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.step-number{color:var(--a2);margin-bottom:15px;font-size:2.2rem;font-weight:700}.virus-pc-root .step-title{color:var(--ts);text-shadow:0 1px 3px #0000004d;margin-bottom:12px;font-size:1.3rem;font-weight:700}.virus-pc-root .step-content{color:var(--ts);font-size:.95rem;line-height:1.6}.virus-pc-root .interactive-card-container{perspective:1000px;margin:30px 0}.virus-pc-root .interactive-card{width:100%;height:220px;transform-style:preserve-3d;border-radius:var(--rd);cursor:pointer;transition:transform .7s cubic-bezier(.175,.885,.32,1.275);position:relative}.virus-pc-root .interactive-card.flipped{transform:rotateY(180deg)}.virus-pc-root .card-face{backface-visibility:hidden;border-radius:var(--rd);width:100%;height:100%;box-shadow:var(--sd);flex-direction:column;justify-content:center;align-items:center;padding:20px;display:flex;position:absolute;overflow:hidden}.virus-pc-root .card-front{background:linear-gradient(135deg,var(--s),var(--p));border:2px solid #0000;animation:2s infinite 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