/* ============================================================
   mobile-7a72ea-viewport.css
   casino-game-online.click - "Steel Ledger" mobile design system
   Canvas: 320-430px phone frame, centered on wide screens.
   Palette: #C0C0C0 silver / #F8F8FF ghost white / #2C3E50 slate
            #BDC3C7 mist / #4A4A4A graphite
   Voice: poster headings over narrow body text, low-radius
          sectioned blocks, compact square game directory.
   ============================================================ */

/* ---------- design tokens ---------- */
:root {
  --ca72ea-ink: #2C3E50;
  --ca72ea-graphite: #4A4A4A;
  --ca72ea-paper: #F8F8FF;
  --ca72ea-silver: #C0C0C0;
  --ca72ea-mist: #BDC3C7;
  --ca72ea-line: rgba(189, 195, 199, 0.22);
  --ca72ea-line-strong: rgba(192, 192, 192, 0.42);
  --ca72ea-veil: rgba(44, 62, 80, 0.94);
  --ca72ea-panel: rgba(74, 74, 74, 0.34);
  --ca72ea-font-head: 'Oswald', 'Arial Narrow', 'Helvetica Neue', sans-serif;
  --ca72ea-font-body: 'Barlow Semi Condensed', 'Segoe UI', Arial, sans-serif;
  --ca72ea-header-h: 58px;
  --ca72ea-bnav-h: 64px;
  --ca72ea-tap: 44px;
  --ca72ea-ease: cubic-bezier(0.33, 1, 0.68, 1);
}

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

html {
  background: #23303f;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0 auto;
  max-width: 430px;
  min-height: 100vh;
  background: var(--ca72ea-ink);
  color: var(--ca72ea-paper);
  font-family: var(--ca72ea-font-body);
  font-size: 15.5px;
  line-height: 1.52;
  font-weight: 400;
  letter-spacing: 0.006em;
  overflow-x: hidden;
  border-left: 1px solid rgba(189, 195, 199, 0.10);
  border-right: 1px solid rgba(189, 195, 199, 0.10);
}

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

h1, h2, h3 {
  font-family: var(--ca72ea-font-head);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.045em;
  line-height: 1.12;
  margin: 0;
  text-wrap: balance;
}

p { margin: 0 0 0.85em; }
p:last-child { margin-bottom: 0; }

a { color: var(--ca72ea-silver); text-decoration: none; }
a:hover { color: var(--ca72ea-paper); }

button {
  font-family: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--ca72ea-silver);
  outline-offset: 2px;
  border-radius: 2px;
}

/* skip link */
.ca72ea-skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ca72ea-paper);
  color: var(--ca72ea-ink);
  padding: 8px 14px;
  font-weight: 600;
  z-index: 200;
}
.ca72ea-skip:focus { left: 8px; top: 8px; }

/* ---------- fixed top bar: asymmetric brand header ---------- */
.ca72ea-topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  margin: 0 auto;
  max-width: 430px;
  height: var(--ca72ea-header-h);
  background: var(--ca72ea-veil);
  backdrop-filter: blur(9px);
  -webkit-backdrop-filter: blur(9px);
  border-bottom: 1px solid var(--ca72ea-line-strong);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 0 10px 0 12px;
  z-index: 120;
}

/* brand block: logo + wordmark only */
.ca72ea-brand {
  display: flex;
  align-items: center;
  gap: 9px;
  min-width: 0;
  /* asymmetry: tall logo plate offset from the bar edges */
  padding: 5px 10px 5px 5px;
  border-right: 1px solid var(--ca72ea-line);
  margin-right: 2px;
}

.ca72ea-logo {
  width: 40px;
  height: 40px;
  border-radius: 4px;
  border: 1px solid var(--ca72ea-line-strong);
  background: var(--ca72ea-graphite);
  object-fit: cover;
  flex: 0 0 auto;
}

.ca72ea-brand-name {
  font-family: var(--ca72ea-font-head);
  font-weight: 700;
  font-size: 15px;
  line-height: 0.98;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ca72ea-paper);
  white-space: nowrap;
}
.ca72ea-brand-name em {
  display: block;
  font-style: normal;
  color: var(--ca72ea-silver);
  font-size: 11px;
  letter-spacing: 0.28em;
  margin-top: 3px;
}

/* action rail: register / login / burger */
.ca72ea-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 0 0 auto;
}

.ca72ea-btn {
  min-height: 34px;
  padding: 6px 11px;
  border-radius: 3px;
  font-family: var(--ca72ea-font-head);
  font-weight: 600;
  font-size: 12.5px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  transition: background-color 0.18s var(--ca72ea-ease), color 0.18s var(--ca72ea-ease);
}

.ca72ea-btn-register {
  background: var(--ca72ea-paper);
  color: var(--ca72ea-ink);
}
.ca72ea-btn-register:hover { background: var(--ca72ea-silver); color: var(--ca72ea-ink); }

.ca72ea-btn-login {
  border: 1px solid var(--ca72ea-line-strong);
  color: var(--ca72ea-mist);
}
.ca72ea-btn-login:hover { color: var(--ca72ea-paper); border-color: var(--ca72ea-silver); }

/* burger with sliding line micro-interaction */
.ca72ea-burger {
  width: var(--ca72ea-tap);
  height: var(--ca72ea-tap);
  display: grid;
  place-items: center;
  border: 1px solid var(--ca72ea-line);
  border-radius: 3px;
  flex: 0 0 auto;
}
.ca72ea-burger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ca72ea-paper);
  margin: 2.5px 0;
  border-radius: 1px;
  transition: transform 0.22s var(--ca72ea-ease), width 0.22s var(--ca72ea-ease), opacity 0.18s;
}
.ca72ea-burger span:nth-child(2) { width: 12px; }
.ca72ea-burger.is-open span:nth-child(1) { transform: translateY(4.5px) rotate(45deg); }
.ca72ea-burger.is-open span:nth-child(2) { opacity: 0; }
.ca72ea-burger.is-open span:nth-child(3) { transform: translateY(-4.5px) rotate(-45deg); width: 18px; }

/* ---------- layered dropdown menu ---------- */
.ca72ea-menu {
  position: fixed;
  top: var(--ca72ea-header-h);
  left: 0;
  right: 0;
  margin: 0 auto;
  max-width: 430px;
  background: var(--ca72ea-veil);
  backdrop-filter: blur(9px);
  -webkit-backdrop-filter: blur(9px);
  border-bottom: 1px solid var(--ca72ea-line-strong);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s var(--ca72ea-ease);
  z-index: 110;
}
.ca72ea-menu.is-open { max-height: 480px; }

.ca72ea-menu-layer {
  padding: 10px 14px 8px;
  border-bottom: 1px solid var(--ca72ea-line);
  position: relative;
}
.ca72ea-menu-layer:last-child { border-bottom: 0; }
/* sliding entry indicator */
.ca72ea-menu-layer::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 12px;
  width: 0;
  height: 2px;
  background: var(--ca72ea-silver);
  transition: width 0.32s var(--ca72ea-ease);
}
.ca72ea-menu.is-open .ca72ea-menu-layer::before { width: 26px; }

.ca72ea-menu-label {
  margin: 0 0 6px 34px;
  font-family: var(--ca72ea-font-head);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ca72ea-mist);
}

.ca72ea-menu-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px 10px;
}
.ca72ea-menu-links a {
  display: block;
  min-height: 40px;
  padding: 9px 10px;
  border-left: 2px solid transparent;
  font-size: 14px;
  color: var(--ca72ea-paper);
  background: rgba(74, 74, 74, 0.22);
  border-radius: 0 3px 3px 0;
  transition: border-color 0.18s, background-color 0.18s, color 0.18s;
}
.ca72ea-menu-links a:hover,
.ca72ea-menu-links a[aria-current="page"] {
  border-left-color: var(--ca72ea-silver);
  background: rgba(192, 192, 192, 0.14);
  color: var(--ca72ea-silver);
}

/* ---------- main canvas ---------- */
.ca72ea-main {
  padding: var(--ca72ea-header-h) 0 calc(var(--ca72ea-bnav-h) + 26px);
}

.ca72ea-section {
  padding: 18px 14px 16px;
  border-top: 1px solid var(--ca72ea-line);
}

/* section kicker (overline) */
.ca72ea-kicker {
  display: inline-block;
  font-family: var(--ca72ea-font-head);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--ca72ea-mist);
  margin-bottom: 6px;
}

.ca72ea-h1 {
  font-size: clamp(26px, 8.4vw, 34px);
  font-weight: 700;
  color: var(--ca72ea-paper);
}

.ca72ea-h2 {
  font-size: clamp(17px, 5.4vw, 21px);
  font-weight: 600;
  color: var(--ca72ea-paper);
}

/* full-width primary CTA */
.ca72ea-cta {
  display: block;
  width: 100%;
  min-height: 48px;
  margin: 14px 0 4px;
  padding: 13px 16px;
  background: var(--ca72ea-paper);
  color: var(--ca72ea-ink);
  border-radius: 3px;
  font-family: var(--ca72ea-font-head);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-align: center;
  transition: background-color 0.18s var(--ca72ea-ease), transform 0.12s var(--ca72ea-ease);
}
.ca72ea-cta:hover { background: var(--ca72ea-silver); }
.ca72ea-cta:active { transform: scale(0.985); }

.ca72ea-note {
  color: var(--ca72ea-mist);
  font-size: 14.5px;
}

/* ---------- carousel ---------- */
.ca72ea-carousel {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--ca72ea-line);
  background: var(--ca72ea-graphite);
  touch-action: pan-y;
}
.ca72ea-track {
  display: flex;
  transition: transform 0.42s var(--ca72ea-ease);
  will-change: transform;
}
.ca72ea-slide {
  flex: 0 0 100%;
  width: 100%;
  display: block;
}
.ca72ea-slide img {
  width: 100%;
  aspect-ratio: 430 / 196;
  object-fit: cover;
}
.ca72ea-dots {
  position: absolute;
  bottom: 9px;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  gap: 7px;
}
.ca72ea-dot {
  width: 22px;
  height: 5px;
  border-radius: 2px;
  background: rgba(248, 248, 255, 0.35);
  transition: background-color 0.2s, width 0.2s var(--ca72ea-ease);
}
.ca72ea-dot.is-on {
  background: var(--ca72ea-paper);
  width: 30px;
}

/* ---------- glance strip (quick facts) ---------- */
.ca72ea-glance {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--ca72ea-line);
  border: 1px solid var(--ca72ea-line);
}
.ca72ea-glance li {
  background: rgba(74, 74, 74, 0.30);
  padding: 10px 12px;
}
.ca72ea-glance strong {
  display: block;
  font-family: var(--ca72ea-font-head);
  font-size: 16px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ca72ea-paper);
}
.ca72ea-glance span {
  display: block;
  font-size: 12.5px;
  color: var(--ca72ea-mist);
  line-height: 1.35;
  margin-top: 3px;
}

/* ---------- category header row ---------- */
.ca72ea-cathead {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 6px;
}
.ca72ea-count {
  flex: 0 0 auto;
  font-family: var(--ca72ea-font-head);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ca72ea-silver);
  border: 1px solid var(--ca72ea-line-strong);
  border-radius: 2px;
  padding: 3px 8px;
}

/* ---------- compact square game directory ---------- */
.ca72ea-gamegrid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px 6px;
  margin-top: 12px;
}
@media (min-width: 375px) {
  .ca72ea-gamegrid { grid-template-columns: repeat(5, 1fr); gap: 12px 7px; }
}

.ca72ea-game {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  min-height: var(--ca72ea-tap);
  border-radius: 3px;
  transition: transform 0.12s var(--ca72ea-ease), background-color 0.18s;
}
.ca72ea-game:active { transform: scale(0.94); }
.ca72ea-game img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 3px;
  border: 1px solid var(--ca72ea-line);
  background: var(--ca72ea-graphite);
  transition: border-color 0.18s;
}
.ca72ea-game:hover img { border-color: var(--ca72ea-silver); }
.ca72ea-game-name {
  font-size: 11px;
  line-height: 1.2;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  font-family: var(--ca72ea-font-head);
  font-weight: 500;
  color: var(--ca72ea-mist);
  text-align: center;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.ca72ea-game:hover .ca72ea-game-name { color: var(--ca72ea-paper); }

/* ---------- module: tricks list ---------- */
.ca72ea-tricks {
  list-style: none;
  counter-reset: ca72ea-trick;
  margin: 4px 0 0;
  padding: 0;
}
.ca72ea-tricks li {
  counter-increment: ca72ea-trick;
  position: relative;
  padding: 10px 0 10px 44px;
  border-bottom: 1px solid var(--ca72ea-line);
}
.ca72ea-tricks li:last-child { border-bottom: 0; }
.ca72ea-tricks li::before {
  content: counter(ca72ea-trick, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 10px;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  font-family: var(--ca72ea-font-head);
  font-size: 14px;
  font-weight: 600;
  color: var(--ca72ea-ink);
  background: var(--ca72ea-silver);
  border-radius: 3px;
}
.ca72ea-tricks li:nth-child(even)::before { background: var(--ca72ea-mist); }
.ca72ea-tricks strong {
  display: block;
  font-family: var(--ca72ea-font-head);
  font-weight: 600;
  font-size: 13.5px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ca72ea-paper);
  margin-bottom: 3px;
}

/* ---------- module: step rail ---------- */
.ca72ea-steps {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
}
.ca72ea-steps li {
  position: relative;
  padding: 8px 0 10px 34px;
}
.ca72ea-steps li::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 26px;
  bottom: -6px;
  width: 1px;
  background: var(--ca72ea-line-strong);
}
.ca72ea-steps li:last-child::before { display: none; }
.ca72ea-steps li::after {
  content: attr(data-n);
  position: absolute;
  left: 0;
  top: 6px;
  width: 23px;
  height: 23px;
  display: grid;
  place-items: center;
  font-family: var(--ca72ea-font-head);
  font-size: 12px;
  font-weight: 600;
  color: var(--ca72ea-paper);
  border: 1px solid var(--ca72ea-line-strong);
  border-radius: 50%;
  background: rgba(74, 74, 74, 0.4);
}
.ca72ea-steps strong {
  color: var(--ca72ea-paper);
  font-weight: 600;
}

/* ---------- module: rtp stat rows ---------- */
.ca72ea-stats {
  margin: 12px 0 0;
  border: 1px solid var(--ca72ea-line);
}
.ca72ea-stat {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 12px;
  border-bottom: 1px solid var(--ca72ea-line);
  background: rgba(74, 74, 74, 0.22);
}
.ca72ea-stat:last-child { border-bottom: 0; }
.ca72ea-stat b {
  flex: 0 0 auto;
  font-family: var(--ca72ea-font-head);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--ca72ea-silver);
  white-space: nowrap;
}
.ca72ea-stat span { font-size: 13px; color: var(--ca72ea-mist); text-align: right; }

/* ---------- module: recap checklist ---------- */
.ca72ea-recap {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--ca72ea-line);
  border: 1px solid var(--ca72ea-line);
}
.ca72ea-recap li {
  background: rgba(44, 62, 80, 0.85);
  padding: 8px 12px 8px 34px;
  position: relative;
  font-size: 14px;
  color: var(--ca72ea-mist);
}
.ca72ea-recap li::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 13px;
  width: 9px;
  height: 5px;
  border-left: 2px solid var(--ca72ea-silver);
  border-bottom: 2px solid var(--ca72ea-silver);
  transform: rotate(-45deg);
}

/* ---------- module: scenario answer ---------- */
.ca72ea-qa {
  border-left: 3px solid var(--ca72ea-silver);
  background: rgba(74, 74, 74, 0.26);
  padding: 12px 14px;
  margin-top: 10px;
}
.ca72ea-qa p { font-size: 14px; }
.ca72ea-qa-actions {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
}
.ca72ea-qa-actions li {
  padding: 6px 0 6px 20px;
  position: relative;
  font-size: 14px;
  color: var(--ca72ea-mist);
  border-top: 1px dashed var(--ca72ea-line);
}
.ca72ea-qa-actions li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 13px;
  width: 7px;
  height: 7px;
  border-radius: 1px;
  background: var(--ca72ea-silver);
}

/* ---------- extended footer ---------- */
.ca72ea-xfoot {
  border-top: 2px solid var(--ca72ea-line-strong);
  background: rgba(35, 48, 63, 0.6);
  padding: 20px 14px 18px;
}

/* two-column page directory */
.ca72ea-dir {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 12px;
}
.ca72ea-dir a {
  display: block;
  padding: 9px 10px;
  border: 1px solid var(--ca72ea-line);
  border-radius: 3px;
  background: rgba(74, 74, 74, 0.24);
  min-height: var(--ca72ea-tap);
  transition: border-color 0.18s, background-color 0.18s;
}
.ca72ea-dir a:hover { border-color: var(--ca72ea-silver); background: rgba(192, 192, 192, 0.10); }
.ca72ea-dir strong {
  display: block;
  font-family: var(--ca72ea-font-head);
  font-weight: 600;
  font-size: 12.5px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ca72ea-paper);
}
.ca72ea-dir span {
  display: block;
  font-size: 12px;
  color: var(--ca72ea-mist);
  line-height: 1.3;
  margin-top: 2px;
}

/* brand note inside extended footer */
.ca72ea-xbrand {
  display: flex;
  gap: 11px;
  align-items: flex-start;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--ca72ea-line);
}
.ca72ea-xbrand img {
  width: 42px;
  height: 42px;
  border-radius: 4px;
  border: 1px solid var(--ca72ea-line-strong);
  background: var(--ca72ea-graphite);
  flex: 0 0 auto;
}
.ca72ea-xbrand p { font-size: 13.5px; color: var(--ca72ea-mist); }

/* promotion grid: 6 actions */
.ca72ea-promos { margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--ca72ea-line); }
.ca72ea-promos-label {
  font-family: var(--ca72ea-font-head);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ca72ea-mist);
  margin-bottom: 8px;
}
.ca72ea-promo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.ca72ea-promo-btn {
  min-height: var(--ca72ea-tap);
  padding: 10px 8px;
  border: 1px solid var(--ca72ea-line-strong);
  border-radius: 3px;
  font-family: var(--ca72ea-font-head);
  font-weight: 500;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ca72ea-paper);
  text-align: center;
  transition: background-color 0.18s var(--ca72ea-ease), color 0.18s var(--ca72ea-ease), transform 0.12s var(--ca72ea-ease);
}
.ca72ea-promo-btn:nth-child(odd) { background: rgba(192, 192, 192, 0.12); }
.ca72ea-promo-btn:hover { background: rgba(192, 192, 192, 0.22); }
.ca72ea-promo-btn:active { transform: scale(0.97); }
.ca72ea-promo-note { margin: 9px 0 0; font-size: 12px; color: var(--ca72ea-mist); }

.ca72ea-disclaimer {
  margin: 18px 0 0;
  padding: 11px 12px;
  border-left: 3px solid var(--ca72ea-mist);
  background: rgba(74, 74, 74, 0.30);
  font-size: 12.5px;
  line-height: 1.45;
  color: var(--ca72ea-mist);
}

/* ---------- common footer ---------- */
.ca72ea-foot {
  border-top: 1px solid var(--ca72ea-line);
  padding: 14px;
  text-align: center;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ca72ea-mist);
  background: rgba(35, 48, 63, 0.7);
}
.ca72ea-foot b {
  font-family: var(--ca72ea-font-head);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ca72ea-silver);
}

/* ---------- layered bottom navigation ---------- */
.ca72ea-bnav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  margin: 0 auto;
  max-width: 430px;
  background: var(--ca72ea-veil);
  backdrop-filter: blur(9px);
  -webkit-backdrop-filter: blur(9px);
  border-top: 1px solid var(--ca72ea-line-strong);
  padding-bottom: env(safe-area-inset-bottom, 0);
  z-index: 130;
}
/* top indicator layer of the bar */
.ca72ea-bnav::before {
  content: "";
  display: block;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--ca72ea-line-strong), transparent);
}

.ca72ea-bnav-list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  height: var(--ca72ea-bnav-h);
  margin: 0;
  padding: 0;
  list-style: none;
}

.ca72ea-bn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  min-height: var(--ca72ea-tap);
  color: var(--ca72ea-mist);
  position: relative;
  transition: color 0.18s var(--ca72ea-ease);
}
/* sliding active indicator dot */
.ca72ea-bn::after {
  content: "";
  position: absolute;
  top: 0;
  width: 26px;
  height: 2px;
  background: transparent;
  border-radius: 0 0 2px 2px;
  transition: background-color 0.22s var(--ca72ea-ease);
}
.ca72ea-bn:hover { color: var(--ca72ea-paper); }
.ca72ea-bn:hover::after { background: var(--ca72ea-line-strong); }

/* active state: contrast inversion */
.ca72ea-bn.is-active {
  color: var(--ca72ea-ink);
  background: var(--ca72ea-paper);
  margin: 6px 4px 6px;
  border-radius: 3px;
  min-height: calc(var(--ca72ea-bnav-h) - 12px);
}
.ca72ea-bn.is-active::after { background: var(--ca72ea-silver); }

/* two-tone icons */
.ca72ea-bn svg { width: 22px; height: 22px; display: block; }
.ca72ea-ic-a { stroke: currentColor; }
.ca72ea-ic-b { fill: var(--ca72ea-silver); }
.ca72ea-bn:hover .ca72ea-ic-b { fill: var(--ca72ea-paper); }
.ca72ea-bn.is-active .ca72ea-ic-a { stroke: var(--ca72ea-ink); }
.ca72ea-bn.is-active .ca72ea-ic-b { fill: var(--ca72ea-graphite); }

.ca72ea-bn-label {
  font-family: var(--ca72ea-font-head);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* ---------- wide-screen phone frame ---------- */
@media (min-width: 430px) {
  body {
    box-shadow: 0 0 60px rgba(0, 0, 0, 0.5);
  }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
  .ca72ea-track { transition: none; }
}