* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: #030102;
}

body {
  color: #ffd968;
  font-family: Georgia, serif;
}

.buyin-shell {
  position: relative;
  width: min(100vw, 700px);
  min-height: 100dvh;
  margin: 0 auto;
  padding-top: 58vh;
  padding-bottom: 40px;

  background:
  linear-gradient(rgba(0,0,0,.00), rgba(0,0,0,.65)),
    url("./images/buyin-bg.jpeg")
    center top / cover
    no-repeat;
}

.buyin-card {
  position: relative;
  width: 84%;
  margin: 0 auto;
  padding: 16px;

  border: 1px solid rgba(255, 215, 0, 0.55);
  border-radius: 16px;

  background: rgba(0, 0, 0, 0.72);
  box-shadow: 0 0 22px rgba(0, 0, 0, 0.8);

  text-align: center;
}

.buyin-card h1 {
  margin: 0 0 8px;
  font-size: 26px;
  letter-spacing: 0.08em;
}

.buyin-subtitle {
  margin: 0 0 14px;
  font-size: 13px;
  color: #f4df9c;
}

.buyin-card label {
  display: block;
  margin: 10px 0 5px;
  text-align: left;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.buyin-card input,
.buyin-card textarea {
  width: 100%;
  padding: 11px;
  border: 1px solid rgba(255, 215, 0, 0.45);
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.72);
  color: #fff3c4;
  font-family: Georgia, serif;
  font-size: 15px;
}

.buyin-card textarea {
  resize: none;
}

#buyinBtn {
  width: 100%;
  margin-top: 14px;
  padding: 13px;
  border: 1px solid rgba(255, 215, 0, 0.75);
  border-radius: 12px;

  background: linear-gradient(180deg, #4b0f66, #17051f);
  color: #ffd968;

  font-family: Georgia, serif;
  font-size: 16px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

#buyinResult {
  margin-top: 12px;
  min-height: 22px;
  color: #f4df9c;
  font-size: 13px;
  line-height: 1.35;
}

.buyin-hotspot {
  position: absolute;
  z-index: 10;
  color: transparent;
  text-decoration: none;
}

.buyin-back {
  left: 7%;
  top: 93.5%;
  width: 25%;
  height: 4%;
}

.buyin-cashier {
  left: 68%;
  top: 93.5%;
  width: 25%;
  height: 4%;
}

.buyin-lobby-btn {
  position: fixed;
  left: 22px;
  top: 100px;
  z-index: 20;

  padding: 10px 18px;
  border: 1px solid rgba(255, 215, 0, 0.65);
  border-radius: 14px;

  background: rgba(0, 0, 0, 0.68);
  color: #ffd968;

  font-family: Georgia, serif;
  font-size: 18px;
  font-weight: 900;
  text-decoration: none;
}