:root {
    /* paleta oficial Wrap OS (assets/css/design-tokens.css): navy + vino */
    --bg: #0a1929;
    --bg-panel: #132436;
    --bg-panel-2: #1e2f47;
    --rule: #2c4059;
    --ink: #f4f7fc;
    --ink-dim: #9fb0c7;
    --muted: #6b7a90;
    --accent: #aa0021;
    --accent-ink: #ffffff;
    --accent-glow: rgba(170, 0, 33, 0.32);
    --signal: #6fcf73;
    --over: #f0616a;
    --focus: #c4002a;
  }
  :root[data-theme="light"] {
    --bg: #f4f7fc;
    --bg-panel: #ffffff;
    --bg-panel-2: #e9edf3;
    --rule: #ccd6e4;
    --ink: #0a1929;
    --ink-dim: #33455c;
    --muted: #6b7a90;
    --accent: #aa0021;
    --accent-ink: #ffffff;
    --accent-glow: rgba(170, 0, 33, 0.18);
    --signal: #2e7d32;
    --over: #aa0021;
    --focus: #aa0021;
  }
  @media (prefers-color-scheme: light) {
    :root:not([data-theme="dark"]) {
      --bg: #f4f7fc;
      --bg-panel: #ffffff;
      --bg-panel-2: #e9edf3;
      --rule: #ccd6e4;
      --ink: #0a1929;
      --ink-dim: #33455c;
      --muted: #6b7a90;
      --accent: #aa0021;
      --accent-ink: #ffffff;
      --accent-glow: rgba(170, 0, 33, 0.18);
      --signal: #2e7d32;
      --over: #aa0021;
      --focus: #aa0021;
    }
  }

  * { box-sizing: border-box; }
  html, body { margin: 0; padding: 0; }
  body {
    background: var(--bg);
    color: var(--ink);
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
  }
  ::selection { background: var(--accent); color: var(--accent-ink); }

  .num {
    font-family: ui-monospace, "SF Mono", "Menlo", "Consolas", monospace;
    font-variant-numeric: tabular-nums;
  }

  .display {
    font-family: "Arial Narrow", "Helvetica Neue Condensed", system-ui, sans-serif;
    font-weight: 800;
    letter-spacing: 0.01em;
    text-transform: uppercase;
    text-wrap: balance;
  }

  .eyebrow {
    font-family: ui-monospace, "SF Mono", Menlo, monospace;
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--muted);
    display: flex;
    align-items: center;
    gap: 0.6em;
  }
  .eyebrow::before {
    content: "";
    width: 0.5em;
    height: 0.5em;
    background: var(--accent);
  }

  a { color: inherit; }

  .wrap {
    max-width: 1040px;
    margin: 0 auto;
    padding: 0 clamp(1.25rem, 4vw, 2.5rem);
  }

  header.top {
    border-bottom: 1px solid var(--rule);
    padding: 1.1rem 0;
  }
  header.top .wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
  }
  .wordmark {
    font-family: "Arial Narrow", "Helvetica Neue Condensed", system-ui, sans-serif;
    font-weight: 800;
    font-size: 1.3rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    display: inline-flex;
    align-items: center;
    gap: 0.5em;
  }
  .logo-mark { height: 1.9rem; width: auto; display: block; }
  .wordmark span { color: var(--accent); }
  .top-meta {
    font-family: ui-monospace, monospace;
    font-size: 0.72rem;
    color: var(--muted);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    display: none;
  }
  @media (min-width: 640px) { .top-meta { display: block; } }

  .btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5em;
    background: var(--accent);
    color: var(--accent-ink);
    font-weight: 700;
    font-size: 0.9rem;
    padding: 0.7em 1.2em;
    border: none;
    cursor: pointer;
    text-decoration: none;
    letter-spacing: 0.01em;
  }
  .btn:hover { filter: brightness(1.08); }
  .btn:focus-visible, a:focus-visible, input:focus-visible, button:focus-visible {
    outline: 2px solid var(--focus);
    outline-offset: 2px;
  }
  .btn-ghost {
    background: none;
    border: 1px solid var(--rule);
    color: var(--ink);
  }
  .btn-ghost:hover { border-color: var(--muted); }

  .lang-switch {
    font-family: ui-monospace, monospace;
    font-size: 0.75rem;
    letter-spacing: 0.06em;
    color: var(--muted);
    text-decoration: none;
    border: 1px solid var(--rule);
    padding: 0.45em 0.7em;
  }
  .lang-switch:hover { color: var(--ink); border-color: var(--muted); }

  section { padding: clamp(2.5rem, 6vw, 4.5rem) 0; }
  section + section { border-top: 1px solid var(--rule); }
  main > section:nth-of-type(even) { background: var(--bg-panel-2); }

  /* revela cada sección al entrar en viewport; sin JS o con
     prefers-reduced-motion, .reveal-pending nunca se agrega y el
     contenido queda visible por default — ver assets/site.js */
  .reveal { transition: opacity 0.6s ease, transform 0.6s ease; }
  .reveal.reveal-pending { opacity: 0; transform: translateY(16px); }
  .reveal.is-visible { opacity: 1; transform: translateY(0); }
  @media (prefers-reduced-motion: reduce) {
    .reveal.reveal-pending { opacity: 1; transform: none; }
  }

  .hero { padding-top: clamp(3rem, 8vw, 5rem); }
  .hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
    align-items: center;
  }
  @media (min-width: 900px) {
    .hero-grid { grid-template-columns: 1.05fr 0.95fr; gap: 3rem; }
  }
  .hero h1 {
    font-size: clamp(2.1rem, 5vw, 3.4rem);
    line-height: 1.05;
    margin: 0.6em 0 0.5em;
  }
  .hero h1 em {
    font-style: normal;
    color: var(--accent);
  }
  .hero p.lede {
    color: var(--ink-dim);
    font-size: 1.05rem;
    max-width: 46ch;
    margin: 0 0 1.6rem;
  }
  .hero-cta { display: flex; flex-wrap: wrap; gap: 0.9rem; align-items: center; }
  .hero-cta .fine {
    font-family: ui-monospace, monospace;
    font-size: 0.75rem;
    color: var(--muted);
    letter-spacing: 0.04em;
  }

  /* ledger mockup */
  .ledger {
    position: relative;
    background: var(--bg-panel);
    border: 1px solid var(--rule);
    box-shadow: 0 1px 0 var(--rule);
  }
  /* único momento con acento fuerte: la ledger de la hero, y solo ella */
  .hero .ledger::before {
    content: "";
    position: absolute;
    inset: -15%;
    background: radial-gradient(ellipse at 30% 15%, var(--accent-glow), transparent 65%);
    filter: blur(40px);
    z-index: -1;
    pointer-events: none;
  }
  .ledger-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 1rem;
    border-bottom: 1px solid var(--rule);
    font-family: ui-monospace, monospace;
    font-size: 0.7rem;
    color: var(--muted);
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }
  .ledger-head .dot { color: var(--signal); }
  table.budget {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.86rem;
  }
  table.budget th {
    text-align: left;
    font-family: ui-monospace, monospace;
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted);
    font-weight: 500;
    padding: 0.7rem 1rem 0.5rem;
  }
  table.budget th.r, table.budget td.r { text-align: right; }
  table.budget td { padding: 0.55rem 1rem; border-top: 1px solid var(--rule); }
  table.budget tr.total td { border-top: 1px solid var(--muted); font-weight: 700; padding-top: 0.8rem; }
  .delta-ok { color: var(--signal); }
  .delta-over { color: var(--over); }
  .flow-table td:first-child, .flow-table th:first-child {
    width: 22%;
    color: var(--ink-dim);
    font-weight: 600;
  }
  .ledger-foot {
    padding: 0.7rem 1rem 0.9rem;
    font-size: 0.72rem;
    color: var(--muted);
    font-family: ui-monospace, monospace;
  }


  h2.section-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin: 0.3em 0 0.9em;
    max-width: 30ch;
  }

  .features {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1px;
    background: var(--rule);
    border: 1px solid var(--rule);
  }
  @media (min-width: 700px) { .features { grid-template-columns: 1fr 1fr; } }
  .feature {
    background: var(--bg);
    padding: 1.6rem clamp(1.1rem, 2.5vw, 1.7rem);
  }
  .feature .tag {
    font-family: ui-monospace, monospace;
    font-size: 0.68rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 0.6em;
    display: block;
  }
  .feature h4 { margin: 0 0 0.4em; font-size: 1.05rem; }
  .feature p { margin: 0; color: var(--muted); font-size: 0.92rem; }
  .feature.standout { background: var(--bg-panel-2); }
  .feature.standout .tag { color: var(--signal); }
  .feature.wide { grid-column: 1 / -1; }

  .faq { display: grid; gap: 0; max-width: 68ch; }
  .faq-item { border-top: 1px solid var(--rule); }
  .faq-item:last-child { border-bottom: 1px solid var(--rule); }
  .faq-item summary {
    cursor: pointer;
    padding: 1.1rem 0.2rem;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    list-style: none;
  }
  .faq-item summary::-webkit-details-marker { display: none; }
  .faq-item summary::after {
    content: "+";
    font-family: ui-monospace, monospace;
    color: var(--accent);
    font-size: 1.1rem;
    flex: none;
  }
  .faq-item[open] summary::after { content: "–"; }
  .faq-item p { margin: 0 0 1.2rem; color: var(--ink-dim); max-width: 62ch; font-size: 0.94rem; }

  .waitlist {
    background: var(--bg-panel);
    border: 1px solid var(--rule);
    padding: clamp(1.6rem, 4vw, 2.6rem);
    display: grid;
    gap: 1.6rem;
  }
  @media (min-width: 820px) { .waitlist { grid-template-columns: 1fr 1fr; align-items: start; } }
  .waitlist h2 { margin: 0.2em 0 0.5em; font-size: clamp(1.4rem, 2.6vw, 1.9rem); }
  .waitlist p { color: var(--muted); margin: 0; max-width: 42ch; }
  form.wl { display: grid; gap: 0.75rem; }
  form.wl label {
    font-family: ui-monospace, monospace;
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted);
    display: block;
    margin-bottom: 0.35em;
  }
  form.wl input {
    width: 100%;
    background: var(--bg);
    border: 1px solid var(--rule);
    color: var(--ink);
    padding: 0.7em 0.8em;
    font-size: 0.95rem;
    font-family: inherit;
  }
  form.wl input:focus-visible { outline: 2px solid var(--focus); outline-offset: 1px; }
  .wl-row { display: grid; gap: 0.75rem; grid-template-columns: 1fr 1fr; }
  .wl-done {
    display: none;
    align-items: center;
    gap: 0.6em;
    color: var(--signal);
    font-family: ui-monospace, monospace;
    font-size: 0.85rem;
    padding: 0.9em 0;
  }
  .wl-done.show { display: flex; }
  form.wl.hide { display: none; }
  .wl-hp { position: absolute; left: -9999px; top: auto; width: 1px; height: 1px; overflow: hidden; }
  .wl-error { color: var(--over); font-size: 0.82rem; margin: 0.6rem 0 0; min-height: 1.2em; }

  footer {
    padding: 2rem 0 3rem;
    color: var(--muted);
    font-size: 0.8rem;
  }
  footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.6rem; }

  @media (prefers-reduced-motion: no-preference) {
    .btn { transition: filter 0.15s ease; }
    .faq-item summary::after { transition: transform 0.15s ease; }
  }