/* リセットとベース */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
    padding: 20px;
}

/* コンテナ */
.container {
    max-width: 800px;
    margin: 0 auto;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    padding: 40px;
}

/* ヘッダー */
header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 2px solid #e0e0e0;
}

h1 {
    font-size: 2.5em;
    color: #2c3e50;
    margin-bottom: 10px;
}

.subtitle {
    font-size: 1.1em;
    color: #7f8c8d;
}

/* お知らせセクション */
.notice {
    background-color: #f8f9fa;
    border-left: 4px solid #3498db;
    padding: 20px;
    margin-bottom: 40px;
    border-radius: 4px;
}

.notice p {
    margin-bottom: 12px;
}

.notice p:last-child {
    margin-bottom: 0;
}

.homepage-link {
    font-size: 1.1em;
    margin-top: 15px;
}

.homepage-link a {
    color: #3498db;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s ease;
}

.homepage-link a:hover {
    color: #2980b9;
    text-decoration: underline;
}

/* アプリセクション */
.apps {
    margin-bottom: 40px;
}

h2 {
    font-size: 1.5em;
    color: #2c3e50;
    margin-bottom: 20px;
}

.app-list {
    list-style: none;
}

.app-list li {
    padding: 12px 0;
    border-bottom: 1px solid #e0e0e0;
}

.app-list li:last-child {
    border-bottom: none;
}

.app-list a {
    color: #3498db;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.app-list a:hover {
    color: #2980b9;
}

/* フッター */
footer {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
    color: #7f8c8d;
    font-size: 0.9em;
}

/* レスポンシブ対応 */
@media (max-width: 600px) {
    .container {
        padding: 20px;
    }
    
    h1 {
        font-size: 2em;
    }
    
    .homepage-link {
        font-size: 1em;
    }
}