@layer components{.section-header::before{content:'▶';font-size:0.75rem;transition:transform 0.2s}.section-header.is-expanded::before{content:'▼'}.prose-section{max-height:none;transition:max-height 0.3s ease}.prose-section.is-collapsed{max-height:3rem;overflow:hidden}}@layer reset,tokens,base,components,utilities,overrides;@import url('vendor/pico.min.css') layer(reset);@import url('vendor/fonts.css') layer(tokens);@layer tokens{:root{--space-xs:0.25rem;--space-sm:0.5rem;--space-md:1rem;--space-lg:1.5rem;--space-xl:2rem;--space-2xl:3rem;--space-3xl:4rem}:root{--ease-out-cubic:cubic-bezier(0.33,1,0.68,1);--ease-in-out-cubic:cubic-bezier(0.65,0,0.35,1);--ease-out-expo:cubic-bezier(0.16,1,0.3,1);--ease-spring:cubic-bezier(0.34,1.56,0.64,1);--ease-out-back:cubic-bezier(0.34,1.56,0.64,1);--duration-instant:100ms;--duration-fast:150ms;--duration-normal:250ms;--duration-slow:400ms;--motion-reduce:0}:root{--density-gap:0.5rem;--density-padding:1rem;--density-font-scale:1;--density-line-height:1.7;--density-card-compact:0.5rem;--density-card-standard:1rem;--density-card-comfortable:1.5rem}[data-density="compact"]{--density-gap:0.25rem;--density-padding:0.75rem;--density-font-scale:0.9375;--density-line-height:1.6;--density-card-compact:0.375rem;--density-card-standard:0.75rem;--density-card-comfortable:1rem}[data-density="comfortable"]{--density-gap:0.75rem;--density-padding:1.5rem;--density-font-scale:1.0625;--density-line-height:1.8;--density-card-compact:0.75rem;--density-card-standard:1.25rem;--density-card-comfortable:2rem}:root{--font-body:'Manrope',system-ui,-apple-system,'Segoe 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.ring-label{font-size:0.7rem;font-weight:600;color:var(--color-text-muted);font-variant-numeric:tabular-nums}.pillar-rail{position:sticky;top:1rem;display:flex;flex-direction:column;gap:1rem}.rail-card{padding:1rem}.rail-title{font-size:0.8125rem;font-weight:700;color:var(--color-text);margin-bottom:0.75rem;display:flex;align-items:center;gap:0.5rem}.rail-title .rail-count{color:var(--color-text-muted);font-weight:500}.rail-item{display:flex;align-items:center;gap:0.75rem;padding:0.5rem 0;border-bottom:1px solid var(--color-border);text-decoration:none}.rail-item:last-child{border-bottom:none}.rail-item:hover .rail-item-title{color:var(--color-accent)}.rail-item-title{font-size:0.8125rem;font-weight:600;color:var(--color-text);line-height:1.35}.rail-item-meta{font-size:0.6875rem;color:var(--color-text-muted)}.diagnostic-cta{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:0.875rem 1.25rem;border-radius:0.75rem;background:color-mix(in srgb,var(--color-accent) 6%,var(--color-surface));border:1px solid color-mix(in srgb,var(--color-accent) 18%,transparent)}.diagnostic-cta p{font-size:0.8125rem;color:var(--color-text-secondary);margin:0}.diagnostic-cta strong{color:var(--color-text)}.mobile-tabbar{display:none}@media (max-width:767px){.mobile-tabbar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:60;background:var(--color-surface);border-top:1px solid var(--color-border);box-shadow:0 -2px 12px rgba(0,0,0,0.08)}.mobile-tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;gap:0.125rem;padding:0.5rem 0 0.625rem;font-size:0.6875rem;color:var(--color-text-muted);text-decoration:none;position:relative}.mobile-tabbar a.is-active{color:var(--color-accent);font-weight:600}.mobile-tabbar .tab-badge{position:absolute;top:0.2rem;right:calc(50% - 1.6rem);min-width:1rem;height:1rem;padding:0 0.25rem;border-radius:9999px;background:var(--color-accent);color:#fff;font-size:0.625rem;line-height:1rem;text-align:center;font-weight:700}.mobile-tabbar .tab-badge.is-hot{background:#dc2626}body{padding-bottom:3.5rem}}@media (prefers-reduced-motion:reduce){.progress-ring .ring-fill{transition:none}}.week-bar{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;gap:0.25rem;height:100%}.week-bar-fill{width:100%;max-width:1.5rem;border-radius:0.25rem 0.25rem 0 0;background:var(--color-border);transition:height 0.3s var(--ease-out-cubic)}.week-bar-fill.is-active{background:var(--color-accent)}.week-bar-day{font-size:0.625rem;color:var(--color-text-muted)}.study-streak-card.is-live span[aria-hidden="true"]{animation:streak-flicker 1.6s ease-in-out infinite}@keyframes streak-flicker{0%,100%{transform:scale(1)}50%{transform:scale(1.15)}}@media (prefers-reduced-motion:reduce){.study-streak-card.is-live span[aria-hidden="true"]{animation:none}}body{background-color:var(--color-bg);color:var(--color-text)}@media (prefers-color-scheme:dark){:root{--color-text:#f4f4f5;--color-text-secondary:#a1a1aa;--color-text-muted:#9ca3af;--color-bg:#121212;--color-surface:#1a1a1a;--color-surface-hover:#242424;--color-border:#2a2a2a;--color-accent:#60a5fa;--color-accent-hover:#3b82f6;--color-focus:#60a5fa;--color-aml:#f97316;--color-markets:#34d399;--color-data-engineering:#818cf8;--color-input-bg:#1a1a1a;--color-input-text:#f5f5f5;--color-input-placeholder:#525252;--color-input-focus-border:#3b82f6}}.dark{--color-text:#f4f4f5;--color-text-secondary:#a1a1aa;--color-text-muted:#9ca3af;--color-bg:#121212;--color-surface:#1a1a1a;--color-surface-hover:#242424;--color-border:#2a2a2a;--color-accent:#60a5fa;--color-accent-hover:#3b82f6;--color-focus:#60a5fa;--color-aml:#f97316;--color-markets:#34d399;--color-data-engineering:#818cf8;--color-input-bg:#1a1a1a;--color-input-text:#f5f5f5;--color-input-placeholder:#525252;--color-input-focus-border:#3b82f6}.light{--color-text:#1a1a2e;--color-text-secondary:#52525b;--color-text-muted:#6b7280;--color-bg:#ffffff;--color-surface:#f8f8fa;--color-surface-hover:#f0f0f4;--color-border:#e4e4e7;--color-accent:#4f46e5;--color-accent-hover:#6366f1;--color-focus:#4f46e5;--color-aml:#ea580c;--color-markets:#16a34a;--color-data-engineering:#6366f1;--color-input-bg:#ffffff;--color-input-text:#1a1a2e;--color-input-placeholder:#9ca3af;--color-input-focus-border:#4f46e5}input,textarea,select{background-color:var(--color-input-bg) 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1.5rem;font-size:1rem}.btn-outline{background:transparent;color:var(--color-text);border-color:var(--color-border)}.btn-outline:hover{background:var(--color-surface);border-color:var(--color-accent);color:var(--color-accent)}.btn-icon-only{padding:0.4rem;min-width:2rem;min-height:2rem;justify-content:center}.btn-danger{background:transparent;color:#ef4444;border-color:transparent}.btn-danger:hover{background:color-mix(in srgb,#ef4444 10%,transparent);border-color:#ef4444}.btn-success{background:#22c55e;color:#fff;border-color:#22c55e}.btn-success:hover{opacity:0.9}.btn-warning{background:#d97706;color:#fff;border-color:#d97706}.btn-warning:hover{opacity:0.9}.btn:disabled,.btn.disabled{opacity:0.4;cursor:not-allowed;pointer-events:none}.btn:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px}.aspect-w-16{aspect-ratio:16 / 9}.aspect-w-4{aspect-ratio:4 / 3}.aspect-w-1{aspect-ratio:1 / 1}.aspect-w-21{aspect-ratio:21 / 9}.card{background:var(--color-surface);border:1px 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ease}.concept-cloud-tag:hover{background:color-mix(in srgb,var(--color-accent) 22%,transparent)}.badge-knowledge{font-size:0.75rem;font-weight:600;color:#d97706}.feynman-cta-card{border-left:4px solid #d97706;background:color-mix(in srgb,#d97706 4%,transparent)}.card-accent-top{border-top:3px solid var(--card-color,var(--color-accent))}.card-accent-left{border-left:3px solid var(--card-color,var(--color-accent))}.card-accent-label{color:var(--card-color,var(--color-accent));font-size:0.75rem;font-weight:600}#theme-toggle{display:inline-flex;align-items:center;justify-content:center;width:2.25rem;height:2.25rem;padding:0;border:1px solid var(--color-border);border-radius:999px;background:var(--color-surface);color:var(--color-text-secondary);cursor:pointer;transition:all 0.2s ease}#theme-toggle:hover{border-color:var(--color-accent);color:var(--color-accent);background:var(--color-surface-hover)}:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px;border-radius:4px}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px}.keyboard-nav:focus-visible{outline-width:3px}@media (prefers-reduced-motion:reduce){.transition,.transition-all,.transition-colors,.transition-opacity,.transition-shadow,.transition-transform{transition:none !important}}}@layer base{body{font-family:var(--font-body);font-size:var(--text-base);line-height:var(--leading-relaxed);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);line-height:var(--leading-tight);letter-spacing:-0.01em;font-optical-sizing:auto}nav{border-bottom:1px solid var(--color-border);margin-bottom:2rem;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:0.5rem}nav ul,nav ol{margin:0;padding:0;list-style:none;display:flex;align-items:center;gap:0.25rem;flex-wrap:wrap}nav ul li,nav ol li{list-style:none}nav ul li a{display:block;padding:0.35rem 0.5rem;font-size:0.9rem;text-decoration:none;color:var(--color-text-secondary);border-radius:6px;transition:color 0.15s ease,background 0.15s ease}nav ul li a:hover{color:var(--color-text);background:var(--color-surface-hover)}footer hr{margin-bottom:1rem}.ghost-card ul,.ghost-card ol,.ghost-card details ul,details.ghost-card ul{list-style:none;margin:0;padding:0}ul.lineage-sources{list-style:none;margin:0;padding:0}ul.legend-list,ul.kb-concept-list{list-style:none;margin:0;padding:0}section.mt-12 ul.space-y-2{list-style:none;margin:0;padding:0}.prose-body{max-width:66ch;font-size:var(--text-base);line-height:var(--leading-relaxed);margin:0 auto}.prose-body p{margin-bottom:1.25rem}.prose-body h2{font-size:var(--text-xl);font-weight:700;margin:2.5rem 0 0.75rem;letter-spacing:-0.02em}.prose-body h3{font-size:var(--text-lg);font-weight:600;margin:1.75rem 0 0.5rem;letter-spacing:-0.01em}.prose-body h4{font-size:var(--text-base);font-weight:600;margin:1.5rem 0 0.5rem}.prose-body ul,.prose-body ol{margin-bottom:1.25rem;padding-left:1.5rem}.prose-body li{margin-bottom:0.5rem}.prose-body li:last-child{margin-bottom:0}.prose-body blockquote{border-left:3px solid var(--color-accent);padding:0.75rem 1rem;margin:1.5rem 0;border-radius:0 6px 6px 0;background:color-mix(in srgb,var(--color-accent) 4%,transparent);color:var(--color-text-secondary)}.prose-body blockquote p:last-child{margin-bottom:0}.prose-body code{font-size:0.9375rem;background:var(--color-surface);padding:0.125rem 0.375rem;border-radius:4px;font-weight:500}.prose-body pre{font-size:0.875rem;line-height:1.5;padding:1rem;border-radius:8px;background:var(--color-surface);border:1px solid var(--color-border);overflow-x:auto;margin-bottom:1.5rem}.prose-body pre code{background:none;padding:0;font-weight:400}.prose-body hr{border:none;height:1px;background:var(--color-border);margin:2rem 0}.prose-body img{border-radius:8px;margin:1.5rem auto;display:block}.prose-body a{color:var(--color-accent);text-decoration:underline;text-underline-offset:2px;transition:opacity 0.15s ease}.prose-body a:hover{opacity:0.8}.prose-body table{width:100%;border-collapse:collapse;margin:1.5rem 0;font-size:0.9375rem}.prose-body th,.prose-body td{padding:0.625rem 0.75rem;border:1px solid var(--color-border);text-align:left}.prose-body th{background:var(--color-surface);font-weight:600}.prose-body>*:first-child{margin-top:0}.prose-body>*:last-child{margin-bottom:0}#reading-progress{position:fixed;top:0;left:0;height:3px;background:var(--color-accent);z-index:9999;width:0%;transition:width 0.1s linear}#scroll-top{position:fixed;bottom:2rem;right:2rem;width:40px;height:40px;border-radius:50%;background:var(--color-surface);border:1px solid var(--color-border);color:var(--color-text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;transform:translateY(10px);transition:opacity 0.3s ease,transform 0.3s ease;z-index:999;pointer-events:none}#scroll-top.visible{opacity:1;transform:translateY(0);pointer-events:auto}#scroll-top:hover{background:var(--color-accent);color:#fff;border-color:var(--color-accent)}}@layer components{.feynman-stages{display:flex;align-items:center;gap:0;margin-bottom:1.5rem;overflow-x:auto;padding-bottom:0.25rem}.feynman-stage-dot{display:flex;flex-direction:column;align-items:center;gap:0.25rem;min-width:60px;position:relative;cursor:pointer}.feynman-stage-dot .dot{width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:0.75rem;font-weight:700;border:2px solid var(--color-border);background:var(--color-surface);color:var(--color-text-muted);transition:all 0.3s ease}.feynman-stage-dot.completed .dot{background:var(--color-accent);border-color:var(--color-accent);color:#fff}.feynman-stage-dot.active .dot{border-color:var(--color-accent);color:var(--color-accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--color-accent) 25%,transparent)}.feynman-stage-dot .stage-label{font-size:0.625rem;color:var(--color-text-muted);white-space:nowrap;text-align:center}.feynman-stage-dot.completed .stage-label{color:var(--color-accent)}.feynman-stage-connector{flex:1;height:2px;background:var(--color-border);min-width:16px}.feynman-stage-connector.completed{background:var(--color-accent)}.feynman-card{border-radius:12px;transition:box-shadow 0.2s ease,transform 0.1s ease}.feynman-card:hover{box-shadow:0 8px 24px -8px rgba(0,0,0,0.15);transform:translateY(-1px)}.feynman-card .quote-eli5{font-size:var(--text-lg);line-height:1.6;padding:1.25rem 1.5rem;border-left:4px solid #d97706;background:var(--feynman-eli5-bg);border-radius:0 8px 8px 0;margin-bottom:1rem;position:relative}.feynman-card .quote-eli5::before{content:'\201C';font-size:3rem;line-height:1;position:absolute;top:-0.25rem;left:0.5rem;color:color-mix(in srgb,#d97706 30%,transparent);font-family:Georgia,serif}.feynman-layer{border-radius:8px;transition:all 0.2s ease}.feynman-layer summary{padding:0.5rem 0.75rem;border-radius:6px;transition:background 0.15s ease;user-select:none;-webkit-user-select:none}.feynman-layer summary:hover{background:color-mix(in srgb,var(--color-accent) 6%,transparent)}.feynman-layer summary::-webkit-details-marker{display:none}.feynman-layer summary::marker{display:none}.feynman-layer[open]>summary svg{transform:rotate(90deg)}.next-stage-btn{display:inline-flex;align-items:center;gap:0.5rem;padding:0.5rem 1rem;border-radius:999px;font-size:0.8125rem;font-weight:600;background:color-mix(in srgb,var(--color-accent) 12%,transparent);color:var(--color-accent);border:1px solid color-mix(in srgb,var(--color-accent) 25%,transparent);cursor:pointer;transition:all 0.2s ease;text-decoration:none}.next-stage-btn:hover{background:var(--color-accent);color:#fff}.feynman-timeline{position:relative;padding-left:2rem}.feynman-timeline::before{content:'';position:absolute;left:0.75rem;top:0;bottom:0;width:2px;background:var(--color-border)}.feynman-timeline-item{position:relative;padding-bottom:1.5rem}.feynman-timeline-item::before{content:'';position:absolute;left:-1.625rem;top:0.25rem;width:12px;height:12px;border-radius:50%;background:var(--color-surface);border:2px solid var(--color-border)}.feynman-timeline-item.completed::before{background:var(--color-accent);border-color:var(--color-accent)}.feynman-timeline-item.active::before{border-color:var(--color-accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--color-accent) 25%,transparent)}.feynman-timeline-item.locked{opacity:0.4;pointer-events:none}.mode-toggle{display:inline-flex;border:1px solid var(--color-border);border-radius:999px;overflow:hidden}.mode-toggle button{padding:0.375rem 0.875rem;font-size:0.75rem;font-weight:600;border:none;background:transparent;color:var(--color-text-muted);cursor:pointer;transition:all 0.2s ease;font-family:inherit}.mode-toggle button.active{background:var(--color-accent);color:#fff}.mode-toggle button:not(.active):hover{color:var(--color-text)}.mode-beginner .mode-intermediate-only,.mode-beginner .mode-expert-only,.mode-intermediate .mode-expert-only{display:none !important}.mode-expert .mode-beginner-only{display:none !important}.difficulty-badge{display:inline-flex;align-items:center;gap:0.375rem;padding:0.25rem 0.75rem;border-radius:999px;font-size:0.75rem;font-weight:600}.difficulty-badge.beginner{background:color-mix(in srgb,#22c55e 12%,transparent);color:#22c55e}.difficulty-badge.intermediate{background:color-mix(in srgb,#d97706 12%,transparent);color:#d97706}.difficulty-badge.advanced{background:color-mix(in srgb,#ef4444 12%,transparent);color:#ef4444}.mastery-bar{height:6px;border-radius:999px;background:var(--color-border);overflow:hidden}.mastery-bar-fill{height:100%;border-radius:999px;transition:width 0.5s ease}.mastery-bar-fill.low{background:#ef4444}.mastery-bar-fill.medium{background:#d97706}.mastery-bar-fill.high{background:#22c55e}[data-tooltip]{position:relative}[data-tooltip]::after{content:attr(data-tooltip);position:absolute;bottom:calc(100%+6px);left:50%;transform:translateX(-50%) translateY(4px);padding:0.375rem 0.75rem;border-radius:6px;font-size:0.75rem;font-weight:500;white-space:nowrap;background:var(--color-text);color:var(--color-bg);opacity:0;pointer-events:none;transition:all 0.15s ease;z-index:100}[data-tooltip]:hover::after{opacity:1;transform:translateX(-50%) translateY(0)}.hero-section{padding:2.5rem 0;text-align:center}.hero-section h1{font-size:var(--text-4xl);font-weight:800;letter-spacing:-0.03em;max-width:720px;margin:0 auto}.hero-section .hero-subtitle{font-size:var(--text-lg);color:var(--color-text-secondary);max-width:520px;margin:0.75rem auto 1.5rem}.hero-cta{display:inline-flex;align-items:center;gap:0.5rem;padding:0.75rem 1.5rem;border-radius:999px;font-size:0.9375rem;font-weight:700;background:var(--color-accent);color:#fff;text-decoration:none;transition:all 0.2s ease}.hero-cta:hover{opacity:0.9;transform:translateY(-1px)}.hero-actions{display:flex;align-items:center;justify-content:center;gap:0.75rem;flex-wrap:wrap;margin-top:0.25rem}.hero-cta-ghost{display:inline-flex;align-items:center;gap:0.5rem;padding:0.75rem 1.5rem;border-radius:999px;font-size:0.9375rem;font-weight:600;background:transparent;color:var(--color-text-secondary);border:1px solid var(--color-border);text-decoration:none;transition:all 0.2s ease}.hero-cta-ghost:hover{border-color:var(--color-accent);color:var(--color-accent);transform:translateY(-1px)}.how-it-works{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem;margin:2rem 0}.hiw-step{text-align:center;padding:1.5rem;border-radius:12px;background:var(--color-surface);border:1px solid var(--color-border)}.hiw-step .step-number{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;background:var(--color-accent);color:#fff;font-size:1rem;font-weight:700;margin-bottom:0.75rem}.hiw-step h3{font-size:var(--text-sm);font-weight:700;margin-bottom:0.375rem}.hiw-step p{font-size:var(--text-xs);color:var(--color-text-secondary);line-height:1.5}.pillar-card{border-radius:12px;transition:all 0.25s ease}.pillar-card:hover{transform:translateY(-3px);box-shadow:0 8px 30px rgba(0,0,0,0.12)}.pillar-card .pillar-name{font-size:var(--text-base);font-weight:700}.pillar-card .pillar-desc{font-size:var(--text-xs);color:var(--color-text-secondary);line-height:1.5}.pillar-card .pillar-stat{font-size:var(--text-xs);color:var(--color-text-muted)}.home-hero{text-align:center;padding:4.5rem 1rem 3.5rem;max-width:860px;margin:0 auto}.hero-eyebrow{display:inline-flex;align-items:center;gap:0.5rem;font-size:0.75rem;font-weight:600;letter-spacing:0.18em;text-transform:uppercase;color:var(--color-text-muted);margin-bottom:1.5rem}.hero-eyebrow::before,.hero-eyebrow::after{content:'';width:2.5rem;height:1px;background:var(--color-border)}.hero-title{font-family:var(--font-display);font-weight:600;font-size:clamp(2.25rem,6vw,4rem);line-height:1.06;letter-spacing:-0.02em;margin:0 auto 1.5rem;max-width:22ch}.hero-accent{font-style:italic;font-weight:500;color:var(--color-accent)}.hero-sub{font-size:var(--text-lg);color:var(--color-text-secondary);line-height:1.6;max-width:34rem;margin:0 auto 2rem}.hide-sm{display:inline}@media (max-width:600px){.hide-sm{display:none}.home-hero{padding:3rem 0.5rem 2.5rem}}.home-section{margin:3.5rem 0}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:1rem;margin-bottom:1.25rem}.section-label{font-size:0.6875rem;font-weight:700;letter-spacing:0.16em;text-transform:uppercase;color:var(--color-text-muted);margin-bottom:0.35rem}.section-title{font-family:var(--font-display);font-size:clamp(1.5rem,3vw,2rem);font-weight:600;letter-spacing:-0.01em}.section-link{font-size:0.8125rem;font-weight:600;color:var(--color-accent);text-decoration:none;white-space:nowrap}.section-link:hover{text-decoration:underline}.pillar-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.25rem}.business-card{position:relative;display:flex;flex-direction:column;gap:0.75rem;padding:1.75rem 1.5rem 1.25rem;border-radius:16px;background:var(--color-surface);border:1px solid var(--color-border);border-top:3px solid var(--card-color,var(--color-accent));text-decoration:none;color:var(--color-text);overflow:hidden;transition:all 0.25s ease}.business-card:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(0,0,0,0.1);border-color:var(--card-color,var(--color-accent))}.bc-index{position:absolute;top:0.9rem;right:1.1rem;font-family:var(--font-display);font-style:italic;font-size:2.25rem;font-weight:500;color:var(--card-color,var(--color-accent));opacity:0.28;line-height:1}.bc-icon{font-size:1.6rem;line-height:1}.bc-title{font-family:var(--font-display);font-size:1.375rem;font-weight:600;letter-spacing:-0.01em;color:var(--color-text)}.bc-desc{font-size:0.8125rem;color:var(--color-text-secondary);line-height:1.55}.bc-picks{list-style:none;margin:0.5rem 0 0;padding:0;display:flex;flex-direction:column;gap:0.4rem;flex:1}.bc-pick{font-size:0.8125rem;color:var(--color-text-secondary);padding-left:1rem;position:relative;line-height:1.45;transition:color 0.15s ease}.bc-pick::before{content:'';position:absolute;left:0;top:0.55em;width:6px;height:6px;border-radius:50%;background:var(--card-color,var(--color-accent));opacity:0.7}.business-card:hover .bc-pick{color:var(--color-text)}.bc-foot{display:flex;align-items:center;justify-content:space-between;gap:0.75rem;margin-top:0.75rem;padding-top:0.75rem;border-top:1px dashed var(--color-border);font-size:0.75rem;font-weight:600;color:var(--color-text-muted)}.bc-go{color:var(--card-color,var(--color-accent));white-space:nowrap}.bc-go::after{content:' \2192';transition:transform 0.2s ease;display:inline-block}.business-card:hover .bc-go::after{transform:translateX(3px)}.home-how{text-align:center}.home-how .section-label{margin-bottom:1.5rem}.hiw-step-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.25rem;text-align:left}.explainer-visual{margin:1.25rem 0 1.5rem;border:1px solid var(--color-border);border-radius:12px;overflow:hidden}.explainer-visual svg{display:block}.news-hero{padding-bottom:2.5rem}.news-list{display:flex;flex-direction:column;gap:0.75rem}.news-item{display:flex;align-items:flex-start;gap:0.85rem;padding:1rem 1.15rem;border-radius:12px;background:var(--color-surface);border:1px solid var(--color-border);border-left:3px solid var(--card-color,var(--color-accent));text-decoration:none;color:var(--color-text);transition:all 0.2s ease}.news-item:hover{transform:translateX(3px);box-shadow:0 6px 18px rgba(0,0,0,0.07)}.news-dot{flex:0 0 auto;width:8px;height:8px;border-radius:50%;background:var(--card-color,var(--color-accent));margin-top:0.5rem;opacity:0.8}.news-body{display:flex;flex-direction:column;gap:0.2rem;min-width:0}.news-title{font-size:0.9375rem;font-weight:600;line-height:1.45}.news-meta{font-size:0.75rem;color:var(--color-text-muted)}.news-go{margin-left:auto;color:var(--card-color,var(--color-accent));opacity:0;transition:opacity 0.2s ease,transform 0.2s ease;font-weight:700}.news-item:hover .news-go{opacity:1;transform:translateX(2px)}.news-foot{margin-top:2rem;font-size:0.75rem;color:var(--color-text-muted)}.nutshell-box{padding:1.25rem 1.5rem;border-radius:10px;background:color-mix(in srgb,var(--color-accent) 8%,transparent);border:1px solid color-mix(in srgb,var(--color-accent) 20%,transparent);margin-bottom:1.5rem}.nutshell-box .nutshell-label{font-size:var(--text-xs);font-weight:700;text-transform:uppercase;letter-spacing:0.05em;color:var(--color-accent);margin-bottom:0.5rem}.nutshell-box p{font-size:var(--text-base);line-height:1.6;color:var(--color-text)}.deep-dive-toggle{display:inline-flex;align-items:center;gap:0.5rem;padding:0.5rem 1rem;border-radius:8px;font-size:0.8125rem;font-weight:600;background:var(--color-surface);border:1px solid var(--color-border);color:var(--color-text-secondary);cursor:pointer;transition:all 0.2s ease;font-family:inherit;margin-bottom:1rem}.deep-dive-toggle:hover{border-color:var(--color-accent);color:var(--color-accent)}.deep-dive-toggle.active{background:color-mix(in srgb,var(--color-accent) 10%,transparent);border-color:var(--color-accent);color:var(--color-accent)}.path-timeline{position:relative;padding-left:2.5rem}.path-timeline::before{content:'';position:absolute;left:1rem;top:0.5rem;bottom:0.5rem;width:2px;background:var(--color-border)}.path-stage{position:relative;padding:1rem 1.25rem;margin-bottom:1rem;border-radius:10px;background:var(--color-surface);border:1px solid var(--color-border);transition:all 0.2s ease}.path-stage::before{content:attr(data-stage);position:absolute;left:-1.75rem;top:1.25rem;width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:0.75rem;font-weight:700;background:var(--color-bg);border:2px solid var(--color-border);color:var(--color-text-muted)}.path-stage.completed{border-color:color-mix(in srgb,var(--color-accent) 30%,transparent)}.path-stage.completed::before{background:var(--color-accent);border-color:var(--color-accent);color:#fff}.path-stage.active{border-color:var(--color-accent);box-shadow:0 0 0 1px var(--color-accent)}.path-stage.active::before{border-color:var(--color-accent);color:var(--color-accent)}.path-stage.locked{opacity:0.5}.path-stage .stage-progress{font-size:var(--text-xs);color:var(--color-text-muted);margin-top:0.375rem}.path-stage .stage-progress-bar{height:4px;border-radius:999px;background:var(--color-border);margin-top:0.375rem;overflow:hidden}.path-stage .stage-progress-bar .fill{height:100%;border-radius:999px;background:var(--color-accent);transition:width 0.5s ease}.pillar-pill{display:inline-block;font-size:0.75rem;padding:0.15rem 0.6rem;border-radius:4px;font-weight:600}.pillar-pill-sm{display:inline-block;font-size:0.625rem;padding:0.1rem 0.45rem;border-radius:4px;font-weight:600}.alias-tag{font-size:0.6875rem;padding:0.15rem 0.5rem;border-radius:999px;background:var(--color-surface);color:var(--color-text-muted);border:1px solid var(--color-border)}.badge-outline{font-size:0.75rem;padding:0.2rem 0.5rem;border-radius:4px;background:var(--color-bg);color:var(--color-text-muted);border:1px solid var(--color-border);text-decoration:none;transition:all 0.15s ease;white-space:nowrap}.badge-outline:hover{border-color:var(--color-accent);color:var(--color-accent)}.badge-pill{display:inline-block;font-size:0.75rem;padding:0.2rem 0.5rem;border-radius:4px;font-weight:600;white-space:nowrap}.btn-ghost-sm{display:inline-flex;align-items:center;gap:0.25rem;font-size:0.75rem;font-weight:600;padding:0.35rem 0.75rem;border-radius:6px;text-decoration:none;background:var(--color-surface);color:var(--color-text);border:1px solid var(--color-border);transition:all 0.15s ease}.btn-ghost-sm:hover{border-color:var(--color-accent);color:var(--color-accent)}.best-match-box{padding:0.75rem 1rem;border-radius:8px;margin-bottom:0.75rem}.sqi-badge{display:inline-block;padding:0.05rem 0.35rem;border-radius:4px;font-size:0.625rem;font-weight:600}.prereq-tag{font-size:0.75rem;padding:0.15rem 0.5rem;border-radius:4px;text-decoration:none;transition:all 0.15s ease;background:color-mix(in srgb,#22c55e 12%,transparent);color:#22c55e;border:1px solid color-mix(in srgb,#22c55e 25%,transparent)}.prereq-tag:hover{opacity:0.8}.dep-tag{font-size:0.75rem;padding:0.15rem 0.5rem;border-radius:4px;text-decoration:none;transition:all 0.15s ease;background:color-mix(in srgb,#a855f7 12%,transparent);color:#a855f7;border:1px solid color-mix(in srgb,#a855f7 25%,transparent)}.dep-tag:hover{opacity:0.8}.meta-badge{display:inline-flex;align-items:center;gap:0.25rem;font-size:0.75rem;color:var(--color-text-muted)}.teachback-submit{transition:opacity 0.15s ease}.teachback-submit:hover{opacity:0.85}.related-carousel{display:flex;gap:1rem;overflow-x:auto;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;padding-bottom:0.5rem}.related-carousel>*{scroll-snap-align:start;flex:0 0 260px}.feedback-btn{display:inline-flex;align-items:center;gap:0.375rem;padding:0.375rem 0.75rem;border-radius:999px;font-size:0.75rem;font-weight:500;background:var(--color-surface);border:1px solid var(--color-border);color:var(--color-text-muted);cursor:pointer;transition:all 0.2s ease;font-family:inherit}.feedback-btn:hover{border-color:var(--color-accent);color:var(--color-accent)}.feedback-btn.active{background:color-mix(in srgb,var(--color-accent) 12%,transparent);border-color:var(--color-accent);color:var(--color-accent)}.weekly-header{margin-bottom:2rem}.weekly-header h1{font-size:var(--text-2xl);margin-bottom:0.25rem}.weekly-date{font-size:0.9rem;color:var(--color-text-muted)}.weekly-stats{font-size:0.85rem;color:var(--color-text-secondary);margin-top:0.25rem}.pillar-tabs{display:flex;gap:0.5rem;margin:1rem 0;flex-wrap:wrap}.pillar-tab{padding:0.5rem 1rem;border-radius:0.5rem;text-decoration:none;font-weight:600;border:1px solid var(--color-border);color:var(--color-text-secondary);transition:all 0.2s ease;font-size:0.875rem}.pillar-tab:hover{border-color:var(--color-accent);color:var(--color-text)}.pillar-tab.active{background:var(--color-accent);color:#fff;border-color:var(--color-accent)}.vibe-badge{display:inline-flex;align-items:center;gap:0.375rem;padding:0.25rem 0.75rem;border-radius:999px;background:var(--color-surface);border:1px solid var(--color-border);font-size:0.85rem;font-weight:600}.vibe-badge .vibe-emoji{font-size:1.1rem}.takeaway-box{background:var(--color-surface);border:1px solid var(--color-border);border-radius:0.75rem;padding:1.25rem 1.5rem;margin-bottom:2rem}.takeaway-box p{margin:0;font-size:1.05rem;line-height:1.6}.takeaway-box strong{color:var(--color-accent)}.event-card{border:1px solid var(--color-border);border-radius:0.75rem;padding:1.25rem 1.5rem;margin-bottom:1.25rem;background:var(--color-surface);transition:box-shadow 0.2s ease}.event-card:hover{box-shadow:0 4px 20px rgba(0,0,0,0.06)}.event-card h3{margin-top:0;margin-bottom:0.5rem;font-size:var(--text-base)}.event-card-header{display:flex;align-items:flex-start;justify-content:space-between;gap:0.75rem;margin-bottom:0.75rem}.event-fingerprint{flex-shrink:0;opacity:0.7;transition:opacity 0.2s ease}.event-card:hover .event-fingerprint{opacity:1}.event-meta{display:flex;align-items:center;gap:0.75rem;font-size:0.8rem;color:var(--color-text-muted)}.event-meta .date-badge{display:inline-flex;align-items:center;gap:0.25rem;padding:0.15rem 0.5rem;border-radius:0.25rem;background:var(--color-bg);border:1px solid var(--color-border);font-size:0.75rem;font-weight:600;font-family:var(--font-mono)}.card-section{padding:0.75rem 1rem;margin:0.75rem 0;border-radius:0 0.5rem 0.5rem 0;font-size:0.9375rem;line-height:1.65}.card-section strong{display:block;font-size:0.75rem;text-transform:uppercase;letter-spacing:0.04em;margin-bottom:0.25rem}.card-section.feynman{background:color-mix(in srgb,#6366f1 8%,transparent);border-left:3px solid #6366f1}.card-section.feynman strong{color:#6366f1}.card-section.analogy{background:color-mix(in srgb,#eab308 8%,transparent);border-left:3px solid #eab308}.card-section.analogy strong{color:#eab308}.card-section.why{background:color-mix(in srgb,#22c55e 8%,transparent);border-left:3px solid #22c55e}.card-section.why strong{color:#22c55e}.event-links{margin-top:0.75rem;display:flex;gap:0.5rem;flex-wrap:wrap}.event-links a{font-size:0.8rem;padding:0.25rem 0.75rem;border-radius:0.5rem;background:var(--color-surface);border:1px solid var(--color-border);text-decoration:none;color:var(--color-text-secondary);transition:all 0.15s ease}.event-links a:hover{background:var(--color-accent);color:#fff;border-color:var(--color-accent)}.week-empty{color:var(--color-text-muted);padding:2rem;text-align:center}.week-empty p{font-style:italic;margin-bottom:0.75rem}.week-empty-actions{display:flex;gap:0.5rem;justify-content:center;flex-wrap:wrap}.weekly-nav{display:flex;justify-content:space-between;align-items:center;margin:2rem 0 1rem;padding-top:1rem;border-top:1px solid var(--color-border)}.weekly-nav a{display:inline-flex;align-items:center;gap:0.375rem;padding:0.5rem 1rem;border-radius:0.5rem;text-decoration:none;font-weight:500;font-size:0.875rem;color:var(--color-text-secondary);border:1px solid var(--color-border);transition:all 0.15s ease}.weekly-nav a:hover{border-color:var(--color-accent);color:var(--color-accent)}.weekly-nav .nav-center{font-size:0.8rem;color:var(--color-text-muted)}.jump-week{display:flex;align-items:center;gap:0.5rem;margin-bottom:1rem}.jump-week select{padding:0.375rem 0.75rem;border-radius:0.5rem;border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text);font-size:0.85rem;font-family:inherit;max-width:180px}.jump-week label{font-size:0.85rem;color:var(--color-text-secondary);font-weight:500}.archive-header{margin-bottom:2rem}.archive-header h1{font-size:var(--text-2xl)}.archive-header p{color:var(--color-text-secondary);max-width:560px}.pillar-section{margin-bottom:2.5rem}.pillar-section h2{display:flex;align-items:center;gap:0.5rem;font-size:1.25rem;font-weight:700;margin-bottom:0.75rem}.pillar-section h2 .pillar-indicator{width:4px;height:1.25rem;border-radius:2px}.week-card{border:1px solid var(--color-border);border-radius:0.75rem;padding:1rem;text-decoration:none;color:inherit;transition:all 0.2s ease;background:var(--color-surface);position:relative}.week-card:hover{box-shadow:0 4px 16px rgba(0,0,0,0.08);transform:translateY(-2px)}.week-card .vibe{font-size:1.5rem;line-height:1;margin-bottom:0.25rem}.week-card .week-id{font-weight:700;font-size:0.9rem}.week-card .date-range{font-size:0.8rem;color:var(--color-text-muted)}.week-card .event-preview{font-size:0.8rem;color:var(--color-text-secondary);margin-top:0.375rem;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.week-card .event-count{font-size:0.75rem;color:var(--color-text-muted);margin-top:0.375rem}.week-card .latest-badge{position:absolute;top:-0.375rem;right:-0.375rem;background:var(--color-accent);color:#fff;font-size:0.65rem;font-weight:700;padding:0.15rem 0.5rem;border-radius:999px}.empty-state{color:var(--color-text-muted);padding:2rem;text-align:center}.empty-state p{font-style:italic;margin-bottom:0.75rem}.empty-state-actions{display:flex;gap:0.5rem;justify-content:center;flex-wrap:wrap}.all-pillar-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:1.5rem}.search-layout{display:flex;gap:1.5rem;max-width:960px;margin:0 auto}.search-filters-toggle{display:none;margin-bottom:1rem;padding:0.5rem 1rem;font-size:0.85rem;border-radius:8px;border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text);cursor:pointer}.search-filters-toggle:hover{border-color:var(--color-accent);color:var(--color-accent)}.search-sidebar{width:200px;flex-shrink:0}.search-sidebar h3{font-size:0.8rem;font-weight:700;text-transform:uppercase;letter-spacing:0.05em;color:var(--color-text-muted);margin-bottom:0.5rem}.search-sidebar .filter-group{margin-bottom:1.25rem}.search-sidebar label{display:flex;align-items:center;gap:0.4rem;font-size:0.85rem;padding:0.25rem 0;cursor:pointer}.search-sidebar label:hover{color:var(--color-accent)}.search-sidebar input[type="checkbox"]{accent-color:var(--color-accent)}.search-sidebar .reset-btn{font-size:0.75rem;padding:0.3rem 0.6rem;border-radius:4px;border:1px solid var(--color-border);background:transparent;color:var(--color-text-muted);cursor:pointer;width:100%}.search-sidebar .reset-btn:hover{color:var(--color-text);border-color:var(--color-accent)}.search-main{flex:1;min-width:0}.search-input-wrap{max-width:100%;margin-bottom:1rem;position:relative}.search-input-wrap input{width:100%;padding:0.75rem 1rem;font-size:1.1rem;border-radius:8px;border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text);box-sizing:border-box}.search-input-wrap input:focus{outline:none;border-color:var(--color-accent)}#search-suggestions{display:none;position:absolute;top:100%;left:0;right:0;z-index:100;background:var(--color-surface);border:1px solid var(--color-border);border-top:none;border-radius:0 0 8px 8px;max-height:300px;overflow-y:auto}.search-loading{display:flex;align-items:center;justify-content:center;gap:0.5rem;padding:2rem 0;color:var(--color-text-muted);font-size:0.9rem}.search-spinner{width:1.1rem;height:1.1rem;border:2px solid var(--color-border);border-top-color:var(--color-accent);border-radius:50%;animation:search-spin 0.8s linear infinite}@keyframes search-spin{to{transform:rotate(360deg)}}.suggestion-item:hover{background:color-mix(in srgb,var(--color-accent) 10%,transparent)}.suggestion-item mark{background:transparent;color:var(--color-accent);font-weight:700}.suggestion-section-label{padding:0.35rem 0.75rem 0.2rem;font-size:0.65rem;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:0.05em;font-weight:600;border-bottom:1px solid var(--color-border)}#search-stats{font-size:0.85rem;color:var(--color-text-muted);margin-bottom:1rem}.search-result:hover{border-color:var(--color-accent) !important}#search-results{max-width:100%}@media (max-width:768px){.search-layout{flex-direction:column}.search-filters-toggle{display:block;width:100%}.search-sidebar{width:100%;display:none}.search-sidebar.search-sidebar-open{display:block}.search-sidebar .filter-row{display:flex;gap:1.5rem;flex-wrap:wrap}.search-sidebar .filter-group{margin-bottom:0}}.knowledge-category-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:0.75rem;margin:1rem 0}.knowledge-cat-card{display:flex;flex-direction:column;align-items:center;text-align:center;padding:1rem 0.75rem;border-radius:10px;background:var(--color-surface);border:1px solid var(--color-border);text-decoration:none;transition:all 0.2s ease}.knowledge-cat-card:hover{border-color:var(--color-accent);transform:translateY(-2px);box-shadow:0 4px 16px rgba(0,0,0,0.08)}.knowledge-cat-card .cat-icon{font-size:1.5rem;line-height:1;margin-bottom:0.375rem}.knowledge-cat-card .cat-name{font-size:0.75rem;font-weight:600;color:var(--color-text);line-height:1.3}.knowledge-cat-card .cat-count{font-size:0.65rem;color:var(--color-text-muted);margin-top:0.2rem}}@layer utilities{.icon-inline{display:inline-block;width:1em;height:1em;vertical-align:-0.125em;flex-shrink:0}.icon-sm{display:inline-block;width:0.875em;height:0.875em;vertical-align:-0.1em;flex-shrink:0}.icon-lg{display:inline-block;width:1.25em;height:1.25em;vertical-align:-0.2em;flex-shrink:0}.icon-xl{display:inline-block;width:1.5em;height:1.5em;vertical-align:-0.25em;flex-shrink:0}.icon-box{display:inline-flex;align-items:center;justify-content:center;width:2.5em;height:2.5em;border-radius:0.5em;flex-shrink:0}.icon-box-sm{display:inline-flex;align-items:center;justify-content:center;width:2em;height:2em;border-radius:0.4em;flex-shrink:0}.article-featured-image{width:100%;height:auto;max-height:400px;object-fit:cover;border-radius:12px;margin-bottom:1.5rem}.placeholder-image svg{width:4rem;height:4rem}.pillar-card .pillar-icon{font-size:2.5rem;line-height:1;display:inline-block}.feynman-icon{width:1em;height:1em;vertical-align:-0.125em}.section-icon{width:1.2em;height:1.2em;vertical-align:-0.2em;flex-shrink:0}.badge-icon{width:0.85em;height:0.85em;vertical-align:-0.1em}.visual-abstract .va-icon-box{width:3rem;height:3rem;display:flex;align-items:center;justify-content:center;border-radius:0.75rem;flex-shrink:0}.visual-abstract .va-icon-box svg{width:1.5rem;height:1.5rem}.transition-motion{transition:all var(--duration-fast) var(--ease-out-cubic)}.transition-spring{transition:all var(--duration-normal) var(--ease-spring)}.transition-slow{transition:all var(--duration-slow) var(--ease-out-cubic)}.hover-lift{transition:transform var(--duration-fast) var(--ease-out-cubic),box-shadow var(--duration-fast) var(--ease-out-cubic)}.hover-lift:hover{transform:translateY(-2px);box-shadow:0 8px 24px -8px rgba(0,0,0,0.12)}.hover-lift:active{transform:translateY(0)}.hover-scale{transition:transform var(--duration-fast) var(--ease-spring)}.hover-scale:hover{transform:scale(1.03)}.hover-scale:active{transform:scale(0.97)}.hover-glow{transition:box-shadow var(--duration-fast) var(--ease-out-cubic)}.hover-glow:hover{box-shadow:0 0 0 3px color-mix(in srgb,var(--color-accent) 20%,transparent)}.click-ripple{position:relative;overflow:hidden}.btn-settings{transition:color var(--duration-fast) var(--ease-out-cubic),transform var(--duration-fast) var(--ease-spring)}.btn-settings:hover{color:var(--color-accent);transform:rotate(30deg)}.entrance-fade{animation:entranceFade var(--duration-slow) var(--ease-out-cubic) both}.entrance-slide-up{animation:entranceSlideUp var(--duration-slow) var(--ease-out-cubic) both}.entrance-slide-down{animation:entranceSlideDown var(--duration-slow) var(--ease-out-cubic) both}@keyframes entranceFade{from{opacity:0}to{opacity:1}}@keyframes entranceSlideUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes entranceSlideDown{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.js .entrance-stagger>*{opacity:0}.js .entrance-stagger.is-revealed>*{animation:entranceSlideUp var(--duration-slow) var(--ease-out-cubic) both;animation-delay:calc(var(--stagger-index,0) * 60ms)}.js .reveal-on-scroll{opacity:0;transform:translateY(12px);transition:opacity var(--duration-normal) var(--ease-out-cubic),transform var(--duration-normal) var(--ease-out-cubic)}.reveal-on-scroll.revealed{opacity:1;transform:translateY(0)}.js .entrance-stagger:not(.is-revealed)>*,.js .reveal-on-scroll:not(.revealed){visibility:hidden}@media (prefers-reduced-motion:reduce){.entrance-stagger>*,.reveal-on-scroll,.reveal-on-scroll.revealed{opacity:1 !important;transform:none !important;animation:none !important;visibility:visible !important;transition:none !important}}.skeleton{background:linear-gradient(90deg,var(--color-surface) 25%,var(--color-surface-hover) 50%,var(--color-surface) 75%);background-size:200% 100%;animation:skeletonShimmer 1.5s ease-in-out infinite;border-radius:6px;color:transparent !important;user-select:none;pointer-events:none}@keyframes skeletonShimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}.article-toc{font-size:0.875rem;margin-bottom:2rem}.article-toc-inner{background:var(--color-surface);border:1px solid var(--color-border);border-radius:10px;padding:0.75rem 0}.article-toc-title{font-weight:700;font-size:0.75rem;text-transform:uppercase;letter-spacing:0.05em;color:var(--color-text-muted);padding:0 1rem 0.5rem;border-bottom:1px solid var(--color-border);margin-bottom:0.25rem}.article-toc ol{list-style:none;padding:0;margin:0}.article-toc li{margin:0;padding:0}.article-toc a{display:block;padding:0.3rem 1rem 0.3rem 1rem;color:var(--color-text-secondary);text-decoration:none;font-size:0.8125rem;transition:all 0.15s ease;border-left:2px solid transparent}.article-toc a:hover{color:var(--color-accent);background:color-mix(in srgb,var(--color-accent) 6%,transparent)}.article-toc a.active{color:var(--color-accent);border-left-color:var(--color-accent);background:color-mix(in srgb,var(--color-accent) 8%,transparent);font-weight:600}.article-toc .toc-h3{padding-left:1.75rem;font-size:0.75rem}.article-toc ol ol{margin-top:0}@media (min-width:1024px){article.article-with-toc{display:grid;grid-template-columns:1fr 220px;gap:2rem}article.article-with-toc>nav.article-toc{grid-column:2;grid-row:1;position:sticky;top:2rem;align-self:start;margin:0;max-height:calc(100vh - 4rem);overflow-y:auto}}.prose-body h2,.prose-body h3{scroll-margin-top:2rem}.shortcuts-overlay{position:fixed;inset:0;z-index:10000;background:rgba(0,0,0,0.5);display:flex;align-items:center;justify-content:center}.shortcuts-modal{background:var(--color-surface);border:1px solid var(--color-border);border-radius:14px;max-width:400px;width:90%;box-shadow:0 20px 60px rgba(0,0,0,0.3);overflow:hidden}.shortcuts-header{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.25rem;border-bottom:1px solid var(--color-border)}.shortcuts-title{font-weight:700;font-size:0.9375rem;color:var(--color-text)}.shortcuts-close{background:none;border:none;font-size:1.25rem;color:var(--color-text-muted);cursor:pointer;padding:0;line-height:1}.shortcuts-close:hover{color:var(--color-text)}.shortcuts-body{padding:0.75rem 0}.shortcut-row{display:flex;align-items:center;gap:0.75rem;padding:0.4rem 1.25rem;font-size:0.8125rem;color:var(--color-text-secondary)}.shortcut-row kbd{display:inline-flex;align-items:center;justify-content:center;min-width:1.5rem;height:1.5rem;padding:0 0.375rem;font-size:0.6875rem;font-weight:700;font-family:var(--font-mono);background:var(--color-bg);border:1px solid var(--color-border);border-radius:4px;color:var(--color-text)}.shortcut-row span{flex:1}[data-focus="true"] .focus-hide{display:none !important}[data-focus="true"] .prose-body{max-width:72ch;margin:0 auto}[data-focus="true"] .prose-body p{font-size:calc(var(--text-base) * var(--density-font-scale))}.reading-guide{position:fixed;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,var(--color-accent) 20%,var(--color-accent) 80%,transparent);opacity:0;pointer-events:none;z-index:9998;transition:opacity var(--duration-fast) var(--ease-out-cubic)}.reading-guide.visible{opacity:0.25}.dot-inline{display:inline-block;width:0.4em;height:0.4em;border-radius:50%;vertical-align:middle}.bg-bg{background:var(--color-bg)}.border-default{border:1px solid var(--color-border)}.ghost-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:12px}.avatar-circle{width:1.5em;height:1.5em;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;background:var(--color-surface);border:1px solid var(--color-border);flex-shrink:0}.empty-state-icon{width:3em;height:3em;display:block;margin:0 auto 0.75rem auto;color:var(--color-accent)}.theme-dot{display:inline-block;width:0.75em;height:0.75em;border-radius:50%;vertical-align:middle;flex-shrink:0}.node-step-num{display:inline-flex;align-items:center;justify-content:center;width:1.5em;height:1.5em;border-radius:50%;font-size:0.75em;font-weight:700;flex-shrink:0}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.bg-surface{background:var(--color-surface)}.bg-border{background:var(--color-border)}.border-muted{border-color:var(--color-border)}.border-accent{border-color:var(--color-accent)}.line-height-relaxed{line-height:1.7}.line-height-base{line-height:1.6}.text-decoration-none{text-decoration:none}.text-center{text-align:center}.mb-6{margin-bottom:1.5rem}.truncate{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.max-w-200px{max-width:200px}.hover-accent{transition:color 0.15s ease}.hover-accent:hover{color:var(--color-accent)}.group-hover-accent{transition:color 0.15s ease}.group:hover .group-hover-accent{color:var(--color-accent)}.img-hero{max-height:400px;object-fit:cover}.lh-1\\.6{line-height:1.6}.lh-1\\.7{line-height:1.7}.step-circle{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:50%;background:var(--color-accent);color:#fff;font-size:1.25rem;font-weight:700;margin-bottom:1rem}.meta-badge svg{width:1em;height:1em}.hidden{display:none !important}.block{display:block}.inline-block{display:inline-block}.flex{display:flex}.inline-flex{display:inline-flex}.flex-col{flex-direction:column}.flex-wrap{flex-wrap:wrap}.flex-1{flex:1 1 0%}.grid{display:grid}.grid-cols-1{grid-template-columns:repeat(1,minmax(0,1fr))}.grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.relative{position:relative}.absolute{position:absolute}.sticky{position:sticky}.top-0{top:0}.left-0{left:0}.min-w-0{min-width:0}.self-center{align-self:center}.gap-0\.5{gap:0.125rem}.gap-1{gap:0.25rem}.gap-1\.5{gap:0.375rem}.gap-2{gap:0.5rem}.gap-3{gap:0.75rem}.gap-4{gap:1rem}.gap-6{gap:1.5rem}.gap-8{gap:2rem}.mt-0\.5{margin-top:0.125rem}.mt-1{margin-top:0.25rem}.mt-1\.5{margin-top:0.375rem}.mt-2{margin-top:0.5rem}.mt-3{margin-top:0.75rem}.mt-4{margin-top:1rem}.mt-6{margin-top:1.5rem}.mt-8{margin-top:2rem}.mt-10{margin-top:2.5rem}.mt-12{margin-top:3rem}.mb-1{margin-bottom:0.25rem}.mb-1\.5{margin-bottom:0.375rem}.mb-2{margin-bottom:0.5rem}.mb-3{margin-bottom:0.75rem}.mb-4{margin-bottom:1rem}.mb-8{margin-bottom:2rem}.mb-10{margin-bottom:2.5rem}.ml-1{margin-left:0.25rem}.ml-2{margin-left:0.5rem}.ml-auto{margin-left:auto}.mr-1{margin-right:0.25rem}.p-1{padding:0.25rem}.p-2{padding:0.5rem}.p-3{padding:0.75rem}.p-4{padding:1rem}.p-5{padding:1.25rem}.p-6{padding:1.5rem}.p-8{padding:2rem}.px-1{padding-left:0.25rem;padding-right:0.25rem}.px-1\.5{padding-left:0.375rem;padding-right:0.375rem}.px-2{padding-left:0.5rem;padding-right:0.5rem}.px-2\.5{padding-left:0.625rem;padding-right:0.625rem}.px-3{padding-left:0.75rem;padding-right:0.75rem}.px-4{padding-left:1rem;padding-right:1rem}.py-0\.5{padding-top:0.125rem;padding-bottom:0.125rem}.py-1{padding-top:0.25rem;padding-bottom:0.25rem}.py-1\.5{padding-top:0.375rem;padding-bottom:0.375rem}.py-2{padding-top:0.5rem;padding-bottom:0.5rem}.pt-2{padding-top:0.5rem}.pt-3{padding-top:0.75rem}.pt-4{padding-top:1rem}.pt-6{padding-top:1.5rem}.pt-8{padding-top:2rem}.pb-1{padding-bottom:0.25rem}.pb-2{padding-bottom:0.5rem}.w-full{width:100%}.w-px{width:1px}.w-1\.5{width:0.375rem}.w-2{width:0.5rem}.w-3{width:0.75rem}.w-5{width:1.25rem}.w-8{width:2rem}.w-10{width:2.5rem}.h-px{height:1px}.h-1\.5{height:0.375rem}.h-2{height:0.5rem}.h-3{height:0.75rem}.h-8{height:2rem}.h-10{height:2.5rem}.h-full{height:100%}.max-w-prose{max-width:65ch}.max-w-md{max-width:28rem}.max-w-lg{max-width:32rem}.max-w-\[200px\]{max-width:200px}.text-xs{font-size:var(--text-xs,0.75rem)}.text-sm{font-size:var(--text-sm,0.875rem)}.text-base{font-size:var(--text-base,1.0625rem)}.text-lg{font-size:var(--text-lg,1.125rem)}.text-2xl{font-size:var(--text-2xl,1.5rem)}.text-3xl{font-size:var(--text-3xl,1.75rem)}.text-4xl{font-size:var(--text-4xl,2rem)}.text-\[9px\]{font-size:9px}.text-\[10px\]{font-size:10px}.text-\[11px\]{font-size:11px}.font-normal{font-weight:400}.font-medium{font-weight:500}.font-semibold{font-weight:600}.font-bold{font-weight:700}.font-extrabold{font-weight:800}.font-display{font-family:var(--font-display,Georgia,serif)}.font-mono{font-family:var(--font-mono,ui-monospace,monospace)}.leading-tight{line-height:1.25}.leading-relaxed{line-height:1.7}.tracking-wide{letter-spacing:0.025em}.tracking-wider{letter-spacing:0.05em}.uppercase{text-transform:uppercase}.italic{font-style:italic}.text-left{text-align:left}.text-right{text-align:right}.text-end{text-align:end}.text-white{color:#fff}.text-green-500{color:#22c55e}.text-red-400{color:#f87171}.text-red-500{color:#ef4444}.text-yellow-500{color:#eab308}.text-orange-400{color:#fb923c}.rounded{border-radius:0.25rem}.rounded-md{border-radius:0.375rem}.rounded-lg{border-radius:0.5rem}.rounded-full{border-radius:9999px}.opacity-50{opacity:0.5}.opacity-60{opacity:0.6}.opacity-70{opacity:0.7}.overflow-hidden{overflow:hidden}.overflow-x-auto{overflow-x:auto}.line-clamp-1{display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}.line-clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.whitespace-nowrap{white-space:nowrap}.select-none{user-select:none}.cursor-pointer{cursor:pointer}.border-t{border-top:1px solid var(--color-border)}.border-b{border-bottom:1px solid var(--color-border)}.border-muted\/20{border-color:color-mix(in srgb,var(--color-border) 20%,transparent)}.border-muted\/30{border-color:color-mix(in srgb,var(--color-border) 30%,transparent)}.space-y-0\.5>*+*{margin-top:0.125rem}.space-y-1>*+*{margin-top:0.25rem}.space-y-1\.5>*+*{margin-top:0.375rem}.space-y-2>*+*{margin-top:0.5rem}.space-y-3>*+*{margin-top:0.75rem}.space-y-4>*+*{margin-top:1rem}.space-y-6>*+*{margin-top:1.5rem}.items-center{align-items:center}.items-start{align-items:flex-start}.items-end{align-items:flex-end}.items-baseline{align-items:baseline}.justify-between{justify-content:space-between}.justify-center{justify-content:center}.justify-end{justify-content:flex-end}@media (min-width:640px){.sm\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.sm\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.sm\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}}@media (min-width:768px){.md\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (min-width:1024px){.lg\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.lg\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.lg\:col-span-2{grid-column:span 2 / span 2}}.btn-primary-sm{display:inline-flex;align-items:center;justify-content:center;gap:0.25rem;padding:0.375rem 0.875rem;font-size:0.8125rem;font-weight:600;line-height:1.25;border-radius:0.5rem;border:1px solid transparent;background:var(--color-accent);color:#fff;cursor:pointer;font-family:inherit;transition:opacity 0.15s ease}.btn-primary-sm:hover{opacity:0.9}.btn-outline-sm{display:inline-flex;align-items:center;justify-content:center;gap:0.25rem;padding:0.375rem 0.875rem;font-size:0.8125rem;font-weight:600;line-height:1.25;border-radius:0.5rem;border:1px solid var(--color-border);background:transparent;color:var(--color-text);cursor:pointer;font-family:inherit;transition:all 0.15s ease}.btn-outline-sm:hover{background:var(--color-surface);border-color:var(--color-accent);color:var(--color-accent)}.btn-secondary{display:inline-flex;align-items:center;justify-content:center;gap:0.25rem;padding:0.5rem 1rem;font-size:0.875rem;font-weight:600;line-height:1.25;border-radius:0.5rem;border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text);cursor:pointer;font-family:inherit;transition:all 0.15s ease}.btn-secondary:hover{border-color:var(--color-accent);color:var(--color-accent)}.hover-underline{text-decoration:none}.hover-underline:hover{text-decoration:underline}.gaps-layer{display:flex;flex-direction:column;gap:0.25rem}}@layer overrides{@media (max-width:640px){.hero-section{padding:1.5rem 0}.feynman-stages{gap:0.25rem}.feynman-stage-dot{min-width:48px}.feynman-stage-dot .stage-label{font-size:0.5rem}}[data-density="compact"] .prose-body{max-width:72ch}[data-density="compact"] .prose-body p{margin-bottom:0.75rem}[data-density="compact"] .prose-body h2{margin:1.5rem 0 0.5rem}[data-density="compact"] .prose-body h3{margin:1rem 0 0.375rem}[data-density="compact"] .ghost-card{padding:calc(var(--density-card-standard) * 0.75)}[data-density="compact"] .card{padding:calc(var(--density-card-standard) * 0.75)}[data-density="comfortable"] .prose-body{max-width:60ch}[data-density="comfortable"] .prose-body p{margin-bottom:1.5rem}[data-density="comfortable"] .prose-body h2{margin:3rem 0 1rem}[data-density="comfortable"] .prose-body h3{margin:2rem 0 0.75rem}[data-density="comfortable"] .ghost-card{padding:calc(var(--density-card-standard) * 1.25)}[data-density="comfortable"] .card{padding:calc(var(--density-card-standard) * 1.25)}.blog-reading-progress{position:fixed;top:0;left:0;height:3px;z-index:9999;width:0%;background:var(--color-accent)}.collapsible-section{position:relative}.collapsible-section>:not(.section-header){display:none}.collapsible-section.expanded>:not(.section-header){display:block}.collapsible-section>.section-header{cursor:pointer;user-select:none;display:flex;align-items:center;gap:0.5rem;padding:0.25rem 0}.collapsible-section>.section-header::before{content:'';display:inline-block;width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;border-top:5px solid var(--color-text-muted);transition:transform 0.2s ease;margin-right:0.25rem}.collapsible-section.expanded>.section-header::before{transform:rotate(180deg)}.section-header{cursor:pointer;user-select:none;display:flex;align-items:center;gap:0.5rem;padding:0.5rem 0}.section-header::before{content:'\25B6';transition:transform 0.2s;font-size:0.7em}.section-header.is-expanded::before{content:'\25BC'}.prose-section.is-collapsed{max-height:3rem;overflow:hidden;transition:max-height 0.3s ease}.prose-section{max-height:none;transition:max-height 0.3s ease}.card-research-summary{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;font-size:0.875rem;line-height:1.55;color:var(--color-text-secondary)}.gen-answer:focus{outline:2px solid var(--color-accent);outline-offset:-1px}details.ghost-card summary::-webkit-details-marker{color:var(--color-text-muted)}details.ghost-card summary{list-style:none;display:flex;align-items:center;gap:0.5rem}details.ghost-card summary::before{content:'\25B6';font-size:0.7em;transition:transform 0.2s;color:var(--color-text-muted)}details.ghost-card[open] summary::before{content:'\25BC'}.teachback-input:focus{outline:2px solid var(--color-accent);outline-offset:-1px}.build-exercise-input:focus{outline:2px solid var(--color-accent);outline-offset:-1px}.feynman-synthesis-input:focus{outline:2px solid var(--color-accent);outline-offset:-1px}.feynman-review-card{animation:feynmanSlideIn 0.3s ease-out}@keyframes feynmanSlideIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.feynman-review-card .self-grade label,.feynman-review-card .checklist label{display:flex;align-items:center;gap:0.5rem;margin:0.5rem 0;cursor:pointer;font-size:0.875rem}.feynman-review-card textarea{width:100%;min-height:80px;padding:0.5rem;border:1px solid var(--color-border);border-radius:0.375rem;font-family:inherit;font-size:0.875rem;resize:vertical}.feynman-review-card textarea:focus{outline:2px solid var(--color-accent);outline-offset:-1px}@keyframes dotPulse{0%,100%{transform:scale(1)}50%{transform:scale(1.3)}}.feynman-card:hover .feynman-difficulty-dot{animation:dotPulse 1.5s ease-in-out infinite}@media (min-width:768px){.events-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.events-grid .event-card{margin-bottom:0}.event-card.full-width{grid-column:1 / -1}}.week-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:0.75rem}@media (max-width:640px){.weekly-nav{flex-direction:column;gap:0.5rem}.weekly-nav a{width:100%;justify-content:center}.event-card{padding:1rem}.all-pillar-grid{grid-template-columns:1fr}.week-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr))}}.pillar-dot{display:inline-block;width:10px;height:10px;border-radius:50%;flex-shrink:0}.pillar-dot-aml{background:#f59e0b;box-shadow:0 0 4px rgba(245,158,11,0.4)}.pillar-dot-markets{background:#16a34a;box-shadow:0 0 4px rgba(22,163,74,0.4)}.pillar-dot-data{background:#6366f1;box-shadow:0 0 4px rgba(99,102,241,0.4)}[data-pillar="aml"]{border-left-color:#f59e0b}[data-pillar="stock"]{border-left-color:#16a34a}[data-pillar="data-engineering"]{border-left-color:#6366f1}.pillar-card-aml{border-left:3px solid #f59e0b;background:linear-gradient(135deg,rgba(245,158,11,0.04),transparent 60%)}.pillar-card-aml:hover{border-left-color:#d97706;background:linear-gradient(135deg,rgba(245,158,11,0.08),transparent 60%)}.pillar-card-markets{border-left:3px solid #16a34a;background:linear-gradient(135deg,rgba(22,163,74,0.04),transparent 60%)}.pillar-card-markets:hover{border-left-color:#15803d;background:linear-gradient(135deg,rgba(22,163,74,0.08),transparent 60%)}.pillar-card-data{border-left:3px solid #6366f1;background:linear-gradient(135deg,rgba(99,102,241,0.04),transparent 60%)}.pillar-card-data:hover{border-left-color:#4f46e5;background:linear-gradient(135deg,rgba(99,102,241,0.08),transparent 60%)}.pillar-bg-data{background-image:linear-gradient(45deg,rgba(99,102,241,0.06) 25%,transparent 25%),linear-gradient(-45deg,rgba(99,102,241,0.06) 25%,transparent 25%),linear-gradient(45deg,transparent 75%,rgba(99,102,241,0.06) 75%),linear-gradient(-45deg,transparent 75%,rgba(99,102,241,0.06) 75%);background-size:32px 32px;background-position:0 0,0 16px,16px -16px,-16px 0px}.search-result[data-pillar="aml"]{border-left:3px solid #f59e0b}.search-result[data-pillar="stock"]{border-left:3px solid #16a34a}.search-result[data-pillar="data-engineering"]{border-left:3px solid #6366f1}.difficulty-badge.beginner{color:#16a34a}.difficulty-badge.intermediate{color:#f59e0b}.difficulty-badge.advanced{color:#ef4444}.stage-icon{display:inline-flex;align-items:center;gap:0.25rem;padding:0.15rem 0.45rem;border-radius:4px;font-size:0.65rem;font-weight:600;text-transform:uppercase;letter-spacing:0.03em}.stage-icon-ingest{background:rgba(99,102,241,0.12);color:#6366f1}.stage-icon-transform{background:rgba(139,92,246,0.12);color:#8b5cf6}.stage-icon-serve{background:rgba(16,185,129,0.12);color:#10b981}.stage-icon-orchestrate{background:rgba(245,158,11,0.12);color:#f59e0b}.settings-panel{position:fixed;top:0;right:-360px;width:320px;height:100vh;height:100dvh;z-index:10000;background:var(--color-bg);border-left:1px solid var(--color-border);box-shadow:-8px 0 32px rgba(0,0,0,0.1);transition:right var(--duration-normal) var(--ease-out-cubic);overflow-y:auto}.settings-panel.open{right:0}.settings-panel-inner{padding:2rem 1.5rem}.settings-close{position:absolute;top:0.75rem;right:0.75rem;width:2rem;height:2rem;display:flex;align-items:center;justify-content:center;border:none;background:var(--color-surface);border-radius:50%;color:var(--color-text-secondary);font-size:1.25rem;cursor:pointer;transition:all var(--duration-fast) var(--ease-out-cubic)}.settings-close:hover{background:var(--color-surface-hover);color:var(--color-text)}.settings-section{margin-bottom:1.5rem}.settings-heading{font-size:0.75rem;font-weight:700;text-transform:uppercase;letter-spacing:0.05em;color:var(--color-text-muted);margin-bottom:0.75rem}.settings-row{display:flex;align-items:center;justify-content:space-between;padding:0.5rem 0;font-size:0.875rem;color:var(--color-text-secondary);cursor:pointer}.settings-row:hover{color:var(--color-text)}.settings-toggle{appearance:none;width:2.25rem;height:1.25rem;border-radius:999px;background:var(--color-border);border:none;cursor:pointer;position:relative;transition:background var(--duration-fast) var(--ease-out-cubic);flex-shrink:0}.settings-toggle::after{content:'';position:absolute;top:0.125rem;left:0.125rem;width:1rem;height:1rem;border-radius:50%;background:#fff;transition:left var(--duration-fast) var(--ease-spring);box-shadow:0 1px 3px rgba(0,0,0,0.2)}.settings-toggle:checked{background:var(--color-accent)}.settings-toggle:checked::after{left:1.125rem}.settings-density{display:flex;gap:0.375rem}.density-btn{flex:1;padding:0.5rem;font-size:0.75rem;font-weight:600;border:1px solid var(--color-border);border-radius:6px;background:var(--color-surface);color:var(--color-text-secondary);cursor:pointer;transition:all var(--duration-fast) var(--ease-out-cubic);font-family:inherit}.density-btn:hover{border-color:var(--color-accent);color:var(--color-text)}.density-btn.active{background:var(--color-accent);border-color:var(--color-accent);color:#fff}@media (max-width:640px){.settings-panel{width:100%;right:-100%}}.settings-hint{font-size:0.75rem;color:var(--color-text-muted);margin:-0.25rem 0 0.5rem}.settings-row-between{justify-content:space-between;gap:1rem;cursor:default}.settings-row-between:hover{color:var(--color-text-secondary)}.settings-mini-btn{padding:0.25rem 0.75rem;font-size:0.75rem;font-weight:600;border:1px solid var(--color-border);border-radius:6px;background:var(--color-surface);color:var(--color-text-secondary);cursor:pointer;transition:all var(--duration-fast) var(--ease-out-cubic);font-family:inherit}.settings-mini-btn:hover{border-color:var(--color-accent);color:var(--color-text)}.settings-mini-btn:active{transform:scale(0.96)}[data-modality="visual"] .concept-map{border-left:3px solid var(--color-accent)}[data-modality="visual"] .visual-abstract{border-left-width:6px}[data-modality="visual"] .va-icon-box{transform:scale(1.15)}[data-modality="verbal"] .visual-abstract{border-left-width:2px}[data-modality="verbal"] .va-icon-box{transform:scale(0.9);opacity:0.6}[data-modality="verbal"] .prose-body{max-width:66ch}.interests-bar{display:flex;flex-wrap:wrap;align-items:center;gap:0.5rem;padding:0.75rem 1rem;margin-bottom:1.5rem;background:color-mix(in srgb,var(--color-accent) 6%,transparent);border:1px solid color-mix(in srgb,var(--color-accent) 20%,transparent);border-radius:10px}.interests-label{font-size:0.75rem;font-weight:600;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:0.04em}.interest-chip{padding:0.25rem 0.65rem;font-size:0.75rem;font-weight:600;border:1px solid var(--color-border);border-radius:999px;background:var(--color-surface);color:var(--color-text-secondary);cursor:pointer;transition:all var(--duration-fast) var(--ease-out-cubic);font-family:inherit}.interest-chip:hover{border-color:var(--color-accent);color:var(--color-text)}.interest-chip.active{background:var(--color-accent);border-color:var(--color-accent);color:#fff}.interest-chip.static{cursor:default}a.interest-chip.static{text-decoration:none}.interest-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:0.5rem;margin:1rem 0}.adaptive-modal{max-width:520px}.adaptive-body{max-height:65vh;overflow-y:auto}.adaptive-note{font-size:0.85rem;color:var(--color-text-muted);margin-bottom:0.75rem}.adaptive-note.warn{color:#ef4444}.adaptive-current{font-weight:600;color:var(--color-accent)}.adaptive-question{padding:0.75rem 0;border-bottom:1px solid var(--color-border)}.adaptive-question:last-of-type{border-bottom:none}.adaptive-question-text{font-size:0.875rem;color:var(--color-text);margin-bottom:0.5rem}.adaptive-options{display:flex;gap:0.375rem;flex-wrap:wrap}.adaptive-actions{display:flex;justify-content:space-between;gap:0.75rem;margin-top:1.25rem}.mini-btn{padding:0.375rem 1rem;font-size:0.8125rem;font-weight:600;border:1px solid var(--color-border);border-radius:8px;background:var(--color-surface);color:var(--color-text-secondary);cursor:pointer;transition:all var(--duration-fast) var(--ease-out-cubic);font-family:inherit}.mini-btn:hover{border-color:var(--color-accent);color:var(--color-text)}.mini-btn.active{background:var(--color-accent);border-color:var(--color-accent);color:#fff}.mini-btn.ghost{border-color:transparent;background:transparent}.mini-btn.primary{background:var(--color-accent);border-color:var(--color-accent);color:#fff}.mini-btn.primary:hover{opacity:0.9}.concept-actions{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:0.75rem}.concept-action.path-active{border-color:var(--color-accent);background:color-mix(in srgb,var(--color-accent) 8%,transparent)}.suggestion-item.suggestion-active{background:color-mix(in srgb,var(--color-accent) 12%,transparent);outline:1px solid color-mix(in srgb,var(--color-accent) 40%,transparent)}.skip-link{position:absolute;top:-100%;left:1rem;padding:0.5rem 1rem;background:var(--color-accent);color:#fff;font-size:0.875rem;font-weight:600;border-radius:0 0 6px 6px;z-index:10000;text-decoration:none;transition:top 0.15s ease}.skip-link:focus{top:0;outline:2px solid var(--color-focus);outline-offset:2px}.nav-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.4);z-index:99;opacity:0;pointer-events:none;transition:opacity 0.3s ease;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.nav-overlay.open{opacity:1;pointer-events:auto}body.nav-open{overflow:hidden}.nav-toggle{display:none;background:var(--color-surface);border:1px solid var(--color-border);border-radius:8px;color:var(--color-text);cursor:pointer;padding:0.5rem;line-height:1;transition:all 0.2s ease;z-index:101}.nav-toggle:hover{border-color:var(--color-accent);color:var(--color-accent)}.nav-toggle[aria-expanded="true"]{background:var(--color-accent);border-color:var(--color-accent);color:#fff}@media (max-width:768px){nav{position:relative}.nav-toggle{display:flex;align-items:center;justify-content:center}nav ul:last-child{position:fixed;top:0;right:-300px;width:280px;height:100vh;height:100dvh;flex-direction:column;align-items:flex-start;list-style:none;padding:4.5rem 1.5rem 2rem;margin:0;gap:0.25rem;background:var(--color-bg);border-left:1px solid var(--color-border);z-index:100;transition:right 0.3s ease;overflow-y:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch;display:flex;box-shadow:-4px 0 24px rgba(0,0,0,0.1)}nav ul:last-child.open{right:0}nav ul:last-child li{width:100%}nav ul:last-child li a{display:block;padding:0.75rem 0.5rem;font-size:1rem;border-radius:8px;min-height:44px;display:flex;align-items:center}nav ul:last-child li a:hover{background:var(--color-surface-hover)}nav ul li a{font-size:0.9rem;padding:0.4rem 0.4rem}nav ul{gap:0.1rem}.nav-empty{display:none}.mode-toggle-sm{padding:0.6rem 0.5rem;width:100%}.mode-toggle-sm select{width:100%;padding:0.5rem 0.75rem;font-size:1rem}}@container card (max-width:240px){.pillar-card .pillar-icon{font-size:1.8rem}.pillar-card .pillar-desc{font-size:0.7rem}.pillar-card .pillar-stat{display:none}}@container card (min-width:400px){.pillar-card .pillar-icon{font-size:3rem}}.card-container{container-type:inline-size;container-name:card}@media print{.no-print{display:none !important}#reading-progress,#scroll-top,.nav-toggle,.feedback-btn{display:none !important}}nav[aria-label="Breadcrumb"] ol{display:flex;align-items:center;gap:0.25rem;list-style:none;margin:0 0 0.75rem;padding:0;font-size:0.8rem}nav[aria-label="Breadcrumb"] li a{color:var(--color-text-muted);text-decoration:none;transition:color 0.15s ease}nav[aria-label="Breadcrumb"] li a:hover{color:var(--color-accent)}nav[aria-label="Breadcrumb"] li[aria-current="page"]{color:var(--color-text-secondary);font-weight:500}@keyframes fadeInUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeInUp 0.5s ease-out both}}.concept-hero{border-radius:1rem;border:1px solid var(--color-border);padding:1.5rem;margin-bottom:1.5rem;position:relative;overflow:hidden}.concept-hero .hero-graph{margin-top:1.25rem;max-width:620px}.concept-hero .dag-svg{display:block}.tab-bar{display:flex;gap:0.25rem;border-bottom:1px solid var(--color-border);overflow-x:auto;scrollbar-width:none}.tab-bar::-webkit-scrollbar{display:none}.tab-btn{padding:0.625rem 1rem;font-size:0.875rem;font-weight:600;color:var(--color-text-secondary);background:none;border:0;border-bottom:2px solid transparent;cursor:pointer;white-space:nowrap;transition:color 0.2s ease}.tab-btn:hover{color:var(--color-text)}.tab-btn.is-active{color:var(--color-accent);border-bottom-color:var(--color-accent)}.tab-btn:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}.js .tab-panel{display:none}.js .tab-panel.is-active{display:block}.tab-panel{padding-top:1.25rem}.chip-bar{display:flex;gap:0.5rem;flex-wrap:wrap;margin-bottom:1rem}.chip-btn{padding:0.3rem 0.75rem;border-radius:999px;font-size:0.75rem;font-weight:600;background:var(--color-surface);border:1px solid var(--color-border);color:var(--color-text-secondary);cursor:pointer;transition:all 0.2s ease}.chip-btn:hover{border-color:var(--color-accent);color:var(--color-text)}.chip-btn.is-active{background:var(--color-accent);color:#fff;border-color:var(--color-accent)}.chip-btn:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}.sandbox-card{padding:1.25rem;margin-bottom:1.5rem}.sandbox-level{font-size:0.7rem;font-weight:700;text-transform:uppercase;letter-spacing:0.05em;padding:0.2rem 0.6rem;border-radius:999px;background:color-mix(in srgb,var(--color-accent) 12%,transparent);color:var(--color-accent)}.sandbox-editor-wrap{border:1px solid var(--color-border);border-radius:0.5rem;overflow:hidden}.sandbox-editor{width:100%;min-height:10rem;padding:0.875rem;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:0.8rem;line-height:1.5;background:var(--color-surface);color:var(--color-text);border:0;resize:vertical;tab-size:2}.sandbox-editor:focus{outline:2px solid var(--color-accent);outline-offset:-2px}.sandbox-hint{margin-top:0.75rem;font-size:0.8rem;padding:0.625rem 0.875rem;border-radius:0.5rem;background:color-mix(in srgb,#f59e0b 8%,transparent);border:1px solid color-mix(in srgb,#f59e0b 30%,transparent)}.sandbox-table{width:100%;font-size:0.8rem;border-collapse:collapse;overflow-x:auto;display:block}.sandbox-table th,.sandbox-table td{padding:0.4rem 0.625rem;border:1px solid var(--color-border);text-align:left;white-space:nowrap}.sandbox-table th{background:var(--color-surface);font-weight:700}.sandbox-msg,.sandbox-feedback{padding:0.625rem 0.875rem;border-radius:0.5rem;font-size:0.8rem}.sandbox-ok{background:color-mix(in srgb,#22c55e 10%,transparent);color:#16a34a}.sandbox-err{background:color-mix(in srgb,#ef4444 10%,transparent);color:#dc2626}.sandbox-output{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:0.78rem;line-height:1.5;padding:0.875rem;border-radius:0.5rem;background:var(--color-surface);border:1px solid var(--color-border);overflow-x:auto;white-space:pre-wrap}.sandbox-input{width:100%;margin-top:0.3rem;padding:0.5rem 0.75rem;border-radius:0.5rem;border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text);font-size:0.85rem}.sandbox-input:focus{outline:2px solid var(--color-accent);outline-offset:-1px}.sandbox-check{display:flex;align-items:flex-start;gap:0.5rem;font-size:0.85rem;padding:0.4rem 0.6rem;border-radius:0.5rem;border:1px solid var(--color-border);cursor:pointer;transition:border-color 0.2s ease}.sandbox-check:hover{border-color:var(--color-accent)}.sandbox-check input{margin-top:0.2rem;accent-color:var(--color-accent)}.sandbox-ok-card{padding:1rem;border-radius:0.75rem;border:1px solid color-mix(in srgb,#22c55e 40%,transparent);background:color-mix(in srgb,#22c55e 8%,transparent)}.sim-step{width:1.75rem;height:1.75rem;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;font-size:0.75rem;font-weight:700;background:var(--color-surface);border:1px solid var(--color-border);color:var(--color-text-secondary)}.sim-step-active{border-color:var(--color-accent);color:var(--color-accent)}.sim-step-done{background:var(--color-accent);color:#fff;border-color:var(--color-accent)}