:root {
  --ink: #1b2845;
  --sky: #8ed8f8;
  --banner: #1d6fd8;
  --sun: #ffc72e;
  --paper: #ffffff;
  --line: #d7e3ee;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--sky);
  color: var(--ink);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  max-width: 760px;
  margin: 0 auto;
  padding: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: 22px;
  font-weight: 800;
  text-decoration: none;
}

.brand img {
  border-radius: 10px;
}

nav {
  display: flex;
  gap: 8px;
}

nav a {
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--paper);
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 3px 0 rgba(27, 40, 69, 0.18);
}

main {
  max-width: 760px;
  margin: 0 auto 24px;
  padding: 8px 24px 28px;
  border-radius: 24px;
  background: var(--paper);
  box-shadow: 0 6px 0 rgba(27, 40, 69, 0.14);
}

@media (max-width: 792px) {
  main {
    margin-left: 16px;
    margin-right: 16px;
    padding: 4px 18px 22px;
  }
}

h1 {
  margin: 22px 0 8px;
  font-size: 30px;
  line-height: 1.2;
}

h2 {
  margin: 30px 0 6px;
  font-size: 21px;
}

h3 {
  margin: 22px 0 4px;
  font-size: 18px;
}

a {
  color: var(--banner);
  font-weight: 600;
}

ul,
ol {
  padding-left: 22px;
}

li {
  margin: 4px 0;
}

.table {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

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

th {
  background: #eef5fb;
}

footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 16px 32px;
  font-size: 14px;
  text-align: center;
}