:root{--ink:#1d2522;--muted:#5c6764;--rule:#dfe5e1;--accent:#1d2522;--bg:#f6f8f6}
*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:#fff;line-height:1.6;font-size:16px}
header{border-bottom:1px solid var(--rule)}header .in{max-width:860px;margin:0 auto;padding:14px 20px;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
header a{color:var(--ink);text-decoration:none}header .brand{font-weight:700}header nav a{margin-left:16px;color:var(--muted);font-size:14px}
main{max-width:860px;margin:0 auto;padding:28px 20px 60px}h1{font-size:28px;margin:0 0 6px}h2{font-size:20px;margin:28px 0 8px;border-bottom:1px solid var(--rule);padding-bottom:4px}h3{font-size:16px;margin:18px 0 6px}
.meta{color:var(--muted);font-size:14px;margin-bottom:20px}table{border-collapse:collapse;width:100%;font-size:15px}td,th{border:1px solid var(--rule);padding:8px;text-align:left;vertical-align:top}th{background:var(--bg)}
.zh{background:var(--bg);border-left:3px solid var(--rule);padding:12px 16px;margin:10px 0 18px;font-size:15px}.lang{font-size:13px;color:var(--muted)}
footer{border-top:1px solid var(--rule);color:var(--muted);font-size:13px}footer .in{max-width:860px;margin:0 auto;padding:16px 20px}
code{background:var(--bg);padding:1px 5px;border-radius:4px}ol li,ul li{margin:4px 0}