* { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      background: #f8fafc;
      color: #1e293b;
    }

    main {
      min-height: calc(100vh - 64px);
    }

    nav {
      background: white;
      border-bottom: 1px solid #e2e8f0;
      padding: 0 32px;
      display: flex;
      align-items: center;
      height: 64px;
      gap: 32px;
    }
    .nav-back {
      color: #64748b;
      text-decoration: none;
      font-size: 13px;
      padding: 6px 12px;
      border: 1px solid #e2e8f0;
      border-radius: 6px;
    }
    .nav-back:hover { background: #f8fafc; }
    .nav-logo { font-weight: 700; font-size: 17px; color: #0f172a; }
    .nav-logo span { color: #64748b; font-weight: 400; }
    .nav-links { display: flex; gap: 24px; margin-left: auto; }
    .nav-links a { text-decoration: none; color: #64748b; font-size: 14px; }
    .nav-cta {
      background: #1e3a5f;
      color: white;
      border: none;
      padding: 8px 20px;
      border-radius: 6px;
      font-size: 14px;
      font-weight: 600;
      cursor: pointer;
      text-decoration: none;
    }

    .hero {
      max-width: 980px;
      margin: 72px auto;
      padding: 0 24px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .hero-badge {
      display: inline-block;
      background: #dbeafe;
      color: #1d4ed8;
      padding: 4px 12px;
      border-radius: 20px;
      font-size: 12px;
      font-weight: 600;
      margin-bottom: 16px;
    }
    .hero h1 { font-size: 38px; font-weight: 800; line-height: 1.15; margin-bottom: 18px; }
    .hero h1 span { color: #1e3a5f; }
    .hero p { font-size: 16px; color: #475569; line-height: 1.7; margin-bottom: 28px; }

    .demo-notice {
      background: #fffbeb;
      border: 1px solid #fde68a;
      border-radius: 10px;
      padding: 14px 16px;
      font-size: 13px;
      color: #92400e;
      line-height: 1.6;
      margin-bottom: 24px;
    }
    .demo-notice strong { display: block; margin-bottom: 4px; }

    .hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
    .btn-primary,
    .btn-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      text-decoration: none;
      min-height: 46px;
      border-radius: 8px;
      font-size: 15px;
      font-weight: 700;
      cursor: pointer;
      padding: 0 22px;
    }

    .btn-primary {
      background: #1e3a5f;
      color: white;
      border: none;
      transition: background 0.2s;
    }
    .btn-primary:hover { background: #1e293b; }

    .btn-secondary {
      background: white;
      color: #1e3a5f;
      border: 1px solid #cbd5e1;
    }

    .hero-visual {
      background: white;
      border-radius: 16px;
      padding: 28px;
      box-shadow: 0 4px 24px rgba(0,0,0,0.08);
    }
    .flow-steps { display: flex; flex-direction: column; gap: 14px; }
    .flow-step {
      display: flex;
      align-items: flex-start;
      gap: 12px;
    }
    .step-num {
      width: 28px; height: 28px;
      background: #1e3a5f;
      color: white;
      border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      font-size: 13px;
      font-weight: 700;
      flex-shrink: 0;
    }
    .step-text h4 { font-size: 14px; font-weight: 700; margin-bottom: 2px; }
    .step-text p { font-size: 12px; color: #64748b; line-height: 1.4; }
    .flow-divider { border: none; border-top: 1px dashed #e2e8f0; }

    .wa-preview {
      margin-top: 20px;
      background: #f0fdf4;
      border: 1px solid #bbf7d0;
      border-radius: 10px;
      padding: 14px;
      font-size: 12px;
      line-height: 1.7;
      font-family: monospace;
      color: #166534;
    }
    .wa-preview .wa-header { font-weight: 700; margin-bottom: 6px; font-size: 13px; }

    .try-card {
      max-width: 980px;
      margin: -28px auto 72px;
      padding: 28px;
      display: grid;
      grid-template-columns: minmax(0, 0.82fr) minmax(300px, 1fr);
      gap: 28px;
      background: white;
      border: 1px solid #e2e8f0;
      border-radius: 16px;
      box-shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
      scroll-margin-top: 84px;
    }

    .try-card span {
      display: inline-block;
      margin-bottom: 10px;
      color: #1d4ed8;
      font-size: 12px;
      font-weight: 800;
      letter-spacing: 0.08em;
      text-transform: uppercase;
    }

    .try-card h2 {
      margin-bottom: 12px;
      color: #0f172a;
      font-size: 26px;
      line-height: 1.15;
    }

    .try-card p,
    .try-card li {
      color: #475569;
      font-size: 14px;
      line-height: 1.7;
    }

    .try-card ol {
      display: grid;
      gap: 10px;
      padding-left: 20px;
    }

    .lead-preview-modal[hidden] { display: none; }

    .lead-preview-modal {
      position: fixed;
      inset: 0;
      z-index: 1000001;
      display: grid;
      place-items: center;
      padding: 20px;
    }

    .lead-preview-backdrop {
      position: absolute;
      inset: 0;
      background: rgba(15, 23, 42, 0.62);
    }

    .lead-preview-panel {
      position: relative;
      width: min(640px, 100%);
      max-height: min(760px, calc(100vh - 40px));
      overflow: auto;
      padding: 28px;
      border-radius: 16px;
      background: #ffffff;
      box-shadow: 0 28px 90px rgba(15, 23, 42, 0.28);
    }

    .lead-preview-kicker {
      display: inline-flex;
      margin-bottom: 10px;
      color: #1d4ed8;
      font-size: 12px;
      font-weight: 900;
      letter-spacing: 0.08em;
      text-transform: uppercase;
    }

    .lead-preview-panel h2 {
      margin-bottom: 10px;
      color: #0f172a;
      font-size: 28px;
      line-height: 1.15;
    }

    .lead-preview-panel p {
      color: #475569;
      line-height: 1.6;
    }

    .lead-preview-panel pre {
      margin: 18px 0 20px;
      padding: 18px;
      border-radius: 12px;
      border: 1px solid #bbf7d0;
      background: #f0fdf4;
      color: #14532d;
      white-space: pre-wrap;
      font: 13px/1.65 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    }

    .services {
      max-width: 980px;
      margin: 0 auto 72px;
      padding: 0 24px;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .service {
      background: white;
      border-radius: 12px;
      padding: 24px;
      box-shadow: 0 1px 4px rgba(0,0,0,0.06);
    }
    .service .icon { font-size: 28px; margin-bottom: 12px; }
    .service h3 { font-size: 15px; font-weight: 700; margin-bottom: 8px; }
    .service p { font-size: 13px; color: #64748b; line-height: 1.6; }

    .hint {
      text-align: center;
      padding: 0 24px 48px;
      font-size: 13px;
      color: #94a3b8;
    }
    .hint span {
      background: #dbeafe;
      color: #1d4ed8;
      padding: 2px 8px;
      border-radius: 4px;
      font-family: monospace;
      font-size: 12px;
    }

    @media (max-width: 680px) {
      .hero { grid-template-columns: 1fr; margin: 40px auto; }
      .try-card { grid-template-columns: 1fr; margin: 0 20px 48px; }
      .services { grid-template-columns: 1fr; }
      .nav-links { display: none; }
    }

    /* demo strip */
    .demo-strip {
      background: linear-gradient(90deg, #082f49, #0c4a6e);
      border-bottom: 1px solid rgba(14,165,233,0.25);
      padding: 10px 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      flex-wrap: wrap;
    }
    .demo-strip-msg {
      display: flex; align-items: center; gap: 10px;
      font-size: 13px; color: #7dd3fc;
    }
    .demo-strip-msg strong { color: white; }
    .demo-strip-chip {
      background: rgba(14,165,233,0.2);
      border: 1px solid rgba(14,165,233,0.3);
      border-radius: 4px; padding: 2px 8px;
      font-size: 12px; font-family: monospace;
      color: #38bdf8; cursor: pointer; white-space: nowrap;
    }
    .demo-strip-right { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
    .live-dot { width: 6px; height: 6px; border-radius: 50%; background: #4ade80; animation: pulse-g 2s ease-in-out infinite; }
    @keyframes pulse-g { 0%,100%{opacity:1;} 50%{opacity:0.4;} }
    .live-label { font-size: 12px; color: #86efac; font-weight: 600; }