.section-header{text-align:center;margin-bottom:40px}.section-title{font-size:36px;font-weight:900;color:#0b1733;margin-bottom:8px}.section-subtitle{font-size:16px;color:#4a5568;max-width:640px;margin:0 auto;line-height:1.6}@media (max-width:768px){.section-title{font-size:26px}}