:root{
    --navy-950:#0F151C;
    --navy-900:#16202A;
    --navy-800:#202B37;
    --orange-500:#F5811F;
    --orange-600:#D9570B;
    --orange-400:#FDBA2D;
    --steel-400:#8B96A3;
    --steel-600:#5A6570;
    --paper-50:#F4F2ED;
    --paper-100:#EAE7DF;
    --ink-900:#181A1D;
    --green-500:#8FB573;
    --font-display:'Oswald', sans-serif;
    --font-body:'IBM Plex Sans', sans-serif;
    --font-mono:'IBM Plex Mono', monospace;
  }
  *{margin:0;padding:0;box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    font-family:var(--font-body);
    color:var(--ink-900);
    background:var(--paper-50);
    line-height:1.55;
  }
  a{color:inherit;text-decoration:none;}
  img{max-width:100%;display:block;}
  .wrap{max-width:1180px;margin:0 auto;padding:0 24px;}
  h1,h2,h3,h4{font-family:var(--font-display);text-transform:uppercase;letter-spacing:0.02em;}

  /* focus visibility */
  a:focus-visible, button:focus-visible{outline:2px solid var(--orange-500);outline-offset:3px;}
  @media (prefers-reduced-motion: reduce){
    *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
  }

  /* ---------- NAV ---------- */
  header{
    position:sticky;top:0;z-index:50;
    background:rgba(18,22,29,0.94);
    backdrop-filter:blur(6px);
    border-bottom:1px solid rgba(232,121,44,0.25);
  }
  .nav{display:flex;align-items:center;justify-content:space-between;height:72px;}
  .logo{
    font-family:var(--font-display);font-weight:700;font-size:22px;letter-spacing:0.03em;color:#fff;
    display:flex;align-items:center;gap:8px;
  }
  .logo span{color:var(--orange-500);}
  .navlinks{display:flex;gap:36px;font-size:14px;letter-spacing:0.04em;text-transform:uppercase;font-weight:500;}
  .navlinks a{color:var(--steel-400);transition:color .2s;}
  .navlinks a:hover{color:#fff;}
  .nav-cta{
    background:linear-gradient(135deg,var(--orange-400),var(--orange-600));
    color:#fff;padding:11px 22px;border-radius:2px;font-size:13px;font-weight:600;
    letter-spacing:0.06em;text-transform:uppercase;border:none;cursor:pointer;
  }
  .navtoggle{display:none;background:none;border:none;color:#fff;font-size:26px;cursor:pointer;}

  /* ---------- HERO ---------- */
  .hero{
    position:relative;background:var(--navy-950);color:#fff;overflow:hidden;
    padding:120px 0 0 0;
  }
  .hero::before{
    content:"";position:absolute;inset:0;
    background-image:
      linear-gradient(rgba(232,121,44,0.07) 1px, transparent 1px),
      linear-gradient(90deg, rgba(232,121,44,0.07) 1px, transparent 1px);
    background-size:56px 56px;
    mask-image:radial-gradient(ellipse 80% 60% at 50% 30%, black 40%, transparent 100%);
    pointer-events:none;
  }
  .hero-inner{position:relative;z-index:1;text-align:center;max-width:840px;margin:0 auto;padding:0 24px;}
  .eyebrow{
    font-family:var(--font-mono);font-size:12.5px;letter-spacing:0.14em;color:var(--orange-500);
    border:1px solid rgba(232,121,44,0.4);display:inline-block;padding:6px 16px;border-radius:2px;margin-bottom:28px;
  }
  .hero h1{
    font-size:clamp(34px,5.5vw,58px);line-height:1.08;font-weight:600;margin-bottom:24px;
  }
  .hero h1 em{font-style:normal;color:var(--orange-500);}
  .hero p{
    font-family:var(--font-body);font-size:17px;color:var(--steel-400);max-width:620px;margin:0 auto 40px;
  }
  .hero-ctas{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:80px;}
  .btn-primary{
    background:linear-gradient(135deg,var(--orange-400),var(--orange-600));color:#fff;
    padding:15px 30px;font-weight:600;letter-spacing:0.04em;text-transform:uppercase;font-size:13.5px;border-radius:2px;
  }
  .btn-ghost{
    border:1px solid rgba(255,255,255,0.3);color:#fff;padding:15px 30px;
    font-weight:600;letter-spacing:0.04em;text-transform:uppercase;font-size:13.5px;border-radius:2px;
  }

  /* ---------- NAMEPLATE STRIP ---------- */
  .plates{
    position:relative;z-index:1;
    display:grid;grid-template-columns:repeat(4,1fr);
    max-width:1080px;margin:0 auto;padding:0 24px 0;
    transform:translateY(40px);
  }
  .plate{
    background:linear-gradient(160deg,#2B3644,#1D2530);
    border:1px solid rgba(255,255,255,0.08);
    padding:26px 20px;position:relative;
    box-shadow:inset 0 1px 0 rgba(255,255,255,0.06), 0 12px 30px rgba(0,0,0,0.35);
  }
  .plate + .plate{border-left:none;}
  .plate::before,.plate::after{
    content:"";position:absolute;width:6px;height:6px;border-radius:50%;
    background:radial-gradient(circle at 35% 35%, #9AA4AF, #4B535C);
    top:10px;
  }
  .plate::before{left:10px;}
  .plate::after{right:10px;}
  .plate-value{font-family:var(--font-mono);font-size:26px;font-weight:600;color:var(--orange-500);letter-spacing:0.01em;}
  .plate-unit{font-family:var(--font-mono);font-size:12px;color:var(--steel-400);margin-left:4px;}
  .plate-label{
    font-family:var(--font-mono);font-size:10.5px;letter-spacing:0.08em;text-transform:uppercase;
    color:var(--steel-400);margin-top:10px;
  }

  section{padding:120px 0;}
  .section-alt{background:var(--paper-100);}
  .kicker{
    font-family:var(--font-mono);font-size:12px;letter-spacing:0.14em;text-transform:uppercase;
    color:var(--orange-600);margin-bottom:14px;display:block;
  }
  .section-head{max-width:680px;margin-bottom:56px;}
  .section-head h2{font-size:clamp(26px,3.4vw,38px);color:var(--navy-900);line-height:1.15;}
  .section-head p{color:var(--steel-600);margin-top:16px;font-size:16px;}

  /* ---------- NOSOTROS ---------- */
  .nosotros-grid{display:grid;grid-template-columns:1.1fr 0.9fr;gap:64px;align-items:start;}
  .nosotros-grid p{color:var(--ink-900);font-size:16px;margin-bottom:18px;max-width:52ch;}
  .diff-list{display:flex;flex-direction:column;gap:0;border-top:1px solid var(--navy-900);}
  .diff-item{display:flex;gap:18px;padding:20px 0;border-bottom:1px solid rgba(27,36,48,0.15);}
  .diff-num{font-family:var(--font-mono);color:var(--orange-600);font-weight:600;font-size:14px;flex-shrink:0;}
  .diff-item p{margin:0;font-size:15px;color:var(--ink-900);}

  /* ---------- SERVICIOS ---------- */
  .services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:rgba(27,36,48,0.14);}
  .service-card{
    background:var(--paper-50);padding:36px 30px;transition:background .2s;
  }
  .service-card:hover{background:#fff;}
  .service-icon{width:38px;height:38px;color:var(--orange-600);margin-bottom:20px;}
  .service-card h3{font-size:18px;color:var(--navy-900);margin-bottom:10px;letter-spacing:0.01em;}
  .service-card p{font-size:14.5px;color:var(--steel-600);}

  /* ---------- PROYECTOS ---------- */
  .projects-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
  .project-card{
    background:var(--navy-900);color:#fff;position:relative;overflow:hidden;padding:28px 24px 26px;
    border-top:3px solid var(--orange-500);
  }
  .project-loc{
    font-family:var(--font-mono);font-size:11px;letter-spacing:0.08em;text-transform:uppercase;
    color:var(--orange-500);margin-bottom:12px;display:block;
  }
  .project-card h3{font-size:17px;line-height:1.25;margin-bottom:12px;text-transform:none;font-family:var(--font-body);font-weight:600;}
  .project-card p{font-size:14px;color:var(--steel-400);}

  /* ---------- CONTACTO ---------- */
  .contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;}
  .field{margin-bottom:18px;}
  .field label{
    display:block;font-family:var(--font-mono);font-size:11px;letter-spacing:0.06em;text-transform:uppercase;
    color:var(--steel-600);margin-bottom:8px;
  }
  .field input, .field select, .field textarea{
    width:100%;border:1px solid rgba(27,36,48,0.25);background:#fff;padding:12px 14px;font-family:var(--font-body);
    font-size:14.5px;border-radius:2px;
  }
  .field textarea{resize:vertical;min-height:100px;}
  .submit-btn{
    background:var(--navy-900);color:#fff;padding:15px 32px;border:none;font-weight:600;
    letter-spacing:0.05em;text-transform:uppercase;font-size:13.5px;border-radius:2px;cursor:pointer;margin-top:8px;
  }
  .contact-info{background:var(--navy-950);color:#fff;padding:40px 34px;}
  .contact-info h3{font-size:16px;color:var(--orange-500);margin-bottom:24px;letter-spacing:0.03em;}
  .contact-row{display:flex;justify-content:space-between;padding:14px 0;border-bottom:1px solid rgba(255,255,255,0.1);font-size:14.5px;}
  .contact-row span:first-child{color:var(--steel-400);font-family:var(--font-mono);font-size:11.5px;text-transform:uppercase;letter-spacing:0.05em;}
  .map-placeholder{
    margin-top:24px;height:160px;border:1px dashed rgba(255,255,255,0.25);display:flex;align-items:center;justify-content:center;
    font-family:var(--font-mono);font-size:12px;color:var(--steel-400);text-align:center;padding:16px;
  }

  /* ---------- BLOG ---------- */
  .blog-head-row{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:48px;gap:24px;flex-wrap:wrap;}
  .blog-link{
    font-family:var(--font-mono);font-size:12.5px;letter-spacing:0.05em;text-transform:uppercase;
    color:var(--orange-600);border-bottom:1px solid var(--orange-600);padding-bottom:2px;white-space:nowrap;
  }
  .blog-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:28px;}
  .blog-card{background:#fff;border:1px solid rgba(27,36,48,0.12);display:flex;flex-direction:column;}
  .blog-thumb{
    height:150px;background:
      linear-gradient(160deg, var(--navy-900), var(--navy-950));
    position:relative;overflow:hidden;
  }
  .blog-thumb::before{
    content:"";position:absolute;inset:0;
    background-image:linear-gradient(rgba(232,121,44,0.12) 1px, transparent 1px),
      linear-gradient(90deg, rgba(232,121,44,0.12) 1px, transparent 1px);
    background-size:20px 20px;
  }
  .blog-body{padding:24px 22px 26px;flex:1;display:flex;flex-direction:column;}
  .blog-tag{
    font-family:var(--font-mono);font-size:10.5px;letter-spacing:0.08em;text-transform:uppercase;
    color:var(--orange-600);margin-bottom:10px;
  }
  .blog-body h3{
    font-family:var(--font-body);text-transform:none;font-weight:600;font-size:16.5px;
    color:var(--navy-900);line-height:1.3;margin-bottom:10px;
  }
  .blog-body p{font-size:14px;color:var(--steel-600);flex:1;}
  .blog-meta{
    font-family:var(--font-mono);font-size:11px;color:var(--steel-400);margin-top:16px;
    padding-top:14px;border-top:1px solid rgba(27,36,48,0.1);
  }

  footer{background:var(--navy-950);color:var(--steel-400);padding:40px 0;font-size:13px;}
  .footer-row{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;}

  @media (max-width: 900px){
    .navlinks{display:none;}
    .navtoggle{display:block;}
    .plates{grid-template-columns:repeat(2,1fr);}
    .plate:nth-child(2){border-left:1px solid rgba(255,255,255,0.08);}
    .plate:nth-child(3),.plate:nth-child(4){border-top:none;}
    .nosotros-grid{grid-template-columns:1fr;}
    .services-grid{grid-template-columns:repeat(2,1fr);}
    .projects-grid{grid-template-columns:1fr 1fr;}
    .blog-grid{grid-template-columns:1fr 1fr;}
    .contact-grid{grid-template-columns:1fr;}
    section{padding:80px 0;}
  }
  @media (max-width: 560px){
    .services-grid{grid-template-columns:1fr;}
    .projects-grid{grid-template-columns:1fr;}
    .blog-grid{grid-template-columns:1fr;}
    .plates{grid-template-columns:1fr;}
    .plate{border-left:1px solid rgba(255,255,255,0.08) !important;border-top:none;}
    .plate:first-child{border-top:1px solid rgba(255,255,255,0.08);}
    .hero{padding-top:100px;}
  }

/* ---------- ARTICLE PAGE ---------- */
.article-hero{
  background:var(--navy-950);color:#fff;padding:64px 0 56px;position:relative;overflow:hidden;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(232,121,44,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232,121,44,0.06) 1px, transparent 1px);
  background-size:48px 48px;
  mask-image:radial-gradient(ellipse 90% 70% at 50% 0%, black 30%, transparent 100%);
  pointer-events:none;
}
.article-hero-inner{position:relative;z-index:1;max-width:760px;margin:0 auto;padding:0 24px;}
.breadcrumb{
  font-family:var(--font-mono);font-size:12px;letter-spacing:0.05em;color:var(--steel-400);margin-bottom:24px;
}
.breadcrumb a{color:var(--steel-400);}
.breadcrumb a:hover{color:var(--orange-500);}
.article-tag{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:0.1em;text-transform:uppercase;
  color:var(--orange-500);border:1px solid rgba(232,121,44,0.4);display:inline-block;padding:5px 14px;
  border-radius:2px;margin-bottom:22px;
}
.article-hero h1{
  font-size:clamp(28px,4.2vw,42px);line-height:1.15;font-weight:600;margin-bottom:20px;
  text-transform:none;font-family:var(--font-display);
}
.article-meta-row{
  font-family:var(--font-mono);font-size:12.5px;color:var(--steel-400);display:flex;gap:20px;flex-wrap:wrap;
}

.article-body{padding:64px 0 40px;}
.article-body-inner{max-width:720px;margin:0 auto;padding:0 24px;}
.article-body-inner p{font-size:16.5px;color:var(--ink-900);margin-bottom:22px;line-height:1.75;}
.article-body-inner h2{
  font-size:21px;color:var(--navy-900);text-transform:none;font-family:var(--font-body);font-weight:600;
  margin:40px 0 16px;letter-spacing:0;
}
.article-body-inner h2 .num{
  font-family:var(--font-mono);color:var(--orange-600);margin-right:10px;font-weight:600;
}

.article-nameplate{
  background:linear-gradient(160deg,#2B3644,#1D2530);color:#fff;padding:28px 26px;margin:36px 0;
  position:relative;border:1px solid rgba(255,255,255,0.08);
}
.article-nameplate::before,.article-nameplate::after{
  content:"";position:absolute;width:6px;height:6px;border-radius:50%;
  background:radial-gradient(circle at 35% 35%, #9AA4AF, #4B535C);top:10px;
}
.article-nameplate::before{left:10px;}
.article-nameplate::after{right:10px;}
.article-nameplate-label{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:0.08em;text-transform:uppercase;
  color:var(--orange-500);margin-bottom:10px;
}
.article-nameplate p{color:var(--steel-400);font-size:14.5px;margin:0;line-height:1.6;}

.article-footer-nav{
  border-top:1px solid rgba(27,36,48,0.15);padding:40px 0 80px;
}
.article-footer-nav-inner{max-width:720px;margin:0 auto;padding:0 24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px;}
.back-link{
  font-family:var(--font-mono);font-size:13px;letter-spacing:0.04em;text-transform:uppercase;
  color:var(--orange-600);border-bottom:1px solid var(--orange-600);padding-bottom:2px;
}

@media (max-width:600px){
  .article-hero{padding:48px 0 40px;}
  .article-body{padding:44px 0 24px;}
}

/* ---------- PROJECT PHOTOS ---------- */
.project-card{padding:0;}
.project-card-body{padding:24px 22px 24px;}
.project-photos{display:grid;gap:2px;height:150px;overflow:hidden;}
.project-photos img{width:100%;height:100%;object-fit:cover;display:block;}

/* ---------- LOGO IMAGE ---------- */
.logo-img{height:22px;width:auto;display:block;max-width:160px;}

/* ---------- SERVICE BLOCKS (Construcción / Ingeniería) ---------- */
.block-label{
  display:flex;align-items:baseline;gap:20px;margin-bottom:32px;flex-wrap:wrap;
  border-top:2px solid var(--navy-900);padding-top:18px;
}
.block-label-tag{
  font-family:var(--font-mono);font-size:13px;letter-spacing:0.08em;text-transform:uppercase;
  color:var(--orange-600);font-weight:600;white-space:nowrap;
}
.block-label p{font-size:14.5px;color:var(--steel-600);margin:0;max-width:56ch;}

.eng-card{
  display:flex;gap:32px;background:var(--navy-900);color:#fff;padding:40px 38px;align-items:flex-start;
  border-left:3px solid var(--orange-500);
}
.eng-card-icon{
  flex-shrink:0;width:64px;height:64px;color:var(--orange-500);
  border:1px solid rgba(245,129,31,0.35);border-radius:2px;
  display:flex;align-items:center;justify-content:center;
}
.eng-card-icon svg{width:34px !important;height:34px !important;flex-shrink:0;}
.eng-card-body h3{
  font-family:var(--font-body);text-transform:none;font-weight:600;font-size:19px;
  margin-bottom:14px;line-height:1.3;letter-spacing:0;
}
.eng-card-body p{font-size:15px;color:var(--steel-400);margin-bottom:14px;max-width:66ch;}
.eng-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.eng-tags span{
  font-family:var(--font-mono);font-size:11px;letter-spacing:0.04em;text-transform:uppercase;
  color:var(--steel-400);border:1px solid rgba(255,255,255,0.15);padding:6px 12px;border-radius:2px;
}

@media (max-width:700px){
  .eng-card{flex-direction:column;gap:20px;padding:30px 24px;}
  .eng-card-icon{width:52px;height:52px;}
  .eng-card-icon svg{width:28px;height:28px;}
}

/* ---------- CONTACT LINKS & WHATSAPP ---------- */
.contact-link{color:#fff;transition:color .2s;}
.contact-link:hover{color:var(--orange-500);}
.wa-btn{
  display:flex;align-items:center;justify-content:center;gap:10px;
  background:#25D366;color:#0F151C;font-weight:600;font-size:14.5px;
  padding:14px 20px;margin-top:22px;border-radius:2px;
  letter-spacing:0.02em;transition:background .2s;
}
.wa-btn:hover{background:#1EBE5A;}
.wa-btn svg{flex-shrink:0;}

/* ---------- ENGINEERING SPECIALTIES GRID ---------- */
.eng-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:1px;
  background:rgba(27,36,48,0.14);margin-top:1px;
}
.eng-item{background:var(--paper-50);padding:36px 30px;transition:background .2s;}
.eng-item:hover{background:#fff;}
.eng-item-icon{width:38px;height:38px;min-width:38px;flex-shrink:0;color:var(--orange-600);margin-bottom:20px;display:block;}
svg.eng-item-icon{width:38px !important;height:38px !important;}
.eng-item h4{
  font-family:var(--font-display);font-size:18px;color:var(--navy-900);
  text-transform:uppercase;letter-spacing:0.01em;margin-bottom:10px;font-weight:600;
}
.eng-item p{font-size:14.5px;color:var(--steel-600);}

@media (max-width:900px){
  .eng-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:560px){
  .eng-grid{grid-template-columns:1fr;}
}