.hero{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:40px var(--container-padding);text-align:center;background:var(--bg);position:relative;overflow:hidden}.hero-content{max-width:800px;z-index:10}.hero-title{font-size:var(--font-size-3xl);font-weight:800;margin-bottom:20px;color:var(--text-strong);line-height:1.2}.hero-subtitle{font-size:var(--font-size-lg);color:var(--text-main);margin-bottom:40px;line-height:1.6}.hero-actions{display:flex;justify-content:center;gap:20px}.hero-btn{padding:12px 32px;font-size:var(--font-size-md)}.features{padding:80px var(--container-padding);background:var(--bg)}.features-header{text-align:center;margin-bottom:60px}.features-title{font-size:var(--font-size-2xl);font-weight:700;color:var(--text-strong);margin-bottom:16px}.features-subtitle{font-size:var(--font-size-md);color:var(--text-muted);max-width:600px;margin:0 auto}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:30px;max-width:var(--max-width);margin:0 auto}.feature-card{padding:40px;text-align:center;transition:transform .3s ease}.feature-card:hover{transform:translateY(-10px)}.feature-icon{width:64px;height:64px;margin:0 auto 24px;display:flex;align-items:center;justify-content:center;font-size:var(--font-size-2xl);color:var(--accent);border-radius:50%}.feature-title{font-size:var(--font-size-xl);font-weight:600;margin-bottom:16px;color:var(--text-strong)}.feature-desc{color:var(--text-main);line-height:1.6}.presentation{padding:80px var(--container-padding);background:var(--bg)}.presentation-content{max-width:var(--max-width);margin:0 auto;display:flex;flex-direction:column;gap:80px}.presentation-row{display:flex;align-items:center;gap:60px}.presentation-row.reverse{flex-direction:row-reverse}.presentation-text{flex:1}.presentation-image-container{flex:1;display:flex;justify-content:center}.presentation-image{width:100%;max-width:500px;height:300px;display:flex;align-items:center;justify-content:center;font-size:var(--font-size-xl);color:var(--text-muted)}.presentation-title{font-size:var(--font-size-2xl);font-weight:700;margin-bottom:20px;color:var(--text-strong)}.presentation-desc{font-size:var(--font-size-md);color:var(--text-main);line-height:1.6}.landing-footer{padding:40px var(--container-padding);text-align:center;color:var(--text-muted);font-size:var(--font-size-base)}@media (max-width: 768px){.hero-title{font-size:var(--font-size-2xl)}.presentation-row{flex-direction:column;text-align:center;gap:40px}.presentation-row.reverse{flex-direction:column}}