:root {
  --ground: #fafaf9;
  --surface: #f5f5f4;
  --ink: #111111;
  --muted: #595959;
  --accent: #111111;
  --accent-hover: #000000;
  --line: #d6d3d1;
  --amber: #595959;
  --status-green: #595959;
  --status-red: #595959;
  color-scheme: light;
  font-family:
    "IBM Plex Sans",
    -apple-system,
    BlinkMacSystemFont,
    system-ui,
    "Segoe UI",
    sans-serif;
  color: var(--ink);
  background: var(--ground);
  font-size: 112.5%;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  scrollbar-color: var(--line) var(--ground);
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
}
button, input, select, textarea { font: inherit; }
a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  color: var(--accent-hover);
}
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}
::selection {
  background: #dedede;
  color: var(--ink);
}
h1,
h2,
h3,
h4,
p {
  margin: 0;
}
h1,
h2,
h3,
h4 {
  font-weight: 600;
  line-height: 1.3;
  text-wrap: balance;
}
h1 {
  font-size: clamp(2rem, 3.5vw, 2.45rem);
  letter-spacing: -0.02em;
}
h2 {
  font-size: 1.5rem;
}
h3 {
  font-size: 1.2rem;
}
img,
svg {
  max-width: 100%;
  --media-grayscale: 1;
  filter: grayscale(var(--media-grayscale));
}
:is(img, svg):is(:hover, :focus-visible),
:is(a, button, summary, figure, .project-item, .gear-tile, .inventory-card, .diagram, dialog[open]):is(:hover, :focus-within) :is(img, svg) {
  --media-grayscale: 0;
}
code,
pre {
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}
code {
  font-size: 0.88em;
}
.skip-link {
  position: fixed;
  top: 8px;
  left: 16px;
  z-index: 20;
  padding: 8px 12px;
  background: var(--ground);
  transform: translateY(-200%);
}
.skip-link:focus {
  transform: none;
}
.page-shell {
  width: min(100% - 80px, 1160px);
  margin: auto;
}
.site-header {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 36px 0 30px;
  border-bottom: 1px solid var(--line);
}
.site-mark {
  color: var(--ink);
  font-size: 1.25rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}
.desktop-nav {
  display: flex;
  justify-content: flex-end;
  gap: 24px;
  flex: 1;
}
.desktop-nav a,
.mobile-menu nav a,
.explore-menu summary {
  color: var(--muted);
  font-size: 0.8rem;
  text-decoration: none;
}
nav a[aria-current] {
  color: var(--ink);
  font-weight: 600;
}
.mobile-menu {
  display: none;
}
.explore-menu { position: relative; }
.explore-menu summary {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  cursor: pointer;
}
.explore-menu summary::-webkit-details-marker { display: none; }
.explore-menu[data-active] summary { color: var(--ink); font-weight: 600; }
.explore-links {
  position: absolute;
  top: calc(100% + 16px);
  right: 0;
  z-index: 15;
  display: flex;
  flex-direction: column;
  min-width: 180px;
  padding: 8px;
  border: 1px solid var(--line);
  background: var(--ground);
}
.explore-links a { padding: 10px 12px; min-height: 44px; }
.explore-links a:hover { background: var(--surface); color: var(--ink); }
main {
  min-height: 70vh;
  padding-bottom: 96px;
}
.intro,
.page-heading {
  padding: 84px 0 56px;
  max-width: 850px;
}
.intro h1 {
  max-width: 24ch;
  font-size: clamp(2.25rem, 4.5vw, 2.9rem);
  line-height: 1.16;
  letter-spacing: -0.025em;
}
.profile,
.page-heading > p:not(.kicker) {
  margin-top: 22px;
  color: var(--muted);
  max-width: 62ch;
}
.author-note {
  margin-top: 20px;
  color: var(--muted);
  font-size: 0.8rem;
}
.intro .author-note a { display: inline-block; margin-left: 12px; }
.intro-links { gap: 28px; margin-top: 26px; }
.home-columns {
  display: grid;
  grid-template-columns: minmax(0, 1.8fr) minmax(0, 1fr);
  gap: 72px;
  margin-top: 32px;
}
.home-columns > section { min-width: 0; }
.home-notes .post-item { grid-template-columns: 1fr; gap: 10px; }
.home-notes .post-item .post-meta {
  grid-column: 1;
  grid-row: 2;
  flex-direction: row;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  text-align: left;
  padding: 0;
}
.home-notes .post-item p { grid-row: 3; }
.project-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 48px; }
.project-list-compact { display: block; }
.project-item { min-width: 0; padding-top: 24px; border-top: 1px solid var(--line); }
.project-list-compact .project-item { padding: 30px 0; }
.project-preview { display: block; margin-bottom: 24px; }
.project-preview img,
.project-cover { display: block; width: 100%; height: auto; border-radius: 12px; }
.project-preview:focus-visible { border-radius: 12px; }
.project-identity { display: flex; align-items: center; gap: 14px; }
.project-icon { flex: 0 0 48px; border-radius: 10px; }
.project-identity h2 { font-size: 1.5rem; }
.project-identity h3 { font-size: 1.25rem; }
.project-status,
.project-tags { color: var(--muted); font-size: 0.8rem; }
.project-description { color: var(--muted); margin-top: 16px; max-width: 58ch; }
.project-tags { margin-top: 14px; }
.project-actions { display: flex; flex-wrap: wrap; gap: 4px 20px; margin-top: 12px; }
.project-link { display: inline-flex; align-items: center; font-size: 0.85rem; min-height: 44px; }
.building-onward { color: var(--muted); margin-top: 40px; font-size: 0.85rem; }
.home-building .building-onward { margin-top: 0; }
.project-entry { max-width: 820px; margin: auto; padding-top: 60px; }
.project-entry .entry-header h1 { margin-top: 28px; }
.entry-header .project-facts { display: flex; flex-wrap: wrap; gap: 12px 24px; margin-top: 18px; font-size: 0.8rem; }
.project-cover { margin: 12px 0 36px; }
.project-entry .link-row a { min-height: 44px; display: inline-flex; align-items: center; }
.project-entry .link-row { margin-top: 14px; }
.title-link { display: inline-flex; align-items: baseline; gap: 8px; max-width: 100%; }
.title-link > span { min-width: 0; }
.kicker {
  display: none;
}
.chart-section {
  margin-top: 32px;
}
.section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-bottom: 18px;
}
.section-heading h2 {
  font-size: 0.8rem;
  color: var(--muted);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.section-heading a,
.back-link {
  font-size: 0.8rem;
  text-decoration: none;
}
.post-item {
  display: grid;
  grid-template-columns: 1fr 190px;
  gap: 8px 32px;
  border-top: 1px solid var(--line);
  padding: 30px 0;
}
.post-item .post-meta {
  grid-column: 2;
  grid-row: 1 / span 2;
  display: flex;
  flex-direction: column;
  gap: 5px;
  align-items: flex-end;
  text-align: right;
  padding-top: 2px;
}
.post-meta {
  font-size: 0.8rem;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.post-meta time {
  font-variant-numeric: tabular-nums;
}
.post-item h2,
.post-item h3 {
  grid-column: 1;
  grid-row: 1;
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.4;
}
.post-item h2 a,
.post-item h3 a {
  color: var(--ink);
  text-decoration: none;
}
.post-item a:hover {
  color: var(--accent);
}
.post-item p {
  grid-column: 1;
  grid-row: 2;
  color: var(--muted);
  font-size: 1rem;
  max-width: 65ch;
}
.link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 24px;
  font-size: 0.85rem;
}
.link-row a {
  text-decoration: none;
}
.site-footer {
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 30px 0 42px;
  font-size: 0.8rem;
  color: var(--muted);
}
.footer-actions {
  display: flex;
  align-items: center;
  gap: 24px;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}
.footer-links a {
  color: var(--muted);
  text-decoration: none;
}
.article-layout {
  padding-top: 60px;
}
.article-layout.has-contents {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 48px;
}
.article-layout:has(.diagram) { display: block; }
.article-layout:has(.diagram) .entry,
.article-layout:has(.diagram) .prose { max-width: none; }
.article-layout:has(.diagram) .entry-header,
.article-layout:has(.diagram) .prose > :not(.diagram),
.article-layout:has(.diagram) .contents-rail { max-width: 70ch; margin-left: auto; margin-right: auto; }
.article-layout:has(.diagram) .contents-rail {
  top: 0;
  z-index: 10;
  max-height: 60dvh;
  margin-bottom: 28px;
  padding: 12px 0;
  background: var(--ground);
  border-bottom: 1px solid var(--line);
}
.article-layout:has(.diagram) .contents-rail summary {
  pointer-events: auto;
  cursor: pointer;
  margin: 0;
  list-style: disclosure-closed inside;
}
.article-layout:has(.diagram) .contents-rail details[open] summary {
  list-style: disclosure-open inside;
  margin-bottom: 12px;
}
.contents-rail {
  position: sticky;
  top: 24px;
  align-self: start;
  max-height: calc(100dvh - 48px);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
  font-size: 0.85rem;
}
.contents-rail summary {
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 18px;
  list-style: none;
  pointer-events: none;
}
.contents-rail summary::-webkit-details-marker {
  display: none;
}
.contents-rail nav {
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--line);
}
.contents-rail a {
  padding: 7px 0 7px 14px;
  color: var(--muted);
  text-decoration: none;
}
.contents-rail a[data-depth="3"] {
  padding-left: 26px;
  font-size: 0.8rem;
}
.contents-rail a[aria-current] {
  color: var(--ink);
  font-weight: 600;
  box-shadow: -1px 0 var(--ink);
}
.entry {
  width: 100%;
  max-width: 820px;
  min-width: 0;
  margin: auto;
}
.entry-header {
  padding: 0 0 30px;
}
.entry-header h1 {
  font-size: clamp(2rem, 3.5vw, 2.45rem);
  margin: 24px 0 18px;
}
.entry-header .post-meta {
  margin-top: 20px;
}
.entry-header > p:not(.post-meta) {
  color: var(--muted);
  font-size: 1rem;
}
.prose {
  max-width: 70ch;
  font-size: 1rem;
  line-height: 1.75;
  overflow-wrap: anywhere;
}
.prose p {
  margin-bottom: 22px;
}
.prose h2 {
  font-size: 1.55rem;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin: 56px 0 18px;
  scroll-margin-top: 80px;
}
.prose h3 {
  font-size: 1.2rem;
  margin: 38px 0 14px;
  scroll-margin-top: 80px;
}
.prose ul,
.prose ol {
  padding-left: 20px;
  margin: 16px 0;
}
.prose li {
  margin: 6px 0;
}
.prose blockquote {
  margin: 24px 0;
  padding-left: 16px;
  border-left: 1px solid var(--line);
  color: var(--muted);
}
.prose pre {
  overflow: auto;
  max-width: 100%;
  padding: 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  margin: 24px 0;
}
.prose .astro-code, .prose .astro-code span {
  color: var(--shiki-light);
  background-color: var(--shiki-light-bg);
  font-style: var(--shiki-light-font-style);
  font-weight: var(--shiki-light-font-weight);
  text-decoration: var(--shiki-light-text-decoration);
}
.prose pre code { font-size: 0.88rem; line-height: 1.65; }
.prose table {
  display: block;
  overflow: auto;
  border-collapse: collapse;
}
.prose td,
.prose th {
  padding: 10px 12px 10px 0;
  text-align: left;
  border-bottom: 1px solid var(--line);
}
.prose .diagram {
  width: min(100%, calc(var(--diagram-width, 100%) + 34px));
  margin: 24px auto;
  padding: 16px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
}
.article-layout:has(.diagram) .prose .diagram {
  width: min(calc(var(--diagram-width, 100%) + 34px), calc(100vw - 80px));
  position: relative;
  left: 50%;
  transform: translateX(-50%);
  margin-left: 0;
  margin-right: 0;
}
.prose .diagram svg {
  display: block;
  width: var(--diagram-width, auto);
  max-width: none;
  height: auto;
  margin: auto;
}
.prose .diagram svg text {
  font-family: inherit !important;
}
.inventory-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 40px;
}
.inventory-card {
  padding: 30px 0;
  border-top: 1px solid var(--line);
  min-width: 0;
}
.inventory-card p,
.item-list,
.status-row p {
  color: var(--muted);
  font-size: 1rem;
  margin-top: 12px;
}
.item-list {
  padding-left: 20px;
}
.item-list li {
  margin: 6px 0;
}
.empty-state {
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  max-width: 820px;
}
.empty-state p {
  color: var(--muted);
  margin-top: 12px;
}
.empty-marker {
  display: none;
}
.empty-onward {
  display: inline-block;
  margin-top: 16px;
}
.status-row {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  border-top: 1px solid var(--line);
  padding: 26px 0;
}
.status-label {
  font-size: 0.8rem;
  color: var(--muted);
}
.status-label[data-status="operational"] {
  color: var(--status-green);
}
.status-label[data-status="outage"] {
  color: var(--status-red);
}
.status-label[data-status="degraded"] {
  color: var(--amber);
}
@media (max-width: 900px) {
  .home-columns { gap: 40px; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); }
  .desktop-nav {
    gap: 12px;
  }
  .site-header {
    gap: 16px;
  }
  .inventory-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 760px) {
  .article-layout:has(.diagram) .prose .diagram { width: min(calc(var(--diagram-width, 100%) + 26px), calc(100vw - 40px)); }
  .prose .diagram { padding: 12px; }
  .home-columns { grid-template-columns: 1fr; gap: 48px; margin-top: 20px; }
  .project-list { grid-template-columns: 1fr; gap: 40px; }
  .project-entry { padding-top: 28px; }
  .intro .author-note a { margin-left: 0; display: block; margin-top: 8px; }
  .intro-links { gap: 12px 24px; }
  .intro-links a { min-height: 44px; display: inline-flex; align-items: center; }
  .page-shell {
    width: calc(100% - 40px);
  }
  .site-header {
    padding: 24px 0;
    justify-content: space-between;
  }
  .site-mark {
    font-size: 1.1rem;
  }
  .desktop-nav {
    display: none;
  }
  .mobile-menu {
    display: block;
    position: relative;
  }
  .mobile-menu summary {
    min-height: 44px;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    cursor: pointer;
    color: var(--muted);
  }
  .mobile-menu nav a {
    padding: 10px 8px;
    min-height: 44px;
  }
  .mobile-menu nav {
    position: absolute;
    right: 0;
    top: 44px;
    width: 180px;
    z-index: 15;
    background: var(--ground);
    border: 1px solid var(--line);
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
  }
  .intro,
  .page-heading {
    padding: 48px 0 36px;
  }
  .intro h1 {
    font-size: clamp(2rem, 7.5vw, 2.4rem);
  }
  .post-item {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 26px 0;
  }
  .post-item .post-meta {
    grid-column: 1;
    grid-row: 2;
    flex-direction: row;
    align-items: baseline;
    text-align: left;
    font-size: 0.8rem;
  }
  .post-item p {
    grid-row: 3;
  }
  .post-item h2,
  .post-item h3 {
    font-size: 1.2rem;
  }
  .site-footer {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }
  .footer-actions { justify-content: space-between; gap: 12px; }
  .footer-links { gap: 8px 16px; }
  .footer-links a { display: inline-flex; align-items: center; min-height: 44px; }
  .article-layout,
  .article-layout.has-contents {
    display: block;
    padding-top: 28px;
  }
  .contents-rail {
    top: 0;
    z-index: 10;
    max-height: 60dvh;
    background: var(--ground);
    border-bottom: 1px solid var(--line);
    margin-bottom: 28px;
    padding: 12px 0;
  }
  .contents-rail summary {
    pointer-events: auto;
    cursor: pointer;
    margin: 0;
    list-style: disclosure-closed inside;
  }
  .contents-rail details[open] summary {
    list-style: disclosure-open inside;
    margin-bottom: 12px;
  }
  .entry-header h1 {
    font-size: 2rem;
  }
  .inventory-grid {
    grid-template-columns: 1fr;
  }
  .status-row {
    flex-direction: column;
    gap: 12px;
  }
}
@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    animation: none !important;
    transition: none !important;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --ground: #151515;
  --surface: #202020;
  --ink: #f5f5f4;
  --muted: #b5b5b5;
  --accent: #f5f5f4;
  --accent-hover: #ffffff;
  --line: #414141;
  --amber: #b5b5b5;
  --status-green: #b5b5b5;
  --status-red: #b5b5b5;
}
::selection { background: var(--ink); color: var(--ground); }
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 44px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--ink);
  background: transparent;
  cursor: pointer;
}
.theme-toggle:hover { background: var(--surface); }
.theme-toggle svg { width: 20px; height: 20px; }
.site-header { gap: 20px; }
.mobile-menu { margin-left: auto; }
:root[data-theme="dark"] .astro-code,
:root[data-theme="dark"] .astro-code span {
  color: var(--shiki-dark);
  background-color: var(--shiki-dark-bg);
  font-style: var(--shiki-dark-font-style);
  font-weight: var(--shiki-dark-font-weight);
  text-decoration: var(--shiki-dark-text-decoration);
}
:root[data-theme="dark"] .diagram svg { filter: invert(1) grayscale(var(--media-grayscale)); }