@media (prefers-color-scheme: light) {
  :root {
    color-scheme: light;
    --paper: #f7f6f1;
    --ink: #1b221e;
    --muted: #61685e;
    --line: #d5d8cf;
    --wash: #eeefe8;
    --panel: #e8ece2;
    --accent: #365d83;
  }
}

.maintenance-wrap { width: min(100% - 2 * clamp(19px, 5.3vw, 70px), 1180px); margin-inline: auto; }
.maintenance-skip { position: fixed; top: 8px; left: 8px; z-index: 3; transform: translateY(-150%); background: var(--ink); color: var(--paper); padding: 8px 14px; }
.maintenance-skip:focus { transform: none; }
.maintenance-header { border-bottom: 1px solid var(--line); }
.maintenance-header > div { min-height: 64px; display: flex; justify-content: space-between; align-items: center; gap: 18px; }
.maintenance-brand { font-size: .8rem; letter-spacing: .08em; font-weight: 700; }
.maintenance-home { display: inline-flex; align-items: center; min-height: 44px; gap: 8px; font-size: .85rem; color: var(--muted); }
.maintenance-home span { color: var(--accent); }
.maintenance-hero { background: var(--wash); border-bottom: 1px solid var(--line); padding: clamp(32px, 7vw, 77px) 0 28px; }
.maintenance-crumbs { display: flex; align-items: center; gap: 10px; margin-bottom: 20px; font-size: .85rem; color: var(--muted); }
.maintenance-crumbs a { text-decoration: underline; text-underline-offset: 3px; }
.maintenance-hero h1 { font-size: clamp(2.4rem, 7vw, 4.65rem); line-height: 1.15; letter-spacing: -.035em; font-weight: 590; }
.maintenance-subtitle { color: var(--muted); font-size: clamp(1rem, 2.4vw, 1.32rem); margin: 16px 0 24px; }
.maintenance-meta { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.maintenance-meta p { display: flex; gap: 14px; font-size: .88rem; color: var(--muted); }
.maintenance-meta strong { color: var(--accent); }
.maintenance-download { background: var(--ink); color: var(--paper); min-height: 44px; display: inline-flex; align-items: center; justify-content: space-between; gap: 15px; padding: 8px 15px; font-size: .9rem; font-weight: 650; }
.maintenance-download:hover { opacity: .86; }
.maintenance-reading { display: grid; grid-template-columns: 226px minmax(0, 1fr); gap: clamp(28px, 5.2vw, 70px); align-items: start; padding-block: 36px 70px; }
.maintenance-reading > aside { position: sticky; top: 30px; }
.maintenance-toc { border-left: 1px solid var(--line); padding-left: 18px; }
.maintenance-toc h2 { font-size: 1rem; margin-bottom: 10px; }
.maintenance-toc ol { padding-left: 1.3em; margin: 0; }
.maintenance-toc li { padding-left: 4px; color: var(--muted); font-size: .88rem; }
.maintenance-toc a { display: inline-block; padding: 5px 0; }
.maintenance-toc a:hover { color: var(--accent); }
.maintenance-prose { min-width: 0; font-size: 1rem; line-height: 1.85; overflow-wrap: anywhere; }
.maintenance-prose p { margin: 0 0 17px; }
.maintenance-prose :is(h2,h3) { line-height: 1.42; }
.maintenance-prose h2 { font-size: clamp(1.38rem, 3.6vw, 1.9rem); margin: 38px 0 15px; padding-top: 20px; border-top: 1px solid var(--line); }
.maintenance-prose h3 { font-size: 1.14rem; margin: 26px 0 10px; }
.maintenance-prose a { color: var(--accent); text-decoration: underline; text-underline-offset: 4px; }
.maintenance-prose a:has(> img) { display: block; cursor: zoom-in; }
.maintenance-prose img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; border: 1px solid var(--line); background: white; }
.maintenance-prose table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: .92rem; line-height: 1.7; }
.maintenance-prose :is(th,td) { text-align: left; padding: 10px 12px; vertical-align: top; border: 1px solid var(--line); }
.maintenance-prose th { background: var(--wash); }
.maintenance-prose td:first-child { min-width: 7em; }
.maintenance-prose :is(ol,ul) { padding-left: 1.4em; }
.maintenance-prose li + li { margin-top: 8px; }
.maintenance-prose pre { padding: 16px; overflow: auto; max-width: 100%; font-size: .83rem; background: var(--wash); border: 1px solid var(--line); }
.maintenance-prose p:has(> em:first-child) { color: var(--muted); font-size: .88rem; }
.maintenance-footer { display: flex; flex-wrap: wrap; gap: 14px 24px; justify-content: space-between; padding: 24px 0 42px; border-top: 1px solid var(--line); color: var(--muted); font-size: .86rem; }
.maintenance-footer a { text-decoration: underline; text-underline-offset: 4px; }

.maintenance-diagram { width: min(96vw, 1460px); max-width: 96vw; max-height: 94dvh; margin: auto; padding: 0; border: 1px solid var(--line); border-radius: 9px; background: var(--paper); color: var(--ink); }
.maintenance-diagram::backdrop { background: #060909c9; }
.maintenance-diagram > header { display: flex; flex-wrap: wrap; gap: 10px 20px; align-items: center; justify-content: space-between; padding: 12px; }
.maintenance-diagram h2 { font-size: 1rem; }
.maintenance-diagram-controls { display: flex; align-items: center; gap: 5px; flex-wrap: wrap; }
.maintenance-diagram-controls :is(a, button) { display: inline-grid; place-items: center; min-width: 40px; min-height: 40px; padding: 3px 7px; color: var(--ink); background: var(--wash); border: 1px solid var(--line); font-size: .85rem; }
.maintenance-diagram-controls button:disabled { opacity: .48; }
.maintenance-diagram-controls output { min-width: 43px; text-align: center; font-size: .82rem; }
.maintenance-diagram-view { width: 100%; height: min(76dvh, 760px); overflow: auto; background: #fff; }
.maintenance-diagram-view img { display: block; max-width: none; margin-inline: auto; height: auto; }

@media (max-width: 770px) {
  .maintenance-reading { display: block; padding-block: 20px 46px; }
  .maintenance-reading > aside { position: static; margin-bottom: 24px; }
  .maintenance-toc { border: 1px solid var(--line); padding: 12px 14px; }
  .maintenance-toc ol { display: grid; grid-template-columns: 1fr 1fr; gap: 1px 16px; }
  .maintenance-prose table { display: block; overflow-x: auto; }
  .maintenance-prose td:nth-child(n+2) { min-width: 10em; }
  .maintenance-diagram-view { height: 68dvh; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}