/* MicronanoHub original concept: Connected Form.
 * Independent geometric composition; native Canvas2D; existing typography and business content.
 * One visual story: pattern -> separated layers -> connected structure. Preview only.
 */
:root {
  --formation-paper: oklch(97.6% .005 250);
  --formation-ink: oklch(25% .028 255);
  --formation-muted: oklch(47% .025 255);
  --formation-line: oklch(83% .014 255);
  --formation-faint: oklch(91% .01 255);
  --formation-blue: oklch(48% .18 265);
  --formation-blue-light: oklch(70% .12 265);
  --formation-blue-dark: oklch(32% .12 265);
  --formation-white: oklch(99% .002 255);
  --formation-silver: oklch(89% .012 255);
  --formation-steel: oklch(67% .025 255);
  --formation-edge: oklch(46% .028 255);
  --formation-dark: oklch(29% .025 255);
}
.hub-home-formation .professional-main { padding-top: 76px; }
.formation-hero { position: relative; background: var(--formation-paper); color: var(--formation-ink); overflow: clip; }
.formation-inner { position: relative; padding-top: 26px; }
.formation-topline { display: flex; align-items: center; justify-content: space-between; gap: 20px; font-size: 12px; color: var(--formation-muted); }
.formation-topline p { margin: 0; }
.formation-preview { font-size: 11px; border: 1px solid var(--formation-line); padding: 4px 8px; border-radius: 4px; white-space: nowrap; }
.formation-intro { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); align-items: center; gap: 48px; margin-top: 26px; position: relative; z-index: 2; }
.formation-title { font-family: var(--font-display); font-weight: 600; font-size: clamp(48px, 5.7vw, 80px); line-height: 1.22; letter-spacing: -.06em; margin: 0; overflow-wrap: anywhere; min-width: 0; }
.formation-title-second { display: inline-block; margin-left: 1.03em; color: var(--formation-blue); }
.formation-summary { justify-self: end; max-width: 400px; }
.formation-summary > p { font-size: 15px; line-height: 1.9; margin: 0; color: var(--formation-muted); }
.hub-home-formation .hero-actions { margin-top: 26px; display: flex; gap: 26px; align-items: center; flex-wrap: wrap; }
.hub-home-formation .primary-action { min-height: 48px; font-size: 14px; padding: 12px 20px; display: inline-flex; gap: 14px; align-items: center; white-space: nowrap; }
.formation-text-link { font-size: 13px; display: inline-flex; gap: 8px; align-items: center; min-height: 44px; white-space: nowrap; color: var(--formation-ink); text-decoration: none; }
.formation-text-link:hover { color: var(--formation-blue); }
.formation-stage { position: relative; height: 340px; margin: -12px -36px 0; }
.formation-canvas, .formation-fallback { display: block; position: absolute; inset: 0; width: 100%; height: 100%; }
.formation-canvas { opacity: 0; }
[data-renderer="ready"] .formation-canvas { opacity: 1; }
[data-renderer="ready"] .formation-fallback { display: none; }
.fallback-base { fill: var(--formation-silver); stroke: var(--formation-edge); }
.fallback-pattern { fill: var(--formation-blue); }
.formation-callout { position: absolute; color: var(--formation-muted); font-size: 12px; line-height: 1.6; padding-left: 18px; pointer-events: none; }
.formation-dot { position: absolute; left: 0; top: 6px; width: 5px; height: 5px; background: var(--formation-blue); }
.formation-callout small { display: block; font-family: var(--font-outlier); font-size: 9px; letter-spacing: .12em; color: var(--formation-muted); margin-top: 3px; }
.formation-callout-layout { left: 7%; top: 34%; }
.formation-callout-form { right: 7%; bottom: 15%; }
.formation-stage-signature { position: absolute; left: 36px; bottom: 16px; font: 10px var(--font-outlier); letter-spacing: .12em; color: var(--formation-muted); }
.formation-controls-row { position: relative; display: flex; justify-content: space-between; align-items: center; gap: 20px; border-bottom: 1px solid var(--formation-line); }
.formation-controls-row::after, .formation-notes::after { content: ''; position: absolute; left: 50%; top: 0; bottom: -1px; width: 1px; background: var(--formation-blue); pointer-events: none; }
.formation-views { display: flex; gap: 12px; }
.formation-views button { appearance: none; position: relative; background: none; border: 0; color: var(--formation-muted); padding: 12px 24px; min-height: 48px; font: 14px var(--font-body); cursor: pointer; white-space: nowrap; }
.formation-views button::after { content: ''; position: absolute; bottom: -1px; height: 2px; left: 24px; right: 24px; background: var(--formation-blue); transform: scaleX(0); transition: transform 220ms var(--ease-out); }
.formation-views button[aria-pressed="true"] { color: var(--formation-blue); font-weight: 600; }
.formation-views button[aria-pressed="true"]::after { transform: scaleX(1); }
.formation-playback { display: flex; gap: 16px; }
.formation-playback button { display: inline-flex; align-items: center; gap: 6px; background: none; color: var(--formation-muted); border: 0; font: 12px var(--font-body); padding: 10px 8px; min-height: 44px; cursor: pointer; white-space: nowrap; }
.formation-playback button:hover, .formation-views button:hover { color: var(--formation-blue); }
.formation-pause-icon { width: 12px; text-align: center; }
.formation-hero button:focus-visible, .formation-hero a:focus-visible { outline: 3px solid var(--formation-blue); outline-offset: 4px; }
.formation-hero button:active { transform: translateY(1px); }
.formation-notes { position: relative; display: flex; justify-content: space-between; gap: 20px; padding-top: 14px; }
.formation-caption { font-size: 12px; color: var(--formation-ink); margin: 0; line-height: 1.7; }
.formation-disclaimer { color: var(--formation-muted); font-size: 11px; line-height: 1.7; margin: 0; text-align: right; }
.formation-connector { position: relative; margin-left: 50%; padding: 24px 0 20px 20px; display: flex; justify-content: space-between; gap: 12px; max-width: 330px; border-left: 1px solid var(--formation-blue); color: var(--formation-blue); font-size: 12px; text-decoration: none; }
.formation-connector::before { content: ''; position: absolute; width: 6px; height: 6px; background: var(--formation-blue); left: -3.5px; top: 22px; }
.hub-home-formation .professional-directory-band { background: var(--formation-white); border-bottom: 1px solid var(--formation-faint); padding: 28px 0; scroll-margin-top: 80px; }
.hub-home-formation .professional-directory { display: grid; grid-template-columns: 160px minmax(0, 1fr); gap: 38px; border: 0; background: none; padding: 0; }
.hub-home-formation .professional-directory-head { padding: 0; border: 0; display: flex; flex-direction: column; justify-content: center; align-items: flex-start; gap: 6px; }
.hub-home-formation .professional-directory-head h2 { font-size: 19px; }
.hub-home-formation .professional-process-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px 20px; }
.hub-home-formation .professional-process-grid > a { border: 0; border-top: 1px solid var(--formation-line); min-height: 68px; padding: 12px 0 4px; background: none; }
.hub-home-formation .professional-process-grid strong { font-size: 13px; }
.hub-home-formation .professional-process-grid > a > span { font-size: 10px; }
.hub-home-formation.lang-en .formation-title { font-size: clamp(44px, 5.2vw, 72px); letter-spacing: -.05em; }
.hub-home-formation.lang-en .formation-title-second { margin-left: .55em; }
[data-renderer="fallback"] .formation-playback, [data-renderer="fallback"] .formation-views { display: none; }
@media (max-width: 1000px) {
  .formation-intro { gap: 28px; }
  .formation-summary > p { font-size: 14px; }
  .hub-home-formation .hero-actions { gap: 12px; }
  .formation-stage { height: 320px; }
  .formation-callout-layout { left: 5%; }
  .formation-callout-form { right: 5%; }
  .hub-home-formation .professional-directory { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .hub-home-formation .professional-directory-head { flex-direction: row; align-items: center; justify-content: space-between; }
}
@media (max-width: 767px) {
  .hub-home-formation .professional-main { padding-top: 68px; }
  .formation-inner { padding-top: 20px; }
  .formation-topline { font-size: 11px; gap: 8px; }
  .formation-preview { font-size: 9px; padding: 3px 5px; }
  .formation-intro { grid-template-columns: minmax(0, 1fr); gap: 18px; margin-top: 24px; }
  .formation-title { font-size: clamp(40px, 11vw, 62px); line-height: 1.16; }
  .hub-home-formation.lang-en .formation-title { font-size: clamp(38px, 10vw, 58px); }
  .formation-summary { justify-self: start; max-width: 100%; }
  .formation-summary > p { font-size: 14px; line-height: 1.8; }
  .hub-home-formation .hero-actions { margin-top: 16px; gap: 20px; }
  .hub-home-formation .primary-action { min-height: 44px; padding: 10px 15px; font-size: 12px; }
  .formation-text-link { font-size: 12px; }
  .formation-stage { height: 255px; margin: 0 -18px; }
  .formation-callout { font-size: 10px; padding-left: 12px; }
  .formation-callout small { font-size: 8px; }
  .formation-callout-layout { left: 5%; top: 13%; }
  .formation-callout-form { right: 5%; bottom: 9%; }
  .formation-stage-signature { display: none; }
  .formation-controls-row { gap: 4px; align-items: stretch; }
  .formation-controls-row::after, .formation-notes::after { display: none; }
  .formation-views { gap: 0; flex: 1; }
  .formation-views button { padding: 12px 9px; font-size: 12px; min-height: 44px; flex: 1; }
  .formation-views button::after { left: 9px; right: 9px; }
  .formation-playback { gap: 2px; }
  .formation-playback button { font-size: 10px; gap: 4px; padding: 10px 4px; }
  .formation-replay > span:first-child { font-size: 16px; }
  .formation-replay > .cn, .formation-replay > .en { display: none !important; }
  .formation-replay { min-width: 44px; justify-content: center; }
  .formation-notes { display: block; padding-top: 12px; }
  .formation-caption { font-size: 12px; min-height: 21px; }
  .formation-disclaimer { text-align: left; font-size: 10px; margin-top: 5px; }
  .formation-connector { margin-left: 16px; max-width: 240px; padding-block: 20px 18px; font-size: 11px; }
  .hub-home-formation .professional-process-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 20px; }
  .hub-home-formation .professional-directory-band { padding-block: 24px; }
}
@media (prefers-reduced-motion: reduce) {
  .formation-views button::after { transition: none; }
}

/* Revision 2 — gallery hierarchy: one title, one invitation, one moving object. */
.formation-gallery { --formation-paper: oklch(97.8% .003 255); }
.formation-gallery .formation-inner { min-height: calc(100svh - 76px); padding-top: 56px; padding-bottom: 24px; display: flex; flex-direction: column; }
.formation-gallery .formation-intro { margin-top: 0; align-items: end; gap: 48px; }
.formation-gallery .formation-title { font-size: clamp(48px,5.2vw,74px); font-weight: 500; line-height: 1.18; letter-spacing: -.055em; }
.formation-gallery .formation-title-second { color: var(--formation-ink); margin-left: 1.05em; }
.formation-gallery .formation-summary { margin-bottom: 12px; }
.hub-home-formation .formation-gallery .primary-action { color: var(--formation-ink); background: none; border: 0; border-radius: 0; padding: 0 0 8px; border-bottom: 1px solid var(--formation-line); gap: 36px; font-weight: 400; font-size: 14px; }
.formation-gallery .primary-action > span:last-child { color: var(--formation-blue); font-size: 20px; }
.hub-home-formation .formation-gallery .primary-action:hover { color: var(--formation-blue); transform: none; }
.formation-gallery .formation-stage { flex: 1; min-height: 390px; height: auto; max-height: 540px; margin: 8px -36px 0; }
.formation-quietbar { position: relative; display: flex; justify-content: space-between; align-items: center; gap: 24px; margin-top: auto; padding-top: 16px; }
.formation-concept { color: var(--formation-muted); font-size: 11px; letter-spacing: .04em; }
.formation-explore summary { display: flex; align-items: center; gap: 32px; list-style: none; min-height: 44px; padding: 8px 0; font-size: 12px; color: var(--formation-ink); cursor: pointer; }
.formation-explore summary::-webkit-details-marker { display: none; }
.formation-plus { font-size: 20px; font-weight: 300; line-height: 1; }
.formation-explore[open] .formation-plus { transform: rotate(45deg); }
.formation-explore-panel { position: absolute; z-index: 5; left: 0; bottom: calc(100% + 8px); width: min(620px,100%); padding: 20px 24px; border: 1px solid var(--formation-line); background: var(--formation-white); box-shadow: 0 12px 32px color-mix(in oklab,var(--formation-dark) 8%,transparent); }
.formation-gallery .formation-controls-row { border-color: var(--formation-faint); }
.formation-gallery .formation-controls-row::after,.formation-gallery .formation-notes::after { display: none; }
.formation-gallery .formation-notes { display: block; }
.formation-gallery .formation-disclaimer { margin-top: 5px; text-align: left; }
.formation-gallery .formation-views { gap: 8px; }
.formation-gallery .formation-views button { padding-inline: 16px; }
.formation-gallery .formation-views button::after { left: 16px; right: 16px; }
.formation-quiet-actions { display: flex; align-items: center; gap: 16px; }
.formation-gallery .formation-pause,.formation-down { display: inline-flex; align-items: center; justify-content: center; height: 44px; width: 44px; padding: 0; border: 1px solid var(--formation-line); background: transparent; border-radius: 50%; color: var(--formation-ink); cursor: pointer; text-decoration: none; font: 16px var(--font-body); }
.formation-down { border-color: transparent; }
.formation-gallery .formation-pause .cn,.formation-gallery .formation-pause .en { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.formation-gallery summary:focus-visible { outline: 3px solid var(--formation-blue); outline-offset: 5px; }
.formation-gallery .formation-pause:disabled { opacity: .45; cursor: default; }
.formation-gallery[data-renderer="fallback"] .formation-pause { display: none; }
.hub-home-formation .professional-directory-band { padding-top: 48px; }
@media (max-width: 1000px) and (min-width: 768px) {
  .formation-gallery .formation-inner { padding-top: 44px; }
  .formation-gallery .formation-stage { min-height: 340px; }
}
@media (max-width: 767px) {
  .formation-gallery .formation-inner { min-height: calc(100svh - 68px); padding-top: 40px; padding-bottom: 20px; }
  .formation-gallery .formation-intro { gap: 24px; }
  .formation-gallery .formation-title { font-size: clamp(42px,11.5vw,62px); line-height: 1.2; }
  .hub-home-formation.lang-en .formation-gallery .formation-title { font-size: clamp(40px,10.8vw,58px); }
  .formation-gallery .formation-summary { margin-bottom: 0; }
  .hub-home-formation .formation-gallery .primary-action { font-size: 13px; min-height: 44px; gap: 30px; padding-bottom: 4px; }
  .formation-gallery .formation-stage { margin: 4px -18px 0; min-height: 270px; max-height: 400px; }
  .formation-quietbar { gap: 8px; flex-wrap: wrap; padding-top: 8px; }
  .formation-concept { order: -1; flex-basis: 100%; font-size: 10px; margin-bottom: 8px; }
  .formation-explore summary { gap: 24px; }
  .formation-quiet-actions { gap: 4px; }
  .formation-explore-panel { bottom: calc(100% + 8px); padding: 12px 14px; }
  .formation-gallery .formation-controls-row { display: grid; grid-template-columns: minmax(0,1fr); gap: 0; }
  .formation-gallery .formation-views { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 0; }
  .formation-gallery .formation-playback { justify-content: flex-end; }
  .formation-gallery .formation-views button { padding-inline: 8px; }
  .formation-gallery .formation-views button::after { left: 8px; right: 8px; }
  .formation-gallery .formation-caption { font-size: 11px; }
  .formation-gallery .formation-disclaimer { font-size: 10px; }
  .hub-home-formation .professional-directory-band { padding-top: 36px; }
}

/* Revision 3 — fewer words across the entire homepage, not just the hero. */
.formation-gallery .formation-title { font-size: clamp(38px,4.8vw,66px); line-height: 1.25; letter-spacing: -.04em; }
.formation-gallery .formation-intro { grid-template-columns: minmax(0,1fr) auto; align-items: center; }
.formation-gallery .formation-summary { margin-bottom: 0; }
.formation-gallery .formation-stage { max-height: 580px; }
.hub-home-formation.lang-en .formation-gallery .formation-title { font-size: clamp(36px,4.5vw,62px); }
.minimal-section { padding-block: 76px; color: var(--formation-ink); }
#process-directory { scroll-margin-top: 76px; }
.minimal-heading { display: flex; justify-content: space-between; align-items: center; gap: 24px; margin-bottom: 32px; }
.minimal-heading h2 { font-size: clamp(25px,2.6vw,36px); font-weight: 500; line-height: 1.4; letter-spacing: -.035em; margin: 0; }
.minimal-heading > a { display: inline-flex; align-items: center; min-height: 44px; flex-shrink: 0; font-size: 12px; color: var(--formation-muted); text-decoration: none; }
.minimal-processes { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 0 32px; }
.minimal-processes > a { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 78px; border-top: 1px solid var(--formation-line); color: var(--formation-ink); font-size: 15px; line-height: 1.5; text-decoration: none; }
.minimal-processes > a > span:last-child { font-size: 13px; color: var(--formation-muted); }
.minimal-platform { border-top: 1px solid var(--formation-faint); }
.minimal-platform .minimal-heading { margin-bottom: 12px; }
.minimal-position { color: var(--formation-muted); font-size: 14px; line-height: 1.9; margin: 0 0 30px; }
.minimal-routes { display: flex; gap: 20px 42px; flex-wrap: wrap; }
.minimal-routes > a { display: inline-flex; gap: 20px; align-items: center; min-height: 44px; font-size: 14px; color: var(--formation-ink); text-decoration: none; }
.minimal-routes > a > span:last-child { color: var(--formation-muted); font-size: 12px; }
.minimal-library { padding-top: 0; padding-bottom: 40px; }
.minimal-disclosure { border-top: 1px solid var(--formation-line); }
.minimal-disclosure:last-child { border-bottom: 1px solid var(--formation-line); }
.minimal-disclosure > summary { list-style: none; display: flex; align-items: center; justify-content: space-between; min-height: 80px; gap: 20px; cursor: pointer; font-size: 20px; color: var(--formation-ink); }
.minimal-disclosure > summary::-webkit-details-marker { display: none; }
.minimal-plus { font-size: 26px; font-weight: 300; }
.minimal-disclosure[open] > summary .minimal-plus { transform: rotate(45deg); }
.minimal-resource-links { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 4px 24px; padding-bottom: 28px; }
.minimal-resource-links a { color: var(--formation-muted); text-decoration: none; display: flex; align-items: center; min-height: 44px; font-size: 14px; line-height: 1.6; }
.minimal-channel-links { display: flex; align-items: start; gap: 48px; padding-bottom: 28px; font-size: 14px; color: var(--formation-muted); }
.minimal-channel-links p { margin: 0 0 8px; }
.minimal-channel-links > a { color: var(--formation-ink); min-height: 44px; display: inline-flex; align-items: center; text-decoration: none; }
.minimal-channel-links button { background: transparent; border: 0; color: var(--formation-blue); padding: 8px 12px; font: inherit; min-height: 44px; cursor: pointer; }
.minimal-contact { padding-block: 64px 80px; }
.minimal-contact-line { display: flex; flex-wrap: wrap; gap: 16px 32px; align-items: center; font-size: 14px; color: var(--formation-muted); }
.minimal-contact-line > a { display: inline-flex; align-items: center; min-height: 44px; color: var(--formation-ink); text-decoration: none; overflow-wrap: anywhere; }
.minimal-privacy { margin: 18px 0 0; font-size: 11px; color: var(--formation-muted); line-height: 1.7; }
.hub-home-formation .professional-footer { padding-block: 32px; }
.hub-home-formation .professional-footer p { font-size: 11px; line-height: 1.8; max-width: 760px; }
.minimal-section a:hover,.minimal-library a:hover { color: var(--formation-blue); }
.minimal-section a:focus-visible,.minimal-library a:focus-visible,.minimal-library summary:focus-visible,.minimal-library button:focus-visible { outline: 3px solid var(--formation-blue); outline-offset: 4px; }
@media (max-width: 1000px) {
  .minimal-processes { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .minimal-resource-links { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 767px) {
  .formation-gallery .formation-intro { grid-template-columns: minmax(0,1fr); gap: 20px; }
  .formation-gallery .formation-title { font-size: clamp(32px,8.5vw,48px); white-space: nowrap; }
  .hub-home-formation.lang-en .formation-gallery .formation-title { font-size: clamp(28px,6.7vw,42px); white-space: normal; }
  .formation-gallery .formation-stage { min-height: 240px; max-height: 450px; }
  .formation-concept { order: 0; flex-basis: auto; margin: 0 auto 0 16px; font-size: 10px; }
  .formation-quietbar { flex-wrap: nowrap; gap: 0; }
  .formation-explore summary { gap: 12px; }
  .formation-quiet-actions { gap: 0; }
  .minimal-section { padding-block: 44px; }
  .minimal-heading { gap: 20px; align-items: start; margin-bottom: 24px; }
  .minimal-heading h2 { font-size: 25px; }
  .minimal-heading > a { min-height: 36px; font-size: 11px; }
  .minimal-processes { gap: 0 24px; }
  .minimal-processes > a { min-height: 66px; font-size: 14px; gap: 8px; }
  .minimal-position { font-size: 13px; margin-bottom: 18px; max-width: 29em; }
  .minimal-routes { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 8px 24px; }
  .minimal-routes > a { justify-content: space-between; font-size: 13px; gap: 8px; }
  .minimal-library { padding-bottom: 0; }
  .minimal-disclosure > summary { font-size: 18px; min-height: 70px; }
  .minimal-resource-links { gap: 2px 24px; }
  .minimal-resource-links a { font-size: 12px; }
  .minimal-channel-links { flex-direction: column; gap: 16px; font-size: 12px; }
  .minimal-contact { padding-block: 48px; }
  .minimal-contact .minimal-heading { margin-bottom: 20px; }
  .minimal-contact-line { align-items: start; flex-direction: column; gap: 0; font-size: 13px; }
  .minimal-contact-line > .cn,.minimal-contact-line > .en { margin-bottom: 4px; }
  .minimal-privacy { margin-top: 12px; }
}

/* Revision 4 — no headline overlay; the structure is the visual subject. */
.formation-webgl { position: absolute; inset: 0; width: 100%; height: 100%; display: block; opacity: 0; transition: opacity 650ms ease; pointer-events: none; }
[data-renderer="ready"][data-render-mode="webgl"] .formation-webgl { opacity: 1; }
[data-render-mode="webgl"] .formation-canvas { opacity: 0; }
@media (prefers-reduced-motion: reduce) { .formation-webgl { transition: none; } }
.formation-accessible-title { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.formation-gallery .formation-inner { padding-top: 32px; }
.formation-gallery .formation-intro { display: flex; justify-content: flex-end; }
.formation-gallery .formation-stage { max-height: none; }
@media (max-width: 767px) {
  .formation-gallery .formation-inner { padding-top: 24px; }
  .formation-gallery .formation-stage { max-height: none; }
}

/* R6: a quiet process selector; the specimen carries the explanation. */
.formation-process-ui { position: relative; z-index: 2; max-width: 620px; width: 100%; margin: 0 auto 10px; }
.formation-process-tabs { display: grid; grid-template-columns: repeat(5,minmax(0,1fr)); border-bottom: 1px solid var(--formation-line); }
.formation-process-tabs button { position: relative; border: 0; background: transparent; color: var(--formation-muted); font: 13px var(--font-body); min-height: 44px; padding: 8px 6px; cursor: pointer; }
.formation-process-tabs button::after { content: ''; position: absolute; bottom: -1px; left: 25%; right: 25%; height: 2px; background: var(--formation-blue); transform: scaleX(0); transition: transform 220ms ease; }
.formation-process-tabs button[aria-pressed="true"] { color: var(--formation-ink); }
.formation-process-tabs button[aria-pressed="true"]::after { transform: scaleX(1); }
.formation-timeline { display: flex; align-items: center; gap: 24px; min-height: 42px; }
.formation-phase { font: 11px var(--font-body); color: var(--formation-muted); margin: 0; min-width: 180px; }
.formation-scrub { --process-progress: 0%; appearance: none; height: 28px; background: transparent; min-width: 0; flex: 1; cursor: ew-resize; margin: 0; }
.formation-scrub::-webkit-slider-runnable-track { height: 2px; background: linear-gradient(to right,var(--formation-blue) var(--process-progress),var(--formation-line) var(--process-progress)); }
.formation-scrub::-webkit-slider-thumb { appearance: none; width: 8px; height: 8px; border-radius: 50%; background: var(--formation-blue); margin-top: -3px; }
.formation-scrub::-moz-range-track { height: 2px; background: var(--formation-line); }
.formation-scrub::-moz-range-progress { height: 2px; background: var(--formation-blue); }
.formation-scrub::-moz-range-thumb { border: 0; width: 8px; height: 8px; border-radius: 50%; background: var(--formation-blue); }
.formation-scrub:focus-visible { outline: 2px solid var(--formation-blue); outline-offset: 4px; }
[data-process="structure"] .formation-timeline { visibility: hidden; }
[data-renderer="fallback"] .formation-process-ui { display: none; }
.formation-gallery .formation-stage { min-height: 220px; }
@media (max-width: 767px) {
  .formation-process-ui { margin-bottom: 4px; }
  .formation-process-tabs button { font-size: 12px; }
  .formation-timeline { gap: 16px; }
  .formation-phase { font-size: 10px; min-width: 138px; }
  .formation-gallery .formation-inner { padding-top: 12px; }
  .formation-gallery .formation-intro { margin-top: 12px; }
}
@media (prefers-reduced-motion: reduce) { .formation-process-tabs button::after { transition: none; } }

/* R7 — a live process notebook beside the specimen, never a headline overlay. */
.formation-theater { display: grid; grid-template-columns: 248px minmax(0,1fr); gap: 32px; flex: 1; min-height: 380px; }
.formation-gallery .formation-theater .formation-stage { margin: 0 -24px 0 0; min-height: 380px; max-height: none; }
.formation-guide { align-self: center; position: relative; z-index: 3; padding-block: 24px; }
.formation-guide-eyebrow { display: flex; justify-content: space-between; gap: 12px; color: var(--formation-muted); font: 10px var(--font-body); letter-spacing: .1em; margin-bottom: 22px; }
.formation-guide-count { font-variant-numeric: tabular-nums; letter-spacing: .08em; }
.formation-guide-title { font: 500 27px/1.4 var(--font-body); color: var(--formation-ink); letter-spacing: -.035em; margin: 0 0 14px; min-height: 38px; }
@media (min-width: 901px) {
  .lang-en .formation-guide-title { min-height: 2.8em; }
  .lang-en .formation-guide-copy { min-height: 100px; }
}
.formation-guide-copy { color: var(--formation-muted); font: 13px/1.9 var(--font-body); margin: 0; min-height: 76px; text-wrap: pretty; }
.formation-guide-steps { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 4px; margin-block: 22px 17px; }
.formation-guide-steps button { appearance: none; background: transparent; border: 0; border-top: 1px solid var(--formation-line); color: var(--formation-muted); min-height: 52px; padding: 8px 2px 0; text-align: left; cursor: pointer; font: 11px/1.5 var(--font-body); }
.formation-step-number { display: block; font-size: 9px; letter-spacing: .12em; margin-bottom: 4px; opacity: .7; }
.formation-guide-steps button[aria-pressed="true"] { color: var(--formation-blue); border-color: var(--formation-blue); }
.formation-materials { display: flex; flex-wrap: wrap; gap: 7px 14px; color: var(--formation-muted); font: 10px/1.6 var(--font-body); }
.formation-materials > span { display: inline-flex; align-items: center; gap: 5px; white-space: nowrap; }
.formation-materials i { display: block; width: 7px; height: 7px; background: #6488b3; }
.formation-materials [data-tone="metal"] i { background: #a6b3c7; border: 1px solid #7a8ca5; }
.formation-materials [data-tone="base"] i { background: #2a3444; }
.formation-materials [data-tone="light"] i { background: #ccdef0; border: 1px solid #6b95c5; }
.formation-materials [data-tone="glass"] i { background: transparent; border: 1px solid #6f8da9; }
.formation-guide-detail { margin-top: 12px; position: relative; }
.formation-guide-detail > summary { cursor: pointer; list-style: none; min-height: 44px; display: flex; align-items: center; gap: 12px; color: var(--formation-muted); font: 11px var(--font-body); }
.formation-guide-detail > summary::-webkit-details-marker { display: none; }
.formation-guide-detail > summary > span:last-child { font-size: 16px; }
.formation-guide-detail[open] > summary > span:last-child { transform: rotate(45deg); }
.formation-guide-detail-body { position: absolute; bottom: 100%; left: 0; width: 300px; max-width: calc(100vw - 40px); max-height: min(370px,70svh); overflow: auto; overscroll-behavior: contain; z-index: 8; padding: 18px 20px; background: var(--formation-white); border: 1px solid var(--formation-line); box-shadow: 0 12px 32px color-mix(in oklab,var(--formation-dark) 8%,transparent); }
.formation-guide-detail-body p { font: 12px/1.8 var(--font-body); color: var(--formation-ink); margin: 0 0 12px; }
.formation-guide-detail-body .formation-guide-limit { color: var(--formation-muted); font-size: 11px; }
.formation-guide-detail-body a { min-height: 44px; display: flex; align-items: center; justify-content: space-between; gap: 8px; color: var(--formation-blue); text-decoration: none; font-size: 11px; }
.formation-guide-detail summary:focus-visible { outline: 2px solid var(--formation-blue); outline-offset: 2px; }
.formation-process-tabs { grid-template-columns: repeat(6,minmax(0,1fr)); }
.formation-process-ui { max-width: 700px; margin-top: 8px; }
.formation-timeline { gap: 16px; }
.formation-phase { min-width: 200px; }
[data-guide-mode="structure"] .formation-guide-steps,[data-guide-mode="structure"] .formation-guide-detail,[data-guide-mode="structure"] .formation-materials,[data-guide-mode="structure"] .formation-guide-count { display: none; }
[data-renderer="fallback"] .formation-guide { display: none; }
@media (min-width: 901px) and (max-height: 760px) {
  .formation-theater { min-height: 300px; }
  .formation-gallery .formation-theater .formation-stage { min-height: 300px; }
  .formation-guide { padding-block: 10px; }
  .formation-guide-eyebrow { margin-bottom: 12px; }
  .formation-guide-steps { margin-block: 12px; }
}
@media (max-width: 900px) {
  .formation-theater { display: flex; flex-direction: column; gap: 0; }
  .formation-gallery .formation-theater .formation-stage { order: 0; margin: 0 -18px; min-height: 260px; flex: 1; }
  .formation-guide { order: 1; align-self: stretch; padding: 0; }
  .formation-guide-eyebrow { margin: 0 0 8px; font-size: 9px; }
  .formation-guide-title { font-size: 21px; line-height: 1.4; min-height: 29px; margin-bottom: 7px; }
  .formation-guide-copy { font-size: 12px; line-height: 1.75; min-height: 42px; }
  .formation-guide-steps { margin-block: 10px 12px; gap: 8px; }
  .formation-guide-steps button { display: flex; gap: 8px; align-items: center; padding: 0 2px; min-height: 44px; }
  .formation-step-number { margin: 0; }
  .formation-guide-detail { margin: 0; }
  .formation-guide-detail > summary { min-height: 38px; }
  .formation-guide-detail-body { top: auto; bottom: 100%; width: min(420px,100%); }
  .formation-materials { gap: 8px 16px; }
  .formation-process-ui { margin-top: 8px; }
  .formation-phase { min-width: 150px; font-size: 10px; }
}
@media (max-width: 767px) {
  .formation-gallery .formation-inner { padding-top: 8px; }
  .formation-gallery .formation-intro { margin-top: 0; }
  .formation-gallery .formation-theater .formation-stage { min-height: 230px; }
  .formation-guide-eyebrow { display: none; }
  .formation-guide-title { font-size: 19px; min-height: 27px; }
  .formation-guide-steps button { gap: 5px; font-size: 10px; }
  .formation-guide-copy { min-height: 42px; }
  .lang-en .formation-guide-copy { min-height: 63px; }
  .formation-process-tabs button { padding-inline: 2px; font-size: 11px; }
  .formation-guide-detail > summary { min-height: 44px; }
  .formation-quietbar { padding-top: 0; }
}

/* Short app panes keep playback controls beside the story, not below the fold. */
@media (max-width: 767px) and (max-height: 700px) {
  .formation-gallery .formation-inner { padding-bottom: 12px; }
  .formation-gallery .formation-summary { margin-bottom: 0; }
  .formation-theater { min-height: 0; }
  .formation-gallery .formation-theater .formation-stage { min-height: 160px; }
  .lang-en .formation-gallery .formation-theater .formation-stage { min-height: 139px; }
}

/* R9 — explanations live in the scene, anchored to the current material action. */
.formation-theater { display: flex; flex: 1; min-height: 330px; gap: 0; }
.formation-gallery .formation-theater .formation-stage,
.lang-en .formation-gallery .formation-theater .formation-stage { flex: 1; height: auto; min-height: 330px; margin: 0; }
.formation-annotation { position: absolute; inset: 0; z-index: 2; pointer-events: none; }
.formation-annotation-leader { position: absolute; inset: 0; overflow: visible; }
.formation-annotation-path { fill: none; stroke: var(--formation-blue); stroke-width: .8; opacity: .46; vector-effect: non-scaling-stroke; }
.formation-annotation-dot { fill: var(--formation-blue); stroke: var(--formation-paper); stroke-width: 1.5; }
.formation-annotation-label { position: absolute; top: 0; left: 0; width: 220px; will-change: transform; }
.formation-annotation-label .formation-guide-title,
.lang-en .formation-annotation-label .formation-guide-title { font: 500 17px/1.4 var(--font-body); margin: 0 0 7px; min-height: 0; letter-spacing: -.02em; }
.formation-annotation-label .formation-guide-copy,
.lang-en .formation-annotation-label .formation-guide-copy { font: 12px/1.8 var(--font-body); margin: 0; min-height: 0; color: var(--formation-muted); text-wrap: pretty; }
.formation-annotation-label .formation-guide-title,.formation-annotation-label .formation-guide-copy { text-shadow: none; }
.formation-process-ui { margin-top: 0; }
.formation-guide-steps { max-width: 440px; margin: 0 auto 8px; gap: 20px; }
.formation-guide-steps button { display: flex; align-items: center; justify-content: center; gap: 9px; min-height: 44px; padding: 0; border-top: 0; border-bottom: 1px solid var(--formation-faint); font-size: 11px; }
.formation-step-number { display: inline; margin: 0; }
.formation-guide-steps button[aria-pressed="true"] { border-bottom-color: var(--formation-blue); }
.formation-explore-panel { max-height: min(530px,calc(100svh - 140px)); overflow: auto; overscroll-behavior: contain; }
.formation-explore-panel .formation-materials { margin-top: 18px; }
.formation-explore-panel .formation-guide-detail { margin-top: 10px; }
.formation-explore-panel .formation-guide-detail-body { position: static; width: auto; max-width: none; max-height: none; overflow: visible; padding: 4px 0 0; border: 0; box-shadow: none; background: none; }
.formation-explore-panel .formation-guide-detail > summary { justify-content: space-between; }
[data-guide-mode="structure"] .formation-annotation,[data-renderer="fallback"] .formation-annotation { display: none; }
@media (max-width: 767px) {
  .formation-theater { min-height: 300px; }
  .formation-gallery .formation-theater .formation-stage,
  .lang-en .formation-gallery .formation-theater .formation-stage { min-height: 300px; }
  .formation-annotation-label { width: min(220px,calc(100% - 24px)); }
  .formation-annotation-label .formation-guide-title,.lang-en .formation-annotation-label .formation-guide-title { font-size: 15px; margin-bottom: 5px; }
  .formation-annotation-label .formation-guide-copy,.lang-en .formation-annotation-label .formation-guide-copy { font-size: 11px; line-height: 1.7; }
  .formation-guide-steps { gap: 12px; margin-bottom: 4px; }
  .formation-guide-steps button { min-height: 44px; font-size: 10px; }
  .formation-explore > summary { font-size: 11px; gap: 10px; }
  .formation-concept { margin-left: 8px; letter-spacing: 0; }
}
@media (prefers-reduced-motion: reduce) { .formation-annotation-label { will-change: auto; } }

/* R10 — a calm reading dock, sequenced captions, soft scene hand-offs. */
.formation-webgl { transition: none; }
.formation-transition-canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 1; pointer-events: none; opacity: 0; }
.formation-annotation-label { width: 240px; }
.formation-annotation-label { isolation: isolate; }
.formation-annotation::before { content: ""; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(180deg,var(--formation-paper),color-mix(in srgb,var(--formation-paper) 96%,transparent) var(--reading-solid,110px),transparent var(--reading-end,200px)); opacity: var(--close-reading,0); }
.formation-annotation[data-dock="side"]::before { opacity: 0; }
.formation-annotation-previous { position: absolute; inset: 0; opacity: 0; }
.formation-annotation-label .formation-guide-title,
.lang-en .formation-annotation-label .formation-guide-title,
.formation-note-old-title { font: 500 18px/1.4 var(--font-body); margin: 0 0 8px; letter-spacing: -.025em; }
.formation-annotation-label .formation-guide-copy,
.lang-en .formation-annotation-label .formation-guide-copy,
.formation-note-old-copy { font: 13px/1.8 var(--font-body); margin: 0; color: var(--formation-muted); text-wrap: pretty; }
.formation-guide-title,.formation-guide-copy,.formation-annotation-previous { will-change: transform,opacity; }
.formation-annotation-path { stroke-width: .85; stroke-linecap: round; }
.formation-guide-steps button,.formation-process-tabs button { transition: color 320ms ease,border-color 420ms ease; }
[data-render-mode="webgl"] .formation-stage { cursor: grab; touch-action: pan-y; }
[data-orbit-dragging="true"] .formation-stage { cursor: grabbing; }
.formation-stage:focus-visible { outline: 1px solid var(--formation-blue); outline-offset: 3px; }
.formation-theater { position: relative; }
.formation-focus-layer { position: absolute; inset: 0; pointer-events: none; z-index: 4; }
.formation-focus-point { position: absolute; left: 0; top: 0; width: 44px; height: 44px; padding: 0; border: 0; border-radius: 50%; background: transparent; pointer-events: auto; cursor: pointer; opacity: 0; transition: opacity 180ms ease; }
.formation-focus-point[hidden] { display: none; }
.formation-focus-point[data-visible="true"] { opacity: 1; }
.formation-focus-point:disabled { pointer-events: none; opacity: 0; }
.formation-focus-ring { position: absolute; inset: 15px; border: 1px solid var(--formation-blue); border-radius: 50%; background: var(--formation-paper); box-shadow: 0 0 0 5px color-mix(in srgb,var(--formation-paper) 46%,transparent); transition: transform 200ms ease,box-shadow 200ms ease; }
.formation-focus-ring::after { content: ""; position: absolute; inset: 4px; border-radius: 50%; background: var(--formation-blue); }
.formation-focus-point:hover .formation-focus-ring,.formation-focus-point:focus-visible .formation-focus-ring { transform: scale(1.2); box-shadow: 0 0 0 6px color-mix(in srgb,var(--formation-paper) 75%,transparent); }
.formation-focus-point:focus-visible { outline: 1px solid var(--formation-blue); outline-offset: 2px; }
.formation-focus-tip { position: absolute; bottom: 46px; left: calc(50% + var(--tip-shift,0px)); width: 200px; max-width: calc(100vw - 40px); text-align: center; transform: translate(-50%,4px); padding: 6px 9px; background: var(--formation-paper); color: var(--formation-ink); font: 12px/1.5 var(--font-body); opacity: 0; pointer-events: none; transition: opacity 180ms ease,transform 180ms ease; }
.formation-focus-point:hover .formation-focus-tip,.formation-focus-point:focus-visible .formation-focus-tip { opacity: 1; transform: translate(-50%,0); }
@media(prefers-reduced-motion:reduce) { .formation-focus-point,.formation-focus-ring,.formation-focus-tip { transition: none; } }
.formation-gallery .formation-reset-quiet { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; padding: 0; border: 0; background: transparent; color: var(--formation-muted); font: 22px var(--font-body); cursor: pointer; }
.formation-reset-quiet:hover { color: var(--formation-ink); }
.formation-return-label { display: none; font: 12px/1.5 var(--font-body); white-space: nowrap; }
[data-close-view="true"] .formation-reset-quiet { width: auto; min-width: 80px; padding: 0 10px; }
[data-close-view="true"] .formation-reset-symbol { display: none; }
[data-close-view="true"] .formation-return-label { display: inline; }
@media (max-width: 420px) { .formation-concept { display: none; } }
@media (max-width: 767px) {
  .formation-annotation-label { width: min(240px,calc(100% - 24px)); }
  .formation-annotation-label .formation-guide-title,.lang-en .formation-annotation-label .formation-guide-title,.formation-note-old-title { font-size: 16px; margin-bottom: 6px; }
  .formation-annotation-label .formation-guide-copy,.lang-en .formation-annotation-label .formation-guide-copy,.formation-note-old-copy { font-size: 12px; line-height: 1.75; }
}
@media (prefers-reduced-motion: reduce) {
  .formation-guide-title,.formation-guide-copy,.formation-annotation-previous { will-change: auto; }
  .formation-guide-steps button,.formation-process-tabs button { transition: none; }
}

/* R20: a brand homepage first, process controls on request.
 * Existing silver/cobalt tokens, system typography and fabrication timeline retained.
 * Design variance 6 / motion 6 / density 2. No new hero slogans or visual panels.
 */
.hub-home-formation .brand { gap: 9px; }
.hub-home-formation .brand img { width: 44px; height: 44px; border: 0; border-radius: 0; background: none; object-fit: contain; box-shadow: none; }
.hub-home-formation .site-header .brand strong { font-size: 20px; font-weight: 600; letter-spacing: -.035em; }
.formation-gallery [hidden] { display: none !important; }
.formation-gallery .formation-inner { min-height: calc(100svh - 76px); padding-top: 18px; padding-bottom: 22px; }
.formation-gallery .formation-intro { margin-top: 0; }
.formation-gallery .formation-theater { min-height: 330px; margin-block: 4px 8px; }
.formation-gallery .formation-theater .formation-stage { min-height: 330px; }
.formation-gallery .formation-quietbar { padding-top: 0; margin-top: 0; gap: 16px; min-height: 44px; flex-wrap: nowrap; }
.formation-gallery .formation-quiet-actions { gap: 12px; margin-left: auto; }
.formation-gallery .formation-pause { border: 0; color: var(--formation-muted); }
.formation-gallery .formation-reset-quiet { visibility: hidden; opacity: 0; pointer-events: none; }
.formation-gallery[data-view-adjusted="true"] .formation-reset-quiet,
.formation-gallery[data-close-view="true"] .formation-reset-quiet { visibility: visible; opacity: 1; pointer-events: auto; }
.formation-process-picker { position: relative; z-index: 6; }
.formation-process-picker > summary { display: inline-flex; align-items: center; gap: 12px; list-style: none; cursor: pointer; min-height: 44px; padding: 0 6px 0 0; color: var(--formation-muted); font: 13px/1.5 var(--font-body); white-space: nowrap; }
.formation-process-picker > summary::-webkit-details-marker { display: none; }
.formation-process-picker > summary:hover,.formation-process-picker[open] > summary { color: var(--formation-ink); }
.formation-picker-chevron { width: 5px; height: 5px; border: solid currentColor; border-width: 0 1px 1px 0; transform: rotate(45deg); margin-top: -3px; }
.formation-process-picker[open] .formation-picker-chevron { transform: rotate(225deg); margin-top: 2px; }
.formation-picker-menu { position: absolute; bottom: calc(100% + 12px); left: 0; width: 270px; max-width: calc(100vw - 40px); padding: 20px; background: var(--formation-white); border: 1px solid var(--formation-faint); border-radius: 6px; box-shadow: 0 12px 36px color-mix(in oklab,var(--formation-dark) 9%,transparent); }
.formation-picker-menu > p { margin: 0 0 10px; color: var(--formation-muted); font: 11px/1.6 var(--font-body); }
.formation-picker-menu .formation-process-tabs { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); border: 0; gap: 2px 8px; }
.formation-picker-menu .formation-process-tabs button { min-height: 44px; text-align: left; padding: 8px; border-radius: 3px; font-size: 13px; white-space: nowrap; }
.formation-picker-menu .formation-process-tabs button::after { display: none; }
.formation-picker-menu .formation-process-tabs button:hover { background: var(--formation-paper); color: var(--formation-ink); }
.formation-picker-menu .formation-process-tabs button[aria-pressed="true"] { background: var(--formation-paper); color: var(--formation-blue); }
.formation-picker-menu > .formation-picker-disclaimer { margin: 14px 0 0; font-size: 10px; }
.formation-discovery-hint { position: absolute; bottom: 46px; left: calc(50% + var(--tip-shift,0px)); width: max-content; max-width: 220px; padding: 7px 12px; border-radius: 3px; background: var(--formation-paper); color: var(--formation-ink); font: 12px/1.5 var(--font-body); white-space: nowrap; pointer-events: none; opacity: 0; transform: translate(-50%,5px); transition: opacity 500ms var(--ease-out),transform 650ms var(--ease-out); }
[data-discovery-hint="on"] .formation-discovery-hint { opacity: 1; transform: translate(-50%,0); }
.formation-focus-ring::before { content: ""; position: absolute; inset: -6px; border: 1px solid var(--formation-blue); border-radius: 50%; opacity: 0; }
[data-discovery-hint="on"] .formation-focus-ring::before { animation: formation-invite 1800ms var(--ease-out) 1; }
[data-discovery-hint="on"] .formation-focus-tip { display: none; }
.formation-focus-tip { border-radius: 3px; transition-delay: 500ms; }
.formation-focus-point:focus-visible .formation-focus-tip { transition-delay: 0ms; }
@keyframes formation-invite { 0% { transform: scale(.8); opacity: 0; } 25% { opacity: .4; } 100% { transform: scale(1.9); opacity: 0; } }
@media (max-width: 767px) {
  .formation-gallery .formation-inner { min-height: calc(100svh - 68px); padding-top: 12px; padding-bottom: 14px; }
  .formation-gallery .formation-theater { margin-block: 0 6px; min-height: 280px; }
  .formation-gallery .formation-theater .formation-stage,.lang-en .formation-gallery .formation-theater .formation-stage { min-height: 280px; }
  .formation-gallery .formation-quiet-actions { gap: 4px; }
  .formation-process-picker > summary { font-size: 12px; }
  .formation-gallery .formation-reset-quiet { font-size: 20px; }
  .hub-home-formation .brand img { width: 40px; height: 40px; }
}
@media (max-width: 767px) and (max-height: 600px) {
  .formation-gallery .formation-theater { min-height: 230px; }
  .formation-gallery .formation-theater .formation-stage,.lang-en .formation-gallery .formation-theater .formation-stage { min-height: 230px; }
}
@media (prefers-reduced-motion: reduce) {
  .formation-discovery-hint,.formation-focus-tip { transition: opacity 120ms linear; transform: translate(-50%,0); }
  [data-discovery-hint="on"] .formation-focus-ring::before { animation: none; }
}