/* gnu6-design 1.1.1 — generated by tools/build.py from gnosix_DS TOKENS.json. Do not edit. */
:root {
  --gnosix-neutral-anthracite: #111418;
  --gnosix-neutral-shellWhite: #F7F3ED;
  --gnosix-neutral-pureWhite: #FFFFFF;
  --gnosix-neutral-hairline: #D7DADF;
  --gnosix-neutral-quietDivider: #E6E8EB;
  --gnosix-neutral-muted: #A1A6AD;
  --gnosix-neutral-slate: #667085;
  --gnosix-signalOrange-100: #FFE5D2;
  --gnosix-signalOrange-300: #FF8E40;
  --gnosix-signalOrange-base: #FF6A00;
  --gnosix-signalOrange-700: #C95400;
  --gnosix-beretGreen-100: #E8EFE5;
  --gnosix-beretGreen-300: #8DA982;
  --gnosix-beretGreen-base: #5F7F52;
  --gnosix-beretGreen-700: #455F3D;
  --gnosix-royalBlue-100: #E8EDFF;
  --gnosix-royalBlue-300: #87A0F4;
  --gnosix-royalBlue-base: #4169E1;
  --gnosix-royalBlue-700: #2446A8;
  --gnosix-semantic-alert: #E5484D;
  --gnosix-semantic-warn: #F5A524;
  --g6-font: "Space Grotesk", ui-sans-serif, system-ui, sans-serif;
  --g6-weight-regular: 400;
  --g6-weight-medium: 500;
  --g6-weight-semibold: 600;
  --g6-weight-bold: 700;
  --g6-space-2xs: 0.25rem;
  --g6-space-xs: 0.5rem;
  --g6-space-sm: 0.75rem;
  --g6-space-md: 1rem;
  --g6-space-lg: 1.5rem;
  --g6-space-xl: 2rem;
  --g6-space-2xl: 3rem;
  --g6-space-3xl: 4rem;
  --g6-space-4xl: 6rem;
  --g6-space-5xl: 8rem;
}
:root, [data-g6-mode="dark"] {
  color-scheme: dark;
  --g6-canvas: #111418;
  --g6-surface-1: #191C20;
  --g6-surface-2: #212327;
  --g6-rule: #2D3033;
  --g6-rule-strong: #515254;
  --g6-text: #F7F3ED;
  --g6-text-2: #C8C6C2;
  --g6-text-3: #A1A6AD;
  --g6-link: #87A0F4;
  --g6-link-hover: #E8EDFF;
  --g6-focus: #87A0F4;
  --g6-action-bg: #F7F3ED;
  --g6-action-bg-hover: #FFFFFF;
  --g6-action-text: #111418;
  --g6-identity-live: #4169E1;
  --g6-identity-labs: #5F7F52;
  --g6-identity-gnosix: #FF6A00;
  --g6-accent-live-text: #87A0F4;
  --g6-accent-labs-text: #8DA982;
  --g6-state-stable: #8DA982;
  --g6-state-attention: #F5A524;
  --g6-state-breach: #ED706D;
  --g6-state-neutral: #A1A6AD;
  --g6-note-bg: #151C29;
  --g6-note-attention-bg: #201E1D;
  --g6-selection: #25396B;
  --g6-action-bg-pressed: #CDCAC7;
  --g6-action-signal: #C95400;
  --g6-action-disabled-bg: #272A2D;
  --g6-action-disabled-text: #A1A6AD;
  --g6-signal: #FF6A00;
  --g6-selected-bg: #1B263F;
}
@media (prefers-color-scheme: light) {
  :root:not([data-g6-mode="dark"]) {
    color-scheme: light;
    --g6-canvas: #F7F3ED;
    --g6-surface-1: #FFFFFF;
    --g6-surface-2: #EBE7E2;
    --g6-rule: #D2CFCB;
    --g6-rule-strong: #A09F9D;
    --g6-text: #111418;
    --g6-text-2: #37393C;
    --g6-text-3: #5B6477;
    --g6-link: #2446A8;
    --g6-link-hover: #1D3572;
    --g6-focus: #2446A8;
    --g6-action-bg: #111418;
    --g6-action-bg-hover: #182646;
    --g6-action-text: #F7F3ED;
    --g6-identity-live: #4169E1;
    --g6-identity-labs: #5F7F52;
    --g6-identity-gnosix: #FF6A00;
    --g6-accent-live-text: #2446A8;
    --g6-accent-labs-text: #455F3D;
    --g6-state-stable: #455F3D;
    --g6-state-attention: #A54916;
    --g6-state-breach: #A03B3E;
    --g6-state-neutral: #5B6477;
    --g6-note-bg: #E9EAEE;
    --g6-note-attention-bg: #F8EAD9;
    --g6-selection: #C7D2EE;
    --g6-action-bg-pressed: #272A2D;
    --g6-action-signal: #FF8E40;
    --g6-action-disabled-bg: #DDDAD5;
    --g6-action-disabled-text: #4A5262;
    --g6-signal: #C95400;
    --g6-selected-bg: #DCE1EE;
  }
}
[data-g6-mode="light"] {
  color-scheme: light;
  --g6-canvas: #F7F3ED;
  --g6-surface-1: #FFFFFF;
  --g6-surface-2: #EBE7E2;
  --g6-rule: #D2CFCB;
  --g6-rule-strong: #A09F9D;
  --g6-text: #111418;
  --g6-text-2: #37393C;
  --g6-text-3: #5B6477;
  --g6-link: #2446A8;
  --g6-link-hover: #1D3572;
  --g6-focus: #2446A8;
  --g6-action-bg: #111418;
  --g6-action-bg-hover: #182646;
  --g6-action-text: #F7F3ED;
  --g6-identity-live: #4169E1;
  --g6-identity-labs: #5F7F52;
  --g6-identity-gnosix: #FF6A00;
  --g6-accent-live-text: #2446A8;
  --g6-accent-labs-text: #455F3D;
  --g6-state-stable: #455F3D;
  --g6-state-attention: #A54916;
  --g6-state-breach: #A03B3E;
  --g6-state-neutral: #5B6477;
  --g6-note-bg: #E9EAEE;
  --g6-note-attention-bg: #F8EAD9;
  --g6-selection: #C7D2EE;
  --g6-action-bg-pressed: #272A2D;
  --g6-action-signal: #FF8E40;
  --g6-action-disabled-bg: #DDDAD5;
  --g6-action-disabled-text: #4A5262;
  --g6-signal: #C95400;
  --g6-selected-bg: #DCE1EE;
}

/* ── gnu6-design · foundation ─────────────────────────────────────────────
   One family (Space Grotesk, gnosix_DS TYP-001), one substrate per mode,
   hairline structure. Fonts resolve relative to this stylesheet. */
@font-face {
  font-family: "Space Grotesk";
  src: url("fonts/SpaceGrotesk-wght.woff2") format("woff2");
  font-style: normal;
  font-weight: 300 700;
  font-display: swap;
}

:root {
  /* Type scale — fluid between 360px and 1440px viewports. Local to this target
     (gnosix_DS ratifies no global size ladder). */
  --g6-text-xs: 0.75rem;
  --g6-text-sm: 0.875rem;
  --g6-text-md: 1rem;
  --g6-text-read: clamp(1rem, 0.96rem + 0.18vw, 1.0625rem);
  --g6-text-lg: clamp(1.125rem, 1.05rem + 0.35vw, 1.3125rem);
  --g6-text-xl: clamp(1.375rem, 1.2rem + 0.75vw, 1.875rem);
  --g6-text-2xl: clamp(1.75rem, 1.4rem + 1.5vw, 2.75rem);
  --g6-text-display: clamp(2.5rem, 1.35rem + 4.9vw, 5.75rem);
  --g6-track-display: -0.045em;
  --g6-track-heading: -0.03em;
  --g6-track-label: 0.14em;
  --g6-measure: 68ch;
  --g6-radius: 6px;
  --g6-radius-sm: 4px;
  --g6-bar-h: 3.5rem;
  --g6-gutter: clamp(1rem, 0.45rem + 2.5vw, 3.5rem);
  --g6-frame: 90rem;
  --g6-ease-out: cubic-bezier(0.2, 0.7, 0.2, 1);
  --g6-ease-inout: cubic-bezier(0.6, 0, 0.3, 1);
  --g6-dur-1: 120ms;
  --g6-dur-2: 200ms;
  --g6-dur-3: 420ms;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: calc(var(--g6-bar-h) + 1.5rem);
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--g6-canvas);
  color: var(--g6-text);
  font-family: var(--g6-font);
  font-size: var(--g6-text-md);
  font-weight: var(--g6-weight-regular);
  line-height: 1.6;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
svg,
video {
  display: block;
  max-width: 100%;
}

img {
  height: auto;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
  letter-spacing: inherit;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: var(--g6-weight-bold);
  line-height: 1.12;
  letter-spacing: var(--g6-track-heading);
  text-wrap: balance;
}

p {
  margin: 0;
  text-wrap: pretty;
}

a {
  color: var(--g6-link);
  text-decoration-line: underline;
  text-decoration-thickness: 1px;
  text-decoration-color: color-mix(in oklab, currentColor 45%, transparent);
  text-underline-offset: 0.22em;
  transition:
    color var(--g6-dur-1) linear,
    text-decoration-color var(--g6-dur-1) linear;
}

a:hover {
  color: var(--g6-link-hover);
  text-decoration-color: currentColor;
}

:focus-visible {
  outline: 2px solid var(--g6-focus);
  outline-offset: 3px;
  border-radius: 2px;
}

::selection {
  background: var(--g6-selection);
  color: var(--g6-text);
}

code,
kbd,
samp,
pre {
  /* gnosix_DS TYP-002: technical text stays in Space Grotesk; tabular figures carry it. */
  font-family: var(--g6-font);
  font-variant-numeric: tabular-nums;
}

hr {
  border: 0;
  border-top: 1px solid var(--g6-rule);
  margin: 2.5rem 0;
}

/* ── shared typographic atoms ── */
.g6-label {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-size: var(--g6-text-xs);
  font-weight: var(--g6-weight-semibold);
  letter-spacing: var(--g6-track-label);
  line-height: 1.3;
  text-transform: uppercase;
  color: var(--g6-text-3);
}

.g6-label > span[aria-hidden="true"] {
  color: var(--g6-rule-strong);
}

.g6-num {
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.g6-lede {
  font-size: var(--g6-text-lg);
  line-height: 1.55;
  color: var(--g6-text-2);
  max-width: 36em;
}

.g6-display {
  font-size: var(--g6-text-display);
  font-weight: var(--g6-weight-bold);
  letter-spacing: var(--g6-track-display);
  line-height: 0.98;
}

.g6-display em {
  font-style: normal;
  color: var(--g6-text-3);
}

.g6-skip {
  position: absolute;
  left: var(--g6-gutter);
  top: 0;
  z-index: 100;
  transform: translateY(-120%);
  padding: 0.65rem 1rem;
  background: var(--g6-text);
  color: var(--g6-canvas);
  font-weight: var(--g6-weight-semibold);
  text-decoration: none;
  border-radius: 0 0 var(--g6-radius) var(--g6-radius);
}

.g6-skip:focus,
.g6-skip:focus-visible {
  transform: translateY(0);
  color: var(--g6-canvas);
}

.g6-visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

main:focus {
  outline: none;
}

@media (forced-colors: active) {
  .g6-state::before,
  .g6-ledger__rail {
    forced-color-adjust: none;
    background: CanvasText !important;
  }
}

/* ── gnu6-design · layout ─────────────────────────────────────────────────
   System bar (identical on every GNU6 domain), publication masthead,
   page frame, hero, section heads, footer. */

.g6-frame {
  width: 100%;
  max-width: var(--g6-frame);
  margin-inline: auto;
  padding-inline: var(--g6-gutter);
}

/* ── system bar ─────────────────────────────────────────────────────────── */
.g6-sysbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--g6-canvas) 92%, transparent);
  border-bottom: 1px solid var(--g6-rule);
}

@supports (backdrop-filter: blur(1px)) {
  .g6-sysbar {
    backdrop-filter: saturate(1.2) blur(14px);
  }
}

.g6-sysbar__inner {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 2.4vw, 2.5rem);
  height: var(--g6-bar-h);
}

.g6-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--g6-text);
  text-decoration: none;
  font-weight: var(--g6-weight-bold);
  font-size: 1.0625rem;
  letter-spacing: -0.03em;
  white-space: nowrap;
  min-height: 44px;
}

.g6-brand:hover {
  color: var(--g6-text);
}

.g6-brand img {
  width: 28px;
  height: 28px;
}

.g6-brand__dot {
  color: var(--g6-accent-live-text);
}

.g6-sysnav {
  display: flex;
  align-items: stretch;
  gap: clamp(0.25rem, 1.4vw, 1.25rem);
  height: 100%;
  margin-right: auto;
}

.g6-sysnav a {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.3em;
  padding-inline: 0.35rem;
  color: var(--g6-text-2);
  text-decoration: none;
  font-size: var(--g6-text-sm);
  font-weight: var(--g6-weight-medium);
}

.g6-sysnav a::after {
  content: "";
  position: absolute;
  left: 0.35rem;
  right: 0.35rem;
  bottom: -1px;
  height: 2px;
  background: var(--g6-identity-live);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--g6-dur-2) var(--g6-ease-out);
}

.g6-sysnav a:hover {
  color: var(--g6-text);
}

.g6-sysnav a[aria-current="page"],
.g6-sysnav a[aria-current="true"] {
  color: var(--g6-text);
}

.g6-sysnav a[aria-current="page"]::after,
.g6-sysnav a[aria-current="true"]::after {
  transform: scaleX(1);
}

.g6-sysbar__end {
  display: flex;
  align-items: center;
  gap: clamp(0.5rem, 1.6vw, 1.25rem);
  margin-left: auto;
}

.g6-lang {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  min-width: 44px;
  justify-content: center;
  color: var(--g6-text-2);
  font-size: var(--g6-text-xs);
  font-weight: var(--g6-weight-semibold);
  letter-spacing: 0.1em;
  text-decoration: none;
}

.g6-lang:hover {
  color: var(--g6-text);
}

.g6-ext {
  font-size: 0.85em;
  color: var(--g6-text-3);
}

/* Compact system menu (no script): shown below 760px, replaces the inline nav. */
.g6-sysmenu {
  display: none;
  position: relative;
}

.g6-sysmenu > summary {
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 44px;
  padding-inline: 0.75rem;
  border: 1px solid var(--g6-rule-strong);
  border-radius: var(--g6-radius);
  font-size: var(--g6-text-sm);
  font-weight: var(--g6-weight-medium);
  cursor: pointer;
}

.g6-sysmenu > summary::-webkit-details-marker {
  display: none;
}

.g6-sysmenu > summary::after {
  content: "";
  width: 0.55em;
  height: 0.55em;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: translateY(-25%) rotate(45deg);
  transition: transform var(--g6-dur-2) var(--g6-ease-out);
}

.g6-sysmenu[open] > summary::after {
  transform: translateY(15%) rotate(225deg);
}

.g6-sysmenu__panel {
  position: absolute;
  right: 0;
  top: calc(100% + 0.5rem);
  min-width: min(16rem, calc(100vw - 2 * var(--g6-gutter)));
  padding: 0.5rem;
  background: var(--g6-surface-1);
  border: 1px solid var(--g6-rule-strong);
  border-radius: var(--g6-radius);
  box-shadow: 0 18px 40px -18px rgb(0 0 0 / 0.55);
}

.g6-sysmenu__panel a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 44px;
  padding: 0.5rem 0.75rem;
  color: var(--g6-text);
  text-decoration: none;
  border-radius: var(--g6-radius-sm);
}

.g6-sysmenu__panel a:hover,
.g6-sysmenu__panel a[aria-current="page"] {
  background: var(--g6-surface-2);
}

@media (max-width: 760px) {
  .g6-sysnav {
    display: none;
  }
  /* The language link is never hidden: adapters may drop the compact menu (Spine does). */
  .g6-sysbar__end > .g6-lang {
    min-width: 36px;
  }
  .g6-sysmenu {
    display: block;
  }
}

@media (max-width: 380px) {
  .g6-brand__word {
    font-size: 0.95rem;
  }
}

/* ── publication masthead (docs.gnu6.live and other publications) ───────── */
.g6-masthead {
  border-bottom: 1px solid var(--g6-rule);
}

.g6-masthead__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 3rem;
  padding-block: 0.5rem;
}

.g6-masthead__title {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--g6-text);
  text-decoration: none;
  font-size: var(--g6-text-sm);
  font-weight: var(--g6-weight-semibold);
  letter-spacing: -0.01em;
  min-height: 44px;
}

.g6-masthead__title img {
  width: 22px;
  height: 22px;
}

.g6-masthead__title span[aria-hidden="true"] {
  color: var(--g6-rule-strong);
  font-weight: var(--g6-weight-regular);
}

.g6-masthead__sub {
  color: var(--g6-text-2);
  font-weight: var(--g6-weight-medium);
}

.g6-masthead__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem clamp(0.75rem, 2vw, 1.5rem);
  font-size: var(--g6-text-sm);
}

.g6-masthead__nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--g6-text-2);
  text-decoration: none;
}

.g6-masthead__nav a:hover,
.g6-masthead__nav a[aria-current="page"] {
  color: var(--g6-text);
}

.g6-masthead__nav a[aria-current="page"] {
  text-decoration: underline;
  text-decoration-color: var(--g6-identity-labs);
  text-decoration-thickness: 2px;
  text-underline-offset: 0.5em;
}

@media (max-width: 640px) {
  .g6-masthead__inner {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-bottom: 0;
  }
  /* One scannable line; overflow scrolls horizontally instead of wrapping into a block. */
  .g6-masthead__nav {
    flex-wrap: nowrap;
    overflow-x: auto;
    margin-inline: calc(-1 * var(--g6-gutter));
    padding-inline: var(--g6-gutter);
    scrollbar-width: none;
    mask-image: linear-gradient(90deg, #000 85%, transparent);
  }
  .g6-masthead__nav::-webkit-scrollbar {
    display: none;
  }
  .g6-masthead__nav a {
    white-space: nowrap;
  }
}

/* ── page body ───────────────────────────────────────────────────────────── */
.g6-page {
  padding-bottom: clamp(3rem, 6vw, 6rem);
}

.g6-hero {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: clamp(1rem, 2vw, 2rem);
  align-items: end;
  padding-block: clamp(3rem, 2rem + 6vw, 8.5rem) clamp(2.5rem, 1.5rem + 4vw, 6rem);
}

.g6-hero__copy {
  grid-column: 1 / span 8;
  display: grid;
  gap: clamp(1.25rem, 2.5vw, 2rem);
  align-content: end;
}

.g6-hero__aside {
  grid-column: 10 / span 3;
}

.g6-hero--compact {
  padding-block: clamp(2rem, 1.5rem + 3vw, 4.5rem) clamp(1.75rem, 1rem + 2vw, 3rem);
}

.g6-hero--compact .g6-display {
  font-size: clamp(2.25rem, 1.4rem + 3.6vw, 4.5rem);
}

.g6-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  align-items: center;
}

@media (max-width: 960px) {
  .g6-hero__copy {
    grid-column: 1 / -1;
  }
  .g6-hero__aside {
    grid-column: 1 / -1;
    margin-top: 2.5rem;
    max-width: 15rem;
  }
}

.g6-section {
  padding-top: clamp(2.5rem, 1.5rem + 3vw, 5rem);
}

.g6-section__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.75rem 2rem;
  align-items: end;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--g6-rule-strong);
}

.g6-section__head h2 {
  font-size: var(--g6-text-2xl);
  letter-spacing: var(--g6-track-heading);
  margin-top: 0.6rem;
}

.g6-section__note {
  color: var(--g6-text-3);
  font-size: var(--g6-text-sm);
  max-width: 28em;
  text-align: right;
}

@media (max-width: 720px) {
  .g6-section__head {
    grid-template-columns: 1fr;
  }
  .g6-section__note {
    text-align: left;
  }
}

/* ── footer ──────────────────────────────────────────────────────────────── */
.g6-footer {
  border-top: 1px solid var(--g6-rule);
  margin-top: clamp(3rem, 6vw, 6rem);
  color: var(--g6-text-3);
  font-size: var(--g6-text-sm);
}

.g6-footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1.4fr) auto;
  gap: 1.25rem 2.5rem;
  padding-block: 1.5rem 2rem;
  align-items: center;
}

.g6-footer__org {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--g6-text-2);
}

.g6-footer__org img {
  width: 20px;
  height: 20px;
}

.g6-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0 1.25rem;
  justify-content: flex-end;
}

.g6-footer__links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--g6-text-2);
  text-decoration: none;
}

.g6-footer__links a:hover {
  color: var(--g6-text);
}

@media (max-width: 860px) {
  .g6-footer__inner {
    grid-template-columns: 1fr;
  }
  .g6-footer__links {
    justify-content: flex-start;
  }
}

/* ── gnu6-design · components ─────────────────────────────────────────────
   Contracts are documented in docs/COMPONENTS.md. No status capsules
   (gnosix_DS CMP-001): state is text + a shaped pip (A11Y-001). */

/* ── actions ───────────────────────────────────────────────────────────────
   Amendment 01: primary actions are high-contrast neutral surfaces (inverse of
   the canvas). Signal Orange is a *signal* on the action — a leading marker —
   never the fill behind text. tools/build.py fails the build otherwise. */
.g6-action {
  --g6-action-marker: var(--g6-action-signal);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65em;
  min-height: 44px;
  padding: 0.65rem 1.15rem;
  border: 1px solid transparent;
  border-radius: var(--g6-radius);
  background: var(--g6-action-bg);
  color: var(--g6-action-text);
  font-size: var(--g6-text-sm);
  font-weight: var(--g6-weight-semibold);
  letter-spacing: -0.005em;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition:
    background-color var(--g6-dur-1) linear,
    border-color var(--g6-dur-1) linear,
    color var(--g6-dur-1) linear,
    transform var(--g6-dur-1) var(--g6-ease-out);
}

/* The directional signal: a small orange square leading the label. */
.g6-action::before {
  content: "";
  flex: none;
  width: 0.5rem;
  height: 0.5rem;
  background: var(--g6-action-marker);
  transition: transform var(--g6-dur-2) var(--g6-ease-out);
}

.g6-action:hover {
  background: var(--g6-action-bg-hover);
  color: var(--g6-action-text);
}

.g6-action:hover::before {
  transform: rotate(45deg) scale(0.9);
}

.g6-action:active,
.g6-action[aria-pressed="true"] {
  background: var(--g6-action-bg-pressed);
  color: var(--g6-action-text);
}

.g6-action:active {
  transform: translateY(1px);
}

.g6-action:focus-visible {
  outline: 2px solid var(--g6-focus);
  outline-offset: 3px;
}

.g6-action[disabled],
.g6-action[aria-disabled="true"] {
  cursor: not-allowed;
  background: var(--g6-action-disabled-bg);
  color: var(--g6-action-disabled-text);
  border-color: transparent;
}

.g6-action[disabled]::before,
.g6-action[aria-disabled="true"]::before {
  background: currentColor;
  opacity: 0.6;
}

.g6-action[aria-busy="true"] {
  cursor: progress;
}

.g6-action[aria-busy="true"]::before {
  width: 0.8em;
  height: 0.8em;
  background: none;
  border: 1.5px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: g6-spin 0.8s linear infinite;
}

.g6-action__arrow {
  transition: transform var(--g6-dur-2) var(--g6-ease-out);
}

.g6-action:hover .g6-action__arrow {
  transform: translate(2px, -2px);
}

/* Quiet: secondary action, outline on the substrate, neutral marker. */
.g6-action--quiet {
  --g6-action-marker: var(--g6-text-3);
  background: transparent;
  color: var(--g6-text);
  border-color: var(--g6-rule-strong);
}

.g6-action--quiet::before {
  display: none;
}

.g6-action--quiet:hover,
.g6-action--quiet:active,
.g6-action--quiet[aria-pressed="true"] {
  background: var(--g6-surface-2);
  color: var(--g6-text);
  border-color: var(--g6-text-3);
}

.g6-action--quiet[aria-pressed="true"],
.g6-action--quiet[aria-current] {
  background: var(--g6-selected-bg);
  border-color: var(--g6-accent-live-text);
}

/* Portal: private access in the system bar. Outline + platform identity pip. */
.g6-action--portal {
  --g6-action-marker: var(--g6-identity-live);
  min-height: 36px;
  padding: 0.45rem 0.9rem;
  background: transparent;
  color: var(--g6-text);
  border-color: var(--g6-rule-strong);
}

.g6-action--portal::before {
  width: 0.45rem;
  height: 0.45rem;
}

.g6-action--portal:hover,
.g6-action--portal:active {
  background: var(--g6-surface-2);
  color: var(--g6-text);
  border-color: var(--g6-text-3);
}

.g6-action--portal[aria-expanded="true"] {
  background: var(--g6-selected-bg);
  border-color: var(--g6-accent-live-text);
}

.g6-action--portal[data-portal-auth-state="authenticated"] {
  --g6-action-marker: var(--g6-state-stable);
}

.g6-action--portal[data-portal-auth-state="error"],
.g6-action--portal[data-portal-auth-state="blocked_fallback"] {
  --g6-action-marker: var(--g6-state-breach);
}

/* Text link with an arrow, used for “go to” lines. */
.g6-goto {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  min-height: 44px;
  color: var(--g6-text);
  font-weight: var(--g6-weight-semibold);
  text-decoration: underline;
  text-decoration-color: var(--g6-rule-strong);
  text-underline-offset: 0.35em;
}

.g6-goto:hover {
  color: var(--g6-text);
  text-decoration-color: currentColor;
}

/* ── state: text + shaped pip ───────────────────────────────────────────── */
.g6-state {
  display: inline-flex;
  align-items: baseline;
  gap: 0.55em;
  font-size: var(--g6-text-sm);
  font-weight: var(--g6-weight-medium);
  line-height: 1.35;
  color: var(--g6-state-neutral);
}

.g6-state::before {
  content: "";
  flex: none;
  width: 0.5rem;
  height: 0.5rem;
  background: currentColor;
  transform: translateY(-0.05em);
}

/* stable: filled square */
.g6-state--stable {
  color: var(--g6-state-stable);
}

/* attention: diamond (experimental, draft, not ratified) */
.g6-state--attention {
  color: var(--g6-state-attention);
}

.g6-state--attention::before {
  transform: translateY(-0.05em) rotate(45deg) scale(0.86);
}

/* breach: square with a cut (failure) */
.g6-state--breach {
  color: var(--g6-state-breach);
}

.g6-state--breach::before {
  background: linear-gradient(135deg, currentColor 42%, transparent 42% 58%, currentColor 58%);
}

/* inventory / empty: hollow square */
.g6-state--empty::before {
  background: transparent;
  box-shadow: inset 0 0 0 1.5px currentColor;
}

/* planned / not available: dash */
.g6-state--planned::before {
  height: 2px;
  transform: translateY(-0.3em);
}

/* ── ledger: the shared index pattern ───────────────────────────────────── */
.g6-ledger {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: g6-ledger;
}

.g6-ledger__row {
  position: relative;
  border-bottom: 1px solid var(--g6-rule);
}

.g6-ledger__item {
  position: relative;
  display: grid;
  grid-template-columns: 3.25rem minmax(0, 1fr) minmax(10rem, 15rem) 1.5rem;
  column-gap: clamp(0.75rem, 2vw, 2rem);
  align-items: baseline;
  padding: clamp(1.15rem, 1rem + 0.6vw, 1.6rem) 0.5rem clamp(1.15rem, 1rem + 0.6vw, 1.6rem) 0;
  color: inherit;
  text-decoration: none;
  transition: background-color var(--g6-dur-2) linear;
}

a.g6-ledger__item:hover {
  background: linear-gradient(90deg, var(--g6-surface-1), transparent 85%);
  color: inherit;
}

.g6-ledger__rail {
  position: absolute;
  left: 0;
  top: -1px;
  bottom: -1px;
  width: 2px;
  background: var(--g6-ledger-identity, var(--g6-identity-live));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--g6-dur-2) var(--g6-ease-out);
}

a.g6-ledger__item:hover .g6-ledger__rail,
a.g6-ledger__item:focus-visible .g6-ledger__rail,
.g6-ledger__row:has(.g6-ledger__title a):hover .g6-ledger__rail,
.g6-ledger__row:focus-within .g6-ledger__rail {
  transform: scaleY(1);
}

.g6-ledger__row:has(.g6-ledger__title a):hover .g6-ledger__item {
  background: linear-gradient(90deg, var(--g6-surface-1), transparent 85%);
}

.g6-ledger__index {
  padding-left: 0.85rem;
  font-size: var(--g6-text-sm);
  font-variant-numeric: tabular-nums;
  color: var(--g6-text-3);
}

.g6-ledger__main {
  display: grid;
  gap: 0.35rem;
  min-width: 0;
}

.g6-ledger__title {
  font-size: var(--g6-text-xl);
  font-weight: var(--g6-weight-semibold);
  letter-spacing: var(--g6-track-heading);
  line-height: 1.2;
  color: var(--g6-text);
  overflow-wrap: anywhere;
}

.g6-ledger__title a {
  color: inherit;
  text-decoration: none;
}

.g6-ledger__title a::after {
  /* stretch the title link over the whole row */
  content: "";
  position: absolute;
  inset: 0;
}

.g6-ledger__desc {
  color: var(--g6-text-2);
  max-width: 46em;
  font-size: var(--g6-text-md);
}

.g6-ledger__desc a {
  position: relative;
  z-index: 1;
}

.g6-ledger__meta {
  display: grid;
  gap: 0.3rem;
  justify-items: start;
  font-size: var(--g6-text-sm);
  color: var(--g6-text-3);
  overflow-wrap: anywhere;
}

.g6-ledger__arrow {
  justify-self: end;
  color: var(--g6-text-3);
  transition:
    transform var(--g6-dur-2) var(--g6-ease-out),
    color var(--g6-dur-1) linear;
}

.g6-ledger__item:hover .g6-ledger__arrow,
.g6-ledger__row:hover .g6-ledger__arrow {
  color: var(--g6-text);
  transform: translate(3px, -3px);
}

.g6-ledger--compact .g6-ledger__title {
  font-size: var(--g6-text-lg);
}

.g6-ledger__row:has(.g6-ledger__title a:focus-visible) {
  outline: 2px solid var(--g6-focus);
  outline-offset: 2px;
}

.g6-ledger__title a:focus-visible {
  outline: none;
}

@media (max-width: 760px) {
  .g6-ledger__item {
    grid-template-columns: 2.5rem minmax(0, 1fr) 1.25rem;
    row-gap: 0.75rem;
  }
  .g6-ledger__meta {
    grid-column: 2 / 3;
    grid-row: 2;
  }
  .g6-ledger__arrow {
    grid-column: 3;
    grid-row: 1;
  }
  .g6-ledger__index {
    padding-left: 0.65rem;
  }
}

/* ── specimen: a ratified mark held still inside a registration frame ───── */
.g6-specimen {
  margin: 0;
  display: grid;
  gap: 1rem;
}

.g6-specimen__frame {
  --g6-tick: 22px;
  position: relative;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  padding: 12%;
  background:
    linear-gradient(var(--g6-rule-strong), var(--g6-rule-strong)) top left / var(--g6-tick) 1px,
    linear-gradient(var(--g6-rule-strong), var(--g6-rule-strong)) top left / 1px var(--g6-tick),
    linear-gradient(var(--g6-rule-strong), var(--g6-rule-strong)) top right / var(--g6-tick) 1px,
    linear-gradient(var(--g6-rule-strong), var(--g6-rule-strong)) top right / 1px var(--g6-tick),
    linear-gradient(var(--g6-rule-strong), var(--g6-rule-strong)) bottom left / var(--g6-tick) 1px,
    linear-gradient(var(--g6-rule-strong), var(--g6-rule-strong)) bottom left / 1px var(--g6-tick),
    linear-gradient(var(--g6-rule-strong), var(--g6-rule-strong)) bottom right / var(--g6-tick) 1px,
    linear-gradient(var(--g6-rule-strong), var(--g6-rule-strong)) bottom right / 1px var(--g6-tick);
  background-repeat: no-repeat;
}

.g6-specimen__frame::before,
.g6-specimen__frame::after {
  /* crosshair ticks on the centre axes: the frame measures, the mark stays still */
  content: "";
  position: absolute;
  background: var(--g6-rule);
}

.g6-specimen__frame::before {
  left: 50%;
  top: 0;
  width: 1px;
  height: 7%;
}

.g6-specimen__frame::after {
  top: 50%;
  left: 0;
  height: 1px;
  width: 7%;
}

.g6-specimen__frame img {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 22px 28px rgb(0 0 0 / 0.28));
}

.g6-specimen__caption {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.15rem 1rem;
  margin: 0;
  font-size: var(--g6-text-xs);
  letter-spacing: 0.04em;
  color: var(--g6-text-3);
  border-top: 1px solid var(--g6-rule);
  padding-top: 0.75rem;
}

.g6-specimen__caption dt {
  text-transform: uppercase;
  letter-spacing: var(--g6-track-label);
}

.g6-specimen__caption dd {
  margin: 0;
  color: var(--g6-text-2);
  font-variant-numeric: tabular-nums;
}

/* ── facts: definition list for provenance and registries ───────────────── */
.g6-facts {
  display: grid;
  grid-template-columns: minmax(8rem, 13rem) minmax(0, 1fr);
  margin: 1.75rem 0;
  border-top: 1px solid var(--g6-rule);
  font-size: var(--g6-text-sm);
}

.g6-facts dt,
.g6-facts dd {
  margin: 0;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--g6-rule);
  line-height: 1.55;
}

.g6-facts dt {
  color: var(--g6-text-3);
  padding-right: 1rem;
}

.g6-facts dd {
  color: var(--g6-text);
  overflow-wrap: anywhere;
}

.g6-facts code {
  font-size: 0.95em;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
  overflow-wrap: anywhere;
  word-break: break-word;
}

@media (max-width: 600px) {
  .g6-facts {
    grid-template-columns: 1fr;
  }
  .g6-facts dt {
    padding-bottom: 0;
    border-bottom: 0;
  }
  .g6-facts dd {
    padding-top: 0.2rem;
  }
}

/* ── records: the long-form registry entry ──────────────────────────────── */
.g6-record {
  padding-block: clamp(1.75rem, 1.25rem + 1.5vw, 2.75rem);
  border-bottom: 1px solid var(--g6-rule);
}

.g6-record__head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  align-items: baseline;
}

.g6-record h2 {
  font-size: var(--g6-text-xl);
  margin: 1rem 0 0.75rem;
  max-width: 34em;
}

.g6-record > p {
  color: var(--g6-text-2);
  max-width: var(--g6-measure);
}

.g6-record__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ── notice: provenance / publication contract strip ───────────────────── */
.g6-notice {
  display: grid;
  grid-template-columns: minmax(9rem, 13rem) minmax(0, 1fr);
  gap: 0.75rem 2rem;
  align-items: baseline;
  margin-top: clamp(2.5rem, 4vw, 4rem);
  padding: clamp(1.25rem, 2vw, 1.75rem) 0;
  border-top: 1px solid var(--g6-rule-strong);
  border-bottom: 1px solid var(--g6-rule);
}

.g6-notice p {
  color: var(--g6-text-2);
  max-width: var(--g6-measure);
}

.g6-notice p + p {
  margin-top: 0.75rem;
}

.g6-notice code {
  overflow-wrap: anywhere;
  word-break: break-word;
  font-size: 0.92em;
}

@media (max-width: 720px) {
  .g6-notice {
    grid-template-columns: 1fr;
  }
}

/* ── empty: an explicit, honest empty inventory ─────────────────────────── */
.g6-empty {
  margin: 2rem 0;
  padding: clamp(1.5rem, 3vw, 2.5rem);
  border: 1px dashed var(--g6-rule-strong);
  border-radius: var(--g6-radius);
  display: grid;
  gap: 0.75rem;
  justify-items: start;
}

.g6-empty strong {
  font-size: var(--g6-text-xl);
  letter-spacing: var(--g6-track-heading);
}

.g6-empty p {
  color: var(--g6-text-2);
  max-width: var(--g6-measure);
}

/* ── download list (templates) ──────────────────────────────────────────── */
.g6-files {
  list-style: none;
  margin: 2rem 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 15rem), 1fr));
  border-top: 1px solid var(--g6-rule);
  border-left: 1px solid var(--g6-rule);
}

.g6-files a {
  display: grid;
  gap: 0.35rem;
  min-height: 7rem;
  padding: 1.15rem;
  border-right: 1px solid var(--g6-rule);
  border-bottom: 1px solid var(--g6-rule);
  color: var(--g6-text);
  text-decoration: none;
  align-content: space-between;
}

.g6-files a:hover {
  background: var(--g6-surface-1);
}

.g6-files strong {
  font-size: var(--g6-text-md);
  font-variant-numeric: tabular-nums;
}

.g6-files small {
  color: var(--g6-text-3);
}

/* ── private service menu (gnu6.live portal) ────────────────────────────── */
.g6-menu-anchor {
  position: relative;
}

.g6-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 0.6rem);
  z-index: 60;
  width: min(22rem, calc(100vw - 2 * var(--g6-gutter)));
  max-height: calc(100vh - var(--g6-bar-h) - 2rem);
  overflow: auto;
  padding: 0.5rem;
  background: var(--g6-surface-1);
  border: 1px solid var(--g6-rule-strong);
  border-radius: var(--g6-radius);
  box-shadow: 0 24px 48px -24px rgb(0 0 0 / 0.6);
  transform-origin: top right;
}

.g6-menu__group + .g6-menu__group {
  margin-top: 0.35rem;
  padding-top: 0.35rem;
  border-top: 1px solid var(--g6-rule);
}

.g6-menu__label {
  padding: 0.5rem 0.65rem 0.25rem;
  font-size: var(--g6-text-xs);
  font-weight: var(--g6-weight-semibold);
  letter-spacing: var(--g6-track-label);
  text-transform: uppercase;
  color: var(--g6-text-3);
}

.g6-menu__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 44px;
  padding: 0.5rem 0.65rem;
  border-radius: var(--g6-radius-sm);
  color: var(--g6-text);
  text-decoration: none;
  font-size: var(--g6-text-sm);
  font-weight: var(--g6-weight-medium);
}

a.g6-menu__item:hover,
a.g6-menu__item:focus-visible {
  background: var(--g6-surface-2);
  color: var(--g6-text);
  outline-offset: -2px;
}

.g6-menu__item--locked {
  color: var(--g6-text-3);
  cursor: not-allowed;
}

.g6-menu__item--locked > span:last-child {
  font-size: var(--g6-text-xs);
  letter-spacing: 0.06em;
}

@keyframes g6-spin {
  to {
    transform: rotate(360deg);
  }
}

/* ── gnu6-design · reading ────────────────────────────────────────────────
   Long-form technical reading: navigation rail, measured prose, on-page
   contents. The prose rules style plain Markdown output (no classes needed). */

.g6-doc {
  display: grid;
  grid-template-columns: 16.5rem minmax(0, 1fr) 13rem;
  gap: 0 clamp(1.5rem, 3vw, 3.5rem);
  align-items: start;
}

.g6-doc__nav {
  position: sticky;
  top: var(--g6-bar-h);
  max-height: calc(100vh - var(--g6-bar-h));
  overflow: auto;
  overscroll-behavior: contain;
  padding: 1.75rem 0.25rem 2rem 0;
  border-right: 1px solid var(--g6-rule);
  scrollbar-width: thin;
  scrollbar-color: var(--g6-rule-strong) transparent;
}

.g6-doc__body {
  min-width: 0;
  padding-top: clamp(1.75rem, 3vw, 3rem);
}

.g6-doc__toc {
  position: sticky;
  top: calc(var(--g6-bar-h) + 1.75rem);
  padding-top: clamp(1.75rem, 3vw, 3rem);
  font-size: var(--g6-text-sm);
}

/* nav rail */
.g6-rail__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  padding: 0 0.75rem 1rem;
}

.g6-rail__filter {
  display: block;
  width: calc(100% - 1rem);
  margin: 0 0.5rem 0.5rem;
  min-height: 40px;
  padding: 0.5rem 0.75rem;
  background: var(--g6-surface-1);
  border: 1px solid var(--g6-rule-strong);
  border-radius: var(--g6-radius);
  color: var(--g6-text);
  font-size: var(--g6-text-sm);
}

.g6-rail__filter::placeholder {
  color: var(--g6-text-3);
  opacity: 1;
}

.g6-rail__filter:focus-visible {
  outline-offset: 1px;
  border-color: var(--g6-focus);
}

.g6-rail__status {
  margin: 0 0.75rem;
  min-height: 1.25rem;
  font-size: var(--g6-text-xs);
  color: var(--g6-text-3);
}

.g6-rail h2 {
  display: flex;
  justify-content: space-between;
  margin: 1.25rem 0.75rem 0.4rem;
  font-size: var(--g6-text-xs);
  font-weight: var(--g6-weight-semibold);
  letter-spacing: var(--g6-track-label);
  text-transform: uppercase;
  color: var(--g6-text-3);
}

.g6-rail h2 span {
  font-variant-numeric: tabular-nums;
  font-weight: var(--g6-weight-regular);
}

.g6-rail a {
  position: relative;
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 0.25rem;
  min-height: 40px;
  padding: 0.55rem 0.75rem;
  border-radius: var(--g6-radius-sm);
  color: var(--g6-text-2);
  text-decoration: none;
  font-size: var(--g6-text-sm);
  line-height: 1.35;
}

.g6-rail a:hover {
  background: var(--g6-surface-1);
  color: var(--g6-text);
}

.g6-rail a[aria-current="page"] {
  background: var(--g6-surface-2);
  color: var(--g6-text);
  font-weight: var(--g6-weight-medium);
}

.g6-rail a[aria-current="page"]::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 2px;
  background: var(--g6-identity-labs);
}

.g6-rail a[hidden] {
  display: none;
}

.g6-rail__no {
  font-variant-numeric: tabular-nums;
  color: var(--g6-text-3);
  font-size: var(--g6-text-xs);
}

.g6-rail__time {
  font-variant-numeric: tabular-nums;
  color: var(--g6-text-3);
  font-size: var(--g6-text-xs);
}

.g6-rail__progress {
  margin: 1.75rem 0.75rem 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--g6-rule);
  font-size: var(--g6-text-xs);
  color: var(--g6-text-3);
}

.g6-rail__progress-line {
  display: flex;
  justify-content: space-between;
}

.g6-rail__progress strong {
  color: var(--g6-text);
  font-variant-numeric: tabular-nums;
}

.g6-rail__progress progress {
  display: block;
  width: 100%;
  height: 4px;
  margin-top: 0.6rem;
  appearance: none;
  border: 0;
  background: var(--g6-rule);
  border-radius: 2px;
  overflow: hidden;
}

.g6-rail__progress progress::-webkit-progress-bar {
  background: var(--g6-rule);
}

.g6-rail__progress progress::-webkit-progress-value {
  background: var(--g6-state-stable);
}

.g6-rail__progress progress::-moz-progress-bar {
  background: var(--g6-state-stable);
}

.g6-rail__progress p {
  margin-top: 0.6rem;
}

.g6-rail__close,
.g6-doc__menu {
  display: none;
}

/* page heading row inside the body */
.g6-doc__crumbs {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  align-items: center;
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
  max-width: var(--g6-measure);
}

.g6-doc__crumbs a {
  color: var(--g6-text-3);
  text-decoration: none;
}

.g6-doc__crumbs a:hover {
  color: var(--g6-text);
}

.g6-doc__meta {
  display: inline-flex;
  gap: 1rem;
  align-items: baseline;
  font-size: var(--g6-text-sm);
  color: var(--g6-text-3);
}

/* on-page contents */
.g6-toc__title {
  margin-bottom: 0.75rem;
}

.g6-toc ol {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--g6-rule);
}

.g6-toc a {
  display: block;
  padding: 0.35rem 0 0.35rem 0.9rem;
  margin-left: -1px;
  border-left: 1px solid transparent;
  color: var(--g6-text-3);
  text-decoration: none;
  line-height: 1.4;
}

.g6-toc a:hover {
  color: var(--g6-text);
  border-left-color: var(--g6-text-3);
}

.g6-toc-inline {
  display: none;
  margin: 0 0 2rem;
  border: 1px solid var(--g6-rule);
  border-radius: var(--g6-radius);
  max-width: var(--g6-measure);
}

.g6-toc-inline > summary {
  min-height: 44px;
  display: flex;
  align-items: center;
  padding: 0.5rem 1rem;
  cursor: pointer;
  font-size: var(--g6-text-sm);
  font-weight: var(--g6-weight-medium);
}

.g6-toc-inline .g6-toc {
  padding: 0 1rem 1rem;
}

/* lesson foot */
.g6-doc__foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem 2rem;
  max-width: var(--g6-measure);
  margin-top: clamp(3rem, 6vw, 5rem);
  padding-top: 1.5rem;
  border-top: 1px solid var(--g6-rule-strong);
  font-size: var(--g6-text-sm);
  color: var(--g6-text-3);
}

.g6-study {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  min-height: 44px;
  padding: 0.6rem 1.1rem;
  border: 1px solid var(--g6-rule-strong);
  border-radius: var(--g6-radius);
  background: transparent;
  color: var(--g6-text);
  font-size: var(--g6-text-sm);
  font-weight: var(--g6-weight-semibold);
  cursor: pointer;
  transition: background-color var(--g6-dur-1) linear, border-color var(--g6-dur-1) linear;
}

.g6-study::before {
  content: "";
  width: 0.75rem;
  height: 0.75rem;
  box-shadow: inset 0 0 0 1.5px currentColor;
}

.g6-study:hover {
  background: var(--g6-surface-2);
}

.g6-study.done,
.g6-study[aria-pressed="true"] {
  border-color: var(--g6-state-stable);
  color: var(--g6-state-stable);
}

.g6-study.done::before,
.g6-study[aria-pressed="true"]::before {
  background: currentColor;
}

@media (max-width: 1180px) {
  .g6-doc {
    grid-template-columns: 15rem minmax(0, 1fr);
  }
  .g6-doc__toc {
    display: none;
  }
  .g6-toc-inline {
    display: block;
  }
}

@media (max-width: 860px) {
  .g6-doc {
    grid-template-columns: minmax(0, 1fr);
  }
  .g6-doc__menu {
    display: inline-flex;
  }
  .g6-doc__nav {
    display: none;
    position: fixed;
    inset: var(--g6-bar-h) 0 0 0;
    z-index: 40;
    max-height: none;
    padding: 1.25rem var(--g6-gutter) 2rem;
    background: var(--g6-canvas);
    border-right: 0;
  }
  .g6-doc__nav.open {
    display: block;
  }
  .g6-rail__close {
    display: inline-flex;
  }
}

/* ── prose ───────────────────────────────────────────────────────────────── */
.g6-prose {
  max-width: var(--g6-measure);
  font-size: var(--g6-text-read);
  line-height: 1.7;
  color: var(--g6-text-2);
}

.g6-prose > :first-child {
  margin-top: 0;
}

.g6-prose h1 {
  font-size: clamp(2rem, 1.45rem + 2.4vw, 3.5rem);
  letter-spacing: var(--g6-track-display);
  line-height: 1.02;
  color: var(--g6-text);
  margin: 0 0 1.5rem;
}

.g6-prose h2 {
  font-size: clamp(1.5rem, 1.25rem + 0.9vw, 2rem);
  color: var(--g6-text);
  margin: 3.25rem 0 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--g6-rule);
}

.g6-prose h3 {
  font-size: var(--g6-text-lg);
  color: var(--g6-text);
  margin: 2.25rem 0 0.75rem;
}

.g6-prose h4 {
  font-size: var(--g6-text-md);
  color: var(--g6-text);
  margin: 1.75rem 0 0.5rem;
}

.g6-prose p,
.g6-prose ul,
.g6-prose ol,
.g6-prose dl,
.g6-prose table,
.g6-prose pre,
.g6-prose blockquote,
.g6-prose details,
.g6-prose figure {
  margin: 0 0 1.25rem;
}

.g6-prose .lead,
.g6-prose > p:first-of-type:is(.lead) {
  font-size: var(--g6-text-lg);
  color: var(--g6-text);
}

.g6-prose strong {
  color: var(--g6-text);
  font-weight: var(--g6-weight-semibold);
}

.g6-prose ul,
.g6-prose ol {
  padding-left: 1.35em;
}

.g6-prose li + li {
  margin-top: 0.4rem;
}

.g6-prose li::marker {
  color: var(--g6-text-3);
  font-variant-numeric: tabular-nums;
}

.g6-prose :not(pre) > code {
  padding: 0.1em 0.35em;
  background: var(--g6-surface-2);
  border-radius: var(--g6-radius-sm);
  color: var(--g6-text);
  font-size: 0.9em;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.g6-prose pre {
  position: relative;
  overflow: auto;
  padding: 1.15rem 1.25rem;
  background: var(--g6-surface-1);
  border: 1px solid var(--g6-rule);
  border-left: 2px solid var(--g6-identity-labs);
  border-radius: var(--g6-radius);
  color: var(--g6-text);
  font-size: var(--g6-text-sm);
  line-height: 1.65;
  tab-size: 2;
}

.g6-prose pre code {
  font-size: inherit;
}

.g6-prose pre:focus-visible,
.g6-prose table:focus-visible,
.g6-prose [tabindex="0"]:focus-visible {
  outline-offset: 2px;
}

.g6-prose blockquote {
  padding: 1rem 1.25rem;
  background: var(--g6-note-bg);
  border-left: 2px solid var(--g6-identity-live);
  border-radius: 0 var(--g6-radius) var(--g6-radius) 0;
  color: var(--g6-text);
}

.g6-prose blockquote > :last-child {
  margin-bottom: 0;
}

.g6-prose table {
  display: block;
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
  font-size: var(--g6-text-sm);
  line-height: 1.5;
}

.g6-prose th,
.g6-prose td {
  padding: 0.7rem 1rem 0.7rem 0;
  border-bottom: 1px solid var(--g6-rule);
  text-align: left;
  vertical-align: top;
  min-width: 7rem;
}

.g6-prose th {
  color: var(--g6-text-3);
  font-size: var(--g6-text-xs);
  font-weight: var(--g6-weight-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
  border-bottom-color: var(--g6-rule-strong);
}

.g6-prose td:first-child {
  color: var(--g6-text);
  font-weight: var(--g6-weight-medium);
}

.g6-prose details {
  border: 1px solid var(--g6-rule);
  border-radius: var(--g6-radius);
  padding: 0 1.15rem;
}

.g6-prose details > summary {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-height: 48px;
  cursor: pointer;
  color: var(--g6-text);
  font-weight: var(--g6-weight-medium);
  list-style: none;
}

.g6-prose details > summary::-webkit-details-marker {
  display: none;
}

.g6-prose details > summary::before {
  content: "+";
  display: inline-grid;
  place-items: center;
  width: 1.25rem;
  height: 1.25rem;
  border: 1px solid var(--g6-rule-strong);
  border-radius: var(--g6-radius-sm);
  font-size: 0.85rem;
  line-height: 1;
  color: var(--g6-text-2);
}

.g6-prose details[open] > summary::before {
  content: "−";
}

.g6-prose details[open] {
  padding-bottom: 1rem;
}

.g6-prose img {
  border-radius: var(--g6-radius);
}

.g6-prose hr {
  margin: 3rem 0;
}

/* method metadata (chapters/labs) */
.g6-prose .method-meta {
  display: grid;
  grid-template-columns: minmax(7rem, 11rem) minmax(0, 1fr);
  margin: 0 0 2.25rem;
  border-top: 1px solid var(--g6-rule-strong);
  font-size: var(--g6-text-sm);
}

.g6-prose .method-meta dt,
.g6-prose .method-meta dd {
  margin: 0;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--g6-rule);
}

.g6-prose .method-meta dt {
  color: var(--g6-text-3);
  padding-right: 1rem;
}

.g6-prose .method-meta dd {
  color: var(--g6-text);
}

@media (max-width: 600px) {
  .g6-prose .method-meta {
    grid-template-columns: 1fr;
  }
  .g6-prose .method-meta dt {
    padding-bottom: 0;
    border-bottom: 0;
  }
}

/* diagrams */
.g6-figure {
  margin: 1.5rem 0 2.5rem;
}

.g6-figure__scroll {
  overflow-x: auto;
  padding: 1rem;
  background: var(--g6-surface-1);
  border: 1px solid var(--g6-rule);
  border-radius: var(--g6-radius);
}

.g6-figure__scroll img {
  min-width: 40rem;
  width: 100%;
  border-radius: 0;
}

.g6-figure figcaption,
.g6-figure__links {
  margin-top: 0.6rem;
  font-size: var(--g6-text-sm);
  color: var(--g6-text-3);
}

/* Inline diagrams generated with g6-dia-* classes follow the active mode. */
.g6-dia {
  width: 100%;
  height: auto;
  min-width: 40rem;
}
.g6-dia .g6-dia-bg { fill: var(--g6-surface-1); }
.g6-dia .g6-dia-node { fill: var(--g6-canvas); }
.g6-dia .g6-dia-label { fill: var(--g6-text); }
.g6-dia .g6-dia-sub,
.g6-dia .g6-dia-kicker { fill: var(--g6-text-3); }
.g6-dia .g6-dia-edge,
.g6-dia .g6-dia-arrowhead { stroke: var(--g6-text-3); }
.g6-dia .g6-dia-node.g6-dia-main { stroke: var(--g6-accent-labs-text); }
.g6-dia .g6-dia-node.g6-dia-alt { stroke: var(--g6-accent-live-text); }
.g6-dia .g6-dia-node.g6-dia-gate { stroke: var(--g6-state-attention); }
.g6-dia .g6-dia-node.g6-dia-muted { stroke: var(--g6-text-3); }
.g6-dia .g6-dia-tab.g6-dia-main { fill: var(--g6-accent-labs-text); }
.g6-dia .g6-dia-tab.g6-dia-alt { fill: var(--g6-accent-live-text); }
.g6-dia .g6-dia-tab.g6-dia-gate { fill: var(--g6-state-attention); }
.g6-dia .g6-dia-tab.g6-dia-muted { fill: var(--g6-text-3); }
.g6-figure__scroll:has(.g6-dia) {
  padding: 0;
  background: none;
  border: 0;
}

/* ── gnu6-design · motion ─────────────────────────────────────────────────
   gnosix_DS motion profile: causality, interruptibility, reduced-motion
   equivalence, stillness-before-climax. Marks never move (MOT-BAN-IDENTITY-MOTION):
   the registration frame draws around a still cube. Durations here are local
   to this web target and are not DS tokens (MOT-BAN-TOKEN-LADDER). */

@media (prefers-reduced-motion: no-preference) {
  /* waterfall-entry: indices arrive in reading order, once. */
  .g6-enter > * {
    animation: g6-rise var(--g6-dur-3) var(--g6-ease-out) both;
  }
  .g6-enter > *:nth-child(2) { animation-delay: 40ms; }
  .g6-enter > *:nth-child(3) { animation-delay: 80ms; }
  .g6-enter > *:nth-child(4) { animation-delay: 120ms; }
  .g6-enter > *:nth-child(5) { animation-delay: 160ms; }
  .g6-enter > *:nth-child(6) { animation-delay: 200ms; }
  .g6-enter > *:nth-child(7) { animation-delay: 240ms; }
  .g6-enter > *:nth-child(n + 8) { animation-delay: 280ms; }

  /* The frame measures in; the mark is already there and does not move. */
  .g6-specimen__frame {
    animation: g6-frame-in 700ms var(--g6-ease-out) both;
  }

  .g6-menu,
  .g6-sysmenu[open] .g6-sysmenu__panel {
    animation: g6-drop 160ms var(--g6-ease-out) both;
  }
}

/* Entrance motion is transform-only. An opacity ramp makes text unreadable while it runs and
   fails contrast tooling that samples at load; tools/build.py rejects opacity inside @keyframes. */
@keyframes g6-rise {
  from {
    transform: translateY(10px);
  }
}

@keyframes g6-drop {
  from {
    transform: translateY(-4px);
  }
}

@keyframes g6-frame-in {
  from {
    --g6-tick: 0px;
  }
}

@property --g6-tick {
  syntax: "<length>";
  inherits: true;
  initial-value: 22px;
}

/* Reduced motion: same states, no travel. Hover/focus remain instant state changes. */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
    scroll-behavior: auto !important;
  }
  .g6-action[aria-busy="true"]::before {
    animation: none;
    border-right-color: currentColor;
    opacity: 0.6;
  }
}