@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

:root {
  --color-primary: #333333;
  --color-secondary: #666666;
  --color-light: #f5f5f5;
  --color-white: #ffffff;
  --font-family: 'Noto Sans SC', sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  background-color: var(--color-white);
  color: var(--color-primary);
  line-height: 1.7;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.transition {
  transition: all 0.3s ease;
}

.hover-scale:hover {
  transform: scale(1.02);
}

.hover-opacity:hover {
  opacity: 0.9;
}

footer {
  background-color: var(--color-primary);
  color: var(--color-light);
  padding: 2rem 0;
  text-align: center;
}