.donate-nudge {
    position: fixed;
    left: 18px;
    bottom: 18px;
    z-index: 70;
    width: min(280px, calc(100vw - 36px));
    padding: 16px 16px 14px;
    border-radius: 16px;
    background: #0a1f44;
    color: #f8fafc;
    box-shadow: 0 16px 40px rgba(10, 31, 68, .35);
    animation: donate-nudge-in .45s ease;
}
.donate-nudge[hidden] { display: none !important; }
.donate-nudge-kicker { margin: 0; font-size: .7rem; letter-spacing: .08em; text-transform: uppercase; color: #75c7ed; }
.donate-nudge-title { margin: .25rem 0 .35rem; font-size: 1.15rem; font-weight: 700; }
.donate-nudge-text { margin: 0 0 .8rem; font-size: .86rem; line-height: 1.4; color: #dbe4f0; }
.donate-nudge-go {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    background: #75c7ed;
    color: #0a1f44;
    font-weight: 700;
    text-decoration: none;
    border-radius: 999px;
    padding: .45rem .9rem;
}
.donate-nudge-go:hover { filter: brightness(1.05); }
.donate-nudge-x {
    position: absolute;
    top: 8px;
    right: 10px;
    border: 0;
    background: transparent;
    color: #9fb0c9;
    font-size: 1.2rem;
    line-height: 1;
    cursor: pointer;
}
@keyframes donate-nudge-in {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: none; }
}
@media (max-width: 768px) {
    .donate-nudge { left: 12px; bottom: calc(78px + env(safe-area-inset-bottom)); width: min(240px, calc(100vw - 88px)); padding: 12px; }
    body.page-book .donate-nudge { bottom: calc(148px + env(safe-area-inset-bottom)); }
    body.page-donate .donate-nudge, body.page-book .donate-nudge { display: none !important; }
}
@media (max-width: 360px) {
    .donate-nudge { width: min(200px, calc(100vw - 78px)); font-size: .92rem; }
}
@media (prefers-reduced-motion: reduce) {
    .donate-nudge { animation: none; }
}