/* ============================================================
   东十盟资讯门户 —— 前端样式（科技蓝 · 响应式 · 动效）
   ============================================================ */
:root{
  --c-primary:#2563EB;
  --c-primary-d:#1d4ed8;
  --c-accent:#7C3AED;
  --c-ink:#0f172a;
  --c-body:#334155;
  --c-muted:#64748b;
  --c-line:#e2e8f0;
  --c-bg:#f6f8fb;
  --c-card:#ffffff;
  --c-soft:#eef2ff;
  --radius:16px;
  --radius-sm:10px;
  --shadow-sm:0 1px 3px rgba(15,23,42,.06),0 1px 2px rgba(15,23,42,.04);
  --shadow-md:0 8px 24px rgba(15,23,42,.08);
  --shadow-lg:0 18px 48px rgba(37,99,235,.16);
  --maxw:1180px;
  --header-h:64px;
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --serif:"Noto Serif SC","Source Han Serif SC",Georgia,"Songti SC",serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);color:var(--c-body);background:var(--c-bg);line-height:1.7;font-size:16px;overflow-x:hidden}
a{color:inherit;text-decoration:none;transition:color .2s}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.muted{color:var(--c-muted)}
.small{font-size:.85rem}
.dot{color:var(--c-line);margin:0 6px}

/* ---------- 头部 ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--c-line);transition:box-shadow .25s,transform .3s}
.site-header.scrolled{box-shadow:var(--shadow-sm)}
.header-inner{display:flex;align-items:center;gap:18px;height:var(--header-h)}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--c-ink);font-size:1.15rem;white-space:nowrap}
.brand-logo{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--c-primary),var(--c-accent));color:#fff;display:grid;place-items:center;font-weight:800;font-size:1.1rem;box-shadow:var(--shadow-sm)}
.site-nav{display:flex;gap:6px;margin-left:8px}
.nav-link{padding:8px 12px;border-radius:999px;color:var(--c-muted);font-weight:600;font-size:.95rem;position:relative}
.nav-link:hover{color:var(--c-primary);background:var(--c-soft)}
.nav-link.active{color:#fff;background:linear-gradient(135deg,var(--c-primary),var(--c-primary-d))}
.search-box{margin-left:auto;display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--c-line);border-radius:999px;padding:7px 14px;min-width:200px;transition:border-color .2s,box-shadow .2s}
.search-box:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(37,99,235,.14)}
.search-ico{width:18px;height:18px;color:var(--c-muted);flex:none}
.search-box input{border:0;outline:0;background:transparent;flex:1;font-size:.92rem;color:var(--c-ink)}
.nav-toggle{display:none;margin-left:auto;background:none;border:0;font-size:1.4rem;color:var(--c-ink);cursor:pointer}

/* ---------- Hero ---------- */
.hero{position:relative;padding:72px 0 56px;background:
  radial-gradient(1200px 400px at 80% -10%,rgba(124,58,237,.12),transparent),
  radial-gradient(900px 360px at 0% 0%,rgba(37,99,235,.14),transparent);
  overflow:hidden}
.hero-inner{text-align:center;max-width:760px;margin:0 auto}
.hero-kicker{display:inline-block;font-weight:700;color:var(--c-primary);background:var(--c-soft);padding:6px 14px;border-radius:999px;font-size:.85rem;letter-spacing:.5px;margin-bottom:18px}
.hero-title{font-size:clamp(2rem,5vw,3.4rem);line-height:1.15;font-weight:900;color:var(--c-ink);letter-spacing:-.5px}
.hero-sub{margin-top:18px;font-size:clamp(1rem,2vw,1.18rem);color:var(--c-muted);max-width:640px;margin-left:auto;margin-right:auto}

/* ---------- 区块 ---------- */
.section{padding:48px 0}
.section-title{font-size:clamp(1.3rem,3vw,1.7rem);font-weight:800;color:var(--c-ink);margin-bottom:22px;position:relative;padding-left:14px}
.section-title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:5px;border-radius:4px;background:linear-gradient(180deg,var(--c-primary),var(--c-accent))}
.page-h{font-size:clamp(1.6rem,4vw,2.4rem);font-weight:900;color:var(--c-ink);margin-bottom:8px}
.page-sub{color:var(--c-muted);margin-bottom:26px}
.two-col{display:grid;grid-template-columns:1fr 300px;gap:40px;align-items:start}
.col-main{min-width:0}
.narrow{max-width:760px}

/* ---------- 网格与卡片 ---------- */
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.post-card{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .28s cubic-bezier(.2,.7,.3,1),box-shadow .28s;display:flex;flex-direction:column}
.post-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.card-cover{aspect-ratio:16/9;background:linear-gradient(135deg,#e0e7ff,#ede9fe);overflow:hidden}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.post-card:hover .card-cover img{transform:scale(1.05)}
.card-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-tags{display:flex;flex-wrap:wrap;gap:6px}
.chip{display:inline-block;font-size:.74rem;font-weight:700;color:var(--c-primary);background:var(--c-soft);padding:3px 10px;border-radius:999px}
.card-title{font-size:1.12rem;font-weight:800;line-height:1.4;color:var(--c-ink)}
.card-title a:hover{color:var(--c-primary)}
.card-summary{color:var(--c-muted);font-size:.92rem;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:auto;display:flex;align-items:center;flex-wrap:wrap;font-size:.8rem;color:var(--c-muted)}

/* ---------- 侧栏 ---------- */
.sidebar{display:flex;flex-direction:column;gap:22px;position:sticky;top:calc(var(--header-h) + 16px)}
.widget{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow-sm)}
.widget-title{font-size:1rem;font-weight:800;color:var(--c-ink);margin-bottom:14px}
.cat-list{list-style:none;display:flex;flex-direction:column;gap:2px}
.cat-list a{display:flex;justify-content:space-between;padding:9px 12px;border-radius:var(--radius-sm);color:var(--c-body);font-weight:600;font-size:.94rem}
.cat-list a:hover{background:var(--c-soft);color:var(--c-primary)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-chip{display:inline-block;font-size:.82rem;color:var(--c-body);background:var(--c-bg);border:1px solid var(--c-line);padding:5px 12px;border-radius:999px;transition:.2s}
.tag-chip:hover{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}
.widget-cta{background:linear-gradient(135deg,var(--c-primary),var(--c-accent));color:#fff;border:0}
.widget-cta .widget-title{color:#fff}
.widget-cta .muted{color:rgba(255,255,255,.85)}

/* ---------- 文章详情 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:.85rem;color:var(--c-muted);padding-top:22px}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .current{color:var(--c-ink);font-weight:600}
.article-head{max-width:820px;padding:18px 20px 0}
.article-title{font-size:clamp(1.6rem,4vw,2.5rem);line-height:1.25;font-weight:900;color:var(--c-ink);margin:12px 0 14px;letter-spacing:-.5px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;font-size:.88rem;color:var(--c-muted)}
.article-cover{max-width:var(--maxw);margin:18px auto 0;padding:0 20px}
.article-cover img{border-radius:var(--radius);box-shadow:var(--shadow-md);width:100%}
.article-body-wrap{max-width:var(--maxw);margin-top:26px}
.article-content{max-width:760px;font-family:var(--serif);font-size:1.06rem;color:#1f2937;line-height:1.95}
.article-content h2{font-family:var(--font);font-size:1.5rem;font-weight:800;color:var(--c-ink);margin:38px 0 14px;padding-top:8px;scroll-margin-top:90px}
.article-content h3{font-family:var(--font);font-size:1.22rem;font-weight:800;color:var(--c-ink);margin:28px 0 12px;scroll-margin-top:90px}
.article-content p{margin:16px 0}
.article-content ul,.article-content ol{margin:16px 0;padding-left:1.5em}
.article-content li{margin:8px 0}
.article-content a{color:var(--c-primary);border-bottom:1px solid rgba(37,99,235,.3)}
.article-content blockquote{margin:20px 0;padding:14px 20px;border-left:4px solid var(--c-primary);background:var(--c-soft);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--c-body)}
.article-content code{font-family:"SF Mono",Consolas,Menlo,monospace;font-size:.88em;background:#f1f5f9;padding:2px 6px;border-radius:6px;color:#be123c}
.article-content pre{background:#0f172a;color:#e2e8f0;padding:18px;border-radius:var(--radius-sm);overflow:auto;margin:18px 0;font-size:.88rem;line-height:1.6}
.article-content pre code{background:none;color:inherit;padding:0}
.article-content img{max-width:100%;border-radius:var(--radius-sm);margin:18px 0;box-shadow:var(--shadow-sm)}
.article-content table{border-collapse:collapse;width:100%;margin:18px 0;font-size:.92rem;font-family:var(--font)}
.article-content th,.article-content td{border:1px solid var(--c-line);padding:10px 12px;text-align:left}
.article-content th{background:var(--c-soft);font-family:var(--font)}
.article-content hr{border:0;border-top:1px solid var(--c-line);margin:28px 0}
.article-tags{margin-top:28px;display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-family:var(--font)}
.toc-widget .toc{display:flex;flex-direction:column;gap:6px;font-size:.9rem}
.toc-widget .toc a{color:var(--c-body);padding:4px 0;border-left:2px solid transparent;padding-left:10px}
.toc-widget .toc a:hover,.toc-widget .toc a.active{color:var(--c-primary);border-left-color:var(--c-primary)}

/* ---------- 按钮 / 分页 / 加载更多 ---------- */
.btn-primary{display:inline-block;background:linear-gradient(135deg,var(--c-primary),var(--c-primary-d));color:#fff;font-weight:700;padding:11px 22px;border-radius:999px;border:0;cursor:pointer;box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .2s;font-size:.95rem}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-load{display:block;width:100%;max-width:240px;margin:30px auto 0;background:#fff;border:1px solid var(--c-line);color:var(--c-primary);font-weight:700;padding:12px;border-radius:999px;cursor:pointer;transition:.2s}
.btn-load:hover{background:var(--c-soft);border-color:var(--c-primary)}
.btn-load:disabled{opacity:.5;cursor:not-allowed}
.pager{display:flex;align-items:center;justify-content:center;gap:18px;margin-top:30px;font-family:var(--font)}
.pager-btn{font-weight:700;color:var(--c-primary);padding:9px 18px;border:1px solid var(--c-line);border-radius:999px;transition:.2s}
.pager-btn:hover{background:var(--c-soft)}
.pager-btn.disabled{color:var(--c-muted);cursor:not-allowed;opacity:.6}
.pager-info{color:var(--c-muted);font-size:.9rem}

/* ---------- 空状态 / 404 ---------- */
.empty-state{text-align:center;padding:60px 20px;color:var(--c-muted);border:1px dashed var(--c-line);border-radius:var(--radius);background:#fff}
.empty-ico{font-size:2.6rem;margin-bottom:10px}
.empty-page{text-align:center;padding:80px 20px}
.big-404{font-size:5rem;font-weight:900;color:var(--c-primary);line-height:1}
.empty-page .muted{margin:14px 0 24px}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:60px;background:#0f172a;color:#cbd5e1;padding:48px 0 26px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}
.site-footer .brand{color:#fff;margin-bottom:12px}
.site-footer .brand-logo{background:linear-gradient(135deg,var(--c-primary),var(--c-accent))}
.footer-slogan{color:#94a3b8;max-width:320px}
.footer-col h4{color:#fff;font-size:.98rem;margin-bottom:14px}
.footer-col a{display:block;color:#94a3b8;padding:5px 0;font-size:.92rem}
.footer-col a:hover{color:#fff}
.footer-bottom{display:flex;flex-wrap:wrap;gap:16px;align-items:center;border-top:1px solid rgba(255,255,255,.08);margin-top:34px;padding-top:20px;font-size:.85rem;color:#94a3b8}
.footer-bottom a:hover{color:#fff}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
@keyframes shimmer{0%{background-position:-400px 0}100%{background-position:400px 0}}
.skeleton{background:linear-gradient(90deg,#eef2f7 25%,#e2e8f0 37%,#eef2f7 63%);background-size:800px 100%;animation:shimmer 1.4s infinite;border-radius:8px}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* ---------- 响应式 ---------- */
@media (max-width:980px){
  .two-col{grid-template-columns:1fr;gap:28px}
  .sidebar{position:static;flex-direction:row;flex-wrap:wrap}
  .sidebar .widget{flex:1;min-width:240px}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  :root{--header-h:56px}
  .site-nav,.search-box{display:none}
  .nav-toggle{display:block}
  .site-nav.open{display:flex;position:absolute;top:var(--header-h);left:0;right:0;flex-direction:column;background:#fff;border-bottom:1px solid var(--c-line);padding:10px 16px;gap:4px;box-shadow:var(--shadow-md)}
  .site-nav.open .nav-link{width:100%}
  .grid-2,.grid-3{grid-template-columns:1fr}
  .hero{padding:48px 0 36px}
  .section{padding:34px 0}
  .footer-grid{grid-template-columns:1fr}
  .article-content{font-size:1rem}
}