:root{--bg: #ffffff;--bg-panel: #f5f5f5;--bg-hover: #eeeeee;--bg-selected: #e8e8e8;--border: #e0e0e0;--text: #1a1a1a;--text-muted: #6b7280;--text-dim: #9ca3af;--accent: #1a1a1a;--accent-hover: #000000;--accent-contrast: #ffffff;--user-bg: #f5f5f5;--assistant-bg: #ffffff;--tool-bg: #f9fafb;--bg-subtle: rgba(0, 0, 0, .03);--green: #16a34a;--green-border: rgba(34, 197, 94, .25);--green-bg: rgba(34, 197, 94, .04);--red: #dc2626;--red-border: rgba(248, 113, 113, .45);--red-bg: rgba(248, 113, 113, .05);--orange: #d97706;--purple: #7c3aed;--blue: #525252;--font-mono: "JetBrains Mono", "Fira Code", "Consolas", ui-monospace, SFMono-Regular, "PingFang SC", "Microsoft YaHei", monospace;--radius: 8px}html.dark{--bg: #1a1a1a;--bg-panel: #242424;--bg-hover: #2e2e2e;--bg-selected: #383838;--border: #3a3a3a;--text: #e8e8e8;--text-muted: #9ca3af;--text-dim: #6b7280;--accent: #e8e8e8;--accent-hover: #ffffff;--accent-contrast: #1a1a1a;--user-bg: #2e2e2e;--assistant-bg: #1a1a1a;--tool-bg: 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var(--accent);outline-offset:2px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.link{background:none;border:none;color:var(--accent);cursor:pointer;font-size:13px;margin-left:4px;font-family:inherit}.link:hover{text-decoration:underline}.tag{display:inline-block;padding:2px 8px;border-radius:6px;font-size:11px;margin:0 4px 4px 0;background:var(--bg-selected);color:var(--text-muted)}.tag-blue{background:var(--bg-selected);color:var(--blue)}.tag-green{background:var(--green-bg);color:var(--green)}.tag-orange{background:color-mix(in srgb,var(--orange) 10%,var(--bg));color:var(--orange)}.tag-purple{background:var(--bg-selected);color:var(--text)}.app{display:flex;width:100%;height:100dvh;overflow:hidden;background:var(--bg)}.sidebar{background:var(--bg-panel);border-right:1px solid var(--border);display:flex;flex-direction:column;flex-shrink:0;padding:12px 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8px}.chat-thread-inner{max-width:820px;margin:0 auto;display:flex;flex-direction:column}.chat-hint{color:var(--text-dim);font-size:13px;text-align:center;padding:48px 20px;line-height:1.9}.chat-hint b{color:var(--text-muted)}.chat-msg{display:flex;margin-bottom:16px}.chat-msg.user{flex-direction:column;align-items:flex-end}.chat-msg.assistant{flex-direction:column;align-items:stretch}.chat-msg.user .chat-bubble{max-width:85%;background:var(--user-bg);border:1px solid var(--border);border-radius:12px;padding:8px 12px;font-size:14px;line-height:1.6;color:var(--text);word-break:break-word;white-space:pre-wrap}.chat-msg.user .chat-time{text-align:right}.chat-msg.assistant 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0}.chat-input::placeholder{color:var(--text-dim)}.chat-send{flex-shrink:0;align-self:flex-end;display:flex;align-items:center;justify-content:center;width:32px;height:32px;border:none;border-radius:8px;background:var(--bg-panel);color:var(--text-dim);cursor:not-allowed;transition:all .12s}.chat-send.active{background:var(--accent);color:var(--accent-contrast);cursor:pointer}.chat-send.active:hover{background:var(--accent-hover)}.chat-input-hint{text-align:center;font-size:11px;color:var(--text-dim);margin-top:6px}.spin{animation:spin 1s linear infinite;display:inline-flex}@keyframes spin{to{transform:rotate(360deg)}}.markdown-body{min-width:0;max-width:100%;overflow-x:hidden;font-size:14px;line-height:1.7;color:var(--text);word-break:break-word}.markdown-body p{margin:0 0 8px}.markdown-body p:last-child{margin-bottom:0}.markdown-body h1,.markdown-body h2,.markdown-body h3,.markdown-body h4,.markdown-body h5,.markdown-body h6{font-weight:600;margin:10px 0 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img{display:block;max-width:100%;height:auto;margin:8px 0;border-radius:6px}.markdown-inline-code{background:var(--bg-subtle);border-radius:5px;padding:1px 5px;color:var(--text);font-family:var(--font-mono);font-size:.92em;box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--border) 70%,transparent)}.markdown-body blockquote{border-left:3px solid color-mix(in srgb,var(--border) 75%,var(--text-muted));border-radius:0 6px 6px 0;margin:6px 0;padding:6px 11px;background:var(--bg-subtle);color:var(--text-muted)}.markdown-body hr{border:none;height:1px;margin:12px 0;background:linear-gradient(90deg,transparent,var(--border),transparent)}.markdown-table-wrap{width:100%;margin:8px 0;overflow-x:auto;overflow-y:hidden;border:1px solid var(--border);border-radius:7px}.markdown-body table{border-collapse:separate;border-spacing:0;min-width:100%;font-size:13px}.markdown-body th,.markdown-body td{border:0;border-bottom:1px solid var(--border);padding:6px 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