body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;margin:0;color:#222;line-height:1.6;background:#fff}
.site-header{background:#0f2a43;color:#fff;padding:1rem 1.5rem}
.site-header a{color:#9fd0ff;text-decoration:none;margin-right:1rem}
.slogan{margin:0.25rem 0 0;font-size:0.9rem;color:#cfe0f0}
main{max-width:1100px;margin:0 auto;padding:1.5rem;overflow-x:auto}
footer{max-width:1100px;margin:2rem auto 0;padding:1rem 1.5rem;border-top:1px solid #ddd;font-size:0.85rem;color:#666}
h1{font-size:1.6rem}h2{font-size:1.25rem;margin-top:1.8rem}h3{font-size:1rem}
.lead{font-size:1.05rem;color:#333}
.meta-line span{margin-right:1.2rem;font-size:0.9rem;color:#555}
.alert-warn{background:#fff8e1;border-left:4px solid #f9a825;padding:0.6rem 1rem;margin:1rem 0}
table{border-collapse:collapse;width:100%;margin:1rem 0;font-size:0.92rem}
th,td{border:1px solid #ccc;padding:0.45rem 0.6rem;text-align:left;vertical-align:top}
th{background:#eef3f8}
.compare-table th:first-child{white-space:nowrap;font-weight:600;background:#e7eef6}
.table-scroll{overflow-x:auto}
.model-grid{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:0.8rem}
.model-grid li{border:1px solid #ddd;border-radius:6px;padding:0.7rem 1rem}
.model-grid h3{margin:0 0 0.3rem}
.stale-note{font-size:0.85rem;color:#666}
@media(max-width:600px){main{padding:0.8rem}}