:root{--color-primary:#0077b6;--color-secondary:#00b4d8;--color-accent:#90e0ef;--color-background:#f0f8ff;--color-surface:#ffffff;--color-text:#272d3b;--color-text-light:#8d99ae;--color-success:#48cae4;--font-heading:'Roboto',sans-serif;--font-body:'Source Sans Pro',sans-serif;--spacing-sm:0.5rem;--spacing-md:1rem;--spacing-lg:2rem;--spacing-xl:4rem;--shadow-sm:0 2px 8px rgba(0,119,182,0.1);--shadow-md:0 8px 24px rgba(0,119,182,0.12);--shadow-lg:0 16px 48px rgba(0,119,182,0.15);--radius-sm:8px;--radius-md:16px;--radius-lg:30px;--transition:all 0.3s cubic-bezier(0.4,0,0.2,1)} *{margin:0;padding:0;box-sizing:border-box} body{font-family:var(--font-body);background-color:var(--color-background);color:var(--color-text);line-height:1.7;overflow-x:hidden} h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);color:var(--color-primary);line-height:1.3;font-weight:600} a{text-decoration:none;color:inherit;transition:var(--transition)} ul{list-style:none} img{max-width:100%;display:block;border-radius:var(--radius-md)} .navbar{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-md) var(--spacing-xl);background-color:rgba(255,255,255,0.9);backdrop-filter:blur(10px);box-shadow:var(--shadow-sm);position:sticky;top:0;z-index:1000} .logo{font-family:var(--font-heading);font-size:2rem;font-weight:700;color:var(--color-primary);display:flex;align-items:center;gap:0.5rem;z-index:1001} .logo:hover{opacity:0.8} .logo img{height:40px;width:auto} .nav-links{display:flex;gap:var(--spacing-lg)} .nav-links a{font-weight:500;font-size:1rem;color:var(--color-text);position:relative} .nav-links a::after{content:'';position:absolute;bottom:-5px;left:0;width:0;height:2px;background-color:var(--color-secondary);transition:var(--transition)} .nav-links a:hover::after,.nav-links a.active::after{width:100%} .nav-links a:hover,.nav-links a.active{color:var(--color-primary)} .hamburger{display:none;cursor:pointer;flex-direction:column;gap:6px} .hamburger span{display:block;width:28px;height:3px;background-color:var(--color-primary);border-radius:3px;transition:var(--transition)} .mobile-menu{position:fixed;top:0;left:-280px;width:280px;height:100vh;background-color:var(--color-surface);box-shadow:var(--shadow-lg);padding:90px var(--spacing-md) var(--spacing-xl);transition:left 0.4s cubic-bezier(0.4,0,0.2,1);z-index:999;display:flex;flex-direction:column;gap:var(--spacing-lg)} .hamburger.active span:nth-child(1){transform:translateY(9px) rotate(45deg)} .hamburger.active span:nth-child(2){opacity:0} .hamburger.active span:nth-child(3){transform:translateY(-9px) rotate(-45deg)} .mobile-menu.active{left:0} .mobile-menu a{font-size:1.2rem;font-weight:600;color:var(--color-primary);padding:10px;border-radius:var(--radius-sm)} .mobile-menu a:hover{background-color:var(--color-background)} .overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,119,182,0.2);backdrop-filter:blur(4px);z-index:998;display:none;opacity:0;transition:opacity 0.3s ease} .overlay.active{display:block;opacity:1} .hero{position:relative;min-height:90vh;display:flex;align-items:center;justify-content:center;text-align:center;overflow:hidden;padding:var(--spacing-xl) var(--spacing-md);background:linear-gradient(135deg,var(--color-background) 0%,#e0f7fa 100%)} .hero-content{position:relative;z-index:2;max-width:800px} .hero h1{font-size:4rem;margin-bottom:var(--spacing-md);background:linear-gradient(to right,var(--color-primary),var(--color-secondary));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;animation:fadeInUp 1s ease-out} .hero p{font-size:1.3rem;color:var(--color-text-light);margin-bottom:var(--spacing-lg);animation:fadeInUp 1s ease-out 0.2s backwards} .btn{display:inline-block;padding:16px 40px;background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));color:var(--color-surface);border-radius:50px;font-weight:600;box-shadow:var(--shadow-md);transition:var(--transition);animation:fadeInUp 1s ease-out 0.4s backwards} .btn:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)} .hero-bg-circle{position:absolute;width:600px;height:600px;background:radial-gradient(circle,rgba(144,224,239,0.4) 0%,rgba(255,255,255,0) 70%);border-radius:50%;top:50%;left:50%;transform:translate(-50%,-50%);animation:breathe 6s ease-in-out infinite;z-index:1;pointer-events:none} .floating-cross{position:absolute;width:40px;opacity:0;z-index:1;animation:floatUp 8s infinite linear} .spinning-bacteria{position:absolute;z-index:2;animation:spin 20s linear infinite;filter:drop-shadow(0 4px 6px rgba(0,0,0,0.1))} @keyframes floatUp{0%{transform:translateY(100vh) rotate(0deg);opacity:0} 10%{opacity:0.8} 90%{opacity:0.8} 100%{transform:translateY(-100px) rotate(360deg);opacity:0} } @keyframes spin{from{transform:rotate(0deg)} to{transform:rotate(360deg)} } .parallax-layer{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:1} .section{padding:var(--spacing-xl) var(--spacing-md);max-width:1200px;margin:0 auto} .section-title{text-align:center;font-size:2.5rem;margin-bottom:var(--spacing-xl);color:var(--color-primary)} .grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:var(--spacing-lg)} .card{background:var(--color-surface);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-sm);transition:var(--transition);border:1px solid rgba(0,0,0,0.03)} .card:hover{transform:translateY(-8px);box-shadow:var(--shadow-md)} .card-img{height:220px;width:100%;object-fit:cover} .card-content{padding:var(--spacing-lg)} .card-title{font-size:1.4rem;margin-bottom:var(--spacing-sm);color:var(--color-text)} .card-text{color:var(--color-text-light);margin-bottom:var(--spacing-md);font-size:0.95rem} .card-link{color:var(--color-primary);font-weight:600;display:inline-flex;align-items:center;gap:8px} .card-link:hover{gap:12px} .blog-layout{display:grid;grid-template-columns:280px 1fr;gap:var(--spacing-xl);margin-top:var(--spacing-xl)} .sidebar{background:var(--color-surface);padding:20px;border-radius:var(--radius-md);box-shadow:var(--shadow-sm);height:fit-content} .sidebar-title{margin-bottom:var(--spacing-md);padding-left:12px;font-size:1.2rem;color:var(--color-primary);border-left:4px solid var(--color-secondary)} .search-bar{display:flex;margin-bottom:var(--spacing-lg);box-shadow:var(--shadow-sm);border-radius:var(--radius-sm);overflow:hidden} .search-input{flex:1;padding:12px;border:none;outline:none;font-family:var(--font-body)} .search-btn{padding:12px 18px;background-color:var(--color-primary);color:var(--color-surface);border:none;cursor:pointer;transition:var(--transition)} .search-btn:hover{background-color:var(--color-secondary)} .category-list{padding-left:0} .category-list li{margin-bottom:8px} .category-list a{display:block;padding:10px 14px;border-radius:var(--radius-sm);color:var(--color-text);transition:var(--transition)} .category-list a:hover{background-color:var(--color-background);color:var(--color-primary);transform:translateX(5px)} footer{background-color:var(--color-surface);color:var(--color-text-light);padding:var(--spacing-xl) var(--spacing-md);text-align:center;margin-top:var(--spacing-xl);border-top:1px solid rgba(0,0,0,0.05)} @keyframes fadeInUp{from{opacity:0;transform:translateY(30px)} to{opacity:1;transform:translateY(0)} } @keyframes breathe{0%,100%{transform:translate(-50%,-50%) scale(1);opacity:0.4} 50%{transform:translate(-50%,-50%) scale(1.1);opacity:0.6} } @media (max-width:768px){.nav-links{display:none} .hamburger{display:flex;order:-1} .navbar{justify-content:flex-start;gap:var(--spacing-md)} .logo{margin-left:auto;margin-right:auto} .hero h1{font-size:2.8rem} .blog-layout{grid-template-columns:1fr} } .hero-cursor-glow{position:absolute;width:800px;height:800px;background:radial-gradient(circle,rgba(0,119,182,0.1) 0%,rgba(255,255,255,0) 60%);border-radius:50%;pointer-events:none;transform:translate(-50%,-50%);z-index:0;mix-blend-mode:multiply;transition:width 0.3s ease,height 0.3s ease;filter:blur(20px)}