:root{--primary:#667eea;--primary-dark:#764ba2;--accent:#27ae60;--warning:#f39c12;--danger:#e74c3c;--text:#333;--text-light:#666;--bg:#f5f7fa;--white:#fff;--gradient:linear-gradient(135deg, #667eea 0%, #764ba2 100%);--gradient-light:linear-gradient(135deg, rgba(102,126,234,0.1) 0%, rgba(118,75,162,0.1) 100%)}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,segoe ui,Roboto,Oxygen,Ubuntu,sans-serif;line-height:1.6;color:var(--text);background:var(--white)}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.2;margin-bottom:1rem}h1{font-size:3rem}h2{font-size:2.5rem}h3{font-size:1.75rem}h4{font-size:1.25rem}p{margin-bottom:1rem}a{color:var(--primary);text-decoration:none;transition:color .2s}a:hover{color:var(--primary-dark)}.container{max-width:1200px;margin:0 auto;padding:0 20px}.site-header{position:fixed;top:0;left:0;right:0;background:var(--white);box-shadow:0 2px 10px rgba(0,0,0,.1);z-index:1000;padding:15px 0}.site-header .container{display:flex;justify-content:space-between;align-items:center}.logo{font-size:1.75rem;font-weight:800;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.main-nav{display:flex;align-items:center;gap:30px}.main-nav a{color:var(--text);font-weight:500;transition:color .2s}.main-nav a:hover{color:var(--primary)}.btn{display:inline-block;padding:12px 28px;border-radius:30px;font-weight:600;text-align:center;transition:all .3s;cursor:pointer;border:none}.btn-primary{background:var(--gradient);color:var(--white)}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(102,126,234,.4);color:var(--white)}.btn-outline{border:2px solid var(--primary);color:var(--primary);background:0 0}.btn-outline:hover{background:var(--primary);color:var(--white)}.btn-large{padding:16px 40px;font-size:1.1rem}.hero{padding:160px 0 100px;background:var(--gradient-light);position:relative;overflow:hidden}.hero::before{content:'';position:absolute;top:-50%;right:-20%;width:70%;height:200%;background:var(--gradient);opacity:.05;border-radius:50%;transform:rotate(-15deg)}.hero .container{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;position:relative}.hero-content h1{font-size:3.5rem;margin-bottom:1.5rem;line-height:1.1}.hero-content h1 span{background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-content p{font-size:1.25rem;color:var(--text-light);margin-bottom:2rem}.hero-buttons{display:flex;gap:15px;flex-wrap:wrap}.hero-image{position:relative}.hero-image img{width:100%;border-radius:20px;box-shadow:0 25px 50px rgba(0,0,0,.15)}.stats-bar{background:var(--gradient);padding:40px 0;color:var(--white)}.stats-bar .container{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center}.stat-item h3{font-size:2.5rem;margin-bottom:.5rem}.stat-item p{opacity:.9;margin:0}.features{padding:100px 0}.section-header{text-align:center;max-width:700px;margin:0 auto 60px}.section-header h2{margin-bottom:1rem}.section-header p{font-size:1.2rem;color:var(--text-light)}.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px}.feature-card{background:var(--white);padding:40px;border-radius:20px;box-shadow:0 10px 40px rgba(0,0,0,8%);transition:transform .3s,box-shadow .3s}.feature-card:hover{transform:translateY(-5px);box-shadow:0 20px 50px rgba(0,0,0,.12)}.feature-icon{width:70px;height:70px;background:var(--gradient-light);border-radius:20px;display:flex;align-items:center;justify-content:center;font-size:2rem;margin-bottom:25px}.feature-card h3{margin-bottom:15px}.feature-card p{color:var(--text-light);margin:0}.screenshot-section{padding:100px 0;background:var(--bg)}.screenshot-section:nth-child(even){background:var(--white)}.screenshot-section .container{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}.screenshot-section:nth-child(even) .container{direction:rtl}.screenshot-section:nth-child(even) .container>*{direction:ltr}.screenshot-content h2{margin-bottom:1.5rem}.screenshot-content p{font-size:1.1rem;color:var(--text-light);margin-bottom:1.5rem}.screenshot-content ul{list-style:none;margin-bottom:2rem}.screenshot-content ul li{padding:10px 0;padding-left:35px;position:relative;color:var(--text-light)}.screenshot-content ul li::before{content:'✓';position:absolute;left:0;color:var(--accent);font-weight:700;font-size:1.2rem}.screenshot-image img{width:100%;border-radius:15px;box-shadow:0 20px 50px rgba(0,0,0,.15)}.teachers{padding:100px 0;background:var(--gradient);color:var(--white)}.teachers .section-header p{color:rgba(255,255,255,.9)}.teachers-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}.teacher-benefit{background:rgba(255,255,255,.1);padding:35px;border-radius:20px;backdrop-filter:blur(10px)}.teacher-benefit h3{margin-bottom:15px}.teacher-benefit p{opacity:.9;margin:0}.schools{padding:100px 0}.schools-content{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}.school-features{display:grid;gap:25px}.school-feature{display:flex;gap:20px}.school-feature-icon{width:50px;height:50px;background:var(--gradient);border-radius:15px;display:flex;align-items:center;justify-content:center;color:var(--white);font-size:1.5rem;flex-shrink:0}.school-feature h4{margin-bottom:5px}.school-feature p{color:var(--text-light);margin:0;font-size:.95rem}.testimonials{padding:100px 0;background:var(--bg)}.testimonials-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}.testimonial-card{background:var(--white);padding:35px;border-radius:20px;box-shadow:0 10px 40px rgba(0,0,0,5%)}.testimonial-card p{font-style:italic;font-size:1.1rem;margin-bottom:20px}.testimonial-author{display:flex;align-items:center;gap:15px}.testimonial-author img{width:50px;height:50px;border-radius:50%;background:var(--gradient)}.testimonial-author strong{display:block}.testimonial-author span{color:var(--text-light);font-size:.9rem}.pricing{padding:100px 0}.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;max-width:1e3px;margin:0 auto}.pricing-card{background:var(--white);padding:40px;border-radius:20px;box-shadow:0 10px 40px rgba(0,0,0,8%);text-align:center;position:relative}.pricing-card.featured{background:var(--gradient);color:var(--white);transform:scale(1.05)}.pricing-card.featured .pricing-price{color:var(--white)}.pricing-card.featured ul li{color:rgba(255,255,255,.9)}.pricing-card.featured .btn-outline{border-color:var(--white);color:var(--white)}.pricing-card.featured .btn-outline:hover{background:var(--white);color:var(--primary)}.pricing-badge{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--accent);color:var(--white);padding:5px 20px;border-radius:20px;font-size:.85rem;font-weight:600}.pricing-name{font-size:1.5rem;margin-bottom:10px}.pricing-price{font-size:3rem;font-weight:800;color:var(--primary);margin-bottom:5px}.pricing-price span{font-size:1rem;font-weight:400}.pricing-desc{color:var(--text-light);margin-bottom:30px}.pricing-card ul{list-style:none;text-align:left;margin-bottom:30px}.pricing-card ul li{padding:10px 0;border-bottom:1px solid rgba(0,0,0,5%);padding-left:30px;position:relative}.pricing-card ul li::before{content:'✓';position:absolute;left:0;color:var(--accent);font-weight:700}.pricing-card.featured ul li{border-color:rgba(255,255,255,.2)}.pricing-card.featured ul li::before{color:var(--white)}.cta{padding:100px 0;background:var(--gradient);color:var(--white);text-align:center}.cta h2{font-size:2.75rem;margin-bottom:1.5rem}.cta p{font-size:1.25rem;opacity:.9;margin-bottom:2rem;max-width:600px;margin-left:auto;margin-right:auto}.cta .btn-primary{background:var(--white);color:var(--primary)}.cta .btn-primary:hover{box-shadow:0 8px 25px rgba(0,0,0,.3)}.site-footer{background:#1a1a2e;color:var(--white);padding:80px 0 30px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:60px;margin-bottom:60px}.footer-brand .logo{margin-bottom:20px;display:inline-block}.footer-brand p{color:rgba(255,255,255,.7);margin-bottom:20px}.footer-links h4{margin-bottom:20px;font-size:1rem}.footer-links ul{list-style:none}.footer-links ul li{margin-bottom:12px}.footer-links ul li a{color:rgba(255,255,255,.7);transition:color .2s}.footer-links ul li a:hover{color:var(--white)}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:30px;text-align:center;color:rgba(255,255,255,.5)}@media(max-width:992px){h1{font-size:2.5rem}h2{font-size:2rem}.hero .container,.screenshot-section .container,.schools-content{grid-template-columns:1fr;gap:40px}.hero-content h1{font-size:2.75rem}.stats-bar .container{grid-template-columns:repeat(2,1fr)}.features-grid,.teachers-grid,.testimonials-grid{grid-template-columns:1fr}.pricing-grid{grid-template-columns:1fr}.pricing-card.featured{transform:none}.footer-grid{grid-template-columns:1fr 1fr}}@media(max-width:768px){.site-header .container{flex-direction:column;gap:15px}.main-nav{flex-wrap:wrap;justify-content:center}.hero{padding:120px 0 60px}.hero-content h1{font-size:2rem}.hero-buttons{flex-direction:column}.stats-bar .container{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;gap:40px}.screenshot-section:nth-child(even) .container{direction:ltr}}.placeholder-image{background:linear-gradient(135deg,#e0e5ec 0%,#f5f7fa 100%);border-radius:15px;display:flex;align-items:center;justify-content:center;color:var(--text-light);font-size:1rem;aspect-ratio:16/10}