/* Local ACSS 4.x-compatible token subset; ACSS itself is not installed.
 * Values belong to Flipside. Custom theme/signal roles are explicitly namespaced.
 * Sources and migration notes: design/acss-token-contract.md. */
@property --service-glow-angle {
  syntax: "<angle>";
  inherits: false;
  initial-value: 0deg;
}
:root {
  color-scheme: light;
  --body-bg-color: #f8f9f7;
  --body-color: #15171b;
  --flipside-text-muted: #626873;
  --signal-color-default: #3066c9;
  --signal-color-sound: #2863cb;
  --signal-color-imprints: #315e48;
  --signal-color-web: #b697f0;
  --signal-glow-default: #3066c933;
  --signal-glow-sound: #2863cb38;
  --signal-glow-imprints: #315e482b;
  --signal-glow-web: #b697f045;
  --primary: var(--signal-color-default);
  --signal-color: var(--signal-color-default);
  --flipside-border: #c5c8cd;
  --signal-terminal: #747c89;
  --signal-glow: var(--signal-glow-default);
  --flipside-section-glow: #3066c910;
  --signal-track: #85818c;
  --flipside-mobile-height: 100svh;
  --text-font-family: Arial, Helvetica, sans-serif;
  --heading-font-family: var(--text-font-family);
  --text-line-height: 1.5;
  --heading-line-height: 1.2;
  --text-xs: 0.6875rem;
  --text-s: 0.8125rem;
  --text-m: clamp(1rem, 0.88rem + 0.25vw, 1.125rem);
  --h2: clamp(1.65rem, 1.1rem + 1.3vw, 2.75rem);
  --h1: clamp(3.8rem, 1rem + 11.7vw, 11.5rem);
  --space-xs: 0.5rem;
  --space-s: 1rem;
  --space-m: clamp(1.5rem, 1rem + 1vw, 2rem);
  --space-l: clamp(2rem, 1rem + 2vw, 3rem);
  --section-space-l: clamp(3rem, 1rem + 5vw, 4.5rem);
  --section-space-xl: clamp(6rem, 3rem + 6vw, 8.5rem);
  --content-width: 88.5rem;
  --gutter: clamp(1.5rem, 1rem + 2.5vw, 4rem);
  --content-width-safe: min(var(--content-width), calc(100% - var(--gutter) * 2));
  --content-gap: var(--space-m);
  --grid-gap: var(--space-l);
  --action: var(--primary);
  --duration-theme: 360ms;
  --duration-signal: 275ms;
  --duration-terminal-pulse: 440ms;
  --duration-page-transition: 320ms;
  --page-transition-color: var(--primary);
  --flipside-card-radius: 4px;
  --flipside-card-glow-width: 2px;
  --flipside-card-light: #ffffffd9;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-page-transition: cubic-bezier(0.65, 0, 0.35, 1);
}
/* Immediate settlement skips intermediate palette frames when travel is cancelled. */
:root[data-theme-handoff] { --duration-theme: 0ms; }

* { box-sizing: border-box; }
body {
  --action: var(--primary);
  margin: 0;
  background: var(--body-bg-color);
  color: var(--body-color);
  font-family: var(--text-font-family);
  font-size: var(--text-m);
  line-height: var(--text-line-height);
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--duration-theme), color var(--duration-theme);
}
body[data-theme="sound"] {
  --body-bg-color: #eef3f8;
  --body-color: #141c27;
  --flipside-text-muted: #586678;
  --flipside-border: #bdc8d6;
  --primary: var(--signal-color-sound);
  --signal-color: var(--signal-color-sound);
  --signal-glow: var(--signal-glow-sound);
  --flipside-section-glow: #2863cb10;
}
body[data-theme="imprints"] {
  --body-bg-color: #f5f0e6;
  --body-color: #1c2823;
  --flipside-text-muted: #61665d;
  --flipside-border: #c9c8bc;
  --primary: var(--signal-color-imprints);
  --signal-color: var(--signal-color-imprints);
  --signal-terminal: #72786d;
  --signal-glow: var(--signal-glow-imprints);
  --flipside-section-glow: #315e4815;
}
body[data-theme="web"] {
  --flipside-card-light: #ffffff00;
  color-scheme: dark;
  --body-bg-color: #17131f;
  --body-color: #f2eff5;
  --flipside-text-muted: #bbb5c5;
  --flipside-border: #504958;
  --primary: var(--signal-color-web);
  --signal-color: var(--signal-color-web);
  --signal-terminal: #a69aac;
  --signal-glow: var(--signal-glow-web);
  --flipside-section-glow: #b697f040;
}
a { color: inherit; text-underline-offset: 0.25em; }
button { font: inherit; }
.icon { inline-size: 1.1em; block-size: 1.1em; flex: none; vertical-align: -0.15em; }
button, a { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 6px;
  border-radius: var(--flipside-card-radius);
}
p, h1, h2 { margin: 0; }
/* Preserve native hiding even when a component declares its own display. */
[hidden] { display: none !important; }
.visually-hidden {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}
.skip-link {
  position: absolute;
  z-index: 5;
  inset-block-start: 1rem;
  inset-inline-start: var(--gutter);
  transform: translateY(-200%);
  padding: 0.75rem 1rem;
  background: var(--body-bg-color);
}
.skip-link:focus { transform: translateY(0); }
.page {
  inline-size: var(--content-width-safe);
  min-block-size: 100vh;
  min-block-size: 100svh;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
}
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-m);
  padding-block-start: var(--space-m);
}
.brand { display: block; flex-shrink: 0; inline-size: clamp(10rem, 19vw, 16rem); }
.brand__image { display: block; inline-size: 100%; block-size: auto; overflow: visible; }
.brand__accent { flood-color: var(--primary); transition: flood-color var(--duration-theme); }
.brand__ink { flood-color: var(--body-color); transition: flood-color var(--duration-theme); }
.site-header__location, .hero__eyebrow {
  font-size: var(--text-s);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--flipside-text-muted);
  transition: color var(--duration-theme);
}
.site-header__location { text-align: end; }
.splash { position: relative; padding-block: var(--section-space-l) var(--space-l); }
.splash:focus { outline: none; }
.hero__eyebrow { margin-block-end: var(--space-m); }
.hero__title {
  position: relative;
  z-index: 1;
  font-family: var(--heading-font-family);
  font-size: var(--h1);
  font-weight: 600;
  letter-spacing: -0.065em;
  line-height: 0.85;
}
.hero__accent {
  display: inline-block;
  margin-block-start: 0.055em;
  color: var(--primary);
  transition: color var(--duration-theme);
}
.hero__dot {
  display: inline-block;
  inline-size: 0.18em;
  block-size: 0.18em;
  border-radius: 50%;
  margin-inline-start: 0.045em;
  background: currentColor;
}
.signal {
  position: absolute;
  inset: 0;
  inline-size: 100%;
  block-size: 100%;
  pointer-events: none;
  overflow: visible;
  visibility: hidden;
}
.signal[data-state="ready"] { visibility: visible; }
.signal__mobile { display: none; }
.signal__track { fill: none; stroke: var(--signal-track); stroke-width: 1; }
.signal[data-target="sound"] { --signal-route-color: var(--signal-color-sound); --signal-route-glow: var(--signal-glow-sound); }
.signal[data-target="imprints"] { --signal-route-color: var(--signal-color-imprints); --signal-route-glow: var(--signal-glow-imprints); }
.signal[data-target="web"] { --signal-route-color: var(--signal-color-web); --signal-route-glow: var(--signal-glow-web); }
.signal__progress { fill: none; stroke: var(--signal-route-color, var(--signal-color)); stroke-width: 1.6; stroke-dasharray: 1; stroke-dashoffset: 1; transition: stroke 120ms var(--ease-out); }
.signal__tip { fill: var(--signal-route-color, var(--signal-color)); transition: fill 120ms var(--ease-out); }
.signal__core { filter: drop-shadow(0 0 4px var(--signal-route-glow, var(--signal-glow))); transition: filter 120ms var(--ease-out); }
.signal__halo { fill: var(--signal-route-glow, var(--signal-glow)); filter: blur(3px); transition: fill 120ms var(--ease-out); }
.signal__aura { fill: url(#signal-aura); }
.signal__aura-color { stop-color: var(--flipside-section-glow); }
.signal__tracks { fill: none; stroke: var(--signal-track); stroke-width: 1; }
.signal__flow { fill: none; stroke: var(--signal-route-color, var(--signal-color)); stroke-width: 1.6; stroke-linecap: round; transition: stroke 120ms var(--ease-out); }
.signal__trace {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  opacity: 0;
  filter: drop-shadow(0 0 5px var(--signal-route-glow, var(--signal-glow)));
}
.services {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--grid-gap);
  margin-block-start: var(--section-space-xl);
}
.service {
  min-inline-size: 0;
  position: relative;
}
.service__card {
  min-inline-size: 0;
  block-size: 100%;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: var(--space-l);
  border: 1px solid transparent;
  border-block-start-color: var(--flipside-border);
  border-radius: var(--flipside-card-radius);
  background: transparent;
  isolation: isolate;
  transition: background-color var(--duration-theme), border-color var(--duration-theme), box-shadow var(--duration-theme);
}
/* A transparent surface keeps idle departments part of the page. */
.service__card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  background: radial-gradient(ellipse at top, var(--flipside-section-glow), transparent 75%),
    linear-gradient(145deg, var(--flipside-card-light), transparent);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-theme);
}
.service__terminal {
  position: absolute;
  inset-inline-start: calc(50% - 6px);
  inset-block-start: -6px;
  z-index: 2;
  inline-size: 12px;
  block-size: 12px;
  border: 1.4px solid var(--signal-terminal);
  border-radius: 50%;
  background: var(--body-bg-color);
  transition: background-color var(--duration-theme), border-color var(--duration-theme);
}
/* The mask keeps the moving highlight on the full perimeter, clear of content. */
.service__glow {
  --service-glow-start: 0deg;
  --service-glow-angle: var(--service-glow-start);
  display: none;
  position: absolute;
  inset: calc(-1 * var(--flipside-card-glow-width));
  border-radius: calc(var(--flipside-card-radius) + var(--flipside-card-glow-width));
  padding: var(--flipside-card-glow-width);
  background: conic-gradient(from var(--service-glow-angle), transparent 0deg 230deg, var(--primary) 285deg, transparent 330deg);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--duration-theme);
}
@supports (mask-composite: exclude) or (-webkit-mask-composite: xor) {
  .service__glow { display: block; }
}
.service__index {
  color: var(--flipside-text-muted);
  font-size: 0.875rem;
  letter-spacing: 0.18em;
  margin-block-end: var(--space-xs);
  transition: color var(--duration-theme);
}
.service__title {
  font-family: var(--heading-font-family);
  font-size: var(--h2);
  font-weight: 400;
  line-height: var(--heading-line-height);
  letter-spacing: -0.045em;
  overflow-wrap: anywhere;
}
.service__description { color: var(--flipside-text-muted); margin-block-start: var(--space-xs); margin-block-end: var(--content-gap); transition: color var(--duration-theme); }
.service__action, .service__availability { margin-block-start: auto; min-block-size: 44px; display: flex; align-items: center; }
.service__action {
  position: relative;
  isolation: isolate;
  inline-size: 100%;
  color: var(--action);
  gap: 0.5em;
  padding: 0.625rem 0;
  border-radius: var(--flipside-card-radius);
  background-color: transparent;
  text-decoration: none;
  transition: color var(--duration-theme), background-color var(--duration-theme), box-shadow var(--duration-theme);
}
.service__action:hover, .service__action:focus-visible { text-decoration: none; }
.service[data-state="active"] .service__action {
  justify-content: center;
  text-align: center;
  padding-inline: var(--space-s);
  color: #fff;
  background-color: var(--primary);
  background-image: linear-gradient(145deg, transparent 10%, #00000038);
  box-shadow: 0 3px 10px var(--flipside-section-glow);
}
.service__arrow { transition: transform 160ms; }
.service__action:hover .service__arrow { transform: translate(2px, -2px); }
.service__availability { inline-size: 100%; flex-wrap: wrap; gap: 0.5rem 1rem; justify-content: space-between; color: var(--flipside-text-muted); transition: color var(--duration-theme); }
.service__preview {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  min-block-size: 44px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--flipside-text-muted);
  font-size: var(--text-s);
  cursor: pointer;
  transition: color var(--duration-theme);
}
.service__preview:hover, .service__preview:focus-visible { color: var(--primary); text-decoration: underline; text-underline-offset: 0.25em; }
.service[data-state="active"] .service__card {
  border-color: color-mix(in srgb, var(--primary) 35%, transparent);
  box-shadow: 0 0 24px var(--flipside-section-glow);
}
.service[data-state="active"] .service__card::before { opacity: 1; }
.service[data-state="active"] .service__glow { opacity: 0.65; animation: service-glow-orbit 7s linear infinite; }
.service[data-state="active"] .service__index { color: var(--primary); }
.service[data-state="active"] .service__terminal {
  border-color: var(--primary);
  background: var(--primary);
  box-shadow: 0 0 0 4px var(--signal-glow), 0 0 16px var(--signal-glow);
}
.service[data-handoff="true"] .service__terminal {
  animation: terminal-arrival var(--duration-terminal-pulse) var(--ease-out);
}
@keyframes service-glow-orbit {
  from { --service-glow-angle: var(--service-glow-start); }
  to { --service-glow-angle: calc(var(--service-glow-start) + 360deg); }
}
@keyframes terminal-arrival {
  0% { box-shadow: 0 0 0 4px var(--signal-glow), 0 0 16px var(--signal-glow); transform: scale(1); }
  48% { box-shadow: 0 0 0 9px var(--signal-glow), 0 0 24px var(--signal-glow); transform: scale(1.12); }
  100% { box-shadow: 0 0 0 4px var(--signal-glow), 0 0 16px var(--signal-glow); transform: scale(1); }
}
.site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-s);
  margin-block-start: auto;
  padding-block: var(--space-s);
  color: var(--flipside-text-muted);
  font-size: var(--text-s);
  transition: color var(--duration-theme), border-color var(--duration-theme);
}
.splash + .site-footer { margin-block-start: auto; border-block-start: 1px solid var(--flipside-border); }
.site-footer a { min-block-size: 44px; display: inline-flex; align-items: center; text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.privacy { max-inline-size: 42rem; padding-block: var(--section-space-l); }
.privacy h1 { font-size: clamp(2.75rem, 7vw, 5rem); letter-spacing: -0.055em; line-height: 1.1; margin-block-end: var(--space-l); }
.privacy h2 { font-size: 1.4rem; margin-block: var(--space-l) var(--space-xs); }
.privacy p + p { margin-block-start: var(--space-s); }
.privacy a { color: var(--primary); }

/* Real panels cover before navigation and reveal after the new document loads.
 * One state owner replaces browser-specific snapshot timing. */
.page-transition {
  position: fixed;
  inset: 0;
  z-index: 100;
  pointer-events: none;
  visibility: hidden;
}
:root[data-page-transition] .page-transition { visibility: visible; }
:root[data-page-transition="cover"] .page-transition { pointer-events: auto; }
.page-transition__panel {
  position: absolute;
  inset: -1px;
  background: var(--page-transition-color, var(--primary));
  transition: transform var(--duration-page-transition) var(--ease-page-transition);
}
.page-transition__panel[data-page-transition-panel="northwest"] {
  /* One-pixel overlap prevents an antialiased seam while fully covered. */
  clip-path: polygon(0 0, 100% 0, 100% 1px, 1px 100%, 0 100%);
  transform: translate(-100%, -100%);
}
.page-transition__panel[data-page-transition-panel="southeast"] {
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
  transform: translate(100%, 100%);
}
:root[data-page-transition="cover"] .page-transition__panel { transform: translate(0, 0); }

@media (min-width: 70rem) and (min-height: 55rem) {
  .splash + .site-footer { margin-block-start: auto; }
  .splash { padding-block-end: var(--space-m); }
}
@media (min-width: 60rem) and (max-height: 53rem) {
  :root {
    --space-m: 1.5rem;
    --space-l: 2rem;
    --section-space-l: var(--space-l);
    --section-space-xl: 5rem;
    --h1: clamp(4rem, 10vw, 8.5rem);
  }
}
@media (min-width: 60rem) and (max-height: 47rem) {
  :root {
    --space-m: 1.125rem;
    --space-l: 1.5rem;
    --section-space-l: var(--space-m);
    --section-space-xl: 4.5rem;
    --h1: clamp(4rem, 14.5vh, 7.5rem);
  }
}
@media (width < 60rem) {
  :root { --h1: clamp(3.5rem, 0.4rem + 12.8vw, 6.5rem); --section-space-l: 3.75rem; }
  .page { min-block-size: var(--flipside-mobile-height); }
  .site-header { align-items: flex-start; }
  .site-header__location { max-inline-size: 7rem; font-size: 0.625rem; padding-block-start: 0.25rem; }
  .hero__eyebrow { font-size: var(--text-xs); letter-spacing: 0.15em; }
  .services { grid-template-columns: minmax(0, 1fr); margin-block-start: var(--space-l); gap: var(--space-l); padding-inline-start: var(--space-m); }
  .service {
    min-block-size: max(28rem, calc(var(--flipside-mobile-height) * 0.75));
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
  .service__card {
    inline-size: 100%;
    block-size: auto;
    min-block-size: clamp(18rem, calc(var(--flipside-mobile-height) * 0.42), 22rem);
    justify-content: center;
    padding-block: var(--space-m);
    padding-inline: var(--space-m);
  }
  /* The idle edge faces the rail; connection reveals the complete border. */
  .service:not([data-state="active"]) .service__card {
    border-block-start-color: transparent;
    border-inline-start-color: var(--flipside-border);
  }
  /* The stacked surface receives its light from the circuit-facing edge. */
  .service__card::before {
    background: radial-gradient(ellipse at left, var(--flipside-section-glow), transparent 75%),
      linear-gradient(90deg, var(--flipside-card-light), transparent);
  }
  .service[data-state="active"] .service__card {
    box-shadow: -8px 0 20px -12px var(--signal-glow);
  }
  .service__glow {
    /* The gradient peaks at 285deg; this places it at the left connector (270deg). */
    --service-glow-start: -15deg;
  }
  .service__terminal { inset-inline-start: calc(-1 * var(--space-m) - 4px); inset-block-start: calc(50% - 4px); inline-size: 8px; block-size: 8px; }
  .service__terminal::after {
    content: "";
    position: absolute;
    inset-inline-start: 100%;
    inset-block-start: 50%;
    inline-size: calc(var(--space-m) - 3px);
    block-size: 1px;
    background: var(--signal-track);
  }
  .service[data-state="active"] .service__terminal::after { background: var(--primary); }
  .service__description { margin-block-end: 0.75rem; }
  .service__action { max-inline-size: 20rem; }
  .service__action, .service__availability { margin-block-start: var(--space-m); }
  .signal__tracks, .signal__flow { display: none; }
  .signal__mobile { display: block; }
  /* Only the space AFTER the sections may grow with browser chrome. This keeps
   * Web reachable at the fixed connection line without moving any section. */
  .splash {
    padding-block-end: max(var(--space-l), calc(var(--flipside-mobile-height) * 0.125));
    padding-block-end: max(var(--space-l), calc(var(--flipside-mobile-height) * 0.125 + max(0px, 100dvh - var(--flipside-mobile-height))));
  }
  .splash + .site-footer { margin-block-start: var(--space-s); }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .page-transition { display: none; }
  .service__arrow { transform: none !important; }
  .signal__progress, .signal__tip { visibility: hidden; }
}
@media (forced-colors: active) {
  .brand__image { filter: none; }
  .brand__accent, .brand__ink { flood-color: CanvasText; }
  .hero__dot { background: CanvasText; }
  .signal { display: none; }
  .service__glow { display: none !important; }
  .service[data-state="active"] .service__card { border-color: Highlight; }
  .service__terminal { background: Canvas; border-color: CanvasText; }
  .service[data-state="active"] .service__terminal { background: Highlight; }
  a:focus-visible, button:focus-visible { outline-color: Highlight; }
}