:root{--primary-blue: #0056b3;--tech-blue: #007bff;--light-blue: #e3f2fd;--dark-bg: #f5f7fa;--text-dark: #333;--text-gray: #666;--white: #ffffff;--gradient-blue: linear-gradient(135deg, #0056b3 0%, #007bff 100%)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background-color:var(--dark-bg);color:var(--text-dark);line-height:1.6}a{text-decoration:none;color:inherit}ul{list-style:none}.container{max-width:1200px;margin:0 auto;padding:0 20px}.card{background:var(--white);border-radius:12px;box-shadow:0 4px 20px #0000000d;padding:24px;transition:transform .2s ease}.card:hover{transform:translateY(-5px);box-shadow:0 8px 30px #0000001a}.btn-primary{background:var(--gradient-blue);color:#fff;padding:10px 24px;border-radius:6px;border:none;cursor:pointer;font-weight:500;transition:opacity .2s}.btn-primary:hover{opacity:.9}.section-title{text-align:center;margin-bottom:40px;color:var(--primary-blue);font-size:2rem;font-weight:700}