#mv-pwa-install-overlay {
  position: fixed;
  inset: 0;
  z-index: 2147483000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(7, 24, 42, .68);
  opacity: 0;
  visibility: hidden;
  transition: opacity .22s ease, visibility .22s ease;
  font-family: Arial, Helvetica, sans-serif;
}

#mv-pwa-install-overlay.mv-pwa-visible {
  opacity: 1;
  visibility: visible;
}

.mv-pwa-card {
  position: relative;
  width: min(430px, 100%);
  max-height: min(720px, calc(100vh - 32px));
  overflow-y: auto;
  box-sizing: border-box;
  padding: 30px 24px 22px;
  border-radius: 22px;
  background: #fff;
  color: #172b3d;
  text-align: center;
  box-shadow: 0 24px 70px rgba(0, 0, 0, .28);
  transform: translateY(18px) scale(.98);
  transition: transform .22s ease;
}

.mv-pwa-visible .mv-pwa-card {
  transform: translateY(0) scale(1);
}

.mv-pwa-close {
  position: absolute;
  top: 10px;
  right: 12px;
  width: 38px;
  height: 38px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: #eef3f7;
  color: #29455e;
  font-size: 28px;
  line-height: 36px;
  cursor: pointer;
}

.mv-pwa-logo {
  display: block;
  width: 84px;
  height: 84px;
  margin: 0 auto 16px;
  border-radius: 20px;
  object-fit: cover;
  box-shadow: 0 8px 24px rgba(19, 112, 174, .2);
}

.mv-pwa-copy h2 {
  margin: 0 18px 10px;
  color: #102f49;
  font-size: 24px;
  line-height: 1.18;
}

.mv-pwa-copy p {
  margin: 0 auto 20px;
  color: #53697b;
  font-size: 16px;
  line-height: 1.45;
}

.mv-pwa-action,
.mv-pwa-later {
  display: block;
  width: 100%;
  border: 0;
  cursor: pointer;
  font-weight: 700;
}

.mv-pwa-action {
  min-height: 52px;
  margin-top: 18px;
  border-radius: 14px;
  background: #087bbf;
  color: #fff;
  font-size: 17px;
  box-shadow: 0 8px 20px rgba(8, 123, 191, .25);
}

.mv-pwa-later {
  min-height: 44px;
  margin-top: 7px;
  background: transparent;
  color: #607589;
  font-size: 14px;
}

.mv-pwa-steps {
  display: grid;
  gap: 9px;
  margin: 4px 0 2px;
  padding: 14px;
  border-radius: 14px;
  background: #eef7fc;
  text-align: left;
  transition: box-shadow .2s ease, background .2s ease;
}

.mv-pwa-ios-guide[hidden] {
  display: none !important;
}

.mv-pwa-ios-guide {
  animation: mv-pwa-guide-in .22s ease both;
}

.mv-pwa-ios-notice {
  margin: 2px 0 12px;
  padding: 12px 13px;
  border: 1px solid #b8def4;
  border-radius: 12px;
  background: #f3faff;
  color: #29455e;
  font-size: 14px;
  line-height: 1.4;
}

.mv-pwa-browser-badge {
  display: inline-block;
  margin: 0 0 9px;
  padding: 6px 10px;
  border-radius: 999px;
  background: #dff2fd;
  color: #075f91;
  font-size: 13px;
  font-weight: 700;
}

.mv-pwa-browser-fallback {
  margin: 10px 0 0;
  color: #607589;
  font-size: 13px;
  line-height: 1.4;
}

.mv-pwa-action-guide {
  background: #315b75;
  box-shadow: none;
  cursor: default;
}

.mv-pwa-guide-open .mv-pwa-share {
  animation: mv-pwa-share-pulse 1.1s ease-in-out infinite;
}

@keyframes mv-pwa-guide-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes mv-pwa-share-pulse {
  0%, 100% {
    transform: translateY(0) scale(1);
  }
  50% {
    transform: translateY(-4px) scale(1.12);
  }
}

.mv-pwa-steps div {
  display: flex;
  align-items: center;
  gap: 9px;
  color: #29455e;
  font-size: 14px;
  line-height: 1.35;
}

.mv-pwa-steps div > span:first-child {
  flex: 0 0 25px;
  height: 25px;
  border-radius: 50%;
  background: #087bbf;
  color: #fff;
  text-align: center;
  font-weight: 700;
  line-height: 25px;
}

.mv-pwa-share {
  margin-left: auto;
  color: #087bbf;
  font-size: 22px;
  font-weight: 700;
}

.mv-pwa-help {
  margin: 4px 0;
  padding: 13px;
  border-radius: 12px;
  background: #eef7fc;
  color: #3d5c73;
  font-size: 14px;
  line-height: 1.4;
}

.mv-pwa-highlight {
  background: #e0f3ff;
  box-shadow: 0 0 0 3px rgba(8, 123, 191, .24);
}

@media (max-width: 480px) {
  #mv-pwa-install-overlay {
    align-items: flex-end;
    padding: 10px;
  }

  .mv-pwa-card {
    width: 100%;
    padding: 26px 20px 16px;
    border-radius: 22px 22px 16px 16px;
  }

  .mv-pwa-logo {
    width: 72px;
    height: 72px;
  }

  .mv-pwa-copy h2 {
    font-size: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  #mv-pwa-install-overlay,
  .mv-pwa-card {
    transition: none;
  }
}