*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    :root {
      --bg: #0a0a0f;
      --surface: #111118;
      --surface2: #16161f;
      --border: rgba(255,255,255,0.07);
      --border-bright: rgba(255,255,255,0.13);
      --accent: #6ee7b7;
      --accent2: #3b82f6;
      --accent-dim: rgba(110,231,183,0.12);
      --text: #f0f0f5;
      --text-muted: #6b7280;
      --text-dim: #9ca3af;
      --red: #f87171;
      --font-display: 'Syne', sans-serif;
      --font-body: 'DM Sans', sans-serif;
    }

    html { scroll-behavior: smooth; }

    body {
      background: var(--bg);
      color: var(--text);
      font-family: var(--font-body);
      font-size: 16px;
      line-height: 1.6;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    /* ── NOISE OVERLAY ── */
    body::before {
      content: '';
      position: fixed;
      inset: 0;
      background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
      pointer-events: none;
      z-index: 0;
      opacity: 0.4;
    }

    /* ── GLOW ORBS ── */
    .orb {
      position: fixed;
      border-radius: 50%;
      filter: blur(120px);
      pointer-events: none;
      z-index: 0;
    }
    .orb-1 {
      width: 600px; height: 600px;
      background: radial-gradient(circle, rgba(110,231,183,0.07) 0%, transparent 70%);
      top: -200px; left: -200px;
    }
    .orb-2 {
      width: 500px; height: 500px;
      background: radial-gradient(circle, rgba(59,130,246,0.06) 0%, transparent 70%);
      bottom: -100px; right: -100px;
    }

    /* ── NAV ── */
    nav {
      position: fixed;
      top: 0; left: 0; right: 0;
      z-index: 100;
      padding: 20px 40px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid var(--border);
      background: rgba(10,10,15,0.85);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
    }

    .logo {
      font-family: var(--font-display);
      font-size: 20px;
      font-weight: 700;
      letter-spacing: -0.02em;
      color: var(--text);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .logo-dot {
      width: 7px; height: 7px;
      background: var(--accent);
      border-radius: 50%;
      display: inline-block;
      box-shadow: 0 0 10px var(--accent);
      animation: pulse 2.5s ease-in-out infinite;
    }

    @keyframes pulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.5; transform: scale(0.8); }
    }

    .nav-tag {
      font-size: 12px;
      font-weight: 500;
      color: var(--accent);
      background: var(--accent-dim);
      border: 1px solid rgba(110,231,183,0.2);
      padding: 4px 12px;
      border-radius: 100px;
      letter-spacing: 0.05em;
      text-transform: uppercase;
    }

    /* ── HERO ── */
    .hero {
      position: relative;
      z-index: 1;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      text-align: center;
      padding: 120px 24px 80px;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--surface);
      border: 1px solid var(--border-bright);
      border-radius: 100px;
      padding: 6px 16px 6px 8px;
      font-size: 13px;
      color: var(--text-dim);
      margin-bottom: 40px;
      animation: fadeUp 0.6s ease both;
    }

    .hero-badge-icon {
      width: 20px; height: 20px;
      background: var(--accent-dim);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 11px;
    }

    .hero-badge-icon i,
    .option-btn i,
    .problem-icon i,
    .feature-icon-wrap i,
    .chat-avatar i {
      font-style: normal;
      line-height: 1;
    }

    .option-btn i {
      font-size: 12px;
    }

    .problem-icon i,
    .feature-icon-wrap i,
    .chat-avatar i {
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }

    .problem-icon i {
      font-size: 26px;
    }

    .feature-icon-wrap i {
      font-size: 20px;
    }

    .chat-avatar i {
      font-size: 16px;
      color: #ffffff;
    }

    .hero h1 {
      font-family: var(--font-display);
      font-size: clamp(44px, 7vw, 88px);
      font-weight: 800;
      line-height: 1.0;
      letter-spacing: -0.03em;
      margin-bottom: 28px;
      animation: fadeUp 0.6s ease 0.1s both;
    }

    .hero h1 .line-accent {
      background: linear-gradient(135deg, var(--accent) 0%, #34d399 50%, var(--accent2) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .hero-sub {
      font-size: clamp(16px, 2.2vw, 20px);
      color: var(--text-dim);
      max-width: 540px;
      font-weight: 300;
      line-height: 1.7;
      margin-bottom: 56px;
      animation: fadeUp 0.6s ease 0.2s both;
    }

    /* ── FORM ── */
    .form-wrap {
      width: 100%;
      max-width: 480px;
      animation: fadeUp 0.6s ease 0.3s both;
    }

    .form-row {
      display: flex;
      gap: 10px;
      margin-bottom: 16px;
    }

    .input-field {
      flex: 1;
      background: var(--surface);
      border: 1px solid var(--border-bright);
      border-radius: 10px;
      padding: 14px 18px;
      font-family: var(--font-body);
      font-size: 15px;
      color: var(--text);
      outline: none;
      transition: border-color 0.2s, box-shadow 0.2s;
    }

    .input-field::placeholder { color: var(--text-muted); }

    .input-field:focus {
      border-color: rgba(110,231,183,0.4);
      box-shadow: 0 0 0 3px rgba(110,231,183,0.08);
    }

    .btn-submit {
      background: var(--accent);
      color: #0a0a0f;
      border: none;
      border-radius: 10px;
      padding: 14px 24px;
      font-family: var(--font-display);
      font-size: 15px;
      font-weight: 700;
      cursor: pointer;
      white-space: nowrap;
      transition: opacity 0.2s, transform 0.15s, box-shadow 0.2s;
      box-shadow: 0 0 24px rgba(110,231,183,0.2);
    }

    .btn-submit:hover {
      opacity: 0.9;
      transform: translateY(-1px);
      box-shadow: 0 0 36px rgba(110,231,183,0.35);
    }

    .btn-submit:active { transform: translateY(0); }

    .btn-submit.loading { opacity: 0.7; pointer-events: none; }

    /* ── SURVEY QUESTION ── */
    .survey-label {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 10px;
      text-align: left;
    }

    .options-row {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
      margin-bottom: 16px;
    }

    .option-btn {
      background: var(--surface);
      border: 1px solid var(--border-bright);
      border-radius: 8px;
      padding: 8px 14px;
      font-family: var(--font-body);
      font-size: 13px;
      color: var(--text-dim);
      cursor: pointer;
      transition: all 0.15s;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .option-btn:hover {
      border-color: rgba(110,231,183,0.3);
      color: var(--text);
    }

    .option-btn.selected {
      background: var(--accent-dim);
      border-color: rgba(110,231,183,0.5);
      color: var(--accent);
    }

    /* ── SUCCESS STATE ── */
    .success-msg {
      display: none;
      flex-direction: column;
      align-items: center;
      gap: 12px;
      padding: 28px;
      background: var(--surface);
      border: 1px solid rgba(110,231,183,0.2);
      border-radius: 16px;
      animation: fadeUp 0.4s ease both;
    }

    .success-icon {
      width: 48px; height: 48px;
      background: var(--accent-dim);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
    }

    .success-msg h3 {
      font-family: var(--font-display);
      font-size: 18px;
      font-weight: 700;
    }

    .success-msg p {
      font-size: 14px;
      color: var(--text-muted);
      text-align: center;
    }

    /* ── STAT ROW ── */
    .stat-row {
      display: flex;
      gap: 40px;
      justify-content: center;
      flex-wrap: wrap;
      margin-top: 64px;
      animation: fadeUp 0.6s ease 0.4s both;
    }

    .stat {
      text-align: center;
    }

    .stat-num {
      font-family: var(--font-display);
      font-size: 32px;
      font-weight: 800;
      color: var(--text);
      letter-spacing: -0.03em;
      line-height: 1;
    }

    .stat-num span { color: var(--accent); }

    .stat-label {
      font-size: 13px;
      color: var(--text-muted);
      margin-top: 4px;
    }

    .stat-divider {
      width: 1px;
      background: var(--border);
      align-self: stretch;
    }

    /* ── SECTION ── */
    section {
      position: relative;
      z-index: 1;
      padding: 100px 24px;
      max-width: 1000px;
      margin: 0 auto;
    }

    .section-label {
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 16px;
    }

    .section-title {
      font-family: var(--font-display);
      font-size: clamp(28px, 4vw, 44px);
      font-weight: 700;
      letter-spacing: -0.02em;
      line-height: 1.15;
      margin-bottom: 16px;
    }

    .section-sub {
      font-size: 17px;
      color: var(--text-dim);
      font-weight: 300;
      max-width: 520px;
      line-height: 1.7;
    }

    /* ── PROBLEM SECTION ── */
    .problem-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 16px;
      margin-top: 56px;
    }

    .problem-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 16px;
      padding: 28px;
      transition: border-color 0.2s, transform 0.2s;
      opacity: 0;
      transform: translateY(20px);
    }

    .problem-card.visible {
      animation: fadeUp 0.5s ease forwards;
    }

    .problem-card:hover {
      border-color: var(--border-bright);
      transform: translateY(-2px);
    }

    .problem-icon {
      font-size: 28px;
      margin-bottom: 16px;
    }

    .problem-card h3 {
      font-family: var(--font-display);
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 10px;
      letter-spacing: -0.01em;
    }

    .problem-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .problem-card .stat-highlight {
      font-family: var(--font-display);
      font-size: 28px;
      font-weight: 800;
      color: var(--red);
      margin-bottom: 8px;
      letter-spacing: -0.03em;
    }

    /* ── WORKFLOW ── */
    .workflow-list {
      position: relative;
      margin-top: 56px;
      padding-left: 28px;
    }

    .workflow-list::before {
      content: '';
      position: absolute;
      left: 12px;
      top: 10px;
      bottom: 10px;
      width: 1px;
      background: linear-gradient(180deg, transparent, var(--border-bright), transparent);
    }

    .workflow-step {
      position: relative;
      display: grid;
      grid-template-columns: 56px minmax(0, 1fr) auto;
      gap: 20px;
      align-items: start;
      padding: 22px 0;
    }

    .workflow-step + .workflow-step {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
    }

    .workflow-step-marker {
      width: 28px;
      height: 28px;
      margin-top: 4px;
      border-radius: 999px;
      border: 1px solid rgba(110,231,183,0.22);
      background: rgba(17,17,24,0.92);
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-family: var(--font-display);
      font-size: 11px;
      font-weight: 700;
      letter-spacing: 0.08em;
      position: relative;
      z-index: 1;
    }

    .workflow-step-copy h3 {
      font-family: var(--font-display);
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 8px;
      letter-spacing: -0.02em;
    }

    .workflow-step-copy p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.75;
      max-width: 640px;
    }

    .workflow-step-note {
      align-self: center;
      font-size: 11px;
      font-weight: 600;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--accent);
      background: var(--accent-dim);
      border: 1px solid rgba(110,231,183,0.16);
      padding: 4px 10px;
      border-radius: 999px;
      white-space: nowrap;
    }

    /* ── CHAT MOCKUP ── */
    .chat-mockup {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 20px;
      padding: 24px;
      max-width: 380px;
      margin: 56px auto 0;
      font-size: 14px;
    }

    .chat-header {
      display: flex;
      align-items: center;
      gap: 10px;
      padding-bottom: 16px;
      border-bottom: 1px solid var(--border);
      margin-bottom: 20px;
    }

    .chat-avatar {
      width: 36px; height: 36px;
      background: linear-gradient(135deg, var(--accent), var(--accent2));
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      flex-shrink: 0;
    }

    .chat-name { font-weight: 600; font-size: 15px; }
    .chat-status { font-size: 12px; color: var(--accent); }

    .chat-bubble {
      padding: 10px 14px;
      border-radius: 14px;
      margin-bottom: 8px;
      max-width: 85%;
      line-height: 1.5;
      opacity: 0;
    }

    .chat-bubble.client {
      background: var(--surface2);
      border: 1px solid var(--border);
      border-bottom-left-radius: 4px;
      align-self: flex-start;
      color: var(--text-dim);
    }

    .chat-bubble.bot {
      background: var(--accent-dim);
      border: 1px solid rgba(110,231,183,0.2);
      border-bottom-right-radius: 4px;
      margin-left: auto;
      color: var(--accent);
      font-weight: 500;
    }

    .chat-bubble.command {
      background: rgba(59,130,246,0.1);
      border: 1px solid rgba(59,130,246,0.2);
      border-bottom-right-radius: 4px;
      margin-left: auto;
      color: #93c5fd;
      font-family: monospace;
      font-size: 13px;
    }

    .chat-time {
      font-size: 11px;
      color: var(--text-muted);
      margin-bottom: 12px;
      text-align: center;
    }

    .chat-bubbles { display: flex; flex-direction: column; }

    /* ── FOOTER ── */
    footer {
      position: relative;
      z-index: 1;
      border-top: 1px solid var(--border);
      padding: 40px 24px;
      text-align: center;
    }

    .footer-logo {
      font-family: var(--font-display);
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
    }

    .footer-sub {
      font-size: 13px;
      color: var(--text-muted);
    }

    .footer-sub a {
      color: var(--text-dim);
      text-decoration: none;
      transition: color 0.15s;
    }

    .footer-sub a:hover { color: var(--accent); }

    /* ── DIVIDER LINE ── */
    .section-line {
      position: relative;
      z-index: 1;
      height: 1px;
      background: linear-gradient(90deg, transparent, var(--border-bright), transparent);
      max-width: 1000px;
      margin: 0 auto;
    }

    /* ── ANIMATIONS ── */
    @keyframes fadeUp {
      from { opacity: 0; transform: translateY(20px); }
      to { opacity: 1; transform: translateY(0); }
    }

    /* ── RESPONSIVE ── */
    @media (max-width: 640px) {
      nav { padding: 16px 20px; }
      .form-row { flex-direction: column; }
      .btn-submit { width: 100%; }
      .stat-divider { display: none; }
      .stat-row { gap: 32px; }
      .workflow-list { padding-left: 20px; }
      .workflow-step {
        grid-template-columns: 40px 1fr;
        gap: 14px;
      }
      .workflow-step-note {
        grid-column: 2;
        justify-self: start;
        margin-top: 6px;
      }
    }