/* Zima Ingeniería — landing */
:root{
  --teal-dark:#1E6E6E; --teal-mid:#2B9090; --teal-light:#D0ECEC; --teal-row:#EAF5F5;
  --mint:#52CFA5; --gray:#444; --ink:#1d2b2b; --white:#fff; --wa:#25D366;
  --radius:16px; --shadow:0 10px 30px rgba(30,110,110,.12);
  --f-head:'Montserrat',system-ui,sans-serif; --f-body:'Open Sans',system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{margin:0;font-family:var(--f-body);color:var(--gray);background:var(--white);line-height:1.6;font-size:17px;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--teal-mid)}
h1,h2,h3,h4{font-family:var(--f-head);color:var(--ink);line-height:1.2;margin:0 0 .5em}
h1{font-size:clamp(2rem,5vw,3.3rem);font-weight:800;letter-spacing:-.02em}
h1 span{color:var(--teal-mid)}
h2{font-size:clamp(1.6rem,3.4vw,2.3rem);font-weight:800;letter-spacing:-.01em}
h3{font-size:1.12rem;font-weight:700}
p{margin:0 0 1em}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
.wrap.narrow{max-width:820px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.ic{width:1.25em;height:1.25em;flex:none;display:inline-block;vertical-align:middle}
.eyebrow{font-family:var(--f-head);font-weight:700;font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;color:var(--teal-mid);margin-bottom:.8em}
.eyebrow.light{color:var(--mint)}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.55em;font-family:var(--f-head);font-weight:700;text-decoration:none;border-radius:999px;border:2px solid transparent;cursor:pointer;transition:transform .15s,box-shadow .15s,background .15s;font-size:1rem;padding:.7em 1.3em;line-height:1}
.btn:hover{transform:translateY(-2px)}
.btn-lg{font-size:1.05rem;padding:1em 1.6em}
.btn-sm{font-size:.9rem;padding:.6em 1.1em}
.btn-wa{background:var(--wa);color:#fff;box-shadow:0 6px 18px rgba(37,211,102,.3)}
.btn-wa:hover{background:#1ebe5b}
.btn-primary{background:var(--teal-dark);color:#fff}
.btn-primary:hover{background:var(--teal-mid)}
.btn-ghost{background:transparent;color:var(--teal-dark);border-color:var(--teal-light)}
.btn-ghost:hover{border-color:var(--teal-mid)}
.btn-mint{background:var(--mint);color:var(--teal-dark)}
.btn-mint:hover{background:#6bdab4}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid transparent;transition:border-color .2s,box-shadow .2s}
.site-header.scrolled{border-color:var(--teal-light);box-shadow:0 4px 20px rgba(0,0,0,.05)}
.header-in{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:flex-end;gap:8px;text-decoration:none}
.brand img{width:78px;height:auto}
.brand-sub{font-family:var(--f-head);font-weight:600;font-size:.72rem;letter-spacing:.28em;text-transform:uppercase;color:var(--gray);padding-bottom:6px}
.nav{margin-left:auto}
.nav ul{display:flex;gap:26px;list-style:none;margin:0;padding:0}
.nav a{font-family:var(--f-head);font-weight:600;font-size:.92rem;color:var(--ink);text-decoration:none}
.nav a:hover{color:var(--teal-mid)}
.nav-toggle{display:none}

/* Hero */
.hero{background:radial-gradient(1200px 500px at 85% 0%,var(--teal-row),transparent 70%),linear-gradient(180deg,#fff 0%,#f7fbfb 100%);padding:56px 0 28px;overflow:hidden}
.hero-in{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.lead{font-size:1.15rem;max-width:36em}
.hero-ctas{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 24px}
.hero-points{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:10px 22px;font-size:.95rem;font-weight:600;color:var(--teal-dark)}
.hero-points li{display:flex;align-items:center;gap:8px}
.hero-points .ic{color:var(--teal-mid)}

.hero-visual{position:relative;padding:10px 0 66px}
.monitor{background:var(--teal-dark);border-radius:22px;padding:18px 20px 20px;box-shadow:0 30px 60px rgba(30,110,110,.28);color:#fff}
.monitor-top{display:flex;align-items:center;gap:6px;font-family:var(--f-head);font-size:.8rem;letter-spacing:.06em;margin-bottom:10px;opacity:.9}
.monitor-top b{margin-left:auto;font-weight:600}
.dot{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.25)}
.dot:first-child{background:var(--mint)}
.ecg{width:100%;height:120px;background:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px) 0 0/100% 20px,linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px) 0 0/20px 100%;border-radius:10px}
.ecg path{fill:none;stroke:var(--mint);stroke-width:3;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:900;stroke-dashoffset:900;animation:draw 3.2s ease-out forwards infinite}
@keyframes draw{0%{stroke-dashoffset:900}60%,100%{stroke-dashoffset:0}}
.monitor-rows{margin-top:14px;display:grid;gap:8px}
.monitor-rows div{display:flex;justify-content:space-between;align-items:center;background:rgba(255,255,255,.08);border-radius:10px;padding:10px 14px;font-size:.92rem}
.monitor-rows i{font-style:normal;font-family:var(--f-head);font-weight:700;font-size:.78rem;padding:4px 10px;border-radius:999px;background:rgba(255,255,255,.15)}
.monitor-rows i.ok{background:var(--mint);color:var(--teal-dark)}
.tag-card{position:absolute;left:-28px;bottom:0;display:flex;gap:12px;align-items:center;background:#fff;border-radius:14px;padding:14px 18px;box-shadow:var(--shadow);max-width:290px}
.tag-card .ic{width:40px;height:40px;color:var(--teal-dark);background:var(--teal-row);border-radius:10px;padding:7px}
.tag-card b{display:block;font-family:var(--f-head);color:var(--ink);font-size:.95rem}
.tag-card small{font-size:.8rem;line-height:1.35;display:block}

.trust{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:44px}
.trust-item{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--teal-light);border-radius:14px;padding:14px 16px;font-size:.92rem;line-height:1.35}
.trust-item strong{font-family:var(--f-head);font-size:1.7rem;color:var(--teal-dark);font-weight:800}
.trust-item .ic{width:28px;height:28px;color:var(--teal-mid)}
.trust-item b{color:var(--ink)}

/* Sections */
.section{padding:88px 0}
.section.tinted{background:var(--teal-row)}
.section-head{max-width:720px;margin-bottom:40px}
.section-head p:last-child{font-size:1.08rem}

/* Problem */
.problem{background:#fff}
.compare{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.compare-col{border-radius:var(--radius);padding:28px}
.compare-col h3{font-size:1.2rem}
.compare-col ul{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.compare-col li{display:flex;gap:10px;align-items:flex-start}
.compare-col li .ic{margin-top:2px;border-radius:50%;padding:3px;width:22px;height:22px}
.compare-col.bad{background:#f6f6f6}
.compare-col.bad .ic{background:#e2e2e2;color:#888}
.compare-col.good{background:var(--teal-dark);color:#e6f4f4}
.compare-col.good h3{color:#fff}
.compare-col.good .ic{background:var(--mint);color:var(--teal-dark)}

/* Cards */
.cards{display:grid;gap:20px}
.cards-4{grid-template-columns:repeat(4,1fr)}
.cards-2{grid-template-columns:repeat(2,1fr)}
.cards-3{grid-template-columns:repeat(3,1fr)}
.card{background:#fff;border:1px solid var(--teal-light);border-radius:var(--radius);padding:26px;transition:box-shadow .2s,transform .2s}
.card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.card p{margin:0;font-size:.97rem}
.card-ic{width:52px;height:52px;border-radius:14px;background:var(--teal-row);color:var(--teal-dark);display:grid;place-items:center;margin-bottom:18px}
.card-ic .ic{width:28px;height:28px}
.card-lg{padding:32px}

/* Equipment */
.equip-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.equip{background:#fff;border-radius:var(--radius);padding:24px;display:grid;grid-template-columns:auto 1fr;column-gap:16px;align-items:start}
.equip .ic{grid-row:span 2;width:46px;height:46px;padding:10px;border-radius:12px;background:var(--teal-dark);color:var(--mint)}
.equip h3{margin:2px 0 4px;font-size:1.02rem}
.equip p{margin:0;font-size:.93rem}

/* Steps */
.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(5,1fr);gap:16px;counter-reset:s;position:relative}
.steps:before{content:"";position:absolute;top:26px;left:10%;right:10%;height:2px;background:linear-gradient(90deg,var(--teal-light),var(--mint),var(--teal-light))}
.steps li{position:relative;text-align:center;padding:0 6px}
.step-n{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;margin:0 auto 16px;background:#fff;border:2px solid var(--teal-mid);color:var(--teal-dark);font-family:var(--f-head);font-weight:800;font-size:1.2rem;position:relative}
.steps li:last-child .step-n{background:var(--teal-dark);color:#fff;border-color:var(--teal-dark)}
.steps h3{font-size:1rem}
.steps p{font-size:.92rem;margin:0}

/* Plans */
.plans{background:linear-gradient(135deg,var(--teal-dark),#185a5a);color:#d9efef}
.plans h2{color:#fff}
.plans-in{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.plans-copy p{font-size:1.08rem;margin-bottom:28px}
.plans-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.plans-list li{display:flex;gap:14px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.1);border-radius:14px;padding:16px 18px}
.plans-list .ic{color:var(--teal-dark);background:var(--mint);border-radius:50%;padding:4px;width:26px;height:26px;margin-top:1px}
.plans-list b{display:block;color:#fff;font-family:var(--f-head);font-size:.98rem}
.plans-list span{font-size:.92rem}

/* FAQ */
.faq{display:grid;gap:12px}
.faq details{background:#fff;border-radius:14px;padding:4px 22px;border:1px solid var(--teal-light)}
.faq summary{cursor:pointer;list-style:none;font-family:var(--f-head);font-weight:700;color:var(--ink);padding:16px 30px 16px 0;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";position:absolute;right:0;top:50%;transform:translateY(-50%);font-size:1.5rem;color:var(--teal-mid);font-weight:600}
.faq details[open] summary:after{content:"–"}
.faq details p{margin:0 0 18px}

/* Contact */
.contact-in{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:start}
.contact-line{display:flex;align-items:center;gap:14px;text-decoration:none;color:var(--ink);background:var(--teal-row);border-radius:14px;padding:16px 18px;margin-bottom:12px;transition:background .15s}
.contact-line:hover{background:var(--teal-light)}
.contact-line .ic{width:40px;height:40px;padding:8px;border-radius:10px;background:var(--teal-dark);color:#fff}
.contact-line.wa .ic{background:var(--wa)}
.contact-line small{display:block;font-size:.8rem;color:var(--gray)}
.contact-line b{font-family:var(--f-head);font-size:1.08rem;word-break:break-all}
.contact-note{display:flex;gap:8px;align-items:center;font-size:.92rem;margin-top:18px}
.contact-note .ic{color:var(--teal-mid)}
.form{background:#fff;border:1px solid var(--teal-light);border-radius:20px;padding:30px;box-shadow:var(--shadow);display:grid;gap:14px}
.form h3{font-size:1.2rem;margin:0 0 4px}
.form label{display:grid;gap:6px;font-size:.88rem;font-weight:600;color:var(--ink)}
.form input,.form textarea{font:inherit;font-weight:400;font-size:1rem;color:var(--ink);border:1.5px solid #d6e3e3;border-radius:10px;padding:12px 14px;background:#fbfdfd;width:100%}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--teal-mid);box-shadow:0 0 0 3px var(--teal-light);background:#fff}
.form textarea{resize:vertical;min-height:110px}
.form .btn{justify-self:start}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.hp{position:absolute!important;left:-9999px}
.form-msg{margin:0;font-weight:600;font-size:.95rem}
.form-msg.ok{color:var(--teal-dark)}
.form-msg.err{color:#b23b3b}

/* Footer */
.site-footer{background:#123f3f;color:#b9d6d6;padding:56px 0 24px;font-size:.93rem}
.footer-in{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}
.site-footer img{width:110px;margin-bottom:14px}
.site-footer h4{color:#fff;font-size:.9rem;letter-spacing:.08em;text-transform:uppercase}
.site-footer a{color:#e3f3f3;text-decoration:none}
.site-footer a:hover{color:var(--mint)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:36px;padding-top:20px;font-size:.84rem;color:#86afaf}

/* WhatsApp floating */
.wa-float{position:fixed;right:18px;bottom:18px;z-index:60;width:60px;height:60px;border-radius:50%;background:var(--wa);color:#fff;display:grid;place-items:center;box-shadow:0 10px 26px rgba(0,0,0,.22);transition:transform .15s}
.wa-float .ic{width:32px;height:32px}
.wa-float:hover{transform:scale(1.07)}

/* Reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* Responsive */
@media (max-width:1000px){
  .cards-4{grid-template-columns:repeat(2,1fr)}
  .equip-grid{grid-template-columns:repeat(2,1fr)}
  .trust{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr;gap:0}
  .steps:before{top:26px;bottom:26px;left:26px;right:auto;width:2px;height:auto;background:linear-gradient(180deg,var(--teal-light),var(--mint))}
  .steps li{display:grid;grid-template-columns:54px 1fr;column-gap:18px;text-align:left;padding:0 0 22px}
  .steps .step-n{grid-row:span 2;margin:0}
  .steps h3{margin:12px 0 4px}
}
@media (max-width:860px){
  body{font-size:16px}
  .header-cta span{display:none}
  .header-cta{padding:.6em}
  .header-cta .ic{width:22px;height:22px}
  .nav{order:3;margin-left:0}
  .header-in{gap:12px}
  .header-cta{margin-left:auto}
  .nav-toggle{display:flex;flex-direction:column;gap:5px;background:none;border:0;padding:10px;cursor:pointer}
  .nav-toggle span:not(.sr){width:24px;height:2.5px;background:var(--ink);border-radius:2px;transition:.2s}
  .nav ul{position:fixed;top:72px;left:0;right:0;flex-direction:column;gap:0;background:#fff;border-bottom:1px solid var(--teal-light);box-shadow:0 12px 24px rgba(0,0,0,.06);padding:8px 20px 16px;display:none}
  .nav ul.open{display:flex}
  .nav ul a{display:block;padding:14px 0;border-bottom:1px solid var(--teal-row);font-size:1rem}
  .hero{padding:32px 0 20px}
  .hero-in,.plans-in,.contact-in,.compare,.cards-3{grid-template-columns:1fr}
  .hero-in{gap:28px}
  .hero-visual{max-width:460px;width:100%;margin:0 auto;padding-bottom:56px}
  .tag-card{left:12px;right:12px;max-width:none}
  .section{padding:64px 0}
  .plans-in{gap:32px}
  .footer-in{grid-template-columns:1fr;gap:24px}
}
@media (max-width:560px){
  .wrap{padding:0 16px}
  .cards-4,.cards-2,.equip-grid,.row2{grid-template-columns:1fr}
  .trust{grid-template-columns:1fr 1fr;gap:10px}
  .trust-item{flex-direction:column;align-items:flex-start;gap:6px;padding:12px}
  .hero-ctas .btn{width:100%}
  .form{padding:22px}
  .form .btn{width:100%}
  .brand img{width:66px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .ecg path{stroke-dashoffset:0}
  .reveal{opacity:1;transform:none}
}