.header{position:sticky;top:0;z-index:100;background:#ffffffd9;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}[data-theme=dark] .header{background:#0b0b14d9}.header-container{max-width:1200px;margin:0 auto;padding:14px 20px;display:flex;justify-content:space-between;align-items:center}.logo{display:flex;align-items:center;gap:10px;text-decoration:none}.logo-icon{width:36px;height:36px;border-radius:10px;background:var(--gradient-primary);display:flex;align-items:center;justify-content:center;box-shadow:0 2px 8px #6366f14d}.logo-icon svg{width:20px;height:20px}.logo-text{font-size:1.25rem;font-weight:700;color:var(--text-primary);letter-spacing:-.01em}.logo-text span{background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.theme-toggle{width:42px;height:42px;border-radius:12px;border:1px solid var(--border);background:var(--bg-tertiary);color:var(--text-primary);display:flex;align-items:center;justify-content:center;transition:all .2s ease}.theme-toggle:hover{border-color:var(--accent-primary);background:var(--bg-secondary);transform:translateY(-1px);box-shadow:var(--shadow-sm)}[data-theme=dark] .theme-toggle:hover{background:var(--bg-card)}@media (min-width: 640px){.header-container{padding:16px 24px}}@media (min-width: 1024px){.header-container{padding:16px 32px}}.footer{margin-top:auto;padding:28px 20px;border-top:1px solid var(--border);background:var(--bg-secondary)}.footer-container{max-width:1200px;margin:0 auto;text-align:center}.footer-links{display:flex;justify-content:center;gap:16px;margin-bottom:16px;flex-wrap:wrap}.footer-links a{font-size:.8125rem;color:var(--text-secondary);text-decoration:none;font-weight:500;transition:color .2s ease}.footer-links a:hover{color:var(--accent-primary)}.footer-links span{color:var(--text-muted)}.footer-text{font-size:.8125rem;color:var(--text-muted);font-weight:500}.ad-banner{width:100%;background:var(--bg-secondary);border-bottom:1px solid var(--border)}.ad-banner.ad-bottom{border-bottom:none;border-top:1px solid var(--border)}.ad-container{max-width:1200px;width:100%;margin:0 auto;padding:12px 16px;display:flex;justify-content:center;align-items:center;min-height:110px}.adsterra-ad-unit{width:100%;max-width:970px;min-height:90px;display:flex;align-items:center;justify-content:center;background:#f5f5f5;border-radius:4px;overflow:hidden}.adsterra-ad-unit ins.adsbygoogle{display:block!important;margin:0 auto}[data-theme=dark] .adsterra-ad-unit{background:#1a1a2e}.video-ad-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#000000e6;display:flex;align-items:center;justify-content:center;z-index:9999;animation:fadeIn .3s ease}.video-ad-container{background:var(--bg-card);border-radius:16px;padding:24px;max-width:800px;width:95%;text-align:center;box-shadow:var(--shadow-xl)}.video-ad-title{font-size:1.25rem;font-weight:700;color:var(--text-primary);margin-bottom:20px}.video-ad-slot{width:100%;min-height:280px;background:#f5f5f5;border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:20px;overflow:hidden}[data-theme=dark] .video-ad-slot{background:var(--bg-tertiary)}.video-ad-slot ins{display:block!important}.video-ad-timer{font-size:.875rem;color:var(--text-muted);margin-bottom:16px}.video-ad-skip{padding:12px 32px;border-radius:10px;border:1px solid var(--border);background:var(--bg-tertiary);color:var(--text-primary);font-size:.9375rem;font-weight:600;cursor:pointer;transition:all .2s ease}.video-ad-skip:hover{background:var(--accent-primary);color:#fff;border-color:var(--accent-primary)}.video-ad-skip:disabled{opacity:.5;cursor:not-allowed}@media (min-width: 640px){.ad-container{padding:12px 24px}}@media (min-width: 1024px){.ad-container{padding:12px 32px}}.cookie-banner{position:fixed;bottom:0;left:0;right:0;background:var(--bg-card);border-top:1px solid var(--border);padding:20px;box-shadow:0 -4px 20px #0000001a;z-index:1000;animation:slideUp .3s ease}[data-theme=dark] .cookie-banner{box-shadow:0 -4px 20px #0000004d}@keyframes slideUp{0%{transform:translateY(100%);opacity:0}to{transform:translateY(0);opacity:1}}.cookie-content{max-width:800px;margin:0 auto 16px;text-align:center}.cookie-content p{font-size:.9375rem;color:var(--text-secondary);line-height:1.6;margin-bottom:12px}.cookie-links{display:flex;justify-content:center;gap:12px;font-size:.875rem}.cookie-links a{color:var(--accent-primary);text-decoration:none;font-weight:500}.cookie-links a:hover{text-decoration:underline}.cookie-links span{color:var(--text-muted)}.cookie-buttons{display:flex;justify-content:center;gap:12px}.cookie-btn{padding:10px 24px;border-radius:10px;font-size:.9375rem;font-weight:600;cursor:pointer;transition:all .2s ease}.cookie-decline{background:var(--bg-tertiary);border:1px solid var(--border);color:var(--text-secondary)}.cookie-decline:hover{background:var(--bg-secondary);border-color:var(--text-muted)}.cookie-accept{background:var(--gradient-primary);border:none;color:#fff;box-shadow:0 2px 8px #6366f14d}.cookie-accept:hover{box-shadow:0 4px 12px #6366f166;transform:translateY(-1px)}.landing{max-width:560px;margin:0 auto;padding:48px 20px;animation:fadeInUp .6s ease-out}.hero{text-align:center;margin-bottom:40px}.hero-badge{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;background:#6366f11a;border:1px solid rgba(99,102,241,.2);border-radius:20px;font-size:.75rem;font-weight:600;color:var(--accent-primary);text-transform:uppercase;letter-spacing:.05em;margin-bottom:20px}.hero-badge svg{width:14px;height:14px}.hero-title{font-size:2.75rem;font-weight:800;color:var(--text-primary);margin-bottom:12px;letter-spacing:-.02em;line-height:1.1}.hero-title span{background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-subtitle{font-size:1.125rem;color:var(--text-secondary);margin-bottom:20px;font-weight:500}.hero-description{font-size:.9375rem;color:var(--text-muted);max-width:440px;margin:0 auto;line-height:1.7}.config-section{background:var(--bg-card);border-radius:24px;padding:32px 28px;box-shadow:var(--shadow-lg);border:1px solid var(--border);animation:fadeInUp .6s ease-out .1s 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input:checked+.checkbox-custom{background:var(--accent-primary);border-color:var(--accent-primary);transform:scale(1.05)}.checkbox-label input:checked+.checkbox-custom:after{content:"✓";color:#fff;font-size:13px;font-weight:700}.checkbox-label:hover .checkbox-custom{border-color:var(--accent-primary)}.number-selector{display:flex;align-items:center;gap:12px}.number-btn{width:44px;height:44px;border-radius:12px;border:1px solid var(--border);background:var(--bg-tertiary);color:var(--text-primary);font-size:1.25rem;font-weight:600;display:flex;align-items:center;justify-content:center;transition:all .2s ease}.number-btn:hover:not(:disabled){background:var(--accent-primary);border-color:var(--accent-primary);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md)}.number-btn:disabled{opacity:.4;cursor:not-allowed}.number-input{width:72px;height:44px;border-radius:12px;border:1px solid var(--border);background:var(--bg-tertiary);color:var(--text-primary);font-size:1.125rem;font-weight:600;text-align:center;transition:all .2s ease}.number-input:focus{border-color:var(--accent-primary);box-shadow:0 0 0 3px #6366f126}.chat-input-container{position:relative}.chat-input{width:100%;padding:18px;border-radius:16px;border:1px solid var(--border);background:var(--bg-tertiary);color:var(--text-primary);font-size:.9375rem;resize:vertical;min-height:110px;transition:all .2s ease;line-height:1.6}.chat-input:focus{border-color:var(--accent-primary);box-shadow:0 0 0 3px #6366f126;background:var(--bg-secondary)}.chat-input::placeholder{color:var(--text-muted)}.error-message{padding:14px 18px;border-radius:12px;background:#ef444414;color:var(--error);font-size:.875rem;font-weight:500;border:1px solid rgba(239,68,68,.2)}.submit-btn{width:100%;padding:18px 28px;border-radius:14px;border:none;background:var(--gradient-primary);color:#fff;font-size:1rem;font-weight:600;display:flex;align-items:center;justify-content:center;gap:10px;transition:all .3s ease;box-shadow:0 4px 14px #6366f159;margin-top:8px}.submit-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 20px #6366f173}.submit-btn:active:not(:disabled){transform:translateY(0)}.submit-btn:disabled{opacity:.7;cursor:not-allowed}.spinner{width:20px;height:20px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}@media (min-width: 640px){.landing{padding:64px 32px}.hero-title{font-size:3.5rem}.config-section{padding:40px 36px}}@media (min-width: 1024px){.landing{padding:80px 40px}}.quiz-loading{min-height:100vh;display:flex;flex-direction:column}.quiz{flex:1;display:flex;flex-direction:column}.quiz-container{flex:1;max-width:680px;width:100%;margin:0 auto;padding:32px 20px;display:flex;flex-direction:column;animation:fadeInUp .4s ease-out}.progress-bar{margin-bottom:28px}.progress-text{display:block;font-size:.8125rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:10px}.progress-track{width:100%;height:8px;background:var(--bg-tertiary);border-radius:4px;overflow:hidden}.progress-fill{height:100%;background:var(--gradient-primary);border-radius:4px;transition:width .4s cubic-bezier(.4,0,.2,1);box-shadow:0 2px 6px #6366f14d}.question-card{background:var(--bg-card);border-radius:20px;padding:28px 24px;box-shadow:var(--shadow-lg);border:1px solid var(--border);margin-bottom:24px}.question-badge{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:20px;background:#6366f11a;color:var(--accent-primary);font-size:.6875rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;margin-bottom:18px;border:1px solid rgba(99,102,241,.15)}.question-badge svg{width:12px;height:12px}.question-text{font-size:1.25rem;font-weight:600;color:var(--text-primary);line-height:1.55;margin-bottom:24px;letter-spacing:-.01em}.options-list{display:flex;flex-direction:column;gap:14px}.option-btn{width:100%;padding:18px;border-radius:14px;border:2px solid var(--border);background:var(--bg-tertiary);color:var(--text-primary);display:flex;align-items:center;gap:14px;text-align:left;transition:all .25s ease;font-size:.9375rem}.option-btn:hover{border-color:var(--accent-primary);background:var(--bg-secondary);transform:translate(4px);box-shadow:var(--shadow-md)}.option-btn.selected{border-color:var(--accent-primary);background:#6366f11a;box-shadow:0 0 0 3px #6366f126}[data-theme=dark] .option-btn.selected{background:#818cf81f}.option-letter{width:36px;height:36px;border-radius:10px;background:var(--bg-secondary);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.875rem;color:var(--accent-primary);flex-shrink:0;transition:all .2s ease}.option-btn.selected .option-letter{background:var(--accent-primary);color:#fff;border-color:var(--accent-primary);box-shadow:0 2px 6px #6366f14d}.option-text{font-weight:500}.open-answer-container{margin-top:8px}.open-answer-input{width:100%;padding:18px;border-radius:14px;border:2px solid var(--border);background:var(--bg-tertiary);color:var(--text-primary);font-size:.9375rem;resize:vertical;min-height:130px;transition:all .2s ease;line-height:1.6}.open-answer-input:focus{border-color:var(--accent-primary);box-shadow:0 0 0 3px #6366f126;background:var(--bg-secondary)}.open-answer-input::placeholder{color:var(--text-muted)}.navigation{display:flex;gap:14px;margin-top:auto}.nav-btn{flex:1;padding:16px 24px;border-radius:14px;border:none;font-size:.9375rem;font-weight:600;transition:all .25s 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rgba(239,68,68,.3)}.performance-message{font-size:1.5rem;font-weight:700;margin-bottom:10px;letter-spacing:-.01em}.performance-message.excellent{color:var(--success)}.performance-message.good{color:var(--accent-secondary)}.performance-message.average{color:#f59e0b}.performance-message.needs-practice{color:var(--error)}.score-percentage{font-size:1rem;color:var(--text-muted);font-weight:500}.answers-review{margin-bottom:32px}.review-title{font-size:1.125rem;font-weight:700;color:var(--text-primary);margin-bottom:18px;letter-spacing:-.01em}.answer-item{background:var(--bg-card);border-radius:16px;padding:22px;margin-bottom:14px;border:1px solid var(--border);transition:all .2s ease}.answer-item:hover{box-shadow:var(--shadow-md)}.answer-item.correct{border-left:4px solid var(--success);background:linear-gradient(90deg,rgba(34,197,94,.05) 0%,var(--bg-card) 30%)}.answer-item.incorrect{border-left:4px solid var(--error);background:linear-gradient(90deg,rgba(239,68,68,.05) 0%,var(--bg-card) 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p{font-size:1rem;color:var(--text-secondary)}@media (min-width: 640px){.legal-page,.contact-page{padding:64px 32px}.legal-container,.contact-container{padding:48px 36px}}:root{--bg-primary: #F8F9FC;--bg-secondary: #FFFFFF;--bg-card: #FFFFFF;--bg-tertiary: #F1F3F9;--text-primary: #1E293B;--text-secondary: #475569;--text-muted: #94A3B8;--accent-primary: #6366F1;--accent-primary-light: #A5B4FC;--accent-hover: #4F46E5;--accent-secondary: #10B981;--accent-secondary-light: #6EE7B7;--error: #EF4444;--success: #22C55E;--warning: #F59E0B;--border: #E2E8F0;--border-focus: #6366F1;--shadow-xs: 0 1px 2px rgba(0, 0, 0, .04);--shadow-sm: 0 2px 8px rgba(0, 0, 0, .06);--shadow-md: 0 4px 16px rgba(0, 0, 0, .08);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .12);--shadow-xl: 0 16px 48px rgba(0, 0, 0, .16);--gradient-primary: linear-gradient(135deg, #6366F1 0%, #8B5CF6 100%);--gradient-bg: linear-gradient(180deg, #F8F9FC 0%, #EEF2FF 100%)}[data-theme=dark]{--bg-primary: #0B0B14;--bg-secondary: #13131F;--bg-card: #1A1A2B;--bg-tertiary: #252538;--text-primary: #F1F5F9;--text-secondary: #CBD5E1;--text-muted: #64748B;--accent-primary: #818CF8;--accent-primary-light: #6366F1;--accent-hover: #A5B4FC;--accent-secondary: #34D399;--accent-secondary-light: #10B981;--error: #F87171;--success: #4ADE80;--warning: #FBBF24;--border: #2D2D44;--border-focus: #818CF8;--shadow-xs: 0 1px 2px rgba(0, 0, 0, .2);--shadow-sm: 0 2px 8px rgba(0, 0, 0, .3);--shadow-md: 0 4px 16px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .5);--shadow-xl: 0 16px 48px rgba(0, 0, 0, .6);--gradient-primary: linear-gradient(135deg, #818CF8 0%, #A78BFA 100%);--gradient-bg: linear-gradient(180deg, #0B0B14 0%, #131328 100%)}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--gradient-bg);background-attachment:fixed;color:var(--text-primary);line-height:1.6;transition:all .3s ease;min-height:100vh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{min-height:100vh;display:flex;flex-direction:column}.main-content{flex:1;display:flex;flex-direction:column}a{color:var(--accent-primary);text-decoration:none;transition:color .2s ease}a:hover{color:var(--accent-hover)}button{font-family:inherit;cursor:pointer;border:none;outline:none}input,textarea{font-family:inherit;outline:none}::selection{background:var(--accent-primary);color:#fff}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px}@media (min-width: 640px){.container{padding:0 24px}}@media (min-width: 1024px){.container{padding:0 32px}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInLeft{0%{opacity:0;transform:translate(30px)}to{opacity:1;transform:translate(0)}}@keyframes slideInRight{0%{opacity:0;transform:translate(-30px)}to{opacity:1;transform:translate(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.animate-fade-in{animation:fadeIn .4s ease-out}.animate-fade-in-up{animation:fadeInUp .5s ease-out}.animate-slide-left{animation:slideInLeft .3s ease-out}.animate-slide-right{animation:slideInRight .3s ease-out}.skeleton{background:linear-gradient(90deg,var(--bg-tertiary) 25%,var(--border) 50%,var(--bg-tertiary) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:8px}