.install-banner {
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px clamp(18px, 4vw, 48px);
  border-bottom: 1px solid var(--border, #dfe1e7);
  background: var(--blue-soft, #e6f3fe);
}

.install-banner:not([hidden]) { display: flex; }
.install-banner-copy, .install-banner-actions { display: flex; align-items: center; gap: 12px; }
.install-banner-copy > span:last-child { display: grid; gap: 2px; }
.install-banner-copy strong { font-size: 14px; }
.install-banner-copy small { color: var(--ink-soft, #615d59); font-size: 12px; }
.install-app-icon { display: grid; flex: 0 0 38px; width: 38px; height: 38px; place-items: center; border-radius: 8px; background: #111; color: #fff; font-size: 12px; font-weight: 800; }
.install-action { min-height: 36px; padding: 0 16px; border: 1px solid var(--blue, #0075de); border-radius: 7px; background: var(--blue, #0075de); color: #fff; font: inherit; font-size: 13px; font-weight: 700; cursor: pointer; }
.install-dismiss { width: 36px; height: 36px; border: 1px solid transparent; background: transparent; color: var(--ink-soft, #615d59); font: inherit; font-size: 24px; cursor: pointer; }
.install-dismiss:hover, .install-dismiss:focus-visible { border-color: var(--border, #dfe1e7); background: #fff; }
.install-guide-card { max-width: 540px; }
.install-step-group { margin-top: 20px; padding: 18px; border: 1px solid var(--border, #dfe1e7); border-radius: 10px; background: var(--surface-subtle, #fafaf9); }
.install-step-group h3 { margin: 0 0 10px; font-size: 15px; }
.install-step-group ol { margin: 0; padding-left: 22px; color: var(--ink-soft, #615d59); font-size: 14px; line-height: 1.75; }
.install-guide-card > .primary-button { width: 100%; margin-top: 22px; }

@media (max-width: 640px) {
  .install-banner:not([hidden]) { align-items: stretch; }
  .install-banner-copy { flex: 1; }
  .install-banner-actions { gap: 4px; }
  .install-action { padding: 0 12px; white-space: nowrap; }
  .install-banner-copy small { display: none; }
  .install-guide-dialog { align-items: end; padding: 0; }
  .install-guide-card { width: 100%; max-height: 92vh; overflow: auto; border-radius: 18px 18px 0 0; }
}