/* ==========================================================================
   AegisX · SEO/GEO 通用样式表（SSR 资讯列表 + 文章详情）
   独立外链文件，可被浏览器/CDN 长缓存；所有 SSR 页面共用
   ========================================================================== */

/* ---------- reset / base ---------- */
*{box-sizing:border-box;margin:0;padding:0}
html{
  -webkit-text-size-adjust:100%;
  -moz-text-size-adjust:100%;
  text-size-adjust:100%;
  scroll-behavior:smooth;
}
:root{
  --brand:#0ea5e9;--brand2:#2563eb;--brand-deep:#0369a1;
  --bg:#f3f6fb;--bg2:#eaf0f8;--card:#ffffff;
  --line:#e4eaf3;--line2:#d3dcea;
  --t:#111f33;--t2:#55648a;--t3:#93a0b5;
  --max:1440px;
}
body{
  background:var(--bg);
  color:var(--t);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--max);margin:0 auto;padding:0 28px}

/* ---------- header（深色玻璃，与首页一致） ---------- */
.ax-hdr{position:sticky;top:0;z-index:60;background:rgba(8,13,25,.92);border-bottom:1px solid rgba(255,255,255,.07)}
@supports ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .ax-hdr{background:rgba(8,13,25,.84);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}
}
.ax-hdr-in{max-width:var(--max);margin:0 auto;height:68px;padding:0 28px;display:flex;align-items:center;gap:26px}
.ax-brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:21px;letter-spacing:.3px;white-space:nowrap;color:#fff}
.ax-brand-img{width:30px;height:30px;border-radius:8px;flex:0 0 auto}
.ax-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.ax-link{padding:8px 13px;border-radius:9px;font-size:15px;color:#aab8cf;transition:color .18s,background-color .18s;white-space:nowrap}
.ax-link i{font-style:normal;font-size:10px;opacity:.7}
.ax-link:hover,.ax-link.is-active{color:#fff;background:rgba(255,255,255,.07)}
.ax-link.is-active{color:#38e0ff}
.ax-dd{position:relative}
.ax-dd-menu{position:absolute;top:calc(100% + 10px);left:0;min-width:210px;background:#0c1424;border:1px solid rgba(255,255,255,.09);border-radius:14px;padding:8px;display:none;box-shadow:0 24px 50px rgba(0,0,0,.55)}
.ax-dd:hover .ax-dd-menu,.ax-dd:focus-within .ax-dd-menu{display:block}
.ax-dd-menu a{display:block;padding:9px 12px;border-radius:9px;font-size:14px;color:#aab8cf}
.ax-dd-menu a:hover{background:rgba(14,165,233,.14);color:#38e0ff}
.ax-cta{background:linear-gradient(135deg,#22d3ee,#2f7bff);color:#fff;font-weight:700;padding:10px 20px;border-radius:10px;font-size:14.5px;white-space:nowrap;box-shadow:0 6px 18px rgba(20,130,230,.35)}
.ax-cta:hover{filter:brightness(1.08)}
.ax-burger{display:none;background:none;border:0;color:#fff;font-size:24px;margin-left:auto;cursor:pointer}

/* ---------- hero / breadcrumb ---------- */
.ax-page-hero{padding:38px 0 22px}
.crumb{font-size:13.5px;color:var(--t3);margin-bottom:16px}
.crumb a{color:var(--t2)}
.crumb a:hover{color:var(--brand)}
.ax-page-hero h1{font-size:34px;font-weight:800;letter-spacing:.5px;color:var(--t)}
.ax-page-hero .lead{color:var(--t2);margin-top:10px;max-width:820px}

/* ---------- search ---------- */
.ax-search{display:flex;gap:10px;margin:4px 0 22px}
.ax-search input{
  flex:1;min-width:0;background:#fff;border:1px solid var(--line2);border-radius:11px;
  padding:12px 16px;color:var(--t);font-size:14.5px;box-shadow:0 2px 8px rgba(20,45,90,.04);
  -webkit-appearance:none;-moz-appearance:none;appearance:none;
}
.ax-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(14,165,233,.15)}
.ax-search button{
  background:linear-gradient(135deg,#22d3ee,#2f7bff);color:#fff;font-weight:700;border:0;border-radius:11px;
  padding:0 26px;cursor:pointer;font-size:15px;
  -webkit-appearance:none;-moz-appearance:none;appearance:none;
}
.ax-search button:hover{filter:brightness(1.07)}

/* ---------- category chips ---------- */
.ax-chips{display:flex;gap:10px;flex-wrap:wrap;margin:2px 0 24px}
.ax-chip{padding:7px 17px;border-radius:999px;border:1px solid var(--line2);background:#fff;color:var(--t2);font-size:14px;transition:border-color .18s,color .18s}
.ax-chip:hover{border-color:var(--brand);color:var(--brand)}
.ax-chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff}
.ax-count-line{color:var(--t3);font-size:13.5px;margin-bottom:18px}
.ax-pager-gap{margin:0}

/* ---------- post cards（封面全宽置顶，16:9 不拉伸） ---------- */
.post-list{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.post-card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:transform .22s,border-color .22s,box-shadow .22s}
.post-card:hover{transform:translateY(-4px);border-color:#cfdcea;box-shadow:0 20px 46px rgba(19,44,80,.12)}
.pc-cover{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;background:#0a1626}
.pc-body{padding:20px 22px 22px;min-width:0;display:flex;flex-direction:column}
.pc-cat{font-size:12px;color:var(--brand-deep);font-weight:600}
.pc-title{font-size:18px;font-weight:700;line-height:1.45;margin:6px 0 8px;color:var(--t);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card:hover .pc-title{color:var(--brand-deep)}
.pc-ex{color:var(--t2);font-size:13.5px;line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pc-meta{margin-top:14px;padding-top:12px;border-top:1px solid var(--line);font-size:12.5px;color:var(--t3);display:flex;gap:14px;flex-wrap:wrap}

/* ---------- pager ---------- */
.pager{display:flex;gap:8px;justify-content:center;margin:44px 0 10px;flex-wrap:wrap}
.pager a{min-width:42px;height:42px;padding:0 13px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line2);border-radius:11px;background:#fff;color:var(--t2);font-size:14px}
.pager a:hover{border-color:var(--brand);color:var(--brand)}
.pager a.is-active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:700}
.pager a.is-disabled{opacity:.4;pointer-events:none}

/* ---------- article detail ---------- */
.ax-article{padding:30px 0 20px}
.ax-article-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:34px;align-items:start}
.ax-article-grid>*{min-width:0}
.ax-main-col{background:#fff;border:1px solid var(--line);border-radius:18px;padding:46px 50px;box-shadow:0 4px 22px rgba(20,45,90,.05)}
.ax-title{font-size:32px;line-height:1.35;font-weight:800;letter-spacing:.4px;color:var(--t)}
.ax-ameta{display:flex;gap:16px;flex-wrap:wrap;color:var(--t3);font-size:13.5px;margin:18px 0 26px;align-items:center}
.ax-ameta .cat{color:var(--brand-deep);font-weight:600;background:#eef7fd;border-radius:6px;padding:2px 10px}
.ax-cover{width:100%;border-radius:14px;margin-bottom:8px}
.ax-cover-cap{color:var(--t3);font-size:13px;text-align:center;margin-bottom:28px}
.article-body{font-size:16.5px;color:#2b3a52}
.article-body>*{margin-bottom:20px}
.article-body h2{font-size:24px;font-weight:800;margin:40px 0 16px;padding-left:14px;border-left:4px solid var(--brand);color:#0e1b30}
.article-body h3{font-size:19.5px;font-weight:700;margin:28px 0 12px;color:#1a2b45}
.article-body p{line-height:1.95}
.article-body a{color:var(--brand-deep);border-bottom:1px solid rgba(3,105,161,.35)}
.article-body a:hover{border-bottom-color:var(--brand-deep)}
.article-body ul,.article-body ol{padding-left:24px}
.article-body li{margin-bottom:9px}
.article-body strong{color:#0e1b30}
.article-body code{background:#edf3fb;border:1px solid #dbe7f4;border-radius:6px;padding:2px 7px;font-size:14px;color:#0c5fa6;font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace}
.article-body pre{background:#0c1626;border:0;border-radius:12px;padding:18px 20px;overflow-x:auto}
.article-body pre code{background:none;border:0;padding:0;color:#c8d6e8}
.article-body blockquote{border-left:4px solid var(--brand);background:#f0f9ff;padding:14px 18px;border-radius:0 10px 10px 0;color:var(--t2)}
.article-body table{width:100%;border-collapse:collapse;font-size:14.5px;display:block;overflow-x:auto;max-width:100%}
.article-body th,.article-body td{border:1px solid var(--line2);padding:10px 13px;text-align:left}
.article-body th{background:#f4f8fd;color:#1a2b45}
.ax-fig{margin:28px 0}
.ax-fig img{width:100%;border-radius:14px;border:1px solid var(--line)}
.ax-fig figcaption{color:var(--t3);font-size:13px;text-align:center;margin-top:9px}

/* TL;DR（AI 摘要友好） */
.ax-tldr{background:linear-gradient(180deg,#f0faff,#f8fdff);border:1px solid #c4eef8;border-radius:14px;padding:20px 22px;margin-bottom:28px}
.ax-tldr h2{border:0;padding:0;font-size:18px;margin:0 0 10px;color:var(--brand-deep)}
.ax-tldr ul{padding-left:20px}
.ax-tldr li{margin-bottom:7px;font-size:15px;color:#1d3a5f}

/* tags / prev-next */
.ax-tags{display:flex;gap:9px;flex-wrap:wrap;margin:36px 0 8px}
.ax-tags a{font-size:13px;color:var(--t2);border:1px solid var(--line2);border-radius:999px;padding:5px 14px;background:#fff}
.ax-tags a:hover{border-color:var(--brand);color:var(--brand)}
.ax-pn{display:flex;gap:14px;justify-content:space-between;margin:32px 0 6px;border-top:1px solid var(--line);padding-top:24px}
.ax-pn a{color:var(--t2);font-size:14px;max-width:48%}
.ax-pn a.next{text-align:right}
.ax-pn a:hover{color:var(--brand-deep)}
.ax-pn .lbl{display:block;font-size:12px;color:var(--t3)}

/* sidebar */
.ax-side{position:sticky;top:88px;display:flex;flex-direction:column;gap:22px}
.ax-side>*{min-width:0}
.ax-side-card{background:#fff;border:1px solid var(--line);border-radius:15px;padding:20px;box-shadow:0 3px 14px rgba(20,45,90,.04)}
.ax-side-card h4{font-size:15.5px;margin-bottom:14px;color:var(--t)}
.ax-side-card--cta{background:linear-gradient(180deg,rgba(0,212,255,.1),rgba(0,212,255,.03))}
.ax-cta-note{color:var(--t2);font-size:13.5px;margin-bottom:14px}
.ax-rel{display:flex;flex-direction:column;gap:14px}
.ax-rel a{font-size:13.5px;color:var(--t2);line-height:1.55}
.ax-rel a:hover{color:var(--brand-deep)}
.ax-rel span{display:block;color:var(--t3);font-size:11.5px;margin-top:2px}
.ax-side-empty{color:var(--t3);font-size:13px}
.ax-side-card ul{list-style:none;display:flex;flex-direction:column;gap:11px}
.ax-side-cats a{font-size:14px;color:var(--t2)}
.ax-side-cats a:hover{color:var(--brand-deep)}
.ax-side-card .ax-cta{display:inline-block;margin-top:2px}

/* ---------- footer（深色，与首页一致） ---------- */
.ax-ftr{border-top:1px solid rgba(255,255,255,.07);background:#070b15;margin-top:64px}
.ax-ftr-in{max-width:var(--max);margin:0 auto;padding:50px 28px 32px;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:34px}
.ax-ftr-brand{font-weight:800;font-size:19px;color:#fff;display:flex;flex-wrap:wrap;align-items:center}
.ax-ftr-brand .ax-brand-img{width:28px;height:28px;margin-right:8px;border-radius:7px}
.ax-ftr-brand p{flex-basis:100%;color:var(--t3);font-size:13.5px;font-weight:400;margin-top:14px;max-width:350px;line-height:1.8}
.ax-ftr-col h5{font-size:14px;color:#fff;margin-bottom:14px}
.ax-ftr-col a{display:block;color:var(--t3);font-size:13.5px;margin-bottom:10px}
.ax-ftr-col a:hover{color:#38e0ff}
.ax-ftr-bot{border-top:1px solid rgba(255,255,255,.07);padding:18px 28px;text-align:center;color:var(--t3);font-size:12.5px;max-width:none}

/* ---------- empty ---------- */
.ax-empty{text-align:center;padding:80px 0;color:var(--t2);background:#fff;border:1px solid var(--line);border-radius:16px;margin-bottom:30px}
.ax-empty .ico{font-size:46px;margin-bottom:14px}
.ax-empty-more{margin-top:14px}

/* ---------- responsive：平板 / 手机 / 窄屏 ---------- */
@media (max-width:1100px){
  .ax-article-grid{grid-template-columns:1fr}
  .ax-side{position:static;display:grid;grid-template-columns:1fr 1fr;gap:18px}
}
@media (max-width:860px){
  .container,.ax-hdr-in,.ax-ftr-in{padding-left:18px;padding-right:18px}
  .post-list{grid-template-columns:1fr}
  .ax-burger{display:block}
  .ax-hdr .ax-cta{display:none}
  .ax-nav{position:fixed;inset:68px 0 auto 0;flex-direction:column;align-items:stretch;background:#0a1120;border-bottom:1px solid rgba(255,255,255,.08);padding:12px 18px;display:none;margin:0}
  body.ax-nav-open .ax-nav{display:flex}
  .ax-dd-menu{position:static;display:block;background:none;border:0;box-shadow:none;padding:0 0 0 14px}
  .ax-title{font-size:26px}
  .ax-main-col{padding:30px 24px}
  .ax-ftr-in{grid-template-columns:1fr 1fr}
}
@media (max-width:620px){
  .ax-side{grid-template-columns:1fr}
  .ax-ftr-in{grid-template-columns:1fr}
  .ax-main-col{padding:26px 18px;border-radius:14px}
  .ax-page-hero h1{font-size:27px}
  .ax-search{flex-direction:column}
  .ax-search button{padding:12px 0}
}

/* ---------- 减弱动效：尊重系统偏好（可访问性） ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
}