:root {
  --bg: #eef2f0; --panel: #ffffff; --panel-2: #f4f7f5;
  --line: #dde5e1; --ink: #15231d; --muted: #5f7269; --faint: #869489;
  --accent: #0e9e74; --accent-ink: #075039; --teal: #0d7d8f;
  --shadow: 0 1px 2px rgba(20,45,35,.06), 0 12px 30px rgba(20,45,35,.10);
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root { --bg:#0d1512; --panel:#141d19; --panel-2:#101815; --line:#26332d; --ink:#e7efea; --muted:#93a69d; --faint:#6f8177; --accent:#2fc596; --accent-ink:#bff2e0; --teal:#4bc3d6; --shadow:0 1px 2px rgba(0,0,0,.4),0 14px 34px rgba(0,0,0,.45); }
}
:root[data-theme="light"] { --bg:#eef2f0; --panel:#ffffff; --panel-2:#f4f7f5; --line:#dde5e1; --ink:#15231d; --muted:#5f7269; --faint:#869489; --accent:#0e9e74; --accent-ink:#075039; --teal:#0d7d8f; --shadow:0 1px 2px rgba(20,45,35,.06),0 12px 30px rgba(20,45,35,.10); }
:root[data-theme="dark"] { --bg:#0d1512; --panel:#141d19; --panel-2:#101815; --line:#26332d; --ink:#e7efea; --muted:#93a69d; --faint:#6f8177; --accent:#2fc596; --accent-ink:#bff2e0; --teal:#4bc3d6; --shadow:0 1px 2px rgba(0,0,0,.4),0 14px 34px rgba(0,0,0,.45); }
* { box-sizing: border-box; }
body { margin:0; background:var(--bg); color:var(--ink); font-family:var(--sans); line-height:1.7; -webkit-font-smoothing:antialiased; }
a { color:var(--accent); }
.wrap { width:min(760px,92vw); margin:0 auto; }

/* Top bar */
.topbar { border-bottom:1px solid var(--line); background:var(--panel); }
.topbar .wrap { display:flex; align-items:center; justify-content:space-between; gap:10px 18px; padding:12px 0; flex-wrap:wrap; }
.brand { display:flex; align-items:center; gap:10px; text-decoration:none; color:var(--ink); font-weight:800; flex:0 0 auto; }
.brand .bname { font-size:1.55rem; font-weight:900; letter-spacing:-.025em; background:linear-gradient(120deg,#16d093 0%,#10b4d8 100%); -webkit-background-clip:text; background-clip:text; color:transparent; }
.brand .rx { width:34px; height:34px; border-radius:9px; display:grid; place-items:center; font-weight:800; color:#04231a; background:linear-gradient(135deg,var(--accent),var(--teal)); }
.topbar-right { display:flex; align-items:center; gap:10px 16px; flex-wrap:wrap; }
.nav { display:flex; flex-wrap:wrap; align-items:center; gap:10px; }
.theme-btn { border:1px solid var(--line); background:var(--panel); color:var(--muted); border-radius:999px; width:38px; height:38px; flex:0 0 auto; display:grid; place-items:center; cursor:pointer; transition:color .15s, border-color .15s; }
.theme-btn:hover { color:var(--accent); border-color:var(--accent); }
.theme-btn:focus-visible { outline:2px solid var(--accent); outline-offset:2px; }
.theme-btn svg { width:18px; height:18px; }
.ic-sun { display:none; } .ic-moon { display:block; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .ic-sun { display:block; } :root:not([data-theme="light"]) .ic-moon { display:none; } }
:root[data-theme="dark"] .ic-sun { display:block; } :root[data-theme="dark"] .ic-moon { display:none; }
:root[data-theme="light"] .ic-sun { display:none; } :root[data-theme="light"] .ic-moon { display:block; }
.nav a { text-decoration:none; white-space:nowrap; color:var(--ink); font-size:.82rem; font-weight:600; padding:8px 16px; border-radius:999px; border:1px solid color-mix(in srgb, var(--accent) 28%, var(--line-strong)); background:color-mix(in srgb, var(--accent) 7%, transparent); transition:color .15s, border-color .15s, background .15s, transform .15s, box-shadow .15s; }
.nav a:hover { color:#04231a; border-color:transparent; background:linear-gradient(135deg, var(--accent), var(--teal)); transform:translateY(-1px); box-shadow:0 4px 14px color-mix(in srgb, var(--accent) 30%, transparent); }
/* En pantallas chicas: marca y botón de tema en la primera fila, nav debajo */
@media (max-width:720px){
  .topbar-right { display:contents; }
  .brand { order:1; }
  .theme-btn { order:2; }
  .nav { order:3; flex:1 0 100%; }
}
@media (max-width:400px){ .nav a { font-size:.75rem; padding:7px 12px; } }

/* Article */
article { padding:30px 0 10px; }
.kicker { display:inline-block; text-decoration:none; color:var(--accent); font-size:.76rem; font-weight:700; letter-spacing:.05em; text-transform:uppercase; margin:0 0 10px; }
.kicker:hover { text-decoration:underline; }
article h1 { font-size:clamp(1.5rem,3.4vw,2rem); line-height:1.2; letter-spacing:-.01em; margin:0 0 8px; text-wrap:balance; }
.meta { color:var(--faint); font-size:.85rem; margin:0 0 22px; }
article h2 { font-size:1.2rem; margin:30px 0 8px; }
article h3 { font-size:1.02rem; margin:22px 0 6px; }
article p, article li { font-size:1.02rem; }
article ul { padding-left:20px; }
article li { margin:4px 0; }
.lead { font-size:1.1rem; color:var(--ink); }

table { width:100%; border-collapse:collapse; margin:16px 0; font-size:.92rem; display:block; overflow-x:auto; }
th, td { text-align:left; padding:9px 12px; border-bottom:1px solid var(--line); white-space:nowrap; }
th { background:var(--panel-2); font-size:.8rem; text-transform:uppercase; letter-spacing:.04em; color:var(--muted); }
td.num, th.num { text-align:right; font-family:var(--mono); font-variant-numeric:tabular-nums; }

.callout { background:var(--panel-2); border:1px solid var(--line); border-left:3px solid var(--accent); border-radius:10px; padding:14px 16px; margin:18px 0; font-size:.96rem; }

.cta { background:linear-gradient(135deg, color-mix(in srgb,var(--accent) 14%,var(--panel)), var(--panel)); border:1px solid color-mix(in srgb,var(--accent) 40%,var(--line)); border-radius:14px; padding:22px; margin:28px 0; text-align:center; }
.cta h3 { margin:0 0 6px; font-size:1.15rem; }
.cta p { margin:0 0 14px; color:var(--muted); }
.btn { display:inline-block; background:linear-gradient(135deg,var(--accent),var(--teal)); color:#04231a; text-decoration:none; font-weight:700; padding:12px 22px; border-radius:10px; box-shadow:var(--shadow); }

.related { margin:28px 0; padding:18px; border:1px solid var(--line); border-radius:12px; background:var(--panel); }
.related h4 { margin:0 0 10px; font-size:.8rem; text-transform:uppercase; letter-spacing:.06em; color:var(--muted); }
.related ul { margin:0; padding-left:18px; }

.disclaimer { margin:24px 0; padding:13px 15px; border-radius:11px; background:var(--panel-2); border:1px solid var(--line); color:var(--muted); font-size:.84rem; }

footer.site { border-top:1px solid var(--line); margin-top:30px; }
footer.site .wrap { padding:22px 0 44px; color:var(--faint); font-size:.85rem; }
footer.site a { color:var(--muted); text-decoration:none; margin-right:14px; font-weight:600; }
footer.site a:hover { color:var(--accent); }

/* Formulario de contacto */
.form-row { margin: 14px 0; }
.form-row label { display:block; font-weight:600; font-size:.9rem; margin-bottom:6px; }
.form-row input, .form-row textarea { width:100%; padding:11px 12px; border-radius:10px; border:1px solid var(--line); background:var(--panel-2); color:var(--ink); font-family:var(--sans); font-size:1rem; outline:none; transition:border-color .15s, box-shadow .15s; }
.form-row input:focus, .form-row textarea:focus { border-color:var(--accent); box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 22%,transparent); }
.form-row textarea { resize:vertical; min-height:120px; }
button.btn { border:0; cursor:pointer; font-family:var(--sans); font-size:1rem; }
.form-note { margin-top:12px; color:var(--muted); font-size:.9rem; }

/* Preguntas frecuentes */
details.faq { border:1px solid var(--line); border-radius:12px; background:var(--panel); margin:12px 0; overflow:hidden; }
details.faq > summary { cursor:pointer; list-style:none; padding:16px 18px; font-weight:700; font-size:1.02rem; display:flex; justify-content:space-between; align-items:center; gap:12px; }
details.faq > summary::-webkit-details-marker { display:none; }
details.faq > summary::after { content:"+"; color:var(--accent); font-weight:800; font-size:1.3rem; line-height:1; flex:0 0 auto; }
details.faq[open] > summary::after { content:"–"; }
details.faq > summary:hover { color:var(--accent); }
.faq-a { padding:0 18px 16px; color:var(--muted); }
.faq-a p { margin:0; }

/* Cards para la página de guías */
.cards { display:grid; grid-template-columns:1fr 1fr; gap:16px; margin:24px 0; }
@media (max-width:600px){ .cards { grid-template-columns:1fr; } }
.card-link { display:block; text-decoration:none; color:var(--ink); background:var(--panel); border:1px solid var(--line); border-radius:14px; padding:18px 20px; box-shadow:var(--shadow); transition:border-color .15s, transform .15s; }
.card-link:hover { border-color:var(--accent); transform:translateY(-2px); }
.card-link h3 { margin:0 0 6px; font-size:1.05rem; }
.card-link p { margin:0; color:var(--muted); font-size:.9rem; }