:root {
  --bg-color: #f5f7fb;
  --text-color: #222;
  --card-bg: #fff;
  --accent: #2b6cb0;
}

body {
  font-family: "Hiragino Kaku Gothic ProN", "メイリオ", sans-serif;
  margin: 0;
  background: var(--bg-color);
  color: var(--text-color);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1rem;
}

.container {
  background: var(--card-bg);
  border-radius: 16px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
  padding: 2.5rem 3rem;
  max-width: 600px;
  width: 100%;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.container:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.1);
}

h1 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  color: var(--accent);
}

p {
  font-size: 1.1rem;
  line-height: 1.6;
  margin: 0.5rem 0;
}

.tel {
  margin-top: 1.5rem;
  font-weight: bold;
  font-size: 1.2rem;
}

.tel-link {
  color: var(--accent);
  text-decoration: none;
  pointer-events: none; /* ← PCではクリック無効 */
}

.tel-link:hover {
  text-decoration: underline;
  opacity: 0.8;
}

footer {
  margin-top: 2rem;
  font-size: 0.9rem;
  color: #555;
}

/* === レスポンシブデザイン === */
@media (max-width: 768px) {
  .container {
    padding: 2rem;
  }
  h1 {
    font-size: 1.6rem;
  }
  p {
    font-size: 1rem;
  }
  .tel {
    font-size: 1.1rem;
  }
  .tel-link {
    pointer-events: auto; /* ← スマホでは有効化 */
  }
}

@media (max-width: 480px) {
  body {
    padding: 0.5rem;
  }
  .container {
    padding: 1.5rem;
    border-radius: 12px;
  }
  h1 {
    font-size: 1.4rem;
  }
  p {
    font-size: 0.95rem;
  }
  .tel {
    font-size: 1rem;
  }
}