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

    :root {
      --navy:   #0F2D52;
      --blue:   #1A5F9C;
      --steel:  #2E7BC4;
      --sky:    #D6E8F7;
      --mist:   #EEF5FC;
      --body:   #1E1E2E;
      --mid:    #4A5568;
      --light:  #8FA8C0;
      --white:  #FFFFFF;
      --rule:   #B8D4EE;
      --serif:  'Inter', sans-serif;
      --sans:   'Inter', system-ui, sans-serif;
    }

    html { scroll-behavior: smooth; }

    body {
      font-family: var(--sans);
      background-color: #0A1628;
      background-image: url('./background.png');
      background-size: cover;
      background-position: center top;
      background-repeat: no-repeat;
      background-attachment: scroll;
      color: var(--body);
      font-size: 16px;
      line-height: 1.6;
      overflow-x: hidden;
    }

    /* ── NAV ─────────────────────────────────────────── */
    nav {
      position: fixed; top: 0; left: 0; right: 0;
      z-index: 100;
      display: flex; align-items: center; justify-content: space-between;
      padding: 0 3rem;
      height: 64px;
      background: rgba(10, 22, 40, 0.97);
      backdrop-filter: blur(8px);
      border-bottom: 1px solid rgba(184, 212, 238, 0.15);
    }

    .nav-logo {
      font-family: var(--serif);
      font-size: 1.4rem;
      color: var(--white);
      text-decoration: none;
      letter-spacing: 0.02em;
    }

    .nav-logo span { color: var(--sky); }

    .nav-links {
      display: flex; gap: 2.5rem;
      list-style: none;
    }

    .nav-links a {
      font-size: 0.82rem;
      font-weight: 500;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: rgba(255,255,255,0.7);
      text-decoration: none;
      transition: color 0.2s;
    }

    .nav-links a:hover { color: var(--sky); }

    /* ── HERO ─────────────────────────────────────────── */
    .hero {
      min-height: 100vh;
      display: flex; align-items: center;
      background: transparent;
      position: relative;
      overflow: hidden;
      padding: 8rem 3rem 5rem;
    }

    /* Gradient overlay on hero for text readability */
    .hero::before {
      content: '';
      position: absolute; inset: 0;
      background: linear-gradient(
        135deg,
        rgba(10, 22, 42, 0.55) 0%,
        rgba(15, 45, 82, 0.25) 50%,
        rgba(10, 22, 42, 0.65) 100%
      );
      pointer-events: none;
    }

    /* Remove the old background image pseudo-element */
    .hero::after {
      content: '';
      position: absolute; inset: 0;
      background: linear-gradient(
        135deg,
        rgba(10, 22, 42, 0.72) 0%,
        rgba(15, 45, 82, 0.45) 50%,
        rgba(10, 22, 42, 0.80) 100%
      );
      pointer-events: none;
    }

    .hero-inner {
      max-width: 1100px;
      margin: 0 auto;
      width: 100%;
      position: relative; z-index: 1;
    }

    .hero-eyebrow {
      font-size: 0.78rem;
      font-weight: 600;
      letter-spacing: 0.18em;
      text-transform: uppercase;
      color: var(--steel);
      margin-bottom: 1.5rem;
      opacity: 0;
      animation: fadeUp 0.6s ease forwards 0.2s;
    }

    .hero-title {
      font-family: var(--serif);
      font-size: clamp(3rem, 6vw, 5.5rem);
      color: var(--white);
      line-height: 1.05;
      margin-bottom: 1rem;
      opacity: 0;
      animation: fadeUp 0.7s ease forwards 0.35s;
    }

    .hero-title em {
      font-style: italic;
      color: var(--sky);
    }

    .hero-sub {
      font-size: clamp(1rem, 1.8vw, 1.25rem);
      color: rgba(255,255,255,0.55);
      max-width: 580px;
      margin-bottom: 3rem;
      font-weight: 300;
      line-height: 1.7;
      opacity: 0;
      animation: fadeUp 0.7s ease forwards 0.5s;
    }

    .hero-philosophy {
      border-left: 3px solid var(--steel);
      padding-left: 1.5rem;
      margin-bottom: 3.5rem;
      opacity: 0;
      animation: fadeUp 0.7s ease forwards 0.65s;
    }

    .hero-philosophy p {
      font-size: 0.95rem;
      color: rgba(255,255,255,0.7);
      line-height: 1.8;
      font-weight: 300;
    }

    .hero-philosophy p strong {
      color: rgba(255,255,255,0.85);
      font-weight: 400;
    }

    .hero-actions {
      display: flex; gap: 1rem; flex-wrap: wrap;
      opacity: 0;
      animation: fadeUp 0.7s ease forwards 0.8s;
    }

    .btn-primary {
      display: inline-flex; align-items: center; gap: 0.5rem;
      padding: 0.85rem 2rem;
      background: var(--steel);
      color: var(--white);
      text-decoration: none;
      font-size: 0.85rem;
      font-weight: 600;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      border: 2px solid var(--steel);
      transition: all 0.25s;
    }

    .btn-primary:hover {
      background: transparent;
      color: var(--sky);
      border-color: var(--sky);
    }

    .btn-ghost {
      display: inline-flex; align-items: center; gap: 0.5rem;
      padding: 0.85rem 2rem;
      background: transparent;
      color: rgba(255,255,255,0.65);
      text-decoration: none;
      font-size: 0.85rem;
      font-weight: 500;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      border: 2px solid rgba(255,255,255,0.2);
      transition: all 0.25s;
    }

    .btn-ghost:hover {
      border-color: var(--sky);
      color: var(--sky);
    }

    /* ── METRICS STRIP ────────────────────────────────── */
    .metrics {
      background: rgba(214, 232, 247, 0.12);
      border-top: 1px solid rgba(184, 212, 238, 0.2);
      border-bottom: 1px solid rgba(184, 212, 238, 0.2);
      padding: 2.5rem 3rem;
    }

    .metrics-inner {
      max-width: 1100px;
      margin: 0 auto;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 0;
    }

    .metric {
      padding: 0.5rem 2rem;
      border-right: 1px solid var(--rule);
      opacity: 0;
      animation: fadeIn 0.5s ease forwards;
    }

    .metric:first-child { padding-left: 0; }
    .metric:last-child { border-right: none; }

    .metric-value {
      font-family: var(--serif);
      font-size: 2.2rem;
      color: var(--white);
      line-height: 1;
      margin-bottom: 0.3rem;
    }

    .metric-label {
      font-size: 0.78rem;
      color: var(--sky);
      font-weight: 500;
      letter-spacing: 0.04em;
    }

    /* ── SECTIONS ─────────────────────────────────────── */
    section {
      padding: 6rem 3rem;
    }

    .section-inner {
      max-width: 1100px;
      margin: 0 auto;
    }

    .section-eyebrow {
      font-size: 0.72rem;
      font-weight: 700;
      letter-spacing: 0.18em;
      text-transform: uppercase;
      color: var(--steel);
      margin-bottom: 0.75rem;
    }

    .section-title {
      font-family: var(--serif);
      font-size: clamp(2rem, 3.5vw, 2.8rem);
      color: var(--white);
      line-height: 1.15;
      margin-bottom: 1.5rem;
    }

    .section-intro {
      font-size: 1.05rem;
      color: rgba(255,255,255,0.6);
      max-width: 620px;
      line-height: 1.75;
      font-weight: 300;
      margin-bottom: 3.5rem;
    }

    /* ── DOMAINS ──────────────────────────────────────── */
    #domains { background: transparent; }

    .domains-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.25rem;
      background: transparent;
      border: none;
    }

    .domain-card {
      background: rgba(255, 255, 255, 0.90);
      padding: 2.5rem;
      border-radius: 14px;
      border: 1px solid rgba(255, 255, 255, 0.25);
      box-shadow: 0 16px 48px rgba(0, 0, 0, 0.25);
      backdrop-filter: blur(6px);
      transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
    }

    .domain-card:hover {
      background: rgba(238, 245, 252, 0.96);
      transform: translateY(-3px);
      box-shadow: 0 24px 60px rgba(0, 0, 0, 0.32);
    }

    .domain-icon {
      width: 40px; height: 40px;
      margin-bottom: 1.25rem;
      color: var(--steel);
    }

    .domain-name {
      font-family: var(--serif);
      font-size: 1.35rem;
      color: var(--navy);
      margin-bottom: 0.75rem;
    }

    .domain-desc {
      font-size: 0.9rem;
      color: var(--mid);
      line-height: 1.7;
      font-weight: 300;
    }

    .domain-tags {
      margin-top: 1.25rem;
      display: flex; flex-wrap: wrap; gap: 0.4rem;
    }

    .tag {
      font-size: 0.7rem;
      font-weight: 600;
      letter-spacing: 0.07em;
      text-transform: uppercase;
      padding: 0.2rem 0.6rem;
      background: var(--sky);
      color: var(--blue);
    }

    /* ── APPROACH ─────────────────────────────────────── */
    #approach { background: rgba(15, 45, 82, 0.85); }

    #approach .section-title { color: var(--white); }
    #approach .section-intro { color: rgba(255,255,255,0.7); }
    #approach .section-eyebrow { color: var(--steel); }

    .approach-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }

    .approach-card {
      border-top: 3px solid var(--steel);
      padding-top: 1.5rem;
    }

    .approach-num {
      font-family: var(--serif);
      font-size: 3rem;
      color: rgba(46, 123, 196, 0.25);
      line-height: 1;
      margin-bottom: 0.75rem;
    }

    .approach-title {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--sky);
      letter-spacing: 0.06em;
      text-transform: uppercase;
      margin-bottom: 0.75rem;
    }

    .approach-desc {
      font-size: 0.88rem;
      color: rgba(255,255,255,0.45);
      line-height: 1.75;
      font-weight: 300;
    }

    /* ── PROOF ────────────────────────────────────────── */
    #proof { background: rgba(238, 245, 252, 0.08); }

    .proof-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
    }

    .proof-card {
      background: var(--white);
      border: 1px solid var(--rule);
      padding: 2rem;
      transition: border-color 0.25s, box-shadow 0.25s;
    }

    .proof-card:hover {
      border-color: var(--steel);
      box-shadow: 0 4px 24px rgba(15, 45, 82, 0.08);
    }

    .proof-industry {
      font-size: 0.7rem;
      font-weight: 700;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--steel);
      margin-bottom: 0.75rem;
    }

    .proof-headline {
      font-family: var(--serif);
      font-size: 1.15rem;
      color: var(--navy);
      line-height: 1.3;
      margin-bottom: 0.75rem;
    }

    .proof-result {
      font-size: 0.85rem;
      color: var(--mid);
      line-height: 1.65;
      font-weight: 300;
    }

    .proof-impact {
      margin-top: 1.25rem;
      padding-top: 1rem;
      border-top: 1px solid var(--rule);
      font-size: 0.78rem;
      font-weight: 600;
      color: var(--blue);
      letter-spacing: 0.04em;
    }

    .proof-more {
      margin-top: 3rem;
      text-align: center;
    }

    .btn-outline {
      display: inline-flex; align-items: center; gap: 0.5rem;
      padding: 0.85rem 2.5rem;
      background: transparent;
      color: var(--navy);
      text-decoration: none;
      font-size: 0.83rem;
      font-weight: 600;
      letter-spacing: 0.07em;
      text-transform: uppercase;
      border: 2px solid var(--navy);
      transition: all 0.25s;
    }

    .btn-outline:hover {
      background: var(--navy);
      color: var(--white);
    }

    /* ── ABOUT ────────────────────────────────────────── */
    #about { background: transparent; padding-bottom: 2rem; }

    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 6rem;
      align-items: start;
    }

    .about-text p {
      font-size: 0.95rem;
      color: rgba(255,255,255,0.65);
      line-height: 1.8;
      font-weight: 300;
      margin-bottom: 1.25rem;
    }

    .about-text p strong {
      color: var(--white);
      font-weight: 500;
    }

    .about-links {
      margin-top: 2.5rem;
      display: flex; flex-direction: column; gap: 0.6rem;
    }

    .about-link {
      display: flex; align-items: center; gap: 0.75rem;
      font-size: 0.85rem;
      color: var(--blue);
      text-decoration: none;
      font-weight: 500;
      transition: color 0.2s;
    }

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

    .about-link::before {
      content: '→';
      font-size: 0.8rem;
    }

    .about-patents {
      background: rgba(15, 45, 82, 0.7);
      border: 1px solid rgba(184, 212, 238, 0.2);
      padding: 2rem;
      backdrop-filter: blur(4px);
    }

    .patents-title {
      font-size: 0.72rem;
      font-weight: 700;
      letter-spacing: 0.15em;
      text-transform: uppercase;
      color: var(--steel);
      margin-bottom: 1.5rem;
    }

    .patent-item {
      padding: 1rem 0;
      border-bottom: 1px solid rgba(184, 212, 238, 0.15);
    }

    .patent-item:last-child { border-bottom: none; }

    .patent-name {
      font-weight: 600;
      font-size: 0.9rem;
      color: var(--sky);
      margin-bottom: 0.3rem;
    }

    .patent-desc {
      font-size: 0.82rem;
      color: rgba(255,255,255,0.7);
      line-height: 1.6;
      font-weight: 300;
    }

    /* ── CONTACT ──────────────────────────────────────── */
    #contact {
      background: rgba(15, 45, 82, 0.88);
      text-align: center;
      padding: 5rem 3rem 4rem;
    }

    #contact .section-eyebrow { color: var(--steel); }
    #contact .section-title { color: var(--white); margin-bottom: 1rem; }

    .contact-sub {
      font-size: 1rem;
      color: rgba(255,255,255,0.45);
      font-weight: 300;
      margin-bottom: 3rem;
      max-width: 480px;
      margin-left: auto; margin-right: auto;
    }

    .contact-email {
      display: inline-block;
      font-family: var(--serif);
      font-size: 1.5rem;
      color: var(--sky);
      text-decoration: none;
      border-bottom: 2px solid rgba(214, 232, 247, 0.3);
      padding-bottom: 0.25rem;
      transition: border-color 0.2s;
      margin-bottom: 3rem;
    }

    .contact-email:hover { border-color: var(--sky); }

    .contact-links {
      display: flex; justify-content: center; gap: 2rem; flex-wrap: wrap;
    }

    .contact-link {
      font-size: 0.78rem;
      font-weight: 600;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: rgba(255,255,255,0.4);
      text-decoration: none;
      transition: color 0.2s;
    }

    .contact-link:hover { color: var(--sky); }

    /* ── FOOTER ───────────────────────────────────────── */
    footer {
      background: #080F1A;
      padding: 1.5rem 3rem;
      display: flex; justify-content: space-between; align-items: center;
      border-top: 1px solid rgba(184, 212, 238, 0.08);
    }

    .footer-logo {
      font-family: var(--serif);
      font-size: 1rem;
      color: rgba(255,255,255,0.3);
    }

    .footer-copy {
      font-size: 0.75rem;
      color: rgba(255,255,255,0.2);
    }

    /* ── ANIMATIONS ───────────────────────────────────── */
    @keyframes fadeUp {
      from { opacity: 0; transform: translateY(18px); }
      to   { opacity: 1; transform: translateY(0); }
    }

    @keyframes fadeIn {
      from { opacity: 0; }
      to   { opacity: 1; }
    }

    .metric:nth-child(1) { animation-delay: 0.1s; }
    .metric:nth-child(2) { animation-delay: 0.2s; }
    .metric:nth-child(3) { animation-delay: 0.3s; }
    .metric:nth-child(4) { animation-delay: 0.4s; }

    /* Scroll reveal */
    .reveal {
      opacity: 0;
      transform: translateY(20px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }
    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }

    /* ── RESPONSIVE ───────────────────────────────────── */
    @media (max-width: 900px) {
      nav { padding: 0 1.5rem; }
      .nav-links { gap: 1.5rem; }
      section { padding: 4rem 1.5rem; }
      .hero { padding: 7rem 1.5rem 4rem; }
      .metrics { padding: 2rem 1.5rem; }
      .metrics-inner { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
      .metric { border-right: none; padding: 0; }
      .domains-grid { grid-template-columns: 1fr; }
      .approach-grid { grid-template-columns: 1fr; gap: 2rem; }
      .proof-grid { grid-template-columns: 1fr; }
      .about-grid { grid-template-columns: 1fr; gap: 3rem; }
      footer { flex-direction: column; gap: 0.5rem; text-align: center; }
    }

    @media (max-width: 600px) {
      .nav-links { display: none; }
      .hero-title { font-size: 2.5rem; }
      .metrics-inner { grid-template-columns: 1fr 1fr; }
    }