:root {
  --bg: #ffffff;
  --fg: #1f2328;
  --muted: #6a737d;
  --accent: #0a5ad4;
  --border: #e4e7eb;
  --notice-bg: #fff8e6;
  --notice-border: #f0d57a;
  --card-bg: #f7f8fa;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15181c;
    --fg: #e6e8eb;
    --muted: #9aa3ad;
    --accent: #6cabff;
    --border: #2c3138;
    --notice-bg: #2a2416;
    --notice-border: #6b5a23;
    --card-bg: #1c2026;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-text-size-adjust: 100%;
}

.wrap {
  max-width: 780px;
  margin: 0 auto;
  padding: 0 20px;
}

.site-header {
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
  font-size: 15px;
}

.site-header a {
  color: var(--muted);
  text-decoration: none;
}

.site-header a:hover {
  color: var(--accent);
}

main {
  padding: 32px 0 48px;
}

h1 {
  font-size: 1.7em;
  line-height: 1.3;
  margin: 0 0 8px;
}

h2 {
  font-size: 1.25em;
  line-height: 1.35;
  margin: 40px 0 12px;
}

h3 {
  font-size: 1.05em;
  margin: 28px 0 10px;
}

p,
ul,
ol {
  margin: 12px 0;
}

li {
  margin: 6px 0;
}

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

.doc-meta {
  color: var(--muted);
  font-size: 15px;
  margin: 0 0 24px;
}

.notice {
  background: var(--notice-bg);
  border: 1px solid var(--notice-border);
  border-radius: 8px;
  padding: 14px 18px;
  margin: 20px 0;
}

.notice p {
  margin: 8px 0;
}

.formula {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 18px;
  margin: 16px 0;
}

.formula p {
  margin: 6px 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 15.5px;
}

th,
td {
  border: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--card-bg);
}

.requisites {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 20px;
  margin: 20px 0;
}

.requisites p {
  margin: 6px 0;
}

.doc-list {
  list-style: none;
  padding: 0;
  margin: 24px 0;
}

.doc-list li {
  margin: 0 0 14px;
}

.doc-list a {
  display: block;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 20px;
  text-decoration: none;
  color: var(--fg);
  transition: border-color 0.15s ease;
}

.doc-list a:hover {
  border-color: var(--accent);
}

.doc-list .doc-title {
  display: block;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 4px;
}

.doc-list .doc-desc {
  display: block;
  font-size: 15px;
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 18px 0 28px;
  color: var(--muted);
  font-size: 14px;
}

.site-footer p {
  margin: 6px 0;
}

@media print {
  .site-header,
  .site-footer {
    display: none;
  }

  body {
    font-size: 12pt;
  }
}