/* IZALA · landings de campaña (fase 1)
   Sistema: acero + niebla + amarillo de seguridad (NOM-026) como único acento.
   El elemento memorable es la placa de datos del hero; todo lo demás es sobrio. */

@font-face {
  font-family: "Archivo";
  src: url("../fonts/archivo-latin-wdth-normal.woff2") format("woff2-variations"),
       url("../fonts/archivo-latin-wdth-normal.woff2") format("woff2");
  font-weight: 100 900;
  font-stretch: 62% 125%;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --acero: #1E2B35;      /* texto y bandas oscuras */
  --acero-2: #3D4C58;    /* texto secundario */
  --niebla: #E9EDF0;     /* fondo de página */
  --blanco: #FFFFFF;
  --seguridad: #F2B705;  /* amarillo de seguridad, solo acento */
  --wa: #25D366;         /* verde WhatsApp */
  --wa-tinta: #062B16;   /* texto sobre verde WhatsApp */
  --wa-osc: #0B6B3A;     /* verde oscuro para botones de contorno */
  --plano: #1D4F7A;      /* enlaces */
  --placa-1: #D9DFE4;
  --placa-2: #BCC6CE;

  --f: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --s-1: .875rem;
  --s0: 1.0625rem;
  --s1: 1.25rem;
  --s2: clamp(1.5rem, 1.1rem + 1.6vw, 2.1rem);
  --s3: clamp(2rem, 1.2rem + 3.6vw, 3.3rem);
  --wrap: 72rem;
  --gap: clamp(1.25rem, .8rem + 2vw, 2.5rem);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  font-family: var(--f);
  font-size: var(--s0);
  line-height: 1.55;
  color: var(--acero);
  background: var(--niebla);
  font-stretch: 100%;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--plano); text-underline-offset: .18em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--acero); outline-offset: 3px; box-shadow: 0 0 0 6px var(--seguridad); }
h1, h2, h3 { line-height: 1.15; margin: 0 0 .5em; font-stretch: 118%; letter-spacing: -.01em; }
h1 { font-size: var(--s3); font-weight: 780; max-width: 18ch; }
h2 { font-size: var(--s2); font-weight: 720; max-width: 26ch; }
h3 { font-size: var(--s1); font-weight: 680; font-stretch: 108%; }
p { margin: 0 0 1em; max-width: 64ch; }

.wrap { width: min(100% - 2 * var(--gap), var(--wrap)); margin-inline: auto; }
.narrow > * { max-width: 46rem; }
.skip { position: absolute; left: -999px; top: .5rem; background: var(--blanco); padding: .5rem 1rem; z-index: 50; }
.skip:focus { left: .5rem; }

mark.confirmar { background: #FFF0B3; color: #5A4300; padding: 0 .25em; border-radius: 2px; font-size: .9em; }

/* ---------- botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .6rem;
  min-height: 48px; padding: .75rem 1.25rem;
  font: inherit; font-weight: 680; font-stretch: 105%; text-decoration: none;
  border-radius: 6px; cursor: pointer;
}
.btn .wa-ico { width: 1.35em; height: 1.35em; flex: none; }
.btn-wa { background: var(--wa); color: var(--wa-tinta); border: 2px solid var(--wa); }
.btn-wa:hover { background: #1FBE5B; border-color: #1FBE5B; }
.btn-lg { min-height: 56px; font-size: var(--s1); padding: .9rem 1.6rem; width: 100%; }
.btn-sm { min-height: 44px; padding: .5rem 1rem; font-size: var(--s-1); }
.btn-wa-line { background: var(--blanco); color: var(--wa-osc); border: 2px solid var(--wa-osc); }
.btn-wa-line:hover { background: #E8F6EE; }
@media (min-width: 40em) { .btn-lg { width: auto; } }

/* ---------- barra superior ---------- */
.topbar { background: var(--blanco); color: var(--acero); position: sticky; top: 0; z-index: 20; border-bottom: 1px solid #CDD5DB; box-shadow: 0 1px 0 rgba(30,43,53,.04); }
.topbar-in { display: flex; align-items: center; justify-content: space-between; min-height: 60px; gap: 1rem; padding: 6px 0; }
.brand { display: block; line-height: 0; }
.brand img { height: 48px; width: auto; }
.brand-mark { font-weight: 820; font-stretch: 125%; font-size: 1.25rem; letter-spacing: .02em; border-bottom: 3px solid var(--seguridad); line-height: 1.1; }
.brand-sub { font-size: var(--s-1); opacity: .85; display: none; }
.topbar-actions { display: flex; align-items: center; gap: 1rem; }
.topbar-tel { color: var(--acero); display: inline-flex; align-items: center; gap: .4rem; min-height: 44px; min-width: 44px; justify-content: center; text-decoration: none; }
.topbar-tel svg { width: 1.25rem; height: 1.25rem; }
.topbar-tel span { display: none; }
.topbar-wa { display: none; }
@media (min-width: 52em) {
  .topbar-tel span { display: inline; }
  .topbar-wa { display: inline-flex; }
}

/* ---------- hero ---------- */
.hero { border-top: 4px solid var(--seguridad); padding: clamp(2rem, 1rem + 4vw, 4.5rem) 0 clamp(2.5rem, 1rem + 4vw, 4.5rem); background: var(--blanco); border-bottom: 1px solid #CDD5DB; }
.hero-grid { display: grid; gap: 2.25rem; align-items: start; }
@media (min-width: 60em) { .hero-grid { grid-template-columns: 1.25fr .9fr; gap: 4rem; } }
.lead { font-size: var(--s1); color: var(--acero-2); max-width: 46ch; }
.hero-cta { margin-top: 1.75rem; }
.response { margin: .9rem 0 .3rem; font-size: var(--s-1); color: var(--acero-2); }
.alt { margin: 0 0 .3rem; font-size: var(--s-1); }
.privacy { font-size: .8125rem; color: var(--acero-2); margin: 0; }

/* placa de datos: guiño a la placa de identificación de un recipiente sujeto a presión */
.plate {
  position: relative;
  background: linear-gradient(160deg, var(--placa-1), var(--placa-2));
  border-radius: 10px;
  padding: 1.6rem 1.6rem 1.4rem;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.7), inset 0 -2px 0 rgba(30,43,53,.18);
  border-left: 8px solid var(--seguridad);
}
.rivet { position: absolute; width: 10px; height: 10px; border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #F4F6F8, #7F8C96 70%); box-shadow: 0 1px 1px rgba(30,43,53,.4); }
.r1 { top: 10px; left: 10px; } .r2 { top: 10px; right: 10px; } .r3 { bottom: 10px; left: 10px; } .r4 { bottom: 10px; right: 10px; }
.plate-head { font-weight: 760; font-stretch: 125%; font-size: var(--s-1); margin: 0 0 .9rem; padding-left: .6rem; }
.plate dl { margin: 0; border-top: 2px solid rgba(30,43,53,.55); }
.plate-row { display: grid; grid-template-columns: 6.25rem 1fr; gap: .75rem; padding: .6rem 0; border-bottom: 1px solid rgba(30,43,53,.3); }
.nw { white-space: nowrap; }
.plate dt { overflow-wrap: anywhere; font-size: var(--s-1); color: var(--acero-2); font-stretch: 112%; }
.plate dd { margin: 0; font-weight: 640; font-stretch: 96%; }
.plate-qr { display: none; margin-top: 1.1rem; gap: 1rem; align-items: center; }
.plate-qr img { background: var(--blanco); padding: 6px; border-radius: 4px; }
.plate-qr p { font-size: var(--s-1); margin: 0; }
@media (min-width: 60em) and (pointer: fine) { .plate-qr { display: flex; } }

/* ---------- secciones ---------- */
main > section { padding: clamp(2.5rem, 1.5rem + 4vw, 5rem) 0; }
.steps { background: var(--niebla); }
.steps-list { list-style: none; counter-reset: paso; padding: 0; margin: 1.5rem 0 0; display: grid; gap: 1.5rem; }
@media (min-width: 48em) { .steps-list { grid-template-columns: repeat(3, 1fr); gap: 2rem; } }
.steps-list li { counter-increment: paso; padding-top: 1rem; border-top: 3px solid var(--acero); }
.steps-list li::before { content: counter(paso); display: block; font-weight: 800; font-stretch: 125%; font-size: 2rem; line-height: 1; margin-bottom: .6rem; }
.steps-list p { color: var(--acero-2); margin: 0; }

.applies { background: var(--blanco); }
.applies p { font-size: var(--s1); }

.risk { background: var(--acero); color: var(--blanco); }
.risk h2 { color: var(--blanco); }
.risk-list { list-style: none; padding: 0; margin: 1.5rem 0; display: grid; gap: 1.25rem; }
@media (min-width: 48em) { .risk-list { grid-template-columns: repeat(3, 1fr); gap: 2rem; } }
.risk-list li { padding-left: 1rem; border-left: 4px solid var(--seguridad); color: #D4DCE2; }
.risk-list strong { display: block; color: var(--blanco); font-size: var(--s1); font-stretch: 112%; margin-bottom: .25rem; }
.risk-note { color: #D4DCE2; font-size: var(--s-1); }
.risk .btn-wa-line { margin-top: .5rem; }

.services { background: var(--blanco); }
.svc-list { list-style: none; padding: 0; margin: 1.5rem 0 0; border-top: 2px solid var(--acero); }
.svc { display: grid; gap: 1rem; padding: 1.5rem 0; border-bottom: 1px solid #CDD5DB; }
@media (min-width: 48em) { .svc { grid-template-columns: 1fr auto; align-items: center; gap: 2.5rem; } }
.svc p { color: var(--acero-2); margin: 0; }
.svc h3 { margin-bottom: .35rem; }
.also { margin-top: 1.5rem; color: var(--acero-2); }

.why { background: var(--niebla); }
.why-list { list-style: none; padding: 0; margin: 1.5rem 0 0; display: grid; gap: 1.75rem; }
@media (min-width: 48em) { .why-list { grid-template-columns: repeat(2, 1fr); gap: 2rem 3rem; } }
.why-list h3 { font-size: var(--s0); font-stretch: 112%; margin-bottom: .25rem; }
.why-list p { color: var(--acero-2); margin: 0; }

.faq { background: var(--blanco); }
.faq details { border-bottom: 1px solid #CDD5DB; }
.faq details:first-of-type { border-top: 2px solid var(--acero); margin-top: 1.5rem; }
.faq summary { cursor: pointer; padding: 1.1rem 2rem 1.1rem 0; font-weight: 640; position: relative; list-style: none; min-height: 44px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: .25rem; top: .9rem; font-size: 1.4rem; font-weight: 500; }
.faq details[open] summary::after { content: "−"; }
.faq details p { color: var(--acero-2); padding-bottom: .5rem; }
.faq-more { margin-top: 2rem; display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; }
.faq-more p { margin: 0; font-weight: 640; }

.close { background: var(--niebla); border-top: 8px solid var(--seguridad); }
.close-alt { margin-top: 1.25rem; font-size: var(--s-1); }

.footer { background: var(--acero); color: #D4DCE2; padding: 2.5rem 0 6rem; font-size: var(--s-1); }
.footer a { color: var(--blanco); }
.footer p { margin: 0 0 .5rem; }
.footer strong { color: var(--blanco); font-weight: 640; margin-right: .35rem; }
.footer-name { color: var(--blanco); font-weight: 700; font-stretch: 112%; }
.footer-grid { display: grid; gap: 1.5rem; }
@media (min-width: 48em) { .footer-grid { grid-template-columns: 1fr 1.6fr 1fr; } }

/* ---------- botón flotante (solo móvil) ---------- */
.wa-float {
  position: fixed; right: 1rem; bottom: 1rem; z-index: 30;
  display: inline-flex; align-items: center; gap: .5rem;
  min-height: 56px; padding: 0 1.1rem 0 .95rem; border-radius: 28px;
  background: var(--wa); color: var(--wa-tinta); font-weight: 700; text-decoration: none;
  box-shadow: 0 6px 18px rgba(30,43,53,.28);
}
.wa-float .wa-ico { width: 1.6rem; height: 1.6rem; }
.js .wa-float { opacity: 0; transform: translateY(12px); pointer-events: none; transition: opacity .2s, transform .2s; }
.js .wa-float.is-visible { opacity: 1; transform: none; pointer-events: auto; }
@media (prefers-reduced-motion: reduce) { .js .wa-float { transition: none; } }
@media (min-width: 52em) { .wa-float { display: none; } }

/* ---------- páginas internas ---------- */
.legal li { margin-bottom: .5rem; }

/* ---------- notas al pie ---------- */
sup.ast, .ast { font-size: .7em; vertical-align: super; line-height: 0; margin-left: .1em; }
.footnote, .aviso-simple { font-size: .8125rem; color: #C3CDD5; max-width: 80ch; }
.aviso-simple { padding-bottom: 1.5rem; margin-bottom: 1.5rem; border-bottom: 1px solid rgba(255,255,255,.15); }
.aviso-simple strong { margin-right: 0; }

/* ---------- aviso de privacidad ---------- */
.legal { padding: clamp(2rem, 1rem + 3vw, 3.5rem) 0 4rem; max-width: 46rem; }
.legal h1 { max-width: 24ch; }
.legal-date { color: var(--acero-2); font-size: var(--s-1); }
.legal section { margin-top: 2.5rem; scroll-margin-top: 80px; }
.legal h2 { font-size: var(--s1); font-stretch: 112%; max-width: none; padding-top: 1rem; border-top: 2px solid var(--acero); }
.legal h3 { font-size: var(--s0); margin-top: 1.25rem; }
.legal ul, .legal ol { padding-left: 1.25rem; }
.legal li { margin-bottom: .5rem; }
.toc { background: var(--blanco); padding: 1.25rem 1.5rem; border-left: 6px solid var(--seguridad); margin-top: 1.5rem; }
.toc ol { margin: 0; columns: 1; }
@media (min-width: 48em) { .toc ol { columns: 2; column-gap: 2.5rem; } }
.footer .wrap + .wrap { margin-top: 0; }

/* ---------- inicio: selector por necesidad ---------- */
.needs { background: var(--niebla); }
.needs-list { list-style: none; padding: 0; margin: 1.5rem 0 0; display: grid; gap: 1rem; }
@media (min-width: 60em) { .needs-list { grid-template-columns: repeat(3, 1fr); gap: 1.5rem; } }
.need { display: flex; align-items: center; justify-content: space-between; gap: 1rem; height: 100%;
  padding: 1.25rem 1.25rem 1.25rem 1.5rem; background: var(--blanco); color: var(--acero); text-decoration: none;
  border-left: 6px solid var(--seguridad); border-radius: 0 6px 6px 0; }
.need:hover { background: #F7F9FA; }
.need:hover .need-ico { transform: translateX(3px); }
.need-text strong { display: block; font-size: var(--s1); font-stretch: 112%; font-weight: 700; line-height: 1.2; margin-bottom: .4rem; }
.need-text span { display: block; color: var(--acero-2); font-size: var(--s-1); }
.need-ico { width: 1.5rem; height: 1.5rem; flex: none; transition: transform .15s; }
@media (prefers-reduced-motion: reduce) { .need-ico { transition: none; } }

/* ---------- inicio: grupos de servicios ---------- */
.svc-group { margin-top: 2.5rem; }
.svc-group h3 { font-size: var(--s1); font-stretch: 112%; color: var(--acero-2); margin-bottom: .75rem; }
.svc h4 { font-size: var(--s1); font-weight: 680; font-stretch: 108%; line-height: 1.2; margin: 0 0 .35rem; }
.btn-link { background: var(--acero); color: var(--blanco); border: 2px solid var(--acero); }
.btn-link:hover { background: #2C3D4A; border-color: #2C3D4A; }

/* ---------- inicio: sedes ---------- */
.sites { background: var(--blanco); }
.sites-list { list-style: none; padding: 0; margin: 1.5rem 0 0; display: grid; gap: 1.5rem; }
@media (min-width: 48em) { .sites-list { grid-template-columns: repeat(3, 1fr); gap: 2rem; } }
.sites-list li { padding-top: 1rem; border-top: 3px solid var(--acero); }
.sites-list h3 { font-size: var(--s0); font-stretch: 112%; margin-bottom: .35rem; }
.sites-list p { margin: 0 0 .25rem; color: var(--acero-2); }