/* ─────────────────────────────────────────────────────────────────
   SAO VIỆT — MORGAN  ·  Industrial Precision
   Paper & Graphite — light, airy, technical
   ───────────────────────────────────────────────────────────────── */

:root {
  --bg:           #F4F1EA;
  --bg-elev:      #ECE7DC;
  --bg-card:      #FFFFFF;
  --bg-card-hi:   #FAF7F0;
  --line:         rgba(20, 19, 15, 0.07);
  --line-strong:  rgba(20, 19, 15, 0.14);
  --line-grid:    rgba(20, 19, 15, 0.035);

  --fg:           #14130F;
  --fg-dim:       #5A554C;
  --fg-mute:      #9C9789;

  --accent:       #C0392B;
  --accent-hi:    #A8311F;
  --accent-2:     #1A1A1A;

  --font-head: "Barlow Condensed", sans-serif;
  --font-body: "IBM Plex Sans", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --grain-opacity: 0.28;
  --grid-opacity:  0.55;

  --pad-x: clamp(20px, 4vw, 64px);
  --maxw:  1320px;
}

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

html {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

body {
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Carbon grain overlay */
body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 1000;
  opacity: var(--grain-opacity);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.12  0 0 0 0 0.11  0 0 0 0 0.09  0 0 0 0.22 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  mix-blend-mode: multiply;
}

/* Blueprint grid */
body::after {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: -1;
  opacity: var(--grid-opacity);
  background-image:
    linear-gradient(var(--line-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-grid) 1px, transparent 1px);
  background-size: 64px 64px;
}

::selection { background: var(--accent); color: #fff; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
img { display: block; max-width: 100%; }

/* ── Typography ────────────────────────────────────────────────── */
.h-display {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(48px, 7.5vw, 112px);
  line-height: 0.92;
  letter-spacing: -0.015em;
  text-transform: uppercase;
}
.h-section {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(28px, 3vw, 44px);
  line-height: 1.05;
  letter-spacing: -0.005em;
  text-transform: uppercase;
}
.h-card {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 22px;
  line-height: 1.1;
  letter-spacing: 0.005em;
  text-transform: uppercase;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--fg-dim);
  display: inline-flex; align-items: center; gap: 10px;
}
.eyebrow::before {
  content: ""; width: 28px; height: 1px; background: var(--accent);
}
.eyebrow.no-rule::before { display: none; }

.mono { font-family: var(--font-mono); }
.dim  { color: var(--fg-dim); }
.mute { color: var(--fg-mute); }

/* ── Layout ────────────────────────────────────────────────────── */
.page {
  position: relative;
  padding: 0 var(--pad-x);
  max-width: var(--maxw);
  margin: 0 auto;
}
section { position: relative; }

/* ── Buttons ───────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 14px 22px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  border: 1px solid var(--line-strong);
  color: var(--fg);
  transition: all 0.22s cubic-bezier(.2,.7,.2,1);
  position: relative;
  white-space: nowrap;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(192, 57, 43, 0.06);
  transform: translateY(-1px);
}
.btn--solid {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn--solid:hover {
  background: var(--accent-hi);
  border-color: var(--accent-hi);
  color: #fff;
  box-shadow: 0 0 0 6px rgba(192, 57, 43, 0.12);
  transform: translateY(-1px);
}
.btn--ghost { background: transparent; }
.btn .arrow { transition: transform 0.22s ease; }
.btn:hover .arrow { transform: translateX(4px); }

/* ── Section header ────────────────────────────────────────────── */
.section-head {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 56px;
}
.section-head .right {
  text-align: right;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-mute);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

/* ── Technical decorations ─────────────────────────────────────── */
.crosshair { position: absolute; width: 12px; height: 12px; pointer-events: none; }
.crosshair::before, .crosshair::after {
  content: ""; position: absolute; background: var(--fg-dim);
}
.crosshair::before { left: 50%; top: 0; bottom: 0; width: 1px; transform: translateX(-50%); }
.crosshair::after  { top: 50%; left: 0; right: 0; height: 1px; transform: translateY(-50%); }

.tag {
  display: inline-block;
  padding: 4px 10px;
  border: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-dim);
  background: none;
  cursor: default;
}
.tag.accent { color: var(--accent); border-color: var(--accent); }
.tag.amber  { color: var(--accent-2); border-color: var(--accent-2); }

/* ── Card ──────────────────────────────────────────────────────── */
.card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--line);
  transition: border-color 0.25s ease, background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}
.card:hover {
  border-color: var(--line-strong);
  background: var(--bg-card-hi);
  box-shadow: 0 10px 26px rgba(20,19,15,0.06);
}

/* ── Hover glow ────────────────────────────────────────────────── */
.glow-hover { position: relative; overflow: hidden; }
.glow-hover::after {
  content: "";
  position: absolute; inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at var(--mx, 50%) var(--my, 50%),
    rgba(192,57,43,0.22), transparent 55%);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.glow-hover:hover::after { opacity: 1; }

/* ── Image placeholder ─────────────────────────────────────────── */
.imgholder {
  background:
    repeating-linear-gradient(135deg, rgba(20,19,15,0.04) 0 2px, transparent 2px 14px),
    radial-gradient(circle at 30% 30%, #FFFFFF 0%, #ECE7DC 75%);
  border: 1px dashed var(--line-strong);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-mute);
  display: flex; align-items: center; justify-content: center;
  position: relative;
  overflow: hidden;
}
.imgholder::before, .imgholder::after {
  content: "";
  position: absolute;
  width: 14px; height: 14px;
  border: 1px solid var(--fg-mute);
  opacity: 0.5;
}
.imgholder::before { top: 8px; left: 8px; border-right: 0; border-bottom: 0; }
.imgholder::after  { bottom: 8px; right: 8px; border-left: 0; border-top: 0; }

/* Schematic SVG background */
.schematic-bg {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
}

/* ── Animations ────────────────────────────────────────────────── */
@keyframes spark {
  0%, 100% { opacity: 0.2; transform: scale(0.9); }
  50%      { opacity: 1;   transform: scale(1.05); }
}
@keyframes scan {
  0%   { transform: translateY(-100%); }
  100% { transform: translateY(200%); }
}
@keyframes pulse-dot {
  0%, 100% { opacity: 0.4; }
  50%      { opacity: 1; }
}
@keyframes blink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}
@keyframes bar { to { transform: scaleX(1); } }
@keyframes fade-up {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(.2,.7,.2,1);
}
.reveal.in { opacity: 1; transform: translateY(0); }

/* ── Marquee ───────────────────────────────────────────────────── */
.marquee {
  display: flex;
  width: max-content;
  animation: marquee 36s linear infinite;
}

/* ── Sticky CTA ────────────────────────────────────────────────── */
.sticky-cta {
  position: fixed;
  right: 24px; bottom: 24px;
  z-index: 800;
  display: flex; flex-direction: column; gap: 12px;
  align-items: flex-end;
}
.sticky-cta .floating {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 18px;
  background: var(--accent); color: #fff;
  font-family: var(--font-mono);
  font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase;
  border: 1px solid var(--accent);
  box-shadow: 0 18px 38px rgba(20,19,15,0.18), 0 0 0 6px rgba(192,57,43,0.10);
  cursor: pointer;
  transition: transform 0.2s ease;
}
.sticky-cta .floating:hover { transform: translateY(-2px); }
.sticky-cta .zalo {
  width: 52px; height: 52px; border-radius: 50%;
  background: #0068FF; color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-head); font-weight: 700; font-size: 18px;
  box-shadow: 0 10px 24px rgba(0, 104, 255, 0.28);
  border: 0; cursor: pointer; position: relative;
  text-decoration: none;
}
.sticky-cta .zalo::after {
  content: "";
  position: absolute; inset: -6px; border-radius: 50%;
  border: 1px solid #0068FF;
  animation: pulse-dot 2s ease-in-out infinite;
}

/* ── Modal ─────────────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(20, 19, 15, 0.42);
  backdrop-filter: blur(8px);
  z-index: 900;
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
  animation: fade-up 0.25s ease;
}
.modal-backdrop[hidden] { display: none; }
.modal {
  background: var(--bg-card);
  border: 1px solid var(--line-strong);
  box-shadow: 0 24px 60px rgba(20,19,15,0.18);
  max-width: 580px; width: 100%;
  padding: 40px;
  position: relative;
}
.modal .close {
  position: absolute; top: 12px; right: 12px;
  width: 32px; height: 32px;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--fg-dim); font-family: var(--font-mono);
}
.modal .close:hover { color: var(--accent); }

/* ── Form ──────────────────────────────────────────────────────── */
.field { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
.field label {
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--fg-dim);
}
.field input,
.field textarea,
.field select {
  background: var(--bg);
  border: 1px solid var(--line-strong);
  color: var(--fg);
  padding: 12px 14px;
  font-family: var(--font-body); font-size: 14px;
  outline: none;
  transition: border-color 0.2s ease;
  width: 100%;
}
.field input:focus,
.field textarea:focus,
.field select:focus { border-color: var(--accent); }
.field textarea { resize: vertical; min-height: 100px; }

/* ── Nav ───────────────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 500;
  background: rgba(244, 241, 234, 0.82);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  backdrop-filter: blur(20px) saturate(140%);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 32px;
  padding: 16px var(--pad-x);
  max-width: var(--maxw); margin: 0 auto;
}
.nav .brand {
  display: flex; align-items: center; gap: 12px;
  text-decoration: none;
}
.nav .brand-logo {
  height: 40px; width: auto;
  object-fit: contain; flex-shrink: 0;
}
.nav .brand-mark {
  width: 36px; height: 36px;
  background: var(--accent);
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-head); font-weight: 700; font-size: 18px;
  color: #fff; letter-spacing: -0.02em;
  position: relative; flex-shrink: 0;
}
.nav .brand-mark::after {
  content: ""; position: absolute; bottom: -3px; right: -3px;
  width: 6px; height: 6px; background: var(--accent-2);
}
.nav .brand-text {
  font-family: var(--font-head); font-weight: 700; font-size: 18px;
  letter-spacing: 0.02em; text-transform: uppercase; line-height: 1;
}
.nav .brand-sub {
  font-family: var(--font-mono); font-size: 9px;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--fg-mute); margin-top: 2px;
}
.nav ul {
  list-style: none; padding: 0; margin: 0;
  display: flex; gap: 28px; justify-content: center;
}
.nav ul a {
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--fg-dim);
  padding: 8px 0;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
  cursor: pointer; text-decoration: none;
}
.nav ul a:hover { color: var(--fg); }
.nav ul a.active { color: var(--fg); border-bottom-color: var(--accent); }
.nav-right { display: flex; align-items: center; gap: 16px; }
.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--line-strong);
  font-family: var(--font-mono); font-size: 10px;
  letter-spacing: 0.16em; text-transform: uppercase;
}
.lang-toggle button { padding: 6px 10px; color: var(--fg-mute); }
.lang-toggle button.on { background: var(--accent-2); color: #fff; }

/* ── Hero ──────────────────────────────────────────────────────── */
.hero {
  position: relative;
  padding-top: 64px; padding-bottom: 80px;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 56px; align-items: center;
}
.hero-tag {
  display: inline-flex; align-items: center; gap: 10px;
  margin-bottom: 28px;
}
.hero-tag .dot {
  width: 8px; height: 8px; background: var(--accent-2);
  animation: pulse-dot 1.6s ease-in-out infinite;
}
.hero-title {
  font-family: var(--font-head); font-weight: 700;
  font-size: clamp(56px, 8vw, 124px);
  line-height: 0.95; letter-spacing: -0.015em; text-transform: uppercase;
  margin: 0 0 32px;
}
.hero-title em {
  font-style: normal; color: var(--accent);
  display: inline-block; position: relative;
}
.hero-title em::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: -6px;
  height: 4px; background: var(--accent);
  transform: scaleX(0); transform-origin: left;
  animation: bar 1.2s cubic-bezier(.7,0,.2,1) 0.6s forwards;
}
.hero-sub {
  max-width: 540px; font-size: 17px;
  color: var(--fg-dim); margin-bottom: 36px;
}
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-visual {
  position: relative; aspect-ratio: 4/5;
  border: 1px solid var(--line-strong);
}
.hero-visual::before {
  content: ""; position: absolute; left: -1px; top: -1px;
  width: 24px; height: 24px;
  border-top: 1px solid var(--accent); border-left: 1px solid var(--accent);
  z-index: 2;
}
.hero-visual::after {
  content: ""; position: absolute; right: -1px; bottom: -1px;
  width: 24px; height: 24px;
  border-bottom: 1px solid var(--accent); border-right: 1px solid var(--accent);
  z-index: 2;
}
.hero-visual .scanline {
  position: absolute; inset: 0;
  pointer-events: none; overflow: hidden; z-index: 3;
}
.hero-visual .scanline > div {
  position: absolute; left: 0; right: 0; height: 2px;
  background: linear-gradient(to bottom, transparent, rgba(192,57,43,0.5), transparent);
  animation: scan 4.5s linear infinite;
}
.hero-visual .live-label {
  position: absolute; top: 16px; right: 16px;
  font-family: var(--font-mono); font-size: 10px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--accent-2); z-index: 3;
  display: flex; align-items: center; gap: 6px;
}
.hero-visual .live-label::before {
  content: ""; width: 6px; height: 6px;
  background: var(--accent-2);
  animation: blink 1s steps(1) infinite;
}
.hero-spec {
  position: absolute; left: -1px; bottom: -1px;
  background: var(--bg);
  border-top: 1px solid var(--line-strong);
  border-right: 1px solid var(--line-strong);
  padding: 14px 18px;
  font-family: var(--font-mono); font-size: 11px;
  color: var(--fg-dim); z-index: 3; letter-spacing: 0.06em;
}
.hero-spec b { color: var(--fg); font-weight: 600; }
.hero-spec .row { display: flex; gap: 18px; }
.hero-spec .row + .row { margin-top: 4px; }

.hero-meta-strip {
  margin-top: 56px;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: 18px 0;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--fg-dim);
}
.hero-meta-strip .num {
  font-family: var(--font-head); font-weight: 700; font-size: 36px;
  color: var(--fg); letter-spacing: -0.01em;
  display: block; margin-bottom: 4px; line-height: 1;
}
.hero-meta-strip .num .acc { color: var(--accent); }

/* ── Why grid ──────────────────────────────────────────────────── */
.why-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px; background: var(--line);
  align-items: stretch;
}
.why-grid > * { height: 100%; }
.why-grid .why {
  padding: 36px 30px 32px; position: relative;
  background: var(--bg);
  transition: background 0.25s ease; cursor: default;
  height: 100%;
}
.why-grid .why:hover { background: var(--bg-card); }
.why-grid .why .icon {
  width: 52px; height: 52px;
  border: 1px solid var(--line-strong);
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 24px; color: var(--accent);
  transition: border-color 0.25s ease;
}
.why-grid .why:hover .icon { border-color: var(--accent); }
.why-grid .why .num {
  position: absolute; top: 14px; right: 18px;
  font-family: var(--font-mono); font-size: 10px;
  letter-spacing: 0.18em; color: var(--fg-mute);
}
.why-grid .why h4 {
  font-family: var(--font-head); font-weight: 600;
  font-size: 22px; text-transform: uppercase;
  margin: 0 0 10px; letter-spacing: 0.005em;
}
.why-grid .why p { font-size: 14px; color: var(--fg-dim); margin: 0; }

/* ── Industries grid ───────────────────────────────────────────── */
.ind-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1px; background: var(--line);
}
.ind {
  background: var(--bg); padding: 36px 28px;
  position: relative; min-height: 220px;
  display: flex; flex-direction: column; justify-content: space-between;
  overflow: hidden; cursor: pointer;
  transition: background 0.3s ease;
  text-decoration: none; color: var(--fg);
}
.ind:hover { background: var(--bg-card); }
.ind::before {
  content: ""; position: absolute; left: 0; top: 0;
  width: 100%; height: 2px; background: var(--accent);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.4s cubic-bezier(.2,.7,.2,1);
}
.ind:hover::before { transform: scaleX(1); }
.ind .num { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.18em; color: var(--fg-mute); }
.ind .icon { color: var(--fg-dim); margin: 10px 0 18px; transition: color 0.3s ease; }
.ind:hover .icon { color: var(--accent); }
.ind h4 {
  font-family: var(--font-head); font-weight: 600;
  font-size: 24px; text-transform: uppercase;
  letter-spacing: 0.005em; margin: 0 0 8px; line-height: 1.05;
}
.ind p { font-size: 13px; color: var(--fg-dim); margin: 0; }
.ind .ind-arrow {
  margin-top: 18px; font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.18em; color: var(--fg-mute);
  display: inline-flex; align-items: center; gap: 6px;
  transition: color 0.3s ease, gap 0.3s ease;
}
.ind:hover .ind-arrow { color: var(--accent); gap: 12px; }

/* ── Products grid ─────────────────────────────────────────────── */
.prod-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.prod-card {
  position: relative;
  background: var(--bg-card); border: 1px solid var(--line);
  box-shadow: 0 1px 0 rgba(20,19,15,0.02);
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
  cursor: pointer; display: flex; flex-direction: column;
  text-decoration: none; color: var(--fg);
}
.prod-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(20,19,15,0.08);
}
.prod-card .media { aspect-ratio: 4/3; position: relative; overflow: hidden; }
.prod-card .meta { padding: 22px 24px 26px; display: flex; flex-direction: column; gap: 10px; }
.prod-card .code {
  font-family: var(--font-mono); font-size: 10px;
  letter-spacing: 0.18em; color: var(--accent); text-transform: uppercase;
}
.prod-card h4 {
  font-family: var(--font-head); font-weight: 600;
  font-size: 22px; text-transform: uppercase;
  letter-spacing: 0.005em; margin: 0; line-height: 1.1;
}
.prod-card .specs { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; }
.prod-card .specs span {
  font-family: var(--font-mono); font-size: 10px;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--fg-dim); padding: 3px 8px; border: 1px solid var(--line);
}
.prod-card .foot {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 24px; border-top: 1px solid var(--line);
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--fg-dim);
  margin-top: auto;
}
.prod-card:hover .foot { color: var(--accent); }

/* ── Partner strip ─────────────────────────────────────────────── */
.partner-strip {
  background: var(--bg-elev);
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: 36px 0; overflow: hidden; position: relative;
}
.partner-strip::before, .partner-strip::after {
  content: ""; position: absolute; top: 0; bottom: 0;
  width: 120px; z-index: 2; pointer-events: none;
}
.partner-strip::before { left: 0; background: linear-gradient(90deg, var(--bg-elev), transparent); }
.partner-strip::after  { right: 0; background: linear-gradient(-90deg, var(--bg-elev), transparent); }
.cert-row {
  display: flex; align-items: center; gap: 48px;
  flex-shrink: 0; padding-right: 48px;
}
.cert {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--fg-dim); white-space: nowrap;
}
.cert .seal {
  width: 38px; height: 38px;
  border: 1px solid var(--fg-dim); border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-head); font-weight: 700; font-size: 12px; color: var(--fg);
}

/* ── Official block ────────────────────────────────────────────── */
.official {
  border: 1px solid var(--line-strong); padding: 56px;
  display: grid; grid-template-columns: auto 1fr auto;
  align-items: center; gap: 48px; position: relative;
  background: var(--bg-card) radial-gradient(circle at 12% 50%, rgba(192,57,43,0.05), transparent 60%);
}
.official-mark {
  width: 120px; height: 120px;
  border: 1px solid var(--accent);
  display: inline-flex; align-items: center; justify-content: center;
  position: relative;
}
.official-mark::before, .official-mark::after {
  content: ""; position: absolute; width: 16px; height: 16px; border: 1px solid var(--accent);
}
.official-mark::before { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.official-mark::after  { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }
.official-mark .seal-body {
  font-family: var(--font-head); font-weight: 700; font-size: 18px;
  text-align: center; line-height: 1.1; padding: 8px;
  color: var(--accent); text-transform: uppercase;
}
.official h3 {
  font-family: var(--font-head); font-weight: 600;
  font-size: 36px; text-transform: uppercase;
  letter-spacing: -0.005em; margin: 0 0 12px; line-height: 1;
}
.official p { color: var(--fg-dim); margin: 0; max-width: 560px; }

/* ── Contact strip ─────────────────────────────────────────────── */
.contact-strip {
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 64px; align-items: start;
}
.contact-info { display: flex; flex-direction: column; gap: 28px; }
.contact-info .row { display: grid; grid-template-columns: 90px 1fr; gap: 16px; align-items: start; }
.contact-info .row label {
  font-family: var(--font-mono); font-size: 10px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--fg-mute); padding-top: 4px;
}
.contact-info .row strong {
  font-family: var(--font-head); font-weight: 600; font-size: 20px;
  text-transform: uppercase; letter-spacing: 0.005em; color: var(--fg); display: block;
}
.contact-info .row span { color: var(--fg-dim); font-size: 14px; }

/* ── Footer ────────────────────────────────────────────────────── */
.footer { margin-top: 120px; border-top: 1px solid var(--line); background: var(--bg-elev); }
.footer-inner {
  max-width: var(--maxw); margin: 0 auto;
  padding: 64px var(--pad-x) 32px;
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 48px;
}
.footer h5 {
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--fg-mute); margin: 0 0 16px;
}
.footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.footer ul a { color: var(--fg-dim); font-size: 14px; cursor: pointer; text-decoration: none; }
.footer ul li { color: var(--fg-dim); font-size: 14px; display: flex; align-items: flex-start; gap: 8px; }
.footer ul a:hover { color: var(--accent); }
.footer-base {
  border-top: 1px solid var(--line);
  padding: 18px var(--pad-x);
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--fg-mute);
  max-width: var(--maxw); margin: 0 auto;
}

/* ── Page header ───────────────────────────────────────────────── */
.page-header {
  padding: 56px 0 40px; border-bottom: 1px solid var(--line);
  margin-bottom: 64px;
  display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 24px;
}
.page-header h1 {
  font-family: var(--font-head); font-weight: 700;
  font-size: clamp(54px, 7vw, 96px); line-height: 0.92;
  letter-spacing: -0.015em; text-transform: uppercase; margin: 12px 0 0;
}
.breadcrumbs {
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--fg-mute); display: flex; gap: 8px; align-items: center;
}
.breadcrumbs a { color: var(--fg-dim); text-decoration: none; }
.breadcrumbs a:hover { color: var(--accent); }
.breadcrumbs .sep { color: var(--fg-mute); }

/* ── Filters sidebar ───────────────────────────────────────────── */
.filters { display: grid; grid-template-columns: 240px 1fr; gap: 48px; align-items: start; }
.filters aside { position: sticky; top: 90px; }
.filter-group { margin-bottom: 28px; }
.filter-group h6 {
  font-family: var(--font-mono); font-size: 10px;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--fg-mute); margin: 0 0 12px;
}
.filter-group ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.filter-group li {
  display: flex; align-items: center; gap: 10px;
  font-size: 14px; color: var(--fg-dim); cursor: pointer; padding: 6px 0;
  border-bottom: 1px solid transparent; transition: color 0.2s ease;
  user-select: none;
}
.filter-group li:hover { color: var(--fg); }
.filter-group li.on { color: var(--accent); }
.filter-group li .chk {
  width: 14px; height: 14px; border: 1px solid var(--line-strong);
  display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.filter-group li.on .chk { background: var(--accent); border-color: var(--accent); }
.filter-group li.on .chk::after { content: "✓"; color: #fff; font-size: 10px; font-weight: 700; }
.filter-search-wrap { position: relative; }
.filter-search-wrap .search-icon {
  position: absolute; left: 10px; top: 50%; transform: translateY(-50%);
  color: var(--fg-mute); pointer-events: none;
}
.filter-search {
  width: 100%; padding: 10px 12px 10px 34px;
  background: var(--bg); border: 1px solid var(--line-strong);
  color: var(--fg); font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.05em;
  outline: none; transition: border-color 0.2s ease;
}
.filter-search:focus { border-color: var(--accent); }

/* ── Product detail ────────────────────────────────────────────── */
.pd-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 64px; align-items: start; }
.pd-media-main { aspect-ratio: 1; border: 1px solid var(--line-strong); position: relative; }
.pd-thumbs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 12px; }
.pd-thumbs .thumb { aspect-ratio: 1; border: 1px solid var(--line); cursor: pointer; transition: border-color 0.2s ease; position: relative; overflow: hidden; }
.pd-thumbs .thumb.on { border-color: var(--accent); }
.pd-side h1 {
  font-family: var(--font-head); font-weight: 700;
  font-size: clamp(40px, 4vw, 64px); line-height: 0.95;
  text-transform: uppercase; letter-spacing: -0.005em; margin: 16px 0;
}
.pd-side p.lead { color: var(--fg-dim); font-size: 16px; }
.spec-table { width: 100%; border-collapse: collapse; margin: 32px 0; font-size: 14px; }
.spec-table th, .spec-table td { padding: 14px 16px; border-bottom: 1px solid var(--line); text-align: left; }
.spec-table th {
  font-family: var(--font-mono); font-size: 10px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--fg-mute); font-weight: 500; width: 40%; vertical-align: top;
}
.spec-table td { color: var(--fg); font-family: var(--font-mono); }

/* ── News ──────────────────────────────────────────────────────── */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.news-card { display: flex; flex-direction: column; gap: 16px; cursor: pointer; text-decoration: none; color: var(--fg); }
.news-card .media { aspect-ratio: 16/10; border: 1px solid var(--line); position: relative; overflow: hidden; }
.news-card .kicker { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent); }
.news-card h4 {
  font-family: var(--font-head); font-weight: 600; font-size: 22px;
  line-height: 1.15; text-transform: uppercase; letter-spacing: 0.005em; margin: 0;
  transition: color 0.25s ease;
}
.news-card:hover h4 { color: var(--accent); }
.news-card .date { font-family: var(--font-mono); font-size: 11px; color: var(--fg-mute); letter-spacing: 0.12em; }

/* ── About ─────────────────────────────────────────────────────── */
.about-hero { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--line); }
.timeline .step { padding: 28px 24px 28px 0; border-right: 1px solid var(--line); position: relative; }
.timeline .step:last-child { border-right: 0; }
.timeline .step::before {
  content: ""; position: absolute; left: 0; top: -1px;
  width: 12px; height: 12px; background: var(--accent); transform: translateY(-50%);
}
.timeline .step .year {
  font-family: var(--font-head); font-weight: 700; font-size: 42px; line-height: 1; margin-bottom: 14px;
}
.timeline .step p { font-size: 13px; color: var(--fg-dim); margin: 0; }

/* ── Contact page ──────────────────────────────────────────────── */
.contact-page { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.map-mock {
  aspect-ratio: 4/3;
  background:
    repeating-linear-gradient(90deg, rgba(20,19,15,0.05) 0 1px, transparent 1px 40px),
    repeating-linear-gradient(0deg, rgba(20,19,15,0.05) 0 1px, transparent 1px 40px),
    linear-gradient(135deg, #F7F4ED 0%, #E6E1D5 100%);
  border: 1px solid var(--line-strong); position: relative;
}
.map-pin {
  position: absolute; left: 42%; top: 48%;
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 6px rgba(192,57,43,0.2), 0 0 0 14px rgba(192,57,43,0.08);
  animation: pulse-dot 2s ease-in-out infinite;
  transform: translate(-50%, -50%);
}
.contact-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 24px; }

/* ── Responsive ────────────────────────────────────────────────── */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { aspect-ratio: 3/2; }
  .why-grid, .ind-grid, .prod-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-meta-strip { grid-template-columns: repeat(2, 1fr); }
  .nav-inner { grid-template-columns: auto 1fr; }
  .nav ul { display: none; }
  .filters { grid-template-columns: 1fr; }
  .pd-grid, .contact-page, .about-hero, .contact-strip { grid-template-columns: 1fr; gap: 40px; }
  .official { grid-template-columns: 1fr; padding: 36px; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .timeline { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .why-grid, .ind-grid, .prod-grid, .news-grid { grid-template-columns: 1fr; }
  .timeline { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .section-head { grid-template-columns: 1fr; }
  .page-header { grid-template-columns: 1fr; }
  .contact-cards { grid-template-columns: 1fr; }
}