:root{--color-primary: #2563eb;--color-secondary: #1d4ed8;--color-accent: #dc2626;--color-success: #16a34a;--color-dark: #1e293b;--color-gray-900: #0f172a;--color-gray-700: #334155;--color-gray-500: #64748b;--color-gray-300: #cbd5e1;--color-gray-100: #f1f5f9;--color-white: #ffffff;--color-science: #0ea5e9;--color-historia: #b91c1c;--font-sans: "Source Sans 3", -apple-system, BlinkMacSystemFont, sans-serif;--shadow-sm: 0 1px 2px rgba(0,0,0,.05);--shadow-md: 0 4px 6px -1px rgba(0,0,0,.1);--shadow-lg: 0 10px 15px -3px rgba(0,0,0,.1);--transition: all .2s ease;--radius: 8px;--radius-lg: 12px}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font-sans);color:var(--color-dark);background:var(--color-gray-100);line-height:1.7;font-size:16px}h1,h2,h3,h4{font-weight:600;line-height:1.3;color:var(--color-dark)}h1{font-size:clamp(1.75rem,4vw,2.5rem)}h2{font-size:clamp(1.4rem,3vw,1.8rem)}h3{font-size:1.15rem}a{color:var(--color-primary);text-decoration:none;transition:var(--transition)}a:hover{color:var(--color-secondary)}.container{max-width:1100px;margin:0 auto;padding:0 20px}.header{position:sticky;top:0;z-index:100;background:var(--color-white);border-bottom:1px solid var(--color-gray-300)}.header-inner{display:flex;justify-content:space-between;align-items:center;padding:12px 20px;max-width:1200px;margin:0 auto}.logo{font-size:1.25rem;font-weight:700;color:var(--color-dark);display:flex;align-items:center;gap:8px}.logo-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--color-primary),var(--color-science));border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.1rem}.nav{display:flex;gap:24px;align-items:center}.nav a{font-size:.9rem;font-weight:500;color:var(--color-gray-700)}.nav a:hover{color:var(--color-primary)}.hero{background:linear-gradient(135deg,var(--color-primary),var(--color-science));padding:60px 20px;text-align:center;color:#fff}.hero-content{max-width:650px;margin:0 auto}.hero h1{margin-bottom:16px;color:#fff}.hero p{opacity:.95;font-size:1.1rem;margin-bottom:24px}.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;background:var(--color-primary);color:var(--color-white);font-weight:600;font-size:.95rem;border-radius:var(--radius);transition:var(--transition);border:none;cursor:pointer}.btn:hover{background:var(--color-secondary);color:var(--color-white);transform:translateY(-1px)}.btn-white{background:#fff;color:var(--color-primary)}.btn-white:hover{background:var(--color-gray-100);color:var(--color-secondary)}.btn-outline{background:transparent;border:2px solid var(--color-gray-300);color:var(--color-dark)}.btn-outline:hover{border-color:var(--color-primary);color:var(--color-primary);background:transparent}.section{padding:50px 0}.section-white{background:var(--color-white)}.section-header{margin-bottom:30px;text-align:center}.section-header h2{margin-bottom:8px}.section-header p{color:var(--color-gray-500);max-width:600px;margin:0 auto}.grid{display:grid;gap:20px}.grid-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}.grid-3{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}.grid-4{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}.card{background:var(--color-white);border:1px solid var(--color-gray-300);border-radius:var(--radius-lg);padding:24px;transition:var(--transition)}.card:hover{border-color:var(--color-primary);box-shadow:var(--shadow-md)}.card-icon{width:48px;height:48px;background:var(--color-gray-100);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:16px}.card h3{margin-bottom:8px}.card p{color:var(--color-gray-500);font-size:.95rem;margin-bottom:12px}.card-link{font-size:.9rem;font-weight:600;color:var(--color-primary)}.magazine-card{display:flex;gap:20px;padding:20px}.magazine-cover{width:100px;height:130px;border-radius:var(--radius);flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:2.5rem;color:#fff}.magazine-cover.science{background:linear-gradient(135deg,#0ea5e9,#0284c7)}.magazine-cover.historia{background:linear-gradient(135deg,#b91c1c,#991b1b)}.magazine-cover.cahiers{background:linear-gradient(135deg,#059669,#047857)}.magazine-info{flex:1}.magazine-info h3{font-size:1.1rem;margin-bottom:6px}.magazine-info p{font-size:.9rem;margin-bottom:10px}.magazine-meta{display:flex;gap:16px;font-size:.85rem;color:var(--color-gray-500)}.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:24px;text-align:center;padding:30px 0}.stat-value{font-size:2.5rem;font-weight:700;color:var(--color-primary)}.stat-label{font-size:.9rem;color:var(--color-gray-500)}.cta{background:linear-gradient(135deg,var(--color-dark),var(--color-gray-700));padding:60px 20px;text-align:center;color:#fff}.cta h2{color:#fff;margin-bottom:12px}.cta p{opacity:.9;max-width:550px;margin:0 auto 24px}.footer{background:var(--color-gray-900);color:var(--color-gray-300);padding:50px 0 30px}.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:40px;margin-bottom:40px}.footer h4{color:#fff;font-size:.95rem;margin-bottom:16px}.footer-links{list-style:none}.footer-links li{margin-bottom:10px}.footer-links a{color:var(--color-gray-300);font-size:.9rem}.footer-links a:hover{color:#fff}.footer-bottom{border-top:1px solid var(--color-gray-700);padding-top:24px;text-align:center;font-size:.85rem;color:var(--color-gray-500)}.page-header{background:var(--color-white);padding:50px 20px;text-align:center;border-bottom:1px solid var(--color-gray-300)}.page-header h1{margin-bottom:10px}.page-header p{color:var(--color-gray-500);max-width:600px;margin:0 auto}.article-content{max-width:750px;margin:0 auto;padding:50px 20px}.article-content h2{margin:36px 0 16px}.article-content h3{margin:28px 0 12px}.article-content p{margin-bottom:18px}.article-content ul,.article-content ol{margin:18px 0;padding-left:24px}.article-content li{margin-bottom:10px}.article-content table{width:100%;border-collapse:collapse;margin:20px 0}.article-content th,.article-content td{padding:12px;border:1px solid var(--color-gray-300);text-align:left}.article-content th{background:var(--color-gray-100);font-weight:600}.highlight-box{background:linear-gradient(135deg,#eff6ff,#dbeafe);border-left:4px solid var(--color-primary);padding:20px;margin:24px 0;border-radius:0 var(--radius) var(--radius) 0}.menu-toggle{display:none;background:none;border:none;font-size:1.3rem;cursor:pointer}@media (max-width: 768px){.menu-toggle{display:block}.nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;padding:16px;gap:12px;border-bottom:1px solid var(--color-gray-300)}.nav.active{display:flex}}