:root{
    --bg:#FAFAF8;
    --surface:#FFFFFF;
    --ink:#10131A;
    --muted:#6B7280;
    --accent:#FF5533;
    --accent-soft:#FFEDE8;
    --line:#E7E5E0;
    --radius:16px;
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{
    background:var(--bg);
    color:var(--ink);
    font-family:'Inter',system-ui,sans-serif;
    line-height:1.5;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,.brand{font-family:'Space Grotesk',system-ui,sans-serif}
  .mono{font-family:'JetBrains Mono',monospace}
  a{color:inherit;text-decoration:none}
  img,svg{display:block}
  :focus-visible{outline:2px solid var(--accent);outline-offset:3px}
  .wrap{max-width:1120px;margin:0 auto;padding:0 24px}

  /* Header */
  header{
    position:sticky;top:0;z-index:50;
    background:rgba(250,250,248,0.85);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
  }
  .nav{display:flex;align-items:center;justify-content:space-between;padding:16px 24px}
  .brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:1.15rem}
  .brand-mark{
    width:30px;height:30px;border-radius:8px;
    background:var(--accent);
    display:flex;align-items:center;justify-content:center;
    color:#fff;font-weight:700;font-size:0.95rem;
  }
  .nav-links{display:flex;gap:28px;font-size:0.94rem;color:var(--muted)}
  .nav-links a:hover{color:var(--ink)}
  .nav-cta{display:flex;align-items:center;gap:14px}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;
    padding:10px 20px;border-radius:999px;font-size:0.92rem;font-weight:600;
    border:1px solid transparent;cursor:pointer;transition:transform .15s ease, background .15s ease;
  }
  .btn:active{transform:scale(0.97)}
  .btn-primary{background:var(--ink);color:#fff}
  .btn-primary:hover{background:#000}
  .btn-ghost{color:var(--ink)}
  .btn-ghost:hover{color:var(--accent)}
  .menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:6px}
  .menu-toggle span{display:block;width:22px;height:2px;background:var(--ink);margin:5px 0}

  /* Hero */
  .hero{padding:64px 24px 40px}
  .hero-grid{
    max-width:1120px;margin:0 auto;
    display:grid;grid-template-columns:1.1fr 0.9fr;gap:56px;align-items:center;
  }
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    background:var(--accent-soft);color:var(--accent);
    font-size:0.8rem;font-weight:600;padding:6px 14px;border-radius:999px;margin-bottom:20px;
  }
  .eyebrow-dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}
  .hero h1{font-size:2.6rem;font-weight:700;line-height:1.12;letter-spacing:-0.02em;margin-bottom:18px}
  .hero p.lead{color:var(--muted);font-size:1.08rem;max-width:480px;margin-bottom:28px}
  .hero-actions{display:flex;gap:14px;align-items:center;flex-wrap:wrap}
  .btn-lg{padding:14px 26px;font-size:0.98rem}
  .hero-note{margin-top:22px;font-size:0.85rem;color:var(--muted)}

  /* Phone mock */
  .phone-stage{display:flex;justify-content:center}
  .phone{
    width:280px;background:var(--surface);border:1px solid var(--line);
    border-radius:28px;padding:18px;box-shadow:0 24px 60px -24px rgba(16,19,26,0.25);
  }
  .phone-top{display:flex;justify-content:space-between;align-items:center;font-size:0.72rem;color:var(--muted);margin-bottom:14px}
  .sms-card{
    background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:14px;margin-bottom:10px;
  }
  .sms-head{display:flex;align-items:center;gap:8px;margin-bottom:8px}
  .sms-avatar{width:26px;height:26px;border-radius:8px;background:var(--ink);color:#fff;font-size:0.68rem;display:flex;align-items:center;justify-content:center;font-weight:700}
  .sms-from{font-size:0.78rem;font-weight:600}
  .sms-body{font-size:0.82rem;color:var(--ink)}
  .otp-code{
    font-size:1.5rem;font-weight:600;letter-spacing:0.14em;color:var(--accent);
    min-height:1.9rem;
  }
  .otp-caret{display:inline-block;width:2px;height:1.2rem;background:var(--accent);vertical-align:-3px;animation:blink 1s step-end infinite}
  @keyframes blink{50%{opacity:0}}
  .status-pill{
    display:inline-flex;align-items:center;gap:6px;font-size:0.72rem;color:#1a7f4f;
    background:#E7F7EE;padding:4px 10px;border-radius:999px;font-weight:600;
  }

  /* Trust strip */
  .trust{padding:12px 24px 56px}
  .trust-label{text-align:center;color:var(--muted);font-size:0.82rem;margin-bottom:18px}
  .trust-row{
    max-width:900px;margin:0 auto;display:flex;flex-wrap:wrap;gap:10px;justify-content:center;
  }
  .trust-chip{
    border:1px solid var(--line);background:var(--surface);
    padding:8px 16px;border-radius:999px;font-size:0.85rem;font-weight:500;color:var(--ink);
  }

  /* Sections */
  section{padding:64px 24px}
  .section-head{max-width:560px;margin:0 auto 40px;text-align:center}
  .section-head h2{font-size:1.9rem;font-weight:700;letter-spacing:-0.01em;margin-bottom:10px}
  .section-head p{color:var(--muted)}

  .features{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;max-width:1120px;margin:0 auto}
  .feature-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
    padding:26px;
  }
  .feature-icon{
    width:40px;height:40px;border-radius:10px;background:var(--accent-soft);
    display:flex;align-items:center;justify-content:center;margin-bottom:16px;color:var(--accent);font-weight:700;
  }
  .feature-card h3{font-size:1.05rem;margin-bottom:8px}
  .feature-card p{color:var(--muted);font-size:0.92rem}

  .how{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .steps{
    max-width:1120px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  }
  .step{position:relative;padding-left:0}
  .step-num{
    font-family:'JetBrains Mono',monospace;color:var(--accent);font-size:0.82rem;font-weight:600;
    margin-bottom:10px;display:block;
  }
  .step h3{font-size:1rem;margin-bottom:6px}
  .step p{color:var(--muted);font-size:0.88rem}

  .cta-band{
    max-width:1120px;margin:0 auto;background:var(--ink);border-radius:24px;
    padding:52px 40px;text-align:center;color:#fff;
  }
  .cta-band h2{font-size:1.8rem;margin-bottom:10px;font-family:'Space Grotesk'}
  .cta-band p{color:#B7BAC2;margin-bottom:26px}
  .btn-inverse{background:#fff;color:var(--ink)}
  .btn-inverse:hover{background:var(--accent-soft)}

  footer{padding:36px 24px;border-top:1px solid var(--line)}
  .footer-row{
    max-width:1120px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;
    color:var(--muted);font-size:0.85rem;flex-wrap:wrap;gap:12px;
  }

  @media(max-width:1024px) and (min-width:769px){
    .hero h1{font-size:2.3rem}
    .hero-grid{gap:36px}
    .features{grid-template-columns:repeat(3,1fr);gap:14px}
    .feature-card{padding:20px}
  }
  @media(max-width:860px){
    .hero-grid{grid-template-columns:1fr;gap:36px}
    .hero h1{font-size:2.1rem}
    .nav-links{display:none}
    .menu-toggle{display:block}
    .features{grid-template-columns:repeat(2,1fr)}
    .steps{grid-template-columns:repeat(2,1fr)}
    .cta-band{padding:40px 22px}
  }
  @media(max-width:540px){
    .features{grid-template-columns:1fr}
    .hero h1{font-size:1.8rem}
    .phone{width:100%;max-width:280px}
  }
  @media(prefers-reduced-motion:reduce){
    .otp-caret{animation:none}
    html{scroll-behavior:auto}
  }