/* 글 화면 공통 스타일. 계산기(index.html)와 같은 색과 글꼴을 쓴다. */
:root{
  --paper:#f2f4f3; --card:#fcfcfb; --ink:#14202b; --ink-2:#4a5560; --muted:#7f8890;
  --line:#dfe3e1; --axis:#c2c8c6; --mark:#ffd84a; --mark-ink:#14202b;
  --font-display:"Black Han Sans","IBM Plex Sans KR",system-ui,sans-serif;
  --font-body:"IBM Plex Sans KR",system-ui,-apple-system,"Apple SD Gothic Neo","Malgun Gothic",sans-serif;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    color-scheme:dark;
    --paper:#0e1317; --card:#171d22; --ink:#eef0ee; --ink-2:#bcc3c6; --muted:#8a9399;
    --line:#283038; --axis:#3a444c; --mark:#6a5200; --mark-ink:#fff3c4;
  }
}
:root[data-theme="dark"]{
  color-scheme:dark;
  --paper:#0e1317; --card:#171d22; --ink:#eef0ee; --ink-2:#bcc3c6; --muted:#8a9399;
  --line:#283038; --axis:#3a444c; --mark:#6a5200; --mark-ink:#fff3c4;
}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--paper);color:var(--ink);font-family:var(--font-body);font-size:17px;line-height:1.75;-webkit-font-smoothing:antialiased}
.wrap{max-width:720px;margin:0 auto;padding:40px 20px 64px;display:flex;flex-direction:column;gap:28px}
.top{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.brand{font-family:var(--font-display);font-size:28px;line-height:1;color:var(--ink);text-decoration:none}
.nav{display:flex;gap:6px}
.nav a{font-size:15px;font-weight:600;color:var(--ink-2);text-decoration:none;padding:7px 16px;border-radius:999px;border:1px solid var(--axis)}
.nav a[aria-current=page]{background:var(--ink);color:var(--paper);border-color:var(--ink)}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
h1{font-size:32px;line-height:1.3;margin:0;text-wrap:balance}
h2{font-size:22px;line-height:1.4;margin:28px 0 0}
p{margin:0}
mark{background:var(--mark);color:var(--mark-ink);padding:0 .18em;border-radius:3px}
.meta{font-size:14px;color:var(--muted)}
.lede{font-size:19px;color:var(--ink-2)}
article{display:flex;flex-direction:column;gap:16px}
article ul{margin:0;padding-left:1.2em;display:flex;flex-direction:column;gap:6px}
.tw{overflow-x:auto}
table{border-collapse:collapse;width:100%;font-size:15px;font-variant-numeric:tabular-nums}
th,td{text-align:right;padding:9px 10px;border-bottom:1px solid var(--line);white-space:nowrap}
th:first-child,td:first-child{text-align:left}
th{color:var(--ink-2);font-weight:500}
td strong{font-weight:600}
.cta{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px;display:flex;flex-direction:column;gap:12px;align-items:flex-start}
.cta p{font-weight:500}
.btn{display:inline-block;background:var(--ink);color:var(--paper);text-decoration:none;font-weight:600;padding:11px 20px;border-radius:999px}
.list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.list a{display:flex;flex-direction:column;gap:4px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px;text-decoration:none;color:var(--ink)}
.list a strong{font-size:20px;line-height:1.4;font-weight:600}
.list a span{font-size:15px;color:var(--ink-2)}
.soon{margin:0;padding-left:1.2em;color:var(--ink-2);font-size:16px;display:flex;flex-direction:column;gap:4px}
.label{font-size:14px;font-weight:600;color:var(--muted)}
footer{font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:16px;display:flex;flex-direction:column;gap:6px}
@media (max-width:640px){h1{font-size:26px}}
article table{display:block;overflow-x:auto;width:max-content;max-width:100%}
article h2:first-child{margin-top:0}