/* 广告位：1125 × 168，完整展示不裁切 */
.header-ads {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin: 10px 0 22px;
}

.ad-banner {
    display: block;
    width: 100%;
    aspect-ratio: 1125 / 168;
    border-radius: 20px;
    overflow: hidden;
    background: #fff3e4;
    border: 1px solid #ffe2be;
    box-shadow: 0 8px 18px -10px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s;
    text-decoration: none;
}

.ad-banner:hover {
    transform: translateY(-2px);
}

.ad-banner img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    display: block;
    background: #fffaf2;
}

@media (max-width: 800px) {
    .ad-banner {
        border-radius: 14px;
    }
}