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

    :root {
      --bg: #f5f7f6;
      --bg-elevated: #ffffff;
      --bg-card: #ffffff;
      --surface: #edf0ee;
      --border: #d4dbd7;
      --border-light: #bfc8c2;
      --text: #1a2420;
      --text-muted: #506058;
      --text-dim: #7d8e86;
      --cream: #111916;
      --green: #25D366;
      --green-glow: rgba(37, 211, 102, 0.1);
      --green-dark: #1eba58;
      --green-muted: rgba(37, 211, 102, 0.1);
      --amber: #d49b00;
      --amber-dim: rgba(245, 200, 66, 0.08);
      --instagram: #E1306C;
      --instagram-glow: rgba(225, 48, 108, 0.15);
      --radius: 16px;
      --radius-sm: 10px;
      --radius-xs: 6px;
      --nav-bg: rgba(245, 247, 246, 0.88);
      --shadow-strong: rgba(0,0,0,0.08);
      --shadow-medium: rgba(0,0,0,0.06);
      --shadow-light: rgba(0,0,0,0.04);
      --grain-opacity: 0.012;
      --highlight-subtle: rgba(0,0,0,0.02);
      --highlight-btn: rgba(255,255,255,0.25);
      --outgoing-time: rgba(26, 36, 32, 0.35);
    }

    /* Light theme explicit */
    [data-theme="light"] {
      --bg: #f5f7f6;
      --bg-elevated: #ffffff;
      --bg-card: #ffffff;
      --surface: #edf0ee;
      --border: #d4dbd7;
      --border-light: #bfc8c2;
      --text: #1a2420;
      --text-muted: #506058;
      --text-dim: #7d8e86;
      --cream: #111916;
      --green: #25D366;
      --green-glow: rgba(37, 211, 102, 0.1);
      --green-dark: #1eba58;
      --green-muted: rgba(37, 211, 102, 0.1);
      --amber: #d49b00;
      --amber-dim: rgba(245, 200, 66, 0.08);
      --nav-bg: rgba(245, 247, 246, 0.88);
      --shadow-strong: rgba(0,0,0,0.08);
      --shadow-medium: rgba(0,0,0,0.06);
      --shadow-light: rgba(0,0,0,0.04);
      --grain-opacity: 0.012;
      --highlight-subtle: rgba(0,0,0,0.02);
      --highlight-btn: rgba(255,255,255,0.25);
      --outgoing-time: rgba(26, 36, 32, 0.35);
    }

    /* Dark theme */
    [data-theme="dark"] {
      --bg: #0a0f0d;
      --bg-elevated: #111916;
      --bg-card: #161e1a;
      --surface: #1c2621;
      --border: #243029;
      --border-light: #2d3d33;
      --text: #e8e4dc;
      --text-muted: #8a9690;
      --text-dim: #5a6b62;
      --cream: #f5f0e8;
      --green: #25D366;
      --green-glow: rgba(37, 211, 102, 0.15);
      --green-dark: #1eba58;
      --green-muted: #1a7a3e;
      --amber: #f5c842;
      --amber-dim: rgba(245, 200, 66, 0.12);
      --nav-bg: rgba(10, 15, 13, 0.85);
      --shadow-strong: rgba(0,0,0,0.4);
      --shadow-medium: rgba(0,0,0,0.25);
      --shadow-light: rgba(0,0,0,0.2);
      --grain-opacity: 0.025;
      --highlight-subtle: rgba(255,255,255,0.03);
      --highlight-btn: rgba(255,255,255,0.15);
      --outgoing-time: rgba(245, 240, 232, 0.4);
    }

    /* Auto-detect system preference when no manual choice */
    @media (prefers-color-scheme: dark) {
      html:not([data-theme="dark"]):not([data-theme="light"]) {
        --bg: #0a0f0d;
        --bg-elevated: #111916;
        --bg-card: #161e1a;
        --surface: #1c2621;
        --border: #243029;
        --border-light: #2d3d33;
        --text: #e8e4dc;
        --text-muted: #8a9690;
        --text-dim: #5a6b62;
        --cream: #f5f0e8;
        --green: #25D366;
        --green-glow: rgba(37, 211, 102, 0.15);
        --green-dark: #1eba58;
        --green-muted: #1a7a3e;
        --amber: #f5c842;
        --amber-dim: rgba(245, 200, 66, 0.12);
        --nav-bg: rgba(10, 15, 13, 0.85);
        --shadow-strong: rgba(0,0,0,0.4);
        --shadow-medium: rgba(0,0,0,0.25);
        --shadow-light: rgba(0,0,0,0.2);
        --grain-opacity: 0.025;
        --highlight-subtle: rgba(255,255,255,0.03);
        --highlight-btn: rgba(255,255,255,0.15);
        --outgoing-time: rgba(245, 240, 232, 0.4);
      }
    }

    html { scroll-behavior: smooth; }

    body {
      font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
      color: var(--text);
      background: var(--bg);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      overflow-x: hidden;
    }

    h1, h2, h3, h4 {
      font-family: 'Plus Jakarta Sans', sans-serif;
      line-height: 1.2;
    }

    /* ===== GRAIN OVERLAY ===== */
    body::before {
      content: "";
      position: fixed;
      inset: 0;
      z-index: 9999;
      pointer-events: none;
      opacity: var(--grain-opacity);
      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)'/%3E%3C/svg%3E");
      background-repeat: repeat;
      background-size: 128px 128px;
    }

    /* ===== SCROLL REVEAL ===== */
    .reveal {
      opacity: 0;
      transform: translateY(32px);
      transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }
    .reveal-delay-1 { transition-delay: 0.1s; }
    .reveal-delay-2 { transition-delay: 0.2s; }
    .reveal-delay-3 { transition-delay: 0.3s; }
    .reveal-delay-4 { transition-delay: 0.4s; }
    .reveal-delay-5 { transition-delay: 0.5s; }

    /* ===== NAV ===== */
    nav {
      position: fixed;
      top: 0;
      width: 100%;
      z-index: 100;
      background: var(--nav-bg);
      backdrop-filter: blur(20px) saturate(1.4);
      -webkit-backdrop-filter: blur(20px) saturate(1.4);
      border-bottom: 1px solid var(--border);
    }
    .nav-inner {
      max-width: 1120px;
      margin: 0 auto;
      padding: 0.85rem 1.5rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .logo {
      font-family: 'Plus Jakarta Sans', sans-serif;
      font-weight: 800;
      font-size: 1.2rem;
      color: var(--cream);
      text-decoration: none;
      letter-spacing: -0.02em;
    }
    .logo span { color: var(--green); }
    .nav-cta {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: var(--green);
      color: #0a0f0d;
      padding: 0.5rem 1.1rem;
      border-radius: 100px;
      text-decoration: none;
      font-weight: 700;
      font-size: 0.8rem;
      letter-spacing: 0.01em;
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      box-shadow: 0 0 20px var(--green-glow);
    }
    .nav-cta:hover {
      background: #2ee872;
      transform: translateY(-1px);
      box-shadow: 0 0 30px rgba(37, 211, 102, 0.25);
    }
    .nav-cta svg { width: 14px; height: 14px; }

    /* ===== HERO ===== */
    .hero {
      position: relative;
      padding: 7.5rem 1.5rem 3rem;
      max-width: 1120px;
      margin: 0 auto;
      display: grid;
      grid-template-columns: 1fr;
      gap: 2.5rem;
      align-items: center;
    }
    .hero-bg-glow {
      position: absolute;
      top: -20%;
      left: 50%;
      transform: translateX(-50%);
      width: 600px;
      height: 600px;
      background: radial-gradient(circle, rgba(37, 211, 102, 0.08) 0%, transparent 70%);
      pointer-events: none;
      z-index: 0;
    }
    .hero-content { position: relative; z-index: 1; }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: var(--green-glow);
      border: 1px solid rgba(37, 211, 102, 0.2);
      color: var(--green);
      font-size: 0.78rem;
      font-weight: 600;
      padding: 0.4rem 0.9rem;
      border-radius: 100px;
      margin-bottom: 1.5rem;
      letter-spacing: 0.01em;
    }
    .hero-badge::before {
      content: "";
      width: 6px;
      height: 6px;
      background: var(--green);
      border-radius: 50%;
      animation: pulse-dot 2s ease-in-out infinite;
    }
    @keyframes pulse-dot {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(0.7); }
    }
    .hero h1 {
      font-size: 2.5rem;
      font-weight: 800;
      color: var(--cream);
      margin-bottom: 1.25rem;
      letter-spacing: -0.03em;
    }
    .hero h1 .highlight {
      font-family: 'Newsreader', Georgia, serif;
      font-style: italic;
      font-weight: 400;
      letter-spacing: -0.01em;
      color: var(--green-dark);
      -webkit-text-fill-color: currentColor;
      background: none;
    }
    [data-theme="dark"] .hero h1 .highlight { color: var(--green); }
    @media (prefers-color-scheme: dark) { html:not([data-theme="light"]) .hero h1 .highlight { color: var(--green); } }
    .hero-slogan {
      font-family: 'JetBrains Mono', ui-monospace, monospace;
      font-size: 0.7rem;
      text-transform: uppercase;
      letter-spacing: 0.18em;
      color: var(--green-dark);
      margin-bottom: 1rem;
      font-weight: 500;
    }
    [data-theme="dark"] .hero-slogan { color: var(--green); }
    @media (prefers-color-scheme: dark) { html:not([data-theme="light"]) .hero-slogan { color: var(--green); } }
    .hero-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      margin-bottom: 2rem;
      max-width: 480px;
      line-height: 1.7;
    }
    .hero-actions {
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
      align-items: flex-start;
    }
    .btn-primary {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--green);
      color: #0a0f0d;
      padding: 0.95rem 1.75rem;
      border-radius: 14px;
      text-decoration: none;
      font-family: 'Plus Jakarta Sans', sans-serif;
      font-weight: 700;
      font-size: 1rem;
      letter-spacing: -0.01em;
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      box-shadow: 0 4px 24px rgba(37, 211, 102, 0.3), inset 0 1px 0 var(--highlight-btn);
    }
    .btn-primary:hover {
      background: #2ee872;
      transform: translateY(-2px);
      box-shadow: 0 8px 40px rgba(37, 211, 102, 0.35), inset 0 1px 0 var(--highlight-btn);
    }
    .btn-primary svg { width: 20px; height: 20px; }
    .hero-sub {
      font-size: 0.78rem;
      color: var(--text-dim);
      padding-left: 0.25rem;
    }
    .hero-proof {
      display: flex; flex-wrap: wrap; gap: 1.75rem;
      margin-top: 1.75rem; padding-top: 1.5rem;
      border-top: 1px solid var(--border);
    }
    .hero-proof .hp { display: flex; flex-direction: column; gap: 4px; }
    .hero-proof .hp b {
      font-family: 'Plus Jakarta Sans', sans-serif; font-size: 1.5rem; font-weight: 800;
      color: var(--cream); letter-spacing: -0.03em; line-height: 1;
    }
    .hero-proof .hp span { font-family: 'JetBrains Mono', monospace; font-size: 0.62rem; color: var(--text-muted); letter-spacing: 0.02em; }

    /* ===== CHAT MOCKUP ===== */
    .hero-visual { position: relative; z-index: 1; }
    .chat-window {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: 20px;
      overflow: hidden;
      box-shadow:
        0 0 0 1px var(--highlight-subtle),
        0 24px 80px var(--shadow-strong),
        0 0 60px var(--green-glow);
      max-width: 380px;
      margin: 0 auto;
    }
    .chat-header {
      background: var(--surface);
      padding: 0.85rem 1rem;
      display: flex;
      align-items: center;
      gap: 0.65rem;
      border-bottom: 1px solid var(--border);
    }
    .chat-avatar {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--green), #06d6a0);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.85rem;
      font-weight: 800;
      color: #0a0f0d;
      flex-shrink: 0;
    }
    .chat-header-info {
      flex: 1;
      min-width: 0;
    }
    .chat-header-name {
      font-family: 'Plus Jakarta Sans', sans-serif;
      font-weight: 700;
      font-size: 0.85rem;
      color: var(--cream);
    }
    .chat-header-status {
      font-size: 0.7rem;
      color: var(--green);
      display: flex;
      align-items: center;
      gap: 4px;
    }
    .chat-header-status::before {
      content: "";
      width: 5px;
      height: 5px;
      background: var(--green);
      border-radius: 50%;
    }
    .chat-body {
      padding: 1rem;
      display: flex;
      flex-direction: column;
      gap: 0.5rem;
      min-height: 260px;
    }
    .chat-msg {
      max-width: 82%;
      padding: 0.6rem 0.85rem;
      border-radius: 12px;
      font-size: 0.82rem;
      line-height: 1.5;
      opacity: 0;
      transform: translateY(10px);
      animation: msg-in 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    }
    .chat-msg.incoming {
      background: var(--surface);
      border: 1px solid var(--border);
      color: var(--text);
      align-self: flex-start;
      border-bottom-left-radius: 4px;
    }
    .chat-msg.outgoing {
      background: var(--green-muted);
      border: 1px solid rgba(37, 211, 102, 0.15);
      color: var(--cream);
      align-self: flex-end;
      border-bottom-right-radius: 4px;
    }
    .chat-msg .time {
      display: block;
      font-size: 0.62rem;
      color: var(--text-dim);
      margin-top: 3px;
      text-align: right;
    }
    .chat-msg.outgoing .time { color: var(--outgoing-time); }
    .chat-typing {
      align-self: flex-start;
      background: var(--surface);
      border: 1px solid var(--border);
      padding: 0.6rem 0.85rem;
      border-radius: 12px;
      border-bottom-left-radius: 4px;
      display: flex;
      gap: 4px;
      opacity: 0;
      animation: msg-in 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    }
    .chat-typing span {
      width: 6px;
      height: 6px;
      background: var(--text-dim);
      border-radius: 50%;
      animation: typing-bounce 1.4s ease-in-out infinite;
    }
    .chat-typing span:nth-child(2) { animation-delay: 0.15s; }
    .chat-typing span:nth-child(3) { animation-delay: 0.3s; }
    @keyframes typing-bounce {
      0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
      30% { transform: translateY(-4px); opacity: 1; }
    }
    @keyframes msg-in {
      to { opacity: 1; transform: translateY(0); }
    }
    .msg-d1 { animation-delay: 0.3s; }
    .msg-d2 { animation-delay: 1.2s; }
    .msg-d3 { animation-delay: 2.0s; }
    .msg-d4 { animation-delay: 3.5s; }
    .msg-d5 { animation-delay: 5.5s; }

    /* ===== STATS ===== */
    .stats {
      padding: 2rem 1.5rem 3rem;
      max-width: 1120px;
      margin: 0 auto;
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1px;
      background: var(--border);
      border-radius: var(--radius);
      overflow: hidden;
    }
    .stat-item {
      background: var(--bg-card);
      padding: 1.5rem 1rem;
      text-align: center;
    }
    .stat-item strong {
      display: block;
      font-family: 'Plus Jakarta Sans', sans-serif;
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--green);
      letter-spacing: -0.02em;
    }
    .stat-item span {
      font-size: 0.75rem;
      color: var(--text-dim);
      letter-spacing: 0.02em;
      text-transform: uppercase;
      font-weight: 500;
    }

    /* ===== DEMO SECTION ===== */
    .demos {
      padding: 4rem 1.5rem;
      max-width: 1120px;
      margin: 0 auto;
      position: relative;
    }
    .demos-header .section-title .serif {
      font-family: 'Newsreader', Georgia, serif; font-style: italic; font-weight: 400;
      letter-spacing: -0.01em; color: var(--green-dark);
    }
    [data-theme="dark"] .demos-header .section-title .serif { color: var(--green); }
    @media (prefers-color-scheme: dark) { html:not([data-theme="light"]) .demos-header .section-title .serif { color: var(--green); } }
    .demo-card.demo-featured {
      order: -1;
      border-color: var(--green);
      box-shadow: 0 0 0 1px var(--green), 0 12px 48px var(--green-glow);
    }
    .demo-featured-strip {
      background: var(--green); color: #07120c;
      font-family: 'JetBrains Mono', monospace; font-size: 0.6rem; font-weight: 500;
      letter-spacing: 0.06em; text-transform: uppercase; text-align: center;
      padding: 0.35rem 0.5rem;
    }
    .demos-header {
      text-align: center;
      margin-bottom: 2.5rem;
    }
    .demos-header .section-label { margin-bottom: 0.75rem; }
    .demos-header .section-title {
      margin-bottom: 0.5rem;
      text-align: center;
    }
    .demos-header .section-subtitle {
      max-width: 520px;
      margin: 0 auto;
      text-align: center;
    }
    .demo-live-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(37, 211, 102, 0.08);
      border: 1px solid rgba(37, 211, 102, 0.18);
      color: var(--green);
      font-size: 0.72rem;
      font-weight: 700;
      padding: 0.3rem 0.75rem;
      border-radius: 100px;
      margin-bottom: 1rem;
      text-transform: uppercase;
      letter-spacing: 0.08em;
    }
    .demo-live-tag::before {
      content: "";
      width: 6px;
      height: 6px;
      background: var(--green);
      border-radius: 50%;
      animation: pulse-dot 2s ease-in-out infinite;
    }
    .demos-scroll {
      display: flex;
      gap: 1.25rem;
      overflow-x: auto;
      scroll-snap-type: x mandatory;
      -webkit-overflow-scrolling: touch;
      padding-bottom: 1rem;
      scrollbar-width: none;
    }
    .demos-scroll::-webkit-scrollbar { display: none; }
    .demo-card {
      flex: 0 0 300px;
      scroll-snap-align: start;
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: 20px;
      overflow: hidden;
      transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
      position: relative;
    }
    .demo-card:hover {
      border-color: var(--border-light);
      transform: translateY(-4px);
      box-shadow: 0 12px 48px var(--shadow-medium), 0 0 40px var(--green-glow);
    }
    .demo-card-header {
      padding: 0.75rem 1rem;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 0.5rem;
      border-bottom: 1px solid var(--border);
      background: var(--surface);
    }
    .demo-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      flex-shrink: 0;
    }
    .demo-avatar.medico { background: linear-gradient(135deg, #4fc3f7, #0288d1); }
    .demo-avatar.escola { background: linear-gradient(135deg, #ffb74d, #f57c00); }
    .demo-avatar.doces { background: linear-gradient(135deg, #f48fb1, #e91e63); }
    .demo-avatar.barber { background: linear-gradient(135deg, #a1887f, #5d4037); }
    .demo-avatar.imoveis { background: linear-gradient(135deg, #81c784, #388e3c); }
    .demo-card-info {
      flex-basis: 100%;
      order: 1;
      min-width: 0;
    }
    .demo-card-name {
      font-family: 'Plus Jakarta Sans', sans-serif;
      font-weight: 700;
      font-size: 0.88rem;
      color: var(--cream);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .demo-card-type {
      font-size: 0.7rem;
      color: var(--text-dim);
      margin-top: 1px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .demo-card-online {
      font-size: 0.62rem;
      color: var(--green);
      display: flex;
      align-items: center;
      gap: 3px;
      flex-shrink: 0;
    }
    .demo-card-online::before {
      content: "";
      width: 5px;
      height: 5px;
      background: var(--green);
      border-radius: 50%;
    }
    .demo-chat-preview {
      padding: 0.85rem 1rem;
      display: flex;
      flex-direction: column;
      gap: 0.4rem;
      min-height: 175px;
    }
    .demo-msg {
      max-width: 85%;
      padding: 0.5rem 0.75rem;
      border-radius: 10px;
      font-size: 0.76rem;
      line-height: 1.45;
    }
    .demo-msg.out {
      background: var(--green-muted);
      border: 1px solid rgba(37, 211, 102, 0.12);
      color: var(--cream);
      align-self: flex-end;
      border-bottom-right-radius: 3px;
    }
    .demo-msg.in {
      background: var(--surface);
      border: 1px solid var(--border);
      color: var(--text);
      align-self: flex-start;
      border-bottom-left-radius: 3px;
    }
    .demo-card-footer {
      padding: 0.85rem 1rem 1rem;
      border-top: 1px solid var(--border);
    }
    .demo-card-desc {
      font-size: 0.78rem;
      color: var(--text-muted);
      margin-bottom: 0.75rem;
      line-height: 1.5;
    }
    .btn-demo {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      width: 100%;
      padding: 0.65rem 1rem;
      background: var(--green);
      color: #0a0f0d;
      border-radius: 10px;
      text-decoration: none;
      font-family: 'Plus Jakarta Sans', sans-serif;
      font-weight: 700;
      font-size: 0.82rem;
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      box-shadow: 0 2px 12px rgba(37, 211, 102, 0.2);
    }
    .btn-demo:hover {
      background: #2ee872;
      transform: translateY(-1px);
      box-shadow: 0 4px 20px rgba(37, 211, 102, 0.3);
    }
    .btn-demo svg { width: 14px; height: 14px; }
    .demo-buttons { display: flex; flex-direction: column; gap: 0.4rem; }
    .btn-demo-ig {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      width: 100%;
      padding: 0.55rem 1rem;
      background: transparent;
      color: var(--instagram);
      border: 1px solid var(--instagram);
      border-radius: 10px;
      text-decoration: none;
      font-family: 'Plus Jakarta Sans', sans-serif;
      font-weight: 600;
      font-size: 0.78rem;
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .btn-demo-ig:hover {
      background: var(--instagram-glow);
      transform: translateY(-1px);
    }
    .btn-demo-ig svg { width: 14px; height: 14px; }
    .channel-badges {
      display: flex;
      align-items: center;
      gap: 0.35rem;
      margin-left: auto;
      flex-shrink: 0;
    }
    .channel-badge {
      width: 20px;
      height: 20px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .channel-badge svg { width: 12px; height: 12px; }
    .channel-badge.wa { color: var(--green); }
    .channel-badge.ig { color: var(--instagram); }
    .demos-hint {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      margin-top: 1rem;
      font-size: 0.75rem;
      color: var(--text-dim);
    }
    .demos-hint svg { width: 16px; height: 16px; opacity: 0.5; }
    @media (min-width: 768px) {
      .demos-hint { display: none; }
    }
    @media (min-width: 1024px) {
      .demos-scroll {
        display: grid;
        grid-template-columns: repeat(5, 1fr);
        gap: 1rem;
        overflow: visible;
      }
      .demo-card { flex: none; }
    }
    @media (min-width: 768px) and (max-width: 1023px) {
      .demo-card { flex: 0 0 280px; }
    }

    /* ===== FEATURES — EDITORIAL SPREAD ===== */
    .feat-spread {
      padding: 5rem 1.5rem 5.5rem;
      max-width: 1120px;
      margin: 0 auto;
    }
    .fsp-kicker {
      font-family: 'JetBrains Mono', ui-monospace, monospace;
      font-size: 0.7rem; font-weight: 500; text-transform: uppercase;
      letter-spacing: 0.18em; color: var(--green-dark);
      display: inline-flex; align-items: center; gap: 0.55rem; margin-bottom: 1.25rem;
    }
    [data-theme="dark"] .fsp-kicker { color: var(--green); }
    @media (prefers-color-scheme: dark) { html:not([data-theme="light"]) .fsp-kicker { color: var(--green); } }
    .fsp-kicker::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px var(--green-glow); }
    .fsp-head { max-width: 720px; margin-bottom: 3rem; }
    .fsp-head h2 {
      font-family: 'Plus Jakarta Sans', sans-serif; font-size: clamp(2rem, 4.5vw, 3rem);
      font-weight: 800; line-height: 1.04; letter-spacing: -0.03em; color: var(--cream); margin-bottom: 1.1rem;
      text-wrap: balance;
    }
    .fsp-head h2 .serif, .fsp-row h3 .serif {
      font-family: 'Newsreader', Georgia, serif; font-style: italic; font-weight: 400; letter-spacing: -0.005em; color: var(--text-muted);
    }
    .fsp-head .lede { font-size: 1.05rem; color: var(--text-muted); line-height: 1.6; max-width: 56ch; }
    .fsp-head .lede strong { color: var(--text); font-weight: 600; }

    /* proof stats band */
    .fsp-stats {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
      border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
      background: var(--bg-card); margin-bottom: 0.9rem;
    }
    .fsp-stat { padding: 1.2rem 1.35rem; border-right: 1px solid var(--border); }
    .fsp-stat:last-child { border-right: none; }
    .fsp-stat .n { font-family: 'Plus Jakarta Sans', sans-serif; font-size: clamp(1.7rem, 3.4vw, 2.5rem); font-weight: 800; letter-spacing: -0.04em; color: var(--cream); line-height: 1; }
    .fsp-stat .n .u { color: var(--green-dark); font-size: 0.6em; }
    [data-theme="dark"] .fsp-stat .n .u { color: var(--green); }
    @media (prefers-color-scheme: dark) { html:not([data-theme="light"]) .fsp-stat .n .u { color: var(--green); } }
    .fsp-stat .l { font-family: 'JetBrains Mono', monospace; font-size: 0.64rem; color: var(--text-muted); margin-top: 0.55rem; line-height: 1.45; }
    .fsp-stats-note { font-family: 'JetBrains Mono', monospace; font-size: 0.62rem; color: var(--text-dim); margin-bottom: 2.5rem; letter-spacing: 0.02em; }
    @media (max-width: 680px) {
      .fsp-stats { grid-template-columns: repeat(2, 1fr); }
      .fsp-stat:nth-child(2) { border-right: none; }
      .fsp-stat:nth-child(1), .fsp-stat:nth-child(2) { border-bottom: 1px solid var(--border); }
    }

    .fsp-row {
      display: grid; grid-template-columns: 1fr; gap: 1.5rem;
      padding: 2.25rem 0; border-top: 1px solid var(--border); align-items: start;
    }
    .fsp-row:last-of-type { border-bottom: 1px solid var(--border); }
    .fsp-num { font-family: 'JetBrains Mono', monospace; font-size: 0.8rem; font-weight: 500; color: var(--green-dark); }
    [data-theme="dark"] .fsp-num { color: var(--green); }
    @media (prefers-color-scheme: dark) { html:not([data-theme="light"]) .fsp-num { color: var(--green); } }
    .fsp-text h3 {
      font-family: 'Plus Jakarta Sans', sans-serif; font-size: 1.5rem; font-weight: 800;
      letter-spacing: -0.025em; color: var(--cream); margin-bottom: 0.7rem; line-height: 1.1; max-width: 18ch;
    }
    .fsp-text p { color: var(--text-muted); font-size: 0.96rem; line-height: 1.65; max-width: 46ch; }
    .fsp-tags { display: flex; gap: 0.45rem; margin-top: 1rem; flex-wrap: wrap; }
    .fsp-tags span {
      font-family: 'JetBrains Mono', monospace; font-size: 0.62rem; padding: 0.25rem 0.6rem;
      border-radius: 100px; border: 1px solid var(--border); color: var(--text-muted); white-space: nowrap;
    }
    .fsp-viz {
      background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
      padding: 1.25rem; min-height: 168px; display: flex; flex-direction: column; justify-content: center;
      box-shadow: 0 1px 3px var(--shadow-light);
    }
    @media (min-width: 860px) {
      .fsp-row { grid-template-columns: 52px minmax(0, 1fr) minmax(0, 1.05fr); gap: 2.25rem; }
      .fsp-num { padding-top: 0.3rem; }
    }

    /* --- viz: unified inbox --- */
    .vz-inbox { display: grid; gap: 0.5rem; width: 100%; }
    .vz-row {
      display: grid; grid-template-columns: 26px 1fr auto; gap: 0.7rem; align-items: center;
      padding: 0.6rem 0.7rem; background: var(--surface); border: 1px solid var(--border); border-radius: 11px;
    }
    .vz-src { width: 26px; height: 26px; border-radius: 50%; display: flex; align-items: center; justify-content: center; }
    .vz-src svg { width: 13px; height: 13px; }
    .vz-src.wa { background: rgba(37,211,102,0.16); color: var(--green-dark); }
    .vz-src.ig { background: rgba(225,48,108,0.16); color: #d83b7d; }
    .vz-src.msg { background: rgba(0,132,255,0.16); color: #2b8fff; }
    [data-theme="dark"] .vz-src.wa { color: var(--green); }
    .vz-who { font-size: 0.8rem; font-weight: 600; color: var(--text); line-height: 1.3; }
    .vz-who span { display: block; font-weight: 400; font-size: 0.74rem; color: var(--text-dim); margin-top: 1px; }
    .vz-st { font-family: 'JetBrains Mono', monospace; font-size: 0.6rem; padding: 0.15rem 0.45rem; border-radius: 5px; white-space: nowrap; }
    .vz-st.ai { background: rgba(37,211,102,0.14); color: var(--green-dark); }
    [data-theme="dark"] .vz-st.ai { color: var(--green); }
    .vz-st.esc { background: rgba(212,137,26,0.16); color: #c2861f; }
    [data-theme="dark"] .vz-st.esc { color: var(--amber); }

    /* --- viz: escalation pipeline --- */
    .vz-pipe { display: flex; flex-direction: column; position: relative; padding-left: 0.2rem; width: 100%; }
    .vz-pipe::before { content: ""; position: absolute; left: 5px; top: 14px; bottom: 14px; width: 1.5px; background: linear-gradient(var(--green), var(--amber)); }
    .vz-step { display: flex; align-items: center; gap: 0.7rem; padding: 0.45rem 0; position: relative; }
    .vz-step .d { width: 11px; height: 11px; border-radius: 50%; border: 2px solid var(--bg-card); flex-shrink: 0; z-index: 1; }
    .vz-step .t { font-size: 0.82rem; font-weight: 600; color: var(--text); }
    .vz-step .t span { font-weight: 400; color: var(--text-dim); font-family: 'JetBrains Mono', monospace; font-size: 0.66rem; margin-left: 0.4rem; }

    /* --- viz: mini kanban --- */
    .vz-kanban { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.4rem; width: 100%; }
    .vz-col { background: var(--surface); border-radius: 9px; padding: 0.5rem 0.4rem; }
    .vz-col .h { font-family: 'JetBrains Mono', monospace; font-size: 0.58rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-dim); margin-bottom: 0.45rem; display: flex; align-items: center; gap: 0.3rem; }
    .vz-col .h .d { width: 5px; height: 5px; border-radius: 50%; }
    .vz-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 7px; padding: 0.35rem 0.4rem; margin-bottom: 0.3rem; font-size: 0.66rem; font-weight: 600; color: var(--text); display: flex; align-items: center; gap: 0.35rem; }
    .vz-card:last-child { margin-bottom: 0; }
    .vz-card .av { width: 15px; height: 15px; border-radius: 50%; flex-shrink: 0; font-size: 0.5rem; color: #fff; display: flex; align-items: center; justify-content: center; font-family: 'JetBrains Mono', monospace; }

    /* --- viz: media (audio + image) --- */
    .vz-media { display: flex; flex-direction: column; gap: 0.6rem; width: 100%; }
    .vz-audio { display: flex; align-items: center; gap: 0.6rem; padding: 0.55rem 0.65rem; background: var(--surface); border-radius: 11px; }
    .vz-play { width: 26px; height: 26px; border-radius: 50%; background: var(--green); color: #07120c; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
    .vz-play svg { width: 11px; height: 11px; }
    .vz-wave { display: flex; align-items: center; gap: 2px; flex: 1; height: 22px; }
    .vz-wave i { width: 2.5px; border-radius: 2px; background: var(--green-dark); opacity: 0.55; }
    [data-theme="dark"] .vz-wave i { background: var(--green); }
    .vz-dur { font-family: 'JetBrains Mono', monospace; font-size: 0.62rem; color: var(--text-muted); white-space: nowrap; }
    .vz-trans { font-family: 'JetBrains Mono', monospace; font-size: 0.66rem; color: var(--green-dark); display: flex; align-items: center; gap: 0.35rem; }
    [data-theme="dark"] .vz-trans { color: var(--green); }
    .vz-trans::before { content: "↳"; }

    /* --- viz: analytics --- */
    .vz-an { display: flex; align-items: flex-end; justify-content: space-between; gap: 0.9rem; width: 100%; }
    .vz-stat { font-family: 'Plus Jakarta Sans', sans-serif; font-size: 2.6rem; font-weight: 800; letter-spacing: -0.04em; line-height: 1; color: var(--cream); }
    .vz-stat .u { font-size: 1.3rem; color: var(--green-dark); }
    [data-theme="dark"] .vz-stat .u { color: var(--green); }
    .vz-stat-cap { font-family: 'JetBrains Mono', monospace; font-size: 0.62rem; color: var(--text-muted); line-height: 1.4; }
    .vz-bars { display: flex; align-items: flex-end; gap: 0.4rem; height: 64px; flex: 1; }
    .vz-bars .b { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 0.3rem; height: 100%; justify-content: flex-end; }
    .vz-bars .bar { width: 100%; border-radius: 4px 4px 0 0; background: var(--border-light); }
    .vz-bars .b:last-child .bar { background: var(--green); }
    .vz-bars .lbl { font-family: 'JetBrains Mono', monospace; font-size: 0.52rem; color: var(--text-dim); }

    /* --- viz: sponte / integrations --- */
    .vz-sponte { display: flex; align-items: center; gap: 0.6rem; width: 100%; }
    .vz-node { padding: 0.5rem 0.7rem; border-radius: 9px; font-family: 'JetBrains Mono', monospace; font-size: 0.66rem; font-weight: 500; border: 1px solid var(--border); background: var(--surface); white-space: nowrap; color: var(--text); }
    .vz-node.brand { background: var(--cream); color: var(--bg); border-color: var(--cream); }
    .vz-link { flex: 1; height: 1px; background: repeating-linear-gradient(90deg, var(--border-light) 0 4px, transparent 4px 8px); min-width: 16px; }
    .vz-sponte-tags { display: flex; gap: 0.3rem; margin-top: 0.6rem; flex-wrap: wrap; }
    .vz-sponte-tags span { font-family: 'JetBrains Mono', monospace; font-size: 0.58rem; padding: 0.15rem 0.5rem; border-radius: 100px; background: var(--green-glow); color: var(--green-dark); }
    [data-theme="dark"] .vz-sponte-tags span { color: var(--green); }
    .fsp-more { margin-top: 2.5rem; }

    /* viz: KB self-learning suggestion */
    .vz-kb { width: 100%; display: flex; flex-direction: column; gap: 0.7rem; }
    .vz-kb-sig { display: flex; align-items: center; gap: 0.5rem; font-family: 'JetBrains Mono', monospace; font-size: 0.62rem; color: var(--text-muted); }
    .vz-kb-sig b { color: var(--cream); font-weight: 700; }
    .vz-kb-sig .pulse { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 0 var(--green); animation: kbpulse 2s infinite; }
    @keyframes kbpulse { 0% { box-shadow: 0 0 0 0 rgba(37,211,102,0.4); } 70% { box-shadow: 0 0 0 7px rgba(37,211,102,0); } 100% { box-shadow: 0 0 0 0 rgba(37,211,102,0); } }
    .vz-kb-card { background: var(--surface); border: 1px solid var(--border); border-left: 2px solid var(--green); border-radius: 10px; padding: 0.7rem 0.85rem; }
    .vz-kb-card .q { font-size: 0.8rem; font-weight: 600; color: var(--text); margin-bottom: 0.3rem; }
    .vz-kb-card .a { font-size: 0.74rem; color: var(--text-muted); line-height: 1.45; }
    .vz-kb-actions { display: flex; gap: 0.5rem; align-items: center; }
    .vz-kb-add { font-family: 'Plus Jakarta Sans', sans-serif; font-size: 0.72rem; font-weight: 700; color: #07120c; background: var(--green); border: none; border-radius: 8px; padding: 0.4rem 0.8rem; display: inline-flex; align-items: center; gap: 5px; }
    .vz-kb-skip { font-family: 'JetBrains Mono', monospace; font-size: 0.66rem; color: var(--text-dim); }

    /* ===== FEATURES (legacy cards — kept for funcionalidades.html parity) ===== */
    .features {
      padding: 4rem 1.5rem;
      max-width: 1120px;
      margin: 0 auto;
    }
    .section-label {
      font-size: 0.72rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.12em;
      color: var(--green);
      margin-bottom: 0.75rem;
    }
    .section-title {
      font-size: 1.75rem;
      font-weight: 800;
      color: var(--cream);
      letter-spacing: -0.03em;
      margin-bottom: 0.5rem;
    }
    .section-subtitle {
      color: var(--text-muted);
      font-size: 1rem;
      margin-bottom: 2.5rem;
      max-width: 480px;
    }
    .features-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 1rem;
    }
    .feature-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 1.5rem;
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      position: relative;
      overflow: hidden;
    }
    .feature-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 1px;
      background: linear-gradient(90deg, transparent, var(--green-glow), transparent);
      opacity: 0;
      transition: opacity 0.3s;
    }
    .feature-card:hover {
      border-color: var(--border-light);
      transform: translateY(-2px);
      box-shadow: 0 8px 40px var(--shadow-light);
    }
    .feature-card:hover::before { opacity: 1; }
    .feature-icon {
      width: 44px;
      height: 44px;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 1rem;
      font-size: 1.25rem;
    }
    .feature-icon.multi-channel {
      width: auto;
      gap: 0.5rem;
      padding: 0 0.5rem;
      background: none;
      border: none;
    }
    .feature-icon.multi-channel span {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 38px;
      height: 38px;
      border-radius: var(--radius-sm);
    }
    .feature-icon.multi-channel svg { width: 22px; height: 22px; }
    .fi-wa { background: var(--green-glow); color: var(--green); }
    .fi-ig { background: var(--instagram-glow); color: var(--instagram); }
    .fi-msg { background: rgba(0, 132, 255, 0.12); color: #0084FF; }
    .feature-card h3 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--cream);
      margin-bottom: 0.4rem;
      letter-spacing: -0.01em;
    }
    .feature-card p {
      color: var(--text-muted);
      font-size: 0.88rem;
      line-height: 1.6;
    }

    /* ===== HOW IT WORKS ===== */
    .how {
      padding: 4rem 1.5rem;
      position: relative;
    }
    .how::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, var(--bg) 0%, var(--bg-elevated) 20%, var(--bg-elevated) 80%, var(--bg) 100%);
      transition: background 0.3s;
      z-index: -1;
    }
    .how-inner {
      max-width: 640px;
      margin: 0 auto;
    }
    .how-steps {
      display: flex;
      flex-direction: column;
      gap: 0;
      position: relative;
    }
    .how-steps::before {
      content: "";
      position: absolute;
      left: 23px;
      top: 48px;
      bottom: 48px;
      width: 1px;
      background: linear-gradient(180deg, var(--green), var(--border));
    }
    .how-step {
      display: flex;
      gap: 1.25rem;
      align-items: flex-start;
      padding: 1.5rem 0;
    }
    .step-num {
      flex-shrink: 0;
      width: 47px;
      height: 47px;
      background: var(--bg-card);
      border: 2px solid var(--green);
      color: var(--green);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-family: 'Plus Jakarta Sans', sans-serif;
      font-weight: 800;
      font-size: 1rem;
      position: relative;
      z-index: 1;
    }
    .how-step h3 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--cream);
      margin-bottom: 0.35rem;
      letter-spacing: -0.01em;
    }
    .how-step p {
      color: var(--text-muted);
      font-size: 0.9rem;
      line-height: 1.6;
    }

    /* ===== PRICING ===== */
    .pricing {
      padding: 4rem 1.5rem;
      max-width: 880px;
      margin: 0 auto;
    }
    .price-cards {
      display: grid;
      grid-template-columns: 1fr;
      gap: 1.25rem;
      margin-top: 0.5rem;
    }
    .price-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: 20px;
      padding: 2rem 1.5rem;
      position: relative;
      transition: all 0.3s;
    }
    .price-card.featured {
      border-color: var(--green);
      box-shadow: 0 0 40px var(--green-glow), 0 24px 60px var(--shadow-medium);
    }
    .price-card .card-badge {
      position: absolute;
      top: -11px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--green);
      color: #0a0f0d;
      font-family: 'Plus Jakarta Sans', sans-serif;
      font-size: 0.7rem;
      font-weight: 800;
      padding: 0.25rem 0.85rem;
      border-radius: 100px;
      letter-spacing: 0.02em;
      text-transform: uppercase;
      white-space: nowrap;
    }
    .plan-name {
      font-family: 'Plus Jakarta Sans', sans-serif;
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--text-muted);
      margin-bottom: 0.75rem;
      text-transform: uppercase;
      letter-spacing: 0.08em;
    }
    .price-old {
      text-decoration: line-through;
      color: var(--text-dim);
      font-size: 0.95rem;
      margin-bottom: 0.15rem;
    }
    .price-value {
      font-family: 'Plus Jakarta Sans', sans-serif;
      font-size: 2.75rem;
      font-weight: 800;
      color: var(--cream);
      letter-spacing: -0.04em;
      line-height: 1;
    }
    .price-value small {
      font-size: 1rem;
      font-weight: 500;
      color: var(--text-muted);
      letter-spacing: 0;
    }
    .price-desc {
      color: var(--text-dim);
      margin: 0.5rem 0 1.5rem;
      font-size: 0.82rem;
    }
    .price-features {
      list-style: none;
      margin-bottom: 1.75rem;
    }
    .price-features li {
      padding: 0.4rem 0;
      font-size: 0.88rem;
      color: var(--text-muted);
      display: flex;
      align-items: center;
      gap: 0.6rem;
    }
    .price-features li::before {
      content: "";
      width: 18px;
      height: 18px;
      flex-shrink: 0;
      background: var(--green-glow);
      border-radius: 50%;
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2325D366'%3E%3Cpath d='M12.207 4.793a1 1 0 010 1.414l-5 5a1 1 0 01-1.414 0l-2-2a1 1 0 011.414-1.414L6.5 9.086l4.293-4.293a1 1 0 011.414 0z'/%3E%3C/svg%3E");
      background-size: 14px;
      background-position: center;
      background-repeat: no-repeat;
    }
    .btn-price {
      display: block;
      text-align: center;
      padding: 0.9rem;
      border-radius: 12px;
      text-decoration: none;
      font-family: 'Plus Jakarta Sans', sans-serif;
      font-weight: 700;
      font-size: 0.95rem;
      letter-spacing: -0.01em;
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .btn-price.primary {
      background: var(--green);
      color: #0a0f0d;
      box-shadow: 0 4px 20px rgba(37, 211, 102, 0.25);
    }
    .btn-price.primary:hover {
      background: #2ee872;
      transform: translateY(-1px);
      box-shadow: 0 8px 30px rgba(37, 211, 102, 0.3);
    }
    .btn-price.secondary {
      background: var(--surface);
      color: var(--text);
      border: 1px solid var(--border);
    }
    .btn-price.secondary:hover {
      border-color: var(--green);
      color: var(--green);
    }

    /* editorial single-card pricing */
    .price-head { text-align: center; max-width: 600px; margin: 0 auto 2.5rem; }
    .price-head .section-title { text-align: center; }
    .pricing .section-title .serif { font-family: 'Newsreader', Georgia, serif; font-style: italic; font-weight: 400; letter-spacing: -0.01em; color: var(--green-dark); }
    [data-theme="dark"] .pricing .section-title .serif { color: var(--green); }
    @media (prefers-color-scheme: dark) { html:not([data-theme="light"]) .pricing .section-title .serif { color: var(--green); } }
    .price-single {
      display: grid; grid-template-columns: 1fr;
      background: var(--bg-card); border: 1px solid var(--green); border-radius: 24px; overflow: hidden;
      box-shadow: 0 0 40px var(--green-glow), 0 24px 60px var(--shadow-medium);
    }
    @media (min-width: 760px) { .price-single { grid-template-columns: 1fr 1fr; } }
    .price-left { padding: 2.25rem; border-bottom: 1px solid var(--border); }
    @media (min-width: 760px) { .price-left { border-bottom: none; border-right: 1px solid var(--border); } }
    .price-right { padding: 2.25rem; }
    .price-toggle { display: inline-flex; background: var(--surface); border: 1px solid var(--border); border-radius: 100px; padding: 4px; margin-bottom: 1.5rem; gap: 2px; }
    .pt-opt { font-family: 'Plus Jakarta Sans', sans-serif; font-weight: 700; font-size: 0.82rem; color: var(--text-muted); background: none; border: none; padding: 0.5rem 1.05rem; border-radius: 100px; cursor: pointer; transition: all 0.25s; display: inline-flex; align-items: center; gap: 6px; }
    .pt-opt span { font-family: 'JetBrains Mono', monospace; font-size: 0.58rem; color: var(--green-dark); }
    .pt-opt.active { background: var(--green); color: #07120c; }
    .pt-opt.active span { color: #07120c; }
    [data-theme="dark"] .pt-opt:not(.active) span { color: var(--green); }
    .price-fineprint { font-family: 'JetBrains Mono', monospace; font-size: 0.62rem; color: var(--text-dim); margin-top: 0.9rem; }
    .price-incl-tag { font-family: 'JetBrains Mono', monospace; font-size: 0.62rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--green-dark); margin-bottom: 1.1rem; }
    [data-theme="dark"] .price-incl-tag { color: var(--green); }
    .price-right .price-features { margin-bottom: 0; }

    /* ===== FAQ ===== */
    .faq {
      padding: 3rem 1.5rem 4rem;
      max-width: 720px;
      margin: 0 auto;
    }
    .faq-item {
      border-bottom: 1px solid var(--border);
      padding: 1.15rem 0;
    }
    .faq-q {
      font-family: 'Plus Jakarta Sans', sans-serif;
      font-weight: 600;
      font-size: 0.95rem;
      color: var(--cream);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 1rem;
      transition: color 0.2s;
    }
    .faq-q:hover { color: var(--green); }
    .faq-q::after {
      content: "+";
      font-size: 1.2rem;
      color: var(--text-dim);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      flex-shrink: 0;
    }
    .faq-item.open .faq-q::after {
      transform: rotate(45deg);
      color: var(--green);
    }
    .faq-a {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1), padding 0.4s cubic-bezier(0.16, 1, 0.3, 1);
      color: var(--text-muted);
      font-size: 0.9rem;
      line-height: 1.7;
    }
    .faq-item.open .faq-a {
      max-height: 220px;
      padding-top: 0.75rem;
    }

    /* ===== FINAL CTA ===== */
    .how .section-title .serif,
    .faq .section-title .serif,
    .final-cta h2 .serif {
      font-family: 'Newsreader', Georgia, serif; font-style: italic; font-weight: 400;
      letter-spacing: -0.01em; color: var(--green-dark);
    }
    [data-theme="dark"] .how .section-title .serif,
    [data-theme="dark"] .faq .section-title .serif,
    [data-theme="dark"] .final-cta h2 .serif { color: var(--green); }
    @media (prefers-color-scheme: dark) {
      html:not([data-theme="light"]) .how .section-title .serif,
      html:not([data-theme="light"]) .faq .section-title .serif,
      html:not([data-theme="light"]) .final-cta h2 .serif { color: var(--green); }
    }
    .final-cta {
      position: relative;
      text-align: center;
      padding: 5rem 1.5rem;
      overflow: hidden;
    }
    .final-cta::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        radial-gradient(ellipse 60% 50% at 50% 50%, rgba(37, 211, 102, 0.1), transparent),
        linear-gradient(180deg, var(--bg) 0%, var(--bg-elevated) 100%);
      z-index: -1;
    }
    .final-cta h2 {
      font-size: 1.75rem;
      font-weight: 800;
      color: var(--cream);
      margin-bottom: 0.75rem;
      letter-spacing: -0.03em;
    }
    .final-cta p {
      color: var(--text-muted);
      margin-bottom: 2rem;
      font-size: 1.05rem;
    }
    .final-cta .btn-primary {
      margin: 0 auto;
    }

    /* ===== FOOTER ===== */
    footer {
      text-align: center;
      padding: 2rem 1.5rem;
      color: var(--text-dim);
      font-size: 0.78rem;
      border-top: 1px solid var(--border);
    }

    /* ===== FLOATING WHATSAPP ===== */
    .fab-whatsapp {
      position: fixed;
      bottom: 1.25rem;
      right: 1.25rem;
      z-index: 90;
      width: 56px;
      height: 56px;
      background: var(--green);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      text-decoration: none;
      box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      animation: fab-enter 0.6s 1s cubic-bezier(0.16, 1, 0.3, 1) both;
    }
    .fab-whatsapp:hover {
      transform: scale(1.08);
      box-shadow: 0 6px 30px rgba(37, 211, 102, 0.5);
    }
    .fab-whatsapp svg { width: 28px; height: 28px; }
    @keyframes fab-enter {
      from { opacity: 0; transform: scale(0.5) translateY(20px); }
      to { opacity: 1; transform: scale(1) translateY(0); }
    }
    .fab-whatsapp::before {
      content: "";
      position: absolute;
      inset: -4px;
      border-radius: 50%;
      border: 2px solid var(--green);
      opacity: 0;
      animation: fab-ping 3s ease-out infinite 2s;
    }
    @keyframes fab-ping {
      0% { opacity: 0.5; transform: scale(1); }
      100% { opacity: 0; transform: scale(1.5); }
    }

    /* ===== INTEGRATIONS SECTION ===== */
    .integrations {
      padding: 4rem 1.5rem;
      max-width: 1120px;
      margin: 0 auto;
    }
    .int-categories {
      display: grid;
      grid-template-columns: 1fr;
      gap: 1.25rem;
      margin-bottom: 2rem;
    }
    .int-cat {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 1.5rem;
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      position: relative;
      overflow: hidden;
    }
    .int-cat::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 1px;
      background: linear-gradient(90deg, transparent, var(--green-glow), transparent);
      opacity: 0;
      transition: opacity 0.3s;
    }
    .int-cat:hover {
      border-color: var(--border-light);
      transform: translateY(-2px);
      box-shadow: 0 8px 40px var(--shadow-light);
    }
    .int-cat:hover::before { opacity: 1; }
    .int-cat-header {
      display: flex;
      align-items: center;
      gap: 0.85rem;
      margin-bottom: 0.85rem;
    }
    .int-cat-icon {
      width: 44px;
      height: 44px;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      flex-shrink: 0;
    }
    .int-cat-header h3 {
      font-family: 'Plus Jakarta Sans', sans-serif;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--cream);
      letter-spacing: -0.01em;
    }
    .int-cat p {
      color: var(--text-muted);
      font-size: 0.88rem;
      line-height: 1.65;
      margin-bottom: 0.85rem;
    }
    .int-logos {
      display: flex;
      flex-wrap: wrap;
      gap: 0.5rem;
    }
    .int-logo-chip {
      display: inline-flex;
      align-items: center;
      gap: 5px;
      padding: 0.3rem 0.65rem;
      border-radius: 100px;
      font-size: 0.72rem;
      font-weight: 600;
      border: 1px solid var(--border);
      background: var(--surface);
      color: var(--cream);
      white-space: nowrap;
    }
    .int-logo-chip .chip-dot {
      width: 6px;
      height: 6px;
      border-radius: 50%;
    }
    .int-logo-chip .chip-active {
      background: var(--green);
      box-shadow: 0 0 4px var(--green-glow);
    }
    .int-logo-chip .chip-soon {
      background: var(--amber);
    }

    /* editorial integrations */
    .int-head { max-width: 680px; margin-bottom: 2.25rem; }
    .integrations .section-title .serif { font-family: 'Newsreader', Georgia, serif; font-style: italic; font-weight: 400; letter-spacing: -0.01em; color: var(--green-dark); }
    [data-theme="dark"] .integrations .section-title .serif { color: var(--green); }
    @media (prefers-color-scheme: dark) { html:not([data-theme="light"]) .integrations .section-title .serif { color: var(--green); } }
    .int-spotlight {
      display: grid; grid-template-columns: 1fr; gap: 1.5rem;
      background: var(--bg-card); border: 1px solid var(--border); border-radius: 20px;
      padding: 1.75rem; margin-bottom: 1rem; position: relative; overflow: hidden;
    }
    .int-spotlight::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--green); }
    @media (min-width: 780px) { .int-spotlight { grid-template-columns: 1fr 1fr; gap: 2.5rem; align-items: center; padding: 2.25rem; } }
    .int-sp-badge { display: inline-flex; align-items: center; gap: 7px; font-family: 'JetBrains Mono', monospace; font-size: 0.62rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.1em; color: var(--green-dark); margin-bottom: 1rem; }
    [data-theme="dark"] .int-sp-badge { color: var(--green); }
    .int-sp-badge::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px var(--green-glow); }
    .int-sp .word { font-family: 'Plus Jakarta Sans', sans-serif; font-size: 1.7rem; font-weight: 800; letter-spacing: -0.03em; color: var(--cream); margin-bottom: 0.65rem; line-height: 1.1; }
    .int-sp .word .x { color: var(--green-dark); font-family: 'Newsreader', Georgia, serif; font-style: italic; font-weight: 400; }
    [data-theme="dark"] .int-sp .word .x { color: var(--green); }
    .int-sp p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.65; max-width: 44ch; }
    .int-sp-viz { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 1.5rem 1.35rem; }
    .int-cat-tag { font-family: 'JetBrains Mono', monospace; font-size: 0.62rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-dim); margin-bottom: 0.55rem; }
    .int-cat h3 { font-family: 'Plus Jakarta Sans', sans-serif; font-size: 1.15rem; font-weight: 800; color: var(--cream); letter-spacing: -0.02em; margin-bottom: 0.5rem; }
    .int-legend { display: flex; gap: 1.5rem; margin-top: 1.5rem; font-family: 'JetBrains Mono', monospace; font-size: 0.64rem; color: var(--text-dim); }
    .int-legend span { display: inline-flex; align-items: center; gap: 7px; }
    .int-legend .chip-dot { width: 7px; height: 7px; border-radius: 50%; }
    .int-legend .chip-active { background: var(--green); }
    .int-legend .chip-soon { background: var(--amber); }

    /* ===== RESPONSIVE ===== */
    @media (min-width: 640px) {
      .price-cards { grid-template-columns: repeat(2, 1fr); }
    }
    @media (min-width: 768px) {
      .hero {
        grid-template-columns: 1fr 1fr;
        padding: 10rem 1.5rem 5rem;
        gap: 3rem;
      }
      .hero h1 { font-size: 2.8rem; }
      .features-grid { grid-template-columns: repeat(2, 1fr); }
      .int-categories { grid-template-columns: repeat(3, 1fr); }
      .section-title { font-size: 2rem; }
      .stat-item strong { font-size: 2rem; }
    }
    @media (min-width: 1024px) {
      .hero h1 { font-size: 3.2rem; }
      .features-grid { grid-template-columns: repeat(3, 1fr); }
    }

    /* ===== THEME TOGGLE ===== */
    .theme-toggle {
      width: 36px;
      height: 36px;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--text-muted);
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      flex-shrink: 0;
    }
    .theme-toggle:hover {
      border-color: var(--green);
      color: var(--green);
      background: var(--green-glow);
    }
    .theme-toggle svg { width: 18px; height: 18px; }
    .theme-toggle .icon-sun,
    .theme-toggle .icon-moon { display: none; }
    /* Default (light): show moon icon */
    .theme-toggle .icon-sun { display: none; }
    .theme-toggle .icon-moon { display: block; }
    /* Dark mode: show sun icon */
    [data-theme="dark"] .theme-toggle .icon-sun { display: block; }
    [data-theme="dark"] .theme-toggle .icon-moon { display: none; }
    @media (prefers-color-scheme: dark) {
      html:not([data-theme="dark"]):not([data-theme="light"]) .theme-toggle .icon-sun { display: block; }
      html:not([data-theme="dark"]):not([data-theme="light"]) .theme-toggle .icon-moon { display: none; }
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 0.65rem;
    }

    /* Smooth transition for theme switch */
    body, nav, .chat-window, .demo-card, .feature-card, .price-card, .stat-item,
    .chat-header, .chat-msg, .chat-typing, .demo-card-header, .demo-card-footer,
    .demo-chat-preview, .faq-item, footer {
      transition: background-color 0.3s, border-color 0.3s, color 0.3s;
    }