:root{
  --azul:#1E3A5F; --hueso:#F7F5F0; --salvia:#3DA17E; --carbon:#2B2B2B; --ambar:#E0A458;
  --salvia-osc:#2f7d62; --gris:#5a6472; --linea:#e3ded5; --cyan:#2bd4c4;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,sans-serif;color:var(--carbon);background:var(--hueso);line-height:1.6}
h1,h2,h3{font-family:'Fraunces',Georgia,serif;font-weight:600;color:var(--azul);line-height:1.15}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
section{padding:64px 0}
a{color:var(--salvia-osc);text-decoration:none}
.center{text-align:center}
.muted{color:var(--gris)}

/* Botones */
.btn{display:inline-block;padding:14px 26px;border-radius:10px;font-weight:600;cursor:pointer;border:none;font-size:1rem;transition:.15s;text-align:center}
.btn-wa{background:var(--salvia);color:#fff}
.btn-wa:hover{background:var(--salvia-osc)}
.btn-out{background:transparent;color:var(--azul);border:2px solid var(--azul)}
.btn-out:hover{background:var(--azul);color:#fff}

/* Botón CALCULA — estilo tecnológico/futurista */
.btn-calc{
  position:relative;display:inline-flex;align-items:center;gap:10px;
  background:linear-gradient(135deg,#1E3A5F 0%,#2f7d62 55%,#2bd4c4 100%);
  color:#fff;font-weight:700;letter-spacing:.02em;border:none;
  padding:15px 28px;border-radius:12px;cursor:pointer;font-size:1rem;
  box-shadow:0 0 0 1px rgba(43,212,196,.45), 0 8px 26px rgba(43,212,196,.35);
  overflow:hidden;transition:transform .18s ease, box-shadow .18s ease}
.btn-calc:hover{transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(43,212,196,.7), 0 12px 34px rgba(43,212,196,.55)}
.btn-calc .ic{font-size:1.2rem;filter:drop-shadow(0 0 6px rgba(43,212,196,.8))}
.btn-calc:after{content:"";position:absolute;top:0;left:-120%;width:60%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.45),transparent);
  transform:skewX(-20deg);animation:calcshine 3.2s ease-in-out infinite}
@keyframes calcshine{0%{left:-120%}55%{left:130%}100%{left:130%}}
.btn-calc-lg{font-size:1.12rem;padding:18px 34px}

/* Header */
header{position:sticky;top:0;background:rgba(247,245,240,.95);backdrop-filter:blur(6px);border-bottom:1px solid var(--linea);z-index:50}
.nav{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;max-width:1080px;margin:0 auto}
.logo{font-family:'Fraunces';font-weight:600;font-size:1.5rem;color:var(--azul);display:flex;align-items:center;gap:9px}
.logo-txt{color:var(--azul)}
.logo-txt span{color:var(--salvia)}
.logo-img{height:34px;width:auto;display:block}
.nav-links{display:flex;gap:22px;align-items:center}
.nav-links a{color:var(--azul);font-weight:500}
@media(max-width:820px){.nav-links a:not(.btn):not(.btn-calc){display:none}}

/* Hero */
.hero{background:linear-gradient(160deg,var(--azul) 0%,#16293f 100%);color:#fff;padding:72px 0}
.hero h1{color:#fff;font-size:2.6rem;margin-bottom:18px}
.hero p.claim{font-size:1.25rem;color:#d8e2ee;margin-bottom:14px}
.hero .badges{display:flex;gap:10px;flex-wrap:wrap;margin:24px 0}
.badge{background:rgba(255,255,255,.12);padding:8px 14px;border-radius:20px;font-size:.9rem}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
@media(max-width:820px){.hero-grid{grid-template-columns:1fr}.hero h1{font-size:2rem}}
.video-alex-box{position:relative;max-width:280px;margin:0 auto}
.video-alex{aspect-ratio:9/16;width:100%;display:block;background:#0f1d2e;border:1px solid rgba(255,255,255,.18);border-radius:16px;object-fit:cover}
.video-alex-msg{position:absolute;left:10px;right:10px;bottom:14px;background:rgba(15,29,46,.8);color:#fff;border-radius:12px;padding:9px 12px;font-size:.92rem;text-align:center;opacity:1;transition:opacity .4s}
.video-alex-cap{text-align:center;color:#9fb3c8;margin-top:10px}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:8px;align-items:center}

/* Paquetes */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:36px}
@media(max-width:820px){.cards{grid-template-columns:1fr}}
.card{background:#fff;border:1px solid var(--linea);border-radius:16px;padding:28px;display:flex;flex-direction:column}
.card.feat{border:2px solid var(--salvia);box-shadow:0 8px 30px rgba(61,161,126,.12)}
.card h3{font-size:1.25rem;margin-bottom:6px}
.dcto{font-family:'Fraunces';font-size:2rem;color:var(--salvia-osc);margin:10px 0}
.dcto span{display:block;font-family:'Inter',sans-serif;font-size:.85rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--salvia-osc)}
.aplica{background:#fff;border:1px solid var(--linea);border-left:4px solid var(--salvia);border-radius:12px;padding:22px 24px;margin-top:26px}
.aplica h3{color:var(--azul);font-size:1.15rem;margin-bottom:10px}
.aplica ul{list-style:none;margin:0 0 12px;padding:0}
.aplica li{margin:7px 0}
.aplica p{color:#555;margin-bottom:16px}
.card ul{list-style:none;margin:14px 0;flex:1}
.card li{padding:6px 0 6px 26px;position:relative;font-size:.95rem}
.card li:before{content:"✓";position:absolute;left:0;color:var(--salvia);font-weight:700}
.tag{display:inline-block;background:var(--salvia);color:#fff;font-size:.75rem;padding:3px 10px;border-radius:12px;margin-bottom:8px;width:max-content}

/* Pasos */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:30px}
@media(max-width:820px){.steps{grid-template-columns:1fr 1fr}}
.step{text-align:center}
.step .num{width:46px;height:46px;border-radius:50%;background:var(--azul);color:#fff;display:flex;align-items:center;justify-content:center;font-family:'Fraunces';font-size:1.3rem;margin:0 auto 12px}

/* Calculadora */
.calc-sec{background:#fff}
.calc{display:grid;grid-template-columns:1fr 1fr;gap:30px;margin-top:28px}
@media(max-width:820px){.calc{grid-template-columns:1fr}}
.field{margin-bottom:18px}
.field label{display:block;font-weight:600;margin-bottom:6px;color:var(--azul);font-size:.95rem}
.field select,.field input{width:100%;padding:12px;border:1px solid var(--linea);border-radius:9px;font-size:1rem;font-family:inherit;background:var(--hueso)}
.result{background:var(--hueso);border:1px solid var(--linea);border-radius:14px;padding:26px;min-height:200px}
.result .ph{color:var(--gris);text-align:center;padding:40px 10px}
.res-pkg{font-family:'Fraunces';font-size:1.4rem;color:var(--azul)}
.res-price{font-family:'Fraunces';font-size:1.6rem;color:var(--salvia-osc);margin:6px 0}
.res-line{display:flex;justify-content:space-between;padding:7px 0;border-bottom:1px dashed var(--linea);font-size:.95rem}
.flag{background:#fff4e2;border:1px solid var(--ambar);color:#8a5a1a;padding:12px;border-radius:9px;margin:12px 0;font-size:.9rem}
.disclaimer{font-size:.8rem;color:var(--gris);margin-top:10px}

/* FAQ */
.faq details{background:#fff;border:1px solid var(--linea);border-radius:10px;margin-bottom:10px;padding:0}
.faq summary{padding:16px 18px;font-weight:600;color:var(--azul);cursor:pointer;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";float:right;color:var(--salvia)}
.faq details[open] summary:after{content:"–"}
.faq .a{padding:0 18px 16px;color:var(--carbon)}

/* Equipo */
.equipo{display:flex;gap:30px;align-items:center;background:#fff;border:1px solid var(--linea);border-radius:16px;padding:30px;margin-top:24px}
@media(max-width:680px){.equipo{flex-direction:column;text-align:center}}
.equipo img{width:160px;height:160px;border-radius:14px;object-fit:cover;background:var(--linea)}

/* Footer */
footer{background:var(--azul);color:#cdd8e4;padding:48px 0 28px}
footer h4{color:#fff;font-family:'Fraunces';margin-bottom:10px}
footer a{color:#cdd8e4}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}
@media(max-width:680px){.foot-grid{grid-template-columns:1fr}}
.legal{font-size:.82rem;color:#9fb3c8;border-top:1px solid rgba(255,255,255,.15);margin-top:28px;padding-top:18px}

/* WhatsApp flotante */
.wa-float{position:fixed;bottom:22px;right:22px;background:var(--salvia);color:#fff;width:60px;height:60px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.7rem;box-shadow:0 6px 20px rgba(0,0,0,.25);z-index:60;text-decoration:none}

/* Página interior: encabezado de sección */
.page-head{background:linear-gradient(160deg,var(--azul) 0%,#16293f 100%);color:#fff;padding:54px 0}
.page-head h1{color:#fff;font-size:2.1rem;margin-bottom:8px}
.page-head p{color:#d8e2ee}
.back-link{display:inline-block;margin-bottom:26px;font-size:.9rem}

/* Chat "Pregúntale a Alex" */
#ac-btn{position:fixed;left:18px;bottom:18px;z-index:60;display:flex;align-items:center;gap:9px;background:var(--azul);color:#fff;border:0;border-radius:30px;padding:8px 16px 8px 8px;font-size:.92rem;font-weight:600;cursor:pointer;box-shadow:0 4px 14px rgba(0,0,0,.25)}
#ac-btn img{width:34px;height:34px;border-radius:50%;object-fit:cover;object-position:top}
#ac-panel{position:fixed;left:18px;bottom:80px;z-index:61;width:330px;max-width:calc(100vw - 36px);max-height:calc(100vh - 100px);background:#fff;border:1px solid var(--linea);border-radius:16px;box-shadow:0 10px 36px rgba(0,0,0,.28);display:flex;flex-direction:column;overflow:hidden}
#ac-panel[hidden]{display:none}
.ac-head{display:flex;align-items:center;gap:10px;background:var(--azul);color:#fff;padding:10px 12px}
.ac-head img{width:38px;height:38px;border-radius:50%;object-fit:cover;object-position:top}
.ac-head small{display:block;color:#c9d6e4;font-size:.72rem}
.ac-head button{margin-left:auto;background:none;border:0;color:#fff;font-size:1.1rem;cursor:pointer}
#ac-msgs{height:300px;min-height:120px;flex:1 1 auto;overflow-y:auto;padding:12px;background:var(--hueso);display:flex;flex-direction:column;gap:8px}
.ac-m{max-width:86%;padding:8px 11px;border-radius:12px;font-size:.88rem;line-height:1.4}
.ac-bot{background:#fff;border:1px solid var(--linea);border-bottom-left-radius:4px;align-self:flex-start}
.ac-user{background:var(--salvia);color:#fff;border-bottom-right-radius:4px;align-self:flex-end}
.ac-m a.ac-cta{display:block;margin-top:8px;background:var(--salvia);color:#fff;text-align:center;border-radius:8px;padding:7px;text-decoration:none;font-weight:600;font-size:.85rem}
#ac-chips{display:flex;gap:6px;flex-wrap:wrap;padding:8px 12px;border-top:1px solid var(--linea);background:#fff}
#ac-chips button{background:var(--hueso);border:1px solid var(--linea);border-radius:16px;padding:5px 10px;font-size:.78rem;cursor:pointer;color:var(--azul)}
#ac-form{display:flex;gap:6px;padding:8px 12px;background:#fff}
#ac-in{flex:1;border:1px solid var(--linea);border-radius:8px;padding:8px 10px;font-size:.9rem}
#ac-form button{background:var(--azul);color:#fff;border:0;border-radius:8px;padding:0 14px;font-size:1rem;cursor:pointer}
.ac-disc{font-size:.68rem;color:#999;text-align:center;padding:0 12px 8px;background:#fff;margin:0}
@media(max-width:480px){#ac-panel{left:10px;right:10px;width:auto;bottom:74px}#ac-btn{left:10px;bottom:12px}}