.learn-index{max-width:1200px;margin:0 auto;padding:var(--space-2xl, 48px) var(--space-lg, 24px) var(--space-3xl, 64px)}.learn-index__header{margin-bottom:var(--space-2xl, 48px)}.learn-index__header h1{font-family:var(--font-heading, "Orbitron", sans-serif);font-size:2rem;font-weight:700;color:var(--text-primary, #e0e0e0);line-height:var(--line-height-tight, 1.3);margin:0 0 var(--space-sm, 8px)}.learn-index__header p{font-family:var(--font-primary, "Exo 2", sans-serif);font-size:.95rem;color:var(--text-secondary, #888888);line-height:var(--line-height-normal, 1.5);margin:0}.learn-featured{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-xl, 32px);align-items:center;background:var(--bg-surface, #0e0e0e);border:1px solid var(--border-default, #1e1e1e);border-radius:12px;overflow:hidden;margin-bottom:var(--space-xl, 32px);box-shadow:var(--shadow-card, 0 4px 16px rgba(0, 0, 0, .5))}.learn-featured__media{position:relative;aspect-ratio:16 / 9;overflow:hidden;background:linear-gradient(135deg,var(--bg-raised, #141414) 0%,#1a1a1a 100%)}.learn-featured__media:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 30% 30%,var(--cat-glow),transparent 55%);pointer-events:none}.learn-featured__media:after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);background-size:18px 18px;pointer-events:none}.learn-featured__media img{position:relative;width:100%;height:100%;object-fit:cover;display:block;z-index:1;transition:transform .3s ease}.learn-featured:hover .learn-featured__media img{transform:scale(1.03)}.learn-featured__body{padding:var(--space-xl, 32px);display:flex;flex-direction:column;gap:var(--space-md, 16px)}.learn-featured__flag{font-family:var(--font-heading, "Orbitron", sans-serif);font-size:.6rem;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--cat-color, var(--accent, #ff1e1e));background:#ff1e1e1f;border:1px solid rgba(255,30,30,.25);border-radius:99px;padding:3px 12px;display:inline-block;width:fit-content}.learn-featured__title{font-family:var(--font-heading, "Orbitron", sans-serif);font-size:1.35rem;font-weight:700;color:var(--text-primary, #e0e0e0);line-height:var(--line-height-tight, 1.3);margin:0}.learn-featured__title a{color:inherit;text-decoration:none;transition:color .15s}.learn-featured__title a:hover{color:var(--accent-hover, #ff6b6b)}.learn-featured__summary{font-family:var(--font-primary, "Exo 2", sans-serif);font-size:.9rem;color:var(--text-secondary, #888888);line-height:var(--line-height-relaxed, 1.6);margin:0}.learn-filter{display:grid;gap:.85rem;margin-bottom:var(--space-xl, 32px)}.learn-filter__group{display:flex;align-items:center;flex-wrap:wrap;gap:.5rem}.learn-filter__group-label{font-family:var(--font-mono, "Space Mono", monospace);font-size:.6rem;color:var(--text-dim, #555555);text-transform:uppercase;letter-spacing:.12em;margin-right:.5rem;min-width:64px;flex-shrink:0}.learn-filter__chip{font-family:var(--font-primary, "Exo 2", sans-serif);font-weight:600;background:transparent;border:1px solid var(--border-default, #1e1e1e);border-radius:99px;cursor:pointer;line-height:1.5;white-space:nowrap;display:inline-flex;align-items:center;gap:.4rem;transition:color .15s,border-color .15s,background .15s}.learn-filter__chip--cat{font-size:.78rem;padding:4px 12px;color:var(--text-secondary, #888888)}.learn-filter__count{font-family:var(--font-mono, "Space Mono", monospace);font-size:.62rem;color:var(--text-dim, #555555);background:#ffffff0a;padding:1px 5px;border-radius:99px;min-width:14px;text-align:center}.learn-filter__chip--cat[data-category=History]{color:#d4a017;border-color:#d4a0174d}.learn-filter__chip--cat[data-category=Technology]{color:#4a8de0;border-color:#4a8de04d}.learn-filter__chip--cat[data-category=Ecosystem]{color:#5db075;border-color:#5db0754d}.learn-filter__chip--cat[data-category=Investigation]{color:#ff1e1e;border-color:#ff1e1e4d}.learn-filter__chip--cat[data-category=all]{color:var(--text-secondary, #b0b0b0);border-color:var(--border-strong, #2a2a2a)}.learn-filter__chip--cat[aria-pressed=true][data-category=all]{color:var(--text-primary, #e0e0e0);border-color:var(--text-primary, #e0e0e0);background:#ffffff0d}.learn-filter__chip--cat[aria-pressed=true][data-category=History]{background:#d4a0171f;border-color:#d4a01799}.learn-filter__chip--cat[aria-pressed=true][data-category=Technology]{background:#4a8de01f;border-color:#4a8de099}.learn-filter__chip--cat[aria-pressed=true][data-category=Ecosystem]{background:#5db0751f;border-color:#5db07599}.learn-filter__chip--cat[aria-pressed=true][data-category=Investigation]{background:#ff1e1e1f;border-color:#ff1e1e99}.learn-filter__chip--cat[aria-pressed=false]:hover{border-color:var(--border-strong, #2a2a2a);background:#ffffff05}.learn-filter__chip--tag{font-size:.7rem;padding:3px 9px;color:var(--text-muted, #888888);border-style:dashed}.learn-filter__chip--tag:before{content:"#";color:var(--text-dim, #555555);margin-right:1px}.learn-filter__chip--tag:hover{color:var(--text-primary, #e0e0e0);border-color:var(--border-strong, #2a2a2a);background:#ffffff05}.learn-filter__chip--tag[aria-pressed=true]{color:var(--text-primary, #e0e0e0);border:1px solid var(--border-strong, #2a2a2a);background:#ffffff0d}@media(max-width:600px){.learn-filter__group-label{min-width:100%;margin-right:0;margin-bottom:.1rem}.learn-filter__chip--cat{font-size:.72rem;padding:3px 10px}.learn-filter__chip--tag{font-size:.65rem;padding:2px 8px}}.learn-filter__show-more{font-family:var(--font-mono, "Space Mono", monospace);font-size:.6rem;color:var(--text-secondary, #888);background:transparent;border:1px dotted var(--border-strong, #2a2a2a);padding:2px 9px;border-radius:99px;letter-spacing:.06em;cursor:pointer;transition:color .15s,border-color .15s,background .15s;line-height:1.5;white-space:nowrap}.learn-filter__show-more:hover{color:var(--accent, #ff1e1e);border-color:var(--accent, #ff1e1e);background:#ff1e1e0d}.learn-filter__hidden-tags{display:contents}.learn-filter__hidden-tags[hidden]{display:none}.learn-card,.learn-featured{--cat-color: var(--accent, #ff1e1e);--cat-glow: rgba(255, 30, 30, .2)}.learn-card[data-category=History],.learn-featured[data-category=History]{--cat-color: #d4a017;--cat-glow: rgba(212, 160, 23, .2)}.learn-card[data-category=Technology],.learn-featured[data-category=Technology]{--cat-color: #4a8de0;--cat-glow: rgba(74, 141, 224, .2)}.learn-card[data-category=Ecosystem],.learn-featured[data-category=Ecosystem]{--cat-color: #5db075;--cat-glow: rgba(93, 176, 117, .2)}.learn-card[data-category=Investigation],.learn-featured[data-category=Investigation]{--cat-color: #ff1e1e;--cat-glow: rgba(255, 30, 30, .2)}.learn-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--space-xl, 32px)}.learn-grid__empty{grid-column:1 / -1;text-align:center;padding:var(--space-2xl, 48px) 0;color:var(--text-muted, #555555);font-size:.9rem;font-style:italic}.learn-card{display:flex;flex-direction:column;background:var(--bg-surface, #0e0e0e);border:1px solid var(--border-default, #1e1e1e);border-radius:10px;overflow:hidden;text-decoration:none;box-shadow:var(--shadow-subtle, 0 1px 4px rgba(0, 0, 0, .4));transition:border-color .2s,transform .2s,box-shadow .2s}.learn-card[hidden]{display:none}.learn-card:hover{border-color:var(--accent, #ff1e1e);transform:translateY(-2px);box-shadow:var(--shadow-card, 0 4px 16px rgba(0, 0, 0, .5)),0 0 1px #ff1e1e66}.learn-card__media{position:relative;aspect-ratio:16 / 9;width:100%;overflow:hidden;border-bottom:1px solid var(--border-default, #1e1e1e);background:linear-gradient(135deg,var(--bg-raised, #141414) 0%,#1a1a1a 100%)}.learn-card__media:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 30% 30%,var(--cat-glow),transparent 55%);pointer-events:none}.learn-card__media:after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);background-size:18px 18px;pointer-events:none}.learn-card__media img,.learn-card__cover{position:relative;width:100%;height:100%;object-fit:cover;display:block;z-index:1}.learn-card__body{flex:1;display:flex;flex-direction:column;gap:var(--space-xs, 4px);padding:var(--space-md, 16px)}.learn-card__category{font-family:var(--font-heading, "Orbitron", sans-serif);font-size:.55rem;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--cat-color, var(--accent, #ff1e1e));margin:0 0 var(--space-xs, 4px)}.learn-card__title{font-family:var(--font-heading, "Orbitron", sans-serif);font-size:.9rem;font-weight:700;color:var(--text-primary, #e0e0e0);line-height:var(--line-height-tight, 1.3);margin:0 0 var(--space-xs, 4px);transition:color .15s}.learn-card:hover .learn-card__title{color:var(--accent-hover, #ff6b6b)}.learn-card__summary{font-family:var(--font-primary, "Exo 2", sans-serif);font-size:.8rem;color:var(--text-secondary, #888888);line-height:var(--line-height-relaxed, 1.6);margin:0 0 auto;flex:1}.learn-card__meta{font-family:var(--font-mono, "Space Mono", monospace);font-size:.65rem;color:var(--text-muted, #555555);margin:var(--space-sm, 8px) 0 0;line-height:var(--line-height-mono, 1.4)}.learn-article{max-width:1100px;margin:0 auto;padding:var(--space-2xl, 48px) var(--space-lg, 24px) var(--space-3xl, 64px)}.learn-article__back{display:inline-block;font-family:var(--font-primary, "Exo 2", sans-serif);font-size:.75rem;font-weight:600;letter-spacing:.5px;color:var(--text-secondary, #888888);text-decoration:none;margin-bottom:var(--space-xl, 32px);transition:color .15s}.learn-article__back:hover{color:var(--accent, #ff1e1e)}.learn-article__cover{width:100%;max-height:380px;object-fit:cover;border-radius:10px;display:block;margin-bottom:var(--space-xl, 32px);background:var(--bg-raised, #141414)}.learn-article__category{font-family:var(--font-heading, "Orbitron", sans-serif);font-size:.6rem;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--accent, #ff1e1e);margin:0 0 var(--space-sm, 8px)}.learn-article__title{font-family:var(--font-heading, "Orbitron", sans-serif);font-size:1.75rem;font-weight:700;color:var(--text-primary, #e0e0e0);line-height:var(--line-height-tight, 1.3);margin:0 0 var(--space-md, 16px)}.learn-article__meta{font-family:var(--font-mono, "Space Mono", monospace);font-size:.78rem;color:var(--text-muted, #888);margin:0 0 .75rem;line-height:1.6}.learn-article__key{color:var(--text-dim, #555);text-transform:uppercase;letter-spacing:.05em;margin-right:.5rem}.learn-article__val{color:var(--text-secondary, #b0b0b0)}.learn-article__sep{margin:0 .6rem;color:var(--border-strong, #2a2a2a)}.learn-article__tags{display:flex;flex-wrap:wrap;gap:var(--space-xs, 4px);margin-bottom:var(--space-xl, 32px)}.learn-tag{font-family:var(--font-primary, "Exo 2", sans-serif);font-size:.7rem;font-weight:600;color:var(--text-secondary, #888888);background:var(--bg-raised, #141414);border:1px solid var(--border-default, #1e1e1e);border-radius:99px;padding:3px 12px;text-decoration:none;transition:color .15s,border-color .15s}.learn-tag:hover{color:var(--accent, #ff1e1e);border-color:var(--accent, #ff1e1e)}.learn-article__layout{display:grid;grid-template-columns:220px 1fr;gap:var(--space-2xl, 48px);align-items:start}.learn-toc{position:sticky;top:1.5rem;align-self:start}.learn-toc:empty{display:none}.learn-toc__nav{border-left:1px solid var(--border-default, #1e1e1e);padding:0}.learn-toc__title{font-family:var(--font-mono, "Space Mono", monospace);text-transform:uppercase;letter-spacing:.08em;font-size:.65rem;color:var(--text-muted, #888);margin:0 0 .5rem;padding-left:1.25rem}.learn-toc__list{list-style:none;margin:0;padding:0}.learn-toc__item{position:relative}.learn-toc__item a{display:block;padding:.35rem 0 .35rem 1.25rem;font-size:.85rem;color:var(--text-muted, #888);text-decoration:none;position:relative;transition:color .15s}.learn-toc__item a:before{content:"";position:absolute;left:-3px;top:50%;transform:translateY(-50%);width:5px;height:5px;border-radius:50%;background:var(--border-strong, #2a2a2a);transition:background .15s,transform .15s,box-shadow .15s}.learn-toc__item a:hover{color:var(--text-primary, #e0e0e0)}.learn-toc__item a:hover:before{background:var(--text-muted, #888)}.learn-toc__item--h3 a{padding-left:2.25rem;font-size:.8rem}.learn-toc__item--active a{color:var(--accent, #ff1e1e)}.learn-toc__item--active a:before{background:var(--accent, #ff1e1e);transform:translateY(-50%) scale(1.4);box-shadow:0 0 8px #ff1e1e99}.learn-article__body{font-family:var(--font-primary, "Exo 2", sans-serif);font-size:1rem;color:var(--text-primary, #e0e0e0);line-height:1.7;min-width:0}.learn-article__body h2{font-family:var(--font-heading, "Orbitron", sans-serif);font-size:1.35rem;font-weight:700;color:var(--text-primary, #e0e0e0);line-height:1.25;margin:var(--space-2xl, 48px) 0 var(--space-md, 16px);padding-bottom:var(--space-sm, 8px);border-bottom:1px solid var(--border-default, #1e1e1e)}.learn-article__body h2:first-child{margin-top:0}.learn-article__body h3{font-family:var(--font-primary, "Exo 2", sans-serif);font-size:1.05rem;font-weight:600;color:var(--text-primary, #e0e0e0);line-height:1.35;margin:var(--space-xl, 32px) 0 var(--space-sm, 8px);text-transform:none;letter-spacing:0}.learn-article__body p{margin:0 0 1.15rem}.learn-article__body p:last-child{margin-bottom:0}.learn-article__body ul,.learn-article__body ol{padding-left:1.5rem;margin:0 0 1.15rem}.learn-article__body li{margin-bottom:.35rem}.learn-article__body li::marker{color:var(--accent, #ff1e1e)}.learn-article__body li>ul,.learn-article__body li>ol{margin-top:.35rem;margin-bottom:.35rem}.learn-article__body blockquote{margin:var(--space-lg, 24px) 0;padding:var(--space-xs, 4px) 0 var(--space-xs, 4px) var(--space-md, 20px);border-left:3px solid var(--accent, #ff1e1e);color:var(--text-secondary, #b0b0b0)}.learn-article__body blockquote p:last-child{margin-bottom:0}.learn-article__body code{font-family:var(--font-mono, "Space Mono", monospace);font-size:.85em;background:#ffffff0a;padding:1px 6px;border-radius:4px;color:#d4a017}.learn-article__body pre{background:var(--bg-raised, #141414);border:1px solid var(--border-default, #1e1e1e);border-radius:6px;padding:.85rem 1rem;overflow-x:auto;margin:var(--space-lg, 24px) 0;font-size:.85rem;line-height:1.5}.learn-article__body pre code{background:transparent;border:0;padding:0;border-radius:0;color:var(--text-primary, #e0e0e0);font-size:inherit}.learn-article__body strong{color:var(--text-primary, #e0e0e0);font-weight:700}.learn-article__body em{color:var(--text-secondary, #b0b0b0);font-style:italic}.learn-article__body img{max-width:100%;border-radius:8px;display:block;margin:var(--space-lg, 24px) auto;border:1px solid var(--border-default, #1e1e1e)}.learn-article__body figure{margin:var(--space-lg, 24px) 0}.learn-article__body figure img{margin:0 auto}.learn-article__body figcaption{font-family:var(--font-mono, "Space Mono", monospace);font-size:.7rem;color:var(--text-muted, #888);text-align:center;margin-top:.5rem;letter-spacing:.02em}.learn-article__body a{color:var(--text-primary, #e0e0e0);text-decoration:underline;text-decoration-color:#ff1e1e73;text-decoration-thickness:1.5px;text-underline-offset:3px;transition:color .15s,text-decoration-color .15s}.learn-article__body a:hover{color:var(--accent, #ff1e1e);text-decoration-color:var(--accent, #ff1e1e)}.learn-article__body hr{border:0;border-top:1px solid var(--border-default, #1e1e1e);margin:var(--space-2xl, 48px) auto;max-width:40%}.learn-article__body .learn-callout{margin:var(--space-lg, 24px) 0;padding:.85rem 1.1rem;border-radius:8px;border:1px solid var(--cl-border, var(--border-default, #1e1e1e));background:var(--cl-bg, var(--bg-raised, #141414));border-left:3px solid var(--cl-accent, var(--accent, #ff1e1e))}.learn-article__body .learn-callout__head{font-family:var(--font-mono, "Space Mono", monospace);font-size:.62rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--cl-accent, var(--accent, #ff1e1e));margin:0 0 .4rem;display:flex;align-items:center;gap:.4rem}.learn-article__body .learn-callout p{margin:0 0 .6rem;font-size:.92rem;line-height:1.6;color:var(--text-secondary, #b0b0b0)}.learn-article__body .learn-callout p:last-child{margin-bottom:0}.learn-article__body .learn-callout a{color:var(--text-primary, #e0e0e0)}.learn-article__body .learn-callout--note{--cl-accent: #4a8de0;--cl-border: rgba(74, 141, 224, .25);--cl-bg: rgba(74, 141, 224, .04)}.learn-article__body .learn-callout--warning{--cl-accent: #ff4d4d;--cl-border: rgba(255, 77, 77, .3);--cl-bg: rgba(255, 77, 77, .05)}.learn-article__body .learn-callout--tip{--cl-accent: #5db075;--cl-border: rgba(93, 176, 117, .25);--cl-bg: rgba(93, 176, 117, .04)}.learn-article__body .learn-callout--source{--cl-accent: #d4a017;--cl-border: rgba(212, 160, 23, .25);--cl-bg: rgba(212, 160, 23, .04)}.learn-article__body .learn-pullquote{margin:var(--space-xl, 32px) -1rem;padding:1.25rem 1.5rem;text-align:center;font-family:var(--font-primary, "Exo 2", sans-serif);font-size:1.25rem;font-style:italic;color:var(--text-primary, #e0e0e0);line-height:1.4;border-top:1px solid var(--border-strong, #2a2a2a);border-bottom:1px solid var(--border-strong, #2a2a2a)}.learn-article__body .learn-pullquote p{margin:0}.learn-article__body .learn-pullquote__body:before,.learn-article__body .learn-pullquote__body:after{color:var(--accent, #ff1e1e);font-family:var(--font-heading, "Orbitron", sans-serif);font-size:2.5rem;line-height:.6;opacity:.5;vertical-align:-.3em}.learn-article__body .learn-pullquote__body:before{content:"“";margin-right:.4rem}.learn-article__body .learn-pullquote__body:after{content:"”";margin-left:0}.learn-article__body .learn-pullquote cite{display:block;margin-top:.6rem;font-style:normal;font-size:.7rem;color:var(--text-muted, #888);font-family:var(--font-mono, "Space Mono", monospace);letter-spacing:.05em;text-transform:uppercase}.learn-article__body{counter-reset:learn-fig}.learn-article__body figure{counter-increment:learn-fig}.learn-article__body figcaption{text-align:left;display:flex;align-items:baseline;gap:.6rem;margin-top:.6rem;font-family:var(--font-mono, "Space Mono", monospace);font-size:.7rem;color:var(--text-muted, #888);line-height:1.5;letter-spacing:.02em}.learn-article__body figcaption:before{content:"FIG " counter(learn-fig) ".";color:var(--text-dim, #555);font-weight:700;text-transform:uppercase;letter-spacing:.08em;flex-shrink:0}@media(max-width:760px){.learn-article__body .learn-pullquote{font-size:1.1rem;margin-left:-.5rem;margin-right:-.5rem;padding:1rem}.learn-article__body .learn-pullquote__body:before,.learn-article__body .learn-pullquote__body:after{font-size:2rem}.learn-article__body .learn-callout{padding:.75rem .85rem}}.learn-article__footer{margin-top:var(--space-3xl, 64px);padding-top:var(--space-xl, 32px);border-top:1px solid var(--border-default, #1e1e1e)}.learn-share{display:flex;align-items:center;justify-content:space-between;gap:var(--space-md, 16px);padding:1rem 1.25rem;background:var(--bg-surface, #0e0e0e);border:1px solid var(--border-default, #1e1e1e);border-radius:8px;margin-bottom:var(--space-2xl, 48px)}.learn-share__prompt{font-family:var(--font-mono, "Space Mono", monospace);font-size:.65rem;color:var(--text-dim, #555);text-transform:uppercase;letter-spacing:.1em;flex-shrink:0}.learn-share__btns{display:flex;align-items:center;gap:.5rem}.learn-share__btn{display:inline-flex;align-items:center;gap:.4rem;padding:6px 13px;font-family:var(--font-primary, "Exo 2", sans-serif);font-size:.7rem;font-weight:600;border:1px solid var(--border-strong, #2a2a2a);border-radius:6px;background:transparent;text-decoration:none;cursor:pointer;transition:color .15s,border-color .15s,background .15s}.learn-share__icon{width:14px;height:14px;flex-shrink:0}.learn-share__btn[data-svc=x]{background:#000;color:#fff;border-color:#000}.learn-share__btn[data-svc=x]:hover{background:#111;border-color:#333}.learn-share__btn[data-svc=tg]{background:#08c;color:#fff;border-color:#08c}.learn-share__btn[data-svc=tg]:hover{background:#0077b3;border-color:#0077b3}.learn-share__btn[data-svc=copy]{color:var(--text-muted, #888)}.learn-share__btn[data-svc=copy]:hover{color:var(--accent, #ff1e1e);border-color:var(--accent, #ff1e1e);background:#ff1e1e0f}.learn-related__header{display:flex;justify-content:space-between;align-items:center;margin:0 0 var(--space-md, 16px);padding-bottom:var(--space-sm, 8px);border-bottom:1px solid var(--border-default, #1e1e1e)}.learn-related__title{font-family:var(--font-mono, "Space Mono", monospace);font-size:.65rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--text-dim, #555);margin:0}.learn-related__more{font-family:var(--font-primary, "Exo 2", sans-serif);font-size:.7rem;color:var(--text-secondary, #b0b0b0);text-decoration:none;border-bottom:1px dotted var(--border-strong, #2a2a2a);transition:color .15s,border-color .15s}.learn-related__more:hover{color:var(--accent, #ff1e1e);border-bottom-color:var(--accent, #ff1e1e)}.learn-related__grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:var(--space-md, 16px)}.learn-related__item{background:var(--bg-primary, #080808);border:1px solid var(--border-default, #1e1e1e);border-radius:8px;padding:.85rem;display:flex;flex-direction:column;gap:.35rem;text-decoration:none;color:var(--text-primary, #e0e0e0);transition:border-color .15s,transform .15s,box-shadow .15s}.learn-related__item:hover{border-color:var(--accent, #ff1e1e);transform:translateY(-2px);box-shadow:0 4px 12px #0006,0 0 1px #ff1e1e4d}.learn-related__item-cat{font-family:var(--font-primary, "Exo 2", sans-serif);font-size:.6rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;margin:0;color:var(--accent, #ff1e1e)}.learn-related__item[data-category=History] .learn-related__item-cat{color:#d4a017}.learn-related__item[data-category=Technology] .learn-related__item-cat{color:#4a8de0}.learn-related__item[data-category=Ecosystem] .learn-related__item-cat{color:#5db075}.learn-related__item[data-category=Investigation] .learn-related__item-cat{color:#ff1e1e}.learn-related__item-title{font-family:var(--font-heading, "Orbitron", sans-serif);font-size:.78rem;font-weight:700;line-height:1.3;margin:0;color:var(--text-primary, #e0e0e0)}.learn-related__item-meta{font-family:var(--font-mono, "Space Mono", monospace);font-size:.58rem;color:var(--text-dim, #555);margin:0}@media(max-width:760px){.learn-index{padding:var(--space-xl, 32px) var(--space-md, 16px) var(--space-2xl, 48px)}.learn-index__header h1{font-size:1.5rem}.learn-featured{grid-template-columns:1fr}.learn-featured__media{max-height:200px}.learn-featured__media img{height:200px}.learn-featured__body{padding:var(--space-lg, 24px)}.learn-featured__title{font-size:1.1rem}.learn-article{padding:var(--space-xl, 32px) var(--space-md, 16px) var(--space-2xl, 48px)}.learn-article__title{font-size:1.35rem}.learn-article__cover{max-height:220px}.learn-article__layout{grid-template-columns:1fr;gap:var(--space-xl, 32px)}.learn-toc{position:static;border-bottom:1px solid var(--border-default, #1e1e1e);padding-bottom:var(--space-lg, 24px)}.learn-share{flex-direction:column;align-items:flex-start;gap:.6rem}.learn-share__btns{flex-wrap:wrap}.learn-related__header{flex-direction:column;align-items:flex-start;gap:.4rem}.learn-related__grid{grid-template-columns:1fr}.learn-article__body{font-size:.95rem}.learn-article__body h2{font-size:1.2rem;margin-top:var(--space-xl, 32px)}.learn-article__body h3{font-size:1rem}}.learn-article__body .learn-live{margin:var(--space-lg, 24px) 0;padding:.85rem 1.1rem;border:1px solid color-mix(in srgb,#28d17c 45%,transparent);border-radius:8px;background:color-mix(in srgb,#28d17c 6%,transparent)}.learn-article__body .learn-live__head{display:flex;align-items:center;gap:.4rem;font-family:var(--font-mono, "Space Mono", monospace);font-size:.62rem;letter-spacing:.12em;font-weight:700;color:var(--text-secondary, #888888);text-transform:uppercase}.learn-article__body .learn-live__pulse{width:7px;height:7px;border-radius:50%;background:#28d17c;box-shadow:0 0 #28d17c99;animation:learnLivePulse 2s infinite;flex:none}.learn-article__body .learn-live__value{margin-top:.4rem;font-size:2rem;font-weight:700;line-height:1.1;color:var(--text-primary, #e0e0e0);font-variant-numeric:tabular-nums}.learn-article__body .learn-live__asof{margin-top:.25rem;font-size:.75rem;color:var(--text-muted, #888)}@keyframes learnLivePulse{0%{box-shadow:0 0 #28d17c99}70%{box-shadow:0 0 0 7px #28d17c00}to{box-shadow:0 0 #28d17c00}}@media(prefers-reduced-motion:reduce){.learn-article__body .learn-live__pulse{animation:none}}