@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap";:root{--bg-primary: #F5F5F4;--bg-secondary: #FFFFFF;--bg-card: #FFFFFF;--bg-elevated: #F5F5F4;--primary: #2563EB;--primary-glow: rgba(37, 99, 235, .3);--primary-gradient: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);--accent: #8b5cf6;--accent-glow: rgba(139, 92, 246, .3);--success: #10b981;--success-glow: rgba(16, 185, 129, .3);--error: #ef4444;--warning: #f59e0b;--text-primary: #1e293b;--text-secondary: #64748b;--text-muted: #94a3b8;--border: #E7E5E4;--border-light: #F5F5F4;--title-color-light: #2563EB;--title-color-dark: #f9fafb;--card-radius: 16px;--card-shadow: 0 4px 24px rgba(0, 0, 0, .08);--card-glow: 0 0 40px rgba(37, 99, 235, .15);--card-padding: 28px;--button-radius: 10px;--container-max: 1280px;--container-padding: 24px;--section-gap: 80px;--grid-gap: 24px;--transition: all .3s cubic-bezier(.4, 0, .2, 1);--transition-fast: all .15s cubic-bezier(.4, 0, .2, 1)}[data-theme=dark]{--bg-primary: #0B0F19;--bg-secondary: #111827;--bg-card: #1a2235;--bg-elevated: #242f45;--primary: #2563EB;--primary-glow: rgba(37, 99, 235, .4);--primary-gradient: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);--accent: #8b5cf6;--accent-glow: rgba(139, 92, 246, .4);--success: #10b981;--success-glow: rgba(16, 185, 129, .4);--error: #ef4444;--warning: #f59e0b;--text-primary: #f9fafb;--text-secondary: #9ca3af;--text-muted: #6b7280;--border: #1F2937;--border-light: #374151;--card-shadow: 0 4px 24px rgba(0, 0, 0, .4)}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;-webkit-font-smoothing:antialiased;transition:var(--transition)}.container{max-width:var(--container-max);margin:0 auto;padding:0 var(--container-padding)}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--card-radius);padding:var(--card-padding);box-shadow:var(--card-shadow);transition:var(--transition)}.card:hover{border-color:var(--primary);box-shadow:var(--card-glow),var(--card-shadow);transform:translateY(-2px)}.card-glow{box-shadow:var(--card-glow),var(--card-shadow);border-color:var(--primary)}.btn-primary{display:inline-block;padding:14px 28px;background:var(--primary-gradient);color:#fff;border:none;border-radius:var(--button-radius);font-size:.95rem;font-weight:600;font-family:inherit;cursor:pointer;text-decoration:none;transition:var(--transition-fast);box-shadow:0 4px 14px var(--primary-glow)}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 20px var(--primary-glow)}.btn-secondary{display:inline-block;padding:14px 28px;background:var(--bg-elevated);color:var(--text-primary);border:1px solid var(--border);border-radius:var(--button-radius);font-size:.95rem;font-weight:500;cursor:pointer;text-decoration:none;transition:var(--transition-fast)}.btn-secondary:hover{background:var(--bg-secondary);border-color:var(--text-muted)}.btn-large{padding:18px 36px;font-size:1.05rem}.header{background:var(--bg-secondary);border-bottom:1px solid var(--border);padding:16px 0;position:sticky;top:0;z-index:1000;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px)}.header-content{display:flex;justify-content:space-between;align-items:center}.header-logo{display:flex;align-items:center;gap:12px;font-size:1.4rem;font-weight:800;color:var(--text-primary);text-decoration:none}.header-logo-icon{font-size:1.6rem}.header-nav{display:flex;gap:32px;align-items:center}.header-nav a{color:var(--text-secondary);text-decoration:none;font-weight:500;font-size:.95rem;transition:var(--transition-fast)}.header-nav a:hover{color:var(--text-primary)}.header-actions{display:flex;gap:16px;align-items:center}.header-icon-btn{background:transparent;border:none;color:var(--text-secondary);font-size:1.2rem;cursor:pointer;padding:8px;border-radius:var(--button-radius);transition:var(--transition-fast)}.header-icon-btn:hover{background:var(--bg-elevated);color:var(--text-primary)}.user-avatar{width:36px;height:36px;border-radius:50%;background:var(--primary-gradient);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.9rem;color:#fff;cursor:pointer}.hero{padding:100px 0;background:radial-gradient(ellipse at top,rgba(59,130,246,.15) 0%,transparent 50%)}.hero-content{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}.hero-badge{display:inline-block;padding:8px 16px;background:rgba(59,130,246,.15);border:1px solid rgba(59,130,246,.3);border-radius:var(--button-radius);color:var(--primary);font-size:.85rem;font-weight:600;margin-bottom:24px}.hero-title{font-size:3.5rem;font-weight:900;line-height:1.1;margin-bottom:20px}[data-theme=light] .hero-title{color:var(--title-color-light)}[data-theme=dark] .hero-title{background:linear-gradient(135deg,#f9fafb 0%,#9ca3af 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-subtitle{font-size:1.25rem;color:var(--text-secondary);line-height:1.7;margin-bottom:36px}.hero-buttons{display:flex;gap:16px}.hero-visual{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--card-radius);padding:32px;box-shadow:var(--card-shadow);position:relative;overflow:hidden}.hero-visual:before{content:"";position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle,rgba(59,130,246,.1) 0%,transparent 50%);animation:pulse 4s ease-in-out infinite}.logo-strip-section{padding:60px 0;background:var(--bg-elevated);border-top:1px solid var(--border);border-bottom:1px solid var(--border);overflow:hidden}.logo-strip-title{text-align:center;font-size:1.1rem;font-weight:600;color:var(--text-secondary);margin-bottom:40px;letter-spacing:.5px;text-transform:uppercase}.logo-strip-wrapper{overflow:hidden;position:relative;width:100%}.logo-strip{display:flex;gap:40px;justify-content:center;flex-wrap:nowrap;animation:scroll-left-to-right 20s linear infinite}.logo-strip:hover{animation-play-state:paused}@keyframes scroll-left-to-right{0%{transform:translate(-50%)}to{transform:translate(0)}}.logo-item{flex-shrink:0}.logo-badge{display:flex;align-items:center;gap:12px;padding:12px 24px;background:var(--bg-card);border:2px solid var(--border);border-radius:var(--button-radius);transition:var(--transition-fast);opacity:.7}.logo-badge:hover{opacity:1;border-color:var(--primary);transform:scale(1.05)}.logo-icon{font-size:1.5rem}.cert-logo{height:32px;width:auto;max-width:100px;object-fit:contain;display:block}.logo-name{font-weight:600;color:var(--text-secondary);font-size:.95rem}@keyframes scroll-left{0%{transform:translate(0)}to{transform:translate(-50%)}}.feature-section{padding:var(--section-gap) 0}.section-header{text-align:center;margin-bottom:60px}.section-title{font-size:2.5rem;font-weight:800;margin-bottom:16px}.section-subtitle{color:var(--text-secondary);font-size:1.1rem;max-width:600px;margin:0 auto}.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--grid-gap)}.feature-card{text-align:center;padding:36px 24px}.feature-icon{font-size:3rem;margin-bottom:20px;display:inline-block}.feature-title{font-size:1.15rem;font-weight:700;margin-bottom:12px}.feature-desc{color:var(--text-secondary);font-size:.95rem;line-height:1.6}.catalog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:var(--grid-gap);padding:60px 0}.catalog-filter{display:flex;gap:12px;margin-bottom:40px;flex-wrap:wrap}.filter-btn{padding:10px 20px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--button-radius);color:var(--text-secondary);font-weight:500;cursor:pointer;transition:var(--transition-fast)}.filter-btn:hover,.filter-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}.exam-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--card-radius);padding:28px;transition:var(--transition)}.exam-card:hover{border-color:var(--primary);box-shadow:var(--card-glow);transform:translateY(-4px)}.exam-provider{color:var(--primary);font-size:.85rem;font-weight:600;text-transform:uppercase;letter-spacing:.5px;margin-bottom:12px}.exam-title{font-size:1.25rem;font-weight:700;margin-bottom:16px}.exam-meta{display:flex;gap:16px;color:var(--text-muted);font-size:.9rem;margin-bottom:20px}.exam-tags{display:flex;gap:8px;flex-wrap:wrap}.exam-tag{padding:6px 12px;background:var(--bg-elevated);border-radius:6px;font-size:.8rem;color:var(--text-secondary)}.exam-interface{padding:40px 0}.exam-topbar{display:flex;justify-content:space-between;align-items:center;padding:20px 28px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--card-radius);margin-bottom:28px}.exam-progress{flex:1;margin:0 32px}.progress-bar{height:6px;background:var(--bg-elevated);border-radius:3px;overflow:hidden}.progress-fill{height:100%;background:var(--primary-gradient);border-radius:3px;transition:width .3s ease}.exam-timer{font-size:1.1rem;font-weight:700;color:var(--error);font-family:SF Mono,monospace}.question-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--card-radius);padding:40px;margin-bottom:28px}.question-text{font-size:1.3rem;font-weight:600;line-height:1.6;margin-bottom:32px}.options-grid{display:grid;gap:14px}.option-card{display:flex;align-items:center;padding:20px 24px;background:var(--bg-elevated);border:2px solid var(--border);border-radius:var(--button-radius);cursor:pointer;transition:var(--transition-fast)}.option-card:hover{border-color:var(--primary);background:rgba(59,130,246,.1)}.option-card.selected{border-color:var(--primary);background:var(--primary);color:#fff}.option-letter{width:32px;height:32px;border-radius:8px;background:var(--bg-card);display:flex;align-items:center;justify-content:center;font-weight:700;margin-right:16px;flex-shrink:0}.option-card.selected .option-letter{background:white;color:var(--primary)}.exam-nav{display:flex;justify-content:space-between;padding-top:24px}.results-container{padding:80px 0}.results-card{max-width:600px;margin:0 auto;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--card-radius);padding:60px 40px;text-align:center}.results-icon{font-size:5rem;margin-bottom:24px}.results-score{font-size:5rem;font-weight:900;background:var(--primary-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:12px}.results-status{font-size:1.5rem;font-weight:700;margin-bottom:32px}.results-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin:40px 0}.stat-box{padding:20px;background:var(--bg-elevated);border-radius:var(--button-radius)}.stat-value{font-size:2rem;font-weight:800;color:var(--primary)}.stat-label{color:var(--text-secondary);font-size:.9rem;margin-top:8px}.results-cta{margin-top:40px;padding:24px;background:linear-gradient(135deg,rgba(139,92,246,.1) 0%,rgba(59,130,246,.1) 100%);border:1px solid rgba(139,92,246,.3);border-radius:var(--card-radius)}.results-cta h4{font-size:1.1rem;margin-bottom:8px}.results-cta p{color:var(--text-secondary);margin-bottom:16px}.dashboard-grid{display:grid;grid-template-columns:2fr 1fr;gap:var(--grid-gap);padding:60px 0}.dashboard-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--grid-gap);margin-bottom:40px}.stat-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--card-radius);padding:28px}.stat-card-icon{font-size:2rem;margin-bottom:16px}.stat-card-value{font-size:2.5rem;font-weight:800;color:var(--primary)}.stat-card-label{color:var(--text-secondary);font-size:.95rem;margin-top:8px}.chart-placeholder{height:200px;background:var(--bg-elevated);border-radius:var(--button-radius);display:flex;align-items:center;justify-content:center;color:var(--text-muted)}.history-list{display:flex;flex-direction:column;gap:16px}.history-item{display:flex;justify-content:space-between;align-items:center;padding:20px;background:var(--bg-elevated);border-radius:var(--button-radius)}.history-name{font-weight:600}.history-date{color:var(--text-muted);font-size:.85rem}.history-score{font-weight:700;color:var(--success)}.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--grid-gap);padding:60px 0}.pricing-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--card-radius);padding:40px 32px;position:relative;transition:var(--transition)}.pricing-card:hover{border-color:var(--primary);transform:translateY(-4px)}.pricing-card.recommended{border-color:var(--accent);box-shadow:0 0 40px #8b5cf633}.pricing-badge{position:absolute;top:16px;right:16px;padding:6px 12px;background:var(--accent);color:#fff;border-radius:6px;font-size:.75rem;font-weight:700;text-transform:uppercase}.pricing-tier{font-size:1.1rem;font-weight:600;margin-bottom:8px}.pricing-price{font-size:3rem;font-weight:900;margin-bottom:8px}.pricing-period{color:var(--text-secondary);margin-bottom:32px}.pricing-features{list-style:none;margin-bottom:32px}.pricing-features li{padding:12px 0;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:12px}.pricing-features li:before{content:"✓";color:var(--success);font-weight:700}.pricing-features li.disabled{opacity:.5}.pricing-features li.disabled:before{content:"✗";color:var(--text-muted)}.skeleton{background:linear-gradient(90deg,var(--bg-card) 25%,var(--bg-elevated) 50%,var(--bg-card) 75%);background-size:200% 100%;animation:skeleton-loading 1.5s infinite;border-radius:8px}@keyframes skeleton-loading{0%{background-position:200% 0}to{background-position:-200% 0}}.skeleton-text{height:20px;margin-bottom:12px}.skeleton-title{height:32px;width:60%;margin-bottom:20px}.skeleton-card{height:200px;margin-bottom:24px}.mobile-menu-btn{display:none;background:transparent;border:none;color:var(--text-primary);font-size:1.5rem;cursor:pointer;padding:8px}@media (max-width: 1024px){.hero-content{grid-template-columns:1fr}.feature-grid{grid-template-columns:repeat(2,1fr)}.dashboard-grid,.pricing-grid{grid-template-columns:1fr}}@media (max-width: 768px){.header-nav{display:none}.mobile-menu-btn{display:block}.hero-title{font-size:2.5rem}.feature-grid,.dashboard-stats{grid-template-columns:1fr}.exam-topbar{flex-direction:column;gap:16px}.exam-progress{margin:0;width:100%}}@keyframes pulse{0%,to{opacity:.1}50%{opacity:.2}}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.animate-fadeIn{animation:fadeIn .6s ease-out}.animate-pulse{animation:pulse 4s ease-in-out infinite}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--bg-primary);color:var(--text-primary);transition:background-color .3s ease,color .3s ease}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}.catalog-page{padding:24px;max-width:1400px;margin:0 auto}.catalog-page h1{font-size:2rem;margin-bottom:24px;color:var(--text-primary)}.cert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px}.cert-card{background-color:var(--bg-card);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow);transition:all .3s ease;border:1px solid var(--border)}.cert-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}.cert-card.disabled{opacity:.6;filter:grayscale(.8)}.cert-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:12px}.cert-header h3{font-size:1.25rem;color:var(--text-primary);flex:1}.difficulty{padding:4px 12px;border-radius:var(--radius-sm);font-size:.75rem;font-weight:600;text-transform:uppercase}.difficulty.beginner{background-color:var(--success-bg);color:var(--success)}.difficulty.intermediate{background-color:var(--warning-bg);color:var(--warning)}.difficulty.advanced{background-color:var(--error-bg);color:var(--error)}.provider{color:var(--text-secondary);font-size:.875rem;margin-bottom:8px}.description{color:var(--text-secondary);font-size:.875rem;line-height:1.5;margin-bottom:16px}.cert-meta{display:flex;gap:16px;margin-bottom:16px;font-size:.875rem;color:var(--text-muted)}.cert-actions{display:flex;gap:12px;align-items:center}.badge-soon{padding:8px 16px;background-color:var(--secondary);color:#fff;border-radius:var(--radius);font-weight:600}.exam-page{max-width:800px;margin:0 auto;padding:24px}.exam-header{display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:center;margin-bottom:24px;padding-bottom:16px;border-bottom:1px solid var(--border)}.timer{font-size:1.25rem;font-weight:600;color:var(--primary)}.progress{font-size:1rem;color:var(--text-secondary)}.question-indicators{display:flex;flex-wrap:wrap;gap:8px;width:100%;margin-top:12px}.question-indicators .indicator{width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:50%;background-color:var(--bg-secondary);color:var(--text-secondary);font-size:.75rem;font-weight:600;cursor:pointer;transition:all .2s ease;border:2px solid var(--border)}.question-indicators .indicator.answered{background-color:var(--primary);color:#fff;border-color:var(--primary)}.question-indicators .indicator.unanswered{background-color:var(--bg-secondary);color:var(--text-muted);border-color:var(--border)}.question-indicators .indicator.current{transform:scale(1.2);box-shadow:var(--shadow)}.question-container{background-color:var(--bg-card);padding:32px;border-radius:var(--radius-lg);box-shadow:var(--shadow);margin-bottom:24px}.question-container h3{font-size:1.25rem;margin-bottom:24px;color:var(--text-primary);line-height:1.6}.options{display:flex;flex-direction:column;gap:12px}.options label{display:flex;align-items:center;padding:16px;background-color:var(--bg-secondary);border-radius:var(--radius);cursor:pointer;transition:all .2s ease;border:2px solid var(--border)}.options label:hover{background-color:var(--bg-primary);border-color:var(--primary)}.options label.selected{background-color:var(--primary);color:#fff;border-color:var(--primary)}.options label input{margin-right:12px;accent-color:var(--primary)}.exam-navigation{display:flex;gap:12px;justify-content:center}.exam-navigation button{padding:12px 24px;font-size:1rem;font-weight:600;border-radius:var(--radius);cursor:pointer;transition:all .2s ease}.score-card{background-color:var(--bg-card);padding:48px;border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);text-align:center;max-width:600px;margin:48px auto}.score-card.passed{border:2px solid var(--success)}.score-card.failed{border:2px solid var(--error)}.score-percentage{font-size:4rem;font-weight:700;color:var(--primary);margin:24px 0}.score-label{font-size:1.5rem;font-weight:600;margin-bottom:16px}.exam-review-page{max-width:1000px;margin:0 auto;padding:24px}.review-controls{display:flex;gap:16px;align-items:center;margin:24px 0;padding:16px;background-color:var(--bg-secondary);border-radius:var(--radius)}.toggle-wrong{display:flex;align-items:center;gap:8px;font-weight:500}.review-list{display:flex;flex-direction:column;gap:24px;margin-top:24px}.review-item{background-color:var(--bg-card);padding:24px;border-radius:var(--radius-lg);box-shadow:var(--shadow);border-left:4px solid var(--border)}.review-item.correct{border-left-color:var(--success)}.review-item.incorrect{border-left-color:var(--error)}.review-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;flex-wrap:wrap;gap:12px}.question-number{font-weight:600;color:var(--text-primary)}.result-badge{padding:4px 12px;border-radius:var(--radius-sm);font-size:.875rem;font-weight:600}.result-badge.correct{background-color:var(--success-bg);color:var(--success)}.result-badge.incorrect{background-color:var(--error-bg);color:var(--error)}.time-spent{color:var(--text-muted);font-size:.875rem}.question-text{font-size:1.125rem;margin-bottom:16px;color:var(--text-primary);line-height:1.6}.options-review{display:flex;flex-direction:column;gap:8px}.options-review .option{padding:12px 16px;background-color:var(--bg-secondary);border-radius:var(--radius);display:flex;align-items:center;gap:12px}.options-review .option.correct-answer{background-color:var(--success-bg);border:1px solid var(--success)}.options-review .option.wrong-answer{background-color:var(--error-bg);border:1px solid var(--error)}.option-letter{font-weight:700;width:24px;height:24px;display:flex;align-items:center;justify-content:center;background-color:var(--bg-primary);border-radius:50%;font-size:.75rem}.answer-label{margin-left:auto;font-size:.75rem;font-weight:600;padding:2px 8px;border-radius:var(--radius-sm)}.answer-label.correct{background-color:var(--success);color:#fff}.answer-label.wrong{background-color:var(--error);color:#fff}.explanation-box{margin-top:16px;padding:16px;background-color:var(--bg-secondary);border-radius:var(--radius);border-left:3px solid var(--primary)}.explanation-box strong{display:block;margin-bottom:8px;color:var(--primary)}.explanation-box p{color:var(--text-secondary);line-height:1.6}.review-footer{display:flex;gap:12px;justify-content:center;margin-top:32px;padding-top:24px;border-top:1px solid var(--border)}@media (max-width: 768px){.cert-grid{grid-template-columns:1fr}.exam-header{flex-direction:column;align-items:flex-start}.score-card{padding:24px;margin:24px auto}.score-percentage{font-size:3rem}.review-controls,.review-header{flex-direction:column;align-items:flex-start}}