*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;color:#111;background:#fff}

.bt-header{background:#c8102e;padding:18px 0}
.bt-header__inner{max-width:1300px;margin:0 auto;display:flex;align-items:center;padding:0 20px}
.bt-brand{display:flex;align-items:center;max-width:600px}
.bt-logo,.custom-logo{
    height:auto;
    max-height:70px;
    width:auto;
    max-width:100%;
    display:block;
}
.bt-search{margin-left:auto}
.bt-search input{padding:10px 14px;border:0;font-size:14px;width:260px}

.bt-main{padding:20px}
.bt-wrap{max-width:1300px;margin:0 auto}
.bt-grid{display:grid;grid-template-columns:320px 1fr 300px;gap:20px}

.bt-card{border:1px solid #e9e9e9;background:#fff}
.bt-card__head{padding:12px 14px;border-bottom:1px solid #e9e9e9;font-weight:800}
.bt-card__body{padding:14px}

@media(max-width:1100px){
  .bt-grid{grid-template-columns:1fr}
  .bt-search input{width:200px}
}