/* 挖需求 · 公安联网备案审查版（个人非经营性网站，纯静态无交互） */
:root{
  --bg:#f6f8fc;--card:#ffffff;--line:#e3e9f4;--sub:#64748b;
  --acc:#2563eb;--acc2:#1d4ed8;--chipbg:rgba(37,99,235,.08);
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:#1e293b;line-height:1.7}
.wrap{max-width:900px;margin:0 auto;padding:0 22px}
a{color:var(--acc);text-decoration:none}
a:hover{text-decoration:underline}

/* 顶栏 */
.topbar{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:9}
.topbar-in{display:flex;align-items:center;gap:20px;height:58px}
.brand{display:flex;align-items:center;gap:8px;font-weight:800;font-size:16px;color:#1e293b}
.brand img{width:24px;height:24px;border-radius:6px}
.brand:hover{text-decoration:none}
.topbar nav{display:flex;gap:24px}
.topbar nav a{display:inline-block;position:relative;color:var(--sub);font-weight:600;
  font-size:14.5px;padding:4px 2px;transition:color .25s ease}
.topbar nav a::after{content:"";position:absolute;left:0;bottom:-3px;height:2.5px;width:100%;
  border-radius:2px;background:linear-gradient(90deg,var(--acc),#60a5fa);
  transform:scaleX(0);transform-origin:left;
  transition:transform .34s cubic-bezier(.22,.61,.36,1)}
.topbar nav a:hover{color:var(--acc)}
.topbar nav a:hover::after{transform:scaleX(1)}
.topbar nav a.on{color:var(--acc)}
.topbar nav a.on::after{transform:scaleX(1)}
.grow{flex:1}

/* 首页 */
.hero{text-align:center;padding:52px 10px 8px}
.hero h1{font-size:clamp(26px,4vw,32px);font-weight:800;letter-spacing:-.01em}
.hero .sub{margin:8px 0 0;color:var(--sub);font-size:14px}
.position-box{margin:24px auto 0;max-width:720px;background:var(--card);border:1px solid var(--line);
  border-left:4px solid var(--acc);border-radius:12px;padding:18px 22px;font-size:14.5px;line-height:1.9}
.position-box b{color:var(--acc)}
.intro{max-width:720px;margin:22px auto 0;font-size:14px;color:var(--sub);line-height:1.9;text-align:center}
.cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin-top:26px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px}
.card h2{font-size:15px;font-weight:800;margin-bottom:8px}
.card h2 span{color:var(--acc);margin-right:6px}
.card p{font-size:13.2px;line-height:1.85;color:var(--sub)}
.go{text-align:center;margin-top:26px}

/* 文章页 */
.page-title{text-align:center;padding:44px 10px 4px}
.page-title h1{font-size:24px;font-weight:800}
.page-title p{color:var(--sub);font-size:13.5px;margin-top:6px}
.toc{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin:18px 0 6px}
.toc a{background:var(--card);border:1px solid var(--line);border-radius:99px;padding:6px 15px;
  font-size:12.5px;font-weight:600}
.article{background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:26px 28px;margin-top:16px;scroll-margin-top:76px}
.article h2{font-size:17px;font-weight:800;margin-bottom:12px}
.article h2 .no{color:var(--acc);margin-right:8px}
.article p{font-size:14px;line-height:2;margin-bottom:12px;color:#334155}
.article p:last-child{margin-bottom:0}
.article .meta{font-size:12px;color:var(--sub);margin-bottom:10px}

/* 关于 */
.about-block{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px 26px;margin-top:16px}
.about-block h2{font-size:15px;font-weight:800;margin-bottom:8px}
.about-block p{font-size:14px;line-height:2;color:#334155}

/* 页脚 */
footer.site{border-top:1px solid var(--line);background:var(--card);margin-top:56px;
  padding:22px 10px 26px;text-align:center;font-size:12.3px;color:var(--sub);line-height:2}
/* 悬停动效 */
.card,.article,.about-block{transition:border-color .25s ease,transform .3s ease,box-shadow .3s ease}
.card:hover,.article:hover,.about-block:hover{border-color:rgba(37,99,235,.45);transform:translateY(-3px);
  box-shadow:0 12px 30px rgba(37,99,235,.10)}
.topbar nav a{transition:color .2s ease}
.topbar nav a:hover{color:var(--acc);text-decoration:none}
.toc a{transition:border-color .2s ease,transform .2s ease,color .2s ease}
.toc a:hover{border-color:var(--acc);color:var(--acc);transform:translateY(-2px);text-decoration:none}
.brand{transition:opacity .2s ease}
.brand:hover{opacity:.75;text-decoration:none}
.go a{font-weight:700;transition:letter-spacing .25s ease}
.go a:hover{letter-spacing:1px}

footer.site .icp{display:inline-block;background:#e8f0fe;color:#1d4ed8;font-weight:700;
  padding:5px 14px;border-radius:99px;border:1px solid rgba(37,99,235,.28);
  text-decoration:none;margin-top:4px}
footer.site .icp:hover{background:#dbe7ff;text-decoration:none}
footer.site .note{display:block;font-size:11.5px;opacity:.85}