:root{--bg:#f6f7fb;--card:#fff;--text:#1f2937;--muted:#6b7280;--primary:#2563eb;--primary-soft:#eff6ff;--border:#e5e7eb;--code-bg:#f1f5f9;}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);min-height:100vh;display:flex;flex-direction:column}
.topbar{padding:28px 20px 18px;text-align:center;background:linear-gradient(180deg,#fff,#f6f7fb);border-bottom:1px solid var(--border)}
.title{margin:0 0 6px;font-size:28px;letter-spacing:1px}
.subtitle{margin:0;color:var(--muted);font-size:14px}
.main{flex:1;width:100%;max-width:880px;margin:0 auto;padding:22px 16px 40px}
.search-wrap{margin-bottom:18px}
#search{width:100%;font-size:17px;padding:14px 18px;border-radius:12px;border:1px solid var(--border);background:var(--card);outline:none;transition:border-color .15s,box-shadow .15s}
#search:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}
.search-meta{display:flex;justify-content:space-between;align-items:center;margin-top:10px;font-size:13px;color:var(--muted)}
#clear{border:1px solid var(--border);background:var(--card);padding:4px 12px;border-radius:8px;cursor:pointer;font-size:13px;color:var(--muted)}
#clear:hover{color:var(--primary);border-color:var(--primary)}
.cmd-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.cmd-card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:14px 16px;cursor:pointer;transition:transform .1s,box-shadow .15s,border-color .15s;text-decoration:none;color:inherit;display:block}
.cmd-card:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(37,99,235,.08);border-color:var(--primary)}
.cmd-card .name{font-family:Consolas,Menlo,monospace;font-size:16px;font-weight:600;color:var(--primary);margin-bottom:4px;word-break:break-all}
.cmd-card .brief{font-size:13px;color:var(--muted);line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cmd-card .tag{display:inline-block;margin-top:8px;font-size:11px;padding:2px 8px;border-radius:999px;background:var(--primary-soft);color:var(--primary)}
.empty{text-align:center;padding:50px 20px;color:var(--muted)}
.empty.hidden{display:none}
.empty code{background:var(--code-bg);padding:1px 6px;border-radius:4px;font-size:13px}
.footer{text-align:center;padding:16px;font-size:12px;color:var(--muted);border-top:1px solid var(--border);background:#fff}
.footer .dot{margin:0 6px;opacity:.5}
.detail-wrap{max-width:760px}
.back{display:inline-block;margin-bottom:16px;color:var(--primary);text-decoration:none;font-size:14px}
.back:hover{text-decoration:underline}
.cmd-title{font-family:Consolas,Menlo,monospace;font-size:26px;color:var(--primary);margin:8px 0 6px;word-break:break-all}
.cmd-tag{display:inline-block;font-size:12px;padding:3px 10px;border-radius:999px;background:var(--primary-soft);color:var(--primary);margin-bottom:10px}
.section{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:18px 20px;margin-bottom:16px}
.section h2{margin:0 0 12px;font-size:16px;color:var(--text);border-left:3px solid var(--primary);padding-left:10px}
.section p,.section li{line-height:1.7;font-size:14.5px}
.section ul{padding-left:20px;margin:0}
.syntax-block{background:var(--code-bg);border-radius:8px;padding:12px 14px;font-family:Consolas,Menlo,monospace;font-size:14px;margin:6px 0 12px;overflow-x:auto;white-space:pre}
.param-table{width:100%;border-collapse:collapse;font-size:14px;margin-top:6px}
.param-table th,.param-table td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--border);vertical-align:top}
.param-table th{background:var(--primary-soft);color:var(--primary);font-weight:600}
.param-table code{font-family:Consolas,Menlo,monospace;background:var(--code-bg);padding:1px 6px;border-radius:4px}
.example-item{margin-bottom:14px}
.example-item:last-child{margin-bottom:0}
.example-desc{font-size:13.5px;color:var(--muted);margin-bottom:4px}