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(max-width:900px){.education-grid{grid-template-columns:1fr;gap:20px}}:root{--primary-color:#000;--secondary-color:#f4f4f4;--accent-color:#007bff;--font-family:"Poppins",sans-serif;--max-width:1600px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);color:var(--primary-color);background-color:var(--secondary-color);line-height:1.6}a{color:var(--accent-color);text-decoration:none;transition:color .3s}.btn-primary{background-color:var(--primary-color);color:#fff;border:2px solid var(--primary-color);cursor:pointer;border-radius:5px;padding:10px 20px;transition:all .3s}.btn-primary:hover{background-color:var(--primary-color);border-color:var(--accent-color);transform:translateY(-3px);box-shadow:0 6px 15px #0003}body.dark-mode 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