:root {
  --bg: #f7f8fa; --card: #ffffff; --text: #16202c; --muted: #5b6878; --line: #e3e7ec;
  --brand: #1f5fbf; --brand-soft: #e8f0fc; --up: #c0392b; --down: #1e8a4c; --radius: 14px;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0f141a; --card: #171e26; --text: #e8edf3; --muted: #9aa7b6; --line: #27313c;
    --brand: #6ea4f5; --brand-soft: #1b2a40; --up: #ef7a6c; --down: #5fce8c; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--brand); }
.wrap { max-width: 860px; margin: 0 auto; padding: 0 16px; }
header.top { border-bottom: 1px solid var(--line); background: var(--card); }
header.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.logo { font-weight: 800; text-decoration: none; color: var(--text); font-size: 1.1rem; display: flex; align-items: center; gap: 8px; }
.logo img { border-radius: 7px; display: block; }
.logo span { color: var(--brand); }
nav a { margin-left: 16px; text-decoration: none; color: var(--muted); font-size: .95rem; }
nav a:hover { color: var(--brand); }
h1 { font-size: 1.7rem; line-height: 1.2; margin: 28px 0 6px; }
h2 { font-size: 1.25rem; margin: 0 0 12px; }
.sub { color: var(--muted); margin: 0 0 20px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; margin-bottom: 18px; }
.hero { display: grid; grid-template-columns: 1.3fr 1fr; gap: 18px; }
.big { font-size: 3.2rem; font-weight: 800; letter-spacing: -1px; line-height: 1; margin: 6px 0; font-variant-numeric: tabular-nums; }
.label { color: var(--muted); font-size: .9rem; }
.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.stat { background: var(--bg); border-radius: 10px; padding: 12px; }
.stat b { display: block; font-size: 1.25rem; font-variant-numeric: tabular-nums; }
.up { color: var(--up); } .down { color: var(--down); }
.chart svg { width: 100%; height: auto; display: block; }
.chart .grid { stroke: var(--line); } .chart .axis { fill: var(--muted); font-size: 11px; }
.chart .linea { fill: none; stroke: var(--brand); stroke-width: 2.5; }
.chart .area { fill: var(--brand-soft); }
.filtros { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: center; justify-content: space-between; margin-bottom: 4px; }
.rangos { display: flex; flex-wrap: wrap; gap: 6px; }
.rangos button { border: 1px solid var(--line); background: var(--bg); color: var(--text); padding: 6px 12px; border-radius: 999px; font: inherit; font-size: .88rem; cursor: pointer; }
.rangos button:hover { border-color: var(--brand); }
.rangos button.activo { background: var(--brand); border-color: var(--brand); color: #fff; }
.fechas { display: flex; gap: 10px; flex-wrap: wrap; }
.fechas label { font-size: .85rem; color: var(--muted); display: flex; align-items: center; gap: 6px; }
.fechas input { padding: 5px 8px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--text); font: inherit; font-size: .88rem; }
.f-titulo { margin: 10px 0 6px; }
.stats4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; margin-top: 12px; }
.chart .captura { cursor: crosshair; touch-action: pan-y; }
.chart .cursor-linea { stroke: var(--muted); stroke-dasharray: 3 3; }
.chart .cursor-punto { fill: var(--brand); stroke: var(--card); stroke-width: 2; }
.chart .cursor-caja { fill: var(--card); stroke: var(--line); }
.chart .cursor-mes { fill: var(--muted); font-size: 12px; }
.chart .cursor-valor { fill: var(--text); font-size: 15px; font-weight: 700; }
.tabla-scroll { max-height: 520px; overflow-y: auto; }
.tabla-scroll thead th { position: sticky; top: 0; background: var(--card); }
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 600; font-size: .85rem; }
td.n, th.n { text-align: right; }
.calc { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; }
.calc > div { display: flex; flex-direction: column; justify-content: flex-end; }
.calc label { font-size: .85rem; color: var(--muted); display: block; margin-bottom: 4px; }
.calc input { width: 100%; padding: 10px; font-size: 1rem; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--text); }
.resultado { margin-top: 16px; padding: 16px; border-radius: 10px; background: var(--brand-soft); font-size: 1.05rem; }
.resultado b { font-size: 1.4rem; }
.cta { background: var(--brand); color: #fff; border-radius: var(--radius); padding: 20px; margin-bottom: 18px; }
.cta p { margin: 0 0 12px; font-weight: 600; }
.cta a { display: inline-block; background: #fff; color: #1f5fbf; padding: 10px 18px; border-radius: 8px; font-weight: 700; text-decoration: none; }
.ad { margin: 0 0 18px; }
.ad ins.adsbygoogle[data-ad-status="unfilled"] { display: none !important; }
.meses { columns: 4 140px; font-size: .92rem; }
.meses a { display: block; text-decoration: none; padding: 2px 0; }
details { border-bottom: 1px solid var(--line); padding: 10px 0; }
summary { cursor: pointer; font-weight: 600; }
footer { color: var(--muted); font-size: .85rem; padding: 24px 0 40px; }
.nota { font-size: .85rem; color: var(--muted); }
@media (max-width: 640px) {
  .hero { grid-template-columns: 1fr; } .big { font-size: 2.6rem; } h1 { font-size: 1.4rem; }
  nav a { margin-left: 10px; font-size: .85rem; }
}