#tiai-chat{width:420px;max-width:100%;height:640px;display:flex;flex-direction:column;background:#fff;border:1px solid #dbe6ed;border-radius:22px;overflow:hidden;box-shadow:0 18px 50px rgba(16,52,74,.16);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;color:#17324d}
#tiai-header{min-height:78px;padding:14px 18px;display:flex;align-items:center;justify-content:space-between;background:linear-gradient(135deg,#0b3b66,#12678a);color:#fff;box-sizing:border-box}
.tiai-brand{display:flex;align-items:center;gap:11px}.tiai-avatar{width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:14px;background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.2);font-size:21px}.tiai-brand-text strong{display:block;font-size:16px;font-weight:800}.tiai-brand-text span{display:block;margin-top:3px;font-size:12px;opacity:.82}.tiai-online{display:flex;align-items:center;gap:6px;padding:6px 9px;border-radius:20px;background:rgba(255,255,255,.1);font-size:11px}.tiai-online span{width:7px;height:7px;border-radius:50%;background:#52d273;display:inline-block}
#tiai-messages{flex:1;overflow-y:auto;padding:20px 15px 12px;background:linear-gradient(180deg,#f8fbfd,#f0f5f8);scroll-behavior:smooth}#tiai-messages::-webkit-scrollbar{width:7px}#tiai-messages::-webkit-scrollbar-thumb{background:#cbd8e1;border-radius:10px}
.tiai-message{max-width:88%;margin-bottom:13px;padding:12px 14px;border-radius:17px;font-size:14px;line-height:1.55;word-break:break-word;animation:tiaiMessageIn .22s ease}@keyframes tiaiMessageIn{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:translateY(0)}}
.tiai-message.ai{margin-right:auto;background:#fff;color:#274458;border:1px solid #e1e9ef;border-bottom-left-radius:6px;box-shadow:0 4px 12px rgba(20,59,82,.05)}.tiai-message.ai strong{color:#0b3b66;font-weight:800}.tiai-message.user{margin-left:auto;background:linear-gradient(135deg,#0b3b66,#12678a);color:#fff;border-bottom-right-radius:6px;box-shadow:0 5px 15px rgba(11,59,102,.17)}.tiai-bullet{color:#0c7c91;font-weight:900}
#tiai-upload-area.tiai-upload-hidden{display:none}#tiai-upload-area{padding:10px 12px 0;background:#fff;border-top:1px solid #e3ebf0}.tiai-upload-button{width:100%;min-height:50px;border:1px dashed #b8cdd9;border-radius:14px;background:#f7fbfd;color:#0b3b66;display:flex;align-items:center;justify-content:flex-start;gap:10px;padding:8px 12px;cursor:pointer;text-align:left;transition:.2s}.tiai-upload-button:hover{border-color:#117992;background:#f1f9fb}.tiai-upload-button:focus{outline:3px solid rgba(17,121,146,.14);outline-offset:2px}.tiai-upload-button:disabled{opacity:.55;cursor:not-allowed}.tiai-upload-icon{font-size:19px}.tiai-upload-text{display:flex;flex-direction:column;gap:2px}.tiai-upload-text strong{font-size:12px;font-weight:800}.tiai-upload-text small{font-size:10px;color:#708593}.tiai-upload-item{display:flex;align-items:center;gap:9px;margin-top:7px;padding:9px 10px;border:1px solid #e4edf1;border-radius:11px;background:#fff}.tiai-upload-file-icon{font-size:18px;flex:0 0 auto}.tiai-upload-file-info{min-width:0;flex:1}.tiai-upload-file-info strong{display:block;font-size:11px;color:#173f5a;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.tiai-upload-file-info span{display:block;margin-top:2px;color:#778995;font-size:10px}.tiai-upload-remove{width:25px;height:25px;border:0;border-radius:50%;background:#eef3f6;color:#6d7d88;font-size:18px;line-height:22px;cursor:pointer}.tiai-upload-remove:hover{background:#e7eef2;color:#0b3b66}.tiai-upload-progress{opacity:.8}.tiai-upload-mini-spinner{width:13px;height:13px;border:2px solid #cbdde4;border-top-color:#117992;border-radius:50%;animation:tiaiSpin .8s linear infinite}
#tiai-input-area{display:flex;gap:9px;padding:10px 12px 8px;background:#fff}.tiai-footer-note{padding:7px 12px 9px;text-align:center;background:#fff;color:#82919e;font-size:10px;border-top:1px solid #edf2f5}#tiai-input{flex:1;min-width:0;height:48px;border:1px solid #d5e0e8;border-radius:14px;padding:0 15px;outline:none;background:#f9fbfd;color:#17324d;font-size:14px}#tiai-input:focus{background:#fff;border-color:#117992;box-shadow:0 0 0 3px rgba(17,121,146,.08)}#tiai-input::placeholder{color:#8898a6}
#tiai-send{min-width:82px;height:48px;border:0;border-radius:14px;background:linear-gradient(135deg,#0b3b66,#117992);color:#fff;font-size:14px;font-weight:800;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:7px;box-shadow:0 7px 17px rgba(11,59,102,.16);transition:.2s}#tiai-send:hover{transform:translateY(-1px)}#tiai-send:disabled{opacity:.65;cursor:not-allowed}.tiai-send-icon{font-size:12px}.tiai-spinner{width:15px;height:15px;border:2px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;animation:tiaiSpin .8s linear infinite}@keyframes tiaiSpin{to{transform:rotate(360deg)}}
.tiai-typing-label{color:#718595;font-size:12px}.tiai-dots{display:inline-flex;gap:4px;margin-left:7px}.tiai-dots span{width:5px;height:5px;border-radius:50%;background:#117992;animation:tiaiTyping 1.1s infinite ease-in-out}.tiai-dots span:nth-child(2){animation-delay:.15s}.tiai-dots span:nth-child(3){animation-delay:.3s}@keyframes tiaiTyping{0%,60%,100%{transform:translateY(0);opacity:.35}30%{transform:translateY(-4px);opacity:1}}
.tiai-summary-box{margin:10px 0 16px;border:1px solid #d5e7ec;border-radius:19px;overflow:hidden;background:#fff;box-shadow:0 11px 28px rgba(13,69,88,.1);animation:tiaiSummaryIn .35s ease}@keyframes tiaiSummaryIn{from{opacity:0;transform:translateY(10px) scale(.985)}to{opacity:1;transform:translateY(0) scale(1)}}.tiai-summary-top{display:flex;align-items:center;gap:11px;padding:16px;color:#fff;background:linear-gradient(135deg,#0b3b66,#117992)}.tiai-summary-check{width:38px;height:38px;flex:0 0 38px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.2);font-size:18px;font-weight:900}.tiai-summary-title{font-size:15px;font-weight:800}.tiai-summary-subtitle{margin-top:4px;font-size:11px;opacity:.82}.tiai-summary-heading{padding:14px 15px 8px;font-size:13px;font-weight:800;color:#0b3b66}.tiai-summary-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:8px 12px 14px}.tiai-summary-item{min-width:0;padding:10px;background:#f7fbfd;border:1px solid #e6eef2;border-radius:11px}.tiai-summary-label{display:block;margin-bottom:4px;color:#758796;font-size:10px}.tiai-summary-value{display:block;color:#19415f;font-size:12px;font-weight:800;word-break:break-word}.tiai-summary-divider{height:1px;background:#e8eef2}
.tiai-summary-documents{padding-bottom:12px}.tiai-summary-document{margin:0 12px 7px;padding:9px 10px;background:#f7fbfd;border:1px solid #e5edf1;border-radius:10px}.tiai-summary-document-name{font-size:11px;font-weight:800;color:#19415f;word-break:break-word}.tiai-summary-document-meta{margin-top:3px;font-size:10px;color:#748794}.tiai-summary-total-words{margin:8px 12px 0;padding:9px 10px;border-radius:10px;background:#e9f5f7;color:#0b5b70;font-size:11px}.tiai-summary-no-document{margin:0 12px;padding:9px 10px;color:#778995;background:#f7fafb;border:1px dashed #dbe7ec;border-radius:10px;font-size:10px}.tiai-summary-closing{display:flex;gap:10px;padding:14px;background:linear-gradient(180deg,#fff,#f4fafb)}.tiai-summary-closing-icon{width:34px;height:34px;flex:0 0 34px;display:flex;align-items:center;justify-content:center;background:#e7f4f7;border-radius:10px;font-size:16px}.tiai-summary-closing strong{display:block;color:#0b3b66;font-size:12px;line-height:1.4}.tiai-summary-closing p{margin:4px 0 5px;color:#607482;font-size:11px;line-height:1.5}.tiai-summary-thanks{color:#117992;font-size:11px;font-weight:800}
@media(max-width:480px){#tiai-chat{width:100%;height:600px;border-radius:18px}.tiai-summary-grid{grid-template-columns:1fr}.tiai-message{max-width:91%;font-size:13px}}