:root {
      --bg: #0b1220;
      --bg-2: #0f1a2e;
      --bg-3: #152338;
      --border: #1f2f4a;
      --text: #e8eaed;
      --text-muted: #8b95a5;
      --accent: #f59e0b;
      --accent-hover: #d97706;
      --red: #ef4444;
      --green: #10b981;
      --blue: #3b82f6;
      --max: 1200px;
    }

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

    html { scroll-behavior: smooth; }

    body {
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
      background: var(--bg);
      color: var(--text);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

    h1, h2, h3, h4 {
      font-family: 'Sora', 'Inter', sans-serif;
      font-weight: 700;
      letter-spacing: -0.02em;
      line-height: 1.15;
    }

    a { color: inherit; text-decoration: none; }
    img { max-width: 100%; display: block; }

    .container {
      max-width: var(--max);
      margin: 0 auto;
      padding: 0 24px;
    }

    /* ===== Header / Nav ===== */
    header.site {
      position: sticky; top: 0; z-index: 50;
      background: rgba(11, 18, 32, 0.85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border);
    }
    .nav {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 16px 0;
    }
    .brand {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand img { height: 44px; width: auto; display: block; }
    nav.primary {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    nav.primary a {
      color: var(--text-muted);
      font-size: 14px;
      font-weight: 500;
      transition: color .15s;
    }
    nav.primary a:hover { color: var(--text); }
    nav.primary a.cta {
      color: var(--bg);
      background: var(--accent);
      padding: 8px 18px;
      border-radius: 6px;
      font-weight: 600;
    }
    nav.primary a.cta:hover { background: var(--accent-hover); }
    .menu-toggle { display: none; }
    @media (max-width: 760px) {
      nav.primary a:not(.cta) { display: none; }
    }

    /* ===== Hero ===== */
    .hero {
      position: relative;
      overflow: hidden;
      padding: 90px 0 120px;
      background:
        radial-gradient(1200px 600px at 80% -10%, rgba(59,130,246,0.08), transparent 60%),
        radial-gradient(900px 500px at 10% 100%, rgba(245,158,11,0.06), transparent 60%),
        linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
    }
    .hero::before {
      content: '';
      position: absolute; inset: 0;
      background-image:
        linear-gradient(rgba(31, 47, 74, 0.25) 1px, transparent 1px),
        linear-gradient(90deg, rgba(31, 47, 74, 0.25) 1px, transparent 1px);
      background-size: 48px 48px;
      mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
      -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
      opacity: 0.4;
    }
    .hero .container {
      position: relative;
      display: grid;
      grid-template-columns: 1.3fr 1fr;
      gap: 64px;
      align-items: center;
    }
    @media (max-width: 900px) {
      .hero .container { grid-template-columns: 1fr; gap: 40px; }
      .hero { padding: 60px 0 80px; }
    }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 0.14em;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 20px;
    }
    .eyebrow::before {
      content: '';
      width: 32px; height: 1px;
      background: var(--accent);
    }
    h1.hero-title {
      font-size: clamp(36px, 5vw, 60px);
      line-height: 1.05;
      margin-bottom: 24px;
    }
    h1.hero-title em {
      font-style: normal;
      background: linear-gradient(135deg, var(--accent) 0%, #fbbf24 100%);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }
    p.hero-sub {
      font-size: 18px;
      color: var(--text-muted);
      max-width: 560px;
      margin-bottom: 32px;
    }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
    .btn {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 13px 22px;
      border-radius: 7px;
      font-size: 15px;
      font-weight: 600;
      transition: all .15s;
      cursor: pointer;
      border: none;
    }
    .btn-primary {
      background: var(--accent);
      color: var(--bg);
    }
    .btn-primary:hover { background: var(--accent-hover); }
    .btn-ghost {
      background: transparent;
      color: var(--text);
      border: 1px solid var(--border);
    }
    .btn-ghost:hover { border-color: var(--text-muted); background: var(--bg-3); }

    /* Hero illustration (tower SVG) */
    .hero-visual {
      position: relative;
      height: 460px;
      display: flex;
      align-items: flex-end;
      justify-content: center;
    }
    @media (max-width: 900px) {
      .hero-visual { height: 320px; }
    }
    .tower-svg {
      height: 100%;
      width: auto;
      filter: drop-shadow(0 10px 40px rgba(0,0,0,0.5));
    }
    /* Signal rings */
    .signal-ring {
      transform-origin: 50% 12%;
      animation: pulse 3s ease-out infinite;
    }
    .signal-ring.delay-1 { animation-delay: 1s; }
    .signal-ring.delay-2 { animation-delay: 2s; }
    @keyframes pulse {
      0%   { transform: scale(0.4); opacity: 0.8; }
      100% { transform: scale(1.4); opacity: 0; }
    }

    /* ===== Credibility strip ===== */
    .creds {
      background: var(--bg-2);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
      padding: 28px 0;
    }
    .creds .row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      align-items: center;
    }
    @media (max-width: 760px) { .creds .row { grid-template-columns: repeat(2, 1fr); gap: 20px; } }
    .stat {
      text-align: center;
      border-left: 1px solid var(--border);
      padding: 6px 0;
    }
    .stat:first-child { border-left: none; }
    @media (max-width: 760px) { .stat { border-left: none; } }
    .stat-num {
      font-family: 'Sora', sans-serif;
      font-size: 32px;
      font-weight: 700;
      color: var(--text);
    }
    .stat-num em { font-style: normal; color: var(--accent); }
    .stat-label {
      font-size: 11.5px;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: var(--text-muted);
      margin-top: 4px;
    }

    /* ===== Section base ===== */
    section.panel { padding: 100px 0; }
    @media (max-width: 760px) { section.panel { padding: 64px 0; } }

    .section-head { text-align: center; margin-bottom: 56px; }
    .section-head .eyebrow { display: inline-flex; margin-bottom: 14px; }
    .section-head h2 {
      font-size: clamp(28px, 3.5vw, 42px);
      margin-bottom: 14px;
    }
    .section-head p {
      color: var(--text-muted);
      max-width: 620px;
      margin: 0 auto;
      font-size: 17px;
    }

    /* ===== Services ===== */
    .services {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    @media (max-width: 1100px) { .services { grid-template-columns: repeat(2, 1fr); } }
    @media (max-width: 600px)  { .services { grid-template-columns: 1fr; } }
    .service-card {
      background: var(--bg-2);
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 32px 28px;
      transition: transform .2s, border-color .2s;
    }
    .service-card:hover {
      transform: translateY(-3px);
      border-color: var(--accent);
    }
    .service-card .icon {
      width: 44px; height: 44px;
      border-radius: 8px;
      background: linear-gradient(135deg, var(--bg-3) 0%, rgba(245,158,11,0.15) 100%);
      display: flex; align-items: center; justify-content: center;
      margin-bottom: 20px;
      color: var(--accent);
    }
    .service-card h3 {
      font-size: 20px;
      margin-bottom: 10px;
    }
    .service-card p {
      color: var(--text-muted);
      font-size: 14.5px;
      line-height: 1.65;
    }
    .service-card ul {
      list-style: none;
      margin-top: 14px;
    }
    .service-card li {
      font-size: 13.5px;
      color: var(--text-muted);
      padding-left: 18px;
      position: relative;
      padding-bottom: 6px;
    }
    .service-card li::before {
      content: '';
      position: absolute;
      left: 0; top: 9px;
      width: 8px; height: 1px;
      background: var(--accent);
    }

    /* ===== Featured work ===== */
    .featured {
      background: var(--bg-2);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }
    .featured-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }
    @media (max-width: 900px) { .featured-grid { grid-template-columns: 1fr; } }
    .featured-grid h2 { font-size: clamp(28px, 3.5vw, 38px); margin-bottom: 18px; }
    .featured-grid p { color: var(--text-muted); margin-bottom: 16px; }
    .kpis {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      margin-top: 28px;
      padding-top: 28px;
      border-top: 1px solid var(--border);
    }
    .kpi { }
    .kpi-num {
      font-family: 'Sora', sans-serif;
      font-size: 26px;
      font-weight: 700;
      color: var(--accent);
      line-height: 1;
    }
    .kpi-label {
      font-size: 12px;
      color: var(--text-muted);
      margin-top: 6px;
      line-height: 1.4;
    }
    .featured-image {
      aspect-ratio: 4/3;
      background:
        radial-gradient(ellipse at center, rgba(245,158,11,0.18) 0%, transparent 60%),
        var(--bg-3);
      border: 1px solid var(--border);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text-muted);
      font-size: 13px;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      padding: 24px;
      text-align: center;
    }

    /* ===== Contact ===== */
    .contact {
      text-align: center;
    }
    .contact h2 { font-size: clamp(30px, 3.8vw, 46px); margin-bottom: 16px; }
    .contact p.sub {
      color: var(--text-muted);
      font-size: 17px;
      max-width: 560px;
      margin: 0 auto 36px;
    }
    .contact-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
      margin-bottom: 36px;
    }
    @media (max-width: 760px) { .contact-grid { grid-template-columns: 1fr; } }
    .contact-card {
      background: var(--bg-2);
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 26px;
      text-align: left;
    }
    .contact-card .icon {
      width: 36px; height: 36px;
      color: var(--accent);
      margin-bottom: 14px;
    }
    .contact-card h4 {
      font-size: 12px;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: var(--text-muted);
      margin-bottom: 8px;
    }
    .contact-card a {
      font-size: 16px;
      color: var(--text);
      font-weight: 500;
    }
    .contact-card a:hover { color: var(--accent); }

    /* ===== Footer ===== */
    footer.site {
      background: var(--bg);
      border-top: 1px solid var(--border);
      padding: 40px 0 32px;
    }
    .footer-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
    }
    .footer-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      color: var(--text-muted);
      font-size: 13px;
    }
    .footer-brand img { height: 32px; }
    .footer-meta {
      font-size: 12.5px;
      color: var(--text-muted);
      letter-spacing: 0.02em;
    }
    .footer-meta span { color: var(--text); }

    /* Signal wave accent   subtle nod to logo colors */
    .accent-wave {
      height: 3px;
      background: linear-gradient(90deg, var(--red) 0%, var(--green) 50%, var(--blue) 100%);
      opacity: 0.8;
    }

    /* ===== Additional utilities (sub-pages) ===== */
    .panel-intro {
      padding: 80px 0 50px;
      background:
        radial-gradient(800px 400px at 20% 0%, rgba(245,158,11,0.07), transparent 60%),
        var(--bg);
      border-bottom: 1px solid var(--border);
    }
    @media (max-width: 760px) { .panel-intro { padding: 56px 0 40px; } }
    .page-title {
      font-size: clamp(32px, 4.5vw, 54px);
      margin-bottom: 18px;
      max-width: 820px;
    }
    .page-title em {
      font-style: normal;
      background: linear-gradient(135deg, var(--accent) 0%, #fbbf24 100%);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }
    .page-lede {
      font-size: 19px;
      color: var(--text-muted);
      max-width: 720px;
      line-height: 1.55;
    }

    /* Prose */
    .prose {
      max-width: 720px;
      color: var(--text-muted);
      font-size: 16.5px;
      line-height: 1.75;
    }
    .prose h2 {
      color: var(--text);
      font-size: 26px;
      margin-top: 44px;
      margin-bottom: 14px;
    }
    .prose h2:first-child { margin-top: 0; }
    .prose p + p { margin-top: 16px; }
    .prose strong { color: var(--text); font-weight: 600; }
    .prose ul { margin-top: 10px; padding-left: 20px; }
    .prose ul li { padding-bottom: 6px; }

    /* Two-col layout */
    .two-col {
      display: grid;
      grid-template-columns: 1.4fr 1fr;
      gap: 60px;
      align-items: start;
    }
    @media (max-width: 900px) { .two-col { grid-template-columns: 1fr; gap: 40px; } }

    /* Values grid (about page) */
    .values {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
      margin-top: 40px;
    }
    @media (max-width: 900px) { .values { grid-template-columns: 1fr; } }
    .value-card {
      background: var(--bg-2);
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 26px 24px;
    }
    .value-card h3 {
      font-size: 17px;
      margin-bottom: 10px;
      color: var(--text);
    }
    .value-card p {
      color: var(--text-muted);
      font-size: 14.5px;
      line-height: 1.65;
    }

    /* Service category heading (services page) */
    .cat-head {
      grid-column: 1 / -1;
      padding: 30px 0 6px;
      border-top: 1px solid var(--border);
      margin-top: 12px;
    }
    .cat-head:first-child { border-top: none; padding-top: 0; margin-top: 0; }
    .cat-head h3 {
      font-size: 13px;
      letter-spacing: 0.14em;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 6px;
    }
    .cat-head p {
      color: var(--text-muted);
      font-size: 14.5px;
      max-width: 640px;
    }

    /* Contact form */
    .form {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .form .full { grid-column: 1 / -1; }
    @media (max-width: 700px) { .form { grid-template-columns: 1fr; } }
    .form label {
      display: block;
      font-size: 11px;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: var(--text-muted);
      margin-bottom: 6px;
    }
    .form input, .form textarea, .form select {
      width: 100%;
      background: var(--bg-2);
      border: 1px solid var(--border);
      color: var(--text);
      border-radius: 7px;
      padding: 11px 14px;
      font-family: inherit;
      font-size: 15px;
      transition: border-color .15s;
    }
    .form input:focus, .form textarea:focus, .form select:focus {
      outline: none;
      border-color: var(--accent);
    }
    .form textarea { min-height: 140px; resize: vertical; }

    /* OE Supplies credit   hovers to OE brand orange */
    a.oe-credit {
      color: var(--text-muted);
      text-decoration: underline;
      text-decoration-color: var(--border);
      text-underline-offset: 3px;
      transition: color .2s ease, text-decoration-color .2s ease;
    }
    a.oe-credit:hover {
      color: #e35732;
      text-decoration-color: #e35732;
    }