.page.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;column-gap:clamp(32px,3.5vw,56px);max-width:1440px;margin:0 auto 120px;padding-top:22px}.article-main{min-width:0}.article-heading{padding:12px 0 30px;border-bottom:1px solid var(--border)}.article-heading h1{max-width:1080px;font:600 clamp(2.2rem,5vw,3.7rem)/1.08 var(--font-display);letter-spacing:-.04em;margin:15px 0}.article-heading p{max-width:920px;font-size:1.05rem;line-height:1.7;color:var(--text-secondary);margin:0}.meta-line{display:flex;flex-wrap:wrap;gap:10px;color:var(--text-muted);font-size:.8rem;margin-top:18px}.article-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}.toc{position:sticky;top:100px;align-self:start;max-height:calc(100vh - 124px);overflow:auto;scrollbar-width:none;padding:4px 0 4px 22px;border-left:1px solid var(--border);background:transparent}.toc::-webkit-scrollbar{display:none}.toc-title{display:flex;align-items:center;justify-content:space-between;gap:10px}.toc-title b{color:var(--text-primary);font-size:.76rem;text-transform:uppercase;letter-spacing:.1em}.toc-title span{color:var(--accent);font-weight:700}.toc-progress-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:10px;color:var(--text-muted);font-size:.72rem;font-weight:600}.toc-progress-meta span:first-child{white-space:nowrap}.toc-progress-meta span:last-child{padding:3px 7px;border-radius:var(--radius-pill);background:color-mix(in srgb,var(--accent) 10%,transparent);color:var(--accent);font-family:var(--font-mono)}.toc-progress{height:3px;margin:8px 0 12px;overflow:hidden;border-radius:var(--radius-pill);background:var(--border)}.toc-progress span{display:block;width:100%;height:100%;border-radius:inherit;background:var(--accent);transform:scaleX(0);transform-origin:left}.toc-links a{display:block;margin-top:2px;padding:6px 10px;border-left:2px solid transparent;color:var(--text-muted);font-size:.8rem;line-height:1.42}.toc-links a[data-depth="3"]{padding-left:20px;font-size:.76rem}.toc-links a:hover,.toc-links a[aria-current]{border-left-color:color-mix(in srgb,var(--accent) 65%,transparent);background:color-mix(in srgb,var(--accent) 6%,transparent);color:var(--accent)}.toc-links a[aria-current]{border-left-color:var(--accent);font-weight:600}.prose{font-size:1rem;line-height:1.8;color:var(--text-secondary);padding-top:30px}.prose :is(h2,h3,h4){color:var(--text-primary);font-family:var(--font-display);line-height:1.2;scroll-margin-top:95px}.prose h2{font-size:1.8rem;margin:2.8rem 0 .9rem}.prose h3{font-size:1.35rem;margin:2rem 0 .6rem}.prose a{color:var(--accent);text-decoration:underline}.prose code{font-family:var(--font-mono);font-size:.84em;background:var(--surface-raised);padding:.15em .35em;border-radius:4px}.prose pre{position:relative;border:1px solid var(--border);border-radius:var(--radius-md);padding:18px;overflow:auto;background:#12110f}.prose pre code{padding:0;background:none}.code-copy{position:absolute;top:10px;right:10px;border:1px solid color-mix(in srgb,var(--accent) 38%,var(--border));border-radius:var(--radius-sm);padding:5px 8px;background:color-mix(in srgb,var(--surface-raised) 86%,transparent);color:var(--text-primary);font-size:.72rem;cursor:pointer}.code-copy:hover{border-color:var(--accent);background:var(--surface-raised)}.prose blockquote{margin:1.5rem 0;border-left:3px solid var(--accent);padding:1rem 1.25rem;background:var(--surface-raised);color:var(--text-primary);font-style:italic}.table-scroll{position:relative;margin:1.75rem 0;overflow-x:auto}.prose .table-scroll table{display:table;width:100%;margin:0;border-collapse:separate;border-spacing:0;border:1px solid var(--border-strong);border-radius:var(--radius-md);overflow:hidden;font-size:.92em;line-height:1.55}.table-scroll-cue{display:none}.prose th,.prose td{padding:12px 14px;border:0;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}.prose th{background:var(--surface-raised);color:var(--text-primary);font-weight:600}.prose th+th,.prose td+td{border-left:1px solid var(--border)}.prose tbody tr:nth-child(2n){background:color-mix(in srgb,var(--surface-raised) 55%,transparent)}.prose tbody tr:last-child td{border-bottom:0}.related{border-top:1px solid var(--border);margin-top:48px;padding-top:22px}.related .article-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.selection-search{position:fixed;z-index:20}.selection-search[data-position=above]{transform:translateY(-100%)}.selection-search button{border:1px solid color-mix(in srgb,var(--accent) 55%,var(--border));border-radius:999px;background:var(--surface-raised);box-shadow:0 6px 18px #0002;color:var(--text-secondary);cursor:pointer;font:600 .72rem var(--font-body);letter-spacing:.01em;padding:6px 10px}.selection-search button:hover,.selection-search button:focus-visible{background:var(--accent);border-color:var(--accent);color:var(--surface)}.section-menu-button,.section-menu-dialog{display:none}@media(max-width:960px){.page.article-layout{display:block;margin-top:32px}.article-main{max-width:none}.toc{display:none}.section-menu-button{position:fixed;right:16px;bottom:18px;z-index:18;display:inline-flex;align-items:center;gap:8px;min-height:42px;padding:0 14px;border:1px solid color-mix(in srgb,var(--accent) 42%,var(--border));border-radius:var(--radius-pill);background:color-mix(in srgb,var(--surface) 94%,transparent);box-shadow:0 6px 20px #0003;color:var(--text-primary);font-size:.78rem;font-weight:700;backdrop-filter:blur(10px)}.section-menu-icon{display:grid;gap:3px;width:16px}.section-menu-icon i{display:block;height:2px;border-radius:2px;background:currentColor}.section-menu-dialog[open]{position:fixed;inset:0 0 0 auto;display:block;width:min(360px,calc(100% - 40px));max-width:none;height:100dvh;max-height:none;margin:0;padding:0;border:0;border-left:1px solid var(--border-strong);background:var(--surface);box-shadow:-20px 0 60px #0006;color:var(--text-primary)}.section-menu-dialog::backdrop{background:#0008;backdrop-filter:blur(2px)}.section-menu-header{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;padding:22px;border-bottom:1px solid var(--border);background:var(--surface-raised)}.section-menu-header small{color:var(--accent);font-size:.68rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase}.section-menu-header h2{margin:5px 0 0;font:600 1.35rem/1.2 var(--font-display)}.section-menu-close{display:grid;flex:none;width:36px;height:36px;place-items:center;border:1px solid var(--border-strong);border-radius:50%;background:var(--surface);color:var(--text-primary);font-size:1.4rem;line-height:1}.section-menu-links{padding:12px 22px 28px;overflow:auto}.section-menu-links a{display:block;padding:12px 4px;border-bottom:1px solid var(--border);color:var(--text-secondary);font-size:.92rem;line-height:1.4}.section-menu-links a[data-depth="3"]{padding-left:20px;font-size:.84rem}.section-menu-links a:hover,.section-menu-links a[aria-current]{color:var(--accent)}.section-menu-links a[aria-current]{font-weight:700}}@media(max-width:720px){.page.article-layout{margin-top:16px;margin-bottom:72px;padding-top:0}.back-link{margin-top:12px;margin-bottom:18px}.article-heading{padding-bottom:24px}.article-heading h1{font-size:clamp(1.9rem,8vw,2.35rem);line-height:1.04;letter-spacing:-.03em}.article-heading p{font-size:1rem;line-height:1.65}.meta-line{gap:8px}.prose{padding-top:24px;font-size:.98rem;line-height:1.75}.prose h2{font-size:1.6rem;margin-top:2.4rem}.prose h3{font-size:1.25rem}.prose pre{padding:14px;border-radius:var(--radius-sm)}.prose th,.prose td{padding:10px 12px}.toc{margin:24px 0;padding:14px}.related{margin-top:40px}.related h2{font-size:1.5rem}}.back-to-top{position:fixed;right:16px;bottom:18px;z-index:15;border:1px solid color-mix(in srgb,var(--accent) 48%,var(--border));border-radius:var(--radius-pill);padding:9px 12px;background:color-mix(in srgb,var(--surface) 90%,transparent);box-shadow:0 6px 20px #0003;color:var(--text-primary);font:600 .78rem var(--font-body);cursor:pointer}.back-to-top:hover{border-color:var(--accent);background:var(--surface-raised)}.diagram-expand{display:inline-flex;margin-top:10px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);padding:7px 9px;background:var(--surface-raised);color:var(--text-primary);font-size:.76rem;font-weight:600;cursor:pointer}.diagram-expand:hover{border-color:var(--accent);color:var(--accent)}.diagram-dialog{width:min(1100px,calc(100% - 24px));max-height:calc(100dvh - 24px);padding:38px 16px 16px;border:1px solid var(--border-strong);border-radius:var(--radius-md);background:var(--surface);box-shadow:0 24px 80px #0008}.diagram-dialog::backdrop{background:#000a}.diagram-dialog img{display:block;max-width:100%;max-height:calc(100dvh - 90px);margin:auto}.diagram-close{position:absolute;top:8px;right:10px;width:30px;height:30px;border:0;border-radius:50%;background:var(--surface-raised);color:var(--text-primary);font-size:22px;line-height:1;cursor:pointer}@media(max-width:960px){.back-to-top{bottom:70px}}@media(max-width:720px){.section-menu-button{right:12px;bottom:12px}.table-scroll-cue{position:sticky;right:8px;bottom:7px;float:right;display:block;width:max-content;margin-top:-30px;margin-right:8px;padding:4px 7px;border:1px solid color-mix(in srgb,var(--accent) 30%,var(--border));border-radius:var(--radius-pill);background:color-mix(in srgb,var(--surface) 90%,transparent);box-shadow:0 2px 8px #0002;color:var(--text-primary);font-size:.68rem;pointer-events:none}.back-to-top{right:12px;bottom:76px}}.missing-section{scroll-margin-top:95px;padding:12px 16px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--surface-raised);color:var(--text-primary)}.missing-section a{color:var(--accent);text-decoration:underline}.toc{padding:14px;border:1px solid var(--border);border-radius:var(--radius-md);background:color-mix(in srgb,var(--surface) 92%,transparent);box-shadow:0 14px 38px color-mix(in srgb,var(--text-primary) 7%,transparent);backdrop-filter:blur(14px)}.toc-eyebrow{color:var(--accent);font:700 .78rem/1.2 var(--font-body);letter-spacing:0}.toc-progress-meta{margin-top:10px;padding-top:10px;border-top:1px solid var(--border)}.toc-links{display:grid;gap:2px;margin-top:10px}.toc-links a{display:block;margin:0;padding:8px;border:0;border-radius:var(--radius-sm)}.toc-links a[data-depth="3"]{padding-left:20px}.toc-links a:hover,.toc-links a[aria-current]{border:0;background:color-mix(in srgb,var(--accent) 8%,var(--surface));color:var(--text-primary)}.toc-links a[aria-current]{color:var(--accent);font-weight:700}@media(max-width:960px){body:has(.section-menu-dialog[open]){overflow:hidden}.section-menu-button{bottom:18px;min-height:46px;padding:0 16px;border-color:var(--border-strong);background:color-mix(in srgb,var(--surface) 90%,transparent);box-shadow:0 12px 34px #0003;backdrop-filter:blur(16px) saturate(140%)}.section-menu-button:hover{border-color:var(--accent);background:var(--surface-raised)}.section-menu-dialog[open]{display:grid;grid-template-rows:auto minmax(0,1fr);width:min(430px,calc(100% - 28px));overflow:hidden;background:var(--surface);box-shadow:-24px 0 70px #0007;animation:section-menu-enter .42s cubic-bezier(.22,1,.36,1)}.section-menu-dialog::backdrop{background:#0008;backdrop-filter:blur(6px)}.section-menu-header{align-items:center;min-height:78px;padding:16px 20px;background:color-mix(in srgb,var(--surface) 92%,transparent);backdrop-filter:blur(14px)}.section-menu-heading{display:flex;align-items:center;gap:12px;min-width:0}.section-menu-badge{display:grid;width:40px;height:40px;flex:none;place-items:center;border-radius:11px;background:color-mix(in srgb,var(--accent) 12%,var(--surface-raised));color:var(--accent);font:600 1rem var(--font-display)}.section-menu-header small{display:block}.section-menu-header h2{font-size:1.12rem}.section-menu-close{border-radius:10px}.section-menu-close:hover{border-color:var(--accent);color:var(--accent)}.section-menu-body{min-height:0;overflow:auto;padding:22px 22px 34px}.section-menu-intro{margin:0 0 18px;color:var(--text-secondary);font-size:.9rem;line-height:1.6}.section-menu-progress-meta{display:flex;justify-content:space-between;gap:12px;color:var(--text-muted);font-size:.72rem;font-weight:600}.section-menu-progress-meta span:last-child{color:var(--accent);font-family:var(--font-mono)}.section-menu-progress{height:3px;margin:9px 0 20px;overflow:hidden;border-radius:var(--radius-pill);background:var(--border)}.section-menu-progress span{display:block;width:100%;height:100%;border-radius:inherit;background:var(--accent);transform:scaleX(0);transform-origin:left}.section-menu-links{display:grid;padding:0;overflow:visible}.section-menu-links a{display:block;padding:13px 8px;border-bottom:1px solid var(--border);color:var(--text-secondary)}.section-menu-links a[data-depth="3"]{padding-left:24px}.section-menu-links a:hover,.section-menu-links a[aria-current]{color:var(--text-primary)}.section-menu-links a[aria-current]{color:var(--accent);font-weight:700}}@media(max-width:520px){.section-menu-dialog[open]{width:100%}.section-menu-body{padding-inline:18px}}.toc-video-prompt,.section-menu-video-prompt{margin:14px 0;padding:15px 14px;border:1px solid color-mix(in srgb,var(--accent) 30%,var(--border));border-left:3px solid var(--accent);border-radius:var(--radius-sm);background:color-mix(in srgb,var(--accent) 6%,var(--surface-raised))}.toc-video-prompt>span,.section-menu-video-prompt>span{display:block;color:var(--accent);font:700 .78rem/1.2 var(--font-body);letter-spacing:0}.toc-video-prompt strong,.section-menu-video-prompt strong{display:block;margin-top:6px;color:var(--text-primary);font-size:.94rem}.toc-video-prompt p,.section-menu-video-prompt p{margin:6px 0 12px;color:var(--text-secondary);font-size:.8rem;line-height:1.5}.video-overview-button{display:inline-flex;align-items:center;min-height:32px;border:1px solid color-mix(in srgb,var(--accent) 45%,var(--border));border-radius:var(--radius-sm);padding:0 10px;background:var(--surface);color:var(--accent);font:700 .76rem var(--font-body);cursor:pointer}.video-overview-button:hover,.video-overview-button:focus-visible{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 10%,var(--surface-raised));text-decoration:none}.learning-drawer{position:fixed;inset:0 0 0 auto;width:min(560px,94vw);max-width:none;height:100dvh;max-height:none;margin:0;padding:0;border:0;border-left:1px solid var(--border-strong);background:var(--surface);box-shadow:-18px 0 70px #0005;color:var(--text-primary)}.learning-drawer[open]{display:grid;grid-template-rows:auto minmax(0,1fr);animation:section-menu-enter .42s cubic-bezier(.22,1,.36,1)}.learning-drawer::backdrop{background:#0008;backdrop-filter:blur(6px)}body:has(.learning-drawer[open]){overflow:hidden}.learning-drawer-header{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:78px;padding:18px 22px;border-bottom:1px solid var(--border);background:color-mix(in srgb,var(--surface) 92%,transparent);backdrop-filter:blur(14px)}.learning-drawer-heading{display:flex;align-items:center;gap:12px;min-width:0}.learning-drawer-badge{display:grid;width:40px;height:40px;flex:none;place-items:center;border-radius:12px;background:color-mix(in srgb,var(--accent) 12%,var(--surface-raised));color:var(--accent);font:600 1rem var(--font-mono)}.learning-drawer-heading small{display:block;margin-bottom:3px;color:var(--text-muted);font:700 .62rem var(--font-mono);letter-spacing:.1em;text-transform:uppercase}.learning-drawer-heading h2{margin:0;font:600 1.15rem/1.2 var(--font-display)}.learning-drawer-close{display:grid;width:38px;height:38px;flex:none;place-items:center;border:1px solid var(--border-strong);border-radius:10px;background:var(--surface-raised);color:var(--text-primary);font-size:1.3rem;cursor:pointer}.learning-drawer-close:hover{border-color:var(--accent);color:var(--accent)}.learning-drawer-body{min-height:0;overflow:auto;padding:28px}.learning-panel>p{margin:0 0 22px;color:var(--text-secondary);font:1rem/1.6 var(--font-display)}.learning-video-frame{position:relative;display:grid;min-height:280px;place-items:center;overflow:hidden;border-radius:18px;background:#0d1b33}.learning-video-frame iframe{width:100%;height:100%;min-height:inherit;border:0}.learning-video-placeholder{display:grid;justify-items:center;gap:10px;color:#fff;text-align:center}.learning-video-placeholder>span{display:grid;width:66px;height:66px;place-items:center;border:1px solid #ffffff88;border-radius:50%;font-size:1.7rem;padding-left:3px}.learning-video-placeholder small{color:#cbd6ed}.learning-video-progress{height:4px;margin:18px 0 9px;border-radius:999px;background:var(--border);overflow:hidden}.learning-video-progress span{display:block;width:0;height:100%;background:var(--accent)}.learning-video-time{display:flex;justify-content:space-between;color:var(--text-muted);font:.7rem var(--font-mono)}.learning-transcript,.learning-feedback{margin-top:22px;padding:20px;border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface-raised);color:var(--text-secondary);line-height:1.6}.learning-transcript b{color:var(--text-primary)}.learning-transcript p{margin:8px 0 0}@keyframes section-menu-enter{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}@keyframes section-menu-exit{0%{opacity:1;transform:translate(0)}to{opacity:0;transform:translate(100%)}}.section-menu-dialog.is-closing,.learning-drawer.is-closing{animation:section-menu-exit .32s cubic-bezier(.4,0,1,1) forwards}@media(max-width:960px){.section-menu-video-prompt{margin-top:0}.section-menu-video-prompt strong{font-size:1rem}.section-menu-video-prompt p{font-size:.86rem}.section-menu-video-prompt .video-overview-button{min-height:36px;font-size:.82rem}}@media(max-width:720px){.learning-drawer{width:100%}.learning-drawer-header{padding:16px 18px}.learning-drawer-body{padding:22px 18px}.learning-video-frame{min-height:220px}}@media(prefers-reduced-motion:reduce){.section-menu-dialog[open],.learning-drawer[open],.section-menu-dialog.is-closing,.learning-drawer.is-closing{animation:none}}.article-heading{padding-top:clamp(22px,4vw,48px);padding-bottom:clamp(28px,4vw,42px)}.article-heading>.tag{width:fit-content;border:1px solid color-mix(in srgb,var(--accent) 28%,var(--border));background:color-mix(in srgb,var(--accent) 9%,var(--surface));color:var(--accent);font-family:var(--font-mono);letter-spacing:.04em;text-transform:uppercase}.article-heading h1{max-width:19ch;margin:18px 0 16px}.article-heading p{max-width:67ch;font-size:clamp(1rem,1.3vw,1.12rem);line-height:1.68}.meta-line{gap:9px;margin-top:22px}.article-tags{margin-top:16px}.article-tags .tag{border:1px solid var(--border);background:var(--surface-raised);color:var(--text-secondary);transition:border-color var(--transition),color var(--transition),background-color var(--transition)}.article-tags .tag:hover{border-color:color-mix(in srgb,var(--accent) 45%,var(--border));background:color-mix(in srgb,var(--accent) 7%,var(--surface));color:var(--text-primary)}.prose{max-width:76ch;font-size:clamp(1rem,1.15vw,1.08rem)}.prose h2{margin-top:3.25rem;padding-top:.3rem;letter-spacing:-.02em}.prose h3{letter-spacing:-.01em}.prose a{text-decoration-color:color-mix(in srgb,var(--accent) 56%,transparent);text-underline-offset:.16em}.prose a:hover{color:var(--text-primary);text-decoration-color:var(--accent)}.prose :is(pre,blockquote,.table-scroll,.diagram){scroll-margin-top:100px}