:root { color-scheme: light; --primary:#2563eb; --muted:#667085; --line:#e5e7eb; --paper:#fff; --bg:#f5f6f8; --ink:#1f2329; }
* { box-sizing:border-box; }
body { margin:0; background:var(--bg); color:var(--ink); font:16px/1.7 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif; }
a { color:var(--primary); text-decoration:none; overflow-wrap:anywhere; }
a:hover { text-decoration:underline; }
a:focus-visible { outline:2px solid var(--primary); outline-offset:4px; }
.site-header { display:flex; align-items:center; gap:12px; padding:16px max(16px,calc((100% - 860px)/2)); border-bottom:1px solid var(--line); background:var(--paper); }
.brand { color:var(--ink); font-size:18px; font-weight:650; white-space:nowrap; }
.site-header nav { display:flex; align-items:center; gap:16px; margin-left:auto; font-size:14px; }
.home-link { display:inline-flex; flex-shrink:0; align-items:center; justify-content:center; width:32px; height:32px; border-radius:8px; background:#eff6ff; }
.home-link svg { width:20px; height:20px; }
.home-link:hover { background:#e4edff; }
.news-main { width:min(860px,calc(100% - 32px)); min-height:65vh; margin:24px auto; }
.news-main.news-main--article { margin-top:6px; }
.page-intro h1 { margin:0 0 6px; font-size:28px; line-height:1.4; }
.page-intro p { margin:0; color:var(--muted); font-size:14px; }
.categories { display:flex; gap:8px; overflow-x:auto; margin:20px 0 16px; padding:4px 0; }
.categories a { flex-shrink:0; padding:6px 15px; border-radius:8px; color:var(--muted); white-space:nowrap; }
.categories .active { background:#eaf2ff; color:var(--primary); font-weight:600; }
.news-list { overflow:hidden; border:1px solid var(--line); border-radius:14px; background:var(--paper); }
.news-card { padding:24px; }
.news-card + .news-card { border-top:1px solid var(--line); }
.article-category { font-size:13px; }
.news-card h2 { margin:6px 0 8px; font-size:22px; line-height:1.45; }
.news-card h2 a { color:var(--ink); }
.summary { margin:0 0 12px; color:#536178; font-size:14px; overflow-wrap:anywhere; }
.article-meta { display:flex; flex-wrap:wrap; gap:6px 18px; color:var(--muted); font-size:12px; }
.pagination { display:flex; flex-wrap:wrap; justify-content:center; gap:8px; margin:24px 0; }
.pagination a { min-width:38px; padding:6px 12px; border:1px solid var(--line); border-radius:8px; background:var(--paper); text-align:center; }
.pagination .active { border-color:var(--primary); color:#fff; background:var(--primary); }
.breadcrumbs { display:flex; flex-wrap:wrap; gap:10px; margin:0 0 6px; font-size:13px; }
.article { padding:32px; border:1px solid var(--line); border-radius:14px; background:var(--paper); }
.article h1 { margin:0 0 16px; font-size:30px; line-height:1.4; overflow-wrap:anywhere; }
.article header { padding-bottom:20px; border-bottom:1px solid var(--line); }
.article-body { margin-top:24px; overflow-wrap:anywhere; }
.article-body p { margin:0 0 1em; }
.article-body h2,.article-body h3,.article-body h4 { margin:1.5em 0 .6em; line-height:1.5; }
.article-body img { display:block; max-width:100%; height:auto; margin:18px auto; }
.article-body a { text-decoration:underline; }
.article-body blockquote { margin:16px 0; padding:12px 16px; border-left:3px solid #93b4f7; background:#f6f8fc; color:var(--muted); }
.article-body pre { overflow-x:auto; padding:16px; background:#f5f6f8; font-size:13px; }
.article-source { display:flex; flex-wrap:wrap; justify-content:space-between; gap:12px; margin-top:28px; padding-top:16px; border-top:1px solid var(--line); font-size:13px; }
.related { margin-top:18px; padding:20px 24px; border:1px solid var(--line); border-radius:14px; background:var(--paper); }
.related h2 { margin:0 0 12px; font-size:18px; }
.related ul { margin:0; padding-left:20px; }
.related li + li { margin-top:8px; }
.tool-links { display:flex; flex-wrap:wrap; gap:12px 20px; font-size:14px; }
.empty { padding:36px 20px; text-align:center; }
.site-footer { display:flex; flex-wrap:wrap; justify-content:center; gap:12px 24px; padding:24px 16px; border-top:1px solid var(--line); font-size:13px; }
@media(max-width:480px) {
  .site-header { padding:12px; gap:8px; }
  .brand { font-size:15px; }
  .site-header nav { gap:10px; font-size:12px; }
  .news-main { width:calc(100% - 24px); margin:6px auto 18px; }
  .page-intro h1 { font-size:23px; }
  .news-card { padding:18px 16px; }
  .news-card h2 { font-size:19px; }
  .article { padding:22px 16px; }
  .article h1 { font-size:24px; }
  .article-body { font-size:16px; }
  .related { padding:18px 16px; }
}