:root{--color-primary:#3498db;--color-primary-dark:#2980b9;--color-secondary:#95a5a6;--color-secondary-dark:#7f8c8d;--color-success:#27ae60;--color-success-dark:#229954;--color-danger:#e74c3c;--color-danger-dark:#c0392b;--color-warning:#f39c12;--color-warning-dark:#e67e22;--color-white:#fff;--color-light:#f8f9fa;--color-light-gray:#ecf0f1;--color-gray:#7f8c8d;--color-dark-gray:#34495e;--color-dark:#2c3e50;--color-black:#333;--gradient-primary:linear-gradient(135deg,#667eea,#764ba2);--gradient-secondary:linear-gradient(135deg,#f093fb,#f5576c);--shadow-sm:0 1px 3px #0000001a;--shadow-md:0 2px 4px #0000001a;--shadow-lg:0 10px 30px #0000001a;--border-radius-sm:6px;--border-radius-md:8px;--border-radius-lg:12px;--border-radius-xl:15px;--spacing-xs:0.25rem;--spacing-sm:0.5rem;--spacing-md:1rem;--spacing-lg:1.5rem;--spacing-xl:2rem;--spacing-xxl:3rem;--font-size-xs:0.8rem;--font-size-sm:0.9rem;--font-size-base:1rem;--font-size-lg:1.1rem;--font-size-xl:1.25rem;--font-size-xxl:1.5rem;--font-size-hero:3rem;--transition-fast:0.2s ease;--transition-normal:0.3s ease;--transition-slow:0.5s ease;--primary-color:var(--color-primary);--primary-dark:var(--color-primary-dark);--secondary-color:var(--color-secondary);--secondary-dark:var(--color-secondary-dark);--success-color:var(--color-success);--success-dark:var(--color-success-dark);--danger-color:var(--color-danger);--danger-dark:var(--color-danger-dark);--warning-color:var(--color-warning);--warning-dark:var(--color-warning-dark);--text-color:var(--color-dark);--border-color:var(--color-light-gray)}body{background-color:#f8f9fa;color:#333;font-size:1rem}.gap-1{gap:var(--spacing-sm)}.gap-2{gap:var(--spacing-md)}@media (max-width:768px){body{font-size:15px}}@media (max-width:480px){body{font-size:14px}}@media (max-width:320px){body{font-size:13px}}@media (max-width:768px){.header{flex-direction:column;gap:var(--spacing-md);padding:var(--spacing-md)}.header-title{font-size:var(--font-size-lg)}.nav-links{flex-wrap:wrap;gap:var(--spacing-xs);justify-content:center;width:100%}.btn-logout,.nav-link{font-size:var(--font-size-xs);padding:var(--spacing-sm) var(--spacing-sm)}.main-content{margin:var(--spacing-md) auto;padding:0 var(--spacing-md)}}@media (max-width:480px){.header{padding:var(--spacing-sm)}.header-title{font-size:var(--font-size-base)}.nav-links{gap:var(--spacing-xs)}.btn-logout,.nav-link{font-size:var(--font-size-xs);padding:var(--spacing-sm) var(--spacing-sm)}.main-content{padding:0 var(--spacing-sm)}}@media (max-width:320px){.btn-logout,.nav-link{font-size:var(--font-size-xs);padding:var(--spacing-xs) var(--spacing-sm)}}.btn-danger{background:#e74c3c}.btn-danger:hover{background:#c0392b}.btn-success{background:#27ae60}.btn-success:hover{background:#229954}@media (max-width:768px){.card{border-radius:10px;padding:1.25rem}.card-title{font-size:1.15rem}.btn{font-size:.95rem;padding:.65rem 1.1rem}.btn-sm{font-size:.8rem;padding:.4rem .8rem}.form-input,.form-select{font-size:.95rem;padding:.65rem}.list-item{padding:.85rem}.list-item-header{align-items:flex-start;flex-direction:column;gap:.25rem}.qr-container{padding:.75rem}}@media (max-width:480px){.card{border-radius:8px;padding:1rem}.card-title{font-size:1.1rem}.btn{font-size:.9rem;padding:.55rem 1rem}.form-input,.form-select{font-size:.9rem;padding:.55rem}.list-item{padding:.75rem}}.grid{display:grid}.grid-cols-1{grid-template-columns:1fr}.grid-cols-3{grid-template-columns:repeat(3,1fr)}.gap-4{gap:1rem}.list-disc{list-style-type:disc}.pl-5{padding-left:1.25rem}.font-semibold{font-weight:600}.bg-blue-50{background-color:#eff6ff}.bg-green-50{background-color:#f0fdf4}.bg-purple-50{background-color:#faf5ff}.text-blue-600{color:#2563eb}.text-green-600{color:#16a34a}.text-purple-600{color:#9333ea}.features-section{padding:3rem 1rem}.benefits-section{background:#f8f9fa;padding:3rem 1rem}.video-section{padding:3rem 1rem}@media (max-width:768px){.hero-section{border-radius:0 0 15px 15px;padding:2rem 1rem}.hero-title{font-size:2rem}.hero-subtitle{font-size:1rem}.platforms-info{gap:1rem;grid-template-columns:1fr}.platform-card{padding:1.5rem}.section-title{font-size:1.5rem}.features-grid{gap:1rem;grid-template-columns:1fr}.feature-item{padding:1.5rem}.cta-buttons{align-items:center;flex-direction:column}.cta-buttons .btn{max-width:300px;width:100%}.benefits-section,.cta-section,.features-section,.video-section{padding:2rem .5rem}.main-content--with-nav{padding-bottom:70px}}@media (max-width:480px){.hero-section{padding:1.5rem .5rem}.hero-title{font-size:1.75rem}.container{padding:0 .5rem}.main-content--with-nav{padding:0 .5rem 70px}.achievements-screen,.friends-screen,.history-screen,.profile-screen,.settings-screen{padding:.5rem}}@media (max-width:320px){.hero-section{border-radius:0 0 10px 10px;padding:1rem .25rem}.hero-title{font-size:1.5rem}.main-content--with-nav{padding-bottom:60px}}:root{--vk-blue:#4c75a3;--vk-blue-dark:#3b5a7a;--vk-blue-light:#e8f0f8;--vk-bg:#fff;--vk-surface:#f8f9fa;--vk-text:#212529;--vk-text-secondary:#6c757d;--vk-border:#dee2e6;--vk-divider:#e9ecef;--vk-bg-dark:#1a1a1a;--vk-surface-dark:#2d2d2d;--vk-text-dark:#fff;--vk-text-secondary-dark:#adb5bd;--vk-border-dark:#495057;--vk-divider-dark:#343a40;--vk-radius:12px;--vk-radius-lg:16px;--vk-radius-xl:20px;--vk-shadow:0 2px 8px #4c75a31a;--vk-shadow-lg:0 4px 16px #4c75a326;--vk-transition:all 0.2s cubic-bezier(0.4,0,0.2,1)}[data-theme=dark]{--vk-bg:var(--vk-bg-dark);--vk-surface:var(--vk-surface-dark);--vk-text:var(--vk-text-dark);--vk-text-secondary:var(--vk-text-secondary-dark);--vk-border:var(--vk-border-dark);--vk-divider:var(--vk-divider-dark)}.vk-app{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#fff;background:var(--vk-bg);color:#212529;color:var(--vk-text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.5}.vk-app *{box-sizing:border-box}.vk-app-container{background:#fff;background:var(--vk-bg);margin:0;min-height:100vh;padding:0}.vk-app .main-content{margin:0;min-height:100vh;padding:0;width:100%}.vk-app .card{background:#f8f9fa;background:var(--vk-surface);border:1px solid #dee2e6;border:1px solid var(--vk-border);border-radius:16px;border-radius:var(--vk-radius-lg);box-shadow:0 2px 8px #4c75a31a;box-shadow:var(--vk-shadow);margin:1rem;padding:1.5rem;transition:all .2s cubic-bezier(.4,0,.2,1);transition:var(--vk-transition)}.vk-app .card:hover{box-shadow:0 4px 16px #4c75a326;box-shadow:var(--vk-shadow-lg);transform:translateY(-1px)}.vk-app .card-title{color:#212529;color:var(--vk-text);font-size:1.5rem;font-weight:700;margin-bottom:1rem;text-align:center}.vk-app .btn{align-items:center;border:none;border-radius:12px;border-radius:var(--vk-radius);cursor:pointer;display:inline-flex;font-size:1rem;font-weight:600;justify-content:center;min-height:44px;padding:12px 24px;text-decoration:none;transition:all .2s cubic-bezier(.4,0,.2,1);transition:var(--vk-transition);white-space:nowrap}.vk-app .btn-primary{background:#4c75a3;background:var(--vk-blue);color:#fff}.vk-app .btn-primary:hover{background:#3b5a7a;background:var(--vk-blue-dark);transform:translateY(-1px)}.vk-app .btn-secondary{background:#f8f9fa;background:var(--vk-surface);border:1px solid #dee2e6;border:1px solid var(--vk-border);color:#212529;color:var(--vk-text)}.vk-app .btn-secondary:hover{background:#dee2e6;background:var(--vk-border)}.vk-app .btn-outline{background:#0000;border:2px solid #4c75a3;border:2px solid var(--vk-blue);color:#4c75a3;color:var(--vk-blue)}.vk-app .btn-outline:hover{background:#4c75a3;background:var(--vk-blue);color:#fff}.vk-app .btn-block{margin-bottom:1rem;width:100%}.vk-app .form-group{margin-bottom:1.5rem}.vk-app .form-label{color:#212529;color:var(--vk-text);display:block;font-size:.9rem;font-weight:600;margin-bottom:.5rem}.vk-app .form-input{background:#fff;background:var(--vk-bg);border:2px solid #dee2e6;border:2px solid var(--vk-border);border-radius:12px;border-radius:var(--vk-radius);color:#212529;color:var(--vk-text);font-size:1rem;padding:12px 16px;transition:all .2s cubic-bezier(.4,0,.2,1);transition:var(--vk-transition);width:100%}.vk-app .form-input:focus{border-color:#4c75a3;border-color:var(--vk-blue);box-shadow:0 0 0 3px #4c75a31a;outline:none}.vk-app .form-input::placeholder{color:#6c757d;color:var(--vk-text-secondary)}.vk-app .qr-container{background:#f8f9fa;background:var(--vk-surface);border:2px solid #4c75a3;border:2px solid var(--vk-blue);border-radius:20px;border-radius:var(--vk-radius-xl);box-shadow:0 2px 8px #4c75a31a;box-shadow:var(--vk-shadow);margin:2rem 0;padding:2rem;text-align:center}.vk-app .qr-info{color:#4c75a3;color:var(--vk-blue);font-weight:600;margin-top:1rem}.vk-app .alert{border:1px solid #0000;border-radius:12px;border-radius:var(--vk-radius);font-size:.9rem;margin:1rem 0;padding:1rem}.vk-app .alert-info{background:#e8f0f8;background:var(--vk-blue-light);border-color:#4c75a3;border-color:var(--vk-blue);color:#3b5a7a;color:var(--vk-blue-dark)}.vk-app .alert-success{background:#e8f5e8;border-color:#4caf50;color:#2e7d32}.vk-app .alert-warning{background:#fff8e1;border-color:#ff9800;color:#f57c00}.vk-app .alert-danger{background:#ffebee;border-color:#f44336;color:#c62828}.vk-app .list{list-style:none;margin:0;padding:0}.vk-app .list-item{background:#f8f9fa;background:var(--vk-surface);border:1px solid #dee2e6;border:1px solid var(--vk-border);border-radius:12px;border-radius:var(--vk-radius);margin-bottom:.5rem;padding:1rem;transition:all .2s cubic-bezier(.4,0,.2,1);transition:var(--vk-transition)}.vk-app .list-item:hover{background:#e9ecef;background:var(--vk-divider)}.vk-app .list-item-title{color:#212529;color:var(--vk-text);font-weight:600;margin-bottom:.5rem}.vk-app .placeholder-page{align-items:center;background:#fff;background:var(--vk-bg);display:flex;flex-direction:column;justify-content:center;min-height:100vh;padding:2rem;text-align:center}.vk-app .placeholder-icon{color:#4c75a3;color:var(--vk-blue);font-size:4rem;margin-bottom:2rem;opacity:.8}.vk-app .placeholder-title{color:#212529;color:var(--vk-text);font-size:2rem;font-weight:700;margin-bottom:1rem}.vk-app .placeholder-text{color:#6c757d;color:var(--vk-text-secondary);font-size:1.1rem;line-height:1.6;margin-bottom:2rem;max-width:500px}.vk-app .coming-soon{background:#4c75a3;background:var(--vk-blue);border-radius:25px;box-shadow:0 2px 8px #4c75a31a;box-shadow:var(--vk-shadow);color:#fff;font-size:.9rem;font-weight:600;margin-top:1rem;padding:.75rem 1.5rem}.vk-app .profile-header{align-items:center;display:flex;margin-bottom:2rem;padding:1rem}.vk-app .profile-avatar{margin-right:1.5rem}.vk-app .avatar-image{border-radius:50%;height:80px;object-fit:cover;width:80px}.vk-app .avatar-placeholder{align-items:center;background:#4c75a3;background:var(--vk-blue);border-radius:50%;color:#fff;display:flex;font-size:2rem;font-weight:700;height:80px;justify-content:center;width:80px}.vk-app .profile-info{flex:1 1}.vk-app .profile-name{color:#212529;color:var(--vk-text);font-size:1.5rem;font-weight:700;margin-bottom:.5rem}.vk-app .profile-username{color:#6c757d;color:var(--vk-text-secondary);margin-bottom:1rem}.vk-app .profile-stats{display:flex;gap:2rem}.vk-app .stat-item{text-align:center}.vk-app .stat-value{color:#4c75a3;color:var(--vk-blue);display:block;font-size:1.5rem;font-weight:700}.vk-app .stat-label{color:#6c757d;color:var(--vk-text-secondary);font-size:.9rem}.vk-app .text-center{text-align:center}.vk-app .text-left{text-align:left}.vk-app .text-right{text-align:right}.vk-app .mb-1{margin-bottom:.25rem}.vk-app .mb-2{margin-bottom:.5rem}.vk-app .mb-3{margin-bottom:1rem}.vk-app .mb-4{margin-bottom:1.5rem}.vk-app .mt-1{margin-top:.25rem}.vk-app .mt-2{margin-top:.5rem}.vk-app .mt-3{margin-top:1rem}.vk-app .mt-4{margin-top:1.5rem}.vk-app .text-muted{color:#6c757d;color:var(--vk-text-secondary)}.vk-app .d-flex{display:flex}.vk-app .justify-content-between{justify-content:space-between}.vk-app .align-items-center{align-items:center}@media (max-width:768px){.vk-app .card{margin:.5rem;padding:1rem}.vk-app .placeholder-page{padding:1.5rem 1rem}.vk-app .placeholder-title{font-size:1.75rem}.vk-app .profile-stats{flex-direction:column;gap:1rem}}@media (max-width:480px){.vk-app .card{margin:.25rem;padding:.75rem}.vk-app .placeholder-page{padding:1rem .75rem}.vk-app .placeholder-title{font-size:1.5rem}.vk-app .placeholder-icon{font-size:3rem}.vk-app .profile-header{flex-direction:column;text-align:center}.vk-app .profile-avatar{margin-bottom:1rem;margin-right:0}}:root{--tg-blue:#08c;--tg-blue-dark:#069;--tg-blue-light:#e3f2fd;--tg-bg:#fff;--tg-surface:#f8f9fa;--tg-text:#1c1c1e;--tg-text-secondary:#6c6c70;--tg-border:#e5e5ea;--tg-divider:#f2f2f7;--tg-bg-dark:#1c1c1e;--tg-surface-dark:#2c2c2e;--tg-text-dark:#fff;--tg-text-secondary-dark:#8e8e93;--tg-border-dark:#3a3a3c;--tg-divider-dark:#38383a;--tg-radius:12px;--tg-radius-lg:16px;--tg-radius-xl:20px;--tg-shadow:0 2px 8px #00000014;--tg-shadow-lg:0 4px 16px #0000001f;--tg-transition:all 0.2s cubic-bezier(0.4,0,0.2,1)}[data-theme=dark]{--tg-bg:var(--tg-bg-dark);--tg-surface:var(--tg-surface-dark);--tg-text:var(--tg-text-dark);--tg-text-secondary:var(--tg-text-secondary-dark);--tg-border:var(--tg-border-dark);--tg-divider:var(--tg-divider-dark)}.tg-app{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#fff;background:var(--tg-bg);color:#1c1c1e;color:var(--tg-text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.5}.tg-app *{box-sizing:border-box}.tg-app-container{background:#fff;background:var(--tg-bg);margin:0;min-height:100vh;padding:0}.tg-app .main-content{margin:0;min-height:100vh;padding:0;width:100%}.tg-app .card{background:#f8f9fa;background:var(--tg-surface);border:1px solid #e5e5ea;border:1px solid var(--tg-border);border-radius:16px;border-radius:var(--tg-radius-lg);box-shadow:0 2px 8px #00000014;box-shadow:var(--tg-shadow);margin:1rem;padding:1.5rem;transition:all .2s cubic-bezier(.4,0,.2,1);transition:var(--tg-transition)}.tg-app .card:hover{box-shadow:0 4px 16px #0000001f;box-shadow:var(--tg-shadow-lg);transform:translateY(-1px)}.tg-app .card-title{color:#1c1c1e;color:var(--tg-text);font-size:1.5rem;font-weight:700;margin-bottom:1rem;text-align:center}.tg-app .btn{align-items:center;border:none;border-radius:12px;border-radius:var(--tg-radius);cursor:pointer;display:inline-flex;font-size:1rem;font-weight:600;justify-content:center;min-height:44px;padding:12px 24px;text-decoration:none;transition:all .2s cubic-bezier(.4,0,.2,1);transition:var(--tg-transition);white-space:nowrap}.tg-app .btn-primary{background:#08c;background:var(--tg-blue);color:#fff}.tg-app .btn-primary:hover{background:#069;background:var(--tg-blue-dark);transform:translateY(-1px)}.tg-app .btn-secondary{background:#f8f9fa;background:var(--tg-surface);border:1px solid #e5e5ea;border:1px solid var(--tg-border);color:#1c1c1e;color:var(--tg-text)}.tg-app .btn-secondary:hover{background:#e5e5ea;background:var(--tg-border)}.tg-app .btn-outline{background:#0000;border:2px solid #08c;border:2px solid var(--tg-blue);color:#08c;color:var(--tg-blue)}.tg-app .btn-outline:hover{background:#08c;background:var(--tg-blue);color:#fff}.tg-app .btn-block{margin-bottom:1rem;width:100%}.tg-app .form-group{margin-bottom:1.5rem}.tg-app .form-label{color:#1c1c1e;color:var(--tg-text);display:block;font-size:.9rem;font-weight:600;margin-bottom:.5rem}.tg-app .form-input{background:#fff;background:var(--tg-bg);border:2px solid #e5e5ea;border:2px solid var(--tg-border);border-radius:12px;border-radius:var(--tg-radius);color:#1c1c1e;color:var(--tg-text);font-size:1rem;padding:12px 16px;transition:all .2s cubic-bezier(.4,0,.2,1);transition:var(--tg-transition);width:100%}.tg-app .form-input:focus{border-color:#08c;border-color:var(--tg-blue);box-shadow:0 0 0 3px #0088cc1a;outline:none}.tg-app .form-input::placeholder{color:#6c6c70;color:var(--tg-text-secondary)}.tg-app .qr-container{background:#f8f9fa;background:var(--tg-surface);border:2px solid #08c;border:2px solid var(--tg-blue);border-radius:20px;border-radius:var(--tg-radius-xl);box-shadow:0 2px 8px #00000014;box-shadow:var(--tg-shadow);margin:2rem 0;padding:2rem;text-align:center}.tg-app .qr-info{color:#08c;color:var(--tg-blue);font-weight:600;margin-top:1rem}.tg-app .alert{border:1px solid #0000;border-radius:12px;border-radius:var(--tg-radius);font-size:.9rem;margin:1rem 0;padding:1rem}.tg-app .alert-info{background:#e3f2fd;background:var(--tg-blue-light);border-color:#08c;border-color:var(--tg-blue);color:#069;color:var(--tg-blue-dark)}.tg-app .alert-success{background:#e8f5e8;border-color:#4caf50;color:#2e7d32}.tg-app .alert-warning{background:#fff8e1;border-color:#ff9800;color:#f57c00}.tg-app .alert-danger{background:#ffebee;border-color:#f44336;color:#c62828}.tg-app .list{list-style:none;margin:0;padding:0}.tg-app .list-item{background:#f8f9fa;background:var(--tg-surface);border:1px solid #e5e5ea;border:1px solid var(--tg-border);border-radius:12px;border-radius:var(--tg-radius);margin-bottom:.5rem;padding:1rem;transition:all .2s cubic-bezier(.4,0,.2,1);transition:var(--tg-transition)}.tg-app .list-item:hover{background:#f2f2f7;background:var(--tg-divider)}.tg-app .list-item-title{color:#1c1c1e;color:var(--tg-text);font-weight:600;margin-bottom:.5rem}.tg-app .placeholder-page{align-items:center;background:#fff;background:var(--tg-bg);display:flex;flex-direction:column;justify-content:center;min-height:100vh;padding:2rem;text-align:center}.tg-app .placeholder-icon{color:#08c;color:var(--tg-blue);font-size:4rem;margin-bottom:2rem;opacity:.8}.tg-app .placeholder-title{color:#1c1c1e;color:var(--tg-text);font-size:2rem;font-weight:700;margin-bottom:1rem}.tg-app 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