*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
.fkSelectorBody{min-width:320px;background:#fff;color:#1d1d1d;font-family:"Microsoft YaHei","微软雅黑",Arial,sans-serif;}
.fkSelector{background:#fff;}
.fkSelector a{color:inherit;text-decoration:none;}
.fkSelector__brand{height:160px;background:#fff;}
.fkSelector__brandInner{width:1200px;max-width:calc(100% - 48px);height:100%;margin:0 auto;padding-top:64px;}
.fkSelector__brand img{display:block;width:169px;height:40px;object-fit:contain;}
.fkSelector__hero{height:260px;background:#bf0903;color:#fff;}
.fkSelector__heroInner{width:1200px;max-width:calc(100% - 48px);margin:0 auto;padding-top:52px;}
.fkSelector__hero h1{margin:0;color:#fff;font-size:36px;font-weight:700;line-height:1.35;letter-spacing:1px;}
.fkSelector__hero p{max-width:1200px;margin:34px 0 0;color:#fff;font-size:18px;font-weight:400;line-height:28px;letter-spacing:1px;}
.fkSelector__form{width:1200px;max-width:calc(100% - 48px);margin:99px auto 0;}
.fkSelector__section{margin:0;padding:0;border:0;}
.fkSelector__sectionTitle{
	display: flex;
    align-items: center;
    width: 100%;
    box-sizing: content-box;
    height: 60px;
    margin-left: -16px;
    padding: 0 16px;
    background: #bf0903;
    color: #fff;
    font-size: 36px;
    font-weight: 700;
    line-height: 60px;
    letter-spacing: 1px;
}
.fkSelector__label{display:flex;align-items:center;min-height:24px;margin-bottom:10px;color:#1d1d1d;font-size:18px;font-weight:400;line-height:24px;letter-spacing:1px;white-space:nowrap;}
.fkSelector__help{display:inline-flex;align-items:center;justify-content:center;flex:0 0 17px;width:17px;height:17px;margin-left:10px;padding:0;border:0;border-radius:50%;background:#8e8e8e;color:#fff;font:700 12px/17px Arial,sans-serif;cursor:pointer;-webkit-appearance:none;appearance:none;}
.fkSelector__help:hover,.fkSelector__help:focus{background:#6f6f6f;outline:0;}
.fkSelector__help:focus-visible{box-shadow:0 0 0 2px #fff,0 0 0 4px #bf0903;}
.fkSelectorHelpModal{position:fixed;inset:0;z-index:1200;display:none;align-items:center;justify-content:center;padding:24px;}
.fkSelectorHelpModal.is-open{display:flex;}
.fkSelectorHelpModal__backdrop{position:absolute;inset:0;background:rgba(0,0,0,.45);}
.fkSelectorHelpModal__dialog{position:relative;z-index:1;width:min(880px,100%);max-height:min(82vh,760px);overflow:auto;padding:28px 36px 32px;background:#fff;box-shadow:0 12px 40px rgba(0,0,0,.22);}
.fkSelectorHelpModal__close{position:absolute;top:12px;right:12px;width:36px;height:36px;padding:0;border:0;background:transparent;color:#666;font:400 28px/36px Arial,sans-serif;cursor:pointer;}
.fkSelectorHelpModal__close:hover,.fkSelectorHelpModal__close:focus{color:#bf0903;outline:0;}
.fkSelectorHelpModal__title{margin:0 28px 16px 0;color:#1d1d1d;font-size:22px;font-weight:700;line-height:1.4;letter-spacing:1px;}
.fkSelectorHelpModal__body{color:#1d1d1d;font-size:16px;font-weight:400;line-height:1.7;letter-spacing:.5px;}
.fkSelectorHelpModal__body p{margin:0 0 12px;}
.fkSelectorHelpModal__body p:last-child{margin-bottom:0;}
.fkSelectorHelpModal__body ul{margin:0 0 12px;padding-left:1.4em;}
.fkSelectorHelpModal__body li{margin:0 0 8px;}
.fkSelectorHelpModal__body img{display:block;width:100%;max-width:100%;height:auto;margin:16px 0 0;background:#fff;}
.fkSelector__basicGrid{display:grid;grid-template-columns:259px 226px 251px 197px;gap:89px;margin-top:34px;min-height:234px;}
.fkSelector__field{min-width:0;}
.fkSelector__field input[type="radio"]{position:absolute;width:1px;height:1px;overflow:hidden;opacity:0;pointer-events:none;}
.fkSelector__choiceStack{display:flex;flex-direction:column;align-items:flex-start;gap:10px;}
.fkSelector__choice{display:flex;align-items:center;justify-content:center;gap:12px;width:154px;height:50px;border:1px solid #8e8e8e;background:#fff;color:#8e8e8e;font-size:18px;line-height:24px;letter-spacing:1px;cursor:pointer;transition:border-color .15s,color .15s,background-color .15s;}
.fkSelector__choice--wide{width:191px;}
.fkSelector__choice--small{width:122px;}
.fkSelector__field input[type="radio"]:checked+.fkSelector__choice{border-color:#bf0903;background:rgba(191,9,3,.1);color:#bf0903;}
.fkSelector__choiceDisabled{pointer-events:none;cursor:not-allowed;}
.fkSelector__choiceDisabled .fkSelector__choice{cursor:not-allowed;background:#c8c8c8;color:#6a6a6a;border-color:#a8a8a8;opacity:1;}
.fkSelector__choice i{display:inline-flex;align-items:center;justify-content:center;width:28px;height:24px;font-style:normal;font-size:22px;line-height:1;}
.fkSelector__arrowPair{gap:0!important;font-family:Arial,sans-serif;font-size:17px!important;font-weight:700;}
.fkSelector__arrowPair b{font-weight:700;line-height:1;}
.fkSelector__arrowPair--in{gap:1px!important;}
.fkSelector__input{display:block;width:180px;height:48px;padding:0 17px;border:0;border-radius:0;outline:0;background:#f2f2f2;color:#1d1d1d;font:400 18px/48px "Microsoft YaHei",Arial,sans-serif;letter-spacing:1px;-moz-appearance:textfield;}
.fkSelector__input::-webkit-inner-spin-button,.fkSelector__input::-webkit-outer-spin-button{margin:0;-webkit-appearance:none;}
.fkSelector__input::placeholder{color:#8e8e8e;opacity:1;}
.fkSelector__input:focus{box-shadow:inset 0 0 0 1px #bf0903;}
.fkSelector__divider{width:100%;height:2px;background:#bf0903;}
.fkSelector__note{overflow:hidden;margin:28px 0 0;color:#1d1d1d;font-size:18px;font-weight:400;line-height:28px;letter-spacing:1px;}
.fkSelector__products{display:flex;align-items:center;justify-content:center;gap:54px;height:183px;margin-top:26px;}
.fkSelector__products img{display:block;width:auto;max-width:180px;height:183px;object-fit:contain;}
.fkSelector__products img:first-child{height:170px;}
.fkSelector__note--second{margin-top:24px;}
.fkSelector__section--basic>.fkSelector__divider:last-child{margin-top:30px;}
.fkSelector__section--workpiece{margin-top:80px;}
.fkSelector__workpieceGrid{display:grid;grid-template-columns:repeat(3,300px);gap:40px;margin-top:34px;min-height:148px;}
.fkSelector__section--finger{margin-top:16px;}
.fkSelector__fingerGrid{display:grid;grid-template-columns:170px 230px 230px 230px 180px;gap:40px;margin-top:34px;min-height:194px;}
.fkSelector__section--options{margin-top:30px;}
.fkSelector__optionsGrid{display:grid;grid-template-columns:220px 220px 220px 220px 160px;gap:40px;margin-top:34px;min-height:276px;}
.fkSelector__choiceStack--option{gap:10px;}
.fkSelector__divider--options{margin-top:10px;}
.fkSelector__action{margin-top:80px;text-align:center;margin-bottom: 150px;}
.fkSelector__action button{width:260px;height:64px;padding:0;border:0;border-radius:0;background:#bf0903;color:#fff;font:700 36px/64px "Microsoft YaHei",Arial,sans-serif;letter-spacing:1px;cursor:pointer;transition:background-color .18s ease;}
.fkSelector__action button:hover{background:#9f0702;}
.fkSelector__action button:active{transform:translateY(1px);}
.fkSelector__status{min-height:24px;margin:12px 0 0;color:#bf0903;font-size:14px;}

@media screen and (max-width:1100px){
  .fkSelector{min-height:0;padding-bottom:100px;}
  .fkSelector__basicGrid{grid-template-columns:repeat(2,minmax(0,1fr));gap:40px 60px;}
  .fkSelector__workpieceGrid{grid-template-columns:repeat(3,minmax(0,1fr));}
  .fkSelector__fingerGrid{grid-template-columns:repeat(3,minmax(0,1fr));}
  .fkSelector__optionsGrid{grid-template-columns:repeat(3,minmax(0,1fr));}
}

@media screen and (max-width:767px){
  .fkSelector__brand{height:105px;}
  .fkSelector__brandInner{max-width:calc(100% - 40px);padding-top:34px;}
  .fkSelector__brand img{width:145px;height:auto;}
  .fkSelector__hero{height:auto;min-height:230px;}
  .fkSelector__heroInner{max-width:calc(100% - 40px);padding:42px 0;}
  .fkSelector__hero h1{font-size:30px;}
  .fkSelector__hero p{margin-top:24px;font-size:15px;line-height:25px;}
  .fkSelector__form{max-width:calc(100% - 40px);margin-top:55px;}
  .fkSelector__sectionTitle{height:52px;padding-left:14px;font-size:27px;line-height:52px;}
  .fkSelector__basicGrid,.fkSelector__workpieceGrid,.fkSelector__fingerGrid,.fkSelector__optionsGrid{grid-template-columns:1fr;gap:30px;margin-top:28px;min-height:0;}
  .fkSelector__label{white-space:normal;font-size:16px;}
  .fkSelector__input{width:100%;}
  .fkSelector__choiceStack label{display:block;width:230px;max-width:100%;}
  .fkSelector__choice,.fkSelector__choice--wide,.fkSelector__choice--small{width:100%;max-width:230px;}
  .fkSelector__divider{margin-top:38px;}
  .fkSelector__note{font-size:15px;line-height:25px;}
  .fkSelector__products{gap:15px;height:150px;}
  .fkSelector__products img,.fkSelector__products img:first-child{max-width:31%;height:140px;}
  .fkSelector__section--basic>.fkSelector__divider:last-child{margin-top:35px;}
  .fkSelector__section--workpiece,.fkSelector__section--finger,.fkSelector__section--options{margin-top:55px;}
  .fkSelector__divider--options{margin-top:45px;}
  .fkSelector__action{margin-top:55px;}
  .fkSelector__action button{width:220px;height:58px;font-size:30px;line-height:58px;}
  .fkSelectorHelpModal{padding:16px;}
  .fkSelectorHelpModal__dialog{padding:22px 18px 24px;}
  .fkSelectorHelpModal__title{font-size:18px;}
  .fkSelectorHelpModal__body{font-size:14px;line-height:1.65;}
}