.activity-page .activity-carousel-wrap {
    position: relative;
    width: 100%;
    margin-bottom: 20px;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-elevated);
    box-shadow: var(--shadow-sm);
}

.activity-page .activity-carousel {
    display: flex;
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform;
}

.activity-page .activity-slide {
    position: relative;
    min-width: 100%;
}

.activity-page .activity-card {
    position: relative;
    display: block;
    min-height: 300px;
    padding: 36px 40px;
    overflow: hidden;
    border-radius: 7px;
    background-position: center;
    background-size: cover;
    color: #fff;
    text-decoration: none;
}

.activity-page .activity-tag {
    display: inline-flex;
    align-items: center;
    min-height: 26px;
    margin-bottom: 16px;
    padding: 4px 10px;
    border: 1px solid rgba(255, 255, 255, 0.24);
    border-radius: 6px;
    background: rgba(15, 23, 42, 0.22);
    font-size: 12px;
    font-weight: 700;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.activity-page .activity-title {
    max-width: 680px;
    margin: 0 0 12px;
    font-size: 28px;
    font-weight: 800;
    line-height: 1.3;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.activity-page .activity-desc {
    max-width: 600px;
    margin: 0 0 24px;
    font-size: 15px;
    line-height: 1.65;
    opacity: 0.92;
}

.activity-page .activity-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    padding: 9px 20px;
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.16);
    color: #1f2937;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.activity-page .activity-card:hover .activity-btn {
    transform: translateY(-2px);
    box-shadow: 0 6px 22px rgba(0, 0, 0, 0.22);
}

.activity-page .activity-dots {
    position: absolute;
    bottom: 16px;
    left: 50%;
    z-index: 5;
    display: flex;
    gap: 8px;
    transform: translateX(-50%);
}

.activity-page .activity-dot {
    width: 8px;
    height: 8px;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.46);
    cursor: pointer;
    transition: width 0.2s ease, background 0.2s ease;
}

.activity-page .activity-dot.active {
    width: 24px;
    border-radius: 4px;
    background: #fff;
}

.activity-page .activity-arrow {
    position: absolute;
    top: 50%;
    z-index: 5;
    display: none;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, 0.55);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
    color: #1f2937;
    cursor: pointer;
    font-size: 18px;
    transform: translateY(-50%);
    transition: background 0.2s ease, transform 0.2s ease;
}

.activity-page .activity-arrow:hover {
    background: #fff;
    transform: translateY(-50%) scale(1.05);
}

.activity-page .activity-arrow--prev { left: 14px; }
.activity-page .activity-arrow--next { right: 14px; }

.activity-page .activity-empty {
    display: flex;
    min-height: 260px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 64px 20px;
    background: var(--bg-subtle);
    color: var(--text-secondary);
    text-align: center;
}

.activity-page .activity-empty .icon {
    margin-bottom: 16px;
    font-size: 48px;
    opacity: 0.72;
}

.activity-page .activity-empty p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 16px;
}

.activity-page .activity-empty .activity-empty-hint {
    margin-top: 6px;
    color: var(--text-muted);
    font-size: 13px;
}

@media (min-width: 769px) {
    .activity-page .activity-arrow { display: flex; }
    .activity-page .activity-card { min-height: 360px; padding: 48px 56px; }
    .activity-page .activity-title { font-size: 34px; }
    .activity-page .activity-desc { font-size: 16px; }
}

@media (max-width: 480px) {
    .activity-page .activity-carousel-wrap { margin-bottom: 14px; }
    .activity-page .activity-card { min-height: 250px; padding: 26px 22px 42px; }
    .activity-page .activity-title { font-size: 22px; }
    .activity-page .activity-desc { margin-bottom: 18px; font-size: 14px; }
    .activity-page .activity-btn { min-height: 38px; padding: 8px 16px; font-size: 13px; }
    .activity-page .activity-empty { min-height: 220px; padding: 48px 18px; }
}

@media (prefers-reduced-motion: reduce) {
    .activity-page .activity-carousel,
    .activity-page .activity-btn,
    .activity-page .activity-arrow,
    .activity-page .activity-dot {
        transition: none;
    }
}