:root{--bg:#f5f6f8;--panel:#fff;--line:#e3e5ea;--text:#1d2129;--muted:#86909c;--accent:#3a6df0;--accent-soft:#eaf0ff}*{box-sizing:border-box}html,body{height:100%;color:var(--text);background:var(--bg);margin:0;font-family:system-ui,-apple-system,PingFang SC,Microsoft YaHei,sans-serif}#app{grid-template-columns:minmax(320px,420px) 1fr;height:100vh;display:grid}#chat-pane{background:var(--panel);border-right:1px solid var(--line);flex-direction:column;min-width:0;display:flex}#chat-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;padding:14px 16px;display:flex}#chat-header h1{margin:0;font-size:15px;font-weight:600}#balance{color:var(--muted);font-size:12px}#messages{flex-direction:column;flex:1;gap:12px;padding:16px;display:flex;overflow-y:auto}.msg{white-space:pre-wrap;word-break:break-word;border-radius:12px;max-width:88%;padding:9px 12px;font-size:14px;line-height:1.55}.msg.user{background:var(--accent);color:#fff;border-bottom-right-radius:4px;align-self:flex-end}.msg.ai{background:var(--accent-soft);border-bottom-left-radius:4px;align-self:flex-start}.msg.sys{color:var(--muted);text-align:center;background:0 0;align-self:center;max-width:100%;font-size:12px}.msg.sys.progress{font-variant-numeric:tabular-nums}.msg.official{white-space:normal;background:#f0f7ff;border:1px solid #b8d8ff;align-self:stretch;max-width:100%;font-size:13px}.msg.official .official-head{margin-bottom:4px;font-weight:600}.msg.official code{-webkit-user-select:all;user-select:all;word-break:break-all;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.msg.warn{color:#7a5a00;background:#fffbe6;border:1px solid #ffe58f;border-bottom-left-radius:4px;align-self:flex-start;font-size:13px}.msg.err{color:#b42318;background:#fff1f0;border-bottom-left-radius:4px;align-self:flex-start}#composer{border-top:1px solid var(--line);flex-wrap:wrap;gap:8px;padding:12px;display:flex}#composer-tools{flex:0 0 100%;align-items:center;gap:6px;display:flex}#composer-tools label{color:var(--muted);font-size:12px}#model-select{font:inherit;border:1px solid var(--line);background:var(--panel);max-width:100%;color:var(--text);cursor:pointer;border-radius:6px;padding:4px 6px;font-size:13px}#model-select:focus{border-color:var(--accent);outline:none}#model-select:disabled{opacity:.45;cursor:default}#input{resize:none;font:inherit;border:1px solid var(--line);border-radius:8px;outline:none;flex:1;padding:9px 11px;font-size:14px}#input:focus{border-color:var(--accent)}button{font:inherit;border:1px solid var(--line);background:var(--panel);cursor:pointer;border-radius:8px;padding:8px 14px;font-size:14px}button:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}button:disabled{opacity:.45;cursor:not-allowed}#send{background:var(--accent);color:#fff;border-color:var(--accent);align-self:stretch}#send:hover:not(:disabled){color:#fff;filter:brightness(1.06)}#chat-footer{border-top:1px solid var(--line);gap:8px;padding:12px;display:flex}#chat-footer button{flex:1}#play-pane{flex-direction:column;align-items:center;gap:12px;padding:16px;display:flex;overflow:hidden}#play-frame-wrap{aspect-ratio:720/1280;background:#000;border-radius:14px;flex:auto;max-width:100%;min-height:0;overflow:hidden;box-shadow:0 6px 28px #0000001f}#play-frame{border:0;width:100%;height:100%;display:block}#login-overlay[hidden]{display:none}#login-overlay{z-index:100;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);background:#1418208c;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}#login-card{background:var(--panel);border-radius:14px;width:min(360px,92vw);padding:28px 24px;box-shadow:0 12px 40px #00000040}#login-card h2{margin:0 0 4px;font-size:18px}.login-hint{color:var(--muted);margin:0 0 18px;font-size:13px}#login-sso[hidden],.login-sep[hidden]{display:none}#login-sso{background:var(--accent);color:#fff;text-align:center;border-radius:9px;margin:16px 0 0;padding:11px;font-size:15px;text-decoration:none;display:block}#login-sso:hover{filter:brightness(1.06)}.login-sep{color:var(--muted);align-items:center;gap:10px;margin:18px 0 14px;font-size:12px;display:flex}.login-sep:before,.login-sep:after{content:"";background:var(--line);flex:1;height:1px}#login-card input{width:100%;font:inherit;border:1px solid var(--line);border-radius:9px;outline:none;margin-bottom:12px;padding:11px 12px;font-size:15px}#login-card input:focus{border-color:var(--accent)}#login-action{width:100%;color:var(--accent);border:1px solid var(--accent);background:0 0;padding:11px;font-size:15px}#login-action:hover:not(:disabled){color:var(--accent);background:color-mix(in srgb, var(--accent) 8%, transparent)}#login-msg{text-align:center;min-height:18px;margin-top:12px;font-size:13px}#login-msg.err{color:#b42318}#login-msg.ok{color:var(--muted)}#header-right{align-items:center;gap:14px;display:flex}#header-right .linkbtn{color:var(--accent);cursor:pointer;background:0 0;border:none;padding:0;font-size:13px}#header-right .linkbtn:hover{color:var(--accent);text-decoration:underline}#sessions-overlay[hidden]{display:none}#sessions-overlay{z-index:90;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);background:#14182073;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}#sessions-panel{background:var(--panel);border-radius:14px;flex-direction:column;width:min(460px,92vw);max-height:80vh;display:flex;overflow:hidden;box-shadow:0 12px 40px #00000040}#sessions-head{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;padding:15px 18px;display:flex}#sessions-head h2{margin:0;font-size:16px}#sessions-close{color:var(--muted);cursor:pointer;background:0 0;border:none;padding:4px 8px;font-size:16px}#sessions-close:hover{color:var(--text)}#sessions-list{padding:8px;overflow-y:auto}#sessions-list .session-row{text-align:left;cursor:pointer;background:0 0;border:none;border-radius:8px;flex-direction:column;align-items:flex-start;gap:3px;width:100%;padding:10px 12px;display:flex}#sessions-list .session-row:hover{background:var(--accent-soft);color:inherit}#sessions-list .session-row.current{background:var(--accent-soft)}.session-title{font-size:14px;font-weight:600}.session-meta{color:var(--muted);font-size:12px}.sessions-note{text-align:center;color:var(--muted);padding:24px 16px;font-size:13px}#sprite-panel{background:var(--panel);border:1px solid var(--line);border-radius:10px;flex:none;width:100%;max-width:420px;overflow:hidden}#sprite-toggle{background:var(--panel);border:0;border-radius:0;justify-content:space-between;align-items:center;width:100%;padding:8px 12px;font-size:13px;font-weight:600;display:flex}#sprite-toggle:hover:not(:disabled){color:var(--accent);border-color:#0000}#sprite-body{border-top:1px solid var(--line);max-height:220px;padding:10px 12px 12px;overflow-y:auto}#sprite-grid{grid-template-columns:repeat(auto-fill,minmax(84px,1fr));gap:10px;display:grid}.sprite-cell{flex-direction:column;align-items:center;gap:4px;display:flex}.sprite-thumb{object-fit:contain;background:var(--bg);border:1px solid var(--line);border-radius:8px;width:72px;height:72px}.sprite-cell-label{color:var(--muted);font-size:11px}.sprite-cell-actions{gap:4px;display:flex}.sprite-cell-actions button{border-radius:6px;padding:3px 6px;font-size:11px}.sprite-cell-note{color:#b42318;text-align:center;min-height:14px;font-size:11px}.sprite-note{text-align:center;color:var(--muted);padding:12px;font-size:12px}#sprite-search-overlay[hidden]{display:none}#sprite-search-overlay{z-index:95;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);background:#14182073;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}#sprite-search-panel{background:var(--panel);border-radius:14px;flex-direction:column;width:min(520px,92vw);max-height:80vh;display:flex;overflow:hidden;box-shadow:0 12px 40px #00000040}#sprite-search-head{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;padding:15px 18px;display:flex}#sprite-search-head h2{margin:0;font-size:16px}#sprite-search-close{color:var(--muted);cursor:pointer;background:0 0;border:none;padding:4px 8px;font-size:16px}#sprite-search-close:hover{color:var(--text)}#sprite-search-controls{border-bottom:1px solid var(--line);flex-wrap:wrap;align-items:center;gap:8px;padding:12px 18px;display:flex}#sprite-search-input{min-width:140px;font:inherit;border:1px solid var(--line);border-radius:8px;outline:none;flex:1;padding:7px 10px;font-size:13px}#sprite-search-input:focus{border-color:var(--accent)}#sprite-search-kind{gap:4px;display:flex}.kind-btn{padding:6px 10px;font-size:12px}.kind-btn.active{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}#sprite-search-results{flex:1;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));align-content:start;gap:10px;padding:14px 18px;display:grid;overflow-y:auto}.sprite-result-cell{flex-direction:column;align-items:center;gap:4px;padding:6px;display:flex}.sprite-result-cell img{aspect-ratio:1;object-fit:contain;background:var(--bg);border-radius:6px;width:100%}.sprite-result-theme{color:var(--muted);text-align:center;font-size:10px}#sprite-search-note{color:var(--muted);text-align:center;min-height:16px;padding:8px 18px 14px;font-size:12px}@media (max-width:900px){#app{grid-template-rows:1fr 1fr;grid-template-columns:1fr}#chat-pane{border-right:0;border-bottom:1px solid var(--line)}}