.ai-info-btn{display:inline-flex;align-items:center;justify-content:center;width:16px;height:16px;margin-left:6px;color:#9ca3af;cursor:pointer;vertical-align:middle;transition:color .15s ease;flex-shrink:0;border:none;background:none;padding:0;line-height:0;position:relative;touch-action:manipulation;-webkit-tap-highlight-color:transparent}
.ai-info-btn::before{content:"";position:absolute;inset:-8px;}
.ai-info-btn:hover{color:#3b82f6}
.ai-info-btn:active{color:#3b82f6}
.ai-info-btn svg{width:16px;height:16px;display:block;pointer-events:none}
#aiInfoTooltip{position:fixed;z-index:99999;max-width:280px;padding:10px 12px;background:#fff;color:#1f2937;font-size:13px;line-height:1.45;border:1px solid #e5e7eb;border-radius:8px;box-shadow:0 6px 24px rgba(0,0,0,.12);pointer-events:none;opacity:0;transform:translateY(4px);transition:opacity .12s ease,transform .12s ease;display:none}
#aiInfoTooltip.show{opacity:1;transform:translateY(0);display:block}
#aiInfoTooltip::after{content:"";position:absolute;left:var(--arrow-x,50%);bottom:-6px;width:10px;height:10px;background:#fff;border-right:1px solid #e5e7eb;border-bottom:1px solid #e5e7eb;transform:translateX(-50%) rotate(45deg)}
#aiInfoTooltip.below::after{bottom:auto;top:-6px;border:none;border-left:1px solid #e5e7eb;border-top:1px solid #e5e7eb}