body {
    margin: 0;
    font-family: "Microsoft YaHei", sans-serif;
    color: #ffffff;
    line-height: 1.7;
    padding: 15px;
    background: linear-gradient(135deg, #191a2b 0%, #25274d 100%);
}

/* 主体卡片 */
.info-box {
    padding: 18px;
    border-radius: 14px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    max-width: 850px;
    margin: 0 auto;
    background: rgba(139,92,246,0.15);
}

/* 标题 */
h1 {
    text-align: center;
    font-size: 28px;
    color: #ffffff;
    margin-bottom: 20px;
    font-weight: 700;
}

h3 {
    color: #ffffff;
    margin-top: 25px;
    margin-bottom: 10px;
    font-size: 20px;
    position: relative;
}

/* 小标题左侧竖线 */
h3::before {
    content: "";
    width: 4px;
    height: 18px;
    background: #FFC107;
    position: absolute;
    left: -10px;
    top: 4px;
    border-radius: 2px;
}

/* 普通段落 */
p {
    font-size: 16px;
    margin: 10px 0;
}

/* 列表优化 */
ul {
    padding-left: 20px;
    margin-top: 8px;
}

li {
    margin-bottom: 8px;
    font-size: 16px;
}

/* 页尾 */
.page-footer {
    margin-top: 25px;
    padding: 15px 10px;
    text-align: center;
    font-size: 14px;
    color: #666;
}

.page-footer a {
    color: #007AFF;
    text-decoration: none;
    font-size: 14px;
}

.page-footer a:hover {
    text-decoration: underline;
}

.footer-meta {
    margin-top: 5px;
    color: #777;
}

/* 手机适配 */
@media (max-width: 480px) {
    h1 {
        font-size: 24px;
    }

    h3 {
        font-size: 18px;
    }

    p, li {
        font-size: 15px;
    }

    .info-box {
        padding: 15px;
    }
}