.doc-layout{display:flex;max-width:1600px;margin:0 auto;min-height:100vh}.sidebar{width:17rem;flex-shrink:0;position:sticky;top:var(--header-height, 64px);height:calc(100vh - var(--header-height, 64px));overflow-y:auto;background:var(--color-bg-alt);border-right:1px solid var(--bg-card-border);padding:1.5rem 0;scrollbar-width:thin;scrollbar-color:color-mix(in srgb,var(--accent-primary) 30%,transparent) transparent}.sidebar-nav{display:flex;flex-direction:column}.sidebar-toc-label{font-family:var(--font-mono);font-size:.65rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--text-secondary);margin:0 0 .6rem;padding:0 1.25rem 0 var(--page-padding)}.sidebar-section{padding-bottom:.2rem;margin-bottom:.2rem;border-bottom:1px solid var(--bg-card-border)}.sidebar-section:last-child{border-bottom:none}.sidebar-link,.sidebar-sublink{display:block;padding:.35rem 1.25rem .35rem var(--page-padding);font-family:var(--font-body);font-size:.85rem;color:var(--text-secondary);text-decoration:none;border-left:3px solid transparent;transition:all .15s ease;line-height:1.4}.sidebar-link{font-weight:600;font-size:.875rem}.sidebar-sublink{padding-left:calc(var(--page-padding) + .75rem);font-size:.78rem}.sidebar-link:hover,.sidebar-sublink:hover{color:var(--text-heading);background:color-mix(in srgb,var(--accent-primary) 5%,transparent);text-decoration:none;text-shadow:none}.sidebar-link.active,.sidebar-sublink.active{color:var(--accent-primary);border-left-color:var(--accent-primary);background:color-mix(in srgb,var(--accent-primary) 7%,transparent);font-weight:700}.content-area{flex:1;min-width:0;padding:2.5rem var(--page-padding) 4rem;background:var(--bg-primary)}.content-area [id]{scroll-margin-top:calc(var(--header-height, 64px) + 1.5rem)}.spec-header{text-align:left;padding-bottom:2.5rem;margin-bottom:2.5rem;border-bottom:2px solid var(--bg-card-border)}.spec-badge{display:inline-block;font-family:var(--font-mono);font-size:.7rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;padding:.3em .9em;border:1px solid var(--bg-card-border);color:var(--text-secondary);border-radius:9999px;margin-bottom:1rem}.spec-title{font-family:var(--font-display);font-size:clamp(1.9rem,4vw,2.6rem);color:var(--text-heading);line-height:1.15;margin:0 0 .6rem}.spec-version{font-family:var(--font-mono);font-size:.7em;font-weight:500;color:var(--accent-primary);background:color-mix(in srgb,var(--accent-primary) 10%,transparent);border:1px solid color-mix(in srgb,var(--accent-primary) 30%,transparent);padding:.15em .5em;border-radius:6px;vertical-align:.15em;margin-left:.5rem}.spec-subtitle{font-family:var(--font-body);font-size:1.1rem;color:var(--text-secondary);margin:0 0 .6rem;font-style:italic;max-width:none}.spec-meta{font-family:var(--font-body);font-size:.9rem;color:var(--text-secondary);margin:0 0 1.5rem;max-width:none}.spec-actions{display:flex;justify-content:center;gap:.75rem;flex-wrap:wrap;margin-top:1rem}.download-btn{display:inline-flex;align-items:center;gap:.5rem;padding:.65rem 1.25rem;font-family:var(--font-body);font-size:.9rem;font-weight:600;color:var(--text-primary);background:var(--bg-surface);border:1px solid var(--bg-card-border);border-radius:6px;text-decoration:none;transition:all .15s ease}.download-btn:hover{border-color:var(--accent-primary);color:var(--accent-primary);text-decoration:none;text-shadow:none}.download-btn.primary{background:var(--accent-primary);color:var(--bg-primary);border-color:var(--accent-primary)}.download-btn.primary:hover{background:color-mix(in srgb,var(--accent-primary) 85%,black);color:var(--bg-primary)}.spec-archive-link{font-family:var(--font-body);font-size:.82rem;color:var(--text-dim);margin:.75rem 0 0}.spec-archive-link a{color:var(--accent-primary);text-decoration:underline;text-underline-offset:2px}.spec-section{padding-top:2.5rem;padding-bottom:1rem;border-top:1px solid var(--bg-card-border)}.spec-preamble-section{border-top:none;padding-top:1rem}.section-heading{display:flex;align-items:center;gap:1rem;margin-bottom:1.5rem;flex-wrap:wrap}.section-heading h2{font-family:var(--font-display);font-size:clamp(1.4rem,2.5vw,2rem);color:var(--text-heading);margin:0;line-height:1.25}.badge-normative,.badge-informative{display:inline-block;font-family:var(--font-mono);font-size:.65rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;padding:.25em .7em;border-radius:4px}.badge-normative{background:color-mix(in srgb,var(--accent-secondary) 18%,transparent);color:var(--accent-secondary);border:1px solid color-mix(in srgb,var(--accent-secondary) 40%,transparent)}.badge-informative{background:transparent;color:var(--text-secondary);border:1px dashed var(--bg-card-border);opacity:.75}.spec-subsection{margin-top:1.75rem}.spec-subsection h3{font-family:var(--font-body);font-size:1.2rem;font-weight:600;color:var(--text-heading);margin:0 0 .75rem;letter-spacing:.01em}.spec-prose{font-family:var(--font-mono);font-size:.86rem;line-height:1.7;color:var(--text-primary);background:var(--bg-surface);border:1px solid var(--bg-card-border);border-radius:6px;padding:1rem 1.25rem;margin:0 0 .75rem;white-space:pre-wrap;word-wrap:break-word;overflow-x:auto;tab-size:2}.intro-callout{margin-top:2rem}.intro-callout h3{font-family:var(--font-body);font-size:1.05rem;font-weight:700;letter-spacing:.02em;color:var(--text-heading);margin:0 0 .6rem;text-transform:none}.spec-closing{margin-top:3rem;padding-top:2rem;border-top:1px solid var(--bg-card-border);text-align:center}.spec-closing .spec-prose{background:transparent;border:none;text-align:center;color:var(--text-secondary);font-size:.85rem}.mobile-toc{display:none;position:sticky;top:var(--header-height, 64px);z-index:40;background:var(--color-bg-alt);border-bottom:1px solid var(--bg-card-border)}.mobile-toc-toggle{display:flex;align-items:center;justify-content:space-between;width:100%;padding:1rem 1.5rem;background:none;border:none;color:var(--accent-primary);font-family:var(--font-body);font-size:.95rem;font-weight:600;cursor:pointer}.mobile-toc-toggle .chevron{transition:transform .2s}.mobile-toc-toggle[aria-expanded=true] .chevron{transform:rotate(180deg)}.mobile-toc-list{display:none;max-height:60vh;overflow-y:auto;padding:0 1rem 1rem}.mobile-toc-list[aria-hidden=false]{display:block}.toc-link{display:block;padding:.4rem .75rem;font-family:var(--font-body);font-size:.85rem;color:var(--text-secondary);text-decoration:none;border-radius:4px}.toc-link:hover{color:var(--text-heading);background:color-mix(in srgb,var(--accent-primary) 7%,transparent);text-shadow:none}.toc-h2{padding-left:1.5rem;font-size:.8rem}@media(max-width:1024px){.sidebar{display:none}.mobile-toc{display:block}.content-area{padding:1.5rem var(--page-padding) 3rem}.spec-prose{font-size:.78rem;padding:.75rem .85rem}}