.hero{background:linear-gradient(135deg,var(--primary-light) 0%,var(--background-white) 100%);padding:var(--spacing-xxl)0;text-align:center}.hero h1{font-size:3rem;margin-bottom:var(--spacing-lg);color:var(--text-primary)}.hero-subtitle{font-size:1.25rem;color:var(--text-secondary);margin-bottom:var(--spacing-xl);max-width:600px;margin-left:auto;margin-right:auto}.hero-buttons{display:flex;gap:var(--spacing-md);justify-content:center;flex-wrap:wrap}.features{padding:var(--spacing-xxl)0;background-color:var(--background-white)}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--spacing-xl);margin-top:var(--spacing-xxl)}.feature-card{text-align:center;padding:var(--spacing-xl)}.feature-icon{width:60px;height:60px;margin:0 auto var(--spacing-lg);background-color:var(--primary-light);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--primary-color)}.feature-icon svg{width:30px;height:30px}.how-it-works{padding:var(--spacing-xxl)0;background-color:var(--background-color)}.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:var(--spacing-xl);margin-top:var(--spacing-xxl)}.step{text-align:center}.step-number{width:50px;height:50px;margin:0 auto var(--spacing-md);background-color:var(--primary-color);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.5rem;font-weight:600}.ai-export{padding:var(--spacing-xxl)0;background-color:var(--background-gray)}.ai-export-section{padding:var(--spacing-xxl)0;background-color:#f8f9fa}.ai-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(350px,1fr));gap:var(--spacing-xl);margin-top:var(--spacing-xxl)}.ai-card{background:#fff;padding:var(--spacing-xl);border-radius:var(--radius-lg);border:1px solid var(--border-color);transition:all var(--transition-medium);text-align:center}.ai-card:hover{border-color:var(--primary-color);box-shadow:0 8px 24px rgba(0,0,0,.1);transform:translateY(-2px)}.ai-card h3{color:var(--primary-color);margin-bottom:var(--spacing-md);font-size:1.25rem}.ai-card p,.ai-cta p{color:var(--text-secondary)}.ai-card p{margin-bottom:var(--spacing-lg);line-height:1.6}.ai-icon{width:80px;height:80px;margin:0 auto var(--spacing-lg);background-color:var(--primary-light);border-radius:50%;display:flex;align-items:center;justify-content:center}.ai-icon svg,.ai-platform-icon svg{width:48px;height:48px;color:var(--primary-color)}.ai-cta{margin-top:var(--spacing-xxl);text-align:center}.ai-cta p{max-width:800px;margin:0 auto var(--spacing-xl);font-size:1.1rem}.ai-platforms-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:var(--spacing-lg);margin-top:var(--spacing-xl)}.ai-platform-card{background:#fff;padding:var(--spacing-xl);border-radius:var(--radius-lg);border:1px solid #e0e0e0;text-align:center;transition:all .3s ease}.ai-platform-card:hover{transform:translateY(-4px);box-shadow:0 12px 24px rgba(0,0,0,.1)}.ai-platform-icon{width:80px;height:80px;margin:0 auto var(--spacing-md);background-color:#f0f7ff;border-radius:50%;display:flex;align-items:center;justify-content:center}.ai-platform-card h3{font-size:1.25rem;margin-bottom:var(--spacing-sm);color:var(--text-primary)}.ai-export-cta p,.ai-platform-card p{color:var(--text-secondary);line-height:1.6}.ai-export-cta{margin-top:var(--spacing-xxl);text-align:center}.ai-export-cta p{max-width:800px;margin:0 auto var(--spacing-lg);font-size:1.1rem}.icon-circle,.platform-icon{display:flex;align-items:center;justify-content:center}.platform-icon{width:80px;height:80px;margin:0 auto var(--spacing-md)}.icon-circle{width:70px;height:70px;border-radius:50%;background:linear-gradient(135deg,var(--primary-color),var(--primary-light));color:#fff;font-size:1.8rem;font-weight:600;text-shadow:0 1px 3px rgba(0,0,0,.3)}.platform-features{display:flex;flex-direction:column;gap:var(--spacing-sm)}.platform-features span{color:var(--text-light);font-size:.875rem;display:flex;align-items:center}.articles{padding:var(--spacing-xxl)0;background-color:var(--background-white)}.articles-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--spacing-xl);margin-top:var(--spacing-xxl)}.article-card{border:1px solid var(--border-color);transition:all var(--transition-medium)}.ai-platform-card:hover,.article-card:hover{border-color:var(--primary-color)}.article-meta{display:flex;gap:var(--spacing-md);font-size:.875rem;color:var(--text-light);margin-bottom:var(--spacing-sm)}.ai-guides{padding:100px 0;background:linear-gradient(180deg,#fff 0,#f8f9fa 100%)}.ai-guides h2{font-size:2.5rem;margin-bottom:20px;color:#2d3748}.ai-guides .text-secondary{font-size:1.2rem;max-width:700px;margin:0 auto}.ai-guides-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:30px;margin-top:50px}.guide-card{background:#fff;border-radius:16px;padding:35px;box-shadow:0 4px 12px rgba(0,0,0,.08);text-align:center;transition:transform .3s ease,box-shadow .3s ease;border:1px solid rgba(102,126,234,.1)}.guide-card:hover{transform:translateY(-5px);box-shadow:0 8px 20px rgba(0,0,0,.15)}.guide-icon{width:90px;height:90px;margin:0 auto 25px;background:linear-gradient(135deg,#667eea 0,#764ba2 100%);border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 20px rgba(102,126,234,.3)}.guide-icon svg{width:40px;height:40px;color:#fff}.guide-card h3{font-size:1.25rem;margin-bottom:15px;color:#2d3748}.guide-card h3 a{color:inherit}.guide-card h3 a:hover,.guide-link{color:#667eea}.guide-card p{color:#718096;line-height:1.6;margin-bottom:20px}.guide-card h3 a,.guide-link{text-decoration:none;transition:color .3s ease}.guide-link{display:inline-block;font-weight:600}.guide-link:hover{color:#764ba2;text-decoration:underline}.cta{background-color:var(--primary-color);color:#fff;padding:var(--spacing-xxl)0;text-align:center}.cta h2{color:#fff;margin-bottom:var(--spacing-lg)}.cta p{font-size:1.125rem;margin-bottom:var(--spacing-xl);opacity:.9}@media (max-width:768px){.hero h1{font-size:2rem}.hero-subtitle{font-size:1.125rem}.ai-grid,.articles-grid,.features-grid{grid-template-columns:1fr;gap:var(--spacing-lg)}.steps{grid-template-columns:1fr}}