/* ===== 知识中心详情页专用样式 ===== */
.kc-article-hero{
  padding:48px 0 32px;
  background:radial-gradient(1000px 400px at 50% -20%,rgba(46,91,255,.08),transparent 60%),linear-gradient(180deg,#F8FAFC 0%,#FFFFFF 100%);
  border-bottom:1px solid var(--border);
}
.kc-breadcrumb{
  display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-400);
  margin-bottom:24px;
}
.kc-breadcrumb a{color:var(--ink-500);text-decoration:none;transition:color var(--d) var(--ease);}
.kc-breadcrumb a:hover{color:var(--brand-700);}
.kc-breadcrumb .sep{color:var(--ink-300);}

.kc-article-hero h1{
  font-size:clamp(26px,2.6vw,34px);
  line-height:1.28;letter-spacing:-.015em;color:var(--ink-900);
  margin:0 0 16px;max-width:none;width:100%;
}
.kc-article-hero .lead{
  font-size:15px;color:var(--ink-500);line-height:1.65;max-width:none;width:100%;margin:0 0 20px;
  display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden;
}
.kc-article-meta{
  display:flex;align-items:center;gap:16px 24px;flex-wrap:wrap;
  width:100%;padding-top:18px;border-top:1px solid var(--border);
}
.kc-article-meta .kc-meta-items{margin-left:auto;}
.kc-author{display:flex;align-items:center;gap:10px;}
.kc-author .avatar{
  width:40px;height:40px;border-radius:50%;
  background:linear-gradient(135deg,var(--brand-500),var(--brand-700));
  color:#fff;font-size:14px;font-weight:700;display:grid;place-items:center;
}
.kc-author .name{font-size:14px;font-weight:700;color:var(--ink-900);}
.kc-author .title{font-size:12px;color:var(--ink-400);}
.kc-meta-items{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--ink-500);flex-wrap:wrap;}
.kc-meta-items span{display:flex;align-items:center;gap:6px;}
.kc-article-meta .cat{
  font-size:11px;font-weight:700;letter-spacing:.06em;color:var(--brand-700);
  background:var(--brand-50);padding:4px 10px;border-radius:999px;
}

/* 主体两栏布局 */
.kc-article-layout{
  display:grid;
  grid-template-columns:220px 1fr;
  gap:56px;
  padding:48px 0 64px;
  align-items:flex-start;
}
.kc-toc{
  position:sticky;top:calc(var(--header-h) + 24px);
  align-self:flex-start;
}
.kc-toc h4{
  font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--ink-400);
  text-transform:uppercase;margin:0 0 14px;padding-left:14px;
}
.kc-toc ul{list-style:none;margin:0;padding:0;border-left:2px solid var(--border);}
.kc-toc li{margin:0;}
.kc-toc a{
  display:block;padding:6px 14px;margin-left:-2px;border-left:2px solid transparent;
  font-size:13px;color:var(--ink-500);text-decoration:none;line-height:1.5;
  transition:all var(--d) var(--ease);
}
.kc-toc a:hover{color:var(--brand-700);}
.kc-toc a.active{
  color:var(--brand-700);font-weight:600;
  border-left-color:var(--brand-700);background:var(--brand-50);
}
.kc-toc .sub a{padding-left:24px;font-size:12px;}

.kc-toc-share{
  margin-top:28px;padding-top:20px;border-top:1px solid var(--border);
}
.kc-toc-share h4{margin-bottom:12px;}
.kc-share-btns{display:flex;gap:8px;}
.kc-share-btns a{
  width:34px;height:34px;border-radius:8px;border:1px solid var(--border);
  display:grid;place-items:center;font-size:14px;color:var(--ink-500);
  background:#fff;text-decoration:none;transition:all var(--d) var(--ease);
}
.kc-share-btns a:hover{background:var(--brand-50);border-color:var(--brand-300);color:var(--brand-700);}

/* 正文 */
.kc-article-body{
  font-size:17px;color:var(--ink-700);line-height:1.85;max-width:760px;
}
.kc-article-body h2{
  font-size:26px;font-weight:800;letter-spacing:-.015em;color:var(--ink-900);
  margin:48px 0 16px;scroll-margin-top:calc(var(--header-h) + 20px);
}
.kc-article-body h3{
  font-size:20px;font-weight:700;color:var(--ink-900);
  margin:32px 0 12px;scroll-margin-top:calc(var(--header-h) + 20px);
}
.kc-article-body p{margin:0 0 18px;}
.kc-article-body img{
  width:100%;border-radius:12px;margin:24px 0;display:block;
  border:1px solid var(--border);
}
.kc-article-body blockquote{
  margin:24px 0;padding:18px 22px;border-left:4px solid var(--brand-500);
  background:var(--brand-50);border-radius:0 10px 10px 0;color:var(--ink-700);
  font-size:16px;font-style:normal;
}
.kc-article-body blockquote p{margin:0;}
.kc-article-body ul,.kc-article-body ol{margin:0 0 18px;padding-left:24px;}
.kc-article-body li{margin:6px 0;}
.kc-article-body code{
  font-family:var(--font-mono);font-size:14px;
  background:var(--bg-soft);color:var(--brand-700);
  padding:2px 6px;border-radius:4px;border:1px solid var(--border);
}
.kc-article-body pre{
  background:#0F172A;color:#E2E8F0;padding:18px 22px;border-radius:10px;
  overflow-x:auto;margin:24px 0;font-size:14px;line-height:1.6;
}
.kc-article-body pre code{
  background:transparent;color:inherit;padding:0;border:none;font-size:14px;
}
.kc-article-body strong{color:var(--ink-900);font-weight:700;}
.kc-article-body a{color:var(--brand-700);text-decoration:underline;text-decoration-color:var(--brand-200);text-underline-offset:3px;}
.kc-article-body a:hover{text-decoration-color:var(--brand-700);}
.kc-article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:14px;
}
.kc-article-body th,.kc-article-body td{
  padding:10px 14px;border:1px solid var(--border);text-align:left;
}
.kc-article-body th{background:var(--bg-soft);font-weight:700;color:var(--ink-900);}
.kc-article-body tr:nth-child(even) td{background:#FAFBFC;}

/* 文末作者档案（紧凑横排） */
.kc-author-card{
  display:flex;align-items:flex-start;gap:14px;
  margin:28px 0 0;padding:14px 16px;
  border:1px solid var(--border);border-radius:10px;
  background:#fff;width:100%;
}
.kc-author-card__media{
  flex:0 0 56px;width:56px;height:56px;border-radius:50%;overflow:hidden;
  border:1px solid var(--border);background:var(--brand-50);margin-top:2px;
}
.kc-author-card__media img{width:100%;height:100%;object-fit:cover;display:block;}
.kc-author-card__media--initial{
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand-500),var(--brand-700));
  color:#fff;font-size:20px;font-weight:700;border-color:transparent;
}
.kc-author-card__body{flex:1;min-width:0;}
.kc-author-card__eyebrow{
  margin:0 0 2px;font-size:11px;font-weight:600;letter-spacing:.04em;
  color:var(--ink-400);
}
.kc-author-card__name{
  margin:0 0 2px;font-size:17px;font-weight:800;color:var(--ink-900);line-height:1.25;
  display:flex;align-items:baseline;flex-wrap:wrap;gap:0 8px;
}
.kc-author-card__name a{color:inherit;text-decoration:none;}
.kc-author-card__name a:hover{color:var(--brand-700);}
.kc-author-card__title{
  margin:0;font-size:12px;font-weight:500;color:var(--ink-400);line-height:1.35;
}
.kc-author-card__credentials{
  margin:0 0 4px;font-size:12px;color:var(--ink-500);line-height:1.4;
}
.kc-author-card__bio{
  margin:0;font-size:13px;color:var(--ink-600);line-height:1.55;
}
.kc-author-card__links{
  display:flex;flex-wrap:wrap;align-items:center;gap:6px 8px;margin-top:8px;
}
.kc-author-card__links a,
.kc-author-card__wechat{
  font-size:12px;font-weight:600;color:var(--brand-700);text-decoration:none;
  padding:3px 10px;border:1px solid var(--border);border-radius:999px;background:#fff;
  transition:all var(--d) var(--ease);line-height:1.4;
}
.kc-author-card__links a:hover{border-color:var(--brand-300);background:var(--brand-50);}
.kc-author-card__wechat{color:var(--ink-600);font-style:normal;font-weight:600;}
.kc-author-card__wechat em{font-style:normal;color:var(--ink-900);}
@media(max-width:640px){
  .kc-author-card{gap:12px;padding:12px 14px;}
  .kc-author-card__media{flex-basis:48px;width:48px;height:48px;}
  .kc-author-card__media--initial{font-size:18px;}
}

.kc-tags-bottom{
  margin-top:36px;padding-top:24px;border-top:1px solid var(--border);
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
}
.kc-tags-bottom .label{font-size:13px;color:var(--ink-400);font-weight:600;}
.kc-tags-bottom a{
  font-size:13px;color:var(--ink-600);background:#fff;border:1px solid var(--border);
  padding:4px 12px;border-radius:999px;text-decoration:none;
  transition:all var(--d) var(--ease);
}
.kc-tags-bottom a:hover{border-color:var(--brand-300);color:var(--brand-700);background:var(--brand-50);}

/* 底部 CTA + 上下篇 + 相关文章 */
.kc-cta{
  background:linear-gradient(135deg,var(--brand-700),var(--brand-500));
  border-radius:16px;padding:36px 40px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  margin:48px 0;
}
.kc-cta h3{font-size:22px;font-weight:800;margin:0 0 6px;color:#fff;}
.kc-cta p{font-size:14px;color:rgba(255,255,255,.85);margin:0;}
.kc-cta .btn{background:#fff;color:var(--brand-700);border-color:#fff;font-weight:700;}
.kc-cta .btn:hover{background:#F0F4FF;}

.kc-prevnext{
  display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:48px 0;
}
.kc-prevnext a{
  display:flex;flex-direction:column;gap:6px;padding:18px 22px;
  border:1px solid var(--border);border-radius:12px;background:#fff;
  text-decoration:none;color:inherit;transition:all var(--d) var(--ease);
}
.kc-prevnext a:hover{border-color:var(--brand-300);box-shadow:var(--shadow-md);}
.kc-prevnext a.next{text-align:right;}
.kc-prevnext .label{font-size:12px;color:var(--ink-400);font-weight:600;letter-spacing:.06em;}
.kc-prevnext .title{font-size:15px;font-weight:600;color:var(--ink-900);line-height:1.4;}

.kc-related-head{margin:0 0 20px;}
.kc-related-head h2{font-size:22px;font-weight:800;letter-spacing:-.01em;color:var(--ink-900);}
.kc-related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.kc-related-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);
  border-radius:12px;padding:18px;text-decoration:none;color:inherit;
  transition:all var(--d) var(--ease);
}
.kc-related-card:hover{border-color:var(--brand-300);box-shadow:var(--shadow-md);transform:translateY(-2px);}
.kc-related-card .cat{font-size:11px;font-weight:700;color:var(--brand-700);background:var(--brand-50);padding:3px 8px;border-radius:999px;align-self:flex-start;margin-bottom:10px;}
.kc-related-card h3{font-size:15px;font-weight:700;line-height:1.4;color:var(--ink-900);margin:0 0 8px;}
.kc-related-card .meta{font-size:12px;color:var(--ink-400);margin-top:auto;}

@media(max-width:960px){
  .kc-article-layout{grid-template-columns:1fr;gap:24px;}
  .kc-toc{position:static;display:none;}
}
@media(max-width:640px){
  .kc-article-hero{padding:32px 0 24px;}
  .kc-article-hero h1{font-size:clamp(22px,6vw,28px);line-height:1.3;}
  .kc-article-hero .lead{font-size:14px;line-height:1.6;-webkit-line-clamp:3;}
  .kc-article-meta .kc-meta-items{margin-left:0;width:100%;}
  .kc-prevnext{grid-template-columns:1fr;}
  .kc-related-grid{grid-template-columns:1fr;}
  .kc-cta{flex-direction:column;text-align:center;padding:28px 24px;}
}


/* ===== generator extras (detail) ===== */
.kc-breadcrumb{flex-wrap:wrap;}
.kc-author .avatar{overflow:hidden;}
.kc-author .avatar img{width:100%;height:100%;object-fit:cover;}
.kc-toc a.is-active{
  color:var(--brand-700);font-weight:600;
  border-left-color:var(--brand-700);background:var(--brand-50);
}
.kc-toc li.is-sub a,.kc-toc .is-sub a{padding-left:24px;font-size:12px;}
.kc-article-body.article-detail-prose h2,.kc-article-body .article-detail-prose h2,
.article-detail-prose h2{
  font-size:26px;font-weight:800;letter-spacing:-.015em;color:var(--ink-900);
  margin:48px 0 16px;scroll-margin-top:calc(var(--header-h) + 20px);
}
.kc-article-body.article-detail-prose h3,.kc-article-body .article-detail-prose h3,
.article-detail-prose h3{
  font-size:20px;font-weight:700;color:var(--ink-900);
  margin:32px 0 12px;scroll-margin-top:calc(var(--header-h) + 20px);
}
.kc-extras{padding:32px 0 48px;}
.kc-extras h2{font-size:22px;font-weight:800;color:var(--ink-900);margin:0 0 20px;text-align:center;}
.kc-faq details{
  background:#fff;border:1px solid var(--border);border-radius:12px;padding:16px 18px;margin-bottom:12px;max-width:760px;margin-left:auto;margin-right:auto;
}
.kc-faq summary{font-weight:700;color:var(--ink-900);cursor:pointer;}
.kc-faq details p{margin:12px 0 0;color:var(--ink-500);line-height:1.7;}
.kc-overview{max-width:760px;margin:0 auto;font-size:16px;color:var(--ink-700);line-height:1.8;}