.header{background-color:var(--bg-color);box-shadow:var(--shadow);position:sticky;top:0;z-index:1000}.header-content{display:flex;justify-content:space-between;align-items:center;padding:1rem 0}.logo h1{font-size:1.5rem;color:var(--primary-color);font-weight:700}.nav{display:flex;gap:2rem}.nav a{text-decoration:none;color:var(--text-color);font-weight:500;transition:color .3s ease;position:relative}.nav a:hover{color:var(--primary-color)}.nav a:after{content:"";position:absolute;bottom:-5px;left:0;width:0;height:2px;background-color:var(--primary-color);transition:width .3s ease}.nav a:hover:after{width:100%}.menu-toggle{display:none;flex-direction:column;gap:4px;background:none;border:none;cursor:pointer;padding:8px}.menu-toggle span{width:25px;height:3px;background-color:var(--text-color);transition:all .3s ease}@media (max-width: 768px){.menu-toggle{display:flex}.nav{position:absolute;top:100%;left:0;right:0;background-color:var(--bg-color);flex-direction:column;padding:1rem;box-shadow:var(--shadow-lg);transform:translateY(-100%);opacity:0;visibility:hidden;transition:all .3s ease}.nav-open{transform:translateY(0);opacity:1;visibility:visible}}.hero{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:8rem 0;text-align:center}.hero-content{max-width:800px;margin:0 auto}.hero-title{font-size:3.5rem;font-weight:700;margin-bottom:1.5rem;animation:fadeInUp .8s ease}.hero-subtitle{font-size:1.25rem;margin-bottom:2.5rem;opacity:.95;animation:fadeInUp .8s ease .2s both}.hero-buttons{display:flex;gap:1rem;justify-content:center;animation:fadeInUp .8s ease .4s both}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@media (max-width: 768px){.hero{padding:5rem 0}.hero-title{font-size:2.5rem}.hero-subtitle{font-size:1rem}.hero-buttons{flex-direction:column;align-items:center}.hero-buttons .btn{width:100%;max-width:300px}}.features{padding:5rem 0;background-color:var(--bg-light)}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem}.feature-card{background-color:var(--bg-color);padding:2rem;border-radius:12px;text-align:center;box-shadow:var(--shadow);transition:all .3s ease}.feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}.feature-icon{font-size:3rem;margin-bottom:1rem}.feature-title{font-size:1.5rem;font-weight:600;margin-bottom:1rem;color:var(--text-color)}.feature-description{color:var(--text-light);line-height:1.6}@media (max-width: 768px){.features{padding:3rem 0}.features-grid{grid-template-columns:1fr}}.about{padding:5rem 0;background-color:var(--bg-color)}.about-content{max-width:800px;margin:0 auto}.about-text p{font-size:1.1rem;color:var(--text-light);margin-bottom:1.5rem;line-height:1.8}@media (max-width: 768px){.about{padding:3rem 0}.about-text p{font-size:1rem}}.footer{background-color:var(--text-color);color:#fff;padding:3rem 0 1rem;margin-top:auto}.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:2rem;margin-bottom:2rem}.footer-section h3,.footer-section h4{margin-bottom:1rem;color:#fff}.footer-section p{color:#fffc;margin-bottom:.5rem}.footer-section ul{list-style:none}.footer-section ul li{margin-bottom:.5rem}.footer-section a{color:#fffc;text-decoration:none;transition:color .3s ease}.footer-section a:hover{color:#fff}.footer-bottom{text-align:center;padding-top:2rem;border-top:1px solid rgba(255,255,255,.1)}.footer-bottom p{color:#fff9;font-size:.9rem}@media (max-width: 768px){.footer-content{grid-template-columns:1fr}}.app{min-height:100vh;display:flex;flex-direction:column}*{margin:0;padding:0;box-sizing:border-box}:root{--primary-color: #6366f1;--primary-dark: #4f46e5;--secondary-color: #8b5cf6;--text-color: #1f2937;--text-light: #6b7280;--bg-color: #ffffff;--bg-light: #f9fafb;--border-color: #e5e7eb;--shadow: 0 4px 6px -1px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;color:var(--text-color);line-height:1.6}.container{max-width:1200px;margin:0 auto;padding:0 20px}.btn{padding:12px 24px;border:none;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:all .3s ease}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-primary:hover{background-color:var(--primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-lg)}.btn-secondary{background-color:transparent;color:var(--primary-color);border:2px solid var(--primary-color)}.btn-secondary:hover{background-color:var(--primary-color);color:#fff}.section-title{font-size:2.5rem;font-weight:700;text-align:center;margin-bottom:3rem;color:var(--text-color)}@media (max-width: 768px){.section-title{font-size:2rem}}