/* ═══════════════════════════════════════════════════════════
   zdbzdb 文章页样式（SSR 详情页 /insights/{slug} 与列表页 /insights 专用）
   基础层（reset/:root/body/背景/topbar/nav/footer）与官网各页内联样式一致，
   确保服务端静态生成的导航/页脚与 header.js/footer.js 视觉统一。
   配色沿用锦硕网络深色主题。
   ═══════════════════════════════════════════════════════════ */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg-start:#020617;--bg-2:#0a1628;--bg-3:#0c2347;--bg-4:#061830;
  --brand:#0066ff;--bright:#2dd4ff;--teal:#00d4aa;--green:#34d399;--gold:#f5d08a;--purple:#818cf8;
  --text:#f1f5f9;--text-2:rgba(255,255,255,0.68);--text-3:rgba(255,255,255,0.45);
  --glass:rgba(15,23,42,0.55);--glass-border:rgba(255,255,255,0.1);--radius:16px;
}
html{scroll-behavior:smooth}
body{
  font-family:'Inter','Noto Sans SC',sans-serif;background:linear-gradient(155deg,#020617 0%,#0a1628 30%,#0c2347 65%,#061830 100%);
  color:var(--text);overflow-x:hidden;min-height:100vh;line-height:1.7;
}
a{text-decoration:none;color:inherit}

/* ── 背景层 ── */
.bg-aurora{position:fixed;inset:0;z-index:0;overflow:hidden;pointer-events:none}
.page-bg-mesh{position:absolute;inset:0;
  background:
    radial-gradient(ellipse 600px 500px at 15% 20%,rgba(0,102,255,0.4),transparent 70%),
    radial-gradient(ellipse 500px 400px at 80% 60%,rgba(0,212,170,0.25),transparent 70%),
    radial-gradient(ellipse 400px 300px at 50% 90%,rgba(129,140,248,0.18),transparent 70%);
}
.page-bg-grid{position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,0.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,0.03) 1px,transparent 1px);
  background-size:48px 48px;
  mask:radial-gradient(ellipse 80% 80% at 50% 50%,#000 30%,transparent 100%);
  -webkit-mask:radial-gradient(ellipse 80% 80% at 50% 50%,#000 30%,transparent 100%);
}
.page-bg-orb{position:absolute;border-radius:50%;filter:blur(80px);opacity:0.5;animation:floatOrb 12s ease-in-out infinite}
.page-bg-orb.orb-1{width:400px;height:400px;background:rgba(0,102,255,0.3);top:10%;left:5%}
.page-bg-orb.orb-2{width:350px;height:350px;background:rgba(0,212,170,0.25);top:40%;right:10%;animation-delay:-4s}
.page-bg-orb.orb-3{width:300px;height:300px;background:rgba(129,140,248,0.2);bottom:10%;left:30%;animation-delay:-8s}
@keyframes floatOrb{0%,100%{transform:translate(0,0) scale(1)}33%{transform:translate(40px,-30px) scale(1.1)}66%{transform:translate(-30px,40px) scale(0.95)}}
.content{position:relative;z-index:1}

/* ── Topbar ── */
.topbar{height:36px;background:rgba(2,6,23,0.8);border-bottom:1px solid rgba(255,255,255,0.05);position:relative;z-index:100}
.header-inner{max-width:1280px;margin:0 auto;padding:0 48px;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--text-3)}
.topbar .right{color:var(--teal)}

/* ── Nav ── */
.nav{position:sticky;top:0;z-index:100;background:rgba(15,23,42,0.55);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(255,255,255,0.08)}
.nav-logo{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:700;font-size:18px}
.nav-logo .logo-icon{width:32px;height:32px;border-radius:8px;background:linear-gradient(135deg,var(--brand),var(--teal));display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;color:#fff}
.nav-menu{display:flex;gap:32px;list-style:none}
.nav-menu a{color:var(--text-2);font-size:14px;font-weight:500;padding:4px 0;position:relative;transition:color .3s}
.nav-menu a:hover{color:var(--text)}
.nav-menu a.active{color:var(--teal)}
.nav-menu a.active::after{content:'';position:absolute;bottom:-6px;left:0;width:100%;height:2px;background:linear-gradient(90deg,var(--brand),var(--teal));border-radius:2px}
.nav-cta{padding:10px 22px;background:linear-gradient(135deg,#0066ff 0%,#0052cc 100%);color:#fff;border:none;border-radius:8px;font-size:14px;font-weight:600;transition:transform .2s,box-shadow .2s}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,102,255,0.4)}

/* ── Footer ── */
footer{background:rgba(2,6,23,0.6);border-top:1px solid rgba(255,255,255,0.06);padding:60px 0 30px;margin-top:80px}
.footer-inner{max-width:1280px;margin:0 auto;padding:0 48px}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:40px;margin-bottom:40px}
.footer-brand .nav-logo{margin-bottom:16px}
.footer-brand p{color:var(--text-3);font-size:13px;line-height:1.8}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:16px;color:var(--text)}
.footer-col a{display:block;color:var(--text-3);font-size:13px;padding:4px 0;transition:color .3s}
.footer-col a:hover{color:var(--teal)}
.footer-col p{color:var(--text-3);font-size:13px;padding:2px 0}
.footer-bottom{padding-top:24px;border-top:1px solid rgba(255,255,255,0.06);text-align:center;color:var(--text-3);font-size:12px}
.footer-bottom a{color:var(--text-3);transition:color .3s}
.footer-bottom a:hover{color:var(--teal)}
.footer-qr{width:80px;height:80px;border-radius:8px;margin-top:12px;object-fit:contain}

/* ══════════════ 文章详情页 ══════════════ */
.article-main{max-width:860px;margin:0 auto;padding:56px 24px 40px;position:relative;z-index:1}
.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--text-3);margin-bottom:24px}
.breadcrumb a{color:var(--text-3);transition:color .3s}
.breadcrumb a:hover{color:var(--teal)}
.breadcrumb .sep{opacity:0.5}
.article-head h1{font-size:38px;font-weight:800;line-height:1.3;margin-bottom:20px;letter-spacing:-0.5px}
.article-metas{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:32px;padding-bottom:24px;border-bottom:1px solid rgba(255,255,255,0.08)}
.meta-tag{padding:4px 14px;border-radius:16px;background:rgba(0,212,170,0.1);border:1px solid rgba(0,212,170,0.2);color:var(--teal);font-size:12px;font-weight:600}
.meta-item{font-size:13px;color:var(--text-3)}
.article-cover{width:100%;border-radius:16px;margin-bottom:32px;box-shadow:0 8px 32px rgba(0,0,0,0.35)}
.article-summary{background:var(--glass);border:1px solid var(--glass-border);border-left:4px solid var(--teal);border-radius:12px;padding:20px 24px;font-size:15px;color:var(--text-2);margin-bottom:36px;line-height:1.85}

/* 标签 */
.article-tags{display:flex;gap:10px;flex-wrap:wrap;margin:40px 0}
.article-tags .tag{padding:5px 14px;border-radius:16px;background:rgba(0,102,255,0.1);border:1px solid rgba(0,102,255,0.2);color:var(--bright);font-size:12px;font-weight:500}

/* 相关阅读 */
.related{margin-top:56px}
.related h2{font-size:22px;font-weight:700;margin-bottom:24px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.related-card{display:block;padding:24px;background:var(--glass);border:1px solid var(--glass-border);border-radius:14px;transition:transform .3s,border-color .3s}
.related-card:hover{transform:translateY(-4px);border-color:rgba(0,212,170,0.28)}
.related-card .rc-meta{font-size:12px;color:var(--text-3);margin-bottom:10px}
.related-card h3{font-size:15px;font-weight:600;line-height:1.5;margin-bottom:8px;color:var(--text)}
.related-card p{font-size:13px;color:var(--text-3);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* 空态 */
.article-empty{text-align:center;padding:80px 0;color:var(--text-3)}
.article-empty h2{font-size:24px;margin-bottom:12px;color:var(--text-2)}

/* ══════════════ 文章列表页 /insights ══════════════ */
.insights-hero{max-width:1280px;margin:0 auto;padding:64px 48px 24px;text-align:center}
.insights-hero h1{font-size:40px;font-weight:800;margin-bottom:14px;background:linear-gradient(135deg,#2dd4ff 0%,#00d4aa 50%,#818cf8 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.insights-hero p{color:var(--text-2);font-size:16px}
.insights-grid{max-width:1280px;margin:0 auto;padding:32px 48px 60px;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.insight-card{display:block;padding:28px;background:var(--glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--glass-border);border-radius:16px;transition:transform .3s,border-color .3s,box-shadow .3s}
.insight-card:hover{transform:translateY(-4px);border-color:rgba(0,212,170,0.28);box-shadow:0 8px 32px rgba(0,212,170,0.12)}
.insight-card .ic-meta{font-size:12px;color:var(--teal);margin-bottom:12px;font-weight:600}
.insight-card h2{font-size:18px;font-weight:700;line-height:1.45;margin-bottom:10px;color:var(--text)}
.insight-card p{font-size:14px;color:var(--text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.insight-card .ic-more{display:inline-block;margin-top:16px;font-size:13px;color:var(--bright);font-weight:600}
.insights-empty{grid-column:1/-1;text-align:center;padding:60px 0;color:var(--text-3)}

/* ══════════════ Markdown 正文（深色主题） ══════════════ */
.article-body{font-size:16px;line-height:1.9;color:var(--text-2)}
.article-body>*{margin-bottom:1.4em}
.article-body h1,.article-body h2,.article-body h3,.article-body h4{color:var(--text);font-weight:700;line-height:1.35;margin:1.8em 0 0.8em}
.article-body h1{font-size:28px}
.article-body h2{font-size:24px;padding-bottom:10px;border-bottom:1px solid rgba(255,255,255,0.08)}
.article-body h3{font-size:20px}
.article-body h4{font-size:17px}
.article-body p{margin-bottom:1.4em}
.article-body a{color:var(--bright);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--teal)}
.article-body strong{color:var(--text);font-weight:700}
.article-body em{font-style:italic}
.article-body ul,.article-body ol{margin:0 0 1.4em 1.5em}
.article-body li{margin-bottom:0.5em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body blockquote{border-left:4px solid var(--teal);background:rgba(0,212,170,0.06);padding:14px 20px;margin:1.4em 0;border-radius:0 10px 10px 0;color:var(--text-2)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body code{font-family:'SFMono-Regular',Consolas,'Liberation Mono',Menlo,monospace;font-size:0.88em;background:rgba(255,255,255,0.08);padding:2px 6px;border-radius:5px;color:var(--bright)}
.article-body pre{background:rgba(2,6,23,0.7);border:1px solid var(--glass-border);border-radius:12px;padding:18px 20px;overflow-x:auto;margin:1.4em 0}
.article-body pre code{background:none;padding:0;color:var(--text);font-size:13.5px;line-height:1.7}
.article-body img{max-width:100%;border-radius:12px;margin:1.4em 0;box-shadow:0 8px 24px rgba(0,0,0,0.3)}
.article-body hr{border:none;border-top:1px solid rgba(255,255,255,0.1);margin:2em 0}
.article-body table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:14.5px;display:block;overflow-x:auto}
.article-body th,.article-body td{border:1px solid rgba(255,255,255,0.12);padding:10px 14px;text-align:left}
.article-body th{background:rgba(0,102,255,0.12);color:var(--text);font-weight:600}
.article-body tr:nth-child(even) td{background:rgba(255,255,255,0.02)}

/* ── 响应式 ── */
@media(max-width:1024px){
  .related-grid,.insights-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .topbar{display:none}
  .header-inner{padding:0 20px}
  .nav{padding:12px 0}
  .nav-menu{display:none}
  .article-main{padding:40px 20px}
  .article-head h1{font-size:26px}
  .insights-hero{padding:48px 20px 16px}
  .insights-hero h1{font-size:30px}
  .insights-grid{padding:24px 20px 40px;grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-inner{padding:0 20px}
  .article-body{font-size:15px}
  .article-body h2{font-size:21px}
  .article-body h3{font-size:18px}
}