@page {
  size: A4;
  margin: 20mm 18mm 18mm 18mm;

  @bottom-center {
    content: counter(page);
    font-family: "NanumGothic", sans-serif;
    font-size: 8pt;
    color: #7b8490;
  }
}

@page:first {
  margin: 0;

  @bottom-center {
    content: none;
  }
}

:root {
  --primary: #2457a7;
  --primary-dark: #173b73;
  --primary-light: #eef4fc;
  --text: #252a31;
  --subtext: #667080;
  --line: #dce2e9;
  --background: #f7f9fb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "NanumGothic", "Nanum Gothic", sans-serif;
  font-size: 10.5pt;
  line-height: 1.75;
  word-break: keep-all;
  overflow-wrap: break-word;
}

.cover {
  height: 297mm;
  padding: 30mm 25mm;
  color: white;
  background: linear-gradient(
    135deg,
    var(--primary-dark),
    var(--primary)
  );
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  break-after: page;
}

.cover h1 {
  margin: 0;
  padding: 0;
  color: white;
  border: none;
  font-size: 30pt;
  line-height: 1.3;
}

.cover .subtitle {
  margin-top: 8mm;
  font-size: 14pt;
  opacity: 0.85;
}

.cover .meta {
  padding-top: 6mm;
  border-top: 1px solid rgba(255, 255, 255, 0.35);
  font-size: 10pt;
}

.toc {
  break-after: page;
}

h1,
h2,
h3 {
  color: var(--primary-dark);
  line-height: 1.4;
  break-after: avoid;
}

h1 {
  margin-top: 12mm;
  margin-bottom: 6mm;
  padding-bottom: 3mm;
  border-bottom: 2px solid var(--primary);
  font-size: 22pt;
}

h2 {
  margin-top: 9mm;
  margin-bottom: 4mm;
  font-size: 16pt;
}

h3 {
  margin-top: 6mm;
  margin-bottom: 3mm;
  font-size: 12.5pt;
}

p {
  margin: 0 0 4mm;
}

ul,
ol {
  margin: 3mm 0 5mm;
  padding-left: 7mm;
}

li {
  margin-bottom: 1.5mm;
}

table {
  width: 100%;
  margin: 5mm 0;
  border-collapse: collapse;
  font-size: 9pt;
}

thead {
  display: table-header-group;
}

th {
  padding: 3mm;
  color: white;
  background: var(--primary-dark);
  text-align: left;
}

td {
  padding: 3mm;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

tbody tr:nth-child(even) {
  background: var(--background);
}

blockquote {
  margin: 5mm 0;
  padding: 4mm 5mm;
  background: var(--primary-light);
  border-left: 4px solid var(--primary);
}

pre {
  padding: 5mm;
  color: #e9edf2;
  background: #202832;
  border-radius: 2mm;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

code {
  font-family: "DejaVu Sans Mono", monospace;
  font-size: 8.5pt;
}

img {
  display: block;
  max-width: 100%;
  max-height: 210mm;
  margin: 5mm auto;
}

.summary-box {
  margin: 6mm 0;
  padding: 5mm 6mm;
  background: var(--primary-light);
  border-left: 4px solid var(--primary);
  break-inside: avoid;
}

.page-break {
  break-before: page;
}