.bt-page{padding-top:65px;padding-bottom:80px;max-width:1000px}.bt-intro{text-align:center;max-width:650px;margin:0 auto 35px}.bt-intro h1{font-size:clamp(36px,5vw,59px)}.bt-intro p:last-child{color:#70665c}.bt-card{padding:35px;background:#fff;border:1px solid #dfd6cb}.bt-card label{display:block;font-size:14px;font-weight:600;margin-bottom:10px}.bt-input-row{display:flex;gap:12px}.bt-input-row input{flex:1;min-width:0;font-size:16px}.bt-input-row .button{flex-shrink:0}.bt-hint,.bt-provider{font-size:12px;color:#786d63}.bt-provider{margin:22px 0 0}.bt-status{font-size:13px;color:#723745}.bt-result{max-width:100%;overflow:hidden}.bt-result iframe{max-width:100%}.bt-external{display:inline-block;margin-top:15px;text-decoration:underline;font-size:13px}.bt-external[hidden]{display:none}.bt-help{margin:25px auto 0;max-width:800px}.bt-help summary{font-size:14px}.bt-help p{font-size:13px}@media(max-width:600px){.bt-page{padding-top:40px;padding-bottom:50px}.bt-card{padding:22px 17px}.bt-input-row{flex-direction:column}.bt-input-row input,.bt-input-row .button{width:100%}.bt-intro p:last-child{font-size:14px}}