*{box-sizing:border-box}body.simple-app{margin:0;background:#f6f8fc;color:#17243b;font:15px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif}button,input,a{-webkit-tap-highlight-color:transparent}button,input{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #91b5ff;outline-offset:3px}[hidden]{display:none!important}.topbar{height:88px;background:#fff;border-bottom:1px solid #e7ebf3;display:flex;align-items:center;justify-content:space-between;padding:0 max(28px,calc((100vw - 1160px)/2))}.brand{display:flex;gap:12px;align-items:center;font-size:20px;font-weight:750;letter-spacing:.3px}.brand-icon{display:grid;place-items:center;width:44px;height:44px;border-radius:14px;background:#3168ed;color:white;font-size:30px}.brand small{display:block;font-size:11px;font-weight:400;color:#8793a7;letter-spacing:1px}.header-actions{display:flex;gap:20px;align-items:center}.private-badge{font-size:12px;color:#588074}.logout{color:#8b95a7;font-size:13px}.workspace{max-width:1160px;margin:auto;padding:40px 28px}.welcome{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}.eyebrow{font-size:10px;letter-spacing:2.2px;color:#74849e;font-weight:650}h1{font-size:30px;letter-spacing:-.7px;margin:9px 0 6px}h2,h3,p{margin:0}.welcome p{color:#8390a5;font-size:14px}.space-note{background:#eaf0fa;color:#72839e;padding:6px 12px;border-radius:20px;font-size:12px}.upload-zone{display:flex;align-items:center;gap:20px;background:#fff;border:1.5px dashed #afc5f3;border-radius:18px;padding:32px;margin-bottom:30px;transition:.2s}.upload-zone.dragover{background:#eaf1ff;border-color:#3168ed;box-shadow:0 0 0 4px #3168ed12}.upload-symbol{display:grid;place-items:center;flex-shrink:0;width:64px;height:64px;border-radius:18px;background:#edf3ff;color:#3168ed;font-size:36px}.upload-zone h2{font-size:18px;font-weight:650;margin-bottom:4px}.upload-zone p{font-size:13px;color:#8a97ab}.button{border:1px solid transparent;display:inline-flex;gap:6px;align-items:center;justify-content:center;min-height:40px;padding:9px 17px;border-radius:9px;font-weight:550;font-size:13px;white-space:nowrap}.primary{background:#3168ed;color:#fff;box-shadow:0 3px 8px #3168ed18}.primary:hover{background:#2456d0}.subtle{background:#fff;border-color:#e2e8f1;color:#64748b}.subtle:hover{background:#f3f6fc;color:#3168ed}.upload-zone>.button{margin-left:auto;min-height:46px;padding:12px 24px}.upload-panel{background:#fff;padding:20px;border:1px solid #e3eaf8;border-radius:14px;margin:-14px 0 30px}.progress-heading{display:flex;justify-content:space-between;font-size:13px;gap:15px}.progress-heading strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}progress{width:100%;height:7px;accent-color:#3168ed;margin:12px 0}.upload-panel p{font-size:12px;color:#8a97ab}.upload-panel button{margin-top:10px}.files-section{background:white;border:1px solid #e7ebf2;border-radius:18px;padding:25px}.section-heading{display:flex;justify-content:space-between;align-items:center;gap:14px}.section-heading h2{font-size:18px}.count{font-size:11px;margin-left:6px;padding:3px 8px;border-radius:6px;background:#f0f3f9;color:#8491a6;vertical-align:middle}.section-heading p{font-size:12px;color:#8a97ab;margin-top:3px}.file-tools{display:flex;gap:10px}.search-box{display:flex;align-items:center;gap:8px;border:1px solid #e5eaf2;border-radius:9px;padding:6px 12px;color:#8a97ab}.search-box input{border:0;outline:none;background:transparent;width:145px;color:#334155;font-size:13px;min-width:0}.filters{display:flex;gap:8px;margin:23px 0}.filter{border:0;border-radius:8px;background:transparent;color:#8792a5;padding:7px 16px;font-size:13px}.filter.active{background:#eaf1ff;color:#3168ed;font-weight:600}.file-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.file-card{border:1px solid #e8edf5;border-radius:12px;overflow:hidden;transition:transform .2s,box-shadow .2s;background:#fff;min-width:0}.file-card:hover{transform:translateY(-2px);box-shadow:0 6px 22px #20375b0c;border-color:#c5d5f5}.file-thumb{position:relative;display:flex;align-items:center;justify-content:center;width:100%;height:142px;border:0;border-bottom:1px solid #eef1f6;background:#f5f7fb;overflow:hidden;padding:0}.file-thumb img{width:100%;height:100%;object-fit:cover}.file-type{padding:9px 12px;border-radius:10px;background:#e8efff;color:#4a78dd;font-size:21px;font-weight:700;max-width:90%;overflow:hidden;text-overflow:ellipsis}.kind-video .file-type{background:#efeaff;color:#8c6ada}.kind-audio .file-type{background:#fff0e3;color:#cc9760}.kind-document .file-type{background:#e7f3f1;color:#4e9c8f}.file-info{padding:12px 13px}.file-name{display:block;width:100%;padding:0;border:0;background:none;text-align:left;color:#34445c;font-size:13px;font-weight:550;white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.file-meta{font-size:11px;color:#98a2b3;margin-top:5px}.card-actions{display:flex;gap:12px;margin-top:11px;border-top:1px solid #f0f3f8;padding-top:10px}.card-actions button,.card-actions a{border:0;padding:2px 0;background:none;font-size:12px;color:#5781dc}.card-actions a{margin-left:auto}.empty-state{text-align:center;padding:52px 12px;color:#a6b2c5}.empty-state>div{font-size:38px}.empty-state h3{font-size:15px;color:#7b8ba4;margin:8px}.empty-state p{font-size:12px}footer{font-size:11px;color:#a4afc0;text-align:center;padding:26px 0}.preview-dialog{padding:0;border:1px solid #e0e6f0;border-radius:16px;width:min(1060px,94vw);max-width:94vw;height:min(820px,92dvh);max-height:92dvh;background:#f6f8fc;color:#26354c}.preview-dialog::backdrop,.share-dialog::backdrop{background:#14223b99;backdrop-filter:blur(4px)}.preview-header{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:16px 20px;background:white;border-bottom:1px solid #e4eaf3}.preview-header>div:first-child{min-width:0}.preview-header>div:last-child{display:flex;align-items:center;gap:12px;flex-shrink:0}.preview-header h2{font-size:16px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.preview-header p{font-size:11px;color:#8a97ab}.icon-button{border:0;background:#f1f4f9;color:#75849d;border-radius:8px;width:36px;height:36px;font-size:23px}.preview-body{overflow:auto;height:calc(100% - 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@media(min-width:1500px){.workspace{padding-top:50px}}@media(max-width:950px){.file-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.space-note{display:none}}@media(max-width:650px){.topbar{height:74px;padding:0 18px}.brand{font-size:17px;gap:9px}.brand-icon{width:38px;height:38px;border-radius:11px}.brand small{font-size:9px}.header-actions{gap:12px}.private-badge{display:none}.header-actions .button{font-size:12px;padding:7px 10px;min-height:34px}.workspace{padding:26px 16px}.eyebrow{font-size:9px}h1{font-size:25px}.welcome{margin-bottom:22px}.welcome p{font-size:12px}.upload-zone{display:grid;grid-template-columns:46px 1fr;padding:22px 18px;gap:14px;margin-bottom:22px}.upload-symbol{width:46px;height:46px;font-size:28px;border-radius:12px}.upload-zone h2{font-size:16px}.upload-zone p{font-size:11px}.upload-zone>.button{grid-column:1/-1;margin:4px 0 0;width:100%;min-height:44px}.files-section{padding:18px 14px;border-radius:14px}.section-heading{flex-wrap:wrap}.file-tools{width:100%}.search-box{flex:1;min-width:0}.search-box input{width:100%}.filters{gap:1px;justify-content:space-between;margin:17px 0}.filter{font-size:12px;padding:7px 11px}.file-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.file-thumb{height:120px}.file-info{padding:10px}.file-name{font-size:12px}.file-meta{font-size:10px}.preview-dialog{width:96vw;max-width:96vw}.preview-header{padding:12px;gap:8px}.preview-header h2{font-size:13px}.preview-header>div:last-child{gap:6px}.preview-header .button{font-size:11px;padding:8px 10px}.preview-body{padding:10px}.preview-note{padding:10px 12px;font-size:11px}footer{font-size:10px;line-height:1.9}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}
.media-preview{width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:15px}.media-preview video{max-height:calc(100% - 60px)}.media-preview>.button{flex-shrink:0}
.card-actions .delete-file{color:#c84949}.card-actions{flex-wrap:wrap}.file-card{content-visibility:auto;contain-intrinsic-size:230px}
.chat-meta{display:flex;align-items:center;justify-content:space-between;gap:20px}.chat-delete{border:0;background:none;color:#b85b64;padding:5px 8px;border-radius:6px;cursor:pointer;font:inherit;font-size:12px}.chat-delete:hover{background:#fff0f0}.chat-delete:focus-visible{outline:2px solid #759eff}.page-loading{min-height:55vh;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:18px;color:#7a8aa2;font-size:14px}.simple-app:not([data-ready=true])>.workspace,.simple-app:not([data-ready=true])>.topbar{display:none}[hidden]{display:none!important}

.chat-section{margin-top:22px;background:#fff;border:1px solid #e5eaf2;border-radius:18px;padding:24px;box-shadow:0 8px 24px #172b4d08}.chat-section .section-heading{margin-bottom:16px}.chat-messages{min-height:100px;max-height:360px;overflow:auto;background:#f7f9fc;border:1px solid #edf1f7;border-radius:14px;padding:12px;display:flex;flex-direction:column;gap:10px}.chat-empty{text-align:center;color:#93a0b4;font-size:13px;padding:26px 12px}.chat-message{align-self:flex-start;max-width:min(720px,88%);background:#fff;border:1px solid #e6ebf3;border-radius:12px;padding:10px 13px;box-shadow:0 3px 10px #172b4d08}.chat-message p{margin:4px 0 0;color:#34445d;font-size:14px;line-height:1.6;white-space:pre-wrap;overflow-wrap:anywhere}.chat-meta{color:#9aa6b8;font-size:11px}.chat-form{display:flex;gap:10px;margin-top:12px}.chat-form input{flex:1;min-width:0;border:1px solid #dfe6f0;border-radius:10px;padding:11px 13px;background:#fafbfd;color:#334155;font:inherit}.chat-form input:focus{outline:3px solid #bfdbfe;border-color:#60a5fa}.chat-form .button{min-width:76px}@media(max-width:650px){.chat-section{padding:16px 14px;border-radius:14px}.chat-form{gap:8px}.chat-form .button{min-width:64px;padding-left:12px;padding-right:12px}.chat-message{max-width:94%}}
.upload-copy{min-width:0}.upload-copy small{display:block;margin-top:6px;color:#9a7b43;font-size:11px}.upload-actions{display:flex;flex-direction:column;gap:8px;margin-left:auto;min-width:132px}.upload-actions .button{width:100%;min-height:42px}.button:disabled{cursor:not-allowed;opacity:.55}@media(max-width:650px){.upload-copy small{font-size:10px;line-height:1.5}.upload-actions{grid-column:1/-1;margin:4px 0 0;width:100%;display:grid;grid-template-columns:1fr 1fr}.upload-actions .button{min-height:44px;padding-left:10px;padding-right:10px}}