```css
ai {
    --primary-color: #89CFF0; /* 柔和婴儿蓝 */
    --secondary-color: #F4C2C2; /* 柔和婴儿粉 */
    --bg-color: #FAFAFA;
    --text-color: #4A4A4A;
    --border-radius: 12px;
    
    display: block;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-color);
    background: linear-gradient(135deg, rgba(137, 207, 240, 0.1) 0%, rgba(244, 194, 194, 0.1) 100%);
    padding: 15px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    max-width: 600px;
    margin: 10px auto;
    font-size: 14px;
    line-height: 1.6;
}

ai details {
    background: #FFFFFF;
    border: 1px solid rgba(137, 207, 240, 0.3);
    border-radius: var(--border-radius);
    margin-bottom: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
}

ai details:hover {
    box-shadow: 0 6px 20px rgba(244, 194, 194, 0.2);
    border-color: rgba(244, 194, 194, 0.5);
}

ai summary {
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: #FFF;
    padding: 10px 15px;
    font-weight: bold;
    cursor: pointer;
    user-select: none;
    list-style: none;
    text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

/* 新增：将 summary 中被 b 标签包裹的【】内容设为黑色 */
ai summary b {
    color: #000000;
    text-shadow: none; /* 移除阴影以保证黑色字体清晰锐利 */
}

ai summary::-webkit-details-marker {
    display: none;
}

ai p {
    margin: 10px;
    padding: 10px;
    background: var(--bg-color);
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
}

ai p[t]::before {
    content: attr(t);
    display: block;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 5px;
    font-size: 0.9em;
    text-transform: uppercase;
    letter-spacing: 1px;
}

ai p[t="内心想法"] {
    border-left-color: var(--secondary-color);
    background: rgba(244, 194, 194, 0.05);
    font-style: italic;
}

ai p[t="内心想法"]::before {
    color: var(--secondary-color);
}

ai d {
    display: inline-block;
    background: rgba(137, 207, 240, 0.15);
    padding: 3px 8px;
    border-radius: 4px;
    margin: 3px;
    font-size: 0.95em;
    border: 1px solid rgba(137, 207, 240, 0.2);
}

ai text {
    display: block;
    padding: 5px;
    color: #555;
}

ai opts {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 15px;
}

ai opt {
    background: #FFFFFF;
    border: 1px solid var(--primary-color);
    padding: 10px 15px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
    color: var(--text-color);
}