/* Layout: web comercial clara — cabecera azul marino, hero con foto de cámara, bandas alternas por sección. Tema único claro a propósito (web pública de marca). */
:root{
  --navy:#0B1B3A; --blue:#1570EF; --blue-dk:#0E56C2; --blue-soft:#E8F1FE; --band:#F2F7FD;
  --ink:#0B1B3A; --text:#3B4A63; --muted:#6A7890; --line:#DCE5F0; --white:#FFFFFF;
  --red:#D92D20; --red-soft:#FDECEA; --green:#12A150; --amb:#D92D20; --imp:#1570EF;
  --f-head:"Outfit","Trebuchet MS",Arial,sans-serif;
  --f-body:"Figtree",system-ui,-apple-system,"Segoe UI",sans-serif;
  color-scheme:light;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--white);color:var(--text);font-family:var(--f-body);font-size:16px;line-height:1.55}
.wrap{max-width:1180px;margin-inline:auto;padding-inline:24px}
h1,h2,h3{font-family:var(--f-head);color:var(--ink);margin:0;line-height:1.08;text-wrap:balance}
h1{font-size:clamp(2.2rem,4.6vw,3.5rem);font-weight:800;letter-spacing:-.01em}
h2{font-size:clamp(1.8rem,3.4vw,2.5rem);font-weight:800;letter-spacing:-.01em}
h3{font-size:1.1rem;font-weight:700}
p{margin:0}
.eyebrow{font-size:.82rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--blue)}
.eyebrow.red{color:var(--red)}
.lead{font-size:1.15rem;color:var(--text);max-width:52ch}
.btn{display:inline-flex;align-items:center;gap:.6em;font:600 1rem var(--f-body);padding:.85em 1.5em;border-radius:8px;border:1.5px solid var(--blue);background:var(--blue);color:#fff;text-decoration:none;cursor:pointer;transition:background .15s}
.btn:hover{background:var(--blue-dk);border-color:var(--blue-dk)}
.btn.ghost{background:#fff;color:var(--blue)}
.btn.ghost:hover{background:var(--blue-soft)}
.btn.red{background:var(--red);border-color:var(--red)}
.btn svg{width:18px;height:18px}
a:focus-visible,.btn:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,button:focus-visible{outline:3px solid #7CB4FF;outline-offset:2px}

/* cabecera */
header.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:10;background:var(--navy)}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:70px;flex-wrap:nowrap;padding-block:10px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:#fff}
.logo svg{width:34px;height:34px;color:#3B8BFF}
.logo b{display:block;font-family:var(--f-head);font-size:1.75rem;font-weight:700;line-height:1;letter-spacing:-.01em}
.logo b span{color:#3B8BFF}
.logo small{display:block;font-size:.58rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:#C8D6EE;margin-top:3px}
nav.menu{display:flex;gap:20px;align-items:center;white-space:nowrap}
nav.menu a{color:#E6EEFB;text-decoration:none;font-size:.95rem;padding-block:6px;border-bottom:2px solid transparent}
nav.menu a:hover,nav.menu a.on{color:#5EA2FF;border-bottom-color:#5EA2FF}
header .btn{white-space:nowrap;border-radius:999px;padding:.6em 1.3em;font-size:.95rem;background:#1E7BFF;border-color:#1E7BFF}

/* hero */
.hero{position:relative;overflow:hidden;background:var(--white)}
.hero-photo{position:absolute;inset:0 0 0 auto;width:56%;background:url(img/hero-frio.jpg) center/cover no-repeat}
.hero-photo::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#fff 0%,rgba(255,255,255,.85) 18%,rgba(255,255,255,0) 48%)}
.hero .wrap{position:relative;padding-block:56px 64px;min-height:440px;display:flex;align-items:center}
.hero-copy{max-width:600px;display:flex;flex-direction:column;gap:20px}
.hero-icons{display:grid;grid-template-columns:repeat(4,auto);gap:28px;justify-content:start;margin-top:4px}
.hi{display:flex;flex-direction:column;align-items:center;text-align:center;gap:8px;font-size:.9rem;font-weight:600;color:var(--ink);line-height:1.25;max-width:100px}
.circle{width:56px;height:56px;border-radius:50%;background:var(--blue-soft);display:grid;place-items:center;color:var(--blue)}
.circle svg{width:28px;height:28px}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap;margin-top:6px}
.badge-247{position:absolute;right:24px;bottom:28px;background:#fff;border-radius:10px;box-shadow:0 10px 30px -10px rgba(11,27,58,.35);padding:14px 18px;display:flex;align-items:center;gap:12px;font-weight:600;color:var(--ink);font-size:.95rem;line-height:1.3}
.badge-247 .circle{width:44px;height:44px}

section.band{padding-block:64px}
.bg-soft{background:var(--band)}
.bg-red{background:linear-gradient(180deg,#FFF5F4,#FDECEA)}
.head{display:flex;flex-direction:column;gap:10px;margin-bottom:32px}

/* cómo funciona */
.how{display:grid;grid-template-columns:1fr 280px;gap:32px;align-items:start}
.how > *{min-width:0}
.flow{display:grid;grid-template-columns:1fr auto 1fr auto 1fr auto 1fr;gap:10px;align-items:start}
.flow .arrow{color:var(--blue);margin-top:46px}
.flow .arrow svg{width:26px;height:26px}
.step{display:flex;flex-direction:column;gap:8px;min-width:0}
.step .pic{height:116px;display:grid;place-items:center}
.step .pic img{max-height:116px;width:auto;mix-blend-mode:multiply}
.step p{font-size:.92rem;color:var(--text)}
.cloud{width:120px;height:84px;position:relative;display:grid;place-items:center}
.cloud svg{position:absolute;inset:0;width:100%;height:100%;color:var(--blue)}
.cloud span{position:relative;color:#fff;font-family:var(--f-head);font-weight:700;font-size:.95rem;margin-top:12px}
.inst{background:#E9F0F9;border-radius:12px;padding:18px;display:flex;flex-direction:column;gap:10px}
.inst h3{font-size:1rem}
.inst-pic{position:relative;height:220px}
.inst-pic img{height:100%;width:auto;mix-blend-mode:multiply}
.tag{position:absolute;right:0;background:var(--blue);color:#fff;font-size:.8rem;font-weight:600;padding:6px 10px;border-radius:6px;line-height:1.25}
.tag::before{content:"";position:absolute;right:100%;top:50%;width:52px;border-top:1.5px solid var(--blue)}

/* pantallas */
.screens{display:grid;grid-template-columns:.8fr 1.2fr;gap:40px;align-items:center}
.screens > *{min-width:0}
.dash{background:#fff;border-radius:12px;box-shadow:0 20px 50px -24px rgba(11,27,58,.45);display:grid;grid-template-columns:150px 1fr;overflow:hidden;border:1px solid var(--line)}
.side{background:var(--navy);color:#C9D6EC;padding:16px 0;display:flex;flex-direction:column;gap:2px;font-size:.82rem}
.side .lg{color:#fff;font-family:var(--f-head);font-weight:700;font-size:1.05rem;padding:0 14px 14px;display:flex;align-items:center;gap:6px}
.side .lg svg{width:18px;height:18px;color:#3B8BFF}
.side a{color:inherit;text-decoration:none;padding:8px 14px;display:flex;gap:8px;align-items:center}
.side a.on{background:#1E5BB8;color:#fff}
.side svg{width:15px;height:15px;flex:none}
.main{padding:16px;display:flex;flex-direction:column;gap:12px;min-width:0}
.main-top{display:flex;justify-content:space-between;align-items:start;gap:10px;flex-wrap:wrap}
.main-top b{font-family:var(--f-head);font-size:1.15rem;color:var(--ink)}
.main-top small{display:block;color:var(--muted);font-size:.72rem}
.okpill{font-size:.72rem;font-weight:600;color:var(--green);background:#E7F7EE;padding:4px 10px;border-radius:999px;white-space:nowrap}
.cams{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.cam{border:1px solid var(--line);border-radius:8px;padding:10px;min-width:0}
.cam-h{display:flex;justify-content:space-between;align-items:center;font-weight:700;color:var(--ink);font-size:.86rem}
.cam-h i{width:9px;height:9px;border-radius:50%;background:var(--green)}
.cam small{color:var(--muted);font-size:.7rem}
.vals{display:flex;flex-wrap:wrap;justify-content:space-between;gap:4px 8px;margin-top:6px}
.vals div{display:flex;flex-direction:column;font-size:.66rem;color:var(--muted)}
.vals b{font-size:.86rem;color:var(--blue);font-variant-numeric:tabular-nums;white-space:nowrap}
.chartcard{border:1px solid var(--line);border-radius:8px;padding:10px 12px}
.chartcard-top{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;align-items:center}
.chartcard-top b{color:var(--ink);font-size:.9rem}
.leg{display:flex;gap:14px;font-size:.74rem;color:var(--text)}
.leg i{display:inline-block;width:16px;height:2px;vertical-align:middle;margin-right:5px}
.tabs{display:flex;gap:4px;margin:8px 0 4px}
.tabs button{font:600 .74rem var(--f-body);border:1px solid var(--line);background:#fff;color:var(--muted);padding:4px 10px;border-radius:5px;cursor:pointer}
.tabs button[aria-selected="true"]{background:var(--blue);border-color:var(--blue);color:#fff}
svg.ch{width:100%;height:auto;display:block}
.example{font-size:.75rem;color:var(--muted);margin-top:8px}

/* aviso preventivo */
.alert-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:40px;align-items:center}
.alert-grid > *{min-width:0}
.alert-card{background:#fff;border:1px solid #F5C2BD;border-radius:12px;display:grid;grid-template-columns:1fr 1fr;overflow:hidden}
.alert-card > *{min-width:0}
.al{padding:18px;border-right:1px solid #F5C2BD;display:flex;flex-direction:column;gap:10px;font-size:.9rem}
.al-h{display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap;align-items:center}
.al-h b{color:var(--red);display:flex;align-items:center;gap:8px;font-size:.92rem;letter-spacing:.02em}
.al-h b svg{width:22px;height:22px}
.al-h small{color:var(--muted);font-size:.75rem}
.al dl{display:grid;grid-template-columns:auto 1fr;gap:4px 14px;margin:0}
.al dt{color:var(--text)}
.al dd{margin:0;font-weight:600;color:var(--ink);font-variant-numeric:tabular-nums}
.al .rec{background:var(--red-soft);color:var(--red);border-radius:6px;padding:8px 10px;font-weight:600}
.rc{padding:14px}
.rc b{color:var(--ink);font-size:.92rem}

/* ventajas */
.adv{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.adv div{display:flex;align-items:center;gap:12px;font-weight:600;color:var(--ink);font-size:.95rem;line-height:1.3;min-width:0}
.adv .circle{flex:none}

/* sectores */
.sectors{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.sector{background:#fff;border:1px solid var(--line);border-radius:10px;padding:16px;display:flex;gap:12px;align-items:center;font-weight:600;color:var(--ink)}
.sector .circle{width:42px;height:42px;flex:none}
.sector .circle svg{width:22px;height:22px}

/* contacto */
.contact{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start}
.contact > *{min-width:0}
form{background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px;display:grid;grid-template-columns:1fr 1fr;gap:16px;box-shadow:0 14px 40px -28px rgba(11,27,58,.4)}
.field{display:flex;flex-direction:column;gap:6px;min-width:0}
.field.full{grid-column:1/-1}
label{font-size:.88rem;font-weight:600;color:var(--ink)}
input,select,textarea{font:inherit;color:var(--ink);background:#F8FAFD;border:1px solid var(--line);border-radius:8px;padding:.7em .8em;width:100%}
textarea{min-height:110px;resize:vertical}
.err{color:var(--red);font-size:.82rem;min-height:1em}
.consent{display:flex;gap:10px;align-items:flex-start;font-weight:400;color:var(--text)}
.consent input{width:auto;margin-top:.3em}
.note{grid-column:1/-1;background:var(--blue-soft);color:var(--ink);border-radius:8px;padding:12px 14px;font-size:.92rem}
.checks{list-style:none;padding:0;margin:8px 0 0;display:grid;gap:10px}
.checks li{display:flex;gap:10px;align-items:center;font-weight:500;color:var(--ink)}
.checks svg{width:20px;height:20px;color:var(--blue);flex:none}
footer{background:var(--navy);color:#C9D6EC;padding-block:28px;font-size:.88rem}
footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

@media (max-width:1180px){nav.menu{gap:14px;font-size:.9rem}}
@media (max-width:1020px){
  nav.menu{display:none}
  .how,.screens,.alert-grid,.contact{grid-template-columns:1fr}
  .inst{max-width:420px}
  .adv{grid-template-columns:repeat(3,1fr)}
  .sectors{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:760px){
  .hero-photo{position:relative;width:auto;height:240px;inset:auto}
  .hero-photo::before{background:linear-gradient(0deg,#fff 0%,rgba(255,255,255,0) 40%)}
  .hero{display:flex;flex-direction:column-reverse}
  .hero .wrap{min-height:0;padding-block:8px 48px}
  .badge-247{display:none}
  .hero-icons{grid-template-columns:repeat(2,auto);gap:18px 34px}
  .flow{grid-template-columns:1fr 1fr;gap:24px 16px}
  .flow .arrow{display:none}
  .dash{grid-template-columns:1fr}
  .side{display:none}
  .cams{grid-template-columns:1fr}
  .alert-card{grid-template-columns:1fr}
  .al{border-right:0;border-bottom:1px solid #F5C2BD}
  .adv,.sectors{grid-template-columns:1fr}
  form{grid-template-columns:1fr}
  section.band{padding-block:48px}
  header .btn{display:none}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* ===== Añadidos web pública ===== */
header .acts{display:flex;gap:10px;align-items:center}
header .btn.out{background:transparent;border-color:#3E5A8C;color:#E6EEFB}
header .btn.out:hover{background:#13285A}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.note.ok{background:#E7F7EE;color:#0B5A31}
.note.bad{background:var(--red-soft);color:var(--red)}
button[disabled]{opacity:.6;cursor:wait}

nav.menu .mob{display:none}
/* portada */
.home-hero{background:linear-gradient(180deg,var(--navy) 0%,#13306A 100%);color:#DCE6F7;padding-block:72px 120px}
.home-hero h1{color:#fff;max-width:18ch}
.home-hero .lead{color:#C8D6EE}
.home-hero .wrap{display:flex;flex-direction:column;gap:20px}
.home-hero .eyebrow{color:#7DB2FF}
.lines{margin-top:-80px;padding-bottom:64px}
.lines .wrap{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.line{background:#fff;border-radius:16px;overflow:hidden;box-shadow:0 24px 60px -30px rgba(11,27,58,.5);display:flex;flex-direction:column;min-width:0;border:1px solid var(--line)}
.line-vis{height:250px;position:relative;overflow:hidden}
.line-vis.photo{background:url(img/hero-frio.jpg) center 40%/cover no-repeat}
.line-vis.vent{background:radial-gradient(circle at 70% 40%,#1B3F7E 0%,var(--navy) 70%);display:flex;align-items:center;justify-content:space-around;gap:16px;padding:20px}
.line-body{padding:26px;display:flex;flex-direction:column;gap:14px;flex:1}
.line-body h2{font-size:1.9rem}
.line-body .checks{margin:0}
.line-body .btn{align-self:flex-start;margin-top:auto}
.pill-cat{position:absolute;left:18px;top:18px;background:#fff;color:var(--ink);font-weight:700;font-size:.82rem;padding:6px 12px;border-radius:999px;display:flex;gap:6px;align-items:center;box-shadow:0 6px 18px -8px rgba(0,0,0,.4)}
.pill-cat svg{width:16px;height:16px;color:var(--blue)}
.platform{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.platform div{display:flex;flex-direction:column;gap:10px;min-width:0}
.platform p{font-size:.95rem}

/* ventilador animado */
.fan{width:150px;height:150px;flex:none;color:#5EA2FF}
.fan .rot{transform-origin:50px 50px;animation:spin 1.6s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.vreads{display:grid;gap:10px;min-width:0}
.vread{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);border-radius:8px;padding:8px 12px;color:#E6EEFB;font-size:.78rem;min-width:0}
.vread b{display:block;font-family:var(--f-head);font-size:1.35rem;color:#fff;font-variant-numeric:tabular-nums;white-space:nowrap}

/* página ventilación */
.v-hero{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;padding-block:60px 64px}
.v-hero > *{min-width:0}
.v-panel{background:var(--navy);border-radius:14px;padding:22px;display:flex;flex-direction:column;gap:16px;box-shadow:0 24px 60px -30px rgba(11,27,58,.6)}
.v-panel-top{display:flex;justify-content:space-between;align-items:center;gap:10px;color:#C8D6EE;font-size:.82rem;flex-wrap:wrap}
.v-panel-top b{color:#fff;font-family:var(--f-head);font-size:1.05rem}
.v-grid{display:grid;grid-template-columns:auto 1fr;gap:20px;align-items:center}
.v-reads{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.bar{height:8px;border-radius:99px;background:rgba(255,255,255,.12);overflow:hidden;margin-top:6px}
.bar i{display:block;height:100%;width:65%;background:#3B8BFF;border-radius:99px}
.steps4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;list-style:none;padding:0;margin:0;counter-reset:s}
.steps4 li{counter-increment:s;background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px;display:flex;flex-direction:column;gap:10px;min-width:0}
.steps4 li::before{content:counter(s);width:34px;height:34px;border-radius:50%;background:var(--blue);color:#fff;display:grid;place-items:center;font-family:var(--f-head);font-weight:700}
.steps4 p{font-size:.95rem}
.feat3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feat3 div{display:flex;gap:14px;align-items:flex-start;min-width:0}
.feat3 h3{margin-bottom:4px}
.feat3 p{font-size:.95rem}
.callout{margin-top:28px;background:var(--blue-soft);border-radius:12px;padding:18px 22px;display:flex;gap:14px;align-items:center;color:var(--ink);font-weight:500}
.callout svg{width:26px;height:26px;color:var(--blue);flex:none}

@media (max-width:1020px){
  header .btn.out{display:none}
  .lines .wrap,.v-hero{grid-template-columns:1fr}
  .platform{grid-template-columns:1fr 1fr}
  .steps4{grid-template-columns:1fr 1fr}
  .feat3{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  .platform,.steps4,.feat3{grid-template-columns:1fr}
  .v-grid{grid-template-columns:1fr;justify-items:center}
  .line-vis.vent .fan{width:110px;height:110px}
  .home-hero{padding-block:48px 110px}
}
@media (prefers-reduced-motion:reduce){.fan .rot{animation:none}}
@media (max-width:1020px){
  header.top .wrap{flex-wrap:wrap;row-gap:4px}
  nav.menu{display:flex;order:3;width:100%;overflow-x:auto;gap:18px;font-size:.92rem}
  nav.menu .mob{display:inline}
}

/* Cabecera blanca con el logotipo ControlFan */
header.top{background:#fff;border-bottom:1px solid var(--line);box-shadow:0 4px 18px -14px rgba(11,27,58,.5)}
.logo img{height:52px;width:auto;display:block}
nav.menu a{color:var(--ink)}
nav.menu a:hover,nav.menu a.on{color:var(--blue);border-bottom-color:var(--blue)}
header .btn{background:var(--blue);border-color:var(--blue)}
header .btn.out{background:#fff;border-color:var(--line);color:var(--ink)}
header .btn.out:hover{background:var(--blue-soft)}

/* ===== Registrador y tres líneas (oct. 2026) ===== */
.lines .wrap{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.line-vis{height:220px}
.line-body{padding:22px}
.line-body h2{font-size:1.6rem}
.line-vis.vent .fan{width:120px;height:120px}
.line-vis.reg{background:radial-gradient(circle at 30% 30%,#1B3F7E 0%,var(--navy) 70%);display:flex;align-items:flex-end;padding:56px 20px 20px}
.r-mini{display:grid;grid-template-columns:1fr 1fr;gap:10px;width:100%}
.r-mini .r-bars{grid-column:1/-1;height:56px}
.r-bars{display:flex;align-items:flex-end;gap:5px;height:90px}
.r-bars i{flex:1;background:#3B8BFF;border-radius:3px 3px 0 0;opacity:.85}
.r-bars i.hoy{background:#7DB2FF;opacity:1}
.r-bars-leg{color:#C8D6EE;font-size:.75rem}
.r-reads{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.vread.ida b{color:#FF8A80} .vread.ret b{color:#7DB2FF}
.acc3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.acc{background:#fff;border:1px solid var(--line);border-radius:16px;padding:28px;display:flex;flex-direction:column;gap:10px;align-items:flex-start;text-decoration:none;color:var(--text);box-shadow:0 20px 50px -30px rgba(11,27,58,.45);transition:transform .15s}
.acc:hover{transform:translateY(-3px)}
.acc h3{font-size:1.35rem}
.acc .btn{margin-top:10px}
.acceso{min-height:60vh}
@media (max-width:1020px){.lines .wrap,.acc3{grid-template-columns:1fr}.line-vis{height:200px}}
@media (min-width:1021px) and (max-width:1180px){.line-body .btn{font-size:.9rem;padding:.75em 1.1em}}