/* === VARIABLES & RESET === */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    :root {
      --navy:       #0D1B2A;
      --blue:       #5A6BFF;
      --periwinkle: #A3B1FF;
      --lavender:   #E7E9FF;
      --cream:      #F7F6F2;
      --white:      #FFFFFF;
      --text-dark:  #0D1B2A;
      --text-mid:   #4A5568;
      --text-light: #718096;
      --border:     rgba(13,27,42,0.09);
      --shadow-sm:  0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
      --shadow-md:  0 4px 24px rgba(0,0,0,0.08), 0 2px 8px rgba(0,0,0,0.04);
      --shadow-lg:  0 24px 64px rgba(0,0,0,0.14), 0 8px 24px rgba(0,0,0,0.06);
      --font-head:  'Space Grotesk', -apple-system, sans-serif;
      --font-body:  'Inter', -apple-system, sans-serif;
      --nav-h:      72px;
      --max-w:      1200px;
    }

    html { scroll-behavior: smooth; overflow-x: hidden; }

    body {
      background: var(--white);
      color: var(--text-dark);
      font-family: var(--font-body);
      font-size: 16px;
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      overflow-x: hidden;
      width: 100%;
    }

    img { max-width: 100%; height: auto; display: block; }
    a { color: inherit; text-decoration: none; }
    button { cursor: pointer; font-family: var(--font-body); }

    /* Gradient top bar � fixed, always visible */
    body::before {
      content: '';
      display: block;
      height: 3px;
      background: linear-gradient(90deg, #5A6BFF 0%, #A3B1FF 100%);
      position: fixed;
      top: 0; left: 0; right: 0;
      z-index: 2000;
    }

    /* === LAYOUT === */
    .container {
      max-width: var(--max-w);
      margin: 0 auto;
      padding: 0 48px;
    }

    section { padding: 100px 0; }
    .section-cream { background: var(--cream); }
    .section-white { background: var(--white); }

    .label {
      font-family: var(--font-head);
      font-size: 11px;
      font-weight: 600;
      letter-spacing: 2.5px;
      text-transform: uppercase;
      color: var(--blue);
      display: block;
      margin-bottom: 14px;
    }

    h1, h2, h3, h4 { font-family: var(--font-head); font-weight: 700; line-height: 1.12; }

    .section-headline {
      font-size: clamp(30px, 4vw, 46px);
      letter-spacing: -0.5px;
      color: var(--navy);
      margin-bottom: 16px;
    }

    .section-sub {
      font-size: 17px;
      color: var(--text-mid);
      line-height: 1.75;
      max-width: 620px;
    }

    .section-head { margin-bottom: 56px; }

    .reserve .section-sub { max-width: none; }

    /* === BUTTONS === */
    .btn {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 14px 28px;
      border-radius: 10px;
      font-size: 15px;
      font-weight: 600;
      transition: all 0.2s ease;
      border: none;
      white-space: nowrap;
      letter-spacing: -0.1px;
    }

    .btn-primary {
      background: var(--blue);
      color: var(--white);
      box-shadow: 0 4px 18px rgba(90,107,255,0.32);
    }
    .btn-primary:hover {
      background: #4A5BEF;
      box-shadow: 0 6px 28px rgba(90,107,255,0.42);
      transform: translateY(-1px);
    }

    .btn-secondary {
      background: transparent;
      color: var(--navy);
      border: 1.5px solid rgba(13,27,42,0.14);
    }
    .btn-secondary:hover {
      background: var(--cream);
      border-color: rgba(13,27,42,0.2);
    }

    .btn-disabled {
      background: #E2E8F0 !important;
      color: #A0AEC0 !important;
      cursor: not-allowed !important;
      pointer-events: none;
      box-shadow: none !important;
    }

    /* === NAVIGATION === */
    .nav {
      position: fixed;
      top: 3px;
      left: 0;
      right: 0;
      z-index: 1000;
      height: 72px;
      background: rgba(255,255,255,0.94);
      backdrop-filter: blur(24px);
      -webkit-backdrop-filter: blur(24px);
      border-bottom: 1px solid var(--border);
      transition: box-shadow 0.3s ease;
    }

    .nav.scrolled { box-shadow: 0 2px 24px rgba(0,0,0,0.07); }

    .nav-inner {
      max-width: var(--max-w);
      margin: 0 auto;
      padding: 0 48px;
      height: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 32px;
    }

    /*
      LOGO on light backgrounds (white nav, cream sections):
      Uses "Droplet Creamy" SVG icon (dark navy + blue on transparent) + HTML wordmark.
      Per brand rules: Creamy logos use dark colors, visible only on light surfaces.
    */
    .nav-logo {
      display: flex;
      align-items: center;
      gap: 11px;
      flex-shrink: 0;
      text-decoration: none;
    }

    .nav-logo-icon {
      height: 44px;
      width: auto;
    }

    .nav-logo-text {
      font-family: var(--font-head);
      font-size: 19px;
      font-weight: 700;
      letter-spacing: 4px;
      text-transform: uppercase;
      color: var(--navy);
      line-height: 1;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 4px;
      list-style: none;
      flex: 1;
      justify-content: center;
    }

    .nav-links a {
      font-size: 13.5px;
      font-weight: 500;
      color: var(--text-mid);
      padding: 8px 14px;
      border-radius: 8px;
      transition: all 0.15s;
      white-space: nowrap;
    }
    .nav-links a:hover { color: var(--navy); background: var(--cream); }

    /* Section links shown under the logo when the desktop nav no longer fits. */
    .nav-tabs {
      display: none;
    }

    .nav-cta { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
    .nav-cta .btn { padding: 10px 18px; font-size: 13.5px; }
    .nav-cta .btn:focus-visible,
    .mobile-nav a:focus-visible,
    .mobile-nav .btn:focus-visible {
      outline: 2px solid var(--blue);
      outline-offset: 2px;
    }

    /* Hamburger */
    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: none;
      border: none;
      padding: 4px;
    }
    .hamburger span {
      display: block;
      width: 22px;
      height: 2px;
      background: var(--navy);
      border-radius: 2px;
      transition: all 0.3s;
    }

    /* Mobile nav drawer */
    .mobile-nav {
      display: none;
      position: fixed;
      top: calc(var(--nav-h) + 3px);
      left: 0;
      right: 0;
      background: var(--white);
      border-bottom: 1px solid var(--border);
      padding: 16px 24px 28px;
      z-index: 999;
      box-shadow: 0 8px 32px rgba(0,0,0,0.1);
    }
    .mobile-nav.open {
      display: block;
      bottom: 0;
      overflow-y: auto;
    }
    .mobile-nav a {
      display: block;
      font-size: 16px;
      font-weight: 500;
      color: var(--text-mid);
      padding: 14px 0;
      border-bottom: 1px solid var(--border);
    }
    .mobile-nav a:last-of-type { border: none; }
    .mobile-nav a.btn,
    .mobile-nav a.btn:last-of-type {
      display: flex;
      align-items: center;
      justify-content: center;
      width: 100%;
      margin-top: 10px;
      padding: 14px 22px;
      border: none;
      border-radius: 10px;
      font-size: 15px;
      font-weight: 600;
      line-height: 1.2;
    }
    .mobile-nav a.btn-secondary,
    .mobile-nav a.btn-secondary:last-of-type {
      margin-top: 18px;
      background: var(--navy);
      color: #F7F6F2;
    }
    .mobile-nav a.btn-secondary:hover {
      background: #1a2d42;
      color: #F7F6F2;
    }
    .mobile-nav a.btn-primary,
    .mobile-nav a.btn-primary:last-of-type {
      background: var(--blue);
      color: var(--white);
      box-shadow: 0 4px 18px rgba(90,107,255,0.28);
    }
    .mobile-nav a.btn-primary:hover {
      background: #4A5BEF;
      color: var(--white);
    }

    /* === HERO === */
    .hero {
      min-height: 0;
      padding-top: calc(var(--nav-h) + 28px);
      background: var(--white);
      display: flex;
      align-items: flex-start;
    }

    .hero-inner {
      max-width: var(--max-w);
      margin: 0 auto;
      padding: 36px 48px 80px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
      width: 100%;
    }

    /* Prevent grid children from overflowing their cells */
    .hero-copy, .hero-visual { min-width: 0; width: 100%; }

    .hero h1 {
      font-size: clamp(38px, 4.8vw, 62px);
      letter-spacing: -2px;
      color: var(--navy);
      line-height: 1.04;
      margin-bottom: 24px;
    }

    .hero h1 em {
      font-style: normal;
      background: linear-gradient(135deg, #5A6BFF 0%, #A3B1FF 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .hero-sub {
      font-size: 17.5px;
      color: var(--text-mid);
      line-height: 1.75;
      margin-bottom: 14px;
      max-width: 500px;
    }

    .hero-support {
      font-size: 14.5px;
      color: var(--text-light);
      margin-bottom: 40px;
      max-width: 480px;
      line-height: 1.65;
    }

    .hero-ctas {
      display: flex;
      gap: 14px;
      flex-wrap: wrap;
      margin-bottom: 40px;
    }

    .trust-strip {
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
      padding-top: 24px;
      border-top: 1px solid var(--border);
    }

    .trust-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 12.5px;
      font-weight: 500;
      color: var(--text-light);
    }

    .trust-dot {
      width: 18px;
      height: 18px;
      border-radius: 50%;
      background: var(--lavender);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }
    .trust-dot svg { width: 9px; height: 9px; color: var(--blue); }

    /* === DASHBOARD WINDOW (browser chrome frame) === */
    .dashboard-window {
      border-radius: 18px;
      overflow: hidden;
      box-shadow: 0 40px 100px rgba(13,27,42,0.25), 0 10px 32px rgba(13,27,42,0.12);
      background: var(--navy);
      border: 1px solid rgba(255,255,255,0.05);
    }

    .browser-chrome {
      background: #162130;
      padding: 12px 16px;
      display: flex;
      align-items: center;
      gap: 12px;
      border-bottom: 1px solid rgba(255,255,255,0.06);
      flex-shrink: 0;
    }

    .browser-dots { display: flex; gap: 6px; }
    .browser-dots span { width: 10px; height: 10px; border-radius: 50%; }
    .browser-dots span:nth-child(1) { background: #FF5F57; }
    .browser-dots span:nth-child(2) { background: #FEBC2E; }
    .browser-dots span:nth-child(3) { background: #28C840; }

    .browser-url {
      flex: 1;
      background: rgba(255,255,255,0.06);
      border-radius: 6px;
      padding: 5px 12px;
      font-size: 11px;
      color: rgba(247,246,242,0.38);
      font-family: var(--font-body);
      letter-spacing: 0.2px;
    }

    /*
      HERO DASHBOARD PREVIEW
      === HOW TO SWAP WITH A SCREENSHOT ===
      Delete the <div class="dp-content"> block and replace with:
        <img src="screenshots/dashboard-hero.png" class="dp-screenshot-img" alt="Sample Milkprint Core results for Lucy Williams">
      CSS: .dp-screenshot-img { width: 100%; display: block; }
    */
    .dp-content {
      background: var(--navy);
      padding: 20px 22px 22px;
    }

    .dp-screenshot-img { width: 100%; display: block; }

    .dp-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-bottom: 14px;
      border-bottom: 1px solid rgba(255,255,255,0.07);
      margin-bottom: 14px;
    }

    .dp-logo-row { display: flex; align-items: center; gap: 10px; }

    .dp-brand {
      font-family: var(--font-head);
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 4.5px;
      text-transform: uppercase;
      color: #F7F6F2;
    }
    .dp-brand-sub {
      font-size: 8px;
      letter-spacing: 2.5px;
      text-transform: uppercase;
      color: var(--periwinkle);
      margin-top: 2px;
    }

    .dp-chip {
      background: rgba(90,107,255,0.12);
      border: 1px solid rgba(90,107,255,0.22);
      border-radius: 5px;
      padding: 3px 10px;
      font-size: 8.5px;
      letter-spacing: 0.8px;
      color: var(--periwinkle);
      white-space: nowrap;
    }

    .dp-patient {
      background: rgba(255,255,255,0.04);
      border: 1px solid rgba(255,255,255,0.07);
      border-radius: 10px;
      padding: 13px 16px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 0;
    }

    .dp-name { font-size: 17px; font-weight: 800; letter-spacing: -0.3px; color: #F7F6F2; }
    .dp-name-sub { font-size: 9.5px; color: rgba(247,246,242,0.5); margin-top: 3px; }

    .dp-stats { display: flex; gap: 18px; }
    .dp-stat-label {
      font-size: 7.5px; text-transform: uppercase; letter-spacing: 1px;
      color: rgba(247,246,242,0.35); margin-bottom: 2px;
    }
    .dp-stat-val { font-size: 15px; font-weight: 700; color: #F7F6F2; }

    .dp-tabs {
      background: rgba(255,255,255,0.03);
      border: 1px solid rgba(255,255,255,0.06);
      border-top: none;
      border-radius: 0 0 10px 10px;
      display: flex;
      padding: 0 12px;
      margin-bottom: 14px;
      overflow-x: auto;
    }

    .dp-tab {
      padding: 9px 10px 7px;
      font-size: 9.5px;
      font-weight: 600;
      color: rgba(247,246,242,0.32);
      border-bottom: 2px solid transparent;
      white-space: nowrap;
      letter-spacing: 0.2px;
    }
    .dp-tab.active { color: #F7F6F2; border-bottom-color: var(--blue); }

    .dp-cards {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 7px;
    }

    .dp-card {
      background: rgba(255,255,255,0.04);
      border: 1px solid rgba(255,255,255,0.07);
      border-radius: 8px;
      padding: 11px 12px;
    }

    .dp-card-label {
      font-size: 8.5px; font-weight: 600; text-transform: uppercase;
      letter-spacing: 0.4px; color: rgba(247,246,242,0.38); margin-bottom: 5px;
    }
    .dp-card-val {
      font-size: 21px; font-weight: 800; letter-spacing: -0.5px;
      line-height: 1; color: #F7F6F2;
    }
    .dp-card-unit { font-size: 8.5px; font-weight: 400; color: rgba(247,246,242,0.48); }

    .dp-badge {
      display: inline-flex; align-items: center;
      padding: 2px 6px; border-radius: 12px;
      font-size: 7.5px; font-weight: 700; letter-spacing: 0.5px;
      text-transform: uppercase; margin-top: 5px;
    }
    .dp-ok  { background: rgba(61,207,138,.1);  color: #3DCF8A; border: 1px solid rgba(61,207,138,.2); }
    .dp-lo  { background: rgba(245,166,35,.1);  color: #F5A623; border: 1px solid rgba(245,166,35,.2); }
    .dp-mod { background: rgba(245,166,35,.1);  color: #F5A623; border: 1px solid rgba(245,166,35,.2); }

    /* === DECODING PANEL (between hero and reserve) === */
    .decoding-panel {
      background: linear-gradient(135deg, var(--navy) 0%, #1a2d42 100%);
      padding: 80px 0;
    }

    .decoding-panel-inner {
      max-width: 840px;
      margin: 0 auto;
      padding: 0 48px;
    }

    .decoding-panel h2 {
      font-size: clamp(28px, 3.5vw, 44px);
      color: #F7F6F2;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .decoding-panel p {
      font-size: 17px;
      color: rgba(247,246,242,0.72);
      line-height: 1.8;
      max-width: 700px;
    }

    /* === RESERVE YOUR KIT === */
    .reserve { background: var(--cream); }

    .tiers {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 22px;
      margin-bottom: 40px;
      align-items: start;
    }

    .tier-card {
      background: var(--white);
      border: 1.5px solid var(--border);
      border-radius: 18px;
      overflow: hidden;
      position: relative;
      transition: box-shadow 0.25s ease, border-color 0.25s ease;
    }
    .tier-card:hover { box-shadow: var(--shadow-md); }

    /* Dynamic active ring: applied via JS to whichever tier is currently open */
    .tier-card.active-tier {
      border-color: var(--blue);
      box-shadow: 0 0 0 4px rgba(90,107,255,0.1), var(--shadow-md);
    }

    /* Header: always visible */
    .tier-header {
      padding: 30px 28px 20px;
      cursor: pointer;
      user-select: none;
      transition: background 0.15s;
    }
    .tier-header:hover { background: rgba(90,107,255,0.02); }

    .tier-name {
      font-family: var(--font-head);
      font-size: 20px; font-weight: 700; letter-spacing: 1.2px;
      text-transform: uppercase; color: var(--blue);
      margin-bottom: 10px;
    }

    .tier-price {
      font-family: var(--font-head);
      font-size: 44px; font-weight: 700; letter-spacing: -1.5px;
      color: var(--navy); line-height: 1;
      margin-bottom: 6px;
    }

    .tier-best-for {
      font-size: 13px; color: var(--text-light); margin-bottom: 14px; line-height: 1.5;
    }

    .tier-desc {
      font-size: 13.5px; color: var(--text-mid); line-height: 1.65;
      margin-bottom: 18px;
    }

    .tier-toggle {
      display: flex; align-items: center; justify-content: space-between;
      font-size: 12px; font-weight: 600; color: var(--blue);
    }

    .tier-toggle-icon {
      width: 22px; height: 22px; border-radius: 50%;
      background: var(--lavender);
      display: flex; align-items: center; justify-content: center;
      transition: transform 0.25s ease;
    }
    .tier-card.open .tier-toggle-icon { transform: rotate(180deg); }

    /* CTA section: always visible, sits below header */
    .tier-cta {
      padding: 4px 28px 24px;
    }

    .tier-cta .btn {
      width: 100%;
      justify-content: center;
    }

    .tier-note {
      font-size: 11.5px; color: var(--text-light);
      margin-top: 10px; text-align: center; line-height: 1.5;
    }

    /* Body: collapsible items list */
    .tier-body {
      display: none;
      padding: 0 28px 28px;
    }
    .tier-card.open .tier-body { display: block; }

    .tier-divider { height: 1px; background: var(--border); margin-bottom: 20px; }

    .tier-section-label {
      font-size: 10px; font-weight: 700; letter-spacing: 1.8px;
      text-transform: uppercase; color: var(--text-light);
      margin-bottom: 12px; margin-top: 16px;
    }
    .tier-section-label:first-child { margin-top: 0; }

    .tier-items { list-style: none; margin-bottom: 4px; }
    .tier-items li {
      display: flex; gap: 10px; align-items: flex-start;
      font-size: 13.5px; color: var(--text-mid);
      padding: 5px 0;
      border-bottom: 1px solid rgba(13,27,42,0.04);
    }
    .tier-items li:last-child { border: none; }
    .tier-items li.nested { padding-left: 22px; }
    .tier-items li.nested-2 { padding-left: 44px; }

    .tier-check {
      width: 16px; height: 16px; border-radius: 50%;
      background: var(--lavender);
      display: flex; align-items: center; justify-content: center;
      flex-shrink: 0; margin-top: 2px;
    }
    .tier-check svg { width: 8px; height: 8px; }

    /* Kit contents card */
    .kit-card {
      background: var(--white);
      border: 1.5px solid var(--border);
      border-radius: 18px;
      padding: 36px 40px;
      margin-bottom: 24px;
    }

    .kit-card-title {
      font-family: var(--font-head);
      font-size: 18px; font-weight: 700; color: var(--navy);
      margin-bottom: 22px;
    }

    .kit-items {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
      gap: 12px;
    }

    .kit-item {
      display: flex; align-items: center; gap: 10px;
      font-size: 14px; color: var(--text-mid);
    }

    .kit-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--blue); flex-shrink: 0; }

    .info-row {
      display: grid;
      grid-template-columns: 1fr;
      gap: 20px;
      margin-bottom: 24px;
    }

    .info-card {
      background: var(--white);
      border: 1.5px solid var(--border);
      border-radius: 14px;
      padding: 24px 28px;
    }

    .info-card-title {
      font-family: var(--font-head);
      font-size: 14px; font-weight: 700; color: var(--navy); margin-bottom: 8px;
    }
    .info-card p { font-size: 13.5px; color: var(--text-mid); line-height: 1.65; }

    .disclaimer-card {
      background: var(--lavender);
      border-radius: 14px;
      padding: 22px 28px;
    }
    .disclaimer-card p {
      font-size: 12.5px; color: #3A4A6B; line-height: 1.75;
    }

    /* === HOW IT WORKS === */
    /* Steps grid � no CSS content arrows (avoids encoding issues).
       Progression is communicated via numbered step labels. */
    .steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-bottom: 0;
      position: relative;
    }

    /* Thin connecting line behind the step icons */
    .steps::before {
      content: '';
      position: absolute;
      height: 1px;
      top: 72px;
      left: calc(12.5% + 8px);
      right: calc(12.5% + 8px);
      background: linear-gradient(90deg, transparent, var(--lavender) 15%, var(--periwinkle) 50%, var(--lavender) 85%, transparent);
      z-index: 0;
    }

    .step-card {
      padding: 32px 24px;
      border: 1.5px solid var(--border);
      border-radius: 18px;
      background: var(--white);
      position: relative;
      z-index: 1;
    }

    .step-num {
      font-family: var(--font-head);
      font-size: 11px; font-weight: 700; letter-spacing: 2px;
      color: var(--blue); margin-bottom: 18px;
    }

    .step-icon {
      width: 52px; height: 52px; border-radius: 14px;
      background: var(--lavender);
      display: flex; align-items: center; justify-content: center;
      margin-bottom: 20px;
    }
    .step-icon svg { width: 24px; height: 24px; color: var(--blue); }

    .step-title {
      font-family: var(--font-head);
      font-size: 17px; font-weight: 700; color: var(--navy); margin-bottom: 10px;
    }
    .step-desc { font-size: 14px; color: var(--text-mid); line-height: 1.65; }

    /* === EXPLORE SAMPLE RESULTS === */
    .explore-full {
      background: var(--navy);
      padding: 100px 0;
    }

    .explore-full-inner {
      max-width: var(--max-w);
      margin: 0 auto;
      padding: 0 48px;
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 72px;
      align-items: start;
    }

    .explore-full .label { color: var(--periwinkle); }
    .explore-full h1 { font-size: clamp(28px, 3.5vw, 44px); color: #F7F6F2; margin-bottom: 14px; }
    .explore-full .section-sub { color: rgba(247,246,242,0.68); max-width: 100%; }

    .explore-dash-wrap {
      border-radius: 18px;
      overflow: hidden;
      border: 1px solid rgba(255,255,255,0.09);
      box-shadow: 0 32px 80px rgba(0,0,0,0.45), 0 8px 24px rgba(0,0,0,0.25);
      background: var(--navy);
    }

    /*
      EXPLORE SECTION: SWAPPABLE IFRAME / SCREENSHOT
      To swap with a screenshot image:
        1. Remove the .explore-dash-frame div and iframe
        2. Add: <img src="screenshots/dashboard-full.png" class="explore-screenshot" alt="Milkprint Dashboard">
        3. CSS: .explore-screenshot { width: 100%; display: block; }
    */
    .explore-dash-frame {
      position: relative;
      height: 620px;
      overflow: hidden;
    }

    .explore-iframe {
      width: 160%;
      height: 160%;
      transform: scale(0.625);
      transform-origin: top left;
      border: none;
      background: #0D1B2A;
    }

    .biomarker-group { margin-bottom: 22px; }

    .bm-group-label {
      font-family: var(--font-head);
      font-size: 10.5px; font-weight: 700; letter-spacing: 2px;
      text-transform: uppercase; color: var(--periwinkle); margin-bottom: 10px;
    }

    .bm-list { list-style: none; }
    .bm-list li {
      display: flex; align-items: center; gap: 9px;
      font-size: 14px; color: rgba(247,246,242,0.72);
      padding: 6px 0;
      border-bottom: 1px solid rgba(255,255,255,0.05);
    }
    .bm-list li:last-child { border: none; }
    .bm-list li.nested { padding-left: 18px; }
    .bm-list li.nested-2 { padding-left: 36px; }

    .bm-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--blue); flex-shrink: 0; }

    .trends-callout {
      background: rgba(255,255,255,0.05);
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: 12px;
      padding: 20px 22px;
      margin-bottom: 28px;
    }
    .trends-callout-title {
      font-family: var(--font-head);
      font-size: 14px; font-weight: 600; color: #F7F6F2; margin-bottom: 8px;
    }
    .trends-callout p { font-size: 13.5px; color: rgba(247,246,242,0.6); line-height: 1.65; }

    .explore-disclaimer {
      font-size: 12px; color: rgba(247,246,242,0.38); line-height: 1.65; margin-top: 20px;
    }

    /* === TESTIMONIALS === */
    .testimonials { background: var(--white); }

    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
      margin-bottom: 18px;
    }

    .reviews-row2 {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
      max-width: 820px;
      margin: 0 auto;
    }

    .review-card {
      background: var(--cream);
      border-radius: 16px;
      padding: 28px;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }
    .review-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }

    /* Stars use HTML entities (&#9733;) in markup � renders universally */
    .review-stars {
      font-size: 15px;
      letter-spacing: 2px;
      color: var(--blue);
      margin-bottom: 14px;
    }
    .review-quote {
      font-size: 14.5px; color: var(--text-dark); line-height: 1.72;
      margin-bottom: 18px; font-style: italic;
    }
    .review-author { font-size: 12.5px; font-weight: 600; color: var(--text-light); }

    .testimonials-footnote {
      text-align: center;
      font-size: 12px;
      color: var(--text-light);
      margin-top: 28px;
    }

    /* === FAQs === */
    .faq { background: var(--cream); }

    .faq-inner {
      max-width: 800px;
      margin: 0 auto;
      padding: 0 48px;
    }

    .faq-list { display: flex; flex-direction: column; gap: 4px; }

    .faq-item {
      background: var(--white);
      border-radius: 12px;
      overflow: hidden;
    }

    .faq-question {
      display: flex; justify-content: space-between; align-items: center; gap: 20px;
      padding: 22px 26px;
      cursor: pointer; user-select: none;
      font-family: var(--font-head);
      font-size: 15.5px; font-weight: 600; color: var(--navy);
      transition: background 0.15s;
    }
    .faq-question:hover { background: rgba(90,107,255,0.03); }

    /* FAQ toggle: star icon (&#9733;) � renders universally as HTML entity */
    .faq-icon {
      width: 28px; height: 28px; border-radius: 50%;
      background: var(--lavender);
      display: flex; align-items: center; justify-content: center;
      flex-shrink: 0;
      font-size: 13px;
      color: var(--blue);
      transition: transform 0.25s ease, background 0.2s, color 0.2s;
      line-height: 1;
    }
    .faq-item.open .faq-icon {
      background: var(--blue);
      color: var(--white);
      transform: rotate(36deg);
    }

    .faq-answer {
      display: none;
      padding: 0 26px 22px;
      font-size: 15px; color: var(--text-mid); line-height: 1.78;
    }
    .faq-item.open .faq-answer { display: block; }

    /* === CONTACT === */
    .contact { background: var(--white); }

    .contact-inner {
      max-width: var(--max-w);
      margin: 0 auto;
      padding: 0 48px;
      display: grid;
      grid-template-columns: 1fr 1.4fr;
      gap: 80px;
      align-items: start;
    }

    .contact-left h1 {
      font-size: clamp(26px, 3.5vw, 38px);
      letter-spacing: -0.5px; color: var(--navy); margin-bottom: 16px;
    }
    .contact-left p {
      font-size: 16px; color: var(--text-mid); line-height: 1.72; margin-bottom: 24px;
    }
    .contact-email-link {
      display: inline-flex; align-items: center; gap: 8px;
      font-size: 14px; font-weight: 600; color: var(--blue); margin-bottom: 16px;
    }
    .contact-email-link:hover { text-decoration: underline; }
    .contact-note { font-size: 13px; color: var(--text-light); line-height: 1.65; max-width: 320px; }

    .contact-form-wrap {
      background: var(--cream);
      border-radius: 20px;
      padding: 40px;
    }

    .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .form-group { margin-bottom: 18px; }
    .form-label {
      display: block; font-size: 13px; font-weight: 600;
      color: var(--navy); margin-bottom: 8px;
    }

    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 16px;
      border: 1.5px solid var(--border);
      border-radius: 10px;
      font-family: var(--font-body);
      font-size: 15px; color: var(--navy);
      background: var(--white);
      transition: border-color 0.2s, box-shadow 0.2s;
      outline: none;
      -webkit-appearance: none;
    }

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      border-color: var(--blue);
      box-shadow: 0 0 0 3px rgba(90,107,255,0.1);
    }

    .form-select {
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%234A5568'%3E%3Cpath fill-rule='evenodd' d='M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z'/%3E%3C/svg%3E");
      background-repeat: no-repeat;
      background-position: right 14px center;
      background-size: 16px;
      padding-right: 44px;
      cursor: pointer;
    }

    .form-textarea { resize: vertical; min-height: 120px; }

    .form-submit .btn { width: 100%; justify-content: center; padding: 15px; font-size: 15px; }

    /* === FOOTER === */
    .footer {
      background: var(--navy);
      padding: 80px 0 48px;
      color: #F7F6F2;
    }

    .footer-inner {
      max-width: var(--max-w);
      margin: 0 auto;
      padding: 0 48px;
    }

    .footer-top {
      display: grid;
      grid-template-columns: 280px 1fr;
      gap: 80px;
      padding-bottom: 52px;
      border-bottom: 1px solid rgba(255,255,255,0.08);
      margin-bottom: 40px;
    }

    .footer-brand-col { display: flex; flex-direction: column; gap: 0; }

    /*
      Footer logo: Droplet Creamy SVG inverted to white via CSS filter.
      Per brand rules: filter brightness(0) invert(1) makes dark navy logo appear white on dark bg.
    */
    .footer-logo-stack {
      display: flex;
      flex-direction: column;
      align-items: center;
      margin-bottom: 4px;
    }

    .footer-logo-icon {
      height: 52px;
      width: auto;
      filter: brightness(0) invert(1);
      opacity: 0.88;
      margin-bottom: 12px;
    }

    .footer-wordmark {
      font-family: var(--font-head);
      font-size: 19px;
      font-weight: 700;
      letter-spacing: 4px;
      text-transform: uppercase;
      color: rgba(247,246,242,0.88);
      margin-bottom: 10px;
    }

    .footer-tagline {
      font-size: 14px;
      color: rgba(247,246,242,0.5);
      font-style: italic;
    }

    .footer-location {
      margin-top: 14px;
      font-size: 12px;
      color: rgba(247,246,242,0.42);
      letter-spacing: 0.2px;
    }

    .footer-links-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 40px;
    }

    .footer-links-col h4 {
      font-family: var(--font-head);
      font-size: 10px; font-weight: 700; letter-spacing: 2px;
      text-transform: uppercase; color: rgba(247,246,242,0.4);
      margin-bottom: 16px;
    }

    .footer-links-col a {
      display: block;
      font-size: 14px; color: rgba(247,246,242,0.65);
      padding: 5px 0; transition: color 0.15s;
    }
    .footer-links-col a:hover { color: #F7F6F2; }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      gap: 40px;
    }

    .footer-disclaimer {
      font-size: 12px; color: rgba(247,246,242,0.32); line-height: 1.8; max-width: 660px;
    }

    .footer-legal {
      display: flex; gap: 20px; flex-shrink: 0; padding-top: 4px;
    }

    .footer-legal a {
      font-size: 12px; color: rgba(247,246,242,0.38); transition: color 0.15s;
    }
    .footer-legal a:hover { color: rgba(247,246,242,0.7); }

    .footer-staff {
      margin-top: 28px;
      text-align: right;
    }
    .footer-staff a {
      font-size: 11px;
      color: rgba(247,246,242,0.18);
      letter-spacing: 0.04em;
    }
    .footer-staff a:hover { color: rgba(247,246,242,0.4); }

    /* === SCROLL ANIMATIONS === */
    .fade-up {
      opacity: 0;
      transform: translateY(28px);
      transition: opacity 0.65s ease, transform 0.65s ease;
    }
    .fade-up.in-view { opacity: 1; transform: translateY(0); }
    .fade-up.delay-1 { transition-delay: 0.1s; }
    .fade-up.delay-2 { transition-delay: 0.2s; }
    .fade-up.delay-3 { transition-delay: 0.3s; }
    .fade-up.delay-4 { transition-delay: 0.4s; }

    /* === RESPONSIVE === */
    @media (max-width: 1240px) {
      :root { --nav-h: 148px; }
      .nav { height: auto; }
      .nav-inner { height: 64px; }
      .nav-links { display: none; }
      .hamburger { display: flex; }
      .nav-tabs {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        padding: 0 16px 12px;
      }
      .nav-tabs a {
        font-size: 13px;
        font-weight: 600;
        color: var(--navy);
        background: var(--lavender);
        border-radius: 999px;
        padding: 8px 14px;
        line-height: 1.2;
        white-space: nowrap;
      }
      .nav-tabs a[aria-current="page"] {
        background: var(--navy);
        color: #F7F6F2;
      }
    }
    @media (max-width: 1100px) {
      .nav-cta { display: none; }
      .hamburger { display: flex; }
      .nav-inner { padding: 0 24px; }
      .tiers { grid-template-columns: 1fr; max-width: 600px; margin-left: auto; margin-right: auto; }
      .steps { grid-template-columns: repeat(2, 1fr); }
      .steps::before { display: none; }
      .explore-full-inner { grid-template-columns: 1fr; }
      .contact-inner { grid-template-columns: 1fr; gap: 52px; }
      .footer-top { grid-template-columns: 1fr; gap: 40px; }
    }

    @media (max-width: 768px) {
      section { padding: 72px 0; }
      .hero-inner { grid-template-columns: 1fr; gap: 28px; padding: 36px 24px 64px; align-items: center; }
      .hero h1 { font-size: 42px; letter-spacing: -1.5px; }
      .hero-sub { font-size: 16px; max-width: 100%; }
      .hero-support { max-width: 100%; }
      .trust-strip { gap: 14px; }
      .decoding-panel-inner { padding: 0 24px; }
      .container { padding: 0 24px; }
      .tiers { max-width: 100%; padding: 0 24px; }
      .steps { grid-template-columns: 1fr; }
      .steps::before { display: none; }
      .explore-full-inner { padding: 72px 24px; }
      .explore-dash-frame { height: 480px; }
      .reviews-grid { grid-template-columns: 1fr; }
      .reviews-row2 { grid-template-columns: 1fr; }
      .faq-inner { padding: 0 24px; }
      .contact-inner { padding: 0 24px; }
      .contact-form-wrap { padding: 28px 22px; }
      .form-row { grid-template-columns: 1fr; }
      .footer-inner { padding: 0 24px; }
      .footer-links-grid { grid-template-columns: 1fr 1fr; }
      .footer-bottom { flex-direction: column; gap: 24px; }
      .info-row { grid-template-columns: 1fr; }
      .kit-items { grid-template-columns: 1fr; }
      .dp-cards { grid-template-columns: repeat(2, 1fr); }
      .dp-stats { gap: 12px; }
    }

    /* === CONTACT FORM SUCCESS STATE === */
    .form-success {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      text-align: center;
      padding: 48px 32px;
      gap: 16px;
    }
    .form-success-icon {
      width: 56px; height: 56px; border-radius: 50%;
      background: rgba(61,207,138,0.12);
      border: 2px solid rgba(61,207,138,0.3);
      display: flex; align-items: center; justify-content: center;
      margin-bottom: 4px;
    }
    .form-success-icon svg { width: 24px; height: 24px; color: #3DCF8A; }
    .form-success h3 {
      font-family: var(--font-head);
      font-size: 20px; font-weight: 700; color: var(--navy);
    }
    .form-success p { font-size: 15px; color: var(--text-mid); line-height: 1.65; max-width: 320px; }

    @media (max-width: 480px) {
      .hero h1 { font-size: 34px; letter-spacing: -1px; }
      .hero-ctas { flex-direction: column; }
      .hero-ctas .btn { width: 100%; justify-content: center; }
      .tier-price { font-size: 36px; }
      .tier-header { padding: 24px 20px 16px; }
      .tier-cta { padding: 4px 20px 20px; }
      .tier-body { padding: 0 20px 20px; }
      .kit-card { padding: 28px 20px; }
      .info-card { padding: 20px; }
      .footer-links-grid { grid-template-columns: 1fr; }
      .faq-question { font-size: 14px; padding: 18px 20px; }
      .faq-answer { padding: 0 20px 18px; font-size: 14px; }
      .contact-form-wrap { padding: 24px 16px; }
      .trust-strip { flex-direction: column; gap: 10px; }
      .decoding-panel { padding: 60px 0; }
      .explore-dash-frame { height: 380px; }
    }
  
    /* === MULTI-PAGE === */
    /* Inner pages start under the fixed nav. Visible gap stays 100px. */
    .page-top {
      padding-top: calc(100px + var(--nav-h) + 3px);
    }

    #tier-core,
    #tier-advanced {
      scroll-margin-top: calc(var(--nav-h) + 19px);
    }

    .nav-links a[aria-current="page"] {
      color: var(--navy);
      background: var(--cream);
    }

    .mobile-nav a[aria-current="page"] {
      color: var(--navy);
      font-weight: 600;
    }

    .footer-links-col a[aria-current="page"] {
      color: #F7F6F2;
    }

    /* === ARTICLE === */
    .article-inner {
      max-width: 760px;
      margin: 0 auto;
      padding: 0 48px;
    }

    .article-inner h1 {
      font-size: clamp(32px, 4vw, 46px);
      letter-spacing: -0.5px;
      color: var(--navy);
      margin-bottom: 28px;
    }

    .article-inner h2 {
      font-size: clamp(24px, 3vw, 32px);
      color: var(--navy);
      margin: 40px 0 14px;
      letter-spacing: -0.4px;
    }

    .article-inner h3 {
      font-size: 20px;
      color: var(--navy);
      margin: 28px 0 10px;
    }

    .article-inner p {
      font-size: 17px;
      color: var(--text-mid);
      line-height: 1.75;
      margin-bottom: 16px;
    }

    .article-inner a {
      color: var(--blue);
      text-decoration: underline;
      text-underline-offset: 2px;
    }

    .article-inner a:hover { color: var(--navy); }

    .article-note {
      font-size: 14.5px;
      color: var(--text-light);
      font-style: italic;
      margin-top: 32px;
    }

    @media (max-width: 768px) {
      .article-inner { padding: 0 24px; }
    }