/* ============================================================
   Las Bases del Mercado. Guía Visual de SMC
   Mobile-first. Paleta: petróleo profundo + teal + naranja de acción.
   Proporción: ~65% claros/neutros, ~25% petróleo/teal, ~10% naranja.
   ============================================================ */

:root{
  --dark-900:#0d2024;
  --dark-800:#102a2e;
  --dark-700:#12363a;
  --petroleo:#155e63;
  --teal:#1f8986;
  --teal-light:#45aaa5;
  --teal-600:#177173;
  --teal-700:#0f5658;
  --orange:#f28a25;
  --orange-600:#d96f12;
  --ink:#182326;
  --ink-soft:#3d4c50;
  --paper:#f5f1e8;
  --paper-2:#eaf0ef;
  --white:#ffffff;
  --white-soft:#f8faf9;
  --muted:#9fb2b3;
  --muted-dark:#5f7274;
  --line:#e0e3dc;
  --line-dark:rgba(255,255,255,.12);
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 10px 30px rgba(13,32,36,.10);
  --shadow-lg:0 24px 60px rgba(13,32,36,.18);
  --wrap:1120px;
  --narrow:760px;
  --font-head:"Montserrat",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-body:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--white);
  line-height:1.6;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--teal-600);text-decoration:none}
h1,h2,h3{font-family:var(--font-head);line-height:1.15;margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:clamp(1.95rem,6vw,3.2rem);font-weight:900}
h2{font-size:clamp(1.5rem,4.5vw,2.3rem);font-weight:800}
h3{font-size:1.15rem;font-weight:700}
p{margin:0 0 1rem}
strong{font-weight:700}

.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:20px}
.narrow{max-width:var(--narrow);margin-inline:auto}
.center{text-align:center}
.small{font-size:.85rem}
.muted{color:var(--muted-dark)}
.lead{font-size:1.12rem;color:var(--ink-soft)}

.skip-link{position:absolute;left:-999px;top:0;background:var(--orange);color:#182326;padding:10px 16px;border-radius:0 0 8px 0;z-index:200;font-weight:700}
.skip-link:focus{left:0}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  font-family:var(--font-head);font-weight:700;font-size:1rem;
  padding:15px 28px;border-radius:999px;border:2px solid transparent;
  cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,background .15s ease,color .15s ease;
  text-align:center;line-height:1.2;
}
.btn:focus-visible{outline:3px solid var(--orange);outline-offset:3px}
.btn-primary{background:var(--orange);color:#182326;box-shadow:0 8px 22px rgba(242,138,37,.30)}
.btn-primary:hover{background:var(--orange-600);color:#fff;transform:translateY(-2px)}
.btn-outline{background:transparent;color:var(--petroleo);border-color:var(--petroleo)}
.btn-outline:hover{background:var(--petroleo);color:#fff;transform:translateY(-2px)}
.btn-ghost{background:transparent;border-color:var(--line-dark);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.1)}
.btn-link{background:transparent;color:inherit;text-decoration:underline;padding:14px 8px;border:0}
.btn-sm{padding:9px 18px;font-size:.9rem}
.btn-lg{padding:18px 32px;font-size:1.12rem}
.btn-block{display:flex;width:100%}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(13,32,36,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line-dark)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding-block:12px}
.brand{display:flex;align-items:center;gap:12px;color:#fff}
.brand-mark{display:flex}
.brand-mark svg{width:44px;height:44px}
.brand-text{font-family:var(--font-head);font-weight:700;font-size:1.12rem;color:#fff;letter-spacing:.01em}
.header-cta{color:#fff}

/* ---------- Hero ---------- */
.hero{background:radial-gradient(1200px 600px at 70% -10%,rgba(69,170,165,.16),transparent 60%),radial-gradient(700px 420px at 88% 8%,rgba(242,138,37,.12),transparent 62%),linear-gradient(180deg,var(--dark-900),var(--dark-800));color:#fff;padding:46px 0 42px}
.hero-grid{display:grid;gap:24px}
.hero-head,.hero-rest{align-self:center}
.eyebrow{display:inline-block;font-family:var(--font-head);font-weight:700;font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--teal-light);background:rgba(69,170,165,.1);border:1px solid rgba(69,170,165,.3);padding:6px 14px;border-radius:999px;margin-bottom:16px}
.eyebrow--teal{color:var(--teal-light);background:rgba(69,170,165,.12)}
.hero-head h1{color:#fff;max-width:16ch}
.hero-sub{font-size:1.14rem;color:#cfdcda;max-width:44ch}
.hero-sub strong{color:#fff}
.hero-bullets{list-style:none;padding:0;margin:22px 0;display:grid;gap:10px}
.hero-bullets li{position:relative;padding-left:30px;color:#dbe6e4}
.hero-bullets li::before{content:"";position:absolute;left:0;top:7px;width:15px;height:15px;border-radius:4px;background:var(--teal-light);box-shadow:0 0 0 4px rgba(69,170,165,.16)}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:8px}
.hero-note{margin-top:16px;font-size:.82rem;color:var(--muted)}
.hero-media{position:relative;display:flex;justify-content:center;align-items:center;padding:6px 0 2px;min-height:290px}
.hero-glow{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:min(440px,94%);aspect-ratio:1/1;border-radius:50%;background:radial-gradient(circle at 50% 42%,rgba(69,170,165,.30),rgba(69,170,165,0) 60%),radial-gradient(circle at 58% 66%,rgba(242,138,37,.24),rgba(242,138,37,0) 58%);filter:blur(4px);z-index:0}
.hero-ring{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:min(360px,80%);aspect-ratio:1/1;border-radius:50%;border:1px solid rgba(69,170,165,.22);box-shadow:0 0 0 16px rgba(69,170,165,.05);z-index:0}
.hero-stack{position:relative;z-index:1;max-width:min(370px,88%);filter:drop-shadow(0 26px 46px rgba(0,0,0,.55))}

/* ---------- Stats ---------- */
.stats{background:var(--petroleo);color:#fff;border-block:1px solid rgba(255,255,255,.1)}
.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;padding-block:28px}
.stat{text-align:center}
.stat-num{display:block;font-family:var(--font-head);font-weight:900;font-size:2.1rem;color:var(--orange);line-height:1.05}
.stat-num .plus{color:var(--teal-light)}
.stat-label{font-size:.85rem;color:#d7e4e2}

/* ---------- Sections ---------- */
.section{padding:56px 0}
.section-alt{background:var(--paper)}
.section-head{text-align:center;margin-bottom:34px}
.section-head .lead{margin-inline:auto;max-width:60ch}

/* Feature row */
.feature-row,.format-grid{display:grid;gap:18px;margin-top:28px}
.feature,.format-item{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.section-alt .feature,.section-alt .format-item{background:#fff}
.feature-ico{font-size:1.8rem;display:block;margin-bottom:8px}
.feature h3,.format-item h3{margin-bottom:.35em}
.feature p,.format-item p{margin:0;color:var(--ink-soft);font-size:.98rem}

/* Qué es (editorial) */
.material-grid{display:grid;gap:26px}
.material-intro .lead{max-width:58ch}
.benefit-list{list-style:none;padding:0;margin:0}
.benefit-list li{display:flex;gap:16px;align-items:flex-start;padding:18px 0;border-top:1px solid var(--line)}
.benefit-list li:first-child{border-top:0;padding-top:0}
.benefit-ico{font-size:1.6rem;flex:none;line-height:1.3}
.benefit-list h3{margin-bottom:.2em;font-size:1.08rem}
.benefit-list p{margin:0;color:var(--ink-soft);font-size:.98rem}

/* Formato (faixa) */
.format-strip{list-style:none;margin:28px 0 0;padding:0;display:grid;grid-template-columns:1fr 1fr;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.format-strip li{padding:24px 16px;text-align:center;border-top:1px solid var(--line);border-left:1px solid var(--line)}
.format-strip li:nth-child(1),.format-strip li:nth-child(2){border-top:0}
.format-strip li:nth-child(odd){border-left:0}
.format-strip .feature-ico{display:block;margin:0 auto 8px}
.format-strip h3{margin-bottom:.3em;font-size:1.02rem}
.format-strip p{margin:0;color:var(--ink-soft);font-size:.9rem}

/* Check lists */
.check-list,.cross-list{list-style:none;padding:0;margin:20px 0;display:grid;gap:12px}
.check-list li,.cross-list li{position:relative;padding-left:32px}
.check-list li::before{content:"✓";position:absolute;left:0;top:0;width:22px;height:22px;border-radius:50%;background:rgba(31,137,134,.15);color:var(--teal-600);font-weight:800;font-size:.8rem;display:flex;align-items:center;justify-content:center}
.check-list--neutral li::before{content:"•";background:rgba(242,138,37,.16);color:var(--orange-600);font-size:1.2rem}
.check-list--light li{color:#dbe6e4}
.check-list--light li::before{background:rgba(69,170,165,.22);color:var(--teal-light)}
.cross-list li::before{content:"✕";position:absolute;left:0;top:0;width:22px;height:22px;border-radius:50%;background:rgba(150,96,54,.14);color:#8a5a3c;font-weight:800;font-size:.75rem;display:flex;align-items:center;justify-content:center}

/* ---------- Ruta ---------- */
.route{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.route-step{display:flex;gap:18px;align-items:flex-start;background:var(--white);border:1px solid var(--line);border-left:4px solid var(--teal);border-radius:var(--radius-sm);padding:20px 22px;box-shadow:0 6px 18px rgba(13,32,36,.07)}
.route-num{flex:none;width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,var(--petroleo),var(--dark-800));color:var(--teal-light);font-family:var(--font-head);font-weight:900;font-size:1.25rem;display:flex;align-items:center;justify-content:center}
.route-step h3{margin-bottom:.25em;font-size:1.1rem}
.route-step p{margin:0;color:var(--ink-soft);font-size:.96rem}
.route-foot{text-align:center;color:var(--ink-soft);margin-top:20px}
.route + .route-foot{margin-top:22px}
.section .center{margin-top:30px}

/* ---------- Conceptos ---------- */
.concept-grid{display:grid;gap:26px 30px;grid-template-columns:1fr}
.concept-card{background:transparent;border:0;border-top:2px solid rgba(31,137,134,.4);border-radius:0;padding:16px 2px 4px;box-shadow:none}
.concept-card h3{color:var(--petroleo);font-size:1.02rem;margin-bottom:12px;letter-spacing:.01em}
.concept-card ul{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:7px}
.concept-card li{font-family:var(--font-head);font-weight:600;font-size:.78rem;background:rgba(21,94,99,.08);color:var(--petroleo);padding:5px 11px;border-radius:999px}

/* ---------- Previews ---------- */
.preview-grid{display:grid;grid-auto-flow:column;grid-auto-columns:84%;gap:14px;overflow-x:auto;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;margin-inline:-20px;padding:4px 20px 16px;scrollbar-width:thin}
.preview{margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:0 6px 18px rgba(13,32,36,.08);scroll-snap-align:center}
.preview-btn{display:block;width:100%;border:0;padding:0;margin:0;background:var(--dark-900);cursor:zoom-in;position:relative;overflow:hidden;line-height:0}
.preview-btn img{width:100%;border-bottom:1px solid var(--line);transition:transform .3s ease}
.preview-btn:hover img{transform:scale(1.05)}
.preview-btn:focus-visible{outline:3px solid var(--orange);outline-offset:-3px}
.preview-zoom{position:absolute;right:10px;bottom:10px;background:rgba(13,32,36,.82);color:#fff;font-family:var(--font-head);font-weight:600;font-size:.72rem;line-height:1;letter-spacing:.02em;padding:6px 11px;border-radius:999px;display:inline-flex;align-items:center;gap:5px;opacity:.94}
.preview-zoom::before{content:"\2922";font-size:.85rem}
.preview figcaption{padding:12px 14px;font-size:.85rem;color:var(--ink-soft);text-align:center}

/* ---------- Lightbox ---------- */
.lightbox{position:fixed;inset:0;z-index:1000;background:rgba(8,18,20,.95);display:flex;align-items:center;justify-content:center;padding:20px}
.lightbox[hidden]{display:none}
body.lb-open{overflow:hidden}
.lb-figure{margin:0;max-width:min(94vw,920px);display:flex;flex-direction:column;align-items:center;gap:12px}
.lb-img{max-width:100%;max-height:78vh;width:auto;height:auto;border-radius:8px;box-shadow:0 20px 60px rgba(0,0,0,.6);background:#fff}
.lb-caption{color:#e8efed;font-size:.92rem;text-align:center;display:flex;gap:12px;align-items:center;justify-content:center;flex-wrap:wrap}
.lb-counter{color:#93a7a6;font-size:.82rem}
.lb-close{position:absolute;top:12px;right:16px;background:transparent;border:0;color:#fff;font-size:2.4rem;line-height:1;cursor:pointer;width:48px;height:48px}
.lb-nav{position:absolute;top:50%;transform:translateY(-50%);background:rgba(255,255,255,.12);border:0;color:#fff;font-size:2rem;width:52px;height:52px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .15s}
.lb-nav:hover{background:rgba(255,255,255,.24)}
.lb-prev{left:14px}
.lb-next{right:14px}
.lb-close:focus-visible,.lb-nav:focus-visible{outline:3px solid var(--orange);outline-offset:2px}
@media (max-width:560px){.lb-nav{width:44px;height:44px;font-size:1.6rem}.lb-prev{left:6px}.lb-next{right:6px}.lb-img{max-height:72vh}.lb-close{top:6px;right:8px}}

/* ---------- Para quién ---------- */
.fit-grid{display:grid;gap:18px}
.fit-card{border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.fit-yes{background:#fff;border:1px solid var(--line);border-top:5px solid var(--teal)}
.fit-no{background:#fff;border:1px solid var(--line);border-top:5px solid #d3b083}
.fit-card h3{font-size:1.25rem;margin-bottom:.4em}

/* ---------- Producto principal (dark) ---------- */
.section-dark{background:linear-gradient(180deg,var(--dark-800),var(--dark-900));color:#fff}
.producto-grid{display:grid;gap:28px;align-items:center}
.producto-media{display:flex;justify-content:center}
.producto-media img{max-width:min(400px,86%);filter:drop-shadow(0 24px 44px rgba(0,0,0,.45))}
.producto-copy h2{color:#fff}
.producto-copy p{color:#cfdcda}

/* ---------- Bonus ---------- */
.bonus-grid{display:grid;gap:20px;grid-template-columns:1fr}
.bonus-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column}
.bonus-card img{width:100%;background:var(--dark-900);padding:16px;height:230px;object-fit:contain}
.bonus-body{padding:18px 20px 22px;flex:1 1 auto}
.bonus-body h3{margin-bottom:.4em;font-size:1.05rem}
.bonus-body p{margin:0;color:var(--ink-soft);font-size:.94rem}

/* ---------- Testimonios ---------- */
.testi-grid{display:grid;gap:18px;grid-template-columns:1fr}
.testi{margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 24px 22px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:12px}
.testi-mark{font-family:var(--font-head);font-weight:900;font-size:2.6rem;line-height:.5;color:var(--orange);height:22px}
.testi blockquote{margin:0;color:var(--ink);font-size:1rem;line-height:1.55}
.testi figcaption{margin-top:auto;color:var(--muted-dark);font-family:var(--font-head);font-weight:600;font-size:.85rem}

/* ---------- Oferta ---------- */
.section-offer{background:radial-gradient(900px 500px at 50% 0,rgba(69,170,165,.1),transparent 55%),linear-gradient(180deg,var(--dark-900),var(--dark-800));color:#fff}
.section-offer .lead{color:#cfdcda}
.offer-card{background:#fff;color:var(--ink);border-radius:22px;overflow:hidden;box-shadow:var(--shadow-lg);display:grid;gap:0;grid-template-columns:1fr}
.offer-media{background:linear-gradient(160deg,var(--dark-800),var(--dark-900));display:flex;align-items:center;justify-content:center;padding:16px}
.offer-media img{width:92%;max-width:440px}
.offer-detail{padding:30px 26px 34px}
.offer-heading{font-size:1.1rem;color:var(--petroleo);margin-bottom:16px}
.offer-list{list-style:none;padding:0;margin:0 0 22px;display:grid;gap:10px}
.offer-list li{position:relative;padding-left:30px;font-size:.98rem}
.offer-list li::before{content:"✓";position:absolute;left:0;top:1px;width:20px;height:20px;border-radius:50%;background:rgba(31,137,134,.16);color:var(--teal-600);font-weight:800;font-size:.75rem;display:flex;align-items:center;justify-content:center}
.price-box{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:22px;text-align:center;margin-bottom:20px;position:relative}
.price-box::before{content:"";position:absolute;left:0;top:0;width:100%;height:4px;background:var(--orange)}
.price-ref{display:inline-block;color:var(--muted-dark);text-decoration:line-through;font-size:1rem;margin-bottom:4px}
.price-now{display:flex;align-items:flex-start;justify-content:center;gap:4px;margin:2px 0 10px;line-height:1}
.price-cur{font-family:var(--font-head);font-weight:800;font-size:1.4rem;color:var(--orange-600);margin-top:8px}
.price-val{font-family:var(--font-head);font-weight:900;font-size:3.6rem;color:var(--dark-900)}
.price-micro{font-size:.82rem;color:var(--ink-soft);margin:0}
.offer-safe{text-align:center;font-size:.82rem;color:var(--muted-dark);margin:12px 0 0}

/* ---------- Garantía (continuación de la oferta) ---------- */
.section-offer{padding-bottom:38px}
#garantia{padding-top:30px}
.guarantee{display:flex;gap:20px;align-items:center;flex-direction:column;text-align:center;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:24px 26px;box-shadow:var(--shadow)}
.guarantee-seal{width:118px;flex:none}
.guarantee h2{font-size:1.35rem;margin-bottom:.3em}
.guarantee p{margin:0}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:12px;margin-top:24px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;box-shadow:var(--shadow)}
.faq-item summary{cursor:pointer;list-style:none;padding:18px 46px 18px 20px;font-family:var(--font-head);font-weight:600;font-size:1rem;position:relative}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);font-size:1.5rem;color:var(--orange-600);font-weight:400;transition:transform .2s}
.faq-item[open] summary::after{content:"−"}
.faq-item summary:focus-visible{outline:3px solid var(--orange);outline-offset:-3px}
.faq-a{padding:0 20px 18px;color:var(--ink-soft)}
.faq-a p{margin:0}

/* ---------- Aviso ---------- */
.aviso{background:var(--dark-900);color:#c6d3d1;padding:44px 0}
.aviso-title{color:#fff;font-size:1.3rem}
.aviso p{color:#b0c0be;font-size:.95rem}

/* ---------- Footer ---------- */
.site-footer{background:#081619;color:#9fb2b3;padding:44px 0 26px;font-size:.9rem}
.footer-grid{display:grid;gap:26px}
.footer-logo{width:210px;height:auto;margin-bottom:6px}
.footer-small{font-size:.82rem;color:#7d9190;margin-top:8px}
.footer-links{display:grid;gap:10px}
.footer-links a{color:#c6d3d1}
.footer-links a:hover{color:var(--teal-light)}
.footer-company p{margin:0 0 4px}
.footer-company a{color:var(--teal-light)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);margin-top:24px;padding-top:18px;display:flex;flex-direction:column;gap:6px}
.footer-bottom p{margin:0}

/* ============================================================
   Tablet
   ============================================================ */
@media (min-width:680px){
  .stats-grid{grid-template-columns:repeat(4,1fr)}
  .feature-row{grid-template-columns:repeat(3,1fr)}
  .concept-grid{grid-template-columns:repeat(2,1fr)}
  .fit-grid{grid-template-columns:1fr 1fr}
  .bonus-grid{grid-template-columns:repeat(2,1fr)}
  .testi-grid{grid-template-columns:repeat(3,1fr)}
  .guarantee{flex-direction:row;text-align:left}
  .footer-grid{grid-template-columns:1.6fr 1fr}
  .footer-bottom{flex-direction:row;justify-content:space-between;align-items:center}
  .material-grid{grid-template-columns:1.05fr .95fr;align-items:start;gap:40px}
  .format-strip{grid-template-columns:repeat(4,1fr)}
  .format-strip li{border-top:0;border-left:1px solid var(--line)}
  .format-strip li:first-child{border-left:0}
  .preview-grid{grid-auto-flow:row;grid-template-columns:1fr 1fr;grid-auto-columns:auto;max-width:900px;margin-inline:auto;overflow:visible;gap:22px;padding:0}
}

/* ============================================================
   Desktop
   ============================================================ */
@media (min-width:920px){
  .section{padding:76px 0}
  .hero{padding:70px 0 62px}
  .hero-grid{grid-template-columns:1.08fr .92fr;grid-template-areas:"head media" "rest media";column-gap:36px;row-gap:12px;align-items:center}
  .hero-head{grid-area:head;align-self:end}
  .hero-rest{grid-area:rest;align-self:start}
  .hero-media{grid-area:media;min-height:auto}
  .hero-stack{max-width:440px}
  .concept-grid{grid-template-columns:repeat(3,1fr)}
  .bonus-grid{grid-template-columns:repeat(3,1fr)}
  .producto-grid{grid-template-columns:1fr 1.12fr}
  .producto-media img{max-width:420px}
  .offer-card{grid-template-columns:.9fr 1.1fr;align-items:stretch}
  .offer-media{padding:22px}
  .offer-media img{width:100%;max-width:400px}
}

/* Reduced motion */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none!important}
}