*{box-sizing:border-box;margin:0;padding:0}
html,body{background:#f4f6fb;color:#1f2937;font-family:'PingFang SC','Microsoft YaHei',sans-serif;line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.nv-wrap{max-width:1200px;margin:0 auto;padding:0 20px}
.nv-nav{background:#fff;padding:14px 0;border-bottom:1px solid #e5e7eb;position:sticky;top:0;z-index:50}
.nv-nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.nv-logo{font-size:22px;font-weight:800;color:#2563eb;letter-spacing:1px}
.nv-menu{display:flex;gap:14px;flex-wrap:wrap}
.nv-menu a{padding:6px 12px;border-radius:6px;font-size:14px;transition:.2s;color:#6b7280}
.nv-menu a:hover{background:#2563eb;color:#f4f6fb}
.nv-hero{padding:60px 0 36px;text-align:center}
.nv-hero h1{font-size:36px;margin-bottom:14px;color:#2563eb}
.nv-hero p{color:#6b7280;max-width:760px;margin:0 auto;font-size:15px}
.nv-section{padding:30px 0}
.nv-section h2{font-size:22px;margin-bottom:18px;padding-left:12px;border-left:4px solid #2563eb}
.nv-foot{margin-top:60px;background:#fff;padding:30px 0;text-align:center;font-size:13px;color:#6b7280;border-top:1px solid #e5e7eb}
.nv-foot a{color:#2563eb}
.nv-detail{padding:30px 0;display:grid;grid-template-columns:2fr 1fr;gap:30px}
.nv-detail article{background:#fff;padding:24px;border-radius:10px;border:1px solid #e5e7eb}
.nv-detail h1{font-size:26px;margin-bottom:14px;color:#2563eb}
.nv-detail .meta{color:#6b7280;font-size:13px;margin-bottom:18px}
.nv-detail img{border-radius:8px;margin:14px 0}
.nv-side{background:#fff;padding:18px;border-radius:10px;height:fit-content;border:1px solid #e5e7eb}
.nv-side h3{font-size:16px;margin-bottom:12px;color:#2563eb}
.nv-side ul{list-style:none}
.nv-side li{padding:8px 0;border-bottom:1px dashed #e5e7eb;font-size:13px}
.nv-comments{margin-top:24px}
.nv-comments h3{margin-bottom:12px;font-size:18px;color:#2563eb}
.nv-cmt{background:#f4f6fb;padding:12px 14px;border-radius:8px;margin-bottom:10px;font-size:14px;border:1px solid #e5e7eb}
.nv-cmt .u{color:#2563eb;font-weight:600;margin-right:8px;font-size:13px}
@media(max-width:768px){.nv-detail{grid-template-columns:1fr}.nv-hero h1{font-size:26px}}
.nv-mas{column-count:4;column-gap:16px}
.nv-card{break-inside:avoid;background:#fff;border-radius:10px;overflow:hidden;border:1px solid #e5e7eb;margin-bottom:16px;transition:.2s;display:block}
.nv-card:hover{box-shadow:0 8px 24px rgba(37,99,235,.12);transform:translateY(-3px)}
.nv-card img{width:100%;height:auto;object-fit:cover}
.nv-card-body{padding:12px 14px}
.nv-card-title{font-size:14px;font-weight:600;margin-bottom:6px;line-height:1.45}
.nv-card-meta{font-size:12px;color:#6b7280}
@media(max-width:1100px){.nv-mas{column-count:3}}
@media(max-width:768px){.nv-mas{column-count:2}}
@media(max-width:480px){.nv-mas{column-count:1}}