/* ============================================================
   ShenzhenOPS — Master Stylesheet
   Design language: Industrial Minimal (Black + Signal Orange)
   ============================================================ */

:root {
  /* ─── Core palette ─── */
  --ink: #0F1419;
  --ink-2: #1A2129;
  --ink-soft: #2A2F36;
  --ink-mute: #5A636B;
  --ink-faint: #9DA5AD;
  --orange: #FF6B35;
  --orange-deep: #E5562A;
  --orange-soft: rgba(255, 107, 53, 0.08);
  --green: #00A86B;
  --green-soft: rgba(0, 168, 107, 0.1);
  --paper: #FAFAF7;
  --paper-warm: #F4F2EC;
  --paper-cool: #F5F5F2;
  --line: rgba(15, 20, 25, 0.08);
  --line-strong: rgba(15, 20, 25, 0.14);
  --line-dark: rgba(255, 255, 255, 0.1);

  /* ─── Typography ─── */
  --sans: 'Inter', 'Helvetica Neue', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --display: 'Space Grotesk', 'Inter', sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;

  /* ─── Spacing ─── */
  --r-sm: 6px;
  --r: 10px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 28px;

  /* ─── Container ─── */
  --container: 1280px;
  --gutter: 40px;

  /* ─── Shadows ─── */
  --shadow-sm: 0 4px 12px -4px rgba(15, 20, 25, 0.12);
  --shadow: 0 16px 48px -16px rgba(15, 20, 25, 0.18);
  --shadow-lg: 0 24px 64px -24px rgba(15, 20, 25, 0.22);
  --shadow-xl: 0 32px 80px -32px rgba(15, 20, 25, 0.35);
}

/* ───────────── Reset ───────────── */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; background: none; border: none; color: inherit; }

/* ───────────── Utility ───────────── */
.container { max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.mono { font-family: var(--mono); }
.display { font-family: var(--display); }
.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.eyebrow-orange { color: var(--orange); }
.live-dot {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--green);
  margin-right: 8px;
  box-shadow: 0 0 0 0 rgba(0, 168, 107, 0.6);
  animation: pulse 2s infinite;
}
.orange-dot {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 0 rgba(255, 107, 53, 0.6);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(255, 107, 53, 0.5); }
  70% { box-shadow: 0 0 0 10px rgba(255, 107, 53, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 107, 53, 0); }
}

/* ───────────── Top notice bar (above nav) ───────────── */
.topbar {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.5px;
  padding: 8px 0;
  border-bottom: 1px solid var(--line-dark);
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.topbar .left { display: flex; align-items: center; gap: 6px; }
.topbar .right { display: flex; align-items: center; gap: 20px; color: var(--ink-faint); }
.topbar a { color: var(--paper); transition: color .2s; }
.topbar a:hover { color: var(--orange); }

/* ───────────── Navigation ───────────── */
.nav {
  background: rgba(250, 250, 247, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 50;
}
.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 112px;
  gap: 32px;
}
.nav-logo { flex-shrink: 0; display: flex; align-items: center; }
.nav-logo svg { height: 88px; width: auto; }
.nav-links {
  display: flex;
  gap: 28px;
  margin-left: auto;
}
.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-soft);
  transition: color .15s;
  position: relative;
  padding: 4px 0;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transition: transform .2s;
  transform-origin: left;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after,
.nav-links a.active::after { transform: scaleX(1); }
.nav-cta {
  background: var(--ink);
  color: var(--paper);
  padding: 10px 18px;
  border-radius: var(--r-sm);
  font-size: 13px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background .15s, transform .15s;
}
.nav-cta:hover { background: var(--orange); transform: translateY(-1px); }
.nav-cta::before { content: "💬"; font-size: 14px; }
.nav-toggle {
  display: none;
  width: 32px; height: 32px;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
}
.nav-toggle span {
  display: block;
  width: 20px; height: 2px;
  background: var(--ink);
  margin: 0 auto;
  transition: transform .2s;
}

/* ───────────── Buttons ───────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 24px;
  border-radius: var(--r-sm);
  font-size: 15px;
  font-weight: 600;
  transition: transform .15s, background .15s, border-color .15s;
  white-space: nowrap;
  cursor: pointer;
  border: 1.5px solid transparent;
}
.btn-primary {
  background: var(--ink);
  color: var(--paper);
}
.btn-primary:hover { background: var(--ink-2); transform: translateY(-1px); }
.btn-primary .arrow { transition: transform .2s; }
.btn-primary:hover .arrow { transform: translateX(3px); }
.btn-secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
}
.btn-secondary:hover { background: var(--ink); color: var(--paper); }
.btn-orange {
  background: var(--orange);
  color: white;
}
.btn-orange:hover { background: var(--orange-deep); transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--ink-soft);
  border-color: var(--line-strong);
}
.btn-ghost:hover { border-color: var(--ink); color: var(--ink); }

/* ───────────── HERO ───────────── */
.hero {
  padding: 80px 0 100px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: -100px; right: -120px;
  width: 500px; height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}
.hero .container {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 72px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 100px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 28px;
  background: rgba(255, 255, 255, 0.5);
}
.hero h1 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 64px;
  line-height: 1.02;
  letter-spacing: -2.5px;
  margin-bottom: 28px;
  color: var(--ink);
}
.hero h1 .accent {
  color: var(--orange);
  font-style: normal;
  position: relative;
  white-space: nowrap;
}
.hero h1 .accent::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 2px;
  height: 6px;
  background: var(--orange);
  opacity: 0.18;
  z-index: -1;
}
.hero .lede {
  font-size: 18px;
  line-height: 1.65;
  color: var(--ink-soft);
  max-width: 540px;
  margin-bottom: 36px;
}
.hero .lede strong { color: var(--ink); font-weight: 600; }
.hero .cta-row {
  display: flex;
  gap: 12px;
  margin-bottom: 44px;
  flex-wrap: wrap;
}
.hero .trust-row {
  display: flex;
  align-items: center;
  gap: 20px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
  flex-wrap: wrap;
}
.cert-badges {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.cert-badge {
  padding: 6px 12px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--ink-soft);
  background: white;
}

/* Hero visual */
.hero-visual {
  position: relative;
  height: 600px;
}
.hero-img-wrap {
  width: 100%;
  height: 100%;
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  position: relative;
}
.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.spec-card {
  position: absolute;
  background: white;
  border-radius: var(--r-md);
  padding: 18px 22px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--line);
  min-width: 150px;
}
.spec-card .key {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-mute);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.spec-card .val {
  font-family: var(--display);
  font-size: 22px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.1;
}
.spec-card.tl { top: 24px; left: -30px; }
.spec-card.br { bottom: 24px; right: -30px; }
.spec-card.br .val { color: var(--orange); }

/* ───────────── Section frame ───────────── */
.section {
  padding: 96px 0;
  position: relative;
}
.section-dark {
  background: var(--ink);
  color: var(--paper);
}
.section-warm { background: var(--paper-warm); }
.section-head {
  margin-bottom: 56px;
}
.section-head .eyebrow {
  margin-bottom: 14px;
}
.section-head h2 {
  font-family: var(--display);
  font-size: 44px;
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -1.5px;
  max-width: 720px;
  color: var(--ink);
}
.section-dark .section-head h2 { color: var(--paper); }
.section-head .sub {
  font-size: 17px;
  color: var(--ink-soft);
  margin-top: 16px;
  max-width: 680px;
  line-height: 1.6;
}
.section-dark .section-head .sub { color: var(--ink-faint); }
.section-head-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 56px;
  gap: 40px;
  flex-wrap: wrap;
}
.section-head-row .head { max-width: 720px; }
.section-head-row .head h2 {
  font-family: var(--display);
  font-size: 44px;
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -1.5px;
  color: var(--ink);
}
.section-dark .section-head-row .head h2 { color: var(--paper); }
.section-head-row .head .eyebrow { margin-bottom: 14px; }
.section-head-row .head .sub {
  font-size: 17px;
  color: var(--ink-soft);
  margin-top: 16px;
  line-height: 1.6;
}
.section-dark .section-head-row .head .sub { color: var(--ink-faint); }

/* ───────────── Product matrix (homepage) ───────────── */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.product-card {
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: transform .25s, box-shadow .25s, border-color .25s;
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--line-strong);
}
.product-card .img-wrap {
  position: relative;
  aspect-ratio: 4/3;
  background: var(--paper-cool);
  overflow: hidden;
}
.product-card .img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s;
}
.product-card:hover .img-wrap img { transform: scale(1.04); }
.product-card .img-wrap .badge {
  position: absolute;
  top: 14px;
  left: 14px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1px;
  padding: 5px 10px;
  border-radius: var(--r-sm);
  font-weight: 600;
}
.product-card .img-wrap .badge.orange { background: var(--orange); }

/* Special "Most Popular" badge for the best-seller */
.product-card .img-wrap .badge.hot {
  background: linear-gradient(135deg, #FF6B35 0%, #FF3D00 100%);
  color: white;
  font-weight: 700;
  letter-spacing: 0.5px;
  box-shadow: 0 4px 12px rgba(255, 61, 0, 0.35);
  padding: 6px 12px;
  font-size: 11px;
}
.product-card .img-wrap .badge.hot::before {
  content: "🔥 ";
}

/* Special "AI / NPU" badge for AI-capable products */
.product-card .img-wrap .badge.ai {
  background: linear-gradient(135deg, #0F1419 0%, #2A2F36 100%);
  color: white;
  font-weight: 700;
  letter-spacing: 0.5px;
  border: 1.5px solid var(--orange);
  padding: 5px 11px;
  font-size: 11px;
  position: relative;
}
.product-card .img-wrap .badge.ai::before {
  content: "🤖 ";
}
.product-card .body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.product-card .sku {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--orange);
  letter-spacing: 1.5px;
  margin-bottom: 10px;
  text-transform: uppercase;
}
.product-card h3 {
  font-family: var(--display);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.5px;
  line-height: 1.2;
  margin-bottom: 10px;
  color: var(--ink);
}
.product-card .desc {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.5;
  margin-bottom: 18px;
  flex: 1;
}
.product-card .specs {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-mute);
  padding: 14px 0;
  border-top: 1px solid var(--line);
  margin-bottom: 18px;
  line-height: 1.7;
}
.product-card .specs strong { color: var(--ink-soft); font-weight: 500; }
.product-card .card-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.product-card .more {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color .15s, gap .15s;
}
.product-card .more:hover { color: var(--orange); gap: 10px; }
.product-card .price-note {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-mute);
}

/* ───────────── Selector (interactive widget) ───────────── */
.selector-wrap {
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--r-xl);
  padding: 64px 56px;
  position: relative;
  overflow: hidden;
}
.selector-wrap::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--orange) 50%, transparent);
}
.selector-wrap h2 { color: var(--paper); }
.selector-wrap .sub { color: var(--ink-faint); }
.selector-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 40px 0 28px;
}
.sel-step {
  background: var(--ink-2);
  border: 1.5px solid var(--ink-soft);
  border-radius: var(--r);
  padding: 16px 18px;
  cursor: pointer;
  transition: all .2s;
  position: relative;
}
.sel-step:hover { border-color: var(--ink-faint); }
.sel-step.active {
  border-color: var(--orange);
  background: rgba(255, 107, 53, 0.06);
}
.sel-step .lab {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-faint);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.sel-step .val {
  font-family: var(--display);
  font-size: 17px;
  font-weight: 600;
  color: var(--paper);
}
.sel-step.active .val { color: var(--orange); }
.sel-options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}
.sel-opt {
  padding: 8px 14px;
  background: var(--ink-2);
  border: 1px solid var(--ink-soft);
  border-radius: var(--r-sm);
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-faint);
  cursor: pointer;
  transition: all .15s;
  font-family: var(--sans);
}
.sel-opt:hover { color: var(--paper); border-color: var(--ink-faint); }
.sel-opt.on {
  background: var(--orange);
  border-color: var(--orange);
  color: white;
}
.selector-result {
  background: rgba(255, 107, 53, 0.06);
  border: 1px solid rgba(255, 107, 53, 0.25);
  border-radius: var(--r-md);
  padding: 24px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 24px;
}
.selector-result .info .small {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--orange);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.selector-result .info .name {
  font-family: var(--display);
  font-size: 22px;
  font-weight: 600;
  color: var(--paper);
}
.selector-result .info .desc {
  font-size: 13px;
  color: var(--ink-faint);
  margin-top: 6px;
  font-family: var(--mono);
}

/* ───────────── Comparison table ───────────── */
.compare-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: white;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}
.compare-table th, .compare-table td {
  padding: 18px 20px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}
.compare-table tr:last-child td { border-bottom: none; }
.compare-table thead th {
  background: var(--paper-warm);
  font-family: var(--display);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: -0.3px;
}
.compare-table thead th.us {
  background: var(--ink);
  color: var(--paper);
  position: relative;
}
.compare-table thead th.us::before {
  content: "RECOMMENDED";
  position: absolute;
  top: 6px; left: 50%;
  transform: translateX(-50%);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 1.5px;
  color: var(--orange);
}
.compare-table td.label {
  font-weight: 600;
  color: var(--ink);
  font-family: var(--display);
  font-size: 14px;
}
.compare-table td.us {
  background: rgba(255, 107, 53, 0.04);
  font-weight: 500;
  color: var(--ink);
  border-left: 2px solid var(--orange);
  border-right: 2px solid var(--orange);
}
.compare-table td.dim { color: var(--ink-mute); }
.cell-yes { color: var(--green); font-weight: 700; }
.cell-no { color: var(--ink-mute); opacity: 0.5; }
.cell-partial { color: var(--orange); }

/* ───────────── Markets ───────────── */
.markets-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.market-card {
  background: var(--ink-2);
  border: 1px solid var(--ink-soft);
  border-radius: var(--r-lg);
  padding: 32px 28px;
  position: relative;
  overflow: hidden;
  transition: all .25s;
}
.market-card:hover {
  border-color: var(--orange);
  transform: translateY(-2px);
}
.market-card::before {
  content: "";
  position: absolute;
  top: 0; right: 0;
  width: 80px; height: 80px;
  background: radial-gradient(circle at top right, var(--orange-soft), transparent 70%);
}
.market-card .flag {
  font-size: 32px;
  margin-bottom: 16px;
  line-height: 1;
}
.market-card h3 {
  font-family: var(--display);
  font-size: 20px;
  font-weight: 600;
  color: var(--paper);
  margin-bottom: 10px;
}
.market-card .badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}
.market-badge {
  padding: 3px 8px;
  border-radius: var(--r-sm);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 1px;
  font-weight: 600;
}
.market-badge.orange {
  background: var(--orange);
  color: white;
}
.market-badge.ghost {
  background: transparent;
  border: 1px solid var(--ink-soft);
  color: var(--ink-faint);
}
.market-card p {
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-faint);
}

/* ───────────── Trust / Stats strip ───────────── */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  background: var(--paper-warm);
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line);
}
.stat {
  padding: 32px 28px;
  border-right: 1px solid var(--line);
  text-align: left;
}
.stat:last-child { border-right: none; }
.stat .num {
  font-family: var(--display);
  font-size: 42px;
  font-weight: 600;
  letter-spacing: -1.5px;
  color: var(--ink);
  line-height: 1;
  margin-bottom: 10px;
}
.stat .num .accent { color: var(--orange); }
.stat .lab {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--ink-mute);
}

/* ───────────── Factory backing block ───────────── */
.factory-block {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
}
.factory-block .img-wrap {
  position: relative;
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.factory-block .img-wrap img {
  width: 100%;
  display: block;
  aspect-ratio: 4/3;
  object-fit: cover;
}
.factory-block h2 { margin-bottom: 24px; }
.factory-block .points {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin: 28px 0 36px;
}
.factory-point {
  display: flex;
  gap: 18px;
  align-items: flex-start;
}
.factory-point .icon {
  flex-shrink: 0;
  width: 36px; height: 36px;
  border-radius: var(--r-sm);
  background: var(--orange-soft);
  color: var(--orange);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--display);
  font-size: 16px;
  font-weight: 700;
}
.factory-point .text h4 {
  font-family: var(--display);
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--ink);
}
.factory-point .text p {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.55;
}

/* ───────────── Contact block (final CTA) ───────────── */
.contact-block {
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--r-xl);
  padding: 64px;
  position: relative;
  overflow: hidden;
}
.contact-block::before {
  content: "";
  position: absolute;
  top: -150px; right: -150px;
  width: 500px; height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.12) 0%, transparent 70%);
  pointer-events: none;
}
.contact-block .inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  position: relative;
}
.contact-block h2 {
  color: var(--paper);
  font-family: var(--display);
  font-size: 44px;
  font-weight: 600;
  letter-spacing: -1.5px;
  line-height: 1.05;
  margin-bottom: 20px;
}
.contact-block .lead {
  font-size: 17px;
  color: var(--ink-faint);
  line-height: 1.6;
  margin-bottom: 36px;
  max-width: 460px;
}
.contact-channels {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.channel {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 22px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line-dark);
  border-radius: var(--r-md);
  transition: all .2s;
  color: var(--paper);
}
.channel:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--orange);
  transform: translateX(4px);
}
.channel .icon {
  flex-shrink: 0;
  width: 44px; height: 44px;
  border-radius: var(--r-sm);
  background: var(--orange);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}
.channel .info { flex: 1; }
.channel .info .lab {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1.5px;
  color: var(--ink-faint);
  text-transform: uppercase;
  margin-bottom: 4px;
}
.channel .info .val {
  font-family: var(--display);
  font-weight: 600;
  font-size: 17px;
  color: var(--paper);
}
.channel .arrow { color: var(--orange); font-size: 20px; }

.contact-signoff {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid var(--line-dark);
}
.signoff-avatar {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--orange), var(--orange-deep));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--display);
  font-weight: 700;
  font-size: 22px;
  color: white;
  flex-shrink: 0;
}
.signoff-text .name {
  font-family: var(--display);
  font-weight: 600;
  font-size: 17px;
  color: var(--paper);
}
.signoff-text .role {
  font-size: 13px;
  color: var(--ink-faint);
  margin-top: 2px;
}

/* ───────────── Footer ───────────── */
.footer {
  background: var(--ink);
  color: var(--ink-faint);
  padding: 80px 0 40px;
  border-top: 1px solid var(--line-dark);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand .logo { margin-bottom: 24px; height: 38px; }
.footer-brand p {
  font-size: 14px;
  line-height: 1.65;
  margin-bottom: 24px;
  max-width: 320px;
}
.footer-brand .cert-mini {
  display: flex;
  gap: 10px;
}
.footer-brand .cert-mini .cert-badge {
  background: transparent;
  border-color: var(--line-dark);
  color: var(--ink-faint);
}
.footer-col h5 {
  font-family: var(--display);
  font-size: 13px;
  font-weight: 600;
  color: var(--paper);
  margin-bottom: 18px;
  letter-spacing: -0.2px;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a {
  font-size: 14px;
  color: var(--ink-faint);
  transition: color .15s;
}
.footer-col a:hover { color: var(--orange); }
.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--line-dark);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-mute);
  letter-spacing: 0.5px;
}
.footer-bottom .legal a { color: var(--ink-mute); margin-left: 20px; }
.footer-bottom .legal a:hover { color: var(--orange); }

/* ───────────── Responsive ───────────── */
@media (max-width: 1024px) {
  .hero h1 { font-size: 52px; }
  .hero .container { grid-template-columns: 1fr; gap: 56px; }
  .hero-visual { height: 480px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .markets-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-strip { grid-template-columns: repeat(2, 1fr); }
  .stat { border-right: none; border-bottom: 1px solid var(--line); }
  .stat:nth-child(2n) { border-right: none; }
  .factory-block { grid-template-columns: 1fr; gap: 48px; }
  .contact-block .inner { grid-template-columns: 1fr; gap: 48px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --gutter: 20px; }
  .topbar { font-size: 11px; padding: 6px 0; }
  .topbar .right { display: none; }
  .nav .container { height: 84px; gap: 12px; }
  .nav-logo svg { height: 56px; }
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-cta { padding: 8px 14px; font-size: 12px; }
  
  .hero { padding: 48px 0 64px; }
  .hero h1 { font-size: 38px; letter-spacing: -1.5px; }
  .hero .lede { font-size: 16px; }
  .hero-visual { height: 360px; }
  .spec-card { padding: 14px 16px; min-width: 130px; }
  .spec-card.tl { left: 8px; top: 12px; }
  .spec-card.br { right: 8px; bottom: 12px; }
  .spec-card .val { font-size: 17px; }
  
  .section { padding: 64px 0; }
  .section-head h2,
  .section-head-row .head h2,
  .contact-block h2 { font-size: 32px; letter-spacing: -1px; }
  
  .product-grid { grid-template-columns: 1fr; }
  .selector-wrap { padding: 36px 24px; }
  .selector-steps { grid-template-columns: 1fr 1fr; }
  
  .markets-grid { grid-template-columns: 1fr; }
  .stats-strip { grid-template-columns: 1fr; }
  .stat { border-right: none !important; }
  
  .compare-table { font-size: 12px; }
  .compare-table th, .compare-table td { padding: 12px 10px; font-size: 12px; }
  .compare-table thead th.us::before { font-size: 8px; }
  
  .contact-block { padding: 40px 24px; }
  .footer { padding: 56px 0 28px; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
}