:root {
  color-scheme: light;
  --paper: #fefefa;
  --ink: #090909;
  --muted: #777775;
  --line: #ebebea;
}

* { box-sizing: border-box; }

html, body { margin: 0; background: var(--paper); color: var(--ink); }

body {
  font-family: "Nanum Gothic Coding", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  font-weight: 400;
}

main {
  width: min(720px, calc(100% - 40px));
  margin: 0 auto;
  padding: 48px 0 80px;
}

.lockup { display: flex; align-items: center; gap: 12px; }

.logo { height: 32px; width: auto; }

.brand { display: block; width: 148px; height: auto; }

[hidden] { display: none !important; }

button, .open {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  margin: 8px 8px 0 0;
  padding: 0 16px;
  border: 0;
  background: var(--ink);
  color: var(--paper);
  font: inherit;
  white-space: nowrap;
  text-decoration: none;
}

.open { background: transparent; color: var(--ink); border-bottom: 1px solid var(--line); min-height: 0; padding: 0; }

.code { margin: 18px 0; font-size: 28px; letter-spacing: 0.08em; }

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 28px 0 36px;
  font-size: 14px;
}

a { color: var(--ink); }

nav a { text-decoration: none; border-bottom: 1px solid var(--line); }

h1 {
  margin: 0 0 12px;
  font-size: 28px;
  font-weight: 400;
  letter-spacing: -0.03em;
}

h2 {
  margin: 40px 0 8px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 18px;
  font-weight: 400;
}

p, li { line-height: 1.75; }

.slogan { margin: 18px 0 0; font-size: 16px; }

.meta, .en { color: var(--muted); }

.en { font-size: 14px; }

ul, ol { padding-left: 1.2rem; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }

th, td {
  padding: 10px 8px;
  border-top: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  line-height: 1.6;
}

footer {
  margin-top: 48px;
  color: var(--muted);
  font-size: 14px;
}