@font-face{font-family:'Inter';font-style:normal;font-weight:100 900;font-display:swap;src:url('/fonts/inter.woff2') format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:100 800;font-display:optional;src:url('/fonts/jetbrains-mono.woff2') format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:'Inter-fallback';src:local('Arial');size-adjust:107%;ascent-override:90%;descent-override:22%;line-gap-override:0%}:root{--bg-primary:#0a0a0a;--bg-secondary:#111111;--bg-tertiary:#1a1a1a;--bg-card:#111111;--bg-card-hover:#1a1a1a;--text-primary:#fafafa;--text-secondary:#a1a1a1;--text-muted:#94a3b8;--accent-primary:#fafafa;--accent-secondary:#3b82f6;--accent-success:#22c55e;--accent-warning:#f97316;--accent-danger:#ef4444;--border-color:#262626;--border-light:#1a1a1a;--shadow-sm:0 1px 2px rgba(0,0,0,0.3);--shadow-md:0 4px 16px rgba(0,0,0,0.4);--shadow-lg:0 8px 32px rgba(0,0,0,0.5);--shadow-card:0 4px 24px rgba(0,0,0,0.3);--space-xs:0.25rem;--space-sm:0.5rem;--space-md:1rem;--space-lg:1.5rem;--space-xl:2rem;--space-2xl:3rem;--space-3xl:4rem;--space-4xl:6rem;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:24px;--radius-2xl:32px;--radius-full:9999px;--font-main:'Inter','Inter-fallback',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;--font-mono:'JetBrains Mono','Fira Code','Consolas',monospace;--transition-fast:0.15s ease;--transition-normal:0.25s ease;--transition-slow:0.4s ease}[data-theme="light"]{--bg-primary:#fafafa;--bg-secondary:#f0f0f0;--bg-tertiary:#e8e8e8;--bg-card:#ffffff;--bg-card-hover:#f5f5f5;--text-primary:#1a1a1a;--text-secondary:#4a4a4a;--text-muted:#6a6a6a;--accent-primary:#1a1a1a;--accent-secondary:#2563eb;--border-color:#ddd;--border-light:#e8e8e8;--shadow-sm:0 1px 3px rgba(0,0,0,0.08);--shadow-md:0 4px 12px rgba(0,0,0,0.1);--shadow-lg:0 8px 24px rgba(0,0,0,0.12);--shadow-card:0 2px 8px rgba(0,0,0,0.06)}*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth}body{font-family:var(--font-main);background-color:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;overflow-x:hidden}html.theme-transition,html.theme-transition body,html.theme-transition .header,html.theme-transition .footer,html.theme-transition .card,html.theme-transition .module-card,html.theme-transition .feature-card,html.theme-transition .cert-card,html.theme-transition .btn,html.theme-transition input,html.theme-transition select,html.theme-transition textarea,html.theme-transition .preview-code,html.theme-transition .preview-header,html.theme-transition .preview-question,html.theme-transition .preview-tab,html.theme-transition .nav-link,html.theme-transition h1,html.theme-transition h2,html.theme-transition h3,html.theme-transition h4,html.theme-transition h5,html.theme-transition h6,html.theme-transition p,html.theme-transition span,html.theme-transition a,html.theme-transition li,html.theme-transition strong,html.theme-transition b,html.theme-transition em,html.theme-transition i,html.theme-transition .card-title,html.theme-transition .card-description,html.theme-transition .logo,html.theme-transition .logo-icon{transition:background-color var(--transition-normal),color var(--transition-normal),border-color var(--transition-normal),box-shadow var(--transition-normal) !important}.certifications-section{content-visibility:auto;contain-intrinsic-size:auto 340px}.comparison-table{content-visibility:auto;contain-intrinsic-size:auto 400px}.footer{content-visibility:auto;contain-intrinsic-size:auto 250px}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.2;margin-bottom:var(--space-md);letter-spacing:-0.02em}h1{font-size:clamp(2.5rem,6vw,4rem)}section h1,article h1,aside h1,nav h1{font-size:clamp(2.5rem,6vw,4rem)}h2{font-size:clamp(2rem,4vw,3rem)}h3{font-size:clamp(1.5rem,3vw,2rem)}p{color:var(--text-secondary);margin-bottom:var(--space-md)}a{color:var(--text-primary);text-decoration:none;transition:opacity var(--transition-fast)}a:hover{opacity:0.8}code{font-family:var(--font-mono);background:var(--bg-tertiary);padding:0.2em 0.4em;border-radius:var(--radius-sm);font-size:0.9em}.container{max-width:1200px;margin:0 auto;padding:0 var(--space-lg)}.header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(10,10,10,0.9);backdrop-filter:blur(20px);border-bottom:1px solid var(--border-color);padding:var(--space-md) 0;transition:background-color var(--transition-normal)}[data-theme="light"] .header{background:rgba(255,255,255,0.9)}@media (max-width:768px){.header{border-bottom:none;box-shadow:none}}.header-content{display:flex;justify-content:space-between;align-items:center}.logo{display:flex;align-items:center;gap:var(--space-sm);font-weight:700;font-size:1.25rem;color:var(--text-primary);text-decoration:none}.logo-icon{font-size:1.5rem}.nav{display:flex;align-items:center;gap:var(--space-lg)}.nav-link{color:var(--text-secondary);font-weight:500;font-size:0.9375rem;transition:color var(--transition-fast);text-decoration:none;display:inline-block;min-width:max-content}.nav-link:hover,.nav-link.active{color:var(--text-primary);opacity:1}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-md) var(--space-xl);font-family:var(--font-main);font-size:1rem;font-weight:600;border-radius:var(--radius-full);border:none;cursor:pointer;transition:opacity var(--transition-normal),transform var(--transition-normal),background-color var(--transition-normal),color var(--transition-normal),border-color var(--transition-normal);text-decoration:none}.btn-primary{background:var(--text-primary);color:var(--bg-primary)}.btn-primary{will-change:transform,opacity}.btn-primary:hover{opacity:0.9;transform:translateY(-2px)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color)}.btn-secondary:hover{background:var(--bg-secondary);border-color:var(--text-muted)}.btn-outline{background:transparent;color:var(--text-primary);border:1px solid var(--border-color)}.btn-outline:hover{border-color:var(--text-primary);background:var(--bg-secondary)}.btn-sm{padding:var(--space-sm) var(--space-lg);font-size:0.875rem}.btn-lg{padding:var(--space-lg) var(--space-2xl);font-size:1.125rem}.hero{padding:calc(80px + var(--space-4xl)) 0 var(--space-4xl);position:relative;overflow:hidden}.hero-content{display:grid;grid-template-columns:40fr 60fr;gap:var(--space-3xl);align-items:center}.hero-text{max-width:600px}.hero-title{font-size:clamp(1.75rem,3.5vw,2.45rem);font-weight:800;line-height:1.1;margin-bottom:var(--space-lg);letter-spacing:-0.03em}.hero-subtitle{font-size:1.25rem;color:var(--text-secondary);margin-bottom:var(--space-xl);line-height:1.6}.hero-actions{display:flex;gap:var(--space-md);flex-wrap:wrap}.hero-preview{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-2xl);box-shadow:var(--shadow-lg);overflow:hidden}.preview-header{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-md) var(--space-lg);background:var(--bg-secondary);border-bottom:1px solid var(--border-color)}.preview-dot{width:12px;height:12px;border-radius:50%}.preview-dot.red{background:#ef4444}.preview-dot.yellow{background:#f59e0b}.preview-dot.green{background:#22c55e}.preview-tabs{display:flex;gap:var(--space-md);margin-left:var(--space-lg)}.preview-tab{padding:var(--space-xs) var(--space-sm);font-size:0.8125rem;color:var(--text-muted);border-radius:var(--radius-sm)}.preview-tab.active{background:var(--bg-tertiary);color:var(--text-primary)}.preview-content{display:grid;grid-template-columns:1fr 1fr;min-height:300px}.preview-question{padding:var(--space-xl);border-right:1px solid var(--border-color)}.preview-question h4{font-size:1rem;margin-bottom:var(--space-md)}.preview-question p{font-size:0.875rem;color:var(--text-secondary)}.preview-code{background:#0a0a0a;padding:var(--space-lg);font-family:var(--font-mono);font-size:0.75rem;line-height:1.5;color:#e5e5e5;overflow-x:auto}[data-theme="light"] .preview-code{background:#1e293b}.preview-code .keyword{color:#f472b6}.preview-code .function{color:#60a5fa}.preview-code .string{color:#4ade80}.preview-code .number{color:#fb923c}.section{padding:var(--space-4xl) 0;contain:layout style}#modules{min-height:600px}#modules .section-header{min-height:100px}#exams-section{min-height:460px;contain:layout style}#exams-section .modules-grid{min-height:220px}.hero-preview{min-height:465px}.preview-code{min-height:250px}.section-header{text-align:center;max-width:700px;margin:0 auto var(--space-3xl)}.section-title{font-size:clamp(2rem,4vw,2.5rem);margin-bottom:var(--space-md)}.section-subtitle{font-size:1.125rem;color:var(--text-secondary)}.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-xl)}.feature-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-xl);padding:var(--space-xl);transition:transform var(--transition-normal),background-color var(--transition-normal),border-color var(--transition-normal),box-shadow var(--transition-normal)}.feature-card{will-change:transform}.feature-card:hover{transform:translateY(-4px);border-color:var(--text-muted)}.feature-icon{width:64px;height:64px;display:flex;align-items:center;justify-content:center;background:var(--bg-secondary);border-radius:var(--radius-lg);font-size:2rem;margin-bottom:var(--space-lg)}.feature-title{font-size:1.25rem;margin-bottom:var(--space-sm)}.feature-text{color:var(--text-secondary);font-size:0.9375rem}.modules-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:var(--space-xl);min-height:400px}.module-card{display:flex;flex-direction:column;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-xl);padding:var(--space-xl);text-decoration:none;color:var(--text-primary);transition:transform var(--transition-normal),background-color var(--transition-normal),border-color var(--transition-normal),box-shadow var(--transition-normal);cursor:pointer}.module-card{will-change:transform}.module-card:hover{transform:translateY(-4px);border-color:var(--text-muted);opacity:1}.card-header{display:flex;align-items:flex-start;gap:var(--space-md);margin-bottom:var(--space-lg);justify-content:space-between}.card-header-intro{display:flex;align-items:center;gap:var(--space-md)}.card-header-addons{display:flex;align-items:flex-start;flex-shrink:0}.question-count-badge{display:inline-flex;align-items:center;padding:4px 8px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-full);font-size:0.75rem;font-weight:500;color:var(--text-muted);white-space:nowrap;transition:background-color var(--transition-fast),border-color var(--transition-fast),color var(--transition-fast)}.module-card:hover .question-count-badge{border-color:var(--text-muted);color:var(--text-primary);background:var(--bg-secondary)}.card-icon{width:56px;height:56px;display:flex;align-items:center;justify-content:center;background:var(--bg-secondary);border-radius:var(--radius-lg);font-size:1.75rem}.card-title{font-size:1.25rem;font-weight:600;margin-bottom:0}.card-description{color:var(--text-secondary);font-size:0.9375rem;margin-bottom:var(--space-lg)}.card-meta{display:flex;gap:var(--space-lg);color:var(--text-muted);font-size:0.875rem}.card-meta-item{display:flex;align-items:center;gap:var(--space-xs)}.module-progress{margin-top:var(--space-lg);padding-top:var(--space-lg);border-top:1px solid var(--border-color)}.progress-bar{height:6px;background:var(--bg-tertiary);border-radius:var(--radius-full);overflow:hidden;margin-bottom:var(--space-sm)}.progress-fill{height:100%;background:var(--accent-secondary);border-radius:var(--radius-full);transition:width var(--transition-slow)}.progress-text{display:flex;justify-content:space-between;font-size:0.8125rem;color:var(--text-muted)}.show-more-container{display:flex;justify-content:center;padding:var(--space-2xl) 0;margin-top:var(--space-lg);transition:opacity 0.3s ease,transform 0.3s ease}.show-more-btn{display:inline-flex;align-items:center;gap:var(--space-sm);padding:var(--space-lg) var(--space-2xl);background:linear-gradient(135deg,#3b82f6 0%,#2563eb 100%);color:#ffffff;font-size:1.125rem;font-weight:600;border:none;border-radius:var(--radius-full);cursor:pointer;box-shadow:0 4px 20px rgba(59,130,246,0.35);transition:transform 0.25s ease,box-shadow 0.25s ease,background 0.25s ease;will-change:transform}.show-more-btn:hover{transform:translateY(-3px) scale(1.02);box-shadow:0 8px 30px rgba(59,130,246,0.45);background:linear-gradient(135deg,#60a5fa 0%,#3b82f6 100%)}.show-more-btn:active{transform:translateY(-1px) scale(0.99)}.show-more-icon{font-size:1.25rem}.show-more-text{font-weight:600}.show-more-count{opacity:0.85;font-weight:500;font-size:1rem;margin-left:var(--space-xs)}[data-theme="light"] .show-more-btn{box-shadow:0 4px 20px rgba(37,99,235,0.25)}[data-theme="light"] .show-more-btn:hover{box-shadow:0 8px 30px rgba(37,99,235,0.35)}@media (max-width:768px){.show-more-container{padding:var(--space-xl) var(--space-md)}.show-more-btn{padding:var(--space-md) var(--space-xl);font-size:1rem;width:100%;max-width:320px;justify-content:center}.show-more-icon{font-size:1.125rem}}.certifications-section{background:var(--bg-secondary);padding:var(--space-4xl) 0;overflow:hidden;contain:layout style}.certifications-section .section-header{min-height:90px}.certifications-section .section-title{font-size:2.5rem}.certifications-carousel{position:relative;width:100%;overflow:hidden;padding:var(--space-lg) 0}.certifications-carousel::before,.certifications-carousel::after{content:'';position:absolute;top:0;bottom:0;width:150px;z-index:2;pointer-events:none}.certifications-carousel::before{left:0;background:linear-gradient(to right,var(--bg-secondary),transparent)}.certifications-carousel::after{right:0;background:linear-gradient(to left,var(--bg-secondary),transparent)}.certifications-track{display:flex;gap:var(--space-lg);animation:scroll-certifications 40s linear infinite;width:max-content;will-change:transform}.certifications-track:hover{animation-play-state:paused}@keyframes scroll-certifications{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}.cert-card{flex-shrink:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:0.5rem;width:180px;height:120px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-xl);padding:var(--space-lg);transition:transform 0.3s ease,border-color 0.3s ease,box-shadow 0.3s ease;position:relative;overflow:hidden;will-change:transform}.cert-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,#3b82f6,#8b5cf6,#06b6d4);opacity:0;transition:opacity 0.3s ease}.cert-card:hover{transform:translateY(-8px) scale(1.02);border-color:rgba(59,130,246,0.5);box-shadow:0 20px 40px rgba(0,0,0,0.3),0 0 30px rgba(59,130,246,0.1)}.cert-card:hover::before{opacity:1}.cert-provider{font-size:0.75rem;font-weight:500;text-transform:uppercase;letter-spacing:0.1em;color:var(--text-muted)}.cert-name{font-size:1.5rem;font-weight:700;background:linear-gradient(135deg,var(--text-primary),var(--accent-secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}[data-theme="light"] .certifications-carousel::before{background:linear-gradient(to right,var(--bg-secondary),transparent)}[data-theme="light"] .certifications-carousel::after{background:linear-gradient(to left,var(--bg-secondary),transparent)}@media (max-width:768px){.certifications-section .section-header{min-height:100px}.certifications-section .section-title{font-size:2rem}.cert-card{width:150px;height:100px}.cert-name{font-size:1.25rem}.certifications-carousel::before,.certifications-carousel::after{width:60px}}.comparison-table{width:100%;border-collapse:collapse;background:var(--bg-card);border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--shadow-card)}.comparison-table th,.comparison-table td{padding:var(--space-lg);text-align:center}.comparison-table th{background:var(--bg-secondary);font-weight:600;color:var(--text-secondary);border-bottom:1px solid var(--border-color)}.comparison-table td{border-bottom:1px solid var(--border-color)}.comparison-table tr:last-child td{border-bottom:none}.comparison-table .feature-name{text-align:left;font-weight:500}.check-icon{color:var(--accent-success)}.cross-icon{color:var(--text-muted)}.theme-toggle{display:flex;align-items:center;gap:var(--space-xs);background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-full);padding:var(--space-xs)}.theme-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border:none;background:transparent;border-radius:var(--radius-full);cursor:pointer;color:var(--text-muted);transition:color var(--transition-fast);font-size:1rem}.theme-btn:hover{color:var(--text-primary)}.theme-btn.active{background:var(--bg-tertiary);color:var(--text-primary)}.footer{background:var(--bg-secondary);border-top:1px solid var(--border-color);padding:var(--space-2xl) 0;margin-top:var(--space-4xl)}.footer-content{display:flex;justify-content:space-between;align-items:center}.footer-text{color:var(--text-muted);font-size:0.875rem}.footer-links{display:flex;align-items:center;gap:var(--space-lg)}.footer-link{color:var(--text-muted);font-size:0.875rem;transition:color var(--transition-fast)}.footer-link:hover{color:var(--text-primary);opacity:1}.quiz-container{max-width:1200px;margin:0 auto;padding:calc(80px + var(--space-2xl)) var(--space-lg) var(--space-2xl)}.quiz-header{text-align:center;margin-bottom:var(--space-2xl)}.quiz-title{font-size:clamp(1.5rem,3vw,2rem);margin-bottom:var(--space-sm)}.quiz-progress{display:flex;align-items:center;justify-content:center;gap:var(--space-lg);margin-bottom:var(--space-xl)}.progress-pill{display:inline-flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);background:var(--bg-secondary);border-radius:var(--radius-full);font-size:0.875rem;color:var(--text-secondary)}.question-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-xl);padding:var(--space-xl);box-shadow:var(--shadow-card)}.question-number{display:inline-block;padding:var(--space-xs) var(--space-md);background:var(--bg-secondary);border-radius:var(--radius-full);font-size:0.875rem;color:var(--text-muted);margin-bottom:var(--space-lg)}.question-text{font-size:1.25rem;font-weight:600;margin-bottom:var(--space-xl);line-height:1.5}.options-list{display:flex;flex-direction:column;gap:var(--space-md)}.option{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-lg);background:var(--bg-secondary);border:1px solid transparent;border-radius:var(--radius-lg);cursor:pointer;transition:background-color var(--transition-fast),border-color var(--transition-fast)}.option:hover:not(.disabled){background:var(--bg-tertiary);border-color:var(--border-color)}.option.selected{border-color:var(--accent-secondary);background:rgba(59,130,246,0.1)}.option.correct{border-color:var(--accent-success);background:rgba(34,197,94,0.1)}.option.incorrect{border-color:var(--accent-danger);background:rgba(239,68,68,0.1)}.option.disabled{cursor:default}.option-letter{width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);font-weight:600;font-size:0.875rem}.option.selected .option-letter{background:var(--accent-secondary);border-color:var(--accent-secondary);color:white}.option.correct .option-letter{background:var(--accent-success);border-color:var(--accent-success);color:white}.option.incorrect .option-letter{background:var(--accent-danger);border-color:var(--accent-danger);color:white}.explanation-box{margin-top:var(--space-xl);padding:var(--space-lg);background:rgba(59,130,246,0.1);border-left:4px solid var(--accent-secondary);border-radius:0 var(--radius-md) var(--radius-md) 0}@media (max-width:768px){.quiz-container{padding-left:4px;padding-right:4px}.question-card,.explanation-tab-content{padding:0 !important;border:none;border-radius:0;box-shadow:none}.explanation-box{padding:var(--space-md) !important;margin-top:var(--space-sm);border-radius:0;border-left-width:3px;margin-left:0;margin-right:0}}.explanation-title{font-weight:600;margin-bottom:var(--space-sm);color:var(--accent-secondary)}.explanation-text{color:var(--text-secondary);margin:0}.quiz-actions{display:flex;justify-content:space-between;align-items:center;gap:var(--space-md);margin-top:var(--space-xl);padding-top:var(--space-xl);border-top:1px solid var(--border-color)}.quiz-actions .btn{flex-shrink:0;white-space:nowrap;overflow:visible;min-width:0}.results-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-2xl);padding:var(--space-3xl);text-align:center;box-shadow:var(--shadow-lg)}.results-score{font-size:4rem;font-weight:800;margin-bottom:var(--space-md)}.results-score.excellent{color:var(--accent-success)}.results-score.good{color:var(--accent-secondary)}.results-score.average{color:var(--accent-warning)}.results-score.low{color:var(--accent-danger)}.results-message{font-size:1.5rem;margin-bottom:var(--space-2xl)}.results-stats{display:flex;justify-content:center;gap:var(--space-3xl);margin-bottom:var(--space-2xl)}.stat-item{text-align:center}.stat-value{font-size:2rem;font-weight:700;color:var(--text-primary)}.stat-label{font-size:0.875rem;color:var(--text-muted)}.results-actions{display:flex;justify-content:center;gap:var(--space-md);flex-wrap:wrap}.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:calc(80px + var(--space-2xl)) var(--space-lg)}.auth-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-2xl);padding:var(--space-2xl);width:100%;max-width:440px;box-shadow:var(--shadow-lg)}.auth-header{text-align:center;margin-bottom:var(--space-xl)}.auth-title{font-size:1.75rem;margin-bottom:var(--space-sm)}.auth-subtitle{color:var(--text-secondary)}.form-group{margin-bottom:var(--space-lg)}.form-label{display:block;margin-bottom:var(--space-sm);font-weight:500;color:var(--text-primary)}.form-input,.form-select,.form-textarea{width:100%;padding:var(--space-md);background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);font-size:1rem;font-family:var(--font-main);transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--text-muted)}.form-input::placeholder{color:var(--text-muted)}.form-textarea{min-height:120px;resize:vertical}.code-viewer{background:#0a0a0a;border-radius:var(--radius-lg);overflow:hidden;font-family:var(--font-mono);font-size:0.875rem}.code-viewer-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-md) var(--space-lg);background:#111111;border-bottom:1px solid #262626}.code-language{color:#60a5fa;font-size:0.8125rem;font-weight:500}.code-content{padding:var(--space-lg);overflow-x:auto;line-height:1.7}.code-line{display:flex}.line-number{color:#525252;text-align:right;padding-right:var(--space-lg);min-width:40px;user-select:none}.line-content{color:#e5e5e5}.syntax-keyword{color:#f472b6}.syntax-function{color:#60a5fa}.syntax-string{color:#4ade80}.syntax-comment{color:#525252;font-style:italic}.syntax-number{color:#fb923c}.syntax-type{color:#22d3ee}.syntax-operator{color:#f472b6}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,0.8);backdrop-filter:blur(4px);display:none;align-items:center;justify-content:center;z-index:2000;padding:var(--space-lg)}.modal-overlay.active{display:flex}.modal-content{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-xl);padding:var(--space-xl);width:100%;max-width:480px;box-shadow:var(--shadow-lg)}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-xl)}.modal-title{font-size:1.25rem;margin:0}.modal-close{background:none;border:none;font-size:1.5rem;color:var(--text-muted);cursor:pointer;padding:var(--space-sm);border-radius:var(--radius-md);transition:background-color var(--transition-fast),color var(--transition-fast)}.modal-close:hover{background:var(--bg-secondary);color:var(--text-primary)}.hidden{display:none !important}.text-center{text-align:center}.text-muted{color:var(--text-muted)}.text-success{color:var(--accent-success)}.text-danger{color:var(--accent-danger)}.mb-sm{margin-bottom:var(--space-sm)}.mb-md{margin-bottom:var(--space-md)}.mb-lg{margin-bottom:var(--space-lg)}.mb-xl{margin-bottom:var(--space-xl)}.mt-lg{margin-top:var(--space-lg)}.mt-xl{margin-top:var(--space-xl)}@keyframes fadeIn{from{opacity:0}to{opacity:1}}@keyframes slideUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeIn 0.5s ease forwards}.animate-slide-up{animation:slideUp 0.5s ease forwards}@media (max-width:1024px){.hero-content{grid-template-columns:1fr}.hero-preview{display:none}.features-grid{grid-template-columns:1fr}.rankings-content{grid-template-columns:1fr}}@media (max-width:768px){.header-content{flex-wrap:wrap;gap:var(--space-md)}.nav{order:3;width:100%;justify-content:center;gap:var(--space-md)}.hero-actions{flex-direction:column}.footer-content{flex-direction:column;gap:var(--space-lg);text-align:center}.results-stats{flex-direction:column;gap:var(--space-lg)}.quiz-actions{flex-wrap:wrap;justify-content:center;gap:var(--space-md)}.quiz-actions .btn{overflow:visible}}.difficulty-container{display:flex;align-items:center;gap:var(--space-sm);margin-bottom:var(--space-md)}.difficulty-label{font-size:0.75rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:0.05em}.difficulty-stars{display:flex;gap:2px}.difficulty-star{width:12px;height:12px;border-radius:2px;background:var(--bg-tertiary);transition:background-color var(--transition-fast)}.difficulty-star.filled{background:var(--star-color,var(--accent-secondary))}.difficulty-1 .difficulty-star.filled,.difficulty-2 .difficulty-star.filled{--star-color:#22c55e}.difficulty-3 .difficulty-star.filled,.difficulty-4 .difficulty-star.filled{--star-color:#84cc16}.difficulty-5 .difficulty-star.filled,.difficulty-6 .difficulty-star.filled{--star-color:#eab308}.difficulty-7 .difficulty-star.filled,.difficulty-8 .difficulty-star.filled{--star-color:#f97316}.difficulty-9 .difficulty-star.filled,.difficulty-10 .difficulty-star.filled{--star-color:#ef4444}.question-image{width:100%;max-width:600px;margin:var(--space-lg) auto;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border-color)}.question-image img{width:100%;height:auto;display:block}.question-code{background:#0d1117;border-radius:var(--radius-lg);overflow:hidden;margin:var(--space-lg) 0;border:1px solid var(--border-color)}.question-code-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-sm) var(--space-md);background:#161b22;border-bottom:1px solid #30363d}.question-code-lang{font-family:var(--font-mono);font-size:0.75rem;color:#7d8590;text-transform:uppercase}.question-code-content{padding:var(--space-md);overflow-x:auto;font-family:var(--font-mono);font-size:0.875rem;line-height:1.6;color:#e6edf3}.question-code-content pre{margin:0;white-space:pre-wrap;word-break:break-word}.question-code .keyword{color:#ff7b72}.question-code .string{color:#a5d6ff}.question-code .function{color:#d2a8ff}.question-code .comment{color:#8b949e}.question-code .number{color:#79c0ff}.footer{background:var(--bg-secondary);border-top:1px solid var(--border-color);padding:var(--space-xl) 0;margin-top:auto}.footer-content{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:var(--space-lg)}.footer-text{color:var(--text-muted);font-size:0.875rem}.footer-links{display:flex;align-items:center;gap:var(--space-lg);flex-wrap:wrap}.footer-link{color:var(--text-secondary);font-size:0.875rem;transition:color var(--transition-fast)}.footer-link:hover{color:var(--text-primary)}.theme-toggle{display:flex;gap:var(--space-xs);background:var(--bg-tertiary);padding:4px;border-radius:var(--radius-full)}.theme-btn{width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:transparent;border:none;border-radius:var(--radius-full);font-size:1.25rem;cursor:pointer;transition:background-color var(--transition-fast),transform var(--transition-fast);color:var(--text-secondary);will-change:transform}.theme-btn:hover{background:var(--bg-card);transform:scale(1.1)}.theme-btn.active{background:var(--bg-card);box-shadow:var(--shadow-sm)}@media (max-width:768px){.footer-content{flex-direction:column;text-align:center}.footer-links{justify-content:center}}.option-btn{display:flex;align-items:center;gap:var(--space-md);width:100%;padding:var(--space-lg);background:transparent;border:1px solid var(--border-color);border-radius:var(--radius-lg);color:var(--text-primary);font-size:1rem;cursor:pointer;transition:background-color var(--transition-fast),border-color var(--transition-fast);text-align:left;margin-bottom:var(--space-md)}.option-btn:hover:not(:disabled){border-color:var(--text-muted);background:var(--bg-secondary)}.option-btn.selected{border-color:var(--accent-secondary);background:rgba(37,99,235,0.1)}.option-btn.correct{border-color:var(--accent-success);background:rgba(34,197,94,0.1)}.option-btn.incorrect{border-color:var(--accent-danger);background:rgba(239,68,68,0.1)}.option-btn:disabled{cursor:not-allowed;opacity:0.8}.option-letter{display:flex;align-items:center;justify-content:center;width:32px;height:32px;background:var(--bg-secondary);border-radius:var(--radius-md);font-weight:600;font-size:0.875rem;flex-shrink:0}.option-btn.selected .option-letter{background:var(--accent-secondary);color:white}.option-btn.correct .option-letter{background:var(--accent-success);color:white}.option-btn.incorrect .option-letter{background:var(--accent-danger);color:white}.legal-page{padding:calc(80px + var(--space-3xl)) 0 var(--space-4xl);min-height:100vh}.legal-header{text-align:center;margin-bottom:var(--space-3xl)}.legal-header h1{font-size:clamp(2rem,4vw,3rem);margin-bottom:var(--space-md)}.legal-updated{color:var(--text-muted);font-size:0.9375rem}.legal-content{max-width:800px;margin:0 auto}.legal-section{margin-bottom:var(--space-3xl)}.legal-section h2{font-size:1.25rem;color:var(--text-primary);margin-bottom:var(--space-md);padding-bottom:var(--space-sm);border-bottom:1px solid var(--border-color)}.legal-section p{font-size:0.9375rem;line-height:1.7;color:var(--text-secondary);margin-bottom:var(--space-md)}.legal-section ul{list-style:disc;padding-left:var(--space-lg);margin:0 0 var(--space-md) 0}.legal-section li{position:static;padding-left:0;margin-bottom:var(--space-sm);font-size:0.9375rem;color:var(--text-secondary);line-height:1.6}.legal-section li::before{content:none}.legal-section li strong{color:var(--text-primary)}.legal-section a{color:var(--accent-secondary);text-decoration:underline;text-decoration-color:transparent;transition:text-decoration-color var(--transition-fast)}.legal-section a:hover{text-decoration-color:var(--accent-secondary);opacity:1}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:var(--space-3xl);margin-bottom:var(--space-2xl);padding-bottom:var(--space-2xl);border-bottom:1px solid var(--border-color)}.footer-section h3,.footer-section h4{font-size:0.875rem;font-weight:600;color:var(--text-primary);margin-bottom:var(--space-md);text-transform:uppercase;letter-spacing:0.05em}.footer-tagline{font-size:0.9375rem;color:var(--text-secondary);margin-top:var(--space-md);margin-bottom:0}.footer-list{list-style:none;padding:0;margin:0}.footer-list li{margin-bottom:var(--space-sm)}.footer-list a{color:var(--text-muted);font-size:0.875rem;transition:color var(--transition-fast);text-decoration:none}.footer-list a:hover{color:var(--text-primary);opacity:1}.footer-list a.footer-link--discord,.footer-list a[href*="discord.gg"]{color:#818cf8}.footer-list a.footer-link--discord:hover,.footer-list a[href*="discord.gg"]:hover{color:#a5b4fc;filter:brightness(1.2)}.footer-list a.footer-link--telegram,.footer-list a[href*="t.me"]{color:#38bdf8}.footer-list a.footer-link--telegram:hover,.footer-list a[href*="t.me"]:hover{color:#7dd3fc;filter:brightness(1.2)}.footer-list a.footer-link--reddit,.footer-list a[href*="reddit.com"]{color:#fb923c}.footer-list a.footer-link--reddit:hover,.footer-list a[href*="reddit.com"]:hover{color:#fdba74;filter:brightness(1.2)}.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:var(--space-md)}.footer-credit{display:flex;align-items:center;gap:1.5rem}.footer-text{color:var(--text-secondary);font-size:0.875rem;line-height:1.5;margin:0}.footer-markdown-link{color:var(--text-muted);font-size:0.75rem;line-height:1.4;text-decoration:underline;text-decoration-color:rgba(148,163,184,0.4);text-underline-offset:4px;transition:color var(--transition-fast),text-decoration-color var(--transition-fast);display:inline-flex;align-items:center}[data-theme="light"] .footer-markdown-link{color:var(--text-muted);text-decoration-color:rgba(106,106,106,0.4)}.footer-markdown-link:hover,.footer-markdown-link:focus-visible{color:var(--text-primary);text-decoration-color:var(--text-primary)}@media (max-width:768px){.footer-grid .footer-section:first-child{display:none !important}.footer-grid{grid-template-columns:repeat(3,1fr);gap:var(--space-md) var(--space-md);text-align:left;margin-bottom:var(--space-lg);padding-bottom:var(--space-lg)}.footer-section:nth-child(2){order:1;margin-left:-0.45rem}.footer-section:nth-child(3){order:2;padding-left:0.45rem}.footer-section:nth-child(4){order:3;padding-left:0.95rem}.footer-section h3,.footer-section h4{font-size:calc(0.75rem * 1.512);margin-bottom:var(--space-sm);letter-spacing:0.04em}.footer-list li{margin-bottom:var(--space-xs)}.footer-list a{font-size:calc(0.75rem * 1.512);line-height:1.45;padding:0.12rem 0;display:block}.footer-bottom{flex-direction:column;align-items:center;text-align:center;gap:var(--space-md)}.footer-credit{flex-direction:column;align-items:center;gap:var(--space-xs)}.footer-text{font-size:calc(0.875rem * 1.512)}.footer-markdown-link{display:none !important}}@media (max-width:480px){.footer-grid{grid-template-columns:repeat(3,1fr);gap:var(--space-md) 0.5rem}.footer-section:nth-child(2){margin-left:-0.45rem}.footer-section:nth-child(3){padding-left:0.45rem}.footer-section:nth-child(4){padding-left:0.95rem}.footer-section h3,.footer-section h4{font-size:calc(0.7rem * 1.512)}.footer-list a{font-size:calc(0.72rem * 1.512);line-height:1.45;padding:0.12rem 0}.footer-text{font-size:calc(0.85rem * 1.512)}}.donation-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,0.85);z-index:2000;align-items:center;justify-content:center;backdrop-filter:blur(5px)}.donation-overlay.active{display:flex}.donation-modal{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:var(--space-2xl);max-width:500px;width:90%;text-align:center;position:relative;box-shadow:var(--shadow-2xl)}.donation-icon{font-size:3.5rem;margin-bottom:var(--space-lg);display:inline-block;animation:bounce 2s infinite}@keyframes bounce{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}.donation-title{font-size:1.75rem;margin-bottom:var(--space-md);color:var(--text-primary);font-weight:800}.donation-text{color:var(--text-secondary);margin-bottom:var(--space-lg);line-height:1.6;font-size:1rem}.highlight-text{color:var(--accent-success);font-weight:700}.top-donors{background:var(--bg-tertiary);border-radius:var(--radius-md);padding:var(--space-md);margin-bottom:var(--space-xl);max-height:200px;overflow-y:auto;text-align:left}.top-donors h4{font-size:0.9rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:0.05em;margin-bottom:var(--space-sm);text-align:center}.donor-item{display:flex;justify-content:space-between;padding:0.5rem 0.75rem;border-bottom:1px solid var(--border-color);font-size:0.95rem}.donor-item:last-child{border-bottom:none}.donor-name{font-weight:600;color:var(--text-primary)}.donor-item:nth-child(2) .donor-name::before{content:'\1F947 '}.donor-item:nth-child(3) .donor-name::before{content:'\1F948 '}.donor-item:nth-child(4) .donor-name::before{content:'\1F949 '}.donor-amount{color:var(--accent-success);font-family:var(--font-mono);font-weight:700}.contact-links{display:flex;flex-direction:column;gap:var(--space-sm)}.contact-link{display:flex;align-items:center;justify-content:center;gap:var(--space-md);padding:var(--space-md);border-radius:var(--radius-md);text-decoration:none;font-weight:600;color:white;transition:transform 0.2s,box-shadow 0.2s}.contact-link:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,0.2);opacity:0.9}.contact-link.discord{background:#5865F2}.contact-link.reddit{background:#FF4500}.modal-close-btn{margin-top:var(--space-lg);background:transparent;border:1px solid var(--border-color);color:var(--text-muted);padding:0.5rem 1rem;border-radius:var(--radius-sm);cursor:pointer;font-size:0.85rem;transition:color 0.2s,border-color 0.2s}.modal-close-btn:hover{color:var(--text-primary);border-color:var(--text-primary)}.mobile-menu-toggle{display:none}@media (max-width:768px){.container{padding:0 var(--space-md)}.header{padding:0.5rem 0}.header-content{position:relative;padding:0 var(--space-md)}.mobile-menu-toggle{display:flex;flex-direction:column;justify-content:space-between;width:44px;height:44px;padding:10px 7px;background:transparent;border:none;cursor:pointer;z-index:2005;order:3;-webkit-tap-highlight-color:transparent;position:relative;pointer-events:auto}.mobile-menu-toggle .bar{width:30px;height:3px;background-color:var(--text-primary);border-radius:2px;transition:transform 0.3s ease-in-out,opacity 0.3s ease-in-out;will-change:transform}.mobile-menu-toggle.active .bar:nth-child(1){transform:translateY(10.5px) rotate(45deg)}.mobile-menu-toggle.active .bar:nth-child(2){opacity:0}.mobile-menu-toggle.active .bar:nth-child(3){transform:translateY(-10.5px) rotate(-45deg)}.logo{z-index:2002;position:relative}.nav{position:fixed;top:60px;left:0;right:0;bottom:auto;height:auto;background:var(--bg-primary);border-bottom:1px solid var(--border-color);box-shadow:0 10px 40px rgba(0,0,0,0.5);flex-direction:column;justify-content:flex-start;align-items:center;padding:var(--space-xl) var(--space-md);opacity:0;visibility:hidden;transform:translateY(-10px);transition:opacity 0.25s cubic-bezier(0.16,1,0.3,1),visibility 0.25s,transform 0.25s cubic-bezier(0.16,1,0.3,1);will-change:transform,opacity;z-index:1000}.nav{background-color:rgba(10,10,10,0.95) !important;backdrop-filter:blur(10px)}[data-theme='light'] .nav{background-color:rgba(255,255,255,0.95) !important}.nav.active{transform:translateY(0);opacity:1;visibility:visible}.nav-link{font-size:1.75rem;font-weight:700}.nav button{display:flex !important;width:100%;margin-top:var(--space-md);padding:var(--space-md);font-size:1rem;justify-content:center}.hero{padding-top:100px;padding-bottom:var(--space-xl);text-align:center}.hero-content{grid-template-columns:1fr;gap:var(--space-xl);text-align:center}.hero-text{margin:0 auto;width:100%}.hero-title{font-size:2.25rem;margin-left:auto;margin-right:auto;line-height:1.2}.hero-actions{justify-content:center}.hero-preview{margin-top:var(--space-lg)}.features-grid,.modules-grid,.donate-stats-grid{display:flex;flex-direction:column;gap:var(--space-lg)}#modules{min-height:800px}.modules-grid{min-height:600px}.module-card,.feature-card{width:100%;margin:0}.preview-content{grid-template-columns:1fr}.preview-question{border-right:none;border-bottom:1px solid var(--border-color)}.quiz-container{padding-top:80px}.quiz-header{margin-bottom:var(--space-sm);padding:0}.question-card .card-tabs{padding:0 var(--space-sm)}.tab-btn{padding:var(--space-md) var(--space-sm);font-size:0.8rem}.quiz-module-name{font-size:0.9rem;padding:0.25rem 0.75rem}.quiz-question-count{padding:0.25rem 0.6rem;font-size:0.8rem;min-width:36px}.question-text{font-size:1.1rem !important;padding:var(--space-md) var(--space-lg) !important;line-height:1.4}.options-list{padding:0 var(--space-lg) var(--space-lg) !important;display:grid;gap:var(--space-sm)}.option-btn{padding:var(--space-md);margin-bottom:0;font-size:0.9rem;min-height:auto}.difficulty-container{padding:var(--space-md) var(--space-lg) 0 !important;margin-bottom:var(--space-xs)}.question-number{padding:0 var(--space-lg) !important;font-size:0.8rem}.explanation-box{margin:0 var(--space-lg) var(--space-xl) !important;padding:var(--space-md) !important}.explanation-text{font-size:0.95rem;padding:0}.report-btn{padding:0.4rem;width:32px;height:32px;justify-content:center;border-radius:50%;gap:0}.report-text-label{display:none}.modal-overlay{padding:var(--space-md);align-items:flex-start;overflow-y:auto}.modal-content{margin:20px auto;padding:var(--space-lg);max-height:none;overflow:visible}.report-textarea{min-height:120px;font-size:1rem}.report-options{gap:0.5rem}.report-option{padding:0.5rem 0.75rem}}.mobile-cta{display:none !important}@media (max-width:768px){.mobile-cta{display:inline-flex !important;order:2;margin-left:16px;margin-right:auto;padding:0.4rem 0.8rem;font-size:0.85rem;height:32px;min-height:0;align-items:center;border-radius:var(--radius-full);text-decoration:none;font-weight:600}.header-content{display:flex;align-items:center}.nav .btn{display:none}}.certification-detail-page{position:relative;overflow:hidden}.certification-detail-page::before{content:"PWNHERO.COM";position:fixed;top:50%;left:50%;transform:translate(-50%,-50%) rotate(-45deg);font-size:15vw;font-weight:900;color:var(--text-primary);opacity:0.03;pointer-events:none;z-index:0;white-space:nowrap;user-select:none;font-family:var(--font-main)}.cert-detail-header{position:relative}.cert-detail-header::after{content:"Written by Aotrx";display:inline-block;margin-top:0.5rem;font-size:0.85rem;font-weight:600;color:var(--accent-secondary);font-family:var(--font-mono);opacity:0.9;letter-spacing:0.05em;background:rgba(59,130,246,0.1);padding:0.25rem 0.75rem;border-radius:var(--radius-full);border:1px solid rgba(59,130,246,0.2)}