:root {
    --navy:  #162a4d;
    --navy2: #0f1d35;
    --green: #22c55e;
    --green2:#16a34a;
    --medical-light: #f8fafc;
    --glass: rgba(255,255,255,.72);
    --glass-border: rgba(255,255,255,.45);
    --shadow-soft: 0 4px 32px -4px rgba(22,42,77,.08);
    --shadow-elevated: 0 16px 48px -8px rgba(22,42,77,.12);
    --shadow-glow-green: 0 0 40px -8px rgba(34,197,94,.25);
  }
  *,*::before,*::after { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    font-family: "Plus Jakarta Sans", sans-serif;
    background: #fafbfd;
    color: #1e293b;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }
  .serif { font-family: "Playfair Display", serif; }

  /* ── Scroll reveal ── */
  .reveal { opacity:0; transform:translateY(32px); transition:opacity .8s cubic-bezier(.22,1,.36,1), transform .8s cubic-bezier(.22,1,.36,1); }
  .reveal.active { opacity:1; transform:translateY(0); }
  .delay-100 { transition-delay:.12s; }
  .delay-200 { transition-delay:.22s; }
  .delay-300 { transition-delay:.32s; }

  /* ── Buttons ── */
  .btn-navy {
    background: linear-gradient(135deg, var(--navy) 0%, #1e3a6b 100%);
    color:#fff; transition:all .3s cubic-bezier(.22,1,.36,1);
    display:inline-flex; align-items:center; justify-content:center;
    position: relative; overflow: hidden;
  }
  .btn-navy::before {
    content:''; position:absolute; inset:0;
    background: linear-gradient(135deg, rgba(255,255,255,.12) 0%, transparent 60%);
    opacity: 0; transition: opacity .3s;
  }
  .btn-navy:hover::before { opacity: 1; }
  .btn-navy:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px -4px rgba(22,42,77,.3), 0 0 0 1px rgba(22,42,77,.08);
  }
  .btn-ghost {
    border: 1.5px solid rgba(22,42,77,.14); color:var(--navy);
    background: rgba(255,255,255,.6); backdrop-filter: blur(8px);
    transition:all .3s cubic-bezier(.22,1,.36,1);
    display:inline-flex; align-items:center; justify-content:center;
  }
  .btn-ghost:hover {
    border-color: var(--navy);
    background: rgba(22,42,77,.04);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px -4px rgba(22,42,77,.12);
  }

  /* ── Cards ── */
  .card {
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(22,42,77,.05);
    backdrop-filter: blur(12px);
  }

  /* ── Feature cards ── */
  .feat-card {
    transition: all .35s cubic-bezier(.22,1,.36,1);
    border: 1px solid rgba(22,42,77,.06);
    position: relative;
  }
  .feat-card::before {
    content: ''; position: absolute; inset: 0;
    border-radius: inherit;
    background: linear-gradient(135deg, rgba(34,197,94,.04) 0%, transparent 50%);
    opacity: 0; transition: opacity .35s;
  }
  .feat-card:hover::before { opacity: 1; }
  .feat-card:hover {
    border-color: rgba(34,197,94,.3);
    transform: translateY(-4px);
    box-shadow: 0 20px 48px -12px rgba(22,42,77,.12), var(--shadow-glow-green);
  }

  /* ── Pricing ── */
  .plan-featured { transform: scale(1.04); z-index: 10; }
  .plan-glow {
    box-shadow:
      0 0 0 1px rgba(34,197,94,.25),
      0 32px 72px -12px rgba(22,42,77,.4),
      0 0 60px -12px rgba(34,197,94,.15);
  }

  /* ── Animations ── */
  @keyframes pulse-dot { 0%,100%{opacity:1} 50%{opacity:.35} }
  .pulse-dot { animation:pulse-dot 2s ease-in-out infinite; }

  @keyframes ripple {
    0% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.45); }
    70% { box-shadow: 0 0 0 18px rgba(34, 197, 94, 0); }
    100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
  }
  .ripple { animation: ripple 2.2s infinite; }

  @keyframes float {
    0%,100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
  }
  .float-anim { animation: float 6s ease-in-out infinite; }

  @keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
  }

  .nav-link { position:relative; }
  .nav-link::after {
    content:""; position:absolute; left:50%; bottom:-2px;
    width:0; height:2px;
    background: linear-gradient(90deg, var(--green), #34d399);
    transition: width .3s cubic-bezier(.22,1,.36,1), left .3s cubic-bezier(.22,1,.36,1);
    border-radius: 2px;
  }
  .nav-link:hover::after { width:100%; left:0; }

  /* ── Page views ── */
  .page-view { transition: opacity 0.35s ease-in-out, transform 0.35s ease-in-out; }
  .page-view.hidden { display: none; opacity: 0; transform: translateY(10px); }

  /* ── FAQ ── */
  .faq-item { border-bottom: 1px solid rgba(22,42,77,.06); }
  .faq-item:last-child { border-bottom: none; }
  .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s cubic-bezier(.22,1,.36,1), padding 0.4s ease; padding: 0 0; }
  .faq-answer.open { max-height: 300px; padding: 0 0 24px 0; }
  .faq-chevron { transition: transform 0.35s cubic-bezier(.22,1,.36,1); }
  .faq-chevron.open { transform: rotate(180deg); }

  /* ── Comparison ── */
  .compare-check { color: var(--green); }
  .compare-no { color: #cbd5e1; }

  /* ── Mobile menu ── */
  .mobile-menu {
    transform: translateX(100%);
    transition: transform 0.35s cubic-bezier(.22,1,.36,1);
    backdrop-filter: blur(20px);
    background: rgba(255,255,255,.96);
  }
  .mobile-menu.open { transform: translateX(0); }
  .mobile-overlay {
    opacity: 0; pointer-events: none;
    transition: opacity 0.35s ease-in-out;
  }
  .mobile-overlay.open { opacity: 1; pointer-events: auto; }

  /* ── Success animation ── */
  @keyframes check-draw {
    0% { stroke-dashoffset: 100; }
    100% { stroke-dashoffset: 0; }
  }
  .check-animate {
    stroke-dasharray: 100;
    stroke-dashoffset: 100;
    animation: check-draw 0.8s ease forwards 0.3s;
  }
  @keyframes scale-in {
    0% { transform: scale(0); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
  }
  .scale-in { animation: scale-in 0.5s cubic-bezier(.22,1,.36,1) forwards; }

  /* ── Trial signup flow ── */
  .trial-step { display: none; }
  .trial-step.active { display: block; animation: fadeSlideIn 0.45s cubic-bezier(.22,1,.36,1) forwards; }
  @keyframes fadeSlideIn {
    0% { opacity: 0; transform: translateY(20px); }
    100% { opacity: 1; transform: translateY(0); }
  }
  .social-btn {
    transition: all 0.25s cubic-bezier(.22,1,.36,1);
    border: 1.5px solid rgba(22,42,77,.1);
    background: rgba(255,255,255,.8);
    backdrop-filter: blur(8px);
  }
  .social-btn:hover {
    border-color: rgba(22,42,77,.2);
    background: rgba(255,255,255,.95);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px -4px rgba(22,42,77,.1);
  }
  .otp-input {
    width: 48px; height: 56px;
    text-align: center; font-size: 24px; font-weight: 800;
    border: 2px solid rgba(22,42,77,.1);
    border-radius: 14px;
    outline: none;
    transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
    color: var(--navy);
    background: rgba(255,255,255,.8);
  }
  .otp-input:focus {
    border-color: var(--green);
    box-shadow: 0 0 0 4px rgba(34,197,94,.12);
    transform: translateY(-1px);
  }
  .otp-input.error {
    border-color: #ef4444;
    box-shadow: 0 0 0 4px rgba(239,68,68,.08);
  }
  .phone-input {
    border: 2px solid rgba(22,42,77,.1);
    border-radius: 14px;
    outline: none;
    transition: border-color 0.25s, box-shadow 0.25s;
    background: rgba(255,255,255,.8);
  }
  .phone-input:focus {
    border-color: var(--green);
    box-shadow: 0 0 0 4px rgba(34,197,94,.1);
  }
  @keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-6px); }
    40%, 80% { transform: translateX(6px); }
  }
  .shake { animation: shake 0.4s ease; }
  .timer-ring { transition: stroke-dashoffset 1s linear; }

  /* ── Decorative mesh gradient (used on sections) ── */
  .mesh-gradient {
    background:
      radial-gradient(ellipse 40% 50% at 20% 20%, rgba(34,197,94,.04) 0%, transparent 50%),
      radial-gradient(ellipse 50% 40% at 80% 80%, rgba(22,42,77,.03) 0%, transparent 50%),
      radial-gradient(ellipse 35% 45% at 60% 10%, rgba(56,189,248,.03) 0%, transparent 50%);
  }

  /* ── Section divider ── */
  .section-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(22,42,77,.06) 20%, rgba(22,42,77,.06) 80%, transparent);
  }

  /* ── Smooth gradient text ── */
  .text-gradient {
    background: linear-gradient(135deg, var(--navy) 0%, #2563eb 50%, var(--navy) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }

  /* ── Sticky CTA Mobile ── */
  .safe-area-bottom { padding-bottom: env(safe-area-inset-bottom, 8px); }
  #sticky-cta-mobile.visible { transform: translateY(0); }

  /* ── ROI Calculator ── */
  .roi-slider {
    -webkit-appearance: none; appearance: none;
    width: 100%; height: 6px;
    background: linear-gradient(90deg, var(--green) 0%, #e2e8f0 0%);
    border-radius: 999px; outline: none;
    transition: background .15s;
  }
  .roi-slider::-webkit-slider-thumb {
    -webkit-appearance: none; appearance: none;
    width: 24px; height: 24px;
    background: white;
    border: 3px solid var(--green);
    border-radius: 50%;
    cursor: grab;
    box-shadow: 0 2px 8px rgba(22,42,77,.15);
    transition: transform .15s, box-shadow .15s;
  }
  .roi-slider::-webkit-slider-thumb:hover {
    transform: scale(1.15);
    box-shadow: 0 4px 16px rgba(34,197,94,.3);
  }
  .roi-slider::-moz-range-thumb {
    width: 24px; height: 24px;
    background: white;
    border: 3px solid var(--green);
    border-radius: 50%;
    cursor: grab;
    box-shadow: 0 2px 8px rgba(22,42,77,.15);
  }
  .roi-result-card {
    background: linear-gradient(135deg, #f0fdf4 0%, #f0f9ff 100%);
    border: 1px solid rgba(34,197,94,.15);
    border-radius: 1.25rem;
    padding: 1.5rem;
    text-align: center;
    transition: transform .3s cubic-bezier(.22,1,.36,1), box-shadow .3s;
  }
  .roi-result-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px -4px rgba(34,197,94,.12);
  }
  @keyframes countUp {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .roi-animate { animation: countUp .4s cubic-bezier(.22,1,.36,1) forwards; }