/* ============================================================
   polarize-ui — LANDING layer

   Components for a lab's front door: the top bar, the hero, section heads,
   the process steps, project features, repository cards, the changelog feed,
   article and story cards, archival plates, the principle block and the site
   footer. Drawn from the polarize.tech homepage redesign (2026-09-28).

   Load AFTER design.css (zero-build) or after src/index.css (React). Pair with
   cellfield.js for the animated speck background (<ui-cellfield>).

   Rules, the same as design.css and publication.css, checked by dev_check.py:
     · every colour is a token — no hex, no rgb()
     · the sans is never bold and never tracked
     · uppercase is always the mono face; the display serif is never uppercased
     · the brand colour is read through --pub-accent (see publication.css)
   ============================================================ */

/* ---------- Top bar ---------- */
.ui-topnav {
  position: sticky; top: 0; z-index: 30;
  display: flex; align-items: center; gap: var(--space-6);
  min-height: 72px;
  padding: 0 clamp(var(--space-4), 3vw, var(--space-7));
  background: color-mix(in oklab, var(--background) 88%, transparent);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-strong);
}
.ui-topnav__links { display: flex; align-items: center; gap: var(--space-5); flex: 1; min-width: 0; }
.ui-topnav__link {
  color: var(--muted-foreground); font-size: var(--text-lg); text-decoration: none;
  transition: color var(--motion-fast) cubic-bezier(.2, .7, .3, 1);
}
.ui-topnav__link:hover, .ui-topnav__link.is-current { color: var(--foreground); }
.ui-topnav__link:focus-visible { outline: 2px solid var(--ring); outline-offset: 3px; }
.ui-topnav__actions { display: flex; align-items: center; gap: var(--space-4); }
.ui-topnav__icon { display: inline-flex; align-items: center; gap: var(--space-2); }
.ui-topnav__icon svg { width: 18px; height: 18px; }

/* The phone menu: a <details>, so it opens without script. */
.ui-topnav__menu { display: none; margin-left: auto; }
.ui-topnav__menu > summary {
  list-style: none; cursor: pointer;
  width: 44px; height: 44px; display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border-strong); border-radius: var(--radius-xs); color: var(--foreground);
}
.ui-topnav__menu > summary::-webkit-details-marker { display: none; }
.ui-topnav__menu > summary:focus-visible { outline: 2px solid var(--ring); outline-offset: 2px; }
.ui-topnav__menu > summary svg { width: 20px; height: 20px; }
.ui-topnav__panel {
  position: absolute; left: 0; right: 0; top: 100%;
  display: flex; flex-direction: column; gap: var(--space-1);
  padding: var(--space-4) clamp(var(--space-4), 3vw, var(--space-7)) var(--space-6);
  background: var(--background); border-bottom: 1px solid var(--border-strong);
}
.ui-topnav__panel .ui-topnav__link { font-size: var(--text-xl); padding: var(--space-3) 0; border-bottom: 1px solid var(--border); }
.ui-topnav__panel .ui-cta { margin-top: var(--space-5); align-self: flex-start; }
@media (max-width: 900px) {
  .ui-topnav { min-height: 64px; }
  .ui-topnav__links, .ui-topnav__actions { display: none; }
  .ui-topnav__menu { display: block; }
}

/* ---------- Calls to action ---------- */
/* A pill with a dashed ring, an optional icon disc, and a mono label. */
.ui-cta {
  display: inline-flex; align-items: center; gap: 5px; padding: 5px;
  border: 1px dashed var(--border-strong); border-radius: var(--radius-pill);
  text-decoration: none; color: var(--pub-accent, var(--accent));
}
.ui-cta__icon {
  width: 42px; height: 42px; flex: none; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--muted); color: var(--pub-accent, var(--accent));
}
.ui-cta__icon svg { width: 18px; height: 18px; }
.ui-cta__text {
  height: 42px; padding: 0 var(--space-5); border-radius: var(--radius-pill);
  display: flex; align-items: center;
  background: var(--muted); color: var(--pub-accent, var(--accent));
  font-family: var(--font-mono); font-size: var(--text-sm); font-weight: 500;
  letter-spacing: .12em; text-transform: uppercase; white-space: nowrap;
  transition: background var(--motion-fast) cubic-bezier(.2, .7, .3, 1), color var(--motion-fast) cubic-bezier(.2, .7, .3, 1);
}
.ui-cta:hover .ui-cta__text { background: var(--pub-accent, var(--accent)); color: var(--background); }
.ui-cta:focus-visible { outline: 2px solid var(--ring); outline-offset: 3px; }
/* Solid: the one primary action on a surface. */
.ui-cta--solid { border-style: solid; border-color: var(--pub-accent, var(--accent)); background: var(--pub-accent, var(--accent)); }
.ui-cta--solid .ui-cta__text { background: none; color: var(--background); }
.ui-cta--solid:hover .ui-cta__text { background: none; color: var(--background); }
.ui-cta--solid:hover { background: color-mix(in oklab, var(--pub-accent, var(--accent)) 85%, var(--foreground)); }

/* Plain inline link with an arrow. */
.ui-arrowlink { color: var(--pub-accent, var(--accent)); text-decoration: none; font-size: var(--text-base); }
.ui-arrowlink:hover { text-decoration: underline; text-underline-offset: 3px; }

/* ---------- Reveal: headings that focus in ---------- */
.ui-reveal { animation: ui-reveal 1.8s cubic-bezier(.2, .7, .3, 1) both; }
.ui-reveal--2 { animation-delay: .25s; }
.ui-reveal--3 { animation-delay: .5s; }
.ui-reveal--4 { animation-delay: .75s; }
@keyframes ui-reveal { from { filter: blur(16px); opacity: .12; } to { filter: blur(0); opacity: 1; } }
@media (prefers-reduced-motion: reduce) { .ui-reveal { animation: none; } }

/* ---------- Hero ---------- */
.ui-hero {
  position: relative;
  min-height: min(82vh, 780px);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: var(--space-7); text-align: center;
  padding: var(--space-9) clamp(var(--space-4), 3vw, var(--space-7));
}
.ui-hero__title {
  margin: 0; font-family: var(--font-display); font-weight: 400;
  font-size: clamp(3.1rem, 9.2vw, 8.25rem); line-height: .96; letter-spacing: -.015em;
  text-transform: none; color: var(--foreground); text-wrap: balance;
}
.ui-hero__title em { font-style: normal; color: var(--pub-accent, var(--accent)); }
.ui-hero__lede { margin: 0; max-width: 45rem; font-size: clamp(var(--text-lg), 1.5vw, var(--text-xl)); line-height: 1.6; color: var(--muted-foreground); text-wrap: pretty; }
.ui-hero__actions { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-4); }

/* ---------- Sections ---------- */
.ui-section {
  position: relative;
  padding: clamp(var(--space-8), 9vw, 130px) clamp(var(--space-4), 3vw, var(--space-7));
  border-top: 1px solid var(--border-strong);
}
.ui-section__head {
  display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: var(--space-6) var(--space-8); align-items: end;
  margin-bottom: clamp(var(--space-7), 5vw, var(--space-8));
}
.ui-section__head--stack { grid-template-columns: minmax(0, 1fr); max-width: 60rem; }
.ui-section__titles { display: flex; flex-direction: column; gap: var(--space-5); }
.ui-section__eyebrow {
  margin: 0; font-family: var(--font-mono); font-size: var(--text-xs); font-weight: 500;
  letter-spacing: .2em; text-transform: uppercase; color: var(--pub-accent, var(--accent));
}
.ui-section__title {
  margin: 0; font-family: var(--font-display); font-weight: 400;
  font-size: clamp(2.6rem, 6.4vw, 5.75rem); line-height: .98; letter-spacing: -.015em;
  text-transform: none; color: var(--foreground); text-wrap: balance;
}
.ui-section__lede { margin: 0; font-size: clamp(var(--text-lg), 1.3vw, 18px); line-height: 1.6; color: var(--muted-foreground); text-wrap: pretty; }
.ui-section__side { display: flex; flex-direction: column; align-items: flex-start; gap: var(--space-5); }
@media (max-width: 900px) {
  .ui-section__head { grid-template-columns: minmax(0, 1fr); align-items: start; }
}

/* Two columns: a sticky intro beside a list. */
.ui-split { display: grid; grid-template-columns: minmax(0, 24rem) minmax(0, 1fr); gap: clamp(var(--space-6), 5vw, var(--space-8)); align-items: start; }
@media (max-width: 900px) { .ui-split { grid-template-columns: minmax(0, 1fr); } }

/* ---------- Archival plates and photographs ---------- */
.ui-plate { margin: 0; display: flex; flex-direction: column; min-height: 0; background: var(--background); }
.ui-plate__frame { flex: 1; min-height: 0; overflow: hidden; background: var(--background); }
.ui-plate__img { display: block; width: 100%; height: 100%; object-fit: cover; }
/* The plates are cream line on near-black: on a dark page the black drops out. */
:root[data-theme$="dark"] .ui-plate__img, :root[data-theme="polarize"] .ui-plate__img, .dark .ui-plate__img { mix-blend-mode: lighten; }
@media (prefers-color-scheme: dark) { :root:not([data-theme]) .ui-plate__img { mix-blend-mode: lighten; } }
.ui-plate__img--photo { filter: grayscale(1) contrast(1.05) brightness(.9); mix-blend-mode: normal !important; }
.ui-plate__caption { padding: var(--space-3) var(--space-5); border-top: 1px solid var(--border); font-size: var(--text-sm); line-height: 1.45; color: var(--faint-foreground); }
.ui-plate__caption a { color: inherit; }

/* ---------- Process steps ---------- */
.ui-steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-7); }
.ui-steps > li { position: relative; display: flex; }
.ui-steps > li + li::before {
  content: "→"; position: absolute; left: calc(-1 * var(--space-7) / 2); top: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-mono); font-size: var(--text-lg); color: var(--pub-accent, var(--accent));
}
.ui-step {
  flex: 1; display: flex; flex-direction: column; gap: var(--space-5);
  padding: var(--space-6); border: 1px solid var(--border-strong); border-radius: var(--radius-xs);
  color: inherit; text-decoration: none;
  transition: border-color var(--motion-fast) cubic-bezier(.2, .7, .3, 1);
}
a.ui-step:hover { border-color: var(--pub-accent, var(--accent)); }
a.ui-step:focus-visible { outline: 2px solid var(--ring); outline-offset: 3px; }
.ui-step__head { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-4); }
.ui-step__num { font-family: var(--font-display); font-size: 72px; line-height: .8; color: var(--pub-accent, var(--accent)); }
.ui-step__repo { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-3); font-family: var(--font-mono); font-size: 15px; color: var(--foreground); }
.ui-step__title { margin: 0; font-family: var(--font-display); font-weight: 400; font-size: clamp(1.9rem, 2.6vw, 2.4rem); line-height: 1.05; color: var(--foreground); }
.ui-step__body { margin: 0; flex: 1; font-size: 15px; line-height: 1.6; color: var(--muted-foreground); }
.ui-step__files { display: flex; flex-wrap: wrap; gap: 6px; padding-top: var(--space-4); border-top: 1px solid var(--border-strong); }
.ui-step__file { font-family: var(--font-mono); font-size: var(--text-sm); color: var(--foreground); border: 1px solid var(--border-strong); border-radius: 2px; padding: 4px 8px; }
.ui-step__latest { display: flex; flex-direction: column; gap: 6px; padding-top: var(--space-4); border-top: 1px solid var(--border); font-size: 13px; line-height: 1.45; color: var(--foreground); }
.ui-step__foot { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); font-size: var(--text-base); color: var(--pub-accent, var(--accent)); }
@media (max-width: 1100px) {
  .ui-steps { grid-template-columns: minmax(0, 1fr); gap: var(--space-7); }
  .ui-steps > li + li::before { content: "↓"; left: 50%; top: calc(-1 * var(--space-7) / 2); }
}

/* Short promises in a ruled row. */
.ui-promises { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--border-strong); border-bottom: 1px solid var(--border-strong); margin-top: var(--space-7); }
.ui-promise { display: flex; flex-direction: column; gap: var(--space-2); padding: var(--space-5) var(--space-5) var(--space-5) 0; }
.ui-promise + .ui-promise { border-left: 1px solid var(--border-strong); padding-left: var(--space-5); }
.ui-promise__title { margin: 0; font-family: var(--font-mono); font-size: var(--text-xs); font-weight: 500; letter-spacing: .12em; text-transform: uppercase; color: var(--pub-accent, var(--accent)); }
.ui-promise__text { margin: 0; font-size: 15px; line-height: 1.55; color: var(--muted-foreground); }
@media (max-width: 900px) {
  .ui-promises { grid-template-columns: minmax(0, 1fr); }
  .ui-promise + .ui-promise { border-left: 0; border-top: 1px solid var(--border-strong); padding-left: 0; }
}

/* ---------- Project feature ---------- */
.ui-project {
  display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  border: 1px solid var(--border-strong); border-radius: var(--radius-xs); overflow: hidden;
  color: inherit; text-decoration: none;
  transition: border-color var(--motion-fast) cubic-bezier(.2, .7, .3, 1);
}
a.ui-project:hover { border-color: var(--pub-accent, var(--accent)); }
.ui-project + .ui-project { margin-top: var(--space-5); }
.ui-project__body { display: flex; flex-direction: column; gap: var(--space-5); padding: clamp(var(--space-5), 3vw, 40px); }
.ui-project__media { border-left: 1px solid var(--border-strong); min-height: 22rem; }
.ui-project--flip { grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr); }
.ui-project--flip .ui-project__media { order: -1; border-left: 0; border-right: 1px solid var(--border-strong); }
.ui-project__meta { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-3); }
.ui-project__repo { font-family: var(--font-mono); font-size: 15px; color: var(--pub-accent, var(--accent)); }
.ui-project__question { margin: 0; font-family: var(--font-display); font-weight: 400; font-size: clamp(2.2rem, 4vw, 3.5rem); line-height: 1; color: var(--foreground); text-wrap: balance; }
.ui-project__desc { margin: 0; font-size: var(--text-lg); line-height: 1.6; color: var(--muted-foreground); }
.ui-project__finding { display: flex; flex-direction: column; gap: var(--space-3); padding: var(--space-5) 0; border-top: 1px solid var(--border-strong); border-bottom: 1px solid var(--border-strong); }
.ui-project__finding-head { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-3); }
.ui-project__finding-text { margin: 0; font-family: var(--font-display); font-size: clamp(1.4rem, 2vw, 1.75rem); line-height: 1.2; color: var(--foreground); }
.ui-project__changes { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: auto auto minmax(0, 1fr); gap: var(--space-2) var(--space-3); font-size: 13.5px; color: var(--muted-foreground); }
.ui-project__changes li { display: contents; }
.ui-project__date { font-family: var(--font-mono); font-size: var(--text-sm); color: var(--faint-foreground); }
.ui-project__num { font-family: var(--font-mono); font-size: var(--text-sm); color: var(--pub-accent, var(--accent)); }
@media (max-width: 900px) {
  .ui-project, .ui-project--flip { grid-template-columns: minmax(0, 1fr); }
  .ui-project__media, .ui-project--flip .ui-project__media { order: -1; border: 0; border-bottom: 1px solid var(--border-strong); min-height: 15rem; }
}

/* ---------- Repository card ---------- */
.ui-repocards { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr)); gap: var(--space-5); }
.ui-repocard {
  display: flex; flex-direction: column; gap: var(--space-4); padding: var(--space-5) var(--space-6);
  border: 1px solid var(--border-strong); border-radius: var(--radius-xs);
  color: inherit; text-decoration: none;
  transition: border-color var(--motion-fast) cubic-bezier(.2, .7, .3, 1);
}
a.ui-repocard:hover { border-color: var(--pub-accent, var(--accent)); }
.ui-repocard__head { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); }
.ui-repocard__name { font-family: var(--font-mono); font-size: var(--text-base); color: var(--pub-accent, var(--accent)); }
.ui-repocard__pitch { margin: 0; font-family: var(--font-display); font-weight: 400; font-size: 27px; line-height: 1.08; color: var(--foreground); }
.ui-repocard__desc { margin: 0; flex: 1; font-size: var(--text-base); line-height: 1.55; color: var(--muted-foreground); }
.ui-repocard__latest { display: flex; flex-direction: column; gap: 6px; padding-top: var(--space-4); border-top: 1px solid var(--border); font-size: 13px; line-height: 1.45; color: var(--foreground); }

/* ---------- Changelog feed ---------- */
.ui-changes { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--border-strong); }
.ui-change {
  display: grid; grid-template-columns: 5.5rem minmax(0, 14rem) 7rem minmax(0, 1fr) 1.5rem;
  gap: var(--space-4); align-items: baseline;
  padding: var(--space-4) var(--space-2) var(--space-4) 0; border-bottom: 1px solid var(--border-strong);
  color: inherit; text-decoration: none;
  transition: background var(--motion-fast) cubic-bezier(.2, .7, .3, 1);
}
a.ui-change:hover { background: color-mix(in oklab, var(--pub-accent, var(--accent)) 9%, transparent); }
.ui-change__date { font-family: var(--font-mono); font-size: var(--text-sm); color: var(--faint-foreground); }
.ui-change__repo { font-family: var(--font-mono); font-size: 13px; color: var(--foreground); overflow-wrap: anywhere; }
.ui-change__kind { font-family: var(--font-mono); font-size: var(--text-xs); font-weight: 500; letter-spacing: .12em; text-transform: uppercase; color: var(--pub-accent, var(--accent)); }
.ui-change__title { font-size: 15px; line-height: 1.45; color: var(--muted-foreground); }
.ui-change__go { font-family: var(--font-mono); color: var(--pub-accent, var(--accent)); }
@media (max-width: 700px) {
  .ui-change { grid-template-columns: auto auto minmax(0, 1fr); gap: var(--space-2) var(--space-3); }
  .ui-change__title { grid-column: 1 / -1; }
  .ui-change__go { display: none; }
}

/* ---------- Article cards ---------- */
.ui-feature {
  display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  border: 1px solid var(--border-strong); border-radius: var(--radius-xs); overflow: hidden;
  color: inherit; text-decoration: none; margin-bottom: var(--space-5);
  transition: border-color var(--motion-fast) cubic-bezier(.2, .7, .3, 1);
}
a.ui-feature:hover { border-color: var(--pub-accent, var(--accent)); }
.ui-feature__media { border-right: 1px solid var(--border-strong); min-height: 26rem; }
.ui-feature__body { display: flex; flex-direction: column; gap: var(--space-5); padding: clamp(var(--space-5), 3vw, 44px) clamp(var(--space-5), 3vw, 40px); }
.ui-feature__title { margin: 0; font-family: var(--font-display); font-weight: 400; font-size: clamp(2rem, 3.8vw, 3.4rem); line-height: 1.02; color: var(--foreground); text-wrap: balance; }
.ui-feature__summary { margin: 0; font-size: var(--text-lg); line-height: 1.6; color: var(--muted-foreground); }
.ui-feature__foot { margin-top: auto; display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); padding-top: var(--space-4); border-top: 1px solid var(--border-strong); font-size: var(--text-base); color: var(--pub-accent, var(--accent)); }
.ui-feature__from { font-family: var(--font-mono); font-size: 13px; color: var(--faint-foreground); }
@media (max-width: 900px) {
  .ui-feature { grid-template-columns: minmax(0, 1fr); }
  .ui-feature__media { border-right: 0; border-bottom: 1px solid var(--border-strong); min-height: 15rem; }
}

.ui-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-5); }
@media (max-width: 1100px) { .ui-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 700px) { .ui-cards { grid-template-columns: minmax(0, 1fr); } }
.ui-articlecard {
  display: flex; flex-direction: column;
  border: 1px solid var(--border-strong); border-radius: var(--radius-xs); overflow: hidden;
  color: inherit; text-decoration: none;
  transition: border-color var(--motion-fast) cubic-bezier(.2, .7, .3, 1);
}
a.ui-articlecard:hover { border-color: var(--pub-accent, var(--accent)); }
.ui-articlecard__media { height: 15rem; border-bottom: 1px solid var(--border-strong); }
.ui-articlecard__pull {
  height: 15rem; box-sizing: border-box; display: flex; align-items: flex-end;
  padding: var(--space-6); border-bottom: 1px dashed var(--border-strong);
  margin: 0; font-family: var(--font-display); font-size: 25px; line-height: 1.25; color: var(--foreground);
}
.ui-articlecard__body { flex: 1; display: flex; flex-direction: column; gap: var(--space-4); padding: var(--space-5) var(--space-6) var(--space-6); }
.ui-articlecard__title { margin: 0; font-family: var(--font-display); font-weight: 400; font-size: 32px; line-height: 1.06; color: var(--foreground); }
.ui-articlecard__desc { margin: 0; flex: 1; font-size: var(--text-base); line-height: 1.55; color: var(--muted-foreground); }
.ui-articlecard__credit { font-size: var(--text-sm); color: var(--faint-foreground); }

/* A row of meta: tier badge + mono label. */
.ui-metaline { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-3); }
.ui-metaline__text { font-family: var(--font-mono); font-size: var(--text-xs); font-weight: 500; letter-spacing: .12em; text-transform: uppercase; color: var(--faint-foreground); }

/* ---------- Story cards: speculations, told like posts ---------- */
.ui-storyrow { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: var(--space-6); align-items: end; }
.ui-storyrow__intro { display: flex; flex-direction: column; justify-content: space-between; gap: var(--space-6); align-self: stretch; }
.ui-storyrow__lede { margin: 0; font-family: var(--font-display); font-size: clamp(1.3rem, 1.8vw, 1.6rem); line-height: 1.45; color: var(--muted-foreground); }
.ui-stories {
  display: grid; grid-auto-flow: column; grid-auto-columns: min(27.5rem, 82vw); gap: var(--space-5);
  overflow-x: auto; scroll-snap-type: x mandatory; overscroll-behavior-x: contain;
  list-style: none; margin: 0; padding: 0 0 var(--space-2);
}
.ui-stories > li { scroll-snap-align: start; display: flex; }
/* A wrapping grid, for an index page of every story. */
.ui-stories--grid { grid-auto-flow: row; grid-auto-columns: auto; grid-template-columns: repeat(auto-fill, minmax(min(100%, 20rem), 1fr)); overflow: visible; }
.ui-story {
  position: relative; flex: 1; display: flex; flex-direction: column; aspect-ratio: 3 / 4;
  border: 1px solid var(--border-strong); border-radius: var(--radius-xs); overflow: hidden;
  color: inherit; text-decoration: none;
  transition: border-color var(--motion-fast) cubic-bezier(.2, .7, .3, 1);
}
a.ui-story:hover { border-color: var(--pub-accent, var(--accent)); }
.ui-story__bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .75; }
.ui-story::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 72%; background: linear-gradient(to top, var(--background) 52%, transparent); pointer-events: none; }
.ui-story__head { position: relative; z-index: 1; display: flex; align-items: center; gap: 10px; padding: var(--space-4) var(--space-5); }
.ui-story__avatar { width: 28px; height: 28px; flex: none; border-radius: 50%; border: 1px solid var(--border-strong); background: var(--background); display: flex; align-items: center; justify-content: center; }
.ui-story__avatar::before { content: ""; width: 6px; height: 11px; border-radius: 1px; background: var(--pub-accent, var(--accent)); }
.ui-story__who { display: flex; flex-direction: column; gap: 1px; flex: 1; min-width: 0; font-size: 13.5px; color: var(--foreground); }
.ui-story__when { font-size: var(--text-sm); color: var(--faint-foreground); }
.ui-story__body { position: relative; z-index: 1; margin-top: auto; display: flex; flex-direction: column; gap: var(--space-4); padding: var(--space-6); }
.ui-story__title { margin: 0; font-family: var(--font-display); font-weight: 400; font-size: clamp(1.9rem, 2.6vw, 2.4rem); line-height: 1.05; color: var(--foreground); }
.ui-story__excerpt { margin: 0; font-family: var(--font-display); font-size: var(--text-xl); line-height: 1.45; color: var(--muted-foreground); }
.ui-story__foot { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); padding-top: var(--space-4); border-top: 1px solid var(--border-strong); font-size: var(--text-base); color: var(--pub-accent, var(--accent)); }
.ui-story__time { font-size: var(--text-sm); color: var(--faint-foreground); }
@media (max-width: 1100px) {
  .ui-storyrow { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- Principle: one sentence, set large ---------- */
.ui-principle { display: flex; flex-direction: column; align-items: center; gap: var(--space-6); text-align: center; }
.ui-principle__text { margin: 0; max-width: 20ch; font-family: var(--font-display); font-weight: 400; font-size: clamp(2.8rem, 7.5vw, 6.75rem); line-height: .98; letter-spacing: -.015em; color: var(--foreground); text-wrap: balance; }
.ui-principle__text em { font-style: normal; color: var(--pub-accent, var(--accent)); }
.ui-principle__note { margin: 0; max-width: 39rem; font-size: clamp(var(--text-lg), 1.3vw, 18px); line-height: 1.6; color: var(--muted-foreground); }
.ui-tierlegend { width: 100%; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); border: 1px solid var(--border-strong); border-radius: var(--radius-xs); margin-top: var(--space-5); text-align: left; }
.ui-tierlegend__item { display: flex; flex-direction: column; align-items: flex-start; gap: var(--space-3); padding: var(--space-5); }
.ui-tierlegend__item + .ui-tierlegend__item { border-left: 1px solid var(--border-strong); }
.ui-tierlegend__text { margin: 0; font-size: var(--text-base); line-height: 1.5; color: var(--muted-foreground); }
@media (max-width: 900px) {
  .ui-tierlegend { grid-template-columns: minmax(0, 1fr); }
  .ui-tierlegend__item + .ui-tierlegend__item { border-left: 0; border-top: 1px solid var(--border-strong); }
}

/* ---------- Site footer ---------- */
.ui-sitefooter { display: flex; flex-direction: column; gap: clamp(var(--space-7), 5vw, var(--space-8)); padding: clamp(var(--space-8), 8vw, 110px) clamp(var(--space-4), 3vw, var(--space-7)) var(--space-6); border-top: 1px solid var(--border-strong); overflow: hidden; }
.ui-sitefooter__cta { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: var(--space-6); align-items: end; }
.ui-sitefooter__title { margin: 0; font-family: var(--font-display); font-weight: 400; font-size: clamp(2.6rem, 6.4vw, 5.75rem); line-height: .98; letter-spacing: -.015em; color: var(--foreground); max-width: 14ch; }
.ui-sitefooter__lede { margin: var(--space-4) 0 0; max-width: 32rem; font-size: var(--text-lg); line-height: 1.6; color: var(--muted-foreground); }
.ui-sitefooter__actions { display: flex; flex-direction: column; align-items: flex-end; gap: var(--space-3); }
.ui-sitefooter__nav { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-4) var(--space-6); padding: var(--space-5) 0; border-top: 1px solid var(--border-strong); border-bottom: 1px solid var(--border-strong); }
.ui-sitefooter__links { display: flex; flex-wrap: wrap; gap: var(--space-3) var(--space-6); }
.ui-sitefooter__link { font-family: var(--font-mono); font-size: var(--text-sm); font-weight: 500; letter-spacing: .12em; text-transform: uppercase; color: var(--muted-foreground); text-decoration: none; }
.ui-sitefooter__link:hover { color: var(--foreground); }
.ui-sitefooter__word { font-family: var(--font-mono); font-weight: 400; font-size: clamp(3.4rem, 14.8vw, 13.4rem); line-height: .8; letter-spacing: .12em; text-transform: uppercase; color: var(--foreground); white-space: nowrap; margin-left: -.04em; }
.ui-sitefooter__fine { display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--space-3); }
@media (max-width: 900px) {
  .ui-sitefooter__cta { grid-template-columns: minmax(0, 1fr); }
  .ui-sitefooter__actions { align-items: flex-start; }
}

/* ---------- Cell field host ---------- */
/* <ui-cellfield> / <CellField> fills its nearest positioned ancestor, behind
   everything else in it. */
.ui-cellfield { position: absolute; inset: 0; display: block; pointer-events: none; z-index: 0; overflow: hidden; color: var(--foreground); }
.ui-cellfield > canvas { display: block; width: 100%; height: 100%; }
.ui-cellfield-host { position: relative; isolation: isolate; }
.ui-cellfield-host > :not(.ui-cellfield) { position: relative; z-index: 1; }