*,
*::before,
*::after{
  box-sizing:border-box;
}

.pb-detail-wrap{
  max-width:1100px;
  margin:0 auto;
  padding:18px 14px 28px;
}

.pb-breadcrumb{
  font-size:12px;
  color:#666;
  margin:0 0 14px;
}

.pb-detail-grid{
  display:grid;
  grid-template-columns:320px 1fr;
  gap:18px;
}

.pb-cover-box,
.pb-meta-box,
.pb-section{
  border:1px solid #e7e7e7;
  border-radius:12px;
  background:#fff;
}

.pb-cover-box{
  overflow:hidden;
}

.pb-cover-box .img{
  width:100%;
  aspect-ratio:3/4;
  background:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
}

.pb-cover-box img{
  width:100%;
  height:100%;
  object-fit:contain;
  display:block;
}

.pb-cover-empty{
  color:#999;
  font-size:12px;
}

.pb-meta-box{
  padding:14px;
}

.pb-title{
  margin:0 0 10px;
  font-size:22px;
  line-height:1.25;
  color:#111;
}

.pb-kv{
  margin:0;
  padding:0;
  list-style:none;
}

.pb-kv li{
  display:flex;
  gap:10px;
  padding:6px 0;
  border-top:1px solid #f0f0f0;
}

.pb-kv li:first-child{
  border-top:none;
  padding-top:0;
}

.pb-k{
  width:120px;
  color:#666;
  font-size:12px;
  flex:0 0 120px;
}

.pb-v{
  flex:1;
  color:#111;
  font-size:13px;
  min-width:0;
  word-break:break-word;
}

.pb-section{
  margin-top:16px;
  padding:14px;
}

.pb-section h3{
  margin:0 0 12px;
  font-size:14px;
  line-height:1.35;
  color:#111;
}

.pb-muted{
  color:#666;
  font-size:12px;
  line-height:1.5;
  margin:0;
}

.pb-actions{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-top:12px;
}

.pb-actions a{
  display:inline-block;
  padding:7px 10px;
  border:1px solid #ddd;
  border-radius:8px;
  text-decoration:none;
  color:#111;
  background:#fff;
  font-size:12px;
  transition:border-color .18s ease, background .18s ease, transform .18s ease;
}

.pb-actions a:hover{
  border-color:#cfcfcf;
  background:#fafafa;
  transform:translateY(-1px);
}



.pb-cover-placeholders{
  display:flex;
  flex-direction:column;
  gap:14px;
  padding:14px;
  border-top:1px solid #efefef;
  background:#fcfcfc;
}

.pb-placeholder-card{
  border:1px solid #e8e8e8;
  border-radius:14px;
  padding:14px 16px;
  background:#fff;
}

.pb-placeholder-label{
  margin:0 0 8px;
  font-size:14px;
  line-height:1.35;
  color:#666;
}

.pb-placeholder-value{
  margin:0;
  font-size:18px;
  line-height:1.3;
  font-weight:700;
  color:#111;
}

.pb-placeholder-note{
  margin-top:6px;
  font-size:13px;
  line-height:1.55;
  color:#666;
}

.pb-quick-facts{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin:16px 0 2px;
}

.pb-fact-pill{
  display:inline-flex;
  align-items:center;
  min-height:38px;
  padding:8px 14px;
  border:1px solid #e6e6e6;
  border-radius:999px;
  background:#fafafa;
  color:#222;
  font-size:14px;
  line-height:1.25;
  white-space:nowrap;
}

.pb-kv-primary{
  margin-bottom:4px;
}

/* Samples */

.pb-samples-wrap{
  position:relative;
}

.pb-samples-shell{
  position:relative;
  padding:0 42px;
}

.pb-samples-track-wrap{
  overflow:hidden;
}

.pb-samples-track{
  display:flex;
  gap:12px;
  transition:transform .25s ease;
  will-change:transform;
}

.pb-sample-item{
  flex:0 0 calc((100% - 36px) / 4);
  min-width:0;
}

.pb-sample-btn{
  display:block;
  width:100%;
  padding:0;
  border:1px solid #e5e5e5;
  border-radius:10px;
  background:#fff;
  overflow:hidden;
  cursor:pointer;
  transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.pb-sample-btn:hover{
  transform:translateY(-2px);
  border-color:#dbdbdb;
  box-shadow:0 6px 18px rgba(0,0,0,.06);
}

.pb-sample-btn:focus-visible{
  outline:2px solid #3b82f6;
  outline-offset:2px;
}

.pb-sample-thumb{
  position:relative;
  width:100%;
  height:220px;
  background:#fafafa;
  overflow:hidden;
  display:block;
}

.pb-sample-thumb img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}

.pb-sample-caption{
  padding:8px 10px;
  font-size:11px;
  color:#666;
  text-align:center;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
  border-top:1px solid #f2f2f2;
  line-height:1.35;
}

.pb-samples-nav{
  position:absolute;
  top:50%;
  transform:translateY(-50%);
  width:32px;
  height:32px;
  border:1px solid #ddd;
  border-radius:999px;
  background:#fff;
  color:#222;
  display:flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  z-index:2;
  box-shadow:0 1px 4px rgba(0,0,0,.08);
  transition:background .18s ease, border-color .18s ease, transform .18s ease;
}

.pb-samples-nav:hover:not([disabled]){
  background:#fafafa;
  border-color:#cfcfcf;
}

.pb-samples-nav:focus-visible{
  outline:2px solid #3b82f6;
  outline-offset:2px;
}

.pb-samples-nav[disabled]{
  opacity:.35;
  cursor:default;
}

.pb-samples-prev{
  left:0;
}

.pb-samples-next{
  right:0;
}

/* Lightbox */

.pb-lightbox{
  position:fixed;
  inset:0;
  background:rgba(0,0,0,.82);
  display:none;
  align-items:center;
  justify-content:center;
  z-index:99999;
  padding:24px;
}

.pb-lightbox.is-open{
  display:flex;
}

.pb-lightbox-inner{
  position:relative;
  width:min(1100px, 100%);
  height:min(85vh, 900px);
  display:flex;
  align-items:center;
  justify-content:center;
}

.pb-lightbox-stage{
  width:100%;
  height:100%;
  display:flex;
  align-items:center;
  justify-content:center;
}

.pb-lightbox-stage img{
  max-width:100%;
  max-height:100%;
  object-fit:contain;
  display:block;
  box-shadow:0 10px 35px rgba(0,0,0,.35);
  background:#111;
}

.pb-lightbox-close{
  position:absolute;
  top:-8px;
  right:-8px;
  width:36px;
  height:36px;
  border:none;
  border-radius:999px;
  background:#fff;
  color:#111;
  font-size:20px;
  line-height:1;
  cursor:pointer;
  transition:transform .18s ease, background .18s ease;
}

.pb-lightbox-close:hover{
  background:#f7f7f7;
  transform:scale(1.04);
}

.pb-lightbox-nav{
  position:absolute;
  top:50%;
  transform:translateY(-50%);
  width:42px;
  height:42px;
  border:none;
  border-radius:999px;
  background:rgba(255,255,255,.94);
  color:#111;
  font-size:24px;
  line-height:1;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:center;
  transition:transform .18s ease, background .18s ease;
}

.pb-lightbox-nav:hover{
  background:#fff;
  transform:translateY(-50%) scale(1.04);
}

.pb-lightbox-prev{
  left:10px;
}

.pb-lightbox-next{
  right:10px;
}

.pb-lightbox-meta{
  position:absolute;
  left:0;
  right:0;
  bottom:-6px;
  text-align:center;
  color:#fff;
  font-size:12px;
  line-height:1.45;
  padding-top:10px;
}

/* Videos */

.pb-video-wrap{
  position:relative;
}

.pb-video-shell{
  position:relative;
  padding:0 42px;
}

.pb-video-track-wrap{
  overflow:hidden;
}

.pb-video-track{
  display:flex;
  gap:12px;
  transition:transform .25s ease;
  will-change:transform;
}

.pb-video-item{
  flex:0 0 calc((100% - 24px) / 3);
  min-width:0;
}

.pb-video-card{
  border:1px solid #e5e5e5;
  border-radius:10px;
  background:#fff;
  overflow:hidden;
  transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.pb-video-card:hover{
  transform:translateY(-2px);
  border-color:#dbdbdb;
  box-shadow:0 6px 18px rgba(0,0,0,.06);
}

.pb-video-thumb{
  position:relative;
  width:100%;
  aspect-ratio:16/9;
  background:#111;
  overflow:hidden;
  display:block;
  cursor:pointer;
}

.pb-video-thumb:focus-visible{
  outline:2px solid #3b82f6;
  outline-offset:2px;
}

.pb-video-thumb img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
  transition:transform .24s ease;
}

.pb-video-thumb:hover img{
  transform:scale(1.02);
}

.pb-video-thumb-fallback{
  position:absolute;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  color:#fff;
  font-size:14px;
  letter-spacing:.02em;
}

.pb-video-play{
  position:absolute;
  left:50%;
  top:50%;
  transform:translate(-50%,-50%);
  width:68px;
  height:48px;
  border-radius:14px;
  background:rgba(0,0,0,.45);
  backdrop-filter:blur(2px);
  display:flex;
  align-items:center;
  justify-content:center;
  transition:background .18s ease, transform .18s ease;
  pointer-events:none;
}

.pb-video-thumb:hover .pb-video-play{
  background:rgba(0,0,0,.62);
  transform:translate(-50%,-50%) scale(1.04);
}

.pb-video-play-triangle{
  width:0;
  height:0;
  margin-left:4px;
  border-top:10px solid transparent;
  border-bottom:10px solid transparent;
  border-left:16px solid #fff;
}

.pb-video-frame-wrap{
  position:relative;
  width:100%;
  aspect-ratio:16/9;
  background:#000;
}

.pb-video-frame-wrap iframe{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  border:none;
  display:block;
}

.pb-video-title{
  padding:8px 10px;
  font-size:11px;
  color:#666;
  line-height:1.35;
  border-top:1px solid #f2f2f2;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

.pb-video-prev{
  left:0;
}

.pb-video-next{
  right:0;
}

/* Responsive */

@media (max-width:900px){
  .pb-detail-grid{
    grid-template-columns:1fr;
  }

  .pb-sample-item{
    flex:0 0 calc((100% - 12px) / 2);
  }

  .pb-samples-shell{
    padding:0 36px;
  }

  .pb-video-item{
    flex:0 0 calc((100% - 12px) / 2);
  }
}

@media (max-width:640px){
  .pb-detail-wrap{
    padding:14px 12px 24px;
  }

  .pb-title{
    font-size:20px;
  }

  .pb-placeholder-card{
    padding:12px 14px;
  }

  .pb-placeholder-value{
    font-size:16px;
  }

  .pb-placeholder-note,
  .pb-placeholder-label{
    font-size:12px;
  }

  .pb-quick-facts{
    gap:8px;
    margin-top:14px;
  }

  .pb-fact-pill{
    min-height:34px;
    padding:7px 12px;
    font-size:13px;
    max-width:100%;
    white-space:normal;
  }

  .pb-kv li{
    flex-direction:column;
    gap:3px;
  }

  .pb-k{
    width:auto;
    flex:none;
  }

  .pb-sample-item{
    flex:0 0 100%;
  }

  .pb-samples-shell{
    padding:0 34px;
  }

  .pb-lightbox{
    padding:12px;
  }

  .pb-lightbox-nav{
    width:36px;
    height:36px;
    font-size:20px;
  }

  .pb-video-item{
    flex:0 0 100%;
  }

  .pb-video-play{
    width:60px;
    height:42px;
  }

  .pb-video-play-triangle{
    border-top:9px solid transparent;
    border-bottom:9px solid transparent;
    border-left:14px solid #fff;
  }
  
}

.pb-book-articles {
  margin-top: 24px;
}

.pb-article-list {
  display: grid;
  gap: 14px;
}

.pb-article-source {
  color: #555;
}

.pb-article-author,
.pb-article-date {
  color: #999;
}

.pb-article-card {
  border: 1px solid #e5e5e5;
  border-radius: 12px;
  padding: 12px 14px;
  background: #fff;
}

.pb-article-title {
  margin: 0 0 6px;
  font-size: 18px;
  line-height: 1.3;
}

.pb-article-title a {
  text-decoration: none;
}

.pb-article-title a:hover {
  text-decoration: underline;
}

.pb-article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  font-size: 13px;
  color: #777;
  margin-bottom: 6px;
}

.pb-article-meta span + span::before {
  content: "|";
  margin: 0 4px;
  color: #bbb;
}

.pb-article-badge {
  display: inline-block;
  font-size: 10px;
  line-height: 1;
  padding: 4px 8px;
  border-radius: 999px;
  background: #f3f3f3;
  color: #555;
  white-space: nowrap;
}

.pb-article-excerpt {
  font-size: 14px;
  line-height: 1.6;
  color: #333;
}

.pb-article-readmore-inline {
  display: inline;
  margin-left: 6px;
  font-weight: 600;
  color: #0073aa;
}

.pb-article-readmore-inline:hover {
  text-decoration: underline;
  color: #005177;
}

.pb-article-more {
  margin-top: 10px;
  font-size: 13px;
  color: #777;
}

@media (max-width: 768px) {
  .pb-article-card {
    padding: 12px 14px;
  }

  .pb-article-title {
    font-size: 16px;
  }

  .pb-article-meta,
  .pb-article-excerpt,
  .pb-article-readmore-inline {
    font-size: 13px;
  }
}

.pb-article-view-all {
  margin-left: 6px;
  font-weight: 600;
  color: #0073aa;
  text-decoration: none;
}

.pb-article-view-all:hover {
  text-decoration: underline;
  color: #005177;
}

.pb-articles-pagination {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.pb-page-num {
  display: inline-block;
  min-width: 34px;
  padding: 6px 10px;
  border: 1px solid #ddd;
  border-radius: 8px;
  text-align: center;
  text-decoration: none;
  color: #111;
  background: #fff;
}

.pb-page-num:hover {
  border-color: #cfcfcf;
  background: #fafafa;
}

.pb-page-num.is-current {
  font-weight: 600;
  background: #f3f3f3;
  border-color: #d8d8d8;
}

.pb-article-page-head .pb-muted {
  font-size: 18px;     /* 从12 → 16 */
  color: #333;
  margin-top: 4px;
}

.pb-article-page-head .pb-total-page {
  font-size: 13px;     /* 从12 → 16 */
  color: #777;
  margin-bottom: 4px;
}

.pb-book-articles-page .pb-title {
  font-size: 12px;     /* 从22 → 18 */
  font-weight: 400;
}

.pb-article-book a {
  color: inherit;
  text-decoration: none;
}

.pb-article-book a:hover {
  text-decoration: underline;
}

.pb-header-right{
  display:flex;
  align-items:center;
  gap:18px;
}

.pb-top-nav{
  display:flex;
  align-items:center;
  gap:18px;
}

.pb-top-nav-link{
  text-decoration:none;
  color:inherit;
}

.pb-top-nav-link:hover{
  text-decoration:underline;
}

.pb-lang-switch{
  display:flex;
  align-items:center;
  gap:6px;
}

.pb-article-filters{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin:12px 0 8px;
}

.pb-article-filter{
  display:inline-block;
  padding:6px 12px;
  border:1px solid #ddd;
  border-radius:999px;
  background:#fff;
  color:#333;
  text-decoration:none;
  font-size:13px;
  line-height:1.2;
}

.pb-article-filter:hover{
  background:#fafafa;
  border-color:#cfcfcf;
}

.pb-article-filter.is-active{
  background:#f3f3f3;
  border-color:#d8d8d8;
  font-weight:600;
}

.pb-article-count{
  margin: 13px 0 0px;
  font-size: 13px;
  line-height: 1.4;
  color: #b8b8b8;
}