:root {
  --ink: #272333;
  --muted: #817c91;
  --purple: #7353d9;
  --line: #ebe8f2;
}
* { box-sizing: border-box; }
html { scroll-padding-top: 24px; }
body { margin: 0; color: var(--ink); background: #faf9fd; font-family: system-ui, -apple-system, "Microsoft YaHei", sans-serif; line-height: 1.8; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--purple); text-decoration: underline; }
a:focus-visible { outline: 2px solid var(--purple); outline-offset: 5px; }
.site-header { padding: 22px max(6vw, 24px); background: white; border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; gap: 25px; }
.brand { font-size: 22px; font-weight: 750; letter-spacing: 2px; color: var(--purple); white-space: nowrap; }
.site-header nav { display: flex; gap: 20px; flex-wrap: wrap; font-size: 14px; }
main { max-width: 1100px; padding: 64px 24px; margin: auto; }
.eyebrow { color: var(--purple); font-size: 12px; letter-spacing: 3px; }
h1 { font-size: clamp(30px, 4vw, 42px); line-height: 1.35; letter-spacing: -1px; margin: 18px 0; overflow-wrap: anywhere; }
h2 { font-size: 26px; line-height: 1.5; }
h3 { font-size: 20px; line-height: 1.5; }
p { color: #696376; }
.intro { max-width: 680px; font-size: 17px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr)); gap: 24px; margin-top: 40px; }
.card { overflow: hidden; border: 1px solid var(--line); border-radius: 14px; background: white; }
.card-cover-link { display: block; }
.card img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; }
.card-inner { padding: 22px; }
.card h2 { font-size: 19px; margin: 9px 0; }
.tag { font-size: 12px; color: var(--purple); }
.meta { font-size: 13px; color: var(--muted); display: flex; flex-wrap: wrap; gap: 4px 18px; }
.article { max-width: 780px; margin: auto; }
.article--magazine h1 { font-size: clamp(32px, 5vw, 52px); }
.article-cover { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 14px; margin: 28px 0; }
.prose { font-size: 16px; overflow-wrap: anywhere; }
.prose h2, .prose h3 { margin-top: 32px; }
.prose img { max-width: 100%; height: auto; }
.prose pre { padding: 20px; background: #eeeaf5; overflow: auto; border-radius: 8px; }
.prose a, .sources a { color: var(--purple); text-decoration: underline; }
.prose blockquote { border-left: 3px solid var(--purple); padding-left: 20px; color: var(--muted); }
.prose table { width: 100%; border-collapse: collapse; display: block; overflow: auto; }
.prose th, .prose td { border: 1px solid var(--line); padding: 10px 14px; }
.answer-box { margin: 28px 0; padding: 20px 24px; border-left: 4px solid var(--purple); border-radius: 0 12px 12px 0; background: #eeeaf8; }
.answer-box h2 { font-size: 16px; margin: 0 0 8px; }
.answer-box p { margin: 0; color: var(--ink); white-space: pre-line; }
.toc { padding: 18px 24px; background: white; border: 1px solid var(--line); border-radius: 12px; margin: 28px 0; }
.toc h2 { font-size: 16px; margin: 0 0 10px; }
.toc ol { padding-left: 20px; margin: 0; }
.toc-level-3 { margin-left: 18px; }
.sources, .faq { margin-top: 36px; padding-top: 18px; border-top: 1px solid var(--line); }
.faq p { white-space: pre-line; }
.breadcrumbs { font-size: 13px; color: var(--muted); margin-bottom: 28px; }
.breadcrumbs ol { display: flex; flex-wrap: wrap; list-style: none; gap: 8px; margin: 0; padding: 0; }
.breadcrumbs li + li::before { content: "/"; margin-right: 8px; color: #aaa3bc; }
.related { max-width: 780px; margin: 45px auto 0; border-top: 1px solid var(--line); padding-top: 20px; }
.related h2 { font-size: 20px; }
.related a { color: var(--purple); }
.pagination { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 20px; margin-top: 32px; }
.pagination a { background: white; border: 1px solid var(--line); border-radius: 8px; padding: 8px 16px; }
.site-footer { max-width: 1052px; margin: 30px auto 0; padding: 28px 24px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 18px; }
.empty { padding: 50px; background: white; border: 1px dashed var(--line); border-radius: 14px; color: var(--muted); }
.preview-notice { background: #fff2d7; padding: 10px 16px; border-radius: 8px; }
.skip-link { position: absolute; left: 16px; top: -80px; background: white; color: var(--purple); padding: 10px 16px; z-index: 10; }
.skip-link:focus { top: 10px; }
@media (max-width: 700px) {
  .site-header { align-items: flex-start; flex-direction: column; }
  .site-header nav { gap: 12px 18px; }
  main { padding-top: 32px; }
  .meta { gap: 4px 12px; }
  .toc, .answer-box { padding: 16px; }
}