:root {
      --bg: #0A0A0B;
      --surface: #121215;
      --surface-2: #1A1A1F;
      --surface-3: #25252C;
      --border: rgba(255, 255, 255, 0.06);
      --border-hover: rgba(255, 255, 255, 0.14);
      --text: #F5F5F7;
      --text-muted: #A1A1AA;
      --text-dim: #52525B;
      --accent: #3B82F6;
      --accent-violet: #A855F7;
      --accent-cyan: #22D3EE;
      --grad: linear-gradient(135deg, #A855F7 0%, #3B82F6 50%, #22D3EE 100%);
      --sans: 'Satoshi', 'Inter', system-ui, -apple-system, sans-serif;
      --mono: 'JetBrains Mono', 'Courier New', monospace;
    }
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }
    html { scroll-behavior: smooth; }
    body {
      font-family: var(--sans);
      background: var(--bg);
      color: var(--text);
      line-height: 1.5;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; }
    .wrap { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
    @media (min-width: 640px) { .wrap { padding: 0 28px; } }
    .grad-text {
      background: var(--grad);
      -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    }

    /* NAV */
    nav.top {
      position: fixed; top: 12px; left: 50%; transform: translateX(-50%);
      z-index: 100; width: calc(100% - 24px); max-width: 1100px;
      background: rgba(10,10,11,0.78);
      backdrop-filter: blur(20px) saturate(140%); -webkit-backdrop-filter: blur(20px) saturate(140%);
      border: 1px solid var(--border); border-radius: 100px;
    }
    nav.top .inner { display: flex; align-items: center; justify-content: space-between; padding: 8px 8px 8px 18px; gap: 12px; }
    nav.top .brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 15px; letter-spacing: -0.02em; }
    nav.top .brand .dot { width: 8px; height: 8px; background: var(--grad); border-radius: 50%; box-shadow: 0 0 16px rgba(168,85,247,0.6); }
    nav.top .cta {
      background: var(--text); color: var(--bg); font-size: 13px; font-weight: 600;
      padding: 9px 16px; border-radius: 100px; white-space: nowrap;
      transition: transform 0.2s, box-shadow 0.2s;
    }
    nav.top .cta:hover { transform: translateY(-1px); box-shadow: 0 8px 24px -8px rgba(255,255,255,0.3); }

    /* HERO */
    section.hero { position: relative; padding: 130px 0 70px; overflow: hidden; }
    @media (min-width: 1024px) { section.hero { padding: 160px 0 90px; } }
    .hero-glow {
      position: absolute; width: min(900px, 120vw); height: 600px; top: -220px; left: 50%;
      transform: translateX(-50%);
      background: radial-gradient(ellipse, rgba(168,85,247,0.20) 0%, rgba(59,130,246,0.08) 40%, transparent 70%);
      pointer-events: none; filter: blur(40px);
    }
    .breadcrumb { position: relative; z-index: 2; font-family: var(--mono); font-size: 12px; color: var(--text-dim); margin-bottom: 22px; }
    .breadcrumb a:hover { color: var(--text-muted); }
    .breadcrumb span { margin: 0 6px; }
    .hero-content { position: relative; z-index: 2; max-width: 760px; }
    .eyebrow {
      display: inline-flex; align-items: center; gap: 7px; padding: 5px 12px 5px 9px;
      background: var(--surface); border: 1px solid var(--border); border-radius: 100px;
      font-size: 11px; color: var(--text-muted); margin-bottom: 22px;
      font-family: var(--mono); letter-spacing: 0.08em; text-transform: uppercase;
    }
    .eyebrow .dot { width: 5px; height: 5px; border-radius: 50%; background: var(--grad); }
    h1 { font-size: clamp(36px, 7vw, 64px); line-height: 1.04; font-weight: 900; letter-spacing: -0.04em; margin-bottom: 22px; }
    .hero p.lede { font-size: 17px; line-height: 1.6; color: var(--text-muted); max-width: 60ch; margin-bottom: 30px; }
    @media (min-width: 640px) { .hero p.lede { font-size: 19px; } }
    .hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; }
    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      padding: 14px 24px; border-radius: 100px; font-size: 15px; font-weight: 600;
      border: 1px solid transparent; cursor: pointer; min-height: 48px;
      transition: transform 0.2s, box-shadow 0.2s, background 0.2s, border-color 0.2s;
    }
    .btn:active { transform: scale(0.97); }
    .btn-primary { background: var(--text); color: var(--bg); }
    .btn-primary:hover { transform: translateY(-1px); box-shadow: 0 12px 32px -12px rgba(255,255,255,0.4); }
    .btn-ghost { background: transparent; color: var(--text); border-color: var(--border-hover); }
    .btn-ghost:hover { background: var(--surface); border-color: rgba(255,255,255,0.2); }

    .trust { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 34px; padding-top: 26px; border-top: 1px solid var(--border); position: relative; z-index: 2; }
    .trust .item { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-muted); }
    .trust .tdot { width: 6px; height: 6px; border-radius: 50%; background: var(--grad); }

    /* SECTIONS */
    section.block { padding: 64px 0; }
    @media (min-width: 1024px) { section.block { padding: 88px 0; } }
    .block h2 { font-size: clamp(26px, 5vw, 40px); font-weight: 900; letter-spacing: -0.03em; line-height: 1.1; margin-bottom: 16px; max-width: 22ch; }
    .block .intro { font-size: 16px; color: var(--text-muted); max-width: 62ch; line-height: 1.65; }
    @media (min-width: 640px) { .block .intro { font-size: 17px; } }

    .grid { display: grid; grid-template-columns: 1fr; gap: 14px; margin-top: 36px; }
    @media (min-width: 720px) { .grid { grid-template-columns: repeat(2, 1fr); gap: 16px; } }
    .card { background: var(--surface); border: 1px solid var(--border); border-radius: 18px; padding: 24px; transition: border-color 0.3s, transform 0.3s, background 0.3s; }
    .card:hover { border-color: var(--border-hover); transform: translateY(-3px); background: var(--surface-2); }
    .card .ic { width: 38px; height: 38px; border-radius: 10px; background: var(--surface-3); display: flex; align-items: center; justify-content: center; margin-bottom: 14px; color: var(--accent-violet); }
    .card .ic svg { width: 20px; height: 20px; }
    .card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; letter-spacing: -0.01em; }
    .card p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

    /* STEPS */
    .steps { display: grid; grid-template-columns: 1fr; gap: 12px; margin-top: 36px; counter-reset: step; }
    @media (min-width: 720px) { .steps { grid-template-columns: repeat(2, 1fr); } }
    @media (min-width: 1024px) { .steps { grid-template-columns: repeat(4, 1fr); } }
    .step { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 22px; }
    .step .n { font-family: var(--mono); font-size: 13px; color: var(--accent-cyan); margin-bottom: 12px; }
    .step h3 { font-size: 15px; font-weight: 700; margin-bottom: 6px; }
    .step p { font-size: 13.5px; color: var(--text-muted); line-height: 1.55; }

    /* DEMO */
    section.demo { padding: 64px 0; }
    .demo-box {
      background: linear-gradient(135deg, rgba(168,85,247,0.08), rgba(34,211,238,0.04));
      border: 1px solid rgba(168,85,247,0.25); border-radius: 24px;
      padding: 36px 24px; text-align: center;
    }
    @media (min-width: 640px) { .demo-box { padding: 52px 40px; } }
    .demo-box .tag { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent-cyan); }
    .demo-box h2 { font-size: clamp(24px, 4vw, 34px); font-weight: 900; letter-spacing: -0.03em; margin: 12px 0 14px; }
    .demo-box p { font-size: 15px; color: var(--text-muted); max-width: 52ch; margin: 0 auto 26px; line-height: 1.6; }
    .demo-stage { display: flex; flex-direction: column; align-items: center; gap: 16px; }
    .demo-frame { position: relative; width: 100%; max-width: 360px; aspect-ratio: 9/18; border-radius: 28px; overflow: hidden; border: 1px solid var(--border-hover); background: #050506; box-shadow: 0 40px 80px -24px rgba(0,0,0,0.6); }
    .demo-frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; display: block; z-index: 1; }
    .df-placeholder { position: absolute; inset: 0; z-index: 3; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 16px; cursor: pointer; text-align: center; padding: 24px; background: radial-gradient(ellipse at 50% 30%, rgba(168,85,247,0.20), transparent 70%), linear-gradient(160deg, #1a1a20, #0b0b0e); }
    .df-placeholder.hide { display: none; }
    .df-play { width: 64px; height: 64px; border-radius: 50%; background: var(--grad); display: flex; align-items: center; justify-content: center; box-shadow: 0 0 32px rgba(168,85,247,0.5); transition: transform 0.2s; }
    .df-placeholder:hover .df-play { transform: scale(1.06); }
    .df-play svg { width: 26px; height: 26px; fill: #fff; margin-left: 3px; }
    .df-ph-title { font-weight: 700; font-size: 16px; }
    .df-ph-sub { font-family: var(--mono); font-size: 11px; color: var(--text-muted); letter-spacing: 0.1em; text-transform: uppercase; margin-top: 4px; }
    .df-loading { position: absolute; inset: 0; z-index: 2; display: none; align-items: center; justify-content: center; color: var(--text-muted); font-family: var(--mono); font-size: 12px; background: #050506; }
    .df-loading.show { display: flex; }
    /* Tela cheia na própria página (sem sair) */
    .demo-frame.is-fullscreen { position: fixed; inset: 0; z-index: 9999; width: 100vw; height: 100vh; height: 100dvh; max-width: none; aspect-ratio: auto; border: 0; border-radius: 0; box-shadow: none; }
    .df-fs-close { position: absolute; top: 14px; right: 14px; z-index: 10; display: none; width: 40px; height: 40px; border-radius: 50%; border: 1px solid rgba(255,255,255,0.25); background: rgba(5,5,7,0.7); color: #fff; font-size: 24px; line-height: 1; cursor: pointer; backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
    .demo-frame.is-fullscreen .df-fs-close { display: flex; align-items: center; justify-content: center; }

    /* OTHER MECHANICS */
    .mech-links { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-top: 32px; }
    @media (min-width: 720px) { .mech-links { grid-template-columns: repeat(4, 1fr); } }
    .mech-link {
      display: flex; align-items: center; gap: 8px; padding: 14px 16px;
      background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
      font-size: 14px; font-weight: 600; transition: border-color 0.25s, transform 0.25s, background 0.25s;
    }
    .mech-link:hover { border-color: var(--border-hover); background: var(--surface-2); transform: translateY(-2px); }
    .mech-link .md { width: 7px; height: 7px; border-radius: 50%; background: var(--grad); flex-shrink: 0; }

    /* FINAL CTA */
    section.final { padding: 24px 0 80px; }
    .cta-box {
      position: relative; overflow: hidden; text-align: center;
      background: var(--surface); border: 1px solid var(--border); border-radius: 28px;
      padding: 48px 24px;
    }
    @media (min-width: 640px) { .cta-box { padding: 64px 40px; } }
    .cta-box::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse 60% 80% at 50% 0%, rgba(168,85,247,0.12), transparent 70%); pointer-events: none; }
    .cta-box > * { position: relative; z-index: 2; }
    .cta-box h2 { font-size: clamp(26px, 5vw, 42px); font-weight: 900; letter-spacing: -0.03em; margin-bottom: 14px; }
    .cta-box p { font-size: 16px; color: var(--text-muted); margin-bottom: 30px; max-width: 48ch; margin-left: auto; margin-right: auto; }

    /* FAQ */
    .faq-list { margin-top: 32px; display: flex; flex-direction: column; gap: 10px; }
    details.q { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 4px 18px; }
    details.q summary { cursor: pointer; list-style: none; padding: 16px 0; font-weight: 600; font-size: 15px; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
    details.q summary::-webkit-details-marker { display: none; }
    details.q summary .sign { color: var(--accent-violet); font-weight: 400; font-size: 20px; transition: transform 0.2s; }
    details.q[open] summary .sign { transform: rotate(45deg); }
    details.q .ans { padding: 0 0 18px; color: var(--text-muted); font-size: 14.5px; line-height: 1.65; }

    /* FOOTER */
    footer.foot { border-top: 1px solid var(--border); padding: 40px 0; }
    footer.foot .brand { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; }
    footer.foot .brand .dot { width: 8px; height: 8px; background: var(--grad); border-radius: 50%; }
    footer.foot .lead-txt { color: var(--text-muted); font-size: 13.5px; margin-top: 10px; max-width: 46ch; line-height: 1.6; }
    footer.foot .fbot { margin-top: 28px; font-family: var(--mono); font-size: 11px; color: var(--text-dim); }