/* リセットとベーススタイル */
* {
    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-color: #f8f9fa;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    background-color: #ffffff;
    min-height: 100vh;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.05);
}

/* メインコンテンツ */
main {
    padding: 50px 30px 40px;
}

/* DOSKAセクション */
.doska-section {
    margin-bottom: 60px;
    text-align: center;
}

.logo-container {
    margin-bottom: 30px;
}

.doska-logo {
    max-width: 100%;
    height: auto;
    width: 500px;
}

.doska-info {
    margin-top: 30px;
}

.site-name {
    font-size: 32px;
    font-weight: 700;
    color: #0066cc;
    margin-bottom: 15px;
}

.main-copy {
    font-size: 24px;
    font-weight: 600;
    color: #333;
    margin-bottom: 10px;
}

.sub-copy {
    font-size: 18px;
    color: #666;
    margin-bottom: 25px;
    font-style: italic;
}

.description {
    background-color: #f8f9fa;
    padding: 25px;
    border-radius: 8px;
    margin: 30px 0;
    text-align: left;
}

.description p {
    font-size: 16px;
    line-height: 1.9;
    color: #444;
}

.link-button {
    margin-top: 30px;
}

.link-button a {
    display: inline-block;
    padding: 15px 40px;
    background-color: #0066cc;
    color: #ffffff;
    text-decoration: none;
    border-radius: 50px;
    font-size: 18px;
    font-weight: 600;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.link-button a:hover {
    background-color: #0052a3;
    transform: translateY(-2px);
}

/* 会社概要セクション */
.company-info {
    margin-bottom: 60px;
}

.company-info,
.press-release {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 2px solid #e9ecef;
}

.company-info h2 {
    font-size: 26px;
    font-weight: 700;
    color: #222;
    margin-bottom: 30px;
    text-align: center;
}

.company-info table {
    width: 100%;
    border-collapse: collapse;
    background-color: #ffffff;
}

.company-info th,
.company-info td {
    padding: 18px 20px;
    text-align: left;
    border-bottom: 1px solid #e9ecef;
}

.company-info th {
    background-color: #f8f9fa;
    font-weight: 600;
    color: #555;
    width: 30%;
    vertical-align: top;
}

.company-info td {
    color: #333;
    line-height: 1.8;
}

.company-info td a {
    color: #0066cc;
    text-decoration: none;
}

.company-info td a:hover {
    text-decoration: underline;
}

/* プレスリリースセクション */
.press-release {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 2px solid #e9ecef;
}

.press-release h2 {
    font-size: 26px;
    font-weight: 700;
    color: #222;
    margin-bottom: 30px;
    text-align: center;
}

.press-release-content {
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 8px;
    text-align: center;
}

.press-release-content p {
    font-size: 16px;
    line-height: 1.8;
    color: #444;
    margin-bottom: 25px;
}

.pdf-link {
    margin-top: 20px;
}

.pdf-link a {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 30px;
    background-color: #dc3545;
    color: #ffffff;
    text-decoration: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.pdf-link a:hover {
    background-color: #c82333;
    transform: translateY(-2px);
}

.pdf-link svg {
    flex-shrink: 0;
}

/* フッター */
footer {
    background-color: #f8f9fa;
    padding: 30px;
    text-align: center;
    border-top: 1px solid #e9ecef;
    margin-top: 60px;
}

footer p {
    font-size: 14px;
    color: #666;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    .container {
        box-shadow: none;
    }

    header {
        padding: 30px 20px 20px;
    }

    .company-name {
        font-size: 22px;
    }

    main {
        padding: 30px 20px;
    }

    .doska-logo {
        width: 100%;
        max-width: 400px;
    }

    .site-name {
        font-size: 26px;
    }

    .main-copy {
        font-size: 20px;
    }

    .sub-copy {
        font-size: 16px;
    }

    .description {
        padding: 20px;
    }

    .description p {
        font-size: 15px;
    }

    .link-button a {
        padding: 12px 30px;
        font-size: 16px;
    }

    .company-info h2 {
        font-size: 22px;
    }

    .company-info th,
    .company-info td {
        display: block;
        width: 100%;
        padding: 12px 15px;
    }

    .company-info th {
        background-color: #e9ecef;
        font-weight: 700;
        border-bottom: none;
        padding-bottom: 8px;
    }

    .company-info td {
        padding-top: 8px;
        padding-bottom: 20px;
    }
}

@media (max-width: 480px) {
    .company-name {
        font-size: 20px;
    }

    .site-name {
        font-size: 22px;
    }

    .main-copy {
        font-size: 18px;
    }

    .sub-copy {
        font-size: 14px;
    }

    .description p {
        font-size: 14px;
    }
}