@import url("/fonts.css");
:root{
  --bg:#FFFDF7; --card:#FFFFFF; --ink:#18364B; --slate:#536575; --muted:#5C6D7D;
  --line:#E2E8EE; --primary:#2463EB; --on-primary:#FFFFFF;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#111B29; --card:#1A293B; --ink:#F3F6FC; --slate:#B8C7D9; --muted:#A0B0C4;
  --line:#2A333C; --primary:#8CB4FF; --on-primary:#111B29;
}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);line-height:1.9;
  font-family:"Plus Jakarta Sans","LINE Seed JP","Hiragino Sans",sans-serif;
  -webkit-font-smoothing:antialiased}
main{max-width:44rem;margin:0 auto;padding:48px 20px 80px}
header{border-bottom:1px solid var(--line);padding-bottom:18px;margin-bottom:28px}
h1{font-size:26px;margin:0 0 6px;letter-spacing:.01em}
.meta{color:var(--muted);font-size:13px}
h2{font-size:17px;margin:34px 0 10px;padding-top:18px;border-top:1px solid var(--line)}
h2:first-of-type{border-top:0;padding-top:0}
p,li{font-size:14.5px;color:var(--ink)}
ul{padding-left:1.2em}
li{margin-bottom:6px}
.note{background:var(--card);border:1px solid var(--line);border-left:3px solid var(--primary);
  border-radius:0 10px 10px 0;padding:14px 18px;font-size:13.5px;color:var(--slate)}
a{color:var(--primary)}
footer{margin-top:48px;padding-top:18px;border-top:1px solid var(--line);
  color:var(--muted);font-size:12.5px}
.en{color:var(--slate);font-size:13.5px}
.embed{margin:20px 0}
.embed iframe{display:block;width:100%;max-width:640px;height:691px;border:0;
  background:var(--card);border-radius:10px}
@media (max-width:640px){.embed iframe{height:900px}}
.lead{font-size:17px;line-height:1.85;margin:0 0 4px}
.lead strong{color:var(--primary)}
table{border-collapse:collapse;width:100%;margin:10px 0}
th,td{border-bottom:1px solid var(--line);padding:9px 10px;font-size:14px;text-align:left;
  vertical-align:top}
th{color:var(--muted);font-weight:600;font-size:12.5px}
td code,.lead code{background:var(--card);border:1px solid var(--line);border-radius:5px;
  padding:1px 6px;font-size:13.5px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
ol.flow{padding-left:0;list-style:none;counter-reset:flow}
ol.flow li{counter-increment:flow;position:relative;padding-left:32px;margin-bottom:10px}
ol.flow li::before{content:counter(flow);position:absolute;left:0;top:2px;width:22px;height:22px;
  border-radius:50%;background:var(--primary);color:var(--on-primary);font-size:12px;line-height:22px;
  text-align:center}
.links{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:18px;margin-top:28px}