/* ============================================================
   xiabu：横条 330×112（正文下方）
   图片 330×88 原样输出，上下各留 12px 间距
   特效：淡入淡出 + 轻微缩放
   ============================================================ */
.keai-ad-xiabu {
    position: relative;
    width: 330px;                   /* ← 288 → 330 */
    height: 112px;                  /* 88 + 12 + 12，不变 */
    border-radius: 12px;
    overflow: hidden;
    background: #fafafa;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    margin: 8px 0 8px; /* 22:28 2026.10.07 新加上下间距 */
}
.keai-ad-xiabu .ad-item {
    position: absolute;
    top: 12px;                       /* 图片离容器顶部 12px，不变 */
    left: 0;
    width: 330px;                   /* ← 288 → 330 */
    height: 88px;                   /* 图片原始高度，不动 */
    display: block;
    opacity: 0;
    pointer-events: none;
    will-change: transform, opacity;
}
.keai-ad-xiabu .ad-item img {
    width: 330px;                   /* ← 288 → 330，不拉伸 */
    height: 88px;                   /* 高度不动 */
    display: block;
    border-radius: 8px;
}

@keyframes keai_xiabu_fade {
    0%    { opacity: 0; transform: scale(1.06); }
    2%    { opacity: 1; transform: scale(1); }
    10%   { opacity: 1; transform: scale(1); }
    12.5% { opacity: 0; transform: scale(0.96); }
    100%  { opacity: 0; transform: scale(1.06); }
}

.keai-ad-xiabu .ad-item-0 { animation: keai_xiabu_fade 32s ease-in-out infinite; animation-delay: 0s; }
.keai-ad-xiabu .ad-item-1 { animation: keai_xiabu_fade 32s ease-in-out infinite; animation-delay: 4s; }
.keai-ad-xiabu .ad-item-2 { animation: keai_xiabu_fade 32s ease-in-out infinite; animation-delay: 8s; }
.keai-ad-xiabu .ad-item-3 { animation: keai_xiabu_fade 32s ease-in-out infinite; animation-delay: 12s; }
.keai-ad-xiabu .ad-item-4 { animation: keai_xiabu_fade 32s ease-in-out infinite; animation-delay: 16s; }
.keai-ad-xiabu .ad-item-5 { animation: keai_xiabu_fade 32s ease-in-out infinite; animation-delay: 20s; }
.keai-ad-xiabu .ad-item-6 { animation: keai_xiabu_fade 32s ease-in-out infinite; animation-delay: 24s; }
.keai-ad-xiabu .ad-item-7 { animation: keai_xiabu_fade 32s ease-in-out infinite; animation-delay: 28s; }