:root {
  --auth-font-family: "Poppins", "Montserrat", "Alibaba PuHuiTi", "SourceHanSansCN", sans-serif;
  --auth-letter-spacing: -0.5px;
  --auth-primary-color: #667eea;
  --auth-text-dark: #222222;
  --auth-text-gray: #666666;
  --auth-text-light: #939BA2;
  --auth-border-color: #D1D7DB;
  --auth-bg-white: #FFFFFF;
}
body {
  width: 100vw; height: 100vh;
  background: url('../images/login_bg_img.png') no-repeat center center;
  background-size: cover;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--auth-font-family);
  letter-spacing: var(--auth-letter-spacing);
}
.register_wrp {
  width: 480px; min-height: 580px;
  background: var(--auth-bg-white);
  border-radius: 20px; padding: 36px;
  position: relative;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
}
.close_icon {
  width: 20px; height: 20px;
  cursor: pointer; opacity: 0.6;
  transition: opacity 0.2s;
}
.close_icon:hover { opacity: 1; }
.main { margin-top: 25px; padding: 0 10px; }
.title {
  font-weight: 600; font-size: 32px;
  color: var(--auth-text-dark);
}
.draw_img { width: 112px; height: 24px; margin-top: 5px; }
.tips {
  font-size: 14px; color: var(--auth-text-light);
  margin-top: 10px;
}
.items { margin-top: 25px; }
.items .item { margin-top: 20px; }
.items .item:first-child { margin-top: 0; }
.items .item span {
  display: block; font-size: 14px;
  color: #5A6771; margin-bottom: 8px;
}
.items .item input {
  display: block; width: 100%; height: 48px;
  background: var(--auth-bg-white);
  border-radius: 8px;
  border: 1px solid var(--auth-border-color);
  padding: 0 15px; box-sizing: border-box;
  outline: none; font-size: 15px;
  color: var(--auth-text-dark);
  transition: border-color 0.3s;
}
.items .item input::placeholder { color: var(--auth-text-light); }
.items .item input:focus { border-color: var(--auth-primary-color); }
.captcha-item .captcha-wrap {
  display: flex; align-items: center; gap: 10px;
}
.captcha-item .captcha-wrap input { flex: 1; width: auto; }
.captcha-img {
  width: 120px; height: 48px;
  border-radius: 8px;
  border: 1px solid var(--auth-border-color);
  cursor: pointer;
}
.captcha-img:hover { opacity: 0.8; }
.register_btn {
  width: 100%; height: 56px;
  background: var(--auth-text-dark);
  border-radius: 28px; margin-top: 35px;
  text-align: center; line-height: 56px;
  font-weight: 500; font-size: 16px;
  color: var(--auth-bg-white);
  cursor: pointer; transition: background 0.3s;
}
.register_btn:hover { background: #333; }
.register_btn.disabled { opacity: 0.6; cursor: not-allowed; }
.login-link {
  text-align: center; margin-top: 18px;
  font-size: 14px; color: var(--auth-text-gray);
}
.login-link a { color: var(--auth-primary-color); text-decoration: none; }
.login-link a:hover { text-decoration: underline; }
@media screen and (max-width: 520px) {
  .register_wrp { width: 90vw; padding: 25px; }
  .captcha-img { width: 100px; height: 44px; }
}