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

    :root {
      --navy:       #0b2444;
      --blue:       #0d3f7a;
      --blue-mid:   #1f5aa0;
      --blue-light: #2b6dbf;
      --sky:        #dbe6f2;
      --sky-mid:    #eef3f9;
      --steel:      #7ea1c4;
      --text:       #0b2444;
      --text-mid:   #2c4a6e;
      --text-dim:   #4a6282;
      --border:     rgba(0,0,0,0.09);
      --shadow-sm:  0 2px 12px rgba(0,0,0,0.07);
      --shadow-md:  0 6px 24px rgba(0,0,0,0.10);
      --shadow-lg:  0 16px 48px rgba(0,0,0,0.14);
      --radius:     4px;
      --radius-lg:  8px;
      --font-display: 'Barlow Condensed', sans-serif;
      --font-body:    'Barlow', sans-serif;
      --transition:   0.2s ease;
    }

    html { scroll-behavior: smooth; }
    body { font-family: var(--font-body); background: var(--sky); color: var(--text); font-size: 16px; line-height: 1.6; overflow-x: hidden; }
    img { display: block; max-width: 100%; }
    a { text-decoration: none; color: inherit; }
    ul { list-style: none; padding: 0; }
    .container { max-width: 1200px; margin: 0 auto; padding: 0 40px; }

    /* ── HEADER ── */
    .header { background: rgba(255,255,255,0.96); backdrop-filter: blur(6px); border-bottom: 1px solid var(--border); box-shadow: var(--shadow-sm); position: sticky; top: 0; z-index: 100; }
    .header-inner { display: flex; align-items: center; justify-content: space-between; height: 70px; }
    .header-logo img { height: 54px; width: auto; }
    nav { display: flex; align-items: center; gap: 4px; }
    nav a { font-size: 14px; font-weight: 600; color: var(--navy); padding: 8px 14px; border-radius: var(--radius); transition: background var(--transition), color var(--transition); }
    nav a:hover, nav a.active { background: var(--sky-mid); color: var(--blue-mid); }
    .btn-nav { background: var(--blue) !important; color: white !important; margin-left: 6px; padding: 9px 20px !important; border-radius: var(--radius); }
    .btn-nav:hover { background: var(--blue-mid) !important; }
    .hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
    .hamburger span { display: block; width: 22px; height: 2px; background: var(--navy); border-radius: 1px; }

    /* ── MOBILE NAV ── */
    .mobile-nav { display: none; position: fixed; top: 70px; left: 0; right: 0; bottom: 0; background: white; z-index: 99; padding: 24px 32px; flex-direction: column; overflow-y: auto; }
    .mobile-nav.open { display: flex; }
    .mobile-nav a { font-family: var(--font-display); font-size: 20px; font-weight: 700; text-transform: uppercase; color: var(--navy); padding: 14px 0; border-bottom: 1px solid var(--border); transition: color var(--transition); }
    .mobile-nav a:hover { color: var(--blue-mid); }

    /* ── PAGE HERO ── */
    .page-hero { background: var(--navy); border-bottom: 3px solid var(--blue-mid); padding: 52px 0 44px; }
    .breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 12px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--steel); margin-bottom: 14px; }
    .breadcrumb a { color: var(--steel); transition: color var(--transition); }
    .breadcrumb a:hover { color: white; }
    .breadcrumb span { color: rgba(255,255,255,0.3); }
    .page-hero h1 { font-family: var(--font-display); font-size: clamp(36px, 5vw, 60px); font-weight: 800; text-transform: uppercase; color: white; line-height: 1.0; }
    .page-hero h1 span { color: var(--steel); }
    .page-hero-sub { font-size: 15px; font-weight: 300; color: rgba(255,255,255,0.55); margin-top: 10px; line-height: 1.7; }

    /* ── GALLERY ── */
    .gallery-section { padding: 52px 0 80px; }

    .gallery-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 8px;
    }

    /* First item spans 2 cols and 2 rows as a hero image */
    .gallery-item { position: relative; overflow: hidden; border-radius: var(--radius); background: var(--sky-mid); cursor: pointer; }
    .gallery-item:first-child { grid-column: span 2; grid-row: span 2; }
    .gallery-item img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.4s ease, filter 0.4s ease;
      filter: brightness(0.88) saturate(0.85);
      min-height: 260px;
    }
    .gallery-item:first-child img { min-height: 528px; }
    .gallery-item:hover img { transform: scale(1.05); filter: brightness(1) saturate(1); }

    /* overlay */
    .gallery-overlay {
      position: absolute;
      inset: 0;
      background: rgba(11,36,68,0);
      display: flex;
      align-items: center;
      justify-content: center;
      transition: background 0.3s ease;
    }
    .gallery-overlay-icon {
      width: 48px; height: 48px;
      background: white;
      border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      opacity: 0;
      transform: scale(0.8);
      transition: opacity 0.3s ease, transform 0.3s ease;
    }
    .gallery-overlay-icon svg { width: 20px; height: 20px; stroke: var(--navy); fill: none; stroke-width: 2; stroke-linecap: round; }
    .gallery-item:hover .gallery-overlay { background: rgba(11,36,68,0.3); }
    .gallery-item:hover .gallery-overlay-icon { opacity: 1; transform: scale(1); }

    /* ── LIGHTBOX ── */
    .lightbox {
      position: fixed;
      inset: 0;
      z-index: 9999;
      display: none;
      align-items: center;
      justify-content: center;
    }
    .lightbox.active { display: flex; }
    .lightbox-overlay {
      position: absolute;
      inset: 0;
      background: rgba(5, 14, 30, 0.92);
      backdrop-filter: blur(6px);
    }
    .lightbox-content {
      position: relative;
      z-index: 1;
      display: flex;
      align-items: center;
      justify-content: center;
      width: 100%;
      height: 100%;
      padding: 40px;
    }
    .lightbox-img-wrap {
      position: relative;
      max-width: min(1000px, 90vw);
      max-height: 85vh;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: 0 32px 80px rgba(0,0,0,0.6);
    }
    .lightbox-img-wrap img {
      display: block;
      max-width: 100%;
      max-height: 85vh;
      width: auto;
      height: auto;
      object-fit: contain;
    }

    /* counter badge */
    .lightbox-counter {
      position: absolute;
      top: 16px; left: 50%;
      transform: translateX(-50%);
      font-family: var(--font-display);
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 0.1em;
      color: rgba(255,255,255,0.6);
      background: rgba(0,0,0,0.4);
      padding: 5px 14px;
      border-radius: 20px;
      z-index: 2;
    }

    /* close button */
    .lightbox-close {
      position: absolute;
      top: 16px; right: 20px;
      width: 40px; height: 40px;
      background: rgba(255,255,255,0.1);
      border: 1px solid rgba(255,255,255,0.2);
      border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      cursor: pointer;
      transition: background var(--transition);
      z-index: 2;
    }
    .lightbox-close:hover { background: rgba(255,255,255,0.2); }
    .lightbox-close svg { width: 16px; height: 16px; stroke: white; fill: none; stroke-width: 2; stroke-linecap: round; }

    /* prev / next arrows */
    .lightbox-prev,
    .lightbox-next {
      position: absolute;
      top: 50%; transform: translateY(-50%);
      width: 48px; height: 48px;
      background: rgba(255,255,255,0.1);
      border: 1px solid rgba(255,255,255,0.2);
      border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      cursor: pointer;
      transition: background var(--transition);
      z-index: 2;
    }
    .lightbox-prev { left: 20px; }
    .lightbox-next { right: 20px; }
    .lightbox-prev:hover,
    .lightbox-next:hover { background: rgba(255,255,255,0.2); }
    .lightbox-prev svg,
    .lightbox-next svg { width: 20px; height: 20px; stroke: white; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

    /* ── FOOTER ── */
    footer { background: var(--navy); border-top: 3px solid var(--blue-mid); padding: 56px 0 0; }
    .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 48px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08); }
    .footer-brand img { height: 50px; width: auto; margin-bottom: 16px; filter: brightness(0) invert(1); }
    .footer-brand p { font-size: 14px; color: rgba(255,255,255,0.4); line-height: 1.7; max-width: 260px; }
    .footer-col-title { font-size: 11px; font-weight: 700; letter-spacing: 0.2em; text-transform: uppercase; color: var(--steel); margin-bottom: 18px; }
    .footer-links li + li { margin-top: 10px; }
    .footer-links a { font-size: 14px; color: rgba(255,255,255,0.5); transition: color var(--transition); }
    .footer-links a:hover { color: white; }
    .footer-contact p { font-size: 14px; color: rgba(255,255,255,0.5); line-height: 1.9; }
    .footer-contact a { color: rgba(255,255,255,0.5); transition: color var(--transition); }
    .footer-contact a:hover { color: white; }
    .footer-cta-btn { display: inline-block; margin-top: 14px; background: var(--blue-mid); color: white; font-family: var(--font-display); font-size: 13px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; padding: 11px 22px; border-radius: var(--radius); transition: background var(--transition); }
    .footer-cta-btn:hover { background: var(--blue-light); }
    .footer-cta p { font-size: 14px; color: rgba(255,255,255,0.45); line-height: 1.7; }
    .footer-bottom { display: flex; justify-content: space-between; align-items: center; padding: 18px 0; flex-wrap: wrap; gap: 8px; }
    .footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.25); }

    /* ── BACK TO TOP ── */
    #back-top { position: fixed; bottom: 24px; right: 24px; width: 40px; height: 40px; background: var(--blue); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; opacity: 0; transition: opacity 0.3s, background 0.2s; z-index: 50; }
    #back-top:hover { background: var(--blue-mid); }
    #back-top svg { width: 16px; height: 16px; stroke: white; fill: none; stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; }

    /* ── RESPONSIVE ── */
    @media (max-width: 860px) {
      nav, .header-inner .btn-nav { display: none; }
      .hamburger { display: flex; }
      .gallery-grid { grid-template-columns: 1fr 1fr; }
      .gallery-item:first-child { grid-column: span 2; grid-row: span 1; }
      .gallery-item:first-child img { min-height: 260px; }
      .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
      .lightbox-prev { left: 8px; }
      .lightbox-next { right: 8px; }
    }
    @media (max-width: 560px) {
      .container { padding: 0 20px; }
      .gallery-grid { grid-template-columns: 1fr; gap: 6px; }
      .gallery-item:first-child { grid-column: span 1; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; align-items: flex-start; }
      .lightbox-content { padding: 16px; }
    }
