.project-card{transition:box-shadow .3s,transform .3s;box-shadow:0 2px 8px rgba(0,0,0,.08);cursor:pointer}.project-card:hover{box-shadow:0 12px 32px rgba(0,86,179,.18),0 2px 8px rgba(0,0,0,.1);transform:translateY(-10px) scale(1.05);z-index:2}.project-card:hover .project-img-hover{transform:scale(1.09);filter:brightness(1.08) saturate(1.1)}.whatsapp-float{position:fixed;width:60px;height:60px;bottom:30px;right:30px;z-index:100;display:flex;align-items:center;justify-content:center;background:#25d366;border-radius:50%;box-shadow:0 2px 8px rgba(0,0,0,.2);transition:background .3s}.whatsapp-float:hover{background:#1ebe57}.project-img-hover{width:100%;height:180px;object-fit:cover;aspect-ratio:4/3;background:#f8f9fa;transition:transform .3s}:root{--dsi-blue:#0056b3;--dsi-dark-blue:#004488;--dsi-gray:#6c757d;--dsi-light-gray:#f8f9fa;--dsi-black:#212529;--dsi-white:#fff}body{font-family:Montserrat,sans-serif;color:var(--dsi-black)}.navbar-dark .navbar-nav .nav-link{color:var(--dsi-white)}.hero-section{background:linear-gradient(rgba(0,0,0,.7),rgba(0,0,0,.7)),image-set(url('images/nuevo-logo-dsi-2025.png') type('image/png'));background-size:cover;background-position:center;background-repeat:no-repeat;height:100vh;position:relative;background-attachment:fixed;background-blend-mode:multiply}.webp-supported .hero-section{background-image:linear-gradient(rgba(0,0,0,.7),rgba(0,0,0,.7)),url('images/nuevo-logo-dsi-2025.webp')}.hero-section h1,.hero-section p{text-shadow:2px 2px 4px rgba(0,0,0,.5)}.btn-primary{background-color:var(--dsi-blue);border-color:var(--dsi-blue);transition:background-color .3s ease,transform .3s ease}.btn-primary:hover{background-color:var(--dsi-dark-blue);border-color:var(--dsi-dark-blue);transform:scale(1.05)}section{padding:6rem 0}#proyectos{background-color:var(--dsi-light-gray)}.service-card{border:none;transition:transform .3s ease,box-shadow .3s ease;cursor:pointer}.service-card:hover{transform:translateY(-10px);box-shadow:0 10px 20px rgba(0,0,0,.1)}.service-icon{font-size:3rem;color:var(--dsi-blue);margin-bottom:1rem}.testimonial-card{background-color:#fff;border-left:5px solid var(--dsi-blue);border-radius:5px;box-shadow:0 4px 8px rgba(0,0,0,.1);color:#222;font-size:1rem;line-height:1.4;padding:1.2rem 1rem;max-width:340px;margin-left:auto;margin-right:auto}.testimonial-card .fst-italic{color:#222;font-size:1.1em;font-style:italic}.testimonial-card cite{color:#0056b3;font-size:1em;font-style:normal}.google-form-container{box-shadow:0 4px 15px rgba(0,0,0,.1);border-radius:8px;overflow:hidden}.social-icons a{transition:color .3s ease}.social-icons a:hover{color:var(--dsi-blue)!important}.animated-element{opacity:0;transform:translateY(20px);transition:opacity 1s ease-out,transform 1s ease-out}.fade-in-up.is-visible{opacity:1;transform:translateY(0)}