#ai-widget * { box-sizing: border-box; }
#ai-overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); z-index: 9998; justify-content: center; align-items: center; }
#ai-box { background: #fff; border-radius: 16px; width: 420px; max-height: 90vh; overflow-y: auto; box-shadow: 0 20px 60px rgba(0,0,0,0.3); font-family: 'Microsoft YaHei', sans-serif; }
.ai-hdr { background: linear-gradient(135deg, #8B0000, #CC0000); color: #fff; padding: 16px 20px; display: flex; justify-content: space-between; align-items: center; border-radius: 16px 16px 0 0; }
.ai-hdr .ai-cls { background: none; border: none; color: #fff; font-size: 24px; cursor: pointer; }
#ai-msg { max-height: 300px; overflow-y: auto; padding: 16px; }
.ai-msg { margin-bottom: 10px; padding: 10px 14px; border-radius: 12px; font-size: 14px; line-height: 1.5; white-space: pre-wrap; }
.ai-msg-a { background: #fff3cd; color: #333; }
.ai-msg-u { background: #f0f0f0; color: #333; margin-left: 40px; }
#ai-opts { padding: 0 16px 16px; display: flex; flex-wrap: wrap; gap: 8px; }
.ai-btn { padding: 8px 16px; background: linear-gradient(135deg, #FFD700, #FFA500); color: #8B0000; border: none; border-radius: 20px; font-size: 13px; cursor: pointer; font-weight: bold; }
#ai-ia { display: none; padding: 0 16px 16px; }
#ai-ia input { width: 100%; padding: 10px; border: 1px solid #ddd; border-radius: 8px; font-size: 14px; margin-bottom: 8px; }
#ai-ia button { width: 100%; padding: 10px; background: #8B0000; color: #fff; border: none; border-radius: 8px; font-size: 14px; cursor: pointer; }
.ai-ftr { text-align: center; font-size: 11px; color: #999; padding: 10px; border-top: 1px solid #eee; }
#ai-float { position: fixed; bottom: 24px; right: 24px; width: 60px; height: 60px; background: linear-gradient(135deg, #8B0000, #CC0000); border-radius: 50%; display: flex; justify-content: center; align-items: center; font-size: 28px; cursor: pointer; box-shadow: 0 4px 20px rgba(139,0,0,0.4); z-index: 9997; }