:root{--primary:#4361ee;--secondary:#3a0ca3;--accent:#f72585;--light:#f8f9fa;--dark:#212529;--gray:#6c757d}*{box-sizing:border-box;margin:0;padding:0}body{color:var(--dark);font-family:Helvetica Neue,Arial,Hiragino Kaku Gothic ProN,Hiragino Sans,Meiryo,sans-serif;line-height:1.6}a{color:var(--primary);text-decoration:none;transition:all .3s}a:hover{color:var(--secondary)}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}h1,h2,h3,h4{font-weight:700;line-height:1.3}.section-header{text-align:center;margin-bottom:60px}.section-header h2{margin-bottom:15px;font-size:2.5rem}.section-header p{color:var(--gray);max-width:700px;margin:0 auto}@media (max-width:768px){.section-header h2{font-size:2rem}}