/* ============================================================
   知识中心 / 文章页样式（复用主站变量与导航、页脚）
   ============================================================ */

/* ---------- 面包屑 ---------- */
.crumb { padding: 18px 0 0; font-size: 13px; color: var(--gray-light); }
.crumb a { color: var(--gray); }
.crumb a:hover { color: var(--blue); }
.crumb span { margin: 0 7px; color: #cbd5e1; }

/* ---------- 文章头部 ---------- */
.art-hero { padding: 26px 0 30px; border-bottom: 1px solid var(--line); }
.art-hero h1 { font-size: 34px; color: var(--ink); line-height: 1.32; letter-spacing: -.4px; }
.art-meta { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 16px; font-size: 13px; color: var(--gray-light); }
.art-meta b { color: var(--gray); font-weight: 500; }
.art-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.art-tag {
  display: inline-block; padding: 4px 12px; border-radius: 20px;
  background: var(--blue-light); color: var(--blue-dark); font-size: 12.5px; font-weight: 500;
}
.art-summary {
  margin-top: 20px; padding: 18px 22px; background: var(--bg-gray);
  border-left: 3px solid var(--blue); border-radius: 0 10px 10px 0;
  font-size: 15px; color: var(--gray); line-height: 1.85;
}
.art-summary b { color: var(--ink); }

/* ---------- 正文排版 ---------- */
.art-layout { display: grid; grid-template-columns: 1fr 300px; gap: 56px; padding: 40px 0 60px; align-items: start; }
.art-body { font-size: 16.5px; line-height: 1.95; color: #2b3a55; min-width: 0; }
.art-body > p { margin-bottom: 20px; }
.art-body h2 {
  font-size: 23px; color: var(--ink); margin: 44px 0 18px;
  padding-left: 14px; border-left: 4px solid var(--blue); line-height: 1.4;
}
.art-body h3 { font-size: 18.5px; color: var(--ink); margin: 32px 0 14px; }
.art-body strong, .art-body b { color: var(--ink); font-weight: 700; }
.art-body em { font-style: normal; color: var(--red); font-weight: 600; }
.art-body ul, .art-body ol { margin: 0 0 20px; padding-left: 0; list-style: none; }
.art-body ul li, .art-body ol li {
  position: relative; padding-left: 26px; margin-bottom: 11px; line-height: 1.9;
}
.art-body ul li::before {
  content: ''; position: absolute; left: 8px; top: 12px;
  width: 7px; height: 7px; border-radius: 50%; background: var(--blue);
}
.art-body ol { counter-reset: artol; }
.art-body ol li::before {
  counter-increment: artol; content: counter(artol);
  position: absolute; left: 0; top: 4px;
  width: 19px; height: 19px; border-radius: 50%; background: var(--blue); color: #fff;
  font-size: 12px; font-weight: 700; display: flex; align-items: center; justify-content: center;
  line-height: 1;
}
.art-body blockquote {
  margin: 24px 0; padding: 18px 22px; background: #fff9ec;
  border-left: 3px solid #f0b429; border-radius: 0 10px 10px 0;
  font-size: 15.5px; color: #7a5a12; line-height: 1.85;
}
.art-body blockquote b { color: #6b4a08; }
.art-body table {
  width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 14.5px;
  box-shadow: var(--shadow-sm); border-radius: 10px; overflow: hidden;
}
.art-body th { background: var(--ink); color: #fff; font-weight: 600; }
.art-body th, .art-body td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--line); }
.art-body tbody tr:nth-child(even) { background: var(--bg-gray); }
.art-body tbody tr:last-child td { border-bottom: none; }
.art-body a.inlink { color: var(--blue); font-weight: 600; border-bottom: 1px dashed var(--blue); }
.art-body a.inlink:hover { background: var(--blue-light); }
.art-body .art-code {
  margin: 24px 0; padding: 18px 20px; background: var(--bg-gray);
  border-left: 3px solid var(--gray-light); border-radius: 0 8px 8px 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 14px; line-height: 2; color: #334155; word-break: break-all;
}

/* ---------- 文内转化卡 ---------- */
.art-cta {
  margin: 40px 0; padding: 28px 30px; border-radius: var(--radius);
  background: linear-gradient(135deg, #0f2a6b, #1e5eff); color: #fff;
}
.art-cta h4 { font-size: 19px; color: #fff; margin-bottom: 10px; }
.art-cta p { font-size: 14.5px; color: rgba(255,255,255,.82); line-height: 1.8; margin-bottom: 18px; }
.art-cta-row { display: flex; flex-wrap: wrap; gap: 12px; }
.art-cta .btn-w { background: #fff; color: var(--blue); font-weight: 700; }
.art-cta .btn-w:hover { background: #eaf1ff; }
.art-cta .btn-o { border: 1px solid rgba(255,255,255,.55); color: #fff; }
.art-cta .btn-o:hover { background: rgba(255,255,255,.14); }
/* 官方试用直达（文章页 CTA 下方） */
.art-cta p.art-cta-more {
  margin: 20px 0 0; padding-top: 16px; border-top: 1px solid rgba(255,255,255,.2);
  font-size: 13.5px; color: rgba(255,255,255,.72); line-height: 2.2;
}
.art-cta .art-cta-more .tl-link {
  color: #fff; font-weight: 600; margin-left: 12px;
  border-bottom: 1px dashed rgba(255,255,255,.55);
}
.art-cta .art-cta-more .tl-link:hover { border-bottom-style: solid; }

/* ---------- 侧栏 ---------- */
.art-side { position: sticky; top: 92px; display: flex; flex-direction: column; gap: 22px; }
.side-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow-sm); }
.side-card h5 { font-size: 15px; color: var(--ink); margin-bottom: 14px; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.side-card > a { display: block; font-size: 13.5px; color: var(--gray); line-height: 1.65; margin-bottom: 13px; transition: .18s; }
.side-card > a:last-child { margin-bottom: 0; }
.side-card > a:hover { color: var(--blue); transform: translateX(3px); }
.side-toc a { display: block; font-size: 13.5px; color: var(--gray); padding: 7px 0 7px 12px; border-left: 2px solid var(--line); line-height: 1.55; }
.side-toc a:hover { color: var(--blue); border-left-color: var(--blue); background: var(--blue-light); }
.side-contact { text-align: center; }
.side-contact b { display: block; font-size: 19px; color: var(--blue); margin: 8px 0 4px; }
.side-contact span { font-size: 12.5px; color: var(--gray-light); }
.side-contact .btn { width: 100%; margin-top: 14px; }

/* ---------- 底部相关阅读 ---------- */
.art-rel { padding: 0 0 60px; }
.art-rel h3 { font-size: 20px; color: var(--ink); margin-bottom: 20px; }
.rel-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.rel-card {
  display: block; padding: 22px; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow-sm); transition: .2s;
}
.rel-card:hover { border-color: var(--blue); box-shadow: var(--shadow); transform: translateY(-3px); }
.rel-card b { display: block; font-size: 16px; color: var(--ink); line-height: 1.5; margin-bottom: 9px; }
.rel-card p { font-size: 13.5px; color: var(--gray); line-height: 1.7; }

/* ---------- 知识中心卡片样式位于 style.css（首页与文章页共用） ---------- */

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .art-layout { grid-template-columns: 1fr; gap: 40px; }
  .art-side { position: static; }
  .rel-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 860px) {
  .art-hero h1 { font-size: 26px; }
  .art-body { font-size: 16px; }
  .art-body h2 { font-size: 20px; }
  .rel-grid { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .art-body table { font-size: 13px; }
  .art-body th, .art-body td { padding: 9px 10px; }
}