.section--learn{padding:2rem 0 4rem}.learn-main{padding:3rem 0}.filter-section{margin-bottom:3rem}.filter-container{display:flex;align-items:center;gap:2rem;justify-content:center;flex-wrap:wrap}.filter-group{display:flex;align-items:center}.filter-divider{width:2px;height:40px;background:linear-gradient(to bottom,transparent,#E5E5E5,transparent);opacity:.6}.filter-section h2{font-size:1.5rem;margin-bottom:1.5rem;color:#1f1f1f}.filter-buttons{display:flex;gap:1rem;flex-wrap:wrap}.filter-btn{background:#fff;color:#1f1f1f;border:2px solid #E5E5E5;padding:.75rem 1.5rem;border-radius:25px;font-weight:500;cursor:pointer;transition:all .3s ease;font-size:.95rem}.filter-btn:hover{border-color:#6bc9ff;color:#6bc9ff;transform:translateY(-2px)}.filter-btn.active{background:linear-gradient(135deg,#6bc9ff,#5ab8e8);color:#fff;border-color:#6bc9ff;box-shadow:0 4px 15px #6bc9ff4d}.posts-feed{display:grid;gap:2rem;grid-template-columns:repeat(2,1fr)}.post-card{background:#fff;border-radius:16px;overflow:hidden;box-shadow:0 4px 20px #00000014;transition:all .3s ease;display:flex;flex-direction:column}.post-card:hover{transform:translateY(-5px);box-shadow:0 8px 30px #0000001f}.post-video-full{position:relative;width:100%;display:flex;flex-direction:column}.video-top-meta{padding:1.5rem 1.5rem 0;background:#fff}.video-thumbnail-full{position:relative;width:100%;aspect-ratio:16 / 9;overflow:hidden}.video-thumbnail-full img{width:100%;height:100%;object-fit:cover}.play-button{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:80px;height:80px;background:#000c;border:none;border-radius:50%;color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .3s ease;z-index:20}.play-button:hover{background:#000000e6;transform:translate(-50%,-50%) scale(1.1)}.play-button svg{width:32px;height:32px;margin-left:4px}.video-duration{position:absolute;bottom:12px;right:12px;background:#000c;color:#fff;padding:4px 8px;border-radius:4px;font-size:.875rem;font-weight:500;z-index:15}.video-title-overlay{position:absolute;top:0;left:0;right:0;background:linear-gradient(rgba(0,0,0,.7),transparent);color:#fff;padding:1.5rem 1.5rem 3rem;z-index:10}.video-title-overlay .video-title{color:#fff;font-size:1.1rem;font-weight:600;line-height:1.3;margin:0;display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;text-shadow:0 2px 4px rgba(0,0,0,.5)}.post-content-only{padding:1.5rem;flex:1;display:flex;flex-direction:column;transition:all .3s ease}.post-video,.post-image{position:relative;width:100%;height:240px;overflow:hidden}.video-thumbnail{position:relative;width:100%;height:100%}.video-thumbnail img{width:100%;height:100%;object-fit:cover}.article-placeholder{width:100%;height:100%;background:linear-gradient(135deg,#6bc9ff,#5ab8e8);display:flex;align-items:center;justify-content:center;color:#fff}.post-content{padding:1.5rem;flex:1;display:flex;flex-direction:column}.post-meta{display:flex;gap:1rem;margin-bottom:1rem;font-size:.85rem;color:#666;flex-wrap:wrap}.post-subject{background:linear-gradient(135deg,#6bc9ff,#5ab8e8);color:#fff;padding:.25rem .75rem;border-radius:12px;font-weight:500;font-size:.8rem}.post-type{background:#f5f5f5;color:#1f1f1f;padding:.25rem .75rem;border-radius:12px;font-weight:500;font-size:.8rem}.post-date{color:#999;font-weight:400}.post-title{font-size:1.4rem;font-weight:700;color:#1f1f1f;margin-bottom:1rem;line-height:1.3}.post-excerpt{color:#666;line-height:1.6;margin-bottom:1.5rem;flex:1}.post-footer{display:flex;justify-content:space-between;align-items:center;margin-top:auto;padding-top:1rem;border-top:1px solid #E5E5E5}.post-author{font-weight:500;color:#1f1f1f;font-size:.9rem}.post-actions{display:flex;align-items:center;gap:1rem}.post-info{color:#666;font-size:.9rem}.expand-btn{background:none;border:none;color:#6bc9ff;font-weight:500;cursor:pointer;display:flex;align-items:center;gap:.5rem;padding:.5rem;border-radius:8px;transition:all .3s ease;font-size:.9rem}.expand-btn:hover{background:#6bc9ff1a;color:#5ab8e8}.expand-btn.expanded{color:#ff6b6b}.expand-btn.expanded:hover{background:#ff6b6b1a;color:#e55a5a}.expand-icon{transition:transform .3s ease}.post-full-content{margin-top:1.5rem;padding-top:1.5rem;border-top:1px solid #E5E5E5;animation:fadeIn .3s ease}.post-full-content h3{color:#1f1f1f;font-size:1.2rem;margin-bottom:1rem;margin-top:1.5rem}.post-full-content h3:first-child{margin-top:0}.post-full-content p{color:#666;line-height:1.7;margin-bottom:1rem}.post-full-content strong{color:#1f1f1f;font-weight:600}@keyframes fadeIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.no-results{text-align:center;padding:3rem 0;color:#666}.no-results h3{font-size:1.5rem;margin-bottom:1rem;color:#1f1f1f}.video-modal{position:fixed;top:0;left:0;width:100%;height:100%;z-index:1000;display:none;align-items:center;justify-content:center;padding:2rem}.modal-backdrop{position:absolute;top:0;left:0;width:100%;height:100%;background:#000000e6;backdrop-filter:blur(10px)}.modal-content{position:relative;width:100%;max-width:900px;background:#1f1f1f;border-radius:12px;overflow:hidden;z-index:1001}.modal-close{position:absolute;top:1rem;right:1rem;background:#fff3;color:#fff;border:none;border-radius:50%;width:40px;height:40px;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:1.5rem;z-index:1002;transition:background .3s ease}.modal-close:hover{background:#ffffff4d}.video-container{position:relative;padding-bottom:56.25%;height:0;overflow:hidden}.video-container iframe{position:absolute;top:0;left:0;width:100%;height:100%}.article-modal{position:fixed;top:0;left:0;width:100%;height:100%;z-index:1000;display:none;align-items:center;justify-content:center;padding:2rem}.article-modal .modal-backdrop{animation:fadeInBackdrop .5s cubic-bezier(.4,0,.2,1)}.article-modal-content{position:relative;width:100%;height:100%;max-width:1200px;max-height:100%;background:#fff;border-radius:24px;z-index:1001;overflow:hidden;box-shadow:0 25px 50px #00000040;animation:expandToFullPage .5s cubic-bezier(.4,0,.2,1);transform-origin:center}.article-container{height:100%;overflow-y:auto;padding:3rem 4rem 4rem}.article-close{position:absolute;top:2rem;right:2rem;background:#1f1f1f1a;color:#1f1f1f;border:none;border-radius:50%;width:50px;height:50px;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:1.8rem;z-index:1002;transition:all .3s ease;backdrop-filter:blur(10px)}.article-close:hover{background:#1f1f1f26;transform:scale(1.1)}.article-header{margin-bottom:3rem;padding-bottom:2rem;border-bottom:2px solid #E5E5E5}.article-meta{display:flex;gap:1rem;margin-bottom:1.5rem;align-items:center}.article-subject{background:linear-gradient(135deg,#6bc9ff,#5ab8e8);color:#fff;padding:.5rem 1rem;border-radius:15px;font-weight:600;font-size:.9rem}.article-date{color:#666;font-size:.95rem}.article-title{font-size:2.5rem;font-weight:700;color:#1f1f1f;line-height:1.2;margin-bottom:1.5rem;font-family:DM Sans,sans-serif}.article-author-info{display:flex;gap:2rem;align-items:center}.article-author{font-weight:600;color:#1f1f1f;font-size:1.1rem}.article-read-time{color:#666;font-size:1rem}.article-content{line-height:1.8;font-size:1.1rem}.article-content h3{color:#1f1f1f;font-size:1.5rem;font-weight:700;margin-top:2.5rem;margin-bottom:1.5rem;font-family:DM Sans,sans-serif}.article-content h3:first-child{margin-top:0}.article-content p{color:#444;margin-bottom:1.5rem;text-align:justify}.article-content strong{color:#1f1f1f;font-weight:600}[data-clickable=true]{transition:all .3s ease}[data-clickable=true]:hover{transform:translateY(-8px);box-shadow:0 12px 40px #00000026}.click-hint{color:#6bc9ff;font-weight:500;font-size:.85rem;margin-left:1rem;opacity:.8}@keyframes expandToFullPage{0%{transform:scale(.3);opacity:0;border-radius:50px}to{transform:scale(1);opacity:1;border-radius:24px}}@keyframes fadeInBackdrop{0%{opacity:0}to{opacity:1}}@media (min-width: 768px){.posts-feed{grid-template-columns:repeat(2,1fr)}.filter-buttons{justify-content:center}.post-content-only{padding:2rem}}@media (max-width: 767px){.posts-feed{grid-template-columns:1fr}.filter-buttons{justify-content:center}.filter-container{flex-direction:column;gap:1.5rem}.filter-divider{width:80px;height:2px;background:linear-gradient(to right,transparent,#E5E5E5,transparent)}.post-meta{flex-direction:column;gap:.5rem}.video-modal,.article-modal{padding:1rem}.article-modal-content{border-radius:16px}.article-container{padding:2rem 1.5rem 3rem}.article-close{top:1rem;right:1rem;width:40px;height:40px;font-size:1.5rem}.article-title{font-size:2rem}.article-author-info{flex-direction:column;gap:.5rem;align-items:flex-start}.video-top-meta{padding:1rem 1rem 0}.video-title-overlay{padding:1rem 1rem 2rem}.video-title-overlay .video-title{font-size:1rem}}