:root{--nav:#102a38;--ink:#162631;--muted:#64747d;--line:#dbe3e4;--canvas:#f4f6f4;--surface:#fff;--teal:#087f73;--teal-soft:#e4f3ef;--amber:#a86405;--amber-soft:#fff4df;--red:#b7493a;--radius:8px}*{box-sizing:border-box}body{margin:0;background:var(--canvas);color:var(--ink);font:14px/1.5 "Microsoft YaHei",Arial,sans-serif}.app-shell{min-height:100dvh;display:grid;grid-template-columns:248px minmax(0,1fr)}.sidebar{background:var(--nav);color:#edf6f5;padding:22px 14px;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:10px;padding:0 8px 25px;border-bottom:1px solid rgba(255,255,255,.13)}.brand-mark{width:34px;height:34px;display:grid;place-items:center;border:1px solid #78d1c4;font-size:18px;font-weight:700;color:#d5fffa}.brand strong{font-size:17px;display:block}.brand small{font-size:12px;color:#a9c0c4}.nav{display:grid;gap:5px;margin-top:21px}.nav-item{border:0;background:transparent;color:#c8d9dc;border-radius:6px;padding:11px;text-align:left;display:flex;align-items:center;gap:10px;font-weight:600}.nav-item:hover{background:rgba(255,255,255,.08)}.nav-item.active{background:#e4f3ef;color:#163b3b}.nav-item i{width:18px}.sidebar-bottom{margin-top:auto;border-top:1px solid rgba(255,255,255,.13);padding:16px 8px 0;font-size:12px;color:#acc0c5;display:flex;gap:8px;align-items:center}.indicator{width:8px;height:8px;border-radius:50%;background:#85979d}.indicator.ok{background:#64c6b8}.indicator.error{background:#e47c68}.main{min-width:0}.view{display:none;min-height:100dvh}.view.active{display:block}.topbar{height:88px;background:var(--surface);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:18px 30px}.eyebrow{margin:0;color:var(--teal);font-size:12px;font-weight:700}.topbar h1{font-size:22px;margin:2px 0 0;letter-spacing:0}.icon-button,.send-button{border:0;background:var(--teal);color:#fff;width:40px;height:40px;display:grid;place-items:center;border-radius:5px}.icon-button i,.send-button i{width:18px}.primary-button,.secondary-button,.upload-button{border-radius:5px;padding:9px 12px;font-weight:700;display:inline-flex;align-items:center;gap:7px;cursor:pointer}.primary-button{border:1px solid var(--teal);background:var(--teal);color:#fff}.secondary-button{border:1px solid #b8cfca;background:#fff;color:#1e635c}.primary-button i,.secondary-button i{width:16px}.chat-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;min-height:calc(100dvh - 88px)}.chat-pane{min-width:0;position:relative;padding:23px max(30px,calc((100vw - 248px - 820px)/2));padding-bottom:112px}.chat-controls{display:flex;justify-content:space-between;gap:12px;margin-bottom:28px}.chat-controls label{font-size:12px;color:var(--muted);display:grid;gap:4px}.chat-controls select,.library-toolbar select{border:1px solid var(--line);border-radius:5px;background:#fff;padding:8px;color:var(--ink);min-width:210px}.empty-chat{max-width:690px;margin:80px auto;text-align:center}.empty-icon{width:50px;height:50px;display:grid;place-items:center;border-radius:50%;background:var(--teal-soft);color:var(--teal);margin:auto}.empty-icon i{width:23px}.empty-chat h2{font-size:25px;margin:18px 0 7px}.empty-chat p{color:var(--muted);margin:0 auto;max-width:480px}.prompt-row{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:25px}.prompt{border:1px solid #b8d6d0;background:#fff;color:#21675f;padding:8px 11px;border-radius:5px}.messages{max-width:760px;margin:0 auto;display:grid;gap:20px}.message{display:grid;gap:7px}.message.user{justify-items:end}.message-label{color:var(--muted);font-size:12px;font-weight:700}.bubble{max-width:90%;padding:13px 15px;border-radius:var(--radius);white-space:pre-wrap}.user .bubble{background:var(--nav);color:#fff;border-bottom-right-radius:2px}.assistant .bubble{background:#fff;border:1px solid var(--line);border-bottom-left-radius:2px;box-shadow:0 4px 12px rgba(24,45,53,.05)}.message-note{font-size:12px;color:var(--amber);background:var(--amber-soft);padding:7px 9px;border-radius:4px}.composer{position:fixed;bottom:0;left:248px;right:330px;background:var(--canvas);padding:14px 30px 19px;display:flex;gap:9px;align-items:end}.composer textarea{flex:1;resize:none;min-height:48px;max-height:130px;padding:13px 14px;border:1px solid #bdcdca;border-radius:var(--radius);background:#fff;color:var(--ink);outline:0}.composer textarea:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(8,127,115,.15)}.evidence-pane{background:#fbfcfb;border-left:1px solid var(--line);padding:23px 17px;overflow:auto}.panel-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.panel-title h2{font-size:15px;margin:0}.panel-title span{font-size:12px;color:var(--muted)}.evidence-empty{color:var(--muted);text-align:center;padding:60px 24px}.evidence-empty i{width:30px;height:30px;color:#96aaa8}.evidence-list{display:grid;gap:9px}.evidence{border:1px solid var(--line);background:#fff;padding:11px;border-radius:6px}.evidence-header{display:flex;gap:8px;align-items:flex-start}.evidence-icon{color:var(--teal);margin-top:2px}.evidence strong{display:block;font-size:13px;line-height:1.35}.evidence small{color:var(--muted);display:block;margin-top:2px}.evidence p{margin:9px 0 0;font-size:12px;color:#44555d}.evidence a{font-size:12px;color:var(--teal);font-weight:700;text-decoration:none;display:inline-block;margin-top:8px}.library-content,.settings-content{padding:28px 30px;max-width:1280px;margin:auto}.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:23px}.stat{background:#fff;border:1px solid var(--line);padding:15px;border-radius:var(--radius)}.stat span{display:block;color:var(--muted);font-size:12px}.stat strong{display:block;font-size:27px;margin-top:3px}.library-toolbar{display:flex;gap:10px;margin-bottom:15px}.library-toolbar input{flex:1;padding:10px 12px;border:1px solid var(--line);border-radius:5px;min-width:180px}.upload-button{background:#fff;color:#245f59;border:1px solid #b9d3ce}.upload-button input{display:none}.table-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:auto}table{border-collapse:collapse;width:100%;min-width:800px}th,td{padding:12px;text-align:left;border-bottom:1px solid var(--line);font-size:13px}th{background:#f8faf9;color:var(--muted);font-weight:700}td:first-child{font-weight:700;max-width:300px}.status-tag{font-size:11px;padding:3px 6px;border-radius:4px;background:var(--teal-soft);color:#176b62}.status-tag.warning{background:var(--amber-soft);color:#915710}.archive{border:0;background:transparent;color:var(--red);cursor:pointer}.job-banner{padding:11px 13px;background:var(--teal-soft);color:#21645e;border-radius:5px;margin-bottom:14px}.hidden{display:none}.settings-content{display:grid;grid-template-columns:minmax(0,560px) minmax(260px,1fr);gap:52px;padding-top:46px}.settings-form{background:#fff;border:1px solid var(--line);padding:23px;border-radius:var(--radius)}.settings-form h2,.system-notes h2{font-size:18px;margin:0 0 7px}.settings-form>p{color:var(--muted);margin:0 0 18px}.settings-form label{display:grid;gap:6px;margin:13px 0;font-weight:700;font-size:13px}.settings-form input{border:1px solid var(--line);border-radius:5px;padding:10px 11px;font-weight:400}.settings-actions{display:flex;gap:9px;margin-top:20px}.form-message{min-height:20px;color:var(--teal);font-size:13px;margin-bottom:0!important}.form-message.error{color:var(--red)}.system-notes{padding-top:15px}.system-notes ul{padding-left:20px;color:#41535b}.system-notes li{margin:10px 0}.toast{position:fixed;right:22px;bottom:22px;background:#173c43;color:#fff;padding:11px 14px;border-radius:6px;opacity:0;transform:translateY(10px);pointer-events:none;transition:.2s}.toast.show{opacity:1;transform:none}@media(max-width:1050px){.chat-layout{grid-template-columns:1fr}.evidence-pane{display:none}.composer{right:0}.chat-pane{padding-left:35px;padding-right:35px}}@media(max-width:720px){.app-shell{display:block}.sidebar{min-height:auto;padding:14px}.brand{padding-bottom:12px}.nav{grid-template-columns:repeat(3,1fr);margin-top:12px}.nav-item{font-size:11px;display:grid;justify-items:center;padding:8px 4px}.sidebar-bottom{display:none}.topbar{padding:15px 18px;height:75px}.chat-pane{padding:18px 16px 100px}.chat-controls{align-items:end}.chat-controls select{min-width:145px}.composer{left:0;padding:11px 16px 15px}.empty-chat{margin:50px auto}.stat-grid{grid-template-columns:repeat(2,1fr)}.library-content,.settings-content{padding:20px 16px}.library-toolbar{flex-wrap:wrap}.library-toolbar input{width:100%;flex:none}.settings-content{display:block}.system-notes{margin-top:26px}.topbar h1{font-size:19px}}
.document-actions{display:flex;align-items:center;gap:10px;white-space:nowrap}.row-action{border:0;background:transparent;color:var(--teal);font:inherit;font-weight:700;text-decoration:none;cursor:pointer;padding:2px 0}.row-action:hover{text-decoration:underline}.row-action.danger{color:var(--red)}
.library-main{display:grid;grid-template-columns:340px minmax(0,1fr);gap:16px;align-items:start}.category-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:10px;position:sticky;top:16px}.category-panel-header{display:flex;justify-content:space-between;align-items:center;padding:5px 7px 11px;border-bottom:1px solid var(--line);margin-bottom:7px}.category-panel-header strong{display:block}.category-panel-header small{display:block;color:var(--muted);font-size:11px}.category-add{border:1px solid #b9d3ce;background:#fff;color:var(--teal);width:36px;height:36px;border-radius:4px;font-size:22px;cursor:pointer}.category-all{width:100%;border:0;background:transparent;padding:8px;text-align:left;border-radius:4px;color:var(--ink);cursor:pointer;display:flex;justify-content:space-between}.category-all:hover,.category-all.active{background:var(--teal-soft);color:#145f58;font-weight:700}.category-row{display:flex;align-items:center;border-radius:4px;padding-left:calc(var(--category-depth) * 14px);margin:3px 0}.category-row:hover,.category-row.active{background:#eef6f3}.category-select{min-width:0;flex:1;border:0;background:transparent;padding:8px 5px;text-align:left;display:flex;justify-content:space-between;gap:5px;cursor:pointer;color:var(--ink)}.category-select span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.category-select em{font-style:normal;color:var(--muted);font-size:11px}.category-tools{display:flex;gap:2px;padding-right:4px}.category-tools button{border:1px solid transparent;background:transparent;color:#35605d;font-size:11px;padding:4px 5px;border-radius:3px;cursor:pointer;white-space:nowrap}.category-tools button:hover{color:var(--teal);border-color:#b9d3ce;background:#fff}.category-tools button[data-action="delete"]{color:var(--red)}.document-panel{min-width:0}.batch-toolbar{display:flex;align-items:center;justify-content:flex-end;gap:9px;margin:-5px 0 10px;color:var(--muted);font-size:12px}.batch-toolbar select{border:1px solid var(--line);border-radius:5px;background:#fff;padding:8px;max-width:260px}.check-cell{width:36px!important;max-width:36px!important;text-align:center!important}.check-cell input{width:15px;height:15px}.document-panel table{min-width:1100px}.chat-controls.user-mode{display:none}@media(max-width:1100px){.library-main{grid-template-columns:290px minmax(0,1fr)}}@media(max-width:900px){.library-main{display:block}.category-panel{position:static;margin-bottom:14px}.category-tree{max-height:260px;overflow:auto}.document-panel .library-toolbar{display:grid;grid-template-columns:1fr 1fr}.document-panel .library-toolbar input{grid-column:1/-1}.batch-toolbar{justify-content:flex-start;flex-wrap:wrap}}
.mobile-only{display:none}@media(max-width:720px){html{-webkit-text-size-adjust:100%}body{font-size:14px;padding-bottom:env(safe-area-inset-bottom)}button,input,select,textarea{font-size:16px}.app-shell{display:block}.sidebar{position:sticky;top:0;z-index:20;padding:8px 10px;box-shadow:0 2px 8px rgba(16,42,56,.16)}.brand{display:none}.nav{grid-template-columns:repeat(4,minmax(0,1fr));margin:0;gap:3px}.nav-item{min-width:0;padding:8px 2px;font-size:10px;line-height:1.2;display:grid;justify-items:center;gap:3px}.nav-item i{width:16px;height:16px}.mobile-only{display:grid}.session-panel{display:none}.app-shell.history-open .session-panel{display:block;max-height:46dvh;overflow:auto;padding:10px 4px 4px}.sidebar-bottom{display:none}.topbar{height:auto;min-height:64px;padding:11px 14px;gap:10px;align-items:flex-start}.topbar h1{font-size:18px;line-height:1.25}.topbar-actions{gap:6px;flex-wrap:wrap;justify-content:flex-end}.model-badge{font-size:11px;max-width:132px;text-align:right}.icon-button,.send-button{width:44px;height:44px}.chat-layout{display:flex;flex-direction:column;min-height:0}.chat-pane{padding:14px 14px 118px}.chat-controls{margin-bottom:18px;align-items:end}.chat-controls label{flex:1;min-width:0}.chat-controls select{width:100%;min-width:0}.chat-controls .secondary-button{padding:10px;font-size:12px}.empty-chat{margin:36px auto}.empty-chat h2{font-size:21px}.empty-chat p{font-size:13px}.prompt-row{justify-content:flex-start}.prompt{font-size:13px}.messages{gap:15px}.bubble{max-width:96%;padding:12px;font-size:15px}.composer{left:0;right:0;bottom:0;padding:9px 12px calc(9px + env(safe-area-inset-bottom));gap:8px;border-top:1px solid var(--line);z-index:15}.composer textarea{min-height:46px;padding:11px 12px;font-size:16px}.evidence-pane{display:block;order:2;border-left:0;border-top:1px solid var(--line);padding:16px 14px;background:#fbfcfb;overflow:visible}.evidence-empty{padding:24px}.evidence-list{gap:8px}.evidence p{font-size:13px}.library-content,.settings-content{padding:16px 12px}.stat-grid{gap:8px;margin-bottom:14px}.stat{padding:11px}.stat strong{font-size:22px}.topbar+.library-content{padding-top:14px}.category-panel{padding:8px}.category-tree{max-height:220px}.category-tools{display:flex}.category-tools button{font-size:12px;padding:6px}.library-toolbar{display:grid!important;grid-template-columns:1fr 1fr;gap:8px}.library-toolbar input{grid-column:1/-1!important;width:100%}.library-toolbar select{min-width:0!important;width:100%}.upload-button{justify-content:center;padding:10px}.batch-toolbar{margin:0 0 10px;align-items:stretch}.batch-toolbar span{width:100%}.batch-toolbar select{flex:1;min-width:0}.batch-toolbar .secondary-button{padding:8px 10px}.document-panel table{min-width:0}.document-panel th,.document-panel td{padding:9px 6px;font-size:12px;vertical-align:top}.document-panel td:first-child{max-width:none}.mobile-hide{display:none}.check-cell{width:31px!important;max-width:31px!important}.document-actions{display:grid;gap:5px}.row-action{font-size:12px}.settings-content{padding-bottom:26px}.management-grid{gap:12px}.settings-form,.management-card{padding:15px}.settings-actions{flex-wrap:wrap}.toast{left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom));text-align:center}.auth-screen{padding:16px}.auth-card{width:100%;padding:22px 18px}}
.role-hidden{display:none!important}
.auth-switch{margin:16px 0 0!important;text-align:center;color:var(--muted);font-size:13px}.text-button{border:0;background:transparent;color:var(--teal);font:inherit;font-weight:700;padding:0;cursor:pointer;text-decoration:underline}.auth-form .text-button:focus{outline:2px solid rgba(8,127,115,.28);outline-offset:2px}
.icp-link{margin:0;text-align:center;font-size:12px}.icp-link a{color:var(--muted);text-decoration:none}.icp-link a:hover{text-decoration:underline}.auth-icp{margin-top:18px}.sidebar-icp{padding:0 8px 8px}.sidebar-icp a{color:rgba(255,255,255,.62)}

/* Keep category counts and document columns visually aligned. */
.category-select{display:grid;grid-template-columns:minmax(0,1fr) 38px;align-items:center}
.category-select em{width:38px;text-align:right;font-variant-numeric:tabular-nums}
.category-tools{flex:0 0 126px;justify-content:flex-end}
.document-panel table{table-layout:fixed;min-width:1280px}
.document-panel th,.document-panel td{vertical-align:middle}
.document-panel th:nth-child(1),.document-panel td:nth-child(1){width:40px}
.document-panel th:nth-child(2),.document-panel td:nth-child(2){width:250px}
.document-panel th:nth-child(3),.document-panel td:nth-child(3){width:130px}
.document-panel th:nth-child(4),.document-panel td:nth-child(4){width:170px}
.document-panel th:nth-child(5),.document-panel td:nth-child(5){width:90px}
.document-panel th:nth-child(6),.document-panel td:nth-child(6){width:190px}
.document-panel th:nth-child(7),.document-panel td:nth-child(7){width:150px;white-space:nowrap}
.document-panel th:nth-child(8),.document-panel td:nth-child(8){width:260px}
.document-panel td:nth-child(2),.document-panel td:nth-child(3),.document-panel td:nth-child(4){overflow-wrap:anywhere;line-height:1.45}
.document-panel th:nth-child(5),.document-panel td:nth-child(5),.document-panel th:nth-child(6),.document-panel td:nth-child(6),.document-panel th:nth-child(7),.document-panel td:nth-child(7){text-align:center}
@media(max-width:720px){.category-tools{flex-basis:130px}.document-panel table{table-layout:auto;min-width:0}.document-panel th:nth-child(2),.document-panel td:nth-child(2){width:auto}.document-panel th:nth-child(3),.document-panel td:nth-child(3){width:84px}.document-panel th:nth-child(8),.document-panel td:nth-child(8){width:96px}}