/* Aztlán Soluciones Hidráulicas · estilo de la casa (mismo que las cotizaciones)
   Banda azul marino arriba, fondo gris azulado, tarjetas blancas, etiquetas en letra técnica */
:root{
  --marca:#002859; --marca2:#2C5A92; --marca3:#DCE6F2;
  --ground:#ECEFF3; --surface:#FFFFFF; --ink:#101A24; --ink2:#4E5C6B; --ink3:#6E7D8C;
  --rule:#D2D9E0; --rule2:#E6EAEF; --banda:#002859; --banda-ink:#FFFFFF; --banda-ink2:#A9BFD8;
  --ok:#1E7B4F; --bad:#B3261E; --wa:#1F8A4C;
  --f-disp:"Archivo","Helvetica Neue",Arial,sans-serif;
  --f-body:"Source Sans 3","Helvetica Neue",Arial,sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
  --r:8px; --max:1160px;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --marca:#8DB4E2; --marca2:#6E9BD0; --marca3:#1A2A40;
  --ground:#0B1219; --surface:#131C25; --ink:#E5EBF1; --ink2:#A3B1C0; --ink3:#8291A0;
  --rule:#24313D; --rule2:#1C2731; --banda:#001B3B; --banda-ink:#FFFFFF; --banda-ink2:#9DB4CE;
  --ok:#6FD3A0; --bad:#FF9A8F; --wa:#2FA463; color-scheme:dark}}
:root[data-theme="dark"]{
  --marca:#8DB4E2; --marca2:#6E9BD0; --marca3:#1A2A40;
  --ground:#0B1219; --surface:#131C25; --ink:#E5EBF1; --ink2:#A3B1C0; --ink3:#8291A0;
  --rule:#24313D; --rule2:#1C2731; --banda:#001B3B; --banda-ink:#FFFFFF; --banda-ink2:#9DB4CE;
  --ok:#6FD3A0; --bad:#FF9A8F; --wa:#2FA463; color-scheme:dark}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--ground);color:var(--ink);font-family:var(--f-body);font-size:18px;line-height:1.55}
img{max-width:100%;height:auto;display:block}
a{color:var(--marca2)}
:focus-visible{outline:3px solid var(--marca2);outline-offset:2px;border-radius:4px}
.wrap{max-width:var(--max);margin:0 auto;padding-left:max(18px,env(safe-area-inset-left,0px));padding-right:max(18px,env(safe-area-inset-right,0px))}
h1,h2,h3{font-family:var(--f-disp);color:var(--marca);margin:0;line-height:1.12;text-wrap:balance;letter-spacing:-.01em}
h1{font-size:clamp(34px,5.2vw,56px);font-weight:800}
h2{font-size:clamp(28px,3.6vw,40px);font-weight:700}
h3{font-size:22px;font-weight:700}
p{margin:0}
.lab{font-family:var(--f-mono);font-size:12.5px;letter-spacing:.13em;text-transform:uppercase;color:var(--ink3)}
.lead{font-size:20px;color:var(--ink2);max-width:64ch}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font:600 17px var(--f-body);text-decoration:none;border-radius:8px;padding:14px 22px;border:2px solid transparent;cursor:pointer}
.btn-p{background:var(--marca2);color:#fff}
.btn-p:hover{filter:brightness(1.08)}
.btn-w{background:#fff;color:#002859}
.btn-o{border-color:currentColor;color:inherit;background:transparent}
.btn-wa{background:var(--wa);color:#fff}
.btn svg{width:20px;height:20px;flex:none}

/* encabezado */
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:20;background:var(--banda)}
.hdr{position:sticky;top:env(safe-area-inset-top,0px);z-index:15;background:var(--banda);color:var(--banda-ink)}
.hdr .wrap{display:flex;align-items:center;gap:18px;padding-block:12px}
.hdr .logo img{height:54px;width:auto}
@media (min-width:961px){.hdr .logo img{height:72px}}
.nav{display:flex;gap:20px;margin-left:auto;font-size:16px}
.nav a{color:var(--banda-ink);text-decoration:none;opacity:.88}
.nav a:hover,.nav a[aria-current="page"]{opacity:1;text-decoration:underline;text-underline-offset:6px}
.hdr .btn{padding:10px 16px;font-size:16px}
.menu-btn{display:none;margin-left:auto;background:transparent;border:1px solid rgba(255,255,255,.4);color:#fff;border-radius:8px;padding:8px 12px;font:600 15px var(--f-body)}
@media (max-width:960px){
  .nav{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;gap:0;background:var(--banda);padding:8px max(18px,env(safe-area-inset-left,0px)) 16px}
  .nav a{padding:12px 0;border-top:1px solid rgba(255,255,255,.12)}
  .nav.open{display:flex}
  .menu-btn{display:block}
  .hdr .btn{display:none}
}

/* bandas */
.hero{background:var(--banda);color:var(--banda-ink)}
.hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;padding-block:56px 64px}
.hero h1{color:#fff}
.hero .lead{color:var(--banda-ink2);margin-top:16px}
.hero .lab{color:var(--banda-ink2)}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-ph{border-radius:var(--r);overflow:hidden;aspect-ratio:4/3;background:#0a3366;max-width:100%}
.hero-ph img{width:100%;height:100%;object-fit:cover}
@media (max-width:860px){.hero .wrap{grid-template-columns:1fr;padding-block:36px 44px}}
.facts{background:#0B3A75;color:#fff}
.facts .wrap{display:grid;grid-template-columns:repeat(4,1fr)}
.fact{padding:18px 16px;border-left:1px solid rgba(255,255,255,.14);min-width:0}
.fact:first-child{border-left:0;padding-left:0}
.fact b{display:block;font-family:var(--f-disp);font-size:22px}
.fact span{font-size:15px;color:#C9D8EA}
@media (max-width:860px){.facts .wrap{grid-template-columns:1fr 1fr}.fact{border-left:0;padding-left:0;border-top:1px solid rgba(255,255,255,.14)}.fact:nth-child(-n+2){border-top:0}}

section.blk{padding-block:64px}
.blk-h{display:grid;gap:12px;margin-bottom:30px;max-width:820px}
.alt{background:var(--surface)}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
@media (max-width:960px){.g3,.g4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:620px){.g2,.g3,.g4{grid-template-columns:1fr}}
.card{background:var(--surface);border:1px solid var(--rule);border-radius:var(--r);padding:22px 22px 24px;display:flex;flex-direction:column;gap:8px;min-width:0}
.alt .card{background:var(--ground)}
.card p{color:var(--ink2);font-size:17px}
.card .lab{color:var(--marca2)}
a.card{text-decoration:none;color:inherit}
a.card:hover{border-color:var(--marca2)}
.card .more{margin-top:auto;padding-top:8px;font-weight:600;color:var(--marca2)}
.card.k{background:var(--banda);border-color:var(--banda)}
.card.k h3{color:#fff}.card.k p{color:var(--banda-ink2)}.card.k .lab{color:var(--banda-ink2)}

/* tabla */
.tbl{background:var(--surface);border:1px solid var(--rule);border-radius:var(--r);overflow-x:auto}
table{width:100%;border-collapse:collapse;min-width:560px}
th{font-family:var(--f-mono);font-size:12px;letter-spacing:.11em;text-transform:uppercase;color:var(--ink3);text-align:left;font-weight:500;padding:14px 16px;border-bottom:2px solid var(--marca)}
td{padding:13px 16px;border-top:1px solid var(--rule2);vertical-align:top;font-size:17px}
td:first-child{font-family:var(--f-disp);font-weight:600;color:var(--marca)}
.note{font-family:var(--f-mono);font-size:13.5px;color:var(--marca2);margin-top:12px}

/* listas */
ul.pts{list-style:none;margin:0;padding:0;display:grid;gap:12px}
ul.pts li{position:relative;padding-left:24px}
ul.pts li::before{content:"";position:absolute;left:0;top:10px;width:9px;height:9px;background:var(--marca2)}
.split{display:grid;grid-template-columns:.9fr 1.1fr;gap:40px;align-items:center}
.split .ph{border-radius:var(--r);overflow:hidden;aspect-ratio:4/3}
.split .ph img{width:100%;height:100%;object-fit:cover}
@media (max-width:860px){.split{grid-template-columns:1fr}}
.callout{background:var(--banda);color:#fff;border-radius:var(--r);padding:22px 24px;display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between}
.callout p{font-size:19px;max-width:60ch}

/* pasos (secuencia real) */
.steps{list-style:none;margin:0;padding:0;display:grid;gap:16px;counter-reset:s}
.steps li{display:grid;grid-template-columns:44px 1fr;gap:14px}
.steps li::before{counter-increment:s;content:counter(s);font-family:var(--f-disp);font-weight:800;font-size:22px;width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:var(--marca2);color:#fff}
.steps b{display:block}
.steps span{color:var(--ink2)}

/* chips */
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chips span{font-family:var(--f-mono);font-size:14px;padding:8px 12px;border:1px solid var(--rule);border-radius:6px;background:var(--surface)}

/* formas */
form.f{background:var(--surface);border:1px solid var(--rule);border-radius:var(--r);padding:24px;display:grid;gap:14px;min-width:0}
.f .row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media (max-width:620px){.f .row{grid-template-columns:1fr}}
label{display:grid;gap:6px;font-size:15px;font-weight:600}
input,select,textarea{font:inherit;font-size:17px;color:var(--ink);background:var(--ground);border:1px solid var(--rule);border-radius:8px;padding:12px;width:100%}
textarea{min-height:110px;resize:vertical}
.chk{display:flex;gap:10px;align-items:flex-start;font-weight:400;font-size:15px}
.chk input{width:20px;height:20px;margin-top:2px;flex:none}
.hint{font-size:14px;color:var(--ink3);font-weight:400}
.err{color:var(--bad);font-size:15px;min-height:1px}
.ok-box{background:var(--marca3);border-radius:8px;padding:18px;display:grid;gap:10px}
.ok-box b{font-family:var(--f-disp);font-size:20px;color:var(--marca)}

/* contacto */
.crow{display:flex;justify-content:space-between;gap:12px;align-items:center;background:var(--surface);border:1px solid var(--rule);border-radius:var(--r);padding:16px 18px}
.crow strong{font-size:19px;word-break:break-word}
.copy{font:600 14px var(--f-body);border:1px solid var(--rule);background:var(--ground);color:var(--ink);border-radius:6px;padding:8px 12px;cursor:pointer;flex:none}

/* pie */
.ftr{background:var(--banda);color:var(--banda-ink2);padding-block:44px 32px;font-size:15px}
.ftr .wrap{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:28px}
.ftr img{height:48px;width:auto;margin-bottom:12px}
@media (min-width:961px){.ftr img{height:60px}}
.ftr a{color:#fff;text-decoration:none}
.ftr a:hover{text-decoration:underline}
.ftr ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.ftr .lab{color:var(--banda-ink2);display:block;margin-bottom:10px}
.ftr .legal{grid-column:1/-1;border-top:1px solid rgba(255,255,255,.14);padding-top:16px;display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between}
@media (max-width:860px){.ftr .wrap{grid-template-columns:1fr}}
.wa-f{position:fixed;right:calc(18px + env(safe-area-inset-right,0px));bottom:calc(18px + env(safe-area-inset-bottom,0px));z-index:14;width:58px;height:58px;border-radius:50%;background:var(--wa);display:grid;place-items:center;box-shadow:0 6px 18px rgba(0,0,0,.25)}
.wa-f svg{width:30px;height:30px}
.crumbs{font-family:var(--f-mono);font-size:13px;color:var(--banda-ink2);margin-bottom:10px}
.crumbs a{color:var(--banda-ink2)}
.prose{max-width:760px;display:grid;gap:14px}
.prose h2{font-size:26px;margin-top:18px}
.prose ul{margin:0;padding-left:22px;display:grid;gap:6px}
[hidden]{display:none!important}