/* PINS · 品石：沿用文档式黑白灰界面。 */
:root{color-scheme:light;--ink:#000;--muted:#626970;--rule:#a5abb1;--frame:#464e56;--fill:#f0f2f4;--sidebar:#f5f6f7;--selected:#e5e9ed;--hover:#eaeef1;--accent:#000;--content-width:880px;--sidebar-width:248px;--font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;font-family:var(--font);color:var(--ink);background:#fff;font-synthesis:none}
*{box-sizing:border-box}/* 禁止到达页面或侧栏边界后的纵向回弹，正常滚动与表格横向滚动保留。 */
html{scrollbar-gutter:stable;overscroll-behavior-y:none}body{overscroll-behavior-y:none;margin:0;font-size:15px;line-height:1.65}a{color:inherit;text-underline-offset:4px}a:hover{text-decoration-thickness:1px}button,input{font:inherit}button{cursor:pointer}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible,.table-scroll:focus-visible{outline:2px solid var(--frame);outline-offset:3px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip{position:fixed;left:20px;top:-80px;padding:10px;background:#fff;z-index:30}.skip:focus{top:8px}
/* 两级紧凑目录：summary 整行原生折叠，不嵌套链接；不设置侧栏边线、组间线或选中行竖线。 */
.site-layout{display:grid;grid-template-columns:var(--sidebar-width) minmax(0,1fr);min-height:100dvh;align-items:start}.sidebar{position:sticky;top:0;height:100dvh;overflow-y:auto;background:var(--sidebar);overscroll-behavior-y:none}.library-tree{padding:22px 12px 32px;font-size:13px;line-height:1.4}.library-folder{margin:0}.library-folder>summary{position:relative;min-height:28px;padding:4px 0 4px 6px;list-style:disclosure-closed inside;cursor:pointer}.library-folder[open]>summary{list-style-type:disclosure-open}.library-folder>summary::marker{font-size:10px}.folder-label{display:inline-flex;align-items:center;gap:8px;width:calc(100% - 18px);vertical-align:middle;text-decoration:none;line-height:20px}.folder-label span{overflow-wrap:anywhere}.folder-label img,.item-link img{flex:none}.library-folder>summary[aria-current],.item-link[aria-current]{font-weight:600}.folder-items{list-style:none;padding:0;margin:0}.folder-empty{padding:5px 6px 7px 27px;color:var(--muted);font-size:12px}.item-link{display:flex;align-items:center;gap:7px;min-height:28px;padding:4px 6px 4px 27px;text-decoration:none}.item-link .item-name{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
/* 所有页面共用同一版心、工具栏和品牌起始位置，切换页面不产生水平跳动。 */
main{min-width:0;width:calc(100% - 96px);max-width:var(--content-width);margin:0 auto}.page-toolbar{position:relative;z-index:5;display:flex;align-items:center;justify-content:space-between;gap:16px;height:44px;padding-top:22px;background:#fff;font-size:12px;line-height:22px;color:var(--muted)}.page-links,.language-switch{display:flex;align-items:center;gap:14px;white-space:nowrap}.language-switch{gap:10px;flex:none}.page-toolbar a{text-decoration:none}.language-switch a[aria-current="page"]{color:var(--ink);font-weight:650;text-decoration:underline;text-underline-offset:5px}.navigation-toggle{border:0;border-radius:0;padding:8px;background:transparent;color:#000;line-height:0}.search-intro{padding:52px 0 64px;text-align:center}h1{margin:0;font-size:72px;font-weight:700;line-height:1.2;letter-spacing:.16em}.search-brand{display:inline-block;padding-left:.16em;text-decoration:none}.search-brand:hover{text-decoration:none}.search-form{width:100%;margin:30px 0 0}.search-bar{display:grid;grid-template-columns:minmax(0,1fr) 104px;align-items:stretch;border:1px solid var(--frame);background:#fff}.search-bar:has(input:focus-visible){outline:2px solid var(--frame);outline-offset:3px}.search-bar input{min-width:0;width:100%;height:48px;padding:0 16px;border:0;border-radius:0;background:transparent;color:var(--ink);font-size:15px;outline:none}.search-bar input:focus-visible{outline:none}.search-bar input::placeholder{color:#697078}.search-bar button{padding:0 20px;border:0;border-left:1px solid #000;border-radius:0;background:#fff;color:#000;font-size:14px;font-weight:600}
.results{margin:0 0 64px}.results-heading{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;padding:0 0 16px}.results-heading h2{margin:0;font-size:19px;font-weight:650}.result-count{display:inline-block;margin-left:10px;font-size:12px;font-weight:400;color:var(--muted)}.mobile-table-hint{display:none}.results-tools{display:flex;flex-wrap:wrap;gap:16px;align-items:center;font-size:12px;color:var(--muted)}.table-scroll{overflow-x:auto;max-width:100%;overscroll-behavior-x:contain}.asset-table{width:100%;min-width:760px;border-collapse:collapse;table-layout:fixed;border:2px solid var(--frame);font-size:13px;background:#fff}.manufacturer-col{width:13%}.part-col{width:27%}.image-col{width:15%}.delivery-col{width:15%}.asset-table th,.asset-table td{border:1px solid var(--rule);padding:12px 10px;text-align:left;vertical-align:middle;overflow-wrap:anywhere}.asset-table thead th{padding:12px 10px;border-bottom:1.5px solid var(--frame);background:var(--fill);font-size:13px;font-weight:650;line-height:1.5}.asset-table tbody tr:hover{background:#fafbfc}.asset-table .part-info{font-weight:400}.manufacturer{font-size:13px;line-height:1.8}.mpn{display:block;font-size:14px;font-weight:650;line-height:1.6}.part-meta{display:block;font-size:12px;color:var(--muted);margin-top:5px;line-height:1.6}.part-function{margin:9px 0 0;font-size:12px;line-height:1.75;color:var(--muted)}.asset-table .image-cell{padding:0}.preview-link{display:flex;align-items:center;justify-content:center;aspect-ratio:4/3;background:#fff;cursor:zoom-in;text-decoration:none}.preview-link img{display:block;width:100%;height:100%;object-fit:contain}.preview-link:hover{outline:1px solid var(--frame);outline-offset:-1px}.missing-image{display:block;text-align:center;color:var(--muted);font-size:12px;padding:35px 0}.delivery{text-align:center!important}.download{display:block;padding:9px 5px;border:1px solid var(--frame);font-size:12px;font-weight:600;text-decoration:none;white-space:normal}.file-meta{display:block;font-size:11px;color:var(--muted);margin:9px 0;line-height:1.6}/* 空结果仍保留原有六列表格，只占一个紧凑提示行。 */
.asset-table .empty-row td{padding:16px 10px;color:var(--muted);font-size:13px}.asset-table .empty-row:hover{background:#fff}
/* 搜索词只存当前浏览器；历史项可换行，不撑宽结果区。 */
.results-tools{min-width:0;max-width:100%;justify-content:flex-end}.search-history{margin-top:10px;text-align:left;font-size:12px;color:var(--muted);display:flex;align-items:center;flex-wrap:wrap;gap:6px 8px;min-width:0;max-width:100%}.search-history[hidden]{display:none}.history-label{white-space:nowrap}.history-items{display:flex;flex-wrap:wrap;gap:5px;min-width:0;max-width:100%}.history-item,.history-clear{border:0;border-radius:0;background:transparent;color:inherit;font:inherit;padding:3px 0}.history-item{max-width:14ch;padding:2px 6px;border:1px solid var(--rule);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.history-clear{text-decoration:underline;text-underline-offset:3px}
/* 恢复原生dialog点击预览，完整显示原图，不再提供悬停浮窗。 */
#preview-dialog{padding:0;border:1px solid var(--frame);width:min(1100px,calc(100vw - 48px));max-width:none;max-height:calc(100dvh - 48px);background:white;color:var(--ink)}#preview-dialog::backdrop{background:rgb(0 0 0 / 48%)}.preview-header,.preview-footer{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 20px}.preview-header{border-bottom:1px solid var(--rule);background:var(--fill)}.preview-header h2{margin:0;font-size:15px;font-weight:600;overflow-wrap:anywhere}.preview-header button{border:1px solid var(--rule);border-radius:0;background:#fff;color:var(--ink);padding:5px 12px;white-space:nowrap;font-size:12px}.preview-stage{display:flex;align-items:center;justify-content:center;padding:18px;min-height:0}.preview-stage img{display:block;max-width:100%;max-height:calc(100dvh - 220px);width:auto;height:auto;object-fit:contain}.preview-footer{border-top:1px solid var(--rule);font-size:12px;color:var(--muted)}
@media(max-width:600px){#preview-dialog{width:calc(100vw - 24px);max-height:calc(100dvh - 24px)}.preview-header,.preview-footer{padding:12px;gap:10px}.preview-header h2{font-size:13px}.preview-footer{font-size:11px}.preview-stage{padding:10px}}
@media(min-width:1800px){:root{--sidebar-width:272px}}
@media(max-width:1350px){main{width:calc(100% - 56px)}}
/* 手机端目录在文档流中展开，无遮罩和分割线；无 JS 时目录完整可用。 */
@media(max-width:900px){.site-layout{display:flex;flex-direction:column}.sidebar{position:static;height:auto;width:100%;max-height:55dvh;overflow-y:auto}.library-tree{padding:12px 16px 20px;font-size:14px}.library-folder>summary{min-height:40px;padding-top:10px;padding-bottom:10px}.item-link{min-height:40px;padding-top:10px;padding-bottom:10px}main{width:calc(100% - 48px)}.page-toolbar{height:60px;padding-top:16px}.page-links{gap:12px}.search-intro{padding:36px 0 48px}h1{font-size:64px}.results-tools>span{display:none}.results-tools .mobile-table-hint{display:inline}}
@media(max-width:600px){main{width:calc(100% - 32px)}.page-toolbar{gap:10px}.page-links{gap:10px}.language-switch{gap:8px}.search-intro{padding:32px 0 40px}h1{font-size:52px}.search-form{margin-top:24px}.search-bar{grid-template-columns:minmax(0,1fr) 76px}.search-bar input{padding:0 12px;font-size:14px}.search-bar button{padding:0 10px}.results-heading h2{font-size:17px}.results-tools{gap:12px;font-size:11px}.result-count{margin-left:6px}.results-tools{justify-content:flex-start;width:100%}.search-history{flex-basis:100%}.history-item,.history-clear{min-height:36px}}
@media print{.site-layout{display:block}.sidebar,.page-toolbar,.search-form,.results-tools,#preview-dialog{display:none!important}main{width:100%;max-width:none}.search-intro{padding:12px 0 24px}.table-scroll{overflow:visible}.asset-table{min-width:0;font-size:10px}.asset-table th,.asset-table td{padding:7px}.asset-table thead th{background:var(--fill);print-color-adjust:exact}.mpn{font-size:11px}.asset-table tr{break-inside:avoid}.download{border:0;padding:0}}

/* 反馈地址共用顶部栏；窄屏独立换行，语言切换始终位于右上角。 */
.feedback-link{color:var(--muted)}
@media(max-width:600px){.page-toolbar{height:88px;align-items:flex-start}.page-links{flex-wrap:wrap;min-width:0;row-gap:4px}.feedback-link{flex-basis:100%;font-size:11px}.language-switch{padding-top:8px}.navigation-toggle{padding:4px}}

/* 当前目录最多50条，一级目录全部保留；使用侧栏原生滚动。 */
.folder-label span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.folder-empty{height:28px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
@media(max-width:900px){.folder-empty{height:40px;padding-top:10px}}
/* 列表分页保持一行紧凑操作，窄屏允许摘要换行。 */
.pagination{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:8px;margin:10px 0;font-size:12px}@media print{.pagination{display:none}}

/* 翻页统一放在正文区，页码输入后原位显示跳转。 */
.pagination-controls{display:flex;align-items:center;gap:4px;margin:0;white-space:nowrap}.pagination-controls a,.pagination-controls span,.pagination-controls button,.page-input{display:inline-flex;align-items:center;justify-content:center;min-height:28px;padding:3px 8px;border:1px solid var(--rule);border-radius:0;background:#fff;color:var(--ink);text-decoration:none;font-size:12px;line-height:20px}.pagination-controls [hidden]{display:none}.pagination-controls .page-disabled{color:var(--muted);border-color:transparent}.page-input{width:52px;text-align:center;font-variant-numeric:tabular-nums;appearance:textfield}.page-input::-webkit-inner-spin-button,.page-input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}.page-forward,.page-go{min-width:6.5em}
/* 官网使用独立的小型文字按钮。 */
.manufacturer-website{position:absolute;right:6px;top:50%;transform:translateY(-50%);display:inline-flex;align-items:center;justify-content:center;width:calc(4ch + 10px);height:18px;padding:0 4px;border:1px solid #b8bec5;background:#fff;color:#4b535c;font:500 10px/16px ui-monospace,SFMono-Regular,Consolas,monospace;letter-spacing:0;white-space:nowrap;text-decoration:none}.manufacturer-website:hover{border-color:#7e8791}.library-folder:not([open]) .manufacturer-website{display:none}.library-folder[open]>summary.folder-has-website .folder-label{width:calc(100% - 62px)}
@media(max-width:900px){.pagination-controls a,.pagination-controls span,.pagination-controls button,.page-input{min-height:32px}.manufacturer-website{height:20px;font-size:11px;line-height:18px}}@media print{.manufacturer-website{display:none}}

/* 名称与精确料号同排一行；完整身份由链接提示提供。 */
.item-label{display:block;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.item-label .item-name{display:inline}.item-code{margin-left:6px;font:400 10px/1.4 ui-monospace,SFMono-Regular,Consolas,monospace;color:var(--muted)}.part-code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace}

/* 单行目录固定节奏，窄屏保留32px点击高度。 */
.library-tree .item-link{height:28px;min-height:28px;padding-block:4px}.library-tree .item-label{line-height:20px}@media(max-width:900px){.library-tree .item-link{height:32px;min-height:32px;padding-block:5px}}

/* 目录沿用下载按钮的黑白反馈；选中料号为白底黑字，悬停时才反色。 */
.item-link[aria-current]{background:#fff;color:#000}
.item-link[aria-current] .item-code{color:inherit}
@media(hover:hover){
.library-folder>summary:hover:not(:has(.manufacturer-website:hover)),.item-link:hover{background:#000;color:#fff;cursor:pointer}
.library-folder>summary:hover:not(:has(.manufacturer-website:hover)) .folder-label img{filter:invert(1)}
.item-link:hover .item-code{color:inherit}
.manufacturer-website:hover{background:#000;border-color:#000;color:#fff}
}
/* 键盘焦点只用黑色轮廓，不模拟悬停；官网保留独立点击反馈。 */
.item-link:focus-visible,.library-folder>summary:focus-visible{outline:2px solid #000;outline-offset:-2px}

/* 全站操作控件：默认白底黑字，仅鼠标悬停反色；禁用项不产生可点击反馈。 */
@media(hover:hover){
.search-bar button:enabled:hover,.endpoint-row button:enabled:hover,.preview-header button:enabled:hover,.navigation-toggle:enabled:hover,.history-item:enabled:hover,.history-clear:enabled:hover,.pagination-controls button:enabled:hover,.pagination-controls a:hover,.download:hover,.action-link:hover,.page-toolbar a:hover,.protocol summary:hover{background:#000;color:#fff;border-color:#000;text-decoration:none}
.navigation-toggle:hover img{filter:invert(1)}
}

/* 首页提示紧接搜索框，采用紧凑编号列表；中文品牌保持较小字号。 */
.search-brand{display:inline-flex;align-items:center;justify-content:center;gap:.2em;padding-left:0;letter-spacing:.04em;white-space:nowrap}
.brand-cn{font-size:.72em}
.brand-dot{font-size:.65em;font-weight:500;letter-spacing:0}
.home-intro{margin:22px 0 0;padding:16px 20px;background:var(--sidebar);text-align:left;font-size:14px;line-height:1.8}
.home-intro h2{margin:0 0 6px;font-size:15px;font-weight:600;line-height:1.6}
.home-intro ol{margin:0;padding-left:1.6em}
.home-intro li+li{margin-top:4px}
.search-intro:has(.home-intro){padding-bottom:32px}
@media(max-width:600px){.search-brand{font-size:36px}.home-intro{margin-top:16px;padding:12px 14px;font-size:13px}.home-intro h2{font-size:14px}.search-intro:has(.home-intro){padding-bottom:24px}}

/* 页面初始状态直接呈现；目录交互动画由实际行数驱动，无JS保留原生折叠。 */
.library-folder[open]>.folder-content{animation:none}

/* 增强导航保留侧栏节点；动画只由实际插入后的高度变化驱动。 */
.sidebar[data-enhanced]{overflow-anchor:none}
.sidebar[data-enhanced] .folder-content{animation:none}
.navigation-status{position:fixed;bottom:16px;right:16px;z-index:30;padding:10px 14px;background:#fff;border:1px solid var(--rule);font-size:13px}
.navigation-status[hidden]{display:none}
.navigation-status a{margin-left:10px}

/* 永久预留目录滚动条槽，长短列表切换不改变内容宽度。 */
.sidebar{scrollbar-gutter:stable}
@supports not (scrollbar-gutter:stable){.sidebar{overflow-y:scroll}}
/* 固定箭头、文件夹与文字起点；料号去图标，并与厂商文字左对齐。 */
.library-folder>summary{display:grid;grid-template-columns:12px minmax(0,1fr);align-items:center;list-style:none}
.library-folder>summary::-webkit-details-marker{display:none}
.library-folder>summary::before{content:"";width:0;height:0;border-top:3px solid transparent;border-bottom:3px solid transparent;border-left:5px solid currentColor;transform-origin:2px center}
.library-folder[open]>summary::before{transform:rotate(90deg)}
.library-folder>summary .folder-label{display:flex;width:100%;min-width:0}
.library-folder[open]>summary.folder-has-website .folder-label{width:100%;padding-right:54px}
.folder-panel{border:1px solid #000}
.library-tree .item-link{padding-left:41px;padding-right:6px}
.folder-empty{padding-left:41px}

/* 活动厂商持续反色，和料号列表的细框连接。 */
.library-folder>summary[aria-current]{background:#000;color:#fff}
.library-folder>summary[aria-current] .folder-label img{filter:invert(1)}
/* 仅放宽英文品牌字距，抵消末尾多余字距以保持整体居中。 */
.search-brand>span:first-child{letter-spacing:.1em;margin-right:-.1em}

/* 总页数紧邻上一页，作为文字说明，不画成按钮。 */
.pagination-controls .pagination-total{border:0;padding:0;margin-right:8px;background:transparent;color:var(--muted)}

/* 搜索记录紧邻搜索框；标题、数量与顶部翻页共享一行，窄屏自然换行。 */
.results-heading>.pagination{margin:0 0 0 auto}.results-tools:empty{display:none}.results-tools:not(:has(a)){display:none}
@media print{.search-history{display:none!important}}

/* 展开期间直接关闭原生纵向滚动条；stable仍保留槽宽，完成或取消后恢复auto。 */
.sidebar:has(.folder-content[data-expanding]){overflow-y:hidden}

/* 全站备案页脚：与正文共用版心，短页面贴近底部，长页面随文档滚动。 */
.site-layout{grid-template-rows:1fr auto}
.site-layout>.sidebar{grid-column:1;grid-row:1 / 3}
.site-footer{grid-column:2;grid-row:2;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px 24px;width:calc(100% - 96px);max-width:var(--content-width);margin:0 auto;padding:16px 0 20px;border-top:1px solid #d8dde1;color:var(--muted);font-size:13px;line-height:1.7}
.site-footer-brand{font-weight:500;letter-spacing:.02em;white-space:nowrap}
.site-footer-icp{display:inline-flex;align-items:center;min-height:32px;max-width:100%;font-variant-numeric:tabular-nums;text-decoration:none;white-space:nowrap}
.site-footer-icp:hover,.site-footer-icp:focus-visible{color:var(--ink);text-decoration:underline;text-underline-offset:4px}
@media(max-width:1350px){.site-footer{width:calc(100% - 56px)}}
@media(max-width:900px){.site-footer{width:calc(100% - 48px);margin-top:auto}}
@media(max-width:600px){.site-footer{width:calc(100% - 32px);flex-direction:column;align-items:flex-start;gap:2px;padding:16px 0 20px}}
@media print{.site-footer{width:100%;max-width:none;break-inside:avoid}}