*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;line-height:1.6;color:#333;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);min-height:100vh}.container{max-width:1200px;margin:0 auto;padding:0 20px}.navbar{background:rgba(255,255,255,0.95);box-shadow:0 2px 10px rgba(0,0,0,0.1);position:sticky;top:0;z-index:100}.nav-container{max-width:1200px;margin:0 auto;padding:1rem 20px;display:flex;justify-content:space-between;align-items:center}.nav-logo{font-size:1.5rem;font-weight:bold;color:#667eea;text-decoration:none}.nav-links a{color:#666;text-decoration:none;margin-left:2rem;transition:color 0.3s;cursor:pointer}.nav-links a:hover,.nav-links a.active{color:#667eea}.blog-header{text-align:center;padding:4rem 0 2rem 0;color:white}.blog-header h1{font-size:3rem;margin-bottom:1rem;animation:fadeInDown 0.8s}.blog-header p{font-size:1.2rem;opacity:0.9;animation:fadeInUp 0.8s}.stats{display:flex;justify-content:center;gap:2rem;margin-top:2rem;font-size:0.9rem;opacity:0.8}.stats span{background:rgba(255,255,255,0.2);padding:0.3rem 1rem;border-radius:20px}.category-filter{display:flex;justify-content:center;flex-wrap:wrap;gap:0.5rem;margin-bottom:2rem}.filter-label{color:white;margin-right:0.5rem;line-height:2rem}.filter-btn{background:rgba(255,255,255,0.2);border:none;color:white;padding:0.3rem 1rem;border-radius:20px;cursor:pointer;transition:all 0.3s}.filter-btn:hover,.filter-btn.active{background:#667eea;color:white}.articles-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(350px,1fr));gap:2rem;margin-bottom:3rem}.article-card{background:white;border-radius:12px;overflow:hidden;box-shadow:0 4px 6px rgba(0,0,0,0.1);transition:transform 0.3s,box-shadow 0.3s;cursor:pointer}.article-card:hover{transform:translateY(-5px);box-shadow:0 8px 15px rgba(0,0,0,0.2)}.article-content{padding:1.5rem}.article-title{font-size:1.3rem;margin-bottom:0.5rem;color:#333}.article-summary{color:#666;margin-bottom:1rem;line-height:1.5}.article-meta{display:flex;justify-content:space-between;align-items:center;font-size:0.85rem;color:#999;margin-bottom:1rem}.category{background:#f0f0f0;padding:0.2rem 0.6rem;border-radius:20px;color:#667eea}.tags{display:flex;gap:0.5rem;flex-wrap:wrap;margin-top:1rem}.tag{background:#e8f4f8;padding:0.2rem 0.6rem;border-radius:20px;font-size:0.75rem;color:#667eea}.pagination{display:flex;justify-content:center;gap:0.5rem;margin:3rem 0}.pagination button{padding:0.5rem 1rem;border:1px solid #ddd;background:white;cursor:pointer;border-radius:5px;transition:all 0.3s}.pagination button:hover,.pagination button.active{background:#667eea;color:white;border-color:#667eea}.modal{display:none;position:fixed;z-index:1000;left:0;top:0;width:100%;height:100%;background:rgba(0,0,0,0.5);animation:fadeIn 0.3s}.modal-content{background:white;margin:5% auto;padding:2rem;width:90%;max-width:800px;border-radius:12px;max-height:80vh;overflow-y:auto;animation:slideDown 0.3s}.close{float:right;font-size:28px;font-weight:bold;cursor:pointer;color:#999}.close:hover{color:#333}.categories-list{display:flex;flex-direction:column;gap:0.5rem;margin-top:1rem}.category-item{display:flex;justify-content:space-between;align-items:center;padding:0.8rem;border-bottom:1px solid #eee;cursor:pointer;transition:background 0.3s}.category-item:hover{background:#f5f5f5;color:#667eea}.category-count{color:#999;font-size:0.85rem}#articleContent{line-height:1.8}#articleContent h1,#articleContent h2{margin-top:1.5rem;margin-bottom:1rem}#articleContent p{margin-bottom:1rem}.about-content h3{margin-top:1.5rem;margin-bottom:0.5rem;color:#667eea}.about-content ul{margin-left:2rem;margin-bottom:1rem}.footer{background:rgba(0,0,0,0.8);color:white;text-align:center;padding:2rem 0;margin-top:4rem}@keyframes fadeInDown{from{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{from{opacity:0}to{opacity:1}}@keyframes slideDown{from{transform:translateY(-50px);opacity:0}to{transform:translateY(0);opacity:1}}@media(max-width:768px){.articles-grid{grid-template-columns:1fr}.blog-header h1{font-size:2rem}.nav-links a{margin-left:1rem}.stats{flex-direction:column;gap:0.5rem}}