:root{
    --paper:#EFE8DA; --paper-warm:#E8DFCD; --paper-deep:#DCD1B7;
    --ink:#0E1530; --ink-soft:#1B244A; --ink-mute:#4A537A;
    --violet:#3F31C9; --violet-deep:#2B1FA0;
    --orange:#E8612E; --teal:#3A8585;
    --line:rgba(14,21,48,.18); --line-soft:rgba(14,21,48,.10);
    --serif:'Archivo',system-ui,sans-serif;
    --display:'Archivo',system-ui,sans-serif;
    --narrow:'Archivo Narrow','Archivo',sans-serif;
    --mono:'JetBrains Mono',ui-monospace,Menlo,monospace;
    --max:1320px; --gut:clamp(20px,4vw,56px);
  }
  *,*::before,*::after{ box-sizing:border-box; }
  html,body{ margin:0; padding:0; }
  html{ scroll-behavior:smooth; }
  body{
    font-family:var(--serif);
    background:var(--paper);
    color:var(--ink);
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
    line-height:1.45;
    background-image:
      radial-gradient(1200px 600px at 80% -10%,rgba(63,49,201,.05),transparent 60%),
      radial-gradient(900px 500px at -10% 30%,rgba(232,97,46,.04),transparent 60%);
  }
  body::before{
    content:""; position:fixed; inset:0;
    background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' seed='3'/><feColorMatrix values='0 0 0 0 0.05  0 0 0 0 0.08  0 0 0 0 0.18  0 0 0 0 0.06 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
    opacity:.55; pointer-events:none; mix-blend-mode:multiply; z-index:1;
  }
  a{ color:inherit; }
  .wrap{ max-width:var(--max); margin:0 auto; padding:0 var(--gut); position:relative; z-index:2; }

  /* nav */
  .nav{
    position:sticky; top:0; z-index:50;
    backdrop-filter:blur(10px);
    background:rgba(239,232,218,.78);
    border-bottom:1px solid var(--line-soft);
  }
  .nav-inner{
    display:flex; align-items:center; justify-content:space-between;
    padding:14px var(--gut); max-width:var(--max); margin:0 auto; gap:24px;
  }
  .brand{ display:flex; align-items:center; gap:12px; text-decoration:none; color:var(--ink); }
  .brand-mark{ width:30px; height:30px; position:relative; }
  .brand-mark::before, .brand-mark::after{ content:""; position:absolute; width:14px; height:14px; border:2.5px solid var(--ink); }
  .brand-mark::before{ top:0; left:0; border-right:0; border-bottom:0; }
  .brand-mark::after{ bottom:0; right:0; border-left:0; border-top:0; }
  .brand-name{ font-family:var(--display); font-weight:800; font-size:15px; line-height:1; }
  .brand-name small{ display:block; font-family:var(--narrow); font-weight:500; font-size:10px; letter-spacing:.16em; color:var(--ink-mute); margin-top:4px; text-transform:uppercase; }
  .back{
    display:inline-flex; align-items:center; gap:.6em;
    background:var(--ink); color:var(--paper);
    padding:12px 18px; font-family:var(--narrow);
    text-transform:uppercase; letter-spacing:.12em;
    font-size:12px; font-weight:700;
    border-radius:999px; text-decoration:none;
    transition:background .2s ease;
  }
  .back:hover{ background:var(--violet); }

  /* hero */
  .doc-hero{
    padding:clamp(48px,7vw,96px) 0 clamp(32px,4vw,56px);
    border-bottom:1px solid var(--line);
    position:relative;
  }
  .crumb{
    font-family:var(--narrow);
    text-transform:uppercase; letter-spacing:.14em;
    font-size:11.5px; font-weight:600;
    color:var(--ink-mute);
    display:flex; gap:8px; align-items:center;
  }
  .crumb a{ text-decoration:none; }
  .crumb a:hover{ color:var(--violet); }
  .crumb .sep{ color:var(--line); }
  .doc-num{
    font-family:var(--mono); font-size:13px;
    color:var(--violet); letter-spacing:.04em;
    margin-top:24px;
  }
  .doc-title{
    font-family:var(--display);
    font-weight:900;
    font-size:clamp(44px,7vw,96px);
    line-height:.92;
    letter-spacing:-.025em;
    margin:8px 0 20px;
  }
  .doc-title .v{ color:var(--violet); }
  .doc-lead{
    font-size:clamp(16px,1.4vw,19px);
    color:var(--ink-soft);
    max-width:60ch;
    line-height:1.55;
  }
  .doc-meta{
    display:flex; gap:14px 32px; flex-wrap:wrap;
    margin-top:28px; padding-top:20px;
    border-top:1px solid var(--line);
    font-family:var(--narrow);
    text-transform:uppercase; letter-spacing:.12em;
    font-size:12px; font-weight:600;
  }
  .doc-meta b{ color:var(--violet); font-weight:700; }
  .doc-meta .deadline-pill{
    background:var(--ink); color:var(--paper);
    padding:8px 14px; border-radius:999px;
    display:inline-flex; gap:8px; align-items:center;
  }
  .doc-meta .deadline-pill .dot{ width:6px; height:6px; background:var(--orange); border-radius:50%; }

  /* layout */
  .doc-section{ padding:clamp(40px,6vw,80px) 0 clamp(72px,9vw,120px); }
  .reg-grid{
    display:grid; grid-template-columns:280px 1fr;
    gap:clamp(20px,4vw,56px); align-items:start;
  }
  @media (max-width:980px){ .reg-grid{ grid-template-columns:1fr; } }

  .reg-toc{
    position:sticky; top:84px;
    border-top:1px solid var(--ink);
    padding-top:20px;
  }
  .reg-toc .label{
    font-family:var(--mono); font-size:12px;
    color:var(--ink-mute); margin-bottom:14px;
  }
  .reg-toc ol{
    list-style:none; padding:0; margin:0;
    counter-reset:toc;
  }
  .reg-toc li{ counter-increment:toc; padding:10px 0; border-bottom:1px solid var(--line-soft); }
  .reg-toc a{
    text-decoration:none;
    display:flex; gap:10px; align-items:baseline;
    font-family:var(--narrow);
    text-transform:uppercase; letter-spacing:.1em;
    font-size:12px; font-weight:600;
    color:var(--ink); transition:color .2s;
  }
  .reg-toc a::before{
    content:counter(toc,decimal-leading-zero);
    font-family:var(--mono); font-size:11px;
    color:var(--ink-mute); flex-shrink:0;
  }
  .reg-toc a:hover{ color:var(--violet); }
  .reg-toc .toc-cta{
    margin-top:24px; padding:18px;
    background:var(--ink); color:var(--paper);
    border-radius:6px;
  }
  .reg-toc .toc-cta .l{
    font-family:var(--narrow); font-size:11px;
    text-transform:uppercase; letter-spacing:.14em;
    color:var(--orange); font-weight:700;
  }
  .reg-toc .toc-cta .d{
    font-family:var(--display); font-weight:800;
    font-size:18px; margin:6px 0 12px;
  }
  .reg-toc .toc-cta a{
    font-family:var(--narrow); font-size:12px;
    text-transform:uppercase; letter-spacing:.12em;
    color:var(--paper); border-bottom:1px solid var(--paper);
    padding-bottom:2px;
  }

  .reg-body{ max-width:780px; }
  .article{
    padding-bottom:clamp(28px,3vw,40px);
    margin-bottom:clamp(28px,3vw,40px);
    border-bottom:1px solid var(--line);
    scroll-margin-top:100px;
  }
  .article:last-child{ border-bottom:0; }
  .article .num{
    font-family:var(--mono); font-size:12px;
    color:var(--violet); letter-spacing:.04em;
  }
  .article h2{
    font-family:var(--display); font-weight:900;
    font-size:clamp(26px,3vw,38px);
    line-height:1.05; letter-spacing:-.015em;
    margin:6px 0 18px;
  }
  .article p, .article li{
    color:var(--ink-soft); font-size:15.5px; line-height:1.65;
  }
  .article ul{ padding-left:18px; margin:10px 0; }
  .article li{ margin-bottom:8px; }
  .article li strong{ color:var(--ink); }
  .article .callout{
    background:white; border-left:3px solid var(--orange);
    padding:14px 18px; border-radius:0 4px 4px 0;
    margin:14px 0; font-size:14.5px;
  }
  .article .callout strong{ color:var(--ink); }
  .article .pcat{
    background:white; border:1px solid var(--line-soft);
    border-radius:6px; padding:22px;
    margin:14px 0;
  }
  .article .pcat .head{
    display:flex; justify-content:space-between; flex-wrap:wrap; gap:8px;
    align-items:baseline; margin-bottom:8px;
  }
  .article .pcat h3{
    font-family:var(--display); font-weight:900;
    font-size:22px; margin:0;
    letter-spacing:-.01em;
  }
  .article .pcat:nth-of-type(1) h3{ color:var(--violet); }
  .article .pcat:nth-of-type(2) h3{ color:var(--orange); }
  .article .pcat:nth-of-type(3) h3{ color:var(--teal); }
  .article .pcat .reward{
    font-family:var(--mono); font-size:12px;
    color:var(--ink-mute); letter-spacing:.04em;
  }
  .article .pcat dl{ margin:12px 0 0; display:grid; grid-template-columns:auto 1fr; gap:8px 18px; }
  .article .pcat dt{
    font-family:var(--narrow); text-transform:uppercase;
    font-size:11px; letter-spacing:.12em; font-weight:700;
    color:var(--ink-mute);
  }
  .article .pcat dd{ margin:0; font-size:14.5px; color:var(--ink); }
  .article .pcat dd.amount{ font-family:var(--display); font-weight:800; color:var(--ink); }

  /* download/footer */
  .doc-foot{
    background:var(--ink); color:var(--paper);
    padding:clamp(48px,6vw,80px) 0 30px;
  }
  .doc-foot .row{
    display:flex; justify-content:space-between; gap:24px;
    flex-wrap:wrap; align-items:flex-end;
  }
  .doc-foot h3{
    font-family:var(--display); font-weight:900;
    font-size:clamp(28px,3.5vw,42px); line-height:1;
    margin:0 0 10px; letter-spacing:-.02em;
  }
  .doc-foot p{ color:rgba(239,232,218,.72); margin:0; max-width:46ch; }
  .doc-foot .actions{ display:flex; gap:10px; flex-wrap:wrap; }
  .btn{
    display:inline-flex; align-items:center; gap:.6em;
    padding:12px 18px; font-family:var(--narrow);
    text-transform:uppercase; letter-spacing:.12em;
    font-size:12px; font-weight:700;
    border-radius:999px; text-decoration:none;
    border:none; cursor:pointer;
  }
  .btn-orange{ background:var(--orange); color:white; }
  .btn-orange:hover{ background:#c44d1f; }
  .btn-ghost{ background:transparent; color:var(--paper); border:1.5px solid rgba(239,232,218,.4); }
  .btn-ghost:hover{ border-color:var(--paper); }
  .doc-foot .bottom{
    margin-top:48px; padding-top:24px;
    border-top:1px solid rgba(239,232,218,.18);
    display:flex; justify-content:space-between; gap:20px; flex-wrap:wrap;
    font-family:var(--mono); font-size:12px;
    color:rgba(239,232,218,.55);
  }
  @media print{
    .nav, .reg-toc, .doc-foot, .crumb, body::before { display:none !important; }
    .reg-grid{ grid-template-columns:1fr; }
    body{ background:white; }
    .article{ page-break-inside:avoid; }
  }
  
  
#whatsapp-float {
      position: fixed;
      bottom: 28px;
      right: 28px;
      z-index: 9999;
      display: flex;
      align-items: center;
      justify-content: center;
      width: 60px;
      height: 60px;
      border-radius: 50%;
      background: #25D366;
      box-shadow: 0 4px 20px rgba(37, 211, 102, 0.45), 0 2px 8px rgba(0,0,0,0.25);
      text-decoration: none;
      transition: transform 0.25s cubic-bezier(.34,1.56,.64,1), box-shadow 0.25s ease;
      animation: wa-pulse 2.8s ease-in-out infinite;
    }
    #whatsapp-float svg {
      width: 32px;
      height: 32px;
      fill: #fff;
      flex-shrink: 0;
    }
    #whatsapp-float:hover {
      transform: scale(1.12);
      box-shadow: 0 6px 28px rgba(37, 211, 102, 0.65), 0 4px 12px rgba(0,0,0,0.3);
      animation: none;
    }
    .wa-tooltip {
      position: absolute;
      right: 70px;
      background: #111;
      color: #fff;
      font-family: 'Inter', 'Outfit', sans-serif;
      font-size: 13px;
      font-weight: 500;
      letter-spacing: 0.02em;
      white-space: nowrap;
      padding: 7px 14px;
      border-radius: 8px;
      pointer-events: none;
      opacity: 0;
      transform: translateX(6px);
      transition: opacity 0.2s ease, transform 0.2s ease;
      box-shadow: 0 2px 10px rgba(0,0,0,0.3);
    }
    .wa-tooltip::after {
      content: '';
      position: absolute;
      right: -7px;
      top: 50%;
      transform: translateY(-50%);
      border: 7px solid transparent;
      border-left-color: #111;
      border-right-width: 0;
    }
    #whatsapp-float:hover .wa-tooltip {
      opacity: 1;
      transform: translateX(0);
    }
    @keyframes wa-pulse {
      0%   { box-shadow: 0 4px 20px rgba(37,211,102,0.45), 0 0 0 0 rgba(37,211,102,0.5); }
      60%  { box-shadow: 0 4px 20px rgba(37,211,102,0.45), 0 0 0 14px rgba(37,211,102,0); }
      100% { box-shadow: 0 4px 20px rgba(37,211,102,0.45), 0 0 0 0 rgba(37,211,102,0); }
    }
    @media (max-width: 600px) {
      #whatsapp-float {
        bottom: 18px;
        right: 18px;
        width: 54px;
        height: 54px;
      }
      #whatsapp-float svg { width: 28px; height: 28px; }
    }