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(width<=768px){.navbar{flex-direction:column;gap:1rem}.nav-links{flex-wrap:wrap;justify-content:center;gap:1rem}.hero-name{font-size:2rem}.hero-title{font-size:1.2rem}.hero-contact{flex-direction:column;gap:.5rem}.contact-divider{display:none}.section{padding:3rem 1rem}.section-title{font-size:1.5rem}.skills-grid,.certifications-list{grid-template-columns:1fr}}