:root{--da-primary: #6366f1;--da-primary-hover: #4f46e5;--da-bg: #ffffff;--da-bg-secondary: #f9fafb;--da-text: #111827;--da-text-secondary: #6b7280;--da-border: #e5e7eb;--da-hover: #f3f4f6;--da-user-bg: #6366f1;--da-user-text: #ffffff;--da-assistant-bg: #f3f4f6;--da-assistant-text: #111827;--da-error-bg: #fef2f2;--da-error-text: #dc2626;--da-shadow: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--da-shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1)}@media (prefers-color-scheme: dark){:root{--da-bg: #1f2937;--da-bg-secondary: #111827;--da-text: #f9fafb;--da-text-secondary: #9ca3af;--da-border: #374151;--da-hover: #374151;--da-assistant-bg: #374151;--da-assistant-text: #f9fafb;--da-error-bg: #450a0a;--da-error-text: #fca5a5}}.da-widget{position:fixed;z-index:9999;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:14px;line-height:1.5}.da-bottom-right{bottom:20px;right:20px}.da-bottom-left{bottom:20px;left:20px}.da-fab{width:56px;height:56px;border-radius:50%;background:var(--da-primary);color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:var(--da-shadow-lg);transition:transform .2s,background-color .2s}.da-fab:hover{background:var(--da-primary-hover);transform:scale(1.05)}.da-panel{width:380px;height:520px;background:var(--da-bg);border-radius:12px;box-shadow:var(--da-shadow-lg);display:flex;flex-direction:column;overflow:hidden;border:1px solid var(--da-border)}@media (max-width: 480px){.da-panel{width:calc(100vw - 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