body {
    font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
    background-color: #f4f7f9;
    color: #333;
    margin: 0;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

h1 {
    font-size: 1.5rem;
    color: #2c3e50;
    border-bottom: 3px solid #3498db;
    padding-bottom: 10px;
    margin-bottom: 30px;
}

.se-table {
    width: 100%;
    max-width: 900px;
    border-collapse: collapse;
    background-color: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    overflow: hidden;
}

.se-table thead {
    background-color: #3498db;
    color: #fff;
}

.se-table th,
.se-table td {
    padding: 12px 15px;
    text-align: left;
    border: 1px solid #eee;
}

.se-table th {
    font-weight: bold;
    text-align: left;
    color: #fff;
}

/* 列ごとの幅調整 */
.col-no {
    max-width: 50px;
    text-align: center;
    color: #95a5a6;
}

/* タイトル列のスタイル（クリック可能であることを示す） */
.col-title {
    width: 250px;
    font-weight: bold;
    color: #2980b9;
    cursor: pointer;
    position: relative;
}

.col-title:hover {
    text-decoration: underline;
    background-color: #f0faff;
}

.col-desc {
    color: #555;
}

.se-table tbody tr:nth-child(even) {
    background-color: #fafafa;
}

/* コピー完了通知のツールチップ */
.copy-notify {
    position: absolute;
    background: rgba(46, 204, 113, 0.9);
    color: white;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 10px;
    top: -10px;
    right: 5px;
    display: none;
    pointer-events: none;
}

.col-desc {
    color: #555;
}

.se-table tbody tr:nth-child(even) {
    background-color: #f9fbfd;
}

.se-table tbody tr:hover {
    background-color: #e8f4fd;
    transition: background-color 0.2s;
}

/* フッターのスタイル */
footer {
    margin-top: auto;
    /* 常に最下部に配置 */
    padding: 20px;
    font-size: 12px;
    color: #95a5a6;
    text-align: center;
}

footer a {
    color: #95a5a6;
    text-decoration: none;
    border-bottom: 1px solid #ddd;
}

footer a:hover {
    color: #3498db;
}