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

  :root {
    --blue: #dc2626;
    --blue-light: #fef2f2;
    --blue-mid: #ef4444;
    --blue-dark: #991b1b;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-400: #9ca3af;
    --gray-600: #4b5563;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --green: #15803d;
    --green-light: #f0fdf4;
    --green-mid: #22c55e;
    --amber: #b45309;
    --amber-light: #fffbeb;
    --red: #dc2626;
    --radius: 10px;
    --radius-lg: 16px;
    --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.10), 0 2px 6px rgba(0,0,0,0.06);
  }

  html { scroll-behavior: smooth; }

  body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    color: var(--gray-800);
    background: #fff;
    line-height: 1.6;
    font-size: 16px;
  }

  a { color: var(--blue); text-decoration: none; }
  a:hover { text-decoration: underline; }

  /* ── NAV ── */
  nav {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--gray-200);
    padding: 0 2rem;
  }
  .nav-inner {
    max-width: 1100px; margin: 0 auto;
    display: flex; align-items: center; justify-content: space-between;
    height: 60px;
  }
  .nav-logo {
    font-size: 20px; font-weight: 700; color: var(--blue-dark);
    letter-spacing: -0.5px;
  }
  .nav-logo span { color: var(--blue-mid); }
  .nav-links { display: flex; gap: 2rem; align-items: center; }
  .nav-links a { font-size: 14px; color: var(--gray-600); font-weight: 500; }
  .nav-links a:hover { color: var(--blue); text-decoration: none; }
  .btn-nav {
    background: var(--blue);
    color: #fff !important;
    padding: 8px 20px;
    border-radius: 8px;
    font-size: 14px !important;
    font-weight: 600 !important;
    transition: background 0.15s;
  }
  .btn-nav:hover { background: var(--blue-dark) !important; text-decoration: none !important; }

  /* ── HERO ── */
  .hero {
    background: linear-gradient(160deg, #eff6ff 0%, #f0fdf4 60%, #fff 100%);
    padding: 80px 2rem 60px;
    text-align: center;
  }
  .hero-badge {
    display: inline-flex; align-items: center; gap: 6px;
    background: var(--blue-light); color: var(--blue);
    border: 1px solid #bfdbfe; border-radius: 99px;
    font-size: 13px; font-weight: 600; padding: 5px 14px;
    margin-bottom: 20px;
  }
  .hero-badge::before { content: "✦"; font-size: 10px; }
  .hero h1 {
    font-size: clamp(32px, 5vw, 56px);
    font-weight: 800; line-height: 1.15;
    color: var(--gray-900);
    letter-spacing: -1px;
    max-width: 800px; margin: 0 auto 20px;
  }
  .hero h1 em { font-style: normal; color: var(--blue); }
  .hero-sub {
    font-size: 18px; color: var(--gray-600);
    max-width: 580px; margin: 0 auto 36px;
    line-height: 1.65;
  }
  .hero-ctas { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
  .btn-primary {
    background: var(--blue); color: #fff;
    padding: 14px 28px; border-radius: 10px;
    font-size: 16px; font-weight: 700;
    display: inline-flex; align-items: center; gap: 8px;
    box-shadow: 0 2px 8px rgba(29,78,216,0.30);
    transition: background 0.15s, transform 0.1s;
  }
  .btn-primary:hover { background: var(--blue-dark); text-decoration: none; transform: translateY(-1px); }
  .btn-secondary {
    background: #fff; color: var(--gray-800);
    padding: 14px 28px; border-radius: 10px;
    font-size: 16px; font-weight: 600;
    border: 1.5px solid var(--gray-200);
    display: inline-flex; align-items: center; gap: 8px;
    transition: border-color 0.15s, transform 0.1s;
  }
  .btn-secondary:hover { border-color: var(--blue-mid); color: var(--blue); text-decoration: none; transform: translateY(-1px); }

  .hero-img {
    margin: 52px auto 0;
    max-width: 900px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.13), 0 2px 8px rgba(0,0,0,0.07);
    border: 1px solid var(--gray-200);
  }
  .screen-mockup {
    background: var(--gray-900); padding: 0;
    font-family: inherit;
  }
  .screen-bar {
    background: #1e293b; padding: 10px 16px;
    display: flex; align-items: center; gap: 8px;
  }
  .screen-dot { width: 10px; height: 10px; border-radius: 50%; }
  .screen-bar .url {
    flex: 1; background: #0f172a; border-radius: 6px;
    padding: 4px 12px; font-size: 12px; color: #64748b; text-align: center;
  }
  .screen-body { background: #0f172a; padding: 24px; display: flex; gap: 20px; min-height: 260px; }
  .panel-left { flex: 2.5; display: flex; flex-direction: column; gap: 12px; }
  .panel-right { flex: 1; background: #1e293b; border-radius: 10px; padding: 16px; display: flex; flex-direction: column; gap: 10px; }
  .panel-title { color: #94a3b8; font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.8px; margin-bottom: 4px; }
  .mock-row { background: #1e293b; border-radius: 8px; padding: 10px 14px; display: flex; align-items: center; gap: 12px; }
  .mock-icon { width: 32px; height: 32px; border-radius: 8px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; font-size: 16px; }
  .mock-icon.blue { background: #1d4ed820; }
  .mock-icon.green { background: #15803d20; }
  .mock-icon.amber { background: #b4530920; }
  .mock-text { display: flex; flex-direction: column; gap: 2px; flex: 1; }
  .mock-line { height: 10px; border-radius: 4px; background: #334155; }
  .mock-line.short { width: 60%; }
  .mock-line.long { width: 90%; }
  .mock-price { color: #22c55e; font-weight: 700; font-size: 15px; }
  .stat-card { background: #1e293b; border-radius: 8px; padding: 12px; }
  .stat-label { color: #64748b; font-size: 11px; margin-bottom: 4px; }
  .stat-val { color: #f8fafc; font-size: 20px; font-weight: 700; }
  .stat-val.green { color: #22c55e; }
  .stat-val.blue { color: #60a5fa; }
  .ai-chip {
    background: linear-gradient(90deg, #1d4ed820, #7c3aed20);
    border: 1px solid #7c3aed40; border-radius: 8px;
    padding: 10px 12px; margin-top: auto;
    color: #a78bfa; font-size: 12px; font-weight: 600;
    display: flex; align-items: center; gap: 6px;
  }

  /* ── SECCIÓN GENÉRICA ── */
  section { padding: 72px 2rem; }
  .container { max-width: 1100px; margin: 0 auto; }
  .section-header { text-align: center; margin-bottom: 52px; }
  .section-tag {
    display: inline-block; background: var(--blue-light); color: var(--blue);
    font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px;
    padding: 4px 12px; border-radius: 99px; margin-bottom: 12px;
  }
  .section-tag.green { background: var(--green-light); color: var(--green); }
  .section-tag.amber { background: var(--amber-light); color: var(--amber); }
  h2 { font-size: clamp(24px, 3vw, 36px); font-weight: 800; color: var(--gray-900); line-height: 1.2; letter-spacing: -0.5px; }
  .section-sub { font-size: 17px; color: var(--gray-600); margin-top: 12px; max-width: 560px; margin-left: auto; margin-right: auto; }

  /* ── FEATURES GRID ── */
  .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
  }
  .feat-card {
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow);
    transition: box-shadow 0.2s, transform 0.2s;
  }
  .feat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
  .feat-card.featured { border-color: #bfdbfe; background: var(--blue-light); }
  .feat-icon {
    width: 48px; height: 48px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 24px; margin-bottom: 16px;
  }
  .feat-icon.blue { background: #dbeafe; }
  .feat-icon.green { background: #dcfce7; }
  .feat-icon.amber { background: #fef3c7; }
  .feat-icon.purple { background: #ede9fe; }
  .feat-icon.teal { background: #ccfbf1; }
  .feat-icon.rose { background: #ffe4e6; }
  .feat-card h3 { font-size: 17px; font-weight: 700; color: var(--gray-900); margin-bottom: 8px; }
  .feat-card p { font-size: 14px; color: var(--gray-600); line-height: 1.6; }
  .feat-tag {
    display: inline-block; margin-top: 14px;
    font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 99px;
  }
  .feat-tag.new { background: #dbeafe; color: #1d4ed8; }

  /* ── IA HIGHLIGHT ── */
  .ia-section { background: var(--gray-50); }
  .ia-inner {
    display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center;
  }
  .ia-text h2 { text-align: left; }
  .ia-text .section-tag { display: block; width: fit-content; }
  .ia-steps { margin-top: 28px; display: flex; flex-direction: column; gap: 16px; }
  .ia-step { display: flex; gap: 14px; align-items: flex-start; }
  .ia-step-num {
    width: 28px; height: 28px; border-radius: 50%; background: var(--blue); color: #fff;
    font-size: 13px; font-weight: 700; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
  }
  .ia-step h4 { font-size: 15px; font-weight: 700; color: var(--gray-800); margin-bottom: 2px; }
  .ia-step p { font-size: 14px; color: var(--gray-600); }

  .ia-visual {
    background: var(--gray-900); border-radius: var(--radius-lg);
    overflow: hidden; box-shadow: var(--shadow-md);
    border: 1px solid #334155;
  }
  .ia-vis-header {
    background: #1e293b; padding: 12px 16px;
    color: #94a3b8; font-size: 12px; font-weight: 600;
    display: flex; align-items: center; gap: 8px;
  }
  .ia-vis-header span { color: #38bdf8; }
  .ia-vis-body { padding: 20px; display: flex; flex-direction: column; gap: 14px; }
  .ia-vis-drop {
    border: 2px dashed #334155; border-radius: 10px;
    padding: 24px; text-align: center; color: #64748b; font-size: 14px;
  }
  .ia-vis-drop strong { color: #94a3b8; display: block; margin-bottom: 4px; }
  .ia-vis-result {
    background: #1e293b; border-radius: 10px; padding: 14px 16px;
    border-left: 3px solid #22c55e;
  }
  .ia-vis-result-title { color: #22c55e; font-size: 12px; font-weight: 700; margin-bottom: 8px; }
  .ia-vis-field { display: flex; justify-content: space-between; font-size: 13px; padding: 3px 0; }
  .ia-vis-field .lbl { color: #64748b; }
  .ia-vis-field .val { color: #e2e8f0; font-weight: 500; }

  /* ── MÓVIL ── */
  .mobile-section { background: #fff; }
  .mobile-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
  .mobile-phones { display: flex; gap: 20px; justify-content: center; }
  .phone {
    width: 180px; border-radius: 28px; overflow: hidden;
    box-shadow: var(--shadow-md); border: 6px solid var(--gray-900);
    background: var(--gray-900);
  }
  .phone-screen { background: #0f172a; padding: 12px 10px; min-height: 340px; }
  .phone-top { color: #94a3b8; font-size: 10px; text-align: center; padding-bottom: 10px; border-bottom: 1px solid #1e293b; margin-bottom: 10px; font-weight: 600; }
  .phone-price-big { text-align: center; padding: 20px 0 10px; }
  .phone-price-big .amount { color: #22c55e; font-size: 32px; font-weight: 800; }
  .phone-price-big .label { color: #64748b; font-size: 11px; }
  .phone-item { background: #1e293b; border-radius: 8px; padding: 8px 10px; margin-bottom: 6px; }
  .phone-item .pname { color: #e2e8f0; font-size: 11px; font-weight: 600; }
  .phone-item .pprice { color: #22c55e; font-size: 13px; font-weight: 700; }
  .phone-item .pcode { color: #475569; font-size: 10px; }
  .scan-box {
    border: 2px solid #3b82f6; border-radius: 8px; margin: 16px 6px;
    padding: 20px 0; text-align: center; position: relative;
  }
  .scan-line { position: absolute; top: 50%; left: 10%; right: 10%; height: 2px; background: #ef4444; border-radius: 1px; }
  .scan-label { color: #64748b; font-size: 9px; margin-top: 6px; }
  .phone2 { margin-top: 40px; }

  /* ── AFIP ── */
  .afip-section { background: var(--gray-50); }
  .afip-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-top: 20px; }
  .afip-card {
    background: #fff; border-radius: var(--radius); border: 1px solid var(--gray-200);
    padding: 24px; text-align: center; box-shadow: var(--shadow);
  }
  .afip-card .icon { font-size: 32px; margin-bottom: 12px; }
  .afip-card h4 { font-size: 15px; font-weight: 700; color: var(--gray-900); margin-bottom: 6px; }
  .afip-card p { font-size: 13px; color: var(--gray-600); }

  /* ── STATS ── */
  .stats-section { background: var(--blue); padding: 60px 2rem; text-align: center; }
  .stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 32px; max-width: 900px; margin: 0 auto; }
  .stat { color: #fff; }
  .stat .num { font-size: 42px; font-weight: 800; line-height: 1; }
  .stat .desc { font-size: 14px; color: #bfdbfe; margin-top: 6px; }

  /* ── MULTI-PC ── */
  .multipc-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
  .network-diagram {
    background: var(--gray-50); border-radius: var(--radius-lg);
    padding: 32px; border: 1px solid var(--gray-200);
  }
  .net-server {
    background: var(--blue); color: #fff; border-radius: var(--radius);
    padding: 16px 20px; text-align: center; margin-bottom: 24px;
    font-weight: 700; font-size: 14px; position: relative;
  }
  .net-server::after {
    content: ''; position: absolute; bottom: -24px; left: 50%;
    transform: translateX(-50%); width: 2px; height: 20px; background: var(--gray-200);
  }
  .net-clients { display: flex; gap: 12px; justify-content: center; }
  .net-client {
    background: #fff; border: 1.5px solid var(--gray-200); border-radius: var(--radius);
    padding: 12px 16px; text-align: center; flex: 1;
    font-size: 13px; font-weight: 600; color: var(--gray-700);
    position: relative;
  }
  .net-client::before {
    content: ''; position: absolute; top: -24px; left: 50%;
    transform: translateX(-50%); width: 2px; height: 20px; background: var(--gray-200);
  }
  .net-client .sub { font-size: 11px; color: var(--gray-400); font-weight: 400; margin-top: 2px; }
  .net-badge {
    background: var(--green-light); color: var(--green);
    font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 99px; margin-top: 6px;
    display: inline-block;
  }

  /* ── REQUISITOS ── */
  .req-section { background: var(--gray-50); }
  .req-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; }
  .req-card {
    background: #fff; border: 1px solid var(--gray-200); border-radius: var(--radius);
    padding: 20px; display: flex; gap: 12px; align-items: flex-start; box-shadow: var(--shadow);
  }
  .req-icon { font-size: 24px; flex-shrink: 0; }
  .req-card h4 { font-size: 14px; font-weight: 700; color: var(--gray-800); margin-bottom: 4px; }
  .req-card p { font-size: 13px; color: var(--gray-600); }

  /* ── CTA FINAL ── */
  .cta-section { text-align: center; padding: 80px 2rem; background: linear-gradient(160deg, var(--blue-light) 0%, #fff 100%); }
  .cta-section h2 { margin-bottom: 16px; }
  .cta-section p { font-size: 17px; color: var(--gray-600); margin-bottom: 32px; }

  /* ── FOOTER ── */
  footer {
    background: var(--gray-900); color: #94a3b8;
    padding: 40px 2rem; text-align: center; font-size: 14px;
  }
  footer strong { color: #f1f5f9; }
  footer .footer-links { display: flex; gap: 24px; justify-content: center; margin-top: 12px; }
  footer .footer-links a { color: #64748b; font-size: 13px; }
  footer .footer-links a:hover { color: #94a3b8; }

  /* ── RESPONSIVE ── */
  @media (max-width: 768px) {
    .nav-links { display: none; }
    .ia-inner, .mobile-inner, .multipc-inner { grid-template-columns: 1fr; }
    .mobile-phones { gap: 12px; }
    .phone { width: 140px; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
  }
  @media (max-width: 480px) {
    .hero h1 { font-size: 28px; }
    .hero-ctas { flex-direction: column; align-items: center; }
  }
  /* hamburger nav */
  .nav-toggle { display:none; background:none; border:none; font-size:22px; cursor:pointer; color:var(--gray-700); padding:4px 8px; }
  @media (max-width: 768px) {
    .nav-toggle { display:block; }
    .nav-links { display:none; flex-direction:column; position:absolute; top:60px; left:0; right:0;
      background:#fff; padding:12px 20px; box-shadow:0 4px 20px rgba(0,0,0,.1); gap:0; z-index:9999; }
    .nav-links.open { display:flex; }
    .nav-links a { padding:10px 0; border-bottom:1px solid #f1f5f9; font-size:15px; }
    .nav-links a:last-child { border-bottom:none; }
    .nav-inner { position:relative; }
  }

  /* nav active link */
  .nav-links .nav-active { color: var(--blue) !important; font-weight: 700; }