@import url("https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@500;600;700&family=DM+Sans:wght@400;500;600;700&display=swap");
@import "variables.css";

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body[data-page="home"] {
  background-image:
    linear-gradient(var(--color-industrial-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-industrial-line) 1px, transparent 1px);
  background-size: 56px 56px;
}

body.nav-open { overflow: hidden; }

img, video { max-width: 100%; display: block; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }

.container {
  width: min(calc(100% - 2 * var(--container-padding)), var(--container-max));
  margin-inline: auto;
  padding-inline: 0;
}

/* Header */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--header-height);
  background-color: var(--header-surface);
  border-bottom: 1px solid var(--header-border);
  transition: var(--transition);
}

.site-header.is-scrolled {
  background-color: var(--header-surface-soft);
  box-shadow: var(--shadow-sm);
  border-bottom-color: var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-md);
}

.brand-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  height: calc(var(--header-height) - 16px);
  min-width: 0;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.brand-logo img {
  display: block;
  height: 100%;
  width: auto;
  max-width: 156px;
  object-fit: contain;
  object-position: left center;
}

.nav-main a {
  position: relative;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--header-text);
  opacity: 0.68;
  transition: var(--transition);
}

.nav-main a:hover,
.nav-main a.is-active {
  opacity: 1;
  color: var(--header-text);
}

.nav-main a.is-active::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.35rem;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-hover));
  border-radius: 2px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.lang-switcher {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.nav-main {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.lang-globe-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--header-text-muted);
  flex-shrink: 0;
  line-height: 0;
}

.lang-globe-icon svg {
  width: 18px;
  height: 18px;
}

.lang-switcher select {
  border: 1px solid var(--color-border-strong);
  background: var(--color-bg);
  color: var(--header-text);
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  cursor: pointer;
  min-width: 4.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent) 0%, #a68452 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(184, 146, 90, 0.28);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-accent-hover) 0%, #8a6d42 100%);
  box-shadow: 0 6px 18px rgba(154, 120, 72, 0.32);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--color-border-strong);
  color: var(--color-text);
}

.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-ghost-light {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.35);
  color: #fff;
}

.btn-ghost-light:hover { background: rgba(255,255,255,0.1); }

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  color: var(--header-text);
}

.menu-toggle:hover { background: var(--color-industrial-line); }

.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(15, 20, 25, 0.45);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

.nav-overlay.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.nav-mobile-extras {
  display: none;
  flex-direction: column;
  gap: var(--space-sm);
  padding-top: var(--space-md);
  margin-top: var(--space-md);
  border-top: 1px solid var(--color-border);
  width: 100%;
}

.nav-mobile-extras .lang-switcher select {
  width: 100%;
  min-height: 44px;
  padding: 0.6rem 0.75rem;
}

.nav-mobile-extras .btn { width: 100%; min-height: 44px; }

/* Hero */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: flex-end;
  padding-top: var(--header-height);
  padding-bottom: var(--space-xl);
  overflow: hidden;
  background: var(--color-bg-dark);
}

.hero-media {
  position: absolute;
  inset: 0;
}

.hero-media img,
.hero-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      100deg,
      rgba(12, 16, 22, 0.88) 0%,
      rgba(12, 16, 22, 0.62) 38%,
      rgba(12, 16, 22, 0.18) 72%,
      rgba(12, 16, 22, 0.08) 100%
    ),
    linear-gradient(
      180deg,
      rgba(12, 16, 22, 0.15) 0%,
      rgba(12, 16, 22, 0.35) 55%,
      rgba(12, 16, 22, 0.72) 100%
    );
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: var(--space-lg) var(--space-md);
  padding-block: var(--space-2xl) var(--space-xl);
  max-width: 920px;
  color: var(--color-text-inverse);
  border-radius: var(--radius-lg);
  background: rgba(10, 14, 22, 0.52);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.28);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-left: 3px solid var(--color-tech-accent);
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: none;
  color: #f8f0e6;
  margin-bottom: var(--space-sm);
  padding: 0.45rem 0.85rem;
  border-left: 3px solid var(--color-accent);
  background: rgba(0, 0, 0, 0.35);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 600;
  line-height: 1.1;
  margin-bottom: var(--space-md);
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.45);
  font-variant-numeric: lining-nums;
  font-feature-settings: "lnum" 1;
}

.hero-subtitle {
  font-size: 1.0625rem;
  color: rgba(240, 237, 232, 0.95);
  max-width: none;
  margin-bottom: var(--space-lg);
  line-height: 1.72;
  text-shadow: 0 1px 12px rgba(0, 0, 0, 0.4);
}

.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-sm); }

/* Sections */
.section { padding-block: var(--space-2xl); }

/* Homepage — tighter vertical rhythm between blocks */
body[data-page="home"] .section {
  padding-block: var(--space-lg);
}

body[data-page="home"] .section:first-of-type {
  padding-top: var(--space-xl);
}

body[data-page="home"] .section-header {
  margin-bottom: var(--space-lg);
}

body[data-page="home"] .site-footer {
  margin-top: var(--space-lg);
}

.section-alt {
  background: var(--color-bg-elevated);
  border-block: 1px solid var(--color-border);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin-inline: auto;
  margin-bottom: var(--space-xl);
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-tech);
  margin-bottom: var(--space-xs);
  padding: 0.35rem 0.85rem;
  border: 1px solid rgba(46, 74, 110, 0.18);
  background: var(--color-tech-soft);
  border-radius: 999px;
}

.section-eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), var(--color-tech-accent));
  flex-shrink: 0;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 600;
  line-height: 1.15;
  font-variant-numeric: lining-nums;
  font-feature-settings: "lnum" 1;
}

.section-lead {
  margin-top: var(--space-sm);
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  background: var(--gradient-industrial);
  color: var(--color-text-inverse);
  padding: var(--space-xl) var(--space-lg);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.stats-grid::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.stat-item {
  text-align: center;
  position: relative;
  z-index: 1;
  padding: var(--space-sm);
}

.stat-item + .stat-item {
  border-left: 1px solid rgba(255, 255, 255, 0.12);
}

.stat-value {
  font-family: var(--font-display);
  font-size: 2.25rem;
  color: var(--color-accent);
  line-height: 1;
  font-variant-numeric: lining-nums;
  font-feature-settings: "lnum" 1;
}

.stat-label {
  margin-top: 0.5rem;
  font-size: 0.82rem;
  opacity: 0.8;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* Advantages */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.advantage-card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: var(--transition);
  border-left: 3px solid transparent;
  box-shadow: var(--shadow-sm);
}

.advantage-card:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(46, 74, 110, 0.22);
  border-left-color: var(--color-tech-accent);
  transform: translateY(-2px);
}

.advantage-card-head {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: 0.75rem;
}

.advantage-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: linear-gradient(145deg, var(--color-tech-soft), var(--color-accent-soft));
  border: 1px solid rgba(46, 74, 110, 0.14);
  display: grid;
  place-items: center;
  flex-shrink: 0;
  color: var(--color-tech);
}

.advantage-icon svg {
  width: 22px;
  height: 22px;
  display: block;
}

.advantage-card-head h3,
.advantage-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin-bottom: 0;
  line-height: 1.2;
}

.advantage-card p { color: var(--color-text-muted); font-size: 0.95rem; }

/* Section header with action link */
.section-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.section-header-inner {
  text-align: left;
}

.section-header-inner .section-eyebrow,
.section-header-inner .section-title {
  text-align: left;
}

.section-link {
  flex-shrink: 0;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
  padding-bottom: 0.35rem;
  transition: var(--transition);
}

.section-link:hover { color: var(--color-accent-hover); }

.section-link-inline {
  display: inline-block;
  margin-top: var(--space-sm);
  padding-bottom: 0;
}

/* Featured products carousel */
.products-carousel {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.products-carousel-viewport {
  flex: 1;
  overflow: hidden;
  min-width: 0;
}

.products-carousel-track {
  display: flex;
  gap: var(--space-md);
  transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
}

.products-carousel-track .product-card {
  flex: 0 0 calc((100% - 2 * var(--space-md)) / 3);
  min-width: 0;
}

.carousel-btn {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
  color: var(--color-text);
  font-size: 1.75rem;
  line-height: 1;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: var(--transition);
  padding-bottom: 2px;
}

.carousel-btn:hover:not(:disabled) {
  border-color: var(--color-accent);
  color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.carousel-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* Product lines */
.lines-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.line-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 420px;
  display: flex;
  align-items: flex-end;
}

.line-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.line-card:hover img { transform: scale(1.04); }

.line-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(15,20,25,0.92) 0%, rgba(15,20,25,0.2) 60%);
}

.line-card-content {
  position: relative;
  z-index: 2;
  padding: var(--space-lg);
  color: #fff;
}

.line-badge {
  display: inline-block;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.line-card h3 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
}

.line-card p {
  font-size: 0.95rem;
  opacity: 0.85;
  margin-bottom: var(--space-sm);
  max-width: 90%;
}

/* Product grid */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
}

.filter-btn {
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
  border-radius: 999px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn.is-active,
.filter-btn:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
  color: var(--color-accent-hover);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.product-card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.product-card:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(46, 74, 110, 0.18);
}

.product-card-image {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: #e8e6e1;
}

.product-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.product-card:hover .product-card-image img { transform: scale(1.05); }

.product-card-body { padding: var(--space-md); }

.product-sku {
  font-size: 0.75rem;
  color: var(--color-accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.product-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin: 0.35rem 0 0.5rem;
}

.product-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.product-card-cta { width: 100%; }

.spec-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: var(--space-sm);
}

.spec-tag {
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  background: var(--color-bg);
  border-radius: 999px;
  color: var(--color-text-muted);
}

/* CTA band */
.cta-band {
  position: relative;
  overflow: hidden;
  background: var(--gradient-cta);
  color: var(--color-text-inverse);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  flex-wrap: wrap;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-lg);
}

.cta-band::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 85% 50%, rgba(74, 122, 184, 0.18), transparent 45%),
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: auto, 28px 28px, 28px 28px;
  pointer-events: none;
}

.cta-band-inner {
  position: relative;
  z-index: 1;
}

.cta-band-lead {
  opacity: 0.88;
  margin-top: 0.5rem;
  max-width: 42rem;
  line-height: 1.68;
  font-size: 0.98rem;
}

.cta-band .btn-primary {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
}

.cta-band h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-variant-numeric: lining-nums;
  font-feature-settings: "lnum" 1;
}

/* Forms */
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group.full { grid-column: 1 / -1; }

.form-group label {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.85rem;
  font-weight: 500;
}

.form-group.is-required > label::after {
  content: '★';
  color: #e03e3e;
  font-size: 0.6rem;
  line-height: 1;
  flex-shrink: 0;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-elevated);
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-soft);
}

.form-feedback {
  margin-top: 1rem;
  font-size: 0.95rem;
  line-height: 1.5;
}

.form-success { color: var(--color-accent); }

.form-error { color: #c0392b; }

.btn[type="submit"]:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

/* Country searchable combobox */
.country-combobox {
  position: relative;
}

.country-combobox-input {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  padding: 0.75rem 2.25rem 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-elevated);
  transition: var(--transition);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%235c6773' d='M2 4l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.85rem center;
}

.country-combobox-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-soft);
}

.country-combobox-list {
  position: absolute;
  z-index: 50;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  max-height: 240px;
  overflow-y: auto;
  margin: 0;
  padding: 0.35rem 0;
  list-style: none;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  -webkit-overflow-scrolling: touch;
}

.country-combobox-option {
  padding: 0.65rem 1rem;
  font-size: 0.92rem;
  cursor: pointer;
  transition: var(--transition);
}

.country-combobox-option:hover,
.country-combobox-option.is-active {
  background: var(--color-accent-soft);
  color: var(--color-accent-hover);
}

.country-combobox-option.is-empty {
  color: var(--color-text-muted);
  cursor: default;
  pointer-events: none;
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(0, 1.25fr);
  gap: var(--space-xl);
  align-items: start;
}

.contact-layout > * {
  min-width: 0;
}

.contact-info-card {
  background: linear-gradient(160deg, #0c121c 0%, #162033 55%, #101a28 100%);
  color: var(--color-text-inverse);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-lg);
  position: sticky;
  top: calc(var(--header-height) + var(--space-md));
}

.contact-layout > form,
.contact-layout > .form-grid {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  width: 100%;
  box-sizing: border-box;
}

.contact-info-card h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  margin-bottom: var(--space-md);
}

.contact-detail {
  margin-bottom: var(--space-md);
  font-size: 0.95rem;
}

.contact-detail-row,
.about-info-item.contact-detail-row {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
}

.contact-detail-row {
  margin-bottom: var(--space-sm);
}

.contact-detail-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--color-accent-soft);
  color: var(--color-accent);
  display: grid;
  place-items: center;
}

.contact-detail-icon svg {
  width: 20px;
  height: 20px;
  display: block;
}

.contact-detail-body {
  flex: 1;
  min-width: 0;
}

.contact-info-card .contact-detail-icon {
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-accent);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.contact-info-card .contact-detail-row {
  margin-bottom: var(--space-md);
}

.contact-info-card .contact-detail-row:last-of-type {
  margin-bottom: 0;
}

.contact-detail-body strong {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.25rem;
}

.contact-detail-body span,
.contact-detail-body a {
  display: block;
  font-size: 0.95rem;
  color: var(--color-text);
  word-break: break-word;
  line-height: 1.5;
}

.contact-detail-body a:hover {
  color: var(--color-accent);
}

.contact-tel-link,
a[href^="tel:"] {
  touch-action: manipulation;
  cursor: pointer;
  -webkit-tap-highlight-color: rgba(184, 146, 90, 0.2);
}

@media (max-width: 767px) {
  .contact-tel-link,
  .contact-detail-body a[href^="tel:"] {
    text-decoration: underline;
    text-underline-offset: 0.18em;
    text-decoration-color: rgba(184, 146, 90, 0.55);
  }

  .contact-info-card .contact-tel-link,
  .contact-info-card .contact-detail-body a[href^="tel:"] {
    text-decoration-color: rgba(184, 146, 90, 0.75);
  }
}

.contact-info-card .contact-detail-body strong {
  color: var(--color-accent);
}

.contact-info-card .contact-detail-body span,
.contact-info-card .contact-detail-body a {
  color: rgba(255, 255, 255, 0.92);
}

.contact-info-card .contact-detail-body a:hover {
  color: #fff;
}

.contact-detail strong {
  display: block;
  color: var(--color-accent);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.social-icon-btn {
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--color-text-inverse);
  transition: var(--transition);
}

.social-icon-btn:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

.contact-info-card .social-icon-btn {
  border-color: rgba(255, 255, 255, 0.22);
}

.social-icon {
  display: grid;
  place-items: center;
  line-height: 0;
}

.social-icon svg {
  width: 20px;
  height: 20px;
}

/* Footer */
.site-footer {
  background: var(--color-bg-dark-soft);
  color: var(--color-text-inverse);
  padding-top: var(--space-lg);
  padding-bottom: var(--space-md);
  margin-top: var(--space-xl);
  border-top: 3px solid transparent;
  border-image: linear-gradient(90deg, var(--color-tech-accent), var(--color-accent), var(--color-tech-accent)) 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-lg);
}

.footer-brand p {
  margin-top: var(--space-sm);
  opacity: 0.7;
  font-size: 0.9rem;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 0.5rem; }
.footer-col a { opacity: 0.75; font-size: 0.9rem; transition: var(--transition); }
.footer-col a:hover { opacity: 1; color: var(--color-accent); }

.footer-bottom {
  margin-top: var(--space-sm);
  padding-top: var(--space-xs);
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  flex-wrap: wrap;
  gap: var(--space-xs);
  font-size: 0.8125rem;
  line-height: 1.4;
  opacity: 0.6;
}

/* Page hero (inner pages) */
.page-hero {
  padding-top: calc(var(--header-height) + var(--space-xl));
  padding-bottom: var(--space-xl);
  background-color: #0c121c;
  background-image: linear-gradient(145deg, #0c121c 0%, #1a2d45 42%, #101926 100%);
  color: #ffffff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  position: relative;
  overflow: hidden;
  min-height: 240px;
  display: flex;
  align-items: center;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.page-hero::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-tech-accent), var(--color-accent), var(--color-tech-accent));
}

.page-hero .container {
  position: relative;
  z-index: 1;
  width: 100%;
  text-align: center;
}

.page-hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.92);
  margin-bottom: var(--space-sm);
  margin-inline: auto;
  padding: 0.35rem 0.85rem;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
}

.page-hero-eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), var(--color-tech-accent));
  flex-shrink: 0;
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 4.5vw, 3.25rem);
  font-weight: 600;
  color: #ffffff;
  line-height: 1.12;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.35);
  font-variant-numeric: lining-nums;
  font-feature-settings: "lnum" 1;
}

.page-hero-lead {
  margin-top: var(--space-sm);
  margin-inline: auto;
  max-width: 42rem;
  font-size: 1.05rem;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.86);
}

.page-intro {
  max-width: 52rem;
  margin-inline: auto;
  margin-bottom: var(--space-xl);
  text-align: center;
}

.page-intro-text {
  font-size: 1.02rem;
  line-height: 1.75;
  color: var(--color-text-muted);
}

/* Back to top (homepage) */
.back-to-top {
  position: fixed;
  right: max(1rem, env(safe-area-inset-right, 0px));
  bottom: max(1.25rem, env(safe-area-inset-bottom, 0px));
  z-index: 900;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid var(--color-border-strong);
  background: var(--color-bg-elevated);
  color: var(--color-tech);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  display: grid;
  place-items: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s, background var(--transition), color var(--transition), border-color var(--transition);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-tech);
  color: #fff;
  border-color: var(--color-tech);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
  display: block;
}

/* Floating contact shortcuts */
.contact-fab {
  position: fixed;
  right: max(1rem, env(safe-area-inset-right, 0px));
  bottom: calc(max(1.25rem, env(safe-area-inset-bottom, 0px)) + 60px);
  z-index: 899;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.contact-fab-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid rgba(20, 28, 40, 0.08);
  background: #ffffff;
  color: #566274;
  box-shadow: 0 6px 20px rgba(12, 18, 28, 0.12), 0 2px 6px rgba(12, 18, 28, 0.06);
  display: grid;
  place-items: center;
  transition: transform var(--transition), box-shadow var(--transition), color var(--transition), background var(--transition);
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.contact-fab-btn:hover {
  color: var(--color-tech);
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(12, 18, 28, 0.16), 0 4px 10px rgba(12, 18, 28, 0.08);
}

.contact-fab-btn--whatsapp:hover {
  color: #25a244;
}

.contact-fab-btn svg {
  width: 22px;
  height: 22px;
  display: block;
}

/* Placeholder images */
.placeholder-img {
  background: linear-gradient(135deg, #2a3544 0%, #1a222d 50%, #3d4f63 100%);
  display: grid;
  place-items: center;
  color: rgba(255,255,255,0.3);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* Solutions */
.solutions-stack {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  align-items: stretch;
}

.solution-block {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 420px;
  display: flex;
  align-items: flex-end;
  height: 100%;
}

.solution-block-bg {
  position: absolute;
  inset: 0;
}

.solution-block-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.solution-block-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(15, 20, 25, 0.78) 0%, rgba(15, 20, 25, 0.22) 55%, rgba(15, 20, 25, 0.05) 100%);
}

.solution-block-inner {
  position: relative;
  z-index: 1;
  width: 100%;
  padding: var(--space-xl) var(--space-lg);
  color: #fff;
}

.solution-block h2,
.solution-block h3 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  margin-bottom: var(--space-sm);
}

.solution-block p {
  font-size: 0.95rem;
  opacity: 0.88;
  max-width: none;
  line-height: 1.65;
}

.solution-block .btn {
  margin-top: var(--space-md);
}

/* Certifications */
.cert-row {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
  opacity: 0.7;
}

.cert-row img { height: 48px; width: auto; filter: grayscale(1); }

/* Product detail layout */
.product-detail-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: start;
}

.product-detail-gallery {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.product-gallery-main {
  width: 100%;
}

.product-gallery-main .placeholder-img {
  width: 100%;
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: #fff;
  overflow: hidden;
}

.product-gallery-main .placeholder-img img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #fff;
}

.product-gallery-thumbs {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 2px;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.product-gallery-thumb {
  flex: 0 0 4.5rem;
  width: 4.5rem;
  height: 4.5rem;
  padding: 0;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  background: #fff;
  transition: border-color 0.2s ease;
}

.product-gallery-thumb:hover {
  border-color: var(--color-accent-soft);
}

.product-gallery-thumb.is-active {
  border-color: var(--color-accent);
}

.product-gallery-thumb.is-broken {
  display: none;
}

.product-gallery-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

@media (min-width: 768px) {
  .product-gallery-thumb {
    flex: 0 0 5rem;
    width: 5rem;
    height: 5rem;
  }
}

.product-detail-loading {
  text-align: center;
  color: var(--color-text-muted);
  padding: var(--space-xl) 0;
}

.product-detail-empty {
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  color: var(--color-text-muted);
}

.product-detail-empty p { margin-bottom: var(--space-md); }

.site-error-banner {
  position: sticky;
  top: 0;
  z-index: 9999;
  padding: 0.85rem 1rem;
  background: #8b2e2e;
  color: #fff;
  text-align: center;
  font-size: 0.92rem;
  line-height: 1.5;
}

.product-card-link {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  height: 100%;
}

.product-card-link:hover { color: inherit; }

.product-detail-info h1 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  margin: 0.5rem 0;
  line-height: 1.15;
}

.product-detail-info .product-summary {
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.product-detail-info .product-meta {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.product-detail-info .spec-tags { margin: 1rem 0; }

.product-detail-info .btn { min-height: 44px; }

.product-downloads {
  margin: 1.25rem 0;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

.product-downloads h3 {
  font-size: 0.95rem;
  margin: 0 0 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.product-download-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.product-download-list a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--color-accent);
  font-size: 0.95rem;
}

.product-download-list a::before {
  content: "↓";
  font-weight: 600;
}

.product-detail-section {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.product-detail-section h2 {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.5vw, 1.75rem);
  margin: 0 0 var(--space-md);
}

.product-media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-md);
}

.product-media-grid .placeholder-img {
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 3 / 4;
  width: 100%;
  background: #fff;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm);
}

.product-media-grid .placeholder-img img {
  display: block;
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  object-position: center;
}

.product-detail-videos .product-media-grid {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.product-video-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.product-video-wrap video {
  width: 100%;
  border-radius: var(--radius-md);
  background: #000;
  aspect-ratio: 16/9;
}

.placeholder-img.is-zoomable {
  cursor: zoom-in;
}

.placeholder-img.is-zoomable:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

body.lightbox-open { overflow: hidden; }

.image-lightbox {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
}

.image-lightbox[hidden] { display: none !important; }

.image-lightbox-backdrop {
  position: absolute;
  inset: 0;
  border: 0;
  background: rgba(10, 14, 20, 0.88);
  cursor: zoom-out;
}

.image-lightbox-panel {
  position: relative;
  z-index: 1;
  width: min(96vw, 1200px);
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
}

.image-lightbox-figure {
  margin: 0;
  width: 100%;
  max-height: calc(92vh - 4rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.image-lightbox-image {
  max-width: 100%;
  max-height: calc(92vh - 6rem);
  object-fit: contain;
  border-radius: var(--radius-md);
  background: #fff;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
}

.image-lightbox-caption {
  color: #f0ede8;
  font-size: 0.9rem;
  text-align: center;
  max-width: 720px;
}

.image-lightbox-counter {
  color: rgba(240, 237, 232, 0.75);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
}

.image-lightbox-close,
.image-lightbox-nav {
  position: absolute;
  border: 0;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background 0.2s ease;
}

.image-lightbox-close:hover,
.image-lightbox-nav:hover {
  background: rgba(255, 255, 255, 0.22);
}

.image-lightbox-close {
  top: -0.25rem;
  right: 0;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  font-size: 1.6rem;
  line-height: 1;
}

.image-lightbox-nav {
  top: 50%;
  transform: translateY(-50%);
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  font-size: 2rem;
  line-height: 1;
}

.image-lightbox-prev { left: -3.25rem; }
.image-lightbox-next { right: -3.25rem; }

@media (max-width: 767px) {
  .image-lightbox-prev { left: 0.25rem; }
  .image-lightbox-next { right: 0.25rem; }
  .image-lightbox-close { top: 0.25rem; right: 0.25rem; }
  .image-lightbox-panel { width: 100%; }
}

.product-video-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Filter bar scroll on narrow screens */
.filter-bar {
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.filter-bar::-webkit-scrollbar { display: none; }

/* Pagination */
.pagination-wrap {
  margin-top: var(--space-xl);
  display: flex;
  justify-content: center;
}

.pagination {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
  justify-content: center;
}

.pagination-pages {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-wrap: wrap;
  justify-content: center;
}

.pagination-btn,
.pagination-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-elevated);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}

.pagination-num {
  min-width: 44px;
  padding: 0.5rem;
}

.pagination-btn:hover:not(.is-disabled),
.pagination-num:hover:not(.is-active) {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.pagination-num.is-active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

.pagination-btn.is-disabled {
  opacity: 0.35;
  pointer-events: none;
  cursor: not-allowed;
}

/* About page (ref. zcblinds.com/about.html) */
.about-banner {
  position: relative;
  min-height: clamp(280px, 42vw, 420px);
  margin-top: var(--header-height);
  background: var(--color-bg-dark-soft) center / cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
}

.about-banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 12, 20, 0.55) 0%, rgba(8, 12, 20, 0.72) 100%);
}

.about-banner-inner {
  position: relative;
  z-index: 1;
  padding: var(--space-xl) var(--container-padding);
}

.about-banner-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  margin: 0 0 var(--space-sm);
  text-transform: uppercase;
}

.about-banner-slogan-zh {
  font-size: clamp(1.25rem, 2.5vw, 1.85rem);
  font-weight: 700;
  margin: 0 0 0.35rem;
  letter-spacing: 0.12em;
}

.about-banner-slogan-en {
  font-size: clamp(0.95rem, 1.8vw, 1.15rem);
  margin: 0;
  opacity: 0.92;
  letter-spacing: 0.04em;
}

.about-intro {
  background: var(--color-bg-elevated);
  padding-top: var(--space-lg);
  padding-bottom: var(--space-lg);
}

.about-intro-inner {
  max-width: 920px;
}

.about-intro-legal {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.8vw, 1.875rem);
  font-weight: 700;
  color: var(--color-about-gold, #c9973f);
  margin: 0 0 var(--space-md);
  line-height: 1.25;
}

.about-intro-copy p {
  color: var(--color-text-muted);
  line-height: 1.85;
  margin-bottom: var(--space-sm);
  font-size: 0.95rem;
}

.about-intro-copy p:last-child {
  margin-bottom: 0;
}

.about-profile-gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.about-profile-gallery-item {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--color-bg-dark-soft);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.about-profile-gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.about-profile-gallery-item.is-placeholder {
  background: linear-gradient(135deg, #2a3544 0%, #1a222d 100%);
}

.about-advantage-section {
  background: var(--color-bg-elevated);
  padding-top: 0;
  padding-bottom: var(--space-xl);
}

.about-advantage-layout {
  display: grid;
  grid-template-columns: minmax(160px, 220px) minmax(0, 1fr);
  gap: var(--space-lg);
  align-items: start;
}

.about-advantage-layout .about-advantage-nav {
  grid-row: 1;
}

.about-advantage-main {
  display: grid;
  gap: var(--space-md);
  min-width: 0;
}

.about-advantage-nav {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  align-self: start;
  padding-top: 0.75rem;
}

.about-advantage-tab {
  border: none;
  background: transparent;
  text-align: left;
  padding: 0.65rem 0;
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color 0.2s ease;
  border-left: 3px solid transparent;
  padding-left: 0.75rem;
}

.about-advantage-tab:hover {
  color: var(--color-about-gold, #c9973f);
}

.about-advantage-tab.is-active {
  color: var(--color-about-gold, #c9973f);
  border-left-color: var(--color-about-gold, #c9973f);
}

.about-advantage-stage {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: var(--space-md);
  align-items: start;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  box-shadow: var(--shadow-sm);
}

.about-advantage-panel-title {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.2vw, 1.75rem);
  font-weight: 700;
  color: var(--color-about-gold, #c9973f);
  margin: 0 0 var(--space-md);
  line-height: 1.25;
}

.about-advantage-panel-text {
  color: #4b4b4b;
  line-height: 1.85;
  margin-bottom: var(--space-sm);
  font-size: 0.9rem;
}

.about-advantage-panel-text:last-of-type {
  margin-bottom: var(--space-sm);
}

.about-advantage-certs {
  margin: var(--space-sm) 0;
  justify-content: flex-start;
  opacity: 1;
}

.about-advantage-certs img {
  height: 52px;
  filter: none;
}

.about-advantage-media {
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, #2a3544 0%, #1a222d 100%);
  min-height: 200px;
}

.about-advantage-media img,
.about-advantage-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.about-advantage-media.is-collage {
  aspect-ratio: 1024 / 546;
  background: #fff;
}

.about-advantage-media.is-collage img {
  object-fit: contain;
  padding: 0.25rem;
}

.about-advantage-media-stack {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 240px;
}

.about-advantage-media-layer {
  position: absolute;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 2px solid #fff;
}

.about-advantage-media-layer img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.about-advantage-media-layer--1 {
  top: 0;
  left: 0;
  width: 58%;
  height: 58%;
  z-index: 1;
}

.about-advantage-media-layer--2 {
  bottom: 0;
  left: 0;
  width: 48%;
  height: 42%;
  z-index: 2;
}

.about-advantage-media-layer--3 {
  top: 0;
  right: 0;
  width: 38%;
  height: 100%;
  z-index: 3;
}

.about-advantage-media-layer.is-hidden {
  display: none;
}

.about-advantage-media.is-stack {
  aspect-ratio: 4 / 3;
  background: #f3f2ef;
}

.about-advantage-media.is-placeholder::after {
  content: 'MEDIA';
  display: grid;
  place-items: center;
  height: 100%;
  color: rgba(255, 255, 255, 0.35);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
}

.about-process {
  background: rgba(0, 6, 32, 0.88);
  color: #fff;
  padding: var(--space-lg) 0;
}

.about-process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  max-width: 720px;
  margin: 0 auto;
}

.about-process-item {
  text-align: center;
}

.about-process-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-sm);
  color: rgba(255, 255, 255, 0.95);
  padding: 0.5rem;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
}

.about-process-icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

.about-process-label {
  font-size: 0.9rem;
  letter-spacing: 0.04em;
}

/* About page — legacy profile (unused) */
.about-profile {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: var(--space-xl);
  align-items: center;
}

.about-profile-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--color-bg-dark-soft);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}

.about-profile-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-profile-media.is-placeholder {
  display: grid;
  place-items: center;
  color: rgba(255, 255, 255, 0.35);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.about-profile-media.is-placeholder::after {
  content: 'COMPANY';
}

.about-profile-content .section-eyebrow {
  text-align: left;
  margin-bottom: var(--space-xs);
}

.about-profile-title {
  text-align: left;
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  margin-bottom: var(--space-md);
}

.about-profile-content p {
  color: var(--color-text-muted);
  font-size: 0.98rem;
  line-height: 1.75;
  margin-bottom: var(--space-sm);
}

.about-profile-content p:last-child {
  margin-bottom: 0;
}

.section-compact-top { padding-bottom: var(--space-md); }

.section-compact {
  padding-top: var(--space-xl);
  padding-bottom: var(--space-sm);
}

.section-compact + .section {
  padding-top: var(--space-md);
}

.about-map-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  background: #fff;
  aspect-ratio: 21 / 9;
  min-height: 280px;
}

.about-map-canvas {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background: #f5f5f5;
}

.about-map-canvas iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.about-info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.about-info-card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.about-info-card h2 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  margin-bottom: var(--space-md);
}

.about-info-lead {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: var(--space-md);
}

.about-info-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.about-maps-link {
  display: inline-flex;
  margin-top: var(--space-md);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.about-maps-link:hover { color: var(--color-accent-hover); }

.about-social-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.about-social-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
  background: var(--color-bg);
}

.about-social-link:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
}

.about-social-link .social-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.about-social-link:hover .social-icon {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.about-social-name {
  font-weight: 600;
  font-size: 0.95rem;
}

/* ─── Tablet & below (≤1023px) ─── */
@media (max-width: 1023px) {
  :root {
    --container-padding: 1.25rem;
    --header-height: var(--header-height-mobile);
  }

  .site-header {
    padding-inline: env(safe-area-inset-left) env(safe-area-inset-right);
  }

  .brand-logo {
    font-size: 1.15rem;
    height: calc(var(--header-height-mobile) - 12px);
  }

  .brand-logo img { max-width: 120px; }

  .header-inner { gap: var(--space-xs); }

  /* 平板使用手机抽屉导航，避免顶栏拥挤 */
  .nav-main:not(.is-open),
  .header-actions .btn,
  .header-actions .lang-switcher { display: none; }

  .menu-toggle { display: flex; align-items: center; justify-content: center; }

  .nav-overlay { display: block; }

  .nav-main.is-open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1001;
    background: var(--header-surface);
    padding: var(--space-md) var(--container-padding);
    padding-bottom: calc(var(--space-md) + env(safe-area-inset-bottom));
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    gap: 0;
  }

  .nav-main.is-open a {
    padding: 0.85rem 0;
    font-size: 1rem;
    border-bottom: 1px solid var(--header-border);
    min-height: 44px;
    display: flex;
    align-items: center;
    color: var(--header-text);
  }

  .nav-main.is-open .nav-mobile-extras { display: flex; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-md); }

  .stat-item + .stat-item { border-left: none; }

  .products-grid { grid-template-columns: repeat(2, 1fr); }

  .footer-grid { grid-template-columns: repeat(2, 1fr); }

  .lines-grid { grid-template-columns: 1fr; }

  .line-card { min-height: 360px; }

  .section { padding-block: var(--space-xl); }

  .hero { min-height: 80vh; }

  .product-detail-layout { gap: var(--space-md); }

  .products-carousel-track .product-card {
    flex: 0 0 calc((100% - var(--space-md)) / 2);
  }

  /* Tablet: stack multi-column layouts that break between 768–1023px */
  .contact-layout {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .contact-info-card {
    position: static;
  }

  .contact-layout .form-grid {
    grid-template-columns: 1fr;
  }

  .product-detail-layout {
    grid-template-columns: 1fr;
  }

  .solutions-stack {
    grid-template-columns: 1fr;
  }

  .about-info-grid {
    grid-template-columns: 1fr;
  }

  .about-advantage-layout {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .about-advantage-nav {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.35rem;
    padding-top: 0;
  }

  .about-advantage-tab {
    border-left: none;
    border-bottom: 2px solid transparent;
    padding: 0.5rem 0.65rem;
    font-size: 0.82rem;
  }

  .about-advantage-tab.is-active {
    border-left-color: transparent;
    border-bottom-color: var(--color-about-gold, #c9973f);
  }

  .about-advantage-stage {
    grid-template-columns: 1fr;
  }

  .about-advantage-media {
    order: -1;
  }
}

/* Tablet landscape / iPad: compact contact info in two columns */
@media (min-width: 768px) and (max-width: 1023px) {
  .contact-info-card {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-md) var(--space-lg);
  }

  .contact-info-card h2,
  .contact-info-card .social-links {
    grid-column: 1 / -1;
  }

  .contact-info-card .contact-detail-row {
    margin-bottom: 0;
  }
}

/* ─── Mobile (≤767px) ─── */
@media (max-width: 767px) {
  :root {
    --container-padding: 1rem;
    --space-2xl: 3.5rem;
    --space-xl: 2.5rem;
  }

  .brand-logo {
    font-size: 1.1rem;
    height: calc(var(--header-height-mobile) - 10px);
  }

  .brand-logo img { max-width: 108px; }

  .hero {
    min-height: 100svh;
    min-height: 100dvh;
  }

  .hero-content {
    padding: var(--space-md);
    padding-block: var(--space-xl) var(--space-lg);
    background: rgba(12, 16, 22, 0.55);
  }

  .hero-title { font-size: clamp(2rem, 8vw, 2.75rem); }

  .hero-subtitle { font-size: 1rem; }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
    min-height: 48px;
  }

  .section { padding-block: var(--space-xl); }

  body[data-page="home"] .section {
    padding-block: var(--space-md);
  }

  body[data-page="home"] .section-header {
    margin-bottom: var(--space-md);
  }

  .section-header { margin-bottom: var(--space-lg); }

  .section-header-row {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }

  .section-link { padding-bottom: 0; }

  .products-carousel-track .product-card {
    flex: 0 0 100%;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
    padding: var(--space-lg);
  }

  .stat-value { font-size: 1.75rem; }

  .back-to-top {
    width: 44px;
    height: 44px;
    right: max(0.75rem, env(safe-area-inset-right, 0px));
    bottom: max(1rem, env(safe-area-inset-bottom, 0px));
  }

  .contact-fab {
    right: max(0.75rem, env(safe-area-inset-right, 0px));
    bottom: calc(max(1rem, env(safe-area-inset-bottom, 0px)) + 52px);
    gap: 0.5rem;
  }

  .contact-fab-btn {
    width: 44px;
    height: 44px;
  }

  .contact-fab-btn svg {
    width: 20px;
    height: 20px;
  }

  .advantages-grid,
  .solutions-stack,
  .contact-layout,
  .form-grid,
  .lines-grid,
  .products-grid,
  .footer-grid,
  .product-detail-layout,
  .about-info-grid,
  .about-profile { grid-template-columns: 1fr; }

  .about-profile-media { order: -1; }

  .about-advantage-layout {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }

  .about-profile-gallery {
    grid-template-columns: 1fr;
  }

  .about-advantage-nav {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.35rem;
    padding-top: 0;
  }

  .about-advantage-tab {
    border-left: none;
    border-bottom: 2px solid transparent;
    padding: 0.5rem 0.65rem;
    font-size: 0.82rem;
  }

  .about-advantage-tab.is-active {
    border-left-color: transparent;
    border-bottom-color: var(--color-about-gold, #c9973f);
  }

  .about-advantage-stage {
    grid-template-columns: 1fr;
  }

  .about-advantage-media {
    order: -1;
  }

  .about-process-grid {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }

  .about-map-wrap {
    aspect-ratio: 4 / 3;
    min-height: 240px;
  }

  .about-info-card { padding: var(--space-md); }

  .line-card { min-height: 300px; }

  .solution-block { min-height: 320px; }

  .line-card h3 { font-size: 1.5rem; }

  .advantage-card,
  .solution-block-inner,
  .contact-info-card { padding: var(--space-md); position: static; }

  .contact-layout > form,
  .contact-layout > .form-grid { padding: var(--space-md); }

  .filter-bar {
    flex-wrap: nowrap;
    overflow-x: auto;
    margin-inline: calc(var(--container-padding) * -1);
    padding-inline: var(--container-padding);
    padding-bottom: 0.25rem;
  }

  .filter-btn {
    flex-shrink: 0;
    min-height: 40px;
    white-space: nowrap;
  }

  .cta-band {
    flex-direction: column;
    text-align: center;
    padding: var(--space-lg);
  }

  .cta-band h2 { font-size: 1.5rem; }

  .cta-band .btn { width: 100%; min-height: 48px; }

  .page-hero {
    padding-top: calc(var(--header-height) + var(--space-lg));
    padding-bottom: var(--space-lg);
  }

  .site-footer {
    padding-top: var(--space-md);
    padding-bottom: calc(var(--space-sm) + env(safe-area-inset-bottom));
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    margin-top: var(--space-xs);
    padding-top: 0.625rem;
  }

  .btn { min-height: 44px; }

  .form-group input,
  .form-group textarea,
  .form-group select {
    min-height: 44px;
    font-size: 16px; /* 防止 iOS 自动缩放 */
  }
}

/* ─── Small phones (≤575px) ─── */
@media (max-width: 575px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }

  .stat-item:nth-child(odd):last-child {
    grid-column: 1 / -1;
  }

  .products-grid { gap: var(--space-sm); }

  .product-card-body { padding: var(--space-sm); }
}

/* ─── Desktop large (≥1280px) ─── */
@media (min-width: 1280px) {
  .container { width: min(100% - 4rem, var(--container-max)); }

  .products-grid { grid-template-columns: repeat(3, 1fr); }
}

/* SEO / GEO */
.seo-faq .section-header {
  margin-bottom: var(--space-lg);
}

.faq-list {
  display: grid;
  gap: var(--space-md);
}

.faq-item {
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-elevated);
}

.faq-item h3 {
  font-family: var(--font-display);
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.faq-item p {
  color: var(--color-text-muted);
  line-height: 1.65;
}

.seo-noscript-links {
  list-style: none;
  display: grid;
  gap: 0.5rem;
  margin-top: var(--space-md);
  padding: var(--space-md);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
}

.seo-noscript-links a {
  color: var(--color-accent);
  text-decoration: underline;
}