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(max-width:860px){.know-layout{grid-template-columns:minmax(0,1fr);gap:0}.kwnav{position:static;max-height:none;margin-bottom:24px}}.know-index-main{min-width:0}.kw-result{font-size:14px;color:#5A6478;margin:0 0 18px}.kw-result b{color:#1A2233}.kw-back{margin-left:14px;color:#002FA7;font-size:13px;text-decoration:none}.kw-back:hover{text-decoration:underline}.kw-empty{text-align:center;padding:60px 20px;color:#5A6478}.kw-empty p{margin:0 0 10px}.kw-empty-tip{font-size:13px;color:#9aa7bd}.kw-empty .btn{margin-top:14px}