/* ==========================================================================
   World Cup Qualifiers — visuals-responsive-80c521.css
   Mobile-first phone canvas: 320px → 430px (desktop keeps the same canvas
   centered). All classes and custom properties carry the mobilec521b- prefix.
   Palette: #262626 ink / #ECF0F1 mist / #778899 steel / #FFFFFF pure
   Direction: technical headings, near-square corners, pure-image game cards,
   scene-branch rhythm, short-distance transitions, compact icon+text CTAs.
   ========================================================================== */

:root {
  --mobilec521b-ink: #262626;
  --mobilec521b-ink-deep: #1c1c1c;
  --mobilec521b-ink-raise: #2e2e2e;
  --mobilec521b-mist: #ecf0f1;
  --mobilec521b-steel: #778899;
  --mobilec521b-pure: #ffffff;
  --mobilec521b-line: rgba(236, 240, 241, 0.14);
  --mobilec521b-line-strong: rgba(236, 240, 241, 0.32);
  --mobilec521b-tile: rgba(236, 240, 241, 0.05);
  --mobilec521b-tile-hover: rgba(236, 240, 241, 0.11);
  --mobilec521b-faint: rgba(236, 240, 241, 0.74);
  --mobilec521b-dim: rgba(236, 240, 241, 0.52);
  --mobilec521b-radius: 3px;
  --mobilec521b-radius-tight: 2px;
  --mobilec521b-head-h: 60px;
  --mobilec521b-dock-h: 62px;
  --mobilec521b-font-head: "Roboto Condensed", "Avenir Next Condensed",
    "Helvetica Neue Condensed", "Arial Narrow", system-ui, sans-serif;
  --mobilec521b-font-body: "Segoe UI", system-ui, -apple-system, Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --mobilec521b-ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --mobilec521b-move: 220ms;
}

/* ---------------------------------------------------------------- base ---- */

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: #141414;
  color: var(--mobilec521b-mist);
  font-family: var(--mobilec521b-font-body);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

a {
  color: var(--mobilec521b-mist);
  text-decoration: none;
}

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

h1,
h2,
h3,
h4,
p {
  margin: 0;
}

svg {
  display: block;
}

:focus-visible {
  outline: 2px solid var(--mobilec521b-pure);
  outline-offset: 2px;
}

::selection {
  background: var(--mobilec521b-mist);
  color: var(--mobilec521b-ink);
}

.mobilec521b-sr {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------- shell ---- */
/* The phone canvas: capped at 430px and centered on any wider screen. */

.mobilec521b-shell {
  position: relative;
  width: 100%;
  max-width: 430px;
  margin: 0 auto;
  min-height: 100vh;
  min-height: 100dvh;
  background:
    radial-gradient(120% 52% at 50% 0%, rgba(236, 240, 241, 0.05), transparent 60%),
    linear-gradient(180deg, #2a2a2a 0%, var(--mobilec521b-ink) 34%, #222222 100%);
}

/* -------------------------------------------------------------- topbar ---- */
/* Edge-aligned functional header: brand flush left, actions flush right. */

.mobilec521b-topbar {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 430px;
  height: var(--mobilec521b-head-h);
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 10px;
  background: rgba(30, 30, 30, 0.94);
  border-bottom: 1px solid var(--mobilec521b-line);
  z-index: 80;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.mobilec521b-brand {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-right: auto;
  min-width: 0;
}

.mobilec521b-brand-logo {
  width: 32px;
  height: 32px;
  flex: 0 0 auto;
  border: 1px solid var(--mobilec521b-line-strong);
  border-radius: var(--mobilec521b-radius);
  background: var(--mobilec521b-pure);
  padding: 2px;
  object-fit: contain;
  transition: border-color var(--mobilec521b-move) var(--mobilec521b-ease);
}

.mobilec521b-brand:hover .mobilec521b-brand-logo,
.mobilec521b-brand:focus-visible .mobilec521b-brand-logo {
  border-color: var(--mobilec521b-pure);
}

/* Site name lockup: two stacked condensed lines, pure technical mark. */
.mobilec521b-brand-name {
  display: grid;
  gap: 1px;
  font-family: var(--mobilec521b-font-head);
  font-size: 12px;
  line-height: 1.05;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mobilec521b-mist);
  white-space: nowrap;
}

.mobilec521b-brand-name span:last-child {
  color: var(--mobilec521b-steel);
}

/* Action cluster: compact icon+text buttons, 44px touch lanes. */
.mobilec521b-actions {
  display: flex;
  align-items: center;
  gap: 5px;
}

.mobilec521b-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  min-height: 44px;
  padding: 0 10px;
  font-family: var(--mobilec521b-font-head);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  border-radius: var(--mobilec521b-radius);
  transition: transform 160ms var(--mobilec521b-ease),
    background-color 160ms var(--mobilec521b-ease),
    border-color 160ms var(--mobilec521b-ease);
}

.mobilec521b-btn svg {
  width: 13px;
  height: 13px;
  flex: 0 0 auto;
}

.mobilec521b-btn--cta {
  background: var(--mobilec521b-pure);
  color: var(--mobilec521b-ink);
  border: 1px solid var(--mobilec521b-pure);
}

.mobilec521b-btn--cta:active {
  transform: translateY(1px);
  background: #dfe5e7;
}

.mobilec521b-btn--ghost {
  background: transparent;
  color: var(--mobilec521b-mist);
  border: 1px solid var(--mobilec521b-line-strong);
}

.mobilec521b-btn--ghost:active {
  transform: translateY(1px);
  background: var(--mobilec521b-tile);
}

.mobilec521b-menu-btn {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--mobilec521b-line);
  border-radius: var(--mobilec521b-radius);
  color: var(--mobilec521b-mist);
  transition: border-color 160ms var(--mobilec521b-ease),
    background-color 160ms var(--mobilec521b-ease);
}

.mobilec521b-menu-btn svg {
  width: 18px;
  height: 18px;
}

.mobilec521b-menu-btn:active,
.mobilec521b-menu-btn[aria-expanded="true"] {
  border-color: var(--mobilec521b-pure);
  background: var(--mobilec521b-tile-hover);
}

/* Menu glyph morphs toward a close mark while the sheet is up. */
.mobilec521b-menu-btn .mobilec521b-menu-mid {
  transition: opacity 160ms var(--mobilec521b-ease);
}

.mobilec521b-menu-btn[aria-expanded="true"] .mobilec521b-menu-mid {
  opacity: 0;
}

/* --------------------------------------------------- scrim + route sheet ---- */

.mobilec521b-scrim {
  position: fixed;
  inset: 0;
  background: rgba(12, 12, 12, 0.62);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--mobilec521b-move) var(--mobilec521b-ease);
  z-index: 74;
}

.mobilec521b-scrim.mobilec521b-is-on {
  opacity: 1;
  pointer-events: auto;
}

/* Slide-up route panel docking just above the icon rack. */
.mobilec521b-sheet {
  position: fixed;
  bottom: calc(var(--mobilec521b-dock-h) + env(safe-area-inset-bottom, 0px));
  left: 50%;
  width: 100%;
  max-width: 430px;
  max-height: calc(100vh - var(--mobilec521b-head-h) - var(--mobilec521b-dock-h) - 26px);
  max-height: calc(100dvh - var(--mobilec521b-head-h) - var(--mobilec521b-dock-h) - 26px);
  overflow-y: auto;
  transform: translate(-50%, calc(100% + 18px));
  background: linear-gradient(180deg, #232323, #1e1e1e);
  border: 1px solid var(--mobilec521b-line);
  border-bottom: 0;
  border-radius: var(--mobilec521b-radius) var(--mobilec521b-radius) 0 0;
  padding: 12px 12px 16px;
  z-index: 76;
  transition: transform 280ms var(--mobilec521b-ease);
}

.mobilec521b-sheet {
  visibility: hidden;
}

.mobilec521b-sheet.mobilec521b-is-open {
  visibility: visible;
  transform: translate(-50%, 0);
}

@media (max-width: 359px) {
  .mobilec521b-topbar { padding: 0 6px; gap: 4px; }
  .mobilec521b-brand { gap: 4px; }
  .mobilec521b-brand-name { font-size: 10px; letter-spacing: 0.09em; }
  .mobilec521b-actions { gap: 3px; }
  .mobilec521b-topbar .mobilec521b-btn { padding: 0 6px; font-size: 10px; letter-spacing: 0.03em; gap: 3px; }
}

.mobilec521b-sec[id],
.mobilec521b-guide-block[id],
.mobilec521b-guide-band[id] {
  scroll-margin-top: calc(var(--mobilec521b-head-h) + 14px);
}

.mobilec521b-sheet-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--mobilec521b-line);
  margin-bottom: 10px;
}

.mobilec521b-sheet-title {
  font-family: var(--mobilec521b-font-head);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mobilec521b-mist);
}

.mobilec521b-sheet-title::before {
  content: "//";
  margin-right: 8px;
  color: var(--mobilec521b-steel);
  letter-spacing: 0;
}

.mobilec521b-sheet-close {
  margin-left: auto;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--mobilec521b-line);
  border-radius: var(--mobilec521b-radius);
  color: var(--mobilec521b-steel);
  transition: color 160ms var(--mobilec521b-ease),
    border-color 160ms var(--mobilec521b-ease);
}

.mobilec521b-sheet-close svg {
  width: 15px;
  height: 15px;
}

.mobilec521b-sheet-close:active {
  color: var(--mobilec521b-pure);
  border-color: var(--mobilec521b-pure);
}

.mobilec521b-sheet-group + .mobilec521b-sheet-group {
  margin-top: 12px;
}

.mobilec521b-sheet-cap {
  font-family: var(--mobilec521b-font-head);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mobilec521b-steel);
  padding: 0 2px 6px;
}

/* Route row: containerized symbol tile + label + forward tick. */
.mobilec521b-route {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 46px;
  padding: 4px 6px;
  border-radius: var(--mobilec521b-radius);
  transition: background-color 150ms var(--mobilec521b-ease);
}

.mobilec521b-route:active {
  background: var(--mobilec521b-tile-hover);
}

.mobilec521b-route-tile {
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border: 1px solid var(--mobilec521b-line);
  border-radius: var(--mobilec521b-radius-tight);
  color: var(--mobilec521b-mist);
  background: var(--mobilec521b-tile);
}

.mobilec521b-route-tile svg {
  width: 15px;
  height: 15px;
}

.mobilec521b-route-tx {
  font-family: var(--mobilec521b-font-head);
  font-size: 13.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--mobilec521b-mist);
}

.mobilec521b-route-arrow {
  margin-left: auto;
  color: var(--mobilec521b-steel);
}

.mobilec521b-route-arrow svg {
  width: 12px;
  height: 12px;
}

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

.mobilec521b-main {
  padding-top: calc(var(--mobilec521b-head-h) + 10px);
  /* Keep clear of the fixed dock, including iPhone home-bar insets. */
  padding-bottom: calc(var(--mobilec521b-dock-h) + env(safe-area-inset-bottom, 0px) + 34px);
}

/* --------------------------------------------------------------- intro ---- */

.mobilec521b-intro {
  padding: 14px 14px 4px;
}

.mobilec521b-intro-title {
  font-family: var(--mobilec521b-font-head);
  font-size: 21px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--mobilec521b-pure);
  text-wrap: balance;
}

.mobilec521b-intro-title::after {
  content: "";
  display: block;
  width: 44px;
  height: 2px;
  margin-top: 10px;
  background: linear-gradient(90deg, var(--mobilec521b-pure), transparent);
}

.mobilec521b-intro-text {
  margin-top: 11px;
  color: var(--mobilec521b-faint);
  font-size: 13.5px;
}

.mobilec521b-intro-text + .mobilec521b-intro-text {
  margin-top: 9px;
}

.mobilec521b-intro-text a,
.mobilec521b-lead a,
.mobilec521b-mod-text a,
.mobilec521b-voice-quote a,
.mobilec521b-pick-ans a,
.mobilec521b-compare a,
.mobilec521b-xfoot-brand p a,
.mobilec521b-wins-foot a {
  color: var(--mobilec521b-pure);
  border-bottom: 1px solid var(--mobilec521b-line-strong);
  padding-bottom: 1px;
  transition: border-color 150ms var(--mobilec521b-ease);
}

.mobilec521b-intro-text a:active,
.mobilec521b-lead a:active,
.mobilec521b-mod-text a:active,
.mobilec521b-voice-quote a:active,
.mobilec521b-pick-ans a:active,
.mobilec521b-compare a:active,
.mobilec521b-xfoot-brand p a:active,
.mobilec521b-wins-foot a:active {
  border-color: var(--mobilec521b-pure);
}

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

.mobilec521b-hero {
  position: relative;
  margin: 12px 10px 0;
  border: 1px solid var(--mobilec521b-line);
  border-radius: var(--mobilec521b-radius);
  overflow: hidden;
  background: var(--mobilec521b-ink-deep);
}

.mobilec521b-hero-track {
  display: flex;
  transition: transform 340ms var(--mobilec521b-ease);
}

.mobilec521b-hero-slide {
  flex: 0 0 100%;
  width: 100%;
  aspect-ratio: 16 / 7;
  overflow: hidden;
  position: relative;
  display: block;
}

.mobilec521b-hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.mobilec521b-hero-slide:active img {
  transform: scale(0.985);
}

.mobilec521b-hero-slide img {
  transition: transform 260ms var(--mobilec521b-ease);
}

.mobilec521b-hero-tag {
  position: absolute;
  top: 8px;
  left: 8px;
  padding: 4px 8px;
  font-family: var(--mobilec521b-font-head);
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mobilec521b-pure);
  background: rgba(26, 26, 26, 0.85);
  border: 1px solid var(--mobilec521b-line);
  border-radius: var(--mobilec521b-radius-tight);
  pointer-events: none;
}

.mobilec521b-hero-dots {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 9px;
  display: flex;
  justify-content: center;
  gap: 7px;
}

.mobilec521b-hero-dot {
  width: 34px;
  height: 22px;
  display: grid;
  place-items: center;
}

.mobilec521b-hero-dot::before {
  content: "";
  width: 9px;
  height: 9px;
  border-radius: 1.5px;
  background: rgba(236, 240, 241, 0.34);
  border: 1px solid rgba(236, 240, 241, 0.5);
  transition: background-color 200ms var(--mobilec521b-ease),
    width 200ms var(--mobilec521b-ease), border-color 200ms var(--mobilec521b-ease);
}

.mobilec521b-hero-dot.mobilec521b-is-on::before {
  width: 20px;
  background: var(--mobilec521b-pure);
  border-color: var(--mobilec521b-pure);
}

/* --------------------------------------------------------- category rail ---- */

.mobilec521b-rail {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 12px 10px 4px;
  scrollbar-width: none;
  -ms-overflow-style: none;
  -webkit-overflow-scrolling: touch;
  scroll-snap-type: x proximity;
}

.mobilec521b-rail::-webkit-scrollbar {
  display: none;
}

.mobilec521b-chip {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 44px;
  padding: 0 13px;
  scroll-snap-align: start;
  border: 1px solid var(--mobilec521b-line);
  border-radius: var(--mobilec521b-radius);
  background: var(--mobilec521b-tile);
  font-family: var(--mobilec521b-font-head);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mobilec521b-faint);
  transition: color 160ms var(--mobilec521b-ease),
    border-color 160ms var(--mobilec521b-ease),
    background-color 160ms var(--mobilec521b-ease);
}

.mobilec521b-chip svg {
  width: 13px;
  height: 13px;
  color: var(--mobilec521b-steel);
  transition: color 160ms var(--mobilec521b-ease);
}

.mobilec521b-chip[aria-current="true"] {
  color: var(--mobilec521b-ink);
  background: var(--mobilec521b-mist);
  border-color: var(--mobilec521b-mist);
}

.mobilec521b-chip[aria-current="true"] svg {
  color: var(--mobilec521b-ink);
}

/* ------------------------------------------------------------- sections ---- */

.mobilec521b-sec {
  margin-top: 24px;
}

.mobilec521b-sec-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 0 12px 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--mobilec521b-line);
}

.mobilec521b-sec-idx {
  font-family: var(--mobilec521b-font-head);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--mobilec521b-steel);
  white-space: nowrap;
}

.mobilec521b-sec-idx::after {
  content: "/";
  margin-left: 6px;
  color: var(--mobilec521b-line-strong);
}

.mobilec521b-sec-title {
  font-family: var(--mobilec521b-font-head);
  font-size: 15.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1.25;
  color: var(--mobilec521b-pure);
}

.mobilec521b-lead {
  margin: 0 14px 12px;
  font-size: 12.5px;
  color: var(--mobilec521b-dim);
}

/* ------------------------------------------------------------ game grid ---- */
/* Pure image cards: art up top, short name underneath, no play chrome. */

.mobilec521b-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 9px 6px;
  padding: 0 10px;
}

.mobilec521b-card {
  display: flex;
  flex-direction: column;
  gap: 5px;
  text-align: center;
  min-width: 0;
}

.mobilec521b-card-art {
  display: block;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--mobilec521b-line);
  border-radius: var(--mobilec521b-radius);
  background: var(--mobilec521b-ink-deep);
  overflow: hidden;
  transition: border-color 170ms var(--mobilec521b-ease),
    transform 170ms var(--mobilec521b-ease);
}

.mobilec521b-card-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.mobilec521b-card:active .mobilec521b-card-art {
  border-color: var(--mobilec521b-pure);
  transform: translateY(2px);
}

.mobilec521b-card-name {
  font-size: 10px;
  line-height: 1.3;
  letter-spacing: 0.01em;
  color: var(--mobilec521b-faint);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 26px;
  transition: color 150ms var(--mobilec521b-ease);
}

.mobilec521b-card:active .mobilec521b-card-name {
  color: var(--mobilec521b-pure);
}

/* ------------------------------------------------------------- modules ---- */

.mobilec521b-mod {
  margin-top: 26px;
  padding: 0 12px;
}

.mobilec521b-mod-cap {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding-bottom: 8px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--mobilec521b-line);
}

.mobilec521b-mod-cap .mobilec521b-sec-idx {
  flex: 0 0 auto;
}

.mobilec521b-mod-title {
  font-family: var(--mobilec521b-font-head);
  font-size: 15.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1.25;
  color: var(--mobilec521b-pure);
}

.mobilec521b-mod-text {
  font-size: 13px;
  color: var(--mobilec521b-faint);
}

.mobilec521b-mod-text + .mobilec521b-mod-text {
  margin-top: 9px;
}

/* Scene-branch pick cards: 1 column at 320px, 2 columns when wider. */
.mobilec521b-picks {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin-top: 12px;
}

.mobilec521b-pick {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 10px;
  align-items: start;
  padding: 11px 11px 12px;
  border: 1px solid var(--mobilec521b-line);
  border-radius: var(--mobilec521b-radius);
  background: var(--mobilec521b-tile);
  transition: border-color 170ms var(--mobilec521b-ease);
}

.mobilec521b-pick:active {
  border-color: var(--mobilec521b-line-strong);
}

.mobilec521b-pick-tile {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border: 1px solid var(--mobilec521b-line);
  border-radius: var(--mobilec521b-radius-tight);
  color: var(--mobilec521b-mist);
  background: var(--mobilec521b-ink-raise);
}

.mobilec521b-pick-tile svg {
  width: 19px;
  height: 19px;
}

.mobilec521b-pick-scene {
  display: block;
  font-family: var(--mobilec521b-font-head);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mobilec521b-pure);
  margin-bottom: 3px;
}

.mobilec521b-pick-ans {
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--mobilec521b-faint);
}

/* Voice cards: horizontal snap rail, quote-first rhythm. */
.mobilec521b-voices {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 2px 2px 8px;
  margin: 12px -2px 0;
  scrollbar-width: none;
  -ms-overflow-style: none;
  -webkit-overflow-scrolling: touch;
  scroll-snap-type: x mandatory;
}

.mobilec521b-voices::-webkit-scrollbar {
  display: none;
}

.mobilec521b-voice {
  flex: 0 0 86%;
  scroll-snap-align: center;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 13px 13px 12px;
  border: 1px solid var(--mobilec521b-line);
  border-left: 3px solid var(--mobilec521b-steel);
  border-radius: var(--mobilec521b-radius);
  background: linear-gradient(180deg, #232323, #202020);
}

.mobilec521b-voice-quote {
  font-size: 13px;
  line-height: 1.62;
  color: var(--mobilec521b-mist);
}

.mobilec521b-voice-quote::before {
  content: "\201C";
  font-family: var(--mobilec521b-font-head);
  font-size: 20px;
  line-height: 0;
  vertical-align: -6px;
  margin-right: 3px;
  color: var(--mobilec521b-steel);
}

.mobilec521b-voice-meta {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: auto;
}

.mobilec521b-voice-avatar {
  width: 28px;
  height: 28px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border: 1px solid var(--mobilec521b-line-strong);
  border-radius: 50%;
  font-family: var(--mobilec521b-font-head);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--mobilec521b-ink);
  background: var(--mobilec521b-steel);
}

.mobilec521b-voice-who {
  display: grid;
  gap: 1px;
  font-size: 11px;
  line-height: 1.35;
}

.mobilec521b-voice-who b {
  font-family: var(--mobilec521b-font-head);
  font-size: 11.5px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--mobilec521b-pure);
  font-weight: 700;
}

.mobilec521b-voice-who span {
  color: var(--mobilec521b-steel);
}

/* Join panel: decision-context CTA block. */
.mobilec521b-join {
  margin-top: 26px;
  padding: 16px 14px 15px;
  border: 1px solid var(--mobilec521b-line-strong);
  border-radius: var(--mobilec521b-radius);
  background:
    linear-gradient(135deg, rgba(236, 240, 241, 0.07), transparent 55%),
    linear-gradient(180deg, #2c2c2c, #262626);
}

.mobilec521b-join-title {
  font-family: var(--mobilec521b-font-head);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1.25;
  color: var(--mobilec521b-pure);
}

.mobilec521b-join-text {
  margin-top: 8px;
  font-size: 12.8px;
  color: var(--mobilec521b-faint);
}

.mobilec521b-join-acts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 13px;
}

.mobilec521b-join-acts .mobilec521b-btn {
  flex: 1 1 130px;
}

/* Comparison board: 3-column technical table rows. */
.mobilec521b-compare {
  margin-top: 12px;
  border: 1px solid var(--mobilec521b-line);
  border-radius: var(--mobilec521b-radius);
  overflow: hidden;
}

.mobilec521b-compare-row {
  display: grid;
  grid-template-columns: 84px 1fr 1fr;
}

.mobilec521b-compare-row + .mobilec521b-compare-row {
  border-top: 1px solid var(--mobilec521b-line);
}

.mobilec521b-compare-row > div {
  padding: 10px 9px;
  font-size: 11.5px;
  line-height: 1.5;
  color: var(--mobilec521b-faint);
  min-width: 0;
}

.mobilec521b-compare-row > div + div {
  border-left: 1px solid var(--mobilec521b-line);
}

.mobilec521b-compare-row:first-child > div {
  padding: 9px;
  font-family: var(--mobilec521b-font-head);
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mobilec521b-steel);
  background: var(--mobilec521b-tile);
}

.mobilec521b-compare-row > div:first-child {
  font-family: var(--mobilec521b-font-head);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--mobilec521b-pure);
  background: rgba(236, 240, 241, 0.03);
}

/* Winner feed: split rows with tabular figures. */
.mobilec521b-wins {
  margin-top: 12px;
  border: 1px solid var(--mobilec521b-line);
  border-radius: var(--mobilec521b-radius);
  padding: 2px 11px;
}

.mobilec521b-win {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 10px 0;
  text-align: left;
}

.mobilec521b-win + .mobilec521b-win {
  border-top: 1px dashed rgba(236, 240, 241, 0.12);
}

.mobilec521b-win img {
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  object-fit: cover;
  border: 1px solid var(--mobilec521b-line);
  border-radius: var(--mobilec521b-radius-tight);
}

.mobilec521b-win-game {
  font-family: var(--mobilec521b-font-head);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--mobilec521b-mist);
  min-width: 0;
}

.mobilec521b-win-game span {
  display: block;
  font-family: var(--mobilec521b-font-body);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.02em;
  text-transform: none;
  color: var(--mobilec521b-steel);
}

.mobilec521b-win-amt {
  margin-left: auto;
  font-family: var(--mobilec521b-font-head);
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--mobilec521b-pure);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.mobilec521b-win-time {
  flex: 0 0 auto;
  font-size: 10px;
  color: var(--mobilec521b-steel);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.mobilec521b-wins-foot {
  margin-top: 9px;
  font-size: 10.5px;
  line-height: 1.55;
  color: var(--mobilec521b-dim);
}

/* Start sheet: 2x2 numbered steps. */
.mobilec521b-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin-top: 12px;
}

.mobilec521b-step {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 10px;
  align-items: start;
  padding: 12px 11px;
  border: 1px solid var(--mobilec521b-line);
  border-radius: var(--mobilec521b-radius);
  background: var(--mobilec521b-tile);
}

.mobilec521b-step-n {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--mobilec521b-line-strong);
  border-radius: var(--mobilec521b-radius-tight);
  font-family: var(--mobilec521b-font-head);
  font-size: 14px;
  font-weight: 700;
  color: var(--mobilec521b-pure);
  background: var(--mobilec521b-ink-raise);
}

.mobilec521b-step-t {
  font-family: var(--mobilec521b-font-head);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mobilec521b-pure);
  margin-bottom: 3px;
}

.mobilec521b-step p {
  font-size: 12.2px;
  line-height: 1.55;
  color: var(--mobilec521b-faint);
}

/* --------------------------------------------------------- extended foot ---- */
/* Homepage-only block: brand > page directory > promotions > disclaimer. */

.mobilec521b-xfoot {
  margin-top: 30px;
  border-top: 1px solid var(--mobilec521b-line);
  padding: 18px 14px 6px;
  background: rgba(236, 240, 241, 0.02);
}

.mobilec521b-xfoot-brand {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 11px;
  align-items: start;
  padding-bottom: 16px;
}

.mobilec521b-xfoot-brand img {
  width: 40px;
  height: 40px;
  border: 1px solid var(--mobilec521b-line-strong);
  border-radius: var(--mobilec521b-radius);
  background: var(--mobilec521b-pure);
  padding: 2px;
  object-fit: contain;
}

.mobilec521b-xfoot-brand-name {
  font-family: var(--mobilec521b-font-head);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mobilec521b-pure);
  margin-bottom: 4px;
}

.mobilec521b-xfoot-brand p {
  font-size: 12px;
  line-height: 1.6;
  color: var(--mobilec521b-faint);
}

.mobilec521b-xfoot-cap {
  font-family: var(--mobilec521b-font-head);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mobilec521b-steel);
  padding-bottom: 7px;
  border-bottom: 1px solid var(--mobilec521b-line);
  margin-bottom: 4px;
}

.mobilec521b-xfoot-cap::before {
  content: "++";
  margin-right: 8px;
  letter-spacing: 0;
  color: var(--mobilec521b-line-strong);
}

.mobilec521b-xfoot-dir {
  margin-bottom: 16px;
}

.mobilec521b-xfoot-links {
  display: grid;
  grid-template-columns: 1fr;
}

.mobilec521b-xfoot-link {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 4px 2px;
  border-bottom: 1px solid rgba(236, 240, 241, 0.07);
  transition: background-color 150ms var(--mobilec521b-ease);
}

.mobilec521b-xfoot-link:active {
  background: var(--mobilec521b-tile-hover);
}

.mobilec521b-xfoot-link b {
  font-family: var(--mobilec521b-font-head);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--mobilec521b-mist);
}

.mobilec521b-xfoot-link span {
  display: block;
  font-size: 10.5px;
  color: var(--mobilec521b-steel);
  line-height: 1.4;
}

.mobilec521b-xfoot-link .mobilec521b-xfoot-tick {
  margin-left: auto;
  color: var(--mobilec521b-steel);
  flex: 0 0 auto;
}

.mobilec521b-xfoot-link .mobilec521b-xfoot-tick svg {
  width: 12px;
  height: 12px;
}

.mobilec521b-xfoot-promos {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin-bottom: 16px;
}

/* Compact promo action: containerized icon tile + two-line label. */
.mobilec521b-xact {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 52px;
  padding: 8px 11px;
  border: 1px solid var(--mobilec521b-line-strong);
  border-radius: var(--mobilec521b-radius);
  background: linear-gradient(180deg, #2c2c2c, #262626);
  text-align: left;
  transition: border-color 160ms var(--mobilec521b-ease),
    transform 160ms var(--mobilec521b-ease);
}

.mobilec521b-xact:active {
  border-color: var(--mobilec521b-pure);
  transform: translateY(1px);
}

.mobilec521b-xact-tile {
  width: 32px;
  height: 32px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border: 1px solid var(--mobilec521b-line);
  border-radius: var(--mobilec521b-radius-tight);
  color: var(--mobilec521b-pure);
  background: var(--mobilec521b-tile-hover);
}

.mobilec521b-xact-tile svg {
  width: 16px;
  height: 16px;
}

.mobilec521b-xact b {
  display: block;
  font-family: var(--mobilec521b-font-head);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mobilec521b-pure);
}

.mobilec521b-xact span {
  display: block;
  font-size: 10.5px;
  color: var(--mobilec521b-dim);
  line-height: 1.4;
}

.mobilec521b-xfoot-note {
  font-size: 10.5px;
  line-height: 1.6;
  color: var(--mobilec521b-dim);
  padding: 11px 12px;
  border: 1px dashed rgba(236, 240, 241, 0.18);
  border-radius: var(--mobilec521b-radius);
}

/* ---------------------------------------------------------- common foot ---- */

.mobilec521b-foot {
  padding: 16px 14px 10px;
  border-top: 1px solid var(--mobilec521b-line);
  text-align: center;
}

.mobilec521b-foot p {
  font-size: 10.5px;
  letter-spacing: 0.04em;
  color: var(--mobilec521b-steel);
}

/* ------------------------------------------------------------ dock (nav) ---- */
/* Compact icon rack: containerized symbol tiles, fill-change active state,
   label reveal on the live item. Fixed to the phone canvas bottom. */

.mobilec521b-dock {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 430px;
  height: calc(var(--mobilec521b-dock-h) + env(safe-area-inset-bottom, 0px));
  padding-bottom: env(safe-area-inset-bottom, 0px);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  background: rgba(24, 24, 24, 0.96);
  border-top: 1px solid var(--mobilec521b-line);
  z-index: 78;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.mobilec521b-dock-item {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-height: var(--mobilec521b-dock-h);
  padding: 0 2px;
}

.mobilec521b-dock-ic {
  width: 31px;
  height: 31px;
  display: grid;
  place-items: center;
  border: 1px solid transparent;
  border-radius: var(--mobilec521b-radius);
  color: var(--mobilec521b-steel);
  background: transparent;
  transition: background-color 190ms var(--mobilec521b-ease),
    color 190ms var(--mobilec521b-ease),
    border-color 190ms var(--mobilec521b-ease),
    transform 190ms var(--mobilec521b-ease);
}

.mobilec521b-dock-ic svg {
  width: 17px;
  height: 17px;
}

/* Icon fill flips on the live item: hollow glyph -> filled mark. */
.mobilec521b-dock-ic .mobilec521b-svg-fill {
  fill: none;
  transition: fill 190ms var(--mobilec521b-ease);
}

.mobilec521b-dock-tx {
  font-family: var(--mobilec521b-font-head);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mobilec521b-steel);
  opacity: 0.62;
  transform: translateY(3px);
  transition: opacity 190ms var(--mobilec521b-ease),
    transform 190ms var(--mobilec521b-ease), color 190ms var(--mobilec521b-ease);
}

.mobilec521b-dock-item:active .mobilec521b-dock-ic {
  transform: translateY(2px);
}

.mobilec521b-dock-item:active .mobilec521b-dock-tx {
  opacity: 1;
  transform: translateY(0);
}

.mobilec521b-dock-item.mobilec521b-is-live .mobilec521b-dock-ic {
  background: var(--mobilec521b-mist);
  border-color: var(--mobilec521b-mist);
  color: var(--mobilec521b-ink);
}

.mobilec521b-dock-item.mobilec521b-is-live .mobilec521b-svg-fill {
  fill: currentColor;
}

.mobilec521b-dock-item.mobilec521b-is-live .mobilec521b-dock-tx {
  color: var(--mobilec521b-pure);
  opacity: 1;
  transform: translateY(0);
}

/* ------------------------------------------------------- reveal motion ---- */
/* Short-distance section transitions. The veil class is added by JS only,
   so content stays fully visible when scripts are unavailable. */

[data-mobilec521b-reveal] {
  transition: opacity var(--mobilec521b-move) var(--mobilec521b-ease),
    transform var(--mobilec521b-move) var(--mobilec521b-ease);
}

.mobilec521b-veil {
  opacity: 0.001;
  transform: translateY(9px);
}

.mobilec521b-veil.mobilec521b-in {
  opacity: 1;
  transform: translateY(0);
}

/* ------------------------------------------------------------ help pages ---- */
/* Route-led guides share the site chrome, not a single body layout. */
.mobilec521b-guide {
  padding: 14px 14px 0;
}

.mobilec521b-guide-kicker,
.mobilec521b-guide-index {
  font-family: var(--mobilec521b-font-head);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mobilec521b-steel);
}

.mobilec521b-guide h1 {
  margin: 10px 0 12px;
  color: var(--mobilec521b-pure);
  font: 700 22px/1.15 var(--mobilec521b-font-head);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  overflow-wrap: anywhere;
}

.mobilec521b-guide p,
.mobilec521b-guide-block p,
.mobilec521b-guide-block li,
.mobilec521b-guide-band p,
.mobilec521b-guide-note {
  color: var(--mobilec521b-faint);
  font-size: 13px;
  line-height: 1.65;
}

.mobilec521b-guide p + p,
.mobilec521b-guide-block p + p {
  margin-top: 9px;
}

.mobilec521b-guide a:not(.mobilec521b-btn),
.mobilec521b-guide-block a:not(.mobilec521b-btn),
.mobilec521b-guide-band a:not(.mobilec521b-btn) {
  color: var(--mobilec521b-pure);
  text-decoration: underline;
  text-decoration-color: var(--mobilec521b-steel);
  text-underline-offset: 3px;
}

.mobilec521b-guide-acts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.mobilec521b-guide-acts .mobilec521b-btn {
  min-width: 112px;
}

.mobilec521b-guide-block {
  margin: 26px 14px 0;
  min-width: 0;
}

.mobilec521b-guide-block h2,
.mobilec521b-guide-band h2 {
  color: var(--mobilec521b-pure);
  font: 700 17px/1.3 var(--mobilec521b-font-head);
  letter-spacing: 0.035em;
  text-transform: uppercase;
  overflow-wrap: anywhere;
}

.mobilec521b-guide-block h2::before {
  content: "";
  display: block;
  width: 28px;
  height: 2px;
  margin-bottom: 10px;
  background: var(--mobilec521b-steel);
}

.mobilec521b-guide-block > p:first-of-type,
.mobilec521b-guide-band > p:first-of-type {
  margin-top: 11px;
}

.mobilec521b-guide-block h3 {
  margin: 0 0 5px;
  font: 700 12px/1.35 var(--mobilec521b-font-head);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--mobilec521b-pure);
}

.mobilec521b-guide-block .mobilec521b-btn,
.mobilec521b-guide-band .mobilec521b-btn {
  margin-top: 12px;
}

.mobilec521b-guide-path {
  margin-top: 14px;
  border-left: 2px solid var(--mobilec521b-steel);
}

.mobilec521b-guide-stop {
  position: relative;
  margin-left: 12px;
  padding: 0 0 20px 12px;
  border-bottom: 1px solid var(--mobilec521b-line);
}

.mobilec521b-guide-stop + .mobilec521b-guide-stop {
  padding-top: 18px;
}

.mobilec521b-guide-stop::before {
  content: "";
  position: absolute;
  top: 5px;
  left: -18px;
  width: 8px;
  height: 8px;
  background: var(--mobilec521b-mist);
  border: 2px solid var(--mobilec521b-ink);
}

.mobilec521b-guide-stop + .mobilec521b-guide-stop::before {
  top: 23px;
}

.mobilec521b-guide-stop p {
  margin-top: 5px;
}

.mobilec521b-guide-cases,
.mobilec521b-guide-compare {
  display: grid;
  gap: 1px;
  margin-top: 12px;
  border: 1px solid var(--mobilec521b-line);
  background: var(--mobilec521b-line);
}

.mobilec521b-guide-case,
.mobilec521b-guide-compare > div {
  background: var(--mobilec521b-ink);
  padding: 12px;
  min-width: 0;
}

.mobilec521b-guide-case p,
.mobilec521b-guide-compare p {
  margin-top: 4px;
}

.mobilec521b-guide-band {
  margin: 28px 0 0;
  padding: 18px 14px;
  border-top: 1px solid var(--mobilec521b-line-strong);
  border-bottom: 1px solid var(--mobilec521b-line-strong);
  background: linear-gradient(120deg, rgba(119, 136, 153, 0.18), rgba(236, 240, 241, 0.025) 58%);
}

.mobilec521b-guide-gloss {
  margin-top: 11px;
}

.mobilec521b-guide-gloss dt {
  font: 700 12px var(--mobilec521b-font-head);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--mobilec521b-pure);
  margin-top: 12px;
}

.mobilec521b-guide-gloss dd {
  margin: 4px 0 0;
  font-size: 12.5px;
  color: var(--mobilec521b-faint);
  line-height: 1.55;
}

.mobilec521b-guide-q {
  padding: 12px 0;
  border-bottom: 1px solid var(--mobilec521b-line);
}

.mobilec521b-guide-q p {
  margin-top: 5px;
}

.mobilec521b-guide-note {
  margin-top: 14px;
  padding: 12px;
  border-left: 2px solid var(--mobilec521b-steel);
  background: var(--mobilec521b-tile);
}

/* Features guide uses a compact index and decision matrix instead of a route timeline. */
.mobilec521b-feature-map {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  margin-top: 14px;
}

.mobilec521b-feature-map a {
  min-height: 58px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 8px 10px;
  border: 1px solid var(--mobilec521b-line);
  background: var(--mobilec521b-tile);
  font: 700 11px/1.4 var(--mobilec521b-font-head);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none !important;
}

.mobilec521b-feature-map span {
  color: var(--mobilec521b-steel);
  font-size: 9px;
  margin-bottom: 3px;
}

.mobilec521b-feature-row {
  display: grid;
  grid-template-columns: minmax(0, 85px) minmax(0, 1fr);
  gap: 8px;
  padding: 12px 0;
  border-bottom: 1px solid var(--mobilec521b-line);
}

.mobilec521b-feature-row strong {
  color: var(--mobilec521b-pure);
  font: 700 11px/1.5 var(--mobilec521b-font-head);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.mobilec521b-feature-row p {
  margin: 0;
}

.mobilec521b-feature-check {
  margin-top: 12px;
  counter-reset: mobilec521b-check;
}

.mobilec521b-feature-check li {
  position: relative;
  padding: 10px 0 10px 31px;
  border-bottom: 1px solid var(--mobilec521b-line);
}

.mobilec521b-feature-check li::before {
  counter-increment: mobilec521b-check;
  content: counter(mobilec521b-check, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 10px;
  color: var(--mobilec521b-pure);
  font: 700 12px var(--mobilec521b-font-head);
}

.mobilec521b-feature-branch {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.mobilec521b-feature-branch > div {
  padding: 11px 12px;
  border-left: 2px solid var(--mobilec521b-steel);
  background: var(--mobilec521b-tile);
}

.mobilec521b-feature-branch p {
  margin-top: 5px;
}

/* --------------------------------------------------------- breakpoints ---- */

/* Comfortable phones: widen picks/steps to two columns, 5-column game grid. */
@media (min-width: 375px) {
  .mobilec521b-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .mobilec521b-picks,
  .mobilec521b-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .mobilec521b-voice {
    flex: 0 0 72%;
  }

  .mobilec521b-xfoot-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 14px;
  }

  .mobilec521b-xfoot-promos {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .mobilec521b-intro {
    padding: 16px 16px 4px;
  }

  .mobilec521b-sec-head,
  .mobilec521b-mod {
    margin-left: 0;
    margin-right: 0;
  }

  .mobilec521b-sec-lead-pad {
    padding-left: 4px;
    padding-right: 4px;
  }
}

/* Upper edge of the phone canvas: slightly roomier type and rhythm. */
@media (min-width: 430px) {
  .mobilec521b-intro-title {
    font-size: 22px;
  }

  .mobilec521b-mod-text,
  .mobilec521b-lead {
    font-size: 13px;
  }

  .mobilec521b-hero-slide {
    aspect-ratio: 16 / 6.5;
  }

  .mobilec521b-grid {
    gap: 10px 7px;
  }
}

/* Wider screens frame the same 430px canvas like a device bezel. */
@media (min-width: 470px) {
  body {
    background:
      radial-gradient(60% 40% at 50% 0%, rgba(236, 240, 241, 0.04), transparent 70%),
      #101010;
  }

  .mobilec521b-shell {
    border-left: 1px solid rgba(236, 240, 241, 0.09);
    border-right: 1px solid rgba(236, 240, 241, 0.09);
    box-shadow: 0 0 60px rgba(0, 0, 0, 0.55);
  }
}

/* Respect users who prefer calmer interfaces. */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .mobilec521b-veil {
    opacity: 1;
    transform: none;
  }
}