@import"https://esm.sh/@tldraw/tldraw@2.1.4/tldraw.css";:root{--background-dark: #111827;--background-light: #1F2937;--text-primary: #F9FAFB;--text-secondary: #9CA3AF;--accent: #38BDF8;--accent-fg: #111827;--border-color: #374151;--shadow-color: rgba(0, 0, 0, .2);--hero-gradient-start: #38BDF8;--hero-gradient-end: #A78BFA;--error-color: #F87171;--success-color: #34D399}[data-theme=light]{--background-dark: #F9FBFF;--background-light: #FFFFFF;--sidebar-bg: #F0F9FF;--text-primary: #111827;--text-secondary: #6B7280;--accent: #3B82F6;--accent-fg: #fff;--border-color: #F3F4F6;--shadow-color: rgba(0, 0, 0, .05);--hero-gradient-start: #3B82F6;--hero-gradient-end: #8B5CF6;--error-color: #EF4444;--success-color: #10B981;--card-bg-cyan: #D1F1F5;--card-bg-green: #D9F2E9;--card-bg-blue: #DDEBFF;--card-bg-purple: #E9E7FF;--card-bg-pink: #FDE8E8;--card-color-1: var(--card-bg-cyan);--card-color-2: var(--card-bg-green);--card-color-3: var(--card-bg-blue);--card-color-4: var(--card-bg-pink);--card-color-5: var(--card-bg-purple)}[data-theme=light] .features-carousel-track>.feature-item,[data-theme=light] .stories-grid>.story-card,[data-theme=light] .team-grid>.team-member-card,[data-theme=light] .pricing-grid>.pricing-card,[data-theme=light] .learn-path-grid>.learn-path-card,[data-theme=light] .learn-path-grid>.language-card,[data-theme=light] .prepare-grid>.topic-card,[data-theme=light] .cheatsheet-grid>.topic-card,[data-theme=light] .interview-selection-grid>.interview-selection-card,[data-theme=light] .history-list>.history-card,[data-theme=light] .referral-stats>.stat-card,[data-theme=light] .instruction-cards>.instruction-card,[data-theme=light] .get-started-options>.get-started-option,[data-theme=light] .interview-type-grid>.interview-type-button,[data-theme=light] .difficulty-options>.difficulty-button,[data-theme=light] .profile-container .card,[data-theme=light] .dashboard-container .card{border-color:transparent}[data-theme=light] .features-carousel-track>.feature-item:nth-child(5n+1),[data-theme=light] .stories-grid>.story-card:nth-child(5n+1),[data-theme=light] .team-grid>.team-member-card:nth-child(5n+1),[data-theme=light] .pricing-grid>.pricing-card:nth-child(5n+1),[data-theme=light] .learn-path-grid>.learn-path-card:nth-child(5n+1),[data-theme=light] .learn-path-grid>.language-card:nth-child(5n+1),[data-theme=light] .prepare-grid>.topic-card:nth-child(5n+1),[data-theme=light] .cheatsheet-grid>.topic-card:nth-child(5n+1),[data-theme=light] .interview-selection-grid>.interview-selection-card:nth-child(5n+1),[data-theme=light] .history-list>.history-card:nth-child(5n+1),[data-theme=light] .referral-stats>.stat-card:nth-child(5n+1),[data-theme=light] .instruction-cards>.instruction-card:nth-child(5n+1),[data-theme=light] .get-started-options>.get-started-option:nth-child(5n+1),[data-theme=light] .interview-type-grid>.interview-type-button:nth-child(5n+1),[data-theme=light] .difficulty-options>.difficulty-button:nth-child(5n+1),[data-theme=light] .profile-container .card:nth-of-type(5n+1),[data-theme=light] .dashboard-container .card:nth-of-type(5n+1){background-color:var(--card-color-1)}[data-theme=light] .features-carousel-track>.feature-item:nth-child(5n+2),[data-theme=light] .stories-grid>.story-card:nth-child(5n+2),[data-theme=light] .team-grid>.team-member-card:nth-child(5n+2),[data-theme=light] .pricing-grid>.pricing-card:nth-child(5n+2),[data-theme=light] .learn-path-grid>.learn-path-card:nth-child(5n+2),[data-theme=light] .learn-path-grid>.language-card:nth-child(5n+2),[data-theme=light] .prepare-grid>.topic-card:nth-child(5n+2),[data-theme=light] .cheatsheet-grid>.topic-card:nth-child(5n+2),[data-theme=light] .interview-selection-grid>.interview-selection-card:nth-child(5n+2),[data-theme=light] .history-list>.history-card:nth-child(5n+2),[data-theme=light] .referral-stats>.stat-card:nth-child(5n+2),[data-theme=light] .instruction-cards>.instruction-card:nth-child(5n+2),[data-theme=light] .get-started-options>.get-started-option:nth-child(5n+2),[data-theme=light] .interview-type-grid>.interview-type-button:nth-child(5n+2),[data-theme=light] .difficulty-options>.difficulty-button:nth-child(5n+2),[data-theme=light] .profile-container .card:nth-of-type(5n+2),[data-theme=light] .dashboard-container .card:nth-of-type(5n+2){background-color:var(--card-color-2)}[data-theme=light] .features-carousel-track>.feature-item:nth-child(5n+3),[data-theme=light] .stories-grid>.story-card:nth-child(5n+3),[data-theme=light] .team-grid>.team-member-card:nth-child(5n+3),[data-theme=light] .pricing-grid>.pricing-card:nth-child(5n+3),[data-theme=light] .learn-path-grid>.learn-path-card:nth-child(5n+3),[data-theme=light] .learn-path-grid>.language-card:nth-child(5n+3),[data-theme=light] .prepare-grid>.topic-card:nth-child(5n+3),[data-theme=light] .cheatsheet-grid>.topic-card:nth-child(5n+3),[data-theme=light] .interview-selection-grid>.interview-selection-card:nth-child(5n+3),[data-theme=light] .history-list>.history-card:nth-child(5n+3),[data-theme=light] .referral-stats>.stat-card:nth-child(5n+3),[data-theme=light] .instruction-cards>.instruction-card:nth-child(5n+3),[data-theme=light] .get-started-options>.get-started-option:nth-child(5n+3),[data-theme=light] .interview-type-grid>.interview-type-button:nth-child(5n+3),[data-theme=light] .difficulty-options>.difficulty-button:nth-child(5n+3),[data-theme=light] .profile-container .card:nth-of-type(5n+3),[data-theme=light] .dashboard-container .card:nth-of-type(5n+3){background-color:var(--card-color-3)}[data-theme=light] .features-carousel-track>.feature-item:nth-child(5n+4),[data-theme=light] .stories-grid>.story-card:nth-child(5n+4),[data-theme=light] .team-grid>.team-member-card:nth-child(5n+4),[data-theme=light] .pricing-grid>.pricing-card:nth-child(5n+4),[data-theme=light] .learn-path-grid>.learn-path-card:nth-child(5n+4),[data-theme=light] .learn-path-grid>.language-card:nth-child(5n+4),[data-theme=light] .prepare-grid>.topic-card:nth-child(5n+4),[data-theme=light] .cheatsheet-grid>.topic-card:nth-child(5n+4),[data-theme=light] .interview-selection-grid>.interview-selection-card:nth-child(5n+4),[data-theme=light] .history-list>.history-card:nth-child(5n+4),[data-theme=light] .referral-stats>.stat-card:nth-child(5n+4),[data-theme=light] .instruction-cards>.instruction-card:nth-child(5n+4),[data-theme=light] .get-started-options>.get-started-option:nth-child(5n+4),[data-theme=light] .interview-type-grid>.interview-type-button:nth-child(5n+4),[data-theme=light] .difficulty-options>.difficulty-button:nth-child(5n+4),[data-theme=light] .profile-container .card:nth-of-type(5n+4),[data-theme=light] .dashboard-container .card:nth-of-type(5n+4){background-color:var(--card-color-4)}[data-theme=light] .features-carousel-track>.feature-item:nth-child(5n+5),[data-theme=light] .stories-grid>.story-card:nth-child(5n+5),[data-theme=light] .team-grid>.team-member-card:nth-child(5n+5),[data-theme=light] .pricing-grid>.pricing-card:nth-child(5n+5),[data-theme=light] .learn-path-grid>.learn-path-card:nth-child(5n+5),[data-theme=light] .learn-path-grid>.language-card:nth-child(5n+5),[data-theme=light] .prepare-grid>.topic-card:nth-child(5n+5),[data-theme=light] .cheatsheet-grid>.topic-card:nth-child(5n+5),[data-theme=light] .interview-selection-grid>.interview-selection-card:nth-child(5n+5),[data-theme=light] .history-list>.history-card:nth-child(5n+5),[data-theme=light] .referral-stats>.stat-card:nth-child(5n+5),[data-theme=light] .instruction-cards>.instruction-card:nth-child(5n+5),[data-theme=light] .get-started-options>.get-started-option:nth-child(5n+5),[data-theme=light] .interview-type-grid>.interview-type-button:nth-child(5n+5),[data-theme=light] .difficulty-options>.difficulty-button:nth-child(5n+5),[data-theme=light] .profile-container .card:nth-of-type(5n+5),[data-theme=light] .dashboard-container .card:nth-of-type(5n+5){background-color:var(--card-color-5)}[data-theme=z-black]{--background-dark: #000000;--background-light: #111111;--sidebar-bg: #0a0a0a;--text-primary: #EAEAEA;--text-secondary: #999999;--accent: #08D9D6;--accent-fg: #000;--border-color: #222222;--shadow-color: rgba(255, 255, 255, .05);--hero-gradient-start: #08D9D6;--hero-gradient-end: #FF2E63;--error-color: #FF4141;--success-color: #39FF14}[data-theme=z-black] .continue-card{color:var(--background-dark)}[data-theme=z-black] .continue-card h3,[data-theme=z-black] .continue-card p,[data-theme=z-black] .continue-card p strong,[data-theme=z-black] .continue-card .continue-arrow{color:var(--background-dark)!important}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;background-color:var(--background-dark);color:var(--text-primary);transition:background-color .3s ease,color .3s ease;font-size:16px}html,body{height:100%}body{font-family:Inter,sans-serif;line-height:1.7;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}body.modal-open{overflow:hidden}#app{display:flex;flex-direction:column;min-height:100vh}.container{width:100%;max-width:1440px;margin:0 auto;padding:0 1.5rem}.main-content{flex-grow:1}.section-heading{font-size:2.25rem;font-weight:700;text-align:center;margin-bottom:3rem;color:var(--text-primary)}pre{background-color:var(--background-dark);border:1px solid var(--border-color);padding:1rem;border-radius:.5rem;overflow-x:auto;font-family:Fira Code,Courier New,monospace;font-size:.9rem;color:var(--text-primary)}code{font-family:inherit}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}.panel-toggle{position:absolute;top:1rem;z-index:50;background-color:var(--background-dark);border:1px solid var(--border-color);width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .3s ease-in-out;color:var(--text-secondary);box-shadow:0 2px 5px var(--shadow-color)}.panel-toggle svg{width:20px;height:20px;transition:transform .3s ease-in-out}.panel-toggle:hover{background-color:var(--background-light);border-color:var(--accent);color:var(--accent)}.spinner-large{width:50px;height:50px;border:5px solid var(--border-color);border-top-color:var(--accent);border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 1rem}.floating-nav{position:sticky;bottom:0;z-index:40;margin-top:auto;padding:0;background:none;-webkit-backdrop-filter:none;backdrop-filter:none;border:none;height:0}.go-to-top-button{position:fixed;bottom:2rem;right:calc(3rem + 44px);width:48px;height:48px;border-radius:50%;background-color:var(--accent);color:var(--background-dark);border:none;display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:100;box-shadow:0 4px 12px var(--shadow-color);animation:fadeInScale .3s ease-out;opacity:1;visibility:visible;transform:translateY(0);transition:opacity .3s ease,visibility .3s ease,transform .3s ease}.go-to-top-button:hover{transform:scale(1.1)}.go-to-top-button svg{width:24px;height:24px;stroke:var(--background-dark)}.floating-arrow-nav{position:relative;width:100%;max-width:900px;margin:0 auto}.floating-arrow-nav .arrow-button{background-color:var(--background-dark);border:1px solid var(--border-color);width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text-primary);position:fixed;z-index:45;box-shadow:0 4px 12px var(--shadow-color);opacity:1;visibility:visible;transform:translateY(0);transition:all .2s,opacity .3s ease,visibility .3s ease,transform .3s ease,left .3s ease-in-out}.floating-arrow-nav .arrow-button:first-child{bottom:2rem;left:calc(var(--sidebar-width, 0px) + 2rem)}.floating-arrow-nav .arrow-button:last-child{right:2rem;bottom:2rem}.floating-arrow-nav .arrow-button:hover:not(:disabled){border-color:var(--accent);color:var(--accent);transform:scale(1.1)}.floating-arrow-nav .arrow-button:disabled{opacity:.4;cursor:not-allowed;transform:none;border-color:var(--border-color);color:var(--text-secondary)}.floating-arrow-nav .arrow-button svg{width:24px;height:24px}body.footer-is-visible .go-to-top-button,body.footer-is-visible .floating-arrow-nav .arrow-button{opacity:0;visibility:hidden;transform:translateY(calc(100% + 2rem));pointer-events:none}.continue-card{margin-bottom:2rem;padding:1.5rem;border-radius:.75rem;background:var(--accent);border:1px solid var(--accent);color:#fff;transition:all .2s;display:flex;justify-content:space-between;align-items:center;position:relative}.continue-card:hover{transform:translateY(-3px);box-shadow:0 5px 15px var(--shadow-color)}.continue-card-content h3{font-size:1.2rem;font-weight:600;color:#fff!important;margin-bottom:.25rem}.continue-card-content p,.continue-card-content p strong{color:#fff!important;opacity:.9}.continue-card .continue-arrow{font-size:2rem;color:#fff}.continue-card.is-link{cursor:pointer}@keyframes scaleIn{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}@keyframes backgroundPan{0%{background-position:0% 50%}50%{background-position:100% 50%}to{background-position:0% 50%}}@keyframes pulse-glow{0%{box-shadow:0 0 color-mix(in srgb,var(--accent) 40%,transparent)}70%{box-shadow:0 0 0 10px transparent}to{box-shadow:0 0 0 0 transparent}}.main-content>*:first-child{margin-top:0;padding-top:1rem}.topics-section{padding:5rem 0;background-color:var(--background-light);border-top:1px solid var(--border-color);border-bottom:1px solid var(--border-color)}.topics-header{display:flex;flex-direction:column;align-items:center;justify-content:space-between;gap:1.5rem;margin-bottom:3rem}@media (min-width: 768px){.topics-header{flex-direction:row}}.topics-header .section-heading{margin-bottom:0;text-align:left}.search-container{width:100%;max-width:400px}.search-bar{width:100%;padding:.75rem 1.25rem;font-size:1rem;border-radius:9999px;border:1px solid var(--border-color);background-color:var(--background-dark);color:var(--text-primary);outline:none;transition:border-color .2s,box-shadow .2s,background-color .3s ease;animation:pulse-glow 3.5s infinite 1s}.search-bar:focus{animation:none;border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 30%,transparent)}.no-results{color:var(--text-secondary);grid-column:1 / -1;text-align:center;padding:2rem}.cheatsheet-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.5rem;position:relative;z-index:1}@media (prefers-reduced-motion: no-preference){.cheatsheet-grid .topic-card{animation:fadeInUp .5s ease-out both}.cheatsheet-grid .topic-card:nth-child(1){animation-delay:.05s}.cheatsheet-grid .topic-card:nth-child(2){animation-delay:.1s}.cheatsheet-grid .topic-card:nth-child(3){animation-delay:.15s}.cheatsheet-grid .topic-card:nth-child(4){animation-delay:.2s}.cheatsheet-grid .topic-card:nth-child(5){animation-delay:.25s}.cheatsheet-grid .topic-card:nth-child(6){animation-delay:.3s}.cheatsheet-grid .topic-card:nth-child(7){animation-delay:.35s}.cheatsheet-grid .topic-card:nth-child(8){animation-delay:.4s}}.custom-cheatsheet-section{padding:5rem 0;background-color:var(--background-dark);border-bottom:1px solid var(--border-color)}.cheatsheet-grid-container{scrollbar-width:thin;scrollbar-color:var(--accent) transparent}.cheatsheet-grid-container::-webkit-scrollbar{width:8px}.cheatsheet-grid-container::-webkit-scrollbar-track{background:transparent;margin-block:.5rem}.cheatsheet-grid-container::-webkit-scrollbar-thumb{background-color:var(--accent);border-radius:4px}@media (min-width: 769px){.cheatsheet-grid-container{max-height:33.5rem;overflow-y:auto;overflow-x:hidden;border:1px solid var(--border-color);border-radius:.75rem;padding:1.5rem}}@media (max-width: 768px){.cheatsheet-grid-container{max-height:32rem;overflow-y:auto;overflow-x:hidden;border:1px solid var(--border-color);border-radius:.75rem}.cheatsheet-grid-container .cheatsheet-grid{grid-template-columns:1fr;gap:1rem;padding:1rem}}.header{padding:1rem 0;border-bottom:1px solid var(--border-color);background-color:var(--background-dark);transition:background-color .3s ease,border-color .3s ease;position:sticky;top:0;z-index:100;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background-color:color-mix(in srgb,var(--background-dark) 80%,transparent)}.header .container{display:flex;justify-content:space-between;align-items:center;gap:1rem;position:relative}.logo{font-size:1.5rem;font-weight:700;color:var(--text-primary);text-decoration:none;cursor:pointer;flex-shrink:0}.header-actions{display:flex;align-items:center;gap:.75rem;flex-shrink:0}.header-button{background-color:transparent;border:1px solid var(--border-color);color:var(--text-primary);padding:.5rem 1rem;border-radius:.5rem;font-weight:500;cursor:pointer;transition:all .2s;display:flex;align-items:center;gap:.5rem}.header-button.primary{background-color:var(--accent);border-color:var(--accent);color:var(--background-dark)!important}.header-button:hover{opacity:.85;transform:translateY(-2px)}.user-menu,.get-started-menu{position:relative}.user-menu-button{background-color:var(--background-light);border:1px solid var(--border-color);color:var(--text-primary);padding:.5rem 1rem;border-radius:.5rem;font-weight:500;cursor:pointer;transition:all .2s;display:flex;align-items:center;gap:.5rem}.user-menu-button:hover{border-color:var(--accent);transform:translateY(-2px)}.user-menu-button span{max-width:120px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.dropdown-arrow{font-size:.7em;margin-left:.25rem;transition:transform .2s}.user-menu-dropdown,.get-started-dropdown{position:absolute;top:calc(100% + 10px);right:0;background-color:var(--background-light);border:1px solid var(--border-color);border-radius:.5rem;width:200px;box-shadow:0 5px 15px var(--shadow-color);z-index:110;overflow:hidden;animation:scaleInModal .2s ease-out;padding:.25rem}.dropdown-item{display:block;width:100%;padding:.75rem 1rem;text-align:left;background:none;border:none;border-radius:.25rem;color:var(--text-secondary);cursor:pointer;font-size:.95rem;transition:all .2s}.dropdown-item:hover{background-color:var(--background-dark);color:var(--text-primary)}.dropdown-item.logout{color:var(--error-color)}.dropdown-item.logout:hover{background-color:color-mix(in srgb,var(--error-color) 10%,transparent)}.header-actions.desktop{display:flex}.mobile-menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:.5rem;z-index:120}.hamburger-icon{display:block;width:24px;height:2px;background-color:var(--text-primary);position:relative;transition:background-color .2s ease-in-out}.hamburger-icon:before,.hamburger-icon:after{content:"";position:absolute;width:24px;height:2px;background-color:var(--text-primary);left:0;transition:transform .3s ease,top .3s ease}.hamburger-icon:before{top:-8px}.hamburger-icon:after{top:8px}.mobile-menu-toggle[aria-expanded=true] .hamburger-icon{background-color:transparent}.mobile-menu-toggle[aria-expanded=true] .hamburger-icon:before{transform:rotate(45deg);top:0}.mobile-menu-toggle[aria-expanded=true] .hamburger-icon:after{transform:rotate(-45deg);top:0}.mobile-menu{position:absolute;top:calc(100% + 10px);right:0;background-color:var(--background-light);border:1px solid var(--border-color);border-radius:.75rem;box-shadow:0 8px 25px var(--shadow-color);z-index:110;animation:scaleInModal .2s ease-out;transform-origin:top right;margin-right:.5rem;display:flex;flex-direction:column;gap:.25rem;height:auto;left:auto;-webkit-backdrop-filter:none;backdrop-filter:none;overflow-y:visible}.mobile-menu-item{background:none;border:none;border-radius:.5rem;color:var(--text-secondary);font-size:1rem;font-weight:500;cursor:pointer;padding:.75rem 1rem;transition:all .2s;text-align:left;width:100%}.mobile-menu-item:first-child{border-top:none}.mobile-menu-item:hover{background-color:var(--background-dark);color:var(--text-primary)}.mobile-menu-item.logout{color:var(--error-color);margin-top:.5rem;border-top:1px solid var(--border-color);border-radius:0 0 .5rem .5rem}.mobile-menu-item.logout:hover{color:var(--error-color);background-color:color-mix(in srgb,var(--error-color) 10%,transparent)}@media (max-width: 768px){.header{height:60px;padding:0}.header .container{height:100%;padding:0 1rem}.header-actions.desktop{display:none}.mobile-menu-toggle{display:block}.logo{font-size:1.6rem}}.hero{padding:5rem 0;background-color:var(--background-light);border-bottom:1px solid var(--border-color);overflow:hidden}.hero-grid{display:grid;grid-template-columns:1fr;align-items:center;gap:3rem}.hero-content{text-align:center}.hero-title{font-size:2.75rem;font-weight:800;line-height:1.2;color:var(--text-primary);margin-bottom:1.5rem;animation:fadeInUp .6s 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