body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    font-size: 14px;
    line-height: 1.65;
    color: #333;
    max-width: 820px;
    margin: 0 auto;
    padding: 24px;
    background-color: #fff;
    overflow-wrap: break-word;
}
h1 {
    text-align: center;
    font-size: 20px;
    margin: 0 0 30px;
    color: #222;
    font-weight: 600;
}
h2.section-title {
    font-size: 16px;
    margin: 32px 0 18px;
    padding-bottom: 6px;
    border-bottom: 1px solid #ddd;
    color: #444;
    font-weight: 600;
}
.answer-block, .analysis-block {
    background-color: rgba(220, 240, 255, 0.7);
    padding: 12px 16px;
    margin: 14px 0;
    border-radius: 4px;
    font-weight: 500;
    overflow-wrap: break-word;
}
hr {
    margin: 32px 0;
    border: 0;
    border-top: 1px solid #eee;
}
img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 8px 0;
}
p { margin: 8px 0; }

/* ===== 修复新增样式 ===== */
.options-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 24px;
    margin: 12px 0;
    padding: 12px 16px;
    background: #f8fafc;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
}
.options-group p {
    margin: 0;
}
.image-group {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin: 12px 0;
    align-items: center;
    justify-content: center;
}
.image-group img {
    margin: 0;
}
.toggle-answer-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
    padding: 6px 12px;
    background: #2c5f8a;
    color: white;
    border: none;
    border-radius: 20px;
    font-size: 12px;
    cursor: pointer;
    opacity: 0.8;
    font-family: monospace;
}
.toggle-answer-btn:hover { opacity: 1; }
.answer-block.hidden-answer,
.analysis-block.hidden-answer { display: none !important; }