/* 首页「获取内测邀请码」弹窗：中性配色，桌面居中、手机底部贴边。 */
.invite-beta-modal[hidden] { display: none; }
.invite-beta-modal {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background: rgba(17, 17, 17, 0.42);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}
.invite-beta-dialog {
  position: relative;
  width: min(420px, 100%);
  padding: 28px 24px 24px;
  border-radius: 20px;
  background: #fff;
  color: #111;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.18);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", sans-serif;
  animation: invite-beta-in 0.22s ease-out;
}
@keyframes invite-beta-in {
  from { opacity: 0; transform: translateY(12px) scale(0.98); }
  to { opacity: 1; transform: none; }
}
.invite-beta-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: 50%;
  background: rgb(246, 246, 246);
  color: #555;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}
.invite-beta-close:hover { background: rgb(242, 242, 242); color: #111; }
.invite-beta-title {
  margin: 0 0 18px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.invite-beta-form { display: flex; flex-direction: column; gap: 12px; }
.invite-beta-input {
  width: 100%;
  height: 48px;
  padding: 0 16px;
  border: 1px solid rgb(232, 232, 232);
  border-radius: 12px;
  background: rgb(246, 246, 246);
  color: #111;
  font: inherit;
  font-size: 16px;
  outline: none;
  box-sizing: border-box;
  transition: border-color 0.15s, background 0.15s;
}
.invite-beta-input::placeholder { color: #9a9a9a; }
.invite-beta-input:focus { border-color: #111; background: #fff; }
.invite-beta-input[aria-invalid="true"] { border-color: #c2412d; }
.invite-beta-submit {
  height: 48px;
  border: 0;
  border-radius: 12px;
  background: #111;
  color: #fff;
  font: inherit;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.15s;
}
.invite-beta-submit:hover { transform: translateY(-1px); }
.invite-beta-submit:disabled { opacity: 0.55; cursor: default; transform: none; }
.invite-beta-result {
  margin: 4px 0 0;
  min-height: 22px;
  font-size: 14px;
  line-height: 1.55;
  color: #444;
}
.invite-beta-result.is-error { color: #c2412d; }
.invite-beta-result.is-success { color: #111; font-weight: 500; }
.invite-beta-dialog.is-done .invite-beta-form { display: none; }
.invite-beta-dialog.is-done .invite-beta-result {
  margin-top: 0;
  padding: 16px;
  border-radius: 12px;
  background: rgb(246, 246, 246);
  font-size: 15px;
}
@media (max-width: 640px) {
  .invite-beta-modal { align-items: flex-end; padding: 0; }
  .invite-beta-dialog {
    width: 100%;
    border-radius: 20px 20px 0 0;
    padding: 24px 20px calc(24px + env(safe-area-inset-bottom));
  }
  .invite-beta-title { font-size: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  .invite-beta-dialog { animation: none; }
}