/* ==========================================================================
   Solvar EPC: estilos base del sitio (todas las páginas)
   Se editan a mano. Las páginas se arman con 05 - Scripts Internos/build_solvar_site.py
   Herramientas (calculadoras y mapas): solvar-tools.css
   ========================================================================== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--n:#FF7A1A;--nd:#E56A0E;--v:#08090D;--v2:#0F1117;--v3:#171A23;--off:#F0F2F5;--si:#8892A4;--ln:rgba(255,255,255,.09);--wh:#FFF;--ok:#00C896;--warn:#F0A520}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{background:var(--v);font-family:'DM Sans',sans-serif;color:var(--off);-webkit-font-smoothing:antialiased;line-height:1.55}
h1,h2,h3,h4{font-family:'Syne',sans-serif;line-height:1.1;color:var(--wh)}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}
[hidden]{display:none!important}
:focus-visible{outline:2px solid var(--n);outline-offset:3px;border-radius:2px}
.mono{font-family:'DM Mono',monospace}
.mu{color:var(--si)}
.wrap{max-width:1240px;margin:0 auto;padding:0 40px}
.wrap.wide{max-width:1360px}
section{padding:104px 0}
.alt{background:var(--v2)}
.kicker{font-family:'DM Mono',monospace;font-size:11px;font-weight:500;letter-spacing:.18em;text-transform:uppercase;color:var(--n);display:block;margin-bottom:18px}
.h2{font-size:clamp(28px,3.4vw,46px);font-weight:800;margin-bottom:18px}
.lede{font-size:16px;font-weight:300;color:rgba(240,242,245,.76);max-width:640px;line-height:1.75}
.btn{display:inline-block;background:var(--n);color:var(--v);font-weight:600;font-size:14px;padding:14px 30px;border-radius:2px;transition:background .2s;border:none;cursor:pointer;font-family:'DM Sans',sans-serif;text-align:center}
.btn:hover{background:var(--nd)}
.btn-o{display:inline-block;color:var(--off);border:1px solid rgba(255,255,255,.28);font-size:14px;padding:13px 28px;border-radius:2px;transition:border-color .2s,background .2s}
.btn-o:hover{border-color:rgba(255,255,255,.6);background:rgba(255,255,255,.04)}
.go{font-size:13px;font-weight:600;color:var(--n);display:inline-flex;gap:8px;align-items:center;transition:gap .2s}
.go:hover{gap:12px}
.tag{display:inline-block;font-family:'DM Mono',monospace;font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--n);border:1px solid rgba(255,122,26,.4);padding:4px 9px;border-radius:2px}
.tag.dev{color:var(--off);border-color:rgba(255,255,255,.22)}
.row-cta{margin-top:40px;display:flex;gap:16px;flex-wrap:wrap;align-items:center}
.row-cta small{font-size:12.5px;color:var(--si)}

/* aparición suave: solo oculta si hay JS; sin JS todo se ve */
.js .rv{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.js .rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.js .rv{opacity:1;transform:none;transition:none}}

/* NAV */
nav{position:fixed;top:0;left:0;right:0;z-index:1200;height:62px;padding:0 40px;display:flex;align-items:center;justify-content:space-between;background:rgba(8,9,13,.9);backdrop-filter:blur(16px);border-bottom:1px solid var(--ln)}
.logo{font-family:'Syne',sans-serif;font-weight:800;font-size:17px;display:flex;align-items:center;white-space:nowrap}
.logo img{height:22px;width:auto;margin-right:10px}
.logo em{font-style:normal;color:var(--n)}
.nav-l{display:flex;gap:26px;align-items:center}
.nav-l a{font-size:13px;color:var(--si);transition:color .2s}
.nav-l a:hover,.nav-l a.on{color:var(--off)}
.nav-l .nav-cta{background:var(--n);color:var(--v);font-size:12.5px;font-weight:600;padding:9px 18px;border-radius:2px}
.nav-l .nav-cta:hover{background:var(--nd);color:var(--v)}
.burger{display:none;background:none;border:1px solid var(--ln);color:var(--off);width:42px;height:38px;border-radius:2px;cursor:pointer;align-items:center;justify-content:center}
.burger svg{width:20px;height:20px}

/* HERO (inicio) */
.hero{position:relative;min-height:calc(100vh - 20px);display:flex;align-items:center;overflow:hidden;padding:0;
  background:
    radial-gradient(900px 520px at 78% 38%,rgba(255,122,26,.13),transparent 62%),
    linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px) 0 0/64px 64px,
    linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px) 0 0/64px 64px,
    var(--v)}
.hero .wrap{width:100%;display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center;padding-top:110px;padding-bottom:64px}
.hero h1{font-size:clamp(38px,4.3vw,62px);font-weight:800;margin-bottom:24px}
.hero h1 em,.phd h1 em{font-style:normal;color:var(--n)}
.hero .lede{margin-bottom:38px;max-width:560px}
.hero-art img{width:100%;max-width:600px;margin:0 auto;height:auto}
.meta{grid-column:1/-1;font-family:'DM Mono',monospace;font-size:11px;color:var(--si);letter-spacing:.08em;display:flex;gap:14px 36px;flex-wrap:wrap;border-top:1px solid var(--ln);padding-top:20px;margin-top:34px}
.meta b{color:var(--n);font-weight:500;margin-right:6px}

/* ENCABEZADO de páginas interiores */
.phd{padding:136px 0 70px;background:radial-gradient(760px 320px at 85% 0,rgba(255,122,26,.12),transparent 70%),var(--v)}
.phd h1{font-size:clamp(30px,4vw,56px);font-weight:800;margin-bottom:18px;max-width:900px}
.phd .lede{max-width:700px}
.migas{font-family:'DM Mono',monospace;font-size:11px;letter-spacing:.12em;color:var(--si);margin-bottom:22px;text-transform:uppercase}
.migas a{color:var(--n)}
.migas a:hover{text-decoration:underline}

/* TARJETAS DE FRENTES (proyectos que hacemos) */
.mk-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:52px}
.mk{background:var(--v2);border:1px solid var(--ln);border-top:2px solid var(--n);border-radius:3px;padding:30px 28px 28px;display:flex;flex-direction:column;transition:border-color .2s,transform .2s}
.alt .mk{background:var(--v)}
a.mk:hover,.mk:hover{border-color:rgba(255,122,26,.5);transform:translateY(-3px)}
.mk .n{font-family:'DM Mono',monospace;font-size:11px;color:var(--n);letter-spacing:.12em;margin-bottom:20px}
.mk h3{font-size:23px;margin-bottom:14px}
.mk p{font-size:14px;color:var(--si);line-height:1.75;margin-bottom:20px}
.mk ul{margin-bottom:26px;border-top:1px solid var(--ln)}
.mk li{font-size:13px;color:var(--off);padding:10px 0 10px 22px;border-bottom:1px solid var(--ln);position:relative;line-height:1.5}
.mk li::before{content:'';position:absolute;left:0;top:18px;width:10px;height:2px;background:var(--n)}
.mk .go{margin-top:auto}

/* QUIÉNES SOMOS (resumen del inicio) */
.about{display:grid;grid-template-columns:1.1fr 1fr;gap:64px;align-items:start}
.pilares{border-top:1px solid var(--ln)}
.pilar{display:grid;grid-template-columns:44px 1fr;gap:16px;padding:20px 0;border-bottom:1px solid var(--ln)}
.pilar b{font-family:'DM Mono',monospace;font-size:12px;color:var(--n);font-weight:500;padding-top:3px}
.pilar h3{font-size:17px;margin-bottom:6px}
.pilar p{font-size:13.5px;color:var(--si);line-height:1.7}

/* FRANJA DE OPERACIÓN INTELIGENTE (inicio) */
.franja{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center;background:linear-gradient(135deg,rgba(255,122,26,.09),rgba(255,122,26,.02) 60%),var(--v2);border:1px solid rgba(255,122,26,.25);border-radius:4px;padding:44px}
.franja h2{font-size:clamp(24px,2.8vw,36px);font-weight:800;margin-bottom:14px}
.franja p{font-size:15px;color:rgba(240,242,245,.78);line-height:1.75;margin-bottom:24px;max-width:520px}
.franja ul{border-top:1px solid var(--ln)}
.franja li{padding:13px 0;border-bottom:1px solid var(--ln);font-size:14px;color:var(--off);display:flex;gap:14px;align-items:baseline;justify-content:space-between}
.franja li b{font-family:'DM Mono',monospace;font-size:11px;color:var(--n);font-weight:500;letter-spacing:.1em}

/* CIERRE (llamada final) */
.cierre{text-align:center;padding:96px 0}
.cierre .h2{margin-left:auto;margin-right:auto;max-width:760px}
.cierre .lede{margin:0 auto 34px}

/* SERVICIOS */
.svc .row{display:grid;grid-template-columns:90px 1fr 340px;gap:32px;padding:34px 0;border-top:1px solid var(--ln);align-items:start}
.svc .row:last-of-type{border-bottom:1px solid var(--ln)}
.svc .n{font-family:'DM Mono',monospace;font-size:13px;color:var(--n)}
.svc h3{font-size:22px;margin-bottom:10px}
.svc p{font-size:14px;color:var(--si);line-height:1.75}
.spec{font-family:'DM Mono',monospace;font-size:11.5px;color:var(--off);line-height:2.05}
.spec span{color:var(--si);margin-right:6px}
.method h3{font-size:clamp(22px,2.4vw,30px);margin-bottom:34px}
.tl{display:grid;grid-template-columns:repeat(5,1fr)}
.ph{padding:26px 20px 0;border-left:1px solid rgba(255,122,26,.3);position:relative}
.ph::before{content:'';position:absolute;top:0;left:-4px;width:7px;height:7px;border-radius:50%;background:var(--n)}
.ph .f{font-family:'DM Mono',monospace;font-size:10px;color:var(--n);letter-spacing:.1em;display:block;margin-bottom:10px}
.ph h4{font-family:'Syne',sans-serif;font-size:16px;color:var(--wh);margin-bottom:8px}
.ph p{font-size:12.5px;color:var(--si);line-height:1.7}

/* INGENIERÍA DE PRECISIÓN */
.prec .grid{display:grid;grid-template-columns:1.2fr 1fr;gap:64px;align-items:center}
.prec ul{margin-top:26px}
.prec li{font-size:14px;color:var(--off);padding:13px 0 13px 28px;border-bottom:1px solid var(--ln);position:relative;line-height:1.55}
.prec li:first-child{border-top:1px solid var(--ln)}
.prec li::before{content:'';position:absolute;left:0;top:22px;width:12px;height:2px;background:var(--n)}
.panel{background:var(--v2);border:1px solid rgba(255,122,26,.25);border-radius:4px;padding:32px;font-family:'DM Mono',monospace}
.alt .panel{background:var(--v)}
.panel .t{font-size:10.5px;color:var(--n);letter-spacing:.14em;margin-bottom:20px}
.panel .r{display:flex;justify-content:space-between;gap:16px;font-size:12px;padding:11px 0;border-top:1px solid var(--ln)}
.panel .r span:first-child{color:var(--si)}
.panel .r span:last-child{text-align:right;color:var(--off)}

/* DETALLE DE UN FRENTE (página de proyectos) */
.fr{display:grid;grid-template-columns:.9fr 1.1fr;gap:64px;align-items:start;padding:72px 0;border-top:1px solid var(--ln)}
.fr:first-of-type{border-top:none;padding-top:0}
.fr h2{font-size:clamp(26px,3vw,38px);font-weight:800;margin-bottom:16px}
.fr .lede{font-size:15px}
.fr .n{font-family:'DM Mono',monospace;font-size:11px;color:var(--n);letter-spacing:.14em;display:block;margin-bottom:14px}
.fr-d h3{font-size:12px;font-family:'DM Mono',monospace;letter-spacing:.14em;text-transform:uppercase;color:var(--n);font-weight:500;margin:0 0 12px}
.fr-d h3:not(:first-child){margin-top:30px}
.fr-d li{font-size:14px;color:var(--off);padding:11px 0 11px 24px;border-bottom:1px solid var(--ln);position:relative;line-height:1.55}
.fr-d li:first-of-type{border-top:1px solid var(--ln)}
.fr-d li::before{content:'';position:absolute;left:0;top:20px;width:11px;height:2px;background:var(--n)}
.fr-d p{font-size:14px;color:var(--si);line-height:1.75}

/* OPERACIÓN CON IA */
.op-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.op{background:var(--v2);border:1px solid var(--ln);border-radius:3px;padding:30px 30px 26px;position:relative;overflow:hidden}
.op::after{content:'';position:absolute;right:-60px;top:-60px;width:170px;height:170px;border-radius:50%;background:radial-gradient(circle,rgba(255,122,26,.14),transparent 70%);pointer-events:none}
.op-h{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}
.op .n{font-family:'DM Mono',monospace;font-size:11px;color:var(--n);letter-spacing:.12em}
.op h3{font-size:22px;margin-bottom:12px}
.op p{font-size:14px;color:var(--si);line-height:1.75;margin-bottom:22px}
.io{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--ln)}
.io div{padding:14px 16px 0 0;font-size:12.5px;color:var(--off);line-height:1.6}
.io div+div{padding-left:16px;border-left:1px solid var(--ln)}
.io b{display:block;font-family:'DM Mono',monospace;font-size:10px;font-weight:500;letter-spacing:.14em;color:var(--n);margin-bottom:6px}
.human{margin-top:22px;border:1px solid rgba(255,122,26,.3);background:rgba(255,122,26,.05);border-radius:3px;padding:20px 26px;display:flex;gap:18px;align-items:center}
.human svg{flex:none;width:30px;height:30px;color:var(--n)}
.human p{font-size:14.5px;color:var(--off);line-height:1.65}
.human b{color:var(--wh);font-weight:600}
.more{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:22px}
.more div{border-top:1px solid var(--ln);padding-top:20px}
.more h4{font-family:'Syne',sans-serif;font-size:17px;color:var(--wh);margin-bottom:8px}
.more p{font-size:13.5px;color:var(--si);line-height:1.7}

/* BANDA DE PROYECTOS EN DOCUMENTACIÓN */
.band{display:grid;grid-template-columns:1fr auto;gap:30px;align-items:center;background:var(--v2);border:1px solid var(--ln);border-radius:3px;padding:28px 30px}
.alt .band{background:var(--v)}
.band h3{font-size:18px;margin-bottom:8px}
.band p{font-size:14px;color:var(--si);line-height:1.7;max-width:640px}

/* ALIANZAS */
.ali{background:linear-gradient(135deg,rgba(255,122,26,.09),rgba(255,122,26,.02) 60%),var(--v2);border:1px solid rgba(255,122,26,.25);border-radius:4px;padding:48px 44px;display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center}
.ali h2{font-size:clamp(26px,3vw,38px);font-weight:800;margin-bottom:16px}
.ali p{font-size:15px;color:rgba(240,242,245,.78);line-height:1.75;margin-bottom:26px;max-width:520px}
.ali ul{border-top:1px solid var(--ln)}
.ali li{padding:14px 0;border-bottom:1px solid var(--ln);font-size:14px;color:var(--off);display:flex;gap:14px;align-items:baseline}
.ali li b{font-family:'DM Mono',monospace;font-size:11px;color:var(--n);font-weight:500;letter-spacing:.1em;min-width:26px}

/* CONTACTO */
.cont .grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:64px;align-items:start}
.cont .via{margin-top:34px;font-family:'DM Mono',monospace;font-size:12px;color:var(--si);line-height:2}
.cont .via b{color:var(--off);font-weight:500}
.cont .via a{color:var(--n)}
.form{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form input,.form select,.form textarea{background:var(--v2);border:1px solid rgba(255,255,255,.14);color:var(--off);font-size:14px;padding:14px;border-radius:2px;font-family:'DM Sans',sans-serif;transition:border-color .15s;width:100%}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--n)}
.form ::placeholder{color:var(--si);opacity:.8}
.form .full{grid-column:1/-1}
.form textarea{min-height:130px;resize:vertical}
.form label.chk{display:flex;gap:10px;align-items:flex-start;font-size:12px;color:var(--si);line-height:1.6}
.form label.chk input{width:auto;margin-top:3px}
.form .estado{font-size:13px;color:var(--si);min-height:20px}

/* PIE */
footer{border-top:1px solid var(--ln);padding:56px 0 30px}
.f-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.f-marca p{font-size:13px;color:var(--si);line-height:1.7;margin-top:14px;max-width:300px}
.f-col h4{font-family:'DM Mono',monospace;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--n);font-weight:500;margin-bottom:14px}
.f-col a{display:block;font-size:13px;color:var(--si);padding:5px 0;transition:color .2s}
.f-col a:hover{color:var(--off)}
.f-pie{margin-top:44px;padding-top:22px;border-top:1px solid var(--ln);font-size:12px;color:var(--si);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

@media(max-width:1100px){
  .wrap{padding:0 24px}
  nav{padding:0 20px}
  .burger{display:flex}
  .nav-l{position:absolute;top:62px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:rgba(8,9,13,.98);border-bottom:1px solid var(--ln);padding:8px 20px 18px;display:none}
  .nav-l.open{display:flex}
  .nav-l a{padding:14px 4px;font-size:15px;border-bottom:1px solid var(--ln)}
  .nav-l .nav-cta{margin-top:14px;text-align:center;border-bottom:none;padding:14px}
  section{padding:80px 0}
  .phd{padding:112px 0 54px}
  .hero{min-height:0}
  .hero .wrap{grid-template-columns:1fr;padding-top:100px}
  .hero-art{order:-1;max-width:420px}
  .mk-grid{grid-template-columns:1fr}
  .about,.franja,.fr,.prec .grid,.ali,.cont .grid,.op-grid,.more{grid-template-columns:1fr}
  .about,.fr,.prec .grid,.cont .grid{gap:36px}
  .fr{padding:56px 0}
  .franja,.ali{padding:32px 24px}
  .svc .row{grid-template-columns:1fr;gap:12px}
  .tl{grid-template-columns:1fr;gap:6px}
  .band{grid-template-columns:1fr}
  .io{grid-template-columns:1fr}
  .io div+div{padding-left:0;border-left:none;border-top:1px solid var(--ln);margin-top:14px}
  .form{grid-template-columns:1fr}
  .f-grid{grid-template-columns:1fr 1fr}
  .f-marca{grid-column:1/-1}
}
@media(max-width:560px){.hero-art{display:none}.human{flex-direction:column;align-items:flex-start}.f-grid{grid-template-columns:1fr}.wrap{padding:0 18px}}