/* 广告位 */
.ad-slot[hidden] { display: none !important; }
.ad-slot { position: relative; }
.ad-slot__inner { position: relative; }
.ad-slot__label { position: absolute; top: 6px; right: 8px; padding: 1px 6px; border-radius: 4px; background: rgba(255, 255, 255, .85); color: var(--muted); font-size: 10px; letter-spacing: .1em; }
.ad-slot--banner { max-width: 1280px; width: 100%; margin: 18px auto 0; padding: 0 24px; }
.ad-slot--banner .ad-slot__inner { padding: 16px; border: 1px solid var(--bd); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow-sm); }
.ad-slot--inline { margin: 26px 0 0; padding: 16px; border: 1px dashed var(--bd-strong); border-radius: var(--radius); background: linear-gradient(160deg, #F5FFFD, #EEF8FF); }
.ad-slot--sidebar { padding: 18px; border: 1px solid var(--bd); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow); }
.ad-slot--card { display: flex; flex-direction: column; justify-content: center; min-height: 120px; padding: 18px; border: 1px dashed var(--bd-strong); border-radius: var(--radius); background: linear-gradient(160deg, #F5FFFD, #EEF8FF); color: var(--ink); }

/* 搜索区 */
.search-section { position: sticky; top: 16px; z-index: 100; margin: 22px 0 16px; }
.search-field { display: flex; align-items: center; padding: 6px 6px 6px 18px; border: 1px solid rgba(255, 255, 255, .8); border-radius: var(--radius); background: rgba(255, 255, 255, .85); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); box-shadow: 0 8px 24px -10px rgba(31, 59, 58, .15); transition: border-color .2s, box-shadow .2s, background .2s; }
.search-field:focus-within { border-color: var(--accent); background: var(--surface); box-shadow: 0 0 0 4px rgba(46, 196, 182, .15), 0 14px 30px -16px rgba(46, 196, 182, .65); }
.search-field__icon { margin-right: 10px; font-size: .95rem; color: var(--muted); transition: color .2s, transform .2s; }
.search-field:focus-within .search-field__icon { color: var(--accent-deep); transform: scale(1.06); }
.search-box { flex: 1; min-width: 0; padding: 13px 0; border: 0; outline: 0; background: transparent; color: var(--ink); font-size: .95rem; }
.search-box::placeholder { color: var(--muted); opacity: .85; }

/* 统计条 & 空状态 */
.stats { display: inline-flex; align-items: center; gap: 4px; margin-bottom: 22px; padding: .42rem .9rem; border: 1px solid var(--bd); border-radius: var(--radius-pill); background: var(--surface); color: var(--muted); font-size: .78rem; }
.stats__count { color: var(--accent-deep); font-weight: 700; }
.empty-state { grid-column: 1/-1; padding: 56px 22px; border: 1px dashed var(--bd-strong); border-radius: var(--radius); background: var(--surface); text-align: center; }
.empty-state__icon { margin-bottom: 10px; font-size: 2.2rem; line-height: 1; color: #8FD4CC; }
.empty-state__title { margin-bottom: 6px; font-family: var(--font-title); font-size: 1rem; font-weight: 700; }
.empty-state__hint { color: var(--muted); font-size: .82rem; }

/* 卡片网格 */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.card { position: relative; display: flex; flex-direction: column; overflow: hidden; border: 1px solid var(--bd); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow-sm); color: inherit; transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.card:hover { transform: translateY(-4px); border-color: #B9E4DD; box-shadow: 0 20px 36px -18px rgba(46, 196, 182, .6); }
.card::after { content: ""; position: absolute; top: 14px; right: 14px; width: 10px; height: 10px; border-radius: 50%; background: linear-gradient(135deg, var(--accent), var(--accent-2)); opacity: .7; pointer-events: none; }
.card-cover { position: relative; display: flex; align-items: center; justify-content: center; aspect-ratio: 16/10; overflow: hidden; background: linear-gradient(135deg, #E8F9F5, #EAF4FF); }
.card-cover__ph { position: absolute; font-size: 2rem; color: #8FD4CC; opacity: .8; }
.card-cover img { position: relative; z-index: 1; width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .3s ease; }
.card:hover .card-cover img { transform: scale(1.05); }
.card-body { padding: 16px; }
.card-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; min-height: 20px; }
.card-tag { font-size: .68rem; padding: 2px 7px; background: var(--accent-soft); color: var(--accent-deep); border-radius: 4px; font-weight: 600; line-height: 1.4; letter-spacing: .02em; }
.card-title { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; min-height: 2.8em; font-size: .95rem; font-weight: 700; line-height: 1.45; color: var(--ink); }
.card-id { color: var(--muted); font-weight: 500; margin-right: 4px; font-size: .88rem; }
.card-meta { display: flex; align-items: center; gap: 6px; margin-top: 12px; color: var(--muted); font-size: .78rem; }
.card-meta i { font-size: .8rem; opacity: .7; }

/* 分页 */
.pagination { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin: 34px 0 10px; }
.page-btn { display: inline-flex; align-items: center; justify-content: center; min-width: 40px; height: 40px; padding: 0 14px; border: 1px solid var(--bd); border-radius: var(--radius-pill); background: var(--surface); color: var(--ink); font-size: .8rem; font-weight: 600; line-height: 1; cursor: pointer; user-select: none; transition: background .16s, border-color .16s, color .16s, box-shadow .16s, transform .16s; }
.page-btn:hover:not(.disabled):not(.active) { border-color: var(--accent); background: rgba(46, 196, 182, .07); color: var(--accent-deep); transform: translateY(-1px); }
.page-btn.active { border-color: transparent; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: var(--accent-ink); box-shadow: 0 6px 16px -6px rgba(46, 196, 182, .7); cursor: default; }
.page-btn.disabled { opacity: .42; cursor: not-allowed; }

/* 回到顶部 */
.back-to-top { position: fixed; bottom: 40px; right: 40px; width: 48px; height: 48px; border-radius: 50%; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; display: flex; align-items: center; justify-content: center; box-shadow: 0 6px 16px -4px rgba(46, 196, 182, .6); cursor: pointer; opacity: 0; visibility: hidden; transition: all .3s; z-index: 1000; border: none; font-size: 1.1rem; }
.back-to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { transform: translateY(-3px); box-shadow: 0 10px 20px -6px rgba(46, 196, 182, .8); }

/* 组件响应式 */
@media (max-width: 768px) {
  .ad-slot--banner { padding: 0 16px; }
  .search-section { top: 0; margin: 10px -10px 0; padding: 10px; background: rgba(240, 251, 249, .95); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--bd); z-index: 99; }
  .search-field { padding: 2px 2px 2px 12px; border-radius: 12px; background: var(--surface); box-shadow: none; border-color: var(--bd); }
  .search-field__icon { font-size: .85rem; margin-right: 6px; }
  .search-box { padding: 8px 0; font-size: .85rem; }
  .stats { margin: 10px 0 8px; padding: .25rem .6rem; font-size: .65rem; border: none; background: transparent; }
  .grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .card { border-radius: 12px; border: 1px solid rgba(207, 237, 232, .6); }
  .card::after { width: 6px; height: 6px; top: 8px; right: 8px; opacity: .5; }
  .card-cover { aspect-ratio: 4/3; }
  .card-cover__ph { font-size: 1.2rem; }
  .card-body { padding: 8px 10px; }
  .card-tags { margin-bottom: 4px; gap: 4px; flex-wrap: nowrap; overflow: hidden; min-height: auto; }
  .card-tag { font-size: .58rem; padding: 1px 4px; white-space: nowrap; border-radius: 2px; }
  .card-id { display: none; }
  .card-title { font-size: .82rem; line-height: 1.4; min-height: 2.3em; -webkit-line-clamp: 2; }
  .card-meta { display: none; }
  .page-btn { min-width: 30px; height: 30px; padding: 0 8px; font-size: .7rem; margin-bottom: 4px; }
  .back-to-top { bottom: 20px; right: 20px; width: 36px; height: 36px; font-size: .9rem; }
  .ad-slot--sidebar { padding: 14px; }
}
@media (max-width: 360px) {
  .grid { gap: 6px; }
  .card-body { padding: 6px 8px; }
  .card-title { font-size: .76rem; }
  .card-tag { font-size: .55rem; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
  .card:hover { transform: none; }
}