/* ============================================================
   responsive-164c45-surface.css
   2222betappdownload.click — mobile-first base styles
   Canvas: 320-430px, centered phone frame on wide screens
   Class / variable prefix: mobile164c4-
   Palette: #273746 deep bg | #F8F8FF paper text | #ADFF2F lime
            #95A5A6 mist | #778899 slate
   ============================================================ */

:root {
  --mobile164c4-ink: #273746;
  --mobile164c4-ink-deep: #1d2934;
  --mobile164c4-ink-floor: #16202b;
  --mobile164c4-ink-soft: #31465a;
  --mobile164c4-paper: #F8F8FF;
  --mobile164c4-paper-dim: rgba(248, 248, 255, 0.86);
  --mobile164c4-paper-faint: rgba(248, 248, 255, 0.66);
  --mobile164c4-mist: #95A5A6;
  --mobile164c4-slate: #778899;
  --mobile164c4-lime: #ADFF2F;
  --mobile164c4-lime-soft: rgba(173, 255, 47, 0.16);
  --mobile164c4-line: rgba(149, 165, 166, 0.26);
  --mobile164c4-line-faint: rgba(149, 165, 166, 0.14);
  --mobile164c4-head-font: 'Hind Siliguri', 'Noto Sans Bengali', 'SolaimanLipi', system-ui, sans-serif;
  --mobile164c4-body-font: 'Noto Sans Bengali', 'Hind Siliguri', 'SolaimanLipi', system-ui, sans-serif;
  --mobile164c4-radius-sm: 7px;
  --mobile164c4-radius: 10px;
  --mobile164c4-radius-lg: 14px;
  --mobile164c4-topbar-h: 60px;
  --mobile164c4-bnav-h: 62px;
  --mobile164c4-shell-w: 430px;
  --mobile164c4-ease: 160ms ease;
}

/* ---------- reset & base ---------- */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #0f171f;
  color: var(--mobile164c4-paper);
  font-family: var(--mobile164c4-body-font);
  font-size: 14px;
  line-height: 1.75;
  overflow-x: hidden;
}

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

button {
  font-family: inherit;
  cursor: pointer;
}

a {
  color: var(--mobile164c4-paper);
  text-decoration: none;
}

h1, h2, h3, p, ul, ol, dl, dd, figure {
  margin: 0;
}

ul, ol {
  padding: 0;
  list-style: none;
}

:focus-visible {
  outline: 2px solid var(--mobile164c4-lime);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- phone canvas ---------- */

.mobile164c4-shell {
  position: relative;
  width: 100%;
  max-width: var(--mobile164c4-shell-w);
  margin-inline: auto;
  min-height: 100vh;
  background: var(--mobile164c4-ink);
  overflow-x: clip;
}

@media (min-width: 480px) {
  .mobile164c4-shell {
    border-inline: 1px solid var(--mobile164c4-line);
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.5);
  }
}

/* ---------- skip link ---------- */

.mobile164c4-skip {
  position: absolute;
  top: -48px;
  left: 10px;
  z-index: 90;
  padding: 8px 14px;
  border-radius: var(--mobile164c4-radius-sm);
  background: var(--mobile164c4-lime);
  color: var(--mobile164c4-ink-deep);
  font-weight: 700;
  font-size: 12px;
  transition: top var(--mobile164c4-ease);
}

.mobile164c4-skip:focus {
  top: 6px;
}

/* ---------- top brand bar ---------- */

.mobile164c4-topbar {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: var(--mobile164c4-shell-w);
  height: var(--mobile164c4-topbar-h);
  z-index: 70;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 0 10px;
  background: linear-gradient(180deg, #22303d 0%, var(--mobile164c4-ink-deep) 100%);
  border-bottom: 1px solid var(--mobile164c4-line);
}

.mobile164c4-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.mobile164c4-logo-tile {
  flex: 0 0 auto;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: var(--mobile164c4-lime-soft);
  border: 1px solid var(--mobile164c4-line);
}

.mobile164c4-logo {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  object-fit: cover;
}

.mobile164c4-brand-name {
  display: block;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-family: var(--mobile164c4-head-font);
  font-weight: 700;
  font-size: 14.5px;
  letter-spacing: 0.2px;
  color: var(--mobile164c4-paper);
}

.mobile164c4-brand-name b {
  color: var(--mobile164c4-lime);
  font-weight: 700;
}

.mobile164c4-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 0 0 auto;
}

/* ---------- buttons (solid primary + outlined secondary) ---------- */

.mobile164c4-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 14px;
  border-radius: var(--mobile164c4-radius-sm);
  font-family: var(--mobile164c4-head-font);
  font-weight: 700;
  font-size: 12.5px;
  line-height: 1;
  border: 1px solid transparent;
  transition: transform var(--mobile164c4-ease), filter var(--mobile164c4-ease), background var(--mobile164c4-ease);
}

.mobile164c4-btn:active {
  transform: scale(0.94);
}

.mobile164c4-btn-solid {
  background: var(--mobile164c4-lime);
  color: #22303d;
}

.mobile164c4-btn-solid:active {
  filter: brightness(0.92);
}

.mobile164c4-btn-ghost {
  background: transparent;
  color: var(--mobile164c4-paper);
  border-color: var(--mobile164c4-lime);
}

.mobile164c4-btn-sm {
  min-height: 38px;
  padding: 0 12px;
  font-size: 12px;
}

/* menu trigger */

.mobile164c4-menu-btn {
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  background: transparent;
  border: 1px solid var(--mobile164c4-line);
  border-radius: var(--mobile164c4-radius-sm);
  transition: transform var(--mobile164c4-ease), border-color var(--mobile164c4-ease);
}

.mobile164c4-menu-btn:active {
  transform: scale(0.92);
}

.mobile164c4-menu-bars,
.mobile164c4-menu-bars::before,
.mobile164c4-menu-bars::after {
  content: "";
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--mobile164c4-paper);
  transition: transform var(--mobile164c4-ease), opacity var(--mobile164c4-ease);
}

.mobile164c4-menu-bars::before {
  transform: translateY(-6px);
}

.mobile164c4-menu-bars::after {
  transform: translateY(4px);
}

.mobile164c4-menu-btn-open .mobile164c4-menu-bars {
  background: transparent;
}

.mobile164c4-menu-btn-open .mobile164c4-menu-bars::before {
  transform: translateY(-1px) rotate(45deg);
}

.mobile164c4-menu-btn-open .mobile164c4-menu-bars::after {
  transform: translateY(1px) rotate(-45deg);
}

/* ---------- layered dropdown menu ---------- */

.mobile164c4-veil {
  position: fixed;
  top: var(--mobile164c4-topbar-h);
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: var(--mobile164c4-shell-w);
  z-index: 55;
  background: rgba(10, 15, 20, 0.6);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--mobile164c4-ease);
}

.mobile164c4-veil-show {
  opacity: 1;
  pointer-events: auto;
}

.mobile164c4-drawer {
  position: fixed;
  top: var(--mobile164c4-topbar-h);
  left: 50%;
  transform: translateX(-50%) translateY(-10px);
  width: 100%;
  max-width: var(--mobile164c4-shell-w);
  z-index: 60;
  max-height: calc(100vh - var(--mobile164c4-topbar-h));
  overflow-y: auto;
  background: var(--mobile164c4-ink-deep);
  border-bottom: 1px solid var(--mobile164c4-line);
  padding: 6px 14px 16px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--mobile164c4-ease), transform var(--mobile164c4-ease);
}

.mobile164c4-drawer-open {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.mobile164c4-drawer-cap {
  font-family: var(--mobile164c4-head-font);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--mobile164c4-mist);
  padding: 12px 2px 4px;
}

.mobile164c4-drawer-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  min-height: 44px;
  padding: 10px 6px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--mobile164c4-paper-dim);
  border-bottom: 1px solid var(--mobile164c4-line-faint);
  transition: background var(--mobile164c4-ease), transform var(--mobile164c4-ease);
}

.mobile164c4-drawer-link:active {
  transform: translateX(2px);
}

.mobile164c4-drawer-link::after {
  content: "";
  width: 6px;
  height: 6px;
  border-top: 1.6px solid var(--mobile164c4-slate);
  border-right: 1.6px solid var(--mobile164c4-slate);
  transform: rotate(45deg);
  flex: 0 0 auto;
}

.mobile164c4-drawer-foot {
  display: flex;
  gap: 8px;
  margin-top: 14px;
}

.mobile164c4-drawer-foot .mobile164c4-btn {
  flex: 1 1 0;
}

/* ---------- main flow ---------- */

.mobile164c4-main {
  padding: calc(var(--mobile164c4-topbar-h) + 14px) 12px calc(var(--mobile164c4-bnav-h) + 30px);
}

.mobile164c4-sec {
  margin-top: 24px;
}

/* ---------- hero ---------- */

.mobile164c4-hero {
  margin-top: 4px;
  padding: 14px 2px 2px;
}

.mobile164c4-hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.6px;
  color: var(--mobile164c4-mist);
  border: 1px solid var(--mobile164c4-line);
  border-radius: 999px;
  padding: 4px 10px;
  margin-bottom: 10px;
}

.mobile164c4-hero-kicker::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mobile164c4-lime);
}

.mobile164c4-hero-title {
  font-family: var(--mobile164c4-head-font);
  font-weight: 700;
  font-size: clamp(23px, 6.8vw, 29px);
  line-height: 1.35;
  color: var(--mobile164c4-paper);
}

.mobile164c4-hero-title .mobile164c4-mark {
  color: var(--mobile164c4-lime);
  box-shadow: inset 0 -8px 0 var(--mobile164c4-lime-soft);
}

.mobile164c4-hero-lead {
  margin-top: 10px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--mobile164c4-paper-dim);
}

.mobile164c4-hero-cta {
  display: flex;
  gap: 8px;
  margin-top: 14px;
}

.mobile164c4-hero-cta .mobile164c4-btn {
  flex: 1 1 0;
}

/* ---------- quick fact strip ---------- */

.mobile164c4-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
  margin-top: 16px;
}

.mobile164c4-fact {
  background: var(--mobile164c4-ink-deep);
  border: 1px solid var(--mobile164c4-line-faint);
  border-radius: var(--mobile164c4-radius-sm);
  padding: 8px 6px;
  text-align: center;
}

.mobile164c4-fact b {
  display: block;
  font-family: var(--mobile164c4-head-font);
  font-size: 15px;
  color: var(--mobile164c4-lime);
}

.mobile164c4-fact span {
  display: block;
  font-size: 10.5px;
  color: var(--mobile164c4-mist);
  line-height: 1.5;
}

/* ---------- carousel ---------- */

.mobile164c4-caro {
  margin-top: 18px;
}

.mobile164c4-caro-viewport {
  position: relative;
  border-radius: var(--mobile164c4-radius-lg);
  overflow: hidden;
  border: 1px solid var(--mobile164c4-line);
  background: var(--mobile164c4-ink-deep);
}

.mobile164c4-caro-track {
  display: flex;
  transition: transform 280ms ease;
  will-change: transform;
}

.mobile164c4-caro-slide {
  position: relative;
  flex: 0 0 100%;
  width: 100%;
  padding: 0;
  border: 0;
  background: var(--mobile164c4-ink-deep);
  aspect-ratio: 2.15 / 1;
  min-height: 150px;
}

.mobile164c4-caro-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.mobile164c4-caro-cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 22px 12px 9px;
  background: linear-gradient(180deg, rgba(22, 32, 43, 0) 0%, rgba(22, 32, 43, 0.92) 78%);
  text-align: left;
  font-family: var(--mobile164c4-head-font);
  font-weight: 700;
  font-size: 13px;
  color: var(--mobile164c4-paper);
}

.mobile164c4-caro-cap small {
  display: block;
  font-family: var(--mobile164c4-body-font);
  font-weight: 400;
  font-size: 11px;
  color: var(--mobile164c4-lime);
}

.mobile164c4-caro-dots {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 8px;
}

.mobile164c4-caro-dot {
  width: 26px;
  height: 22px;
  padding: 0;
  display: grid;
  place-items: center;
  background: transparent;
  border: 0;
}

.mobile164c4-caro-dot::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--mobile164c4-slate);
  transition: width var(--mobile164c4-ease), background var(--mobile164c4-ease);
}

.mobile164c4-caro-dot:active::before {
  transform: scale(0.8);
}

.mobile164c4-caro-dot-on::before {
  width: 20px;
  background: var(--mobile164c4-lime);
}

/* ---------- section headings (poster style) ---------- */

.mobile164c4-h2 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mobile164c4-head-font);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.5;
  color: var(--mobile164c4-paper);
}

.mobile164c4-h2::before {
  content: "";
  flex: 0 0 auto;
  width: 4px;
  height: 18px;
  border-radius: 3px;
  background: var(--mobile164c4-lime);
}

.mobile164c4-h3 {
  font-family: var(--mobile164c4-head-font);
  font-weight: 700;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--mobile164c4-paper);
}

.mobile164c4-p {
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--mobile164c4-paper-dim);
}

.mobile164c4-p a,
.mobile164c4-inline-link {
  color: var(--mobile164c4-lime);
  text-decoration: underline;
  text-decoration-color: rgba(173, 255, 47, 0.5);
  text-underline-offset: 3px;
}

/* ---------- direct answer block ---------- */

.mobile164c4-answer {
  margin-top: 10px;
  background: var(--mobile164c4-ink-deep);
  border: 1px solid var(--mobile164c4-line-faint);
  border-left: 4px solid var(--mobile164c4-lime);
  border-radius: var(--mobile164c4-radius);
  padding: 12px 12px 13px;
}

/* ---------- game grid (image card + bottom name bar) ---------- */

.mobile164c4-games {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px 6px;
  margin-top: 12px;
}

@media (min-width: 400px) {
  .mobile164c4-games {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 12px 7px;
  }
}

.mobile164c4-gcard {
  display: flex;
  flex-direction: column;
  padding: 0;
  border: 1px solid var(--mobile164c4-line-faint);
  border-radius: var(--mobile164c4-radius);
  background: var(--mobile164c4-ink-soft);
  overflow: hidden;
  text-align: center;
  transition: transform var(--mobile164c4-ease), border-color var(--mobile164c4-ease);
}

.mobile164c4-gcard:active {
  transform: scale(0.93);
  border-color: var(--mobile164c4-lime);
}

.mobile164c4-gcard-img {
  display: block;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--mobile164c4-ink-deep);
}

.mobile164c4-gcard-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.mobile164c4-gcard-name {
  display: block;
  padding: 4px 3px 5px;
  min-height: 26px;
  font-size: 10.5px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--mobile164c4-paper-dim);
  background: rgba(22, 32, 43, 0.85);
  border-top: 1px solid var(--mobile164c4-line-faint);
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.mobile164c4-cat-lead {
  margin-top: 6px;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--mobile164c4-paper-faint);
}

/* ---------- feature comparison rows ---------- */

.mobile164c4-feats {
  margin-top: 10px;
  border: 1px solid var(--mobile164c4-line-faint);
  border-radius: var(--mobile164c4-radius);
  overflow: hidden;
}

.mobile164c4-feat {
  display: grid;
  grid-template-columns: minmax(96px, 34%) minmax(0, 1fr);
  gap: 8px;
  padding: 10px 11px;
  background: var(--mobile164c4-ink-deep);
  border-bottom: 1px dashed var(--mobile164c4-line);
}

.mobile164c4-feat:last-child {
  border-bottom: 0;
}

.mobile164c4-feat dt {
  font-family: var(--mobile164c4-head-font);
  font-weight: 700;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--mobile164c4-lime);
}

.mobile164c4-feat dd {
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mobile164c4-paper-dim);
}

/* ---------- numbered tricks ---------- */

.mobile164c4-tricks {
  margin-top: 10px;
  counter-reset: mobile164c4-trick;
}

.mobile164c4-trick {
  display: flex;
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px solid var(--mobile164c4-line-faint);
  counter-increment: mobile164c4-trick;
}

.mobile164c4-trick::before {
  content: counter(mobile164c4-trick);
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--mobile164c4-lime);
  color: #22303d;
  font-family: var(--mobile164c4-head-font);
  font-weight: 700;
  font-size: 12px;
}

.mobile164c4-trick p {
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--mobile164c4-paper-dim);
}

.mobile164c4-trick b {
  color: var(--mobile164c4-paper);
}

/* ---------- promo rows ---------- */

.mobile164c4-offers {
  margin-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mobile164c4-offer {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 11px;
  background: var(--mobile164c4-ink-deep);
  border: 1px solid var(--mobile164c4-line-faint);
  border-radius: var(--mobile164c4-radius);
}

.mobile164c4-offer-dot {
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--mobile164c4-lime);
  box-shadow: 0 0 0 4px var(--mobile164c4-lime-soft);
}

.mobile164c4-offer-txt {
  min-width: 0;
  flex: 1 1 auto;
}

.mobile164c4-offer-txt b {
  display: block;
  font-family: var(--mobile164c4-head-font);
  font-size: 13px;
  color: var(--mobile164c4-paper);
}

.mobile164c4-offer-txt span {
  display: block;
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--mobile164c4-paper-faint);
}

/* ---------- install steps ---------- */

.mobile164c4-steps {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
}

.mobile164c4-step {
  background: var(--mobile164c4-ink-deep);
  border: 1px solid var(--mobile164c4-line-faint);
  border-radius: var(--mobile164c4-radius);
  padding: 9px 8px;
}

.mobile164c4-step i {
  font-style: normal;
  font-family: var(--mobile164c4-head-font);
  font-weight: 700;
  font-size: 11px;
  color: #22303d;
  background: var(--mobile164c4-lime);
  border-radius: 999px;
  padding: 1px 8px;
}

.mobile164c4-step b {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  color: var(--mobile164c4-paper);
}

.mobile164c4-step span {
  display: block;
  margin-top: 3px;
  font-size: 11px;
  line-height: 1.6;
  color: var(--mobile164c4-paper-faint);
}

/* ---------- milestone track ---------- */

.mobile164c4-miles {
  margin-top: 12px;
  position: relative;
  padding-left: 20px;
}

.mobile164c4-miles::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 6px;
  bottom: 8px;
  width: 2px;
  border-radius: 2px;
  background: var(--mobile164c4-line);
}

.mobile164c4-mile {
  position: relative;
  padding: 6px 0 12px;
}

.mobile164c4-mile::before {
  content: "";
  position: absolute;
  left: -20px;
  top: 10px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--mobile164c4-ink);
  border: 3px solid var(--mobile164c4-lime);
}

.mobile164c4-mile b {
  display: block;
  font-family: var(--mobile164c4-head-font);
  font-size: 13px;
  color: var(--mobile164c4-paper);
}

.mobile164c4-mile span {
  display: block;
  font-size: 12px;
  line-height: 1.7;
  color: var(--mobile164c4-paper-faint);
}

/* ---------- extended footer (directory > brand > promotions > disclaimer) ---------- */

.mobile164c4-xf {
  margin-top: 30px;
  padding: 16px 13px 6px;
  background: var(--mobile164c4-ink-deep);
  border: 1px solid var(--mobile164c4-line-faint);
  border-radius: var(--mobile164c4-radius-lg);
}

.mobile164c4-xf-cap {
  font-family: var(--mobile164c4-head-font);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--mobile164c4-mist);
  margin-bottom: 8px;
}

.mobile164c4-xf-cols {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px 14px;
}

@media (min-width: 400px) {
  .mobile164c4-xf-cols {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.mobile164c4-xf-col h3 {
  font-family: var(--mobile164c4-head-font);
  font-size: 11.5px;
  font-weight: 700;
  color: var(--mobile164c4-paper-faint);
  margin-bottom: 4px;
}

.mobile164c4-xf-col a {
  display: block;
  padding: 5px 0;
  font-size: 12px;
  line-height: 1.55;
  color: var(--mobile164c4-paper-dim);
  text-decoration: underline;
  text-decoration-color: var(--mobile164c4-line);
  text-underline-offset: 3px;
}

.mobile164c4-xf-brand {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--mobile164c4-line-faint);
  font-size: 12px;
  line-height: 1.8;
  color: var(--mobile164c4-paper-faint);
}

.mobile164c4-xf-promos {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--mobile164c4-line-faint);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.mobile164c4-xf-promo {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 44px;
  padding: 6px 0;
  border-bottom: 1px dashed var(--mobile164c4-line-faint);
}

.mobile164c4-xf-promo:last-of-type {
  border-bottom: 0;
}

.mobile164c4-xf-promo span {
  font-size: 12.5px;
  color: var(--mobile164c4-paper-dim);
}

.mobile164c4-xf-promo span b {
  display: block;
  font-family: var(--mobile164c4-head-font);
  font-size: 13px;
  color: var(--mobile164c4-paper);
}

.mobile164c4-xf-note {
  margin-top: 14px;
  padding-top: 10px;
  border-top: 1px solid var(--mobile164c4-line-faint);
  font-size: 11px;
  line-height: 1.75;
  color: var(--mobile164c4-mist);
}

/* ---------- copyright ---------- */

.mobile164c4-foot {
  margin-top: 14px;
  padding: 12px 0 6px;
  border-top: 1px solid var(--mobile164c4-line-faint);
  text-align: center;
}

.mobile164c4-foot p {
  font-size: 11.5px;
  color: var(--mobile164c4-mist);
}

/* ---------- fixed bottom nav (5 roles) ---------- */

.mobile164c4-bnav {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: var(--mobile164c4-shell-w);
  height: calc(var(--mobile164c4-bnav-h) + env(safe-area-inset-bottom, 0px));
  padding-bottom: env(safe-area-inset-bottom, 0px);
  z-index: 70;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  background: var(--mobile164c4-ink-floor);
  border-top: 1px solid var(--mobile164c4-line);
}

.mobile164c4-bnav-link {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  min-height: var(--mobile164c4-bnav-h);
  background: transparent;
  border: 0;
  padding: 0;
  transition: transform var(--mobile164c4-ease);
}

.mobile164c4-bnav-link:active {
  transform: scale(0.92);
}

.mobile164c4-bnav-link span {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.3px;
  color: var(--mobile164c4-mist);
  transition: color var(--mobile164c4-ease);
}

/* dual-tone role icons: tone b changes fill when active */

.mobile164c4-ico-a {
  fill: var(--mobile164c4-lime);
  transition: fill var(--mobile164c4-ease);
}

.mobile164c4-ico-b {
  fill: var(--mobile164c4-mist);
  transition: fill var(--mobile164c4-ease);
}

.mobile164c4-bnav-on .mobile164c4-ico-b {
  fill: var(--mobile164c4-lime);
}

.mobile164c4-bnav-on span {
  color: var(--mobile164c4-lime);
}

.mobile164c4-bnav-on::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 26px;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: var(--mobile164c4-lime);
}

/* ---------- help-page comparison, FAQ and feature map ---------- */

.mobile164c4-faq {
  margin-top: 10px;
  display: grid;
  gap: 7px;
}

.mobile164c4-faq details {
  background: var(--mobile164c4-ink-deep);
  border: 1px solid var(--mobile164c4-line-faint);
  border-radius: var(--mobile164c4-radius);
  overflow: hidden;
}

.mobile164c4-faq summary {
  position: relative;
  padding: 11px 34px 11px 12px;
  font-family: var(--mobile164c4-head-font);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--mobile164c4-paper);
  cursor: pointer;
  list-style: none;
}

.mobile164c4-faq summary::-webkit-details-marker {
  display: none;
}

.mobile164c4-faq summary::after {
  content: "+";
  position: absolute;
  top: 8px;
  right: 12px;
  color: var(--mobile164c4-lime);
  font-size: 18px;
  font-weight: 400;
}

.mobile164c4-faq details[open] summary::after {
  content: "−";
}

.mobile164c4-faq details p {
  padding: 0 12px 12px;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--mobile164c4-paper-dim);
}

.mobile164c4-checklist .mobile164c4-check::before {
  background: var(--mobile164c4-slate);
  color: var(--mobile164c4-paper);
}

.mobile164c4-feature-map,
.mobile164c4-panel-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 12px;
}

.mobile164c4-feature-card,
.mobile164c4-panel {
  min-width: 0;
  padding: 11px 10px 12px;
  background: var(--mobile164c4-ink-deep);
  border: 1px solid var(--mobile164c4-line-faint);
  border-radius: var(--mobile164c4-radius);
}

.mobile164c4-feature-card:last-child {
  grid-column: 1 / -1;
}

.mobile164c4-feature-no {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 999px;
  background: var(--mobile164c4-lime);
  color: var(--mobile164c4-ink-deep);
  font-family: var(--mobile164c4-head-font);
  font-size: 11px;
  font-weight: 700;
  line-height: 1.4;
}

.mobile164c4-feature-card .mobile164c4-h3,
.mobile164c4-panel .mobile164c4-h3 {
  margin-top: 7px;
}

.mobile164c4-feature-card .mobile164c4-p,
.mobile164c4-panel .mobile164c4-p {
  margin-top: 4px;
  font-size: 12px;
  line-height: 1.7;
}

/* ---------- motion preferences ---------- */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}