:root{--color-primary: #1890ff;--color-primary-hover: #40a9ff;--color-primary-bg: #e6f7ff;--color-primary-bg-hover: #bae7ff;--color-primary-border: #91d5ff;--color-success: #52c41a;--color-success-bg: #f6ffed;--color-success-border: #b7eb8f;--color-success-bg-hover: #d9f7be;--color-warning: #faad14;--color-warning-bg: #fffbe6;--color-warning-border: #ffe58f;--color-danger: #ff4d4f;--color-danger-bg: #fff2f0;--color-danger-border: #ffccc7;--color-text: #333;--color-text-secondary: #999;--color-text-muted: #ccc;--color-text-placeholder: #bfbfbf;--color-text-tertiary: #666;--color-text-visitor-id: #bbb;--color-border: #e8e8e8;--color-border-light: #f0f0f0;--color-input-border: #e0e0e0;--color-bg: #f5f5f5;--color-bg-white: #fff;--color-bg-light: #fafafa;--color-ai-bg: #f0f5ff;--color-ai-border: #d6e4ff;--color-ai-msg-border: #b7cef0;--color-ai-text: #2b3a67;--color-ai-label: #6b7db3;--color-ai-badge-text: #597ef7;--color-ai-suggest-bg: #f8f9ff;--color-ai-suggest-hover: #e6f0ff;--color-ai-revoke-bg: #fff7e6;--color-ai-revoke-border: #ffd591;--color-ai-revoke-text: #d48806;--color-ai-revoke-hover: #ffe7ba;--space-xs: 2px;--space-sm: 4px;--space-md: 8px;--space-lg: 12px;--space-xl: 16px;--space-xxl: 20px;--space-xxxl: 24px;--radius-sm: 2px;--radius-md: 4px;--radius-lg: 6px;--radius-xl: 8px;--radius-xxl: 10px;--radius-round: 50%;--font-xs: 10px;--font-sm: 11px;--font-md: 12px;--font-lg: 13px;--font-xl: 14px;--font-xxl: 15px;--font-title: 16px;--font-subtitle: 18px;--font-emoji: 22px;--font-icon-sm: 28px;--font-icon-lg: 48px;--sidebar-width: 280px;--visitor-info-width: 220px;--chat-header-height: auto;--input-area-min-height: auto;--btn-height-sm: 32px;--btn-height-md: 36px;--btn-height-lg: 42px;--avatar-size: 36px;--tab-height: auto;--msg-img-max-size: 200px;--modal-width: 360px;--shadow-msg: 0 1px 2px rgba(0, 0, 0, .06);--shadow-drawer: 0 4px 12px rgba(0, 0, 0, .12);--shadow-preview: 0 4px 24px rgba(0, 0, 0, .5);--overlay-bg: rgba(0, 0, 0, .3);--overlay-close-bg: rgba(255, 255, 255, .9);--transition-fast: .1s;--transition-normal: .15s;--transition-slow: .3s;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-family-mono: monospace;--tap-min-size: 44px;--safe-area-bottom: env(safe-area-inset-bottom, 0px);--safe-area-top: env(safe-area-inset-top, 0px)}.hide-mobile,.hide-tablet,.hide-desktop{display:none}@media (max-width: 767px){.hide-mobile{display:none!important}.show-mobile{display:revert}}@media (min-width: 768px) and (max-width: 1023px){.hide-tablet{display:none!important}.show-tablet{display:revert}}@media (min-width: 1024px){.hide-desktop{display:none!important}.show-desktop{display:revert}}.safe-top{padding-top:env(safe-area-inset-top,0px)}.safe-bottom{padding-bottom:env(safe-area-inset-bottom,0px)}html.touch-device .touch-active:active{opacity:.7;transition:opacity .1s}@media (max-width: 767px){.tap-target{min-width:44px;min-height:44px}}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html,body{font-family:var(--font-family);font-size:var(--font-xl);color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:inherit;text-decoration:none}input,textarea,button{font-family:inherit}