/* Public home/search/document refinement; deliberately absent on admin and collections. */
.library-usability{--ink:#102b48;--muted:#52677e;background:#fff;color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",system-ui,sans-serif}
.library-usability .shell,.library-usability .topbar-inner{max-width:1360px;margin-inline:auto;padding-inline:24px;box-sizing:border-box}
.library-usability .main,.library-usability .doc-main,.library-usability .doc-header-main{min-width:0}
.library-usability .topbar-inner{gap:20px;flex-wrap:wrap;min-height:76px}
.library-usability .brand-text{color:#102b48;font-size:22px}.library-usability .white-brand-icon{flex-shrink:0}
.library-usability .topnav{flex-wrap:wrap;gap:12px}.library-usability .topnav a,.library-usability .topnav button{min-height:44px;display:inline-flex;align-items:center}
.library-usability .search-form{min-width:0;flex:1 1 320px}.library-usability .search-form input{min-width:0}.library-usability .search-form button,.library-usability .search-form select{min-height:44px}
.library-usability .category-bar{flex-wrap:wrap}.library-usability .category-bar a{min-height:44px;display:inline-flex;align-items:center}
.library-usability a:focus-visible,.library-usability button:focus-visible,.library-usability summary:focus-visible{outline:3px solid #2865a5;outline-offset:3px}
.library-usability .white-hero{min-height:340px;margin-inline:-24px;padding:32px 40px;margin-bottom:24px}.library-usability .white-eyebrow{margin-bottom:12px}.library-usability .white-hero-sub{margin-bottom:18px}
.library-usability .white-hot a{min-height:44px;display:inline-flex;align-items:center;padding:6px 12px;box-sizing:border-box}.library-usability .white-hot{margin-top:10px}
.library-usability .white-library-scope summary,.library-usability .white-library-scope>a{min-height:44px;display:inline-flex;align-items:center}
.library-usability .usability-categories{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:24px}
.library-usability [data-category]{--category-color:#405b73;--category-bg:#f1f5f8}
.library-usability [data-category="gb"]{--category-color:#165ba1;--category-bg:#eef5fd}.library-usability [data-category="hb"]{--category-color:#086b76;--category-bg:#edf9fa}.library-usability [data-category="regulation"]{--category-color:#8f570b;--category-bg:#fff7e9}.library-usability [data-category="policy"]{--category-color:#7547a0;--category-bg:#f7f1fc}
.library-usability .usability-categories>a{display:flex;align-items:center;gap:12px;min-height:80px;padding:14px 16px;background:var(--category-bg);border:1px solid #dfe7ef;border-radius:10px;color:var(--category-color);text-decoration:none}
.library-usability .usability-categories>a>span:last-child{margin-left:auto}.library-usability .usability-categories strong{display:block;font-size:16px}.library-usability .usability-categories small{display:block;margin-top:5px;font-size:12px;color:#52677e}.library-usability .usability-category-mark{width:4px;height:32px;border-radius:3px;background:var(--category-color);flex-shrink:0}
.library-usability .white-card{padding:20px}.library-usability .white-bento{gap:24px}.library-usability .white-updates{margin-bottom:24px}
.library-usability .white-update-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.library-usability .white-update-row{min-width:0;margin:0;padding:16px;display:flex;flex-direction:column}
.library-usability .white-update-row[hidden]{display:none}.library-usability .white-update-line{display:flex;align-items:flex-start;gap:12px}.library-usability .white-update-copy{min-width:0;flex:1}
.library-usability .white-update-title{font-size:17px;line-height:1.6;display:block;overflow:visible;white-space:normal;max-height:none;overflow-wrap:anywhere;-webkit-line-clamp:unset}
.library-usability .white-update-preview{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:3;overflow:hidden;line-height:1.65;color:#455f78}
.library-usability .white-update-meta{display:flex;flex-wrap:wrap;gap:4px 12px;font-size:12px}.library-usability .white-update-read{min-height:44px;min-width:54px;display:inline-flex;align-items:center;justify-content:center;box-sizing:border-box;flex-shrink:0}
.library-usability .white-update-analysis{margin-top:auto;padding-top:8px}.library-usability .white-update-analysis summary,.library-usability .white-updates-more{min-height:44px;display:flex;align-items:center}.library-usability .white-update-tabs button{min-height:44px}
.library-usability .white-equipment-tile{border-left:3px solid #4273a7;background:#f5f9fe}.library-usability .white-equipment-support,.library-usability .white-equipment-pump{border-left-color:#17848c;background:#f0faf9}.library-usability .white-equipment-conveyor,.library-usability .white-equipment-loader{border-left-color:#ac7d35;background:#fffbf3}.library-usability .white-equipment-matching{border-left-color:#8660a2;background:#faf5ff}
.library-usability .page-head{margin-bottom:20px}.library-usability .page-head h1{font-size:28px;line-height:1.45;overflow-wrap:anywhere}
.library-usability .usability-export{margin-bottom:24px;border:1px solid #dce5ef;border-radius:8px;background:#f8fafc}.library-usability .usability-export>summary{padding:10px 16px;min-height:44px;box-sizing:border-box;cursor:pointer;color:#405b73;font-size:14px}.library-usability .usability-export>summary span{margin-left:8px;color:#52677e}.library-usability .export-bar{margin:0;border:0;padding:12px 16px;flex-wrap:wrap}.library-usability .export-bar button,.library-usability .export-bar select{min-height:44px}
.library-usability .doc-item{border:1px solid #dfe7ef;border-left:4px solid var(--category-color);border-radius:9px;padding:18px;margin-bottom:14px;background:#fff;gap:16px}.library-usability .doc-line1{display:flex;flex-wrap:wrap;align-items:center;gap:8px 10px}.library-usability .doc-title{flex-basis:100%;font-size:18px;line-height:1.6;white-space:normal;overflow:visible;text-overflow:clip;overflow-wrap:anywhere;order:1}.library-usability .doc-line2{margin-top:10px;gap:8px}.library-usability .usability-category-label{color:var(--category-color);background:var(--category-bg);border-color:transparent;font-weight:600}.library-usability .stdno{font-weight:700;color:#102b48}.library-usability .doc-summary{line-height:1.7;color:#455f78}.library-usability .doc-actions{display:flex;flex-wrap:wrap;gap:6px;align-items:center}.library-usability .doc-actions a{min-height:44px;min-width:54px;display:inline-flex;align-items:center;justify-content:center}
.library-usability .doc-header{padding:20px;gap:20px;border-top:3px solid var(--category-color);margin-bottom:24px}.library-usability .doc-header h1{font-size:26px;line-height:1.55;margin-bottom:12px;overflow-wrap:anywhere}.library-usability .doc-header h1 .stdno{display:block;font-size:16px;margin-bottom:6px}.library-usability .doc-meta-row{gap:8px}.library-usability .doc-header-actions{gap:12px}.library-usability .doc-tools{display:flex;flex-wrap:wrap;gap:8px}.library-usability .doc-tools a,.library-usability .collect-box button,.library-usability .collect-box select{min-height:44px;display:inline-flex;align-items:center;justify-content:center}
.library-usability .usability-categories>a,.library-usability .white-equipment-tile,.library-usability .white-update-read,.library-usability .doc-actions a{transition:background-color 180ms ease,box-shadow 180ms ease}.library-usability .usability-categories>a:hover,.library-usability .white-equipment-tile:hover{box-shadow:0 3px 12px #17385712}
@media(max-width:1100px){.library-usability .topnav{margin-left:0}.library-usability .topbar-inner{gap:10px 16px}.library-usability .white-bento{grid-template-columns:1fr}.library-usability .white-hero-copy{width:58%}.library-usability .white-hero-visual{left:58%}}
@media(max-width:800px){.library-usability .usability-categories{grid-template-columns:repeat(2,minmax(0,1fr))}.library-usability .white-update-list{grid-template-columns:1fr}.library-usability .shell,.library-usability .topbar-inner{padding-inline:16px}.library-usability .white-hero{margin-inline:-16px;padding:28px 24px;min-height:0}.library-usability .white-hero-copy{width:100%}.library-usability .white-hero-visual{position:relative;inset:auto;width:100%;height:180px}.library-usability .white-hero{flex-direction:column}.library-usability .white-hero h1{font-size:34px}.library-usability .doc-header{flex-direction:column}.library-usability .doc-item{flex-direction:column}.library-usability .doc-header-actions{width:100%}}
@media(max-width:480px){.library-usability .topbar-inner{padding-block:12px}.library-usability .brand-text{font-size:20px}.library-usability .topnav{width:100%;gap:2px 12px;white-space:normal}.library-usability .search-form{flex-basis:100%;flex-wrap:wrap}.library-usability .search-form input{width:100%;flex-basis:100%}.library-usability .white-card{padding:16px}.library-usability .white-card-head{flex-wrap:wrap}.library-usability .usability-categories>a{padding:12px;gap:8px}.library-usability .usability-categories small{font-size:11px}.library-usability .white-search{gap:8px;padding-left:10px}.library-usability .white-search button{padding-inline:14px;font-size:14px}.library-usability .white-search input{font-size:14px}.library-usability .white-search>img{width:20px}.library-usability .white-hero h1{font-size:30px}.library-usability .white-update-row{padding:12px}.library-usability .white-update-line{gap:8px}.library-usability .doc-header h1{font-size:23px}}
@media(prefers-reduced-motion:reduce){body.library-usability:not(.archive-motion-enabled) .usability-categories>a,body.library-usability:not(.archive-motion-enabled) .white-equipment-tile,body.library-usability:not(.archive-motion-enabled) .white-update-read,body.library-usability:not(.archive-motion-enabled) .doc-actions a{transition:none}}
.library-usability.archive-motion-reduced .usability-categories>a,.library-usability.archive-motion-reduced .white-equipment-tile,.library-usability.archive-motion-reduced .white-update-read,.library-usability.archive-motion-reduced .doc-actions a{transition:none}

/* QA correction: finite natural-height cards and compact native disclosure action. */
.library-usability .white-update-list{align-items:start}
.library-usability .white-update-row{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:start;gap:6px 12px}
.library-usability .white-update-line{display:contents;flex:none}
.library-usability .white-update-copy{grid-column:1/-1;flex:none}
.library-usability .white-update-title{margin:8px 0;max-width:none}
.library-usability .white-update-preview{margin:8px 0 4px;line-height:1.65}
.library-usability .white-update-preview[hidden]{display:none}
.library-usability .white-update-read{grid-row:2;grid-column:2;justify-self:end;min-height:44px}
.library-usability .white-update-analysis{grid-row:2;grid-column:1;margin:0;padding:0;min-width:0}
.library-usability .white-update-analysis>summary{min-height:44px;padding:8px 0;max-width:max-content}
.library-usability .white-update-analysis[open]{grid-column:1/-1}
.library-usability .white-update-analysis[open]+.white-update-read{grid-row:3}
.library-usability .white-update-analysis[open] .white-update-analysis-content{margin-top:4px}

/* Search-only: native controls, one reading column, existing category semantics. */
.library-search{background:#f6f8fb;color:#17243a}.library-search *{box-sizing:border-box}.library-search .shell{display:block;max-width:1360px;margin:auto;padding:28px 32px}.library-search .main{width:100%;min-width:0}.search-workspace{width:100%;min-width:0}.search-heading h1{font-size:30px;letter-spacing:-.025em;margin:0 0 8px}.search-heading p{color:#526176;margin:0 0 24px}.search-query-form{padding:22px;background:#fff;border:1px solid #dde5ef;border-radius:12px}.query-row{display:flex;align-items:end;gap:12px}.query-row label{flex:1}.search-query-form label,.export-form label{display:flex;flex-direction:column;gap:7px;font-size:14px;font-weight:600}.library-search input,.library-search select{width:100%;min-width:0;min-height:44px;border:1px solid #aab7c8;border-radius:7px;padding:10px 12px;background:#fff;color:#17243a;font:inherit}.library-search button{min-height:44px;padding:10px 20px;border:1px solid #1b55a7;border-radius:7px;background:#1b55a7;color:white;font:inherit;font-weight:600}.library-search a:focus-visible,.library-search button:focus-visible,.library-search input:focus-visible,.library-search select:focus-visible,.library-search summary:focus-visible{outline:3px solid #2268c8;outline-offset:3px}.search-filters{margin-top:14px;border-top:1px solid #e1e7ef}.library-search summary{min-height:44px;padding:13px 0;cursor:pointer;font-weight:600}.library-search summary span{font-weight:400;color:#536278;margin-left:10px}.filter-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;padding:12px 0}.filter-actions{display:flex;align-items:center;gap:16px;padding-top:8px}.filter-actions a,.active-filters a,.search-empty a{display:inline-flex;align-items:center;min-height:44px}.active-filters{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.active-filters a{border:1px solid #d4deed;border-radius:7px;background:#fff;padding:6px 12px;color:#244974;max-width:100%;overflow-wrap:anywhere}.usability-export{margin:12px 0 18px}.library-search .export-form{display:flex;gap:12px;align-items:end;flex-wrap:wrap}.results-heading{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:22px 0 12px}.results-heading h2{font-size:18px;margin:0}.results-heading span{color:#526176;font-size:14px}.library-search .doc-list{display:block}.library-search .doc-item{display:flex;gap:20px;padding:22px 24px;margin:0 0 10px;background:#fff;border:1px solid #dde5ef;border-radius:10px}.library-search .doc-main{flex:1;min-width:0}.library-search .doc-line1{display:flex;flex-wrap:wrap;align-items:center;gap:8px}.library-search .doc-title{font-size:18px;line-height:1.55;white-space:normal;overflow:visible;text-overflow:clip;overflow-wrap:anywhere}.library-search .doc-line2{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}.library-search .doc-summary{line-height:1.7;color:#48576b;overflow-wrap:anywhere;margin-bottom:0}.library-search .doc-actions{display:flex;align-items:start;gap:8px;flex-shrink:0}.library-search .doc-actions a{display:inline-flex;min-height:44px;align-items:center;padding:8px 12px;border:1px solid #b7c8de;border-radius:6px}.library-search .usability-category-label{font-weight:600}.library-search [data-category=gb] .usability-category-label{background:#eaf2ff;color:#1856a4}.library-search [data-category=hb] .usability-category-label{background:#e3f5f1;color:#126457}.library-search [data-category=regulation] .usability-category-label{background:#fff2d9;color:#835208}.library-search [data-category=policy] .usability-category-label{background:#f1ebfb;color:#6b409d}.library-search .pager{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:24px 0}.library-search .pager a,.library-search .pager span{display:inline-flex;align-items:center;justify-content:center;min-height:44px;min-width:44px;padding:8px}.search-empty{padding:32px;background:#fff;border:1px solid #dde5ef;border-radius:10px}.library-search .topbar-inner{max-width:1360px}.library-search .topnav{flex-wrap:wrap}.library-search .topnav a,.library-search .topnav button{min-height:44px;display:inline-flex;align-items:center}
@media(max-width:800px){.library-search .shell{padding:22px 20px}.filter-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.library-search .doc-item{padding:18px;display:block}.library-search .doc-actions{margin-top:14px}.library-search .topbar-inner{flex-wrap:wrap}.library-search .topnav{gap:8px}}
@media(max-width:480px){.library-search .shell{padding:20px 12px}.search-query-form{padding:16px}.query-row{flex-wrap:wrap}.query-row label{flex-basis:100%}.query-row button{width:100%}.filter-grid{grid-template-columns:minmax(0,1fr)}.library-search .topbar-inner{padding:12px}.library-search .brand-text{font-size:17px}.library-search .topnav{width:100%;gap:6px}.library-search .topnav a{font-size:13px}.search-heading h1{font-size:26px}.results-heading{align-items:start}.library-search .doc-title{font-size:17px}}
@media(prefers-reduced-motion:reduce){body.library-search:not(.archive-motion-enabled) *{animation:none!important;transition:none!important;scroll-behavior:auto!important}}