/* PulsoTech: tinta verde muy oscura, papel cálido, naranja de esfuerzo como acento */
:root{
  --paper:#f7f8f5; --surface:#ffffff; --ink:#14201b; --muted:#56635d; --line:#dfe5e1;
  --accent:#e8530f; --accent-soft:#fff1e8; --teal:#0f766e; --teal-soft:#e6f4f2;
  --band:#14201b; --band-fg:#f2f5f3;
  --display:"Barlow Condensed","Arial Narrow",Arial,sans-serif;
  --body:"Source Sans 3","Segoe UI",Roboto,Arial,sans-serif;
  --radius:14px;
}
@media (prefers-color-scheme:dark){
  :root{--paper:#101614; --surface:#18201d; --ink:#e8eeeb; --muted:#9caaa3; --line:#2a3531;
    --accent:#ff7a3d; --accent-soft:#2a1a12; --teal:#4fd1c5; --teal-soft:#13282a; --band:#0b100e; --band-fg:#eef3f0; color-scheme:dark}
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:18px;line-height:1.65}
img{max-width:100%;height:auto}
a{color:var(--accent)}
a:focus-visible,button:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:4px}
.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:16px;background:var(--surface);padding:8px 12px;z-index:10}
.wrap{max-width:1120px;margin:0 auto;padding-left:max(20px,env(safe-area-inset-left));padding-right:max(20px,env(safe-area-inset-right))}
.narrow{max-width:760px}

/* Cabecera */
.top{background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.top-in{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;flex-wrap:wrap}
.logo{display:inline-flex;align-items:center;gap:10px;font-family:var(--display);font-weight:700;font-size:28px;color:var(--ink);text-decoration:none;letter-spacing:.01em}
.logo b{color:var(--accent);font-weight:800}
.logo-mark{width:30px;height:30px;border-radius:8px;background:var(--band) url("/favicon.svg") center/cover}
.logo-sm{font-size:24px}
.top nav{display:flex;gap:22px}
.top nav a{color:var(--ink);text-decoration:none;font-weight:600;font-size:16px}
.top nav a:hover{color:var(--accent)}

/* Portada */
.hero{background:var(--band);color:var(--band-fg);padding-block:56px 64px;overflow:hidden}
.hero-in{display:grid;grid-template-columns:1.3fr 1fr;gap:40px;align-items:center}
.eyebrow{font-family:var(--display);text-transform:uppercase;letter-spacing:.14em;font-weight:700;color:#ff8a52;margin:0 0 10px;font-size:16px}
.hero h1{font-family:var(--display);font-size:clamp(40px,6vw,64px);line-height:1;margin:0 0 18px;text-wrap:balance;letter-spacing:.005em}
.lead{font-size:20px;color:#c9d3ce;margin:0 0 22px;max-width:34em}
.hero-chips{display:flex;gap:8px;flex-wrap:wrap}
.hero .chip-lg{background:rgba(255,255,255,.08);color:var(--band-fg);border:1px solid rgba(255,255,255,.18)}
.hero-pulse{position:relative;border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);padding:28px 20px 18px;background:linear-gradient(180deg,rgba(255,255,255,.04),transparent)}
.hero-pulse svg{width:100%;height:120px;display:block}
.hero-pulse polyline{fill:none;stroke:#ff6a2b;stroke-width:4;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:600;stroke-dashoffset:0;animation:beat 2.4s ease-in-out infinite}
@keyframes beat{0%{stroke-dashoffset:600}55%,100%{stroke-dashoffset:0}}
.hero-bpm{font-family:var(--display);font-size:20px;color:#c9d3ce;text-align:right;margin-top:6px}
.hero-bpm span{font-size:44px;font-weight:800;color:var(--band-fg);font-variant-numeric:tabular-nums}

/* Tarjetas */
.section-title{font-family:var(--display);font-size:34px;margin:52px 0 20px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px;margin-bottom:64px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .15s ease,box-shadow .15s ease}
.card:hover{transform:translateY(-3px);box-shadow:0 10px 24px rgba(20,32,27,.10)}
.card-link{display:flex;flex-direction:column;height:100%;color:inherit;text-decoration:none}
.card-art{aspect-ratio:16/8;display:grid;place-items:center;font-size:56px;background:var(--accent-soft);position:relative}
.card-art[data-cat="Relojes"]{background:var(--teal-soft)}
.card-art[data-cat="Apps"]{background:color-mix(in srgb,var(--accent-soft) 50%,var(--teal-soft))}
.card-art::after{content:"";position:absolute;inset:auto 0 0;height:4px;background:var(--accent)}
.card-art[data-cat="Relojes"]::after{background:var(--teal)}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:6px;flex:1}
.card h3{font-family:var(--display);font-size:26px;line-height:1.1;margin:0;text-wrap:balance}
.card-desc{color:var(--muted);font-size:16px;margin:0;flex:1}
.chip{display:inline-block;width:max-content;margin:0;font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--accent)}
.chip-lg{padding:6px 12px;border-radius:999px;font-size:13px}
.meta{font-size:14px;color:var(--muted);margin:6px 0 0}

/* Artículo */
.post-head{background:var(--surface);border-bottom:1px solid var(--line);padding-block:40px 32px}
.crumbs{font-size:15px;color:var(--muted);margin:0 0 10px}
.crumbs a{color:var(--muted)}
.post-head h1{font-family:var(--display);font-size:clamp(36px,5vw,54px);line-height:1.04;margin:0 0 14px;text-wrap:balance}
.post-meta{color:var(--muted);margin:0;font-size:16px}
.prose{padding-block:32px 24px}
.prose > *{max-width:68ch}
.prose h2{font-family:var(--display);font-size:34px;line-height:1.1;margin:48px 0 14px;padding-bottom:8px;border-bottom:3px solid var(--accent);text-wrap:balance}
.prose h3{font-family:var(--display);font-size:26px;line-height:1.15;margin:34px 0 8px}
.prose p,.prose li{font-size:18px}
.prose ul,.prose ol{padding-left:24px}
.prose li{margin:6px 0}
.prose li::marker{color:var(--accent)}
.prose strong{color:var(--ink)}
.prose blockquote{margin:28px 0;padding:16px 20px;background:var(--teal-soft);border-left:5px solid var(--teal);border-radius:0 10px 10px 0}
.prose blockquote p{margin:0}
.prose table{width:100%;border-collapse:collapse;margin:24px 0;font-size:16px;display:block;overflow-x:auto}
.prose thead th{background:var(--band);color:var(--band-fg);text-align:left;padding:12px 14px;font-weight:700}
.prose td{padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}
.prose tbody tr:nth-child(even){background:var(--accent-soft)}
.prose hr{border:0;border-top:1px solid var(--line);margin:40px 0}
.prose em{color:var(--muted)}
.email{font-family:var(--display);font-size:28px;font-weight:700;color:var(--accent)}
.related .section-title,.related h2{font-family:var(--display);font-size:30px;margin:24px 0 18px}

/* Pie */
.foot{background:var(--band);color:#c9d3ce;padding-block:40px 24px;margin-top:24px}
.foot-in{display:flex;justify-content:space-between;gap:28px;flex-wrap:wrap}
.foot-in p{max-width:30em;font-size:16px}
.foot .logo{color:var(--band-fg)}
.foot nav{display:flex;flex-direction:column;gap:8px}
.foot nav a{color:var(--band-fg);text-decoration:none;font-size:16px}
.foot nav a:hover{color:#ff8a52}
.foot-copy{font-size:14px;margin-top:24px;opacity:.7}

@media (max-width:760px){
  body{font-size:17px}
  .hero-in{grid-template-columns:1fr}
  .hero{padding-block:40px 44px}
  .top nav{gap:16px}
  .grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* Resumen e índice */
.prose .resumen{background:var(--accent-soft);border:1px solid color-mix(in srgb,var(--accent) 30%,transparent);border-left:6px solid var(--accent);border-radius:12px;padding:18px 22px;margin:28px 0}
.prose .resumen p:first-child{font-family:var(--display);font-size:22px;margin:0 0 6px}
.prose .resumen ul{margin:0}
.toc{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:18px 22px;margin:4px 0 28px;max-width:68ch}
.toc-title{font-family:var(--display);font-weight:700;font-size:20px;margin:0 0 6px}
.toc ol{margin:0;padding-left:22px}
.toc li{font-size:16px;margin:4px 0}
.toc a{color:var(--ink);text-decoration:none}
.toc a:hover{color:var(--accent);text-decoration:underline}
.prose h2{scroll-margin-top:84px}
.card-art[data-cat="Salud"]{background:color-mix(in srgb,var(--teal-soft) 60%,var(--surface))}
.card-art[data-cat="Salud"]::after{background:var(--teal)}
.card-art[data-cat="Entrenamiento"]{background:color-mix(in srgb,var(--accent-soft) 70%,var(--surface))}
/* Categorías */
a.chip-lg{text-decoration:none;transition:background .15s,border-color .15s}
.hero a.chip-lg:hover{background:rgba(255,255,255,.18)}
.cat-head{padding:40px 0 8px}
.cat-head h1{margin:6px 0 8px}
.cat-head .hero-chips{margin-top:16px}
.cat-head .chip-lg{border:1px solid var(--line);color:var(--ink);background:var(--surface)}
.cat-head .chip-lg:hover{border-color:var(--accent)}
.cat-head .chip-on{background:var(--accent);border-color:var(--accent);color:#fff}
.crumbs a{color:inherit}
.cat-head .lead{color:var(--muted)}
.card-art[data-cat="Running"]{background:color-mix(in srgb,var(--accent-soft) 85%,var(--surface))}
.card-art[data-cat="Ciclismo"]{background:color-mix(in srgb,var(--teal-soft) 80%,var(--surface))}
.card-art[data-cat="Ciclismo"]::after{background:var(--teal)}