/* PC ↔ 모바일 뷰포트 불일치 — redirect 대신 안내 오버레이 */

html.platform-viewport-gated,
html.platform-viewport-gated body {
  overflow: hidden !important;
}

.platform-viewport-gate {
  position: fixed;
  inset: 0;
  z-index: 11500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: max(24px, env(safe-area-inset-top)) max(20px, env(safe-area-inset-right))
    max(24px, env(safe-area-inset-bottom)) max(20px, env(safe-area-inset-left));
  box-sizing: border-box;
  background: rgba(12, 12, 14, 0.94);
  backdrop-filter: blur(10px) saturate(1.05);
  -webkit-backdrop-filter: blur(10px) saturate(1.05);
}

.platform-viewport-gate.hidden {
  display: none !important;
}

.platform-viewport-gate__card {
  width: min(400px, 100%);
  padding: 28px 24px 32px;
  border-radius: 16px;
  background: #fffcfa;
  border: 1px solid rgba(42, 47, 54, 0.1);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.28);
  text-align: center;
}

.platform-viewport-gate__brand {
  margin: 0 0 18px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(42, 47, 54, 0.42);
}

.platform-viewport-gate__title {
  margin: 0 0 14px;
  font-size: clamp(1.05rem, 4vw, 1.18rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.45;
  color: #2a2f36;
}

.platform-viewport-gate__lead {
  margin: 0;
  font-size: 0.88rem;
  font-weight: 500;
  line-height: 1.65;
  letter-spacing: -0.02em;
  color: #4f565e;
  white-space: pre-line;
}

.platform-viewport-gate__actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid rgba(42, 47, 54, 0.1);
}

.platform-viewport-gate__cta {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 46px;
  padding: 12px 16px;
  border: 1px solid rgba(42, 47, 54, 0.16);
  border-radius: 12px;
  background: #fff;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #2a2f36;
  cursor: pointer;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.9) inset, 0 2px 8px rgba(42, 47, 54, 0.06);
  transition: background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.platform-viewport-gate__cta:hover {
  background: #fafafa;
  border-color: rgba(42, 47, 54, 0.22);
}

.platform-viewport-gate__cta:active {
  background: #f3f4f6;
  box-shadow: none;
}

.platform-viewport-gate__cta:focus-visible {
  outline: 2px solid rgba(42, 47, 54, 0.35);
  outline-offset: 2px;
}

.platform-viewport-gate__hint {
  margin: 10px 0 0;
  font-size: 0.74rem;
  font-weight: 500;
  line-height: 1.5;
  color: rgba(79, 86, 94, 0.82);
}

@media (prefers-reduced-motion: reduce) {
  .platform-viewport-gate {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}