:root{--color-primary: #2563eb;--color-primary-dark: #1d4ed8;--color-accent: #0ea5e9;--color-success: #10b981;--color-warning: #f59e0b;--color-bg: #ffffff;--color-bg-secondary: #f8fafc;--color-bg-tertiary: #f1f5f9;--color-surface: #ffffff;--color-surface-hover: #f8fafc;--color-text: #0f172a;--color-text-secondary: #475569;--color-text-tertiary: #64748b;--color-border: #e2e8f0;--color-border-light: #f1f5f9;--gradient-primary: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);--gradient-accent: linear-gradient(135deg, #0ea5e9 0%, #2563eb 100%);--font-primary: "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-secondary: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--spacing-xs: .5rem;--spacing-sm: 1rem;--spacing-md: 1.5rem;--spacing-lg: 2rem;--spacing-xl: 3rem;--spacing-2xl: 4rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04);--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-base: .2s cubic-bezier(.4, 0, .2, 1);--transition-slow: .3s cubic-bezier(.4, 0, .2, 1)}[data-theme=dark]{--color-bg: #0f172a;--color-bg-secondary: #1e293b;--color-bg-tertiary: #334155;--color-surface: #1e293b;--color-surface-hover: #334155;--color-text: #f8fafc;--color-text-secondary: #cbd5e1;--color-text-tertiary: #94a3b8;--color-border: #334155;--color-border-light: #475569;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .4), 0 2px 4px -1px rgba(0, 0, 0, .3);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .4), 0 4px 6px -2px rgba(0, 0, 0, .3);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .5), 0 10px 10px -5px rgba(0, 0, 0, .4)}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;font-size:16px}body{font-family:var(--font-secondary);background-color:var(--color-bg);color:var(--color-text);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;transition:background-color var(--transition-base),color var(--transition-base)}.container{max-width:1200px;margin:0 auto;padding:0 var(--spacing-md)}h1,h2,h3,h4,h5,h6{font-family:var(--font-primary);font-weight:600;line-height:1.2;margin-bottom:var(--spacing-sm)}h1{font-size:3rem}h2{font-size:2.25rem}h3{font-size:1.5rem}h4{font-size:1.25rem}a{color:inherit;text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-primary)}img{max-width:100%;height:auto;display:block}.navbar{position:sticky;top:0;z-index:1000;background-color:var(--color-surface);border-bottom:1px solid var(--color-border);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:var(--shadow-sm);transition:box-shadow var(--transition-base)}.navbar.scrolled{box-shadow:var(--shadow-md)}.nav-wrapper{display:flex;align-items:center;justify-content:space-between;padding:1rem 0;gap:var(--spacing-lg)}.logo-text{font-family:var(--font-primary);font-size:1.5rem;font-weight:700;color:var(--color-text)}.logo-accent{background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.nav-menu{display:flex;gap:.5rem;align-items:center;flex:1;justify-content:center}.nav-link{font-weight:500;color:var(--color-text-secondary);padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-md);transition:all var(--transition-fast);position:relative;white-space:nowrap;font-size:.9375rem}.nav-link:hover{color:var(--color-primary);background-color:var(--color-surface-hover)}.nav-link.active{color:var(--color-primary);background-color:var(--color-surface-hover);font-weight:600}.nav-item-dropdown{position:relative}.nav-item-dropdown>.nav-link{display:flex;align-items:center;gap:.25rem}.nav-item-dropdown>.nav-link:after{content:"";width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;border-top:4px solid currentColor;margin-left:.25rem;transition:transform var(--transition-fast)}.nav-item-dropdown:hover>.nav-link:after,.nav-item-dropdown.active>.nav-link:after{transform:rotate(180deg)}.dropdown-menu{position:absolute;top:calc(100% + .75rem);left:50%;transform:translate(-50%) translateY(-10px);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);min-width:200px;opacity:0;visibility:hidden;transition:all var(--transition-base);z-index:1000;padding:.5rem 0}.nav-item-dropdown:hover .dropdown-menu,.nav-item-dropdown.active .dropdown-menu{opacity:1;visibility:visible;transform:translate(-50%) translateY(0)}.dropdown-item{display:block;padding:.75rem 1.25rem;color:var(--color-text-secondary);font-size:.9375rem;transition:all var(--transition-fast);border-left:3px solid transparent}.dropdown-item:hover{color:var(--color-primary);background-color:var(--color-surface-hover);border-left-color:var(--color-primary);padding-left:1.5rem}.dropdown-item.active{color:var(--color-primary);background-color:var(--color-surface-hover);border-left-color:var(--color-primary);font-weight:600}.nav-actions{display:flex;gap:var(--spacing-sm);align-items:center}.theme-toggle{background:none;border:none;cursor:pointer;width:40px;height:40px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;color:var(--color-text-secondary);transition:all var(--transition-fast)}.theme-toggle:hover{background-color:var(--color-surface-hover);color:var(--color-primary)}.theme-toggle svg{width:20px;height:20px}.moon-icon,[data-theme=dark] .sun-icon{display:none}[data-theme=dark] .moon-icon{display:block}.mobile-menu-toggle{display:none;flex-direction:column;gap:4px;background:none;border:none;cursor:pointer;padding:var(--spacing-xs)}.mobile-menu-toggle span{width:24px;height:2px;background-color:var(--color-text);transition:all var(--transition-base)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.625rem 1.25rem;font-weight:600;font-size:.875rem;border-radius:var(--radius-md);border:none;cursor:pointer;transition:all var(--transition-fast);text-decoration:none}.btn-primary{background:var(--gradient-primary);color:#fff;box-shadow:var(--shadow-sm)}.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.btn-large{padding:.875rem 2rem;font-size:1rem}.hero{padding:var(--spacing-2xl) 0;background:linear-gradient(135deg,var(--color-bg) 0%,var(--color-bg-secondary) 100%)}.hero-content{max-width:800px;margin:0 auto;text-align:center}.badge{display:inline-flex;align-items:center;gap:.5rem;padding:.5rem 1rem;background:var(--gradient-primary);color:#fff;border-radius:2rem;font-size:.875rem;font-weight:600;margin-bottom:var(--spacing-md)}.badge svg{width:16px;height:16px}.hero-title{font-size:clamp(2rem,5vw,3.5rem);margin-bottom:var(--spacing-md);line-height:1.1}.gradient-text{background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-description{font-size:1.25rem;color:var(--color-text-secondary);margin-bottom:var(--spacing-xl);line-height:1.6}.hero-stats{display:flex;justify-content:center;gap:var(--spacing-xl);margin-bottom:var(--spacing-xl)}.stat{text-align:center}.stat-number{font-size:2rem;font-weight:700;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.stat-label{font-size:.875rem;color:var(--color-text-tertiary);text-transform:uppercase;letter-spacing:.05em}.hero-cta{max-width:600px;margin:0 auto}.newsletter-form{display:flex;gap:var(--spacing-sm);margin-bottom:var(--spacing-sm)}.email-input{flex:1;padding:.875rem 1.25rem;border:2px solid var(--color-border);border-radius:var(--radius-md);font-size:1rem;background-color:var(--color-surface);color:var(--color-text);transition:all var(--transition-fast)}.email-input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #2563eb1a}.form-note,.privacy-note{font-size:.875rem;color:var(--color-text-tertiary);text-align:center}.topics-section{padding:var(--spacing-2xl) 0}.topics-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:var(--spacing-lg)}.topic-card{padding:var(--spacing-lg);background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);text-align:center;transition:all var(--transition-base)}.topic-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--color-primary)}.topic-icon{font-size:3rem;margin-bottom:var(--spacing-sm)}.topic-card h3{margin-bottom:var(--spacing-xs);color:var(--color-text)}.topic-card p{color:var(--color-text-secondary);font-size:.875rem}.articles-section{padding:var(--spacing-2xl) 0;background-color:var(--color-bg-secondary)}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-xl)}.section-title{font-size:2rem}.view-all{color:var(--color-primary);font-weight:600;transition:transform var(--transition-fast)}.view-all:hover{transform:translate(4px)}.articles-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:var(--spacing-lg)}.article-card{background-color:var(--color-surface);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);transition:all var(--transition-base)}.article-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-xl)}.article-card.featured{grid-column:span 2}.article-image{position:relative;height:200px;overflow:hidden;background:linear-gradient(135deg,#667eea,#764ba2)}.article-card.featured .article-image{height:300px}.article-image img{width:100%;height:100%;object-fit:cover;transition:transform var(--transition-slow)}.article-card:hover .article-image img{transform:scale(1.05)}.article-category{position:absolute;top:var(--spacing-sm);left:var(--spacing-sm);padding:.375rem .75rem;background-color:#fffffff2;color:var(--color-primary);font-size:.75rem;font-weight:600;text-transform:uppercase;border-radius:var(--radius-sm)}.article-content{padding:var(--spacing-lg)}.article-meta{display:flex;gap:var(--spacing-sm);margin-bottom:var(--spacing-sm);font-size:.875rem;color:var(--color-text-tertiary)}.article-title{font-size:1.25rem;margin-bottom:var(--spacing-sm);line-height:1.3}.article-title a{color:var(--color-text)}.article-title a:hover{color:var(--color-primary)}.article-excerpt{color:var(--color-text-secondary);font-size:.9375rem;line-height:1.6;margin-bottom:var(--spacing-md)}.article-footer{display:flex;justify-content:space-between;align-items:center;padding-top:var(--spacing-md);border-top:1px solid var(--color-border)}.article-author{display:flex;align-items:center;gap:var(--spacing-sm)}.author-avatar{width:32px;height:32px;border-radius:50%;background:var(--gradient-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:600}.author-name{font-size:.875rem;font-weight:500;color:var(--color-text-secondary)}.article-tags{display:flex;gap:.5rem}.tag{padding:.25rem .625rem;background-color:var(--color-bg-tertiary);color:var(--color-text-secondary);font-size:.75rem;border-radius:var(--radius-sm)}.newsletter-section{padding:var(--spacing-2xl) 0}.newsletter-card{background:var(--gradient-primary);border-radius:var(--radius-xl);padding:var(--spacing-2xl);color:#fff;text-align:center}.newsletter-content h2{font-size:2.5rem;margin-bottom:var(--spacing-md);color:#fff}.newsletter-content>p{font-size:1.125rem;margin-bottom:var(--spacing-xl);opacity:.95}.newsletter-benefits{list-style:none;max-width:600px;margin:0 auto var(--spacing-xl);text-align:left}.newsletter-benefits li{display:flex;align-items:flex-start;gap:var(--spacing-sm);margin-bottom:var(--spacing-md);font-size:1rem}.newsletter-benefits svg{flex-shrink:0;margin-top:.25rem}.newsletter-section .newsletter-form{max-width:500px;margin:0 auto var(--spacing-sm)}.newsletter-section .email-input{background-color:#fff;border-color:transparent}.newsletter-section .btn-primary{background-color:#fff;color:var(--color-primary)}.newsletter-section .btn-primary:hover{background-color:#fffffff2}.footer{background-color:var(--color-bg-secondary);padding:var(--spacing-2xl) 0 var(--spacing-lg);border-top:1px solid var(--color-border)}.footer-content,.footer-grid{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:var(--spacing-xl);margin-bottom:var(--spacing-xl)}.footer-logo{margin-bottom:var(--spacing-md)}.footer-description{color:var(--color-text-secondary);margin-bottom:var(--spacing-md)}.social-links{display:flex;gap:var(--spacing-sm)}.social-link{width:40px;height:40px;border-radius:var(--radius-md);background-color:var(--color-surface);display:flex;align-items:center;justify-content:center;color:var(--color-text-secondary);transition:all var(--transition-fast)}.social-link:hover{background-color:var(--color-primary);color:#fff;transform:translateY(-2px)}.footer-column h4{margin-bottom:var(--spacing-md);font-size:1rem;font-weight:600}.footer-links{list-style:none}.footer-links li{margin-bottom:var(--spacing-sm)}.footer-links a{color:var(--color-text-secondary);font-size:.9375rem;transition:color var(--transition-fast)}.footer-links a:hover{color:var(--color-primary)}.footer-bottom{padding-top:var(--spacing-lg);border-top:1px solid var(--color-border);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:var(--spacing-md);color:var(--color-text-tertiary);font-size:.875rem}.footer-bottom p{margin:0}@media(max-width:768px){.footer-bottom{flex-direction:column;text-align:center}}@media(max-width:968px){.nav-menu{position:fixed;top:0;left:-100%;width:280px;height:100vh;background:var(--color-surface);border-right:1px solid var(--color-border);flex-direction:column;align-items:flex-start;padding:var(--spacing-xl);gap:var(--spacing-md);transition:left var(--transition-base);z-index:999;overflow-y:auto}.nav-menu.active{left:0}.nav-link{width:100%;padding:var(--spacing-sm)}.nav-item-dropdown{width:100%}.dropdown-menu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:none;border-left:2px solid var(--color-border);margin-left:var(--spacing-md);margin-top:var(--spacing-xs);padding:var(--spacing-xs) 0}.dropdown-item{padding-left:var(--spacing-lg)}.footer-content,.footer-grid{grid-template-columns:1fr;gap:var(--spacing-lg)}.articles-grid{grid-template-columns:1fr}.article-card.featured{grid-column:span 1}.footer-grid{grid-template-columns:1fr 1fr}.footer-column:first-child{grid-column:span 2}}@media(max-width:768px){h1{font-size:2rem}h2{font-size:1.75rem}.nav-menu{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;background-color:var(--color-surface);border-bottom:1px solid var(--color-border);padding:var(--spacing-md);box-shadow:var(--shadow-lg)}.nav-menu.active,.mobile-menu-toggle{display:flex}.hero-stats{flex-direction:column;gap:var(--spacing-md)}.newsletter-form{flex-direction:column}.topics-grid,.footer-grid{grid-template-columns:1fr}.footer-column:first-child{grid-column:span 1}}@media(max-width:480px){.container{padding:0 var(--spacing-sm)}.hero,.articles-section,.newsletter-section,.topics-section{padding:var(--spacing-xl) 0}.newsletter-card{padding:var(--spacing-xl) var(--spacing-md)}}.text-center{text-align:center}.mt-1{margin-top:var(--spacing-sm)}.mt-2{margin-top:var(--spacing-md)}.mb-1{margin-bottom:var(--spacing-sm)}.mb-2{margin-bottom:var(--spacing-md)}.p-1{padding:var(--spacing-sm)}.p-2{padding:var(--spacing-md)}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn var(--transition-slow) ease-out}.contact-form-container{background:var(--color-surface);padding:2.5rem;border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}.contact-form{display:flex;flex-direction:column;gap:1.5rem}.form-group{display:flex;flex-direction:column;gap:.5rem}.form-group label{font-weight:500;color:var(--color-text);font-size:.9375rem}.form-input{padding:.875rem 1rem;border:1px solid var(--color-border);border-radius:var(--radius-md);font-family:var(--font-secondary);font-size:1rem;background-color:var(--color-bg);color:var(--color-text);transition:border-color var(--transition-fast),box-shadow var(--transition-fast);width:100%}.form-input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #2563eb1a}.form-input::placeholder{color:var(--color-text-tertiary)}textarea.form-input{resize:vertical;min-height:120px}select.form-input{cursor:pointer}.form-message{padding:1rem;border-radius:var(--radius-md);margin-top:1rem;text-align:center;font-size:.9375rem}.form-message.success{background-color:#d1fae5;color:#065f46;border:1px solid #10b981}.form-message.error{background-color:#fee2e2;color:#991b1b;border:1px solid #ef4444}.contact-info{background:var(--color-bg-secondary);padding:2.5rem;border-radius:var(--radius-lg)}.contact-info h4{font-family:var(--font-primary);font-weight:600}@media(min-width:768px){.contact-form-container,.contact-info{grid-template-columns:1fr 1fr}}@media print{.navbar,.newsletter-section,.footer{display:none}}