:root{--pc-verde: #25d366}.container{max-width:900px;margin:0 auto;padding:15px}.header{text-align:center;padding:40px 20px;background:var(--pc-rosa-pastell);border:4px solid var(--pc-negro);border-radius:20px;margin-bottom:30px;box-shadow:8px 8px 0 var(--pc-negro);position:relative;overflow:hidden}.header h1{font-size:2.8rem;color:var(--pc-rosa-fuerte);margin-bottom:10px;line-height:1.1}.author-badge{display:inline-block;background:var(--pc-negro);color:var(--pc-blanco);padding:5px 15px;border-radius:50px;font-weight:900;font-size:.9rem;margin-bottom:15px;letter-spacing:1px;text-transform:uppercase}.tabs-wrapper{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:30px}.tab-btn{background:var(--pc-blanco);border:3px solid var(--pc-negro);padding:12px 20px;border-radius:50px;font-weight:800;cursor:pointer;font-family:Nunito,sans-serif;font-size:1rem;color:var(--pc-negro);box-shadow:0 4px 0 var(--pc-negro);transition:.2s;white-space:normal;word-wrap:break-word}.tab-btn:hover{background:var(--pc-amarillo);transform:translateY(-2px);box-shadow:0 6px 0 var(--pc-negro)}.tab-btn.active{background:var(--pc-rosa-fuerte);color:#fff;box-shadow:0 0 0 var(--pc-negro);transform:translateY(4px)}.tab-content{display:none;animation:fadeInTab .4s ease-out}@keyframes fadeInTab{0%{opacity:0;transform:translateY(15px)}to{opacity:1;transform:translateY(0)}}.content-box{background:#fff;border:3px solid var(--pc-negro);border-radius:20px;padding:30px;margin-bottom:30px;box-shadow:6px 6px 0 var(--pc-azul-suave)}.content-box h2{color:var(--pc-rosa-fuerte);margin-bottom:15px;font-size:1.8rem}.content-box p{margin-bottom:15px;font-size:1.05rem;color:#444;font-weight:600}.content-box ul{margin-left:20px;margin-bottom:15px;font-weight:600;color:#444;font-size:1.05rem}.info-panel{padding:20px;border-radius:15px;border:3px dashed var(--pc-negro);margin-bottom:20px}.info-panel h4{font-size:1.3rem;color:var(--pc-negro);margin-bottom:10px;font-family:Handlee,cursive}.grid-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px;margin-top:20px}.card{background:var(--pc-blanco);border:3px solid var(--pc-negro);border-radius:15px;padding:20px;box-shadow:4px 4px 0 var(--pc-gris-suave);transition:transform .2s}.card:hover{transform:translateY(-5px);box-shadow:6px 6px 0 var(--pc-negro)}.card h4{font-size:1.3rem;margin-bottom:10px;color:var(--pc-rosa-fuerte);font-family:Handlee,cursive}.flip-card{background-color:transparent;width:100%;height:200px;perspective:1000px;margin-bottom:20px}.flip-card-inner{position:relative;width:100%;height:100%;text-align:center;transition:transform .6s;transform-style:preserve-3d;cursor:pointer}.flip-card.flipped .flip-card-inner{transform:rotateY(180deg)}.flip-card-front,.flip-card-back{position:absolute;width:100%;height:100%;-webkit-backface-visibility:hidden;backface-visibility:hidden;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:20px;border:3px solid var(--pc-negro);border-radius:15px;font-weight:800;font-size:1rem}.flip-card-front{background-color:var(--pc-amarillo);color:var(--pc-negro);box-shadow:6px 6px 0 var(--pc-rosa-pastell)}.flip-card-back{background-color:var(--pc-verde);color:#fff;transform:rotateY(180deg);box-shadow:-6px 6px 0 var(--pc-negro)}.btn-next{display:block;width:100%;max-width:400px;margin:30px auto 0;text-align:center;background:var(--pc-rosa-fuerte);color:#fff;border:3px solid var(--pc-negro);padding:15px 25px;border-radius:50px;font-weight:900;font-size:1.2rem;cursor:pointer;transition:all .3s;box-shadow:0 6px 0 var(--pc-negro);font-family:Nunito,sans-serif;text-decoration:none}.btn-next:hover{transform:scale(1.03) translateY(-3px);box-shadow:0 9px 0 var(--pc-negro)}.btn-next:active{transform:translateY(6px);box-shadow:0 0 0 var(--pc-negro)}.step-item{display:flex;gap:15px;margin-bottom:20px;align-items:flex-start}.step-number{background:var(--pc-rosa-fuerte);color:#fff;width:35px;height:35px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:900;flex-shrink:0;font-family:Handlee,cursive;font-size:1.2rem;border:2px solid var(--pc-negro);box-shadow:2px 2px 0 var(--pc-negro)}