:root{--bg:#f4f7fb;--surface:#fff;--text:#142033;--muted:#5d6b82;--line:#d8e0ee;--brand:#3563e9}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--text);margin:0;padding:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}a{color:inherit;text-decoration:none}.site-shell{grid-template-rows:auto 1fr auto;min-height:100vh;display:grid}.site-header{z-index:10;border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#ffffffeb;justify-content:space-between;align-items:center;padding:16px 24px;display:flex;position:sticky;top:0}.brand{letter-spacing:.02em;font-weight:800}.top-nav{color:var(--muted);gap:16px;display:flex}.site-body{grid-template-columns:240px 1fr;gap:24px;width:100%;max-width:1240px;margin:0 auto;padding:24px;display:grid}.site-sidebar{background:var(--surface);border:1px solid var(--line);border-radius:16px;height:fit-content;padding:16px}.site-sidebar h3{margin:0 0 10px;font-size:1rem}.site-sidebar ul{color:var(--muted);margin:0;padding-left:18px}.site-main{min-width:0}.site-footer{border-top:1px solid var(--line);color:var(--muted);justify-content:space-between;padding:16px 24px;display:flex}.page-heading h1{margin:0 0 10px;font-size:2rem}.page-heading p{color:var(--muted);margin:0 0 18px}.articles-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;display:grid}.article-card{background:var(--surface);border:1px solid var(--line);border-radius:16px;overflow:hidden}.article-cover{background:linear-gradient(135deg,#dbe7ff 0%,#f2f6ff 100%);height:170px}.article-content{padding:14px 14px 16px}.article-tag{color:var(--brand);background:#edf2ff;border-radius:999px;padding:4px 10px;font-size:.72rem;font-weight:700;display:inline-block}.article-content h3{margin:10px 0 8px;font-size:1.15rem;line-height:1.3}.article-content p{color:var(--muted);margin:0 0 14px;line-height:1.5}.article-meta{color:var(--muted);justify-content:space-between;align-items:center;font-size:.88rem;display:flex}.details-btn{border:1px solid var(--brand);color:var(--brand);border-radius:10px;padding:6px 10px;font-size:.85rem;font-weight:600}.pagination{justify-content:center;align-items:center;gap:14px;margin-top:18px;display:flex}.pagination a{border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:8px 12px}.pagination .disabled{pointer-events:none;opacity:.5}.empty-state{color:var(--muted)}.article-page{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:24px}.article-page-title{margin:0 0 14px;font-size:2rem}.article-page-excerpt{color:var(--muted);margin:0 0 18px;font-size:1.05rem}.article-page p{margin:0 0 14px;line-height:1.75}@media (max-width:960px){.site-body{grid-template-columns:1fr}.site-sidebar{order:2}.articles-grid{grid-template-columns:1fr}}