:root{--primary-color: #818cf8;--secondary-color: #34d399;--success-color: #a78bfa;--warning-color: #fbbf24;--error-color: #f87171;--background-color: #06060f;--text-primary: #f1f5f9;--text-secondary: rgba(241, 245, 249, .6);--border-color: rgba(255, 255, 255, .08);--hover-color: rgba(255, 255, 255, .05);--spacing-xs: .5rem;--spacing-sm: .75rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--font-xs: .75rem;--font-sm: .875rem;--font-md: 1rem;--font-lg: 1.125rem;--font-xl: 1.25rem;--font-2xl: 1.5rem;--font-3xl: 1.875rem;--font-4xl: 2.25rem;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 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);--radius-sm: .25rem;--radius-md: .375rem;--radius-lg: .5rem;--radius-xl: .75rem;--radius-2xl: 1rem}*{box-sizing:border-box}body{margin:0;padding:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background-color:#06060f;color:#f1f5f9;line-height:1.5;overflow-x:hidden}#root{margin:0;padding:0;width:100%}.MuiAppBar-root{border-radius:0!important;margin:0!important;left:0!important;right:0!important;width:100vw!important}.MuiToolbar-root{border-radius:0!important;margin:0!important;padding-left:16px!important;padding-right:16px!important}.MuiContainer-root{margin-left:0!important;margin-right:0!important;max-width:none!important;padding-left:16px!important;padding-right:16px!important}.page-container{min-height:100vh;background-color:var(--background-color);padding:var(--spacing-xl) 0}.responsive-padding{padding-left:var(--spacing-md);padding-right:var(--spacing-md)}@media (min-width: 600px){.responsive-padding{padding-left:var(--spacing-2xl);padding-right:var(--spacing-2xl)}}@media (min-width: 900px){.responsive-padding{padding-left:var(--spacing-xl);padding-right:var(--spacing-xl)}}@media (min-width: 1200px){.responsive-padding{padding-left:calc(var(--spacing-xl) * 1.5);padding-right:calc(var(--spacing-xl) * 1.5)}}@media (min-width: 1536px){.responsive-padding{padding-left:calc(var(--spacing-xl) * 2);padding-right:calc(var(--spacing-xl) * 2)}}.page-header{text-align:center;margin-bottom:var(--spacing-2xl)}.page-title{font-size:var(--font-4xl);font-weight:700;margin-bottom:var(--spacing-md);color:var(--text-primary)}@media (max-width: 768px){.page-title{font-size:var(--font-3xl)}}@media (max-width: 480px){.page-title{font-size:var(--font-2xl)}}.page-subtitle{font-size:var(--font-xl);color:var(--text-secondary);max-width:600px;margin:0 auto}@media (max-width: 768px){.page-subtitle{font-size:var(--font-lg)}}.card{background:#ffffff0a;border-radius:var(--radius-xl);box-shadow:0 8px 32px #0000004d;transition:all .3s ease;border:1px solid rgba(255,255,255,.08);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.card:hover{box-shadow:0 12px 40px #6366f133;transform:translateY(-2px);border-color:#6366f140}.card-content{padding:var(--spacing-xl)}@media (max-width: 768px){.card-content{padding:var(--spacing-lg)}}.btn-primary{background-color:var(--primary-color);color:#fff;border:none;border-radius:var(--radius-lg);padding:var(--spacing-md) var(--spacing-xl);font-weight:600;cursor:pointer;transition:all .2s ease}.btn-primary:hover{background-color:#5856eb;transform:translateY(-1px)}.btn-secondary{background-color:transparent;color:var(--primary-color);border:2px solid var(--primary-color);border-radius:var(--radius-lg);padding:var(--spacing-md) var(--spacing-xl);font-weight:600;cursor:pointer;transition:all .2s ease}.btn-secondary:hover{background-color:var(--primary-color);color:#fff}.grid{display:grid;gap:var(--spacing-xl)}.grid-1{grid-template-columns:1fr}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}@media (max-width: 1024px){.grid-3{grid-template-columns:repeat(2,1fr)}}@media (max-width: 768px){.grid-2,.grid-3{grid-template-columns:1fr}.grid{gap:var(--spacing-lg)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideInLeft{0%{opacity:0;transform:translate(-20px)}to{opacity:1;transform:translate(0)}}.animate-fade-in-up{animation:fadeInUp .6s ease-out}.animate-fade-in{animation:fadeIn .6s ease-out}.animate-slide-in-left{animation:slideInLeft .4s ease-out}.premium-navbar{background:linear-gradient(135deg,#fffffff2,#f8fafcf2);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid rgba(99,102,241,.1);box-shadow:0 4px 32px #0000000f;padding:12px 0;position:sticky;top:0;z-index:1000;transition:all .3s ease}.premium-navbar-container{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:0 var(--spacing-xl)}.premium-navbar-brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--text-primary);font-weight:700;font-size:1.25rem;transition:all .3s ease}.premium-navbar-brand:hover{color:var(--primary-color);transform:translate(2px)}.premium-navbar-brand-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--primary-color) 0%,#4f46e5 100%);border-radius:12px;display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:0 6px 20px #6366f14d}.premium-navbar-menu{display:flex;align-items:center;gap:8px;list-style:none;margin:0;padding:0}.premium-navbar-item{position:relative}.premium-navbar-link{display:flex;align-items:center;gap:8px;padding:10px 16px;border-radius:12px;text-decoration:none;color:var(--text-secondary);font-weight:500;font-size:.9rem;transition:all .3s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden}.premium-navbar-link:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,#6366f10d,#8b5cf60d);opacity:0;transition:opacity .3s ease}.premium-navbar-link:hover{color:var(--primary-color);background:#6366f114;transform:translateY(-2px)}.premium-navbar-link:hover:before{opacity:1}.premium-navbar-link.active{color:var(--primary-color);background:linear-gradient(135deg,#6366f11a,#8b5cf614);font-weight:600;box-shadow:0 4px 12px #6366f126}.premium-navbar-link-icon{width:20px;height:20px;display:flex;align-items:center;justify-content:center}.premium-navbar-actions{display:flex;align-items:center;gap:12px}.premium-navbar-btn{background:linear-gradient(135deg,var(--primary-color) 0%,#4f46e5 100%);color:#fff;border:none;border-radius:12px;padding:10px 20px;font-weight:600;font-size:.875rem;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 16px #6366f140;display:flex;align-items:center;gap:8px;text-decoration:none}.premium-navbar-btn:hover{transform:translateY(-2px);box-shadow:0 6px 24px #6366f159}.premium-navbar-toggle{display:none;background:none;border:none;padding:8px;border-radius:8px;color:var(--text-secondary);cursor:pointer;transition:all .3s ease}.premium-navbar-toggle:hover{background:#6366f11a;color:var(--primary-color)}@media (max-width: 768px){.premium-navbar-container{padding:0 var(--spacing-lg)}.premium-navbar-menu{display:none;position:absolute;top:100%;left:0;right:0;background:linear-gradient(135deg,#fffffffa,#f8fafcfa);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-top:1px solid rgba(99,102,241,.1);box-shadow:0 8px 32px #0000001a;flex-direction:column;padding:var(--spacing-lg);gap:4px}.premium-navbar-menu.open{display:flex}.premium-navbar-link{width:100%;justify-content:flex-start;padding:12px 16px}.premium-navbar-toggle{display:block}.premium-navbar-actions{gap:8px}.premium-navbar-btn{padding:8px 16px;font-size:.8rem}}.text-center{text-align:center}.text-left{text-align:left}.text-right{text-align:right}.mb-sm{margin-bottom:var(--spacing-sm)}.mb-md{margin-bottom:var(--spacing-md)}.mb-lg{margin-bottom:var(--spacing-lg)}.mb-xl{margin-bottom:var(--spacing-xl)}.mb-2xl{margin-bottom:var(--spacing-2xl)}.mt-sm{margin-top:var(--spacing-sm)}.mt-md{margin-top:var(--spacing-md)}.mt-lg{margin-top:var(--spacing-lg)}.mt-xl{margin-top:var(--spacing-xl)}.mt-2xl{margin-top:var(--spacing-2xl)}.p-sm{padding:var(--spacing-sm)}.p-md{padding:var(--spacing-md)}.p-lg{padding:var(--spacing-lg)}.p-xl{padding:var(--spacing-xl)}.flex{display:flex}.flex-col{flex-direction:column}.flex-wrap{flex-wrap:wrap}.flex-1{flex:1}.items-start{align-items:flex-start}.items-center{align-items:center}.items-end{align-items:flex-end}.justify-start{justify-content:flex-start}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.justify-end{justify-content:flex-end}.gap-xs{gap:var(--spacing-xs)}.gap-sm{gap:var(--spacing-sm)}.gap-md{gap:var(--spacing-md)}.gap-lg{gap:var(--spacing-lg)}.gap-xl{gap:var(--spacing-xl)}.w-full{width:100%}.max-w-full{max-width:100%}.overflow-hidden{overflow:hidden}.chip{display:inline-flex;align-items:center;padding:var(--spacing-xs) var(--spacing-md);border-radius:var(--radius-2xl);font-size:var(--font-sm);font-weight:600}.chip-beginner{background-color:#dbeafe;color:#1e40af}.chip-intermediate{background-color:#fef3c7;color:#92400e}.chip-advanced{background-color:#fde68a;color:#d97706}.chip-expert{background-color:#f87171;color:#dc2626}.chip-success{background-color:#dcfce7;color:#166534}.chip-primary{background-color:#e0e7ff;color:#3730a3}.progress-stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--spacing-lg);margin-bottom:var(--spacing-2xl)}.progress-stat-card{background:#ffffff0a;border-radius:var(--radius-xl);padding:var(--spacing-xl);text-align:center;box-shadow:0 8px 32px #00000040;border:1px solid rgba(255,255,255,.08);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);transition:transform .2s ease}.progress-stat-card:hover{transform:translateY(-4px)}.progress-stat-number{font-size:var(--font-4xl);font-weight:700;margin-bottom:var(--spacing-sm)}.progress-stat-label{color:var(--text-secondary);font-size:var(--font-md)}.progress-chart-container{background:#ffffff0a;border-radius:var(--radius-xl);padding:var(--spacing-xl);margin-bottom:var(--spacing-xl);box-shadow:0 8px 32px #00000040;border:1px solid rgba(255,255,255,.08);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.achievements-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--spacing-lg)}.achievement-card{position:relative}.achievement-card.unlocked{border:2px solid var(--success-color)}.achievement-card.locked{opacity:.6;filter:grayscale(50%)}.achievement-icon{width:48px;height:48px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin-bottom:var(--spacing-md)}.achievement-icon.gold{background:linear-gradient(135deg,gold,#ffed4e)}.achievement-icon.silver{background:linear-gradient(135deg,silver,#e5e5e5)}.achievement-icon.bronze{background:linear-gradient(135deg,#cd7f32,#daa520)}@media (max-width: 768px){.progress-stats-grid{grid-template-columns:repeat(2,1fr);gap:var(--spacing-md);text-align:center}.progress-stat-card{text-align:center}.achievements-grid{grid-template-columns:1fr}.progress-stat-number{font-size:var(--font-3xl)}}@keyframes shimmer{0%{transform:translate(-100%)}to{transform:translate(100%)}}.home-container{min-height:100vh;background:#06060f;color:#f1f5f9}.h-hero{position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;overflow:hidden;padding:7rem 2rem 5rem}.h-hero-bg{position:absolute;inset:0;z-index:0}.h-blob{position:absolute;border-radius:50%;filter:blur(90px);will-change:transform;animation:hBlobFloat ease-in-out infinite}.h-blob-1{width:650px;height:650px;background:radial-gradient(circle at 40% 40%,rgba(124,58,237,.55) 0%,transparent 70%);top:-180px;left:-120px;animation-duration:22s}.h-blob-2{width:550px;height:550px;background:radial-gradient(circle at 60% 60%,rgba(236,72,153,.45) 0%,transparent 70%);bottom:-120px;right:-100px;animation-duration:28s;animation-direction:reverse}.h-blob-3{width:420px;height:420px;background:radial-gradient(circle at 50% 50%,rgba(6,182,212,.35) 0%,transparent 70%);top:45%;left:50%;transform:translate(-50%,-50%);animation-duration:34s;animation-delay:-10s}@keyframes hBlobFloat{0%,to{transform:translate(0) scale(1)}25%{transform:translate(20px,-25px) scale(1.04)}50%{transform:translate(-15px,15px) scale(.97)}75%{transform:translate(10px,20px) scale(1.02)}}.h-grid-overlay{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);background-size:64px 64px;-webkit-mask-image:radial-gradient(ellipse 85% 70% at 50% 50%,black 0%,transparent 100%);mask-image:radial-gradient(ellipse 85% 70% at 50% 50%,black 0%,transparent 100%)}.h-cyrillic-layer{position:absolute;inset:0;z-index:1;pointer-events:none;overflow:hidden}.h-cyr-char{position:absolute;font-weight:900;color:#ffffff12;font-family:Georgia,serif;-webkit-user-select:none;user-select:none;line-height:1}.h-hero-content{position:relative;z-index:2;text-align:center;max-width:880px;margin:0 auto}.h-badge{display:inline-flex;align-items:center;gap:7px;background:#7c3aed24;border:1px solid rgba(167,139,250,.3);color:#c4b5fd;font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:7px 16px;border-radius:100px;margin-bottom:2rem;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.h-title{font-size:clamp(3.25rem,9vw,6rem);font-weight:900;line-height:1.04;letter-spacing:-.04em;color:#f8fafc;margin:0 0 1.5rem;overflow:visible}.h-title-gradient{background:linear-gradient(135deg,#c4b5fd,#ec4899 45%,#38bdf8);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;display:inline-block;padding-bottom:.15em;overflow:visible;position:relative;z-index:3}.h-subtitle{font-size:clamp(1rem,2.5vw,1.2rem);color:#f1f5f999;line-height:1.75;max-width:580px;margin:0 auto 2.75rem}.h-actions{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;margin-bottom:2rem}.h-btn-primary.MuiButton-root{background:linear-gradient(135deg,#7c3aed,#4f46e5)!important;color:#fff!important;padding:.9rem 2.2rem!important;border-radius:14px!important;font-size:1rem!important;font-weight:700!important;text-transform:none!important;border:none!important;box-shadow:0 0 #7c3aed80,0 8px 30px #7c3aed59!important;transition:all .25s ease!important;letter-spacing:.01em!important}.h-btn-primary.MuiButton-root:hover{box-shadow:0 0 0 4px #7c3aed33,0 12px 40px #7c3aed80!important;background:linear-gradient(135deg,#8b5cf6,#6366f1)!important}.h-btn-lg.MuiButton-root{padding:1.1rem 2.75rem!important;font-size:1.1rem!important}.h-btn-ghost.MuiButton-root{background:transparent!important;color:#f1f5f9cc!important;padding:.9rem 2rem!important;border-radius:14px!important;font-size:1rem!important;font-weight:600!important;text-transform:none!important;border:1px solid rgba(255,255,255,.12)!important;-webkit-backdrop-filter:blur(8px)!important;backdrop-filter:blur(8px)!important;transition:all .25s ease!important;letter-spacing:.01em!important}.h-btn-ghost.MuiButton-root:hover{background:#ffffff12!important;border-color:#ffffff40!important}.h-trust-row{display:flex;gap:1.25rem;justify-content:center;flex-wrap:wrap}.h-trust-badge{display:inline-flex;align-items:center;gap:5px;font-size:.78rem;color:#f1f5f961;font-weight:500}.h-stats{padding:3.5rem 2rem;background:#ffffff06;border-top:1px solid rgba(255,255,255,.07);border-bottom:1px solid rgba(255,255,255,.07)}.h-stats-inner{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem}.h-stat-card{background:#ffffff0a;border:1px solid rgba(255,255,255,.08);border-radius:20px;padding:1.75rem 1.25rem;text-align:center;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);transition:all .3s cubic-bezier(.4,0,.2,1);cursor:default}.h-stat-card:hover{background:#ffffff12;transform:translateY(-6px);border-color:#ffffff24;box-shadow:0 16px 50px var(--stat-glow, transparent)}.h-stat-icon{margin-bottom:.75rem;display:flex;justify-content:center}.h-stat-value{font-size:2.4rem;font-weight:800;letter-spacing:-.04em;line-height:1;margin-bottom:.4rem}.h-stat-label{font-size:.72rem;text-transform:uppercase;letter-spacing:.09em;color:#f1f5f961;font-weight:700}.h-features{padding:7rem 2rem;max-width:1200px;margin:0 auto}.h-section-head{text-align:center;margin-bottom:4.5rem}.h-eyebrow{display:inline-flex;align-items:center;gap:7px;color:#c4b5fd;font-size:.73rem;font-weight:800;text-transform:uppercase;letter-spacing:.1em;margin-bottom:1rem}.h-section-title{font-size:clamp(2rem,5vw,3.25rem);font-weight:900;color:#f8fafc;letter-spacing:-.04em;line-height:1.12;margin:0 0 .85rem}.h-section-sub{font-size:1.05rem;color:#f1f5f97a;margin:0}.h-gradient-text{background:linear-gradient(135deg,#c4b5fd,#ec4899);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;display:inline}.h-features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}.h-feat-card{position:relative;background:#ffffff0a;border:1px solid rgba(255,255,255,.08);border-radius:24px;padding:0 2rem 2.5rem;cursor:pointer;overflow:hidden;transition:background .3s ease,border-color .3s ease,box-shadow .3s ease}.h-feat-card:hover{background:#fff1;border-color:#ffffff24;box-shadow:0 24px 60px #00000059,0 0 0 1px #ffffff0d,0 0 70px -15px var(--feat-color, rgba(124, 58, 237, .4))}.h-feat-top-bar{height:4px;width:calc(100% + 4rem);margin:0 -2rem 2.25rem;opacity:.85;transition:opacity .3s ease}.h-feat-card:hover .h-feat-top-bar{opacity:1}.h-feat-tag{display:inline-block;background:#ffffff12;border:1px solid rgba(255,255,255,.1);color:#f1f5f98c;font-size:.68rem;font-weight:800;text-transform:uppercase;letter-spacing:.09em;padding:4px 10px;border-radius:100px;margin-bottom:1.5rem}.h-feat-icon{width:60px;height:60px;border-radius:16px;display:flex;align-items:center;justify-content:center;color:#fff;margin-bottom:1.5rem;box-shadow:0 8px 28px #0000004d}.h-feat-title{font-size:1.3rem;font-weight:800;color:#f8fafc;margin:0 0 .75rem;letter-spacing:-.025em}.h-feat-desc{font-size:.93rem;color:#f1f5f985;line-height:1.7;margin:0 0 1.75rem}.h-feat-link{display:flex;align-items:center;gap:6px;font-size:.88rem;font-weight:700;transition:gap .2s ease;letter-spacing:.01em}.h-feat-card:hover .h-feat-link{gap:10px}.h-why{padding:7rem 2rem;background:#ffffff06;border-top:1px solid rgba(255,255,255,.07);border-bottom:1px solid rgba(255,255,255,.07)}.h-why-inner{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:5rem;align-items:center}.h-why-desc{font-size:1rem;color:#f1f5f991;line-height:1.75;margin:1.5rem 0 2.25rem}.h-why-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.9rem}.h-why-list li{display:flex;align-items:center;gap:.85rem;font-size:.93rem;color:#f1f5f9b8;font-weight:500;line-height:1.4}.h-why-icon{display:flex;align-items:center;justify-content:center;width:34px;height:34px;background:#7c3aed21;border:1px solid rgba(124,58,237,.22);border-radius:9px;color:#c4b5fd;flex-shrink:0}.h-why-visual{display:flex;flex-direction:column;gap:1rem}.h-mini-card{background:#ffffff0b;border:1px solid rgba(255,255,255,.09);border-left:3px solid var(--mini-color, #7c3aed);border-radius:16px;padding:1.25rem 1.5rem;display:flex;align-items:center;gap:1rem;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);transition:all .3s cubic-bezier(.4,0,.2,1)}.h-mini-card:hover{background:#ffffff14;transform:translate(8px);border-left-color:var(--mini-color, #7c3aed)}.h-mini-label{font-size:.7rem;text-transform:uppercase;letter-spacing:.08em;color:#f1f5f961;font-weight:700;margin-bottom:3px}.h-mini-value{font-size:1.3rem;font-weight:800;letter-spacing:-.03em}.h-cta{padding:9rem 2rem;position:relative;overflow:hidden;text-align:center}.h-cta-bg{position:absolute;inset:0;z-index:0}.h-cta-blob{position:absolute;border-radius:50%;filter:blur(80px)}.h-cta-blob-1{width:520px;height:520px;background:radial-gradient(circle,rgba(124,58,237,.45) 0%,transparent 70%);top:-160px;left:-80px;animation:hBlobFloat 26s ease-in-out infinite}.h-cta-blob-2{width:440px;height:440px;background:radial-gradient(circle,rgba(236,72,153,.4) 0%,transparent 70%);bottom:-140px;right:-60px;animation:hBlobFloat 32s ease-in-out infinite reverse}.h-cta-content{position:relative;z-index:1;max-width:700px;margin:0 auto}.h-cta-title{font-size:clamp(2.25rem,6vw,3.75rem);font-weight:900;color:#f8fafc;letter-spacing:-.04em;line-height:1.08;margin:0 0 1.25rem}.h-cta-desc{font-size:1.1rem;color:#f1f5f994;line-height:1.7;margin:0 auto 2.75rem;max-width:480px}@media (max-width: 1024px){.h-features-grid,.h-stats-inner{grid-template-columns:repeat(2,1fr)}.h-why-inner{grid-template-columns:1fr;gap:3rem}}@media (max-width: 768px){.h-hero{padding:6rem 1.5rem 4.5rem}.h-features{padding:5rem 1.5rem}.h-features-grid{grid-template-columns:1fr}.h-why{padding:5rem 1.5rem}.h-cta{padding:6rem 1.5rem}.h-actions{flex-direction:column;align-items:stretch;max-width:360px;margin-left:auto;margin-right:auto;margin-bottom:2rem}.h-btn-primary.MuiButton-root,.h-btn-ghost.MuiButton-root{width:100%!important;justify-content:center!important}}@media (max-width: 480px){.h-stats-inner{grid-template-columns:repeat(2,1fr);gap:1rem}.h-stat-card{padding:1.25rem .9rem}.h-stat-value{font-size:1.85rem}}.vocabulary-tabs .MuiTab-root{font-weight:600;text-transform:none;font-size:1.1rem;padding:20px 32px;min-height:auto;color:#f1f5f98c;transition:all .3s 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#6366f166}.grammar-progress-title-premium{font-weight:700!important;color:#f1f5f9!important;margin-bottom:4px!important}.grammar-progress-subtitle-premium{color:#f1f5f98c!important;font-weight:400!important}.grammar-progress-stats{text-align:right}.grammar-progress-number{font-weight:800!important;background:linear-gradient(135deg,#818cf8,#6366f1);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1!important;margin-bottom:4px!important}.grammar-progress-text{color:#f1f5f980!important;font-weight:500!important;text-transform:uppercase;letter-spacing:.5px}.grammar-progress-details{display:flex;align-items:center;gap:24px;margin-top:0}.grammar-progress-metric{display:flex;flex-direction:column;align-items:center;gap:4px;min-width:80px}.grammar-progress-metric .metric-number{font-size:1.5rem;font-weight:700;color:#f1f5f9}.grammar-progress-metric .metric-label{font-size:.75rem;color:#f1f5f980;text-transform:uppercase;letter-spacing:.5px;font-weight:500}.grammar-progress-bar-container{flex:1;padding:0 16px;max-width:100%}.grammar-progress-bar-premium{height:8px;border-radius:12px;background:#ffffff14;overflow:hidden;margin-top:8px}.grammar-progress-bar-fill{height:100%;background:linear-gradient(90deg,#6366f1,#818cf8);border-radius:12px;transition:width .3s ease}.grammar-progress-paper{padding:1.5rem;margin-bottom:2rem;background:#ffffff0a!important;border:1px solid rgba(255,255,255,.08)!important;box-shadow:0 4px 16px #0003!important}.grammar-progress-container{display:flex;align-items:center;gap:1.5rem}.grammar-progress-title{font-weight:600;margin-bottom:.5rem;color:#f1f5f9}.grammar-progress-subtitle{color:#f1f5f98c;margin-bottom:1rem}.grammar-stats-box{display:flex;gap:2rem;justify-content:center}.grammar-stat-box{text-align:center}.grammar-stat-number{font-size:2rem;font-weight:700;line-height:1;color:#f1f5f9}.grammar-stat-number.mastered{color:#34d399}.grammar-stat-number.progress{color:#fbbf24}.grammar-stat-label{font-size:.875rem;color:#f1f5f980;margin-top:.25rem}.grammar-category-tabs{border-bottom:1px solid rgba(255,255,255,.08);margin-bottom:2rem}.grammar-category-tabs .MuiTab-root{color:#f1f5f98c!important;text-transform:none;font-weight:500}.grammar-category-tabs .Mui-selected{color:#818cf8!important}.grammar-category-tabs 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rgba(255,255,255,.15)}.grammar-rule-title{font-size:1.25rem;font-weight:700;margin-bottom:.75rem;color:#f1f5f9}.grammar-rule-description{color:#f1f5f999;line-height:1.6;margin-bottom:0}.grammar-exercise-info{text-align:center;min-width:120px;padding:1rem;background:#6366f11a;border-radius:16px;border:1px solid rgba(99,102,241,.2);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.grammar-exercise-number{font-size:1.75rem;font-weight:800;background:linear-gradient(135deg,#818cf8,#6366f1);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1;margin-bottom:.25rem}.grammar-exercise-label{font-size:.75rem;color:#f1f5f980;font-weight:500;text-transform:uppercase;letter-spacing:.5px}.grammar-rule-meta{display:flex;gap:var(--spacing-sm);flex-wrap:wrap;align-items:center;margin-bottom:var(--spacing-lg)}.grammar-exercise-count{text-align:center;min-width:100px;margin-left:var(--spacing-md)}.grammar-accordion{margin-bottom:1rem;box-shadow:none!important;border:1px solid rgba(255,255,255,.07)!important;border-radius:16px!important;background:#ffffff08!important;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);overflow:hidden}.grammar-accordion-summary{background:#6366f114!important;border-radius:16px 16px 0 0;font-weight:600;padding:1rem 1.5rem;border-bottom:1px solid rgba(255,255,255,.07)}.grammar-accordion-summary .MuiTypography-root{color:#f1f5f9d9!important}.grammar-accordion-summary svg{color:#f1f5f999!important}.grammar-accordion-details{padding:2rem;background:#ffffff05!important}.grammar-examples-section{margin:1.5rem 0}.grammar-examples-title{display:flex;align-items:center;gap:.5rem;font-size:1.125rem;font-weight:600;margin-bottom:1rem;color:#f1f5f9}.grammar-example-card{background:#ffffff0a;border-radius:16px;padding:1.5rem;margin-bottom:1rem;border:1px solid rgba(255,255,255,.07);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 4px 16px #0003}.grammar-example-correct{font-weight:600;color:#34d399;margin-bottom:var(--spacing-xs)}.grammar-example-incorrect{color:#f87171;margin-bottom:var(--spacing-xs)}.grammar-example-explanation{color:#f1f5f999;margin-bottom:var(--spacing-xs)}.grammar-example-translation{font-style:italic;color:#f1f5f980}.grammar-section-divider{margin:1.5rem 0;border-color:#ffffff14!important}.grammar-tips-section{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;margin:1.5rem 0}.grammar-section-title{display:flex;align-items:center;gap:.5rem;font-size:1.125rem;font-weight:600;margin-bottom:1rem;color:#f1f5f9}.grammar-mistakes-list{list-style:none;padding:0;margin:0}.grammar-mistakes-list li{padding:.5rem 0;color:#f87171;font-size:.875rem;line-height:1.4}.grammar-tips-list{list-style:none;padding:0;margin:0}.grammar-tips-list li{padding:.5rem 0;color:#34d399;font-size:.875rem;line-height:1.4}.grammar-action-buttons{display:flex;gap:1rem;margin-top:1.5rem}.grammar-practice-btn{flex:1;background:linear-gradient(135deg,#6366f1,#8b5cf6)!important;color:#fff!important;font-weight:600!important;padding:1rem 2rem!important;border-radius:16px!important;text-transform:none!important;box-shadow:0 8px 25px #6366f159!important;transition:all .3s cubic-bezier(.4,0,.2,1)!important;border:1px solid rgba(255,255,255,.15)!important}.grammar-practice-btn:hover{background:linear-gradient(135deg,#4f46e5,#7c3aed)!important;box-shadow:0 12px 35px #6366f180!important;transform:translateY(-4px)}.grammar-study-btn{flex:1;color:#a5b4fc!important;border:1px solid rgba(129,140,248,.3)!important;background:#6366f114!important;font-weight:600!important;padding:1rem 2rem!important;border-radius:16px!important;text-transform:none!important;transition:all .3s cubic-bezier(.4,0,.2,1)!important;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.grammar-study-btn:hover{background:#6366f126!important;border-color:#818cf880!important;transform:translateY(-2px);box-shadow:0 8px 25px #6366f133!important}.grammar-empty-state{text-align:center;padding:4rem 2rem}.grammar-empty-text{font-size:1.125rem;color:#f1f5f980}@media (max-width: 768px){.grammar-hero-section{padding:32px 20px}.grammar-hero-title{font-size:2.5rem!important}.grammar-premium-progress{padding:24px 20px}.grammar-progress-header{flex-direction:column;gap:20px;text-align:center}.grammar-progress-stats{text-align:center}.grammar-progress-details{flex-direction:column;gap:16px;text-align:center}.grammar-progress-bar-container{padding:0;width:100%}.grammar-rule-header{flex-direction:column;gap:1rem}.grammar-exercise-info{margin:0;order:-1}.grammar-tips-section{grid-template-columns:1fr;gap:1.5rem}.grammar-action-buttons{flex-direction:column}.grammar-rule-chips{justify-content:center}.grammar-accordion-details{padding:1rem}}@media (max-width: 480px){.grammar-hero-section{padding:24px 16px}.grammar-hero-title{font-size:2rem!important}.grammar-premium-progress{padding:20px 16px}.grammar-rule-content{padding:1rem}.grammar-example-card,.grammar-accordion-details{padding:.75rem}}.app-container{min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2)}.cyrillic-font{font-family:Roboto,Arial,sans-serif;font-weight:500}.bulgarian-text{font-size:1.2em;color:#1976d2;font-weight:600}.pronunciation-guide{font-family:Courier New,monospace;color:#666;font-style:italic}.language-card{transition:all .3s cubic-bezier(.4,0,.2,1)}.language-card:hover{transform:translateY(-8px);box-shadow:0 12px 24px #00000026}.gradient-primary{background:linear-gradient(135deg,#667eea,#764ba2)}.gradient-success{background:linear-gradient(135deg,#4ecdc4,#44a08d)}.gradient-warning{background:linear-gradient(135deg,#ffecd2,#fcb69f)}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.pulse{animation:pulse 2s infinite}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:#f1f1f1;border-radius:4px}::-webkit-scrollbar-thumb{background:#888;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#555}