/* 广告系统前端样式 */
.ad-wrapper { margin: 10px 0; text-align: center; }
.ad-item { display: inline-block; max-width: 100%; }
.ad-banner-link { display: block; }
.ad-banner-link img { max-width: 100%; height: auto; border: none; }
.ad-banner-placeholder { background: #f0f0f0; display: flex; align-items: center; justify-content: center; color: #999; font-size: 14px; }
.ad-text-wrapper { padding: 10px; background: #f9f9f9; border-radius: 4px; }
.ad-text-link { text-decoration: none; color: #333; }
.ad-text-title { font-weight: bold; display: block; margin-bottom: 5px; }
.ad-text-content { margin: 5px 0 0; font-size: 14px; color: #666; }
.ad-custom-code { max-width: 100%; overflow: hidden; }
.ad-video-wrapper { position: relative; }
.ad-video-wrapper video { max-width: 100%; }
.ad-video-cta { display: inline-block; margin-top: 10px; padding: 8px 20px; background: #2271b1; color: #fff; text-decoration: none; border-radius: 4px; }
.ad-carousel-wrapper { position: relative; overflow: hidden; }
.ad-carousel-slides { position: relative; }
.ad-carousel-slide { display: none; }
.ad-carousel-slide.active { display: block; }
.ad-carousel-slide img { max-width: 100%; height: auto; }
.ad-carousel-caption { padding: 10px; background: rgba(0,0,0,0.7); color: #fff; text-align: center; }
.ad-carousel-nav { display: flex; justify-content: center; align-items: center; gap: 10px; padding: 10px; }
.ad-carousel-prev, .ad-carousel-next { background: #333; color: #fff; border: none; width: 30px; height: 30px; border-radius: 50%; cursor: pointer; }
.ad-carousel-dot { width: 10px; height: 10px; background: #ccc; border-radius: 50%; display: inline-block; margin: 0 3px; cursor: pointer; }
.ad-carousel-dot.active { background: #2271b1; }