/* 主站廣告版位 — 不影響原頁面 flow，僅 fixed 浮層 */
.site-ad {
  display: block;
  position: relative;
  overflow: hidden;
  border-radius: 12px;
  background: #fff;
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.06);
  text-decoration: none;
  color: inherit;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.site-ad:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.site-ad img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}

.site-ad__media {
  position: relative;
  display: block;
  background: #f9fafb;
}

.site-ad__caption {
  display: block;
  overflow: hidden;
  padding: 8px 10px 10px;
  font-size: 0.78rem;
  line-height: 1.35;
  color: #4b5563;
  text-align: center;
}

.site-ad__caption-track {
  display: inline-block;
  white-space: nowrap;
  vertical-align: top;
  max-width: 100%;
}

.site-ad__caption-text {
  display: inline-block;
  white-space: nowrap;
  vertical-align: top;
}

.site-ad__caption.is-static {
  text-align: center;
}

.site-ad__caption.is-static .site-ad__caption-track {
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-ad__caption.is-marquee {
  text-align: left;
}

.site-ad__caption.is-marquee .site-ad__caption-track {
  display: inline-flex;
  align-items: center;
  gap: 32px;
  max-width: none;
  width: max-content;
  overflow: visible;
  text-overflow: clip;
  will-change: transform;
  animation: site-ad-caption-scroll var(--marquee-duration, 10s) linear infinite;
}

@keyframes site-ad-caption-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(calc(-50% - 16px)); }
}

.site-ad__badge {
  position: absolute;
  right: 8px;
  bottom: 8px;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #6b7280;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(4px);
  line-height: 1.2;
}

/* 右側固定側欄（大螢幕）— 不佔主內容寬度 */
.site-ad-sidebar-wrap {
  position: fixed;
  right: 16px;
  top: 96px;
  width: 160px;
  z-index: 1200;
  pointer-events: none;
}

.site-ad-sidebar-wrap .site-ad {
  pointer-events: auto;
}

/* 內容區橫幅（僅在有廣告時插入） */
.site-ad--inline {
  margin: 20px 0;
}

/* 浮動小卡 */
.site-ad-float-wrap {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 1400;
  width: 168px;
  pointer-events: none;
}

.site-ad-float-wrap.is-hidden {
  display: none;
}

.site-ad-float-wrap .site-ad {
  pointer-events: auto;
  border-radius: 14px;
}

.site-ad-float-wrap .site-ad__caption {
  font-size: 0.72rem;
  padding: 6px 8px 8px;
}

.site-ad-float-wrap .site-ad__badge {
  right: 6px;
  bottom: 6px;
  padding: 1px 5px;
  font-size: 0.52rem;
}

.site-ad-float-close {
  position: absolute;
  top: 0;
  right: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: #fff;
  color: #6b7280;
  font-size: 1.1rem;
  line-height: 1;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
  cursor: pointer;
  pointer-events: auto;
  transform: translate(50%, -50%);
  -webkit-tap-highlight-color: transparent;
}

.site-ad-float-close:hover {
  color: #111827;
  transform: translate(50%, -50%);
}

/* 電腦版加大 */
@media (min-width: 1280px) {
  .site-ad-sidebar-wrap {
    width: 200px;
    right: 20px;
  }

  .site-ad-float-wrap {
    width: 200px;
    right: 20px;
    bottom: 20px;
  }
}

@media (max-width: 1279px) {
  .site-ad-sidebar-wrap {
    display: none;
  }
}

@media (max-width: 768px) {
  .site-ad-float-wrap {
    width: 148px;
    right: 8px;
    bottom: calc(58px + env(safe-area-inset-bottom, 0px) + 8px);
  }

  .site-ad-float-wrap .site-ad {
    border-radius: 12px;
  }

  .site-ad-float-wrap .site-ad__caption {
    font-size: 0.7rem;
    padding: 5px 7px 7px;
  }

  .site-ad-float-wrap .site-ad__badge {
    right: 5px;
    bottom: 5px;
    font-size: 0.5rem;
    padding: 1px 4px;
  }

  .site-ad-float-close {
    width: 22px;
    height: 22px;
    font-size: 0.9rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-ad {
    transition: none;
  }

  .site-ad__caption.is-marquee .site-ad__caption-track {
    animation: none;
    max-width: 100%;
    width: auto;
    overflow: hidden;
    text-overflow: ellipsis;
  }
}