.rtwd-install-prompt {
  --rtwd-blue: #087dff;
  --rtwd-red: #ff263b;
  position: fixed;
  z-index: 10050;
  left: 18px;
  bottom: 90px;
  width: min(390px, calc(100vw - 36px));
  max-height: calc(100vh - 108px);
  overflow-y: auto;
  box-sizing: border-box;
  padding: 20px;
  color: #fff;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 18px;
  background:
    radial-gradient(circle at 4% 0%, rgba(8,125,255,.38), transparent 42%),
    radial-gradient(circle at 100% 100%, rgba(255,38,59,.38), transparent 46%),
    #10131a;
  box-shadow: 0 18px 50px rgba(0,0,0,.48);
  font-family: Arial, Helvetica, sans-serif;
  animation: rtwd-install-in .35s ease-out both;
}

.rtwd-install-prompt[hidden] {
  display: none !important;
}

.rtwd-install-close {
  position: absolute;
  top: 9px;
  right: 11px;
  width: 34px;
  height: 34px;
  padding: 0;
  color: #fff;
  border: 0;
  background: transparent;
  font-size: 27px;
  font-weight: 300;
  line-height: 32px;
  cursor: pointer;
}

.rtwd-install-heading {
  display: flex;
  align-items: center;
  gap: 13px;
  padding-right: 25px;
}

.rtwd-install-icon {
  flex: 0 0 58px;
  width: 58px;
  height: 58px;
  border-radius: 13px;
  object-fit: cover;
  box-shadow: 0 0 0 1px rgba(255,255,255,.15), 0 7px 16px rgba(0,0,0,.36);
}

.rtwd-install-heading strong,
.rtwd-install-heading span {
  display: block;
}

.rtwd-install-heading strong {
  margin-bottom: 4px;
  font-size: 17px;
  line-height: 1.2;
}

.rtwd-install-heading span {
  color: #c9cfdd;
  font-size: 13px;
  line-height: 1.35;
}

.rtwd-install-benefits {
  margin: 16px 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  line-height: 1.55;
}

.rtwd-install-benefits li {
  position: relative;
  padding-left: 18px;
}

.rtwd-install-benefits li::before {
  content: "";
  position: absolute;
  left: 1px;
  top: .62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--rtwd-blue), var(--rtwd-red));
  box-shadow: 0 0 8px rgba(8,125,255,.75);
}

.rtwd-install-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.rtwd-install-actions button {
  min-height: 42px;
  padding: 10px 14px;
  border: 0;
  border-radius: 11px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}

.rtwd-install-later {
  color: #fff;
  background: rgba(255,255,255,.14);
}

.rtwd-install-now {
  color: #fff;
  background: linear-gradient(105deg, var(--rtwd-blue), #7857ff 48%, var(--rtwd-red));
  box-shadow: 0 8px 22px rgba(54,79,255,.28);
}

.rtwd-install-actions button:focus-visible,
.rtwd-install-close:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 2px;
}

@keyframes rtwd-install-in {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 480px) {
  .rtwd-install-prompt {
    left: 10px;
    right: 10px;
    bottom: 98px;
    width: auto;
    max-height: calc(100vh - 108px);
    padding: 17px;
    border-radius: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .rtwd-install-prompt {
    animation: none;
  }
}