*{box-sizing:border-box}body{margin:0;font:14px/1.5 Arial,"Microsoft YaHei",sans-serif;background:#f5f7fb;color:#172033}button,input,select,textarea{font:inherit}.primary{background:#1677ff!important;color:#fff!important;border-color:#1677ff!important}.btn,button{border:1px solid #d7deea;background:#fff;border-radius:7px;padding:8px 14px;text-decoration:none;color:#26344d;cursor:pointer}.disabled{background:#e7ebf0!important;color:#9aa4b2!important;cursor:not-allowed}.danger{color:#e5484d!important}.inline{display:inline}.flashes{position:fixed;top:14px;left:50%;transform:translateX(-50%);z-index:99}.flash{padding:10px 18px;border-radius:8px;background:#fff;box-shadow:0 5px 20px #0002;margin:5px}.flash.error{color:#c33}.flash.ok{color:#087f5b}
.login-wrap{min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#dff0ff,#f7fbff)}.login-card{width:390px;background:#fff;padding:34px;border-radius:16px;box-shadow:0 18px 60px #1d5d9b26}.brand{display:flex;gap:14px;align-items:center}.brand h1{margin:0}.brand p,.muted{color:#78849a}.cube{font-size:38px;color:#1677ff}.login-card label{display:block;margin:14px 0}.login-card input{width:100%;padding:11px;border:1px solid #d8deea;border-radius:7px;margin-top:5px}.login-card button{width:100%}
.client-head,.topbar{height:62px;background:#fff;border-bottom:1px solid #e1e6ef;display:flex;align-items:center;justify-content:space-between;padding:0 24px}.client-layout{display:grid;grid-template-columns:190px 1fr;max-width:1400px;margin:auto}.cats{background:#fff;min-height:calc(100vh - 62px);padding:20px 12px;position:relative}.cats a{display:flex;justify-content:space-between;padding:10px 12px;text-decoration:none;color:#33415c;border-radius:7px}.cats a:hover{background:#edf5ff;color:#1677ff}.disk{position:absolute;bottom:24px;padding:12px;font-size:12px;color:#78849a}.library{padding:20px}.search{display:flex;gap:8px;margin-bottom:18px}.search input{width:min(600px,70vw);padding:10px;border:1px solid #d8deea;border-radius:7px}.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}.card{background:#fff;border:1px solid #e1e6ef;border-radius:10px;padding:16px}.card-title{display:flex;gap:12px}.card-title img,.placeholder{width:54px;height:54px;object-fit:contain}.placeholder{display:grid;place-items:center;background:#eaf3ff;border-radius:12px;color:#1677ff}.card h3{margin:0 0 2px}.card small{display:block}.card em{font-style:normal;color:#1677ff;background:#eaf3ff;padding:2px 6px;border-radius:4px;font-size:12px}.card p{height:42px;overflow:hidden;color:#536079}.meta{display:flex;justify-content:space-between;color:#78849a;font-size:12px}.actions{display:flex;gap:8px;margin-top:12px}.actions>*{flex:1;text-align:center}.dropdown{position:relative}.menu{display:none;position:absolute;right:0;bottom:40px;background:#fff;border:1px solid #d8deea;border-radius:8px;min-width:150px;box-shadow:0 8px 25px #0002;z-index:5}.dropdown.open .menu{display:block}.menu button{display:block;width:100%;border:0;border-radius:0;text-align:left}.empty{padding:60px;text-align:center;color:#8994a7}
.admin-layout{display:grid;grid-template-columns:210px 1fr;min-height:100vh}.admin-side{background:#142238;color:#fff;padding:22px 12px}.admin-side h2{font-size:16px;padding:0 10px 18px}.admin-side a{display:block;color:#dbe7f7;text-decoration:none;padding:11px 12px;border-radius:7px}.admin-side a:hover{background:#1f5da8}.admin-main{min-width:0}.panel{background:#fff;margin:20px;padding:20px;border:1px solid #e1e6ef;border-radius:10px;overflow:auto}.panel-head{display:flex;align-items:center;justify-content:space-between}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;margin:20px}.stats div{background:#fff;border:1px solid #e1e6ef;border-radius:10px;padding:22px}.stats b{display:block;font-size:28px}.stats span{color:#78849a}table{width:100%;border-collapse:collapse}th,td{padding:11px;border-bottom:1px solid #e8ecf2;text-align:left}th{background:#f7f9fc}.ops{display:flex;gap:6px;align-items:center}.ops form{display:inline-flex;gap:5px}.ops input{max-width:120px}.badge{padding:3px 8px;border-radius:12px}.badge.on{background:#dcf8e8;color:#16804b}.badge.off{background:#f0f1f3;color:#7a8493}.add-row{display:flex;gap:8px;margin-bottom:18px}.add-row input,.form-panel input,.form-panel select,.form-panel textarea{padding:9px;border:1px solid #d8deea;border-radius:7px}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:15px}.form-panel label{display:block;margin:10px 0}.form-panel label>input,.form-panel label>select,.form-panel label>textarea{display:block;width:100%;margin-top:5px}.form-panel label.inline{display:inline-flex;align-items:center;gap:6px}.form-panel label.inline input{width:auto;margin:0}.link-row{display:grid;grid-template-columns:220px 1fr auto;gap:8px;margin:8px 0}.form-actions{display:flex;gap:8px;margin-top:20px}.small{width:70px}
@media(max-width:800px){.client-layout,.admin-layout{grid-template-columns:1fr}.cats,.admin-side{min-height:auto}.disk{position:static}.cards{grid-template-columns:1fr}.stats{grid-template-columns:1fr 1fr}.grid2{grid-template-columns:1fr}.link-row{grid-template-columns:1fr}.admin-side a{display:inline-block}}


/* Stage 3.1 - client layout refinements */
.client-layout{grid-template-columns:210px minmax(0,1fr);max-width:none}
.library{padding:24px 28px}
.search{max-width:980px}
.search input{width:min(760px,calc(100vw - 420px))}
.cards{grid-template-columns:repeat(auto-fill,minmax(330px,1fr));gap:18px;align-items:stretch}
.card{min-height:245px;display:flex;flex-direction:column;padding:18px;box-shadow:0 2px 8px rgba(31,48,78,.04)}
.card-title{align-items:flex-start}
.card-title img,.placeholder{width:58px;height:58px;flex:0 0 58px}
.card-title>div:last-child{min-width:0}
.card h3{font-size:18px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.card p{height:auto;min-height:44px;max-height:66px;margin:16px 0 10px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.meta{margin-top:auto;padding-top:8px;border-top:1px solid #eef1f5}
.actions{margin-top:14px}
.actions>.btn,.actions>.dropdown{min-width:0}
.actions .btn{display:flex;align-items:center;justify-content:center;min-height:38px}
.dropdown{position:relative}
.dropdown>.btn{width:100%}
.menu{right:0;left:auto;bottom:44px;min-width:190px;max-width:280px;padding:5px;overflow:hidden}
.menu button{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;border-radius:5px;padding:9px 10px}
.menu button:hover{background:#f1f6ff;color:#1677ff}
@media(min-width:1500px){.cards{grid-template-columns:repeat(auto-fill,minmax(360px,1fr))}}
@media(max-width:800px){
  .client-layout{grid-template-columns:1fr}
  .library{padding:16px}
  .search input{width:100%}
  .cards{grid-template-columns:1fr}
}

/* Stage 4 chunk uploader */
.panel-tools{display:flex;gap:8px;align-items:center}.panel-tools form{margin:0}
.upload-box{margin:18px 0;padding:16px;border:1px solid #dce4ef;border-radius:10px;background:#f8fbff}
.upload-title{display:flex;justify-content:space-between;gap:16px;align-items:center;margin-bottom:10px}
.upload-title span{color:#78849a;font-size:12px}.upload-note{padding:12px;border-radius:7px;background:#fff6dd;color:#7b5b00}
.current-file{margin:8px 0 12px}.upload-actions{display:flex;gap:8px;margin-top:10px}
.upload-progress{margin-top:14px}.progress-track{height:12px;background:#e4eaf2;border-radius:999px;overflow:hidden}
.progress-bar{height:100%;width:0;background:#1677ff;transition:width .15s}.upload-progress #upload-status{margin-top:8px;color:#536079;word-break:break-all}
/* Stage 4.1 client refresh */
.login-v2{min-height:100vh;display:grid;place-items:center;background:radial-gradient(circle at 15% 25%,#dceaff 0 3%,transparent 3.2%),linear-gradient(135deg,#f7fbff,#eaf3ff)}.login-v2-card{width:390px;background:#fff;padding:38px;border-radius:20px;box-shadow:0 18px 50px #6b8dbb22;text-align:center}.login-logo{width:92px;height:92px;object-fit:contain}.login-v2-card h1{margin:8px 0 28px}.login-v2-card label{text-align:left;display:block;margin:14px 0}.login-v2-card input{width:100%;box-sizing:border-box;margin-top:7px;padding:13px;border:1px solid #d8e0ec;border-radius:8px}.login-v2-card button{width:100%;padding:13px;margin-top:8px}
.lib-head{height:68px;background:#fff;border-bottom:1px solid #e5eaf2;display:grid;grid-template-columns:280px 1fr 270px;align-items:center;gap:20px;padding:0 24px;box-sizing:border-box}.lib-brand{display:flex;align-items:center;gap:12px}.lib-brand img{width:48px;height:48px;object-fit:contain}.lib-brand b{font-size:21px}.lib-brand small{display:block;color:#8090a8;margin-top:3px}.lib-search{display:flex;max-width:760px;width:100%;margin:auto;position:relative}.lib-search input{height:42px;flex:1;border:1px solid #d8e0ec;border-radius:8px 0 0 8px;padding:0 14px 0 42px;box-sizing:border-box}.lib-search .search-icon{position:absolute;left:15px;top:0;height:42px;display:flex;align-items:center;justify-content:center;font-size:23px;color:#3975f6;line-height:1}.lib-search button{width:90px;border-radius:0 8px 8px 0}.lib-user{text-align:right}.lib-shell{display:grid;grid-template-columns:215px 1fr;min-height:calc(100vh - 108px);background:#f5f8fd}.lib-side{background:#fff;border-right:1px solid #e7edf5;padding:18px 14px;position:relative}.lib-side>a{display:grid;grid-template-columns:30px 1fr 28px;align-items:center;gap:6px;padding:11px 10px;margin:3px 0;border-radius:8px;text-decoration:none;color:#253651}.lib-side>a.active{background:#edf4ff;color:#2563eb;border-left:3px solid #3975f6}.lib-side>a img{width:24px;height:24px;object-fit:contain}.lib-side a i{font-style:normal;text-align:center;background:#eef3fb;border-radius:14px;padding:3px;color:#6f7f98}.cat-default{text-align:center;font-size:20px}.disk-card{position:absolute;bottom:18px;left:14px;right:14px;border:1px solid #e1e8f2;border-radius:10px;padding:12px}.disk-bar{height:8px;background:#e5ebf4;border-radius:10px;margin:10px 0;overflow:hidden}.disk-bar span{display:block;height:100%;background:#3975f6}.disk-card strong,.disk-card small{display:block;font-size:12px;margin-top:5px}.lib-main{padding:18px 24px}.hero{min-height:170px;border-radius:14px;padding:28px 32px;box-sizing:border-box;background:linear-gradient(120deg,#eef6ff,#dfeaff);display:flex;justify-content:space-between}.hero h1{font-size:30px;margin:0 0 12px}.hero p{line-height:1.7;color:#64748b}.hero-tags{display:flex;gap:10px;flex-wrap:wrap}.hero-tags span{background:#ffffffb8;color:#3975f6;padding:6px 10px;border-radius:18px}.hero-art{align-self:center;font-size:48px;color:#3975f6;opacity:.75}.lib-main .stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:16px 0}.lib-main .stats>div{background:#fff;border:1px solid #e4eaf3;border-radius:12px;padding:18px;display:flex;gap:16px;align-items:center}.lib-main .stats>div>span{width:48px;height:48px;border-radius:12px;background:#eef4ff;display:grid;place-items:center;font-size:25px;color:#3975f6}.lib-main .stats p{margin:0}.lib-main .stats b{display:block;font-size:22px;margin-top:5px}.list-title{display:flex;justify-content:space-between;align-items:center;border-left:4px solid #3975f6;padding-left:10px;margin:16px 0 12px}.list-title h2{font-size:20px;margin:0}.list-title span{color:#8290a6}.lib-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(310px,340px));gap:16px}.lib-card{width:auto!important}.lib-card .card-title img{width:56px;height:56px}.lib-footer{height:40px;display:flex;align-items:center;justify-content:space-between;padding:0 24px 0 238px;color:#8a98ad;border-top:1px solid #e5eaf2;background:#fff}@media(max-width:900px){.lib-head{grid-template-columns:1fr}.lib-brand,.lib-user{display:none}.lib-shell{grid-template-columns:1fr}.lib-side{display:none}.stats{grid-template-columns:1fr 1fr}.lib-footer{padding-left:24px}}

/* Stage 4.1.2 scoped UI refinements */
.lib-brand img{width:54px;height:54px}
.lib-search .search-icon{width:42px;left:0;top:0;height:42px;display:flex;align-items:center;justify-content:center;pointer-events:none}
.lib-search .search-icon svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;display:block}
.lib-search input{padding-left:42px}
.lib-card .actions{align-items:stretch}
.lib-card .actions>.btn,.lib-card .actions>.dropdown{height:40px;min-height:40px}
.lib-card .actions .btn{height:40px;min-height:40px;padding:0 12px;line-height:1;display:flex;align-items:center;justify-content:center}
.lib-card .dropdown>.btn{gap:8px}
.lib-card .dropbtn .chev{font-size:12px;line-height:1;margin-left:2px}
.lib-card .menu{bottom:44px}
@media(max-width:900px){.lib-main .stats{grid-template-columns:1fr 1fr}}

/* Stage 4.1.3 admin category management alignment */
.category-table{table-layout:fixed}
.category-table th:nth-child(1),.category-table td:nth-child(1){width:36%}
.category-table th:nth-child(2),.category-table td:nth-child(2){width:26%}
.category-table th:nth-child(3),.category-table td:nth-child(3){width:8%}
.category-table th:nth-child(4),.category-table td:nth-child(4){width:12%}
.category-table th:nth-child(5),.category-table td:nth-child(5){width:18%}
.category-table td{vertical-align:middle;height:72px;box-sizing:border-box}
.category-icon-editor{display:grid;grid-template-columns:44px minmax(0,1fr);gap:10px;align-items:center;min-height:50px}
.category-icon-preview{width:40px;height:40px;display:flex;align-items:center;justify-content:center;flex:0 0 40px}
.category-icon-preview img{width:36px;height:36px;object-fit:contain;display:block}
.category-icon-placeholder{width:36px;height:36px;border-radius:8px;background:#f2f5fa;color:#8996aa;display:flex;align-items:center;justify-content:center;font-size:18px}
.category-icon-controls{min-width:0;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.category-icon-controls input[type=file]{max-width:230px}
.category-remove-icon{display:inline-flex;align-items:center;gap:4px;white-space:nowrap;font-size:12px;color:#6f7d91}
.category-remove-icon input{margin:0}
.category-table td>input[name=name]{width:180px;max-width:100%;box-sizing:border-box}
.category-table .ops{height:72px;box-sizing:border-box}
@media(max-width:900px){.category-table{table-layout:auto}.category-icon-editor{grid-template-columns:40px minmax(180px,1fr)}.category-icon-controls{align-items:flex-start;flex-direction:column;gap:5px}}

/* Portal management V1 */
.portal-row{display:grid;grid-template-columns:minmax(130px,1.2fr) 90px minmax(150px,1fr) minmax(170px,1.2fr) auto auto minmax(130px,1fr) auto;gap:10px;align-items:center;padding:12px 0;border-bottom:1px solid #e9eef5}.portal-row input,.portal-row select{min-width:0}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px}.form-grid label{display:flex;flex-direction:column;gap:6px}.form-grid .full{grid-column:1/-1}.form-grid textarea{min-height:72px;resize:vertical}@media(max-width:1100px){.portal-row{grid-template-columns:1fr 1fr}.form-grid{grid-template-columns:1fr}.form-grid .full{grid-column:auto}}

/* V2.2.6.1 private library compact UI + collapsible category sidebar */
.lib-shell{transition:grid-template-columns .22s ease}
.lib-main{min-width:0;padding:14px 20px 18px}
.hero{min-height:128px;padding:20px 26px;align-items:center}
.hero h1{font-size:27px;margin:0 0 7px}
.hero p{margin:0 0 10px;line-height:1.55}
.hero-tags{gap:7px}.hero-tags span{padding:4px 8px;font-size:12px}
.hero-art{font-size:40px}
.lib-main .stats{gap:12px;margin:12px 0}
.lib-main .stats>div{padding:12px 15px;gap:12px;min-height:68px}
.lib-main .stats>div>span{width:40px;height:40px;border-radius:10px}
.lib-main .stats b{font-size:20px;margin-top:2px}
.list-title{margin:12px 0 9px}.list-title h2{font-size:18px}
.lib-cards{grid-template-columns:repeat(6,minmax(0,1fr));gap:12px}
.lib-card{min-height:206px!important;padding:13px!important;border-radius:9px}
.lib-card .card-title{gap:9px}.lib-card .card-title img,.lib-card .placeholder{width:44px!important;height:44px!important;flex:0 0 44px}
.lib-card h3{font-size:16px!important}.lib-card small{font-size:11px}.lib-card em{font-size:11px;padding:1px 5px}
.lib-card p{min-height:32px!important;max-height:38px!important;margin:9px 0 6px!important;-webkit-line-clamp:2!important;font-size:12px}
.lib-card .meta{padding-top:6px;font-size:11px}.lib-card .actions{margin-top:8px!important;gap:6px}
.lib-card .actions>.btn,.lib-card .actions>.dropdown,.lib-card .actions .btn{height:34px!important;min-height:34px!important;font-size:12px}
.lib-card .menu{bottom:38px}
.lib-side-toggle{position:fixed;left:198px;top:50%;transform:translateY(-50%);width:28px;height:38px;padding:0;border:1px solid #dce5f2;border-radius:0 8px 8px 0;background:#fff;box-shadow:0 2px 8px rgba(25,50,85,.09);z-index:40;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:left .22s ease,background .15s ease}
.lib-side-toggle:hover{background:#f5f8ff;border-color:#bcd0f4}
.lib-side-toggle img{display:block;width:20px;height:18px;object-fit:contain;transform:none;transition:transform .22s ease;pointer-events:none}
body.lib-side-collapsed .lib-shell{grid-template-columns:0 minmax(0,1fr)}
body.lib-side-collapsed .lib-side{visibility:hidden;overflow:hidden;padding:0;border:0}
body.lib-side-collapsed .lib-side-toggle{left:0}
body.lib-side-collapsed .lib-side-toggle img{transform:rotate(180deg)}
body.lib-side-collapsed .lib-footer{padding-left:24px}
.lib-side,.lib-footer{transition:all .22s ease}
@media(max-width:1600px){.lib-cards{grid-template-columns:repeat(5,minmax(0,1fr))}}
@media(max-width:1366px){.lib-cards{grid-template-columns:repeat(4,minmax(0,1fr))}.hero-art{font-size:34px}}
@media(max-width:1100px){.lib-cards{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:900px){.lib-side-toggle{display:none}.lib-main{padding:14px}.hero{min-height:120px;padding:18px}.hero-art{display:none}.lib-cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:620px){.lib-cards{grid-template-columns:1fr}.lib-main .stats{grid-template-columns:1fr 1fr}}


/* V2.2.6.3 private library fixed category sidebar */
.lib-side{position:sticky;top:0;height:calc(100vh - 68px);align-self:start;box-sizing:border-box;display:flex;flex-direction:column;overflow:hidden;padding:18px 14px}
.lib-side-nav{flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;padding-right:2px;scrollbar-width:thin;scrollbar-color:#cbd7e8 transparent}
.lib-side-nav::-webkit-scrollbar{width:6px}
.lib-side-nav::-webkit-scrollbar-thumb{background:#cbd7e8;border-radius:8px}
.lib-side-nav::-webkit-scrollbar-track{background:transparent}
.lib-side-nav>a{display:grid;grid-template-columns:30px 1fr 28px;align-items:center;gap:6px;padding:11px 10px;margin:3px 0;border-radius:8px;text-decoration:none;color:#253651}
.lib-side-nav>a.active{background:#edf4ff;color:#2563eb;border-left:3px solid #3975f6}
.lib-side-nav>a img{width:24px;height:24px;object-fit:contain}
.lib-side-nav a i{font-style:normal;text-align:center;background:#eef3fb;border-radius:14px;padding:3px;color:#6f7f98}
.lib-side .disk-card{position:static;flex:0 0 auto;margin-top:12px}
body.lib-side-collapsed .lib-side{display:flex;visibility:hidden;overflow:hidden;padding:0;border:0}
@media(max-width:900px){.lib-side{position:relative;top:auto;height:auto;display:none}}

/* V2.2.6.4 private library fixed header + sidebar + footer */
.lib-head{position:fixed;top:0;left:0;right:0;z-index:80}
.lib-shell{margin-top:68px;min-height:calc(100vh - 108px)}
.lib-side{position:sticky;top:68px;height:calc(100vh - 108px)}
.lib-main{padding-bottom:58px}
.lib-footer{position:fixed;left:0;right:0;bottom:0;z-index:70;box-sizing:border-box}
.lib-side-toggle{z-index:90}
@media(max-width:900px){
  .lib-head{position:relative;top:auto;left:auto;right:auto}
  .lib-shell{margin-top:0}
  .lib-side{position:relative;top:auto;height:auto}
  .lib-footer{position:relative;left:auto;right:auto;bottom:auto}
  .lib-main{padding-bottom:14px}
}