/* article.clipfx.app — 极简文章阅读 */
:root {
  --bg: #ffffff;
  --fg: #1f2328;
  --muted: #656d76;
  --border: #e4e7eb;
  --link: #2563eb;
  --code-bg: #f4f5f7;
  --quote-bar: #d0d7de;
  --card-bg: #fbfcfd;
  --maxw: 720px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171a;
    --fg: #e6e6e6;
    --muted: #9aa4ae;
    --border: #2a2f36;
    --link: #6ea8fe;
    --code-bg: #1d2126;
    --quote-bar: #333a42;
    --card-bg: #191d21;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.site-nav {
  border-bottom: 1px solid var(--border);
  padding: 14px 20px;
}
.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  letter-spacing: .02em;
}
.site-nav a:hover { color: var(--fg); }

.article, .index {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 32px 20px 96px;
}

/* 文章头 */
.article-title {
  font-size: 1.85rem;
  line-height: 1.35;
  font-weight: 700;
  margin: .2em 0 .35em;
  letter-spacing: -.01em;
}
.byline {
  color: var(--muted);
  font-size: .9rem;
  margin: 0 0 1.4em;
}
img.cover {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--border);
  margin: 0 0 1.8em;
}

/* 目录 */
.toc {
  margin: 0 0 2em;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card-bg);
}
.toc summary {
  cursor: pointer;
  padding: 10px 16px;
  font-size: .9rem;
  color: var(--muted);
  user-select: none;
}
.toc ul { margin: 0; padding: 0 16px 12px 34px; }
.toc li { margin: .3em 0; font-size: .92rem; }
.toc a { color: var(--fg); text-decoration: none; }
.toc a:hover { color: var(--link); text-decoration: underline; }

/* 正文 */
.article-body { font-size: 1.02rem; }
.article-body h1, .article-body h2, .article-body h3 {
  line-height: 1.4;
  font-weight: 700;
  margin: 1.8em 0 .7em;
  scroll-margin-top: 20px;
}
.article-body h1 { font-size: 1.5rem; padding-bottom: .3em; border-bottom: 1px solid var(--border); }
.article-body h2 { font-size: 1.25rem; }
.article-body h3 { font-size: 1.1rem; }
.article-body p { margin: 1em 0; }
.article-body a { color: var(--link); text-decoration: none; }
.article-body a:hover { text-decoration: underline; }

.article-body img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 1.4em auto;
  border-radius: 10px;
  border: 1px solid var(--border);
}

.article-body blockquote {
  margin: 1.2em 0;
  padding: .2em 1em;
  color: var(--muted);
  border-left: 3px solid var(--quote-bar);
}
.article-body blockquote p { margin: .6em 0; }

.article-body ul, .article-body ol { padding-left: 1.5em; margin: 1em 0; }
.article-body li { margin: .35em 0; }

.article-body hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 2.4em 0;
}

.article-body code {
  background: var(--code-bg);
  padding: .15em .4em;
  border-radius: 5px;
  font-size: .88em;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* 表格 */
.table-wrap { overflow-x: auto; margin: 1.4em 0; }
.table-wrap table {
  border-collapse: collapse;
  width: 100%;
  font-size: .92rem;
}
.table-wrap th, .table-wrap td {
  border: 1px solid var(--border);
  padding: 8px 12px;
  text-align: left;
  vertical-align: top;
}
.table-wrap thead th { background: var(--card-bg); font-weight: 600; }

/* callout 提示条 */
.callout-label {
  display: inline-flex;
  align-items: center;
  gap: .4em;
  font-size: .82rem;
  font-weight: 600;
  padding: .3em .8em;
  border-radius: 8px;
  margin: 1.4em 0 -.3em;
  border: 1px solid var(--border);
  background: var(--card-bg);
}
.callout-label .ci { font-size: 1em; }
.callout-label.lc-tip     { color: #1a7f37; border-color: #1a7f3733; background: #1a7f3712; }
.callout-label.lc-note    { color: #2563eb; border-color: #2563eb33; background: #2563eb12; }
.callout-label.lc-example { color: #8250df; border-color: #8250df33; background: #8250df12; }
.callout-label.lc-warning { color: #9a6700; border-color: #9a670033; background: #9a670012; }
.callout-label.lc-success { color: #1a7f37; border-color: #1a7f3733; background: #1a7f3712; }
@media (prefers-color-scheme: dark) {
  .callout-label.lc-tip     { color: #4ac26b; }
  .callout-label.lc-note    { color: #6ea8fe; }
  .callout-label.lc-example { color: #b083f0; }
  .callout-label.lc-warning { color: #d4a72c; }
  .callout-label.lc-success { color: #4ac26b; }
}

/* 文末 */
.article-foot {
  margin-top: 3em;
  padding-top: 1.4em;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: .88rem;
}
.article-foot a { color: var(--link); text-decoration: none; }
.article-foot a:hover { text-decoration: underline; }

/* 首页列表 */
.index-title { font-size: 1.5rem; margin: .2em 0 1.2em; }
.cards { display: flex; flex-direction: column; gap: 18px; }
.card {
  display: flex;
  gap: 16px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--card-bg);
  text-decoration: none;
  color: inherit;
  transition: border-color .15s ease, transform .15s ease;
}
.card:hover { border-color: var(--link); transform: translateY(-1px); }
.card-thumb {
  flex: 0 0 96px;
  width: 96px;
  height: 96px;
  border-radius: 8px;
  overflow: hidden;
  background: var(--code-bg);
}
.card-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.card-text { min-width: 0; }
.card-text h2 { font-size: 1.08rem; margin: 0 0 .3em; line-height: 1.4; }
.card-meta { color: var(--muted); font-size: .8rem; margin: 0 0 .5em; }
.card-excerpt {
  color: var(--muted);
  font-size: .9rem;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

@media (max-width: 520px) {
  body { font-size: 16px; }
  .article-title { font-size: 1.5rem; }
  .card-thumb { flex-basis: 72px; width: 72px; height: 72px; }
}