.auth-modal-overlay{position:fixed;inset:0;background:#000c;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;justify-content:center;align-items:center;z-index:2000;animation:fadeIn .3s ease}.auth-modal-content{background:var(--color-bg-secondary);border:1px solid var(--color-border);width:90%;max-width:440px;border-radius:20px;padding:40px;position:relative;box-shadow:0 25px 50px -12px #00000080;animation:slideUp .4s cubic-bezier(.16,1,.3,1)}[data-theme=light] .auth-modal-content{background:#fff}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.auth-modal-close{position:absolute;top:20px;right:20px;background:var(--color-bg-primary);border:none;color:var(--color-text-primary);width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s}[data-theme=light] .auth-modal-close{background:#f1f5f9}.auth-modal-close:hover{background:var(--color-bg-secondary);transform:rotate(90deg)}.auth-header{margin-bottom:32px;text-align:center}.auth-header h2{font-size:1.8rem;font-weight:700;margin-bottom:8px;color:var(--color-text-primary)}.auth-header p{color:var(--color-text-secondary);font-size:.95rem}.social-login-group{display:flex;flex-direction:column;gap:12px}.social-btn{display:flex;align-items:center;justify-content:center;gap:12px;padding:12px;border-radius:12px;font-weight:600;font-size:.95rem;cursor:pointer;transition:all .2s;border:1px solid var(--color-border)}.social-btn.github{background:#24292e;color:#fff;border-color:#3f4448}.social-btn.github:hover{background:#1b1f23;transform:translateY(-1px)}[data-theme=light] .social-btn.github{background:#fff;color:#000;border-color:var(--color-border)}[data-theme=light] .social-btn.github:hover{background:#f8fafc}.social-btn.linkedin{background:#0077b5;color:#fff}.social-btn.linkedin:hover{background:#069;transform:translateY(-1px)}.divider{display:flex;align-items:center;margin:24px 0;color:var(--color-text-secondary)}.divider:before,.divider:after{content:"";flex:1;height:1px;background:var(--color-border)}.divider span{padding:0 16px;font-size:.8rem;text-transform:uppercase;letter-spacing:1px;font-weight:500}.email-form{display:flex;flex-direction:column;gap:16px}.input-group{position:relative;display:flex;align-items:center}.input-icon{position:absolute;left:16px;color:var(--color-text-secondary)}.input-group input{width:100%;padding:14px 14px 14px 48px;background:var(--color-bg-primary);border:1px solid var(--color-border);border-radius:12px;color:var(--color-text-primary);font-size:1rem;transition:all .2s}[data-theme=light] .input-group input{background:#f8fafc}.input-group input:focus{outline:none;border-color:var(--color-accent);background:var(--color-bg-secondary)}.submit-btn{background:#24b47e;color:#fff;padding:14px;border-radius:12px;border:none;font-weight:700;font-size:1rem;cursor:pointer;transition:all .2s}.submit-btn:hover:not(:disabled){background:#21a06f;transform:translateY(-1px)}.submit-btn:disabled{opacity:.6;cursor:not-allowed}.status-message{margin-top:16px;padding:12px;border-radius:8px;font-size:.9rem;text-align:center}.status-message.info{background:#3b82f61a;color:#60a5fa}.status-message.error{background:#ef44441a;color:#f87171}.status-message.success{background:#22c55e1a;color:#4ade80}.auth-footer{margin-top:24px;color:var(--color-text-secondary);font-size:.8rem;text-align:center}.profile-header{display:flex;align-items:center;gap:16px;margin-bottom:32px;padding-bottom:24px;border-bottom:1px solid var(--color-border)}.avatar-placeholder{width:56px;height:56px;background:linear-gradient(135deg,#24b47e,#0a8f5f);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:1.5rem;font-weight:700;color:#fff}.profile-info h3{font-size:1.2rem;margin-bottom:4px;color:var(--color-text-primary);font-weight:700}.user-email{color:var(--color-text-secondary);font-size:.9rem}.profile-stats{background:var(--color-bg-primary);padding:16px;border-radius:12px;margin-bottom:32px;border:1px solid var(--color-border)}[data-theme=light] .profile-stats{background:#f8fafc}.stat-item{display:flex;justify-content:space-between;align-items:center}.stat-label{color:var(--color-text-secondary);font-size:.9rem}.stat-value{font-weight:600;color:var(--color-text-primary)}.auth-signout-btn{width:100%;display:flex;align-items:center;justify-content:center;gap:10px;background:transparent;color:#f87171;border:1px solid #451b1b;padding:12px;border-radius:12px;cursor:pointer;font-weight:600;transition:all .2s}[data-theme=light] .auth-signout-btn{border-color:#fee2e2}.auth-signout-btn:hover{background:#f871711a;border-color:#f87171}.top-nav{height:var(--nav-height);background:var(--color-bg-secondary);border-bottom:1px solid var(--color-border);display:flex;align-items:center;position:fixed;top:0;left:0;right:0;z-index:50;box-shadow:0 4px 6px -1px #0000001a}.nav-container{width:100%;max-width:1600px;margin:0 auto;padding:0 var(--spacing-lg);display:flex;justify-content:space-between;align-items:center}.nav-logo{font-weight:700;font-size:1.25rem;color:var(--color-accent);display:flex;align-items:center;gap:var(--spacing-sm);white-space:nowrap}.nav-menu{display:flex;gap:var(--spacing-md)}.nav-item{color:var(--color-text-secondary);font-size:.95rem;font-weight:500;padding:.5rem .75rem;border-radius:6px;transition:all .2s;white-space:nowrap}.nav-item:hover,.nav-item.active{color:var(--color-text-primary);background:#ffffff0d}.nav-item.active{color:var(--color-accent)}.nav-actions{display:flex;align-items:center;gap:var(--spacing-md)}.icon-btn{background:transparent;border:none;color:var(--color-text-secondary);cursor:pointer;padding:4px;border-radius:4px;transition:color .2s}.icon-btn:hover{color:var(--color-text-primary);background:#ffffff0d}.mobile-menu-btn{display:none;background:transparent;border:none;color:var(--color-text-secondary);cursor:pointer;padding:4px;border-radius:4px}@media(max-width:768px){.nav-container{padding:0 var(--spacing-md)}.nav-logo{font-size:1rem}.mobile-menu-btn{display:flex;align-items:center;justify-content:center}.nav-menu{display:none;position:fixed;top:var(--nav-height);left:0;right:0;background:var(--color-bg-secondary);border-bottom:1px solid var(--color-border);flex-direction:column;padding:var(--spacing-md);gap:4px;z-index:100;box-shadow:0 10px 15px -3px #0000004d}.nav-menu.active{display:flex}.nav-item{padding:.75rem 1rem;font-size:1rem;border-radius:8px}.user-btn{display:flex}}.profile-dropdown-container{position:relative;display:inline-block}.user-avatar-sm{width:28px;height:28px;border-radius:50%;background:linear-gradient(135deg,var(--color-accent),#0a8f5f);color:#fff;display:flex;align-items:center;justify-content:center;font-size:.85rem;font-weight:700}.user-avatar-md{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--color-accent),#0a8f5f);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:700}img.user-avatar-img{object-fit:cover;border:2px solid var(--color-accent);background:var(--color-bg-tertiary);transition:transform .2s ease,box-shadow .2s ease}img.user-avatar-img:hover{transform:scale(1.08);box-shadow:0 0 0 3px #00c8964d}img.user-avatar-img.user-avatar-sm{width:28px;height:28px;border-radius:50%}img.user-avatar-img.user-avatar-md{width:40px;height:40px;border-radius:50%}.profile-dropdown{position:absolute;top:calc(100% + 8px);right:0;width:240px;background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:12px;box-shadow:0 10px 25px -5px #00000080;z-index:100;animation:dropFade .2s cubic-bezier(.16,1,.3,1);overflow:hidden}[data-theme=light] .profile-dropdown{background:#fff;box-shadow:0 10px 25px -5px #0000001a}@keyframes dropFade{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.dropdown-header{display:flex;align-items:center;gap:12px;padding:16px;border-bottom:1px solid var(--color-border);background:#ffffff05}[data-theme=light] .dropdown-header{background:#f8fafc}.dropdown-user-info{display:flex;flex-direction:column;overflow:hidden}.dropdown-user-info strong{color:var(--color-text-primary);font-size:.95rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.dropdown-user-info span{color:var(--color-text-secondary);font-size:.8rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.dropdown-body{padding:8px;display:flex;flex-direction:column;gap:4px}.dropdown-item{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:8px;color:var(--color-text-primary);text-decoration:none;transition:all .2s;border:none;background:transparent;width:100%;cursor:pointer;font-size:.95rem;text-align:left}.dropdown-item:hover{background:#ffffff0d}[data-theme=light] .dropdown-item:hover{background:#f1f5f9}.dropdown-item-icon{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:8px;background:#ffffff0d}[data-theme=light] .dropdown-item-icon{background:#e2e8f0}.dropdown-item-text{display:flex;flex-direction:column}.dropdown-item-text span{font-weight:500}.dropdown-item-text small{color:var(--color-text-secondary);font-size:.75rem}.dashboard-icon{color:#8b5cf6}.signout-item{color:#ef4444}.signout-item:hover{background:#ef44441a!important}.signout-icon{color:#ef4444;background:#ef44441a!important}.sidebar{width:var(--sidebar-width);height:calc(100vh - var(--nav-height));position:fixed;top:var(--nav-height);left:0;background-color:var(--color-bg-primary);border-right:1px solid var(--color-border);overflow-y:auto;padding:var(--spacing-lg);display:flex;flex-direction:column;z-index:40;transition:transform .3s ease}.sidebar.empty{justify-content:center;align-items:center;color:var(--color-text-secondary);font-style:italic}.sidebar-header h3{font-size:.8rem;text-transform:uppercase;letter-spacing:.05em;color:var(--color-text-secondary);margin-bottom:var(--spacing-md);margin-top:0}.sidebar-list{display:flex;flex-direction:column;gap:2px}.sidebar-link{display:flex;align-items:center;gap:var(--spacing-sm);padding:6px 10px;color:var(--color-text-primary);font-size:.9rem;border-radius:4px;transition:all .2s;text-decoration:none}.sidebar-link:hover{background:#ffffff08}.sidebar-link.active{background:#38bdf81a;color:var(--color-accent);font-weight:500}.sidebar-icon{opacity:.7}.folder-toggle{display:flex;align-items:center;width:100%;border:none;background:transparent;color:var(--color-text-primary);padding:6px 10px;cursor:pointer;text-align:left;border-radius:4px;font-weight:600;font-size:.9rem}.folder-toggle:hover{background:#ffffff08}.folder-name{margin-left:6px}.folder-content{margin-left:14px;border-left:1px solid var(--color-border);padding-left:4px;margin-top:4px}.premium-link{color:#eab308}.premium-link:hover{color:#fef08a!important}.premium-lock{font-size:.9em;opacity:.8}.sidebar-link.completed{color:#4ade80}.sidebar-link.completed:hover{color:#86efac;background:#22c55e0f}.sidebar-link.completed.active{color:#22c55e;background:#22c55e1f}.completed-icon{color:#22c55e;opacity:1}.sidebar-toggle-btn{display:none;position:fixed;bottom:20px;left:20px;z-index:60;width:48px;height:48px;border-radius:50%;border:none;background:var(--color-accent);color:#0f172a;cursor:pointer;box-shadow:0 4px 12px #38bdf866;align-items:center;justify-content:center;transition:transform .2s,box-shadow .2s}.sidebar-toggle-btn:active{transform:scale(.9)}.sidebar-overlay{display:none}@media(max-width:768px){.sidebar{width:280px;transform:translate(-100%);box-shadow:none}.sidebar.mobile-open{transform:translate(0);box-shadow:4px 0 25px #0006}.sidebar-toggle-btn{display:flex}.sidebar-overlay{display:none;position:fixed;top:var(--nav-height);left:0;right:0;bottom:0;background:#00000080;z-index:35}.sidebar-overlay.visible{display:block}.sidebar-link,.folder-toggle{padding:10px 12px;font-size:.95rem}}.toc{width:var(--toc-width);height:calc(100vh - var(--nav-height));position:fixed;top:var(--nav-height);right:0;background-color:var(--color-bg-primary);border-left:1px solid var(--color-border);overflow-y:auto;padding:var(--spacing-lg);font-size:.9em}.toc-title{font-size:.8em;text-transform:uppercase;color:var(--color-text-secondary);margin-top:0;margin-bottom:var(--spacing-md);letter-spacing:.05em}.toc-list{display:flex;flex-direction:column;gap:var(--spacing-sm)}.toc-item a{display:block;text-decoration:none;color:var(--color-text-secondary);transition:all .2s;padding:4px 0;line-height:1.4;font-size:.9em}.toc-item.active a{color:var(--color-accent)}.toc-item a:hover{color:var(--color-text-primary)}.toc-number{margin-right:4px;font-family:var(--font-family-mono);opacity:.8}.level-1{margin-left:0;font-weight:600;margin-top:12px}.level-2{margin-left:0;font-weight:500;margin-top:8px;color:var(--color-text-primary)}.level-3{margin-left:12px;font-size:.9rem;color:var(--color-text-secondary);margin-top:4px}.level-4{margin-left:24px;font-size:.85rem}.toc::-webkit-scrollbar{width:4px}.highlight-toolbar{position:absolute;transform:translate(-50%) translateY(-100%);z-index:200;animation:highlightFadeIn .15s ease-out}.highlight-toolbar-btn{display:flex;align-items:center;gap:6px;padding:6px 14px;border:none;border-radius:8px;background:linear-gradient(135deg,#fbbf24,#f59e0b);color:#1e1e1e;font-size:.82rem;font-weight:600;cursor:pointer;box-shadow:0 4px 16px #f59e0b66;transition:all .2s ease;white-space:nowrap}.highlight-toolbar-btn:hover{transform:scale(1.05);box-shadow:0 6px 20px #f59e0b80}@keyframes highlightFadeIn{0%{opacity:0;transform:translate(-50%) translateY(-90%)}to{opacity:1;transform:translate(-50%) translateY(-100%)}}.highlight-note-input{position:absolute;transform:translate(-50%);z-index:200;background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:12px;padding:12px 14px;width:260px;box-shadow:0 8px 32px #0000004d;animation:highlightFadeIn .15s ease-out}.note-input-header{display:flex;align-items:center;gap:6px;font-size:.75rem;color:var(--color-text-secondary);margin-bottom:8px}.highlight-note-input input{width:100%;padding:8px 10px;border:1px solid var(--color-border);border-radius:6px;background:#ffffff0d;color:var(--color-text-primary);font-size:.85rem;outline:none;transition:border-color .2s}[data-theme=light] .highlight-note-input input{background:#f8fafc}.highlight-note-input input:focus{border-color:#f59e0b}.note-input-actions{display:flex;align-items:center;justify-content:space-between;margin-top:8px}.note-char-count{font-size:.72rem;color:var(--color-text-secondary);font-family:var(--font-family-mono)}.note-save-btn{padding:5px 16px;border:none;border-radius:6px;background:linear-gradient(135deg,#fbbf24,#f59e0b);color:#1e1e1e;font-size:.8rem;font-weight:600;cursor:pointer;transition:all .2s}.note-save-btn:hover{transform:scale(1.03);box-shadow:0 2px 8px #f59e0b4d}mark.user-highlight{background:#fbbf244d;border-bottom:2px solid #f59e0b;border-radius:2px;padding:0 2px;cursor:pointer;position:relative;transition:background .2s ease}mark.user-highlight:hover{background:#fbbf2473}[data-theme=light] mark.user-highlight{background:#fbbf2459}[data-theme=light] mark.user-highlight:hover{background:#fbbf248c}.highlight-note-badge{display:inline-flex;align-items:center;font-size:.65rem;margin-left:2px;cursor:pointer;vertical-align:super;opacity:.7;transition:opacity .2s}.highlight-note-badge:hover{opacity:1}.highlight-remove-btn{display:none;position:absolute;top:-8px;right:-8px;width:18px;height:18px;background:#ef4444;color:#fff;border-radius:50%;font-size:12px;line-height:18px;text-align:center;cursor:pointer;box-shadow:0 2px 6px #ef444466;transition:transform .15s ease;z-index:10}mark.user-highlight:hover .highlight-remove-btn{display:block}.highlight-remove-btn:hover{transform:scale(1.2)}mark.user-highlight[data-note]:after{content:attr(data-note);display:none;position:absolute;bottom:calc(100% + 6px);left:50%;transform:translate(-50%);padding:4px 10px;background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:6px;font-size:.75rem;color:#fbbf24;white-space:nowrap;max-width:200px;overflow:hidden;text-overflow:ellipsis;box-shadow:0 4px 12px #0000004d;z-index:100;pointer-events:none}mark.user-highlight[data-note]:hover:after{display:block;animation:noteFadeIn .15s ease-out}@keyframes noteFadeIn{0%{opacity:0;transform:translate(-50%) translateY(4px)}to{opacity:1;transform:translate(-50%) translateY(0)}}@media(max-width:768px){.highlight-toolbar-btn{padding:8px 16px;font-size:.85rem}.highlight-note-input{width:240px}}.section-layout{display:flex;height:100vh;width:100%;max-width:1600px;margin:0 auto;overflow:hidden}.content-area{margin-left:var(--sidebar-width);margin-right:var(--toc-width);flex:1;margin-top:var(--nav-height);height:calc(100vh - var(--nav-height));overflow-y:auto;scroll-behavior:smooth;-webkit-overflow-scrolling:touch;padding:var(--spacing-lg) var(--spacing-xl);position:relative}@media(max-width:1200px){.toc{display:none}.content-area{margin-right:0}}@media(max-width:768px){.section-layout{overflow:visible}.content-area{margin-left:0;margin-right:0;padding:var(--spacing-md);height:calc(100vh - var(--nav-height));width:100%;overflow-x:hidden}}.code-block-container{border:1px solid var(--color-border);border-radius:8px;margin:1.5rem 0;background-color:var(--color-bg-primary);overflow:hidden}.code-header{background-color:var(--color-bg-secondary);padding:8px 16px;border-bottom:1px solid var(--color-border);display:flex;align-items:center;justify-content:space-between;font-size:.85rem;color:var(--color-text-secondary);font-family:var(--font-family-mono)}.code-language{display:flex;align-items:center;gap:4px;font-weight:500}.code-content{position:relative;padding:0;background-color:#0d1117;color:#e6edf3}[data-theme=light] .code-content,[data-theme=light] .code-content pre,[data-theme=light] .code-content code,[data-theme=light] .code-content span{background-color:#f6f8fa}.code-content pre{margin:0!important;padding:16px!important;overflow-x:auto;font-family:var(--font-family-mono);font-size:.9em;line-height:1.5;border-radius:0!important;background:transparent!important}@media(max-width:768px){.code-block-container{margin-left:-8px;margin-right:-8px;border-radius:0;border-left:none;border-right:none}.code-content pre{font-size:.8em!important;padding:12px!important}.code-header{padding:6px 12px;font-size:.8rem}}.callout{display:flex;gap:12px;padding:16px;border-radius:8px;margin:1.5rem 0;border-left:4px solid transparent}.callout-icon{flex-shrink:0;margin-top:2px}.callout-body{font-size:.95rem;line-height:1.6}.callout-body :first-child{margin-top:0}.callout-body :last-child{margin-bottom:0}.callout-info{background-color:#3b82f61a;border-left-color:#3b82f6;color:#1e40af}[data-theme=dark] .callout-info{background-color:#3b82f626;color:#93c5fd}.callout-warning{background-color:#f59e0b1a;border-left-color:#f59e0b;color:#92400e}[data-theme=dark] .callout-warning{background-color:#f59e0b26;color:#fcd34d}.callout-success{background-color:#10b9811a;border-left-color:#10b981;color:#065f46}[data-theme=dark] .callout-success{background-color:#10b98126;color:#6ee7b7}.callout-error{background-color:#ef44441a;border-left-color:#ef4444;color:#991b1b}[data-theme=dark] .callout-error{background-color:#ef444433;color:#fca5a5}.callout-tip{background-color:#8b5cf61a;border-left-color:#8b5cf6;color:#5b21b6}[data-theme=dark] .callout-tip{background-color:#8b5cf626;color:#c4b5fd}.tabs-container{margin:1.5rem 0;border-radius:8px;border:1px solid var(--border-color, #e5e7eb);overflow:hidden}.tabs-header{display:flex;background-color:var(--secondary-bg, #f9fafb);border-bottom:1px solid var(--border-color, #e5e7eb);padding:0 8px;overflow-x:auto}.tab-btn{padding:10px 16px;border:none;background:none;font-size:.9rem;font-weight:500;color:var(--text-muted, #6b7280);cursor:pointer;border-bottom:2px solid transparent;transition:all .2s;white-space:nowrap}.tab-btn:hover{color:var(--text-color, #111827)}.tab-btn.active{color:var(--primary-color, #3b82f6);border-bottom-color:var(--primary-color, #3b82f6)}.tab-content{padding:16px;background-color:var(--card-bg, #ffffff)}[data-theme=dark] .tabs-container{border-color:#374151}[data-theme=dark] .tabs-header{background-color:#1f2937;border-bottom-color:#374151}[data-theme=dark] .tab-btn{color:#9ca3af}[data-theme=dark] .tab-btn:hover{color:#f3f4f6}[data-theme=dark] .tab-btn.active{color:#60a5fa;border-bottom-color:#60a5fa}[data-theme=dark] .tab-content{background-color:#111827}.premium-paywall-container{position:relative;margin-top:2rem;padding:3rem 1rem;border:1px solid var(--color-border);border-radius:12px;background-color:var(--color-bg-secondary);display:flex;justify-content:center;align-items:center}[data-theme=light] .premium-paywall-container{background-color:#f8fafc}.premium-paywall-card{display:flex;flex-direction:column;align-items:center;text-align:center;max-width:400px}.lock-icon-container{margin-bottom:1.5rem;color:var(--color-text-secondary)}.premium-paywall-title{font-size:1.5rem;font-weight:700;margin-bottom:.5rem;margin-top:0;color:var(--color-text-primary)}.premium-paywall-card p{color:var(--color-text-secondary);margin-bottom:2rem;font-size:.95rem}.subscribe-btn{background-color:var(--color-accent);color:#fff;font-weight:600;font-size:1rem;border:none;border-radius:8px;padding:12px 32px;cursor:pointer;transition:background-color .2s ease}.subscribe-btn:hover{filter:brightness(.9)}.mdx-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;height:50vh;color:var(--color-text-secondary);text-align:center}.markdown-body{line-height:1.6;max-width:800px;margin:0 auto;padding-bottom:80px;counter-reset:h2counter}.markdown-body h1{font-size:2.25em;font-weight:700;margin-top:2rem;margin-bottom:1rem;padding-bottom:.5rem;border-bottom:1px solid var(--color-border)}.markdown-body h2{font-size:1.75em;font-weight:700;margin-top:3rem;margin-bottom:1.5rem;padding-bottom:.5rem;border-bottom:1px solid var(--color-border);counter-reset:h3counter;display:flex;align-items:center;scroll-margin-top:1rem}.markdown-body h2:before{counter-increment:h2counter;content:counter(h2counter) ". ";color:var(--color-accent);margin-right:.75rem;font-family:var(--font-family-mono);font-weight:400}.markdown-body h3{font-size:1.4em;font-weight:600;margin-top:2rem;margin-bottom:1rem;display:flex;align-items:center;scroll-margin-top:1rem}.markdown-body h3:before{counter-increment:h3counter;content:counter(h2counter) "." counter(h3counter) " ";color:var(--color-accent);margin-right:.75rem;font-family:var(--font-family-mono);font-weight:400;font-size:.9em}.markdown-body p{margin-bottom:1rem;color:var(--color-text-secondary)}.markdown-body code{color:var(--color-accent);background:#ffffff0d;padding:.2rem .4rem;border-radius:4px;font-family:var(--font-family-mono);font-size:.9em}.markdown-body pre{background:var(--color-bg-secondary);padding:1rem;border-radius:8px;overflow-x:auto;border:1px solid var(--color-border);margin-bottom:1.5rem}.markdown-body pre code{background:none;padding:0;color:#e2e8f0}.markdown-body ul{list-style-type:disc;margin-bottom:1rem;padding-left:1.5rem}.markdown-body ol{list-style-type:decimal;margin-bottom:1rem;padding-left:1.5rem}.markdown-body ul ul{list-style-type:circle}.markdown-body ul ul ul{list-style-type:square}.markdown-body li{margin-bottom:.25rem;color:var(--color-text-secondary)}.markdown-body a{color:var(--color-accent);text-decoration:underline;text-underline-offset:2px}.loading{padding:2rem;text-align:center;color:var(--color-text-secondary);font-style:italic}.markdown-body table{width:100%;border-collapse:separate;border-spacing:0;margin:2rem 0;border-radius:8px;overflow:hidden;border:1px solid var(--color-border)}.markdown-body th{background-color:#ffffff1a;color:var(--color-text-primary);font-weight:700;padding:12px 16px;text-align:left;font-size:.95em;border-bottom:2px solid rgba(255,255,255,.1)}[data-theme=light] .markdown-body th{background-color:#0000000d;border-bottom:2px solid rgba(0,0,0,.1)}.markdown-body td{padding:12px 16px;border-bottom:1px solid var(--color-border);color:var(--color-text-secondary);vertical-align:top}.markdown-body tr:last-child td{border-bottom:none}.markdown-body tr:nth-child(2n){background-color:#ffffff08}[data-theme=light] .markdown-body tr:nth-child(2n){background-color:#00000008}.premium-preview-wrapper{position:relative;max-height:450px;overflow:hidden}.premium-preview-wrapper:after{content:"";position:absolute;bottom:0;left:0;width:100%;height:250px;background:linear-gradient(to bottom,transparent,var(--color-bg-primary));pointer-events:none}.topic-navigation-footer{display:flex;align-items:center;justify-content:space-between;margin-top:4rem;padding-top:2rem;border-top:1px solid var(--color-border);gap:16px}.nav-btn{display:flex;align-items:center;gap:8px;padding:10px 16px;border-radius:8px;background:var(--color-bg-secondary);color:var(--color-text-secondary);text-decoration:none!important;font-weight:500;font-size:.95rem;transition:all .2s;border:1px solid var(--color-border)}.nav-btn:hover{color:var(--color-text-primary);border-color:var(--color-accent);background:#ffffff05}[data-theme=light] .nav-btn:hover{background:#f8fafc}.nav-btn-placeholder{width:120px}.mark-complete-btn{display:flex;align-items:center;gap:8px;padding:12px 24px;border-radius:12px;background:transparent;color:var(--color-text-secondary);border:2px solid var(--color-border);font-weight:600;font-size:1rem;cursor:pointer;transition:all .3s ease}.mark-complete-btn:hover:not(:disabled){color:#22c55e;border-color:#22c55e;background:#22c55e1a}.mark-complete-btn.completed{background:#22c55e1a;color:#22c55e;border-color:#22c55e;cursor:default}.icon-success{color:#22c55e;animation:popIn .4s cubic-bezier(.175,.885,.32,1.275)}@keyframes popIn{0%{transform:scale(0);outline:none}50%{transform:scale(1.2)}to{transform:scale(1)}}@media(max-width:768px){.markdown-body{max-width:100%;padding-bottom:60px}.markdown-body h1{font-size:1.5em;word-break:break-word}.markdown-body h2{font-size:1.3em;flex-wrap:wrap}.markdown-body h3{font-size:1.15em;flex-wrap:wrap}.markdown-body table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;white-space:nowrap}.markdown-body th,.markdown-body td{padding:8px 12px;font-size:.85em}.markdown-body pre{margin-left:-var(--spacing-md);margin-right:-var(--spacing-md);border-radius:0}}.landing-layout{min-height:100vh;background:var(--color-bg-primary);padding-top:calc(var(--nav-height) + 60px);padding-bottom:80px;background:radial-gradient(circle at 50% 0%,rgba(34,197,94,.05) 0%,var(--color-bg-primary) 50%)}[data-theme=light] .landing-layout{background:radial-gradient(circle at 50% 0%,#22c55e1a,#f1f5f9 50%)}.landing-container{max-width:1200px;margin:0 auto;padding:0 24px}.landing-hero{text-align:center;margin-bottom:60px}.landing-hero h1{font-size:2.8rem;font-weight:800;color:var(--color-text-primary);margin-bottom:16px;line-height:1.2;letter-spacing:-.05em}.landing-hero p{color:var(--color-text-secondary);font-size:1.15rem;max-width:700px;margin:0 auto;line-height:1.6}.course-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.course-card{background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:12px;overflow:hidden;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;display:flex;flex-direction:column}[data-theme=light] .course-card{background:#fff;box-shadow:0 4px 6px -1px #0000000d}.course-card:hover{transform:translateY(-4px);border-color:#22c55e80;box-shadow:0 10px 25px -5px #0003}[data-theme=light] .course-card:hover{box-shadow:0 10px 25px -5px #0000001a}.card-graphic{height:160px;display:flex;align-items:center;justify-content:center;position:relative;border-bottom:1px solid var(--color-border)}.icon-wrapper{color:#fff;filter:drop-shadow(0 4px 12px rgba(0,0,0,.3));z-index:2}.dsa-gradient{background:linear-gradient(135deg,#134e4a,#064e3b)}.sd-fund-gradient{background:linear-gradient(135deg,#0f172a,#1e3a8a)}.sd-int-gradient{background:linear-gradient(135deg,#4c1d95,#312e81)}.lld-gradient{background:linear-gradient(135deg,#065f46,#022c22)}.devops-gradient{background:linear-gradient(135deg,#991b1b,#7f1d1d)}.fund-gradient{background:linear-gradient(135deg,#b45309,#78350f)}.card-content{padding:24px;flex:1}.card-content h3{margin-top:0;margin-bottom:12px;font-size:1.25rem;font-weight:700;color:var(--color-text-primary)}.card-content p{margin:0;font-size:.95rem;color:var(--color-text-secondary);line-height:1.5}@media(max-width:1024px){.course-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:640px){.landing-hero h1{font-size:2.2rem}.course-grid{grid-template-columns:1fr}}.pricing-container{max-width:1200px;margin:0 auto;padding:8rem 2rem 4rem;color:var(--color-text-primary);font-family:var(--font-family-sans)}.pricing-header{text-align:center;margin-bottom:4rem}.pricing-header h1{font-size:3rem;font-weight:700;margin-bottom:1rem;line-height:1.2;color:var(--color-text-primary)}.pricing-header p{font-size:1.1rem;color:var(--color-text-secondary);max-width:600px;margin:0 auto}.location-hint{margin-top:1rem!important;font-size:.9rem!important;color:var(--color-accent)!important;font-weight:500}.pricing-cards{display:flex;justify-content:center;gap:1.5rem;flex-wrap:wrap;margin-bottom:3rem}.pricing-card{background-color:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:16px;padding:2.5rem;flex:1;min-width:300px;max-width:380px;position:relative;display:flex;flex-direction:column;transition:transform .2s ease,border-color .2s ease}[data-theme=light] .pricing-card{background-color:#fff;box-shadow:0 10px 25px #0000000d}.pricing-card.popular,.pricing-card.best-value{border-color:var(--color-accent)}.popular-badge,.best-value-badge{position:absolute;top:-12px;left:50%;transform:translate(-50%);background-color:var(--color-accent);color:#fff;font-size:.75rem;font-weight:700;padding:4px 12px;border-radius:12px;text-transform:uppercase}.tier-header{margin-bottom:2rem}.tier-header h2{font-size:1.5rem;margin-bottom:.25rem;margin-top:0;color:var(--color-text-primary)}.duration{color:var(--color-text-secondary);font-size:.9rem;display:block;margin-bottom:1rem}.discount-tag{color:var(--color-accent);font-size:.85rem;font-weight:600;margin-bottom:.5rem}.price{font-size:2.5rem;font-weight:700;display:flex;align-items:baseline;gap:.5rem;color:var(--color-text-primary)}.original-price{font-size:1.2rem;color:var(--color-text-secondary);text-decoration:line-through;font-weight:400}.features{list-style:none;padding:0;margin:0 0 2rem;flex-grow:1}.features li{display:flex;align-items:flex-start;gap:.75rem;margin-bottom:1rem;font-size:.95rem;color:var(--color-text-primary)}.features li svg{color:var(--color-accent);flex-shrink:0;margin-top:2px}.pricing-btn{width:100%;padding:1rem;border-radius:8px;font-weight:600;font-size:1rem;cursor:pointer;transition:all .2s ease;border:none}.pricing-btn.primary{background-color:var(--color-accent);color:#fff}[data-theme=light] .pricing-btn.primary{color:#fff}.pricing-btn.primary:hover{filter:brightness(.9)}.pricing-btn.secondary{background-color:transparent;color:var(--color-text-primary);border:1px solid var(--color-border)}.pricing-btn.secondary:hover{background-color:var(--color-bg-secondary)}.pricing-footer{text-align:center;color:var(--color-text-secondary);font-size:.9rem}.pricing-footer a{color:var(--color-accent);text-decoration:none}.pricing-footer a:hover{text-decoration:underline}.premium-status-header{text-align:center;margin-bottom:4rem;display:flex;flex-direction:column;align-items:center}.crown-shimmer{background:radial-gradient(circle,rgba(34,197,94,.2) 0%,transparent 70%);padding:2rem;border-radius:50%;margin-bottom:1rem;animation:shimmer 3s infinite ease-in-out}.premium-crown{color:#22c55e;filter:drop-shadow(0 0 10px rgba(34,197,94,.5))}.subscription-badge{background-color:var(--color-bg-secondary);border:1px solid var(--color-border);padding:.75rem 1.5rem;border-radius:30px;font-size:.95rem;margin-top:1.5rem;color:var(--color-text-secondary)}.subscription-badge strong{color:var(--color-text-primary)}.upgrade-section{max-width:900px;margin:0 auto 4rem}.upgrade-title{display:flex;align-items:center;gap:.75rem;margin-bottom:.5rem;color:var(--color-text-primary)}.upgrade-title h2{margin:0;font-size:1.5rem}.upgrade-subtitle{color:var(--color-text-secondary);margin-bottom:2rem}.upgrade-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(350px,1fr));gap:2rem}.upgrade-card{background-color:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:16px;padding:2rem;display:flex;flex-direction:column}[data-theme=light] .upgrade-card{background-color:#fff;box-shadow:0 10px 25px #0000000d}.upgrade-card-header{margin-bottom:1.5rem}.upgrade-card-header h3{font-size:1.25rem;margin:0 0 .25rem;color:var(--color-text-primary)}.upgrade-duration{font-size:.9rem;color:var(--color-text-secondary)}.upgrade-calc{background-color:#0000001a;border-radius:12px;padding:1.5rem;margin-bottom:2rem}[data-theme=light] .upgrade-calc{background-color:#f8fafc}.calc-row{display:flex;justify-content:space-between;margin-bottom:.75rem;font-size:.95rem;color:var(--color-text-secondary)}.calc-row.credit{color:#22c55e;font-weight:500}.calc-divider{height:1px;background-color:var(--color-border);margin:1rem 0}.calc-row.total{margin-bottom:0;color:var(--color-text-primary);font-weight:600}.final-price{font-size:1.5rem;color:var(--color-text-primary)}.premium-footer-actions{text-align:center;color:var(--color-text-secondary);margin-top:4rem}.cancel-temp-btn{margin-top:2rem;background:transparent;border:none;color:var(--color-text-secondary);font-size:.8rem;cursor:pointer;text-decoration:underline;display:flex;align-items:center;gap:.5rem;margin-left:auto;margin-right:auto;opacity:.5}.cancel-temp-btn:hover{opacity:1}@keyframes shimmer{0%,to{transform:scale(1);opacity:.5}50%{transform:scale(1.1);opacity:.8}}@media(max-width:768px){.pricing-cards,.upgrade-cards{flex-direction:column;align-items:center}.pricing-card,.upgrade-card{width:100%;max-width:100%}.upgrade-cards{grid-template-columns:1fr}}.spin{animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.pricing-btn.loading{opacity:.7;cursor:not-allowed}.pricing-btn:disabled{opacity:.5;cursor:not-allowed}.payment-error{background:#ef44441a;border:1px solid rgba(239,68,68,.3);color:#ef4444;padding:16px 24px;border-radius:12px;text-align:center;max-width:600px;margin:0 auto 2rem;font-size:.95rem}.secure-badge{display:flex;align-items:center;justify-content:center;gap:8px;margin-bottom:12px;color:#22c55e;font-weight:600;font-size:.9rem}.payment-info-badge{display:inline-flex;align-items:center;gap:6px;margin-top:12px;color:#22c55e;font-size:.85rem;font-weight:500}.dashboard-layout{min-height:100vh;background:var(--color-bg-primary);padding-top:calc(var(--nav-height) + 40px);padding-bottom:80px}[data-theme=light] .dashboard-layout{background:#f1f5f9}.dashboard-container{max-width:1000px;margin:0 auto;padding:0 24px}.dashboard-header{text-align:center;margin-bottom:40px}.dashboard-header h1{font-size:2rem;font-weight:700;color:var(--color-text-primary);margin-bottom:8px}.dashboard-header p{color:var(--color-text-secondary);font-size:1rem}.dashboard-loading{display:flex;align-items:center;justify-content:center;height:100vh;color:var(--color-text-secondary);font-size:1.2rem}.dashboard-stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:40px}.stat-card{background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:12px;padding:24px;display:flex;align-items:center;gap:16px;transition:transform .2s}[data-theme=light] .stat-card{background:#fff;box-shadow:0 1px 3px #0000000d}.stat-card:hover{transform:translateY(-2px)}.stat-icon-wrapper{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center}.streak-bg{background:#f973161a}.streak-icon{color:#f97316}.best-streak-bg{background:#22c55e1a}.best-streak-icon{color:#22c55e}.active-days-bg{background:#3b82f61a}.active-days-icon{color:#3b82f6}.stat-info{display:flex;flex-direction:column}.stat-value{font-size:1.5rem;font-weight:700;color:var(--color-text-primary)}.stat-label{font-size:.85rem;color:var(--color-text-secondary);text-transform:lowercase}.dashboard-section{background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:12px;padding:24px;margin-bottom:40px}[data-theme=light] .dashboard-section{background:#fff;box-shadow:0 1px 3px #0000000d}.section-header-flex{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.section-header-flex h3{font-size:1rem;font-weight:600;color:var(--color-text-secondary)}.activity-legend{display:flex;align-items:center;gap:8px;font-size:.75rem;color:var(--color-text-secondary)}.intensity-level{width:12px;height:12px;border-radius:3px}.activity-level-0{background:#2d333b}.activity-level-1{background:#0e4429}.activity-level-2{background:#006d32}.activity-level-3{background:#26a641}.activity-level-4{background:#39d353}[data-theme=light] .activity-level-0{background:#ebedf0}[data-theme=light] .activity-level-1{background:#9be9a8}[data-theme=light] .activity-level-2{background:#40c463}[data-theme=light] .activity-level-3{background:#30a14e}[data-theme=light] .activity-level-4{background:#216e39}.activity-graph-container{display:flex;flex-direction:column;gap:8px;overflow-x:auto;padding-bottom:8px}.months-row{display:flex;justify-content:space-between;font-size:.75rem;color:var(--color-text-secondary);padding-left:20px}.grid-body{display:flex;flex-direction:column;gap:4px}.grid-row{display:flex;gap:4px}.grid-cell{width:12px;height:12px;border-radius:3px;min-width:12px}.dashboard-tabs{display:flex;justify-content:center;gap:16px;margin-bottom:24px}.tab-btn{display:flex;align-items:center;gap:8px;padding:8px 16px;background:transparent;border:none;color:var(--color-text-secondary);font-size:.9rem;font-weight:500;cursor:pointer;border-radius:8px;transition:all .2s}.tab-btn.active{background:var(--color-bg-secondary);color:var(--color-text-primary);border:1px solid var(--color-border)}[data-theme=light] .tab-btn.active{background:#fff}.progress-cards-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}.progress-card{background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:12px;padding:24px;cursor:pointer;transition:all .2s}[data-theme=light] .progress-card{background:#fff;box-shadow:0 1px 3px #0000000d}.progress-card:hover{border-color:var(--color-accent)}.progress-card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.progress-card-header h4{display:flex;align-items:center;gap:8px;font-size:1.1rem;color:var(--color-text-primary);margin:0}.fraction{font-size:.85rem;font-weight:600;color:var(--color-text-secondary)}.progress-bar-container{height:6px;background:var(--color-border);border-radius:4px;overflow:hidden;margin-bottom:16px}.progress-bar-fill{height:100%;background:#22c55e;border-radius:4px;transition:width .5s ease}.progress-card-footer{display:flex;justify-content:space-between;align-items:center;font-size:.8rem;color:var(--color-text-secondary)}.percentage{color:var(--color-text-primary);font-weight:600}@media(max-width:768px){.dashboard-stats-grid,.progress-cards-grid{grid-template-columns:1fr}}.support-layout{min-height:100vh;background:var(--color-bg-primary);padding-top:calc(var(--nav-height) + 60px);padding-bottom:80px;display:flex;justify-content:center}.support-container{max-width:600px;width:100%;padding:0 24px}.support-header{text-align:center;margin-bottom:40px}.support-header h1{font-size:2.2rem;font-weight:700;color:var(--color-text-primary);margin-bottom:12px}.support-header p{color:var(--color-text-secondary);font-size:1rem;line-height:1.5}.support-form{background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:12px;padding:32px}[data-theme=light] .support-form{background:#fff;box-shadow:0 4px 6px -1px #0000000d}.form-group{margin-bottom:24px}.form-group label{display:block;margin-bottom:8px;font-size:.95rem;font-weight:500;color:var(--color-text-primary)}.form-control{width:100%;background:var(--color-bg-primary);border:1px solid var(--color-border);border-radius:8px;padding:12px 16px;font-size:1rem;color:var(--color-text-primary);transition:all .2s;font-family:var(--font-family-body)}.form-control:focus{outline:none;border-color:var(--color-accent);box-shadow:0 0 0 2px #38bdf833}[data-theme=light] .form-control{background:#f8fafc}select.form-control{appearance:none;background-image:url(data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%2394a3b8%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E);background-repeat:no-repeat;background-position:right 16px top 50%;background-size:12px auto}textarea.form-control{resize:vertical;min-height:120px}.support-btn{width:100%;padding:14px;background:var(--color-accent);color:#fff;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:12px;transition:all .2s}.support-btn:hover:not(:disabled){filter:brightness(.9)}.support-btn.loading{opacity:.7;cursor:not-allowed}.success-state{text-align:center;display:flex;flex-direction:column;align-items:center;justify-content:center;padding-top:40px}.success-icon{margin-bottom:24px}.success-state h2{font-size:2rem;color:var(--color-text-primary);margin-bottom:16px}.success-state p{color:var(--color-text-secondary);margin-bottom:32px;font-size:1.1rem}.success-state .support-btn{width:auto;padding:12px 32px}.ticket-info{background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:12px;padding:24px;margin-bottom:32px;width:100%}[data-theme=light] .ticket-info{background:#f8fafc}.ticket-label{display:block;font-size:.9rem;color:var(--color-text-secondary);margin-bottom:8px;text-transform:uppercase;letter-spacing:.05em}.ticket-number{display:block;font-size:1.8rem;font-weight:800;color:var(--color-accent);font-family:monospace;margin-bottom:12px}.ticket-tip{font-size:.85rem!important;color:var(--color-text-secondary)!important;margin-bottom:0!important}.markdown-body img,.mermaid-container svg{cursor:zoom-in;transition:transform .3s cubic-bezier(.4,0,.2,1),box-shadow .3s ease}.markdown-body img:hover,.mermaid-container:hover svg{transform:translateY(-2px);box-shadow:0 10px 20px #0000001a}.universal-zoom-hint{position:absolute;pointer-events:none;background:#0f172ad9;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);color:#fff;padding:8px 16px;border-radius:100px;display:flex;align-items:center;gap:8px;font-size:.85rem;font-weight:500;z-index:1000;box-shadow:0 4px 12px #0003;opacity:0;transition:opacity .2s ease,transform .2s ease;border:1px solid rgba(255,255,255,.1)}.universal-zoom-hint.visible{opacity:1;transform:scale(1)}.zoom-modal-overlay{position:fixed;inset:0;z-index:9999;background:#000000eb;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);display:flex;align-items:center;justify-content:center;padding:2rem;cursor:zoom-out;animation:modalFadeIn .3s cubic-bezier(.16,1,.3,1)}@keyframes modalFadeIn{0%{opacity:0}to{opacity:1}}.zoom-modal-content{position:relative;max-width:95vw;max-height:90vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1.5rem;transition:transform .3s cubic-bezier(.16,1,.3,1);transform-origin:center center}.zoom-modal-content.dragging{transition:none!important}.zoom-controls-bar{position:fixed;bottom:40px;left:50%;transform:translate(-50%);background:#0f172ab3;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);padding:6px;border-radius:100px;display:flex;gap:4px;border:1px solid rgba(255,255,255,.15);box-shadow:0 10px 25px #0006;z-index:10001}.zoom-level-btn{background:transparent;border:none;color:#ffffffb3;padding:8px 16px;border-radius:100px;font-size:.85rem;font-weight:600;cursor:pointer;transition:all .2s ease}.zoom-level-btn:hover{color:#fff;background:#ffffff1a}.zoom-level-btn.active{background:#fff;color:#0f172a;box-shadow:0 4px 12px #fff3}.zoom-modal-image{max-width:100%;max-height:85vh;border-radius:8px;box-shadow:0 25px 50px -12px #00000080;-webkit-user-select:none;user-select:none;pointer-events:none}.zoom-modal-svg-container{background:#fff;padding:2.5rem;border-radius:12px;width:90vw;max-height:85vh;overflow:auto;box-shadow:0 25px 50px -12px #00000080;display:flex;align-items:center;justify-content:center}.zoom-modal-svg-container svg{width:100%!important;height:auto!important;display:block}.zoom-close-btn{position:absolute;top:-40px;right:-40px;background:#ffffff1a;border:none;color:#fff;width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s ease;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.zoom-close-btn:hover{background:#fff3;transform:rotate(90deg)}.zoom-modal-caption{color:#fffc;font-size:.95rem;font-weight:500;text-align:center;max-width:80%;line-height:1.4}@media(max-width:768px){.zoom-modal-overlay{padding:1rem}.zoom-close-btn{top:10px;right:10px}.zoom-modal-caption{font-size:.85rem}}:root{--color-bg-primary: #0f172a;--color-bg-secondary: #1e293b;--color-text-primary: #f8fafc;--color-text-secondary: #94a3b8;--color-accent: #38bdf8;--color-border: #334155;--font-family-body: "Inter", system-ui, -apple-system, sans-serif;--font-family-mono: "Fira Code", monospace;--nav-height: 64px;--sidebar-width: 280px;--toc-width: 240px;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e293b 100%)}[data-theme=light]{--color-bg-primary: #ffffff;--color-bg-secondary: #f1f5f9;--color-text-primary: #0f172a;--color-text-secondary: #64748b;--color-accent: #0284c7;--color-border: #e2e8f0;--bg-gradient: linear-gradient(135deg, #ffffff 0%, #f1f5f9 100%)}*{box-sizing:border-box}body{background-color:var(--color-bg-primary);color:var(--color-text-primary);font-family:var(--font-family-body);margin:0;-webkit-text-size-adjust:100%;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none;transition:color .2s ease}ul{list-style:none;padding:0;margin:0}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--color-bg-secondary);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--color-border)}@media(max-width:768px){:root{--nav-height: 56px}body{overflow:auto;overflow-x:hidden}}.admin-layout{display:flex;min-height:100vh;background:var(--color-bg-primary);color:var(--color-text-primary)}.admin-loading,.admin-denied{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;background:var(--color-bg-primary);color:var(--color-text-primary);gap:16px}.admin-loading-spinner{width:40px;height:40px;border:3px solid var(--color-border);border-top-color:#818cf8;border-radius:50%;animation:admin-spin .8s linear infinite}@keyframes admin-spin{to{transform:rotate(360deg)}}.admin-denied .denied-icon{color:#ef4444;opacity:.6}.admin-denied h1{font-size:1.8rem;margin:0}.admin-denied p{color:var(--color-text-secondary);margin:0 0 24px}.admin-btn-primary{display:inline-flex;align-items:center;gap:8px;padding:10px 24px;background:linear-gradient(135deg,#6366f1,#818cf8);color:#fff;border:none;border-radius:10px;font-size:.95rem;font-weight:600;cursor:pointer;transition:all .2s ease}.admin-btn-primary:hover{transform:translateY(-1px);box-shadow:0 4px 20px #6366f166}.admin-sidebar{width:260px;background:#0f172af2;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-right:1px solid rgba(51,65,85,.5);display:flex;flex-direction:column;transition:width .3s cubic-bezier(.4,0,.2,1);position:fixed;top:0;left:0;bottom:0;z-index:100;overflow:hidden}.sidebar-collapsed .admin-sidebar{width:72px}.admin-sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:20px 16px;border-bottom:1px solid rgba(51,65,85,.4)}.admin-brand{display:flex;align-items:center;gap:10px;overflow:hidden;white-space:nowrap}.admin-brand-icon{color:#818cf8;flex-shrink:0}.admin-brand-text{font-size:1.1rem;font-weight:700;background:linear-gradient(135deg,#818cf8,#c084fc);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.admin-collapse-btn{background:#33415566;border:1px solid rgba(51,65,85,.6);border-radius:8px;color:var(--color-text-secondary);cursor:pointer;padding:6px;display:flex;align-items:center;justify-content:center;transition:all .2s ease;flex-shrink:0}.admin-collapse-btn:hover{background:#6366f133;color:#818cf8}.admin-sidebar-nav{flex:1;padding:12px 10px;display:flex;flex-direction:column;gap:4px;overflow-y:auto}.admin-nav-item{display:flex;align-items:center;gap:12px;padding:10px 14px;border-radius:10px;color:var(--color-text-secondary);font-size:.9rem;font-weight:500;text-decoration:none;transition:all .2s ease;white-space:nowrap;overflow:hidden;cursor:pointer;border:none;background:none;width:100%;text-align:left;font-family:inherit}.admin-nav-item:hover{background:#6366f11a;color:var(--color-text-primary)}.admin-nav-item.active{background:linear-gradient(135deg,#6366f133,#8b5cf626);color:#a5b4fc;border:1px solid rgba(99,102,241,.3);font-weight:600}.admin-nav-item.active svg{color:#818cf8}.admin-sidebar-footer{padding:12px 10px;border-top:1px solid rgba(51,65,85,.4);display:flex;flex-direction:column;gap:4px}.admin-user-info{display:flex;align-items:center;gap:10px;padding:10px 14px;overflow:hidden}.admin-user-avatar,.admin-user-avatar-fallback{width:32px;height:32px;border-radius:8px;flex-shrink:0}.admin-user-avatar{object-fit:cover}.admin-user-avatar-fallback{background:linear-gradient(135deg,#6366f1,#818cf8);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.85rem;color:#fff}.admin-user-details{display:flex;flex-direction:column;overflow:hidden}.admin-user-name{font-size:.85rem;font-weight:600;color:var(--color-text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.admin-user-role{font-size:.75rem;color:#818cf8}.signout-item:hover{color:#ef4444!important;background:#ef44441a!important}.back-to-site:hover{color:#22c55e!important;background:#22c55e1a!important}.admin-main{flex:1;margin-left:260px;padding:32px;min-height:100vh;transition:margin-left .3s cubic-bezier(.4,0,.2,1);overflow-x:hidden}.sidebar-collapsed .admin-main{margin-left:72px}@media(max-width:768px){.admin-sidebar{width:72px}.admin-brand-text,.admin-nav-item span,.admin-user-details{display:none}.admin-main{margin-left:72px;padding:20px 16px}}.admin-dashboard{max-width:1400px;margin:0 auto}.admin-page-header{margin-bottom:32px}.admin-page-header h1{font-size:1.8rem;font-weight:700;margin:0 0 6px;background:linear-gradient(135deg,#e2e8f0,#f8fafc);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.admin-page-header p{color:var(--color-text-secondary);margin:0;font-size:.95rem}.admin-page-loading,.admin-page-error{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:80px 20px;color:var(--color-text-secondary);gap:16px}.admin-page-error p{background:#ef44441a;border:1px solid rgba(239,68,68,.3);padding:16px 24px;border-radius:12px;color:#fca5a5}.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:24px}.kpi-card{background:#1e293b99;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid rgba(51,65,85,.5);border-radius:16px;padding:20px;display:flex;flex-direction:column;gap:12px;transition:all .25s ease;position:relative;overflow:hidden}.kpi-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,#6366f1,#8b5cf6,#a855f7);opacity:0;transition:opacity .3s ease}.kpi-card:hover{border-color:#6366f166;transform:translateY(-2px);box-shadow:0 8px 32px #0003}.kpi-card:hover:before{opacity:1}.kpi-icon-wrap{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center}.kpi-content{display:flex;flex-direction:column}.kpi-value{font-size:1.8rem;font-weight:800;line-height:1.1;color:var(--color-text-primary)}.kpi-label{font-size:.85rem;color:var(--color-text-secondary);margin-top:2px}.kpi-badge{display:inline-flex;align-items:center;gap:4px;font-size:.78rem;font-weight:600;padding:4px 10px;border-radius:20px;width:fit-content}.kpi-badge.positive{background:#22c55e26;color:#4ade80}.kpi-badge.neutral{background:#94a3b826;color:#94a3b8}.admin-card{background:#1e293b99;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid rgba(51,65,85,.5);border-radius:16px;padding:24px;transition:all .25s ease}.admin-card:hover{border-color:#6366f14d}.admin-card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.admin-card-header h3{font-size:1rem;font-weight:600;margin:0;display:flex;align-items:center;gap:8px;color:var(--color-text-primary)}.admin-card-subtitle{font-size:.8rem;color:var(--color-text-secondary)}.admin-grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:24px}.signup-chart{padding:8px 0}.chart-bars{display:flex;align-items:flex-end;gap:3px;height:140px}.chart-bar-col{flex:1;height:100%;display:flex;align-items:flex-end;cursor:pointer}.chart-bar{width:100%;background:linear-gradient(180deg,#818cf8,#6366f1);border-radius:3px 3px 0 0;min-height:4px;transition:all .2s ease}.chart-bar-col:hover .chart-bar{background:linear-gradient(180deg,#a5b4fc,#818cf8);transform:scaleY(1.05)}.chart-x-labels{display:flex;justify-content:space-between;margin-top:8px;font-size:.72rem;color:var(--color-text-secondary)}.plan-distribution{display:flex;flex-direction:column;gap:16px}.plan-row{display:flex;align-items:center;gap:12px}.plan-row-label{display:flex;align-items:center;gap:8px;width:100px;font-size:.85rem;flex-shrink:0}.plan-dot{width:10px;height:10px;border-radius:50%;flex-shrink:0}.plan-row-bar{flex:1;height:8px;background:#33415566;border-radius:4px;overflow:hidden}.plan-bar-fill{height:100%;border-radius:4px;transition:width .6s ease;min-width:4px}.plan-row-count{font-size:.8rem;color:var(--color-text-secondary);width:80px;text-align:right;flex-shrink:0}.country-list,.topic-list{display:flex;flex-direction:column;gap:10px}.country-row,.topic-row{display:flex;align-items:center;gap:12px;padding:8px 12px;border-radius:10px;transition:background .2s ease}.country-row:hover,.topic-row:hover{background:#3341554d}.country-rank,.topic-rank{font-size:.78rem;color:var(--color-text-secondary);width:28px;flex-shrink:0}.country-name,.topic-name{flex:1;font-size:.9rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.country-count,.topic-count{font-size:.82rem;color:var(--color-text-secondary);font-weight:600}.empty-state{color:var(--color-text-secondary);font-size:.9rem;text-align:center;padding:24px;opacity:.7}.activity-feed{display:flex;flex-direction:column;gap:6px;max-height:340px;overflow-y:auto}.feed-item{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:10px;transition:background .2s ease}.feed-item:hover{background:#3341554d}.feed-icon{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.feed-content{flex:1;display:flex;flex-direction:column;overflow:hidden}.feed-user{font-size:.85rem;font-weight:600;color:var(--color-text-primary)}.feed-desc{font-size:.78rem;color:var(--color-text-secondary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.feed-time{font-size:.72rem;color:var(--color-text-secondary);flex-shrink:0;white-space:nowrap}.provider-list{display:flex;flex-direction:column;gap:16px}.provider-row{display:flex;align-items:center;gap:12px}.provider-name{width:90px;font-size:.85rem;flex-shrink:0}.provider-bar{flex:1;height:8px;background:#33415566;border-radius:4px;overflow:hidden}.provider-bar-fill{height:100%;background:linear-gradient(90deg,#818cf8,#a855f7);border-radius:4px;transition:width .6s ease;min-width:4px}.provider-count{font-size:.82rem;color:var(--color-text-secondary);font-weight:600;width:30px;text-align:right}.section-divider{display:flex;align-items:center;gap:10px;padding:8px 0 16px;margin:8px 0 4px;color:var(--color-text-secondary);font-size:.85rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;border-bottom:1px solid rgba(51,65,85,.3)}.chart-bar.analytics-bar{background:linear-gradient(180deg,#0ea5e9,#0284c7)}.chart-bar-col:hover .chart-bar.analytics-bar{background:linear-gradient(180deg,#38bdf8,#0ea5e9)}@media(max-width:1024px){.kpi-grid{grid-template-columns:repeat(2,1fr)}.admin-grid-2{grid-template-columns:1fr}}@media(max-width:640px){.kpi-grid{grid-template-columns:1fr}}.admin-users{max-width:1400px;margin:0 auto}.users-toolbar{display:flex;align-items:center;gap:16px;margin-bottom:20px;flex-wrap:wrap}.search-box{display:flex;align-items:center;gap:10px;flex:1;min-width:260px;background:#1e293b99;border:1px solid rgba(51,65,85,.5);border-radius:12px;padding:10px 16px;transition:border-color .2s}.search-box:focus-within{border-color:#818cf8}.search-box svg{color:var(--color-text-secondary);flex-shrink:0}.search-box input{flex:1;background:none;border:none;outline:none;color:var(--color-text-primary);font-size:.9rem;font-family:inherit}.search-box input::placeholder{color:var(--color-text-secondary)}.filter-group{display:flex;align-items:center;gap:10px}.filter-group svg{color:var(--color-text-secondary)}.filter-group select{background:#1e293b99;border:1px solid rgba(51,65,85,.5);border-radius:10px;color:var(--color-text-primary);padding:8px 14px;font-size:.85rem;font-family:inherit;cursor:pointer;transition:border-color .2s}.filter-group select:focus{border-color:#818cf8;outline:none}.users-table-wrap{background:#1e293b99;border:1px solid rgba(51,65,85,.5);border-radius:16px;overflow:hidden;overflow-x:auto}.users-table{width:100%;border-collapse:collapse;font-size:.88rem}.users-table th{text-align:left;padding:14px 16px;font-weight:600;color:var(--color-text-secondary);font-size:.78rem;text-transform:uppercase;letter-spacing:.5px;border-bottom:1px solid rgba(51,65,85,.5);white-space:nowrap;-webkit-user-select:none;user-select:none}.users-table th.sortable{cursor:pointer;transition:color .2s}.users-table th.sortable:hover{color:#a5b4fc}.sort-icon{vertical-align:middle;margin-left:4px;opacity:.8}.sort-icon.inactive{opacity:.3}.users-table td{padding:12px 16px;border-bottom:1px solid rgba(51,65,85,.2);vertical-align:middle}.users-table tr{transition:background .2s}.users-table tbody tr:hover{background:#6366f10d}.users-table tbody tr.row-active{background:#6366f11a}.user-cell{display:flex;align-items:center;gap:10px}.user-cell-avatar,.user-cell-avatar-none{width:32px;height:32px;border-radius:8px;flex-shrink:0}.user-cell-avatar{object-fit:cover}.user-cell-avatar-none{background:linear-gradient(135deg,#475569,#64748b);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.82rem}.user-cell-name{display:flex;align-items:center;gap:6px;font-weight:600}.admin-badge-icon{color:#818cf8}.email-cell{color:var(--color-text-secondary);max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.location-cell{display:flex;align-items:center;gap:6px;color:var(--color-text-secondary);font-size:.84rem}.date-cell{color:var(--color-text-secondary);font-size:.82rem;white-space:nowrap}.provider-chip{font-size:.78rem;padding:3px 10px;border-radius:20px;font-weight:600;white-space:nowrap}.provider-chip.github{background:#ffffff1a;color:#e2e8f0}.provider-chip.linkedin_oidc{background:#0a66c226;color:#60a5fa}.provider-chip.email{background:#22c55e26;color:#4ade80}.plan-chip{display:inline-flex;align-items:center;gap:4px;font-size:.78rem;padding:3px 10px;border-radius:20px;font-weight:600;white-space:nowrap}.plan-chip.premium{background:#eab30826;color:#fbbf24}.plan-chip.free{background:#94a3b81a;color:#94a3b8}.action-btns{display:flex;gap:6px}.action-btn{width:30px;height:30px;border-radius:8px;border:1px solid rgba(51,65,85,.5);background:#1e293b80;color:var(--color-text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease}.action-btn:hover{border-color:#6366f180;background:#6366f11a;color:#a5b4fc}.action-btn.grant:hover{border-color:#22c55e80;background:#22c55e1a;color:#4ade80}.action-btn.revoke:hover{border-color:#ef444480;background:#ef44441a;color:#f87171}.action-btn.view:hover{border-color:#3b82f680;background:#3b82f61a;color:#60a5fa}.pagination{display:flex;align-items:center;justify-content:space-between;margin-top:16px;padding:0 4px}.pagination-info{font-size:.82rem;color:var(--color-text-secondary)}.pagination-btns{display:flex;align-items:center;gap:6px}.pagination-btns button{width:32px;height:32px;border-radius:8px;border:1px solid rgba(51,65,85,.5);background:#1e293b99;color:var(--color-text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s}.pagination-btns button:hover:not(:disabled){border-color:#818cf8;color:#a5b4fc}.pagination-btns button:disabled{opacity:.3;cursor:default}.page-number{font-size:.82rem;color:var(--color-text-secondary);padding:0 8px}.user-drawer-overlay{position:fixed;inset:0;background:#00000080;z-index:200;display:flex;justify-content:flex-end;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.user-drawer{width:440px;max-width:90vw;background:var(--color-bg-primary);border-left:1px solid rgba(51,65,85,.5);height:100vh;overflow-y:auto;animation:slideIn .3s ease}@keyframes slideIn{0%{transform:translate(100%)}to{transform:translate(0)}}.drawer-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid rgba(51,65,85,.4)}.drawer-header h3{margin:0;font-size:1.1rem}.drawer-close{background:none;border:none;color:var(--color-text-secondary);cursor:pointer;padding:4px;border-radius:6px;transition:all .2s}.drawer-close:hover{background:#ef44441a;color:#f87171}.drawer-body{padding:24px}.drawer-section{margin-bottom:28px}.drawer-section h4{font-size:.78rem;text-transform:uppercase;letter-spacing:.5px;color:var(--color-text-secondary);margin:0 0 14px;padding-bottom:8px;border-bottom:1px solid rgba(51,65,85,.3)}.drawer-field{display:flex;align-items:center;justify-content:space-between;padding:8px 0}.field-label{font-size:.85rem;color:var(--color-text-secondary)}.field-value{font-size:.85rem;font-weight:600;display:flex;align-items:center;gap:6px}.field-value.mono{font-family:var(--font-family-mono);font-size:.78rem}.drawer-topics{display:flex;flex-wrap:wrap;gap:6px}.topic-chip{font-size:.75rem;padding:4px 10px;border-radius:20px;background:#6366f11a;color:#a5b4fc;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:180px}@media(max-width:1024px){.users-toolbar{flex-direction:column;align-items:stretch}.filter-group{flex-wrap:wrap}}.admin-content{max-width:1400px;margin:0 auto}.content-kpi-row{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:24px}.content-kpi{display:flex;align-items:center;gap:14px;background:#1e293b99;border:1px solid rgba(51,65,85,.5);border-radius:14px;padding:18px 20px;transition:all .25s ease}.content-kpi:hover{border-color:#6366f166;transform:translateY(-1px)}.content-kpi-value{font-size:1.4rem;font-weight:800;display:block}.content-kpi-label{font-size:.78rem;color:var(--color-text-secondary);display:block}.popular-list{display:flex;flex-direction:column;gap:8px}.popular-row{display:flex;align-items:center;gap:12px;padding:10px 14px;border-radius:10px;transition:background .2s}.popular-row:hover{background:#3341554d}.popular-row.needs-attention{opacity:.7}.popular-rank{font-size:.78rem;color:var(--color-text-secondary);width:28px;flex-shrink:0}.popular-name{flex:1;font-size:.88rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.popular-count{font-size:.82rem;color:var(--color-text-secondary);font-weight:600}.section-hint{font-size:.72rem;color:var(--color-text-secondary);background:#3341554d;padding:2px 8px;border-radius:10px;white-space:nowrap}.content-tree-card{margin-top:24px}.content-tree{display:flex;flex-direction:column}.content-section-row{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;cursor:pointer;border-radius:10px;transition:background .2s}.content-section-row:hover{background:#33415533}.content-section-row.expanded{background:#6366f10d}.content-section-info{display:flex;align-items:center;gap:8px}.section-icon{color:#818cf8}.content-section-name{font-weight:600;font-size:.92rem}.content-section-badges{display:flex;gap:8px}.badge{font-size:.72rem;padding:3px 10px;border-radius:20px;font-weight:600;white-space:nowrap;display:flex;align-items:center;gap:4px}.badge.file-count{background:#6366f11a;color:#a5b4fc}.badge.completions{background:#22c55e1a;color:#4ade80}.content-children{border-left:2px solid rgba(99,102,241,.15);margin-left:24px}.content-file-row{display:flex;align-items:center;justify-content:space-between;padding:8px 16px;transition:background .2s;border-radius:8px}.content-file-row:hover{background:#33415526}.content-file-info{display:flex;align-items:center;gap:8px;overflow:hidden}.file-icon{color:var(--color-text-secondary);flex-shrink:0}.content-file-name{font-size:.86rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.premium-tag{display:inline-flex;align-items:center;gap:3px;font-size:.7rem;padding:2px 8px;border-radius:12px;background:#eab30826;color:#fbbf24;white-space:nowrap;flex-shrink:0}.content-file-stats{display:flex;gap:12px;flex-shrink:0}.completion-count{display:flex;align-items:center;gap:4px;font-size:.78rem;color:var(--color-text-secondary)}@media(max-width:1024px){.content-kpi-row{grid-template-columns:repeat(2,1fr)}}@media(max-width:640px){.content-kpi-row{grid-template-columns:1fr}}.admin-subscriptions{max-width:1400px;margin:0 auto}.plan-breakdown{display:flex;flex-direction:column;gap:18px}.plan-breakdown-row{display:flex;align-items:center;gap:12px}.plan-breakdown-label{display:flex;align-items:center;gap:8px;width:100px;flex-shrink:0}.plan-color-dot{width:10px;height:10px;border-radius:50%;flex-shrink:0}.plan-name{font-size:.85rem;font-weight:500}.plan-breakdown-bar-wrap{flex:1;height:10px;background:#33415566;border-radius:5px;overflow:hidden}.plan-breakdown-bar{height:100%;border-radius:5px;transition:width .8s ease;min-width:6px}.plan-breakdown-stats{display:flex;gap:8px;width:80px;flex-shrink:0;justify-content:flex-end}.plan-count{font-size:.85rem;font-weight:700}.plan-percent{font-size:.78rem;color:var(--color-text-secondary)}.plan-revenue-summary{margin-top:16px;padding-top:16px;border-top:1px solid rgba(51,65,85,.3);display:flex;flex-direction:column;gap:8px}.revenue-item{display:flex;justify-content:space-between;font-size:.85rem}.revenue-plan{color:var(--color-text-secondary)}.revenue-amount{font-weight:700;color:#4ade80}.expiring-list{display:flex;flex-direction:column;gap:8px}.empty-state-box{display:flex;flex-direction:column;align-items:center;gap:10px;padding:32px;color:var(--color-text-secondary);font-size:.9rem}.empty-state-box p{margin:0}.expiring-row{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-radius:10px;transition:background .2s}.expiring-row:hover{background:#33415533}.expiring-info{display:flex;flex-direction:column}.expiring-name{font-size:.88rem;font-weight:600}.expiring-email{font-size:.78rem;color:var(--color-text-secondary)}.expiring-meta{display:flex;align-items:center;gap:10px}.expiring-days{font-size:.78rem;font-weight:700;padding:3px 10px;border-radius:20px}.expiring-days.warning{background:#eab30826;color:#fbbf24}.expiring-days.critical{background:#ef444426;color:#f87171}.expiring-plan{font-size:.78rem;color:var(--color-text-secondary)}.sub-timeline{display:flex;flex-direction:column;gap:4px;max-height:500px;overflow-y:auto}.timeline-row{display:flex;align-items:flex-start;gap:16px;padding:14px 12px;border-radius:10px;transition:background .2s;position:relative}.timeline-row:hover{background:#33415526}.timeline-dot{width:12px;height:12px;border-radius:50%;flex-shrink:0;margin-top:6px;position:relative}.timeline-row:not(:last-child) .timeline-dot:after{content:"";position:absolute;top:14px;left:50%;transform:translate(-50%);width:2px;height:32px;background:#3341554d}.timeline-content{flex:1;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.timeline-main{display:flex;align-items:center;gap:10px}.timeline-avatar,.timeline-avatar-fallback{width:32px;height:32px;border-radius:8px;flex-shrink:0}.timeline-avatar{object-fit:cover}.timeline-avatar-fallback{background:linear-gradient(135deg,#475569,#64748b);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.82rem}.timeline-info{display:flex;flex-direction:column}.timeline-name{font-size:.88rem;font-weight:600}.timeline-email{font-size:.78rem;color:var(--color-text-secondary)}.timeline-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.timeline-plan{font-size:.8rem;font-weight:700}.timeline-date{display:flex;align-items:center;gap:4px;font-size:.78rem;color:var(--color-text-secondary)}.timeline-payment{font-size:.72rem;font-family:var(--font-family-mono);color:var(--color-text-secondary);background:#3341554d;padding:2px 8px;border-radius:6px}.refund-overlay{position:fixed;inset:0;background:#0009;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:300;display:flex;align-items:center;justify-content:center;animation:refundFadeIn .2s ease;padding:20px}@keyframes refundFadeIn{0%{opacity:0}to{opacity:1}}.refund-modal{width:560px;max-width:100%;max-height:90vh;overflow-y:auto;background:#1e293b;border:1px solid rgba(51,65,85,.6);border-radius:20px;box-shadow:0 24px 80px #00000080;animation:refundSlideUp .3s ease}@keyframes refundSlideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.refund-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid rgba(51,65,85,.5)}.refund-header-left{display:flex;align-items:center;gap:12px}.refund-header-icon{color:#f59e0b}.refund-header h3{margin:0;font-size:1.1rem;font-weight:700}.refund-header p{margin:0;font-size:.78rem;color:var(--color-text-secondary);font-family:var(--font-family-mono)}.refund-close{background:none;border:none;color:var(--color-text-secondary);cursor:pointer;padding:6px;border-radius:8px;transition:all .2s}.refund-close:hover{background:#ef44441a;color:#f87171}.refund-body{padding:20px 24px}.refund-section{margin-bottom:22px}.refund-section h4{font-size:.78rem;text-transform:uppercase;letter-spacing:.6px;color:var(--color-text-secondary);margin:0 0 10px}.refund-user-card{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:#0f172a80;border:1px solid rgba(51,65,85,.4);border-radius:12px}.refund-user-info{display:flex;flex-direction:column}.refund-user-name{font-weight:600;font-size:.92rem}.refund-user-email{font-size:.78rem;color:var(--color-text-secondary)}.badge-premium{display:inline-flex;align-items:center;gap:4px;font-size:.72rem;padding:4px 10px;border-radius:20px;background:#eab30826;color:#fbbf24;font-weight:700}.refund-ticket-card{padding:12px 16px;background:#0f172a80;border:1px solid rgba(51,65,85,.4);border-radius:12px}.refund-ticket-subject{font-weight:600;font-size:.9rem;display:block;margin-bottom:6px}.refund-ticket-meta{display:flex;gap:10px}.refund-ticket-category{font-size:.72rem;padding:2px 10px;border-radius:12px;background:#eab30826;color:#fbbf24;font-weight:600;text-transform:capitalize}.refund-ticket-id{font-size:.72rem;color:var(--color-text-secondary);font-family:var(--font-family-mono)}.payment-list{display:flex;flex-direction:column;gap:8px}.payment-option{display:flex;align-items:flex-start;gap:12px;padding:12px 16px;background:#0f172a80;border:1px solid rgba(51,65,85,.4);border-radius:12px;cursor:pointer;transition:all .2s ease}.payment-option:hover:not(.disabled){border-color:#6366f180}.payment-option.selected{border-color:#818cf8;background:#6366f114}.payment-option.disabled{opacity:.45;cursor:not-allowed}.payment-option input[type=radio]{margin-top:4px;accent-color:#818cf8}.payment-option-content{flex:1;min-width:0}.payment-option-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:4px}.payment-plan{font-weight:600;font-size:.88rem}.payment-amount{font-weight:700;color:#4ade80;font-size:.92rem}.payment-option-bottom{display:flex;gap:12px;align-items:center}.payment-date{display:flex;align-items:center;gap:4px;font-size:.75rem;color:var(--color-text-secondary)}.payment-id-text{font-size:.72rem;font-family:var(--font-family-mono);color:var(--color-text-secondary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.payment-ineligible-reason{font-size:.72rem;color:#f59e0b;margin-top:4px;font-weight:600}.refund-no-payments{display:flex;align-items:center;gap:12px;padding:16px;background:#ef444414;border:1px solid rgba(239,68,68,.2);border-radius:12px;color:#fca5a5}.refund-no-payments p{margin:0;font-size:.85rem}.refund-type-toggle{display:flex;gap:8px}.type-btn{flex:1;padding:10px;border-radius:10px;border:1px solid rgba(51,65,85,.5);background:#0f172a80;color:var(--color-text-secondary);font-size:.88rem;font-weight:600;cursor:pointer;transition:all .2s ease;font-family:inherit}.type-btn:hover{border-color:#6366f180;color:var(--color-text-primary)}.type-btn.active{border-color:#818cf8;background:#6366f126;color:#a5b4fc}.partial-amount-wrap{margin-top:12px}.partial-amount-wrap label{display:block;font-size:.82rem;color:var(--color-text-secondary);margin-bottom:6px}.partial-amount-input{width:100%;padding:10px 14px;background:#0f172a99;border:1px solid rgba(51,65,85,.5);border-radius:10px;color:var(--color-text-primary);font-size:.9rem;font-family:var(--font-family-mono);outline:none;transition:border-color .2s}.partial-amount-input:focus{border-color:#818cf8}.partial-amount-wrap small{display:block;margin-top:4px;font-size:.72rem;color:var(--color-text-secondary)}.refund-reason-input{width:100%;padding:10px 14px;background:#0f172a99;border:1px solid rgba(51,65,85,.5);border-radius:10px;color:var(--color-text-primary);font-size:.88rem;font-family:inherit;outline:none;resize:vertical;min-height:70px;transition:border-color .2s}.refund-reason-input:focus{border-color:#818cf8}.refund-checkbox{display:flex;align-items:center;gap:10px;font-size:.88rem;cursor:pointer}.refund-checkbox input[type=checkbox]{accent-color:#818cf8;width:16px;height:16px}.refund-warning{display:flex;align-items:center;gap:8px;margin-top:8px;padding:10px 14px;background:#f59e0b1a;border:1px solid rgba(245,158,11,.25);border-radius:10px;font-size:.78rem;color:#fbbf24}.refund-error{display:flex;align-items:center;gap:8px;padding:12px 16px;background:#ef444414;border:1px solid rgba(239,68,68,.25);border-radius:10px;font-size:.85rem;color:#fca5a5;margin-bottom:16px}.refund-confirm-banner{display:flex;gap:12px;align-items:flex-start;padding:14px 16px;background:#f59e0b1a;border:1px solid rgba(245,158,11,.3);border-radius:12px;margin-bottom:16px;color:#fbbf24}.refund-confirm-banner strong{display:block;margin-bottom:2px;font-size:.88rem}.refund-confirm-banner p{margin:0;font-size:.82rem;color:var(--color-text-secondary)}.refund-actions{display:flex;gap:10px;justify-content:flex-end;padding-top:8px}.refund-btn-cancel,.refund-btn-submit,.refund-btn-done{padding:10px 20px;border-radius:10px;font-size:.88rem;font-weight:600;cursor:pointer;border:none;font-family:inherit;display:flex;align-items:center;gap:8px;transition:all .2s ease}.refund-btn-cancel{background:#33415566;color:var(--color-text-secondary);border:1px solid rgba(51,65,85,.5)}.refund-btn-cancel:hover{background:#33415599;color:var(--color-text-primary)}.refund-btn-submit{background:linear-gradient(135deg,#6366f1,#818cf8);color:#fff}.refund-btn-submit:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 20px #6366f166}.refund-btn-submit.confirm{background:linear-gradient(135deg,#dc2626,#ef4444)}.refund-btn-submit.confirm:hover:not(:disabled){box-shadow:0 4px 20px #ef444466}.refund-btn-submit:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}.spin{animation:refundSpin .8s linear infinite}@keyframes refundSpin{to{transform:rotate(360deg)}}.refund-success{padding:48px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:12px}.refund-success svg{color:#22c55e}.refund-success h4{font-size:1.2rem;margin:0}.refund-success p{font-size:.88rem;color:var(--color-text-secondary);margin:0}.refund-success-details{background:#0f172a80;border:1px solid rgba(51,65,85,.4);border-radius:12px;padding:16px 20px;width:100%;max-width:340px;margin-top:8px}.detail-row{display:flex;justify-content:space-between;padding:6px 0;font-size:.85rem}.detail-row span:first-child{color:var(--color-text-secondary)}.mono{font-family:var(--font-family-mono);font-size:.78rem}.refund-btn-done{margin-top:16px;background:linear-gradient(135deg,#6366f1,#818cf8);color:#fff;padding:10px 32px}.refund-btn-done:hover{transform:translateY(-1px);box-shadow:0 4px 20px #6366f166}.admin-support{max-width:1400px;margin:0 auto}.support-stats-row{display:flex;gap:12px;margin-bottom:20px;flex-wrap:wrap}.support-stat-card{display:flex;align-items:center;gap:12px;background:#1e293b99;border:1px solid rgba(51,65,85,.5);border-radius:14px;padding:14px 20px;cursor:pointer;transition:all .25s ease;flex:1;min-width:130px}.support-stat-card:hover{border-color:#6366f166;transform:translateY(-1px)}.support-stat-card.active{border-color:#818cf8;background:#6366f114}.support-stat-value{font-size:1.3rem;font-weight:800;display:block;line-height:1.1}.support-stat-label{font-size:.75rem;color:var(--color-text-secondary);display:block}.support-toolbar{margin-bottom:20px}.tickets-list{display:flex;flex-direction:column;gap:8px}.ticket-card{display:flex;gap:16px;padding:18px 20px;background:#1e293b99;border:1px solid rgba(51,65,85,.5);border-radius:14px;transition:all .25s ease}.ticket-card:hover{border-color:#6366f14d;transform:translateY(-1px);box-shadow:0 4px 20px #00000026}.ticket-left{flex-shrink:0}.ticket-category-icon{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center}.ticket-body{flex:1;min-width:0}.ticket-top{display:flex;align-items:center;gap:10px;margin-bottom:10px}.ticket-subject{font-size:.95rem;font-weight:600;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.ticket-id-badge{font-size:.7rem;font-family:var(--font-family-mono);padding:3px 10px;border-radius:8px;background:#33415566;color:var(--color-text-secondary);white-space:nowrap;flex-shrink:0}.ticket-bottom{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.ticket-user-info{display:flex;align-items:center;gap:8px;overflow:hidden}.ticket-avatar,.ticket-avatar-fallback{width:22px;height:22px;border-radius:6px;flex-shrink:0}.ticket-avatar{object-fit:cover}.ticket-avatar-fallback{background:linear-gradient(135deg,#475569,#64748b);color:#fff;display:flex;align-items:center;justify-content:center;font-size:.7rem;font-weight:700}.ticket-user-name{font-size:.82rem;font-weight:600;white-space:nowrap}.ticket-user-email{font-size:.78rem;color:var(--color-text-secondary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:180px}.ticket-premium-badge{display:inline-flex;align-items:center;gap:3px;font-size:.68rem;padding:2px 8px;border-radius:12px;background:#eab30826;color:#fbbf24;font-weight:600;white-space:nowrap;flex-shrink:0}.ticket-meta{display:flex;align-items:center;gap:10px;flex-shrink:0}.ticket-category-tag{font-size:.72rem;padding:3px 10px;border-radius:20px;font-weight:600;white-space:nowrap}.ticket-time{display:flex;align-items:center;gap:4px;font-size:.78rem;color:var(--color-text-secondary);white-space:nowrap}.empty-state-box{display:flex;flex-direction:column;align-items:center;gap:10px;padding:48px 20px;color:var(--color-text-secondary);background:#1e293b99;border:1px solid rgba(51,65,85,.5);border-radius:14px}.empty-state-box p{margin:0;font-size:.9rem}.ticket-actions{display:flex;align-items:center;flex-shrink:0}.ticket-refund-btn{display:flex;align-items:center;gap:6px;padding:8px 16px;border-radius:10px;border:1px solid rgba(245,158,11,.3);background:#f59e0b14;color:#fbbf24;font-size:.82rem;font-weight:600;cursor:pointer;font-family:inherit;transition:all .2s ease;white-space:nowrap}.ticket-refund-btn:hover{background:#f59e0b2e;border-color:#f59e0b80;transform:translateY(-1px);box-shadow:0 4px 16px #f59e0b26}.ticket-refunded-badge{display:inline-flex;align-items:center;gap:4px;font-size:.72rem;padding:3px 10px;border-radius:20px;background:#22c55e1f;color:#4ade80;font-weight:700;white-space:nowrap}.ticket-resolved-badge{font-size:.72rem;padding:3px 10px;border-radius:20px;background:#6366f11f;color:#a5b4fc;font-weight:700;white-space:nowrap}@media(max-width:768px){.support-stats-row{flex-direction:column}.ticket-bottom{flex-direction:column;align-items:flex-start}.ticket-card{flex-direction:column}.ticket-actions{align-self:flex-end}}@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(/assets/KaTeX_AMS-Regular-BQhdFMY1.woff2) format("woff2"),url(/assets/KaTeX_AMS-Regular-DMm9YOAa.woff) format("woff"),url(/assets/KaTeX_AMS-Regular-DRggAlZN.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Caligraphic-Bold-Dq_IR9rO.woff2) format("woff2"),url(/assets/KaTeX_Caligraphic-Bold-BEiXGLvX.woff) format("woff"),url(/assets/KaTeX_Caligraphic-Bold-ATXxdsX0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Caligraphic-Regular-Di6jR-x-.woff2) format("woff2"),url(/assets/KaTeX_Caligraphic-Regular-CTRA-rTL.woff) format("woff"),url(/assets/KaTeX_Caligraphic-Regular-wX97UBjC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Fraktur-Bold-CL6g_b3V.woff2) format("woff2"),url(/assets/KaTeX_Fraktur-Bold-BsDP51OF.woff) format("woff"),url(/assets/KaTeX_Fraktur-Bold-BdnERNNW.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Fraktur-Regular-CTYiF6lA.woff2) format("woff2"),url(/assets/KaTeX_Fraktur-Regular-Dxdc4cR9.woff) format("woff"),url(/assets/KaTeX_Fraktur-Regular-CB_wures.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Main-Bold-Cx986IdX.woff2) format("woff2"),url(/assets/KaTeX_Main-Bold-Jm3AIy58.woff) format("woff"),url(/assets/KaTeX_Main-Bold-waoOVXN0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Main-BoldItalic-DxDJ3AOS.woff2) format("woff2"),url(/assets/KaTeX_Main-BoldItalic-SpSLRI95.woff) format("woff"),url(/assets/KaTeX_Main-BoldItalic-DzxPMmG6.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Main-Italic-NWA7e6Wa.woff2) format("woff2"),url(/assets/KaTeX_Main-Italic-BMLOBm91.woff) format("woff"),url(/assets/KaTeX_Main-Italic-3WenGoN9.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Main-Regular-B22Nviop.woff2) format("woff2"),url(/assets/KaTeX_Main-Regular-Dr94JaBh.woff) format("woff"),url(/assets/KaTeX_Main-Regular-ypZvNtVU.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Math-BoldItalic-CZnvNsCZ.woff2) format("woff2"),url(/assets/KaTeX_Math-BoldItalic-iY-2wyZ7.woff) format("woff"),url(/assets/KaTeX_Math-BoldItalic-B3XSjfu4.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Math-Italic-t53AETM-.woff2) format("woff2"),url(/assets/KaTeX_Math-Italic-DA0__PXp.woff) format("woff"),url(/assets/KaTeX_Math-Italic-flOr_0UB.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:700;src:url(/assets/KaTeX_SansSerif-Bold-D1sUS0GD.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Bold-DbIhKOiC.woff) format("woff"),url(/assets/KaTeX_SansSerif-Bold-CFMepnvq.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(/assets/KaTeX_SansSerif-Italic-C3H0VqGB.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Italic-DN2j7dab.woff) format("woff"),url(/assets/KaTeX_SansSerif-Italic-YYjJ1zSn.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(/assets/KaTeX_SansSerif-Regular-DDBCnlJ7.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Regular-CS6fqUqJ.woff) format("woff"),url(/assets/KaTeX_SansSerif-Regular-BNo7hRIc.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Script-Regular-D3wIWfF6.woff2) format("woff2"),url(/assets/KaTeX_Script-Regular-D5yQViql.woff) format("woff"),url(/assets/KaTeX_Script-Regular-C5JkGWo-.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size1-Regular-mCD8mA8B.woff2) format("woff2"),url(/assets/KaTeX_Size1-Regular-C195tn64.woff) format("woff"),url(/assets/KaTeX_Size1-Regular-Dbsnue_I.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size2-Regular-Dy4dx90m.woff2) format("woff2"),url(/assets/KaTeX_Size2-Regular-oD1tc_U0.woff) format("woff"),url(/assets/KaTeX_Size2-Regular-B7gKUWhC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(data:font/woff2;base64,d09GMgABAAAAAA4oAA4AAAAAHbQAAA3TAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAABmAAgRQIDgmcDBEICo1oijYBNgIkA14LMgAEIAWJAAeBHAyBHBvbGiMRdnO0IkRRkiYDgr9KsJ1NUAf2kILNxgUmgqIgq1P89vcbIcmsQbRps3vCcXdYOKSWEPEKgZgQkprQQsxIXUgq0DqpGKmIvrgkeVGtEQD9DzAO29fM9jYhxZEsL2FeURH2JN4MIcTdO049NCVdxQ/w9NrSYFEBKTDKpLKfNkCGDc1RwjZLQcm3vqJ2UW9Xfa3tgAHz6ivp6vgC2yD4/6352ndnN0X0TL7seypkjZlMsjmZnf0Mm5Q+JykRWQBKCVCVPbARPXWyQtb5VgLB6Biq7/Uixcj2WGqdI8tGSgkuRG+t910GKP2D7AQH0DB9FMDW/obJZ8giFI3Wg8Cvevz0M+5m0rTh7XDBlvo9Y4vm13EXmfttwI4mBo1EG15fxJhUiCLbiiyCf/ZA6MFAhg3pGIZGdGIVjtPn6UcMk9A/UUr9PhoNsCENw1APAq0gpH73e+M+0ueyHbabc3vkbcdtzcf/fiy+NxQEjf9ud/ELBHAXJ0nk4z+MXH2Ev/kWyV4k7SkvpPc9Qr38F6RPWnM9cN6DJ0AdD1BhtgABtmoRoFCvPsBAumNm6soZG2Gk5GyVTo2sJncSyp0jQTYoR6WDvTwaaEcHsxHfvuWhHA3a6bN7twRKtcGok6NsCi7jYRrM2jExsUFMxMQYuJbMhuWNOumEJy9hi29Dmg5zMp/A5+hhPG19j1vBrq8JTLr8ki5VLPmG/PynJHVul440bxg5xuymHUFPBshC+nA9I1FmwbRBTNHAcik3Oae0cxKoI3MOriM42UrPe51nsaGxJ+WfXubAsP84aabUlQSJ1IiE0iPETLUU4CATgfXSCSpuRFRmCGbO+wSpAnzaeaCYW1VNEysRtuXCEL1kUFUbbtMv3Tilt/1c11jt3Q5bbMa84cpWipp8Elw3MZhOHsOlwwVUQM3lAR35JiFQbaYCRnMF2lxAWoOg2gyoIV4PouX8HytNIfLhqpJtXB4vjiViUI8IJ7bkC4ikkQvKksnOTKICwnqWSZ9YS5f0WCxmpgjbIq7EJcM4aI2nmhLNY2JIUgOjXZFWBHb+x5oh6cwb0Tv1ackHdKi0I9OO2wE9aogIOn540CCCziyhN+IaejtgAONKznHlHyutPrHGwCx9S6B8kfS4Mfi4Eyv7OU730bT1SCBjt834cXsf43zVjPUqqJjgrjeGnBxSG4aYAKFuVbeCfkDIjAqMb6yLNIbCuvXhMH2/+k2vkNpkORhR59N1CkzoOENvneIosjYmuTxlhUzaGEJQ/iWqx4dmwpmKjrwTiTGTCVozNAYqk/zXOndWxuWSmJkQpJw3pK5KX6QrLt5LATMqpmPAQhkhK6PUjzHUn7E0gHE0kPE0iKkolgkUx9SZmVAdDgpffdyJKg3k7VmzYGCwVXGz/tXmkOIp+vcWs+EMuhhvN0h9uhfzWJziBQmCREGSIFmQIkgVpAnSBRmC//6hkLZwaVhwxlrJSOdqlFtOYxlau9F2QN5Y98xmIAsiM1HVp2VFX+DHHGg6Ecjh3vmqtidX3qHI2qycTk/iwxSt5UzTmEP92ZBnEWTk4Mx8Mpl78ZDokxg/KWb+Q0QkvdKVmq3TMW+RXEgrsziSAfNXFMhDc60N5N9jQzjfO0kBKpUZl0ZmwJ41j/B9Hz6wmRaJB84niNmQrzp9eSlQCDDzazGDdVi3P36VZQ+Jy4f9UBNp+3zTjqI4abaFAm+GShVaXlsGdF3FYzZcDI6cori4kMxUECl9IjJZpzkvitAoxKue+90pDMvcKRxLl53TmOKCmV/xRolNKSqqUxc6LStOETmFOiLZZptlZepcKiAzteG8PEdpnQpbOMNcMsR4RR2Bs0cKFEvSmIjAFcnarqwUL4lDhHmnVkwu1IwshbiCcgvOheZuYyOteufZZwlcTlLgnZ3o/WcYdzZHW/WGaqaVfmTZ1aWCceJjkbZqsfbkOtcFlUZM/jy+hXHDbaUobWqqXaeWobbLO99yG5N3U4wxco0rQGGcOLASFMXeJoham8M+/x6O2WywK2l4HGbq1CoUyC/IZikQhdq3SiuNrvAEj0AVu9x2x3lp/xWzahaxidezFVtdcb5uEnzyl0ZmYiuKI0exvCd4Xc9CV1KB0db00z92wDPde0kukbvZIWN6jUWFTmPIC/Y4UPCm8UfDTFZpZNon1qLFTkBhxzB+FjQRA2Q/YRJT8pQigslMaUpFyAG8TMlXigiqmAZX4xgijKjRlGpLE0GdplRfCaJo0JQaSxNBk6ZmMzcya0FmrcisDdn0Q3HI2sWSppYigmlM1XT/kLQZSNpMJG0WkjYbSZuDpM1F0uYhFc1HxU4m1QJjDK6iL0S5uSj5rgXc3RejEigtcRBtqYPQsiTskmO5vosV+q4VGIKbOkDg0jtRrq+Em1YloaTFar3EGr1EUC8R0kus1Uus00usL97ABr2BjXoDm/QGNhuWtMVBKOwg/i78lT7hBsAvDmwHc/ao3vmUbBmhjeYySZNWvGkfZAgISDSaDo1SVpzGDsAEkF8B+gEapViUoZgUWXcRIGFZNm6gWbAKk0bp0k1MHG9fLYtV4iS2SmLEQFARzRcnf9PUS0LVn05/J9MiRRBU3v2IrvW974v4N00L7ZMk0wXP1409CHo/an8zTRHD3eSJ6m8D4YMkZNl3M79sqeuAsr/m3f+8/yl7A50aiAEJgeBeMWzu7ui9UfUBCe2TIqZIoOd/3/udRBOQidQZUERzb2/VwZN1H/Sju82ew2H2Wfr6qvfVf3hqwDvAIpkQVFy4B9Pe9e4/XvPeceu7h3dvO56iJPf0+A6cqA2ip18ER+iFgggiuOkvj24bby0N9j2UHIkgqIt+sVgfodC4YghLSMjSZbH0VR/6dMDrYJeKHilKTemt6v6kvzvn3/RrdWtr0GoN/xL+Sex/cPYLUpepx9cz/D46UPU5KXgAQa+NDps1v6J3xP1i2HtaDB0M9aX2deA7SYff//+gUCovMmIK/qfsFcOk+4Y5ZN97XlG6zebqtMbKgeRFi51vnxTQYBUik2rS/Cn6PC8ADR8FGxsRPB82dzfND90gIcshOcYUkfjherBz53odpm6TP8txlwOZ71xmfHHOvq053qFF/MRlS3jP0ELudrf2OeN8DHvp6ZceLe8qKYvWz/7yp0u4dKPfli3CYq0O13Ih71mylJ80tOi10On8wi+F4+LWgDPeJ30msSQt9/vkmHq9/Lvo2b461mP801v3W4xTcs6CbvF9UDdrSt+A8OUbpSh55qAUFXWznBBfdeJ8a4d7ugT5tvxUza3h9m4H7ptTqiG4z0g5dc0X29OcGlhpGFMpQo9ytTS+NViZpNdvU4kWx+LKxNY10kQ1yqGXrhe4/1nvP7E+nd5A92TtaRplbHSqoIdOqtRWti+fkB5/n1+/VvCmz12pG1kpQWsfi1ftlBobm0bpngs16CHkbIwdLnParxtTV3QYRlfJ0KFskH7pdN/YDn+yRuSd7sNH3aO0DYPggk6uWuXrfOc+fa3VTxFVvKaNxHsiHmsXyCLIE5yuOeN3/Jdf8HBL/5M6shjyhxHx9BjB1O0+4NLOnjLLSxwO7ukN4jMbOIcD879KLSi6Pk61Oqm2377n8079PXEEQ7cy7OKEC9nbpet118fxweTafpt69x/Bt8UqGzNQt7aelpc44dn5cqhwf71+qKp/Zf/+a0zcizOUWpl/iBcSXip0pplkatCchoH5c5aUM8I7/dWxAej8WicPL1URFZ9BDJelUwEwTkGqUhgSlydVes95YdXvhh9Gfz/aeFWvgVb4tuLbcv4+wLdutVZv/cUonwBD/6eDlE0aSiKK/uoH3+J1wDE/jMVqY2ysGufN84oIXB0sPzy8ollX/LegY74DgJXJR57sn+VGza0x3DnuIgABFM15LmajjjsNlYj+JEZGbuRYcAMOWxFkPN2w6Wd46xo4gVWQR/X4lyI/R6K/YK0110GzudPRW7Y+UOBGTfNNzHeYT0fiH0taunBpq9HEW8OKSaBGj21L0MqenEmNRWBAWDWAk4CpNoEZJ2tTaPFgbQYj8HxtFilErs3BTRwT8uO1NXQaWfIotchmPkAF5mMBAliEmZiOGVgCG9LgRzpscMAOOwowlT3JhusdazXGSC/hxR3UlmWVwWHpOIKheqONvjyhSiTHIkVUco5bnji8m//zL7PKaT1Vl5I6UE609f+gkr6MZKVyKc7zJRmCahLsdlyA5fdQkRSan9LgnnLEyGSkaKJCJog0wAgvepWBt80+1yKln1bMVtCljfNWDueKLsWwaEbBSfSPTEmVRsUcYYMnEjcjeyCZzBXK9E9BYBXLKjOSpUDR+nEV3TFSUdQaz+ot98QxgXwx0GQ+EEUAKB2qZPkQQ0GqFD8UPFMqyaCHM24BZmSGic9EYMagKizOw9Hz50DMrDLrqqLkTAhplMictiCAx5S3BIUQdeJeLnBy2CNtMfz6cV4u8XKoFZQesbf9YZiIERiHjaNodDW6LgcirX/mPnJIkBGDUpTBhSa0EIr38D5hCIszhCM8URGBqImoWjpvpt1ebu/v3Gl3qJfMnNM+9V+kiRFyROTPHQWOcs1dNW94/ukKMPZBvDi55i5CttdeJz84DLngLqjcdwEZ87bFFR8CIG35OAkDVN6VRDZ7aq67NteYqZ2lpT8oYB2CytoBd6VuAx4WgiAsnuj3WohG+LugzXiQRDeM3XYXlULv4dp5VFYC) format("woff2"),url(/assets/KaTeX_Size3-Regular-CTq5MqoE.woff) format("woff"),url(/assets/KaTeX_Size3-Regular-DgpXs0kz.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size4-Regular-Dl5lxZxV.woff2) format("woff2"),url(/assets/KaTeX_Size4-Regular-BF-4gkZK.woff) format("woff"),url(/assets/KaTeX_Size4-Regular-DWFBv043.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Typewriter-Regular-CO6r4hn1.woff2) format("woff2"),url(/assets/KaTeX_Typewriter-Regular-C0xS9mPB.woff) format("woff"),url(/assets/KaTeX_Typewriter-Regular-D3Ib7_Hf.ttf) format("truetype")}.katex{font: 1.21em KaTeX_Main,Times New Roman,serif;line-height:1.2;text-indent:0;text-rendering:auto}.katex *{-ms-high-contrast-adjust:none!important;border-color:currentColor}.katex .katex-version:after{content:"0.16.28"}.katex .katex-mathml{clip:rect(1px,1px,1px,1px);border:0;height:1px;overflow:hidden;padding:0;position:absolute;width:1px}.katex .katex-html>.newline{display:block}.katex .base{position:relative;white-space:nowrap;width:-webkit-min-content;width:-moz-min-content;width:min-content}.katex .base,.katex .strut{display:inline-block}.katex .textbf{font-weight:700}.katex .textit{font-style:italic}.katex .textrm{font-family:KaTeX_Main}.katex .textsf{font-family:KaTeX_SansSerif}.katex .texttt{font-family:KaTeX_Typewriter}.katex .mathnormal{font-family:KaTeX_Math;font-style:italic}.katex .mathit{font-family:KaTeX_Main;font-style:italic}.katex .mathrm{font-style:normal}.katex .mathbf{font-family:KaTeX_Main;font-weight:700}.katex .boldsymbol{font-family:KaTeX_Math;font-style:italic;font-weight:700}.katex .amsrm,.katex .mathbb,.katex .textbb{font-family:KaTeX_AMS}.katex .mathcal{font-family:KaTeX_Caligraphic}.katex .mathfrak,.katex .textfrak{font-family:KaTeX_Fraktur}.katex .mathboldfrak,.katex .textboldfrak{font-family:KaTeX_Fraktur;font-weight:700}.katex .mathtt{font-family:KaTeX_Typewriter}.katex .mathscr,.katex .textscr{font-family:KaTeX_Script}.katex .mathsf,.katex .textsf{font-family:KaTeX_SansSerif}.katex .mathboldsf,.katex .textboldsf{font-family:KaTeX_SansSerif;font-weight:700}.katex .mathitsf,.katex .mathsfit,.katex .textitsf{font-family:KaTeX_SansSerif;font-style:italic}.katex .mainrm{font-family:KaTeX_Main;font-style:normal}.katex .vlist-t{border-collapse:collapse;display:inline-table;table-layout:fixed}.katex .vlist-r{display:table-row}.katex .vlist{display:table-cell;position:relative;vertical-align:bottom}.katex .vlist>span{display:block;height:0;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{overflow:hidden;width:0}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{display:table-cell;font-size:1px;min-width:2px;vertical-align:bottom;width:2px}.katex .vbox{align-items:baseline;display:inline-flex;flex-direction:column}.katex .hbox{width:100%}.katex .hbox,.katex .thinbox{display:inline-flex;flex-direction:row}.katex .thinbox{max-width:0;width:0}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .hdashline,.katex .hline,.katex .mfrac .frac-line,.katex .overline .overline-line,.katex .rule,.katex .underline .underline-line{min-height:1px}.katex .mspace{display:inline-block}.katex .clap,.katex .llap,.katex .rlap{position:relative;width:0}.katex .clap>.inner,.katex .llap>.inner,.katex .rlap>.inner{position:absolute}.katex .clap>.fix,.katex .llap>.fix,.katex .rlap>.fix{display:inline-block}.katex .llap>.inner{right:0}.katex .clap>.inner,.katex .rlap>.inner{left:0}.katex .clap>.inner>span{margin-left:-50%;margin-right:50%}.katex .rule{border:0 solid;display:inline-block;position:relative}.katex .hline,.katex .overline .overline-line,.katex .underline .underline-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .hdashline{border-bottom-style:dashed;display:inline-block;width:100%}.katex .sqrt>.root{margin-left:.2777777778em;margin-right:-.5555555556em}.katex .fontsize-ensurer.reset-size1.size1,.katex .sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .sizing.reset-size1.size3{font-size:1.4em}.katex .fontsize-ensurer.reset-size1.size4,.katex .sizing.reset-size1.size4{font-size:1.6em}.katex .fontsize-ensurer.reset-size1.size5,.katex .sizing.reset-size1.size5{font-size:1.8em}.katex .fontsize-ensurer.reset-size1.size6,.katex .sizing.reset-size1.size6{font-size:2em}.katex .fontsize-ensurer.reset-size1.size7,.katex .sizing.reset-size1.size7{font-size:2.4em}.katex .fontsize-ensurer.reset-size1.size8,.katex .sizing.reset-size1.size8{font-size:2.88em}.katex .fontsize-ensurer.reset-size1.size9,.katex .sizing.reset-size1.size9{font-size:3.456em}.katex .fontsize-ensurer.reset-size1.size10,.katex .sizing.reset-size1.size10{font-size:4.148em}.katex .fontsize-ensurer.reset-size1.size11,.katex .sizing.reset-size1.size11{font-size:4.976em}.katex .fontsize-ensurer.reset-size2.size1,.katex .sizing.reset-size2.size1{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size2.size2,.katex .sizing.reset-size2.size2{font-size:1em}.katex .fontsize-ensurer.reset-size2.size3,.katex .sizing.reset-size2.size3{font-size:1.1666666667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .sizing.reset-size2.size4{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size2.size5,.katex .sizing.reset-size2.size5{font-size:1.5em}.katex .fontsize-ensurer.reset-size2.size6,.katex .sizing.reset-size2.size6{font-size:1.6666666667em}.katex .fontsize-ensurer.reset-size2.size7,.katex .sizing.reset-size2.size7{font-size:2em}.katex .fontsize-ensurer.reset-size2.size8,.katex .sizing.reset-size2.size8{font-size:2.4em}.katex .fontsize-ensurer.reset-size2.size9,.katex .sizing.reset-size2.size9{font-size:2.88em}.katex .fontsize-ensurer.reset-size2.size10,.katex .sizing.reset-size2.size10{font-size:3.4566666667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .sizing.reset-size2.size11{font-size:4.1466666667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .sizing.reset-size3.size1{font-size:.7142857143em}.katex .fontsize-ensurer.reset-size3.size2,.katex .sizing.reset-size3.size2{font-size:.8571428571em}.katex .fontsize-ensurer.reset-size3.size3,.katex .sizing.reset-size3.size3{font-size:1em}.katex .fontsize-ensurer.reset-size3.size4,.katex .sizing.reset-size3.size4{font-size:1.1428571429em}.katex .fontsize-ensurer.reset-size3.size5,.katex .sizing.reset-size3.size5{font-size:1.2857142857em}.katex .fontsize-ensurer.reset-size3.size6,.katex .sizing.reset-size3.size6{font-size:1.4285714286em}.katex .fontsize-ensurer.reset-size3.size7,.katex .sizing.reset-size3.size7{font-size:1.7142857143em}.katex .fontsize-ensurer.reset-size3.size8,.katex .sizing.reset-size3.size8{font-size:2.0571428571em}.katex .fontsize-ensurer.reset-size3.size9,.katex .sizing.reset-size3.size9{font-size:2.4685714286em}.katex .fontsize-ensurer.reset-size3.size10,.katex .sizing.reset-size3.size10{font-size:2.9628571429em}.katex .fontsize-ensurer.reset-size3.size11,.katex .sizing.reset-size3.size11{font-size:3.5542857143em}.katex .fontsize-ensurer.reset-size4.size1,.katex .sizing.reset-size4.size1{font-size:.625em}.katex .fontsize-ensurer.reset-size4.size2,.katex .sizing.reset-size4.size2{font-size:.75em}.katex .fontsize-ensurer.reset-size4.size3,.katex .sizing.reset-size4.size3{font-size:.875em}.katex .fontsize-ensurer.reset-size4.size4,.katex .sizing.reset-size4.size4{font-size:1em}.katex .fontsize-ensurer.reset-size4.size5,.katex .sizing.reset-size4.size5{font-size:1.125em}.katex .fontsize-ensurer.reset-size4.size6,.katex .sizing.reset-size4.size6{font-size:1.25em}.katex .fontsize-ensurer.reset-size4.size7,.katex .sizing.reset-size4.size7{font-size:1.5em}.katex .fontsize-ensurer.reset-size4.size8,.katex .sizing.reset-size4.size8{font-size:1.8em}.katex .fontsize-ensurer.reset-size4.size9,.katex .sizing.reset-size4.size9{font-size:2.16em}.katex .fontsize-ensurer.reset-size4.size10,.katex .sizing.reset-size4.size10{font-size:2.5925em}.katex .fontsize-ensurer.reset-size4.size11,.katex .sizing.reset-size4.size11{font-size:3.11em}.katex .fontsize-ensurer.reset-size5.size1,.katex .sizing.reset-size5.size1{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .sizing.reset-size5.size2{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .sizing.reset-size5.size3{font-size:.7777777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .sizing.reset-size5.size4{font-size:.8888888889em}.katex .fontsize-ensurer.reset-size5.size5,.katex .sizing.reset-size5.size5{font-size:1em}.katex .fontsize-ensurer.reset-size5.size6,.katex .sizing.reset-size5.size6{font-size:1.1111111111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .sizing.reset-size5.size7{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size5.size8,.katex .sizing.reset-size5.size8{font-size:1.6em}.katex .fontsize-ensurer.reset-size5.size9,.katex .sizing.reset-size5.size9{font-size:1.92em}.katex .fontsize-ensurer.reset-size5.size10,.katex .sizing.reset-size5.size10{font-size:2.3044444444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .sizing.reset-size5.size11{font-size:2.7644444444em}.katex .fontsize-ensurer.reset-size6.size1,.katex .sizing.reset-size6.size1{font-size:.5em}.katex .fontsize-ensurer.reset-size6.size2,.katex .sizing.reset-size6.size2{font-size:.6em}.katex .fontsize-ensurer.reset-size6.size3,.katex .sizing.reset-size6.size3{font-size:.7em}.katex .fontsize-ensurer.reset-size6.size4,.katex .sizing.reset-size6.size4{font-size:.8em}.katex .fontsize-ensurer.reset-size6.size5,.katex .sizing.reset-size6.size5{font-size:.9em}.katex .fontsize-ensurer.reset-size6.size6,.katex .sizing.reset-size6.size6{font-size:1em}.katex .fontsize-ensurer.reset-size6.size7,.katex .sizing.reset-size6.size7{font-size:1.2em}.katex .fontsize-ensurer.reset-size6.size8,.katex .sizing.reset-size6.size8{font-size:1.44em}.katex .fontsize-ensurer.reset-size6.size9,.katex .sizing.reset-size6.size9{font-size:1.728em}.katex .fontsize-ensurer.reset-size6.size10,.katex .sizing.reset-size6.size10{font-size:2.074em}.katex .fontsize-ensurer.reset-size6.size11,.katex .sizing.reset-size6.size11{font-size:2.488em}.katex .fontsize-ensurer.reset-size7.size1,.katex .sizing.reset-size7.size1{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size7.size2,.katex .sizing.reset-size7.size2{font-size:.5em}.katex .fontsize-ensurer.reset-size7.size3,.katex .sizing.reset-size7.size3{font-size:.5833333333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .sizing.reset-size7.size4{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size7.size5,.katex .sizing.reset-size7.size5{font-size:.75em}.katex .fontsize-ensurer.reset-size7.size6,.katex .sizing.reset-size7.size6{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size7.size7,.katex .sizing.reset-size7.size7{font-size:1em}.katex .fontsize-ensurer.reset-size7.size8,.katex .sizing.reset-size7.size8{font-size:1.2em}.katex .fontsize-ensurer.reset-size7.size9,.katex .sizing.reset-size7.size9{font-size:1.44em}.katex .fontsize-ensurer.reset-size7.size10,.katex .sizing.reset-size7.size10{font-size:1.7283333333em}.katex .fontsize-ensurer.reset-size7.size11,.katex .sizing.reset-size7.size11{font-size:2.0733333333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .sizing.reset-size8.size1{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .sizing.reset-size8.size2{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .sizing.reset-size8.size3{font-size:.4861111111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .sizing.reset-size8.size4{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size8.size5,.katex .sizing.reset-size8.size5{font-size:.625em}.katex .fontsize-ensurer.reset-size8.size6,.katex .sizing.reset-size8.size6{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .sizing.reset-size8.size7{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size8.size8,.katex .sizing.reset-size8.size8{font-size:1em}.katex .fontsize-ensurer.reset-size8.size9,.katex .sizing.reset-size8.size9{font-size:1.2em}.katex .fontsize-ensurer.reset-size8.size10,.katex .sizing.reset-size8.size10{font-size:1.4402777778em}.katex .fontsize-ensurer.reset-size8.size11,.katex .sizing.reset-size8.size11{font-size:1.7277777778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .sizing.reset-size9.size1{font-size:.2893518519em}.katex .fontsize-ensurer.reset-size9.size2,.katex .sizing.reset-size9.size2{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .sizing.reset-size9.size3{font-size:.4050925926em}.katex .fontsize-ensurer.reset-size9.size4,.katex .sizing.reset-size9.size4{font-size:.462962963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .sizing.reset-size9.size5{font-size:.5208333333em}.katex .fontsize-ensurer.reset-size9.size6,.katex .sizing.reset-size9.size6{font-size:.5787037037em}.katex .fontsize-ensurer.reset-size9.size7,.katex .sizing.reset-size9.size7{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .sizing.reset-size9.size8{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size9.size9,.katex .sizing.reset-size9.size9{font-size:1em}.katex .fontsize-ensurer.reset-size9.size10,.katex .sizing.reset-size9.size10{font-size:1.2002314815em}.katex .fontsize-ensurer.reset-size9.size11,.katex .sizing.reset-size9.size11{font-size:1.4398148148em}.katex .fontsize-ensurer.reset-size10.size1,.katex .sizing.reset-size10.size1{font-size:.2410800386em}.katex .fontsize-ensurer.reset-size10.size2,.katex .sizing.reset-size10.size2{font-size:.2892960463em}.katex .fontsize-ensurer.reset-size10.size3,.katex .sizing.reset-size10.size3{font-size:.337512054em}.katex .fontsize-ensurer.reset-size10.size4,.katex .sizing.reset-size10.size4{font-size:.3857280617em}.katex .fontsize-ensurer.reset-size10.size5,.katex .sizing.reset-size10.size5{font-size:.4339440694em}.katex .fontsize-ensurer.reset-size10.size6,.katex .sizing.reset-size10.size6{font-size:.4821600771em}.katex .fontsize-ensurer.reset-size10.size7,.katex .sizing.reset-size10.size7{font-size:.5785920926em}.katex .fontsize-ensurer.reset-size10.size8,.katex .sizing.reset-size10.size8{font-size:.6943105111em}.katex .fontsize-ensurer.reset-size10.size9,.katex .sizing.reset-size10.size9{font-size:.8331726133em}.katex .fontsize-ensurer.reset-size10.size10,.katex .sizing.reset-size10.size10{font-size:1em}.katex .fontsize-ensurer.reset-size10.size11,.katex .sizing.reset-size10.size11{font-size:1.1996142719em}.katex .fontsize-ensurer.reset-size11.size1,.katex .sizing.reset-size11.size1{font-size:.2009646302em}.katex .fontsize-ensurer.reset-size11.size2,.katex .sizing.reset-size11.size2{font-size:.2411575563em}.katex .fontsize-ensurer.reset-size11.size3,.katex .sizing.reset-size11.size3{font-size:.2813504823em}.katex .fontsize-ensurer.reset-size11.size4,.katex .sizing.reset-size11.size4{font-size:.3215434084em}.katex .fontsize-ensurer.reset-size11.size5,.katex .sizing.reset-size11.size5{font-size:.3617363344em}.katex .fontsize-ensurer.reset-size11.size6,.katex .sizing.reset-size11.size6{font-size:.4019292605em}.katex .fontsize-ensurer.reset-size11.size7,.katex .sizing.reset-size11.size7{font-size:.4823151125em}.katex .fontsize-ensurer.reset-size11.size8,.katex .sizing.reset-size11.size8{font-size:.578778135em}.katex .fontsize-ensurer.reset-size11.size9,.katex .sizing.reset-size11.size9{font-size:.6945337621em}.katex .fontsize-ensurer.reset-size11.size10,.katex .sizing.reset-size11.size10{font-size:.8336012862em}.katex .fontsize-ensurer.reset-size11.size11,.katex .sizing.reset-size11.size11{font-size:1em}.katex .delimsizing.size1{font-family:KaTeX_Size1}.katex .delimsizing.size2{font-family:KaTeX_Size2}.katex .delimsizing.size3{font-family:KaTeX_Size3}.katex .delimsizing.size4{font-family:KaTeX_Size4}.katex .delimsizing.mult .delim-size1>span{font-family:KaTeX_Size1}.katex .delimsizing.mult .delim-size4>span{font-family:KaTeX_Size4}.katex .nulldelimiter{display:inline-block;width:.12em}.katex .delimcenter,.katex .op-symbol{position:relative}.katex .op-symbol.small-op{font-family:KaTeX_Size1}.katex .op-symbol.large-op{font-family:KaTeX_Size2}.katex .accent>.vlist-t,.katex .op-limits>.vlist-t{text-align:center}.katex .accent .accent-body{position:relative}.katex .accent .accent-body:not(.accent-full){width:0}.katex .overlay{display:block}.katex .mtable .vertical-separator{display:inline-block;min-width:1px}.katex .mtable .arraycolsep{display:inline-block}.katex .mtable .col-align-c>.vlist-t{text-align:center}.katex .mtable .col-align-l>.vlist-t{text-align:left}.katex .mtable .col-align-r>.vlist-t{text-align:right}.katex .svg-align{text-align:left}.katex svg{fill:currentColor;stroke:currentColor;fill-rule:nonzero;fill-opacity:1;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1;display:block;height:inherit;position:absolute;width:100%}.katex svg path{stroke:none}.katex img{border-style:none;max-height:none;max-width:none;min-height:0;min-width:0}.katex .stretchy{display:block;overflow:hidden;position:relative;width:100%}.katex .stretchy:after,.katex .stretchy:before{content:""}.katex .hide-tail{overflow:hidden;position:relative;width:100%}.katex .halfarrow-left{left:0;overflow:hidden;position:absolute;width:50.2%}.katex .halfarrow-right{overflow:hidden;position:absolute;right:0;width:50.2%}.katex .brace-left{left:0;overflow:hidden;position:absolute;width:25.1%}.katex .brace-center{left:25%;overflow:hidden;position:absolute;width:50%}.katex .brace-right{overflow:hidden;position:absolute;right:0;width:25.1%}.katex .x-arrow-pad{padding:0 .5em}.katex .cd-arrow-pad{padding:0 .55556em 0 .27778em}.katex .mover,.katex .munder,.katex .x-arrow{text-align:center}.katex .boxpad{padding:0 .3em}.katex .fbox,.katex .fcolorbox{border:.04em solid;box-sizing:border-box}.katex .cancel-pad{padding:0 .2em}.katex .cancel-lap{margin-left:-.2em;margin-right:-.2em}.katex .sout{border-bottom-style:solid;border-bottom-width:.08em}.katex .angl{border-right:.049em solid;border-top:.049em solid;box-sizing:border-box;margin-right:.03889em}.katex .anglpad{padding:0 .03889em}.katex .eqn-num:before{content:"(" counter(katexEqnNo) ")";counter-increment:katexEqnNo}.katex .mml-eqn-num:before{content:"(" counter(mmlEqnNo) ")";counter-increment:mmlEqnNo}.katex .mtr-glue{width:50%}.katex .cd-vert-arrow{display:inline-block;position:relative}.katex .cd-label-left{display:inline-block;position:absolute;right:calc(50% + .3em);text-align:left}.katex .cd-label-right{display:inline-block;left:calc(50% + .3em);position:absolute;text-align:right}.katex-display{display:block;margin:1em 0;text-align:center}.katex-display>.katex{display:block;text-align:center;white-space:nowrap}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.tag{left:0;right:auto}.katex-display.fleqn>.katex{padding-left:2em;text-align:left}body{counter-reset:katexEqnNo mmlEqnNo}