.useful-documents-section{box-sizing:border-box;font-family:inherit;margin:0 auto;max-width:1200px;padding:40px 20px}.useful-documents-section h2{font-family:Poppins,sans-serif;font-size:50px;font-style:normal;font-weight:400;text-align:center;text-decoration:none;text-transform:none}.document-filter-buttons{align-items:center;display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:65px}.filter-btn{background-color:#fff;border:1px solid #cbd6e2;border-radius:20px;color:#33475b;cursor:pointer;font-size:14px;font-weight:600;justify-content:center;outline:none;padding:12px 18px;text-align:center;transition:all .2s ease-in-out;width:120px}.filter-btn.active,.filter-btn:hover{background-color:#00c3cc;border-color:#00c3cc;color:#fff}.filter-btn.active{text-decoration:none}.documents-grid{display:grid;gap:24px;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}.document-card{background:#fff;border:1px solid #eaf0f6;border-radius:8px;box-shadow:0 4px 12px rgba(0,0,0,.05);box-sizing:border-box;display:flex;flex-direction:column;justify-content:space-between;padding:24px;transition:transform .2s ease,box-shadow .2s ease,opacity .3s ease}.document-card:hover{box-shadow:0 8px 20px rgba(0,0,0,.1);transform:translateY(-3px)}.document-card.hidden{display:none!important}.category-badge{color:#ff7a59;display:inline-block;font-size:11px;font-weight:700;letter-spacing:.5px;margin-bottom:8px;text-transform:uppercase}.document-card h3{color:#33475b;font-size:18px;font-weight:600;line-height:1.3;margin:0 0 10px}.document-desc{color:#516f90;flex-grow:1;font-size:14px;line-height:1.5;margin:0 0 20px}.download-btn{align-items:center;border:none;border-radius:50px;color:#fff;display:flex;font-size:16px;justify-content:center;padding:12px 16px;text-align:center}.download-btn,.download-btn:hover{background-color:#00c3cc;text-decoration:none}.document-thumbnail{background-color:#f5f8fa;border-radius:6px;height:160px;margin-bottom:16px;overflow:hidden;width:100%}.document-thumbnail img{display:block;height:100%;object-fit:cover;width:100%}