/* 7 días de Criterio · Piqui Media */
:root{
  --bg:#090d11; --panel:#10161c; --line:#232c35; --fg:#f2efe8; --muted:#9aa4ae; --acc:#c9b48c; --acc-ink:#090d11; --err:#e08a7e;
  --sans:'Montserrat',system-ui,-apple-system,'Segoe UI',sans-serif;
  color-scheme:dark;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--sans);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased}
img,video{max-width:100%;display:block}
a{color:var(--acc)}
.wrap{max-width:1080px;margin:0 auto;padding-left:max(20px,env(safe-area-inset-left));padding-right:max(20px,env(safe-area-inset-right))}
.narrow{max-width:720px}
header.site{padding-block:24px;border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;justify-content:space-between;align-items:center;gap:16px}
header.site img{height:40px;width:auto}
header.site a.back{font-size:14px;color:var(--muted);text-decoration:none}
.eyebrow{font-size:12px;letter-spacing:.24em;text-transform:uppercase;color:var(--muted);margin:0 0 16px}
.eyebrow b{color:var(--acc);font-weight:600}
h1{font-weight:300;font-size:clamp(44px,8vw,88px);line-height:1;letter-spacing:-.02em;margin:0 0 24px;text-wrap:balance}
h1 em,h2 em{font-style:normal;color:var(--acc)}
h2{font-weight:400;font-size:clamp(28px,4.4vw,44px);line-height:1.12;letter-spacing:-.01em;margin:0 0 20px;text-wrap:balance}
h3{font-weight:600;font-size:18px;margin:0 0 6px}
.lead{font-size:clamp(18px,2.2vw,22px);font-weight:300;color:var(--fg);max-width:36ch;margin:0 0 32px}
.muted{color:var(--muted)}
section{padding-block:72px;border-bottom:1px solid var(--line)}
.hero{padding-block:72px 64px}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.hero-img{border-radius:6px;overflow:hidden;aspect-ratio:4/5;background:var(--panel);border:1px solid var(--line)}
.hero-img img{width:100%;height:100%;object-fit:cover}
.facts{display:flex;flex-wrap:wrap;gap:12px 28px;font-size:14px;color:var(--muted);margin-top:28px}
.facts span b{color:var(--fg);font-weight:600}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:52px;padding:0 28px;border-radius:999px;background:var(--fg);color:var(--acc-ink);font:600 15px var(--sans);letter-spacing:.02em;text-decoration:none;border:0;cursor:pointer}
.btn:hover{background:#fff}
.btn.ghost{background:transparent;color:var(--fg);border:1px solid var(--line)}
.btn[disabled]{opacity:.5;cursor:wait}
:focus-visible{outline:2px solid var(--acc);outline-offset:3px}
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border-top:1px solid var(--line)}
.steps > div{padding:28px 28px 28px 0;border-bottom:1px solid var(--line)}
.steps .n{font-size:13px;letter-spacing:.2em;color:var(--acc);font-weight:600;display:block;margin-bottom:12px}
.days{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.day{background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:20px 24px;display:flex;gap:18px;align-items:baseline}
.day .n{font-size:12px;letter-spacing:.2em;color:var(--acc);font-weight:600;white-space:nowrap}
.day.last{grid-column:1/-1;background:var(--fg);color:var(--acc-ink);border-color:var(--fg)}
.day.last .n{color:#8a7348}
.checks{list-style:none;padding:0;margin:0;display:grid;gap:18px}
.checks li{display:flex;gap:18px;align-items:flex-start;font-size:19px}
.checks li::before{content:"";flex:none;width:28px;height:1.5px;background:var(--acc);margin-top:15px}
.guide{display:grid;grid-template-columns:auto 1fr;gap:40px;align-items:start}
.stat{display:flex;gap:24px;align-items:baseline;padding:20px 0;border-top:1px solid var(--line)}
.stat b{font-weight:300;font-size:44px;color:var(--acc);min-width:90px;line-height:1}
form .grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 20px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1/-1}
label{font-size:13px;letter-spacing:.06em;color:var(--muted)}
input,select,textarea{width:100%;background:var(--panel);border:1px solid var(--line);border-radius:6px;color:var(--fg);font:400 16px/1.5 var(--sans);padding:14px 16px}
textarea{min-height:120px;resize:vertical}
input:focus,select:focus,textarea:focus{border-color:var(--acc);outline:none}
.consent{display:flex;gap:12px;align-items:flex-start;font-size:14px;color:var(--muted)}
.consent input{width:20px;height:20px;flex:none;margin-top:2px;accent-color:var(--acc)}
.box{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:clamp(24px,4vw,44px)}
.notice{border:1px solid var(--acc);border-radius:8px;padding:24px 28px}
.notice h3{color:var(--acc)}
.err{color:var(--err);font-size:14px;min-height:1.2em}
footer.site{padding-block:40px;color:var(--muted);font-size:14px}
footer.site .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;align-items:center}
footer.site img{height:34px;width:auto}
footer.site a{color:var(--muted)}
/* day pages */
.daynav{display:flex;gap:6px;flex-wrap:wrap;margin:0 0 28px}
.daynav a,.daynav span{min-width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;border-radius:999px;border:1px solid var(--line);color:var(--muted);text-decoration:none;font-size:14px;font-weight:500}
.daynav .on{background:var(--acc);border-color:var(--acc);color:var(--acc-ink)}
.daynav .done{border-color:var(--acc);color:var(--acc)}
.player{border-radius:8px;overflow:hidden;background:#000;max-width:420px;margin:0 auto 36px;aspect-ratio:9/16}
.player video{width:100%;height:100%}
.ex-group{display:grid;gap:20px}
.ex-help{font-size:14px;color:var(--muted);margin:-2px 0 0}
.cb{display:flex;gap:14px;align-items:flex-start;padding:14px 0;border-bottom:1px solid var(--line);font-size:16px;cursor:pointer}
.cb input{width:22px;height:22px;flex:none;accent-color:var(--acc);margin-top:1px}
.formula{font-size:20px;line-height:1.9;font-weight:300}
.dl{font-size:14px;color:var(--muted)}
.locked{text-align:center;padding-block:96px}
@media (max-width:820px){
  .hero-grid,.guide{grid-template-columns:1fr}
  .hero-img{max-width:420px}
  .steps{grid-template-columns:1fr}
  .days{grid-template-columns:1fr}
  form .grid{grid-template-columns:1fr}
  section{padding-block:56px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* Ejercicios: diagnóstico, decisión y aplicación. */
.exercise-brief{border-left:3px solid var(--acc);padding:22px 24px;background:var(--panel);margin:32px 0}.exercise-brief h2{font-size:clamp(26px,4vw,36px)}.exercise-brief p:last-child{margin-bottom:0}.ex-group label{color:var(--fg);font-size:15px;letter-spacing:0}.ex-help{margin:0;color:var(--muted);font-size:14px}.ex-example{margin:0;padding:12px 16px;border-left:2px solid var(--line);font-size:14px;line-height:1.65;color:var(--muted)}.ex-example b{color:var(--acc);font-weight:500}.exercise-more{border-top:1px solid var(--line);padding-top:18px}.exercise-more summary{color:var(--acc);cursor:pointer;font-weight:500;min-height:44px}.exercise-extra{display:grid;gap:26px;padding-top:20px}.exercise-links{display:flex;flex-wrap:wrap;gap:16px;margin-top:20px}