body {
  margin: 0;
  height: 100vh;
  font-family: 'Segoe UI', Arial, sans-serif;
  background: linear-gradient(180deg, #f3f6fa 0%, #e4ecf5 100%);
  color: #1c1c1c;
  line-height: 1.6;
  padding: 60px 40px;
  overflow: hidden;
  position: relative;
}

/* Слегка размытая подложка */
.blur-overlay {
  position: absolute;
  inset: 0;
  backdrop-filter: blur(4px) brightness(0.9);
  z-index: 1;
  pointer-events: none;
}

/* Кнопка */
.buton {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 26px;
  border-radius: 14px;
  background: linear-gradient(135deg, #0057b8 0%, #0078ff 100%);
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 18px;
  box-shadow: 0 8px 28px rgba(3, 64, 120, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.8s ease;
  opacity: 0;
  animation: fadeIn 1.2s ease-out forwards 0.6s;
}

.buton__icon {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

/* Hover эффект */
.buton:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 38px rgba(3, 64, 120, 0.45);
}

/* Анимация появления */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Контент страницы */
.content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  font-size: 18px;
}