:root{--bg:#f7f9fc;--card:#fff;--ink:#1f2a3d;--ink2:#4a5568;--line:#e2e8f0;--brand:#1c58d9;--brand-soft:#eaf1ff}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.65 Pretendard,-apple-system,"Apple SD Gothic Neo",sans-serif;
  word-break:keep-all;overflow-wrap:anywhere}
a{color:var(--brand)}
.top{background:var(--card);border-bottom:1px solid var(--line)}
.top .in{max-width:1120px;margin:0 auto;padding:14px 16px;display:flex;align-items:baseline;flex-wrap:wrap;column-gap:12px;row-gap:2px}
.top b{font-size:18px;letter-spacing:-.02em}
.top span{color:var(--ink2);font-size:15px}
.wrap{max-width:1120px;margin:0 auto;padding:24px 16px 64px;display:grid;grid-template-columns:220px minmax(0,1fr);gap:32px}
nav ol{list-style:none;margin:0;padding:0;position:sticky;top:16px}
nav li a{display:block;padding:8px 12px;border-left:3px solid transparent;border-radius:0 8px 8px 0;color:var(--ink2);text-decoration:none}
nav li a:hover{background:#eef2f8}
nav li a.on{background:var(--brand-soft);border-left-color:var(--brand);color:var(--ink);font-weight:600}
main{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:32px 40px;max-width:820px}
h1{font-size:30px;line-height:1.25;letter-spacing:-.03em;margin:0 0 16px}
h2{font-size:21px;letter-spacing:-.02em;margin:36px 0 10px;padding-top:4px}
p,li{color:var(--ink)}
ol,ul{padding-left:1.4em}
li{margin:6px 0}
img{display:block;max-width:min(100%,680px);height:auto;margin:12px 0 18px;border:1px solid var(--line);border-radius:10px;
  box-shadow:0 2px 10px rgba(31,42,61,.06)}
table{border-collapse:collapse;width:100%;margin:12px 0 18px;font-size:16px}
th,td{border-bottom:1px solid var(--line);padding:10px 8px;text-align:left;vertical-align:top}
th{color:var(--ink2);font-weight:600;background:#f9fbfe}
code{background:#eef2f8;border-radius:6px;padding:1px 6px;font-size:.92em}
.foot{color:var(--ink2);font-size:14px;margin-top:40px;border-top:1px solid var(--line);padding-top:14px}
@media (max-width:760px){
  .wrap{grid-template-columns:1fr;gap:12px;padding-top:12px}
  nav ol{position:static;display:flex;flex-wrap:wrap;gap:6px}
  nav li a{border-left:0;border-radius:999px;padding:6px 12px;background:#eef2f8}
  nav li a.on{background:var(--brand-soft)}
  main{padding:22px 18px;border-radius:10px}
  h1{font-size:25px}
}