blog/assets/css/feed.css

@namespace atom "http://www.w3.org/2005/Atom";
@namespace content "http://purl.org/rss/1.0/modules/content/";
@namespace dc "http://purl.org/dc/elements/1.1/";

body,
rss,
atom|feed {
    font-family: -apple-system, BlinkMacSystemFont,
        "Segoe UI", Roboto,
        "Noto Sans SC", "PingFang SC",
        "Microsoft YaHei", Arial, sans-serif;
    background: #f4f5f7;
    color: #222;
    margin: 0;
    padding: 2em 1em;
    /* 左右内边距 1em，竖屏不贴边 */
    font-size: 14px;
    line-height: 1.6;

    max-width: 780px;
    /* 最大宽度，桌面端居中 */
    margin-left: auto;
    margin-right: auto;
}

channel>title,
atom|feed>atom|title {
    display: block;
    font-size: 1.7em;
    font-weight: 700;
    margin: 0 0 1.2em 0;
    text-align: center;
    letter-spacing: -0.01em;
}

item,
atom|entry {
    display: block;
    background: #ffffff;
    padding: 1.1em 1.2em;
    margin-bottom: 1.1em;
    border-radius: 14px;
    box-shadow:
        0 8px 24px rgba(0, 0, 0, 0.04),
        0 2px 6px rgba(0, 0, 0, 0.03);
}

item>title,
atom|entry>atom|title {
    display: block;
    font-size: 1.15em;
    font-weight: 600;
    margin-bottom: 0.45em;
    color: #111;
    letter-spacing: -0.01em;
}

item>description,
atom|entry>atom|summary {
    display: block;
    color: #555;
    line-height: 1.65;
    max-height: 16.5em;
    overflow: hidden;
    position: relative;
}

item>description::after,
atom|entry>atom|summary::after {
    content: "…";
    position: absolute;
    right: 0.3em;
    bottom: 0;
    padding-left: 1.5em;
    background: linear-gradient(to right,
            rgba(255, 255, 255, 0),
            #ffffff 70%);
    font-weight: 600;
}

link,
guid,
pubDate,
author,
category,
comments,
source,
enclosure,
content|encoded,
dc|creator,
lastBuildDate,
atom|id,
atom|link,
atom|updated,
atom|published,
atom|author,
atom|category,
atom|rights,
atom|content,
language,
generator {
    display: none;
}

channel>description,
atom|feed>atom|subtitle {
    display: block;
    margin: 0.4em 0 2em 0;
    /* 与条目明显拉开 */
    text-align: center;
    color: #666;
    font-size: 0.95em;
}

channel>title,
atom|feed>atom|title {
    margin-bottom: 0.4em;
    /* 原来较紧，这里放松 */
}

atom|feed>atom|subtitle::after,
channel>description::after {
    content: "这是一个订阅源（Feed）。复制当前URL到任何支持 Atom/RSS 的阅读器，即可订阅本博客的最新文章。\A以下展示了此订阅源包含的最新文章：";
    display: block;
    text-align: center;
    font-size: 0.95em;
    color: #666;
    margin: 1em 0 2em 0;
    line-height: 1.5;
    white-space: pre-wrap;
}