.pollution-section{padding:2rem;transition:background-color .3s ease}.white-bg{background-color:#ffffff}.green-bg{background-color:#F0F4EF;color:#333}.section-header{text-align:center;margin-bottom:1.5rem}.section-header h2{margin:100px 0 40px}.section-header h2,.section-header p{font-family:Poppins,sans-serif;font-size:36px;font-weight:700;line-height:100%;letter-spacing:0;text-align:center;vertical-align:middle}.section-header p{margin:.5rem 0 0}.section-items{margin:70px 0;display:flex;flex-wrap:wrap;gap:1rem;justify-content:center}.section-card{flex:1 1 250px;max-width:300px;background-color:#e0f2e9;color:#333;border-radius:12px;padding:1rem;box-shadow:0 2px 6px rgba(0,0,0,.1);transition:background-color .3s ease}.green-bg .section-card{background-color:#ffffff;color:#333}@media (max-width:600px){.section-card{flex:auto}.section-items{flex-direction:column;align-items:center}.section-card{max-width:90%}}