:root{--fg:#1f2328;--muted:#5b6470;--line:#e3e6ea;--accent:#2f6fed;--bg:#ffffff;--soft:#f5f7fa}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP","Yu Gothic",sans-serif;line-height:1.85;-webkit-font-smoothing:antialiased}
a{color:var(--accent)}
.top{border-bottom:1px solid var(--line);background:#fff}
.top .in{max-width:820px;margin:0 auto;padding:12px 20px;display:flex;justify-content:space-between;align-items:center;font-size:13px}
.top .in a{color:var(--muted);text-decoration:none}
.top .in .app{font-weight:700;color:var(--fg)}
main{max-width:820px;margin:0 auto;padding:36px 20px 64px}
h1{font-size:26px;line-height:1.4;margin:0 0 6px}
.lead{color:var(--muted);font-size:14px;margin:0 0 28px}
h2{font-size:18px;margin:36px 0 10px;padding:0 0 6px;border-bottom:2px solid var(--line)}
h3{font-size:15px;margin:22px 0 6px}
p,li{font-size:15px}
ul,ol{padding-left:1.4em}
li{margin:4px 0}
.box{background:var(--soft);border-radius:12px;padding:14px 18px;margin:14px 0}
.box.warn{background:#fff6f6;border:1px solid #f1c9c9}
table{border-collapse:collapse;width:100%;font-size:14px;margin:10px 0}
th,td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
th{background:var(--soft);white-space:nowrap;width:9em}
.date{color:var(--muted);font-size:13px;margin-top:40px}
footer{border-top:1px solid var(--line);color:var(--muted);font-size:12px;text-align:center;padding:20px}
.nav{display:flex;gap:16px;flex-wrap:wrap;font-size:14px;margin:0 0 20px}
@media (max-width:600px){h1{font-size:22px}th{width:auto;white-space:normal}}