 <style>
    :root { color-scheme: light dark; }
    body {
      margin: 0;
      font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
      line-height: 1.5;
    }
    .wrap {
      max-width: 880px;
      margin: 0 auto;
      padding: 24px;
    }
    header {
      padding: 24px 0 12px;
      border-bottom: 1px solid rgba(127,127,127,.25);
    }
    h1 { margin: 0; font-size: 2rem; }
    nav a {
      margin-right: 12px;
      text-decoration: none;
    }
    main { padding: 20px 0; }
    article {
      padding: 16px;
      border: 1px solid rgba(127,127,127,.25);
      border-radius: 12px;
    }
    .hero {
      margin: 12px 0 16px;
      border-radius: 12px;
      overflow: hidden;
      border: 1px solid rgba(127,127,127,.25);
    }
    .hero img {
      display: block;
      width: 100%;
      height: auto;
    }
    footer {
      padding: 16px 0;
      border-top: 1px solid rgba(127,127,127,.25);
      font-size: 0.9rem;
      opacity: 0.85;
    }
    .muted { opacity: 0.75; }

.post-link {
    margin-bottom: 24px;
    cursor: pointer;
}

.post-date {
    color: #888;
    font-size: 0.85rem;
    margin-bottom: 4px;
}

.post-title {
    color: #005d7d;
    display: block;
    visibility: visible;
}

.post-link:hover .post-title {
    text-decoration: underline;
}

.blog-layout {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 40px;
}

.blog-sidebar {
    border-right: 1px solid #333;
    padding-right: 20px;

    height: 100vh;
    overflow-y: auto;

    position: sticky;
    top: 0;
}

.blog-content {
    padding: 20px;
}


.blog-content {
    max-width: 760px;
    padding: 40px;
}

.blog-content h1 {
    font-size: 2rem;
    line-height: 1.2;
    margin-bottom: 0.5em;
}

.blog-content h2 {
    font-size: 1.4rem;
    margin-top: 2em;
    margin-bottom: 0.6em;
}

.blog-content p {
    font-size: 1.08rem;
    line-height: 1.75;
    margin-bottom: 1.2em;
}

.blog-content ul {
    margin-bottom: 1.4em;
    padding-left: 1.4em;
}

.blog-content li {
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 0.5em;
}

.blog-content img {
    max-width: 100%;
    height: auto;
    margin: 24px 0;
    border-radius: 12px;
}

.blog-content .mail-block {
    margin: 30px 0;
}

.blog-content .mail-block p {
    font-size: 0.92rem;
    line-height: 1.45;
    color: #0F3163;
    font-style: italic;
    margin-bottom: 0.7em;
}

.training-table {
    width: 100%;

    border-collapse: collapse;

    margin: 35px 0;

    font-size: 0.98rem;
}

.training-table th {
    text-align: left;

    color: #9aa0a6;

    font-weight: 600;

    padding: 14px 18px;

    border-bottom: 1px solid #444;
}

.training-table td {
    padding: 14px 18px;

    border-bottom: 1px solid #2a2a2a;
}

.training-table tr:hover {
    background: rgba(255,255,255,0.03);
}

.training-table th,
.training-table td {
    text-align: left;
    padding: 14px 18px;
}

@media (max-width: 800px) {

    .blog-layout {
        display: block;
    }

    .blog-sidebar {
        position: static;
        height: auto;
        overflow: visible;
        border-right: none;
        border-bottom: 1px solid #333;
        padding: 20px;
        margin-bottom: 20px;
    }

    .blog-content {
        max-width: none;
        padding: 20px;
    }

    .training-table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }
}

  </style>
