*{box-sizing:border-box}body{background:#f7f7f7;margin:0;font-family:Arial,sans-serif}button{font:inherit}.gallery-page{box-sizing:border-box;flex-direction:column;gap:12px;height:100vh;padding:16px;display:flex;overflow:hidden}.topic-search{width:100%}.topic-search-field{position:relative}.topic-search input{color:#fff;background:#374151;border:1px solid #4b5563;border-radius:6px;width:100%;padding:8px 36px 8px 10px}.topic-search input::placeholder{color:#d1d5db}.topic-search-icon{color:#fff;cursor:pointer;background:0 0;border:none;padding:2px 4px;font-size:16px;line-height:1;position:absolute;top:50%;right:6px;transform:translateY(-50%)}.status-text{margin:0;font-size:14px}.gallery-content{flex:1;grid-template-columns:220px 1fr;gap:16px;min-height:0;display:grid;overflow:hidden}.left-panel{background:#fff;border:1px solid #ddd;border-radius:8px;flex-direction:column;gap:8px;height:100%;max-height:calc(100vh - 32px);padding:10px;display:flex;overflow-y:auto}.left-sticky-top{z-index:1;background:#fff;padding-bottom:8px;position:sticky;top:0}.left-item{text-align:left;cursor:pointer;background:#fff;border:1px solid #ddd;border-radius:6px;padding:8px;display:block}.list-load-more{cursor:pointer;background:#f3f4f6;border:1px solid #d1d5db;border-radius:6px;padding:8px}.list-load-more.horizontal{flex:none;min-width:110px}.list-load-more:disabled{opacity:.7;cursor:default}.left-item.is-active,.thumbnail-item.is-active{border-color:#2f6fed}.panel-text{color:#222;font-size:14px}.right-panel{grid-template-rows:1fr auto;gap:12px;min-width:0;height:100%;min-height:0;display:grid;overflow:hidden}.main-preview{background:#fff;border:1px solid #ddd;border-radius:8px;flex-direction:column;gap:8px;min-width:0;min-height:0;padding:10px;display:flex;overflow:hidden}.photographer{margin:0 0 8px;font-size:14px}.photographer a{color:#2f6fed}.large-image{object-fit:contain;object-position:center;background:#f3f4f6;border-radius:6px;flex:1;width:100%;max-width:100%;height:100%;min-height:0;display:block}.thumbnail-strip{background:#fff;border:1px solid #ddd;border-radius:8px;gap:10px;padding:10px;display:flex;overflow-x:auto}.thumbnail-strip-shell{width:100%;min-width:0;position:relative}.thumb-move-btn{color:#374151;cursor:pointer;z-index:1;background:#fff;border:1px solid #d1d5db;border-radius:999px;width:28px;height:28px;position:absolute;top:50%;transform:translateY(-50%)}.thumb-move-btn.left{left:6px}.thumb-move-btn.right{right:6px}.thumbnail-strip-shell .thumbnail-strip{box-sizing:border-box;width:100%;min-width:0;padding-inline:42px}.thumbnail-item{cursor:pointer;text-align:left;background:#fff;border:1px solid #ddd;border-radius:6px;flex-direction:column;flex:none;gap:6px;width:110px;padding:8px;display:flex}.thumb-image{object-fit:cover;border-radius:4px;width:100%;height:60px;display:block}.thumb-text{color:#555;font-size:12px}@media (width<=900px){.gallery-content{grid-template-columns:1fr}.left-panel{max-height:220px}.main-preview{min-height:240px}}