:root{
  --bg:#f6f5f0;--card:#fff;--ink:#17201d;--muted:#55605b;--line:#e1dfd6;
  --brand:#0f6b54;--brand-dark:#0a4f3e;--brand-ink:#fff;--accent:#e8f3ef;--warn:#fff6e0;
  --radius:14px;--max:780px;
  --shadow:0 1px 2px rgba(23,32,29,.05),0 6px 20px rgba(23,32,29,.06);
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);line-height:1.65;font-size:17px}
a{color:var(--brand);text-underline-offset:2px}
a:hover{color:var(--brand-dark)}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 18px}

/* Cabecera */
header.site{background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
header.site .wrap{max-width:1200px;display:flex;align-items:center;justify-content:space-between;gap:6px 16px;padding-top:10px;padding-bottom:10px;flex-wrap:wrap}
.logo{display:inline-flex;align-items:center;gap:9px;font-weight:800;text-decoration:none;color:var(--ink);font-size:1.08rem;letter-spacing:-.01em;white-space:nowrap}
.logo:hover{color:var(--ink)}
.logo .mark{width:28px;height:28px;flex:none}
.logo span{color:var(--brand)}
nav.main{display:flex;gap:2px;overflow-x:auto;max-width:100%;scrollbar-width:none;margin:0 -8px}
nav.main::-webkit-scrollbar{display:none}
nav.main a{text-decoration:none;font-size:.9rem;color:var(--muted);padding:7px 9px;border-radius:999px;white-space:nowrap;font-weight:500}
nav.main a:hover{color:var(--brand);background:var(--accent)}
nav.main a[aria-current="page"]{color:var(--brand-dark);background:var(--accent);font-weight:700}
.menu-btn{display:none;align-items:center;gap:8px;font:inherit;font-size:.95rem;font-weight:600;color:var(--ink);background:#fff;border:1px solid #cfcdc3;border-radius:10px;padding:8px 13px;min-height:42px;cursor:pointer}
.menu-btn[aria-expanded="true"]{background:var(--accent);border-color:var(--brand);color:var(--brand-dark)}
@media (max-width:900px){
  .menu-btn{display:inline-flex;margin-left:auto}
  header.site .wrap{flex-wrap:wrap}
  nav.main{display:none;flex-direction:column;gap:2px;width:100%;margin:6px 0 4px;overflow:visible}
  nav.main.open{display:flex}
  nav.main a{padding:12px 14px;border-radius:10px;font-size:1rem;white-space:normal}
}

/* Texto */
main{padding:30px 0 56px}
h1{font-size:2rem;line-height:1.18;margin:.2em 0 .4em;letter-spacing:-.025em;text-wrap:balance}
h2{font-size:1.35rem;line-height:1.25;margin:2em 0 .5em;letter-spacing:-.015em}
h3{font-size:1.08rem;margin:1.4em 0 .3em}
article h2{border-top:1px solid var(--line);padding-top:1.1em}
p,ul,ol{margin:.7em 0}
li{margin:.35em 0}
.lead{color:var(--muted);font-size:1.08rem;margin-top:0}
.updated{font-size:.85rem;color:var(--muted)}
.crumbs{font-size:.85rem;color:var(--muted);margin:0 0 6px}
.crumbs a{color:var(--muted)}

/* Portada */
.hero{padding:14px 0 4px}
.hero h1{font-size:2.3rem}
.trust{list-style:none;padding:0;margin:18px 0 0;display:flex;flex-wrap:wrap;gap:8px}
.trust li{margin:0;display:inline-flex;align-items:center;gap:7px;background:var(--card);border:1px solid var(--line);border-radius:999px;padding:6px 13px;font-size:.88rem;font-weight:600;color:var(--ink)}
.trust li::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--brand);flex:none}

/* Tarjetas */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin:22px 0;box-shadow:var(--shadow)}
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin:22px 0}
.grid a.card{display:block;margin:0;padding:20px;text-decoration:none;color:var(--ink);transition:border-color .15s,transform .15s,box-shadow .15s}
.grid a.card:hover{border-color:var(--brand);transform:translateY(-2px);box-shadow:0 2px 4px rgba(23,32,29,.06),0 12px 28px rgba(23,32,29,.1)}
.grid a.card .ico{display:flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:11px;background:var(--accent);color:var(--brand);margin-bottom:12px}
.grid a.card .ico svg{width:22px;height:22px}
.grid a.card strong{display:block;font-size:1.08rem;margin-bottom:4px;color:var(--brand-dark);line-height:1.3}
.grid a.card span{color:var(--muted);font-size:.93rem;line-height:1.5;display:block}
.grid.small{grid-template-columns:repeat(2,1fr)}
.grid.small a.card{padding:16px}

/* Calculadoras */
.tool label{display:block;font-weight:600;font-size:.95rem;margin:14px 0 6px}
.tool>label:first-child,.tool>.row:first-child label{margin-top:0}
.tool .hint{font-weight:400;color:var(--muted);font-size:.85rem}
.tool input,.tool select{width:100%;font:inherit;font-size:1.05rem;padding:11px 12px;border:1px solid #cfcdc3;border-radius:10px;background:#fff;color:var(--ink);min-height:48px}
.tool input:focus,.tool select:focus{outline:2px solid var(--brand);outline-offset:0;border-color:var(--brand)}
.row{display:grid;grid-template-columns:1fr 1fr;gap:0 14px;align-items:end}
.row3{display:grid;grid-template-columns:repeat(3,1fr);gap:0 12px;align-items:end}
.tool fieldset{border:1px solid var(--line);border-radius:12px;padding:4px 16px 16px;margin:18px 0 0;min-width:0}
.tool fieldset:first-of-type{margin-top:6px}
.tool legend{font-weight:700;padding:0 6px;font-size:1rem}
.tool legend .hint{display:block}
.check{display:flex!important;align-items:center;gap:10px;margin-top:16px!important;font-weight:600;font-size:.95rem;cursor:pointer}
.check input{width:20px;height:20px;min-height:0;flex:none;accent-color:var(--brand)}
.tabs{display:flex;gap:8px;margin-bottom:14px;flex-wrap:wrap}
.tabs button{border:1px solid #cfcdc3;background:#fff;padding:9px 16px;border-radius:999px;font:inherit;font-size:.95rem;cursor:pointer;color:var(--ink);min-height:42px}
.tabs button:hover{border-color:var(--brand)}
.tabs button[aria-pressed="true"]{background:var(--brand);color:var(--brand-ink);border-color:var(--brand);font-weight:600}
.result{background:var(--accent);border:1px solid #d3e7df;border-radius:12px;padding:20px;margin-top:22px}
.big{font-size:2.15rem;font-weight:800;letter-spacing:-.02em;color:var(--brand-dark);line-height:1.15;font-variant-numeric:tabular-nums}
.big small{font-size:1rem;font-weight:600;color:var(--muted)}
table.breakdown{width:100%;border-collapse:collapse;margin-top:12px;font-size:.98rem}
table.breakdown td{padding:8px 0;border-bottom:1px solid rgba(0,0,0,.08)}
table.breakdown td:last-child{text-align:right;font-variant-numeric:tabular-nums;font-weight:600;padding-left:12px}
.result.empty table,.result.empty .cols,.result.empty #r-resumen{display:none}
.result.empty .big{color:var(--muted)}
.big,table.breakdown td{overflow-wrap:anywhere}
table.breakdown tr.total td{border-bottom:none;font-weight:800;padding-top:11px}
table.breakdown tr.sep td{font-size:.8rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:700;padding-top:16px}
.cols{display:grid;grid-template-columns:1fr 1fr;gap:6px 26px}
.cols h3{margin:14px 0 0;font-size:.82rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}

/* Tablas de datos */
table.data{width:100%;border-collapse:collapse;font-size:.92rem;background:var(--card)}
table.data th,table.data td{border:1px solid var(--line);padding:8px 9px;text-align:left}
table.data th{background:var(--accent);font-size:.86rem}
table.data tr:nth-child(odd) td{background:#fbfaf7}
table.data td.n{text-align:right;font-variant-numeric:tabular-nums}
.scroll{overflow-x:auto;border-radius:10px}
#cal{min-width:600px}

.next{background:var(--brand);color:#fff;border-radius:var(--radius);padding:20px 22px;margin:22px 0;box-shadow:var(--shadow)}
.next .k{font-size:.82rem;text-transform:uppercase;letter-spacing:.07em;font-weight:700;opacity:.85}
.next .v{font-size:1.5rem;font-weight:800;line-height:1.25;margin:4px 0;letter-spacing:-.01em}
.next p{margin:0;font-size:.95rem;opacity:.95}
table.data tr.past td{color:#8a928e;text-decoration:line-through;text-decoration-color:#c9cdca}
table.data tr.now td{background:var(--accent)!important;font-weight:600}
.tag{display:inline-block;font-size:.75rem;font-weight:700;border-radius:999px;padding:2px 9px;white-space:nowrap}
.tag.ok{background:var(--accent);color:var(--brand-dark)}
.tag.prev{background:var(--warn);color:#7a5a00}
.note{background:var(--warn);border:1px solid #f1e3b8;border-radius:10px;padding:13px 15px;font-size:.93rem;margin-top:16px}

/* Preguntas frecuentes */
details{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:0 16px;margin:10px 0}
details summary{font-weight:600;cursor:pointer;padding:13px 22px 13px 0;list-style:none;position:relative}
details summary::-webkit-details-marker{display:none}
details summary::after{content:"+";position:absolute;right:0;top:50%;transform:translateY(-50%);font-size:1.3rem;font-weight:400;color:var(--brand);line-height:1}
details[open] summary::after{content:"−"}
details[open]{border-color:#cfe3db}
details p{margin:0 0 14px}

.ad-slot{margin:24px 0;min-height:0}

/* Pie */
footer.site{border-top:1px solid var(--line);background:var(--card);padding:32px 0 24px;font-size:.9rem;color:var(--muted)}
footer.site a{color:var(--muted);text-decoration:none}
footer.site a:hover{color:var(--brand);text-decoration:underline}
.fcols{display:grid;grid-template-columns:1.3fr 1fr 1.2fr .8fr;gap:20px 24px}
.fcols ul{list-style:none;padding:0;margin:0}
.fcols li{margin:.3em 0}
.fcols p{margin:0 0 .5em}
.ftitle{font-weight:700;color:var(--ink)}
.fnote{border-top:1px solid var(--line);margin:22px 0 0;padding-top:16px;font-size:.84rem}

@media (max-width:620px){
  body{font-size:16.5px}
  h1{font-size:1.65rem}.hero h1{font-size:1.8rem}
  .row,.grid,.grid.small,.cols{grid-template-columns:1fr}
  .row3{gap:0 8px}.tool fieldset{padding:4px 12px 14px}
  .card{padding:18px}
  .big{font-size:1.85rem}
  .fcols{grid-template-columns:1fr 1fr}
  .fcols>div:first-child{grid-column:1/-1}
  header.site{position:static}
  .logo{font-size:.95rem;gap:6px}.logo .mark{width:24px;height:24px}.menu-btn{padding:6px 10px;gap:6px;font-size:.9rem;min-height:40px}header.site .wrap{gap:6px 8px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media print{header.site,footer.site,.ad-slot,nav.main{display:none}body{background:#fff}}