/* ===== 折叠栏整体：灰蓝气泡 ===== */
details {
display: block;
background: #eef1f7;
border-radius: 14px;
padding: 12px 16px;
margin-bottom: 14px;
max-width: 100%;
width: 100%;
box-sizing: border-box;
border: 1px solid #dce0e8;
box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}

/* ===== 折叠标题：浅灰气泡，撑满宽度 ===== */
details summary {
display: block;
list-style: none;
cursor: pointer;
background: #f0f2f5;
border-radius: 18px;
padding: 10px 18px;
font-weight: bold;
color: #1a1a2e;
width: 100%;
max-width: 100%;
box-sizing: border-box;
box-shadow: 0 1px 2px rgba(0,0,0,0.1);
text-align: left;
}

/* ===== 隐藏默认三角箭头 ===== */
details summary::-webkit-details-marker {
display: none;
}
details summary::marker {
display: none;
content: "";
}

/* ===== 仅折叠栏外部的正文段落缩进两格 ===== */
details ~ p {
text-indent: 2em !important;
}