/* ═══ KLEISLI-BRAND-BASE ═══ */
body { background: var(--color-background); color: var(--color-text); }
::selection { background: rgba(94, 234, 212, 0.3); color: var(--color-heading); }
html { scroll-behavior: smooth; scroll-padding-top: 6.5rem; }
.code-surface { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: 2px; font-family: var(--font-mono); font-size: 0.9rem; line-height: 1.7; }
.accent-line { width: 40px; height: 2px; background: var(--color-accent); }
.hr-subtle { border: none; height: 1px; background: var(--color-border); margin: 0; }
.section-label { font-family: var(--font-mono); font-size: var(--font-caption); letter-spacing: 0.15em; text-transform: uppercase; color: var(--color-muted); }

/* ═══ BRAND-NAV ═══ */
.brand-nav { display: flex; justify-content: space-between; align-items: center; padding: 2rem 1.5rem; gap: 1.5rem; position: sticky; top: 0; left: 0; right: 0; z-index: 50; background-color: var(--color-background); }
@media (min-width: 768px) {
  .brand-nav { padding: 2rem 4rem; }
}
@media (min-width: 1024px) {
  .brand-nav { padding: 2rem 6rem; }
}
.brand-nav-mark { font-family: var(--font-mono); font-size: var(--font-caption); letter-spacing: 0.15em; text-transform: uppercase; color: var(--color-heading); transition: color 0.3s cubic-bezier(0.16,1,0.3,1); }
.brand-nav-mark:hover { color: var(--color-accent); }
.brand-nav-links { display: flex; align-items: center; gap: 2rem; }
.brand-nav-link { font-family: var(--font-mono); font-size: var(--font-caption); letter-spacing: 0.15em; text-transform: uppercase; color: var(--color-muted); transition: color 0.3s cubic-bezier(0.16,1,0.3,1); }
.brand-nav-link:hover { color: var(--color-accent); }
.brand-nav-link.active { color: var(--color-accent); }
.brand-nav-toggle { display: none; }
.brand-nav-toggle-bar { display: block; width: 18px; height: 1.5px; background: currentColor; border-radius: 1px; transition: transform 0.25s cubic-bezier(0.16,1,0.3,1), opacity 0.18s ease; }
.brand-nav-drawer { display: none; }
.brand-nav-drawer-backdrop { position: absolute; inset: 0; background: rgba(8,12,20,0.6); }
.brand-nav-drawer-panel { position: absolute; top: 0; right: 0; height: 100%; width: min(86vw, 320px); background: var(--color-background); border-left: 1px solid var(--color-border); box-shadow: -20px 0 60px rgba(0,0,0,0.35); display: flex; flex-direction: column; padding: 1.5rem 1.5rem 2rem; gap: 1.25rem; overflow-y: auto; }
.brand-nav-drawer-header { display: flex; align-items: center; justify-content: space-between; }
.brand-nav-drawer-title { font-family: var(--font-mono); font-size: var(--font-caption); letter-spacing: 0.12em; text-transform: uppercase; color: var(--color-muted); }
.brand-nav-drawer-close { background: transparent; border: none; padding: 0.5rem; margin: -0.5rem; line-height: 0; color: var(--color-text); cursor: pointer; border-radius: 4px; transition: color 0.2s ease, background 0.2s ease; }
.brand-nav-drawer-close:hover { color: var(--color-accent); }
.brand-nav-drawer-close:focus-visible { outline: 1px solid var(--color-accent); outline-offset: 2px; }
.brand-nav-drawer-links { display: flex; flex-direction: column; gap: 0; padding-top: 0.5rem; border-top: 1px solid var(--color-border); }
.brand-nav-drawer-link { font-family: var(--font-mono); font-size: 1rem; letter-spacing: 0.06em; color: var(--color-text); padding: 0.85rem 0; border-bottom: 1px solid var(--color-border); transition: color 0.2s cubic-bezier(0.16,1,0.3,1); }
.brand-nav-drawer-link:hover { color: var(--color-accent); }
.brand-nav-drawer-link.active { color: var(--color-accent); }
.brand-nav-drawer-cluster { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; padding-top: 0.75rem; }
.brand-nav-drawer-cluster-label { font-family: var(--font-mono); font-size: var(--font-caption); text-transform: uppercase; letter-spacing: 0.12em; color: var(--color-muted); }
.brand-nav-drawer-link--source { margin-top: auto; padding-top: 1rem; border-top: 1px solid var(--color-border); border-bottom: none; font-size: var(--font-caption); text-transform: uppercase; letter-spacing: 0.12em; color: var(--color-muted); }
@media (max-width: 767px) {
  .brand-nav { padding: 1.25rem 1.25rem; gap: 0.75rem; }
  .brand-nav .brand-nav-links { display: none; }
  .brand-nav .brand-nav-cluster { display: none; }
  .brand-nav .brand-nav-toggle { display: inline-flex; flex-direction: column; justify-content: center; align-items: center; gap: 5px; width: 44px; height: 44px; padding: 0; margin-left: auto; background: transparent; border: 1px solid var(--color-border); border-radius: 6px; color: var(--color-text); cursor: pointer; transition: border-color 0.2s ease, color 0.2s ease; }
  .brand-nav .brand-nav-toggle:hover { border-color: var(--color-accent); color: var(--color-accent); }
  .brand-nav .brand-nav-toggle:focus-visible { outline: 1px solid var(--color-accent); outline-offset: 2px; }
  .brand-nav .brand-nav-drawer { display: block; position: fixed; inset: 0; z-index: 100; opacity: 0; pointer-events: none; transition: opacity 0.22s ease; }
  .brand-nav .brand-nav-drawer-panel { transform: translateX(100%); transition: transform 0.32s cubic-bezier(0.16,1,0.3,1); will-change: transform; }
  .brand-nav.is-open .brand-nav-drawer { opacity: 1; pointer-events: auto; }
  .brand-nav.is-open .brand-nav-drawer-panel { transform: translateX(0); }
  .brand-nav.is-open .brand-nav-toggle-bar:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
  .brand-nav.is-open .brand-nav-toggle-bar:nth-child(2) { opacity: 0; }
  .brand-nav.is-open .brand-nav-toggle-bar:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
  body.kleisli-nav-drawer-open { overflow: hidden; }
}

/* ═══ BRAND-THEME-TOGGLE ═══ */
.brand-nav-cluster { display: flex; align-items: center; gap: 1.25rem; }
.theme-toggle { display: inline-flex; align-items: center; border: 1px solid var(--color-border); border-radius: 6px; padding: 2px; background: transparent; }
.theme-toggle-button { display: inline-flex; align-items: center; justify-content: center; width: 1.75rem; height: 1.5rem; padding: 0; background: transparent; border: none; border-radius: 4px; color: var(--color-muted); cursor: pointer; transition: color 0.2s cubic-bezier(0.16,1,0.3,1), background 0.2s cubic-bezier(0.16,1,0.3,1); }
.theme-toggle-button:hover { color: var(--color-text); }
.theme-toggle-button[aria-checked="true"] { color: var(--color-heading); background: var(--color-surface); }
.theme-toggle-button:focus-visible { outline: 1px solid var(--color-accent); outline-offset: 1px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* ═══ BRAND-FOOTER ═══ */
.brand-footer { display: flex; flex-direction: column; gap: 2rem; padding: 5rem 1.5rem 3rem; border-top: 1px solid var(--color-border); }
@media (min-width: 768px) {
  .brand-footer { flex-direction: row; justify-content: space-between; align-items: center; padding: 5rem 4rem 3rem; }
}
@media (min-width: 1024px) {
  .brand-footer { padding: 5rem 6rem 3rem; }
}
.brand-footer-identity { display: flex; align-items: center; gap: 0.75rem; }
.brand-footer-name { font-family: var(--font-mono); font-size: 1rem; color: var(--color-heading); letter-spacing: 0.05em; }
.brand-footer-logo { vertical-align: middle; }
.brand-footer-links { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 2.5rem; }
.brand-footer-link { font-family: var(--font-mono); font-size: var(--font-small); color: var(--color-muted); transition: color 0.3s cubic-bezier(0.16,1,0.3,1); }
.brand-footer-link:hover { color: var(--color-heading); }
.brand-footer-cluster { display: flex; flex-direction: column; gap: 0.75rem; align-items: flex-start; }
@media (min-width: 768px) {
  .brand-footer-cluster { align-items: flex-end; }
}
.brand-footer-ai { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; font-family: var(--font-mono); font-size: var(--font-caption); color: var(--color-muted); opacity: 0.7; }
.brand-footer-ai-label { text-transform: uppercase; letter-spacing: 0.08em; }
.brand-footer-ai-link { color: var(--color-muted); text-decoration: underline; text-underline-offset: 2px; transition: color 0.3s cubic-bezier(0.16,1,0.3,1); }
.brand-footer-ai-link:hover { color: var(--color-heading); }
.brand-footer-ai-sep { opacity: 0.5; }
.brand-footer-ai-tools { opacity: 0.85; }

/* ═══ KLEISLI-CONTENT-PROSE ═══ */
.prose { overflow-wrap: break-word; }
.prose h2 { font-family: var(--font-heading); font-size: var(--font-h2); color: var(--color-heading); margin-top: 3rem; margin-bottom: 0.75rem; line-height: 1.3; letter-spacing: -0.015em; }
.prose h3 { font-family: var(--font-heading); font-size: 1.25rem; color: var(--color-heading); margin-top: 2rem; margin-bottom: 0.5rem; letter-spacing: -0.01em; }
.prose h4 { font-family: var(--font-heading); font-size: 1.125rem; color: var(--color-heading); font-weight: 600; margin-top: 1.5rem; margin-bottom: 0.5rem; }
.prose h5 { font-family: var(--font-heading); font-size: 1rem; color: var(--color-heading); font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; margin-top: 1.25rem; margin-bottom: 0.5rem; }
.prose h6 { font-family: var(--font-mono); font-size: var(--font-caption); color: var(--color-muted); text-transform: uppercase; letter-spacing: 0.05em; margin-top: 1.25rem; margin-bottom: 0.5rem; }
.prose h2 a.heading-anchor, .prose h3 a.heading-anchor { color: inherit; text-decoration: none; position: relative; }
.prose h2 a.heading-anchor::before, .prose h3 a.heading-anchor::before { content: '#'; position: absolute; left: -1.25rem; color: var(--color-accent-dim); opacity: 0; transition: opacity 0.15s; }
.prose h2:hover a.heading-anchor::before, .prose h3:hover a.heading-anchor::before { opacity: 0.7; }
.prose p { font-family: var(--font-body); font-size: var(--font-body-size); color: var(--color-text); line-height: 1.75; margin-bottom: 1.5rem; }
.prose a { color: var(--color-accent); text-decoration: none; transition: text-decoration-color 0.3s; }
.prose a:hover { text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--color-accent-dim); }
.prose strong { color: var(--color-heading); font-weight: 600; }
.prose code { font-family: var(--font-mono); font-size: 0.875em; color: var(--color-text); background: var(--color-code-inline-bg); border: 1px solid var(--color-code-inline-border); padding: 0.15em 0.4em; border-radius: 4px; }
.prose .codeblock { background: var(--color-code-bg); border: 1px solid var(--color-code-border); border-radius: 8px; margin: 2rem 0; overflow: hidden; }
.prose .codeblock-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 0.5rem; padding: 0.4rem 0.75rem; border-bottom: 1px solid var(--color-code-border); font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-muted); }
.prose .codeblock-lang { color: var(--color-muted); }
.prose .codeblock-actions { display: flex; gap: 0.5rem; opacity: 0; transition: opacity 0.2s; }
.prose .codeblock:hover .codeblock-actions { opacity: 1; }
.prose .codeblock:focus-within .codeblock-actions { opacity: 1; }
.prose .codeblock-action { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-muted); background: transparent; border: 1px solid var(--color-code-border); border-radius: 2px; padding: 0.15rem 0.5rem; cursor: pointer; transition: color 0.2s, border-color 0.2s; }
.prose .codeblock-action:hover { color: var(--color-accent); border-color: var(--color-accent); }
.prose .codeblock pre { background: none; border: none; border-radius: 0; padding: 1.25rem 1.5rem; margin: 0; overflow-x: auto; line-height: 1.7; scrollbar-width: thin; scrollbar-color: var(--color-scrollbar-thumb) transparent; }
.prose .codeblock pre::-webkit-scrollbar { height: 6px; }
.prose .codeblock pre::-webkit-scrollbar-track { background: transparent; }
.prose .codeblock pre::-webkit-scrollbar-thumb { background: var(--color-scrollbar-thumb); border-radius: 3px; }
.prose .codeblock pre::-webkit-scrollbar-thumb:hover { background: var(--color-scrollbar-thumb-hover); }
.prose .codeblock pre code { background: none; padding: 0; color: var(--color-text); font-size: 0.875rem; border: none; border-radius: 0; }
.prose blockquote { border-left: 2px solid var(--color-accent); padding-left: 1.25rem; margin: 1.5rem 0; color: var(--color-muted); font-style: italic; }
.prose ul { list-style: disc; padding-left: 1.5rem; margin-bottom: 1.25rem; }
.prose ol { list-style: decimal; padding-left: 1.5rem; margin-bottom: 1.25rem; }
.prose li { font-family: var(--font-body); font-size: var(--font-body-size); color: var(--color-text); line-height: 1.75; margin-bottom: 0.5rem; }
.prose hr { border: none; height: 1px; background: var(--color-border); margin: 2rem 0; }
.prose img { max-width: 100%; height: auto; display: block; margin: 1.5rem auto; border-radius: 6px; }
.prose kbd { font-family: var(--font-mono); font-size: 0.85em; background: var(--color-code-inline-bg); border: 1px solid var(--color-code-inline-border); border-bottom-width: 2px; padding: 0.1em 0.4em; border-radius: 4px; color: var(--color-text); }
.prose mark { background: rgba(94,234,212,0.18); color: var(--color-text); padding: 0.05em 0.2em; border-radius: 2px; }
.prose figure:not(.codeblock) { margin: 1.5rem auto; text-align: center; }
.prose figure:not(.codeblock) img { margin: 0 auto; }
.prose figure:not(.codeblock) figcaption { font-family: var(--font-mono); font-size: var(--font-caption); color: var(--color-muted); margin-top: 0.5rem; line-height: 1.5; }
.prose .katex-display { overflow-x: auto; overflow-y: hidden; }
.prose :not(.katex-display) > .katex { display: inline-block; max-width: 100%; overflow-x: auto; overflow-y: hidden; vertical-align: bottom; }
.prose .task-list-item { list-style: none; margin-left: -1.5rem; padding-left: 0; }
.prose .task-list-item input[type=checkbox] { margin-right: 0.5em; vertical-align: baseline; accent-color: var(--color-accent); }
.prose .footnote-ref { font-size: 0.75em; vertical-align: super; line-height: 1; margin-left: 0.1em; }
.prose .footnote-ref a { text-decoration: none; color: var(--color-accent); }
.prose .footnote-ref a:hover { text-decoration: underline; }
.prose .footnotes { margin-top: 3rem; font-size: 0.9em; color: var(--color-muted); }
.prose .footnotes hr { margin-bottom: 1rem; }
.prose .footnotes ol { padding-left: 1.25rem; }
.prose .footnotes li { margin-bottom: 0.5rem; color: var(--color-muted); }
.prose .footnote-back { margin-left: 0.25em; text-decoration: none; color: var(--color-accent); }
.prose .footnote-back:hover { text-decoration: underline; }
.admonition { border-left: 3px solid var(--color-accent); background: var(--color-surface); padding: 1rem 1.25rem; margin: 1.5rem 0; border-radius: 0 6px 6px 0; }
.admonition-title { font-family: var(--font-mono); font-size: var(--font-small); color: var(--color-accent); font-weight: 600; margin-bottom: 0.5rem; text-transform: uppercase; letter-spacing: 0.04em; }
.admonition > p:last-child { margin-bottom: 0; }
.admonition-note { border-left-color: #3b82f6; }
.admonition-note .admonition-title { color: #3b82f6; }
.admonition-tip { border-left-color: #10b981; }
.admonition-tip .admonition-title { color: #10b981; }
.admonition-important { border-left-color: #8b5cf6; }
.admonition-important .admonition-title { color: #8b5cf6; }
.admonition-warning { border-left-color: #f59e0b; }
.admonition-warning .admonition-title { color: #f59e0b; }
.admonition-caution { border-left-color: #ef4444; }
.admonition-caution .admonition-title { color: #ef4444; }
.prose .codeblock .k { color: var(--color-syntax-keyword); }
.prose .codeblock .kc { color: var(--color-syntax-keyword); }
.prose .codeblock .kd { color: var(--color-syntax-keyword); }
.prose .codeblock .kn { color: var(--color-syntax-keyword); }
.prose .codeblock .kp { color: var(--color-syntax-keyword); }
.prose .codeblock .kr { color: var(--color-syntax-keyword); }
.prose .codeblock .kt { color: var(--color-syntax-type); }
.prose .codeblock .s { color: var(--color-syntax-string); }
.prose .codeblock .sa { color: var(--color-syntax-string); }
.prose .codeblock .sb { color: var(--color-syntax-string); }
.prose .codeblock .sc { color: var(--color-syntax-string); }
.prose .codeblock .s1 { color: var(--color-syntax-string); }
.prose .codeblock .s2 { color: var(--color-syntax-string); }
.prose .codeblock .sd { color: var(--color-syntax-string); }
.prose .codeblock .se { color: var(--color-syntax-string); }
.prose .codeblock .sh { color: var(--color-syntax-string); }
.prose .codeblock .si { color: var(--color-syntax-string); }
.prose .codeblock .sr { color: var(--color-syntax-string); }
.prose .codeblock .ss { color: var(--color-syntax-string); }
.prose .codeblock .sx { color: var(--color-syntax-string); }
.prose .codeblock .c { color: var(--color-syntax-comment); font-style: italic; }
.prose .codeblock .c1 { color: var(--color-syntax-comment); font-style: italic; }
.prose .codeblock .cm { color: var(--color-syntax-comment); font-style: italic; }
.prose .codeblock .cp { color: var(--color-syntax-comment); }
.prose .codeblock .cs { color: var(--color-syntax-comment); font-style: italic; }
.prose .codeblock .cpf { color: var(--color-syntax-comment); }
.prose .codeblock .m { color: var(--color-syntax-number); }
.prose .codeblock .mi { color: var(--color-syntax-number); }
.prose .codeblock .mf { color: var(--color-syntax-number); }
.prose .codeblock .mh { color: var(--color-syntax-number); }
.prose .codeblock .mo { color: var(--color-syntax-number); }
.prose .codeblock .mb { color: var(--color-syntax-number); }
.prose .codeblock .il { color: var(--color-syntax-number); }
.prose .codeblock .n { color: var(--color-syntax-name); }
.prose .codeblock .na { color: var(--color-syntax-variable); }
.prose .codeblock .nb { color: var(--color-syntax-builtin); }
.prose .codeblock .nc { color: var(--color-syntax-type); }
.prose .codeblock .nd { color: var(--color-syntax-function); }
.prose .codeblock .ne { color: var(--color-syntax-type); }
.prose .codeblock .nf { color: var(--color-syntax-function); }
.prose .codeblock .nl { color: var(--color-syntax-name); }
.prose .codeblock .nn { color: var(--color-syntax-type); }
.prose .codeblock .no { color: var(--color-syntax-variable); }
.prose .codeblock .nt { color: var(--color-syntax-keyword); }
.prose .codeblock .nv { color: var(--color-syntax-variable); }
.prose .codeblock .nx { color: var(--color-syntax-name); }
.prose .codeblock .py { color: var(--color-syntax-name); }
.prose .codeblock .o { color: var(--color-syntax-operator); }
.prose .codeblock .ow { color: var(--color-syntax-keyword); }
.prose .codeblock .p { color: var(--color-syntax-punctuation); }
.prose .codeblock .err { color: var(--color-syntax-error); }
.prose .codeblock .gh { color: var(--color-syntax-keyword); font-weight: 600; }
.prose .codeblock .gp { color: var(--color-syntax-comment); }
.prose .codeblock .gs { font-weight: 600; }
.prose .codeblock .ge { font-style: italic; }
.prose .codeblock .gi { color: var(--color-success); }
.prose .codeblock .gd { color: var(--color-error); }
.prose .codeblock .gr { color: var(--color-syntax-error); }
.prose .codeblock .gt { color: var(--color-syntax-error); }

/* ═══ BASE ═══ */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: auto; }
body { font-family: var(--font-body); font-size: var(--font-base); line-height: var(--font-leading-normal); color: var(--color-text); background: var(--color-background); overflow-x: hidden; }
h1, h2, h3 { font-family: var(--font-family); font-weight: var(--font-light); line-height: var(--font-leading-tight); letter-spacing: var(--font-tracking-tight); }
a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-heading); }
::selection { background: rgba(94,234,212,0.20); color: #fff; }

/* ═══ AURORA-CANVAS ═══ */
#aurora-canvas { position: fixed; top: 0; left: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; }

/* ═══ GRAIN ═══ */
@keyframes grain-shift { 0% { transform: translate(0,0); } 10% { transform: translate(-5%,-10%); } 30% { transform: translate(3%,-15%); } 50% { transform: translate(12%,9%); } 70% { transform: translate(9%,4%); } 90% { transform: translate(-1%,7%); } 100% { transform: translate(0,0); } }
.grain-filter-svg { position: fixed; pointer-events: none; }
.grain-overlay { position: fixed; top: -50%; left: -50%; width: 200%; height: 200%; z-index: 5; pointer-events: none; opacity: 0.025; filter: url(#grain-filter); animation: grain-shift 0.8s steps(4) infinite; }
@media (prefers-reduced-motion: reduce) {
  .grain-overlay { animation: none; opacity: 0.015; }
}

/* ═══ CONTENT ═══ */
.content-layer { position: relative; z-index: 10; text-shadow: 0 0 18px rgba(10,14,26,0.92); }

/* ═══ APEX-NAV ═══ */
.apex-nav { position: sticky; top: 0; left: 0; right: 0; display: flex; align-items: center; gap: 1.5rem; padding: 1.25rem 1.5rem; z-index: 50; background-color: rgba(10,14,26,0.55); transition: background-color 200ms ease, border-color 200ms ease; }
@media (min-width: 768px) {
  .apex-nav { padding: 1.5rem 4rem; gap: 2.5rem; }
}
@media (min-width: 1024px) {
  .apex-nav { padding: 1.5rem 6rem; gap: 3rem; }
}
.apex-nav--static { background-color: rgba(10,14,26,0.88); border-bottom: 1px solid rgba(234,229,216,0.08); }
.apex-nav-mark { font-family: var(--font-mono); font-size: var(--font-caption); letter-spacing: 0.12em; text-transform: uppercase; color: rgba(234,229,216,0.55); transition: color 150ms ease-out; }
.apex-nav-mark:hover { color: var(--color-heading); }
.apex-nav-cluster { display: flex; align-items: center; gap: 1rem; }
@media (min-width: 768px) {
  .apex-nav-cluster { gap: 1.5rem; }
}
.apex-nav-cluster--siblings { margin-left: auto; }
.apex-nav-divider { width: 1px; height: 20px; background-color: rgba(234,229,216,0.20); display: inline-block; flex-shrink: 0; }
.apex-nav-link { font-family: var(--font-mono); font-size: 0.6rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-muted); padding: 0.5rem 0.75rem; border-radius: 3px; transition: color 150ms ease-out, background-color 150ms ease-out; }
@media (min-width: 768px) {
  .apex-nav-link { font-size: var(--font-caption); letter-spacing: 0.12em; }
}
.apex-nav-link:hover { color: var(--color-heading); }
.apex-nav-link.active { color: var(--color-primary); background-color: rgba(94,234,212,0.12); }
.apex-nav-toggle { display: none; }
.apex-nav-toggle-bar { display: block; width: 18px; height: 1.5px; background: currentColor; border-radius: 1px; transition: transform 0.25s cubic-bezier(0.16,1,0.3,1), opacity 0.18s ease; }
.apex-nav-drawer { display: none; }
.apex-nav-drawer-backdrop { position: absolute; inset: 0; background: rgba(8,12,20,0.65); }
.apex-nav-drawer-panel { position: absolute; top: 0; right: 0; height: 100%; width: min(86vw, 320px); background: rgba(10,14,26,0.97); border-left: 1px solid rgba(234,229,216,0.08); box-shadow: -20px 0 60px rgba(0,0,0,0.4); display: flex; flex-direction: column; padding: 1.5rem 1.5rem 2rem; gap: 1.25rem; overflow-y: auto; }
.apex-nav-drawer-header { display: flex; align-items: center; justify-content: space-between; }
.apex-nav-drawer-title { font-family: var(--font-mono); font-size: var(--font-caption); letter-spacing: 0.12em; text-transform: uppercase; color: rgba(234,229,216,0.55); }
.apex-nav-drawer-close { background: transparent; border: none; padding: 0.5rem; margin: -0.5rem; line-height: 0; color: var(--color-heading); cursor: pointer; border-radius: 4px; transition: color 0.2s ease, background 0.2s ease; }
.apex-nav-drawer-close:hover { color: var(--color-primary); }
.apex-nav-drawer-close:focus-visible { outline: 1px solid var(--color-primary); outline-offset: 2px; }
.apex-nav-drawer-links { display: flex; flex-direction: column; padding-top: 0.5rem; }
.apex-nav-drawer-links:last-of-type { flex-grow: 1; }
.apex-nav-drawer-link { font-family: var(--font-mono); font-size: 1rem; letter-spacing: 0.06em; text-transform: lowercase; color: rgba(234,229,216,0.85); padding: 0.85rem 0; border-bottom: 1px solid rgba(234,229,216,0.06); transition: color 0.2s cubic-bezier(0.16,1,0.3,1); }
.apex-nav-drawer-link:hover { color: var(--color-primary); }
.apex-nav-drawer-link.active { color: var(--color-primary); }
.apex-nav-drawer-link--source { margin-top: auto; padding-top: 1rem; border-top: 1px solid rgba(234,229,216,0.08); border-bottom: none; font-size: var(--font-caption); text-transform: uppercase; letter-spacing: 0.12em; color: rgba(234,229,216,0.55); }
@media (max-width: 767px) {
  .apex-nav .apex-nav-cluster--routes { display: none; }
  .apex-nav .apex-nav-cluster--siblings { display: none; }
  .apex-nav .apex-nav-divider { display: none; }
  .apex-nav .apex-nav-toggle { display: inline-flex; flex-direction: column; justify-content: center; align-items: center; gap: 5px; width: 44px; height: 44px; padding: 0; margin-left: auto; background: transparent; border: 1px solid rgba(234,229,216,0.18); border-radius: 6px; color: var(--color-heading); cursor: pointer; transition: border-color 0.2s ease, color 0.2s ease; }
  .apex-nav .apex-nav-toggle:hover { border-color: var(--color-primary); color: var(--color-primary); }
  .apex-nav .apex-nav-toggle:focus-visible { outline: 1px solid var(--color-primary); outline-offset: 2px; }
  .apex-nav .apex-nav-drawer { display: block; position: fixed; inset: 0; z-index: 100; opacity: 0; pointer-events: none; transition: opacity 0.22s ease; }
  .apex-nav .apex-nav-drawer-panel { transform: translateX(100%); transition: transform 0.32s cubic-bezier(0.16,1,0.3,1); will-change: transform; }
  .apex-nav.is-open .apex-nav-drawer { opacity: 1; pointer-events: auto; }
  .apex-nav.is-open .apex-nav-drawer-panel { transform: translateX(0); }
  .apex-nav.is-open .apex-nav-toggle-bar:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
  .apex-nav.is-open .apex-nav-toggle-bar:nth-child(2) { opacity: 0; }
  .apex-nav.is-open .apex-nav-toggle-bar:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
}

/* ═══ HERO ═══ */
.hero-section { min-height: 100vh; display: flex; flex-direction: column; justify-content: flex-end; padding: 0 1.5rem 4rem; position: relative; z-index: 10; }
@media (min-width: 768px) {
  .hero-section { padding: 0 4rem 6rem; }
}
@media (min-width: 1024px) {
  .hero-section { padding: 0 6rem 6rem; }
}
.hero-content { max-width: 64rem; }
.hero-title { font-family: var(--font-display); font-size: min(calc((100vw - 3rem) / 10), 12rem); line-height: 0.85; letter-spacing: -0.04em; color: var(--color-heading); }
@media (min-width: 768px) {
  .hero-title { font-size: min(calc((100vw - 8rem) / 10), 12rem); }
}
@media (min-width: 1024px) {
  .hero-title { font-size: min(calc((100vw - 12rem) / 10), 12rem); }
}
@keyframes hero-enter { from { opacity: 0; filter: blur(8px); transform: translateY(12px); } to { opacity: 1; filter: blur(0px); transform: translateY(0); } }
@keyframes hero-fade { from { opacity: 0; } to { opacity: 1; } }
.hero-enter { opacity: 0; animation: hero-enter 1.2s cubic-bezier(0.16,1,0.3,1) forwards; }
.hero-enter-1 { animation-delay: 0.2s; }
.hero-enter-2 { animation: hero-fade 1.8s cubic-bezier(0.22,0.61,0.36,1) 0.85s forwards; }
@media (prefers-reduced-motion: reduce) {
  .hero-enter { animation: none; opacity: 1; }
  .hero-enter-2 { animation: none; opacity: 1; }
}
.hero-tagline { font-family: var(--font-family); font-size: clamp(1.25rem, 2.5vw, 1.75rem); font-weight: 300; line-height: 1.4; color: var(--color-heading); margin-top: 2rem; }
.hero-sub { font-family: var(--font-body); font-size: 1.0625rem; font-weight: 400; line-height: 1.6; color: var(--color-muted); margin-top: 1rem; max-width: 36rem; }
@media (max-width: 767px) {
  .hero-section { min-height: 0; height: calc(100vh - 5.25rem - env(safe-area-inset-bottom, 0px)); height: calc(100svh - 5.25rem); padding-bottom: 5rem; }
}

/* ═══ THESIS ═══ */
.thesis-section { height: 100vh; display: flex; align-items: center; padding: 0 1.5rem; }
@media (min-width: 768px) {
  .thesis-section { padding: 0 4rem; }
}
@media (min-width: 1024px) {
  .thesis-section { padding: 0 6rem; }
}
.thesis-content { max-width: 48rem; }
.thesis-text { font-family: var(--font-body); font-size: clamp(1.25rem, 2vw, 1.5rem); font-weight: 400; line-height: 1.85; color: var(--color-text); }
@media (max-width: 1023px) {
  .thesis-section { height: auto; padding: 6rem 1.5rem; }
}

/* ═══ EYEBROW ═══ */
.eyebrow { font-family: var(--font-mono); font-size: var(--font-caption); font-weight: 400; letter-spacing: 0.12em; text-transform: uppercase; color: var(--color-primary-dim); margin-bottom: 1.5rem; display: block; }

/* ═══ SECTION-TYPE ═══ */
.section-heading { font-family: var(--font-family); font-size: var(--font-h1); font-weight: 400; color: var(--color-heading); line-height: 1.15; margin-bottom: 2rem; }
.section-heading-sm { font-family: var(--font-body); font-size: var(--font-h2); font-weight: 400; color: var(--color-heading); line-height: 1.2; margin-bottom: 1.5rem; }
.section-body { font-family: var(--font-body); font-size: var(--font-base); font-weight: 400; color: var(--color-text); line-height: 1.85; margin-bottom: 1.5rem; }
.section-body-muted { font-family: var(--font-body); font-size: var(--font-base); font-weight: 400; color: var(--color-muted); line-height: 1.85; margin-bottom: 1.5rem; }
.section-body-credential { font-family: var(--font-body); font-size: var(--font-base); font-weight: 400; font-style: italic; color: var(--color-muted); line-height: 1.85; margin-bottom: 2rem; }

/* ═══ TEXT-LINKS ═══ */
.text-link { font-family: var(--font-mono); font-size: var(--font-small); color: var(--color-primary); transition: color 0.3s cubic-bezier(0.16,1,0.3,1); }
.text-link:hover { color: var(--color-heading); }
.nix-effects-links { display: flex; flex-direction: column; gap: 0.5rem; margin-top: 1.5rem; }

/* ═══ NIX-EFFECTS ═══ */
.nix-effects-section { position: relative; padding: 6rem 1.5rem; }
@media (min-width: 768px) {
  .nix-effects-section { padding: 8rem 4rem; }
}
@media (min-width: 1024px) {
  .nix-effects-section { padding: 6rem 6rem; }
}
.nix-heading { font-family: var(--font-body); font-size: var(--font-h1); font-weight: 400; color: var(--color-heading); line-height: 1.15; margin-bottom: 3rem; max-width: 48rem; }
.nix-effects-triptych { display: grid; grid-template-columns: 1fr; gap: 2.5rem; align-items: start; }
@media (min-width: 1024px) {
  .nix-effects-triptych { grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 3rem; }
}
.nix-effects-source { margin: 0; min-width: 0; }
.nix-excerpt { font-family: var(--font-mono); font-size: clamp(10px, 0.9vw, 11.5px); line-height: 1.65; color: #c8c4bc; background: rgba(12,14,20,0.55); padding: 1.5rem 1.75rem; border-left: 1px solid rgba(94,234,212,0.22); border-radius: 2px; overflow-x: auto; white-space: pre; backdrop-filter: blur(6px); margin: 0; scrollbar-width: thin; scrollbar-color: rgba(94,234,212,0.3) transparent; }
.nix-excerpt::-webkit-scrollbar { height: 4px; }
.nix-excerpt::-webkit-scrollbar-thumb { background: rgba(94,234,212,0.3); border-radius: 2px; }
.nix-effects-outputs { display: flex; flex-direction: column; gap: 1.75rem; min-width: 0; }
.nix-handler-display { margin: 0; padding-left: 1.25rem; border-left: 1px solid rgba(94,234,212,0.22); }
.nix-handler-label { font-family: var(--font-mono); font-size: var(--font-caption); letter-spacing: 0.08em; text-transform: lowercase; color: var(--color-primary-dim); margin-bottom: 0.5rem; }
.nix-handler-output { font-family: var(--font-mono); font-size: clamp(10px, 0.9vw, 11.5px); line-height: 1.65; color: #c8c4bc; white-space: pre; overflow-x: auto; margin: 0; scrollbar-width: thin; scrollbar-color: rgba(94,234,212,0.3) transparent; }
.nix-handler-output::-webkit-scrollbar { height: 4px; }
.nix-handler-output::-webkit-scrollbar-thumb { background: rgba(94,234,212,0.3); border-radius: 2px; }
.nix-effects-provenance { display: flex; flex-direction: column; gap: 0.5rem; margin: 2.5rem 0 2rem 0; padding-top: 1rem; border-top: 1px solid var(--color-border); }
@media (min-width: 1024px) {
  .nix-effects-provenance { flex-direction: row; justify-content: space-between; align-items: baseline; gap: 2rem; }
}
.nix-effects-reproduce { font-family: var(--font-mono); font-size: var(--font-caption); color: var(--color-primary-dim); white-space: pre-wrap; }
.nix-effects-rev-link { font-family: var(--font-mono); font-size: var(--font-caption); color: var(--color-muted); border-bottom: 1px dotted var(--color-border); transition: color 0.3s cubic-bezier(0.16,1,0.3,1); }
.nix-effects-rev-link:hover { color: var(--color-primary); }
.nix-effects-prose { max-width: 42rem; }
.nix-effects-prose .section-body { margin-bottom: 1.25rem; }
.nix-effects-prose .section-body:last-child { margin-bottom: 0; }
.nix-effects-prose code { font-family: var(--font-mono); font-size: 0.9em; color: var(--color-primary-dim); }
.code-kw { color: #A78BFA; }
.code-type { color: #5EEAD4; }
.code-str { color: #34D399; }
.code-comment { color: #5A6B7A; font-style: italic; }
@media (max-width: 640px) {
  .nix-excerpt { font-size: clamp(12px, 3.2vw, 14px); padding: 1rem 1.25rem; }
  .nix-handler-output { font-size: clamp(12px, 3.2vw, 14px); }
}

/* ═══ KLI ═══ */
.kli-section { position: relative; padding: 6rem 1.5rem; }
@media (min-width: 768px) {
  .kli-section { padding: 8rem 4rem; }
}
@media (min-width: 1024px) {
  .kli-section { padding: 6rem 6rem; }
}
.kli-heading { font-family: var(--font-body); font-size: var(--font-h1); font-weight: 400; color: var(--color-heading); line-height: 1.15; margin-top: 0; margin-bottom: 2rem; }
.kli-inner { display: grid; grid-template-columns: 1fr; gap: 2.5rem; align-items: start; }
@media (min-width: 1024px) {
  .kli-inner { grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 3rem; }
  .kli-stream-col { grid-column: 1; grid-row: 1; min-width: 0; }
  .kli-prose-col { grid-column: 2; grid-row: 1; min-width: 0; }
}
.kli-links { margin-top: 1.75rem; }
.event-stream { display: flex; flex-direction: column; padding: 1.25rem 0 0.25rem 0; border-top: 1px solid rgba(94,234,212,0.22); }
.event-line { display: grid; grid-template-columns: 3.25rem 7.5rem 1fr; column-gap: 1rem; padding: 0.4rem 0; align-items: baseline; opacity: 0; transform: translateX(-8px); transition: opacity 500ms ease, transform 500ms ease; }
.event-line.is-visible { opacity: 1; transform: none; }
.event-time { font-family: var(--font-mono); font-size: var(--font-caption); letter-spacing: 0.04em; color: var(--color-muted); }
.event-type { font-family: var(--font-mono); font-size: var(--font-caption); letter-spacing: 0.04em; color: var(--color-primary-dim); }
.event-payload { font-family: var(--font-mono); font-size: var(--font-caption); color: var(--color-text); overflow-wrap: anywhere; }
.event-obs { font-family: var(--font-body); font-size: var(--font-small); font-style: italic; line-height: 1.5; color: var(--color-text); }
@media (max-width: 640px) {
  .event-line { grid-template-columns: 2.75rem 6rem 1fr; column-gap: 0.5rem; }
}
@media (prefers-reduced-motion: reduce) {
  .event-line { opacity: 1; transform: none; transition: none; }
}

/* ═══ LSC ═══ */
.lsc-section { position: relative; }
.lsc-panel { height: 100vh; display: flex; flex-direction: column; justify-content: center; align-items: center; padding: 2rem 1.5rem; text-align: center; overflow: hidden; }
@media (min-width: 768px) {
  .lsc-panel { padding: 2rem 4rem; }
}
.lsc-phase { will-change: opacity, transform; }
.lsc-heading { font-family: var(--font-family); font-size: var(--font-h1); font-weight: 400; line-height: 1.2; color: var(--color-heading); max-width: 44rem; margin-top: 1.5rem; }
.lsc-punch { font-family: var(--font-body); font-size: 1.125rem; font-weight: 400; color: var(--color-text); margin-top: 2rem; line-height: 1.6; }
.lsc-institutions { display: flex; align-items: center; justify-content: center; gap: 3rem; margin-top: 3rem; flex-wrap: wrap; }
.lsc-inst { font-family: var(--font-mono); font-size: var(--font-caption); letter-spacing: 0.06em; color: var(--color-muted); opacity: 0.45; }
@media (prefers-reduced-motion: reduce) {
  .lsc-phase { opacity: 1; transform: none; }
}
@media (max-width: 1023px) {
  .lsc-section { padding: 6rem 1.5rem; }
  .lsc-panel { height: auto; padding: 0; }
}

/* ═══ RESEARCH ═══ */
.research-section { padding: var(--space-section) 1.5rem; }
@media (min-width: 768px) {
  .research-section { padding: var(--space-section) 4rem; }
}
@media (min-width: 1024px) {
  .research-section { padding: var(--space-section) 6rem; max-width: 56rem; }
}
.research-items { display: flex; flex-direction: column; gap: 2.5rem; margin-top: 1rem; }
.research-item { padding-left: 1rem; border-left: 2px solid var(--color-primary-dim); }
.research-item-muted { opacity: 0.5; border-left-color: var(--color-border); }
.research-item-date { font-family: var(--font-mono); font-size: var(--font-caption); letter-spacing: 0.08em; color: var(--color-primary); display: block; }
.research-item-muted .research-item-date { color: var(--color-muted); }
.research-item-title { font-family: var(--font-family); font-size: 1rem; font-weight: 400; color: var(--color-heading); display: block; margin-top: 0.25rem; }
.research-item-meta { font-family: var(--font-body); font-size: var(--font-small); color: var(--color-muted); display: block; margin-top: 0.25rem; line-height: 1.6; }

/* ═══ WRITING ═══ */
.writing-section { padding: var(--space-section) 1.5rem; }
@media (min-width: 768px) {
  .writing-section { padding: var(--space-section) 4rem; }
}
@media (min-width: 1024px) {
  .writing-section { padding: var(--space-section) 6rem; }
}
.writing-grid { display: grid; grid-template-columns: 1fr; gap: 1.25rem; margin-top: 1.5rem; }
@media (min-width: 768px) {
  .writing-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
}
@media (min-width: 1024px) {
  .writing-grid { grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
}
.post-card { display: flex; flex-direction: column; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: 4px; overflow: hidden; transition: border-color 0.3s cubic-bezier(0.16,1,0.3,1), transform 0.3s cubic-bezier(0.16,1,0.3,1); }
.post-card:hover { border-color: var(--color-primary-dim); transform: translateY(-2px); }
.post-card-graphic { aspect-ratio: 3 / 2; background: var(--color-background); overflow: hidden; display: flex; align-items: center; justify-content: center; }
.post-card-graphic svg { width: 100%; height: 100%; transition: transform 0.4s cubic-bezier(0.16,1,0.3,1), filter 0.4s cubic-bezier(0.16,1,0.3,1); }
.post-card:hover .post-card-graphic svg { transform: scale(1.03); filter: brightness(1.1); }
.post-card-body { padding: 1.25rem 1.5rem 1.5rem; }
.post-card-meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.5rem; }
.post-card-tag { font-family: var(--font-mono); font-size: var(--font-caption); text-transform: uppercase; letter-spacing: 0.08em; }
.post-card-date { font-family: var(--font-mono); font-size: var(--font-caption); letter-spacing: 0.08em; color: var(--color-muted); }
.post-card-title { font-family: var(--font-family); font-size: 1.125rem; font-weight: 400; color: var(--color-heading); line-height: 1.35; transition: color 0.3s cubic-bezier(0.16,1,0.3,1); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.post-card:hover .post-card-title { color: var(--color-primary); }
.post-card-desc { font-family: var(--font-body); font-size: var(--font-small); color: var(--color-muted); line-height: 1.65; margin-top: 0.5rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ═══ CONSULTING ═══ */
.consulting-section { padding: clamp(8rem, 18vh, 14rem) 1.5rem; }
@media (min-width: 768px) {
  .consulting-section { padding: clamp(8rem, 18vh, 14rem) 4rem; }
}
@media (min-width: 1024px) {
  .consulting-section { padding: clamp(8rem, 18vh, 14rem) 6rem; }
}
.consulting-content { max-width: 36rem; margin: 0 auto; text-align: center; }
.consulting-heading { font-family: var(--font-family); font-size: var(--font-h2); font-weight: 400; color: var(--color-heading); line-height: 1.3; }
.consulting-heading + .section-body { margin-top: 2.5rem; }
.consulting-cta { display: flex; flex-direction: column; align-items: center; gap: 1rem; margin-top: 2rem; }
@media (min-width: 640px) {
  .consulting-cta { flex-direction: row; justify-content: center; }
}
.consulting-institutions { display: flex; align-items: center; justify-content: center; gap: 2rem; margin-top: 1.5rem; margin-bottom: 1.5rem; flex-wrap: wrap; }
.consulting-inst { font-family: var(--font-mono); font-size: var(--font-caption); letter-spacing: 0.06em; color: var(--color-muted); opacity: 0.65; }
.section-tail-link { margin-top: 1.5rem; text-align: center; }
.magnetic-btn { position: relative; display: inline-block; overflow: hidden; will-change: transform; --glow-x: 50%; --glow-y: 50%; }
.magnetic-btn::after { content: ''; position: absolute; inset: 0; border-radius: inherit; background: radial-gradient(circle at var(--glow-x) var(--glow-y), rgba(232,200,138,0.25) 0%, rgba(232,200,138,0) 65%); opacity: 0; transition: opacity 0.3s ease; pointer-events: none; }
.magnetic-btn.is-hovering::after { opacity: 1; }
.warm-btn { font-family: var(--font-mono); font-size: var(--font-small); letter-spacing: 0.08em; padding: 0.875rem 2rem; background: var(--color-warm); color: var(--color-background); border: 1px solid var(--color-warm); border-radius: 2px; transition: opacity 0.15s ease; cursor: pointer; }
.warm-btn:hover { opacity: 0.85; }
.outline-btn { font-family: var(--font-mono); font-size: var(--font-small); letter-spacing: 0.08em; padding: 0.875rem 2rem; background: transparent; color: var(--color-primary); border: 1px solid var(--color-primary-dim); border-radius: 2px; transition: border-color 0.3s ease, color 0.3s ease; cursor: pointer; }
.outline-btn:hover { border-color: var(--color-primary); color: var(--color-heading); }
@media (prefers-reduced-motion: reduce) {
  .magnetic-btn { will-change: auto; transform: none !important; }
  .magnetic-btn::after { display: none; }
}
@media (hover: none) {
  .magnetic-btn { will-change: auto; }
}

/* ═══ FOOTER-OVERRIDE ═══ */
.brand-footer { position: relative; z-index: 10; }