/* ============================================
   ZK Space Capsule - Premium Design System
   Zhongke International Consultants (HK) Ltd.
   ============================================ */

/* --- CSS Variables --- */
:root {
  --bg-deep: #0b1011;
  --bg-primary: #101718;
  --bg-surface: #151d1e;
  --bg-card: #182223;
  --bg-elevated: #202d2e;
  --bg-ink: #070b0c;
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-medium: rgba(255, 255, 255, 0.10);
  --border-active: rgba(6, 182, 212, 0.35);
  --text-primary: #e4e7ec;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-cyan: #31c2b5;
  --accent-cyan-dim: rgba(49, 194, 181, 0.14);
  --accent-blue: #65a6b2;
  --accent-green: #7cc48c;
  --accent-green-dim: rgba(124, 196, 140, 0.13);
  --accent-gold: #d5ae5d;
  --accent-gold-dim: rgba(213, 174, 93, 0.12);
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 8px;
  --radius-xl: 8px;
  --font-sans: 'Manrope', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  --transition-fast: 180ms ease;
  --transition-smooth: 320ms cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1280px;
  --header-h: 72px;
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Subtle global grid texture */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(255,255,255,0.008) 2px, rgba(255,255,255,0.008) 4px);
  background-size: 40px 40px;
}

a { color: var(--accent-cyan); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: #22d3ee; }

img, svg { display: block; max-width: 100%; }
video { display: block; max-width: 100%; }

ul { list-style: none; }

/* --- Typography --- */
h1, h2, h3, h4 { font-weight: 600; line-height: 1.2; letter-spacing: 0; }
h1 { font-size: 3.6rem; }
h2 { font-size: 2.55rem; }
h3 { font-size: 1.45rem; }
h4 { font-size: 1.1rem; }

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 0.75rem;
}

.section-title {
  margin-bottom: 0.5rem;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 600px;
}

/* --- Layout Utilities --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
  position: relative;
  z-index: 1;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

@media (max-width: 1024px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
  .section-header { margin-bottom: 40px; }
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-smooth);
  border: 1px solid transparent;
  font-family: var(--font-sans);
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-cyan);
  color: #000;
  border-color: var(--accent-cyan);
}
.btn-primary:hover {
  background: #22d3ee;
  box-shadow: 0 0 32px rgba(6, 182, 212, 0.3);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-medium);
}
.btn-outline:hover {
  border-color: var(--accent-cyan);
  background: var(--accent-cyan-dim);
  box-shadow: 0 0 24px rgba(6, 182, 212, 0.12);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: transparent;
}
.btn-ghost:hover { color: var(--text-primary); background: rgba(255,255,255,0.04); }

.btn-sm { padding: 8px 18px; font-size: 0.82rem; }
.btn-lg { padding: 16px 36px; font-size: 1rem; }

/* --- Header / Navigation --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(8, 8, 15, 0.82);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-subtle);
  transition: background var(--transition-smooth);
}

.site-header.scrolled {
  background: rgba(8, 8, 15, 0.94);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
}

.logo-placeholder {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-medium);
  background:
    linear-gradient(135deg, rgba(6,182,212,0.16), rgba(255,255,255,0.03)),
    var(--bg-card);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  transition: border-color var(--transition-fast);
  box-shadow: inset 0 0 18px rgba(6,182,212,0.08);
}

.logo-area:hover .logo-placeholder {
  border-color: var(--accent-cyan);
}

.logo-text {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.3;
}
.logo-text small {
  display: block;
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--text-muted);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 450;
  transition: all var(--transition-fast);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  background: rgba(255,255,255,0.04);
}

.lang-toggle {
  margin-left: 16px;
  padding: 6px 14px;
  border-radius: 20px;
  border: 1px solid var(--border-medium);
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.78rem;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all var(--transition-fast);
  letter-spacing: 0.02em;
}
.lang-toggle:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

@media (max-width: 1100px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: rgba(12, 12, 24, 0.96);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 4px;
    border-bottom: 1px solid var(--border-subtle);
    transform: translateY(-120%);
    opacity: 0;
    transition: all var(--transition-smooth);
    pointer-events: none;
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-links a { width: 100%; padding: 12px 16px; font-size: 1rem; }
  .lang-toggle { margin-left: 0; margin-top: 12px; width: 100%; text-align: center; padding: 10px; }
}

/* --- Card Component --- */
.card {
  background:
    linear-gradient(180deg, rgba(255,255,255,0.035), transparent 40%),
    var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-smooth);
  position: relative;
}
.card::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.05);
}
.card:hover {
  border-color: var(--border-active);
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.24), 0 8px 40px rgba(6, 182, 212, 0.08);
  transform: translateY(-2px);
}

.card-media {
  aspect-ratio: 16/10;
  background: var(--bg-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}
.card-media img,
.card-media svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.card-media.model-media {
  background: #0a0a12;
}
.card-media.model-media img {
  object-fit: contain;
  padding: 0;
}
.card-media .media-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(12,12,24,0.6) 0%, transparent 40%);
}

.card-body { padding: 24px; }
.card-tag {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 8px;
}
.card-title { font-size: 1.2rem; margin-bottom: 8px; }
.card-desc { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.6; }

/* --- Glass Card --- */
.glass-card {
  background: rgba(22, 22, 40, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-smooth);
}
.glass-card:hover {
  border-color: var(--border-medium);
  background: rgba(28, 28, 51, 0.6);
}

/* --- Hero Section --- */
.hero {
  min-height: calc(100svh - 48px);
  display: flex;
  align-items: center;
  position: relative;
  padding-top: var(--header-h);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
  filter: brightness(0.6) saturate(0.8);
}

.hero-bg .hero-fallback {
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse 60% 50% at 50% 40%, rgba(6,182,212,0.08) 0%, transparent 70%),
    var(--bg-deep);
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to bottom, rgba(8,8,15,0.25) 0%, rgba(8,8,15,0.72) 62%, var(--bg-deep) 100%),
    linear-gradient(90deg, rgba(6,182,212,0.10), transparent 28%, transparent 72%, rgba(16,185,129,0.08));
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
  padding: 40px 24px;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 20px;
  border: 1px solid var(--border-medium);
  background: rgba(255,255,255,0.03);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--accent-cyan);
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
  box-shadow: 0 0 32px rgba(6,182,212,0.08);
}

.hero h1 {
  margin-bottom: 20px;
  font-weight: 700;
  overflow-wrap: anywhere;
}
.hero h1 > span:first-child {
  display: block;
  margin-left: auto;
  margin-right: auto;
  max-width: 11em;
  word-break: break-all;
}

.hero h1 .en-name {
  display: block;
  font-size: 0.45em;
  font-weight: 400;
  color: var(--text-secondary);
  margin-top: 6px;
  letter-spacing: 0.04em;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.hero-tagline {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-models {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 56px;
}

.hero-model-badge {
  padding: 14px 28px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-medium);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.01)),
    rgba(22,22,40,0.58);
  backdrop-filter: blur(8px);
  text-align: center;
  transition: all var(--transition-smooth);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.05);
}
.hero-model-badge:hover {
  border-color: var(--accent-cyan);
  background: rgba(6,182,212,0.08);
  transform: translateY(-2px);
}
.hero-model-badge .model-name {
  display: block;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--text-primary);
}
.hero-model-badge .model-sub {
  display: block;
  font-size: 0.75rem;
  line-height: 1.45;
  color: var(--text-muted);
  margin-top: 4px;
}

/* --- Features Strip --- */
.features-strip {
  position: relative;
  padding: 30px 24px;
  background:
    linear-gradient(90deg, rgba(6, 182, 212, 0.12), transparent 22%, transparent 78%, rgba(180, 139, 76, 0.12)),
    linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.012)),
    var(--bg-deep);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  overflow: hidden;
}
.features-strip::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: linear-gradient(90deg, transparent, #000 18%, #000 82%, transparent);
  pointer-events: none;
}

.features-shell {
  position: relative;
  z-index: 1;
  max-width: 1220px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 24px;
  align-items: stretch;
}

.features-heading {
  min-height: 136px;
  padding: 22px 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-right: 1px solid rgba(255,255,255,0.08);
}
.features-heading span {
  color: var(--accent-cyan);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.features-heading strong {
  max-width: 140px;
  color: var(--text-primary);
  font-size: 1.9rem;
  line-height: 1.06;
  letter-spacing: 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 10px;
  align-items: stretch;
}

.feature-item {
  position: relative;
  min-height: 136px;
  padding: 18px 16px 20px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.052), rgba(255,255,255,0.018)),
    rgba(17, 18, 32, 0.72);
  border: 1px solid rgba(255,255,255,0.075);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast), transform var(--transition-fast), background var(--transition-fast);
}
.feature-item::before,
.feature-item::after {
  content: '';
  position: absolute;
  pointer-events: none;
}
.feature-item::before {
  inset: 0;
  background: linear-gradient(135deg, rgba(46, 230, 255, 0.12), transparent 32%, rgba(180, 139, 76, 0.08));
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.feature-item::after {
  top: 0;
  right: 0;
  width: 38px;
  height: 38px;
  border-top: 1px solid rgba(46, 230, 255, 0.32);
  border-right: 1px solid rgba(46, 230, 255, 0.32);
}
.feature-item:hover {
  border-color: rgba(46, 230, 255, 0.36);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.075), rgba(255,255,255,0.025)),
    rgba(19, 22, 38, 0.86);
  transform: translateY(-2px);
}
.feature-item:hover::before { opacity: 1; }

.feature-item-head {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
}
.feature-code {
  color: #b48b4c;
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  white-space: nowrap;
}
.feature-line {
  height: 1px;
  flex: 1;
  min-width: 16px;
  background: linear-gradient(90deg, rgba(180,139,76,0.5), transparent);
}

.feature-icon {
  position: relative;
  z-index: 1;
  width: 46px;
  height: 46px;
  margin-bottom: 18px;
  border-radius: 12px;
  background:
    linear-gradient(145deg, rgba(46, 230, 255, 0.16), rgba(255,255,255,0.035));
  border: 1px solid rgba(46, 230, 255, 0.18);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.08);
}
.feature-icon svg {
  width: 25px;
  height: 25px;
  fill: none;
  stroke: var(--accent-cyan);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.feature-item .feature-label {
  position: relative;
  z-index: 1;
  font-size: 0.88rem;
  font-weight: 650;
  color: var(--text-primary);
  line-height: 1.35;
  min-height: 2.4em;
  display: flex;
  align-items: flex-end;
}

@media (max-width: 1024px) {
  .features-shell {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .features-heading {
    min-height: auto;
    padding: 0 0 16px;
    border-right: 0;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }
  .features-heading strong {
    max-width: none;
    font-size: 1.5rem;
  }
  .features-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 640px) {
  .features-strip { padding: 24px 18px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-item { min-height: 128px; padding: 16px 14px 18px; }
  .feature-code { font-size: 0.62rem; }
  .feature-icon {
    width: 42px;
    height: 42px;
    margin-bottom: 14px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 2rem;
    line-height: 1.16;
  }
  .hero h1 > span:first-child {
    max-width: 8.2em;
  }
  .hero h1 .en-name {
    font-size: 0.46em;
    max-width: 320px;
    margin-left: auto;
    margin-right: auto;
  }
  .hero-tagline {
    font-size: 1rem;
    max-width: 330px;
  }
  .hero-models {
    gap: 12px;
  }
  .hero-model-badge {
    width: calc(50% - 8px);
    padding: 14px 12px;
  }
}

/* --- Product Cards (Large) --- */
.product-showcase {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  align-items: center;
}

.product-visual {
  aspect-ratio: 4/3;
  background:
    radial-gradient(circle at 25% 15%, rgba(6,182,212,0.10), transparent 36%),
    var(--bg-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-visual img,
.product-visual svg {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 32px;
}
.product-visual.product-photo {
  background: var(--bg-ink);
}
.product-visual.product-photo img {
  padding: 0;
}

.model-card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.model-card {
  color: inherit;
  text-decoration: none;
  min-height: 100%;
}

.model-card .card-body {
  min-height: 168px;
}

.model-card .card-title {
  font-size: 1.05rem;
}

.model-card .card-desc {
  font-size: 0.84rem;
}

.future-card {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.future-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(46, 230, 255, 0.12), transparent 34%, rgba(180, 139, 76, 0.08));
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
  z-index: 1;
}
.future-card:hover::before { opacity: 1; }
.scan-line {
  position: absolute;
  inset: -40% auto -40% -70%;
  width: 42%;
  transform: skewX(-18deg);
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.18), transparent);
  opacity: 0;
  pointer-events: none;
  z-index: 2;
}
.future-card:hover .scan-line {
  opacity: 1;
  animation: scanSweep 1.2s ease-out;
}
@keyframes scanSweep {
  from { left: -70%; }
  to { left: 130%; }
}

.product-lineup-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
}
.product-model-card {
  min-height: 100%;
  color: inherit;
  text-decoration: none;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.045), rgba(255,255,255,0.012)),
    var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: transform var(--transition-smooth), border-color var(--transition-fast), box-shadow var(--transition-fast);
  animation: cardRise 520ms ease-out both;
  animation-delay: calc(var(--stagger, 0) * 70ms);
}
.product-model-card:hover {
  transform: translateY(-6px);
  border-color: rgba(46, 230, 255, 0.36);
  box-shadow: 0 24px 70px rgba(0,0,0,0.28), 0 14px 40px rgba(46,230,255,0.07);
}
.product-model-card:active { transform: translateY(-2px) scale(0.99); }
@keyframes cardRise {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}
.product-model-media {
  position: relative;
  aspect-ratio: 4/3;
  background:
    radial-gradient(circle at 50% 18%, rgba(46,230,255,0.12), transparent 34%),
    var(--bg-ink);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
}
.product-model-media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform var(--transition-smooth), filter var(--transition-smooth);
}
.product-model-card:hover .product-model-media img {
  transform: scale(1.035);
  filter: saturate(1.06) contrast(1.05);
}
.product-model-body {
  position: relative;
  z-index: 3;
  padding: 22px;
}
.product-model-body h3 {
  margin: 10px 0 8px;
  font-size: 1.05rem;
}
.product-model-body p {
  color: var(--text-secondary);
  font-size: 0.86rem;
  line-height: 1.65;
  min-height: 5.1em;
}
.product-model-footer {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.product-model-footer strong {
  color: var(--text-primary);
  font-size: 1.05rem;
  letter-spacing: 0.03em;
}
.product-model-footer span {
  color: var(--accent-cyan);
  font-size: 0.82rem;
  font-weight: 650;
}

@media (max-width: 1100px) {
  .model-card-grid { grid-template-columns: repeat(2, 1fr); }
  .product-lineup-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  .model-card-grid { grid-template-columns: 1fr; }
  .product-lineup-grid { grid-template-columns: 1fr; }
  .product-model-body p { min-height: auto; }
}

.product-info h2 { margin-bottom: 16px; }
.product-info .specs-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 24px 0;
}
.spec-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}
.spec-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cyan);
  flex-shrink: 0;
}

.model-detail-nav-section {
  padding-top: 0;
  padding-bottom: 24px;
}
.detail-model-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}
.detail-model-nav > span {
  color: var(--text-muted);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.detail-model-nav > div {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}
.detail-model-chip {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border: 1px solid var(--border-medium);
  border-radius: 999px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: all var(--transition-fast);
}
.detail-model-chip:hover,
.detail-model-chip.active {
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
  background: var(--accent-cyan-dim);
}

.detail-hero-card {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(320px, 0.8fr);
  gap: 28px;
  align-items: stretch;
}
.detail-hero-media,
.detail-hero-copy {
  background:
    linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.015)),
    var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.detail-hero-media {
  position: relative;
  min-height: 460px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: zoom-in;
}
.detail-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform var(--transition-smooth), filter var(--transition-smooth);
}
.detail-hero-media:hover img {
  transform: scale(1.025);
  filter: saturate(1.05) contrast(1.03);
}
.detail-hero-copy {
  padding: 34px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.detail-hero-copy h2 {
  margin: 12px 0 12px;
  font-size: 2.25rem;
}
.detail-hero-copy p {
  color: var(--text-secondary);
  line-height: 1.75;
  font-size: 0.96rem;
}
.detail-feature-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 30px;
}
.detail-feature-pills span {
  padding: 8px 12px;
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  color: var(--text-secondary);
  background: rgba(255,255,255,0.03);
  font-size: 0.8rem;
}

.detail-gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.detail-gallery-item {
  position: relative;
  aspect-ratio: 4/3;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  overflow: hidden;
  cursor: zoom-in;
  padding: 0;
  color: inherit;
  animation: cardRise 520ms ease-out both;
  animation-delay: calc(var(--stagger, 0) * 55ms);
}
.detail-gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform var(--transition-smooth);
}
.detail-gallery-item:hover {
  border-color: rgba(46,230,255,0.32);
}
.detail-gallery-item:hover img {
  transform: scale(1.035);
}
.detail-gallery-caption {
  position: absolute;
  left: 14px;
  bottom: 12px;
  z-index: 3;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(8,8,15,0.72);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.76rem;
}
.detail-empty-note {
  margin: 18px auto 0;
  max-width: 640px;
  color: var(--text-muted);
  text-align: center;
  font-size: 0.86rem;
  line-height: 1.7;
}

@media (max-width: 768px) {
  .product-showcase { grid-template-columns: 1fr; }
  .detail-hero-card { grid-template-columns: 1fr; }
  .detail-hero-media { min-height: 280px; }
  .detail-hero-copy { padding: 26px; }
  .detail-gallery-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 520px) {
  .detail-gallery-grid { grid-template-columns: 1fr; }
  .detail-model-nav { justify-content: flex-start; }
}

/* --- Category Tabs --- */
.category-tabs {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.category-tab {
  padding: 10px 24px;
  border-radius: 24px;
  border: 1px solid var(--border-medium);
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.category-tab:hover {
  border-color: var(--accent-cyan);
  color: var(--text-primary);
}
.category-tab.active {
  background: var(--accent-cyan-dim);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.category-panel {
  display: none;
}
.category-panel.active {
  display: block;
}

.category-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.category-summary-card {
  min-height: 300px;
  padding: 30px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.045), rgba(255,255,255,0.015)),
    var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.category-summary-card:hover {
  transform: translateY(-4px);
  border-color: rgba(46,230,255,0.28);
  box-shadow: 0 18px 55px rgba(0,0,0,0.22);
}
.category-summary-card h3 {
  margin: 14px 0 18px;
  font-size: 1.25rem;
}
.compact-feature-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.compact-feature-list li {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
  padding-left: 18px;
  position: relative;
}
.compact-feature-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--accent-cyan);
}

@media (max-width: 900px) {
  .category-card-grid { grid-template-columns: 1fr; }
  .category-summary-card { min-height: auto; }
}

/* --- Feature Grid (Detail Page) --- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-smooth);
}
.feature-card:hover {
  border-color: var(--border-active);
  box-shadow: 0 4px 28px rgba(6,182,212,0.05);
  transform: translateY(-2px);
}

.feature-card .fc-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--accent-cyan-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 20px;
}
.fc-icon.icon-line svg {
  width: 26px;
  height: 26px;
  fill: none;
  stroke: var(--accent-cyan);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.feature-card h3 { margin-bottom: 10px; font-size: 1.1rem; }
.feature-card p { color: var(--text-secondary); font-size: 0.88rem; line-height: 1.65; }
.feature-card ul { margin-top: 14px; }
.feature-card li {
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding: 4px 0;
  padding-left: 18px;
  position: relative;
}
.feature-card li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 11px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent-cyan);
}

@media (max-width: 900px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 540px) {
  .feature-grid { grid-template-columns: 1fr; }
}

/* --- Gallery --- */
.gallery-model-groups {
  display: grid;
  gap: 44px;
}
.gallery-model-group {
  padding: 26px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.035), rgba(255,255,255,0.012)),
    var(--bg-card);
}
.gallery-model-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 20px;
}
.gallery-model-heading span {
  color: var(--accent-cyan);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.gallery-model-heading h3 {
  margin-top: 6px;
  font-size: 1.4rem;
}
.gallery-model-heading a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.84rem;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.gallery-model-heading a:hover { color: var(--accent-cyan); }

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.gallery-item {
  aspect-ratio: 4/3;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.04), transparent),
    var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-smooth);
  position: relative;
  padding: 0;
  color: inherit;
  font: inherit;
}
.gallery-item[type="button"] { appearance: none; }
.gallery-item:hover {
  border-color: var(--accent-cyan);
  box-shadow: 0 4px 32px rgba(6,182,212,0.1);
}
.gallery-item img,
.gallery-item svg {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 10px;
}
.gallery-item .gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 12px 16px;
  background: linear-gradient(transparent, rgba(0,0,0,0.8));
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.video-wrapper {
  aspect-ratio: 16/9;
  background: #000;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  margin-bottom: 48px;
}
.video-wrapper video {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

@media (max-width: 768px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-model-heading { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 480px) {
  .gallery-grid { grid-template-columns: 1fr; }
  .gallery-model-group { padding: 18px; }
}

/* --- Lightbox --- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0,0,0,0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-smooth);
}
.lightbox.open {
  opacity: 1;
  pointer-events: auto;
}
.lightbox-content {
  max-width: 90vw;
  max-height: 85vh;
  position: relative;
}
.lightbox-content img,
.lightbox-content svg {
  max-width: 90vw;
  max-height: 85vh;
  object-fit: contain;
}
.lightbox-close {
  position: absolute;
  top: 20px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(0,0,0,0.5);
  color: #fff;
  font-size: 1.4rem;
  cursor: pointer;
  z-index: 201;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}
.lightbox-close:hover { background: rgba(255,255,255,0.15); }

/* --- Contact Page --- */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info-cards {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-card {
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: all var(--transition-fast);
}
.contact-card:hover { border-color: var(--border-medium); }

.contact-card .cc-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--accent-cyan-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--accent-cyan);
  flex-shrink: 0;
}
.contact-card h4 { font-size: 0.95rem; margin-bottom: 6px; }
.contact-card p { font-size: 0.85rem; color: var(--text-muted); }
.contact-card a {
  color: var(--text-primary);
  text-decoration: none;
}
.contact-card a:hover { color: var(--accent-cyan); }

.direct-contact-card {
  padding: 24px;
  background:
    linear-gradient(135deg, rgba(46, 230, 255, 0.09), rgba(255, 255, 255, 0.035)),
    var(--bg-card);
  border: 1px solid rgba(46, 230, 255, 0.22);
  border-radius: var(--radius-md);
}
.direct-contact-card span {
  display: inline-flex;
  margin-bottom: 10px;
  color: var(--accent-cyan);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.direct-contact-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

.contact-form-area {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px;
}

.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text-secondary);
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  transition: border-color var(--transition-fast);
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent-cyan);
}
.form-group textarea { min-height: 120px; resize: vertical; }

@media (max-width: 768px) {
  .contact-layout { grid-template-columns: 1fr; }
}

/* --- About Page --- */
.about-hero {
  padding-top: calc(var(--header-h) + 64px);
  padding-bottom: 64px;
  text-align: center;
}

.about-hero h1 { margin-bottom: 16px; }
.about-hero .lead {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto;
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
  margin: 64px 0;
}

.stat-item .stat-number {
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--accent-cyan);
  letter-spacing: -0.02em;
}
.stat-item .stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 6px;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.value-card {
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
}

.value-card h3 { margin-bottom: 10px; font-size: 1.1rem; }
.value-card p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.65; }

.company-profile-section {
  background:
    linear-gradient(180deg, rgba(255,255,255,0.018), rgba(46,230,255,0.035)),
    var(--bg-primary);
}

.company-profile-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.company-profile-card {
  min-height: 132px;
  padding: 22px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.company-profile-card.wide { grid-column: span 2; }
.company-profile-card span {
  color: var(--text-muted);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.company-profile-card strong,
.company-profile-card a {
  color: var(--text-primary);
  font-size: 1rem;
  line-height: 1.55;
  text-decoration: none;
}
.company-profile-card a:hover { color: var(--accent-cyan); }

@media (max-width: 768px) {
  .stats-row { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .values-grid { grid-template-columns: 1fr; }
  .company-profile-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .company-profile-grid { grid-template-columns: 1fr; }
  .company-profile-card.wide { grid-column: auto; }
}

/* --- Footer --- */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 48px 0 32px;
  background: var(--bg-primary);
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(280px, 2.3fr) 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 12px;
  line-height: 1.6;
}

.footer-meta {
  list-style: none;
  margin-top: 18px;
  padding: 0;
  display: grid;
  gap: 9px;
}

.footer-meta li {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 12px;
  align-items: start;
  color: var(--text-muted);
  font-size: 0.78rem;
  line-height: 1.55;
}

.footer-meta span {
  color: var(--text-secondary);
  white-space: nowrap;
}

.footer-meta strong {
  color: var(--text-muted);
  font-weight: 500;
}

.footer-col h4 {
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  padding: 5px 0;
  color: var(--text-muted);
  font-size: 0.85rem;
  transition: color var(--transition-fast);
}
.footer-col a:hover { color: var(--text-primary); }

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 8px; }
}

/* --- Page Header (non-home pages) --- */
.page-hero {
  padding-top: calc(var(--header-h) + 72px);
  padding-bottom: 48px;
  text-align: center;
  position: relative;
}
.page-hero h1 { margin-bottom: 12px; }
.page-hero p { color: var(--text-secondary); max-width: 560px; margin: 0 auto; font-size: 1.05rem; }

/* --- Divider --- */
.divider {
  width: 60px;
  height: 2px;
  background: var(--accent-cyan);
  margin: 0 auto 24px;
  opacity: 0.5;
}

/* --- Environment Badges --- */
.env-badges {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 32px;
}

.env-badge {
  padding: 8px 18px;
  border-radius: 20px;
  border: 1px solid var(--border-medium);
  font-size: 0.82rem;
  color: var(--text-secondary);
  background: rgba(22,22,40,0.4);
  transition: all var(--transition-fast);
}
.env-badge:hover {
  border-color: var(--accent-green);
  color: var(--accent-green);
}

/* --- Page-specific: Product Tabs --- */
.prod-model-selector {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.prod-model-btn {
  padding: 12px 32px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-medium);
  background: transparent;
  color: var(--text-secondary);
  font-size: 1rem;
  font-family: var(--font-sans);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.prod-model-btn:hover { border-color: var(--accent-cyan); }
.prod-model-btn.active {
  background: var(--accent-cyan-dim);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

/* --- Animations --- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-in {
  animation: fadeUp 0.6s ease forwards;
}

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
  .scan-line {
    display: none;
  }
}

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }

/* --- ZK01-ZK09 Product Website Expansion --- */
*,
*::before,
*::after {
  letter-spacing: 0 !important;
}

.hero-claim {
  margin: 26px auto 14px;
  font-size: 2rem;
  font-weight: 650;
  color: var(--text-primary);
}

.hero-tagline {
  max-width: 680px;
}

.footer-logo {
  margin-bottom: 12px;
}

.section-surface {
  background: var(--bg-primary);
}

.capability-grid,
.module-grid,
.workflow-grid,
.solution-grid,
.value-grid {
  display: grid;
  gap: 18px;
}

.capability-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.capability-card,
.module-card,
.workflow-step,
.solution-card,
.value-tile,
.info-tile {
  padding: 26px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
}

.capability-card strong,
.module-card strong,
.workflow-step strong,
.value-tile strong {
  display: block;
  margin-bottom: 9px;
  color: var(--text-primary);
  font-size: 1.02rem;
}

.capability-card p,
.module-card p,
.workflow-step p,
.solution-card p,
.value-tile p,
.info-tile p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

.capability-card h3,
.module-card h3,
.value-tile h3,
.info-tile h3 {
  margin-bottom: 10px;
  font-size: 1.08rem;
}

.info-tile h2 {
  margin-bottom: 14px;
  font-size: 1.42rem;
}

.catalog-matrix {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.matrix-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6px 16px;
  min-height: 134px;
  padding: 18px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  color: inherit;
}

.matrix-item:hover {
  color: inherit;
  border-color: var(--border-active);
}

.matrix-item .model-code {
  grid-row: span 2;
  color: var(--accent-gold);
  font-size: 0.8rem;
  font-weight: 700;
}

.matrix-item strong {
  font-size: 1rem;
  font-weight: 600;
}

.matrix-item .matrix-area {
  color: var(--text-secondary);
  font-size: 0.84rem;
}

.matrix-item .matrix-use {
  grid-column: 2;
  color: var(--text-muted);
  font-size: 0.78rem;
  line-height: 1.5;
}

.featured-surface {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 40px;
  align-items: center;
  padding: 48px;
  border: 1px solid rgba(213, 174, 93, 0.28);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(120deg, rgba(213, 174, 93, 0.10), transparent 38%),
    var(--bg-card);
}

.featured-surface h2 {
  margin: 14px 0;
}

.featured-surface p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 28px;
}

.feature-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.feature-metric {
  padding: 22px 18px;
  border: 1px solid var(--border-subtle);
  background: rgba(255,255,255,0.025);
  border-radius: var(--radius-md);
}

.feature-metric span {
  display: block;
  color: var(--text-muted);
  font-size: 0.76rem;
  margin-bottom: 8px;
}

.feature-metric strong {
  color: var(--text-primary);
  font-size: 1.32rem;
}

.feature-metrics-wide {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 940px;
  margin: 0 auto;
}

.module-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.module-card:last-child {
  grid-column: span 2;
}

.workflow-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
  counter-reset: workflow;
}

.workflow-step {
  position: relative;
  padding-top: 54px;
}

.workflow-step::before {
  counter-increment: workflow;
  content: "0" counter(workflow);
  position: absolute;
  top: 21px;
  left: 26px;
  color: var(--accent-gold);
  font-weight: 700;
  font-size: 0.82rem;
}

.product-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 42px;
}

.filter-button {
  min-height: 44px;
  padding: 10px 18px;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-secondary);
  font: inherit;
  font-size: 0.88rem;
  cursor: pointer;
}

.filter-button:hover,
.filter-button.active {
  color: var(--bg-deep);
  background: var(--accent-cyan);
  border-color: var(--accent-cyan);
}

.product-lineup-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.product-model-card.featured-model {
  border-color: rgba(213, 174, 93, 0.34);
}

.product-text-visual {
  min-height: 100%;
  width: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 22px;
  background:
    linear-gradient(160deg, rgba(49,194,181,0.10), transparent 48%),
    linear-gradient(0deg, rgba(213,174,93,0.08), transparent 45%),
    var(--bg-surface);
}

.product-text-visual strong {
  color: var(--text-primary);
  font-size: 2.25rem;
}

.product-text-visual span {
  color: var(--text-muted);
  font-size: 0.82rem;
}

.model-slogan {
  min-height: 3em;
  color: var(--text-primary) !important;
  margin: 10px 0 14px;
}

.model-data {
  display: grid;
  gap: 8px;
  margin-top: 14px;
  color: var(--text-secondary);
  font-size: 0.84rem;
}

.model-data span {
  color: var(--text-muted);
  margin-right: 6px;
}

.note-panel {
  max-width: 860px;
  margin: 44px auto 0;
  padding: 22px 26px;
  border-left: 3px solid var(--accent-gold);
  background: var(--bg-card);
  color: var(--text-secondary);
  line-height: 1.7;
}

.note-panel h3 {
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.note-panel .btn {
  margin-top: 18px;
  margin-right: 8px;
}

.detail-hero-media.no-image {
  cursor: default;
}

.detail-hero-media.no-image .product-text-visual {
  justify-content: center;
  padding: 48px;
}

.detail-hero-media.no-image .product-text-visual strong {
  font-size: 4rem;
}

.detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 27px;
}

.detail-spec-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.detail-spec-grid .info-tile:first-child,
.detail-spec-grid .info-tile:nth-child(2) {
  border-color: var(--border-active);
}

.info-tile span {
  display: block;
  color: var(--text-muted);
  font-size: 0.78rem;
  margin-bottom: 8px;
}

.info-tile strong {
  font-size: 1.08rem;
}

.solution-grid {
  gap: 16px;
}

.solution-card {
  display: grid;
  grid-template-columns: minmax(180px, 0.8fr) minmax(260px, 1.35fr) auto;
  gap: 28px;
  align-items: center;
  transition: border-color var(--transition-fast);
}

.solution-card:hover {
  border-color: var(--border-active);
}

.solution-card h2 {
  font-size: 1.4rem;
  margin-bottom: 10px;
}

.solution-card .solution-slogan {
  color: var(--text-primary);
  font-size: 1.04rem;
  margin-bottom: 10px;
}

.solution-models {
  color: var(--accent-cyan);
  font-size: 0.88rem;
}

.solution-grid-full {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.solution-grid-full .solution-card {
  display: block;
  min-height: 300px;
}

.solution-grid-full .solution-card strong {
  display: block;
  margin: 20px 0 8px;
  color: var(--accent-cyan);
  font-size: 0.88rem;
}

.solution-grid-full .solution-card .btn {
  margin-top: 22px;
}

.zk06-hero {
  padding: 136px 0 78px;
}

.zk06-stage {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 52px;
  align-items: center;
}

.zk06-stage h1 {
  margin: 12px 0 18px;
}

.zk06-copy .hero-claim {
  margin: 12px 0 18px;
}

.zk06-stage .lead {
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.8;
  margin: 0 0 32px;
}

.stack-display {
  min-height: 438px;
  position: relative;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(49,194,181,0.08), transparent),
    var(--bg-card);
  overflow: hidden;
}

.stack-unit {
  position: absolute;
  width: 74%;
  height: 112px;
  right: 12%;
  border: 1px solid rgba(49,194,181,0.42);
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  padding: 20px 24px;
}

.stack-unit.upper {
  top: 98px;
  right: 19%;
}

.stack-unit.lower {
  top: 226px;
}

.stack-unit strong {
  display: block;
  font-size: 1.18rem;
}

.stack-unit span {
  color: var(--text-secondary);
  font-size: 0.86rem;
}

.stack-link {
  position: absolute;
  top: 116px;
  right: 9%;
  bottom: 96px;
  border-left: 1px solid var(--accent-gold);
}

.stack-link::before,
.stack-link::after {
  content: "";
  position: absolute;
  right: -5px;
  width: 10px;
  height: 10px;
  background: var(--accent-gold);
  border-radius: 50%;
}

.stack-link::before { top: 0; }
.stack-link::after { bottom: 0; }

.value-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.shape-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.shape-card {
  padding: 30px;
  min-height: 224px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
}

.shape-card span {
  display: block;
  margin-bottom: 18px;
  color: var(--accent-gold);
  font-size: 0.78rem;
  font-weight: 700;
}

.shape-card h3 {
  margin-bottom: 12px;
}

.shape-card p {
  color: var(--text-secondary);
  line-height: 1.7;
}

.gallery-note {
  margin-top: 28px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.video-grid .video-wrapper {
  margin-bottom: 18px;
}

.video-grid h3 {
  font-size: 1.05rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 18px;
}

.form-grid .full {
  grid-column: 1 / -1;
}

.form-note {
  margin-top: 18px;
  color: var(--text-muted);
  font-size: 0.84rem;
  line-height: 1.7;
}

.direct-phone {
  display: block;
  margin: 8px 0 16px;
  color: var(--text-primary);
  font-size: 1.9rem;
  font-weight: 600;
}

.contact-card {
  display: block;
}

.contact-card h3 {
  margin-bottom: 8px;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.stats-row {
  margin: 0;
}

.stat-item strong {
  display: block;
  color: var(--accent-cyan);
  font-size: 2.1rem;
  font-weight: 650;
}

.stat-item span {
  display: block;
  margin-top: 7px;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.company-profile-lines {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.company-profile-lines p {
  display: grid;
  grid-template-columns: 86px 1fr;
  gap: 12px;
  margin: 0;
}

.company-profile-lines strong {
  font-size: 0.84rem;
}

.company-profile-lines span {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.86rem;
}

@media (max-width: 1024px) {
  h1 { font-size: 2.9rem; }
  h2 { font-size: 2.18rem; }
  .capability-grid,
  .module-grid,
  .value-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .catalog-matrix,
  .product-lineup-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .workflow-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .featured-surface,
  .zk06-stage { grid-template-columns: 1fr; }
  .solution-card { grid-template-columns: 1fr; }
  .solution-grid-full { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  h1 { font-size: 2.18rem; }
  h2 { font-size: 1.8rem; }
  h3 { font-size: 1.28rem; }
  .hero-claim { font-size: 1.5rem; }
  .catalog-matrix,
  .capability-grid,
  .module-grid,
  .workflow-grid,
  .value-grid,
  .shape-grid,
  .detail-spec-grid,
  .form-grid,
  .feature-metrics-wide,
  .video-grid { grid-template-columns: 1fr; }
  .module-card:last-child { grid-column: auto; }
  .featured-surface { padding: 28px 20px; }
  .feature-metrics { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 12px; }
  .company-profile-lines p { grid-template-columns: 1fr; gap: 4px; }
  .zk06-hero { padding-top: 112px; }
  .stack-display { min-height: 356px; }
  .stack-unit { height: 96px; padding: 16px; }
  .stack-unit.upper { top: 74px; }
  .stack-unit.lower { top: 190px; }
  .stack-link { top: 89px; bottom: 84px; }
}
::-webkit-scrollbar-thumb { background: var(--border-medium); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* --- Tech corner accents --- */
.tech-corner {
  position: relative;
}
.tech-corner::before {
  content: '';
  position: absolute;
  top: -1px;
  left: -1px;
  width: 20px;
  height: 20px;
  border-top: 1px solid var(--accent-cyan);
  border-left: 1px solid var(--accent-cyan);
  opacity: 0.4;
}
.tech-corner::after {
  content: '';
  position: absolute;
  bottom: -1px;
  right: -1px;
  width: 20px;
  height: 20px;
  border-bottom: 1px solid var(--accent-cyan);
  border-right: 1px solid var(--accent-cyan);
  opacity: 0.4;
}