.button{border:none;border-radius:6px;cursor:pointer;display:inline-block;font-family:inherit;font-size:1rem;font-weight:600;line-height:1.5;padding:12px 24px;text-align:center;text-decoration:none;transition:all .2s ease}.button-primary{background:#1a4e8a;border:2px solid #1a4e8a;color:#fff}.button-primary:hover{background:#0d2855;border-color:#0d2855;box-shadow:0 4px 12px rgba(26,78,138,.3);transform:translateY(-1px)}.button-primary:active{box-shadow:0 2px 6px rgba(26,78,138,.3);transform:translateY(0)}.button-secondary{background:transparent;border:2px solid #1a4e8a;color:#1a4e8a}.button-secondary:hover{background:#1a4e8a;box-shadow:0 4px 12px rgba(26,78,138,.2);color:#fff;transform:translateY(-1px)}.button-secondary:active{box-shadow:0 2px 6px rgba(26,78,138,.2);transform:translateY(0)}.button-large{font-size:1.125rem;padding:16px 32px}.hero-ctas{align-items:center;display:flex;flex-wrap:wrap;gap:16px;justify-content:center;margin-top:16px}.learn-landing{width:100%}.landing-content-container{margin:0 auto;max-width:1400px;padding:0 32px 64px}.landing-section{margin-bottom:80px;margin-top:80px}.landing-section:first-child{margin-top:64px}.section-header{margin-bottom:48px;text-align:center}.section-title{color:#111827;font-size:2rem;font-weight:700;letter-spacing:-.5px;margin:0 0 12px}.section-subtitle{color:#6b7280;font-size:1.125rem;margin:0 auto;max-width:600px}.level-cards{display:grid;gap:24px;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));margin-top:32px}.level-card{background:#fff;border:2px solid #e5e7eb;border-radius:12px;display:flex;flex-direction:column;gap:16px;padding:32px 24px;text-align:center;transition:all .3s ease}.level-card:hover{border-color:#1a4e8a;box-shadow:0 8px 20px rgba(26,78,138,.12);transform:translateY(-4px)}.level-icon{font-size:3rem;margin-bottom:8px}.level-card-title{color:#111827;font-size:1.5rem;font-weight:700;margin:0}.level-card-description{color:#6b7280;flex-grow:1;font-size:1rem;line-height:1.6;margin:0}.level-card-beginner:hover{border-color:#10b981}.level-card-intermediate:hover{border-color:#f59e0b}.level-card-advanced:hover{border-color:#8b5cf6}.empty-state{background:#f9fafb;border:1px dashed #d1d5db;border-radius:12px;padding:64px 32px;text-align:center}.empty-state p{color:#6b7280;font-size:1.125rem;margin:0 0 24px}.empty-state .button{margin-top:8px}.landing-cta-section{background:linear-gradient(135deg,#1a4e8a,#0d2855);border-radius:16px;color:#fff;margin-top:96px;padding:80px 32px;text-align:center}.cta-content{margin:0 auto;max-width:800px}.cta-title{font-size:2.5rem;font-weight:700;letter-spacing:-.5px;margin:0 0 16px}.cta-subtitle{font-size:1.25rem;line-height:1.6;margin:0 0 32px;opacity:.95}.cta-buttons{display:flex;flex-wrap:wrap;gap:16px;justify-content:center}.landing-cta-section .button-primary{background:#fff;border-color:#fff;color:#1a4e8a}.landing-cta-section .button-primary:hover{background:#f3f4f6;border-color:#f3f4f6;color:#0d2855}@media (max-width:900px){.landing-content-container{padding:0 24px 48px}.landing-section{margin-bottom:60px;margin-top:60px}.section-title{font-size:1.75rem}.section-subtitle{font-size:1rem}.cta-title{font-size:2rem}.cta-subtitle{font-size:1.125rem}.level-cards{grid-template-columns:1fr}}@media (max-width:768px){.hero-ctas{flex-direction:column;width:100%}.hero-ctas .button{max-width:320px;width:100%}.landing-content-container{padding:0 16px 32px}.landing-section{margin-bottom:48px;margin-top:48px}.section-header{margin-bottom:32px}.section-title{font-size:1.5rem}.section-subtitle{font-size:.9375rem}.landing-cta-section{margin-top:64px;padding:60px 24px}.cta-title{font-size:1.75rem}.cta-subtitle{font-size:1rem}.cta-buttons{flex-direction:column}.cta-buttons .button{max-width:320px;width:100%}.level-card{padding:24px 20px}.level-icon{font-size:2.5rem}.level-card-title{font-size:1.25rem}.empty-state{padding:48px 24px}.empty-state p{font-size:1rem}}@media (max-width:375px){.button{font-size:.9375rem;padding:10px 20px}.button-large{font-size:1rem;padding:14px 28px}}.button:focus{outline:2px solid #1a4e8a;outline-offset:2px}.button:focus:not(:focus-visible){outline:none}.button:focus-visible{outline:2px solid #1a4e8a;outline-offset:2px}@media (prefers-contrast:high){.button-primary,.button-secondary,.level-card{border-width:3px}}@media (prefers-reduced-motion:reduce){.button,.catalog-card,.level-card{transition:none}.button:hover,.level-card:hover{transform:none}}