:root{--robotiax-red:#800000;--ia-accent:#ff3333;--card-light:#f5f5f5;--text-white:#ffffff;--text-black:#000000}*{margin:0;padding:0;box-sizing:border-box}body{background-color:var(--robotiax-red);color:var(--text-white);font-family:Inter,sans-serif;line-height:1.6;overflow-x:hidden}.main-container{max-width:1100px;margin:0 auto;padding:60px 20px}.back-link{position:fixed;top:15px;left:15px;color:var(--text-white);text-decoration:none;font-family:Orbitron;font-size:.6rem;z-index:2000;background:rgba(0,0,0,.5);padding:8px 15px;border:1px solid var(--text-white);text-transform:uppercase;letter-spacing:1px}.back-link:hover{background:var(--text-white);color:var(--text-black)}.btn-arsenal-link{display:inline-block;padding:20px 40px;background:var(--text-white);color:var(--robotiax-red);font-family:Orbitron;font-weight:900;text-decoration:none;border-radius:4px;margin-top:20px;font-size:1.1rem;text-transform:uppercase;box-shadow:0 0 20px rgba(255,255,255,.3);animation:pulseButton 2s infinite;transition:.3s}.btn-arsenal-link:hover{transform:scale(1.05);box-shadow:0 0 40px rgba(255,255,255,.6);background:#fff;color:red}@keyframes pulseButton{0%{transform:scale(1);box-shadow:0 0 10px rgba(255,255,255,.3)}50%{transform:scale(1.03);box-shadow:0 0 30px rgba(255,255,255,.6)}100%{transform:scale(1);box-shadow:0 0 10px rgba(255,255,255,.3)}}.arsenal-subtitle{display:block;font-family:Rajdhani;font-size:1.4rem;color:#fff;margin-bottom:10px;font-weight:700;letter-spacing:2px}header{text-align:center;margin-bottom:50px;padding-top:20px}h1{font-family:Orbitron,sans-serif;font-size:clamp(2rem, 8vw, 3rem);font-weight:900;letter-spacing:2px;color:var(--text-white);text-transform:uppercase}.sub-header{color:#f99;font-family:Orbitron;font-size:.8rem;font-weight:700;letter-spacing:4px}.modules-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:25px}.black-module{background:var(--card-light);border:none;padding:35px;border-radius:4px;display:flex;flex-direction:column;box-shadow:0 15px 35px rgba(0,0,0,.3)}.module-title{font-family:Orbitron,sans-serif;font-size:1.1rem;color:var(--robotiax-red);margin-bottom:15px;font-weight:800}.module-desc{color:var(--text-black);font-size:.95rem;font-weight:500;margin-bottom:25px;min-height:4em}.module-price{font-family:Inter,sans-serif;font-weight:900;font-size:2rem;color:var(--text-black);margin-bottom:25px}.btn-module-purchase{background:#fff;color:var(--robotiax-red);border:2px solid var(--robotiax-red);padding:15px;font-family:Orbitron,sans-serif;font-size:.8rem;font-weight:900;cursor:pointer;text-transform:uppercase;transition:.3s;text-align:center}.btn-module-purchase:hover{background:var(--robotiax-red);color:#fff}.promo-container{margin-top:80px;background:var(--card-light);border:4px solid var(--text-white);padding:50px 30px;text-align:center;box-shadow:0 20px 50px rgba(0,0,0,.5);border-radius:8px}.promo-title{font-family:Orbitron;color:var(--robotiax-red);font-size:2rem;margin-bottom:15px}.promo-desc{color:var(--text-black);max-width:700px;margin:0 auto 25px;font-weight:600}.promo-price{font-family:Orbitron;font-size:3rem;color:var(--text-black);margin-bottom:30px;display:block}