/* ==========================================================================
   bermor techzone — surface-mobile-370c31.css
   Mobile-first stylesheet for a 320-430px phone canvas.
   Palette: #141414 base / #5D5D5D lines / #DCDCDC ink / #87CEEB accent /
            #000080 deep / #999999 dim
   Voice: monospace accents over a regular body face, stroke-led surfaces,
   square high-contrast CTAs, light floating game cards.
   ========================================================================== */

:root {
  --mobile70c31-bg:            #141414;
  --mobile70c31-bg-deep:       #0e0e0e;
  --mobile70c31-surface:       #1b1b1b;
  --mobile70c31-surface-raise: #212121;
  --mobile70c31-line:          #5D5D5D;
  --mobile70c31-line-soft:     #2b2b2b;
  --mobile70c31-ink:           #DCDCDC;
  --mobile70c31-ink-dim:       #999999;
  --mobile70c31-sky:           #87CEEB;
  --mobile70c31-navy:          #000080;
  --mobile70c31-shell:         430px;
  --mobile70c31-bnav-h:        62px;
  --mobile70c31-topbar-h:      104px;
  --mobile70c31-mono: "UI Monospace", "Cascadia Mono", "SF Mono", "Roboto Mono", "Courier New", monospace;
  --mobile70c31-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

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

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

body {
  margin: 0;
  background: #0a0a0a;
  color: var(--mobile70c31-ink);
  font-family: var(--mobile70c31-sans);
  font-size: 15px;
  line-height: 1.6;
}

/* Phone canvas: everything lives inside a column capped at 430px. */
.mobile70c31-page {
  position: relative;
  max-width: 430px;
  margin: 0 auto;
  min-height: 100vh;
  background: var(--mobile70c31-bg);
  border-left: 1px solid var(--mobile70c31-line-soft);
  border-right: 1px solid var(--mobile70c31-line-soft);
}

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

a { color: var(--mobile70c31-sky); text-decoration: none; }
a:hover { text-decoration: underline; }

button { font: inherit; color: inherit; }

:focus-visible {
  outline: 2px solid var(--mobile70c31-sky);
  outline-offset: 2px;
}

.mobile70c31-skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--mobile70c31-sky);
  color: var(--mobile70c31-navy);
  padding: 10px 16px;
  font-family: var(--mobile70c31-mono);
  font-size: 13px;
}
.mobile70c31-skip:focus { left: 12px; top: 12px; }

/* Monospace accent utility for tags, numbers, markers. */
.mobile70c31-mono {
  font-family: var(--mobile70c31-mono);
  letter-spacing: 0.04em;
}

/* ---------- top bar: centred identity strip + action row --------------- */

.mobile70c31-topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(14, 14, 14, 0.94);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--mobile70c31-line);
  padding-top: env(safe-area-inset-top);
}

.mobile70c31-identity {
  display: flex;
  justify-content: center;
  border-bottom: 1px dashed var(--mobile70c31-line-soft);
  padding: 7px 12px 6px;
}

.mobile70c31-brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--mobile70c31-ink);
}
.mobile70c31-brand:hover { text-decoration: none; }

.mobile70c31-logo {
  width: 34px;
  height: 34px;
  border: 1px solid var(--mobile70c31-line);
  padding: 2px;
  background: var(--mobile70c31-surface);
  image-rendering: auto;
}

.mobile70c31-brand-name {
  font-family: var(--mobile70c31-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: lowercase;
  color: var(--mobile70c31-ink);
}

.mobile70c31-actions {
  display: grid;
  grid-template-columns: 1fr 1fr 50px;
  gap: 8px;
  padding: 8px 12px;
}

/* Square, high-contrast CTAs (stroke-led corners: 0 radius by design). */
.mobile70c31-btn {
  min-height: 44px;
  border: 1px solid transparent;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 0.15s ease, background-color 0.15s ease, color 0.15s ease;
}
.mobile70c31-btn:active { transform: translateY(1px); }

.mobile70c31-btn-solid {
  background: var(--mobile70c31-sky);
  color: var(--mobile70c31-navy);
  border-color: var(--mobile70c31-sky);
}
.mobile70c31-btn-solid:hover { background: #a8daf5; }

.mobile70c31-btn-ghost {
  background: transparent;
  color: var(--mobile70c31-ink);
  border-color: var(--mobile70c31-ink);
}
.mobile70c31-btn-ghost:hover { border-color: var(--mobile70c31-sky); color: var(--mobile70c31-sky); }

.mobile70c31-menubtn {
  min-height: 44px;
  background: transparent;
  border: 1px solid var(--mobile70c31-line);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mobile70c31-menubtn-box {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
}
.mobile70c31-menubtn-box span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--mobile70c31-ink);
  transition: transform 0.18s ease, opacity 0.18s ease;
}
.mobile70c31-menubtn[aria-expanded="true"] .mobile70c31-menubtn-box span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.mobile70c31-menubtn[aria-expanded="true"] .mobile70c31-menubtn-box span:nth-child(2) { opacity: 0; }
.mobile70c31-menubtn[aria-expanded="true"] .mobile70c31-menubtn-box span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- stacked overlay menu --------------------------------------- */

.mobile70c31-menu {
  position: fixed;
  inset: 0;
  z-index: 60;
  width: 100%;
  max-width: 430px;
  left: 50%;
  transform: translateX(-50%) translateX(-14px);
  background: rgba(10, 10, 10, 0.97);
  border-right: 1px solid var(--mobile70c31-line-soft);
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: transform 0.24s ease, opacity 0.24s ease, visibility 0.24s;
  padding-top: env(safe-area-inset-top);
}
.mobile70c31-menu.mobile70c31-menu-open {
  transform: translateX(-50%) translateX(0);
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.mobile70c31-menu-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--mobile70c31-line-soft);
}

.mobile70c31-menu-title {
  font-family: var(--mobile70c31-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mobile70c31-ink-dim);
  margin: 0;
}

.mobile70c31-menu-close {
  min-width: 44px;
  min-height: 44px;
  background: transparent;
  border: 1px solid var(--mobile70c31-line);
  color: var(--mobile70c31-ink);
  font-family: var(--mobile70c31-mono);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
}
.mobile70c31-menu-close:hover { border-color: var(--mobile70c31-sky); color: var(--mobile70c31-sky); }

.mobile70c31-menu-list {
  list-style: none;
  margin: 0;
  padding: 6px 0 24px;
  overflow-y: auto;
}

.mobile70c31-menu-list li { border-bottom: 1px solid var(--mobile70c31-line-soft); }

.mobile70c31-menu-list a {
  display: grid;
  grid-template-columns: 44px 1fr;
  align-items: center;
  min-height: 56px;
  padding: 10px 16px;
  color: var(--mobile70c31-ink);
  transition: background-color 0.15s ease;
}
.mobile70c31-menu-list a:hover,
.mobile70c31-menu-list a:focus-visible {
  background: var(--mobile70c31-surface);
  text-decoration: none;
}

.mobile70c31-menu-num {
  font-family: var(--mobile70c31-mono);
  font-size: 12px;
  color: var(--mobile70c31-sky);
  border-right: 1px solid var(--mobile70c31-line-soft);
  margin-right: 12px;
}

.mobile70c31-menu-main {
  display: block;
  font-weight: 700;
  font-size: 15px;
}

.mobile70c31-menu-sub {
  display: block;
  font-size: 12px;
  color: var(--mobile70c31-ink-dim);
}

/* ---------- layout wrap ------------------------------------------------ */

.mobile70c31-main {
  padding: 0 0 calc(var(--mobile70c31-bnav-h) + 26px + env(safe-area-inset-bottom));
}

.mobile70c31-wrap {
  padding: 0 14px;
}

.mobile70c31-section {
  margin-top: 30px;
  border-top: 1px solid var(--mobile70c31-line-soft);
  padding-top: 16px;
}

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

.mobile70c31-hero {
  padding: 16px 14px 4px;
}

.mobile70c31-eyebrow {
  margin: 0 0 8px;
  font-family: var(--mobile70c31-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--mobile70c31-sky);
}

.mobile70c31-hero h1 {
  margin: 0 0 10px;
  font-size: 21px;
  line-height: 1.32;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: #ffffff;
  border-left: 3px solid var(--mobile70c31-sky);
  padding-left: 10px;
}

.mobile70c31-lede {
  margin: 0 0 14px;
  color: var(--mobile70c31-ink);
  font-size: 14px;
}

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

.mobile70c31-carousel {
  position: relative;
  margin: 0 14px 6px;
  border: 1px solid var(--mobile70c31-line);
  background: var(--mobile70c31-surface);
  overflow: hidden;
}

.mobile70c31-track {
  position: relative;
  aspect-ratio: 2 / 1;
  overflow: hidden;
}

.mobile70c31-slide {
  position: absolute;
  inset: 0;
  display: block;
  opacity: 0;
  transform: translateX(14px);
  transition: opacity 0.4s ease, transform 0.4s ease;
  pointer-events: none;
}
.mobile70c31-slide.mobile70c31-slide-on {
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
}

.mobile70c31-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.mobile70c31-slide-cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 26px 12px 10px;
  background: linear-gradient(180deg, rgba(10, 10, 10, 0) 0%, rgba(10, 10, 10, 0.92) 78%);
  color: var(--mobile70c31-ink);
}
.mobile70c31-slide-cap b {
  display: block;
  font-family: var(--mobile70c31-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mobile70c31-sky);
}
.mobile70c31-slide-cap small {
  display: block;
  font-size: 12px;
  line-height: 1.45;
  color: var(--mobile70c31-ink);
}

.mobile70c31-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  padding: 8px 0 10px;
  border-top: 1px solid var(--mobile70c31-line-soft);
}

.mobile70c31-dot {
  width: 44px;
  min-height: 22px;
  padding: 0;
  background: transparent;
  border: none;
  cursor: pointer;
  position: relative;
}
.mobile70c31-dot::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 22px;
  height: 3px;
  background: var(--mobile70c31-line);
  transition: background-color 0.2s ease, width 0.2s ease;
}
.mobile70c31-dot.mobile70c31-dot-on::after {
  width: 30px;
  background: var(--mobile70c31-sky);
}

/* ---------- glance strip ------------------------------------------------ */

.mobile70c31-glance {
  margin: 18px 14px 0;
  border: 1px solid var(--mobile70c31-line-soft);
  background: var(--mobile70c31-surface);
}

.mobile70c31-glance h2 {
  margin: 0;
  padding: 10px 12px;
  font-size: 14px;
  letter-spacing: 0.02em;
  border-bottom: 1px dashed var(--mobile70c31-line-soft);
  color: #ffffff;
}

.mobile70c31-glance ul {
  list-style: none;
  margin: 0;
  padding: 4px 12px 10px;
}

.mobile70c31-glance li {
  position: relative;
  padding: 7px 0 7px 16px;
  font-size: 13px;
  color: var(--mobile70c31-ink);
  border-bottom: 1px dotted var(--mobile70c31-line-soft);
}
.mobile70c31-glance li:last-child { border-bottom: none; }
.mobile70c31-glance li::before {
  content: ">";
  position: absolute;
  left: 0;
  top: 7px;
  font-family: var(--mobile70c31-mono);
  color: var(--mobile70c31-sky);
}

/* ---------- section heads ------------------------------------------------ */

.mobile70c31-sec-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
  margin: 0 0 8px;
}

.mobile70c31-sec-tag {
  font-family: var(--mobile70c31-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mobile70c31-navy);
  background: var(--mobile70c31-sky);
  border: 1px solid var(--mobile70c31-sky);
  padding: 2px 7px;
  white-space: nowrap;
}

.mobile70c31-sec-count {
  margin-left: auto;
  font-family: var(--mobile70c31-mono);
  font-size: 11px;
  color: var(--mobile70c31-ink-dim);
}

.mobile70c31-section h2 {
  margin: 0 0 8px;
  font-size: 18px;
  line-height: 1.35;
  color: #ffffff;
}

.mobile70c31-sec-intro {
  margin: 0 0 12px;
  font-size: 13.5px;
  color: var(--mobile70c31-ink);
}
.mobile70c31-sec-intro a { border-bottom: 1px solid var(--mobile70c31-sky); }

/* ---------- game grid: light floating image cards ------------------------ */

.mobile70c31-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px 7px;
}

.mobile70c31-tile {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 5px;
  padding: 0;
  background: transparent;
  border: none;
  cursor: pointer;
  -webkit-tap-highlight-color: rgba(135, 206, 235, 0.18);
  transition: transform 0.16s ease;
}
.mobile70c31-tile:hover,
.mobile70c31-tile:focus-visible { transform: translateY(-2px); }
.mobile70c31-tile:active { transform: translateY(0); }

.mobile70c31-tile-frame {
  display: block;
  border: 1px solid var(--mobile70c31-line-soft);
  background: var(--mobile70c31-surface-raise);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.45);
  padding: 4px;
  transition: border-color 0.16s ease, box-shadow 0.16s ease;
}
.mobile70c31-tile:hover .mobile70c31-tile-frame,
.mobile70c31-tile:focus-visible .mobile70c31-tile-frame {
  border-color: var(--mobile70c31-sky);
  box-shadow: 0 10px 18px rgba(0, 0, 0, 0.55);
}

.mobile70c31-tile-frame img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  background: var(--mobile70c31-bg-deep);
}

.mobile70c31-tile-name {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  overflow: hidden;
  overflow-wrap: anywhere;
  font-size: 11px;
  line-height: 1.35;
  text-align: center;
  color: var(--mobile70c31-ink);
  min-height: 30px;
}

/* ---------- achievements ------------------------------------------------- */

.mobile70c31-ach-rows {
  list-style: none;
  margin: 0;
  padding: 0;
  border: 1px solid var(--mobile70c31-line-soft);
  background: var(--mobile70c31-surface);
}

.mobile70c31-ach-rows li {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 10px;
  padding: 11px 12px;
  border-bottom: 1px solid var(--mobile70c31-line-soft);
  font-size: 13px;
}
.mobile70c31-ach-rows li:last-child { border-bottom: none; }

.mobile70c31-ach-key {
  font-family: var(--mobile70c31-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--mobile70c31-sky);
  border: 1px dashed var(--mobile70c31-line);
  padding: 3px 6px;
  align-self: start;
  text-align: center;
}

/* ---------- winners feed -------------------------------------------------- */

.mobile70c31-win-list {
  list-style: none;
  margin: 0 0 12px;
  padding: 0;
  border: 1px solid var(--mobile70c31-line-soft);
  background: var(--mobile70c31-bg-deep);
}

.mobile70c31-win-list li {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 12px;
  padding: 9px 12px;
  border-bottom: 1px dotted var(--mobile70c31-line-soft);
  font-size: 12.5px;
}
.mobile70c31-win-list li:last-child { border-bottom: none; }

.mobile70c31-win-game { color: var(--mobile70c31-ink); }
.mobile70c31-win-meta {
  font-family: var(--mobile70c31-mono);
  font-size: 11px;
  color: var(--mobile70c31-ink-dim);
}
.mobile70c31-win-amt {
  font-family: var(--mobile70c31-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--mobile70c31-sky);
  white-space: nowrap;
}

/* ---------- faq ----------------------------------------------------------- */

.mobile70c31-faq { border-top: 1px solid var(--mobile70c31-line-soft); }

.mobile70c31-faq-item {
  border-bottom: 1px solid var(--mobile70c31-line-soft);
  background: var(--mobile70c31-surface);
}

.mobile70c31-faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-height: 48px;
  padding: 12px 12px 12px 14px;
  font-weight: 700;
  font-size: 14px;
  color: #ffffff;
}
.mobile70c31-faq-item summary::-webkit-details-marker { display: none; }
.mobile70c31-faq-item summary::before {
  content: "+";
  font-family: var(--mobile70c31-mono);
  color: var(--mobile70c31-sky);
  font-size: 16px;
  flex: 0 0 auto;
  transition: transform 0.18s ease;
}
.mobile70c31-faq-item[open] summary::before { transform: rotate(45deg); }

.mobile70c31-faq-item p {
  margin: 0;
  padding: 0 14px 13px 32px;
  font-size: 13.5px;
  color: var(--mobile70c31-ink);
}

/* ---------- scenario -------------------------------------------------------- */

.mobile70c31-scen-lead {
  margin: 0 0 12px;
  padding: 10px 12px;
  border-left: 3px solid var(--mobile70c31-sky);
  background: var(--mobile70c31-surface);
  font-size: 13.5px;
}

.mobile70c31-scen-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: mobile70c31-step;
}

.mobile70c31-scen-steps li {
  counter-increment: mobile70c31-step;
  position: relative;
  padding: 9px 0 9px 40px;
  font-size: 13.5px;
  border-bottom: 1px dotted var(--mobile70c31-line-soft);
}
.mobile70c31-scen-steps li:last-child { border-bottom: none; }
.mobile70c31-scen-steps li::before {
  content: counter(mobile70c31-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 10px;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--mobile70c31-line);
  font-family: var(--mobile70c31-mono);
  font-size: 11px;
  color: var(--mobile70c31-sky);
}

/* ---------- terms ------------------------------------------------------------ */

.mobile70c31-terms { margin: 0; }

.mobile70c31-terms dt {
  font-family: var(--mobile70c31-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mobile70c31-sky);
  border-top: 1px solid var(--mobile70c31-line-soft);
  padding: 10px 0 2px;
}
.mobile70c31-terms dd {
  margin: 0;
  padding: 0 0 10px 12px;
  border-left: 1px dashed var(--mobile70c31-line);
  font-size: 13.5px;
  color: var(--mobile70c31-ink);
}

/* ---------- extended footer --------------------------------------------------- */

.mobile70c31-xfooter {
  margin-top: 34px;
  border-top: 2px solid var(--mobile70c31-line);
  background: var(--mobile70c31-bg-deep);
  padding: 18px 14px 6px;
}

.mobile70c31-xfooter h2 {
  margin: 0 0 10px;
  font-size: 15px;
  color: #ffffff;
}

.mobile70c31-dir-list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px 16px;
}

.mobile70c31-dir-list a {
  display: block;
  min-height: 40px;
  padding: 9px 2px;
  border-bottom: 1px dotted var(--mobile70c31-line-soft);
  color: var(--mobile70c31-ink);
  font-size: 12.5px;
}
.mobile70c31-dir-list a:hover { color: var(--mobile70c31-sky); text-decoration: none; }

.mobile70c31-brandnote {
  border: 1px solid var(--mobile70c31-line-soft);
  background: var(--mobile70c31-surface);
  padding: 11px 12px;
  font-size: 12.5px;
  color: var(--mobile70c31-ink);
  margin: 0 0 16px;
}

.mobile70c31-promo-label {
  margin: 0 0 8px;
  font-family: var(--mobile70c31-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mobile70c31-ink-dim);
}

.mobile70c31-promos {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 16px;
}

.mobile70c31-promo-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  min-height: 48px;
  padding: 10px 12px;
  background: transparent;
  border: 1px solid var(--mobile70c31-line);
  color: var(--mobile70c31-ink);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease, transform 0.15s ease;
}
.mobile70c31-promo-btn:hover {
  border-color: var(--mobile70c31-sky);
  color: var(--mobile70c31-sky);
}
.mobile70c31-promo-btn:active { transform: translateY(1px); }

.mobile70c31-promo-btn svg { flex: 0 0 auto; }

.mobile70c31-disclaimer {
  margin: 0 0 12px;
  padding-top: 10px;
  border-top: 1px dashed var(--mobile70c31-line-soft);
  font-size: 11.5px;
  line-height: 1.55;
  color: var(--mobile70c31-ink-dim);
}

/* ---------- common footer -------------------------------------------------- */

.mobile70c31-footer {
  border-top: 1px solid var(--mobile70c31-line-soft);
  padding: 14px 14px 18px;
  text-align: center;
}
.mobile70c31-footer p {
  margin: 0;
  font-family: var(--mobile70c31-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mobile70c31-ink-dim);
}

/* ---------- bottom nav: compact icon rack ------------------------------------ */

.mobile70c31-bnav {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 430px;
  z-index: 50;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  min-height: var(--mobile70c31-bnav-h);
  padding-bottom: env(safe-area-inset-bottom);
  background: rgba(14, 14, 14, 0.96);
  backdrop-filter: blur(6px);
  border-top: 1px solid var(--mobile70c31-line);
}

.mobile70c31-bnav-link {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  min-height: var(--mobile70c31-bnav-h);
  padding: 6px 2px 8px;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--mobile70c31-ink-dim);
  transition: color 0.16s ease;
}
.mobile70c31-bnav-link:hover { color: var(--mobile70c31-ink); text-decoration: none; }

.mobile70c31-bnav-ico {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  stroke-width: 1.6;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform 0.18s ease;
}
.mobile70c31-bnav-ico .mobile70c31-fill { fill: none; transition: fill 0.18s ease; }

.mobile70c31-bnav-label {
  font-family: var(--mobile70c31-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
}

/* Active state: underline marker plus filled icon (state morph). */
.mobile70c31-bnav-link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 4px;
  transform: translateX(-50%) scaleX(0);
  width: 20px;
  height: 2px;
  background: var(--mobile70c31-sky);
  transition: transform 0.18s ease;
}
.mobile70c31-bnav-link.mobile70c31-bnav-on {
  color: var(--mobile70c31-sky);
}
.mobile70c31-bnav-link.mobile70c31-bnav-on::after {
  transform: translateX(-50%) scaleX(1);
}
.mobile70c31-bnav-link.mobile70c31-bnav-on .mobile70c31-bnav-ico {
  transform: translateY(-1px) scale(1.08);
}
.mobile70c31-bnav-link.mobile70c31-bnav-on .mobile70c31-fill {
  fill: currentColor;
}

/* ---------- wide-screen framing ---------------------------------------------- */

@media (min-width: 431px) {
  .mobile70c31-page {
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.6);
  }
}

/* Slightly roomier game grid on larger phone canvases. */
@media (min-width: 390px) {
  .mobile70c31-grid { gap: 12px 9px; }
  .mobile70c31-tile-name { font-size: 11.5px; }
  .mobile70c31-hero h1 { font-size: 23px; }
}

@media (max-width: 359px) {
  .mobile70c31-actions { grid-template-columns: 1fr 1fr 44px; }
  .mobile70c31-btn { font-size: 12.5px; }
  .mobile70c31-brand-name { font-size: 13.5px; }
  .mobile70c31-dir-list { grid-template-columns: 1fr; }
}

/* ---------- help-page study surfaces ------------------------------------------ */

.mobile70c31-help-hero {
  margin: 14px 14px 0;
  padding: 16px 14px 15px;
  border: 1px solid var(--mobile70c31-line);
  border-left: 4px solid var(--mobile70c31-sky);
  background: linear-gradient(135deg, var(--mobile70c31-surface) 0%, var(--mobile70c31-bg-deep) 100%);
}

.mobile70c31-help-kicker {
  margin: 0 0 8px;
  font-family: var(--mobile70c31-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mobile70c31-sky);
}

.mobile70c31-help-hero h1 {
  margin: 0 0 10px;
  color: #ffffff;
  font-size: 22px;
  line-height: 1.3;
}

.mobile70c31-help-hero p:last-child { margin-bottom: 0; }

.mobile70c31-help-map {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 12px 0 0;
}

.mobile70c31-help-map article {
  min-width: 0;
  padding: 10px;
  border: 1px solid var(--mobile70c31-line-soft);
  background: var(--mobile70c31-surface-raise);
}

.mobile70c31-help-map article:last-child { grid-column: 1 / -1; }

.mobile70c31-help-map strong {
  display: block;
  margin-bottom: 3px;
  font-family: var(--mobile70c31-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mobile70c31-sky);
  text-transform: uppercase;
}

.mobile70c31-help-map span {
  display: block;
  font-size: 12px;
  line-height: 1.45;
}

.mobile70c31-help-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: mobile70c31-help-step;
}

.mobile70c31-help-steps li {
  counter-increment: mobile70c31-help-step;
  position: relative;
  margin: 0 0 8px;
  padding: 10px 10px 10px 42px;
  border: 1px solid var(--mobile70c31-line-soft);
  background: var(--mobile70c31-surface);
  font-size: 13.5px;
}

.mobile70c31-help-steps li::before {
  content: counter(mobile70c31-help-step, decimal-leading-zero);
  position: absolute;
  left: 10px;
  top: 10px;
  color: var(--mobile70c31-sky);
  font-family: var(--mobile70c31-mono);
  font-size: 12px;
}

.mobile70c31-help-steps li:last-child { margin-bottom: 0; }

.mobile70c31-help-table {
  border: 1px solid var(--mobile70c31-line-soft);
  background: var(--mobile70c31-bg-deep);
}

.mobile70c31-help-row {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 10px;
  padding: 10px 11px;
  border-bottom: 1px dotted var(--mobile70c31-line-soft);
  font-size: 13px;
}

.mobile70c31-help-row:last-child { border-bottom: none; }
.mobile70c31-help-row strong { color: #ffffff; }
.mobile70c31-help-row span { color: var(--mobile70c31-ink); }

.mobile70c31-help-answer {
  margin: 0;
  padding: 12px;
  border: 1px solid var(--mobile70c31-sky);
  background: rgba(135, 206, 235, 0.08);
  color: var(--mobile70c31-ink);
  font-size: 14px;
}

.mobile70c31-help-answer b { color: var(--mobile70c31-sky); }

.mobile70c31-help-checks {
  list-style: none;
  margin: 0;
  padding: 0;
}

.mobile70c31-help-checks li {
  position: relative;
  margin: 0 0 7px;
  padding: 9px 10px 9px 30px;
  border-bottom: 1px solid var(--mobile70c31-line-soft);
  font-size: 13.5px;
}

.mobile70c31-help-checks li::before {
  content: "[ ]";
  position: absolute;
  left: 0;
  top: 9px;
  color: var(--mobile70c31-sky);
  font-family: var(--mobile70c31-mono);
}

.mobile70c31-help-checks li:last-child { margin-bottom: 0; }

.mobile70c31-help-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 13px;
}

.mobile70c31-help-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 9px 12px;
  border: 1px solid var(--mobile70c31-sky);
  background: var(--mobile70c31-sky);
  color: var(--mobile70c31-navy);
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
}

.mobile70c31-help-action:hover { background: #a8daf5; text-decoration: none; }
.mobile70c31-help-action-quiet { background: transparent; color: var(--mobile70c31-ink); border-color: var(--mobile70c31-line); }
.mobile70c31-help-action-quiet:hover { border-color: var(--mobile70c31-sky); color: var(--mobile70c31-sky); }

/* Tips page uses a field-note rhythm instead of the features audit grid. */
.mobile70c31-tip-note {
  margin: 0 0 10px;
  padding: 11px 12px;
  border-left: 3px solid var(--mobile70c31-sky);
  background: var(--mobile70c31-surface);
  font-size: 13.5px;
}

.mobile70c31-tip-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.mobile70c31-tip-card {
  min-width: 0;
  padding: 11px;
  border: 1px solid var(--mobile70c31-line-soft);
  background: var(--mobile70c31-surface-raise);
}

.mobile70c31-tip-card:nth-child(3) { grid-column: 1 / -1; }
.mobile70c31-tip-card h3 { margin: 0 0 5px; color: #ffffff; font-size: 14px; }
.mobile70c31-tip-card p { margin: 0; font-size: 12.5px; }

.mobile70c31-tip-qa {
  margin: 0;
  border-top: 1px solid var(--mobile70c31-line-soft);
}

.mobile70c31-tip-qa div {
  padding: 11px 0;
  border-bottom: 1px dotted var(--mobile70c31-line-soft);
}

.mobile70c31-tip-qa dt {
  margin-bottom: 4px;
  color: var(--mobile70c31-sky);
  font-family: var(--mobile70c31-mono);
  font-size: 12px;
}

.mobile70c31-tip-qa dd { margin: 0; font-size: 13.5px; }

.mobile70c31-tip-sequence {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 5px;
  margin: 0 0 12px;
}

.mobile70c31-tip-sequence span {
  min-height: 68px;
  padding: 8px 5px;
  border-top: 2px solid var(--mobile70c31-sky);
  background: var(--mobile70c31-surface);
  font-family: var(--mobile70c31-mono);
  font-size: 10.5px;
  text-align: center;
}

.mobile70c31-tip-sequence b {
  display: block;
  margin-bottom: 4px;
  color: var(--mobile70c31-sky);
  font-size: 13px;
}

.mobile70c31-tip-takeaways {
  margin: 0;
  padding: 0 0 0 22px;
  font-size: 13.5px;
}

.mobile70c31-tip-takeaways li { margin-bottom: 9px; padding-left: 4px; }
.mobile70c31-tip-takeaways li::marker { color: var(--mobile70c31-sky); font-family: var(--mobile70c31-mono); }

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
  .mobile70c31-tile:hover,
  .mobile70c31-tile:focus-visible { transform: none; }
}

@media (max-width: 359px) {
  .mobile70c31-help-row { grid-template-columns: 1fr; gap: 3px; }
  .mobile70c31-tip-sequence span { min-height: 78px; font-size: 9.5px; }
}