.deepseek-shell{height:calc(100vh - 126px);min-height:680px;display:grid;grid-template-columns:248px minmax(0,1fr);background:#fff;border:1px solid #e9ebef;border-radius:14px;overflow:visible;box-shadow:0 8px 30px #18213a0a;margin-bottom:24px}
.chat-history-sidebar{position:static;width:auto;background:#f7f8fa;border-right:1px solid #e7e9ee;padding:18px 12px 12px;display:flex;flex-direction:column;min-height:0}
.ds-wordmark{display:flex;align-items:center;gap:8px;color:#315efb;padding:0 6px 22px}.ds-wordmark>span{font-size:26px;transform:rotate(-20deg)}.ds-wordmark strong{font-size:22px;letter-spacing:.3px}.ds-wordmark i{margin-left:auto;color:#5f6774;font-size:22px;font-style:normal}
.new-chat-button{width:100%;padding:11px;background:#fff;color:#202733;border:1px solid #e0e3e8;border-radius:24px;box-shadow:0 2px 6px #17201b0a;font-weight:500}
.history-list{flex:1;overflow:auto;margin-top:13px}.history-group{font-size:12px;color:#9298a3;padding:13px 9px 5px}.history-item{display:block;padding:8px 10px;border-radius:8px;color:#252b35;text-decoration:none;margin:1px 0}.history-item:hover,.history-item.active{background:#e3eaff;color:#315efb}.history-item span{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.history-item small{display:none}.no-history{padding:24px 8px;text-align:center;color:#999;font-size:12px}
.sidebar-account{display:flex;align-items:center;gap:9px;padding:10px 5px 1px;border-top:1px solid #e5e7eb}.sidebar-account>span{width:31px;height:31px;border-radius:50%;display:grid;place-items:center;background:#eceff3}.sidebar-account div{flex:1}.sidebar-account strong,.sidebar-account small{display:block}.sidebar-account strong{font-size:12px}.sidebar-account small{font-size:10px;color:#9298a3}
.chat-workspace{min-width:0;display:flex;flex-direction:column}.chat-topbar{height:66px;padding:0 20px;display:flex;align-items:center;justify-content:space-between}.chat-topbar strong,.chat-topbar span{display:block}.chat-topbar strong{font-size:14px;font-weight:500}.chat-topbar span{font-size:11px;color:#315efb;margin-top:2px}.topbar-action{background:transparent;color:#767e89;padding:7px 10px}.topbar-action:hover{background:#f3f4f6}
.vision-notice{display:flex;justify-content:center;gap:10px;background:#fff8e8;color:#725917;padding:7px 14px;font-size:12px}.vision-notice a{color:#315efb;font-weight:600}
.chat-stage{position:relative;flex:1;min-height:0;display:flex;flex-direction:column;background:#fff}.chat-stage.is-empty{justify-content:center}
.deepseek-welcome{text-align:center;margin:auto auto 20px;padding:20px}.welcome-title{display:flex;justify-content:center;align-items:center;gap:10px}.ds-whale{color:#315efb;font-size:30px;transform:rotate(-20deg)}.welcome-title h2{font-size:23px;margin:0}.deepseek-welcome p{color:#858c97;margin:10px 0 0}
.chat-messages{flex:1;min-height:0;overflow:auto;padding:16px max(24px,calc((100% - 760px)/2)) 170px;scroll-behavior:smooth}.chat-stage.is-empty .chat-messages{display:none}
.chat-message{width:100%;margin:0 auto 34px}.chat-message.user{display:flex;justify-content:flex-end}.user-message-label{display:none}.chat-message.user .chat-bubble{max-width:72%;background:#f1f4f9;border-radius:16px 4px 16px 16px;padding:11px 16px}.chat-message.assistant .chat-bubble{max-width:100%;padding:0;background:transparent}
.assistant-heading{display:flex;align-items:center;gap:7px;margin-bottom:12px}.assistant-heading>span{color:#315efb;font-size:20px;transform:rotate(-20deg)}.assistant-heading strong{font-size:15px}.assistant-heading small{color:#9aa1ab;font-size:10px}
.chat-content{font-size:15px;line-height:1.85;color:#20242b;word-break:break-word}.chat-message.assistant .chat-content{padding-bottom:14px;border-bottom:1px solid #eceef1}.chat-content code{background:#f1f2f4;border-radius:5px;padding:2px 5px}.chat-image{display:block;max-width:360px;max-height:270px;border-radius:10px;margin:0 0 12px auto}.vision-result{margin:12px 0;background:#f6f8fb;border-radius:9px;padding:9px 11px}.vision-result summary{cursor:pointer;color:#315efb;font-weight:600}.vision-result p{margin:7px 0 0}
.message-actions{display:flex;gap:5px;margin-top:10px}.message-actions button{background:transparent;color:#7f8792;border:0;padding:5px 7px;font-size:16px}.message-actions button:hover{background:#f1f3f6}.ai-disclaimer{display:block;color:#a0a5ae;font-size:11px;margin-top:5px}
.chat-composer{position:absolute;z-index:5;left:50%;bottom:12px;transform:translateX(-50%);width:min(776px,calc(100% - 44px));margin:0}.chat-stage.is-empty .chat-composer{bottom:calc(50% - 145px)}
.chat-input-shell{box-sizing:border-box;min-height:124px;padding-bottom:52px;border:1px solid #dfe2e7;border-radius:20px;background:#fff;box-shadow:0 9px 30px #1f2c4812;position:relative;transition:.18s;overflow:hidden}.chat-input-shell.has-attachments{min-height:208px}.chat-input-shell:focus-within{border-color:#a9bdff;box-shadow:0 10px 34px #315efb17}.chat-input-shell.dragging{border-color:#315efb;background:#f7f9ff}
.chat-composer textarea{box-sizing:border-box;width:100%;height:66px;max-height:180px;border:0;outline:0;resize:none;background:transparent;padding:15px 17px 8px;font:15px/1.55 inherit;color:#20242b}.chat-composer textarea::placeholder{color:#a7adb7}
.composer-bottom{position:absolute;left:12px;right:12px;bottom:10px;display:flex;align-items:center;justify-content:space-between}.composer-modes,.composer-actions{display:flex;align-items:center;gap:7px}.composer-modes input{position:absolute;opacity:0;pointer-events:none}.composer-modes label{margin:0;border:1px solid #dfe3ea;color:#5f6773;border-radius:17px;padding:5px 10px;font-size:12px;cursor:pointer}.composer-modes input:checked+label{border-color:#aac0ff;background:#f1f5ff;color:#315efb}
.composer-tool{width:31px;height:31px;margin:0;display:grid;place-items:center;border-radius:50%;cursor:pointer;color:#202833}.composer-tool svg{width:21px;height:21px;display:block;fill:currentColor}.composer-tool:hover{background:#f2f3f5}#send-chat-button{width:36px;height:36px;border-radius:50%;padding:0;background:#dbe4ff;color:#fff;font-size:22px;line-height:1;display:grid;place-items:center;transition:.18s}#send-chat-button.is-ready{background:#315efb;box-shadow:0 4px 12px #315efb35}#send-chat-button.is-sending{background:#315efb}#send-chat-button .send-stop{display:none;width:10px;height:10px;border-radius:2px;background:#fff}#send-chat-button.is-sending .send-arrow{display:none}#send-chat-button.is-sending .send-stop{display:block}#send-chat-button[disabled]{cursor:wait}
.composer-hint{text-align:center;color:#a0a6b0;font-size:10px;margin-top:6px}.composer-hint span{color:#667083}.image-preview{display:flex;align-items:center;gap:10px;background:#f5f7fb;border-radius:10px;padding:8px;margin:8px 0}.image-preview img{width:52px;height:52px;border-radius:7px;object-fit:cover}.image-preview div{flex:1}.image-preview strong,.image-preview span{display:block}.image-preview span{color:#9298a3;font-size:11px}
.image-preview[hidden]{display:none!important}
.attachment-preview-list{display:flex;gap:8px;padding:10px 12px 0;overflow-x:auto}.attachment-preview-list[hidden]{display:none!important}.attachment-preview-card,.message-attachment{display:flex;align-items:center;gap:8px;min-width:150px;max-width:220px;background:#f5f7fb;border:1px solid #e4e7ec;border-radius:10px;padding:7px}.attachment-preview-card img,.message-attachment img{width:42px;height:42px;border-radius:7px;object-fit:cover}.attachment-preview-card .file-icon,.message-attachment .file-icon{width:42px;height:42px;border-radius:7px;display:grid;place-items:center;background:#e9efff;color:#315efb;font-size:21px}.attachment-preview-card>div,.message-attachment>div{min-width:0;flex:1}.attachment-preview-card strong,.attachment-preview-card small,.message-attachment strong,.message-attachment small{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.attachment-preview-card strong,.message-attachment strong{font-size:11px}.attachment-preview-card small,.message-attachment small{font-size:9px;color:#9298a3}.attachment-preview-card>button{background:transparent;color:#7b8490;padding:3px;font-size:17px}.message-attachments{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}.composer-tool{font-family:"Segoe UI Emoji","Segoe UI Symbol",sans-serif;font-weight:400;transform:none}.history-row:has(.history-more[open]){z-index:50}.history-more[open]{z-index:60}.history-menu{z-index:100}
.proposal-panel{margin-top:0}.proposal-panel h2{margin-bottom:18px}.model-registry{display:flex;align-items:center;gap:9px;flex-wrap:wrap;margin:14px 0 20px;padding:13px 15px;border-radius:10px;background:#f3f6ff}.model-registry span{color:#315efb;background:#fff;border:1px solid #cfdafe;border-radius:16px;padding:4px 9px;font-size:12px}.model-registry small{flex-basis:100%;max-width:none}
@media(max-width:1000px){.deepseek-shell{grid-template-columns:190px 1fr}.chat-composer{width:calc(100% - 30px)}.composer-modes label{padding:5px 7px}}
@media(max-width:760px){.deepseek-shell{height:720px;grid-template-columns:1fr}.chat-history-sidebar{display:none}.chat-topbar{padding:0 12px}.chat-messages{padding:14px 14px 165px}.chat-message.user .chat-bubble{max-width:88%}.composer-modes label{font-size:0;padding:7px}.composer-modes label:first-letter{font-size:13px}.chat-composer{width:calc(100% - 20px)}.deepseek-welcome{padding:15px}.welcome-title h2{font-size:19px}.vision-notice{flex-wrap:wrap}.chat-image{max-width:100%}}
.history-row{position:relative;display:flex;align-items:center;border-radius:8px;margin:1px 0}.history-row:hover,.history-row.active{background:#e3eaff}.history-row .history-item{min-width:0;flex:1;margin:0;padding:8px 7px 8px 10px}.history-row.active .history-item{color:#315efb}.history-more{position:relative;flex:0 0 31px}.history-more summary{list-style:none;cursor:pointer;text-align:center;color:#737b88;padding:7px 2px}.history-more summary::-webkit-details-marker{display:none}.history-menu{position:absolute;z-index:30;left:0;top:30px;width:126px;padding:6px;background:#fff;border:1px solid #e1e4e9;border-radius:12px;box-shadow:0 12px 30px #202a401f}.history-menu button{display:block;width:100%;text-align:left;background:transparent;color:#252b35;padding:8px 9px;font-size:13px}.history-menu button:hover{background:#f3f5f8}.history-menu .menu-danger{color:#ef4444}.chat-message.assistant .chat-bubble{padding-bottom:8px;border-bottom:1px solid #e8eaee}
.history-list{overflow-y:auto!important;overflow-x:hidden!important;scrollbar-gutter:stable}.history-more[open] .history-menu{position:fixed!important;z-index:99999!important;left:0;top:0}.attachment-preview-head{display:flex;align-items:center;justify-content:space-between;padding:8px 14px 0;color:#747d89;font-size:11px}.attachment-preview-head[hidden]{display:none!important}.attachment-preview-head button{background:transparent;color:#315efb;padding:2px 5px;font-size:11px}
.chat-modal{position:fixed;z-index:120000;inset:0;background:#11182755;display:grid;place-items:center;padding:20px}.chat-modal[hidden]{display:none!important}.chat-modal-card{width:min(420px,calc(100vw - 40px));background:#fff;border-radius:16px;padding:18px;box-shadow:0 24px 70px #11182738}.chat-modal-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.chat-modal-title strong{font-size:17px}.chat-modal-title button{background:transparent;color:#69717d;font-size:22px;padding:2px 6px}.chat-modal-card label{display:block}.chat-modal-card input[name=title]{width:100%;box-sizing:border-box;margin-top:7px}.chat-modal-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:18px}
.attachment-context-note{margin:-3px 0 12px;color:#6b7280;font-size:11px}.attachment-preview-list{max-height:76px;padding-top:6px}.attachment-preview-head{height:25px}.chat-input-shell.has-attachments textarea{height:52px;padding-top:7px}
.composer-modes label{border-radius:18px!important;padding:4px 10px!important;display:flex!important;align-items:center;gap:5px;font-size:12px!important}.composer-modes label span{white-space:nowrap}.composer-modes label small{display:inline-block;font-size:9px;color:#9299a5;border-left:1px solid #dfe3ea;padding-left:5px}.composer-modes input:checked+label small{color:#315efb;border-color:#b9c9f8}