.bt-modal{position:fixed;inset:0;z-index:90;background:rgba(20,18,16,.55);display:flex;align-items:center;justify-content:center;padding:20px}
.bt-box{position:relative;background:#fff;color:var(--ink);max-width:420px;width:100%;border-radius:14px;padding:28px 24px;font-size:15px;line-height:1.6}
.bt-box h3{font-family:var(--serif,Georgia);font-weight:400;font-size:26px;margin:0 0 10px;line-height:1.15}
.bt-box .btn{width:100%;justify-content:center;margin-top:14px}
.bt-x{position:absolute;top:8px;right:12px;font-size:26px;background:none;border:0;cursor:pointer;color:var(--muted)}
.bt-box input{width:100%;padding:12px;border:1px solid rgba(0,0,0,.2);border-radius:8px;font:inherit;margin-top:10px}
.bt-small{font-size:12px;color:var(--muted);margin-top:10px}