:root{--brand-primary:#d85a30;--brand-primary-hover:#bf4921;--brand-primary-active:#a53b16;--brand-primary-subtle:#fdf3ef;--brand-primary-border:#f5c4b3;--bg-primary:#fbfbf9;--bg-surface:#fff;--bg-subtle:#f4f4f0;--bg-elevated:#fff;--bg-inverse:#18181b;--text-primary:#18181b;--text-secondary:#52525b;--text-muted:#71717a;--text-inverse:#fff;--border-subtle:#e5e5e0;--border-strong:#d4d4cc;--cat-science:#0d8065;--cat-science-bg:#ebf8f4;--cat-history:#b45309;--cat-history-bg:#fffbeb;--cat-tech:#2563eb;--cat-tech-bg:#eff6ff;--cat-space:#7c3aed;--cat-space-bg:#f5f3ff;--cat-nature:#15803d;--cat-nature-bg:#f0fdf4;--cat-culture:#be185d;--cat-culture-bg:#fdf2f8;--font-serif:"Newsreader","Charter","Georgia",serif;--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--max-content-width:1200px;--reading-width:720px;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-full:9999px;--shadow-sm:0 1px 2px 0 rgba(24,24,27,.04);--shadow-md:0 4px 6px -1px rgba(24,24,27,.06),0 2px 4px -2px rgba(24,24,27,.03);--shadow-lg:0 10px 15px -3px rgba(24,24,27,.08),0 4px 6px -4px rgba(24,24,27,.04);--transition-fast:150ms cubic-bezier(0.4,0,0.2,1);--transition-smooth:250ms cubic-bezier(0.4,0,0.2,1)}*,:after,:before{box-sizing:border-box;margin:0;padding:0}html{font-family:var(--font-sans);color:var(--text-primary);background-color:var(--bg-primary);line-height:1.6;-webkit-text-size-adjust:100%;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;scroll-behavior:smooth}body{min-height:100vh;display:flex;flex-direction:column;overflow-x:hidden;width:100%}.skip-to-content{position:absolute;top:-100px;left:1rem;background:var(--brand-primary);color:var(--text-inverse);padding:.75rem 1.25rem;border-radius:var(--radius-sm);z-index:9999;text-decoration:none;font-weight:600;font-size:.9rem;transition:top var(--transition-fast)}.skip-to-content:focus{top:1rem}.site-container{width:100%;max-width:var(--max-content-width);margin-left:auto;margin-right:auto;padding-left:1rem;padding-right:1rem}@media (min-width:640px){.site-container{padding-left:1.5rem;padding-right:1.5rem}}.reading-container{width:100%;max-width:var(--reading-width);margin-left:auto;margin-right:auto;padding-left:1rem;padding-right:1rem}@media (min-width:640px){.reading-container{padding-left:1.5rem;padding-right:1.5rem}}h1,h2,h3,h4,h5,h6{color:var(--text-primary);font-weight:700;line-height:1.25;letter-spacing:-.02em}.headline-hero{font-family:var(--font-serif);font-size:2rem;line-height:1.2;letter-spacing:-.025em;font-weight:700}@media (min-width:768px){.headline-hero{font-size:3.25rem}}.headline-tile{font-size:1.2rem;font-weight:700;line-height:1.35;letter-spacing:-.015em}.subheadline{font-size:1.05rem;color:var(--text-secondary);line-height:1.5}.site-header{position:-webkit-sticky;position:sticky;top:0;z-index:100;background-color:hsla(60,20%,98%,.96);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--border-subtle);width:100%}.header-inner{justify-content:space-between;height:4.25rem;gap:.5rem}.brand-logo-link,.header-inner{display:flex;align-items:center}.brand-logo-link{gap:.625rem;text-decoration:none;color:var(--text-primary);flex-shrink:0}.brand-icon-img{width:36px;height:36px;display:block;border-radius:var(--radius-sm);flex-shrink:0}.brand-text{font-size:1.5rem;font-weight:800;letter-spacing:-.04em;color:var(--text-primary)}.brand-badge{font-size:.6875rem;text-transform:uppercase;letter-spacing:.08em;background-color:var(--brand-primary-subtle);color:var(--brand-primary);padding:.15rem .45rem;border-radius:var(--radius-sm);font-weight:700;border:1px solid var(--brand-primary-border)}@media (max-width:420px){.brand-badge{display:none}}.header-nav{display:flex;align-items:center;gap:.75rem}@media (min-width:768px){.header-nav{gap:1.25rem}}.nav-link{text-decoration:none;color:var(--text-secondary);font-weight:500;font-size:.9375rem;padding:.5rem .25rem;border-bottom:2px solid transparent;transition:color var(--transition-fast),border-color var(--transition-fast)}.nav-link.active,.nav-link:hover{color:var(--brand-primary);border-color:var(--brand-primary)}.nav-link-pill{display:inline-flex;align-items:center;gap:.375rem;padding:.45rem 1rem;background-color:var(--brand-primary);color:var(--text-inverse)!important;border-radius:var(--radius-full);font-size:.875rem;font-weight:600;text-decoration:none;box-shadow:0 2px 4px rgba(216,90,48,.2);transition:background-color var(--transition-fast),transform var(--transition-fast),box-shadow var(--transition-fast);white-space:nowrap}.nav-link-pill:hover{background-color:var(--brand-primary-hover);transform:translateY(-1px);box-shadow:0 4px 8px rgba(216,90,48,.3)}.category-bar-wrapper{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none;padding:.5rem 0 1rem}.category-bar-wrapper::-webkit-scrollbar{display:none}.category-bar{display:flex;flex-wrap:nowrap;gap:.5rem;align-items:center;width:max-content;min-width:100%;padding-bottom:2px}.category-pill{display:inline-flex;align-items:center;justify-content:center;flex-shrink:0!important;white-space:nowrap!important;padding:.5rem 1.125rem;border-radius:var(--radius-full);font-size:.875rem;font-weight:600;line-height:1;text-decoration:none;border:1px solid var(--border-subtle);background-color:var(--bg-surface);color:var(--text-secondary);transition:all var(--transition-fast);min-height:44px;box-sizing:border-box}.category-pill:hover{border-color:var(--brand-primary-border);color:var(--brand-primary)}.category-pill.active{background-color:var(--brand-primary);color:var(--text-inverse);border-color:var(--brand-primary);box-shadow:0 2px 4px rgba(216,90,48,.2)}.tag{display:inline-flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:700;text-transform:capitalize;letter-spacing:.03em;padding:.25rem .625rem;border-radius:var(--radius-full);text-decoration:none;width:-moz-fit-content;width:fit-content;white-space:nowrap;flex-shrink:0;line-height:1.2}.tag-science{color:var(--cat-science);background-color:var(--cat-science-bg)}.tag-history{color:var(--cat-history);background-color:var(--cat-history-bg)}.tag-tech{color:var(--cat-tech);background-color:var(--cat-tech-bg)}.tag-space{color:var(--cat-space);background-color:var(--cat-space-bg)}.tag-nature{color:var(--cat-nature);background-color:var(--cat-nature-bg)}.tag-culture{color:var(--cat-culture);background-color:var(--cat-culture-bg)}.tag-latest{color:var(--text-inverse);background-color:var(--brand-primary);font-weight:700}.fact-grid{display:grid;grid-template-columns:1fr;grid-gap:1.5rem;gap:1.5rem;margin-top:1.25rem;margin-bottom:3rem}@media (min-width:640px){.fact-grid{grid-template-columns:repeat(2,1fr)}}@media (min-width:1024px){.fact-grid{grid-template-columns:repeat(3,1fr)}}.fact-tile{display:flex;flex-direction:column;background-color:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);overflow:hidden;text-decoration:none;color:inherit;box-shadow:var(--shadow-sm);transition:transform var(--transition-smooth),box-shadow var(--transition-smooth),border-color var(--transition-smooth);position:relative;content-visibility:auto;contain-intrinsic-size:0 420px}.fact-tile:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--brand-primary-border)}.fact-tile-media{position:relative;width:100%;aspect-ratio:3/2;background-color:var(--bg-subtle);overflow:hidden;display:flex;align-items:center;justify-content:center}.fact-tile-media img{width:100%;height:100%;object-fit:contain;object-position:center;transition:transform var(--transition-smooth)}.fact-tile:hover .fact-tile-media img{transform:scale(1.02)}.fact-tile-content{display:flex;flex-direction:column;flex-grow:1;padding:1.25rem;gap:.75rem}.fact-tile-hook{color:var(--text-secondary);font-size:.9375rem;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.fact-tile-footer{margin-top:auto;padding-top:.75rem;border-top:1px solid var(--border-subtle);display:flex;align-items:center;justify-content:space-between;font-size:.8125rem;color:var(--text-muted);font-weight:500}.read-indicator{display:inline-flex;align-items:center;gap:.25rem;color:var(--brand-primary);font-weight:700}.hero-feature-card{background-color:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);margin-bottom:2.5rem;display:grid;grid-template-columns:1fr;transition:border-color var(--transition-smooth),box-shadow var(--transition-smooth)}.hero-feature-card:hover{border-color:var(--brand-primary-border);box-shadow:var(--shadow-lg)}@media (min-width:900px){.hero-feature-card{grid-template-columns:1.15fr 1fr;align-items:stretch}}.hero-feature-media{position:relative;width:100%;aspect-ratio:3/2;background-color:var(--bg-subtle);display:flex;align-items:center;justify-content:center;overflow:hidden}.hero-feature-media img{width:100%;height:100%;object-fit:contain;object-position:center}.hero-feature-body{padding:1.5rem;display:flex;flex-direction:column;justify-content:center;gap:.875rem}@media (min-width:640px){.hero-feature-body{padding:2rem}}.article-header{margin-top:1.5rem;margin-bottom:1.5rem;display:flex;flex-direction:column;gap:.875rem}.article-hero-media{width:100%;aspect-ratio:3/2;border-radius:var(--radius-lg);overflow:hidden;position:relative;margin:1.5rem 0 2rem;box-shadow:var(--shadow-md);background-color:var(--bg-subtle);display:flex;align-items:center;justify-content:center}.article-hero-media img{width:100%;height:100%;object-fit:contain;object-position:center}.core-fact-callout{background-color:var(--brand-primary-subtle);border-left:4px solid var(--brand-primary);border-radius:0 var(--radius-md) var(--radius-md) 0;padding:1.25rem;margin-bottom:2rem;box-shadow:var(--shadow-sm)}@media (min-width:640px){.core-fact-callout{padding:1.5rem}}.core-fact-label{display:inline-flex;align-items:center;gap:.375rem;font-size:.75rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em;color:var(--brand-primary);margin-bottom:.5rem}.core-fact-text{font-family:var(--font-serif);font-size:1.25rem;line-height:1.45;font-weight:600;color:var(--text-primary)}@media (min-width:640px){.core-fact-text{font-size:1.35rem}}.article-body{font-size:1.0625rem;line-height:1.75;color:#27272a}.article-body p{margin-bottom:1.5rem}.article-body h2{font-size:1.5rem;margin-top:2.25rem;margin-bottom:1rem}.article-body h3{font-size:1.2rem;margin-top:1.75rem;margin-bottom:.75rem}.article-body ol,.article-body ul{margin-bottom:1.5rem;padding-left:1.5rem}.article-body li{margin-bottom:.5rem}.source-box{background-color:var(--bg-subtle);border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:1.25rem;margin-top:2.5rem;font-size:.875rem;color:var(--text-secondary)}.source-box strong{color:var(--text-primary)}.share-bar{display:flex;align-items:center;gap:.75rem;padding:1.25rem 0;border-top:1px solid var(--border-subtle);border-bottom:1px solid var(--border-subtle);margin:2rem 0;flex-wrap:wrap}.share-label{color:var(--text-secondary)}.share-btn,.share-label{font-size:.875rem;font-weight:600}.share-btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:44px;min-width:44px;padding:.5rem 1rem;border-radius:var(--radius-md);background-color:var(--bg-surface);border:1px solid var(--border-subtle);color:var(--text-primary);text-decoration:none;cursor:pointer;transition:all var(--transition-fast)}.share-btn:hover{background-color:var(--brand-primary-subtle);border-color:var(--brand-primary-border);color:var(--brand-primary)}.ad-slot-wrapper{margin:2.5rem 0;padding:1rem 0;width:100%;display:flex;flex-direction:column;align-items:center;clear:both}.ad-label{font-size:.6875rem;text-transform:uppercase;letter-spacing:.1em;font-weight:600;margin-bottom:.5rem}.ad-label,.ad-slot-container{color:var(--text-muted);text-align:center}.ad-slot-container{width:100%;max-width:728px;min-height:250px;min-width:280px;background-color:#fafaf9;border:1px dashed var(--border-subtle);border-radius:var(--radius-md);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:1.5rem;font-size:.8125rem}@media (min-width:768px){.ad-slot-container{min-height:280px;min-width:300px}}.cmp-banner{position:fixed;bottom:0;left:0;right:0;z-index:999;background-color:var(--bg-surface);border-top:1px solid var(--border-strong);box-shadow:0 -4px 16px rgba(0,0,0,.08);padding:1.25rem}.cmp-inner{max-width:var(--max-content-width);margin:0 auto;display:flex;flex-direction:column;gap:1rem;align-items:flex-start}@media (min-width:768px){.cmp-inner{flex-direction:row;align-items:center;justify-content:space-between}}.cmp-buttons{display:flex;gap:.75rem;flex-wrap:wrap}.btn-primary{display:inline-flex;align-items:center;justify-content:center;min-height:44px;min-width:44px;padding:.625rem 1.25rem;background-color:var(--brand-primary);color:var(--text-inverse);font-weight:600;font-size:.875rem;border-radius:var(--radius-md);border:none;cursor:pointer;text-decoration:none;box-shadow:0 2px 4px rgba(216,90,48,.2);transition:background-color var(--transition-fast),transform var(--transition-fast),box-shadow var(--transition-fast);white-space:nowrap}.btn-primary:hover{background-color:var(--brand-primary-hover);transform:translateY(-1px);box-shadow:0 4px 8px rgba(216,90,48,.3)}.btn-secondary{display:inline-flex;align-items:center;justify-content:center;min-height:44px;min-width:44px;padding:.625rem 1.25rem;background-color:var(--bg-surface);color:var(--text-primary);font-weight:600;font-size:.875rem;border-radius:var(--radius-md);border:1px solid var(--border-subtle);cursor:pointer;text-decoration:none;transition:all var(--transition-fast);white-space:nowrap}.btn-secondary:hover{background-color:var(--bg-subtle);border-color:var(--border-strong);color:var(--brand-primary)}.trivia-container{background-color:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:1.5rem;box-shadow:var(--shadow-sm);margin:1.5rem 0}@media (min-width:640px){.trivia-container{padding:2rem}}.trivia-nav-pills{display:flex;gap:.375rem;align-items:center;flex-wrap:wrap;margin-bottom:1.25rem}.trivia-nav-pill{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:38px;padding:.25rem .75rem;border-radius:var(--radius-full);font-size:.8125rem;font-weight:700;border:1px solid var(--border-subtle);background-color:var(--bg-subtle);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast)}.trivia-nav-pill:hover{border-color:var(--brand-primary);color:var(--brand-primary);background-color:var(--brand-primary-subtle)}.trivia-nav-pill.active{background-color:var(--brand-primary);color:var(--text-inverse);border-color:var(--brand-primary);box-shadow:0 2px 4px rgba(216,90,48,.25)}.trivia-nav-pill.answered{border-color:var(--brand-primary-border)}.trivia-nav-ellipsis{display:inline-flex;align-items:center;justify-content:center;padding:0 .25rem;font-size:1rem;font-weight:700;color:var(--text-muted);letter-spacing:.1em;-webkit-user-select:none;-moz-user-select:none;user-select:none}.trivia-option-btn{width:100%;text-align:left;min-height:48px;padding:.875rem 1.25rem;border:1px solid var(--border-subtle);border-radius:var(--radius-md);background-color:var(--bg-surface);color:var(--text-primary);font-size:.95rem;font-weight:500;cursor:pointer;margin-bottom:.75rem;transition:all var(--transition-fast);display:flex;align-items:center;justify-content:space-between}.trivia-option-btn:hover:not(:disabled){border-color:var(--brand-primary);background-color:var(--brand-primary-subtle)}.trivia-option-btn.correct{border-color:var(--cat-science);background-color:var(--cat-science-bg);color:var(--cat-science);font-weight:700}.trivia-option-btn.incorrect{border-color:#dc2626;background-color:#fef2f2;color:#dc2626;font-weight:700}.site-footer{margin-top:auto;background-color:var(--bg-surface);border-top:1px solid var(--border-subtle);padding:3rem 0 2rem}.footer-grid{display:grid;grid-template-columns:1fr;grid-gap:2rem;gap:2rem;margin-bottom:2.5rem}@media (min-width:768px){.footer-grid{grid-template-columns:2fr 1fr 1fr}}.footer-heading{font-size:.875rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--text-primary);margin-bottom:1rem}.footer-links{list-style:none;display:flex;flex-direction:column;gap:.625rem}.footer-link{text-decoration:none;color:var(--text-secondary);font-size:.875rem;transition:color var(--transition-fast)}.footer-link:hover{color:var(--brand-primary)}.footer-bottom{padding-top:2rem;border-top:1px solid var(--border-subtle);display:flex;flex-direction:column;gap:1rem;font-size:.8125rem;color:var(--text-muted)}@media (min-width:640px){.footer-bottom{flex-direction:row;justify-content:space-between;align-items:center}}.breadcrumb-nav{display:flex;align-items:center;gap:.5rem;font-size:.875rem;color:var(--text-muted);margin-bottom:1rem;flex-wrap:wrap}.breadcrumb-link{color:var(--text-secondary);text-decoration:none}.breadcrumb-link:hover{color:var(--brand-primary);text-decoration:underline}.breadcrumb-separator{color:var(--border-strong)}.search-bar-wrapper{margin-bottom:2rem;display:flex;flex-direction:column;gap:.875rem}.search-input-group{position:relative;width:100%}.search-input{width:100%;min-height:48px;padding:.75rem 1rem .75rem 2.75rem;font-size:1rem;font-family:inherit;color:var(--text-primary);background-color:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-full);outline:none;transition:all var(--transition-fast);box-shadow:var(--shadow-sm);box-sizing:border-box}.search-input:focus{border-color:var(--brand-primary);box-shadow:0 0 0 3px var(--brand-primary-subtle)}.search-input::placeholder{color:var(--text-muted)}.search-icon{left:1rem;pointer-events:none;display:flex;align-items:center;justify-content:center}.search-clear-btn,.search-icon{position:absolute;top:50%;transform:translateY(-50%);color:var(--text-muted)}.search-clear-btn{right:.75rem;background:none;border:none;cursor:pointer;padding:.25rem .5rem;font-size:.875rem;font-weight:600;border-radius:var(--radius-full)}.search-clear-btn:hover{color:var(--brand-primary)}.search-tags-row{display:flex;gap:.5rem;align-items:center;flex-wrap:wrap}.filter-tag-btn{display:inline-flex;align-items:center;gap:.25rem;padding:.35rem .85rem;border-radius:var(--radius-full);font-size:.8125rem;font-weight:600;border:1px solid var(--border-subtle);background-color:var(--bg-surface);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);line-height:1.2}.filter-tag-btn:hover{border-color:var(--brand-primary);color:var(--brand-primary)}.filter-tag-btn.active{background-color:var(--brand-primary);color:var(--text-inverse);border-color:var(--brand-primary);box-shadow:0 2px 4px rgba(216,90,48,.25)}.search-status-bar{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.25rem;font-size:.9375rem;color:var(--text-secondary);flex-wrap:wrap;gap:.5rem}.load-more-wrapper{display:flex;flex-direction:column;align-items:center;gap:.75rem;margin-top:2rem;margin-bottom:2.5rem}.filter-tag-count{font-size:.6875rem;padding:.1rem .4rem;background-color:rgba(0,0,0,.06);border-radius:var(--radius-full);margin-left:.25rem;font-weight:700}.filter-tag-btn.active .filter-tag-count{background-color:hsla(0,0%,100%,.25);color:var(--text-inverse)}.feed-end-indicator{display:flex;align-items:center;justify-content:center;gap:1rem;margin:3rem 0 2rem;color:var(--text-muted);font-size:.875rem}.feed-end-line{flex-grow:1;height:1px;background-color:var(--border-subtle);max-width:120px}.feed-end-text{font-weight:500;font-size:.8125rem;letter-spacing:.02em}.back-to-top-btn{position:fixed;bottom:2rem;right:2rem;z-index:95;display:flex;align-items:center;gap:.375rem;padding:.625rem 1rem;background-color:var(--bg-surface);color:var(--text-primary);border:1px solid var(--border-subtle);border-radius:var(--radius-full);box-shadow:var(--shadow-lg);font-size:.875rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.back-to-top-btn:hover{background-color:var(--brand-primary);color:var(--text-inverse);border-color:var(--brand-primary);transform:translateY(-2px);box-shadow:0 6px 16px rgba(216,90,48,.3)}