@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";
@import "https://fonts.googleapis.com/css2?family=Lexend:wght@400;500;600;700&display=swap";
@import "https://fonts.googleapis.com/css2?family=Rubik+Doodle+Shadow&display=swap";
@import "https://fonts.googleapis.com/css2?family=Architects+Daughter&family=Caveat:wght@500;700&display=swap";
:root{--color-bg-primary:#f8f9fc;--color-bg-secondary:#fff;--color-bg-tertiary:#f1f3f8;--color-bg-elevated:#fff;--color-surface:#00000008;--color-surface-hover:#0000000d;--color-surface-active:#00000014;--color-border:#0000001a;--color-border-strong:#0000002e;--color-text-primary:#111827;--color-text-secondary:#4b5563;--color-text-muted:#9ca3af;--color-accent:#16a34a;--color-accent-light:#22c55e;--color-accent-dark:#15803d;--color-accent-subtle:#16a34a1a;--color-brand-purple-lightest:#d8c5fa;--color-brand-purple-lighter:#b794f6;--color-brand-purple-light:#9965f1;--color-brand-purple:#7c3aed;--color-brand-purple-dark:#6428c7;--color-brand-purple-darker:#4b1a99;--color-brand-purple-darkest:#2c0e5e;--color-brand-blue-lightest:#c2dcf2;--color-brand-blue-lighter:#95c1e9;--color-brand-blue-light:#6ba6e0;--color-brand-blue:#4a90d9;--color-brand-blue-dark:#357abd;--color-brand-blue-darker:#24588c;--color-brand-blue-darkest:#133354;--color-brand-yellow-lightest:#fbf0c9;--color-brand-yellow-lighter:#f8e39e;--color-brand-yellow-light:#f5d675;--color-brand-yellow:#f2c94c;--color-brand-yellow-dark:#d4a92b;--color-brand-yellow-darker:#a8831b;--color-brand-yellow-darkest:#73570f;--color-brand-green-lightest:#bdf5d3;--color-brand-green-lighter:#96edb7;--color-brand-green-light:#70e69c;--color-brand-green:#4ade80;--color-brand-green-dark:#32c465;--color-brand-green-darker:#1c9646;--color-brand-green-darkest:#0e5425;--color-success:#22c55e;--color-warning:#f59e0b;--color-danger:#ef4444;--color-info:#3b82f6;--color-facility-easy:#22c55e;--color-facility-medium:#f59e0b;--color-facility-hard:#ef4444;--color-cog-conceptual:#8b5cf6;--color-cog-computational:#06b6d4;--color-cog-representation:#f97316;--color-cog-strategy:#ec4899;--color-strand-number:#6366f1;--color-strand-algebra:#8b5cf6;--color-strand-ratio:#06b6d4;--color-strand-geometry:#22c55e;--color-strand-measurement:#f59e0b;--color-strand-statistics:#ef4444;--font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;--font-brand:"Rubik Doodle Shadow",cursive;--font-size-xs:.75rem;--font-size-sm:.875rem;--font-size-base:1rem;--font-size-lg:1.125rem;--font-size-xl:1.25rem;--font-size-2xl:1.5rem;--font-size-3xl:1.875rem;--font-size-4xl:2.25rem;--font-weight-normal:400;--font-weight-medium:500;--font-weight-semibold:600;--font-weight-bold:700;--line-height-tight:1.25;--line-height-normal:1.5;--line-height-relaxed:1.75;--spacing-1:.25rem;--spacing-2:.5rem;--spacing-3:.75rem;--spacing-4:1rem;--spacing-5:1.25rem;--spacing-6:1.5rem;--spacing-8:2rem;--spacing-10:2.5rem;--spacing-12:3rem;--spacing-16:4rem;--radius-sm:.375rem;--radius-md:.5rem;--radius-lg:.75rem;--radius-xl:1rem;--radius-full:9999px;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #00000014,0 2px 4px -1px #0000000a;--shadow-lg:0 10px 15px -3px #00000014,0 4px 6px -2px #0000000a;--shadow-glow:0 0 20px #16a34a26;--transition-fast:.15s ease;--transition-normal:.25s ease;--transition-slow:.35s ease;--sidebar-width:280px;--topnav-height:52px;--header-height:64px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:16px}body{font-family:var(--font-family);font-size:var(--font-size-base);line-height:var(--line-height-normal);color:var(--color-text-primary);background:var(--color-bg-primary);min-height:100vh}.brand-text,.font-brand{font-family:var(--font-brand)}.font-sketch{font-family:Architects Daughter,cursive,sans-serif}.font-body,.font-family{font-family:var(--font-family)}.font-note{font-family:Caveat,cursive,sans-serif}.bg-blueprint{background-color:var(--color-bg-primary);background-image:radial-gradient(var(--color-border-strong)1.5px,transparent 1.5px);background-size:24px 24px}.wired-box{border:2px solid var(--color-text-primary);box-shadow:4px 4px 0px 0px var(--color-text-primary);border-radius:4px 255px 5px 25px/255px 6px 225px 4px}.wired-circle{border-radius:255px 15px 225px/15px 225px 15px 255px}.wired-btn{border:2px solid var(--color-text-primary);background:var(--color-bg-secondary);color:var(--color-text-primary);cursor:pointer;box-shadow:1px 1px 0px 0px var(--color-text-primary);border-radius:15px 225px 15px 255px/255px 15px 225px;text-decoration:none;transition:all .15s}.wired-btn:active{box-shadow:0px 0px 0px 0px var(--color-text-primary);transform:translate(3px,3px)}.wired-btn-primary{background:var(--color-brand-green);color:var(--color-bg-accent)}.wired-btn-secondary{background:var(--color-brand-blue-lightest);color:var(--color-bg-accent)}.wired-btn-sidebar{width:100%}.wired-image-placeholder{border:2px dashed var(--color-text-muted);background:repeating-linear-gradient(45deg,var(--color-bg-tertiary),var(--color-bg-tertiary)10px,var(--color-bg-secondary)10px,var(--color-bg-secondary)20px);border-radius:8px 200px 10px 250px/250px 12px 200px 8px}.highlighter{z-index:1;position:relative}.highlighter:before{content:"";z-index:-1;transform-origin:0;background:#f2c94c99;border-radius:2px 8px 2px 4px/4px 2px 8px;position:absolute;inset:40% -5% 10%;transform:rotate(-1deg)}.highlighter.anim-draw:before{transform:rotate(-1deg)scaleX(0)}.highlighter.anim-draw.in-view:before{animation:.6s ease-out forwards draw-highlight}@keyframes draw-highlight{to{transform:rotate(-1deg)scaleX(1)}}.anim-draw{stroke-dasharray:1000;stroke-dashoffset:1000px}.anim-draw.in-view{animation:1.2s ease-out forwards draw-line}@keyframes draw-line{to{stroke-dashoffset:0}}.anim-fade-up{opacity:0;transform:translateY(15px)}.anim-fade-up.in-view{animation:.8s ease-out forwards fade-up}@keyframes fade-up{to{opacity:1;transform:translateY(0)}}:root{--ease-spring:cubic-bezier(.34,1.56,.64,1);--ease-bounce:cubic-bezier(.68,-.55,.265,1.55)}@keyframes spring-in{0%{opacity:0;transform:scale(.95)translateY(8px)}60%{opacity:1;transform:scale(1.02)translateY(-2px)}to{transform:scale(1)translateY(0)}}@keyframes slinky-wobble{0%,to{transform:translateY(0)rotate(0)}25%{transform:translateY(-2px)rotate(2deg)}75%{transform:translateY(1px)rotate(-1deg)}}@keyframes spring-press{0%{transform:scale(1)}50%{transform:scale(.96)}to{transform:scale(1)}}.anim-spring-in{animation:spring-in .5s var(--ease-spring)both}.anim-slinky-wobble{animation:3s ease-in-out infinite slinky-wobble}.spring-hover{transition:transform .4s var(--ease-spring),box-shadow .3s ease}.spring-hover:hover{transform:translateY(-3px)}.spring-hover:active{animation:spring-press .25s var(--ease-spring)}.app-layout{grid-template-columns:var(--sidebar-width)1fr;grid-template-rows:var(--topnav-height)1fr;min-height:100vh;display:grid}.app-layout.no-sidebar{grid-template-columns:1fr}.topnav{background:var(--color-bg-secondary);border-bottom:1px solid var(--color-border);height:var(--topnav-height);z-index:50;grid-column:1/-1;position:sticky;top:0}.topnav-inner{height:100%;padding:0 var(--spacing-6);align-items:center;gap:var(--spacing-6);display:flex}.topnav-brand{align-items:center;gap:var(--spacing-2);color:var(--color-text-primary);font-weight:var(--font-weight-bold);font-size:var(--font-size-lg);flex-shrink:0;text-decoration:none;display:flex}.topnav-brand-text{white-space:nowrap}.topnav-tabs{gap:var(--spacing-1);margin-left:0;display:flex}.topnav-search{margin-left:var(--spacing-2);flex:auto;min-width:0;max-width:none;position:relative}.topnav-search .wired-search-input{height:36px;font-size:var(--font-size-sm)}.topnav-search .wired-search-icon{font-size:.875rem}.topnav-search-dropdown{top:calc(100% + var(--spacing-2));background:var(--color-bg-secondary);border:2px solid var(--color-border-strong);min-width:min(92vw,520px);box-shadow:var(--shadow-lg);z-index:140;padding:var(--spacing-3);border-radius:8px 32px 10px 30px/30px 10px 24px 8px;position:absolute;left:0;right:0}.topnav-search-section{gap:var(--spacing-2);flex-direction:column;display:flex}.topnav-search-group-list{gap:var(--spacing-3);flex-direction:column;display:flex}.topnav-search-group{gap:var(--spacing-2);flex-direction:column;display:flex}.topnav-search-group-title{font-size:var(--font-size-xs);font-weight:var(--font-weight-semibold);color:var(--color-text-secondary)}.topnav-search-section-title{font-size:var(--font-size-xs);text-transform:uppercase;letter-spacing:.05em;color:var(--color-text-muted);font-weight:var(--font-weight-semibold)}.topnav-search-results{gap:var(--spacing-2);flex-direction:column;display:flex}.topnav-search-result{align-items:flex-start;gap:var(--spacing-3);text-align:left;border:1px solid var(--color-border);background:var(--color-surface);border-radius:var(--radius-md);width:100%;padding:var(--spacing-2)var(--spacing-3);color:var(--color-text-primary);cursor:pointer;transition:all var(--transition-fast);display:flex}.topnav-search-result:hover{background:var(--color-surface-hover);border-color:var(--color-border-strong)}.topnav-search-result-icon{font-size:var(--font-size-lg);margin-top:1px;line-height:1}.topnav-search-result-body{flex-direction:column;gap:2px;min-width:0;display:flex}.topnav-search-result-title{font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold)}.topnav-search-result-title-row{align-items:center;gap:var(--spacing-2);flex-wrap:wrap;display:flex}.topnav-search-result-status{align-self:flex-start}.topnav-search-result-meta{font-size:var(--font-size-xs);color:var(--color-text-muted)}.topnav-search-result-description{font-size:var(--font-size-xs);color:var(--color-text-secondary);white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.topnav-search-empty{font-size:var(--font-size-sm);color:var(--color-text-muted);padding:var(--spacing-2)}.topnav-search-divider{background:var(--color-border);height:1px;margin:var(--spacing-3)0}.topnav-search-suggestions{gap:var(--spacing-2);flex-wrap:wrap;display:flex}.topnav-search-suggestion{border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text-secondary);padding:var(--spacing-1)var(--spacing-3);border-radius:var(--radius-full);cursor:pointer;font-size:var(--font-size-xs);transition:all var(--transition-fast)}.topnav-search-suggestion:hover{background:var(--color-surface-hover);color:var(--color-text-primary);border-color:var(--color-border-strong)}.topnav-search-footer{justify-content:flex-end;display:flex}.topnav-search-view-all{color:var(--color-accent);font-weight:var(--font-weight-semibold);cursor:pointer;background:0 0;border:0;padding:0}.topnav-search-view-all:hover,.topnav-search-view-all:focus-visible{text-decoration:underline}.topnav-tab{padding:var(--spacing-2)var(--spacing-5);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);color:var(--color-text-secondary);border-radius:var(--radius-md);transition:all var(--transition-fast);text-decoration:none;position:relative}.topnav-tab:hover{color:var(--color-text-primary);background:var(--color-surface-hover)}.topnav-tab.active{color:var(--color-accent);background:#4ade801a}.topnav-tab.active:after{content:"";background:var(--color-accent);border-radius:var(--radius-full);width:60%;height:2px;position:absolute;bottom:-10px;left:50%;transform:translate(-50%)}.topnav-right{margin-left:var(--spacing-2);align-items:center;gap:var(--spacing-3);display:flex}.topnav-year-group{align-items:center;gap:var(--spacing-2);padding:0 var(--spacing-2);border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);height:36px;transition:border-color var(--transition-fast),background var(--transition-fast);display:flex}.topnav-year-group.active{border-color:var(--color-accent);background:var(--color-accent-subtle)}.topnav-year-group-label{letter-spacing:.04em;text-transform:uppercase;color:var(--color-text-muted);font-size:.6875rem;font-weight:var(--font-weight-semibold);line-height:1}.topnav-year-group.active .topnav-year-group-label{color:var(--color-accent)}.topnav-year-group-select{min-width:4.5rem;color:var(--color-text-primary);font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);cursor:pointer;background:0 0;border:0;outline:0}.topnav-year-group-select option{background:var(--color-bg-secondary);color:var(--color-text-primary)}.topnav-login-btn{width:auto;font-size:var(--font-size-sm);padding:var(--spacing-1)var(--spacing-4);white-space:nowrap;flex-shrink:0;justify-content:center;align-items:center;display:inline-flex}.topnav-auth-loading{font-size:var(--font-size-xs);color:var(--color-text-muted);white-space:nowrap}.topnav-user-menu{flex-shrink:0;position:relative}.topnav-avatar{border:2px solid var(--color-border-strong);background:var(--color-accent);color:#1a1d27;cursor:pointer;width:34px;height:34px;transition:border-color var(--transition-fast);border-radius:50%;justify-content:center;align-items:center;padding:0;display:flex;overflow:hidden}.topnav-avatar:hover{border-color:var(--color-accent)}.topnav-avatar-img{object-fit:cover;border-radius:50%;width:100%;height:100%}.topnav-avatar-initial{font-size:var(--font-size-sm);font-weight:var(--font-weight-bold);line-height:1}.topnav-user-dropdown{top:calc(100% + var(--spacing-2));background:var(--color-bg-secondary);min-width:220px;padding:var(--spacing-3);z-index:140;position:absolute;right:0}.topnav-user-dropdown-name{font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);color:var(--color-text-primary);padding:var(--spacing-1)var(--spacing-2);white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.topnav-user-dropdown-email{font-size:var(--font-size-xs);color:var(--color-text-muted);padding:0 var(--spacing-2)var(--spacing-2);white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.topnav-user-dropdown-divider{background:var(--color-border);height:1px;margin:var(--spacing-1)0}.topnav-user-dropdown-item{text-align:left;width:100%;padding:var(--spacing-2);border-radius:var(--radius-sm);color:var(--color-text-secondary);font-size:var(--font-size-sm);cursor:pointer;transition:all var(--transition-fast);background:0 0;border:none;font-family:inherit;display:block}.topnav-user-dropdown-item:hover{background:var(--color-surface-hover);color:var(--color-text-primary)}.topnav-toggle-btn{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);cursor:pointer;width:36px;height:36px;transition:all var(--transition-fast);flex-shrink:0;justify-content:center;align-items:center;padding:6px;display:none}.topnav-toggle-btn:hover{background:var(--color-surface-hover);border-color:var(--color-border-strong)}.topnav-toggle-btn.controls{color:var(--color-accent-light)}.topnav-toggle-btn.menu{color:var(--color-text-secondary)}.topnav-toggle-icon{width:18px;height:18px;color:inherit;transition:all var(--transition-fast)}.mobile-drawer-overlay{z-index:90;opacity:0;transition:opacity var(--transition-normal);pointer-events:none;background:#00000080;display:none;position:fixed;inset:0}.mobile-drawer-overlay.visible{opacity:1;pointer-events:auto}.mobile-drawer{top:var(--topnav-height);background:var(--color-bg-secondary);border:1px solid var(--color-border);z-index:100;width:min(92vw,360px);transition:transform var(--transition-normal);flex-direction:column;align-items:stretch;display:none;position:fixed;bottom:0;overflow-y:auto}.mobile-menu-drawer{border-right:1px solid var(--color-border);left:0;transform:translate(-100%)}.mobile-controls-drawer{border-left:1px solid var(--color-border);right:0;transform:translate(100%)}.mobile-drawer.open{box-shadow:var(--shadow-lg);transform:translate(0)}.mobile-drawer-close{margin-left:auto;margin-right:var(--spacing-3);margin-top:var(--spacing-3);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);cursor:pointer;width:32px;height:32px;color:var(--color-text-secondary);z-index:2;transition:all var(--transition-fast);justify-content:center;align-items:center;font-size:1rem;display:flex;position:sticky;top:0}.mobile-drawer-close:hover{background:var(--color-surface-hover);color:var(--color-text-primary)}.main-content{padding:var(--spacing-8);background:var(--color-bg-primary);max-height:calc(100vh - var(--topnav-height));max-height:calc(100dvh - var(--topnav-height));overflow-y:auto}.sidebar{background:var(--color-bg-secondary);border-right:1px solid var(--color-border);height:calc(100vh - var(--topnav-height));height:calc(100dvh - var(--topnav-height));top:var(--topnav-height);flex-direction:column;display:flex;position:sticky;overflow-y:auto}.sidebar-nav{padding:var(--spacing-4);flex:1;overflow-y:auto}.dashboard-sidebar-copy,.dashboard-sidebar-section-copy{color:var(--color-text-secondary);font-size:var(--font-size-sm);margin:0;line-height:1.5}.dashboard-sidebar-link-list{gap:var(--spacing-2);flex-direction:column;display:flex}.dashboard-sidebar-link{align-items:center;gap:var(--spacing-3);padding:var(--spacing-3);text-align:left;justify-content:flex-start;width:100%;display:flex}.dashboard-sidebar-link-icon{flex-shrink:0;justify-content:center;align-items:center;width:1.5rem;height:1.5rem;display:inline-flex}.mobile-menu-content{padding:var(--spacing-4)}.mobile-menu-section{margin-bottom:var(--spacing-5)}.mobile-menu-subsection{gap:var(--spacing-2);margin-top:var(--spacing-3);flex-direction:column;display:flex}.mobile-menu-subsection-title{font-size:var(--font-size-xs);font-weight:var(--font-weight-semibold);color:var(--color-text-muted);padding:0 var(--spacing-2)}.mobile-menu-section-title{font-size:var(--font-size-xs);font-weight:var(--font-weight-semibold);color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em;padding:var(--spacing-1)var(--spacing-2);margin-bottom:var(--spacing-2)}.mobile-menu-link{padding:var(--spacing-2)var(--spacing-3);border-radius:var(--radius-md);color:var(--color-text-secondary);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);border:1px solid var(--color-border);background:var(--color-surface);text-decoration:none;display:block}.mobile-menu-link:hover{color:var(--color-text-primary);background:var(--color-surface-hover)}.mobile-menu-link.active{color:#fff;background:var(--color-accent);border-color:#0000}.mobile-menu-link-icon{margin-right:var(--spacing-2)}.mobile-controls-content{padding:0 var(--spacing-1)var(--spacing-4)}.mobile-controls-nav{padding-bottom:var(--spacing-1)}.mobile-controls-empty{padding:var(--spacing-4);color:var(--color-text-muted);font-size:var(--font-size-sm)}.nav-section{margin-bottom:var(--spacing-6)}.nav-section-title{font-size:var(--font-size-xs);font-weight:var(--font-weight-semibold);color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em;padding:var(--spacing-2)var(--spacing-3);margin-bottom:var(--spacing-2)}.page-header{margin-bottom:var(--spacing-8)}.page-header-row{justify-content:space-between;align-items:flex-start;gap:var(--spacing-4);display:flex}.page-header-main{min-width:0}.page-header-actions{gap:var(--spacing-4);flex-wrap:wrap;display:flex}.page-title{font-size:var(--font-size-3xl);font-weight:var(--font-weight-bold);color:var(--color-text-primary);margin-bottom:var(--spacing-2)}.page-description{font-size:var(--font-size-base);color:var(--color-text-secondary)}.page-back-link-wrap{margin-bottom:var(--spacing-4)}.page-back-link{color:var(--color-text-muted);font-size:var(--font-size-sm);border-radius:var(--radius-sm);transition:color var(--transition-fast),background var(--transition-fast);text-decoration:none}.page-back-link:hover{color:var(--color-text-primary);text-decoration:underline}.page-back-link:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}.card{background:var(--color-bg-secondary);border:1px solid var(--color-border);padding:var(--spacing-6);transition:all var(--transition-fast)}.card:hover{border-color:var(--color-border-strong)}.card-header{margin-bottom:var(--spacing-4);justify-content:space-between;align-items:center;display:flex}.card-title{font-size:var(--font-size-lg);font-weight:var(--font-weight-semibold);color:var(--color-text-primary)}.card-subtitle{font-size:var(--font-size-sm);color:var(--color-text-muted)}.tool-card{padding:var(--spacing-6);color:inherit;background:var(--color-bg-secondary);transition:transform .4s var(--ease-spring),box-shadow .3s ease;cursor:pointer;flex-direction:column;text-decoration:none;display:flex}.tool-card:hover{transform:translateY(-4px)}.stats-grid{gap:var(--spacing-6);margin-bottom:var(--spacing-8);grid-template-columns:repeat(auto-fit,minmax(240px,1fr));display:grid}.stat-card{background:linear-gradient(135deg,var(--color-bg-secondary),var(--color-bg-tertiary));border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-6);position:relative;overflow:hidden}.stat-card:before{content:"";background:var(--stat-accent,var(--color-accent));height:3px;position:absolute;top:0;left:0;right:0}.stat-label{font-size:var(--font-size-sm);color:var(--color-text-muted);margin-bottom:var(--spacing-2);text-transform:uppercase;letter-spacing:.03em}.stat-value{font-size:var(--font-size-3xl);font-weight:var(--font-weight-bold);color:var(--color-text-primary);line-height:var(--line-height-tight)}.stat-context{font-size:var(--font-size-sm);color:var(--color-text-secondary);margin-top:var(--spacing-2)}.insight-card{padding:var(--spacing-4);background:var(--color-surface);border-radius:var(--radius-md)}.insight-value{font-size:var(--font-size-xl);margin-bottom:var(--spacing-2)}.insight-title{font-weight:var(--font-weight-medium)}.insight-meta{font-size:var(--font-size-sm);color:var(--color-text-muted)}.spotlight-card{border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--spacing-4);background:var(--color-surface)}.spotlight-card-header{justify-content:space-between;align-items:center;gap:var(--spacing-3);margin-bottom:var(--spacing-2);display:flex}.spotlight-stem{margin:0 0 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12px}.filter-chip:hover{background:var(--color-surface-hover);color:var(--color-text-primary);border-color:var(--color-accent)}.filter-chip.active{background:var(--color-accent);color:var(--color-bg-primary);border-color:var(--color-accent-dark)}.filter-chip.filter-chip-easy.active{color:var(--color-success);background:#22c55e26;border-color:#22c55e73}.filter-chip.filter-chip-medium.active{color:var(--color-warning);background:#f59e0b26;border-color:#f59e0b73}.filter-chip.filter-chip-hard.active{color:var(--color-danger);background:#ef444426;border-color:#ef444473}.filter-chip.filter-chip-always.active{color:var(--color-success);background:#22c55e26;border-color:#22c55e73}.filter-chip.filter-chip-often.active{color:var(--color-warning);background:#f59e0b26;border-color:#f59e0b73}.filter-chip.filter-chip-sometimes.active{color:#94a3b8;background:#94a3b833;border-color:#94a3b873}.chart-mode-controls{margin-bottom:var(--spacing-2);justify-content:flex-end;display:flex}.text-center{text-align:center}.text-right{text-align:right}.text-muted{color:var(--color-text-muted)}.text-success{color:var(--color-success)}.text-warning{color:var(--color-warning)}.text-danger{color:var(--color-danger)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-2{gap:var(--spacing-2)}.gap-4{gap:var(--spacing-4)}.gap-6{gap:var(--spacing-6)}.grid-2{gap:var(--spacing-6);grid-template-columns:repeat(2,1fr);display:grid}.grid-3{gap:var(--spacing-6);grid-template-columns:repeat(3,1fr);display:grid}.difficulty-quadrant-grid{gap:var(--spacing-4);grid-template-columns:repeat(4,minmax(0,1fr));display:grid}.paper-analysis-split{gap:var(--spacing-6);grid-template-columns:minmax(0,2fr) minmax(0,1fr);display:grid}.mt-4{margin-top:var(--spacing-4)}.mt-8{margin-top:var(--spacing-8)}.mb-4{margin-bottom:var(--spacing-4)}.mb-2{margin-bottom:var(--spacing-2)}.mb-8{margin-bottom:var(--spacing-8)}@media (max-width:1024px){.app-layout{grid-template-columns:1fr}.topnav-tabs{display:none}.topnav-toggle-btn{display:flex}.topnav-inner{padding:0 var(--spacing-4);gap:var(--spacing-3)}.topnav-search{margin-left:var(--spacing-1);min-width:0;max-width:none}.topnav-search .wired-search-input{height:34px}.topnav-search-dropdown{min-width:0}.topnav-search-footer{justify-content:flex-start}.topnav-right{margin-left:var(--spacing-1);gap:var(--spacing-2)}.topnav-year-group{padding:0 var(--spacing-2)}.topnav-year-group-label{display:none}.topnav-year-group-select{min-width:4rem}.sidebar{display:none}.mobile-drawer{display:flex}.mobile-drawer-overlay{display:block}.grid-2,.grid-3,.difficulty-quadrant-grid,.paper-analysis-split{grid-template-columns:1fr}.difficulty-quadrant-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:768px){.main-content{padding:var(--spacing-4)}.page-title{font-size:var(--font-size-2xl)}.page-description{font-size:var(--font-size-sm)}.page-header-row{flex-direction:column;align-items:stretch}.page-header-actions{justify-content:flex-start;width:100%}.stats-grid{gap:var(--spacing-4);grid-template-columns:repeat(2,1fr)}.stat-value{font-size:var(--font-size-2xl)}.chart-container{height:300px}.card{padding:var(--spacing-4)}.card-header{align-items:flex-start;gap:var(--spacing-2);flex-direction:column}.data-table th,.data-table td{padding:var(--spacing-2)var(--spacing-3)}}@media (max-width:480px){.main-content{padding:var(--spacing-3)}.page-header{margin-bottom:var(--spacing-4)}.page-title{font-size:var(--font-size-xl)}.stats-grid{grid-template-columns:1fr}.stat-card{padding:var(--spacing-4)}.stat-value{font-size:var(--font-size-xl)}.chart-container{height:250px}.card{padding:var(--spacing-3)}.topnav-brand-text{font-size:var(--font-size-base)}.topnav-search .wired-search-input{height:32px;font-size:var(--font-size-xs);padding:0 1.75rem 0 .625rem}.topnav-search-result{gap:var(--spacing-2);padding:var(--spacing-2)}.topnav-search .wired-search-icon{font-size:.75rem;left:.5rem}.topnav-year-group{height:32px;padding:0 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