#tomkat-gasrate-calculator { font-family: Arial, Helvetica, sans-serif; max-width: 850px; margin: 0 auto; color: rgb(17,17,17); }
    #tomkat-gasrate-calculator .tk-back-tools { display: block; background: rgb(85,85,85); color: white; padding: 12px; border-radius: 7px; font-size: 15px; font-weight: bold; text-align: center; text-decoration: none; margin: 10px 0 12px 0; }
    #tomkat-gasrate-calculator .tk-back-tools:hover { background: rgb(68,68,68); color: white; text-decoration: none; }
    #tomkat-gasrate-calculator .tk-header { background: rgb(0,31,77); color: white; text-align: center; padding: 14px; font-size: 22px; font-weight: bold; }
    #tomkat-gasrate-calculator .tk-sub { text-align: center; padding: 10px; border: 1px solid rgb(221,221,221); background: white; }
    #tomkat-gasrate-calculator .tk-box { background: white; border: 1px solid rgb(204,204,204); border-radius: 8px; padding: 14px; margin-top: 12px; }
    #tomkat-gasrate-calculator h2 { margin-top: 0; color: rgb(0,31,77); font-size: 20px; }
    #tomkat-gasrate-calculator .tk-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
    #tomkat-gasrate-calculator label { font-weight: bold; font-size: 13px; display: block; margin-bottom: 4px; }
    #tomkat-gasrate-calculator input, #tomkat-gasrate-calculator select { width: 100%; box-sizing: border-box; padding: 10px; font-size: 16px; border: 1px solid rgb(153,153,153); border-radius: 5px; }
    #tomkat-gasrate-calculator button { width: 100%; padding: 16px; margin-top: 14px; background: rgb(0,31,77); color: white; border: none; border-radius: 7px; font-size: 18px; font-weight: bold; cursor: pointer; }
    #tomkat-gasrate-calculator .tk-timer-display { background: rgb(238,245,255); border: 1px solid rgb(170,192,221); border-radius: 6px; padding: 14px; text-align: center; font-size: 28px; font-weight: bold; margin-top: 8px; }
    #tomkat-gasrate-calculator .tk-timer-buttons { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 10px; }
    #tomkat-gasrate-calculator .tk-timer-buttons button { margin-top: 0; }
    #tomkat-gasrate-calculator .tk-stop { background: rgb(122,16,16); }
    #tomkat-gasrate-calculator .tk-reset { background: rgb(85,85,85); }
    #tomkat-gasrate-calculator .tk-result { background: rgb(238,245,255); border: 1px solid rgb(170,192,221); border-radius: 6px; padding: 12px; margin-top: 8px; }
    #tomkat-gasrate-calculator .tk-result span.tk-value { font-size: 22px; font-weight: bold; display: block; margin-top: 4px; }
    #tomkat-gasrate-calculator .tk-explain { font-size: 13px; color: rgb(51,51,51); display: block; margin-top: 6px; line-height: 1.35; }
    #tomkat-gasrate-calculator .tk-note { background: rgb(255,244,207); border: 1px solid rgb(211,170,55); border-radius: 6px; padding: 10px; margin-top: 10px; }
    #tomkat-gasrate-calculator .tk-error { background: rgb(255,236,236); border: 1px solid rgb(204,119,119); border-radius: 6px; padding: 10px; margin-top: 10px; display: none; }
    #tomkat-gasrate-calculator .tk-small { font-size: 12px; color: rgb(85,85,85); }
    #tomkat-gasrate-calculator .tk-share-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 14px; }
    #tomkat-gasrate-calculator .tk-share-grid button { margin-top: 0; }
    #tomkat-gasrate-calculator .tk-copy { background: rgb(85,85,85); }
    #tomkat-gasrate-calculator .tk-footer { font-size: 12px; color: rgb(85,85,85); margin-top: 14px; line-height: 1.4; border-top: 1px solid rgb(221,221,221); padding-top: 10px; }
    @media(max-width:650px) { #tomkat-gasrate-calculator .tk-grid, #tomkat-gasrate-calculator .tk-timer-buttons, #tomkat-gasrate-calculator .tk-share-grid { grid-template-columns: 1fr; } #tomkat-gasrate-calculator .tk-header { font-size: 18px; } }