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

    :root {
      --navy:   #0a1628;
      --navy2:  #0f2044;
      --teal:   #00c2b8;
      --teal2:  #009e96;
      --white:  #f4f8fb;
      --gray:   #8a9bb5;
      --light:  #e8eff8;
      --card:   #111d35;
      --accent: #00e5d8;
    }

    html { scroll-behavior: smooth; }

    body {
      font-family: 'DM Sans', sans-serif;
      background: var(--navy);
      color: var(--white);
      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 5vw;
      height: 68px;
      background: rgba(10,22,40,0.85);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(0,194,184,0.12);
    }
    .nav-logo {
      font-family: 'Syne', sans-serif;
      font-weight: 800;
      font-size: 1.15rem;
      color: var(--accent);
      letter-spacing: 0.02em;
      text-decoration: none;
      display: flex; align-items: center; gap: 10px;
    }
    .nav-logo span { color: var(--white); }
    .nav-logo .dot { color: var(--teal); }
    nav ul {
      list-style: none;
      display: flex; gap: 2rem;
    }
    nav ul a {
      text-decoration: none;
      color: var(--gray);
      font-size: 0.875rem;
      font-weight: 500;
      letter-spacing: 0.04em;
      text-transform: uppercase;
      transition: color 0.2s;
    }
    nav ul a:hover { color: var(--accent); }
    .nav-hamburger { display: none; cursor: pointer; flex-direction: column; gap: 5px; }
    .nav-hamburger span { display: block; width: 24px; height: 2px; background: var(--white); border-radius: 2px; }

    .nav-logo-img {
      height: 65px;        /* fits inside 68px header */
      width: auto;
      display: block;
    }

    /* ── HERO ── */
    .hero {
      min-height: 100vh;
      display: flex; align-items: center;
      position: relative;
      overflow: visible;
      padding: 100px 5vw 60px;
    }
    .hero-bg {
      position: absolute; inset: 0;
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
    }
    .hero-grid {
      position: absolute; inset: 0;
      background-image:
        linear-gradient(rgba(0,194,184,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,194,184,0.04) 1px, transparent 1px);
      background-size: 60px 60px;
    }
    .hero-content { position: relative; max-width: 680px; }
    .hero-eyebrow {
      display: inline-flex; align-items: center; gap: 8px;
      font-size: 0.78rem; font-weight: 600; letter-spacing: 0.12em;
      text-transform: uppercase; color: var(--teal);
      background: rgba(0,194,184,0.1);
      border: 1px solid rgba(0,194,184,0.25);
      padding: 6px 14px; border-radius: 100px;
      margin-bottom: 1.5rem;
    }
    .hero-eyebrow::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--teal); }
    .hero h1 {
      font-family: 'Syne', sans-serif;
      font-size: clamp(2.4rem, 5vw, 4rem);
      font-weight: 800;
      line-height: 1.1;
      letter-spacing: -0.02em;
      margin-bottom: 1.5rem;
    }
    .hero h1 em { font-style: normal; color: var(--accent); }
    .hero-desc {
      font-size: 1.05rem;
      line-height: 1.7;
      color: #9ab0cc;
      max-width: 540px;
      margin-bottom: 2.5rem;
    }
    .hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
    .btn-primary {
      display: inline-flex; align-items: center; gap: 8px;
      background: var(--teal);
      color: var(--navy);
      font-family: 'Syne', sans-serif;
      font-weight: 700;
      font-size: 0.9rem;
      letter-spacing: 0.04em;
      padding: 14px 28px;
      border-radius: 8px;
      text-decoration: none;
      border: none; cursor: pointer;
      transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
      box-shadow: 0 0 28px rgba(0,194,184,0.30);
    }
    .btn-primary:hover { background: var(--accent); transform: translateY(-2px); box-shadow: 0 0 40px rgba(0,229,216,0.45); }
    .btn-outline {
      display: inline-flex; align-items: center; gap: 8px;
      background: transparent;
      color: var(--white);
      font-family: 'Syne', sans-serif;
      font-weight: 600;
      font-size: 0.9rem;
      letter-spacing: 0.04em;
      padding: 13px 28px;
      border-radius: 8px;
      text-decoration: none;
      border: 1px solid rgba(255,255,255,0.2);
      cursor: pointer;
      transition: border-color 0.2s, background 0.2s;
    }
    .btn-outline:hover { border-color: var(--teal); background: rgba(0,194,184,0.07); }

    /* hero floating badge */
    .hero-badge {
      position: absolute; right: 5vw; bottom: 18%;
      background: var(--card);
      border: 1px solid rgba(0,194,184,0.2);
      border-radius: 16px;
      padding: 20px 28px;
      display: none;
    }
    @media(min-width:1000px){ .hero-badge { display: block; } }
    .hero-badge-title { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--gray); margin-bottom: 6px; }
    .hero-badge-val { font-family: 'Syne', sans-serif; font-size: 2rem; font-weight: 800; color: var(--accent); }
    .hero-badge-sub { font-size: 0.8rem; color: var(--gray); margin-top: 2px; }

    /* ── SLIDES STRIP ── */
    .slides-strip {
      display: flex; overflow-x: auto; gap: 1.5rem;
      padding: 0 5vw 2rem;
      scrollbar-width: none;
    }
    .slides-strip::-webkit-scrollbar { display: none; }
    .slide-card {
      flex: 0 0 320px;
      background: var(--card);
      border: 1px solid rgba(0,194,184,0.1);
      border-radius: 16px;
      overflow: hidden;
      transition: transform 0.2s, border-color 0.2s;
    }
    .slide-card:hover { transform: translateY(-4px); border-color: rgba(0,194,184,0.35); }
    .slide-card-img {
      width: 100%; height: 180px; object-fit: cover;
      background: linear-gradient(135deg, #0f2044 0%, #0a3050 100%);
      display: flex; align-items: center; justify-content: center;
    }
    .slide-card-img svg { opacity: 0.3; }
    .slide-card-body { padding: 20px; }
    .slide-card-tag { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--teal); font-weight: 600; margin-bottom: 6px; }
    .slide-card-title { font-family: 'Syne', sans-serif; font-weight: 700; font-size: 1rem; margin-bottom: 8px; }
    .slide-card-desc { font-size: 0.875rem; color: var(--gray); line-height: 1.6; }

    /* ── SECTION HEADER ── */
    .section { padding: 90px 5vw; }
    .section-header { text-align: center; margin-bottom: 60px; }
    .section-tag {
      display: inline-block;
      font-size: 0.75rem; font-weight: 600; letter-spacing: 0.12em;
      text-transform: uppercase; color: var(--teal);
      margin-bottom: 12px;
    }
    .section-header h2 {
      font-family: 'Syne', sans-serif;
      font-size: clamp(1.8rem, 3.5vw, 2.8rem);
      font-weight: 800;
      letter-spacing: -0.02em;
    }

    /* ── SPECIALTIES GRID ── */
    .specialties-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
      gap: 1.25rem;
    }
    .specialty-card {
      background: var(--card);
      border: 1px solid rgba(255,255,255,0.06);
      border-radius: 14px;
      padding: 24px;
      display: flex; align-items: flex-start; gap: 16px;
      transition: border-color 0.2s, transform 0.2s;
    }
    .specialty-card:hover { border-color: rgba(0,194,184,0.3); transform: translateY(-3px); }
    .specialty-icon {
      width: 44px; height: 44px; border-radius: 10px;
      background: rgba(0,194,184,0.12);
      display: flex; align-items: center; justify-content: center;
      flex-shrink: 0;
      font-size: 1.25rem;
    }
    .specialty-card h3 {
      font-family: 'Syne', sans-serif;
      font-size: 1rem; font-weight: 700;
      margin-bottom: 6px;
    }
    .specialty-card p { font-size: 0.85rem; color: var(--gray); line-height: 1.6; }

    .about-inner {
      display: flex;
      align-items: center;
      gap: 40px;
    }

    .about-visual img {
      width: 100%;
      max-width: 450px;
      height: auto;
      border-radius: 12px;
      object-fit: cover;
      display: block;
    }

    .about-text {
      flex: 1;
    }

    /* Mobile fallback */
    @media (max-width: 768px) {
      .about-inner {
        flex-direction: column;
        text-align: center;
      }

      .about-visual img {
        max-width: 100%;
      }
    }

    /* ── FOOTER ── */
    footer {
      background: #060e1c;
      padding: 70px 5vw 30px;
      border-top: 1px solid rgba(255,255,255,0.05);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    @media(max-width:700px){ .footer-grid { grid-template-columns: 1fr; } }
    .footer-brand {
      font-family: 'Syne', sans-serif;
      font-size: 1.1rem; font-weight: 700;
      color: var(--accent);
      margin-bottom: 12px;
    }
    .footer-grid p { font-size: 0.875rem; color: var(--gray); line-height: 1.7; }
    .footer-heading { font-family: 'Syne', sans-serif; font-weight: 700; font-size: 0.95rem; margin-bottom: 16px; }
    .footer-links { list-style: none; }
    .footer-links li { margin-bottom: 10px; }
    .footer-links a {
      text-decoration: none; color: var(--gray); font-size: 0.875rem;
      display: flex; align-items: center; gap: 8px;
      transition: color 0.2s;
    }
    .footer-links a::before { content: '›'; color: var(--teal); font-size: 1rem; }
    .footer-links a:hover { color: var(--white); }
    .footer-contact { list-style: none; }
    .footer-contact li {
      display: flex; gap: 12px; align-items: flex-start;
      font-size: 0.875rem; color: var(--gray);
      margin-bottom: 12px; line-height: 1.5;
    }
    .footer-contact .icon { color: var(--teal); flex-shrink: 0; margin-top: 2px; }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.06);
      padding-top: 24px;
      text-align: center;
      font-size: 0.8rem; color: var(--gray);
    }

    /* ── RESPONSIVE NAV ── */
    @media(max-width:760px){
      nav ul { display: none; }
      .nav-hamburger { display: flex; }
      nav ul.open {
        display: flex; flex-direction: column; gap: 0;
        position: fixed; top: 68px; left: 0; right: 0;
        background: var(--navy2);
        padding: 1rem 5vw 1.5rem;
        border-bottom: 1px solid rgba(0,194,184,0.12);
      }
      nav ul.open li a { padding: 10px 0; display: block; }
    }

    /* ── ANIMATIONS ── */
    @keyframes fadeUp {
      from { opacity: 0; transform: translateY(24px); }
      to   { opacity: 1; transform: translateY(0); }
    }
    .hero-content > * {
      opacity: 0;
      animation: fadeUp 0.7s forwards;
    }
    .hero-content > *:nth-child(1) { animation-delay: 0.1s; }
    .hero-content > *:nth-child(2) { animation-delay: 0.25s; }
    .hero-content > *:nth-child(3) { animation-delay: 0.4s; }
    .hero-content > *:nth-child(4) { animation-delay: 0.55s; }

    .slider {
      position: absolute; inset: 0;
      width: 100%; height: 100%;
    }
    .slider-item {
      position: absolute; inset: 0;
      display: flex; flex-direction: column;
      opacity: 0; transition: opacity 1s ease;
      pointer-events: none;
    }
    .slider-item.active {
      opacity: 1; pointer-events: auto;
      position: relative;
    }
    .slide-image {
      width: 100%;
      height: 100vh;
      background-size: cover;
      background-position: center;
      flex-shrink: 0;
    }
    .slide-text {
      background: #0f2044;
      color: #1e3a5f;
      padding: 40px 5vw;
      flex: 1;
    }
    .slide-text h1 {
      font-family: 'Syne', sans-serif;
      font-size: clamp(1.6rem, 3vw, 2.4rem);
      font-weight: 800;
      color: #1e3a5f;
      margin-bottom: 1rem;
    }
    .slide-text .hero-eyebrow {
      color: var(--teal);
      background: rgba(0,194,184,0.08);
      border-color: rgba(0,194,184,0.2);
      margin-bottom: 1rem;
    }
    .slide-text .hero-desc {
      color: #2d3748;
      font-size: 1rem;
      margin-bottom: 1.5rem;
    }
    .slider-dots {
      position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
      display: flex; gap: 10px; z-index: 10;
    }
    .slider-dot {
      width: 10px; height: 10px; border-radius: 50%;
      background: rgba(255,255,255,0.4);
      border: none; cursor: pointer; padding: 0;
      transition: background 0.3s;
    }
    .slider-dot.active { background: var(--teal); }
    .privacy-section {
      padding: 120px 20px;
      background: #0a1628;
    }

    .privacy-section {
      padding: 100px 20px;
      background: #0a1628;
    }

    .privacy-container {
      max-width: 900px;
      margin: 0 auto;
      background: rgba(255, 255, 255, 0.02);
      border-radius: 16px;
      padding: 60px 50px;
    }

    .privacy-content {
      color: #c7d2e1;
      font-size: 16px;
      line-height: 1.8;
    }

    .privacy-content h3 {
      margin-top: 50px;
      color: #f4f8fb;
      font-size: 20px;
    }

    .privacy-content h4 {
      margin-top: 25px;
      color: #8a9bb5;
      font-size: 16px;
    }

    .privacy-content ul {
      margin-left: 30px; /* indent bullets */
      margin-top: 10px;
    }

    .privacy-content li {
      margin-bottom: 8px;
    }

    .privacy-effective {
      margin-bottom: 40px;
      color: #8a9bb5;
    }

    #advanced-volume-rendering {
    scroll-margin-top: 80px; /* adjust to your header height */
    }

    #longitudinal-analysis {
    scroll-margin-top: 80px; /* adjust to your header height */
    }