:root{
  --bg:#f4f8fb; --surface:#fff; --ink:#0f2238; --muted:#51627a; --line:#d8e3ee;
  --blue:#0098dc; --green:#39a935; --navy:#0b2540; --tint:#e6f4fb;
  --head:"Archivo","Arial Narrow",Arial,sans-serif; --body:"Source Sans 3",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  box-sizing:border-box; padding-top:env(safe-area-inset-top,0px); padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]) .logo img{background:#fff;padding:2px 8px}
  :root:not([data-theme="light"]){--bg:#0b1626;--surface:#12233a;--ink:#eaf1f8;--muted:#a3b4c9;--line:#25384f;--blue:#3bb6f0;--green:#5cc455;--tint:#16304a}
}
:root[data-theme="dark"] .logo img{background:#fff;padding:2px 8px}
:root[data-theme="dark"]{--bg:#0b1626;--surface:#12233a;--ink:#eaf1f8;--muted:#a3b4c9;--line:#25384f;--blue:#3bb6f0;--green:#5cc455;--tint:#16304a}
*,*::before,*::after{box-sizing:inherit}
html{scroll-padding-top:calc(env(safe-area-inset-top,0px) + 76px);scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:400 1.0625rem/1.6 var(--body)}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);background:var(--bg);z-index:10}
svg{max-width:100%}
a{color:inherit}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px}
.wrap{width:min(1100px,100% - 2.5rem);margin-inline:auto}
h1,h2,h3{font-family:var(--head);font-stretch:85%;line-height:1.1;margin:0;letter-spacing:-.01em}
header{position:sticky;top:env(safe-area-inset-top,0px);z-index:11;background:var(--bg);border-bottom:1px solid var(--line)}
header .wrap{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:68px}
.logo{display:flex;align-items:center;text-decoration:none}
.logo img{display:block;height:48px;width:auto;border-radius:6px}
nav{display:flex;align-items:center;gap:1.4rem}
nav a:not(.btn){text-decoration:none;font-weight:600;color:var(--muted)}
nav a:not(.btn):hover{color:var(--ink)}
.btn{display:inline-block;background:var(--blue);color:#04192d;font:700 1rem var(--head);font-stretch:90%;padding:.75rem 1.4rem;border-radius:999px;text-decoration:none;border:0;cursor:pointer}
.btn:hover{filter:brightness(1.08)}
.btn.alt{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.7)}
.hero{color:#fff;background:radial-gradient(circle at 88% 12%,rgba(255,196,60,.38),transparent 38%),linear-gradient(135deg,#0b2540 0%,#0d4268 65%,#0a6a8c 100%)}
.hero .wrap{display:grid;grid-template-columns:1.25fr .75fr;gap:2rem;align-items:center;padding:clamp(3rem,7vw,5.5rem) 0 2rem}
.hero h1{font-size:clamp(2.7rem,7.5vw,5.2rem);font-weight:800;max-width:11ch}
.hero .lead{font-size:1.2rem;max-width:52ch;color:#d3e4f2;margin:1.25rem 0 1.75rem}
.cta{display:flex;gap:.75rem;flex-wrap:wrap}
.art{width:100%;height:auto}
.scale{display:grid;grid-template-columns:1fr 2fr 1.4fr;gap:1.5rem;padding:0 0 3rem;color:#fff}
.scale div{border-top:3px solid var(--blue);padding-top:.8rem}
.scale div:nth-child(2){border-color:var(--green)}
.scale div:nth-child(3){border-color:#ffc43c}
.scale b{display:block;font:700 1.5rem var(--head);font-stretch:85%}
.scale span{color:#c3d6e6;font-size:.96rem}
section{padding:4rem 0}
.sec-head{max-width:60ch;margin-bottom:2rem}
.sec-head h2{font-size:clamp(1.9rem,4vw,2.7rem);font-weight:700}
.sec-head p{color:var(--muted);margin:.8rem 0 0}
.about{display:grid;grid-template-columns:1fr 1fr;gap:2.5rem}
.about p{margin:0 0 1rem}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:1.25rem}
.card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:1.6rem;transition:transform .2s,box-shadow .2s}
.card:hover{transform:translateY(-3px);box-shadow:0 10px 28px rgba(11,37,64,.12)}
.ico{width:48px;height:48px;border-radius:12px;background:var(--tint);color:var(--blue);display:grid;place-items:center;margin-bottom:1rem}
.ico svg{width:26px;height:26px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:1.35rem;margin-bottom:.5rem}
.card p{margin:0;color:var(--muted);font-size:1rem}
.card.go{background:var(--navy);border-color:var(--navy);color:#fff;display:flex;flex-direction:column;justify-content:center;gap:1rem}
.card.go p{color:#c3d6e6}
.why{background:var(--tint)}
.why .grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.why h3{font-size:1.3rem;margin-bottom:.4rem;border-left:4px solid var(--green);padding-left:.8rem}
.why p{margin:0;color:var(--muted);padding-left:1rem}
.solar{background:var(--navy);color:#fff}
.solar .sec-head p{color:#c3d6e6}
.tile{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:16px;padding:1.5rem}
.tile .ico{background:rgba(59,182,240,.18);color:#6fd0ff}
.tile h3{font-size:1.3rem;margin-bottom:.4rem}
.tile p{margin:0;color:#c3d6e6;font-size:1rem}
.contact{display:grid;grid-template-columns:1fr 1fr;gap:2.5rem}
address{font-style:normal}
address p{margin:0 0 1rem}
form{display:grid;gap:.9rem;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:1.5rem}
label{font-weight:600;font-size:.95rem;display:grid;gap:.3rem}
input,textarea,select{font:inherit;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:.7rem .8rem;width:100%}
textarea{min-height:110px;resize:vertical}
.note{font-size:.9rem;color:var(--muted);margin:0}
footer{background:var(--navy);color:#b7c9da;padding:1.8rem 0 2.5rem;font-size:.93rem}
@media (max-width:800px){
  .hero .wrap,.about,.contact,.scale{grid-template-columns:1fr}
  .art{display:none}
  nav a:not(.btn){display:none}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.card{transition:none}}
.flash{margin:0;padding:.8rem 1rem;border-radius:8px;font-weight:600}.flash.ok{background:#dff3e0;color:#14501a}.flash.err{background:#fde4e4;color:#7a1414}