/* 移动端自适应方案：1rem = 100px (基于750px宽度) */
html { font-size: calc(100vw / 7.5); }

body {
    background-color: #fcfcfc;
    margin: 0;
    padding: 0;
    /* 严格执行：正文字体大小0.3rem */
    font-size: 0.3rem;
    font-family: -apple-system, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
    color: #333;
    line-height: 1.7;
    -webkit-tap-highlight-color: transparent;
}

/* 文字内容区：信函排版 */
.content-wrapper {
    padding: 0.5rem 0.4rem;
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.02);
}

.user-greeting {
    font-size: 0.34rem;
    font-weight: bold;
    color: #000;
    margin-bottom: 0.1rem;
    display: block;
}

.text-paragraph {
    text-align: justify;
    text-indent: 2em; /* 首行缩进，更符合中文阅读习惯 */
    margin-bottom: 0.1rem;
    color: #444;
}

.highlight-text {
    color: #333;
    font-weight: bold;
    border-left: 0.06rem solid #07c160;
    padding-left: 0.2rem;
    margin: 0.4rem 0;
    text-indent: 0;
}

/* 二维码关注区 */
.qr-section {
    /*padding: 0.8rem 0;*/
    text-align: center;
    background-color: #fcfcfc;
}

/* 模拟微信官方卡片样式 */
.official-card {
    display: inline-block;
    width: 4.8rem;
    background: #fff;
    border-radius: 0.16rem;
    box-shadow: 0 0.1rem 0.4rem rgba(0,0,0,0.08);
    overflow: hidden;
    border: 1px solid #eee;
}

.card-header {
    background-color: #07c160; /* 微信品牌绿 */
    color: #fff;
    padding: 0.2rem 0;
    font-size: 0.32rem;
    font-weight: bold;
}

.card-body {
    padding: 0.4rem 0.3rem;
}

.qr-image {
    width: 3.4rem;
    height: 3.4rem;
    display: block;
    margin: 0 auto;
    border-radius: 4px;
}

.card-footer {
    color: #999;
    font-size: 0.26rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-footer i {
    color: #07c160;
    font-size: 0.32rem;
    margin-right: 0.1rem;
}