:root {
  color-scheme: light;
  --bg: #f9fafb;
  --surface: #ffffff;
  --text: #191f28;
  --muted: #6b7684;
  --line: #e5e8eb;
  --blue: #3182f6;
  --blue-weak: #e8f3ff;
  --red: #e42939;
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.65;
}

a {
  color: var(--blue);
  text-decoration: none;
}

.page {
  width: min(100%, 760px);
  margin: 0 auto;
  padding: 24px 18px 56px;
}

.top {
  padding: 18px 0 20px;
}

.brand {
  margin: 0;
  font-size: 15px;
  font-weight: 800;
  color: var(--blue);
}

.title {
  margin: 8px 0 0;
  font-size: 26px;
  line-height: 1.25;
  letter-spacing: 0;
}

.subtitle {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin: 0 0 14px;
}

.nav a {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border-radius: 12px;
  background: var(--surface);
  color: #4e5968;
  font-weight: 700;
  font-size: 13px;
  border: 1px solid var(--line);
}

.nav a[aria-current="page"] {
  background: var(--blue-weak);
  color: var(--blue);
  border-color: transparent;
}

.notice {
  margin: 0 0 12px;
  padding: 12px 14px;
  border-radius: 14px;
  background: #fff4f4;
  color: var(--red);
  font-size: 13px;
  font-weight: 700;
}

.doc {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 18px 24px;
}

.doc h1 {
  margin: 0 0 10px;
  font-size: 24px;
  line-height: 1.3;
}

.doc h2 {
  margin: 30px 0 10px;
  font-size: 19px;
  line-height: 1.35;
}

.doc h3 {
  margin: 24px 0 8px;
  font-size: 16px;
  line-height: 1.4;
}

.doc p {
  margin: 9px 0;
}

.doc ul {
  margin: 8px 0 14px;
  padding-left: 20px;
}

.doc li {
  margin: 4px 0;
}

.doc table {
  width: 100%;
  border-collapse: collapse;
  margin: 14px 0 18px;
  font-size: 13px;
  overflow-wrap: anywhere;
}

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

.doc th {
  color: #4e5968;
  font-weight: 800;
  background: #f7f8fa;
}

.doc code {
  padding: 2px 5px;
  border-radius: 6px;
  background: #f2f4f6;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em;
}

.doc pre {
  margin: 14px 0;
  padding: 14px;
  overflow-x: auto;
  border-radius: 12px;
  background: #f2f4f6;
}

.doc pre code {
  padding: 0;
  background: transparent;
}

.footer {
  margin-top: 18px;
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}

@media (max-width: 430px) {
  .page {
    padding: 18px 14px 48px;
  }

  .title {
    font-size: 23px;
  }

  .nav {
    grid-template-columns: 1fr;
  }

  .doc {
    padding: 20px 16px;
  }
}