body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
        "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
    margin: 0;
    line-height: 1.8;
    color: #333;
}

header {
    background-color: #003366;
    color: #fff;
    padding: 24px;
}

header h1 {
    margin: 0;
    font-size: 1.8em;
}

header p {
    margin: 4px 0 0;
    font-size: 0.95em;
}

nav {
    background-color: #f0f0f0;
    padding: 10px 20px;

    position: sticky;
    top: 0;
    z-index: 1000;

}

nav a {
    margin-right: 20px;
    text-decoration: none;
    color: #003366;
    font-weight: bold;
    padding-bottom: 2px;
}

nav a:hover {
    border-bottom: 2px solid #003366;
}

main {
    padding: 24px;
    max-width: 900px;
    margin: auto;
}

section {
    margin-bottom: 40px;
}

.funding-logos {
    display: flex;
    gap: 30px;
    align-items: center;
    flex-wrap: wrap;
}




.funding-list {
    margin-left: 1.5em;
}

.funding-list ul {
    margin-top: 0.3em;
    margin-left: 1.5em;
}


h2 {
    border-left: 6px solid #003366;
    padding-left: 10px;
    font-size: 1.4em;
}

footer {
    background-color: #003366;
    color: #fff;
    text-align: center;
    padding: 12px;
    font-size: 0.85em;
}

.topics-list {
    list-style: none;
    padding-left: 0;
}

.topics-date {
    font-weight: bold;
    margin-right: 1em;
    color: #003366;
}

/* 2カラム全体 */
.content-wrapper {
    display: flex;
    gap: 40px;
    align-items: flex-start;
}

/* 左：本文 */
.main-content {
    flex: 1;
}

/* 右：バナー */
.sidebar {
    width: 180px;
}

/* バナー縦並び */
.funding-banners {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* バナーサイズ統一 */
.funding-logo {
    width: auto;
    height: 60x;
}

@media (max-width: 800px) {
    .content-wrapper {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
    }

    .funding-banners {
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
    }
}

h4 {
    margin-top: 1.2em;
    margin-bottom: 0.4em;
    color: #003366;
}

section li {
    margin-left: 0.8em;
}

/* 立命館大学ロゴだけ小さくする */
img.funding-logo.ritsumeikan-logo {
    height: 70px;
    width: auto;


}

details {
    margin-bottom: 10px;
}

summary {
    cursor: pointer;
    font-weight: bold;
    color: #003366;
    margin-top: 10px;
}