* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  color: #1b2733;
  background: #f6f8f4;
  line-height: 1.42;
}

a {
  color: #174f7a;
}

.shell {
  display: grid;
  grid-template-columns: minmax(220px, 250px) minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: auto;
  background: #15344f;
  color: #fff;
  padding: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.brand img {
  width: 42px;
  height: 42px;
}

.nav-toggle {
  width: 100%;
  margin-bottom: 8px;
  padding: 6px;
  color: #fff;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.4);
  cursor: pointer;
}

.nav-list {
  display: grid;
  gap: 4px;
}

.nav-list a {
  color: #fff;
  text-decoration: none;
  padding: 7px 9px;
  border-left: 4px solid transparent;
}

.nav-list a.active,
.nav-list a:hover {
  background: rgba(255,255,255,.12);
  border-color: #f5b442;
}

.content {
  min-width: 0;
}

.top {
  background: #fff;
  border-bottom: 1px solid #dce4df;
  padding: 16px clamp(16px, 3vw, 36px);
}

.top img {
  width: 58px;
  height: 58px;
  vertical-align: middle;
  margin-right: 12px;
}

h1 {
  display: inline;
  font-size: 34px;
  margin: 0;
  letter-spacing: 0;
}

h2 {
  margin: 14px 0 7px;
  font-size: 22px;
}

h3 {
  margin: 12px 0 5px;
  font-size: 17px;
}

p {
  max-width: 980px;
  margin: 7px 0;
}

.band {
  padding: 14px clamp(16px, 3vw, 36px);
}

.facts {
  display: grid;
  grid-template-columns: minmax(160px, 240px) minmax(0, 1fr);
  max-width: 980px;
  border-top: 1px solid #dce4df;
}

.facts div {
  padding: 6px 8px 6px 0;
  border-bottom: 1px solid #dce4df;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0;
}

.button {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 7px 11px;
  border-radius: 6px;
  background: #15344f;
  color: #fff;
  text-decoration: none;
}

.button.secondary {
  background: #fff;
  color: #15344f;
  border: 1px solid #15344f;
}

table {
  border-collapse: collapse;
  width: auto;
  max-width: 100%;
  margin: 8px 0 12px;
  background: #fff;
}

th,
td {
  border: 1px solid #d4ded8;
  padding: 2px 5px;
  text-align: left;
  vertical-align: top;
}

th {
  background: #e8f0ec;
  cursor: pointer;
}

code,
pre {
  font-family: Consolas, "Courier New", monospace;
}

pre {
  margin: 8px 0;
  padding: 10px;
  background: #102333;
  color: #f4fbff;
  overflow-x: auto;
  max-width: 980px;
}

.formula-box {
  max-width: 980px;
  margin: 10px 0;
  padding: 10px 12px;
  border-left: 4px solid #f5b442;
  background: #fff;
}

.formula-box p {
  margin: 3px 0;
}

.version-entry {
  max-width: 980px;
  margin: 10px 0;
  padding: 10px 0;
  border-top: 1px solid #dce4df;
}

.version-entry p {
  margin: 4px 0;
}

.footer {
  padding: 14px clamp(16px, 3vw, 36px) 22px;
  border-top: 1px solid #dce4df;
  background: #fff;
  color: #52606c;
}

body.nav-collapsed .shell {
  grid-template-columns: 56px minmax(0, 1fr);
}

body.nav-collapsed .brand strong,
body.nav-collapsed .nav-list span {
  display: none;
}

@media (max-width: 760px) {
  .shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
  }

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

  body.nav-collapsed .brand strong,
  body.nav-collapsed .nav-list span {
    display: inline;
  }

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