.art-header-inner{max-width:1280px;margin:0 auto;padding:4rem 1.5rem 3rem}@media(min-width:640px){.art-header-inner{padding-left:1.5rem;padding-right:1.5rem}}@media(min-width:1024px){.art-header-inner{padding-left:2rem;padding-right:2rem}}.art-back-link{display:inline-flex;align-items:center;gap:.375rem;font-size:.875rem;font-weight:600;color:#542fab;margin-bottom:2rem;text-decoration:none;font-family:inter,sans-serif;transition:opacity .15s}.art-back-link:hover{opacity:.75;text-decoration:underline}.art-meta{display:flex;flex-wrap:wrap;align-items:center;gap:.625rem;margin-bottom:1rem}.art-category-badge{display:inline-block;padding:.2rem .75rem;background:#ede9fe;color:#4c1d95;font-size:.65rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;border-radius:9999px;font-family:inter,sans-serif}.art-date{font-size:.875rem;color:rgba(30,26,58,.5);font-family:inter,sans-serif}.art-title{font-size:clamp(1.75rem,3.5vw,2.5rem);font-weight:800;color:#1e1a3a;line-height:1.25;margin-bottom:1rem;font-family:plus jakarta sans,sans-serif}.art-description{font-size:1.125rem;color:rgba(30,26,58,.7);line-height:1.7;max-width:720px;margin-bottom:0;font-family:inter,sans-serif}.art-share{display:flex;flex-wrap:wrap;align-items:center;gap:.625rem;margin-top:1.75rem}.art-share--bottom{margin-top:3rem;padding-top:2rem;border-top:1px solid #dde1e8}.art-share-label{font-size:.75rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:rgba(30,26,58,.45);font-family:inter,sans-serif;margin-right:.25rem}.art-share-btn{display:inline-flex;align-items:center;gap:.4rem;padding:.45rem .875rem;border-radius:.625rem;font-size:.8125rem;font-weight:600;font-family:inter,sans-serif;text-decoration:none;border:1.5px solid transparent;cursor:pointer;background:0 0;transition:background .15s,border-color .15s,color .15s,transform .1s;line-height:1}.art-share-btn:active{transform:scale(.96)}.art-share-linkedin{color:#542fab;border-color:rgba(84,47,171,.25);background:rgba(84,47,171,5%)}.art-share-linkedin:hover{background:#542fab;border-color:#542fab;color:#fff}.art-share-twitter{color:#1e1a3a;border-color:rgba(30,26,58,.2);background:rgba(30,26,58,4%)}.art-share-twitter:hover{background:#1e1a3a;border-color:#1e1a3a;color:#fff}.art-share-copy{color:#542fab;border-color:rgba(84,47,171,.22);background:rgba(84,47,171,5%)}.art-share-copy:hover{background:#542fab;border-color:#542fab;color:#fff}.art-share-copy.copied{background:#16a34a;border-color:#16a34a;color:#fff}.art-layout{max-width:1280px;margin:0 auto;padding:3.5rem 1.5rem 4rem;display:grid;grid-template-columns:1fr;gap:2.5rem;align-items:start}@media(min-width:1024px){.art-layout{grid-template-columns:1fr 260px;gap:4rem;padding:4rem 2rem 5rem}}@media(min-width:1280px){.art-layout{grid-template-columns:1fr 280px}}.art-main{min-width:0}.art-sidebar{display:none}@media(min-width:1024px){.art-sidebar{display:block;position:sticky;top:5.5rem;max-height:calc(100vh - 6rem);overflow-y:auto;scrollbar-width:none}.art-sidebar::-webkit-scrollbar{display:none}}.art-toc{background:#f5f6f8;border:1px solid #dde1e8;border-radius:1rem;padding:1.25rem 1.25rem 1rem}.art-toc-heading{display:flex;align-items:center;gap:.4rem;font-size:.7rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:rgba(30,26,58,.5);margin:0 0 .875rem;font-family:inter,sans-serif}.art-toc-nav{display:flex;flex-direction:column;gap:.125rem}.art-toc-link{display:block;font-size:.8125rem;color:rgba(30,26,58,.6);text-decoration:none;padding:.3rem .5rem;border-radius:.375rem;border-left:2px solid transparent;transition:color .15s,background .15s,border-color .15s;line-height:1.45;font-family:inter,sans-serif}.art-toc-link:hover{color:#542fab;background:rgba(84,47,171,5%)}.art-toc-link.toc-h3{padding-left:1.25rem;font-size:.78rem}.art-toc-link.is-active{color:#542fab;background:rgba(84,47,171,8%);border-left-color:#542fab;font-weight:600}.art-toc-mobile{display:block;margin-bottom:2rem;border:1px solid #dde1e8;border-radius:.875rem;overflow:hidden;background:#f5f6f8}@media(min-width:1024px){.art-toc-mobile{display:none}}.art-toc-mobile-toggle{width:100%;display:flex;align-items:center;justify-content:space-between;padding:.875rem 1rem;background:0 0;border:none;cursor:pointer;font-family:inter,sans-serif}.art-toc-mobile-title{display:flex;align-items:center;gap:.4rem;font-size:.8125rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:rgba(30,26,58,.55)}.art-toc-mobile-chevron{color:rgba(30,26,58,.4);transition:transform .25s ease;flex-shrink:0}.art-toc-mobile-toggle[aria-expanded=true] .art-toc-mobile-chevron{transform:rotate(180deg)}.art-toc-mobile-nav{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 1rem;display:flex;flex-direction:column;gap:.125rem}.art-toc-mobile-nav.open{padding-bottom:.875rem}.art-toc-mobile-nav .art-toc-link{font-size:.875rem}#art-progress{position:fixed;top:0;left:0;width:0%;height:3px;background:linear-gradient(90deg,#542fab,#7c5ccd);z-index:9999;transition:width .1s linear;pointer-events:none}