/* CSS RESET & VARIABLES */
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    :root {
      --ink: #2B2E31;
      --charcoal: #4E5254;
      --gold: #DFB650;
      --gold-deep: #A87C16;
      --paper: #FFFFFF;
      --paper-alt: #F6F6F4;
      --line: #E4E4E0;
      --gold-tint: #FBF5E6;
      --gold-hover: #E5C368;
      
      --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      --font-heading: 'Space Grotesk', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
      
      --container-max: 1240px;
      --radius-sm: 4px;
      --radius-md: 6px;
      --radius-lg: 8px;
    }

    html {
      scroll-behavior: smooth;
      /* ponytail: keeps anchor targets clear of the sticky header */
      scroll-padding-top: 104px;
      background-color: var(--paper);
      color: var(--charcoal);
      font-family: var(--font-body);
      font-size: 16px;
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

    body {
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }

    /* TYPOGRAPHY */
    h1, h2, h3, h4, h5, h6 {
      font-family: var(--font-heading);
      color: var(--ink);
      font-weight: 700;
      line-height: 1.18;
      letter-spacing: -0.02em;
    }

    h1 {
      font-size: clamp(2.25rem, 4.5vw, 3.4rem);
      letter-spacing: -0.03em;
      line-height: 1.1;
    }

    h2 {
      font-size: clamp(1.8rem, 3.2vw, 2.4rem);
      margin-bottom: 12px;
    }

    h3 {
      font-size: 1.28rem;
      margin-bottom: 8px;
    }

    h4 {
      font-size: 1.08rem;
    }

    p {
      max-width: 68ch;
    }

    .eyebrow {
      font-family: var(--font-mono);
      font-size: 0.78rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.12em;
      color: var(--gold-deep);
      margin-bottom: 12px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .eyebrow::before {
      content: "";
      display: inline-block;
      width: 8px;
      height: 8px;
      background-color: var(--gold);
      border-radius: 1px;
    }

    .lead-text {
      font-size: 1.08rem;
      color: var(--charcoal);
      line-height: 1.65;
    }

    /* LAYOUT HELPERS */
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    .section {
      padding: 96px 0;
      position: relative;
    }

    .section-sm {
      padding: 64px 0;
    }

    .bg-paper {
      background-color: var(--paper);
    }

    .bg-paper-alt {
      background-color: var(--paper-alt);
    }

    .bg-gold-tint {
      background-color: var(--gold-tint);
    }

    .section-header {
      margin-bottom: 48px;
    }

    .section-header.center {
      text-align: center;
    }

    .section-header.center .eyebrow {
      justify-content: center;
    }

    .section-header.center p {
      margin-left: auto;
      margin-right: auto;
    }

    /* BUTTONS & CONTROLS */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      font-family: var(--font-body);
      font-size: 0.95rem;
      font-weight: 600;
      text-decoration: none;
      padding: 13px 26px;
      border-radius: var(--radius-sm);
      transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
      cursor: pointer;
      border: 1px solid transparent;
      line-height: 1.2;
    }

    .btn-primary {
      background-color: var(--gold);
      color: var(--ink);
      border-color: var(--gold);
      box-shadow: 0 2px 6px rgba(43, 46, 49, 0.08);
    }

    .btn-primary:hover {
      background-color: var(--gold-hover);
      border-color: var(--gold-hover);
      transform: translateY(-1px);
      box-shadow: 0 4px 12px rgba(43, 46, 49, 0.14);
    }

    .btn-secondary {
      background-color: #FFFFFF;
      color: var(--ink);
      border-color: var(--line);
      box-shadow: 0 1px 3px rgba(43, 46, 49, 0.04);
    }

    .btn-secondary:hover {
      background-color: var(--paper-alt);
      border-color: var(--charcoal);
      transform: translateY(-1px);
    }

    .btn-sm {
      padding: 9px 18px;
      font-size: 0.88rem;
    }

    .btn-block {
      width: 100%;
    }

    :focus-visible {
      outline: 2px solid var(--gold);
      outline-offset: 3px;
    }

    /* IMAGES */
    img {
      max-width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
    }

    /* 1. STICKY HEADER */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background-color: rgba(255, 255, 255, 0.97);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--line);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 92px;
    }

    .logo-container {
      display: flex;
      align-items: center;
      text-decoration: none;
    }

    .header-logo {
      height: 58px;
      width: auto;
      display: block;
    }

    .desktop-nav {
      display: flex;
      align-items: center;
      gap: 32px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }

    .nav-link {
      font-size: 0.92rem;
      font-weight: 500;
      color: var(--ink);
      text-decoration: none;
      transition: color 0.15s ease;
      position: relative;
    }

    .nav-link:hover {
      color: var(--gold-deep);
    }

    /* Mobile Menu details/summary */
    .mobile-menu-wrapper {
      display: none;
      position: relative;
    }

    .mobile-menu-summary {
      list-style: none;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      width: 44px;
      height: 44px;
      border: 1px solid var(--line);
      border-radius: var(--radius-sm);
      background-color: var(--paper);
    }

    .mobile-menu-summary::-webkit-details-marker {
      display: none;
    }

    .hamburger-icon {
      width: 20px;
      height: 14px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .hamburger-icon span {
      display: block;
      width: 100%;
      height: 2px;
      background-color: var(--ink);
      border-radius: 1px;
      transition: transform 0.2s ease, opacity 0.2s ease;
    }

    .mobile-menu-dropdown {
      position: absolute;
      top: calc(100% + 12px);
      right: 0;
      width: 260px;
      background-color: var(--paper);
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      box-shadow: 0 16px 32px -4px rgba(43, 46, 49, 0.15);
      padding: 16px;
      display: flex;
      flex-direction: column;
      gap: 12px;
      z-index: 1001;
    }

    .mobile-nav-link {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--ink);
      text-decoration: none;
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      transition: background-color 0.15s ease, color 0.15s ease;
    }

    .mobile-nav-link:hover {
      background-color: var(--paper-alt);
      color: var(--gold-deep);
    }

    /* 2. HERO SECTION */
    .hero-section {
      position: relative;
      min-height: 600px;
      padding: 100px 0 110px 0;
      display: flex;
      align-items: center;
      overflow: hidden;
      background-color: var(--paper);
    }

    .hero-bg-wrapper {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      z-index: 1;
    }

    .hero-bg-img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      object-position: center;
    }

    .hero-scrim {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      /* ponytail: left-weighted so the headline keeps contrast while the plant photo stays visible on the right */
      background: linear-gradient(100deg, rgba(255, 255, 255, 0.93) 0%, rgba(255, 255, 255, 0.86) 34%, rgba(255, 255, 255, 0.52) 68%, rgba(255, 255, 255, 0.28) 100%);
    }

    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 820px;
    }

    .hero-badge-row {
      margin-bottom: 20px;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background-color: rgba(255, 255, 255, 0.92);
      border: 1px solid var(--line);
      padding: 6px 14px;
      border-radius: 20px;
      font-family: var(--font-mono);
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--ink);
      letter-spacing: 0.08em;
      text-transform: uppercase;
      box-shadow: 0 2px 6px rgba(43, 46, 49, 0.04);
    }

    .hero-badge-dot {
      width: 8px;
      height: 8px;
      background-color: var(--gold);
      border-radius: 50%;
    }

    .hero-title {
      color: var(--ink);
      margin-bottom: 20px;
    }

    .hero-subline {
      font-size: clamp(1.05rem, 1.8vw, 1.25rem);
      line-height: 1.55;
      color: var(--ink);
      margin-bottom: 36px;
      font-weight: 400;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 16px;
    }

    /* 3. TRUST STRIP */
    .trust-strip {
      background-color: var(--paper-alt);
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
      padding: 18px 0;
    }

    .trust-strip-inner {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: center;
      gap: 12px 20px;
      text-align: center;
    }

    .trust-item {
      font-family: var(--font-mono);
      font-size: 0.82rem;
      font-weight: 600;
      color: var(--charcoal);
      letter-spacing: 0.04em;
      text-transform: uppercase;
    }

    .trust-sep {
      color: var(--gold-deep);
      font-size: 0.7rem;
      user-select: none;
    }

    /* 4. CAPABILITY BLOCKS (ALTERNATING SPLITS) */
    .split-block {
      display: grid;
      grid-template-columns: 55% 45%;
      align-items: center;
      gap: 48px;
      margin-bottom: 80px;
    }

    .split-block:last-child {
      margin-bottom: 0;
    }

    .split-block.reverse {
      grid-template-columns: 45% 55%;
    }

    .split-block.reverse .split-media {
      order: 2;
    }

    .split-block.reverse .split-content {
      order: 1;
    }

    .split-media {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--line);
      box-shadow: 0 4px 16px rgba(43, 46, 49, 0.04);
    }

    .split-img {
      width: 100%;
      aspect-ratio: 16 / 10;
      object-fit: cover;
      display: block;
      transition: transform 0.4s ease;
    }

    .split-media:hover .split-img {
      transform: scale(1.02);
    }

    .split-content {
      display: flex;
      flex-direction: column;
    }

    .split-title {
      font-size: clamp(1.4rem, 2.2vw, 1.85rem);
      margin-bottom: 12px;
      color: var(--ink);
    }

    .split-desc {
      font-size: 0.98rem;
      color: var(--charcoal);
      margin-bottom: 24px;
      line-height: 1.6;
    }

    .bullet-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .bullet-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 0.94rem;
      line-height: 1.55;
      color: var(--charcoal);
    }

    .bullet-icon {
      flex-shrink: 0;
      width: 20px;
      height: 20px;
      background-color: var(--gold-tint);
      border: 1px solid var(--gold);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-top: 2px;
      color: var(--gold-deep);
      font-size: 0.75rem;
      font-weight: 700;
    }

    .bullet-item strong {
      color: var(--ink);
      font-weight: 600;
    }

    /* 5. INFRASTRUCTURE SECTION */
    .infra-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: start;
    }

    .table-card {
      background-color: var(--paper);
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: 0 4px 16px rgba(43, 46, 49, 0.03);
    }

    .facility-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.92rem;
    }

    .facility-table th {
      background-color: var(--paper-alt);
      font-family: var(--font-mono);
      font-size: 0.76rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: var(--charcoal);
      padding: 14px 20px;
      border-bottom: 1px solid var(--line);
    }

    .facility-table td {
      padding: 12px 20px;
      border-bottom: 1px solid var(--line);
      color: var(--ink);
    }

    .facility-table tr:last-child td {
      border-bottom: none;
    }

    .facility-table .total-row {
      background-color: rgba(223, 182, 80, 0.12);
      font-weight: 700;
    }

    .facility-table .total-row td {
      color: var(--ink);
      border-bottom: 2px solid var(--gold);
    }

    .area-number {
      font-family: var(--font-mono);
      font-weight: 600;
      text-align: right;
      white-space: nowrap;
    }

    .facility-table th:last-child {
      text-align: right;
    }

    .infra-photo-card {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--line);
      box-shadow: 0 4px 16px rgba(43, 46, 49, 0.04);
      height: 100%;
      display: flex;
      flex-direction: column;
    }

    .infra-tall-img {
      width: 100%;
      height: 100%;
      min-height: 480px;
      aspect-ratio: 2 / 3;
      object-fit: cover;
      display: block;
    }

    .infra-photo-caption {
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      /* ponytail: heavier ramp — the caption has to stay readable over bright photo bottoms too */
      background: linear-gradient(to top, rgba(43, 46, 49, 0.96) 0%, rgba(43, 46, 49, 0.88) 45%, rgba(43, 46, 49, 0.55) 75%, transparent 100%);
      padding: 48px 20px 18px 20px;
      color: #FFFFFF;
    }

    .infra-caption-tag {
      font-family: var(--font-mono);
      font-size: 0.72rem;
      font-weight: 700;
      color: var(--gold);
      letter-spacing: 0.1em;
      text-transform: uppercase;
      margin-bottom: 4px;
      display: block;
    }

    .infra-caption-title {
      font-family: var(--font-heading);
      font-size: 1.05rem;
      font-weight: 600;
      color: #FFFFFF;
      line-height: 1.3;
    }

    /* 6. 4-UP PHOTO CARD GRID */
    .cards-4up-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .capability-card {
      background-color: var(--paper);
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    }

    .capability-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 24px -4px rgba(43, 46, 49, 0.08);
      border-color: #D2D2CC;
    }

    .card-media {
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid var(--line);
    }

    .card-img {
      width: 100%;
      aspect-ratio: 16 / 10;
      object-fit: cover;
      display: block;
      transition: transform 0.3s ease;
    }

    .capability-card:hover .card-img {
      transform: scale(1.03);
    }

    .card-body {
      padding: 20px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }

    .card-step-tag {
      font-family: var(--font-mono);
      font-size: 0.72rem;
      font-weight: 700;
      color: var(--gold-deep);
      letter-spacing: 0.08em;
      text-transform: uppercase;
      margin-bottom: 6px;
    }

    .card-title {
      font-size: 1.12rem;
      margin-bottom: 8px;
      color: var(--ink);
    }

    .card-caption {
      font-size: 0.88rem;
      line-height: 1.5;
      color: var(--charcoal);
    }

    /* 7. TESTING & VALIDATION MASONRY GALLERY */
    .testing-gallery-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-bottom: 36px;
    }

    .test-gallery-item {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--line);
      box-shadow: 0 4px 16px rgba(43, 46, 49, 0.04);
      background-color: var(--paper);
    }

    .test-gallery-item.wide-span {
      grid-column: span 3;
    }

    .test-gallery-img-portrait {
      width: 100%;
      aspect-ratio: 3 / 4;
      object-fit: cover;
      display: block;
      transition: transform 0.35s ease;
    }

    .test-gallery-img-landscape {
      width: 100%;
      aspect-ratio: 21 / 9;
      object-fit: cover;
      display: block;
      transition: transform 0.35s ease;
    }

    .test-gallery-item:hover img {
      transform: scale(1.02);
    }

    .test-gallery-overlay {
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      background: linear-gradient(to top, rgba(43, 46, 49, 0.94) 0%, rgba(43, 46, 49, 0.72) 65%, transparent 100%);
      padding: 24px 20px 18px 20px;
      color: #FFFFFF;
    }

    .test-tag {
      display: inline-block;
      background-color: var(--gold);
      color: var(--ink);
      font-family: var(--font-mono);
      font-size: 0.7rem;
      font-weight: 700;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      padding: 3px 8px;
      border-radius: var(--radius-sm);
      margin-bottom: 8px;
    }

    .test-item-title {
      font-family: var(--font-heading);
      font-size: 1.15rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 6px;
      line-height: 1.25;
    }

    .test-item-desc {
      font-size: 0.84rem;
      color: #E4E4E0;
      line-height: 1.45;
      max-width: 90%;
    }

    .testing-standards-ribbon {
      background-color: var(--paper);
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      padding: 16px 24px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-around;
      gap: 16px;
    }

    .test-std-pill {
      font-family: var(--font-mono);
      font-size: 0.82rem;
      font-weight: 600;
      color: var(--ink);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .test-std-pill::before {
      content: "✓";
      color: var(--gold-deep);
      font-weight: 700;
    }

    /* 8. STATS BAND */
    .stats-section {
      background-color: var(--paper-alt);
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
      padding: 64px 0;
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
    }

    .stat-card {
      display: flex;
      flex-direction: column;
    }

    .stat-number-wrapper {
      display: flex;
      align-items: baseline;
      gap: 6px;
      margin-bottom: 8px;
    }

    .stat-number {
      font-family: var(--font-heading);
      font-size: clamp(2.4rem, 4vw, 3.2rem);
      font-weight: 700;
      color: var(--gold-deep);
      line-height: 1;
      letter-spacing: -0.03em;
    }

    .stat-unit {
      font-family: var(--font-mono);
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--charcoal);
      text-transform: uppercase;
    }

    .stat-title {
      font-family: var(--font-heading);
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--ink);
      margin-bottom: 4px;
    }

    .stat-sub {
      font-size: 0.86rem;
      color: var(--charcoal);
      line-height: 1.45;
    }

    /* 9. QUALITY & COMPLIANCE */
    .quality-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }

    .quality-card {
      background-color: var(--paper);
      border: 1px solid var(--line);
      border-top: 3px solid var(--gold);
      border-radius: var(--radius-sm);
      padding: 32px 28px;
      box-shadow: 0 2px 10px rgba(43, 46, 49, 0.03);
      display: flex;
      flex-direction: column;
    }

    .quality-card-icon {
      font-family: var(--font-mono);
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--gold-deep);
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.08em;
    }

    .quality-title {
      font-size: 1.3rem;
      margin-bottom: 14px;
      color: var(--ink);
    }

    .quality-text {
      font-size: 0.92rem;
      line-height: 1.6;
      color: var(--charcoal);
      margin-bottom: 16px;
    }

    .quality-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
      margin-top: auto;
      padding-top: 14px;
      border-top: 1px solid var(--line);
    }

    .quality-list-item {
      font-size: 0.86rem;
      color: var(--ink);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .quality-list-item::before {
      content: "•";
      color: var(--gold-deep);
      font-weight: 700;
      font-size: 1.1rem;
    }

    /* 10. CONTACT / CTA BAND */
    .cta-band {
      background-color: var(--gold-tint);
      border-top: 1px solid #EDE2C7;
      border-bottom: 1px solid #EDE2C7;
      padding: 88px 0;
    }

    .cta-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: start;
    }

    .cta-info-block {
      display: flex;
      flex-direction: column;
    }

    .cta-title {
      font-size: clamp(2rem, 3.2vw, 2.6rem);
      margin-bottom: 16px;
      color: var(--ink);
    }

    .cta-desc {
      font-size: 1.02rem;
      line-height: 1.6;
      color: var(--charcoal);
      margin-bottom: 32px;
    }

    .cta-features-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-bottom: 32px;
    }

    .cta-feature-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 0.94rem;
      line-height: 1.5;
      color: var(--ink);
    }

    .cta-feature-badge {
      flex-shrink: 0;
      width: 24px;
      height: 24px;
      background-color: #FFFFFF;
      border: 1px solid var(--gold);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--gold-deep);
      font-weight: 700;
      font-size: 0.8rem;
      margin-top: 1px;
    }

    .cta-direct-contact {
      background-color: rgba(255, 255, 255, 0.7);
      border: 1px solid #E8D9B4;
      border-radius: var(--radius-md);
      padding: 18px 22px;
      font-size: 0.9rem;
      color: var(--ink);
    }

    .cta-direct-contact a {
      color: var(--gold-deep);
      text-decoration: none;
      font-weight: 600;
    }

    .cta-direct-contact a:hover {
      text-decoration: underline;
    }

    /* RFQ Form Card */
    .rfq-form-card {
      background-color: var(--paper);
      border: 1px solid #E4E0D2;
      border-radius: var(--radius-md);
      padding: 36px 32px;
      box-shadow: 0 8px 24px rgba(43, 46, 49, 0.06);
    }

    .form-header {
      margin-bottom: 24px;
    }

    .form-header h3 {
      font-size: 1.35rem;
      margin-bottom: 6px;
      color: var(--ink);
    }

    .form-header p {
      font-size: 0.88rem;
      color: var(--charcoal);
    }

    .rfq-form {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .form-group label {
      font-size: 0.86rem;
      font-weight: 600;
      color: var(--ink);
    }

    .form-control {
      font-family: var(--font-body);
      font-size: 0.92rem;
      padding: 11px 14px;
      border: 1px solid var(--line);
      border-radius: var(--radius-sm);
      background-color: #FFFFFF;
      color: var(--ink);
      transition: border-color 0.15s ease, box-shadow 0.15s ease;
      width: 100%;
    }

    .form-control:focus {
      border-color: var(--gold);
      outline: none;
      box-shadow: 0 0 0 3px rgba(223, 182, 80, 0.25);
    }

    select.form-control {
      appearance: none;
      background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234E5254' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
      background-repeat: no-repeat;
      background-position: right 12px center;
      background-size: 16px;
      padding-right: 36px;
    }

    textarea.form-control {
      resize: vertical;
      min-height: 85px;
    }

    .form-disclaimer {
      font-size: 0.78rem;
      color: var(--charcoal);
      line-height: 1.4;
      text-align: center;
      margin-top: 6px;
    }

    /* 11. DARK FOOTER */
    .site-footer {
      background-color: var(--ink);
      color: #E4E4E0;
      padding: 72px 0 32px 0;
      border-top: 1px solid #3E4246;
      margin-top: auto;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.3fr 0.9fr 0.9fr 0.9fr;
      gap: 48px;
      margin-bottom: 56px;
    }

    .footer-brand {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

    /* Logo is a PNG on white — keep it on a white plaque */
    .footer-logo-badge {
      display: inline-flex;
      align-items: center;
      background-color: #FFFFFF;
      padding: 12px 20px;
      border-radius: var(--radius-sm);
      width: fit-content;
    }

    .footer-logo {
      height: 52px;
      width: auto;
      display: block;
    }

    .footer-summary {
      font-size: 0.88rem;
      line-height: 1.6;
      color: #B4B7B9;
      max-width: 38ch;
    }

    .footer-col-title {
      font-family: var(--font-heading);
      font-size: 1rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 18px;
      letter-spacing: 0.02em;
    }

    .footer-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-link {
      font-size: 0.88rem;
      color: #B4B7B9;
      text-decoration: none;
      transition: color 0.15s ease;
    }

    .footer-link:hover {
      color: var(--gold);
    }

    .footer-info-item {
      font-size: 0.88rem;
      color: #B4B7B9;
      line-height: 1.5;
      margin-bottom: 12px;
    }

    .footer-info-item strong {
      color: #FFFFFF;
      display: block;
      margin-bottom: 2px;
      font-size: 0.84rem;
      font-family: var(--font-mono);
      text-transform: uppercase;
      letter-spacing: 0.05em;
    }

    .footer-bottom {
      border-top: 1px solid #3E4246;
      padding-top: 28px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      font-size: 0.82rem;
      color: #8E9295;
    }

    .footer-motto {
      font-family: var(--font-mono);
      font-size: 0.78rem;
      color: var(--gold);
      letter-spacing: 0.05em;
      text-transform: uppercase;
    }

    /* SCROLL ANIMATION (PROGRESSIVE ENHANCEMENT) */
    .js .reveal {
      opacity: 0;
      transform: translateY(20px);
      transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .js .reveal.is-visible {
      opacity: 1;
      transform: translateY(0);
    }

    @media (prefers-reduced-motion: reduce) {
      .js .reveal {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
      }
      .split-img, .card-img, .test-gallery-item img {
        transition: none !important;
      }
    }

    /* RESPONSIVE MEDIA QUERIES */
    @media (max-width: 1080px) {
      .split-block, .split-block.reverse {
        grid-template-columns: 1fr;
        gap: 32px;
      }

      .split-block.reverse .split-media {
        order: 0;
      }

      .split-block.reverse .split-content {
        order: 0;
      }

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

      .infra-tall-img {
        min-height: 380px;
        aspect-ratio: 16 / 9;
      }

      .cards-4up-grid {
        grid-template-columns: repeat(2, 1fr);
      }

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

      .test-gallery-item.wide-span {
        grid-column: span 2;
      }

      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 28px;
      }

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

      .cta-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }

      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
      }
    }

    @media (max-width: 768px) {
      .desktop-nav {
        display: none;
      }

      .mobile-menu-wrapper {
        display: block;
      }

      .section {
        padding: 64px 0;
      }

      .hero-section {
        padding: 72px 0 80px 0;
        min-height: auto;
      }

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

      .test-gallery-item.wide-span {
        grid-column: span 1;
      }

      .test-gallery-img-landscape {
        aspect-ratio: 16 / 10;
      }

      .cards-4up-grid {
        grid-template-columns: 1fr;
      }

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

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

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
    }

    @media (max-width: 480px) {
      .header-inner {
        height: 74px;
      }

      .header-logo {
        height: 44px;
      }

      .hero-actions {
        flex-direction: column;
        align-items: stretch;
      }

      .btn {
        width: 100%;
      }

      .rfq-form-card {
        padding: 24px 18px;
      }
    }

    /* ==========================================================================
       MULTI-PAGE NAVIGATION, DROPDOWN & PAGE EXTENSIONS (APPENDED)
       ========================================================================== */

    /* Active navigation state */
    .nav-link.is-active,
    .mobile-nav-link.is-active,
    .mobile-nav-sublink.is-active,
    .dropdown-link.is-active {
      color: var(--gold-deep);
      font-weight: 700;
    }

    .nav-link.is-active::after {
      content: "";
      position: absolute;
      bottom: -6px;
      left: 0;
      right: 0;
      height: 2px;
      background-color: var(--gold);
      border-radius: 1px;
    }

    /* Desktop dropdown menu */
    .nav-item-dropdown {
      position: relative;
      display: inline-flex;
      align-items: center;
    }

    .dropdown-toggle {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      cursor: pointer;
    }

    .dropdown-chevron {
      font-size: 0.7rem;
      transition: transform 0.2s ease;
      display: inline-block;
      line-height: 1;
      color: var(--charcoal);
    }

    .nav-item-dropdown:hover .dropdown-chevron,
    .nav-item-dropdown:focus-within .dropdown-chevron {
      transform: rotate(180deg);
      color: var(--gold-deep);
    }

    .dropdown-menu {
      position: absolute;
      top: calc(100% + 14px);
      left: 50%;
      transform: translateX(-50%) translateY(8px);
      min-width: 250px;
      background-color: var(--paper);
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      box-shadow: 0 16px 36px -4px rgba(43, 46, 49, 0.14);
      padding: 8px;
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 2px;
      opacity: 0;
      visibility: hidden;
      pointer-events: none;
      transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
      z-index: 1002;
    }

    .dropdown-menu::before {
      content: "";
      position: absolute;
      top: -16px;
      left: 0;
      right: 0;
      height: 16px;
    }

    .nav-item-dropdown:hover .dropdown-menu,
    .nav-item-dropdown:focus-within .dropdown-menu {
      opacity: 1;
      visibility: visible;
      pointer-events: auto;
      transform: translateX(-50%) translateY(0);
    }

    .dropdown-link {
      display: block;
      padding: 10px 14px;
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--ink);
      text-decoration: none;
      border-radius: var(--radius-sm);
      transition: background-color 0.15s ease, color 0.15s ease;
      white-space: nowrap;
    }

    .dropdown-link:hover,
    .dropdown-link:focus-visible {
      background-color: var(--paper-alt);
      color: var(--gold-deep);
    }

    .dropdown-link.is-active {
      background-color: var(--gold-tint);
      color: var(--gold-deep);
      font-weight: 600;
    }

    /* Mobile menu navigation hierarchy */
    .mobile-nav-group {
      display: flex;
      flex-direction: column;
      gap: 2px;
      padding: 6px 0;
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
      margin: 4px 0;
    }

    .mobile-nav-heading {
      font-family: var(--font-mono);
      font-size: 0.72rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: var(--gold-deep);
      padding: 4px 12px;
    }

    .mobile-nav-sublink {
      font-size: 0.92rem;
      font-weight: 500;
      color: var(--ink);
      text-decoration: none;
      padding: 8px 12px 8px 24px;
      border-radius: var(--radius-sm);
      transition: background-color 0.15s ease, color 0.15s ease;
      position: relative;
    }

    .mobile-nav-sublink::before {
      content: "↳";
      position: absolute;
      left: 10px;
      color: var(--charcoal);
      font-size: 0.85rem;
    }

    .mobile-nav-sublink:hover,
    .mobile-nav-sublink:focus-visible {
      background-color: var(--paper-alt);
      color: var(--gold-deep);
    }

    .mobile-nav-sublink.is-active {
      background-color: var(--gold-tint);
      color: var(--gold-deep);
      font-weight: 600;
    }

    /* Inner Page Hero Styles */
    .page-hero {
      position: relative;
      padding: 80px 0 88px 0;
      background-color: var(--paper-alt);
      border-bottom: 1px solid var(--line);
      overflow: hidden;
    }

    .page-hero-inner {
      position: relative;
      z-index: 2;
      max-width: 820px;
    }

    .page-hero-title {
      font-size: clamp(2rem, 3.8vw, 3rem);
      margin-bottom: 16px;
      color: var(--ink);
    }

    .page-hero-desc {
      font-size: 1.1rem;
      line-height: 1.6;
      color: var(--charcoal);
      margin-bottom: 24px;
    }

    .page-hero-bg {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      z-index: 1;
      opacity: 0.12;
      mix-blend-mode: luminosity;
      pointer-events: none;
    }

    .page-hero-bg img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    /* Page-specific components */
    .center-hero {
      text-align: center;
      max-width: 680px;
      margin: 0 auto;
      padding: 80px 20px;
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    .center-hero .eyebrow {
      justify-content: center;
    }

    .center-hero-title {
      font-size: clamp(1.8rem, 3.2vw, 2.4rem);
      margin-bottom: 16px;
      color: var(--ink);
    }

    .center-hero-desc {
      font-size: 1.05rem;
      line-height: 1.65;
      color: var(--charcoal);
      margin-bottom: 32px;
      max-width: 58ch;
    }

    .form-notice {
      background-color: var(--gold-tint);
      border: 1px solid #EDE2C7;
      border-radius: var(--radius-sm);
      padding: 12px 16px;
      font-size: 0.86rem;
      color: var(--ink);
      margin-bottom: 20px;
      display: flex;
      align-items: flex-start;
      gap: 10px;
    }

    .form-notice-icon {
      color: var(--gold-deep);
      font-weight: 700;
      flex-shrink: 0;
    }

    .contact-container {
      max-width: 720px;
      margin: 0 auto;
    }

    .infra-subgroup-title {
      font-size: 1.15rem;
      margin-top: 24px;
      margin-bottom: 12px;
      color: var(--ink);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .infra-subgroup-title::before {
      content: "";
      display: inline-block;
      width: 6px;
      height: 6px;
      background-color: var(--gold);
      border-radius: 50%;
    }


    /* ---- Build-to-Print page hero: dark split variant, deliberately
       unlike the light full-bleed hero on the landing page ---- */
    .btp-hero {
      background-color: var(--ink);
      border-bottom: 3px solid var(--gold);
      padding: 76px 0 80px 0;
      overflow: hidden;
    }

    .btp-hero-grid {
      display: grid;
      grid-template-columns: 1.05fr 0.95fr;
      gap: 56px;
      align-items: center;
    }

    .btp-hero .eyebrow {
      color: var(--gold);
    }

    .btp-hero-title {
      font-family: var(--font-heading);
      font-size: clamp(1.9rem, 3.4vw, 2.7rem);
      line-height: 1.18;
      color: var(--paper);
      margin-bottom: 18px;
    }

    .btp-hero-desc {
      font-size: 1.05rem;
      line-height: 1.65;
      color: #C9CCCE;
      margin-bottom: 0;
    }

    .btp-hero-media {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid rgba(223, 182, 80, 0.35);
    }

    .btp-hero-media img {
      display: block;
      width: 100%;
      aspect-ratio: 4 / 3;
      object-fit: cover;
    }

    .btp-hero-stamp {
      position: absolute;
      left: 0;
      bottom: 0;
      display: flex;
      gap: 18px;
      padding: 12px 18px;
      background-color: rgba(43, 46, 49, 0.88);
      border-top-right-radius: var(--radius-md);
      font-family: var(--font-mono);
      font-size: 0.72rem;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      color: var(--gold);
    }

    @media (max-width: 900px) {
      .btp-hero-grid {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .btp-hero-media {
        order: -1;
      }
    }