/* 移动端 · 发现新版本提示（固定于底部导航上方） */
.app-update-banner {
    position: fixed;
    left: 0.65rem;
    right: 0.65rem;
    bottom: calc(3.65rem + env(safe-area-inset-bottom, 0px));
    z-index: 1250;
    pointer-events: none;
    opacity: 0;
    transform: translateY(0.75rem);
    transition: opacity 0.22s ease, transform 0.22s ease;
}

.app-update-banner.is-visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.app-update-banner__panel {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
    padding: 0.75rem 0.85rem 0.75rem 0.75rem;
    border-radius: 0.85rem;
    background: linear-gradient(145deg, rgba(42, 32, 22, 0.94), rgba(28, 22, 16, 0.96));
    border: 1px solid rgba(232, 184, 106, 0.42);
    box-shadow: 0 10px 28px rgba(18, 12, 8, 0.28);
    color: #faf6ee;
}

.app-update-banner__head {
    display: flex;
    align-items: flex-start;
    gap: 0.55rem;
    padding-right: 1.85rem;
}

.app-update-banner__close {
    position: absolute;
    top: 0.55rem;
    right: 0.55rem;
    z-index: 2;
    appearance: none;
    border: none;
    width: 1.85rem;
    height: 1.85rem;
    border-radius: 999px;
    display: grid;
    place-items: center;
    font-size: 1.2rem;
    line-height: 1;
    cursor: pointer;
    color: rgba(250, 246, 238, 0.92);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.18);
}

.app-update-banner__close:hover {
    color: #faf6ee;
    background: rgba(255, 255, 255, 0.12);
}

.app-update-banner__icon {
    flex: 0 0 auto;
    width: 2rem;
    height: 2rem;
    border-radius: 0.55rem;
    display: grid;
    place-items: center;
    font-size: 1.05rem;
    background: rgba(232, 184, 106, 0.18);
    border: 1px solid rgba(232, 184, 106, 0.35);
}

.app-update-banner__text {
    flex: 1 1 auto;
    min-width: 0;
}

.app-update-banner__title {
    margin: 0;
    font-size: 0.92rem;
    font-weight: 800;
    letter-spacing: 0.02em;
}

.app-update-banner__msg {
    margin: 0.2rem 0 0;
    font-size: 0.72rem;
    line-height: 1.45;
    color: rgba(250, 246, 238, 0.82);
}

.app-update-banner__ver {
    margin: 0.15rem 0 0;
    font-size: 0.65rem;
    color: rgba(232, 184, 106, 0.88);
    font-variant-numeric: tabular-nums;
}

.app-update-banner__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
}

.app-update-banner__btn {
    appearance: none;
    border: none;
    border-radius: 999px;
    padding: 0.42rem 0.85rem;
    font-size: 0.72rem;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
    line-height: 1.2;
}

.app-update-banner__btn--primary {
    background: linear-gradient(135deg, #e8b86a, #c9923f);
    color: #2a1e12;
}

.app-update-banner__btn--ghost {
    background: rgba(255, 255, 255, 0.08);
    color: rgba(250, 246, 238, 0.88);
    border: 1px solid rgba(255, 255, 255, 0.14);
}

body:not(:has(.hd-mobile-bottom-nav)) .app-update-banner {
    bottom: calc(0.75rem + env(safe-area-inset-bottom, 0px));
}

.app-update-banner.is-modal {
    inset: 0;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 0.75rem;
    padding-bottom: calc(0.75rem + env(safe-area-inset-bottom, 0px));
}

.app-update-banner__backdrop {
    position: fixed;
    inset: 0;
    background: rgba(18, 12, 8, 0.55);
    z-index: -1;
}

.app-update-banner.is-modal .app-update-banner__panel {
    width: min(24rem, 100%);
    box-shadow: 0 16px 40px rgba(18, 12, 8, 0.42);
}

.app-update-banner.is-native-required .app-update-banner__title::after {
    content: '（需更新 App）';
    font-size: 0.78rem;
    font-weight: 700;
    color: #ffb86a;
    margin-left: 0.25rem;
}

@media (min-width: 992px) {
    .app-update-banner {
        left: auto;
        right: 1rem;
        width: min(22rem, calc(100vw - 2rem));
        bottom: 1rem;
    }

    .app-update-banner.is-modal {
        align-items: center;
    }
}