.landing-notice {
  position: fixed;
  z-index: 10000;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.landing-notice.is-visible {
  opacity: 1;
}

.landing-notice__overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 20, 38, 0.72);
}

.landing-notice__dialog {
  position: relative;
  width: 100%;
  max-width: 580px;
  max-height: calc(100vh - 40px);
  overflow: auto;
  box-sizing: border-box;
  padding: 36px;
  border-radius: 12px;
  background: #fff;
  color: #1d2733;
  box-shadow: 0 18px 55px rgba(0, 0, 0, 0.3);
}

.landing-notice__title {
  margin: 0 36px 16px 0;
  font-size: 1.75rem;
  line-height: 1.2;
}

.landing-notice__message {
  font-size: 1rem;
  line-height: 1.6;
}

.landing-notice__x {
  position: absolute;
  top: 12px;
  right: 14px;
  padding: 5px 10px;
  border: 0;
  background: transparent;
  color: #4a5563;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
}

.landing-notice__button {
  margin-top: 18px;
  padding: 11px 24px;
  border: 0;
  border-radius: 5px;
  background: #12345b;
  color: #fff;
  font-weight: 700;
  cursor: pointer;
}

.landing-notice__button:hover,
.landing-notice__button:focus {
  background: #0b2746;
}

body.landing-notice-open {
  overflow: hidden;
}

@media (max-width: 600px) {
  .landing-notice__dialog {
    padding: 28px 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .landing-notice {
    transition: none;
  }
}