/* --- 全体 --- */
body {
    font-family: "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
    background-color: #f4f4f9;
    color: #333;
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

/* --- ヘッダー --- */
header {
    background: linear-gradient(to right, #6a11cb, #2575fc);
    color: white;
    padding: 10px 20px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}

header h1 {
    margin: 0;
    font-size: 2em;
    display: inline-block;
}

/* --- ナビゲーションバー --- */
nav {
    margin-top: 10px;
}

nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

nav ul li {
    display: inline-block;
}

nav ul li a {
    text-decoration: none;
    color: white;
    padding: 8px 12px;
    border-radius: 5px;
    transition: background 0.3s;
}

nav ul li a:hover {
    background: rgba(255,255,255,0.2);
}

/* --- メイン --- */
main {
    max-width: 1000px;
    margin: 20px auto;
    padding: 0 20px;
    display: flex;
    flex-direction: column; /* 縦並び */
    gap: 30px; /* セクション間隔 */
}

/* --- 各セクション --- */
section {
    background: white;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

section h2 {
    margin-top: 0;
    font-size: 1.5em;
    color: #2575fc;
    border-bottom: 2px solid #2575fc;
    padding-bottom: 5px;
}

/* --- お知らせリスト --- */
#news-list, #news-list-page {
    list-style: none;
    padding-left: 0;
}

#news-list li, #news-list-page li {
    padding: 8px 0;
    border-bottom: 1px dashed #ccc;
}

/* --- 画像 --- */
section img {
    max-width: 100%;
    border-radius: 8px;
    margin-top: 10px;
}

/* --- ワールド紹介リスト --- */
#world ul {
    padding-left: 20px;
}

#world li {
    margin-bottom: 8px;
}

/* --- フッター --- */
footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 15px 0;
    margin-top: 40px;
}