.error-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(900px 420px at 8% 0%, rgba(197, 176, 141, 0.24), transparent 60%),
    radial-gradient(920px 420px at 100% 100%, rgba(52, 52, 52, 0.1), transparent 64%),
    var(--color-bg);
}

.error-card {
  width: min(680px, 100%);
  padding: 40px 28px;
  text-align: center;
  border-radius: 18px;
  border: 1px solid rgba(50, 50, 50, 0.14);
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 18px 40px rgba(20, 20, 20, 0.1);
}

.error-code {
  margin-bottom: 8px;
  font-size: clamp(2.4rem, 8vw, 3.2rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #2f2f2f;
}

.error-title {
  font-size: clamp(1.5rem, 4vw, 2.2rem);
}

.error-message {
  margin-top: 14px;
  color: #4a4a4a;
  font-size: clamp(1rem, 2.7vw, 1.15rem);
}

.error-action {
  margin-top: 26px;
}

@media (max-width: 640px) {
  .error-card {
    padding: 30px 20px;
    border-radius: 14px;
  }
}