:root{
  --bg:#f3f4f6; --paper:#fafbfc; --ink:#1a1f2e; --muted:#5f6675;
  --brand:#1f3468; --brand-dark:#16254c; --accent:#e2211c; --sage:#1f3468;
  --line:#dde1e8; --shadow:0 10px 30px rgba(31,52,104,.12);
  --serif:"Fraunces",Georgia,serif; --sans:"Inter",system-ui,sans-serif;
}
*{box-sizing:border-box}
body{margin:0;font-family:var(--sans);color:var(--ink);background:var(--bg);line-height:1.55}
h1,h2,h3{font-family:var(--serif);font-weight:700;line-height:1.15;margin:0 0 .4em}
h1{font-size:clamp(2rem,5vw,3.2rem)} h2{font-size:clamp(1.5rem,3.5vw,2.1rem)} h3{font-size:1.35rem}
a{color:var(--brand)}
.wrap{max-width:1100px;margin:0 auto;padding:0 20px}
.narrow{max-width:680px;padding-top:40px;padding-bottom:60px}
.muted{color:var(--muted)}
.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.72rem;font-weight:600;color:var(--sage);margin:0 0 .6em}
.lead{font-size:1.2rem;color:var(--muted)}

/* header / footer */
.top{display:flex;justify-content:space-between;align-items:center;padding:14px 20px;max-width:1100px;margin:0 auto}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:600;font-size:.95rem}
.brand em{font-style:normal;color:var(--muted);font-weight:400}
.brand-logo{height:34px;width:auto;display:block}
.foot{text-align:center;color:var(--muted);font-size:.85rem;padding:40px 20px;border-top:1px solid var(--line);margin-top:40px}
.foot p{margin:4px 0}

/* buttons */
.btn{display:inline-block;background:var(--brand);color:#fff;text-decoration:none;font-weight:600;padding:12px 22px;border-radius:2px;border:0;cursor:pointer;font-family:var(--sans);font-size:1rem;transition:transform .15s,background .15s}
.btn:hover{background:var(--brand-dark);transform:translateY(-1px)}
.btn-lg{padding:16px 32px;font-size:1.1rem}
.btn-sm{padding:8px 16px;font-size:.9rem}
.btn-block{width:100%}
.btn-ghost{background:transparent;color:var(--brand);border:2px solid var(--brand)}
.btn-ghost:hover{background:rgba(31,52,104,.08);color:var(--brand-dark)}
button:disabled{opacity:.3;cursor:default}

/* hero */
.hero{padding:40px 0 60px}
.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center}
.thanks{background:#fff;border-left:4px solid var(--accent);padding:14px 18px;border-radius:0 10px 10px 0;font-style:italic;color:var(--muted)}
.compiladora{color:var(--muted);margin:0 0 14px}
/* marquesina */
.marquee{overflow:hidden;background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:14px 0;white-space:nowrap}
.marquee-track{display:inline-flex;align-items:center;gap:22px;animation:marquee 60s linear infinite;will-change:transform}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee span{font-family:var(--serif);font-size:1.05rem;color:var(--brand);font-weight:500}
.marquee i{color:var(--accent);font-style:normal;font-size:.7rem}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@media(prefers-reduced-motion:reduce){.marquee-track{animation:none;flex-wrap:wrap;white-space:normal;justify-content:center;padding:0 20px}.marquee span[aria-hidden],.marquee i[aria-hidden]{display:none}}
.cta-row{display:flex;gap:14px;flex-wrap:wrap;align-items:center;margin:20px 0 10px}
.precio{color:var(--muted);font-size:.95rem}
.cover{width:min(340px,80vw);aspect-ratio:2/3;margin:0 auto;border-radius:6px 14px 14px 6px;box-shadow:var(--shadow),inset 8px 0 14px -8px rgba(0,0,0,.35);overflow:hidden;background:#fff;transform:rotate(-2deg)}
.cover img{width:100%;height:100%;object-fit:cover;display:block}
.cover.small{width:150px;transform:none}
.hero-book{width:min(360px,82vw);height:auto;display:block;margin:0 auto;transform:rotate(-3deg)}
.cover-placeholder{height:100%;display:flex;flex-direction:column;justify-content:center;padding:28px;background:linear-gradient(160deg,var(--brand) 0%,var(--brand-dark) 70%);color:#fff;text-align:center}
.cover-placeholder span{font-family:var(--serif);font-size:1.6rem;font-weight:700;line-height:1.2}
.cover-placeholder small{margin-top:10px;opacity:.85}

/* movilizador */
.movil{background:var(--brand);color:#fff;padding:50px 0;text-align:center}
.movil-text{font-family:var(--serif);font-size:clamp(1.25rem,2.6vw,1.7rem);max-width:800px;margin:0 auto 24px;line-height:1.4}
.meta{max-width:560px;margin:0 auto;font-size:.95rem;opacity:.9}
.bar{height:12px;border-radius:999px;background:rgba(255,255,255,.18);overflow:hidden}
.bar span{display:block;height:100%;background:#fff;border-radius:999px;transition:width .6s}
.meta-simple{opacity:.85}

/* libro virtual */
.libro-section{padding:70px 0 40px;text-align:center}
.book{position:relative;max-width:560px;margin:30px auto 0;perspective:1600px}
.book-pages{position:relative;aspect-ratio:3/4;max-height:720px}
.page{position:absolute;inset:0;background:var(--paper);border-radius:4px 14px 14px 4px;box-shadow:var(--shadow);transform-origin:left center;transition:transform .6s cubic-bezier(.4,0,.2,1),opacity .4s;opacity:0;pointer-events:none;transform:rotateY(-100deg)}
.page.active{opacity:1;pointer-events:auto;transform:none;z-index:2}
.page.left{transform:rotateY(-100deg);opacity:0}
.page.right{transform:rotateY(0) translateX(12px) scale(.98);opacity:0}
.page::before{content:"";position:absolute;left:0;top:0;bottom:0;width:18px;background:linear-gradient(90deg,rgba(0,0,0,.14),transparent);border-radius:4px 0 0 4px}
.page-inner{padding:34px 30px 34px 40px;height:100%;overflow:auto;text-align:left}
.page-cover{text-align:center;display:flex;flex-direction:column;align-items:center;justify-content:center}
.page-cover img{max-height:40%;border-radius:4px;box-shadow:var(--shadow);margin-bottom:18px}
.sinopsis{font-size:.92rem;color:var(--muted)}
.page-title{border-bottom:2px solid var(--brand);padding-bottom:8px;margin-bottom:16px}
.page-title small{font-weight:400;color:var(--muted);font-size:.8rem}
.indice{padding-left:0;margin:0;list-style:none}
.indice li{margin-bottom:11px;display:grid;grid-template-columns:1fr auto;column-gap:10px;font-size:.92rem;line-height:1.3}
.indice li.seccion{margin-top:14px;padding-bottom:4px;border-bottom:1px solid var(--line)}
.indice li.seccion .cap-titulo{text-transform:uppercase;letter-spacing:.06em;font-size:.78rem;color:var(--brand)}
.indice li:first-child.seccion{margin-top:0}
.cap-titulo{font-weight:600}
.cap-autor{grid-column:1;font-size:.85rem;color:var(--sage)}
.cap-resumen{grid-column:1;font-size:.82rem;color:var(--muted)}
.cap-pag{grid-row:1;grid-column:2;color:var(--muted);font-variant-numeric:tabular-nums}
.page-proyecto img{width:100%;border-radius:8px;margin-bottom:14px;max-height:220px;object-fit:cover}
.book-nav{position:absolute;top:50%;transform:translateY(-50%);width:46px;height:46px;border-radius:2px;border:1px solid var(--line);background:#fff;font-size:1.6rem;cursor:pointer;z-index:3;box-shadow:var(--shadow)}
.book-nav.prev{left:-23px}.book-nav.next{right:-23px}
.book-counter{color:var(--muted);font-size:.85rem;margin-top:12px}

/* colaboradores, cta */
.colab{padding:30px 0;text-align:center}
.chips{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.chips span{background:#fff;border:1px solid var(--line);padding:5px 14px;border-radius:999px;font-size:.88rem}
.cta-final{background:linear-gradient(135deg,#e4e8f0,#f3f4f6);text-align:center;padding:60px 0;margin-top:30px}
.cta-final p{max-width:560px;margin:0 auto 22px}

/* forms & cards */
.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:28px;box-shadow:var(--shadow);margin:24px 0}
.field{margin-bottom:16px}
.field label{display:block;font-weight:500;font-size:.9rem;margin-bottom:6px}
.input,input[type=text],input[type=email],input[type=number],input[type=date],input[type=file],textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font:inherit;background:var(--paper)}
.input:focus,textarea:focus{outline:2px solid var(--brand);border-color:transparent}
.check{display:flex;gap:10px;align-items:flex-start;font-size:.9rem;margin:10px 0 20px}
.hint{color:var(--muted);font-size:.82rem;display:block;margin-top:6px;word-break:break-all}
.error{color:#c0392b;font-size:.82rem;display:block;margin-top:4px}
.alert{padding:14px 18px;border-radius:12px;margin:16px 0;background:#fff;border:1px solid var(--line)}
.alert-success{border-color:#bfe3cf;background:#edf8f1}
.alert-info{border-color:#c7d0e6;background:#eef1f8}
.alert-error{border-color:#f0b9b0;background:#fdf0ee}

/* pago */
.pago .monto{display:flex;flex-direction:column;align-items:center;text-align:center;padding-bottom:18px;border-bottom:1px dashed var(--line);margin-bottom:18px}
.pago .monto strong{font-family:var(--serif);font-size:2.4rem;color:var(--brand)}
.pago .monto em{font-style:normal;color:var(--muted);font-size:1.1rem}
.datos{margin:0;display:grid;gap:10px}
.datos div{display:grid;grid-template-columns:120px 1fr;align-items:center}
.datos dt{color:var(--muted);font-size:.85rem}
.datos dd{margin:0;font-weight:600;font-size:1.1rem}
.copybtn{margin-left:8px;font-size:.72rem;border:1px solid var(--line);background:#fff;border-radius:2px;padding:2px 10px;cursor:pointer;vertical-align:middle}
.otras{margin-top:14px;font-size:.9rem}

/* descarga + tarjeta */
.descarga{display:grid;grid-template-columns:auto 1fr;gap:24px;align-items:center}
.tarjeta{background:#fff;border-radius:18px;overflow:hidden;box-shadow:var(--shadow);margin:28px 0;border:6px solid var(--brand)}
.tarjeta>img{width:100%;max-height:300px;object-fit:cover;display:block}
.tarjeta-body{padding:28px 30px 10px}
.tarjeta .firma{font-family:var(--serif);font-style:italic;color:var(--muted)}
.tarjeta>.btn-ghost{margin:0 30px 24px}

@media(max-width:800px){
  .hero-grid{grid-template-columns:1fr;text-align:center}
  .autores,.cta-row{justify-content:center}
  .hero-cover{order:-1}
  .descarga{grid-template-columns:1fr;text-align:center}
  .book-nav.prev{left:6px}.book-nav.next{right:6px}
  .datos div{grid-template-columns:1fr}
}

/* QR */
.qr-block{text-align:center;margin:0 0 18px}
.qr-img{width:180px;height:180px;margin:0 auto 8px;display:block;border:8px solid #fff;border-radius:10px;box-shadow:var(--shadow);background:#fff}
.qr-img img,.qr-img canvas{display:block;width:100%;height:100%}
.lead-card{font-family:var(--serif);font-size:1.3rem;margin:-6px 0 12px;color:var(--brand)}

/* transparencia */
.tr-wrap{max-width:1000px;margin:0 auto;padding:30px 20px 60px}
.kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;margin:20px 0}
.kpi{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px}
.kpi span{display:block;font-size:.78rem;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.kpi strong{display:block;font-family:var(--serif);font-size:1.7rem;color:var(--brand);line-height:1.2}
.kpi small{display:block;font-size:.8rem}
.tbl{width:100%;border-collapse:collapse;background:#fff;border-radius:12px;overflow:hidden;font-size:.9rem;margin:10px 0 30px}
.tbl th,.tbl td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left}
.tbl th{background:var(--paper);font-weight:600;font-size:.8rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.tbl td.num,.tbl th.num{text-align:right;font-variant-numeric:tabular-nums}
.badge{display:inline-block;padding:2px 10px;border-radius:999px;font-size:.75rem;color:#fff;background:#9aa0a6}
.badge-revision{background:#e6a700}.badge-aprobado{background:#2e8b57}.badge-rechazado{background:#c0392b}
.bars{display:grid;gap:8px}
.bars div{display:grid;grid-template-columns:120px 1fr 90px;align-items:center;gap:10px;font-size:.88rem}
.bars i{display:block;height:14px;background:var(--brand);border-radius:7px}
.privado{background:#eef1f8;border:1px solid #c7d0e6;border-radius:10px;padding:10px 14px;font-size:.85rem}

.metodos{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.metodo{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:4px;padding:12px 14px;background:var(--paper);cursor:pointer;font-weight:500}
.metodo:has(input:checked){border-color:var(--brand);background:#eef1f8;box-shadow:inset 0 0 0 1px var(--brand)}
.metodo input{margin:0 8px 0 0;accent-color:var(--brand)}
.meta-nota{font-size:.85rem;opacity:.75;margin-top:10px}
@media(max-width:600px){.metodos{grid-template-columns:1fr}}