/* 基本的なスタイルは維持しつつ、新要素のスタイルを追加・調整 */
body {
    font-family: "メイリオ", Meiryo, "ヒラギノ角ゴ Pro W3", "Hiragino Kaku Gothic Pro", "ＭＳ Ｐゴシック", "MS PGothic", sans-serif;
    background-color: #f0f0f0;
    color: #333;
    margin: 0;
    padding: 0;
}
.wrapper {
    max-width: 900px;
    margin: 15px auto;
    background-color: #fff;
    border: 3px solid #cc0000; /* 枠をより警告的に */
    padding: 10px 20px;
    box-shadow: 0 0 10px rgba(0,0,0,0.5); /* 影を追加 */
}
header {
    background-color: #c00;
    color: #fff;
    text-align: center;
    padding: 10px;
    border-bottom: 5px solid #ff0;
}
header h1 {
    margin: 0;
    font-size: 24px;
    text-shadow: 2px 2px 3px #000; /* 文字に影を追加 */
}
nav {
    background-color: #333;
    padding: 8px;
    text-align: center;
}
nav a {
    color: #fff;
    text-decoration: none;
    margin: 0 15px;
    font-weight: bold;
}
nav a:hover {
    text-decoration: underline;
}
main {
    padding: 15px 0;
}
article h2 {
    font-size: 22px;
    color: #c00;
    border-bottom: 3px dotted #c00;
    padding-bottom: 5px;
}
.warning {
    background-color: #ff0;
    border: 3px dashed #c00;
    padding: 15px;
    font-weight: bold;
    font-size: 1.1em;
}
.banner {
    display: block;
    max-width: 80%;
    margin: 20px auto;
    border: 3px solid #333;
}
h3 {
    font-size: 18px;
    background-color: #ddd;
    padding: 5px 10px;
    border-left: 10px solid #c00;
}
/* 内部告発メモのスタイル */
.leaked-memo {
    background-color: #ffffdd;
    border: 1px solid #ccc;
    padding: 15px;
    margin: 20px 0;
    font-family: "MS Mincho", "ＭＳ 明朝", serif;
}
.leaked-memo h4 {
    margin-top: 0;
    text-decoration: underline;
    font-weight: bold;
}

#action-area {
    margin-top: 30px;
    padding: 15px;
    border: 2px solid #333;
    background-color: #f9f9f9;
}
#password {
    padding: 8px;
    font-size: 16px;
    border: 1px solid #999;
}
button { /* ボタンのスタイルを汎用的に */
    padding: 8px 15px;
    font-size: 16px;
    font-weight: bold;
    color: #fff;
    background-color: #333;
    border: 1px solid #000;
    cursor: pointer;
}
button:hover {
    background-color: #555;
}
#message {
    color: red;
    font-weight: bold;
    height: 20px;
}
#result {
    font-weight: bold;
    text-align: center;
}
.next-stage {
    display: inline-block;
    margin-top: 15px;
    padding: 10px 20px;
    font-size: 20px;
    color: #fff;
    background-color: #c00;
    text-decoration: none;
    border: 2px solid #ff0;
}
footer {
    margin-top: 20px;
    text-align: center;
    font-size: 12px;
    color: #666;
    border-top: 1px solid #ccc;
    padding-top: 10px;
}