.htrp-wrap{background:#1a1a1a;color:#fff;max-width:520px;margin:40px auto;padding:30px;border-radius:14px;text-align:center;
  font-family:"Segoe UI",Arial,sans-serif;box-shadow:0 0 12px #48babb66}
.htrp-wrap h2{color:#48babb;margin-top:0}
#htrp-code{width:100%;padding:12px;border:1px solid #48babb;border-radius:8px;background:#111;color:#fff}
#htrp-btn{margin-top:12px;background:#48babb;color:#1a1a1a;border:none;padding:12px 24px;border-radius:8px;cursor:pointer}
#htrp-btn:hover{background:#36a0a7}
#htrp-result{margin-top:20px}
#htrp-result.err{color:#ff6b6b}
#htrp-result.ok{color:#48babb}