:root{color:#0f172a;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#f8fafc;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-weight:400;line-height:1.5}*{box-sizing:border-box}body{color:#0f172a;background:#f8fafc;margin:0}a{color:inherit;text-decoration:none}.app-shell{min-height:100vh;position:relative;overflow-x:hidden}.page-shell{z-index:1;max-width:1100px;margin:0 auto;padding:24px 20px 80px;position:relative}.bg-spot{filter:blur(120px);opacity:.4;z-index:0;border-radius:999px;width:480px;height:480px;position:absolute}.bg-spot-a{background:#ebc042;top:-160px;right:-120px}.bg-spot-b{background:#2f3f7b;bottom:-200px;left:-120px}.nav{z-index:5;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#f8fafccc;border-bottom:1px solid #e2e8f0;position:sticky;top:0}.nav-inner{justify-content:space-between;align-items:center;max-width:1100px;margin:0 auto;padding:12px 20px;display:flex}.nav-links{gap:14px;display:flex}.nav a{color:#0f172a;font-weight:600}.nav a.active{color:#2f3f7b}.nav-cta{align-items:center;gap:8px;display:flex}.brand{align-items:center;display:flex}.nav-logo{width:auto;height:36px}.footer{color:#e2e8f0;background:#0f172a;padding:32px 0}.footer-content{justify-content:space-between;align-items:center;display:flex}.footer a{color:#cbd5e1;font-weight:600}.footer-links{gap:16px;display:flex}.hero{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));align-items:center;gap:24px;padding-top:12px;display:grid}.hero-content h1{margin:8px 0 4px;font-size:clamp(36px,6vw,48px)}.lead{margin:0 0 12px;font-size:18px}.hero-card{background:#fff;border-radius:18px;padding:20px;box-shadow:0 20px 60px #0f172a14}.hero-list{margin:12px 0;padding-left:18px;line-height:1.6}.highlight{color:#1e2d5e;background:#eef0f8;border-radius:12px;padding:12px;font-weight:600}.stack{flex-direction:column;gap:16px;display:flex}.stack.md{gap:20px}.stack.lg{gap:28px}.stack.sm{gap:12px}.row{align-items:center;display:flex}.row.space{justify-content:space-between}.row.gap{gap:12px}.row.gap-sm{gap:8px}.card{background:#fff;border:1px solid #e2e8f0;border-radius:16px;padding:18px;box-shadow:0 12px 36px #0f172a0f}.uni-card{text-align:left;cursor:pointer;border:1px solid #e2e8f0;transition:transform .15s,box-shadow .15s}.uni-card:hover{transform:translateY(-4px);box-shadow:0 16px 40px #2563eb1f}.course-card{flex-direction:column;gap:12px;display:flex}.metric{text-align:left}.placeholder{text-align:left;background:linear-gradient(135deg,#eef0f8,#f8fafc);border:1px dashed #cbd5e1}.grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;display:grid}.pill{color:#2f3f7b;letter-spacing:.3px;background:#eef0f8;border-radius:999px;align-items:center;gap:6px;padding:6px 10px;font-size:12px;font-weight:700;display:inline-flex}.pill.soft{color:#0f172a;background:#f1f5f9}.tag{color:#334155;background:#f8fafc;border:1px solid #e2e8f0;border-radius:999px;padding:6px 10px;font-size:12px;font-weight:600;display:inline-flex}.tag.tone{color:#2f3f7b;background:#eef0f8;border-color:#b8c4e8}.price{letter-spacing:-.01em;font-weight:800}.btn{cursor:pointer;color:#0f172a;background:#fff;border:1px solid #0000;border-radius:12px;padding:10px 14px;font-size:14px;font-weight:700}.btn.primary{color:#fff;background:#2f3f7b}.btn.ghost{color:#0f172a;background:#fff;border:1px solid #e2e8f0}.btn:hover{opacity:.92}.section-head{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}.muted{color:#475569;margin:4px 0}.metric-value{font-weight:800;display:block}.metric-label{color:#475569}.metrics{grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin-top:16px;display:grid}.badge{color:#2f3f7b;background:#eef0f8;border-radius:10px;padding:6px 10px;font-weight:700;display:inline-flex}.marquee{position:relative;overflow:hidden}.marquee-track{gap:16px;width:max-content;animation:30s linear infinite marquee;display:flex}.marquee-track-reverse{gap:16px;width:max-content;animation:30s linear infinite marquee-reverse;display:flex}.marquee-track:hover,.marquee-track-reverse:hover{animation-play-state:paused}.marquee-viewport{overflow:hidden;-webkit-mask-image:linear-gradient(90deg,#0000 0%,#000 10% 90%,#0000 100%);mask-image:linear-gradient(90deg,#0000 0%,#000 10% 90%,#0000 100%)}.review-card{min-width:300px;max-width:300px}.reveal{opacity:0;transition:opacity .6s,transform .6s;transform:translateY(28px)}.reveal.visible{opacity:1;transform:translateY(0)}.reveal-scale{opacity:0;transition:opacity .6s,transform .6s;transform:scale(.94)}.reveal-scale.visible{opacity:1;transform:scale(1)}.reveal-delay-1{transition-delay:50ms}.reveal-delay-2{transition-delay:.12s}.reveal-delay-3{transition-delay:.19s}.reveal-delay-4{transition-delay:.26s}.reveal-delay-5{transition-delay:.33s}@keyframes hero-fade-up{0%{opacity:0;transform:translateY(32px)}to{opacity:1;transform:translateY(0)}}.hero-anim-1,.hero-anim-2,.hero-anim-3,.hero-anim-4,.hero-anim-5{opacity:0;animation:.7s forwards hero-fade-up}.hero-anim-1{animation-delay:.1s}.hero-anim-2{animation-delay:.3s}.hero-anim-3{animation-delay:.5s}.hero-anim-4{animation-delay:.7s}.hero-anim-5{animation-delay:.9s}@keyframes marquee{0%{transform:translate(0)}to{transform:translate(-50%)}}@keyframes marquee-reverse{0%{transform:translate(-50%)}to{transform:translate(0)}}@keyframes purchase-result-pop{0%{opacity:0;transform:scale(0)}55%{opacity:1;transform:scale(1.2)}to{opacity:1;transform:scale(1)}}@keyframes purchase-result-float{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}.auth{place-items:center;min-height:70vh;display:grid}.auth-card{width:100%;max-width:420px}.field{flex-direction:column;gap:6px;font-weight:600;display:flex}.field input{background:#f8fafc;border:1px solid #e2e8f0;border-radius:12px;padding:12px}.field input:focus{border-color:#2f3f7b;outline:2px solid #b8c4e8}.auth-foot{margin:6px 0 0}.link{color:#2f3f7b;font-weight:700;text-decoration:none}.profile-card{flex-direction:column;gap:12px;display:flex}.profile-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;display:grid}.cart-row{border-bottom:1px solid #e2e8f0;justify-content:space-between;align-items:center;padding:10px 0;display:flex}.cart-title{margin:0;font-weight:700}.cart-total{justify-content:space-between;padding:10px 0;font-size:16px;display:flex}.lectures ul{margin:8px 0 0;padding-left:18px;line-height:1.6}@media (max-width:640px){.nav-links{display:none}.nav-inner{gap:10px}}.credits-energy-stream{background-color:#0000;background-image:radial-gradient(circle at 20% 30%,#ffffff26 0%,#0000 50%),radial-gradient(circle at 80% 70%,#2563eb66 0%,#0000 60%),linear-gradient(110deg,#0000 40%,#ffffff14 45%,#ffffff26 50%,#ffffff14 55%,#0000 60%);background-position:0 0,0 0,0 0;background-repeat:repeat,repeat,repeat;background-size:200% 200%;background-attachment:scroll,scroll,scroll;background-origin:padding-box,padding-box,padding-box;background-clip:border-box,border-box,border-box}.credits-hero-integrated-bg{background:linear-gradient(#2f3f7b 0%,#1e2d5e 60%,#f6f6f8 100%)}.dark .credits-hero-integrated-bg{background:linear-gradient(#0f172a 0%,#1e293b 60%,#101622 100%)}.credits-hide-scrollbar::-webkit-scrollbar{display:none}.credits-hide-scrollbar{-ms-overflow-style:none;scrollbar-width:none}.credits-chapter-card{scroll-snap-align:center;flex:0 0 85%}@media (min-width:768px){.credits-chapter-card{flex:0 0 380px}}.credits-custom-glyph{justify-content:center;align-items:center;display:flex;position:relative}.credits-custom-glyph:after{content:"";border:1px dashed #2563eb4d;border-radius:50%;width:140%;height:140%;transition:all .5s;position:absolute}.group:hover .credits-custom-glyph:after{border-color:#fff6;transform:rotate(45deg)}.group.bg-primary .credits-custom-glyph:after{border-color:#ffffff4d}.group.bg-primary:hover .credits-custom-glyph:after{border-color:#ffffff80}@keyframes skeleton-shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.skeleton{background:linear-gradient(90deg,#e2e8f0 0%,#f1f5f9 50%,#e2e8f0 100%) 0 0/200% 100%;border-radius:.5rem;animation:1.5s ease-in-out infinite skeleton-shimmer}.dark .skeleton{background:linear-gradient(90deg,#334155 0%,#475569 50%,#334155 100%) 0 0/200% 100%}.skeleton-delay-0{animation-delay:0s}.skeleton-delay-1{animation-delay:80ms}.skeleton-delay-2{animation-delay:.16s}.skeleton-delay-3{animation-delay:.24s}.skeleton-delay-4{animation-delay:.32s}.skeleton-delay-5{animation-delay:.4s}.skeleton-delay-6{animation-delay:.48s}.skeleton-delay-7{animation-delay:.56s}.skeleton-delay-8{animation-delay:.64s}.skeleton-delay-9{animation-delay:.72s}.skeleton-delay-10{animation-delay:.8s}.skeleton-delay-11{animation-delay:.88s}.skeleton-delay-12{animation-delay:.96s}@keyframes fade-in-up{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in-up{animation:.4s ease-out forwards fade-in-up}.offer-carousel{scroll-snap-type:x mandatory;scroll-behavior:smooth;-webkit-overflow-scrolling:touch;scrollbar-width:none;-ms-overflow-style:none}.offer-carousel::-webkit-scrollbar{display:none}.offer-carousel-card{scroll-snap-align:center;scroll-snap-stop:always}.offer-carousel-card-in-view{transition:transform .4s cubic-bezier(.34,1.56,.64,1),box-shadow .4s;transform:scale(1.02);box-shadow:0 25px 50px -12px #00000026}.offer-carousel-card:not(.offer-carousel-card-in-view){opacity:.92;transition:transform .4s cubic-bezier(.34,1.56,.64,1),opacity .4s,box-shadow .4s;transform:scale(.98)}.offer-toggle-card{transition:flex .6s cubic-bezier(.25,.46,.45,.94),border-color .5s,box-shadow .5s cubic-bezier(.25,.46,.45,.94),min-width .6s cubic-bezier(.25,.46,.45,.94)}@keyframes offer-content-in{0%{opacity:0}to{opacity:1}}.offer-toggle-card-content{animation:.4s ease-out forwards offer-content-in}