:root{--bg:#fff;--fg:#1f2328;--muted:#6b7280;--line:#e5e7eb;--accent:#2563eb;--code:#f3f4f6}
*{box-sizing:border-box}
body{margin:0;font-family:"PingFang SC","HarmonyOS Sans","MiSans","Microsoft YaHei",system-ui,sans-serif;background:var(--bg);color:var(--fg);line-height:1.75;font-size:15px}
.container{width:100%;padding:0 28px}
.site-header{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:10}
.site-header .container{display:flex;align-items:center;gap:16px;height:56px}
.site-header a{color:var(--fg);text-decoration:none}
.brand{font-weight:700;font-size:16px}
.brand .dot{color:var(--accent)}
.crumb{color:var(--muted);font-size:13px}
.crumb a{color:var(--accent);text-decoration:none}
.article{min-width:0;padding:24px 32px 56px}
.article h1{font-size:26px;margin:8px 0 16px}
.article h2{font-size:20px;margin:32px 0 12px;padding-bottom:8px;border-bottom:1px solid var(--line)}
.article h3{font-size:17px;margin:24px 0 8px}
.article img{max-width:100%;border:1px solid var(--line);border-radius:8px;margin:8px 0}
.article table{border-collapse:collapse;width:100%;margin:12px 0;font-size:14px}
.article th,.article td{border:1px solid var(--line);padding:8px 12px;text-align:left;vertical-align:top}
.article th{background:#f9fafb;font-weight:600}
.article code{background:var(--code);padding:2px 6px;border-radius:4px;font-size:.9em}
.article pre{background:#f6f8fa;padding:12px 16px;border-radius:8px;overflow-x:auto}
.article pre code{background:none;padding:0}
.article blockquote{margin:12px 0;padding:8px 16px;border-left:4px solid var(--accent);background:#f8fafc;color:var(--muted);border-radius:0 6px 6px 0}
.article a{color:var(--accent);text-decoration:none}
.article a:hover{text-decoration:underline}
.article ul,.article ol{padding-left:24px}
.site-footer{border-top:1px solid var(--line);color:var(--muted);font-size:13px;padding:20px 0}
.products{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:20px;padding:28px 0 56px}
.card{display:block;border:1px solid var(--line);border-radius:12px;padding:20px 24px;color:var(--fg);text-decoration:none;transition:box-shadow .15s,transform .15s}
.card:hover{box-shadow:0 4px 16px rgba(0,0,0,.08);transform:translateY(-2px)}
.card h3{margin:0 0 8px;font-size:18px}
.card p{margin:0 0 12px;color:var(--muted);font-size:14px}
.card .meta{font-size:12px;color:var(--accent);font-weight:600}
.page-hero{padding:48px 0 8px}
.page-hero h1{margin:0;font-size:30px}
.page-hero p{color:var(--muted);margin:8px 0 0}