:root {
    --navy: #0b2545;
    --navy-2: #13315c;
    --teal: #0f9d8f;
    --teal-light: #e6f6f4;
    --ink: #1c2533;
    --muted: #5b6676;
    --line: #e3e7ed;
    --bg: #ffffff;
    --bg-soft: #f6f8fb;
    --radius: 14px;
    --max: 1120px;
  }
  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    margin: 0;
    font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.6;
    font-size: 17px;
    -webkit-font-smoothing: antialiased;
  }
  h1, h2, h3 { font-family: Fraunces, Georgia, serif; color: var(--navy); line-height: 1.15; margin: 0 0 .5em; }
  h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); letter-spacing: -0.01em; }
  h2 { font-size: clamp(1.7rem, 3.5vw, 2.4rem); }
  h3 { font-size: 1.25rem; font-family: Inter, sans-serif; font-weight: 700; }
  p { margin: 0 0 1em; }
  a { color: var(--teal); }
  .wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
  section { padding: 88px 0; }
  .eyebrow { display: inline-block; font-size: .8rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--teal); margin-bottom: 14px; }
  .lead { font-size: 1.15rem; color: var(--muted); max-width: 640px; }
  .center { text-align: center; }
  .center .lead { margin-left: auto; margin-right: auto; }

  /* Buttons */
  .btn { display: inline-block; padding: 14px 26px; border-radius: 999px; font-weight: 600; text-decoration: none; transition: transform .15s, box-shadow .15s, background .15s; font-size: 1rem; }
  .btn-primary { background: var(--teal); color: #fff; box-shadow: 0 6px 18px rgba(15,157,143,.28); }
  .btn-primary:hover { background: #0c8a7d; transform: translateY(-1px); }
  .btn-ghost { color: var(--navy); border: 1.5px solid var(--line); background: #fff; }
  .btn-ghost:hover { border-color: var(--navy); }
  .btn-light { background: #fff; color: var(--navy); }
  .btn-light:hover { transform: translateY(-1px); }
  .btn-outline-light { color: #fff; border: 1.5px solid rgba(255,255,255,.4); }
  .btn-outline-light:hover { border-color: #fff; }

  /* Nav */
  header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.92); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
  .nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
  .logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--navy); font-weight: 700; font-size: 1.1rem; }
  .logo svg { width: 36px; height: 36px; }
  .logo span em { font-style: normal; color: var(--teal); }
  .nav-links { display: flex; gap: 28px; align-items: center; }
  .nav-links a { color: var(--ink); text-decoration: none; font-weight: 500; font-size: .95rem; }
  .nav-links a:hover { color: var(--teal); }
  .nav-links .btn { color: #fff; padding: 10px 20px; }
  .menu-btn { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
  .menu-btn span { display: block; width: 24px; height: 2px; background: var(--navy); margin: 5px 0; }

  /* Hero */
  .hero { padding: 96px 0 80px; background:
      radial-gradient(900px 400px at 85% -10%, rgba(15,157,143,.12), transparent 60%),
      radial-gradient(700px 400px at -10% 110%, rgba(19,49,92,.08), transparent 60%); }
  .hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
  .hero h1 .accent { color: var(--teal); }
  .hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; margin: 30px 0 22px; }
  .hero-note { font-size: .92rem; color: var(--muted); display: flex; gap: 18px; flex-wrap: wrap; }
  .hero-note span::before { content: "✓"; color: var(--teal); font-weight: 700; margin-right: 6px; }
  .hero-card { background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 26px; box-shadow: 0 24px 60px rgba(11,37,69,.12); }
  .hero-card .row { display: flex; align-items: center; gap: 14px; padding: 14px 0; border-bottom: 1px dashed var(--line); }
  .hero-card .row:last-child { border-bottom: 0; }
  .dot { width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; flex-shrink: 0; font-size: 1.1rem; }
  .dot.ai { background: var(--teal-light); color: var(--teal); }
  .dot.cpa { background: #e8eef7; color: var(--navy); }
  .hero-card strong { display: block; font-size: .98rem; color: var(--navy); }
  .hero-card small { color: var(--muted); font-size: .85rem; }
  .hero-card .tag { margin-left: auto; font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; padding: 4px 10px; border-radius: 999px; background: var(--teal-light); color: var(--teal); }
  .hero-card .tag.done { background: #e8eef7; color: var(--navy); }
  .hero-card .card-title { font-size: .8rem; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); font-weight: 700; margin-bottom: 6px; }

  /* How it works */
  .how { background: var(--bg-soft); }
  .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-top: 48px; counter-reset: step; }
  .step { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 24px; position: relative; }
  .step::before { counter-increment: step; content: counter(step); display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%; background: var(--navy); color: #fff; font-weight: 700; margin-bottom: 18px; }
  .step.ai-step::before { background: var(--teal); }
  .step p { color: var(--muted); font-size: .97rem; margin: 0; }
  .step .who { font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--teal); display: block; margin-bottom: 6px; }
  .step:not(.ai-step) .who { color: var(--navy-2); }

  /* Services */
  .services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 48px; }
  .service { border: 1px solid var(--line); border-radius: var(--radius); padding: 32px 28px; background: #fff; display: flex; flex-direction: column; transition: box-shadow .2s, transform .2s; }
  .service:hover { box-shadow: 0 16px 40px rgba(11,37,69,.08); transform: translateY(-2px); }
  .service .icon { width: 52px; height: 52px; border-radius: 12px; background: var(--teal-light); display: grid; place-items: center; margin-bottom: 20px; }
  .service .icon svg { width: 26px; height: 26px; stroke: var(--teal); }
  .service p { color: var(--muted); }
  .service ul { list-style: none; padding: 0; margin: 4px 0 0; }
  .service li { padding: 6px 0 6px 26px; position: relative; font-size: .96rem; }
  .service li::before { content: ""; position: absolute; left: 0; top: 13px; width: 14px; height: 8px; border-left: 2px solid var(--teal); border-bottom: 2px solid var(--teal); transform: rotate(-45deg); }

  /* Why */
  .why { background: var(--navy); color: #dfe7f2; }
  .why h2 { color: #fff; }
  .why .lead { color: #b9c6d8; }
  .why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: 48px; }
  .why-item h3 { color: #fff; }
  .why-item p { color: #b9c6d8; font-size: .97rem; }
  .why-item .num { font-family: Fraunces, serif; font-size: 2.2rem; color: #5eead4; display: block; margin-bottom: 6px; }

  /* Security */
  .split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
  .checklist { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
  .checklist li { background: var(--bg-soft); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px 16px 52px; position: relative; }
  .checklist li::before { content: ""; position: absolute; left: 18px; top: 18px; width: 20px; height: 20px; border-radius: 50%; background: var(--teal) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M5 10.5l3 3 7-7' stroke='white' stroke-width='2.2' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat; }
  .checklist strong { color: var(--navy); }

  /* Who */
  .who-section { background: var(--bg-soft); }
  .pills { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 32px; }
  .pill { background: #fff; border: 1px solid var(--line); padding: 10px 18px; border-radius: 999px; font-weight: 500; color: var(--navy); }

  /* About */
  .about-card { display: grid; grid-template-columns: 220px 1fr; gap: 44px; align-items: center; background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 44px; }
  .avatar { width: 220px; height: 220px; border-radius: 20px; background: linear-gradient(135deg, var(--navy), var(--teal)); display: grid; place-items: center; color: #fff; font-family: Fraunces, serif; font-size: 4rem; }
  .creds { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
  .cred { font-size: .82rem; font-weight: 600; background: #e8eef7; color: var(--navy); padding: 6px 12px; border-radius: 8px; }

  /* FAQ */
  .faq { max-width: 800px; margin: 40px auto 0; }
  details { border-bottom: 1px solid var(--line); padding: 20px 0; }
  summary { cursor: pointer; font-weight: 600; font-size: 1.08rem; color: var(--navy); list-style: none; display: flex; justify-content: space-between; gap: 20px; }
  summary::-webkit-details-marker { display: none; }
  summary::after { content: "+"; font-size: 1.5rem; line-height: 1; color: var(--teal); transition: transform .2s; }
  details[open] summary::after { transform: rotate(45deg); }
  details p { color: var(--muted); margin: 12px 0 0; }

  /* CTA */
  .cta { background: linear-gradient(135deg, var(--navy) 0%, var(--navy-2) 55%, #0e6d68 100%); color: #fff; text-align: center; border-radius: 24px; padding: 72px 32px; }
  .cta h2 { color: #fff; }
  .cta p { color: #cfdae8; max-width: 560px; margin: 0 auto 30px; font-size: 1.1rem; }
  .cta .btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

  /* Footer */
  footer { padding: 48px 0 40px; color: var(--muted); font-size: .9rem; }
  .foot { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; align-items: center; }
  footer a { color: var(--muted); text-decoration: none; }
  footer a:hover { color: var(--teal); }
  .foot-links { display: flex; gap: 22px; flex-wrap: wrap; }

  /* Responsive */
  @media (max-width: 960px) {
    .hero-grid, .split { grid-template-columns: 1fr; gap: 40px; }
    .steps { grid-template-columns: repeat(2, 1fr); }
    .services-grid, .why-grid { grid-template-columns: 1fr; }
    .about-card { grid-template-columns: 1fr; text-align: center; padding: 32px 24px; }
    .avatar { margin: 0 auto; width: 160px; height: 160px; font-size: 3rem; }
    .creds { justify-content: center; }
  }
  @media (max-width: 760px) {
    body { font-size: 16px; }
    section { padding: 64px 0; }
    .hero { padding: 56px 0 56px; }
    .menu-btn { display: block; }
    .nav-links { display: none; position: absolute; top: 72px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 20px; gap: 18px; border-bottom: 1px solid var(--line); box-shadow: 0 12px 24px rgba(0,0,0,.06); }
    .nav-links.open { display: flex; }
    .steps { grid-template-columns: 1fr; }
    .cta { padding: 52px 22px; border-radius: 18px; }
    .foot { flex-direction: column; text-align: center; }
  }

  /* Professionals */
  .pro-teaser { background: var(--bg-soft); }
  .nav-links a.active { color: var(--teal); }
  .compare { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 48px; }
  .compare .col { border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 28px; background: #fff; }
  .compare .col.after { border-color: var(--teal); box-shadow: 0 16px 40px rgba(15,157,143,.10); }
  .compare h3 { margin-bottom: 14px; }
  .compare ul { list-style: none; padding: 0; margin: 0; }
  .compare li { padding: 8px 0 8px 28px; position: relative; color: var(--muted); border-bottom: 1px dashed var(--line); }
  .compare li:last-child { border-bottom: 0; }
  .compare .before li::before { content: "–"; position: absolute; left: 6px; color: #b4bcc8; font-weight: 700; }
  .compare .after li { color: var(--ink); }
  .compare .after li::before { content: ""; position: absolute; left: 0; top: 15px; width: 14px; height: 8px; border-left: 2px solid var(--teal); border-bottom: 2px solid var(--teal); transform: rotate(-45deg); }
  @media (max-width: 960px) { .compare { grid-template-columns: 1fr; } }