin: 0; display: flex; align-items: center; gap: 12px; padding: 9px 0; border-bottom: 1px dotted var(--line); font-weight: 600; font-size: 17px; }
.nolist dd .x { position: relative; width: 18px; height: 18px; border: 1px solid var(--ink); flex: none; }
.nolist dd .x::before, .nolist dd .x::after { content: ''; position: absolute; left: 50%; top: 50%; width: 22px; height: 1px; background: var(--ink); transform: translate(-50%, -50%) rotate(45deg); }
.nolist dd .x::after { transform: translate(-50%, -50%) rotate(-45deg); }
.nolist dd span:last-child { text-decoration: line-through; text-decoration-color: var(--cyan); text-decoration-thickness: 2px; }
.prep { margin: 0; border: 1px solid var(--ink); background: var(--plate); }
.prep__grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.prep__cell { position: relative; display: grid; grid-template-rows: 1fr auto; padding: 14px 10px 12px; }
.prep__cell + .prep__cell { border-inline-start: 1px solid var(--line); }
.prep__cell .art { aspect-ratio: 160 / 120; height: auto; }
.prep__cell figcaption, .prep__cap { margin: 8px 0 0; display: flex; gap: 8px; align-items: baseline; font: 12px/1.35 var(--mono); }
.prep__cap b { color: var(--cyan-ink); font-weight: 600; }
.prep__cell + .prep__cell::before { content: ''; position: absolute; top: 42%; inset-inline-start: -8px; width: 14px; height: 14px; background: var(--plate); border: 1px solid var(--ink); transform: rotate(45deg); }
html[dir='rtl'] .prep__cell + .prep__cell::before { transform: rotate(-45deg); }
.prep__cell + .prep__cell::before { border-inline-start: 0; border-bottom: 0; }

.protocol6 { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--ink); }
.protocol6 li { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 14px; padding: 22px 22px 26px 0; border-bottom: 1px solid var(--line); }
.protocol6 li:not(:nth-child(3n + 1)) { padding-inline-start: 22px; border-inline-start: 1px solid var(--line); }
html[dir='rtl'] .protocol6 li { padding: 22px 0 26px 22px; }
html[dir='rtl'] .protocol6 li:not(:nth-child(3n + 1)) { padding-inline-start: 22px; }
.protocol6 .n { font: 600 12px/1 var(--mono); color: var(--cyan-ink); padding-top: 6px; }
.protocol6 .ico { width: 26px; height: 26px; margin-bottom: 10px; }
.protocol6 h3 { margin: 0 0 6px; font: 650 18px/1.25 var(--font); }
.protocol6 p { margin: 0; color: var(--ink-2); font-size: 15px; }
@media (max-width: 900px) {
  .shero { grid-template-columns: minmax(0, 1fr); }
  .protocol6 { grid-template-columns: 1fr 1fr; }
  .protocol6 li, html[dir='rtl'] .protocol6 li { padding: 18px 0; padding-inline-end: 16px; border-inline-start: 0; }
  .protocol6 li:nth-child(even) { padding-inline-start: 16px; border-inline-start: 1px solid var(--line); }
  .protocol6 li:not(:nth-child(3n + 1)) { padding-inline-start: 0; border-inline-start: 0; }
  .protocol6 li:nth-child(even) { padding-inline-start: 16px; border-inline-start: 1px solid var(--line); }
}
@media (max-width: 560px) {
  .protocol6 { grid-template-columns: minmax(0, 1fr); }
  .protocol6 li:nth-child(even) { padding-inline-start: 0; border-inline-start: 0; }
  .prep__cell { padding: 10px 4px 10px; }
  .prep__cell figcaption, .prep__cap { font-size: 10.5px; flex-direction: column; gap: 2px; }
}

/* calculator worksheet */
.calc { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); border: 1px solid var(--ink); background: var(--card); }
.calc__in { padding: clamp(18px, 2.5vw, 32px); border-inline-end: 1px solid var(--ink); display: grid; gap: 26px; align-content: start; }
.calc__out { padding: clamp(18px, 2.5vw, 32px); background: var(--plate); display: grid; gap: 18px; align-content: start; }
.field { border: 0; margin: 0; padding: 0; min-width: 0; display: grid; gap: 12px; }
.field__l { display: flex; align-items: baseline; gap: 10px; padding: 0; margin: 0; font: 600 12px/1.3 var(--mono); letter-spacing: 0.07em; text-transform: uppercase; }
.field__l .n { display: inline-grid; place-items: center; width: 22px; height: 22px; border: 1px solid var(--ink); border-radius: 50%; font-size: 11px; letter-spacing: 0; }
.drop { display: flex; align-items: center; gap: 12px; padding: 14px; border: 1px dashed var(--ink); background: var(--plate); font-size: 14.5px; transition: background-color 0.2s, border-color 0.2s; }
.drop.is-over { background: var(--cyan-wash); border-color: var(--cyan-ink); }
.drop .ico { width: 24px; height: 24px; color: var(--ink-2); }
.drop small { display: block; font: 11.5px/1.4 var(--mono); color: var(--muted); }
.samples { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; }
.sample { position: relative; }
.sample input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.sample__card { display: grid; gap: 4px; height: 100%; padding: 8px; border: 1px solid var(--line); background: var(--plate); cursor: pointer; transition: border-color 0.2s, box-shadow 0.2s; }
.sample__art { display: block; aspect-ratio: 4 / 3; }
.sample__name { font: 600 13px/1.2 var(--font); }
.sample__file { font: 10px/1.3 var(--mono); color: var(--muted); overflow-wrap: anywhere; }
.sample input:checked + .sample__card { border-color: var(--ink); box-shadow: inset 0 0 0 1px var(--ink), 0 0 0 3px var(--cyan-wash); background: var(--card); }
.sample input:focus-visible + .sample__card { outline: 2px solid var(--cyan-ink); outline-offset: 2px; }
.est { display: flex; gap: 10px; align-items: flex-start; margin: 0; padding: 12px 14px; border-inline-start: 3px solid var(--cyan); background: var(--cyan-wash); font: 13px/1.5 var(--mono); }
.est .ico { width: 18px; height: 18px; color: var(--cyan-ink); margin-top: 1px; }
.est.is-reading { color: var(--muted); }
.est.is-reading .ico { animation: spin 0.9s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.seg { display: inline-grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--ink); border-radius: 2px; width: min(100%, 360px); }
.seg label { position: relative; }
.seg input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.seg span { display: grid; gap: 2px; padding: 10px 14px; cursor: pointer; text-align: center; font: 700 15px/1.1 var(--mono); }
.seg span small { font: 10.5px/1.2 var(--mono); color: var(--muted); font-weight: 400; }
.seg label + label span { border-inline-start: 1px solid var(--ink); }
.seg input:checked + span { background: var(--ink); color: #fff; }
.seg input:checked + span small { color: #c9cfd6; }
.seg input:focus-visible + span { outline: 2px solid var(--cyan); outline-offset: -4px; }
.field__help { font: 12px var(--mono); color: var(--cyan-ink); }
.priceIn { display: flex; align-items: stretch; width: min(100%, 360px); border: 1px solid var(--ink); background: var(--card); height: 54px; }
.priceIn span { display: grid; place-items: center; padding: 0 14px; border-inline-end: 1px solid var(--ink); font: 600 13px var(--mono); background: var(--plate); }
.priceIn input { flex: 1; min-width: 0; border: 0; background: transparent; padding: 0 14px; font: 600 22px var(--mono); color: var(--ink); }
.priceIn input:focus-visible { outline: 2px solid var(--cyan-ink); outline-offset: -2px; }
.priceIn.is-bad { border-color: var(--warn); box-shadow: 0 0 0 3px rgba(154, 67, 33, 0.12); }
.suggest { justify-self: start; border: 0; background: none; padding: 0; color: var(--cyan-ink); font: 600 13px var(--mono); text-decoration: underline; text-underline-offset: 3px; cursor: pointer; }
.calc__head { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding-bottom: 12px; border-bottom: 1px solid var(--ink); font: 600 12px var(--mono); letter-spacing: 0.07em; text-transform: uppercase; }
.minbox { display: grid; gap: 2px; }
.minbox__l { font: 500 11px var(--mono); letter-spacing: 0.07em; text-transform: uppercase; color: var(--muted); }
.minbox__v { font: 750 46px/1 var(--font); letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.results { margin: 0; display: grid; font: 14px/1.3 var(--mono); }
.results div { display: flex; justify-content: space-between; gap: 12px; padding: 10px 0; border-bottom: 1px dotted var(--line); }
.results dt { color: var(--ink-2); }
.results dd { margin: 0; font-weight: 600; white-space: nowrap; }
.results .is-you dt, .results .is-you dd { color: var(--cyan-ink); }
.results .is-you dd { font-size: 20px; }
.split { display: grid; gap: 8px; }
.split__bar { display: flex; height: 18px; border: 1px solid var(--ink); background: var(--card); }
.split__bar span { flex: 0 0 0%; transition: flex-basis 0.45s cubic-bezier(0.2, 0.7, 0.2, 1); }
.rm .split__bar span { transition: none; }
.split__bar .b-min { background: repeating-linear-gradient(45deg, rgba(27, 31, 36, 0.6) 0 1px, transparent 1px 5px); }
.split__bar .b-you { background: var(--cyan); }
.split__bar .b-us { background: var(--ink); }
.split__lg { display: flex; flex-wrap: wrap; gap: 6px 14px; font: 11px var(--mono); color: var(--ink-2); }
.split__lg i { display: inline-block; width: 10px; height: 10px; margin-inline-end: 5px; vertical-align: -1px; border: 1px solid var(--ink); }
.msg { display: flex; gap: 10px; align-items: flex-start; margin: 0; padding: 12px 14px; font: 13px/1.45 var(--mono); border: 1px solid var(--ink); background: var(--card); }
.msg .ico { width: 18px; height: 18px; color: var(--cyan-ink); }
.msg.is-bad { border-color: var(--warn); color: var(--warn); background: repeating-linear-gradient(45deg, rgba(154, 67, 33, 0.06) 0 2px, transparent 2px 7px), var(--card); font-weight: 600; }
.msg.is-bad .ico { color: var(--warn); }
.breakdown { border-top: 1px solid var(--ink); }
.breakdown summary { cursor: pointer; padding: 12px 0; font: 600 12px var(--mono); letter-spacing: 0.05em; text-transform: uppercase; }
.breakdown dl { margin: 0 0 6px; font: 12.5px/1.3 var(--mono); }
.breakdown div { display: flex; justify-content: space-between; gap: 10px; padding: 6px 0; border-bottom: 1px dotted var(--line); }
.breakdown dt small { display: block; color: var(--muted); font-size: 11px; margin-top: 2px; }
.breakdown dd { margin: 0; white-space: nowrap; }
.breakdown .total { border-bottom: 1px solid var(--ink); font-weight: 700; }
.calcwrap { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 24px; align-items: start; }
.note { border-top: 3px solid var(--ink); padding-top: 14px; }
.note h3 { margin: 0 0 8px; font: 650 17px/1.3 var(--font); display: flex; gap: 8px; align-items: center; }
.note p { margin: 0; font-size: 15px; color: var(--ink-2); }
.note__fig { margin: 14px 0 0; border: 1px solid var(--line); background: var(--plate); padding: 8px; }
@media (max-width: 1100px) { .calcwrap { grid-template-columns: minmax(0, 1fr); } .note { max-width: 640px; } }
@media (max-width: 860px) { .calc { grid-template-columns: minmax(0, 1fr); } .calc__in { border-inline-end: 0; border-bottom: 1px solid var(--ink); } }
@media (max-width: 560px) { .samples { grid-template-columns: repeat(2, minmax(0, 1fr)); } .minbox__v { font-size: 40px; } }

/* material comparison sheet */
.sheet { border: 1px solid var(--ink); background: var(--card); }
.sheet__head { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 3fr) minmax(0, 3fr); border-bottom: 1px solid var(--ink); }
.sheet__corner { padding: 14px; font: 500 11px/1.4 var(--mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); align-self: end; }
.sheet__mat { display: grid; grid-template-columns: 96px minmax(0, 1fr); gap: 14px; align-items: center; padding: 14px; border-inline-start: 1px solid var(--ink); }
.sheet__mat .art { width: 96px; height: auto; aspect-ratio: 160 / 112; }
.sheet__mat b { display: block; font: 750 30px/1 var(--font); letter-spacing: -0.02em; }
.sheet__mat span { display: block; margin-top: 6px; font-size: 14px; color: var(--ink-2); line-height: 1.4; }
.sheet__row { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 3fr) minmax(0, 3fr); border-bottom: 1px solid var(--line); }
.sheet__row:last-child { border-bottom: 0; }
.sheet__row > * { margin: 0; padding: 13px 14px; }
.sheet__row dt { font: 500 11.5px/1.4 var(--mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.sheet__row dd { border-inline-start: 1px solid var(--line); font-size: 15px; line-height: 1.45; }
.sheet__row dd .lbl { display: none; }
.heat { padding: 18px 14px 14px; border-bottom: 1px solid var(--line); }
.heat__t { margin: 0 0 12px; font: 500 11.5px/1.4 var(--mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.heat svg { width: 100%; height: auto; overflow: visible; }
.heat .ax { stroke: var(--ink); stroke-width: 1; fill: none; }
.heat .tk { stroke: var(--ink); stroke-width: 1; }
.heat text { font: 10.5px var(--mono); fill: var(--ink-2); }
.heat .band-pla { fill: var(--sand); stroke: var(--ink); stroke-width: 1; }
.heat .band-petg { fill: var(--charcoal); stroke: var(--ink); stroke-width: 1; }
.heat .lbl-b { font: 600 11px var(--mono); fill: var(--ink); }
.heat .ok { fill: url(#dce-hatch); opacity: 0.6; }
.tips { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 16px; }
.tip { display: flex; gap: 12px; padding: 16px; border: 1px solid var(--ink); background: var(--card); }
.tip .ico { width: 22px; height: 22px; color: var(--cyan-ink); }
.tip p { margin: 0; font-size: 15px; }
.tip b { font-weight: 700; }
.tip--warn { background: repeating-linear-gradient(45deg, rgba(27, 31, 36, 0.05) 0 2px, transparent 2px 8px), var(--card); }
.tip--warn .ico { color: var(--ink); }
@media (max-width: 760px) {
  .sheet__head { grid-template-columns: 1fr 1fr; }
  .sheet__corner { display: none; }
  .sheet__mat { grid-template-columns: minmax(0, 1fr); gap: 8px; align-items: start; }
  .sheet__mat:first-of-type { border-inline-start: 0; }
  .sheet__mat .art { width: 80px; }
  .sheet__mat b { font-size: 24px; }
  .sheet__row { grid-template-columns: 1fr 1fr; }
  .sheet__row dt { grid-column: 1 / -1; padding-bottom: 0; }
  .sheet__row dd { padding-top: 6px; }
  .sheet__row dd:nth-of-type(1) { border-inline-start: 0; }
  .tips { grid-template-columns: minmax(0, 1fr); }
}

/* rules + CTA */
.rules { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(24px, 4vw, 64px); }
.rules__cols { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.rules__box { border: 1px solid var(--ink); background: var(--card); }
.rules__box h3 { margin: 0; padding: 12px 14px; border-bottom: 1px solid var(--ink); font: 600 12px/1.3 var(--mono); letter-spacing: 0.07em; text-transform: uppercase; display: flex; align-items: center; gap: 8px; }
.rules__box ul { list-style: none; margin: 0; padding: 4px 14px 10px; }
.rules__box li { display: flex; gap: 10px; align-items: flex-start; padding: 10px 0; border-bottom: 1px dotted var(--line); font-size: 15px; }
.rules__box li:last-child { border-bottom: 0; }
.rules__box li .ico { width: 18px; height: 18px; margin-top: 2px; }
.rules__box--ok .ico { color: var(--cyan-ink); }
.rules__box--no h3 { background: repeating-linear-gradient(45deg, rgba(27, 31, 36, 0.08) 0 2px, transparent 2px 7px); }
.scta { margin-top: clamp(56px, 7vw, 96px); display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 24px; align-items: center; padding: clamp(24px, 4vw, 44px); border: 1px solid var(--ink); background: var(--ink); color: #fff; }
.scta h2 { color: #fff; }
.scta p { margin: 10px 0 0; color: #cdd3d9; font-size: 17px; }
.scta .btn { background: #fff; color: var(--ink); border-color: #fff; }
.scta .btn:hover { background: var(--cyan-wash); box-shadow: none; }
.scta small { display: block; margin-top: 8px; font: 11px var(--mono); color: #aab2ba; text-align: center; }
@media (max-width: 860px) { .rules { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 640px) { .rules__cols { grid-template-columns: minmax(0, 1fr); } .scta { grid-template-columns: minmax(0, 1fr); } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

/* calculator note figure */
.note__fig .art { height: auto; aspect-ratio: 160 / 120; }
.note__out { display: grid; gap: 2px; margin: 8px 0 0; font: 11.5px/1.4 var(--mono); color: var(--ink-2); overflow-wrap: anywhere; }
.note__out span:last-child { color: var(--cyan-ink); font-weight: 600; }
.protocol6 li > div > .ico { display: block; }
.co[data-co='print'] { --cow: 216px; }
@media (max-width: 899px) { .co[data-co='print'] { --cow: 150px; } }
.sample__file { font-size: 9.5px; }

/* ---- refinements ---- */
html[lang='ar'] { --mono: 'Almarai', 'Geist Mono', ui-monospace, monospace; }
html[dir='rtl'] .swatch__hex { direction: ltr; text-align: right; }
@media (max-width: 899px) {
  .lab__copy { padding-block: 22px 22px; }
  .hero__where { margin-top: 26px; font-size: 17px; }
  .hero__lede { font-size: 16px; }
  .ctas { margin-top: 20px; }
  .facts { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin-top: 22px; }
  .facts div, .facts div + div { padding: 8px 0 0; padding-inline: 8px 4px; border-inline-start: 1px solid var(--line); }
  .facts div:first-child { padding-inline-start: 0; border-inline-start: 0; }
  .facts dt { font-size: 9.5px; letter-spacing: 0.05em; }
  .facts dd { font-size: 14px; white-space: normal; }
}
@media (max-width: 640px) {
  .taxo__row { grid-template-columns: auto minmax(0, 1fr) auto; }
}
@media (max-width: 760px) {
  .sheet__corner + .sheet__mat { border-inline-start: 0; }
}
.heat__plot { position: relative; max-width: 860px; margin-inline-end: 34px; }
.heat__row { position: relative; height: 26px; margin-bottom: 10px; }
.heat__ok { position: absolute; left: 0; top: 0; bottom: 0; background: repeating-linear-gradient(45deg, rgba(27, 31, 36, 0.32) 0 1px, transparent 1px 6px); border: 1px solid var(--line); border-right: 0; }
.heat__band { position: absolute; top: 0; bottom: 0; border: 1px solid var(--ink); }
.heat__band.is-pla { background: var(--sand); }
.heat__band.is-petg { background: var(--charcoal); }
.heat__lbl { position: absolute; top: 50%; transform: translateY(-50%); margin-right: 8px; padding: 2px 6px; background: var(--card); border: 1px solid var(--ink); font: 600 11.5px/1.2 var(--mono); white-space: nowrap; }
.heat__axis { position: relative; height: 26px; border-top: 1px solid var(--ink); margin-top: 4px; background: repeating-linear-gradient(to right, var(--ink) 0 1px, transparent 1px 10%) top / calc(100% + 1px) 6px no-repeat; }
.heat__axis span { position: absolute; top: 9px; transform: translateX(-50%); font: 11px var(--mono); color: var(--ink-2); }
.heat__axis span:last-child::after { content: ' °C'; }
@media (max-width: 899px) {
  html:not(.rm) .lab__stage { margin-inline: calc(-1 * var(--gut)); padding-inline: var(--gut); }
  html:not(.rm) .step { min-height: max(240px, calc(100svh - var(--hdr) - var(--stage-h))); align-content: center; padding-block: 18px; }
}
.field { grid-template-columns: minmax(0, 1fr); }
.priceIn input { width: 0; }
.plate__svg { direction: ltr; }