:root{--bg: #FFFFFF;--bg-section: #F8FAFC;--primary: #4F46E5;--primary-light: #EEF2FF;--primary-hover: #4338CA;--primary-end: #7C3AED;--cta: lab(44 29.14 -86.22);--cta-hover: lab(39 25 -75);--heading: #0F172A;--body: #475569;--border: #E2E8F0;--success: #22C55E;--danger: #EF4444;--radius: 12px;--radius-sm: 8px;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--transition: .2s ease-in-out;--font: "Inter", system-ui, -apple-system, sans-serif}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;font-size:16px}body{font-family:var(--font);background:var(--bg);color:var(--body);line-height:1.6;min-height:100vh;display:flex;flex-direction:column}h1,h2,h3,h4,h5,h6{color:var(--heading);font-weight:700;line-height:1.3}a{color:var(--primary);text-decoration:none;transition:var(--transition)}a:hover{color:var(--primary-hover)}img{max-width:100%;display:block;border-radius:var(--radius-sm)}button{font-family:var(--font);cursor:pointer;border:none;outline:none;background:none;transition:var(--transition)}ul{list-style:none}.container{max-width:1200px;margin:0 auto;padding:0 24px}.section{padding:80px 0}.section-alt{background:var(--bg-section);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.text-center{text-align:center}.mt-2{margin-top:8px}.mt-4{margin-top:16px}.mt-8{margin-top:32px}.mb-2{margin-bottom:8px}.mb-4{margin-bottom:16px}.mb-8{margin-bottom:32px}.flex{display:flex}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-4{gap:16px}.section-title{font-size:2.2rem;margin-bottom:16px}.section-subtitle{font-size:1.1rem;color:var(--body);max-width:600px;margin:0 auto 48px}.badge{display:inline-block;padding:4px 12px;border-radius:99px;font-size:.8rem;font-weight:600}.badge-primary{background:var(--primary-light);color:var(--primary)}.badge-cta{background:color-mix(in srgb,var(--cta) 10%,white);color:var(--cta)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border-radius:var(--radius-sm);font-weight:600;font-size:.95rem}.btn-cta{background:var(--cta);color:#fff;box-shadow:var(--shadow-sm)}.btn-cta:hover{background:var(--cta-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow)}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover);color:#fff}.btn-outline{border:1px solid var(--border);color:var(--heading);background:#fff}.btn-outline:hover{border-color:var(--primary);color:var(--primary)}.btn-text{color:var(--body);padding:8px}.btn-text:hover{color:var(--primary);background:var(--bg-section)}.btn-full{width:100%}.form-group{margin-bottom:20px}.form-label{display:block;font-weight:600;color:var(--heading);margin-bottom:8px;font-size:.9rem}.form-control{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:var(--radius-sm);background:#fff;color:var(--heading);font-family:var(--font);font-size:.95rem;transition:var(--transition)}.form-control:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 3px var(--primary-light)}.form-error{color:var(--danger);font-size:.85rem;margin-top:6px;display:none}.form-group.has-error .form-control{border-color:var(--danger)}.form-group.has-error .form-error{display:block}.header{position:sticky;top:0;z-index:100;background:#ffffffb3;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border);padding:16px 0}.header .container{display:flex;align-items:center;justify-content:space-between}.logo{font-size:1.4rem;font-weight:800;color:var(--heading);display:flex;align-items:center;gap:8px}.logo span{background:linear-gradient(135deg,var(--primary),var(--primary-end));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.nav{display:flex;gap:32px;align-items:center}.nav-link{color:var(--body);font-weight:500;font-size:.95rem}.nav-link:hover{color:var(--primary)}.header-actions{display:flex;gap:16px;align-items:center}.cart-icon{position:relative;font-size:1.2rem;color:var(--heading);cursor:pointer;padding:8px}.cart-badge{position:absolute;top:0;right:0;background:var(--cta);color:#fff;font-size:.7rem;font-weight:700;width:18px;height:18px;border-radius:50%;display:flex;align-items:center;justify-content:center}.mobile-menu-btn{display:none;font-size:1.5rem;color:var(--heading)}.hero{padding:100px 0;background:var(--bg);overflow:hidden;position:relative}.hero:before{content:"";position:absolute;top:-20%;right:-10%;width:50vw;height:50vw;background:radial-gradient(circle,var(--primary-light),transparent 60%);z-index:0;pointer-events:none;opacity:.6}.hero .container{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;position:relative;z-index:1}.hero-content h1{font-size:clamp(2.5rem,5vw,3.5rem);margin-bottom:24px;line-height:1.15}.hero-content p{font-size:1.15rem;margin-bottom:32px}.hero-actions{display:flex;gap:16px}.hero-visual{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lg)}.course-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:var(--transition);display:flex;flex-direction:column}.course-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--primary-light)}.card-img{height:200px;background:var(--bg-section);position:relative}.card-img img{width:100%;height:100%;object-fit:cover;border-radius:0}.card-badge{position:absolute;top:16px;left:16px;background:#fff;padding:4px 10px;border-radius:var(--radius-sm);font-size:.8rem;font-weight:600;box-shadow:var(--shadow-sm);color:var(--heading)}.card-body{padding:32px 24px;flex:1;display:flex;flex-direction:column}.card-title{font-size:1.25rem;margin-bottom:8px}.card-desc{font-size:.95rem;margin-bottom:16px;flex:1}.card-price{display:flex;align-items:baseline;gap:12px;margin-bottom:24px}.price-current{font-size:1.5rem;font-weight:700;color:var(--heading)}.price-old{font-size:1rem;color:var(--body);text-decoration:line-through}.course-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}.course-layout{display:grid;grid-template-columns:2fr 1fr;gap:48px;align-items:start}.course-content h2{margin-top:40px;margin-bottom:16px}.course-content p{margin-bottom:16px}.course-content ul{padding-left:20px;margin-bottom:24px}.course-content li{list-style:disc;margin-bottom:8px}.course-sidebar{position:sticky;top:100px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow)}.sidebar-price{font-size:2rem;font-weight:800;color:var(--heading);margin-bottom:8px}.sidebar-features{margin:24px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:24px 0}.sidebar-features li{display:flex;gap:12px;margin-bottom:12px;font-size:.95rem}.sidebar-features li:before{content:"✓";color:var(--primary);font-weight:700}.table-cart{width:100%;border-collapse:collapse;margin-bottom:32px}.table-cart th{text-align:left;padding:16px;border-bottom:2px solid var(--border);color:var(--heading)}.table-cart td{padding:24px 16px;border-bottom:1px solid var(--border);vertical-align:middle}.cart-summary{background:var(--bg-section);border:1px solid var(--border);border-radius:var(--radius);padding:32px;max-width:400px;margin-left:auto}.summary-row{display:flex;justify-content:space-between;margin-bottom:16px;font-size:1.05rem}.summary-total{display:flex;justify-content:space-between;margin:24px 0;padding-top:24px;border-top:1px solid var(--border);font-size:1.25rem;font-weight:700;color:var(--heading)}.checkout-layout{display:grid;grid-template-columns:1.5fr 1fr;gap:48px;align-items:start}.checkout-box{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:32px;margin-bottom:32px;box-shadow:var(--shadow-sm)}.checkout-box h3{border-bottom:1px solid var(--border);padding-bottom:16px;margin-bottom:24px}.order-item{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--border);font-size:.95rem}.order-item:last-child{border:none}.auth-container{max-width:480px;margin:80px auto;padding:40px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.auth-header{text-align:center;margin-bottom:32px}.auth-header h1{font-size:1.8rem;margin-bottom:8px}.footer{background:var(--heading);color:#fff;padding:80px 0 0;margin-top:auto}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:60px;margin-bottom:60px}.footer-brand{font-size:1.6rem;font-weight:800;margin-bottom:24px}.footer-info{font-size:.95rem;color:#cbd5e1;margin-bottom:12px}.footer h4{color:#fff;margin-bottom:24px;font-size:1.1rem}.footer ul li{margin-bottom:12px}.footer a{color:#cbd5e1}.footer a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:24px 0;display:flex;justify-content:space-between;align-items:center;color:#94a3b8;font-size:.9rem}@media (max-width: 992px){.hero .container,.course-layout,.checkout-layout{grid-template-columns:1fr}.course-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr;gap:40px}}@media (max-width: 768px){.nav{display:none}.mobile-menu-btn{display:block}.course-grid{grid-template-columns:1fr}.header-actions .btn{display:none}.hero{padding:60px 0;text-align:center}.hero-actions{justify-content:center}.table-cart thead{display:none}.table-cart td{display:block;padding:12px 0;border:none}.table-cart tr{border-bottom:1px solid var(--border);padding:16px 0;display:block}}.mobile-menu-overlay{position:fixed;top:0;left:0;width:100%;height:100vh;background:#fffffffa;z-index:99;display:flex;flex-direction:column;align-items:center;justify-content:center;transform:translateY(-100%);transition:transform .3s ease}.mobile-menu-overlay.active{transform:translateY(0)}.mobile-menu-overlay .nav-link{font-size:1.5rem;margin-bottom:24px;font-weight:600;display:block}.mobile-menu-btn{cursor:pointer;display:none;background:none;border:none;font-size:1.5rem}@media (max-width: 768px){.mobile-menu-btn{display:block}}.breadcrumbs{font-size:.9rem;color:var(--body);margin-bottom:24px;display:flex;gap:8px}.breadcrumbs a{color:var(--body)}.breadcrumbs a:hover{color:var(--primary)}.breadcrumbs span{color:var(--heading);font-weight:500}.course-card{position:relative;top:0;transition:all .3s ease;border:1px solid var(--border)}.course-card:hover{top:-8px;box-shadow:0 20px 25px -5px #0000001a,0 8px 10px -6px #0000001a;border-color:var(--primary-light)}.combo-card{background:linear-gradient(to bottom,#fff,#fef2f2);border-color:#fca5a5}.check-list{list-style:none;padding-left:0!important}.check-list li{position:relative;padding-left:28px;margin-bottom:8px;list-style:none!important}.check-list li:before{content:"✓";position:absolute;left:0;top:0;color:var(--success);font-weight:800;font-size:1.1rem}.check-list.primary-check li:before{color:var(--primary)}.check-list.cta-check li:before{color:var(--cta)}