/* 基本設定 */
body {
    font-family: 'Noto Sans JP', 'Roboto', sans-serif;
    line-height: 1.7;
    color: #333;
    background-color: #f9f9f9;
    margin: 0;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ヘッダー */
header {
    background-color: #2c3e50;
    color: #ecf0f1;
    padding: 40px 0;
    text-align: center;
}

header h1 {
    margin: 0;
    font-size: 2.5em;
    font-weight: 700;
}

header p {
    margin: 5px 0 0;
    font-size: 1.1em;
    font-weight: 300;
}

/* ナビゲーション */
nav {
    background-color: #34495e;
    padding: 10px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: center;
}

nav ul li {
    display: inline-block;
    margin: 0 15px;
}

nav ul li a {
    color: #ecf0f1;
    text-decoration: none;
    font-size: 1.1em;
    padding: 5px 10px;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: #1abc9c;
}

/* メインコンテンツ */
main {
    padding: 40px 0;
}

section {
    background-color: #fff;
    margin-bottom: 30px;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

h2 {
    font-size: 2em;
    color: #1abc9c;
    border-bottom: 2px solid #1abc9c;
    padding-bottom: 10px;
    margin-top: 0;
}

/* プロフィールセクション */
.profile-content {
    display: flex;
    align-items: flex-start;
    gap: 30px;
}

.profile-pic {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid #ddd;
}

.profile-text {
    flex: 1;
}

/* 論文・連絡先リスト */
section ul {
    list-style: none;
    padding-left: 0;
}

section ul li {
    background-color: #f9f9f9;
    padding: 15px;
    margin-bottom: 10px;
    border-left: 4px solid #1abc9c;
}

a {
    color: #16a085;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.mark{
	background:linear-gradient(transparent 89%, #ffbf7f 89%);
	font-weight:bold;
	font-size: 22px;
	line-height: 22px;
	height: 22px;
}

.line {
	position: relative;
	border-left: solid 8px #009cd3;/*左線*/
}

/* フッター */
footer {
    text-align: center;
    padding: 20px 0;
    background-color: #2c3e50;
    color: #ecf0f1;
    font-size: 0.9em;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .profile-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    nav ul li {
        margin: 0 8px;
    }
}