:root{
  --brick:#8b2f2f; /* 砖红 */
  --sand:#f5efe6; /* 砂岩白 */
  --text:#222;
  --muted:#6b6b6b;
  --accent:var(--brick);
  --line: #dbd3cc; /* 细分隔线 */
  --max-width: 1300px; /* 在1120-1440间可以由容器限制 */
  --gap:24px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans CJK SC", "PingFang SC", sans-serif;
  font-size:16px;
  color:var(--text);
  background:var(--sand);
}
*{box-sizing:border-box}
body{margin:0;line-height:1.65;-webkit-font-smoothing:antialiased}
.site-header{border-bottom:1px solid var(--line);background:var(--sand)}
.brand-row{max-width:var(--max-width);margin:0 auto;display:flex;align-items:center;gap:16px;padding:18px 20px}
.brand{font-weight:700;color:var(--brick);text-decoration:none;border-right:1px solid var(--line);padding-right:14px}
.top-nav{margin-left:8px}
.top-nav a{color:var(--muted);text-decoration:none;font-size:14px;margin-left:12px}
.thin-toolbar{height:6px;background:transparent;border-top:1px solid var(--line)}
.page-ad{max-width:var(--max-width);margin:18px auto;padding:8px 20px;color:var(--muted);font-size:14px}
.page-wrap{max-width:var(--max-width);margin:0 auto;padding:24px 20px}

/* Title row: default mobile linear, desktop 7/5 split */
.title-row{display:block;margin-bottom:12px}
.article-title{margin:0 0 8px 0;font-size:22px;line-height:1.15;color:var(--text);font-weight:700}
.meta-narrow{font-size:13px;color:var(--muted)}
.meta-narrow .meta-item{margin-bottom:6px}
.summary{border-top:0;border-bottom:1px solid var(--line);padding:12px 0;margin-bottom:18px;background:transparent}
.summary p{margin:0;color:var(--muted)}

/* Content grid: on desktop, left main column wider, right sidebar narrow */
.content-grid{display:block}
.article-main{background:transparent}
.article-body{color:var(--text);font-size:16px}
.article-body :where(p, ul, ol){margin:0 0 1em 0}
.ad{border:1px solid var(--line);padding:10px;color:var(--muted);background:transparent}

.side-column{margin-top:18px}
.side-box{border-top:1px solid var(--line);padding:12px 0}
.side-heading{margin:0 0 8px 0;font-size:14px;color:var(--brick)}
.side-meta dl{margin:0}
.side-meta dt{font-size:13px;color:var(--muted)}
.side-meta dd{margin:4px 0 10px 0;font-size:14px}

/* FAQ: template expects {{faq}} to contain Q/A pairs; on desktop display left/right table-like */
.faq-table{font-size:15px;color:var(--text)}
.related-list{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.related-list > *{padding:6px 0;border-top:1px solid var(--line);font-size:14px}

/* Footer */
.site-footer{border-top:1px solid var(--line);background:transparent;padding:18px 20px}
.footer-inner{max-width:var(--max-width);margin:0 auto;color:var(--muted);font-size:13px}

/* Desktop: asymmetric magazine grid and layout differences */
@media (min-width:1024px){
  :root{font-size:17px}
  .page-ad{margin:22px auto}
  .title-row{display:grid;grid-template-columns:7fr 5fr;align-items:start;gap:24px;margin-bottom:18px}
  .article-title{font-size:34px;line-height:1.06;margin:0}
  .meta-narrow{padding-left:12px;border-left:1px solid var(--line);font-size:14px}

  .content-grid{display:grid;grid-template-columns:3fr 1fr;gap:32px;align-items:start}
  .article-main{padding-right:8px}

  /* Right column: metadata on top, FAQ intentionally offset (错位排列) */
  .side-column{display:flex;flex-direction:column}
  .side-meta{order:1}
  .side-faq{order:2;margin-top:28px;padding-top:12px;border-top:1px dashed var(--line)}
  .side-related{order:3;margin-top:20px}

  /* FAQ table-like: assume {{faq}} renders pairs as elements; force two-column appearance */
  .faq-table{display:grid;grid-template-columns:1fr 1fr;gap:8px}
  .faq-table > *{padding:6px;border-bottom:1px solid var(--line)}

  /* Related pattern: two-column summary list (保持) */
  .related-list{grid-template-columns:1fr 1fr}
}

/* Mobile: natural document order, compact readable layout */
@media (max-width:767px){
  :root{font-size:15px}
  .brand-row{padding:12px}
  .article-title{font-size:20px}
  .title-row{display:block}
  .meta-narrow{margin-bottom:8px}
  .summary{margin-bottom:12px}
  .content-grid{display:block}
  .side-column{margin-top:12px}
  .side-box{padding:10px 0}
  .faq-table{display:block}
  .faq-table > *{padding:8px 0;border-bottom:1px solid var(--line)}
  .related-list{grid-template-columns:1fr;gap:8px}
  .related-list > *{padding:8px 0;border-top:1px solid var(--line)}
  .page-ad{margin:12px 16px}
  .site-footer{padding:14px 16px}
}

/* Accessibility and details */
a{color:var(--accent);text-decoration:none}
h1,h2{font-weight:700}
/* Visual signature: 全页只使用直角和细线；禁止阴影与圆角 */
*{border-radius:0!important;box-shadow:none!important}