.risesong-install-card {
  position: fixed;
  z-index: 99999;
  right: 18px;
  bottom: 18px;
  width: min(420px, calc(100vw - 36px));
  padding: 18px;
  border: 1px solid rgba(99, 56, 220, 0.16);
  border-radius: 24px;
  color: #18213d;
  background: rgba(255, 255, 255, 0.97);
  box-shadow:
    0 24px 70px rgba(35, 42, 105, 0.24),
    0 4px 18px rgba(35, 42, 105, 0.10);
  backdrop-filter: blur(18px);
  transform: translateY(30px);
  opacity: 0;
  visibility: hidden;
  transition:
    transform 0.28s ease,
    opacity 0.28s ease,
    visibility 0.28s ease;
}

.risesong-install-card.is-visible {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.risesong-install-close {
  position: absolute;
  top: 10px;
  left: 10px;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  color: #5f6881;
  background: #eef1fa;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}

.risesong-install-content {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 15px;
  align-items: center;
}

.risesong-install-icon {
  width: 72px;
  height: 72px;
  display: block;
  border-radius: 20px;
  object-fit: cover;
  box-shadow: 0 10px 26px rgba(93, 55, 211, 0.26);
}

.risesong-install-text {
  min-width: 0;
  padding-left: 26px;
}

.risesong-install-title {
  margin: 0 0 5px;
  color: #18213d;
  font-size: 19px;
  font-weight: 900;
  line-height: 1.25;
}

.risesong-install-description {
  margin: 0;
  color: #606982;
  font-size: 14px;
  line-height: 1.55;
}

.risesong-install-actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

.risesong-install-button {
  flex: 1;
  min-height: 46px;
  padding: 11px 18px;
  border: 0;
  border-radius: 14px;
  color: #fff;
  background: linear-gradient(135deg, #3159e8, #743ce2);
  box-shadow: 0 10px 24px rgba(94, 56, 214, 0.24);
  font: inherit;
  font-weight: 900;
  cursor: pointer;
}

.risesong-install-button:hover {
  filter: brightness(1.05);
}

.risesong-install-later {
  min-height: 46px;
  padding: 11px 16px;
  border: 1px solid #dce1ef;
  border-radius: 14px;
  color: #535d77;
  background: #fff;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.risesong-ios-guide {
  display: none;
  margin-top: 15px;
  padding: 13px 14px;
  border-radius: 14px;
  color: #4f5871;
  background: #f2f4fb;
  font-size: 14px;
  line-height: 1.7;
}

.risesong-ios-guide.is-visible {
  display: block;
}

.risesong-share-symbol {
  display: inline-grid;
  place-items: center;
  min-width: 29px;
  height: 29px;
  margin: 0 3px;
  border-radius: 8px;
  color: #3159e8;
  background: #fff;
  font-size: 18px;
  font-weight: 900;
  vertical-align: middle;
}

@media (max-width: 560px) {
  .risesong-install-card {
    right: 12px;
    bottom: 12px;
    width: calc(100vw - 24px);
    padding: 16px;
    border-radius: 22px;
  }

  .risesong-install-content {
    grid-template-columns: 62px 1fr;
    gap: 12px;
  }

  .risesong-install-icon {
    width: 62px;
    height: 62px;
    border-radius: 17px;
  }

  .risesong-install-title {
    font-size: 17px;
  }

  .risesong-install-description {
    font-size: 13px;
  }
}

@media (display-mode: standalone) {
  .risesong-install-card {
    display: none !important;
  }
}