.ov-bs-page{padding:0 0 4rem}.study-bar{border-bottom:1px solid var(--color-border);background:var(--color-bg);position:sticky;top:0;z-index:50}.study-bar .container{max-width:1200px}.study-bar-links{display:flex;justify-content:center;gap:0;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}.study-bar-links::-webkit-scrollbar{display:none}.sb-link{padding:.75rem 1.1rem;font-size:.8rem;font-weight:600;letter-spacing:.03em;color:var(--color-text-muted);text-decoration:none;white-space:nowrap;border-bottom:2px solid transparent;transition:color .18s ease,border-color .18s ease}.sb-link:hover{color:var(--color-text)}.sb-active{color:var(--color-accent);border-bottom-color:var(--color-accent)}.ov-bs-hero{position:relative;min-height:55vh;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;text-align:center;overflow:hidden;padding:6rem 1.5rem 4rem}.ov-bs-hero-bg{position:absolute;inset:0;background:radial-gradient(ellipse at 50% 30%,rgba(234,183,0,.08) 0%,transparent 70%)}.ov-bs-hero .breadcrumbs{position:relative;z-index:2;font-size:.8rem;margin-bottom:1.5rem}.ov-bs-hero .breadcrumbs a{color:var(--color-text-muted)}.ov-bs-hero .breadcrumbs a:hover{color:var(--color-accent)}.ov-bs-hero .breadcrumbs [aria-hidden=true]{margin:0 .35rem;color:var(--color-text-muted)}.ov-bs-hero .breadcrumbs span[aria-current]{color:var(--color-text-muted)}.ov-bs-hero-text{position:relative;z-index:2;max-width:700px}.ov-bs-hero-text h1{font-size:clamp(2.6rem,6vw,4.2rem);font-weight:800;line-height:1.05;letter-spacing:-.025em;margin-bottom:1.5rem;color:var(--color-heading)}.ov-bs-hero-dek{font-size:1.15rem;line-height:1.65;color:var(--color-text-muted);max-width:560px;margin:0 auto}.ov-bs-toc{border-left:3px solid var(--color-accent);background:var(--color-surface);padding:1.5rem 1.75rem;margin:2.5rem 0 3rem;border-radius:0 6px 6px 0}.ov-bs-toc .toc-title{font-size:.85rem;text-transform:uppercase;letter-spacing:.08em;color:var(--color-accent);margin:0 0 1rem;border:none;padding:0}.toc-list{list-style:none;counter-reset:toc;padding:0;margin:0}.toc-list li{counter-increment:toc;display:flex;align-items:baseline;gap:.5rem;padding:.35rem 0;border-bottom:1px solid var(--color-border)}.toc-list li:last-child{border-bottom:none}.toc-list li:before{content:counter(toc) ".";color:var(--color-text-muted);font-size:.8rem;min-width:1.5rem;flex-shrink:0}.toc-list a{color:var(--color-text);text-decoration:none;font-size:.95rem;transition:color .15s}.toc-list a:hover{color:var(--color-accent)}.toc-ref{margin-left:auto;color:var(--color-text-muted);font-size:.8rem;font-variant-numeric:tabular-nums;white-space:nowrap;flex-shrink:0}.ov-bs-body{max-width:var(--max-width-article);margin:0 auto;font-size:1.05rem;line-height:1.75;padding-top:4rem}.ov-bs-body h2{font-size:1.35rem;margin:3.5rem 0 1rem;padding-top:2rem;border-top:1px solid var(--color-border)}.ov-bs-body h2:first-child{border-top:none;padding-top:0;margin-top:0}.ov-bs-body h3{font-size:1.15rem;margin:2rem 0 .75rem}.ov-bs-body p{margin-bottom:1.25rem}.ov-bs-body blockquote{margin:1.75rem 0;padding:1.25rem 1.75rem;border-left:3px solid var(--color-accent);background:var(--color-accent-dim);border-radius:0 var(--radius) var(--radius) 0}.ov-bs-body blockquote p{margin:0;font-size:1.05rem;line-height:1.6;font-style:italic;color:var(--color-text)}.ov-bs-body ul,.ov-bs-body ol{padding-left:1.5rem;margin-bottom:1.25rem}.ov-bs-body li{margin-bottom:.5rem;line-height:1.65}.ov-bs-body em{color:var(--color-accent)}.ov-bs-body strong{color:var(--color-heading)}.ov-bs-convergence{display:flex;flex-direction:column;gap:0;margin:2rem 0 2.5rem;border:1px solid var(--color-border);border-radius:var(--radius);overflow:hidden}.ov-bs-conv-row{display:grid;grid-template-columns:7rem 10rem 1fr;gap:1rem;padding:1.25rem 1.5rem;border-bottom:1px solid var(--color-border);background:var(--color-bg-card);align-items:start}.ov-bs-conv-row:last-child{border-bottom:none}.ov-bs-conv-name{font-weight:800;color:var(--color-accent);font-size:.95rem;text-transform:uppercase;letter-spacing:.05em}.ov-bs-conv-where{font-size:.85rem;color:var(--color-text-muted);font-weight:600}.ov-bs-conv-what{font-size:.92rem;line-height:1.55;color:var(--color-text)}@media(max-width:640px){.ov-bs-conv-row{grid-template-columns:1fr;gap:.25rem}}.ov-bs-footer{margin-top:3rem;padding-top:1.5rem;border-top:1px solid var(--color-border);display:flex;justify-content:space-between;flex-wrap:wrap;gap:1rem}