.posters-container-wrapper{background-color:#f0f4f8;background-image:url(/images/chemistry-background.png);background-position:50%;background-repeat:no-repeat;background-size:cover;display:flex;justify-content:center;min-height:100vh;padding:40px 20px}.posters-container{background-color:#fff;border-radius:12px;box-shadow:0 6px 18px rgba(0,0,0,.12);max-width:1500px;padding:0 20px 28px;text-align:left;width:100%}.posters-title{color:#333;font-size:32px;line-height:1.2;margin:20px 0 10px}.posters-intro{color:#243447;font-size:20px;line-height:1.6;margin-bottom:24px}.posters-info-card a{color:#0f766e;font-weight:700;text-decoration:none}.posters-info-card a:hover{text-decoration:underline}.poster-download-card{background:#fff;border:1px solid #d8e6ef;border-radius:14px;box-shadow:0 6px 16px rgba(15,23,42,.06);margin:20px auto 0;max-width:760px;padding:22px;text-align:center}.poster-download-card h2{color:#2c3e50;font-size:1.4rem;margin:0 0 .75rem}.poster-preview-frame{background-color:#fff;border:1px solid #bbb;display:inline-block;margin-bottom:1rem;padding:4px}.poster-preview-image{display:block;height:auto;max-width:100%;width:280px}.poster-download-buttons{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}@media (max-width:768px){.posters-container{border-radius:0;padding:24px 18px}.posters-title{font-size:28px}.poster-download-card{padding:18px}}