:root{
  --ink:#0b1624;
  --ink-2:#10263d;
  --blue:#173b5f;
  --paper:#f7f5ef;
  --white:#ffffff;
  --muted:#647080;
  --line:#dfe4e8;
  --gold:#c49a55;
  --gold-2:#e4c892;
  --max:1240px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Arial,Helvetica,sans-serif;color:var(--ink);background:#fff;line-height:1.55}
a{text-decoration:none;color:inherit}
.wrap{width:min(calc(100% - 48px),var(--max));margin:0 auto}
.topbar{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid rgba(11,22,36,.08)}
.nav{min-height:84px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:flex;align-items:center;gap:13px}
.brand-symbol{width:42px;height:42px;display:grid;place-items:center;background:var(--ink);color:#fff;font-weight:800;font-size:20px}
.brand-copy{display:flex;flex-direction:column;line-height:1.05}.brand-copy strong{font-size:17px;letter-spacing:.08em}.brand-copy small{margin-top:5px;color:#6f7882;font-size:9px;letter-spacing:.13em}
.menu{display:flex;align-items:center;gap:24px;font-size:13px;color:#4d5967}.menu a{transition:.2s}.menu a:hover{color:var(--ink)}.contact-link{padding:11px 16px;border:1px solid var(--ink)}.menu-btn{display:none;border:0;background:transparent;font-size:24px;cursor:pointer}
.hero{background:var(--paper)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(430px,.92fr);min-height:720px}
.hero-copy{padding:96px 64px 72px 0;display:flex;flex-direction:column;justify-content:center}
.kicker,.section-label{margin:0 0 18px;color:#8a6428;font-size:11px;font-weight:800;letter-spacing:.18em;text-transform:uppercase}
h1,h2,h3,p{margin-top:0}h1{margin-bottom:28px;font-size:clamp(62px,8vw,112px);line-height:.88;letter-spacing:-.065em;font-weight:700}h1 span{color:#9e762f}h2{margin-bottom:22px;font-size:clamp(38px,5vw,66px);line-height:1.02;letter-spacing:-.045em}h3{font-size:24px;line-height:1.15;letter-spacing:-.025em}
.lead{max-width:720px;margin-bottom:32px;color:#566170;font-size:18px;line-height:1.75}.hero-actions{display:flex;gap:12px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:50px;padding:0 20px;font-weight:700;font-size:13px}.btn-dark{background:var(--ink);color:#fff}.btn-ghost{border:1px solid #bcc4ca;background:#fff}.facts{margin-top:58px;padding-top:24px;display:grid;grid-template-columns:repeat(3,1fr);gap:18px;border-top:1px solid #cfd5d9}.facts div{display:flex;flex-direction:column}.facts strong{font-size:14px}.facts span{margin-top:4px;color:#8a929b;font-size:11px}
.hero-media{position:relative;min-height:720px;background:linear-gradient(rgba(9,22,36,.14),rgba(9,22,36,.14)),url('https://images.unsplash.com/photo-1541888946425-d81bb19240f5?auto=format&fit=crop&w=1400&q=85') center/cover no-repeat}.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(7,18,31,.66))}.hero-badge{position:absolute;z-index:2;left:34px;right:34px;bottom:32px;padding:22px 24px;background:rgba(7,18,31,.84);color:#fff;backdrop-filter:blur(8px)}.hero-badge span{display:block;margin-bottom:7px;color:var(--gold-2);font-size:10px;font-weight:800;letter-spacing:.14em}.hero-badge strong{font-size:20px;line-height:1.25}
.intro{padding:112px 0}.intro-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:100px;align-items:start}.intro-copy{padding-top:8px}.intro-copy p{color:#596575;font-size:17px;line-height:1.9}.intro-copy p:last-child{margin-bottom:0}
.services{padding:108px 0;background:#f4f6f7}.section-head{max-width:760px}.service-grid{margin-top:46px;display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid #cfd5d9;border-left:1px solid #cfd5d9}.service-grid article{min-height:285px;padding:30px;background:#fff;border-right:1px solid #cfd5d9;border-bottom:1px solid #cfd5d9}.service-grid article>span{display:block;margin-bottom:72px;color:#a1762d;font-size:11px;font-weight:800}.service-grid p{margin-bottom:0;color:#687381;font-size:14px;line-height:1.7}
.projects{padding:112px 0;background:#fff}.projects-head{display:grid;grid-template-columns:.9fr 1.1fr;gap:90px;align-items:end}.projects-head .section-head{max-width:none}.projects-intro{margin:0;color:#647080;font-size:16px;line-height:1.8}.project-grid{margin-top:52px;display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.project-card{position:relative;min-height:380px;padding:32px;border:1px solid #d7dde2;background:#fff;display:flex;flex-direction:column;overflow:hidden;transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}.project-card:hover{transform:translateY(-4px);border-color:#b9c3cb;box-shadow:0 18px 42px rgba(11,22,36,.08)}.project-card::before{content:"";position:absolute;left:0;top:0;width:4px;height:100%;background:#c49a55}.project-top{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:46px}.project-number{color:#9a732f;font-size:11px;font-weight:800;letter-spacing:.14em}.project-status{padding:7px 10px;border:1px solid #d8dee3;background:#f7f8f9;color:#586371;font-size:10px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.project-card h3{max-width:520px;margin-bottom:14px;font-size:29px}.project-location{margin-bottom:20px;color:#8a6428;font-size:11px;font-weight:800;letter-spacing:.11em;text-transform:uppercase}.project-card>p{margin-bottom:28px;color:#66717e;font-size:14px;line-height:1.75}.project-meta{margin-top:auto;display:grid;grid-template-columns:1fr 1fr;border-top:1px solid #e2e6e9}.project-meta div{padding:16px 0 0;display:flex;flex-direction:column;gap:3px}.project-meta div+div{padding-left:18px;border-left:1px solid #e2e6e9}.project-meta span{color:#8a929b;font-size:10px;text-transform:uppercase;letter-spacing:.08em}.project-meta strong{font-size:13px}.project-card.flagship{background:var(--ink);color:#fff;border-color:var(--ink)}.project-card.flagship::before{background:var(--gold-2)}.project-card.flagship .project-number,.project-card.flagship .project-location{color:var(--gold-2)}.project-card.flagship .project-status{border-color:rgba(255,255,255,.18);background:rgba(255,255,255,.07);color:#fff}.project-card.flagship>p{color:rgba(255,255,255,.62)}.project-card.flagship .project-meta{border-color:rgba(255,255,255,.14)}.project-card.flagship .project-meta div+div{border-color:rgba(255,255,255,.14)}.project-card.flagship .project-meta span{color:rgba(255,255,255,.42)}.project-note{margin:22px 0 0;color:#8a929b;font-size:11px;line-height:1.7}
.image-band{background:var(--ink);color:#fff}.band-grid{display:grid;grid-template-columns:1.1fr .9fr;min-height:590px}.band-image{margin-left:calc((100vw - min(calc(100vw - 48px),var(--max)))/-2);background:url('https://images.unsplash.com/photo-1504307651254-35680f356dfd?auto=format&fit=crop&w=1600&q=85') center/cover no-repeat}.band-copy{padding:86px 0 72px 70px;display:flex;flex-direction:column;justify-content:center}.light{color:var(--gold-2)}.band-copy h2{color:#fff}.sector-list{margin-top:30px;display:grid;grid-template-columns:1fr 1fr;border-top:1px solid rgba(255,255,255,.14)}.sector-list span{padding:15px 0;border-bottom:1px solid rgba(255,255,255,.14);color:rgba(255,255,255,.68);font-size:13px}
.oxi{padding:112px 0}.oxi-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:100px}.oxi-intro{max-width:600px;color:#65717f;font-size:17px;line-height:1.85}.steps{border-top:1px solid var(--line)}.steps>div{display:grid;grid-template-columns:68px 1fr;gap:14px;padding:24px 0;border-bottom:1px solid var(--line)}.steps b{color:#a0742c;font-size:12px}.steps span{display:flex;flex-direction:column;gap:5px}.steps strong{font-size:18px}.steps small{color:#6c7681;font-size:13px}
.group{padding:108px 0;background:var(--paper)}.group-card{display:grid;grid-template-columns:72px 1fr;gap:26px;align-items:start;max-width:930px;padding:30px 32px;background:#fff;border:1px solid #d9dfe3}.group-card.parent{margin-top:42px}.group-card.child{margin-left:110px}.company-logo{width:56px;height:56px;display:grid;place-items:center;background:var(--ink);color:#fff;font-weight:800}.company-logo.outline{background:#fff;color:var(--ink);border:1px solid var(--ink)}.group-card small{display:block;margin-bottom:8px;color:#9b7330;font-size:9px;font-weight:800;letter-spacing:.14em}.group-card h3{margin-bottom:9px}.group-card p{margin-bottom:0;color:#687381;font-size:14px}.group-line{width:1px;height:36px;margin-left:138px;background:#b8c0c6}
.contact{padding:108px 0;background:var(--ink);color:#fff}.contact-grid{display:grid;grid-template-columns:1fr .9fr;gap:100px}.contact h2{color:#fff}.contact p{max-width:600px;color:rgba(255,255,255,.58);font-size:16px;line-height:1.75}.contact-box{border-top:1px solid rgba(255,255,255,.14)}.contact-box>a:not(.contact-cta),.contact-box>div{padding:21px 0;display:flex;justify-content:space-between;gap:24px;border-bottom:1px solid rgba(255,255,255,.14)}.contact-box span{color:rgba(255,255,255,.45);font-size:11px}.contact-box strong{font-size:13px}.contact-cta{margin-top:28px;display:flex;justify-content:center;padding:16px 20px;background:var(--gold);color:#151515;font-weight:800;font-size:13px}
footer{padding:24px 0;background:#07111d;color:rgba(255,255,255,.45);font-size:11px}.footer-grid{display:flex;justify-content:space-between;gap:20px}
@media(max-width:980px){.menu-btn{display:block}.menu{position:absolute;top:84px;left:0;right:0;display:none;flex-direction:column;align-items:stretch;gap:0;padding:16px 24px 24px;background:#fff;border-bottom:1px solid var(--line)}.menu.open{display:flex}.menu a{padding:13px 0}.contact-link{margin-top:8px;text-align:center}.hero-grid{grid-template-columns:1fr}.hero-copy{padding-right:0}.hero-media{min-height:520px}.intro-grid,.oxi-grid,.contact-grid,.band-grid,.projects-head{grid-template-columns:1fr;gap:48px}.band-image{margin-left:0;min-height:440px}.band-copy{padding:68px 0}.service-grid{grid-template-columns:repeat(2,1fr)}.project-grid{grid-template-columns:1fr}.group-card.child{margin-left:50px}.group-line{margin-left:78px}}
@media(max-width:640px){.wrap{width:min(calc(100% - 28px),var(--max))}.nav{min-height:74px}.menu{top:74px}.hero-copy{padding:70px 0 54px}.hero-grid{min-height:auto}.hero-media{min-height:420px}.facts{grid-template-columns:1fr}.intro,.services,.projects,.oxi,.group,.contact{padding:76px 0}.intro-grid{gap:34px}.service-grid{grid-template-columns:1fr}.service-grid article{min-height:auto}.service-grid article>span{margin-bottom:36px}.project-card{min-height:auto;padding:26px}.project-top{margin-bottom:32px}.project-meta{grid-template-columns:1fr}.project-meta div+div{padding-left:0;border-left:0}.sector-list{grid-template-columns:1fr}.group-card,.group-card.child{margin-left:0;grid-template-columns:1fr;padding:24px}.group-line{margin-left:28px}.contact-box>a:not(.contact-cta),.contact-box>div{flex-direction:column;gap:5px}.footer-grid{flex-direction:column}.hero-media,.band-image{background-position:center}}

/* Acceso comercial a construcción privada desde la portada. */
.private-entry{padding:78px 0;background:#f0eee8;border-top:1px solid #e2ded5;border-bottom:1px solid #e2ded5}
.private-entry-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:64px;align-items:center}
.private-entry h2{font-size:clamp(32px,4vw,52px);margin-bottom:20px}
.private-entry p:not(.section-label){color:#647080;font-size:16px;line-height:1.75;max-width:670px;margin:0}
.private-entry-actions{border-left:1px solid #cfd5d9;padding-left:42px;display:flex;flex-direction:column;align-items:flex-start;gap:18px}
.private-entry-actions>span{color:#89662e;font-size:11px;line-height:1.8;letter-spacing:.1em;font-weight:800}
.private-entry-detail{font-size:13px;font-weight:700;text-decoration:underline;text-underline-offset:4px}
@media(max-width:980px){.private-entry-grid{grid-template-columns:1fr;gap:28px}.private-entry-actions{border-left:0;border-top:1px solid #cfd5d9;padding:26px 0 0}}
@media(max-width:640px){.private-entry{padding:62px 0}.private-entry-actions{align-items:stretch}.private-entry-actions .btn{justify-content:center}}