/* =====================================================
   WizusLabs Site — style.css (v1, Editorial Lab Journal)
   Single-file stylesheet. No preprocessor. No build step.
   Traceability: every value resolves to a token in
   docs/design/design-system.md §2 / §14.
   ===================================================== */

/* =====================================================
   TOKENS — design tokens as CSS custom properties
   ===================================================== */

:root {
  /* Color — light (default) */
  --ink: #111418;
  --paper: #FBF9F4;
  --paper-raised: #FFFFFF;
  --rule: #D7D2C4;
  --muted: #5B5E66;
  --accent: #7A1F1F;
  --accent-soft: #F2E6E4;
  --accent-cool: #1E3A5F;
  --accent-cool-soft: #E8EDF5;
  --signal: #2E6B3F;
  --signal-soft: #E3EFE6;
  --warn: #8A5A10;
  --warn-soft: #F4EAD6;
  --focus-ring: #7A1F1F;
  --selection-bg: #F2E6E4;
  --selection-fg: #111418;

  /* Typography */
  --font-serif: "Source Serif 4", Charter, "Iowan Old Style", Georgia, "Times New Roman", serif;
  --font-mono: "JetBrains Mono", "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --size-00: 0.6875rem;
  --size-01: 0.75rem;
  --size-02: 0.875rem;
  --size-03: 1rem;
  --size-04: 1.125rem;
  --size-05: 1.35rem;
  --size-06: 1.62rem;
  --size-07: 1.94rem;
  --size-08: 2.33rem;
  --size-09: 2.8rem;
  --lh-tight: 1.15;
  --lh-snug: 1.3;
  --lh-normal: 1.55;
  --lh-relaxed: 1.7;
  --tracking-tight: -0.01em;
  --tracking-normal: 0;
  --tracking-mono: 0.02em;
  --tracking-wide: 0.06em;

  /* Spacing (4px base) */
  --space-0: 4px;
  --space-1: 8px;
  --space-2: 12px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --space-6: 48px;
  --space-7: 64px;
  --space-8: 96px;
  --space-9: 128px;

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Duration */
  --duration-instant: 0ms;
  --duration-micro: 160ms;
  --duration-ui: 240ms;
  --duration-content: 320ms;
  --duration-page: 480ms;

  /* Easing */
  --ease-out: cubic-bezier(0.2, 0.7, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-linear: linear;

  /* Shadow — light */
  --shadow-sm: 0 1px 2px rgba(17, 20, 24, 0.04);
  --shadow-md: 0 4px 12px rgba(17, 20, 24, 0.06);
  --shadow-lg: 0 12px 32px rgba(17, 20, 24, 0.08);

  /* Measure */
  --measure-short: 52ch;
  --measure-base: 68ch;
  --measure-long: 80ch;

  /* Z-index */
  --z-base: 0;
  --z-raised: 1;
  --z-nav: 20;
  --z-overlay: 50;
  --z-toast: 80;
  --z-top: 100;

  /* Opacity */
  --opacity-disabled: 0.48;
  --opacity-muted: 0.72;
  --opacity-hover-wash: 0.08;

  /* Breakpoint reference values (media queries use em literals per design system §8) */
  --bp-sm: 30em;
  --bp-md: 48em;
  --bp-lg: 64em;
  --bp-xl: 80em;
  --bp-2xl: 90em;
}

/* Dark theme — matches OS preference unless user pinned a theme */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink: #EDECE7;
    --paper: #0E1013;
    --paper-raised: #161A20;
    --rule: #2A2E36;
    --muted: #9AA0AC;
    --accent: #D89A93;
    --accent-soft: #2B1C1C;
    --accent-cool: #8BA3C4;
    --accent-cool-soft: #1C2633;
    --signal: #6EB37F;
    --signal-soft: #1A2A20;
    --warn: #D6A85E;
    --warn-soft: #2A2212;
    --focus-ring: #D89A93;
    --selection-bg: #2B1C1C;
    --selection-fg: #EDECE7;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.45);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);
  }
}

/* Explicit user override — wins over OS */
[data-theme="dark"] {
  --ink: #EDECE7;
  --paper: #0E1013;
  --paper-raised: #161A20;
  --rule: #2A2E36;
  --muted: #9AA0AC;
  --accent: #D89A93;
  --accent-soft: #2B1C1C;
  --accent-cool: #8BA3C4;
  --accent-cool-soft: #1C2633;
  --signal: #6EB37F;
  --signal-soft: #1A2A20;
  --warn: #D6A85E;
  --warn-soft: #2A2212;
  --focus-ring: #D89A93;
  --selection-bg: #2B1C1C;
  --selection-fg: #EDECE7;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);
}

/* Force-light override (wins over prefers-color-scheme:dark) */
[data-theme="light"] {
  --ink: #111418;
  --paper: #FBF9F4;
  --paper-raised: #FFFFFF;
  --rule: #D7D2C4;
  --muted: #5B5E66;
  --accent: #7A1F1F;
  --accent-soft: #F2E6E4;
  --accent-cool: #1E3A5F;
  --accent-cool-soft: #E8EDF5;
  --signal: #2E6B3F;
  --signal-soft: #E3EFE6;
  --warn: #8A5A10;
  --warn-soft: #F4EAD6;
  --focus-ring: #7A1F1F;
  --selection-bg: #F2E6E4;
  --selection-fg: #111418;
  --shadow-sm: 0 1px 2px rgba(17, 20, 24, 0.04);
  --shadow-md: 0 4px 12px rgba(17, 20, 24, 0.06);
  --shadow-lg: 0 12px 32px rgba(17, 20, 24, 0.08);
}

/* =====================================================
   BASE — reset, root, body, html, selection, focus
   ===================================================== */

/* Self-hosted fonts — Latin subset via unicode-range, font-display: swap.
   Source Serif 4 ships as a variable Roman + a variable italic companion.
   JetBrains Mono ships as a single static Regular (400); the variable cut
   is TTF-only upstream, so italic/bold synthesis is acceptable for the
   narrow metadata use of the mono face. */
@font-face {
  font-family: "Source Serif 4";
  src: url("../fonts/source-serif-4.woff2") format("woff2-variations"),
       url("../fonts/source-serif-4.woff2") format("woff2");
  font-weight: 200 900;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-024F, U+0300-036F, U+2000-206F, U+2070-209F, U+20A0-20CF, U+2100-214F, U+2200-22FF;
}

@font-face {
  font-family: "Source Serif 4";
  src: url("../fonts/source-serif-4-italic.woff2") format("woff2-variations"),
       url("../fonts/source-serif-4-italic.woff2") format("woff2");
  font-weight: 200 900;
  font-style: italic;
  font-display: swap;
  unicode-range: U+0000-024F, U+0300-036F, U+2000-206F, U+2070-209F, U+20A0-20CF, U+2100-214F, U+2200-22FF;
}

@font-face {
  font-family: "JetBrains Mono";
  src: url("../fonts/jetbrains-mono.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-024F, U+0300-036F, U+2000-206F, U+2070-209F, U+20A0-20CF, U+2100-214F, U+2200-22FF;
}

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

html {
  color-scheme: light dark;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  hanging-punctuation: first last;
}

body {
  margin: 0;
  font-family: var(--font-serif);
  font-size: var(--size-03);
  font-weight: var(--weight-regular);
  line-height: var(--lh-normal);
  color: var(--ink);
  background: var(--paper);
  font-feature-settings: "kern" 1, "liga" 1, "calt" 1, "onum" 1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Prevent scroll-lock while mobile nav is open */
html[data-nav-open="true"], html[data-nav-open="true"] body { overflow: hidden; }

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

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-family: var(--font-serif);
  color: var(--ink);
  text-wrap: pretty;
}
h1 { font-size: var(--size-08); font-weight: var(--weight-regular); line-height: var(--lh-snug); letter-spacing: var(--tracking-tight); }
h2 { font-size: var(--size-07); font-weight: var(--weight-regular); line-height: var(--lh-snug); letter-spacing: var(--tracking-normal); }
h3 { font-size: var(--size-06); font-weight: var(--weight-medium); line-height: var(--lh-snug); }
h4 { font-size: var(--size-05); font-weight: var(--weight-medium); line-height: var(--lh-snug); }
h5 { font-size: var(--size-04); font-weight: var(--weight-medium); line-height: var(--lh-snug); }
h6 { font-size: var(--size-03); font-weight: var(--weight-medium); line-height: var(--lh-snug); }

p {
  margin: 0 0 var(--space-3) 0;
  hyphens: manual;
}

a {
  color: var(--accent);
  text-decoration: none;
}

ul, ol { margin: 0 0 var(--space-3) 0; padding-inline-start: var(--space-4); }
li + li { margin-block-start: var(--space-1); }

code, kbd, samp, pre {
  font-family: var(--font-mono);
  font-size: var(--size-02);
  font-feature-settings: "kern" 1, "liga" 0, "calt" 0;
}

hr { border: 0; border-block-start: 1px solid var(--rule); margin-block: var(--space-6) 0; }

::selection { background: var(--selection-bg); color: var(--selection-fg); }

:focus { outline: 2px solid var(--focus-ring); outline-offset: 3px; }
:focus:not(:focus-visible) { outline: none; }
:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 3px; }

/* aria-live region for screen-reader announcements */
.sr-live { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

/* =====================================================
   LAYOUT — container, grid, stack, reading-measure
   ===================================================== */

.container {
  inline-size: 100%;
  max-inline-size: 1200px;
  margin-inline: auto;
  padding-inline: var(--space-4);
}
@media (min-width: 48em) {
  .container { padding-inline: var(--space-5); }
}

.reading-measure { max-inline-size: var(--measure-base); margin-inline: auto; }
.measure-short  { max-inline-size: var(--measure-short); }
.measure-long   { max-inline-size: var(--measure-long); }

.grid-12 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  column-gap: var(--space-4);
  row-gap: var(--space-5);
}
@media (min-width: 48em) {
  .grid-12 { grid-template-columns: repeat(8, 1fr); }
}
@media (min-width: 64em) {
  .grid-12 { grid-template-columns: repeat(12, 1fr); }
}

.stack > * + * { margin-block-start: var(--space-3); }
.stack-lg > * + * { margin-block-start: var(--space-5); }

/* Section rhythm: mobile 48 → tablet 64 → desktop 96 */
.section { padding-block: var(--space-6); }
@media (min-width: 48em) { .section { padding-block: var(--space-7); } }
@media (min-width: 64em) { .section { padding-block: var(--space-8); } }

.page-main {
  padding-block-start: var(--space-7);
  padding-block-end: var(--space-8);
}
@media (min-width: 64em) {
  .page-main {
    padding-block-start: var(--space-8);
    padding-block-end: var(--space-9);
  }
}

/* =====================================================
   COMPONENTS — §7 of design system (alphabetized)
   ===================================================== */

/* ----- Skip-link (§9.4) ----- */
.skip-link {
  position: fixed;
  inset-block-start: var(--space-2);
  inset-inline-start: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--paper);
  color: var(--accent);
  border: 1px solid var(--rule);
  border-radius: var(--radius-sm);
  font-family: var(--font-serif);
  font-weight: var(--weight-medium);
  font-size: var(--size-02);
  z-index: var(--z-top);
  transform: translateY(-120%);
}
@media (prefers-reduced-motion: no-preference) {
  .skip-link { transition: transform var(--duration-micro) var(--ease-out); }
}
.skip-link:focus-visible { transform: translateY(0); }

/* ----- Wordmark (§11) ----- */
.wordmark {
  display: inline-block;
  font-family: var(--font-serif);
  font-size: var(--size-04);
  font-weight: var(--weight-regular);
  letter-spacing: -0.015em;
  line-height: 1;
  color: inherit;
  text-decoration: none;
  white-space: nowrap;
}
.wordmark__first {
  color: var(--ink);
  border-block-end: 1.5px solid var(--accent);
  padding-block-end: 2px;
}
.wordmark__second { color: var(--accent); }
.wordmark--small { font-size: var(--size-03); }
.wordmark--small .wordmark__first { border-block-end: 0; padding-block-end: 0; }
.wordmark--large { font-size: var(--size-07); }

/* ----- Link (§7.3) ----- */
.link {
  color: var(--accent);
  text-decoration: none;
  background-image: linear-gradient(currentColor, currentColor);
  background-size: 0 1px;
  background-position: 0 calc(100% - 1px);
  background-repeat: no-repeat;
}
@media (prefers-reduced-motion: no-preference) {
  .link { transition: background-size var(--duration-micro) var(--ease-out); }
}
.link:hover, .link:focus-visible { background-size: 100% 1px; }
.link--inverted { color: var(--paper); }
.link--external::after {
  content: " \2197";
  font-family: var(--font-mono);
  font-size: 0.85em;
  margin-inline-start: 0.15em;
}

/* ----- Button (§7.4) ----- */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  min-height: 44px;
  min-width: 44px;
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-serif);
  font-size: var(--size-03);
  font-weight: var(--weight-regular);
  line-height: var(--lh-snug);
  background: var(--accent);
  color: var(--paper);
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
}
@media (prefers-reduced-motion: no-preference) {
  .button {
    transition: background-color var(--duration-micro) var(--ease-out),
                transform var(--duration-micro) var(--ease-out);
  }
}
.button:hover { background: color-mix(in srgb, var(--accent) 90%, black); }
.button:active { transform: translateY(1px); }
.button[disabled], .button.is-disabled {
  opacity: var(--opacity-disabled);
  cursor: not-allowed;
  pointer-events: none;
}
.button--secondary, .button--ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--rule);
}
.button--secondary:hover, .button--ghost:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
}

/* ----- Pill (§7.5) ----- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-0);
  min-height: 24px;
  padding: var(--space-0) var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--size-01);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-mono);
  border-radius: var(--radius-sm);
  border: 1px solid var(--rule);
  background: var(--paper-raised);
  color: var(--muted);
}
.pill--accent { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); }
.pill--accent-cool { background: var(--accent-cool-soft); color: var(--accent-cool); border-color: var(--accent-cool); }
.pill--signal { background: var(--signal-soft); color: var(--signal); border-color: var(--signal); }
.pill--warn { background: var(--warn-soft); color: var(--warn); border-color: var(--warn); }

/* ----- Callout (§7.8) ----- */
.callout {
  padding: var(--space-4) var(--space-5);
  border-inline-start: 3px solid var(--accent-cool);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: var(--accent-cool-soft);
  margin-block: var(--space-5);
}
.callout__title { font-size: var(--size-03); font-weight: var(--weight-medium); margin-block-end: var(--space-1); color: var(--accent-cool); }
.callout--caution { border-inline-start-color: var(--warn); background: var(--warn-soft); }
.callout--caution .callout__title { color: var(--warn); }
.callout--quote {
  border-inline-start-color: var(--accent);
  background: var(--accent-soft);
  font-style: italic;
}
.callout--quote .callout__title { color: var(--accent); font-style: normal; }

/* ----- Nav (§7.1) ----- */
.nav {
  position: sticky;
  inset-block-start: 0;
  z-index: var(--z-nav);
  background: var(--paper);
  border-block-end: 1px solid transparent;
}
@media (prefers-reduced-motion: no-preference) {
  .nav {
    transition: padding var(--duration-ui) var(--ease-out),
                background-color var(--duration-ui) var(--ease-out),
                border-color var(--duration-ui) var(--ease-out);
  }
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 64px;
  padding-block: var(--space-2);
}
@media (min-width: 48em) {
  .nav__inner { min-height: 72px; padding-block: var(--space-4); }
}
html[data-nav-scrolled="true"] .nav {
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: saturate(1.05) blur(6px);
  -webkit-backdrop-filter: saturate(1.05) blur(6px);
  border-block-end-color: var(--rule);
}
@media (min-width: 48em) {
  html[data-nav-scrolled="true"] .nav__inner { min-height: 56px; padding-block: var(--space-2); }
}

.nav__links {
  display: none;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--space-5);
}
@media (min-width: 48em) {
  .nav__links { display: flex; }
}
.nav__link {
  font-family: var(--font-serif);
  font-size: var(--size-03);
  font-weight: var(--weight-regular);
  color: var(--ink);
  text-decoration: none;
  background-image: linear-gradient(var(--accent), var(--accent));
  background-size: 0 1px;
  background-position: 0 100%;
  background-repeat: no-repeat;
  padding-block-end: 2px;
}
@media (prefers-reduced-motion: no-preference) {
  .nav__link { transition: background-size var(--duration-micro) var(--ease-out); }
}
.nav__link:hover, .nav__link:focus-visible { background-size: 100% 1px; }
.nav__link[aria-current="page"] {
  background-size: 100% 2px;
  background-position: 0 calc(100% - 2px);
}

.nav__actions { display: flex; align-items: center; gap: var(--space-2); }

.nav__hamburger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  inline-size: 44px;
  block-size: 44px;
  background: transparent;
  border: none;
  color: var(--ink);
  cursor: pointer;
  padding: 0;
}
@media (min-width: 48em) { .nav__hamburger { display: none; } }

/* Mobile nav panel */
.nav__panel {
  position: fixed;
  inset: 0;
  background: var(--paper);
  z-index: var(--z-overlay);
  padding: 25vh var(--space-5) var(--space-7);
  transform: translateX(100%);
  visibility: hidden;
}
@media (prefers-reduced-motion: no-preference) {
  .nav__panel {
    transition: transform var(--duration-ui) var(--ease-out),
                visibility 0s linear var(--duration-ui);
  }
}
html[data-nav-open="true"] .nav__panel {
  transform: translateX(0);
  visibility: visible;
  transition-delay: 0s;
}
.nav__panel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  text-align: center;
}
.nav__panel-link {
  font-family: var(--font-serif);
  font-size: var(--size-07);
  color: var(--ink);
  text-decoration: none;
}
.nav__panel-close {
  position: absolute;
  inset-block-start: var(--space-3);
  inset-inline-end: var(--space-3);
  inline-size: 44px;
  block-size: 44px;
  background: transparent;
  border: none;
  color: var(--ink);
  cursor: pointer;
}
@media (min-width: 48em) { .nav__panel { display: none; } }

/* ----- ThemeToggle (§7.10) ----- */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  inline-size: 44px;
  block-size: 44px;
  padding: 0;
  background: transparent;
  border: none;
  color: var(--ink);
  border-radius: var(--radius-full);
  cursor: pointer;
}
@media (prefers-reduced-motion: no-preference) {
  .theme-toggle { transition: background-color var(--duration-ui) var(--ease-in-out); }
  .theme-toggle__icon { transition: transform var(--duration-ui) var(--ease-in-out); }
}
.theme-toggle:hover { background: var(--accent-soft); }
.theme-toggle__icon { inline-size: 24px; block-size: 24px; }
.theme-toggle[data-state="light"] .theme-toggle__icon { transform: rotate(180deg); }
.theme-toggle[data-state="dark"] .theme-toggle__icon { transform: rotate(360deg); }
.theme-toggle__label { /* Visible to SR; hidden on wide screens */ }
@media (min-width: 48em) {
  .theme-toggle__label {
    position: absolute; width: 1px; height: 1px;
    padding: 0; margin: -1px; overflow: hidden;
    clip: rect(0 0 0 0); white-space: nowrap; border: 0;
  }
}

/* ----- Footer (§7.2) ----- */
.footer {
  border-block-start: 1px solid var(--rule);
  padding: var(--space-7) var(--space-5) var(--space-5);
  background: var(--paper);
}
.footer__cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  max-inline-size: 1200px;
  margin-inline: auto;
}
@media (min-width: 48em) {
  .footer__cols { grid-template-columns: repeat(2, 1fr); gap: var(--space-5); }
}
@media (min-width: 64em) {
  .footer__cols { grid-template-columns: repeat(4, 1fr); }
  .footer__cols--3col { grid-template-columns: repeat(3, 1fr); }
}
.footer__heading {
  font-family: var(--font-mono);
  font-size: var(--size-01);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 var(--space-3);
}
.footer__list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: var(--space-1); }
.footer__list a {
  font-family: var(--font-serif);
  font-size: var(--size-02);
  color: var(--ink);
  text-decoration: none;
}
.footer__list a:hover, .footer__list a:focus-visible { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
  margin-block-start: var(--space-5);
  padding-block-start: var(--space-5);
  border-block-start: 1px solid var(--rule);
  max-inline-size: 1200px;
  margin-inline: auto;
  font-family: var(--font-mono);
  font-size: var(--size-01);
  letter-spacing: var(--tracking-mono);
  color: var(--muted);
}
.footer__mark { text-align: center; flex: 1; }

/* ----- HeroManifesto (§7.11) ----- */
.hero-manifesto {
  padding-block: var(--space-7) var(--space-6);
}
@media (min-width: 64em) {
  .hero-manifesto {
    min-height: min(720px, 88vh);
    padding-block: var(--space-8) var(--space-7);
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
  .hero-manifesto__grid {
    display: grid;
    grid-template-columns: minmax(0, 55fr) minmax(0, 45fr);
    column-gap: var(--space-7);
    align-items: center;
  }
}
.hero-manifesto__headline {
  font-size: var(--size-07);
  font-weight: var(--weight-regular);
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--ink);
  max-inline-size: 20ch;
}
@media (min-width: 48em) { .hero-manifesto__headline { font-size: var(--size-08); } }
@media (min-width: 64em) { .hero-manifesto__headline { font-size: var(--size-09); } }
.hero-manifesto__lead {
  font-size: var(--size-04);
  line-height: var(--lh-relaxed);
  color: var(--muted);
  max-inline-size: var(--measure-short);
  margin-block-start: var(--space-4);
}
.hero-manifesto__meta {
  font-family: var(--font-mono);
  font-size: var(--size-01);
  letter-spacing: var(--tracking-mono);
  color: var(--muted);
  margin-block-start: var(--space-5);
}
.hero-manifesto__cta {
  display: inline-block;
  margin-block-start: var(--space-5);
  color: var(--accent);
  font-size: var(--size-03);
}

/* Hero gallery — v7: asymmetric magazine. Earth (16:9 cinematic) spans the
   top row full-width. Bottom row pairs the very-tall quantum-computing
   photograph (1:2.9) on the left with the Robot (3:2 landscape) on the
   right, aligned to start so the quantum image "pokes" down past the Robot.
   Hidden on mobile; shown from tablet (48em) up. */
.hero-gallery { display: none; }
@media (min-width: 48em) {
  .hero-gallery {
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
    gap: var(--space-3);
    inline-size: 100%;
    max-inline-size: 480px;
    margin-block-start: var(--space-6);
    margin-inline: auto;
  }
}
@media (min-width: 64em) {
  .hero-gallery {
    max-inline-size: 560px;
    margin-block-start: 0;
    margin-inline: 0;
    justify-self: end;
  }
}
.hero-gallery__bottom {
  display: grid;
  grid-template-columns: 1fr 2.8fr;
  gap: var(--space-2);
  align-items: start;
}
.hero-gallery__earth,
.hero-gallery__robot,
.hero-gallery__quantum {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius-md);
  box-shadow: 0 0 0 1px var(--rule);
  background: var(--paper-raised);
}
.hero-gallery__earth {
  grid-column: 1 / -1;
  aspect-ratio: 16 / 9;
}
.hero-gallery__quantum {
  grid-column: 1;
  aspect-ratio: 1 / 2.9;
}
.hero-gallery__robot {
  grid-column: 2;
  aspect-ratio: 3 / 2;
}
.hero-gallery img {
  display: block;
  inline-size: 100%;
  block-size: 100%;
  object-fit: cover;
}
[data-theme="dark"] .hero-gallery__earth img,
[data-theme="dark"] .hero-gallery__robot img {
  filter: saturate(0.9);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .hero-gallery__earth img,
  :root:not([data-theme="light"]) .hero-gallery__robot img {
    filter: saturate(0.9);
  }
}

/* ----- PillarBlock (§7.12) ----- */
.pillar-block {
  padding-block: var(--space-8);
  border-block: 1px solid var(--rule);
}
.pillar-block__text {
  font-size: var(--size-06);
  font-weight: var(--weight-regular);
  line-height: var(--lh-snug);
  color: var(--ink);
  max-inline-size: var(--measure-short);
  margin-inline: auto;
}
@media (min-width: 48em) { .pillar-block__text { font-size: var(--size-07); } }
.pillar-block__emphasis { color: var(--accent); }

/* ----- ModelDiagram (§7.13) ----- */
.model-diagram { inline-size: 100%; block-size: auto; max-inline-size: 560px; margin-inline: auto; }
.model-diagram .line { stroke: var(--accent); stroke-width: 1; stroke-dasharray: 100; stroke-dashoffset: 100; fill: none; }
@media (prefers-reduced-motion: no-preference) {
  .model-diagram .line { transition: stroke-dashoffset var(--duration-content) var(--ease-out); }
}
.model-diagram .line.is-active { stroke-dashoffset: 0; }
.model-diagram .node circle { fill: var(--paper-raised); stroke: var(--rule); stroke-width: 1; }
.model-diagram .node--crew circle { fill: none; }
.model-diagram .node--human circle { stroke: var(--accent); stroke-width: 1.5; }
.model-diagram .node text {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.02em;
  fill: var(--muted);
}
.model-diagram .node--human text { font-family: var(--font-serif); font-size: 14px; fill: var(--ink); }
.model-diagram .node:focus-visible circle { stroke: var(--focus-ring); stroke-width: 2; outline: none; }

/* ----- AgentCard (§7.14) ----- */
.agent-card {
  position: relative;
  padding: var(--space-5);
  background: var(--paper-raised);
  border: 1px solid var(--rule);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.agent-card::before {
  content: "";
  position: absolute;
  inset-block: 0;
  inset-inline-start: 0;
  inline-size: 3px;
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: top;
}
@media (prefers-reduced-motion: no-preference) {
  .agent-card::before { transition: transform var(--duration-micro) var(--ease-out); }
}
.agent-card:hover::before, .agent-card:focus-within::before { transform: scaleY(1); }
.agent-card__name { font-size: var(--size-05); font-weight: var(--weight-medium); color: var(--ink); }
.agent-card__charter { font-size: var(--size-03); color: var(--muted); margin-block-start: var(--space-1); }
.agent-card__members {
  font-family: var(--font-mono);
  font-size: var(--size-01);
  letter-spacing: var(--tracking-mono);
  color: var(--muted);
  margin-block-start: var(--space-3);
}

/* ----- AppCard (§7.15) ----- */
.app-card {
  position: relative;
  padding: var(--space-4);
  background: var(--paper-raised);
  border: 1px solid var(--rule);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  display: grid;
  grid-template-columns: 64px 1fr;
  column-gap: var(--space-4);
  align-items: start;
}
@media (prefers-reduced-motion: no-preference) {
  .app-card {
    transition: transform var(--duration-micro) var(--ease-out),
                box-shadow var(--duration-micro) var(--ease-out);
  }
}
.app-card:hover, .app-card:focus-within { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.app-card__icon {
  inline-size: 64px;
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--paper);
  border: 1px solid var(--rule);
}
.app-card__name { font-size: var(--size-05); font-weight: var(--weight-medium); color: var(--ink); }
.app-card__tagline { font-size: var(--size-03); color: var(--muted); margin-block-start: var(--space-0); }
.app-card__team { font-family: var(--font-mono); font-size: var(--size-01); letter-spacing: var(--tracking-mono); color: var(--muted); margin-block-start: var(--space-2); }
.app-card--full { grid-template-columns: 1fr; }
.app-card__cover { aspect-ratio: 16 / 10; object-fit: cover; border-radius: var(--radius-md) var(--radius-md) 0 0; }

/* ----- App icon (post HOTFIX-04) -----
   Real app logos on AppCard surfaces and detail hero plates. Sizes are
   explicit so intrinsic width/height attrs in HTML match the rendered size
   and CLS stays at 0. */
.app-icon {
  display: block;
  border-radius: var(--radius-md);
  background: var(--paper);
  box-shadow: 0 0 0 1px var(--rule);
}
.app-icon--sm { inline-size: 56px; block-size: 56px; }
.app-icon--md { inline-size: 112px; block-size: 112px; }
.app-icon--lg { inline-size: 224px; block-size: 224px; }

/* App detail page — hero figure placeholder (§7.15, app detail template) */
.app-card__figure {
  margin: 0 0 var(--space-6) 0;
  background: var(--paper-raised);
  border: 1px solid var(--rule);
  border-radius: var(--radius-md);
  aspect-ratio: 2 / 1;
  overflow: hidden;
  display: grid;
  place-items: center;
}

/* App detail page — version / platform meta line under the app name */
.app-card__version {
  font-size: var(--size-01);
  letter-spacing: var(--tracking-mono);
  color: var(--muted);
}

/* Apps shelf (apps/index.html) — secondary policy line under each card */
.app-card__policies {
  font-size: var(--size-01);
  color: var(--muted);
}

/* App detail page — section rhythm between hero header and each body section */
.app-detail-section { margin-block-start: var(--space-7); }

/* Apps shelf (apps/index.html) — vertical rhythm wrappers */
.apps-shelf { margin-block-start: var(--space-6); }
.apps-shelf__note { margin-block-start: var(--space-7); }

/* "Shipped by" list on app detail pages — unbulleted, flush-left mono rows */
.shipped-by {
  list-style: none;
  padding: 0;
  margin: 0;
}

/* "Get it" store-link list — horizontal, wrap-capable, unbulleted */
.get-it-links {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}
/* Tighter variant for apps-shelf entries where vertical rhythm is denser */
.get-it-links--tight { gap: var(--space-3); }

/* ----- HumanCard (§7.16) ----- */
.human-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
  align-items: start;
}
@media (min-width: 48em) {
  .human-card { grid-template-columns: 120px 1fr; gap: var(--space-5); }
}
.human-card__glyph {
  inline-size: 120px;
  block-size: 120px;
  background: var(--paper-raised);
  border: 1px solid var(--rule);
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  font-family: var(--font-serif);
  font-size: var(--size-08);
  color: var(--accent);
}
.human-card__glyph span {
  border-block-end: 1px solid var(--rule);
  padding-block-end: 6px;
}
.human-card__name { font-size: var(--size-05); color: var(--ink); }
.human-card__role {
  font-family: var(--font-mono);
  font-size: var(--size-02);
  letter-spacing: var(--tracking-mono);
  color: var(--muted);
  margin-block-start: var(--space-0);
}
.human-card__line {
  font-size: var(--size-03);
  color: var(--ink);
  margin-block-start: var(--space-3);
  max-inline-size: var(--measure-short);
}

/* ----- ShippingLogItem (§7.17) ----- */
.shipping-log-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
  padding-block: var(--space-3);
  border-block-end: 1px solid var(--rule);
}
.shipping-log-item:last-of-type { border-block-end: 0; }
@media (min-width: 48em) {
  .shipping-log-item {
    grid-template-columns: 120px 1fr auto 2fr;
    column-gap: var(--space-4);
    align-items: baseline;
  }
}
.shipping-log-item__date {
  font-family: var(--font-mono);
  font-size: var(--size-01);
  letter-spacing: var(--tracking-mono);
  color: var(--muted);
}
.shipping-log-item__app { font-size: var(--size-03); font-weight: var(--weight-medium); color: var(--ink); }
.shipping-log-item__desc { font-size: var(--size-03); line-height: var(--lh-normal); color: var(--ink); }

/* ----- ManifestoQuote (§7.18) ----- */
.manifesto-quote {
  position: relative;
  margin-block: var(--space-6);
  padding-inline: var(--space-5);
  font-size: var(--size-06);
  font-weight: var(--weight-regular);
  line-height: var(--lh-snug);
  color: var(--ink);
  font-style: italic;
}
.manifesto-quote::before {
  content: "\201C";
  position: absolute;
  inset-block-start: -0.15em;
  inset-inline-start: 0;
  color: var(--accent);
  font-size: var(--size-08);
  line-height: 1;
  font-style: normal;
}
.manifesto-quote cite {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--size-01);
  letter-spacing: var(--tracking-mono);
  color: var(--muted);
  margin-block-start: var(--space-3);
  font-style: normal;
}
.manifesto-quote cite::before { content: "\2014 \00A0"; }

/* Reveal-on-scroll (motion #2) */
.reveal-on-scroll { opacity: 0; transform: translateY(8px); }
@media (prefers-reduced-motion: no-preference) {
  .reveal-on-scroll {
    transition: opacity var(--duration-content) var(--ease-out),
                transform var(--duration-content) var(--ease-out);
  }
}
.reveal-on-scroll.is-visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .reveal-on-scroll { opacity: 1; transform: none; }
}

/* ----- TeamSection (§7.19) ----- */
.team-section__heading { font-size: var(--size-07); }
.team-section__intro { font-size: var(--size-04); color: var(--muted); margin-block-start: var(--space-2); max-inline-size: var(--measure-short); }
.team-section__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-block-start: var(--space-5);
}
@media (min-width: 30em) {
  .team-section__grid { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
}
.team-section__strip {
  display: none; /* horizontal scroll strip reserved for mobile; see variant */
}

/* ----- ManifestoSignature (§7.20) ----- */
.manifesto-signature {
  margin-block-start: var(--space-6);
  padding-block-start: var(--space-4);
  border-block-start: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: var(--size-02);
  letter-spacing: var(--tracking-mono);
  color: var(--muted);
  text-align: start;
}
.manifesto-signature--footer-mark { font-size: var(--size-01); border-block-start: 0; padding-block-start: 0; margin-block-start: 0; }

/* ----- PolicyPage / SupportPage / LegalFrontmatter (§7.21) ----- */
.legal-frontmatter {
  margin-block-end: var(--space-6);
  padding-block-end: var(--space-5);
  border-block-end: 1px solid var(--rule);
}
.legal-frontmatter__title { font-size: var(--size-07); margin-block-start: var(--space-2); }
.legal-frontmatter__date {
  font-family: var(--font-mono);
  font-size: var(--size-01);
  letter-spacing: var(--tracking-mono);
  color: var(--muted);
  margin-block-start: var(--space-1);
}
.legal-frontmatter__back { display: inline-block; margin-block-start: var(--space-3); color: var(--accent); }

.policy-page, .support-page, .terms-page {
  max-inline-size: var(--measure-base);
  margin-inline: auto;
}
.policy-page ul, .policy-page ol,
.support-page ul, .support-page ol,
.terms-page ul, .terms-page ol {
  padding-inline-start: var(--space-4);
}
.policy-page li + li, .support-page li + li, .terms-page li + li { margin-block-start: var(--space-2); }

/* ----- NotFoundPage (§7.22) ----- */
.not-found {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-block-size: 80vh;
  padding-inline: var(--space-4);
}
.not-found__numeral {
  font-family: var(--font-mono);
  font-size: clamp(64px, 12vw, 112px);
  color: var(--accent);
  letter-spacing: var(--tracking-mono);
  line-height: 1;
}
.not-found__title { font-size: var(--size-06); margin-block-start: var(--space-4); }
.not-found__body { font-size: var(--size-03); color: var(--muted); max-inline-size: var(--measure-short); margin-block-start: var(--space-3); }
.not-found__actions { display: flex; gap: var(--space-4); margin-block-start: var(--space-5); flex-wrap: wrap; justify-content: center; }

/* ----- Interim agent glyph (§12) ----- */
.agent-glyph {
  inline-size: 48px;
  block-size: 48px;
  background: var(--paper-raised);
  border: 1px solid var(--rule);
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: var(--size-05);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-mono);
  color: var(--muted);
}

/* =====================================================
   UTILITIES — sr-only, visually-hidden, no-motion, tabular
   ===================================================== */

.u-sr-only,
.sr-only {
  position: absolute !important;
  inline-size: 1px !important;
  block-size: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0 0 0 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.u-tabular { font-feature-settings: "kern" 1, "lnum" 1, "tnum" 1; }
.u-mono { font-family: var(--font-mono); letter-spacing: var(--tracking-mono); }
.u-muted { color: var(--muted); }
.u-accent { color: var(--accent); }
.u-center { text-align: center; }
.u-hidden { display: none !important; }

.u-caps {
  font-family: var(--font-mono);
  font-size: var(--size-01);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--muted);
}

/* Global reduced-motion kill switch (§9.7) */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* =====================================================
   PRINT — minimal print styles for legal pages
   ===================================================== */

@media print {
  :root {
    --ink: #000;
    --paper: #fff;
    --paper-raised: #fff;
    --rule: #666;
    --muted: #333;
    --accent: #000;
  }
  body { background: #fff; color: #000; font-size: 11pt; line-height: 1.5; }
  .nav, .footer, .skip-link, .theme-toggle, .nav__hamburger, .nav__panel { display: none !important; }
  a { color: #000; text-decoration: underline; }
  a[href]::after { content: " (" attr(href) ")"; font-size: 0.85em; color: #333; }
  a[href^="#"]::after, a[href^="mailto:"]::after { content: ""; }
  h1, h2, h3 { page-break-after: avoid; }
  .policy-page, .support-page, .terms-page { max-inline-size: none; }
}