:root {
  --color-bg: #ffffff;
  --color-text: #1a1a2e;
  --color-accent: #2563eb;
}

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

body {
  font-family: "Helvetica Neue", Arial, "Hiragino Sans", "Noto Sans JP", sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
}

.hero {
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 2rem;
  gap: 1rem;
}

.hero h1 {
  font-size: clamp(1.8rem, 5vw, 3rem);
  font-weight: 700;
}

.hero p {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: #475569;
}