.k-article,.k-hub{--k-ink:var(--foreground);--k-ink-2:var(--muted-strong);--k-muted:var(--secondary);--k-rule:var(--border);--k-surface:var(--surface);--k-accent:var(--primary);--k-accent-soft:var(--primary-subtle);--k-green:var(--success);--k-display:var(--c-font-display);background:var(--background);color:var(--k-ink);font-family:var(--c-font-sans)}.k-eyebrow{color:var(--k-accent);font:500 var(--fs-micro) / 1.4 var(--c-font-mono);letter-spacing:var(--tr-label);text-transform:uppercase;margin:0}.k-breadcrumbs{color:var(--k-muted);font-size:var(--fs-caption);align-items:center;gap:9px;margin-bottom:48px;display:flex}.k-breadcrumbs a{color:inherit;text-decoration:none}.k-breadcrumbs a:hover{color:var(--k-accent)}.k-article-hero{border-bottom:1px solid var(--k-rule);max-width:1440px;margin:0 auto;padding:clamp(48px,6vw,88px) clamp(24px,5vw,72px) clamp(56px,7vw,96px)}.k-hero-grid{grid-template-columns:minmax(0,.9fr) minmax(440px,1.1fr);align-items:center;gap:clamp(48px,7vw,112px);display:grid}.k-hero-copy h1,.k-hub-hero h1{max-width:760px;font-family:var(--k-display);font-size:var(--fs-display);font-weight:var(--fw-display);line-height:var(--lh-display);letter-spacing:var(--tr-display);text-wrap:balance;margin:18px 0 24px}.k-description{max-width:64ch;color:var(--k-ink-2);font-size:var(--fs-lead);text-wrap:pretty;margin:0;line-height:1.55}.k-meta{color:var(--k-muted);font:500 var(--fs-micro) / 1.4 var(--c-font-mono);flex-wrap:wrap;gap:10px 24px;margin-top:32px;display:flex}.k-meta span+span:before{content:"·";color:var(--k-accent);margin-right:24px}.k-visual{background:var(--k-surface);border:1px solid var(--k-rule);min-height:360px;margin:0;padding:clamp(24px,3vw,44px)}.k-visual-arrow{color:var(--k-accent);font-family:var(--c-font-mono);font-style:normal}.k-visual-stack{flex-direction:column;justify-content:center;gap:10px;display:flex}.k-visual-stack>div{border:1px solid var(--k-rule);background:#fff;justify-content:space-between;align-items:baseline;gap:24px;padding:18px 20px;display:flex}.k-visual-stack>div span,.k-policy-agent span,.k-policy-check span,.k-policy-receipt span,.k-boundary span,.k-compare-protocol span,.k-compare-shared span{color:var(--k-muted);font:500 var(--fs-micro) / 1 var(--c-font-mono);letter-spacing:var(--tr-label);text-transform:uppercase}.k-visual-stack>div strong{font-size:var(--fs-small);font-weight:600}.k-visual-stack>.k-stack-market{background:var(--k-ink);color:#fff}.k-visual-stack>.k-stack-market span{color:var(--c-dark-code-muted)}.k-visual-stack>.k-visual-arrow{text-align:center;transform:rotate(90deg)}.k-visual-lanes{background:var(--k-rule);grid-template-columns:1fr 1fr;gap:1px;padding:0;display:grid}.k-lane{background:#fff;flex-direction:column;align-items:flex-start;gap:10px;padding:32px;display:flex}.k-lane-label{color:var(--k-muted);font:600 var(--fs-micro) / 1 var(--c-font-mono);letter-spacing:var(--tr-label);text-transform:uppercase;margin-bottom:12px}.k-lane div{background:var(--k-surface);width:100%;font-size:var(--fs-caption);padding:12px 14px;font-weight:600}.k-lane .is-blocked{color:var(--k-accent);background:var(--k-accent-soft)}.k-lane strong{font-size:var(--fs-small);color:var(--k-accent);margin-top:auto;padding-top:18px}.k-lane.is-active strong{color:var(--k-green)}.k-lane.is-active div:nth-of-type(3){background:var(--success-subtle);color:var(--success)}.k-lane .k-visual-arrow{align-self:center;transform:rotate(90deg)}.k-visual-policy{grid-template-columns:1fr auto 1fr auto 1fr;align-items:center;gap:14px;display:grid}.k-visual-policy>div{text-align:center;background:#fff;flex-direction:column;justify-content:center;gap:14px;min-height:180px;padding:20px;display:flex}.k-visual-policy strong{font-size:var(--fs-body)}.k-visual-policy small{color:var(--k-muted);font:500 var(--fs-micro) / 1.5 var(--c-font-mono)}.k-policy-check{outline:2px solid var(--k-green);outline-offset:-2px}.k-policy-check strong{color:var(--k-green)}.k-visual-boundaries{grid-template-columns:1fr;align-content:center;gap:0;display:grid}.k-boundary,.k-boundary-open{text-align:center;padding:24px}.k-boundary{border:1px solid var(--k-rule);background:#fff;justify-content:space-between;gap:24px;display:flex}.k-boundary-open{background:var(--k-ink);color:#fff;margin:12px 28px}.k-boundary-open small{color:var(--c-dark-code-muted);font:500 var(--fs-micro) / 1 var(--c-font-mono);letter-spacing:var(--tr-label);text-transform:uppercase;margin-bottom:8px;display:block}.k-visual-http{background:var(--k-ink);border-color:var(--k-ink);flex-direction:column;justify-content:center;gap:2px;display:flex}.k-visual-http>div{background:var(--c-dark-surface);color:var(--dark-code);justify-content:space-between;align-items:center;gap:28px;padding:20px 22px;display:flex}.k-visual-http code{font:500 var(--fs-caption) / 1.4 var(--c-font-mono)}.k-visual-http span{color:var(--dark-label);font:500 var(--fs-micro) / 1 var(--c-font-mono);text-transform:uppercase}.k-visual-http .is-accent{background:var(--dark-accent-surface)}.k-visual-http .is-success{background:var(--dark-signal-surface)}.k-visual-compare{background:var(--k-rule);grid-template-columns:1fr 1.25fr 1fr;align-items:stretch;gap:1px;padding:1px;display:grid}.k-compare-protocol,.k-compare-shared{text-align:center;background:#fff;flex-direction:column;justify-content:center;gap:12px;padding:24px;display:flex}.k-compare-protocol strong{font-size:var(--fs-lead)}.k-compare-protocol small,.k-compare-shared small{color:var(--k-muted);font:500 var(--fs-micro) / 1.5 var(--c-font-mono)}.k-compare-shared{background:var(--k-ink);color:#fff}.k-compare-shared span,.k-compare-shared small{color:var(--c-dark-code-muted)}.k-compare-shared strong{font-size:var(--fs-body);line-height:1.35}.k-article-layout{grid-template-columns:220px minmax(0,760px);gap:clamp(56px,8vw,120px);max-width:1160px;margin:0 auto;padding:clamp(64px,8vw,120px) 32px;display:grid}.k-toc{align-self:start;position:sticky;top:110px}.k-toc>p{color:var(--k-muted);font:600 var(--fs-micro) / 1 var(--c-font-mono);letter-spacing:var(--tr-label);text-transform:uppercase;margin:0 0 18px}.k-toc ol{flex-direction:column;gap:10px;margin:0;padding:0;list-style:none;display:flex}.k-toc a{color:var(--k-muted);font-size:var(--fs-micro);line-height:1.4;text-decoration:none;display:block}.k-toc a:hover{color:var(--k-accent)}.k-prose{min-width:0}.k-answer{background:var(--k-accent-soft);border:1px solid var(--primary-border);padding:30px 32px}.k-answer-label,.k-note>p{color:var(--k-accent);font:600 var(--fs-micro) / 1 var(--c-font-mono);letter-spacing:var(--tr-label);text-transform:uppercase;margin:0 0 10px}.k-answer>p:last-child{color:var(--k-ink);font-size:var(--fs-lead);margin:0;line-height:1.5}.k-takeaways,.k-section,.k-sources{padding-top:64px;scroll-margin-top:110px}.k-takeaways h2,.k-section h2,.k-sources h2{font-family:var(--k-display);font-size:var(--fs-section);font-weight:var(--fw-display);line-height:var(--lh-headline);letter-spacing:var(--tr-display);text-wrap:balance;margin:0 0 24px}.k-takeaways ul,.k-bullets{border-top:1px solid var(--k-rule);margin:0;padding:0;list-style:none}.k-takeaways li,.k-bullets li{border-bottom:1px solid var(--k-rule);color:var(--k-ink-2);font-size:var(--fs-body);padding:16px 12px 16px 34px;line-height:1.55;position:relative}.k-takeaways li:before,.k-bullets li:before{content:"✓";color:var(--k-green);font-family:var(--c-font-mono);position:absolute;left:8px}.k-table-scroll{border-top:1px solid var(--k-rule);margin:0 0 22px;overflow-x:auto}.k-table-scroll:focus-visible{outline:2px solid var(--k-accent);outline-offset:2px}.k-table{border-collapse:collapse;width:100%;min-width:34rem;font-size:var(--fs-small);text-align:left;line-height:1.55}.k-table-caption{color:var(--k-ink-2);font-size:var(--fs-micro);text-align:left;padding:0 12px 12px}.k-table th,.k-table td{border-bottom:1px solid var(--k-rule);vertical-align:top;padding:14px 12px}.k-table thead th{color:var(--k-accent);font:600 var(--fs-micro) / 1 var(--c-font-mono);letter-spacing:var(--tr-label);text-transform:uppercase}.k-table tbody th{width:11rem;color:var(--k-ink);font-weight:600}.k-table td{color:var(--k-ink-2)}.k-section>p{max-width:68ch;color:var(--k-ink-2);font-size:var(--fs-body);text-wrap:pretty;margin:0 0 22px;line-height:1.72}.k-steps{border-top:1px solid var(--k-rule);margin:32px 0 0;padding:0;list-style:none}.k-steps li{border-bottom:1px solid var(--k-rule);grid-template-columns:44px 1fr auto;align-items:start;gap:18px;padding:22px 0;display:grid}.k-step-number{color:var(--k-accent);font:500 var(--fs-micro) / 1.5 var(--c-font-mono)}.k-steps h3{font-size:var(--fs-body);margin:0 0 6px;font-weight:600}.k-steps p{color:var(--k-muted);font-size:var(--fs-small);margin:0;line-height:1.55}.k-steps small{color:var(--k-muted);font:500 var(--fs-micro) / 1 var(--c-font-mono);text-transform:uppercase}.k-note{background:var(--k-ink);color:#fff;margin-top:32px;padding:24px 26px}.k-note strong{overflow-wrap:anywhere;font-size:var(--fs-body);font-weight:500;line-height:1.55;display:block}.k-sources{border-top:1px solid var(--k-rule);margin-top:72px}.k-sources>p{color:var(--k-muted);font-size:var(--fs-small);line-height:1.6}.k-sources ol{margin:28px 0 0;padding:0;list-style:none}.k-sources a{border-bottom:1px solid var(--k-rule);color:var(--k-ink);justify-content:space-between;align-items:baseline;gap:24px;padding:16px 0;text-decoration:none;display:flex}.k-sources a:hover span{color:var(--k-accent)}.k-sources a small{color:var(--k-muted);font:500 var(--fs-micro) / 1.4 var(--c-font-mono);text-align:right}.k-related{background:var(--k-ink);color:#fff;grid-template-columns:minmax(240px,.65fr) 1fr;gap:64px;max-width:1280px;margin:0 auto;padding:clamp(56px,7vw,96px) clamp(24px,5vw,72px);display:grid}.k-related>div>p{color:var(--c-dark-code-muted);font:600 var(--fs-micro) / 1 var(--c-font-mono);letter-spacing:var(--tr-label);text-transform:uppercase;margin:0 0 14px}.k-related h2{font-family:var(--k-display);font-size:var(--fs-headline);font-weight:var(--fw-display);line-height:var(--lh-headline);letter-spacing:var(--tr-display);margin:0}.k-related-links{flex-direction:column;display:flex}.k-related-links a{border-bottom:1px solid var(--dark-rule);color:#fff;grid-template-columns:100px 1fr auto;gap:20px;padding:18px 0;text-decoration:none;display:grid}.k-related-links span{color:var(--c-dark-code-muted);font:500 var(--fs-micro) / 1.4 var(--c-font-mono);text-transform:uppercase}.k-related-links strong{font-size:var(--fs-small);font-weight:500}.k-related-links i{color:var(--cb-string);font-style:normal}.k-related-links a:hover strong{color:var(--dark-copy)}.k-hub{padding-bottom:1px}.k-hub-hero{border-bottom:1px solid var(--k-rule);grid-template-columns:1.2fr .8fr;align-items:end;gap:clamp(48px,8vw,128px);max-width:1440px;min-height:480px;margin:0 auto;padding:clamp(72px,9vw,136px) clamp(24px,5vw,72px);display:grid}.k-hub-hero h1{margin-bottom:0}.k-hub-hero>p{max-width:54ch;color:var(--k-ink-2);font-size:var(--fs-lead);margin:0 0 8px;line-height:1.6}.k-start{grid-template-columns:90px minmax(280px,.75fr) 1.25fr;align-items:center;gap:clamp(32px,5vw,72px);max-width:1320px;margin:clamp(64px,8vw,120px) auto;padding:0 32px;display:grid}.k-start-index{color:var(--k-accent);font:500 var(--fs-headline) / 1 var(--c-font-mono)}.k-start-copy>p:first-child{color:var(--k-accent);font:600 var(--fs-micro) / 1 var(--c-font-mono);letter-spacing:var(--tr-label);text-transform:uppercase;margin:0 0 12px}.k-start-copy h2{font-family:var(--k-display);font-size:var(--fs-headline);font-weight:var(--fw-display);line-height:var(--lh-headline);letter-spacing:var(--tr-display);margin:0 0 18px}.k-start-copy>p{color:var(--k-muted);font-size:var(--fs-small);line-height:1.6}.k-start-copy>a{color:var(--k-ink);font-size:var(--fs-small);align-items:center;gap:20px;margin-top:16px;font-weight:600;text-decoration:none;display:inline-flex}.k-start-copy>a span{color:var(--k-accent)}.k-start-path{background:var(--k-ink);min-height:220px;color:var(--dark-copy);align-content:center;margin:0;padding:26px 32px;list-style:none;display:grid}.k-start-path li{grid-template-columns:18px minmax(88px,auto) minmax(0,1fr);align-items:baseline;gap:4px 14px;padding:10px 0;display:grid;position:relative}.k-start-path li:before{content:"";z-index:1;border:1.5px solid var(--dark-label);background:var(--k-ink);border-radius:50%;align-self:start;width:9px;height:9px;margin-top:4px;position:relative}.k-start-path li:not(:last-child):after{content:"";background:var(--dark-rule);width:1px;position:absolute;top:17px;bottom:-10px;left:4px}.k-start-path li b{color:#fff;font:500 var(--fs-micro) / 1.35 var(--c-font-mono);letter-spacing:var(--tr-label);text-transform:uppercase}.k-start-path li span{color:var(--dark-muted);font-size:var(--fs-caption);line-height:1.5}.k-start-path li:last-child:before{border-color:var(--dark-signal);background:var(--dark-signal)}.k-start-path li:last-child b{color:var(--dark-signal)}.k-curriculum,.k-protocol-shelf{border-top:1px solid var(--k-rule);max-width:1320px;margin:0 auto;padding:clamp(72px,8vw,112px) 32px}.k-section-heading{grid-template-columns:minmax(260px,1fr) minmax(280px,.8fr);align-items:end;gap:56px;margin-bottom:48px;display:grid}.k-section-heading h2{font-family:var(--k-display);font-size:var(--fs-headline);font-weight:var(--fw-display);line-height:var(--lh-headline);letter-spacing:var(--tr-display);margin:0}.k-section-heading p{max-width:54ch;color:var(--k-muted);font-size:var(--fs-small);margin:0;line-height:1.65}.k-curriculum-list{border-top:1px solid var(--k-rule)}.k-curriculum-list a{border-bottom:1px solid var(--k-rule);color:var(--k-ink);grid-template-columns:70px 1fr auto;align-items:center;gap:28px;padding:28px 8px;text-decoration:none;display:grid}.k-curriculum-list>a>span{color:var(--k-accent);font:500 var(--fs-micro) / 1 var(--c-font-mono)}.k-curriculum-list p{color:var(--k-muted);font:500 var(--fs-micro) / 1 var(--c-font-mono);text-transform:uppercase;margin:0 0 8px}.k-curriculum-list h3{font-family:var(--k-display);font-size:var(--fs-section);font-weight:var(--fw-display);line-height:var(--lh-headline);letter-spacing:var(--tr-display);margin:0 0 8px}.k-curriculum-list small{max-width:75ch;color:var(--k-muted);font-size:var(--fs-caption);line-height:1.5;display:block}.k-curriculum-list>a>i{color:var(--k-accent);font-style:normal;font-size:var(--fs-lead)}.k-curriculum-list a:hover h3{color:var(--k-accent)}.k-protocol-shelf{background:var(--k-surface);max-width:none;padding-inline:max(32px,50vw - 628px)}.k-protocol-list{background:var(--k-rule);border:1px solid var(--k-rule);grid-template-columns:repeat(3,1fr);gap:1px;display:grid}.k-protocol-list a{min-height:340px;color:var(--k-ink);background:#fff;flex-direction:column;padding:32px;text-decoration:none;display:flex}.k-protocol-list>a>span{color:var(--k-accent);font:600 var(--fs-micro) / 1 var(--c-font-mono);letter-spacing:.1em}.k-protocol-list h3{font-family:var(--k-display);font-size:var(--fs-section);font-weight:var(--fw-display);letter-spacing:var(--tr-display);margin:48px 0 18px}.k-protocol-list p{color:var(--k-muted);font-size:var(--fs-small);margin:0;line-height:1.6}.k-protocol-list small{color:var(--k-muted);font:500 var(--fs-micro) / 1 var(--c-font-mono);justify-content:space-between;margin-top:auto;padding-top:32px;display:flex}.k-protocol-list i{color:var(--k-accent);font-style:normal}.k-protocol-list a:hover h3{color:var(--k-accent)}@media (max-width:1050px){.k-hero-grid{grid-template-columns:1fr}.k-visual{min-height:300px}.k-article-layout{grid-template-columns:180px minmax(0,1fr);gap:48px}.k-related{grid-template-columns:1fr;gap:36px}.k-start{grid-template-columns:60px 1fr}.k-start-path{grid-column:2}}@media (max-width:820px){.k-article-layout{padding-inline:24px;display:block}.k-toc{background:var(--k-surface);margin-bottom:48px;padding:22px;position:static}.k-toc ol{grid-template-columns:1fr 1fr;display:grid}.k-hub-hero{grid-template-columns:1fr;min-height:auto}.k-hub-hero>p{margin:0}.k-section-heading{grid-template-columns:1fr;gap:22px}.k-protocol-list{grid-template-columns:1fr}.k-protocol-list a{min-height:280px}}@media (max-width:620px){.k-article-hero{padding-inline:20px}.k-breadcrumbs{margin-bottom:36px}.k-hero-copy h1,.k-hub-hero h1{font-size:var(--fs-headline);letter-spacing:var(--tr-display)}.k-meta{gap:8px;display:grid}.k-meta span+span:before{display:none}.k-visual{min-height:auto;padding:18px}.k-visual-stack>div{display:block}.k-visual-stack>div span{margin-bottom:8px;display:block}.k-visual-lanes{grid-template-columns:1fr 1fr;overflow-x:auto}.k-lane{min-width:190px;padding:20px 14px}.k-visual-policy{grid-template-columns:1fr}.k-visual-policy>.k-visual-arrow{text-align:center;transform:rotate(90deg)}.k-visual-policy>div{min-height:120px}.k-boundary{display:block}.k-boundary span{margin-bottom:8px;display:block}.k-visual-http>div{padding:16px;display:block}.k-visual-http span{margin-top:8px;display:block}.k-visual-compare{grid-template-columns:1fr 1fr}.k-compare-shared{grid-area:2/1/auto/-1;min-height:140px}.k-answer{padding:24px 20px}.k-toc ol{grid-template-columns:1fr}.k-takeaways,.k-section,.k-sources{padding-top:52px}.k-section>p{font-size:var(--fs-body)}.k-steps li{grid-template-columns:34px 1fr}.k-steps small{grid-column:2}.k-sources a{display:block}.k-sources a small{text-align:left;margin-top:7px;display:block}.k-related{padding-inline:22px}.k-related-links a{grid-template-columns:1fr auto}.k-related-links span{grid-column:1/-1}.k-hub-hero{padding-inline:22px}.k-start{padding-inline:22px;display:block}.k-start-index{font-size:var(--fs-section);margin-bottom:24px}.k-start-path{margin-top:36px;padding:22px 20px}.k-start-path li{grid-template-columns:18px minmax(0,1fr)}.k-start-path li b,.k-start-path li span{grid-column:2}.k-curriculum,.k-protocol-shelf{padding-inline:22px}.k-curriculum-list a{grid-template-columns:40px 1fr auto;gap:14px;padding-block:24px}.k-curriculum-list small{display:none}}@media (prefers-reduced-motion:reduce){.k-article *,.k-hub *{scroll-behavior:auto!important;transition:none!important;animation:none!important}}