/* ========== 基本設定 ========== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
            line-height: 1.8;
            color: #333;
            background: #f0f4f1;
        }
        a {
            color: #2d8659;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #1f5d3d;
        }
        /* ========== レイアウト ========== */
        .site-wrapper {
            max-width: 800px;
            margin: 0 auto;
            background: #fafbfa;
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.05);
        }
        /* ========== ヘッダー ========== */
        .primary-header {
            background: linear-gradient(135deg, #3fa36f 0%, #2d8659 100%);
            padding: 2rem 1.5rem;
            text-align: center;
        }
        .primary-header h1 {
            margin: 0;
        }
        .primary-header h1 a {
            color: #ffffff;
            font-size: 1.8rem;
            font-weight: 700;
            display: block;
            transition: opacity 0.3s ease;
        }
        .primary-header h1 a:hover {
            opacity: 0.9;
            color: #ffffff;
        }
        .header-visual {
            max-width: 800px;
            width: 100%;
            height: auto;
            display: block;
        }
        /* ========== メインコンテンツ ========== */
        .content-area {
            padding: 2.5rem 1.5rem;
        }
        /* 見出し */
        .content-area h2 {
            font-size: 1.6rem;
            color: #2d8659;
            padding: 0.8rem 0 0.8rem 1rem;
            border-left: 5px solid #3fa36f;
            background: linear-gradient(90deg, rgba(63, 163, 111, 0.08) 0%, transparent 100%);
            margin: 2.5rem 0 1.5rem;
            font-weight: 700;
        }
        .content-area h2:first-child {
            margin-top: 0;
        }
        .content-area h3 {
            font-size: 1.3rem;
            color: #2d8659;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #a8d5bf;
            margin: 2rem 0 1.2rem;
            font-weight: 600;
        }
        .content-area h4 {
            font-size: 1.1rem;
            color: #3fa36f;
            padding-left: 0.8rem;
            border-left: 3px solid #a8d5bf;
            margin: 1.5rem 0 1rem;
            font-weight: 600;
        }
        /* 段落 */
        .content-area p {
            margin: 1.2rem 0;
        }
        /* 画像 */
        .content-area img {
            max-width: 100%;
            height: auto;
            display: block;
            margin: 1.5rem auto;
        }
        /* リスト */
        .content-area ul,
        .content-area ol {
            margin: 1.2rem 0 1.2rem 1.8rem;
        }
        .content-area ul li,
        .content-area ol li {
            margin: 0.6rem 0;
            padding-left: 0.5rem;
        }
        .content-area ul li {
            list-style-type: none;
            position: relative;
        }
        .content-area ul li::before {
            content: "\2713";
            color: #3fa36f;
            font-weight: bold;
            position: absolute;
            left: -1.3rem;
        }
        /* テーブル */
        .content-area table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            background: #ffffff;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        }
        .content-area table th,
        .content-area table td {
            padding: 1rem;
            border: 1px solid #d5e5dc;
            text-align: left;
        }
        .content-area table th {
            background: #3fa36f;
            color: #ffffff;
            font-weight: 600;
        }
        .content-area table tr:nth-child(even) {
            background: #f5f9f7;
        }
        /* カード型リンク */
        .link-card-set {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 1.2rem;
            margin: 2rem 0;
        }
        .link-card-item {
            background: #ffffff;
            border: 2px solid #d5e5dc;
            border-radius: 8px;
            padding: 1.5rem;
            text-align: center;
            transition: all 0.3s ease;
            display: block;
        }
        .link-card-item:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 16px rgba(45, 134, 89, 0.15);
            border-color: #3fa36f;
        }
        .link-card-item span {
            color: #2d8659;
            font-weight: 600;
            font-size: 1.1rem;
        }
        /* ========== フッター ========== */
        .site-footer {
            background: #2d8659;
            color: #ffffff;
            padding: 2.5rem 1.5rem 1.5rem;
        }
        .footer-navigation {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1.5rem;
            margin-bottom: 2rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.2);
        }
        .footer-navigation a {
            color: #ffffff;
            font-size: 0.95rem;
            transition: opacity 0.3s ease;
        }
        .footer-navigation a:hover {
            opacity: 0.8;
            color: #ffffff;
        }
        .copyright-section {
            text-align: center;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.9);
        }
        .copyright-section a {
            color: #ffffff;
            font-weight: 600;
        }
        .copyright-section a:hover {
            color: #ffffff;
            opacity: 0.8;
        }
        /* ========== レスポンシブ対応 ========== */
        @media (max-width: 600px) {
            .primary-header {
                padding: 1.5rem 1rem;
            }
            .primary-header h1 a {
                font-size: 1.5rem;
            }
            .content-area {
                padding: 2rem 1rem;
            }
            .content-area h2 {
                font-size: 1.4rem;
                padding: 0.6rem 0 0.6rem 0.8rem;
            }
            .content-area h3 {
                font-size: 1.2rem;
            }
            .content-area h4 {
                font-size: 1.05rem;
            }
            .content-area table th,
            .content-area table td {
                padding: 0.7rem;
                font-size: 0.9rem;
            }
            .link-card-set {
                grid-template-columns: 1fr;
            }
            .footer-navigation {
                flex-direction: column;
                align-items: center;
                gap: 1rem;
            }
        }