:root {
      --navy-900: #0B1221;
      --navy-800: #0F1830;
      --navy-700: #16223F;
      --ink: #0B1221;
      --slate-700: #334155;
      --slate-600: #475569;
      --slate-500: #64748B;
      --slate-400: #94A3B8;
      --slate-200: #E2E8F0;
      --slate-100: #F1F5F9;
      --slate-50: #F8FAFC;
      --white: #FFFFFF;
      --accent: #2563EB;
      --accent-600: #1D4ED8;
      --accent-700: #1E40AF;
      --accent-soft: #EFF4FF;
      --radius: 14px;
      --radius-lg: 20px;
      --shadow-sm: 0 1px 2px rgba(11, 18, 33, 0.06), 0 1px 3px rgba(11, 18, 33, 0.08);
      --shadow-md: 0 4px 6px rgba(11, 18, 33, 0.05), 0 10px 24px rgba(11, 18, 33, 0.08);
      --shadow-lg: 0 12px 24px rgba(11, 18, 33, 0.10), 0 24px 48px rgba(11, 18, 33, 0.12);
      --container: 1140px;
      --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    }

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

    html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

    body {
      margin: 0;
      font-family: var(--font);
      color: var(--ink);
      background: var(--white);
      line-height: 1.6;
      font-size: 17px;
      -webkit-font-smoothing: antialiased;
      text-rendering: optimizeLegibility;
    }

    h1, h2, h3, h4 {
      margin: 0;
      line-height: 1.15;
      letter-spacing: -0.02em;
      font-weight: 700;
      color: var(--ink);
    }

    p { margin: 0; }
    a { color: inherit; text-decoration: none; }
    img, svg { display: block; max-width: 100%; }

    .container {
      width: 100%;
      max-width: var(--container);
      margin: 0 auto;
      padding: 0 24px;
    }

    .skip-link {
      position: absolute;
      left: -999px;
      top: 0;
      background: var(--accent);
      color: #fff;
      padding: 10px 16px;
      border-radius: 0 0 8px 0;
      z-index: 1000;
    }
    .skip-link:focus { left: 0; }

    /* ---------- Buttons ---------- */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-weight: 600;
      font-size: 15px;
      line-height: 1;
      padding: 13px 22px;
      border-radius: 10px;
      border: 1px solid transparent;
      cursor: pointer;
      transition: background-color .18s ease, border-color .18s ease, transform .18s ease, color .18s ease, box-shadow .18s ease;
      white-space: nowrap;
    }
    .btn:focus-visible { outline: 3px solid rgba(37, 99, 235, 0.4); outline-offset: 2px; }
    .btn-primary {
      background: var(--accent);
      color: #fff;
      box-shadow: 0 1px 2px rgba(30, 64, 175, 0.25);
    }
    .btn-primary:hover { background: var(--accent-600); transform: translateY(-1px); }
    .btn-secondary {
      background: rgba(255, 255, 255, 0.08);
      color: #fff;
      border-color: rgba(255, 255, 255, 0.18);
    }
    .btn-secondary:hover { background: rgba(255, 255, 255, 0.14); border-color: rgba(255, 255, 255, 0.3); }
    .btn-ghost {
      background: var(--white);
      color: var(--ink);
      border-color: var(--slate-200);
    }
    .btn-ghost:hover { border-color: var(--slate-400); box-shadow: var(--shadow-sm); }
    .btn-dark {
      background: var(--navy-900);
      color: #fff;
    }
    .btn-dark:hover { background: var(--navy-700); transform: translateY(-1px); }
    .btn-sm { padding: 10px 16px; font-size: 14px; }

    .icon-play {
      width: 18px; height: 18px;
      border-radius: 50%;
      background: var(--accent);
      display: inline-flex; align-items: center; justify-content: center;
      flex: 0 0 auto;
    }
    .icon-play svg { width: 9px; height: 9px; fill: #fff; }

    /* ---------- Header / Nav ---------- */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.82);
      backdrop-filter: saturate(180%) blur(12px);
      -webkit-backdrop-filter: saturate(180%) blur(12px);
      border-bottom: 1px solid var(--slate-200);
    }
    /* mobile menu hidden by default (desktop); shown only via .open on small screens */
    .mobile-menu { display: none; }
    .nav {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 68px;
    }
    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      font-size: 19px;
      letter-spacing: -0.03em;
      color: var(--ink);
    }
    .brand .mark {
      width: 30px; height: 30px;
      border-radius: 8px;
      background: linear-gradient(140deg, var(--accent), var(--accent-700));
      display: inline-flex; align-items: center; justify-content: center;
      color: #fff; font-weight: 800; font-size: 14px;
      box-shadow: var(--shadow-sm);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 26px;
      list-style: none;
      margin: 0; padding: 0;
    }
    .nav-links a {
      font-size: 15px;
      font-weight: 500;
      color: var(--slate-600);
      transition: color .15s ease;
    }
    .nav-links a:hover { color: var(--ink); }
    .nav-cta { display: flex; align-items: center; gap: 12px; }
    /* Defensive: nav CTA must never be intercepted by an overlay */
    .nav-cta, .nav-cta a, .mobile-menu, .mobile-menu a { position: relative; z-index: 101; pointer-events: auto; }
    .nav-toggle {
      display: none;
      background: none;
      border: 1px solid var(--slate-200);
      border-radius: 9px;
      width: 42px; height: 42px;
      cursor: pointer;
      align-items: center; justify-content: center;
    }
    .nav-toggle span {
      display: block; width: 18px; height: 2px; background: var(--ink);
      position: relative;
    }
    .nav-toggle span::before, .nav-toggle span::after {
      content: ""; position: absolute; left: 0; width: 18px; height: 2px; background: var(--ink);
    }
    .nav-toggle span::before { top: -6px; }
    .nav-toggle span::after { top: 6px; }

    /* ---------- Hero ---------- */
    .hero {
      position: relative;
      background: var(--navy-900);
      color: #fff;
      overflow: hidden;
    }
    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        radial-gradient(900px 500px at 78% -10%, rgba(37, 99, 235, 0.22), transparent 60%),
        radial-gradient(700px 400px at 0% 110%, rgba(37, 99, 235, 0.10), transparent 55%);
      pointer-events: none;
    }
    .hero .container {
      position: relative;
      padding-top: 92px;
      padding-bottom: 104px;
    }
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 0.02em;
      color: #C7D6FF;
      background: rgba(37, 99, 235, 0.12);
      border: 1px solid rgba(37, 99, 235, 0.30);
      padding: 7px 14px;
      border-radius: 999px;
      margin-bottom: 26px;
    }
    .badge .dot {
      width: 7px; height: 7px; border-radius: 50%;
      background: #5B8DEF;
      box-shadow: 0 0 0 4px rgba(91, 141, 239, 0.25);
    }
    .hero h1 {
      color: #fff;
      font-size: clamp(34px, 5.2vw, 58px);
      font-weight: 800;
      max-width: 16ch;
      margin-bottom: 22px;
    }
    .hero h1 .accent { color: #7FA8FF; }
    .hero .lede {
      color: #B7C2DA;
      font-size: clamp(17px, 2vw, 20px);
      max-width: 60ch;
      margin-bottom: 36px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 56px;
    }

    .hero-signin {
      margin: -34px 0 28px;
      font-size: 15px;
      color: rgba(255,255,255,0.72);
    }
    .hero-signin a {
      color: var(--accent, #7FA8FF);
      font-weight: 600;
      text-decoration: none;
      border-bottom: 1px solid rgba(127,168,255,0.4);
      padding-bottom: 1px;
    }
    .hero-signin a:hover { color: #fff; border-bottom-color: #fff; }
    .hero-stats {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 32px;
      max-width: 720px;
      border-top: 1px solid rgba(255, 255, 255, 0.10);
      padding-top: 34px;
    }
    .hero-stats .stat .num {
      font-size: 30px;
      font-weight: 800;
      color: #fff;
      letter-spacing: -0.02em;
    }
    .hero-stats .stat .lbl {
      font-size: 14px;
      color: #9FB0CE;
      margin-top: 4px;
    }

    /* ---------- Section primitives ---------- */
    section { scroll-margin-top: 84px; }
    .section { padding: 96px 0; }
    .section-alt { background: var(--slate-50); }
    .section-head { max-width: 720px; margin-bottom: 52px; }
    .eyebrow {
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 14px;
    }
    .section-head h2 {
      font-size: clamp(28px, 3.6vw, 40px);
      margin-bottom: 16px;
    }
    .section-head p {
      color: var(--slate-600);
      font-size: 18px;
    }
    .features-enhance-note {
      margin-top: 14px;
      font-size: 15px;
      font-style: italic;
      color: var(--accent);
    }

    /* ---------- Problem / Solution ---------- */
    .split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: start;
    }
    .prob-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 18px; }
    .prob-list li {
      display: flex;
      gap: 14px;
      padding: 18px 20px;
      background: var(--white);
      border: 1px solid var(--slate-200);
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
    }
    .prob-list .ic {
      flex: 0 0 auto;
      width: 36px; height: 36px;
      border-radius: 9px;
      background: #FEECEC;
      color: #C0392B;
      display: inline-flex; align-items: center; justify-content: center;
    }
    .prob-list .ic svg { width: 18px; height: 18px; }
    .prob-list h4 { font-size: 16px; margin-bottom: 3px; }
    .prob-list p { font-size: 14.5px; color: var(--slate-600); }
    .solution-card {
      background: var(--navy-900);
      color: #fff;
      border-radius: var(--radius-lg);
      padding: 36px 34px;
      box-shadow: var(--shadow-lg);
    }
    .solution-card h3 { color: #fff; font-size: 22px; margin-bottom: 14px; }
    .solution-card p { color: #B7C2DA; margin-bottom: 22px; }
    .solution-card ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
    .solution-card li { display: flex; gap: 12px; align-items: flex-start; color: #D7DEEC; font-size: 15.5px; }
    .solution-card li svg { width: 20px; height: 20px; flex: 0 0 auto; color: #7FA8FF; margin-top: 2px; }

    /* ---------- Agents ---------- */
    .agents-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 22px;
    }
    .agent-card {
      background: var(--white);
      border: 1px solid var(--slate-200);
      border-radius: var(--radius-lg);
      padding: 28px 24px;
      box-shadow: var(--shadow-sm);
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }
    .agent-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--slate-400); }
    .agent-card .avatar {
      width: 54px; height: 54px;
      border-radius: 14px;
      display: inline-flex; align-items: center; justify-content: center;
      font-weight: 800; font-size: 22px; color: #fff;
      margin-bottom: 18px;
      box-shadow: var(--shadow-sm);
    }
    .a-mike { background: linear-gradient(140deg, #2563EB, #1E40AF); }
    .a-molly { background: linear-gradient(140deg, #0EA5A4, #0B7C7B); }
    .a-chet  { background: linear-gradient(140deg, #7C3AED, #5B21B6); }
    .a-carol { background: linear-gradient(140deg, #2563EB, #1E40AF); }
    .agent-card .role {
      font-size: 12.5px; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase;
      color: var(--accent); margin-bottom: 6px;
    }
    .agent-card h3 { font-size: 21px; margin-bottom: 10px; }
    .agent-card p { font-size: 14.5px; color: var(--slate-600); }

    /* ---------- Features ---------- */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }
    .feature {
      background: var(--white);
      border: 1px solid var(--slate-200);
      border-radius: var(--radius);
      padding: 28px 26px;
      transition: box-shadow .2s ease, transform .2s ease;
    }
    .feature:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
    .feature .ic {
      width: 34px; height: 34px;
      border-radius: 9px;
      background: var(--accent-soft);
      color: var(--accent-600);
      display: inline-flex; align-items: center; justify-content: center;
      margin-bottom: 16px;
    }
    .feature .ic svg { width: 18px; height: 18px; }

    /* ---------- Pricing cards (fix: size the checkmark SVGs) ---------- */
    .pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 32px; }
    .price-card { background: #fff; border: 1px solid var(--slate-200, #e2e8f0); border-radius: 16px; padding: 28px 24px; display: flex; flex-direction: column; }
    .price-card.featured { border-color: var(--blue-500, #3B6CF6); box-shadow: 0 12px 30px rgba(59,108,246,0.18); }
    .price-card .tier { font-size: 13px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: var(--blue-600, #2f5fe0); margin-bottom: 6px; }
    .price-card h3 { font-size: 20px; margin-bottom: 4px; }
    .price-card .desc { font-size: 14px; color: var(--slate-600, #475569); margin-bottom: 16px; }
    .price-card ul { list-style: none; padding: 0; margin: 0 0 20px; display: flex; flex-direction: column; gap: 10px; }
    .price-card li { display: flex; align-items: flex-start; gap: 10px; font-size: 14.5px; color: var(--slate-700, #334155); line-height: 1.4; }
    .price-card li svg { width: 20px !important; height: 20px !important; flex: 0 0 auto; color: var(--blue-500, #3B6CF6); margin-top: 1px; stroke-width: 2.4; }
    .price-card .btn { margin-top: auto; text-align: center; }
    .feature h3 { font-size: 18px; margin-bottom: 8px; }
    .feature p { font-size: 14.5px; color: var(--slate-600); }

    /* ---------- How it works ---------- */
    .steps {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
      counter-reset: step;
    }
    .step {
      position: relative;
      padding-top: 8px;
    }
    .step .num {
      width: 40px; height: 40px;
      border-radius: 50%;
      background: var(--navy-900);
      color: #fff;
      font-weight: 700;
      display: inline-flex; align-items: center; justify-content: center;
      margin-bottom: 18px;
      font-size: 16px;
    }
    .step h3 { font-size: 19px; margin-bottom: 8px; }
    .step p { font-size: 15px; color: var(--slate-600); }
    .step::after {
      content: "";
      position: absolute;
      top: 28px; left: 52px; right: -15px;
      height: 1px;
      background: var(--slate-200);
    }
    .steps .step:last-child::after { display: none; }

  
    /* ---------- Voice demo (VAPI) ---------- */
    .hero-call-status, .agent-call-status {
      display: block; font-size: 13px; margin-top: 10px; min-height: 18px;
      color: var(--white); opacity: .85;
    }
    .agent-call-status { color: var(--slate-600); margin-top: 14px; }
    .agent-call-status[data-state="connecting"],
    .agent-call-status[data-state="listening"],
    .agent-call-status[data-state="speaking"],
    .agent-call-status[data-state="connected"] { color: var(--accent); font-weight: 600; }
    .agent-call-status[data-state="error"] { color: #DC2626; font-weight: 600; }
    .agent-call {
      margin-top: 18px;
      background: var(--navy-900); color: #fff; border: 1px solid transparent;
    }
    .agent-call:hover { background: var(--navy-700); transform: translateY(-1px); }
    .agent-call.is-active { background: #B91C1C; }
    .agent-call:disabled { opacity: .7; cursor: progress; }
    [data-vapi-status][data-state="idle"] { min-height: 0; }