:root {
      --main-color: #ffffff;
      --sub-color: #000000;
      --highlight: #d7fc5e;
      --accent1: #F42272;
      --accent2: #9381FF;
      --active-link: #888888;
    }

    body {
      margin: 0;
      font-family: 'Noto Sans JP', sans-serif;
      background-color: var(--main-color);
      color: var(--sub-color);
    }

    a {
      color: var(--sub-color);
      text-decoration: none;
      transition: color 0.3s;
    }

    a:hover {
      color: var(--accent1);
    }

    a:active,
    .site-nav a:focus {
      color: var(--active-link);
    }

    .container {
      width: 90%;
      max-width: 1200px;
      margin: 0 auto;
    }

    .site-header {
      padding: 2rem 0;
      background-color: var(--main-color);
      border-bottom: 1px solid #eee;
    }

    .site-title {
      font-size: 2.5rem;
      font-weight: 700;
    }

    .site-nav ul {
      display: flex;
      list-style: none;
      gap: 2rem;
      padding-left: 0;
      margin-top: 1rem;
    }

    .hero {
      background-color: var(--highlight);
      padding: 6rem 0;
      text-align: center;
    }

    .hero h2 {
      font-size: 3rem;
      font-weight: 700;
      margin-bottom: 1rem;
    }

    .hero p {
      font-size: 1.2rem;
      color: var(--sub-color);
    }

    .latest-posts {
      padding: 4rem 0;
      background-color: var(--main-color);
    }

    .latest-posts h3 {
      font-size: 2rem;
      margin-bottom: 2rem;
      border-left: 8px solid var(--accent2);
      padding-left: 1rem;
    }

    .posts-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 2rem;
    }

    .post {
      background-color: #f9f9f9;
      padding: 1.5rem;
      border-left: 5px solid var(--accent1);
      transition: transform 0.3s ease;
    }

    .post:hover {
      transform: translateY(-5px);
      background-color: #fff;
    }

    .post h4 {
      font-size: 1.2rem;
      margin-bottom: 0.5rem;
      font-weight: 700;
    }

    .post p {
      font-size: 1rem;
      color: #333;
    }

    .site-footer {
      text-align: center;
      padding: 2rem 0;
      background-color: var(--main-color);
      color: #777;
      border-top: 1px solid #eee;
    }