:root {
  color-scheme: dark;
  --ink: #07111f;
  --ink-soft: #0b1728;
  --ink-lift: #102238;
  --paper: #f2f6f8;
  --paper-soft: #dfe8ee;
  --muted: #8ea2b4;
  --cyan: #25c2e8;
  --cyan-soft: #84e5f7;
  --gold: #c8a85a;
  --line: rgba(142, 162, 180, 0.2);
  --container: min(1180px, calc(100vw - 40px));
  --radius: 24px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; overflow-x: clip; }

body {
  margin: 0;
  color: var(--paper);
  background: var(--ink);
  overflow-x: clip;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, #000 0%, transparent 78%);
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; }

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  transform: translateY(-150%);
  padding: 10px 14px;
  color: var(--ink);
  background: var(--cyan);
  border-radius: 8px;
}
.skip-link:focus { transform: translateY(0); }

.container { width: var(--container); margin-inline: auto; }

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  border-bottom: 1px solid rgba(255,255,255,.07);
  background: rgba(7, 17, 31, .78);
  backdrop-filter: blur(18px);
}

.nav-shell {
  width: var(--container);
  min-height: 76px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand { display: inline-flex; align-items: center; gap: 12px; min-width: 245px; }
.brand-glyph {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  overflow: hidden;
  border-radius: 12px;
  color: transparent;
  font-size: 0;
  background: url("/assets/matrix-dimension-mark.webp") center / cover no-repeat;
  filter: drop-shadow(0 0 10px rgba(37, 194, 232, .22));
}
.brand-copy { display: grid; gap: 2px; }
.brand-copy strong { font-size: 13px; letter-spacing: .08em; text-transform: uppercase; }
.brand-copy span { color: var(--muted); font-size: 11px; letter-spacing: .12em; }

.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav a { color: var(--paper-soft); font-size: 14px; transition: color .2s ease; }
.main-nav a:hover, .main-nav a:focus-visible { color: var(--cyan-soft); }
.nav-cta { padding: 10px 16px; border: 1px solid rgba(37,194,232,.45); border-radius: 999px; }
.language-link { color: var(--muted) !important; }

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--paper);
  background: transparent;
}

.hero {
  min-height: 100svh;
  padding: 150px 0 86px;
  display: grid;
  align-items: center;
  position: relative;
}

.hero::after {
  content: "";
  position: absolute;
  width: 760px;
  height: 760px;
  right: -190px;
  top: -140px;
  z-index: -1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37,194,232,.16), rgba(24,64,116,.08) 36%, transparent 70%);
  filter: blur(8px);
}

.hero-grid { display: grid; grid-template-columns: 1.04fr .96fr; align-items: center; gap: 6vw; }

.eyebrow {
  margin: 0 0 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 650;
  letter-spacing: .17em;
  text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 34px; height: 1px; background: currentColor; }

h1, h2, h3, p { margin-top: 0; }
h1 {
  max-width: 760px;
  margin-bottom: 26px;
  font-size: clamp(48px, 6.6vw, 88px);
  line-height: .98;
  letter-spacing: -.055em;
  font-weight: 670;
}
.hero-cn h1 { letter-spacing: -.075em; }
.hero-lead {
  max-width: 650px;
  margin-bottom: 34px;
  color: #adc0ce;
  font-size: clamp(17px, 1.5vw, 21px);
  line-height: 1.7;
}

.button-row { display: flex; flex-wrap: wrap; gap: 12px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 48px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 650;
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}
.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--ink); background: var(--cyan); }
.button-secondary { border-color: rgba(255,255,255,.2); background: rgba(255,255,255,.035); }
.button svg { width: 16px; height: 16px; }

.hero-visual {
  position: relative;
  min-height: 610px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.13);
  border-radius: 38px;
  background: linear-gradient(145deg, #f8fafb 0%, #dce4e9 100%);
  box-shadow: 0 35px 90px rgba(0,0,0,.25);
}
.hero-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(7,17,31,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(7,17,31,.045) 1px, transparent 1px);
  background-size: 56px 56px;
}
.hero-orbit {
  position: absolute;
  width: min(600px, 46vw);
  aspect-ratio: 1;
  z-index: 1;
  border: 1px solid rgba(15,91,125,.22);
  border-radius: 50%;
}
.hero-orbit::before, .hero-orbit::after {
  content: "";
  position: absolute;
  inset: 12%;
  border: 1px dashed rgba(119,88,24,.24);
  border-radius: inherit;
}
.hero-orbit::after { inset: 29%; border-style: solid; border-color: rgba(7,17,31,.12); }
.hero-product {
  width: min(620px, 51vw);
  height: auto;
  z-index: 2;
  mix-blend-mode: multiply;
  filter: contrast(1.03) drop-shadow(0 28px 55px rgba(0,0,0,.2));
}
.visual-label {
  position: absolute;
  z-index: 3;
  right: 3%;
  bottom: 9%;
  max-width: 230px;
  padding: 14px 18px;
  border-left: 2px solid var(--cyan);
  color: #b9c9d5;
  background: rgba(7,17,31,.72);
  backdrop-filter: blur(12px);
  font-size: 12px;
  line-height: 1.6;
}

.hero-foot {
  margin-top: 70px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
}
.hero-fact { padding: 21px 24px 0 0; }
.hero-fact span { display: block; color: var(--muted); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; }
.hero-fact strong { display: block; margin-top: 7px; font-size: 15px; font-weight: 550; }

.section { padding: 120px 0; }
.section-light { color: var(--ink); background: var(--paper); }
.section-head { display: grid; grid-template-columns: .8fr 1.2fr; gap: 60px; align-items: end; margin-bottom: 72px; }
.section-head h2 { margin-bottom: 0; font-size: clamp(38px, 5vw, 65px); line-height: 1.04; letter-spacing: -.045em; }
.section-intro { margin-bottom: 4px; color: #607284; font-size: 18px; line-height: 1.7; }
.section:not(.section-light) .section-intro { color: #9fb2c1; }

.product-list { border-top: 1px solid rgba(7,17,31,.14); }
.product-row {
  min-height: 190px;
  padding: 34px 0;
  display: grid;
  grid-template-columns: 54px minmax(140px, 190px) .78fr 1.22fr 40px;
  gap: 28px;
  align-items: center;
  border-bottom: 1px solid rgba(7,17,31,.14);
  transition: padding .25s ease, background .25s ease;
}
.product-row:hover { padding-inline: 18px; background: rgba(37,194,232,.045); }
.product-index { color: #7a8a96; font: 600 13px/1 ui-monospace, monospace; }
.product-thumb { width: 100%; height: 118px; object-fit: cover; border-radius: 16px; background: #dfe8ed; }
.product-thumb-contain { padding: 10px; object-fit: contain; }
.product-title h3 { margin-bottom: 7px; font-size: clamp(24px, 3vw, 38px); letter-spacing: -.035em; }
.product-title span { color: #738391; font-size: 13px; }
.product-description { margin-bottom: 0; color: #526777; line-height: 1.75; }
.product-arrow { width: 38px; height: 38px; display: grid; place-items: center; border: 1px solid rgba(7,17,31,.18); border-radius: 50%; }

.architecture { position: relative; overflow: hidden; }
.architecture-grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: 70px; align-items: center; }
.architecture-copy h2 { font-size: clamp(40px, 5vw, 68px); line-height: 1.04; letter-spacing: -.05em; }
.architecture-copy > p { color: #9fb2c1; font-size: 18px; line-height: 1.75; }
.signal-flow { margin-top: 40px; display: grid; gap: 0; }
.signal-step { padding: 18px 0 18px 28px; position: relative; border-left: 1px solid rgba(37,194,232,.35); }
.signal-step::before { content: ""; position: absolute; left: -5px; top: 26px; width: 9px; height: 9px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 18px var(--cyan); }
.signal-step small { display: block; color: var(--gold); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; }
.signal-step strong { display: block; margin-top: 5px; font-size: 17px; }
.architecture-visual {
  min-height: 650px;
  position: relative;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255,255,255,.09);
  border-radius: 40px;
  overflow: hidden;
  background: radial-gradient(circle at 50% 45%, rgba(37,194,232,.18), transparent 54%), #091423;
}
.architecture-visual img { width: 92%; height: auto; mix-blend-mode: screen; }
.render-badge { position: absolute; left: 24px; bottom: 22px; color: var(--muted); font-size: 11px; letter-spacing: .09em; text-transform: uppercase; }

.evidence-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.evidence-item { min-height: 235px; padding: 30px; background: var(--ink); }
.evidence-item span { color: var(--gold); font: 600 12px/1 ui-monospace, monospace; }
.evidence-item h3 { margin: 70px 0 12px; font-size: 20px; }
.evidence-item p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.65; }

.application-stage {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 620px;
  border-radius: 36px;
  overflow: hidden;
  background: #dbe5ea;
}
.application-copy { padding: clamp(44px, 6vw, 82px); display: flex; flex-direction: column; justify-content: center; }
.application-copy h2 { max-width: 600px; font-size: clamp(38px, 5vw, 66px); line-height: 1.03; letter-spacing: -.05em; }
.application-copy p { color: #536979; font-size: 17px; line-height: 1.75; }
.application-tags { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 9px; }
.application-tags span { padding: 8px 12px; border: 1px solid rgba(7,17,31,.14); border-radius: 999px; color: #3d5362; font-size: 12px; }
.application-panel { padding: 42px; color: var(--paper); background: var(--ink-soft); display: grid; align-content: center; gap: 28px; }
.inspection-line { padding: 22px 0; border-bottom: 1px solid var(--line); }
.inspection-line:last-child { border-bottom: 0; }
.inspection-line small { color: var(--gold); text-transform: uppercase; letter-spacing: .13em; }
.inspection-line strong { display: block; margin-top: 8px; font-size: 21px; }
.inspection-line p { margin: 8px 0 0; color: var(--muted); font-size: 14px; line-height: 1.55; }

.company-band { padding: 120px 0; border-top: 1px solid var(--line); }
.company-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; }
.company-grid h2 { font-size: clamp(38px, 4.5vw, 62px); line-height: 1.05; letter-spacing: -.045em; }
.company-grid p { color: #9fb2c1; line-height: 1.8; font-size: 17px; }
.capability-list { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); }
.capability-list span { padding: 20px 16px 20px 0; border-bottom: 1px solid var(--line); color: var(--paper-soft); font-size: 14px; }

.contact {
  padding: 120px 0;
  color: var(--ink);
  background: var(--cyan);
}
.contact-grid { display: grid; grid-template-columns: 1.35fr .65fr; gap: 60px; align-items: end; }
.contact h2 { max-width: 820px; margin-bottom: 22px; font-size: clamp(46px, 6.5vw, 86px); line-height: .98; letter-spacing: -.06em; }
.contact p { max-width: 720px; margin-bottom: 0; color: #164453; font-size: 18px; line-height: 1.7; }
.contact-action { justify-self: end; }
.contact .button { color: var(--paper); background: var(--ink); }

.site-footer { padding: 42px 0; color: var(--muted); background: #050d17; }
.footer-grid { display: flex; justify-content: space-between; gap: 30px; align-items: center; font-size: 12px; }
.footer-note { max-width: 600px; text-align: right; line-height: 1.6; }

.product-hero { padding: 152px 0 86px; border-bottom: 1px solid var(--line); }
.breadcrumb { margin-bottom: 42px; color: var(--muted); font-size: 13px; }
.breadcrumb a:hover { color: var(--cyan-soft); }
.product-hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 70px; align-items: end; }
.product-hero h1 { margin-bottom: 28px; font-size: clamp(46px, 6.5vw, 84px); }
.product-hero-lead { max-width: 700px; color: #adc0ce; font-size: clamp(18px, 1.7vw, 23px); line-height: 1.65; }
.product-code { align-self: stretch; min-height: 360px; padding: 38px; display: flex; flex-direction: column; justify-content: space-between; border: 1px solid var(--line); border-radius: 30px; background: radial-gradient(circle at 85% 15%, rgba(37,194,232,.18), transparent 43%), var(--ink-soft); }
.product-code small { color: var(--gold); letter-spacing: .14em; text-transform: uppercase; }
.product-code strong { max-width: 420px; font-size: clamp(30px, 3.6vw, 52px); line-height: 1.04; letter-spacing: -.04em; }
.product-code span { color: var(--muted); font: 12px/1.5 ui-monospace, monospace; }
.product-visual { position: relative; padding: 0; overflow: hidden; }
.product-visual::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 38%, rgba(5,13,23,.92) 100%); }
.product-visual img { width: 100%; height: 100%; min-height: 360px; object-fit: cover; }
.product-motion-video { width: 100%; height: 100%; min-height: 360px; display: block; object-fit: cover; }
.product-visual-light img { padding: 26px; object-fit: contain; background: linear-gradient(145deg, #f8fafb, #dce4e9); }
.product-visual-meta { position: absolute; z-index: 2; left: 28px; right: 28px; bottom: 24px; display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; }
.product-visual-meta strong { max-width: 320px; font-size: 19px; line-height: 1.25; letter-spacing: -.02em; }
.product-visual-meta span { flex: none; padding: 7px 10px; border: 1px solid rgba(255,255,255,.22); border-radius: 999px; color: #d8e3ea; background: rgba(7,17,31,.55); font: 10px/1 ui-monospace, monospace; text-transform: uppercase; letter-spacing: .08em; backdrop-filter: blur(8px); }
.detail-section { padding: 105px 0; }
.detail-section-light { color: var(--ink); background: var(--paper); }
.detail-intro { max-width: 820px; margin-bottom: 56px; }
.detail-intro h2 { margin-bottom: 20px; font-size: clamp(38px, 5vw, 64px); line-height: 1.05; letter-spacing: -.045em; }
.detail-intro p { color: var(--muted); font-size: 18px; line-height: 1.75; }
.detail-section-light .detail-intro p { color: #5b7080; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; border: 1px solid var(--line); background: var(--line); }
.feature-card { min-height: 260px; padding: 32px; background: var(--ink); }
.detail-section-light .feature-card { background: #eaf0f3; }
.feature-card span { color: var(--gold); font: 12px/1 ui-monospace, monospace; }
.feature-card h3 { margin: 76px 0 12px; font-size: 22px; }
.feature-card p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.7; }
.detail-section-light .feature-card p { color: #5c7080; }
.control-demo { overflow: hidden; background: radial-gradient(circle at 12% 8%, rgba(37,194,232,.1), transparent 32%), #07111f; }
.control-demo-head { margin-bottom: 46px; display: grid; grid-template-columns: 1.15fr .85fr; gap: 72px; align-items: end; }
.control-demo-head h2 { max-width: 820px; margin: 0; font-size: clamp(40px, 5.5vw, 72px); line-height: 1.02; letter-spacing: -.05em; }
.control-demo-head > p { margin: 0 0 4px; color: #9fb2c1; font-size: 17px; line-height: 1.75; }
.control-demo-stage { display: grid; grid-template-columns: minmax(0, 1.62fr) minmax(280px, .58fr); border: 1px solid rgba(255,255,255,.1); border-radius: 30px; overflow: hidden; background: #0b1725; box-shadow: 0 28px 90px rgba(0,0,0,.22); }
.control-demo-video { position: relative; min-width: 0; background: #03070b; }
.control-demo-video video { width: 100%; height: 100%; min-height: 520px; display: block; object-fit: cover; background: #03070b; }
.control-demo-badge { position: absolute; top: 20px; left: 20px; padding: 9px 12px; border: 1px solid rgba(255,255,255,.2); border-radius: 999px; color: #e4eef3; background: rgba(4,11,18,.68); font: 10px/1 ui-monospace, monospace; letter-spacing: .08em; text-transform: uppercase; backdrop-filter: blur(10px); pointer-events: none; }
.control-demo-steps { margin: 0; padding: 28px 30px; display: grid; list-style: none; counter-reset: none; }
.control-demo-steps li { padding: 22px 0; display: grid; grid-template-columns: 42px 1fr; gap: 12px; border-bottom: 1px solid var(--line); }
.control-demo-steps li:last-child { border-bottom: 0; }
.control-demo-steps li > span { padding-top: 3px; color: var(--gold); font: 11px/1 ui-monospace, monospace; }
.control-demo-steps strong { display: block; margin-bottom: 7px; font-size: 18px; }
.control-demo-steps p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.6; }
.demo-disclaimer { margin: 18px 2px 0; color: #718696; font-size: 12px; line-height: 1.6; }
.variant-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.variant-card { min-height: 320px; padding: 38px; display: flex; flex-direction: column; justify-content: space-between; border: 1px solid var(--line); border-radius: 26px; background: var(--ink-soft); }
.variant-card small { color: var(--cyan-soft); letter-spacing: .13em; text-transform: uppercase; }
.variant-card h3 { margin-bottom: 12px; font-size: 32px; }
.variant-card p { max-width: 520px; margin: 0; color: var(--muted); line-height: 1.7; }
.scope-note { margin-top: 36px; padding: 22px 26px; border-left: 2px solid var(--gold); color: #9fb2c1; background: rgba(255,255,255,.035); line-height: 1.7; }
.next-product { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding: 52px 0; }
.next-product span { color: var(--muted); font-size: 13px; }
.next-product strong { display: block; margin-top: 5px; font-size: clamp(25px, 3vw, 38px); }

[data-reveal] { opacity: 1; transform: none; transition: opacity .65s ease, transform .65s ease; }
[data-reveal].reveal-pending { opacity: 0; transform: translateY(24px); }
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 920px) {
  :root { --container: min(100% - 30px, 720px); }
  .nav-toggle { display: grid; place-items: center; }
  .main-nav {
    position: absolute;
    top: 76px;
    left: 15px;
    right: 15px;
    display: none;
    padding: 22px;
    flex-direction: column;
    align-items: stretch;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: rgba(7,17,31,.97);
  }
  .main-nav[data-open="true"] { display: flex; }
  .hero-grid, .architecture-grid, .section-head, .company-grid, .contact-grid { grid-template-columns: 1fr; }
  .product-hero-grid { grid-template-columns: 1fr; }
  .control-demo-head, .control-demo-stage { grid-template-columns: 1fr; }
  .control-demo-head { gap: 24px; }
  .control-demo-video video { min-height: auto; aspect-ratio: 16 / 9; }
  .control-demo-steps { grid-template-columns: 1fr 1fr; }
  .control-demo-steps li:nth-child(odd) { padding-right: 18px; }
  .control-demo-steps li:nth-child(even) { padding-left: 18px; border-left: 1px solid var(--line); }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .hero { padding-top: 130px; }
  .hero-visual { min-height: 520px; }
  .hero-product { width: min(650px, 90vw); }
  .hero-orbit { width: min(600px, 85vw); }
  .section-head { gap: 24px; }
  .product-row { grid-template-columns: 48px 150px 1fr 34px; }
  .product-thumb { height: 94px; }
  .product-description { grid-column: 3 / 5; }
  .evidence-grid { grid-template-columns: 1fr 1fr; }
  .application-stage { grid-template-columns: 1fr; }
  .contact-action { justify-self: start; }
}

@media (max-width: 600px) {
  .brand-copy span { display: none; }
  .brand { min-width: auto; }
  h1 { font-size: clamp(44px, 14.5vw, 66px); }
  .hero-lead { font-size: 16px; }
  .hero-visual { min-height: 400px; }
  .visual-label { right: 0; bottom: 2%; }
  .hero-foot { grid-template-columns: 1fr; }
  .hero-fact { padding-bottom: 18px; border-bottom: 1px solid var(--line); }
  .section { padding: 82px 0; }
  .product-row { grid-template-columns: 36px 1fr 32px; gap: 12px; }
  .product-index { grid-column: 1; grid-row: 1; }
  .product-title { grid-column: 2; grid-row: 1; }
  .product-arrow { grid-column: 3; grid-row: 1; }
  .product-thumb { grid-column: 1 / -1; grid-row: 2; margin-top: 10px; }
  .product-thumb { height: min(260px, 56vw); }
  .product-description { grid-column: 2 / 4; grid-row: 3; font-size: 14px; }
  .product-visual-meta { left: 20px; right: 20px; bottom: 18px; }
  .product-visual-meta strong { font-size: 16px; }
  .architecture-visual { min-height: 440px; border-radius: 24px; }
  .evidence-grid { grid-template-columns: 1fr; }
  .evidence-item { min-height: 190px; }
  .evidence-item h3 { margin-top: 45px; }
  .application-stage { border-radius: 24px; }
  .application-copy, .application-panel { padding: 34px 24px; }
  .capability-list { grid-template-columns: 1fr; }
  .footer-grid { align-items: flex-start; flex-direction: column; }
  .footer-note { text-align: left; }
  .product-hero { padding-top: 126px; }
  .control-demo-stage { border-radius: 22px; }
  .control-demo-steps { padding: 12px 24px 20px; grid-template-columns: 1fr; }
  .control-demo-steps li:nth-child(odd), .control-demo-steps li:nth-child(even) { padding: 18px 0; border-left: 0; }
  .control-demo-badge { top: 12px; left: 12px; }
  .feature-grid, .variant-grid { grid-template-columns: 1fr; }
  .next-product { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
}