:root {
  color-scheme: dark;
  --night: #121c19;
  --chrome: #101915;
  --surface: #19251f;
  --paper: #f0f3e9;
  --body-text: #d5dfd7;
  --quiet: #a2b0a8;
  --rule: #35453d;
  --mint: #d0f5a5;
  --lavender: #c2b8ff;
  --ink: #14271b;
  --sans: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  --mono: Menlo, Consolas, 'Liberation Mono', monospace;
  --sidebar: 288px;
  --header: 64px;
  --ease: cubic-bezier(.2,.75,.2,1);
  font-family: var(--sans);
  background: var(--night);
  color: var(--paper);
  view-transition-name: none;
}
*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; -webkit-font-smoothing: antialiased; }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }
button { color: inherit; }
svg { width: 21px; height: 21px; flex-shrink: 0; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--lavender); outline-offset: 5px; }
::selection { background: var(--lavender); color: var(--ink); }
button:disabled, [aria-disabled="true"] { opacity: .3; cursor: default; }
body, #docs-app { height: 100vh; height: 100dvh; overflow: hidden; }
#docs-app { display: grid; grid-template-rows: var(--header) minmax(0,1fr); }
.skip-link { position: fixed; top: 8px; left: 8px; padding: 15px 22px; border-radius: 12px; color: var(--ink); background: var(--mint); z-index: 100; transform: translateY(-150%); }
.skip-link:focus { transform: none; }
.screen-reader-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; clip-path: inset(50%); overflow: hidden; white-space: nowrap; }

/* Quiet chrome, full-width reading canvas. */
.topbar { display: flex; align-items: center; gap: 25px; padding: 0 24px; background: var(--chrome); border-bottom: 1px solid #2a382f; z-index: 30; min-width: 0; }
.menu-toggle { display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; gap: 10px; height: 37px; padding: 0 13px; border: 1px solid var(--rule); border-radius: 10px; background: transparent; font-size: 12px; transition: background .2s, color .2s, border-color .2s; }
.menu-toggle:hover, .menu-toggle.is-active { background: var(--mint); color: var(--ink); border-color: var(--mint); }
.menu-toggle svg { width: 17px; height: 17px; }
.docs-brand { display: flex; align-items: baseline; flex-shrink: 0; font-size: 21px; font-weight: 650; letter-spacing: -.06em; line-height: 1; }
.docs-brand > span { color: var(--mint); }
.breadcrumbs { display: flex; flex: 1; align-items: center; gap: 10px; min-width: 0; padding-left: 12px; color: var(--quiet); font-size: 11px; white-space: nowrap; }
.breadcrumbs > :first-child { min-width: 0; overflow: hidden; text-overflow: ellipsis; }
.breadcrumbs a:hover { color: var(--mint); }
.breadcrumb-slash { color: #5c6d62; flex-shrink: 0; }
.breadcrumb-current { color: var(--body-text); overflow: hidden; text-overflow: ellipsis; }
.topbar-actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; margin-left: auto; }
.header-action { display: inline-flex; align-items: center; justify-content: center; gap: 13px; height: 38px; padding: 0 16px; border: 1px solid var(--rule); border-radius: 9px; background: transparent; font-size: 12px; font-weight: 500; white-space: nowrap; transition: color .2s, background .2s, border-color .2s; }
.header-action svg { width: 15px; height: 15px; }
.header-buy { border-color: var(--mint); background: var(--mint); color: var(--ink); font-weight: 600; }
.header-buy:hover { background: #e0ffbf; border-color: #e0ffbf; }
.header-question { color: var(--body-text); }
.header-question:hover { color: var(--lavender); border-color: #81779e; background: #211f2d; }
.topbar-actions .icon-button { width: 38px; height: 38px; color: var(--body-text); }
.topbar-actions .header-youtube:hover { color: var(--lavender); }
.topbar-tools { display: flex; align-items: center; gap: 10px; flex-shrink: 0; padding-left: 20px; border-left: 1px solid var(--rule); }
.search-trigger { display: inline-flex; align-items: center; gap: 12px; padding: 0 12px; height: 35px; background: transparent; border: 1px solid #2e3c33; border-radius: 9px; color: var(--quiet); font-size: 11px; white-space: nowrap; }
.search-trigger:hover { background: var(--surface); color: var(--paper); }
.search-trigger svg { width: 15px; height: 15px; }
.search-trigger kbd { margin-left: 12px; font: 10px var(--mono); color: #bac6bd; }
.icon-button { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; border: 0; border-radius: 10px; background: transparent; color: var(--quiet); flex-shrink: 0; }
.icon-button:hover:not([aria-disabled="true"]) { background: var(--surface); color: var(--mint); }
.workspace { display: grid; grid-template-columns: 0 minmax(0,1fr); min-height: 0; position: relative; transition: grid-template-columns 360ms var(--ease); }
.workspace.menu-open { grid-template-columns: var(--sidebar) minmax(0,1fr); }
.reader { position: relative; display: grid; grid-template-rows: minmax(0,1fr) 56px; min-width: 0; min-height: 0; outline: none; }
.reader-scroll { container: reader / inline-size; overflow: auto; min-width: 0; min-height: 0; scrollbar-width: thin; scrollbar-color: #4d6354 transparent; overscroll-behavior: contain; view-transition-name: reading; background: var(--night); }
.page-content { display: grid; min-height: 100%; }
.page-content h1:focus { outline: none; }
.reader.is-pushing { overflow: clip; }
.reader.is-pushing > .reading-nav { position: relative; z-index: 2; }
.turn-snapshot { position: absolute; top: 0; left: 0; z-index: 1; overflow: hidden; pointer-events: none; view-transition-name: none; }
.page-turn-hint { position: absolute; z-index: 10; left: 50%; bottom: 72px; display: flex; align-items: center; gap: 9px; max-width: calc(100% - 40px); padding: 11px 16px 13px; border: 1px solid #4c6647; border-radius: 12px; overflow: hidden; background: #18271ff2; color: var(--mint); box-shadow: 0 6px 24px #080e0b30; font-size: 11px; line-height: 16px; pointer-events: none; opacity: 0; transform: translate(-50%, 6px); transition: opacity 160ms, transform 200ms var(--ease); }
.page-turn-hint[data-direction="back"] { top: 16px; bottom: auto; }
.page-turn-hint.is-visible { opacity: 1; transform: translate(-50%, 0); }
.page-turn-hint svg { width: 16px; height: 16px; transform: rotate(var(--turn-arrow, 90deg)); }
.page-turn-hint::after { content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 2px; background: var(--mint); transform: scaleX(var(--turn-progress, 0)); transform-origin: left; transition: transform 100ms linear; }

/* The sidebar keeps its own width while the track folds away. */
.docs-sidebar { width: var(--sidebar); min-height: 0; display: flex; flex-direction: column; overflow-y: auto; overflow-x: hidden; background: var(--chrome); border-right: 1px solid #2a382f; scrollbar-width: thin; scrollbar-color: #354d3e transparent; overscroll-behavior: contain; transform: translateX(-100%); opacity: 0; visibility: hidden; transition: transform 360ms var(--ease), opacity 230ms, visibility 360ms; }
.menu-open .docs-sidebar { transform: none; opacity: 1; visibility: visible; }
.sidebar-heading { display: flex; align-items: center; justify-content: space-between; padding: 18px 18px 10px 24px; color: var(--quiet); }
.sidebar-heading > span { font: 10px var(--mono); text-transform: uppercase; letter-spacing: .09em; }
.sidebar-heading svg { width: 17px; height: 17px; }
.docs-nav { padding: 0 13px 24px; }
.nav-group { margin: 0 0 21px; }
.nav-group h2 { margin: 0; padding: 12px 12px 9px; color: #809589; font-size: 9px; font-weight: 500; letter-spacing: .13em; text-transform: uppercase; }
.docs-nav ul { list-style: none; padding: 0; margin: 0; }
.nav-link, .nav-folder summary { display: flex; align-items: center; gap: 10px; width: 100%; padding: 10px 12px; border-radius: 9px; font-size: 12px; line-height: 1.4; color: #b6c5bb; transition: background .18s, color .18s; }
.nav-link > span, .nav-folder summary > span:first-of-type { min-width: 0; flex: 1; }
.nav-link > svg, .nav-folder summary > svg { width: 16px; height: 16px; color: #809589; }
.nav-link:hover, .nav-folder summary:hover { background: #1b2b21; color: var(--paper); }
.nav-link.is-active { background: #273b2a; color: var(--mint); }
.nav-link.is-active svg { color: var(--mint); }
.nav-folder summary { list-style: none; cursor: pointer; }
.nav-folder summary::-webkit-details-marker { display: none; }
.nav-folder.has-current > summary { color: var(--paper); }
.nav-folder.has-current > summary > svg { color: var(--mint); }
.nav-count { flex: 0 0 auto; font: 10px var(--mono); color: #8da592; }
.nav-chevron { display: inline-flex; flex: 0 0 auto; transition: transform .22s; }
.nav-chevron svg { width: 12px; height: 12px; }
.nav-folder[open] > summary .nav-chevron { transform: rotate(90deg); }
.docs-nav .nav-children { border-left: 1px solid #314336; margin: 6px 0 10px 20px; padding-left: 9px; }
.nav-children .nav-link { padding: 8px 10px; font-size: 11.5px; line-height: 1.45; }
.nav-children .nav-link[data-nav-id="modes"] { font-size: 10.5px; }
.nav-overview .nav-link { color: #8da592; justify-content: space-between; font-size: 10px; }
.nav-overview svg { width: 13px; height: 13px; }
.sidebar-footer { margin: auto 24px 24px; padding-top: 20px; border-top: 1px solid #2a382f; }
.sidebar-footer > span { display: block; margin-bottom: 7px; font-size: 9px; color: #809589; }
.sidebar-footer a { display: flex; align-items: center; width: fit-content; font-size: 18px; font-weight: 600; letter-spacing: -.055em; }
.sidebar-footer a > span { color: var(--lavender); }
.sidebar-footer svg { margin-left: 13px; width: 15px; height: 15px; color: var(--quiet); }
.menu-scrim { display: none; }

/* Navigation strip: position, chapter index, next page. */
.reading-nav { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 0 26px; border-top: 1px solid #2a382f; background: var(--chrome); min-width: 0; }
.reading-position { display: flex; align-items: center; gap: 16px; min-width: 0; flex: 1; }
.position-index { flex-shrink: 0; font: 10px var(--mono); color: var(--mint); white-space: nowrap; }
.position-index > span { color: #738d7c; }
.reading-position > div { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.position-title { font-size: 11px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--body-text); }
.position-sub { font-size: 9px; color: #82998b; }
.chapter-track { display: flex; align-items: center; justify-content: center; gap: 4px; flex: 0 1 226px; }
.chapter-track a { display: flex; align-items: center; justify-content: center; width: 22px; height: 28px; }
.chapter-track a > span { width: 100%; height: 2px; background: #34463a; transition: background .25s, height .25s; border-radius: 3px; }
.chapter-track a.is-before > span { background: #667e55; }
.chapter-track a.is-current > span { height: 4px; background: var(--mint); }
.chapter-track a:hover > span { background: var(--lavender); height: 4px; }
.page-controls { display: flex; align-items: center; justify-content: flex-end; gap: 13px; flex: 1; min-width: 0; }
.page-prev { width: 33px; height: 33px; border: 1px solid #34463a; }
.page-prev svg { width: 17px; height: 17px; }
.page-next { display: inline-flex; align-items: center; justify-content: space-between; gap: 20px; padding: 0 14px; min-width: 160px; max-width: 260px; height: 35px; border-radius: 9px; color: var(--mint); border: 1px solid #49633d; font-size: 11px; transition: color .2s, background .2s; }
.page-next > span { white-space: nowrap; text-overflow: ellipsis; overflow: hidden; }
.page-next svg { width: 18px; height: 18px; transition: transform .2s var(--ease); }
.page-next:hover { color: var(--ink); background: var(--mint); }
.page-next:hover svg { transform: translateX(3px); }

/* Search and the existing, as-yet unpublished welcome links. */
dialog { color: var(--paper); background: #17241c; border: 1px solid #44553f; border-radius: 22px; padding: 24px; max-width: calc(100vw - 28px); max-height: calc(100dvh - 40px); }
dialog::backdrop { background: #080e0bbd; backdrop-filter: blur(5px); }
.search-dialog { width: 620px; margin: min(15vh,110px) auto auto; }
.search-heading { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-bottom: 16px; }
.search-heading h2 { font-size: 25px; font-weight: 500; letter-spacing: -.05em; margin: 0; }
.search-field { display: flex; align-items: center; gap: 12px; padding: 13px 16px; background: var(--chrome); border: 1px solid var(--rule); border-radius: 11px; }
.search-field:focus-within { border-color: var(--mint); }
.search-field svg { width: 18px; color: var(--mint); }
.search-field input { min-width: 0; width: 100%; background: transparent; border: 0; outline: none; color: var(--paper); font-size: 14px; }
.search-field input::placeholder { color: #869b8d; }
.search-caption { font-size: 10px; color: var(--quiet); margin: 20px 0 12px; }
.search-results { max-height: min(44vh,400px); overflow: auto; padding: 3px; scrollbar-width: thin; scrollbar-color: #465e4b transparent; }
.search-result { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 14px 12px; border-radius: 10px; }
.search-result:hover, .search-result:focus-visible { background: #283c2a; outline: none; }
.search-result strong { display: block; font-size: 14px; font-weight: 500; }
.search-result small { display: block; margin-top: 6px; font-size: 10px; color: var(--quiet); }
.search-result svg { width: 17px; color: var(--mint); }
.search-hint { display: flex; justify-content: space-between; margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--rule); color: #819989; font-size: 10px; }
.search-empty { margin: 24px 10px; font-size: 14px; line-height: 1.5; }
.info-dialog { width: 450px; }
.info-dialog > p { color: var(--body-text); font-size: 16px; line-height: 1.6; margin: 24px 0; }
.info-done { background: var(--mint); color: var(--ink); border: 0; border-radius: 10px; padding: 11px 16px; display: flex; align-items: center; gap: 32px; font-size: 13px; }
.status-toast { position: fixed; right: 24px; bottom: 76px; max-width: min(380px,calc(100vw - 48px)); padding: 14px 18px; border-radius: 12px; background: var(--mint); color: var(--ink); font-size: 13px; line-height: 1.5; transform: translateY(15px); opacity: 0; transition: opacity .2s, transform .2s; pointer-events: none; z-index: 50; }
.status-toast.is-visible { transform: none; opacity: 1; }
.draft-page { padding: clamp(24px,4cqw,64px); display: flex; flex-direction: column; gap: 40px; }
.draft-label { color: var(--quiet); font: 10px var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.draft-layout { display: grid; grid-template-columns: 1.3fr 1fr; gap: 70px; align-items: center; flex: 1; }
.draft-layout h1 { font-size: clamp(38px,5.5cqw,80px); line-height: 1.1; font-weight: 600; letter-spacing: -.06em; margin: 0; }
.draft-period { color: var(--mint); }
.draft-layout p { color: var(--quiet); max-width: 34ch; font-size: 17px; line-height: 1.6; margin: 26px 0; }
.draft-back { display: inline-flex; align-items: center; gap: 35px; color: var(--mint); font-size: 14px; }
.draft-art { background: var(--lavender); color: var(--ink); display: flex; flex-direction: column; justify-content: space-between; gap: 40px; padding: 35px; min-height: 380px; border-radius: 26px; }
.draft-art > span { font-size: 12px; }
.draft-art strong { display: block; font-size: clamp(32px,4cqw,58px); letter-spacing: -.065em; line-height: 1.2; font-weight: 600; }
.draft-art strong span { display: block; -webkit-text-fill-color: transparent; -webkit-text-stroke: 1px currentColor; }
.draft-art > svg { align-self: flex-end; width: 50px; height: 50px; }

/* Snapshot the viewport, not a potentially very long article. Chrome stays anchored. */
::view-transition { pointer-events: none; }
::view-transition-group(reading) { animation-duration: 420ms; animation-timing-function: cubic-bezier(.4,0,.2,1); overflow: clip; }
::view-transition-image-pair(reading) { isolation: isolate; }
::view-transition-old(reading), ::view-transition-new(reading) { height: 100%; opacity: 1; mix-blend-mode: normal; animation-duration: 420ms; animation-timing-function: cubic-bezier(.4,0,.2,1); animation-fill-mode: both; }
::view-transition-old(reading) { animation-name: reading-out; }
::view-transition-new(reading) { animation-name: reading-in; }
@keyframes reading-out { from { transform: none; } to { transform: translate3d(var(--turn-out-x), var(--turn-out-y), 0); } }
@keyframes reading-in { from { transform: translate3d(var(--turn-in-x), var(--turn-in-y), 0); } to { transform: none; } }
@media (min-width: 1650px) { .topbar, .reading-nav { padding-left: 32px; padding-right: 32px; } }
@media (max-width: 1180px) { .topbar { gap: 16px; } .topbar-tools { gap: 6px; padding-left: 16px; } .search-trigger span { display: none; } .search-trigger kbd { margin-left: 0; } .breadcrumbs { padding-left: 0; } }
@media (max-width: 900px) {
  .topbar { gap: 12px; padding: 0 20px; }
  .workspace, .workspace.menu-open { grid-template-columns: minmax(0,1fr); }
  .docs-sidebar { position: absolute; top: 0; left: 0; bottom: 0; z-index: 25; width: min(var(--sidebar),calc(100vw - 46px)); }
  .menu-scrim { display: block; position: absolute; inset: 0; background: #080f0bb5; backdrop-filter: blur(3px); border: 0; z-index: 24; }
  .breadcrumbs { display: none; }
  .chapter-track { flex-basis: 160px; }
  .reading-nav { gap: 20px; padding: 0 20px; }
  .page-next { min-width: 132px; gap: 16px; }
  .position-title { max-width: 160px; }
  .menu-toggle, .search-trigger { min-width: 44px; min-height: 44px; height: 44px; }
  .menu-toggle { width: 44px; padding: 0; }
  .menu-toggle > span { display: none; }
  .search-trigger { width: 44px; padding: 0; justify-content: center; }
  .search-trigger kbd { display: none; }
  .header-action { height: 44px; }
  .topbar .icon-button, .reading-nav .icon-button,
  .sidebar-heading .icon-button, .search-heading .icon-button { min-width: 44px; height: 44px; }
  .docs-nav .nav-link, .nav-folder summary { min-height: 44px; }
  .page-next { height: 44px; }
  .page-next > span { white-space: normal; text-overflow: clip; overflow: visible; text-wrap: balance; line-height: 1.2; }
}
@media (max-width: 760px) {
  :root { --header: 112px; }
  .topbar { display: grid; grid-template-columns: 44px minmax(0,1fr) auto; grid-template-rows: 58px 44px; gap: 0 12px; padding: 0 14px 9px; }
  .menu-toggle { grid-column: 1; grid-row: 1; }
  .docs-brand { grid-column: 2; grid-row: 1; font-size: 20px; }
  .topbar-tools { grid-column: 3; grid-row: 1; padding-left: 0; border-left: 0; gap: 5px; }
  .search-trigger { width: 44px; padding: 0; justify-content: center; border: 0; }
  .search-trigger kbd { display: none; }
  .topbar-actions { grid-column: 1 / -1; grid-row: 2; display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1.6fr) 44px 44px; width: 100%; gap: 6px; margin-left: 0; }
  .header-action { padding: 0 10px; }
  .header-buy svg { display: none; }
}
@media (max-width: 620px) {
  .reader { grid-template-rows: minmax(0,1fr) 58px; }
  .chapter-track { display: none; }
  .reading-nav { padding: 0 14px; gap: 12px; }
  .reading-position { gap: 10px; flex: 0 0 auto; }
  .reading-position > div { display: none; }
  .position-index { font-size: 9px; }
  .position-index > span { display: none; }
  .position-title { font-size: 10px; max-width: 118px; }
  .position-sub { font-size: 8px; }
  .page-controls { gap: 7px; flex: 1; }
  .page-next { min-width: 0; max-width: 260px; height: 44px; padding: 0 10px; gap: 12px; font-size: 12px; flex: 1; }
  .page-next > span { white-space: normal; text-overflow: clip; overflow: visible; text-wrap: balance; line-height: 1.2; }
  .page-prev { width: 30px; }
  .search-dialog { padding: 20px 16px; margin-top: 32px; }
  .search-field input { font-size: 13px; }
  .search-hint { font-size: 9px; }
  .search-heading h2 { font-size: 24px; }
  .search-result strong { font-size: 13px; }
  .draft-layout { grid-template-columns: 1fr; gap: 35px; }
  .draft-art { min-height: 260px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0s !important; animation-duration: 0s !important; }
  ::view-transition-group(*), ::view-transition-old(*), ::view-transition-new(*) { animation: none !important; }
}
@media (forced-colors: active) { .draft-art strong span { -webkit-text-fill-color: currentColor; -webkit-text-stroke: 0; } }
@media print {
  body, #docs-app { height: auto; overflow: visible; }
  #docs-app, .workspace, .reader { display: block; }
  .topbar, .docs-sidebar, .reading-nav, .skip-link, .status-toast { display: none; }
  .reader-scroll { overflow: visible; }
}