@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

  :root{
    --ink:#0F2A2E;
    --navy:#12313A;
    --paper:#F3EFE6;
    --paper-2:#EAE3D3;
    --ledger:#2E5E4E;
    --ledger-light:#3F7A63;
    --coin:#C9A24B;
    --line: rgba(15,42,46,0.14);
    --white:#FCFAF4;
  }

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

  html{scroll-behavior:smooth;}

  body{
    background:var(--paper);
    color:var(--ink);
    font-family:'IBM Plex Sans', sans-serif;
    line-height:1.5;
    -webkit-font-smoothing:antialiased;
  }

  h1,h2,h3,.display{
    font-family:'Fraunces', serif;
    font-weight:600;
    letter-spacing:-0.01em;
    line-height:1.05;
  }

  .mono{
    font-family:'IBM Plex Mono', monospace;
  }

  a{color:inherit; text-decoration:none;}

  .wrap{
    max-width:1180px;
    margin:0 auto;
    padding:0 32px;
  }

  /* ===== Ledger rule motif ===== */
  .rule{
    border-top:1px solid var(--line);
  }

  .eyebrow{
    font-family:'IBM Plex Mono', monospace;
    font-size:12.5px;
    letter-spacing:0.14em;
    text-transform:uppercase;
    color:var(--ledger);
    display:flex;
    align-items:center;
    gap:10px;
  }
  .eyebrow::before{
    content:"";
    width:16px; height:1px;
    background:var(--ledger);
    display:inline-block;
  }

  /* ===== Header ===== */
  header{
    position:sticky; top:0; z-index:50;
    background:rgba(243,239,230,0.92);
    backdrop-filter:blur(8px);
    border-bottom:1px solid var(--line);
  }
  .nav{
    display:flex; align-items:center; justify-content:space-between;
    padding:18px 32px;
    max-width:1180px; margin:0 auto;
  }
  .logo{
    font-family:'Fraunces', serif;
    font-weight:700;
    font-size:20px;
    display:flex; align-items:baseline; gap:2px;
  }
  .logo .dot{color:var(--ledger); font-family:'IBM Plex Mono', monospace;}
  .nav-links{
    display:flex; gap:34px; align-items:center;
    font-size:14.5px;
  }
  .nav-links a{opacity:0.8; transition:opacity .15s;}
  .nav-links a:hover{opacity:1;}
  .nav-links a.is-active{opacity:1; color:var(--ledger); font-weight:500;}

  .page-hero{
    padding:64px 0 20px;
  }
  .page-hero .eyebrow{margin-bottom:14px;}
  .page-hero h1{font-size:clamp(32px,4vw,46px);}
  .btn{
    display:inline-flex; align-items:center; justify-content:center;
    padding:11px 22px;
    border-radius:3px;
    font-size:14.5px;
    font-weight:500;
    cursor:pointer;
    border:1px solid transparent;
    transition:all .15s ease;
  }
  .btn-primary{
    background:var(--ledger);
    color:var(--white);
  }
  .btn-primary:hover{background:var(--ledger-light);}
  .btn-ghost{
    border-color:var(--ink);
    color:var(--ink);
  }
  .btn-ghost:hover{background:var(--ink); color:var(--white);}

  /* ===== Hero ===== */
  .hero{
    padding:100px 0 80px;
    position:relative;
    overflow:hidden;
  }
  .hero-grid{
    display:grid;
    grid-template-columns:1.15fr 0.85fr;
    gap:60px;
    align-items:center;
  }
  .hero h1{
    font-size:clamp(38px, 5vw, 60px);
    margin:20px 0 22px;
  }
  .hero h1 em{
    font-style:italic;
    color:var(--ledger);
  }
  .hero p.lead{
    font-size:18px;
    max-width:480px;
    color:rgba(15,42,46,0.75);
    margin-bottom:34px;
  }
  .hero-cta{
    display:flex; gap:14px; flex-wrap:wrap;
    margin-bottom:28px;
  }
  .hero-note{
    font-size:13px;
    font-family:'IBM Plex Mono', monospace;
    color:rgba(15,42,46,0.55);
  }

  /* Invoice mock */
  .invoice-card{
    background:var(--white);
    border:1px solid var(--line);
    border-radius:6px;
    box-shadow:0 30px 60px -30px rgba(15,42,46,0.35);
    padding:28px;
    transform:rotate(1.2deg);
    position:relative;
  }
  .invoice-card::before{
    content:"FACTURA";
    position:absolute;
    top:22px; right:-38px;
    background:var(--coin);
    color:var(--navy);
    font-family:'IBM Plex Mono',monospace;
    font-size:11px;
    letter-spacing:0.1em;
    padding:4px 40px;
    transform:rotate(90deg);
    font-weight:600;
  }
  .invoice-head{
    display:flex; justify-content:space-between; align-items:flex-start;
    padding-bottom:16px; margin-bottom:16px;
    border-bottom:1px dashed var(--line);
  }
  .invoice-head .num{font-family:'IBM Plex Mono',monospace; font-size:13px; color:var(--ledger); font-weight:500;}
  .invoice-head .status{
    font-family:'IBM Plex Mono',monospace;
    font-size:11px;
    background:rgba(46,94,78,0.12);
    color:var(--ledger);
    padding:4px 10px;
    border-radius:20px;
  }
  .invoice-row{
    display:flex; justify-content:space-between;
    padding:9px 0;
    font-size:14px;
    border-bottom:1px solid rgba(15,42,46,0.06);
  }
  .invoice-row span:first-child{color:rgba(15,42,46,0.65);}
  .invoice-total{
    display:flex; justify-content:space-between;
    padding-top:16px; margin-top:6px;
    font-family:'Fraunces',serif;
    font-size:22px;
    font-weight:600;
  }

  /* ===== Logos strip ===== */
  .logos{
    padding:34px 0;
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
  }
  .logos .wrap{
    display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:20px;
  }
  .logos .label{
    font-family:'IBM Plex Mono',monospace; font-size:12px; color:rgba(15,42,46,0.5); letter-spacing:0.08em;
  }
  .logos .items{display:flex; gap:38px; flex-wrap:wrap; font-family:'Fraunces',serif; font-weight:600; font-size:17px; opacity:0.55;}

  /* ===== Section shared ===== */
  section{padding:100px 0;}
  .section-head{
    max-width:640px;
    margin-bottom:56px;
  }
  .section-head h2{
    font-size:clamp(28px,3.4vw,40px);
    margin-top:14px;
  }
  .section-head p{
    color:rgba(15,42,46,0.7);
    font-size:16.5px;
    margin-top:14px;
  }

  /* ===== Features — ledger list ===== */
  .ledger-list{
    border-top:1px solid var(--line);
  }
  .ledger-item{
    display:grid;
    grid-template-columns:120px 1fr 1.3fr;
    gap:32px;
    padding:34px 0;
    border-bottom:1px solid var(--line);
    align-items:start;
  }
  .ledger-item .idx{
    font-family:'IBM Plex Mono',monospace;
    font-size:13px;
    color:var(--coin);
    padding-top:4px;
  }
  .ledger-item h3{
    font-size:21px;
    font-weight:600;
  }
  .ledger-item p{
    color:rgba(15,42,46,0.7);
    font-size:15px;
  }

  /* ===== Stats band ===== */
  .stats{
    background:var(--navy);
    color:var(--white);
    padding:70px 0;
  }
  .stats-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:20px;
  }
  .stat{
    border-left:1px solid rgba(255,255,255,0.15);
    padding-left:20px;
  }
  .stat .num{
    font-family:'Fraunces',serif;
    font-size:38px;
    font-weight:600;
    color:var(--coin);
  }
  .stat .lbl{
    font-family:'IBM Plex Mono',monospace;
    font-size:12.5px;
    opacity:0.7;
    margin-top:6px;
  }

  /* ===== Pricing ===== */
  .pricing-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:24px;
  }
  .plan{
    background:var(--white);
    border:1px solid var(--line);
    border-radius:6px;
    padding:34px 28px;
    display:flex; flex-direction:column;
    position:relative;
  }
  .plan.featured{
    border-color:var(--ledger);
    box-shadow:0 24px 50px -28px rgba(46,94,78,0.4);
  }
  .plan.featured .tag{
    position:absolute; top:-13px; left:28px;
    background:var(--ledger);
    color:var(--white);
    font-family:'IBM Plex Mono',monospace;
    font-size:11px;
    padding:5px 12px;
    border-radius:20px;
    letter-spacing:0.05em;
  }
  .plan h3{font-size:18px; font-weight:600; margin-bottom:6px;}
  .plan .price{
    font-family:'Fraunces',serif;
    font-size:42px;
    font-weight:600;
    margin:14px 0 4px;
  }
  .plan .price sup{font-size:16px; font-family:'IBM Plex Sans',sans-serif; font-weight:500;}
  .plan .per{font-size:13px; color:rgba(15,42,46,0.55); margin-bottom:24px;}
  .plan ul{list-style:none; margin-bottom:28px; flex-grow:1;}
  .plan li{
    font-size:14.5px;
    padding:9px 0;
    border-top:1px solid rgba(15,42,46,0.08);
    display:flex; gap:10px;
  }
  .plan li::before{content:"—"; color:var(--ledger); flex-shrink:0;}

  /* ===== Download ===== */
  .download{
    background:var(--ledger);
    color:var(--white);
    border-radius:8px;
    padding:64px 56px;
    display:grid;
    grid-template-columns:1.3fr 1fr;
    gap:40px;
    align-items:center;
  }
  .download h2{color:var(--white); font-size:clamp(26px,3vw,36px);}
  .download p{opacity:0.85; margin-top:14px; max-width:440px;}
  .download-platforms{
    display:flex; flex-direction:column; gap:12px;
  }
  .platform-btn{
    background:rgba(255,255,255,0.1);
    border:1px solid rgba(255,255,255,0.28);
    border-radius:5px;
    padding:14px 18px;
    display:flex; justify-content:space-between; align-items:center;
    font-size:14.5px;
    transition:background .15s;
    cursor:pointer;
  }
  .platform-btn:hover{background:rgba(255,255,255,0.18);}
  .platform-btn .os{font-weight:500;}
  .platform-btn .ver{font-family:'IBM Plex Mono',monospace; font-size:12px; opacity:0.7;}

  /* ===== Testimonial ===== */
  .testimonial{
    text-align:left;
    max-width:760px;
  }
  .testimonial blockquote{
    font-family:'Fraunces',serif;
    font-size:clamp(22px,2.6vw,30px);
    font-weight:500;
    line-height:1.35;
    color:var(--navy);
  }
  .testimonial .attr{
    margin-top:24px;
    font-family:'IBM Plex Mono',monospace;
    font-size:13px;
    color:rgba(15,42,46,0.6);
  }

  /* ===== FAQ ===== */
  .faq-item{
    border-bottom:1px solid var(--line);
    padding:24px 0;
  }
  .faq-item summary{
    cursor:pointer;
    font-weight:600;
    font-size:16.5px;
    display:flex; justify-content:space-between; align-items:center;
    list-style:none;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{
    content:"+";
    font-family:'IBM Plex Mono',monospace;
    font-size:20px;
    color:var(--ledger);
    transition:transform .2s;
  }
  .faq-item[open] summary::after{transform:rotate(45deg);}
  .faq-item p{
    margin-top:14px;
    color:rgba(15,42,46,0.7);
    font-size:15px;
    max-width:640px;
  }

  /* ===== Contact ===== */
  .contact-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:60px;
  }
  .contact-info .item{
    padding:18px 0;
    border-top:1px solid var(--line);
  }
  .contact-info .item:last-child{border-bottom:1px solid var(--line);}
  .contact-info .lbl{
    font-family:'IBM Plex Mono',monospace;
    font-size:12px;
    color:var(--ledger);
    letter-spacing:0.06em;
  }
  .contact-info .val{font-size:16px; margin-top:6px;}

  form{display:flex; flex-direction:column; gap:16px;}
  .field label{
    display:block;
    font-family:'IBM Plex Mono',monospace;
    font-size:12px;
    color:var(--ledger);
    margin-bottom:6px;
    letter-spacing:0.05em;
  }
  .field input, .field textarea{
    width:100%;
    background:var(--white);
    border:1px solid var(--line);
    border-radius:4px;
    padding:12px 14px;
    font-family:'IBM Plex Sans',sans-serif;
    font-size:14.5px;
    color:var(--ink);
  }
  .field input:focus, .field textarea:focus{
    outline:2px solid var(--ledger);
    outline-offset:1px;
  }
  .field textarea{resize:vertical; min-height:100px;}

  /* ===== Footer ===== */
  footer{
    background:var(--navy);
    color:rgba(255,255,255,0.65);
    padding:56px 0 28px;
  }
  .footer-top{
    display:flex; justify-content:space-between; flex-wrap:wrap; gap:40px;
    padding-bottom:40px;
    border-bottom:1px solid rgba(255,255,255,0.12);
    margin-bottom:24px;
  }
  .footer-top .logo{color:var(--white);}
  .footer-cols{display:flex; gap:60px; flex-wrap:wrap;}
  .footer-col h4{
    font-family:'IBM Plex Mono',monospace;
    font-size:12px;
    letter-spacing:0.08em;
    color:var(--coin);
    margin-bottom:14px;
    text-transform:uppercase;
  }
  .footer-col a{
    display:block;
    font-size:14px;
    padding:5px 0;
    color:rgba(255,255,255,0.65);
  }
  .footer-col a:hover{color:var(--white);}
  .footer-bottom{
    display:flex; justify-content:space-between; font-size:12.5px; flex-wrap:wrap; gap:10px;
  }

  /* ===== Responsive ===== */
  @media (max-width: 860px){
    .nav-links{display:none;}
    .hero-grid{grid-template-columns:1fr;}
    .invoice-card{transform:none; margin-top:20px;}
    .stats-grid{grid-template-columns:repeat(2,1fr); row-gap:30px;}
    .pricing-grid{grid-template-columns:1fr;}
    .ledger-item{grid-template-columns:1fr; gap:8px;}
    .download{grid-template-columns:1fr; padding:40px 28px;}
    .contact-grid{grid-template-columns:1fr;}
    .footer-top{flex-direction:column;}
  }

  @media (prefers-reduced-motion: reduce){
    html{scroll-behavior:auto;}
    *{transition:none !important;}
  }