/* FLOATING WHATSAPP BUTTON */
    .float-wa {
      position: fixed;
      bottom: 24px;
      right: 24px;
      z-index: 99;
      background: var(--signal);
      color: var(--on-signal);
      font-family: var(--fm);
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      padding: 12px 18px;
      border-radius: 40px;
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
      border: 1.5px solid var(--ink);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: all 0.25s ease;
    }

    .float-wa:hover {
      transform: scale(1.05) translateY(-2px);
      box-shadow: 0 12px 30px rgba(164, 207, 0, 0.4);
    }

    .top-header {
      background: #ffffff;
      padding: 16px 0;
      border-bottom: 1px solid #eeeeee;
    }

    .top-header-inner {
      max-width: var(--max);
      margin: 0 auto;
      padding: 0 var(--margin);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      flex-wrap: wrap;
    }

    .top-brand {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .top-brand .logo img {
      height: 20px;
      width: auto;
      display: block;
    }

    .top-brand .strapline {
      font-family: var(--fh);
      font-size: 16px;
      font-weight: 600;
      letter-spacing: 0.08em;
      color: var(--ink-2);
      text-transform: uppercase;
      border-left: 2.5px solid var(--signal);
      padding-left: 14px;
      line-height: 1.2;
    }

    .top-contacts {
      display: flex;
      align-items: center;
      gap: 28px;
    }

    .contact-item {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .icon-circle {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--signal);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--on-signal);
      flex-shrink: 0;
      font-size: 15px;
    }

    .icon-circle svg {
      width: 18px;
      height: 18px;
      fill: none;
      stroke: currentColor;
      stroke-width: 2;
    }

    .contact-meta .lbl {
      font-size: 11px;
      color: var(--ink-2);
      font-weight: 500;
      line-height: 1.2;
    }

    .contact-meta .val {
      font-size: 14px;
      font-weight: 700;
      color: var(--ink);
      line-height: 1.3;
    }

    .top-wa-btn {
      background: var(--signal);
      color: var(--on-signal);
      font-family: var(--fm);
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      padding: 10px 18px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition:
        filter 0.2s,
        transform 0.2s;
    }

    .top-wa-btn:hover {
      filter: brightness(1.08);
      transform: translateY(-1px);
    }

/* mainNav */

nav.main-nav {
      position: sticky;
      top: 0;
      z-index: 50;
      background: #ffffff;
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
    }

    .nav-container {
      max-width: var(--max);
      margin: 0 auto;
      padding: 0 0 0 var(--margin);
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 56px;
    }

    .nav-items {
      display: flex;
      align-items: center;
      height: 100%;
    }

    .nav-item-wrapper {
      position: relative;
      height: 100%;
      display: flex;
      align-items: center;
    }

    .nav-item {
      font-family: var(--fh);
      font-size: 15px;
      letter-spacing: 0.04em;
      text-transform: uppercase;
      color: var(--ink);
      padding: 0 22px;
      height: 100%;
      display: flex;
      align-items: center;
      font-weight: 600;
      transition: all 0.2s;
      position: relative;
    }

    .nav-item.active {
      background: var(--signal);
      color: var(--on-signal);
      font-weight: 700;
    }

    .nav-item:not(.active):hover {
      background: var(--paper-2);
      color: var(--ink);
    }

    .nav-item .arrow {
      font-size: 9px;
      margin-left: 6px;
      transition: transform 0.25s ease;
      display: inline-block;
    }

    .nav-item-wrapper:hover .nav-item .arrow {
      transform: rotate(180deg);
    }

    .dropdown-menu {
      position: absolute;
      top: 100%;
      left: 0;
      min-width: 270px;
      background: var(--void-2);
      border: 1px solid var(--void-line);
      border-top: 3px solid var(--signal);
      box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
      opacity: 0;
      visibility: hidden;
      transform: translateY(10px);
      transition: all 0.22s cubic-bezier(0.2, 0.7, 0.2, 1);
      z-index: 100;
      padding: 8px 0;
    }

    .nav-item-wrapper:hover .dropdown-menu {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }

    .dropdown-link {
      display: block;
      padding: 10px 20px;
      font-family: var(--fb);
      font-size: 13px;
      font-weight: 500;
      color: #ffffff;
      transition: all 0.18s ease;
      border-left: 3px solid transparent;
    }

    .dropdown-link:hover,
    .dropdown-link.active {
      background: rgba(164, 207, 0, 0.15);
      color: var(--signal);
      border-left-color: var(--signal);
      padding-left: 24px;
    }

    /* HEADER SITE SEARCH */
    .nav-search-btn {
      background: none;
      border: none;
      border-left: 1px solid var(--line);
      cursor: pointer;
      height: 100%;
      padding: 0 20px;
      display: flex;
      align-items: center;
      gap: 8px;
      color: var(--ink);
      font-family: var(--fh);
      font-size: 13px;
      letter-spacing: 0.05em;
      text-transform: uppercase;
      font-weight: 600;
      transition: all 0.2s ease;
    }

    .nav-search-btn:hover {
      background: var(--paper-2);
      color: var(--signal);
    }

    .nav-search-btn svg {
      width: 17px;
      height: 17px;
      fill: none;
      stroke: currentColor;
      stroke-width: 2.2;
      stroke-linecap: round;
    }

    .search-overlay {
      position: fixed;
      inset: 0;
      background: rgba(17, 19, 18, 0.82);
      backdrop-filter: blur(4px);
      z-index: 2000;
      opacity: 0;
      visibility: hidden;
      transition: opacity 0.25s ease, visibility 0.25s ease;
      padding: 90px 20px 20px;
      overflow-y: auto;
    }

    .search-overlay.open {
      opacity: 1;
      visibility: visible;
    }

    .search-panel {
      max-width: 720px;
      margin: 0 auto;
      background: var(--paper);
      border-top: 4px solid var(--signal);
      box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
      transform: translateY(-14px);
      transition: transform 0.25s cubic-bezier(0.2, 0.7, 0.2, 1);
    }

    .search-overlay.open .search-panel {
      transform: translateY(0);
    }

    .search-field {
      display: flex;
      align-items: center;
      gap: 14px;
      padding: 20px 24px;
      border-bottom: 1px solid var(--line);
    }

    .search-field svg {
      width: 22px;
      height: 22px;
      fill: none;
      stroke: var(--signal);
      stroke-width: 2.2;
      stroke-linecap: round;
      flex-shrink: 0;
    }

    .search-field input {
      flex: 1;
      border: none;
      outline: none;
      background: none;
      font-family: var(--fh);
      font-size: 21px;
      font-weight: 600;
      color: var(--ink);
    }

    .search-field input::placeholder {
      color: var(--line-2);
      font-weight: 500;
    }

    .search-close {
      background: none;
      border: 1.5px solid var(--line);
      border-radius: 50%;
      width: 30px;
      height: 30px;
      cursor: pointer;
      color: var(--ink-2);
      font-size: 15px;
      line-height: 1;
      transition: all 0.2s ease;
      flex-shrink: 0;
    }

    .search-close:hover {
      border-color: var(--signal);
      color: var(--signal);
    }

    .search-results {
      max-height: 56vh;
      overflow-y: auto;
    }

    .search-hint,
    .search-empty {
      padding: 22px 24px;
      font-family: var(--fb);
      font-size: 13px;
      color: var(--ink-2);
    }

    .search-result {
      display: block;
      padding: 14px 24px;
      border-bottom: 1px solid var(--line);
      border-left: 3px solid transparent;
      transition: all 0.18s ease;
    }

    .search-result:hover,
    .search-result:focus-visible {
      background: var(--paper-2);
      border-left-color: var(--signal);
      outline: none;
    }

    .search-result .sr-section {
      font-family: var(--fh);
      font-size: 10px;
      letter-spacing: 0.14em;
      text-transform: uppercase;
      color: var(--signal);
      font-weight: 700;
      margin-bottom: 4px;
    }

    .search-result .sr-title {
      font-family: var(--fh);
      font-size: 15px;
      font-weight: 600;
      color: var(--ink);
      margin-bottom: 3px;
    }

    .search-result .sr-snippet {
      font-family: var(--fb);
      font-size: 12.5px;
      color: var(--ink-2);
      line-height: 1.5;
    }

    .search-result mark {
      background: rgba(164, 207, 0, 0.34);
      color: inherit;
      padding: 0 1px;
    }

    @media (max-width: 900px) {
      .nav-search-btn span {
        display: none;
      }

      .nav-search-btn {
        padding: 0 14px;
      }
    }

    /* REPLACED DOWNLOAD NOW WITH CONTACT US CTA */
    .nav-contact-cta {
      background: var(--void-2);
      color: #ffffff;
      height: 100%;
      padding: 0 26px;
      display: flex;
      align-items: center;
      gap: 10px;
      font-family: var(--fh);
      font-size: 15px;
      letter-spacing: 0.05em;
      text-transform: uppercase;
      font-weight: 700;
      transition: all 0.2s ease;
    }

    .nav-contact-cta:hover {
      background: var(--signal);
      color: var(--on-signal);
    }

    .nav-contact-cta:hover .contact-icon-circle {
      border-color: var(--on-signal);
      color: var(--on-signal);
    }

    .contact-icon-circle {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      border: 2px solid var(--signal);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--signal);
      font-weight: bold;
      font-size: 13px;
    }

    .burger {
      display: none;
      flex-direction: column;
      gap: 5.5px;
      cursor: pointer;
      padding: 8px;
      margin-right: var(--margin);
    }

    .burger span {
      width: 24px;
      height: 2px;
      background: var(--ink);
      transition:
        transform 0.25s,
        opacity 0.25s;
    }

/* footer */

footer {
      background: var(--void);
      color: var(--on-void);
      padding: 60px 0 36px;
      position: relative;
    }

    footer::before {
      content: "";
      position: absolute;
      inset: 0;
      background: repeating-linear-gradient(to bottom,
          transparent 0 3px,
          rgba(255, 255, 255, 0.012) 3px 4px);
      pointer-events: none;
    }

    .foot-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
      gap: 40px;
      margin-bottom: 50px;
      position: relative;
    }

    .foot-brand .logo {
      margin-bottom: 0;
      color: var(--on-void);
    }

    .foot-brand .top-brand {
      margin-bottom: 18px;
    }

    .foot-brand p {
      color: var(--on-void-2);
      font-size: 13.5px;
      max-width: 40ch;
      line-height: 1.65;
    }
    .foot-col {flex-direction: column;}

    .foot-col h5 {
      font-family: var(--fm);
      font-size: 11px;
      letter-spacing: 0.14em;
      text-transform: uppercase;
      color: var(--signal);
      margin-bottom: 18px;
    }

    .foot-col a {
      display: block;
      color: var(--on-void);
      font-size: 14px;
      margin-bottom: 10px;
      opacity: 0.75;
      transition: opacity 0.2s,
        color 0.2s;
      justify-content: center;
    }
    .foot-social-icons a {
      display: inline-flex;
      transition: opacity 0.2s ease,
        color 0.2s ease,
        transform 0.2s ease;
    }

    .foot-social-icons a:hover {
      transform: translateY(-2px);
    }

    .foot-col a:hover {
      opacity: 1;
      color: var(--signal);
    }

    /* PROMINENT SOCIAL ICONS IN FOOTER */
    .foot-social-icons {
      display: flex;
      gap: 12px;
      margin-top: 16px;
      flex-wrap: wrap;
    }

    .foot-social-btn {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--signal);
      color: var(--on-signal);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-family: var(--fm);
      font-size: 13px;
      font-weight: 700;
      transition: all 0.22s cubic-bezier(0.2, 0.7, 0.2, 1);
      border: 1.5px solid transparent;
    }

    .foot-social-btn svg {
      width: 20px;
      height: 20px;
      display: block;
      fill: currentColor;
    }

    .foot-social-btn:hover {
      transform: scale(1.12) translateY(-2px);
      background: #ffffff;
      color: var(--ink);
      box-shadow: 0 8px 20px rgba(164, 207, 0, 0.35);
    }

    .foot-bottom {
      border-top: 1px solid var(--void-line);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 20px;
      flex-wrap: wrap;
      position: relative;
    }

    .foot-bottom .mono {
      font-size: 11px;
      color: var(--on-void-2);
    }

    /* REVEAL & STAGGER ANIMATIONS */
    .reveal {
      opacity: 0;
      transform: translateY(22px);
      transition:
        opacity 0.7s cubic-bezier(0.2, 0.7, 0.2, 1),
        transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1);
    }

    .reveal.in {
      opacity: 1;
      transform: none;
    }

    .stagger>* {
      opacity: 0;
      transform: translateY(20px);
      transition:
        opacity 0.6s cubic-bezier(0.2, 0.7, 0.2, 1),
        transform 0.6s cubic-bezier(0.2, 0.7, 0.2, 1);
    }

    .stagger.in>* {
      opacity: 1;
      transform: none;
    }

    @media (max-width: 1024px) {
      :root {
        --margin: 32px;
      }

      .top-contacts {
        gap: 16px;
      }

      .about-grid,
      .og-grid,
      .uipm-grid,
      .contact-grid,
      .bundle-box {
        grid-template-columns: 1fr;
        gap: 30px;
      }

      .features,
      .aud,
      .news,
      .dl-grid {
        grid-template-columns: 1fr 1fr;
      }

      .services-grid,
      .optical-apps {
        grid-template-columns: 1fr 1fr;
      }

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

      .cat-tile.wide {
        grid-column: span 1;
        aspect-ratio: 16/10;
      }

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

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

      .bundle-price {
        border-left: none;
        border-top: 1px solid var(--line);
        padding-left: 0;
        padding-top: 20px;
        text-align: left;
      }
    }

    @media (max-width: 768px) {
      :root {
        --margin: 20px;
      }

      .top-header-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
      }

      .nav-container {
        padding-left: var(--margin);
      }

      .nav-items {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 56px;
        left: 0;
        right: 0;
        background: #ffffff;
        border-bottom: 2px solid var(--ink);
        padding: 16px var(--margin);
        gap: 8px;
        transform: translateY(-150%);
        transition: transform 0.35s cubic-bezier(0.2, 0.7, 0.2, 1);
        z-index: 49;
        box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
        height: auto;
      }

      .nav-items.active {
        transform: translateY(0);
      }

      .nav-item {
        height: 44px;
        padding: 0 12px;
        width: 100%;
      }

      .burger {
        display: flex;
      }

      .burger.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
      }

      .burger.active span:nth-child(2) {
        opacity: 0;
        transform: scaleX(0);
      }

      .burger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
      }

      .hero-title-sub {
        font-size: 30px;
      }

      .hero-title-main {
        font-size: 54px;
      }

      .features,
      .services-grid,
      .aud,
      .news,
      .dl-grid,
      .uipm-gallery,
      .optical-apps {
        grid-template-columns: 1fr;
      }

      .sec-head {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
      }

      .float-wa {
        bottom: 16px;
        right: 16px;
        padding: 10px 14px;
        font-size: 11px;
      }
    }