:root{
    --ink:#16243B; --navy:#1E3050; --navy-deep:#131F2E; --navy-darkest:#0F1A2C;
    --steel:#8FA0B5; --steel-light:#C5CDD8; --slate:#54606F; --slate2:#6B7480;
    --ivory:#F4F2EC; --sand:#E8E4DA; --line:#DAD6CC; --white:#FFFFFF;
    --serif:'Cormorant Garamond',serif; --sans:'Jost',sans-serif;
  }
  *{margin:0;padding:0;box-sizing:border-box}
  html{scroll-behavior:smooth;overflow-x:hidden;width:100%}
  body{font-family:var(--sans);background:var(--ivory);color:var(--ink);overflow-x:hidden;width:100%;position:relative}
  ::selection{background:var(--navy);color:var(--ivory)}
  img{display:block}
  @keyframes heroZoom{from{transform:scale(1.08)}to{transform:scale(1.0)}}
  @keyframes heroReveal{from{transform:translateY(22px)}to{transform:translateY(0)}}
  @keyframes scrollLine{0%,100%{transform:scaleY(1);opacity:.4}50%{transform:scaleY(.5);opacity:.1}}
  .silver{background:linear-gradient(135deg,#EDF1F6 0%,#AEB9C8 45%,#8593A6 70%,#D6DCE5 100%);-webkit-background-clip:text;background-clip:text;color:transparent}

  /* NAV */
  nav{position:fixed;top:0;left:0;right:0;z-index:100;display:flex;align-items:center;justify-content:space-between;padding:24px 60px;transition:all .5s ease;background:var(--ivory);border-bottom:1px solid rgba(22,36,59,.12)}
  nav.scrolled{padding:14px 60px;box-shadow:0 2px 18px rgba(22,36,59,.13)}
  .nav-logo{font-family:var(--serif);font-size:22px;font-weight:700;color:var(--ink);letter-spacing:1px;text-decoration:none;display:flex;align-items:center;gap:12px}
  .nav-logo img{height:46px;object-fit:contain}
  .nav-links{display:flex;list-style:none;gap:40px;align-items:center}
  .nav-links a{font-family:var(--sans);font-size:11px;font-weight:700;letter-spacing:3px;text-transform:uppercase;color:var(--ink);text-decoration:none;position:relative;transition:color .3s}
  .nav-links a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:1px;background:var(--navy);transition:width .3s}
  .nav-links a:hover{color:var(--navy)}
  .nav-links a:hover::after{width:100%}
  .nav-cta{border:1px solid var(--ink);padding:9px 22px;transition:all .3s !important}
  .nav-cta::after{display:none !important}
  .nav-cta:hover{background:var(--ink);color:var(--ivory) !important}
  .nav-burger{display:none;flex-direction:column;justify-content:center;gap:5px;width:32px;height:32px;background:none;border:none;cursor:pointer;padding:0;z-index:101}
  .nav-burger span{display:block;width:100%;height:2px;background:var(--ink);transition:transform .3s ease,opacity .3s ease}
  .nav-burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-burger.open span:nth-child(2){opacity:0}
  .nav-burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .nav-mobile{display:none}

  /* HERO */
  #inicio{min-height:100vh;display:grid;grid-template-columns:50% 50%;overflow:hidden}
  .hero-left{background:var(--ink);display:flex;flex-direction:column;justify-content:center;padding:80px 72px 80px 60px;position:relative;z-index:2;overflow:hidden}
  .hero-left::before{content:'';position:absolute;top:0;right:0;width:280px;height:280px;background:radial-gradient(circle at 70% 30%,rgba(143,160,181,.14),transparent 65%);pointer-events:none}
  .hero-eyebrow{font-size:11px;font-weight:400;letter-spacing:5px;text-transform:uppercase;color:var(--steel);margin-bottom:28px;display:flex;align-items:center;gap:14px;animation:heroReveal .9s .3s ease both}
  .hero-eyebrow span{width:38px;height:1px;background:var(--steel);display:inline-block;flex-shrink:0}
  .hero-title{font-family:var(--serif);font-size:clamp(46px,5.4vw,76px);font-weight:300;line-height:1.02;color:var(--ivory);margin-bottom:26px;animation:heroReveal .9s .5s ease both}
  .hero-title em{font-style:italic;font-weight:400}
  .hero-divider{width:48px;height:2px;background:var(--steel);margin-bottom:26px;animation:heroReveal .9s .7s ease both}
  .hero-sub{font-size:15px;font-weight:300;line-height:1.85;letter-spacing:.5px;color:rgba(244,242,236,.8);max-width:380px;margin-bottom:46px;animation:heroReveal .9s .85s ease both}
  .hero-actions{display:flex;gap:22px;align-items:center;flex-wrap:wrap;animation:heroReveal .9s 1.05s ease both}
  .btn-primary{font-size:10px;font-weight:400;letter-spacing:3px;text-transform:uppercase;text-decoration:none;background:var(--ivory);color:var(--ink);padding:16px 38px;border:1px solid var(--ivory);display:inline-block;transition:all .3s}
  .btn-primary:hover{background:transparent;color:var(--ivory);border-color:var(--ivory)}
  .btn-ghost{font-size:10px;font-weight:300;letter-spacing:3px;text-transform:uppercase;text-decoration:none;color:rgba(244,242,236,.7);display:flex;align-items:center;gap:10px;transition:gap .3s,color .3s}
  .btn-ghost:hover{gap:16px;color:var(--steel-light)}
  .hero-right{position:relative;clip-path:polygon(7% 0,100% 0,100% 100%,0% 100%);overflow:hidden;background:var(--ink)}
  .hero-right img{width:100%;height:100%;object-fit:cover;object-position:center center;transform:scale(1.08);animation:heroZoom 18s ease-out forwards}
  .hero-right-overlay{position:absolute;inset:0;background:linear-gradient(115deg,rgba(22,36,59,.78) 0%,rgba(22,36,59,.25) 45%,rgba(22,36,59,.05) 100%)}
  .hero-scroll{position:absolute;left:50%;bottom:34px;transform:translateX(-50%);writing-mode:vertical-rl;font-size:9px;letter-spacing:4px;text-transform:uppercase;color:rgba(197,205,216,.6);display:flex;align-items:center;gap:12px;z-index:3}
  .hero-scroll span{width:1px;height:54px;background:linear-gradient(to bottom,rgba(197,205,216,.6),transparent);animation:scrollLine 2s 1.5s ease-in-out infinite;display:inline-block}

  /* FEATURES */
  .features{background:var(--sand);display:grid;grid-template-columns:1fr 1fr 1fr auto;border-top:1px solid rgba(22,36,59,.08)}
  .feat{display:flex;align-items:center;gap:20px;padding:34px 40px;border-right:1px solid rgba(22,36,59,.1);transition:background .3s}
  .feat:hover{background:rgba(30,48,80,.05)}
  .feat-icon{width:46px;height:46px;flex-shrink:0;display:flex;align-items:center;justify-content:center;color:var(--navy)}
  .feat-icon svg{width:32px;height:32px}
  .feat-label{font-size:12px;font-weight:600;letter-spacing:2px;text-transform:uppercase;color:var(--navy);margin-bottom:3px}
  .feat-desc{font-size:12px;font-weight:300;letter-spacing:.5px;text-transform:uppercase;color:var(--slate)}
  .feat-cta{padding:34px 48px 34px 38px;display:flex;flex-direction:column;justify-content:center;background:var(--ink)}
  .feat-cta-script{font-family:var(--serif);font-size:24px;font-weight:300;font-style:italic;color:rgba(197,205,216,.8);line-height:1.2;margin-bottom:2px}
  .feat-cta-bold{font-size:13px;font-weight:600;letter-spacing:2px;text-transform:uppercase;color:var(--ivory)}

  /* STATS */

  /* SECTION HELPERS */
  .eyebrow{font-size:10px;font-weight:500;letter-spacing:4px;text-transform:uppercase;color:var(--slate2);margin-bottom:16px;display:flex;align-items:center;gap:16px}
  .eyebrow span{width:30px;height:1px;background:var(--steel);display:inline-block}
  .eyebrow.on-dark{color:var(--steel)}
  .stitle{font-family:var(--serif);font-size:clamp(36px,4vw,56px);font-weight:300;line-height:1.15;color:var(--ink)}
  .stitle em{font-style:italic;color:var(--navy)}

  /* NOSOTROS */
  #nosotros{background:var(--white);display:grid;grid-template-columns:1fr 1fr;overflow:hidden}
  .nos-img{position:relative;min-height:600px;overflow:hidden}
  .nos-img img{width:100%;height:100%;object-fit:cover;transition:transform .8s ease}
  .nos-img:hover img{transform:scale(1.04)}
  .nos-img-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(22,36,59,.22) 0%,transparent 55%)}
  .nos-text{padding:100px 80px;display:flex;flex-direction:column;justify-content:center}
  .nos-body{font-size:15px;font-weight:300;line-height:1.9;color:var(--slate);max-width:520px;margin-top:24px}
  .pillars{margin-top:48px;display:grid;grid-template-columns:1fr 1fr;gap:22px}
  .pillar{padding:24px;border:1px solid var(--line);position:relative;overflow:hidden;transition:border-color .3s}
  .pillar::before{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--navy);transition:width .4s}
  .pillar:hover{border-color:var(--navy)}
  .pillar:hover::before{width:100%}
  .pillar-num{font-family:var(--serif);font-size:20px;color:var(--steel);margin-bottom:10px;font-weight:500}
  .pillar-title{font-family:var(--serif);font-size:18px;font-weight:400;color:var(--ink);margin-bottom:6px}
  .pillar-text{font-size:13px;font-weight:300;line-height:1.7;color:var(--slate)}

  /* PROYECTOS */
  #proyectos{background:var(--ivory);padding:120px 60px}
  .proy-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:56px}
  .proy-head .proy-privacy{font-size:11px;font-weight:200;color:var(--slate2);letter-spacing:.5px;max-width:280px;text-align:right;line-height:1.6}
  .gal-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:440px 300px;gap:4px}
  .gal-item{position:relative;overflow:hidden;cursor:pointer;background:var(--sand)}
  .gal-item.feat{grid-column:span 2}
  .gal-img{width:100%;height:100%;object-fit:cover;transition:transform .8s cubic-bezier(.25,.46,.45,.94)}
  .gal-item:hover .gal-img{transform:scale(1.07)}
  .gal-overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(15,26,44,.88) 0%,rgba(15,26,44,.15) 55%,transparent 100%);opacity:.6;transition:opacity .4s}
  .gal-item:hover .gal-overlay{opacity:1}
  .gal-info{position:absolute;bottom:0;left:0;right:0;padding:28px 32px;transform:translateY(8px);transition:transform .4s cubic-bezier(.25,.46,.45,.94)}
  .gal-item:hover .gal-info{transform:translateY(0)}
  .gal-cat{font-size:10px;font-weight:400;letter-spacing:3px;text-transform:uppercase;color:var(--steel-light);margin-bottom:6px}
  .gal-title{font-family:var(--serif);font-size:clamp(18px,2vw,24px);font-weight:300;color:var(--ivory);line-height:1.2}
  .gal-cta{display:inline-flex;align-items:center;gap:8px;margin-top:12px;font-size:11px;letter-spacing:2px;text-transform:uppercase;color:var(--steel-light);text-decoration:none;opacity:0;transition:opacity .3s .1s,gap .3s}
  .gal-item:hover .gal-cta{opacity:1}
  .gal-cta:hover{gap:13px}

  #servicios{background:var(--navy-darkest);padding:120px 60px;position:relative;overflow:hidden}
  #servicios .stitle{color:var(--ivory)}
  .bod-pattern{position:absolute;inset:0;opacity:.04;background-image:repeating-linear-gradient(0deg,transparent,transparent 60px,rgba(143,160,181,.5) 60px,rgba(143,160,181,.5) 61px),repeating-linear-gradient(90deg,transparent,transparent 60px,rgba(143,160,181,.5) 60px,rgba(143,160,181,.5) 61px)}
  .serv-cols{display:grid;grid-template-columns:1fr 1fr;gap:20px;position:relative}
  .serv-col{background:rgba(255,255,255,.03);border:1px solid rgba(143,160,181,.14);padding:32px 28px}
  .serv-col h4{font-size:10px;letter-spacing:2.5px;text-transform:uppercase;color:var(--steel-light);margin-bottom:20px}
  @media(max-width:900px){.serv-cols{grid-template-columns:1fr}}
  .bod-body{font-size:15px;font-weight:300;line-height:1.9;color:rgba(244,242,236,.78);max-width:520px;margin-top:24px}

  /* TESTIMONIOS */
  #testimonios{background:var(--sand);padding:120px 60px;text-align:center}
  .eyebrow.center{justify-content:center}
  .test-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2px;margin-top:64px}
  .test{background:var(--white);padding:48px 40px;text-align:left;position:relative}
  .test-quote{font-family:var(--serif);font-size:80px;line-height:.7;color:var(--navy);opacity:.18;margin-bottom:20px;display:block}
  .test-text{font-family:var(--serif);font-size:18px;font-weight:300;font-style:italic;line-height:1.7;color:var(--ink);margin-bottom:32px}
  .test-author{display:flex;align-items:center;gap:16px;padding-top:24px;border-top:1px solid var(--line)}
  .test-avatar{width:44px;height:44px;border-radius:50%;background:var(--ink);display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-size:18px;color:var(--steel-light);font-style:italic}
  .test-name{font-family:var(--serif);font-size:16px;color:var(--ink);font-weight:400}
  .test-desc{font-size:11px;font-weight:200;color:var(--slate);letter-spacing:1px}

  /* CONTACTO */
  #contacto{background:var(--white);display:grid;grid-template-columns:1fr 1fr;min-height:700px}
  .cinfo{background:var(--ink);padding:100px 80px;display:flex;flex-direction:column;justify-content:space-between}
  .cinfo .stitle{color:var(--ivory)}
  .cinfo-body{font-size:15px;font-weight:300;line-height:1.9;color:rgba(244,242,236,.78);max-width:520px;margin:24px 0 48px}
  .cdetails{display:flex;flex-direction:column;gap:32px}
  .citem{display:flex;gap:20px;align-items:flex-start}
  .cicon{width:40px;height:40px;border:1px solid rgba(143,160,181,.35);display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0}
  .citem h4{font-size:10px;letter-spacing:3px;text-transform:uppercase;color:var(--steel);margin-bottom:4px}
  .citem p{font-size:15px;font-weight:300;color:rgba(244,242,236,.9);line-height:1.6}
  .cform{padding:100px 80px;display:flex;flex-direction:column;justify-content:center}
  .form-title{font-family:var(--serif);font-size:28px;font-weight:300;color:var(--ink);margin-bottom:40px}
  .form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}
  .form-group{margin-bottom:24px}
  .form-group label{display:block;font-size:10px;letter-spacing:2.5px;text-transform:uppercase;color:var(--slate);margin-bottom:8px;font-weight:500}
  .form-group input,.form-group select,.form-group textarea{width:100%;background:transparent;border:none;border-bottom:1px solid var(--line);padding:12px 0;font-family:var(--sans);font-size:15px;font-weight:300;color:var(--ink);outline:none;transition:border-color .3s;appearance:none}
  .form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-bottom-color:var(--navy)}
  .form-group textarea{resize:none;height:80px}
  .form-submit{width:100%;background:var(--navy);color:var(--ivory);border:none;padding:18px;font-family:var(--sans);font-size:10px;letter-spacing:3px;text-transform:uppercase;cursor:pointer;transition:background .3s;margin-top:8px}
  .form-submit:hover{background:var(--ink)}
  .form-submit:disabled{opacity:.6;cursor:default}

  /* FOOTER */
  footer{background:var(--navy-darkest);padding:60px;display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:60px;border-top:1px solid rgba(143,160,181,.12)}
  .foot-logo{font-family:var(--serif);font-size:22px;font-weight:600;color:var(--ivory);letter-spacing:1px;text-decoration:none;display:inline-flex;align-items:center;gap:12px;margin-bottom:20px}
  .foot-logo img{height:46px;object-fit:contain}
  .foot-tagline{font-family:var(--serif);font-size:15px;font-style:italic;font-weight:300;color:rgba(197,205,216,.62);line-height:1.7;margin-bottom:24px}
  .foot-social{display:flex;gap:12px}
  .foot-social a{width:36px;height:36px;border:1px solid rgba(143,160,181,.22);display:flex;align-items:center;justify-content:center;font-size:12px;color:rgba(197,205,216,.5);text-decoration:none;transition:all .3s}
  .foot-social a:hover{border-color:var(--steel);color:var(--steel-light)}
  .foot-col h5{font-size:11px;letter-spacing:3px;text-transform:uppercase;color:var(--steel);margin-bottom:24px;font-weight:500}
  .foot-col ul{list-style:none}
  .foot-col ul li{margin-bottom:12px}
  .foot-col ul li a{font-size:13px;font-weight:300;color:rgba(197,205,216,.72);text-decoration:none;letter-spacing:.5px;transition:color .3s}
  .foot-col ul li a:hover{color:var(--steel-light)}
  .foot-bottom{background:var(--navy-darkest);padding:20px 60px;border-top:1px solid rgba(143,160,181,.1);display:flex;justify-content:space-between;align-items:center}
  .foot-bottom p{font-size:11px;font-weight:300;letter-spacing:1px;color:rgba(197,205,216,.55)}

  /* PÁGINAS DE CONTENIDO */
  .page-hero{background:var(--navy-darkest);padding:170px 60px 90px}
  .page-hero .eyebrow{color:var(--steel)}
  .page-hero h1{font-family:var(--serif);font-size:clamp(34px,4vw,54px);font-weight:300;line-height:1.15;color:var(--ivory);margin:18px 0 20px;max-width:820px}
  .page-hero .lead{font-size:16px;font-weight:300;line-height:1.85;color:rgba(244,242,236,.75);max-width:680px}

  .article{padding:100px 60px}
  .article-inner{max-width:760px;margin:0 auto}
  .article h2{font-family:var(--serif);font-size:clamp(24px,2.4vw,32px);font-weight:400;color:var(--ink);margin:60px 0 18px}
  .article-inner>*:first-child{margin-top:0}
  .article p{font-size:16px;font-weight:300;line-height:1.9;color:var(--slate2);margin-bottom:18px}
  .article ul{margin:0 0 22px 22px}
  .article li{font-size:16px;font-weight:300;line-height:1.85;color:var(--slate2);margin-bottom:8px}
  .article strong{font-weight:500;color:var(--ink)}

  .steps{display:flex;flex-direction:column;margin:32px 0 8px}
  .step{display:flex;gap:24px;padding:24px 0;border-bottom:1px solid var(--line)}
  .step:last-child{border-bottom:none}
  .step-num{font-family:var(--serif);font-size:32px;font-weight:300;color:var(--steel);min-width:48px;line-height:1}
  .step-body h3{font-family:var(--serif);font-size:19px;font-weight:400;color:var(--ink);margin-bottom:6px}
  .step-body p{margin-bottom:0}

  .compare-table{width:100%;border-collapse:collapse;margin:28px 0 8px;font-size:14px}
  .compare-table th,.compare-table td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line);font-weight:300;color:var(--slate2)}
  .compare-table th{font-family:var(--sans);font-size:11px;letter-spacing:1.5px;text-transform:uppercase;color:var(--ink);font-weight:600;border-bottom:2px solid var(--ink)}
  .compare-table td:first-child,.compare-table th:first-child{font-weight:500;color:var(--ink)}

  .faq{margin-top:24px}
  .faq-item{border-bottom:1px solid var(--line);padding:6px 0}
  .faq-item summary{font-family:var(--serif);font-size:18px;font-weight:400;color:var(--ink);cursor:pointer;padding:18px 32px 18px 0;position:relative;list-style:none}
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary::after{content:'+';position:absolute;right:0;top:16px;font-size:22px;font-weight:300;color:var(--steel);transition:transform .3s}
  .faq-item[open] summary::after{transform:rotate(45deg)}
  .faq-item p{padding-bottom:20px;max-width:680px}

  .article-cta{display:flex;flex-wrap:wrap;gap:16px;margin-top:16px}
  .btn-dark{font-size:10px;font-weight:400;letter-spacing:3px;text-transform:uppercase;text-decoration:none;background:var(--navy);color:var(--ivory);padding:16px 34px;border:1px solid var(--navy);display:inline-block;transition:all .3s}
  .btn-dark:hover{background:transparent;color:var(--navy)}
  .btn-outline{font-size:10px;font-weight:400;letter-spacing:3px;text-transform:uppercase;text-decoration:none;color:var(--ink);border:1px solid var(--line);padding:16px 34px;display:inline-block;transition:all .3s}
  .btn-outline:hover{border-color:var(--navy);color:var(--navy)}

  /* GALERÍA DE PROYECTOS */
  .proy-gallery{padding:100px 60px}
  .proy-gallery-inner{max-width:1080px;margin:0 auto}
  .project-desc{font-size:15px;font-weight:300;line-height:1.8;color:var(--slate2)}
  .proy-intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 64px;margin-bottom:8px}
  .proy-intro-grid .project-desc{margin-bottom:24px}
  .portfolio-stats{display:grid;grid-template-columns:repeat(3,1fr);margin:40px 0 8px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .portfolio-stat{text-align:center;padding:28px 20px;border-right:1px solid var(--line)}
  .portfolio-stat:last-child{border-right:none}
  .portfolio-stat-num{font-family:var(--serif);font-size:38px;font-weight:300;color:var(--ink)}
  .portfolio-stat-label{font-size:10px;letter-spacing:2px;text-transform:uppercase;color:var(--slate);margin-top:6px}
  .proy-section-title{font-family:var(--serif);font-size:clamp(24px,2.6vw,34px);font-weight:400;color:var(--ink);margin:64px 0 8px}
  .projects-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px 32px;margin-top:24px}
  .project-card{border-bottom:1px solid var(--line);padding-bottom:32px}
  .project-cover{position:relative;margin-bottom:16px;cursor:pointer;overflow:hidden}
  .project-cover img{width:100%;height:320px;object-fit:cover;display:block;background:var(--sand);transition:transform .5s ease}
  .project-cover:hover img{transform:scale(1.04)}
  .project-cover .project-count{position:absolute;bottom:12px;right:12px;background:rgba(22,36,59,.78);color:var(--ivory);font-size:11px;letter-spacing:.5px;padding:5px 10px;pointer-events:none}
  .cover-arrow{position:absolute;top:0;bottom:0;width:44px;display:flex;align-items:center;justify-content:center;background:none;border:none;color:var(--ivory);font-size:26px;cursor:pointer;opacity:0;transition:opacity .25s,background .2s;z-index:2}
  .cover-arrow:hover{background:rgba(22,36,59,.28)}
  .project-cover:hover .cover-arrow{opacity:.85}
  .cover-arrow.prev{left:0}
  .cover-arrow.next{right:0}
  .project-title{font-family:var(--serif);font-size:19px;font-weight:400;color:var(--ink);margin-bottom:4px}
  .project-tag{font-size:12px;font-weight:300;color:var(--slate);letter-spacing:.3px}

  /* LIGHTBOX */
  .lightbox{position:fixed;inset:0;background:rgba(15,26,44,.94);z-index:200;display:none;align-items:center;justify-content:center}
  .lightbox.open{display:flex}
  .lightbox img{width:88vw;height:82vh;object-fit:contain}
  .lightbox-close,.lightbox-prev,.lightbox-next{position:absolute;background:none;border:none;color:var(--ivory);cursor:pointer;font-family:var(--sans);opacity:.8;transition:opacity .2s}
  .lightbox-close:hover,.lightbox-prev:hover,.lightbox-next:hover{opacity:1}
  .lightbox-close{top:24px;right:32px;font-size:28px;line-height:1}
  .lightbox-prev,.lightbox-next{top:50%;transform:translateY(-50%);font-size:36px;padding:8px 14px}
  .lightbox-prev{left:12px}
  .lightbox-next{right:12px}
  .lightbox-counter{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);color:var(--steel-light);font-size:12px;letter-spacing:1px}

  @media(max-width:900px){
    nav{padding:18px 24px}
    nav.scrolled{padding:14px 24px}
    .nav-links{display:none}
    .nav-burger{display:flex}
    .nav-mobile{display:block;position:fixed;top:0;right:0;height:100vh;width:min(78vw,320px);background:var(--ivory);z-index:99;box-shadow:-8px 0 30px rgba(22,36,59,.18);transform:translateX(100%);transition:transform .35s ease;padding:100px 32px 40px;overflow-y:auto}
    .nav-mobile.open{transform:translateX(0)}
    .nav-mobile ul{list-style:none;display:flex;flex-direction:column;gap:26px}
    .nav-mobile a{font-family:var(--sans);font-size:13px;font-weight:600;letter-spacing:2px;text-transform:uppercase;color:var(--ink);text-decoration:none}
    .nav-mobile a.nav-cta{border:1px solid var(--ink);padding:12px 20px;text-align:center;display:block}
    .nav-overlay{display:none;position:fixed;inset:0;background:rgba(15,26,44,.45);z-index:98}
    .nav-overlay.open{display:block}
    #inicio{grid-template-columns:1fr;min-height:100vh}
    .hero-left{padding:120px 28px 60px}
    .hero-right{display:none}
    .hero-scroll{display:none}
    .features{grid-template-columns:1fr}
    .feat{border-right:none;border-bottom:1px solid rgba(22,36,59,.1);padding:24px 28px}
    .feat-cta{padding:28px}
    #nosotros{grid-template-columns:1fr}
    .nos-img{min-height:360px}
    .nos-text{padding:60px 24px}
    .pillars{grid-template-columns:1fr}
    #proyectos,#testimonios{padding:80px 24px}
    .proy-head{flex-direction:column;gap:20px;align-items:flex-start}
    .proy-head .proy-privacy{text-align:left;max-width:100%}
    .gal-grid{grid-template-columns:1fr;grid-template-rows:none}
    .gal-item{min-height:280px}
    .gal-item.feat{grid-column:span 1;min-height:360px}
    .gal-overlay{opacity:1}
    .gal-info{transform:translateY(0)}
    .bod-head{grid-template-columns:1fr;gap:40px}
    .test-grid{grid-template-columns:1fr}
    #contacto{grid-template-columns:1fr}
    .cinfo{padding:60px 24px}
    .cform{padding:60px 24px}
    .form-row{grid-template-columns:1fr}
    .page-hero{padding:130px 24px 70px}
    .article{padding:60px 24px}
    .proy-gallery{padding:60px 24px}
    .proy-intro-grid{grid-template-columns:1fr}
    .projects-grid{grid-template-columns:1fr}
    .project-cover img{height:240px}
    .lightbox-prev,.lightbox-next{font-size:28px;padding:6px 10px}
    .portfolio-stats{grid-template-columns:1fr}
    .portfolio-stat{border-right:none;border-bottom:1px solid var(--line);padding:20px 0}
    .portfolio-stat:last-child{border-bottom:none}
    .step{flex-direction:column;gap:8px}
    .compare-table{font-size:13px}
    .compare-table th,.compare-table td{padding:10px 8px}
    footer{grid-template-columns:1fr;padding:60px 24px;gap:40px}
    .foot-bottom{flex-direction:column;gap:8px;padding:20px 24px;text-align:center}
  }