:root {
  --paper: #fff;
  --ink: #000;
  --muted: #555;
  --line: #b7b9ed;
  --accent: #3e45e8;
  --accent-visited: #8f70dd;
  --accent-2: #9ea1e8;
  --tab: #eee;
  --tab-hover: #e3e4ff;
  --tab-active: #dedede;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 18px/1.55 Georgia, "Times New Roman", serif;
}

header,
main {
  max-width: 920px;
  margin: 0 auto;
  padding: 0 24px;
}

header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  padding-top: 24px;
  padding-bottom: 48px;
}

.brand-block {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 52px;
  font-weight: bold;
  text-decoration: none;
}

.brand img {
  width: 72px;
  height: 72px;
  object-fit: contain;
}

.brand-tagline {
  margin: -0.15rem 0 0 84px;
  color: var(--muted);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  flex: 0 0 auto;
  align-self: end;
  margin-left: 8px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--tab);
  overflow: hidden;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 21px;
}

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

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

nav a {
  display: inline-block;
  min-width: 96px;
  margin-left: 0;
  padding: 10px 22px 12px;
  border: 0;
  border-right: 1px solid var(--line);
  border-radius: 0;
  background: var(--tab);
  box-shadow: none;
  color: var(--accent);
  text-align: center;
  text-decoration: none;
  transition: background 120ms ease, color 120ms ease;
}

nav a:first-child {
  margin-left: 0;
}

nav a:not(:first-child):not(:last-child) {
  border-radius: 0;
}

nav a:last-child {
  border-right: 0;
}

nav a.active,
nav a:hover {
  position: relative;
  z-index: 1;
  background: var(--tab-active);
  color: var(--accent);
}

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

nav a.active,
nav a.active:visited {
  background: var(--tab-active);
  color: var(--accent);
}

nav a:hover:visited {
  color: var(--accent);
}

main {
  padding-bottom: 72px;
}

h1,
h2,
h3,
h4 {
  line-height: 1.15;
  margin: 2rem 0 0.8rem;
}

h1 {
  max-width: 720px;
  font-size: clamp(2.4rem, 7vw, 5rem);
  letter-spacing: -0.06em;
}

.tagline {
  margin: -0.35rem 0 1.5rem;
  color: var(--muted);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h2 {
  border-top: 1px solid var(--line);
  padding-top: 1.2rem;
  font-size: 1.55rem;
}

p,
ul,
pre,
table {
  max-width: 760px;
}

.lede {
  color: var(--muted);
  font-size: 1.25rem;
}

code {
  background: #e9edf2;
  border-radius: 3px;
  padding: 0.05rem 0.22rem;
  font-size: 0.9em;
}

pre {
  overflow-x: auto;
  padding: 16px 18px;
  border: 1px solid var(--line);
  background: #eef2f6;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0 2.5rem;
  font-size: 0.9rem;
}

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

th {
  color: var(--muted);
  font-weight: normal;
}

.bench-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
  max-width: none;
}

.chart {
  margin: 0;
  padding: 14px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.45);
}

.chart img {
  display: block;
  width: 100%;
  height: auto;
}

.date {
  color: var(--muted);
  font-size: 0.9rem;
}

.post-list article {
  border-top: 1px solid var(--line);
  padding: 1rem 0;
}

@media (max-width: 680px) {
  header {
    align-items: flex-start;
    flex-direction: column;
  }

  nav {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-self: stretch;
    width: 100%;
    margin-left: 0;
    font-size: 1.1rem;
  }

  nav a {
    display: block;
    min-width: 0;
    padding: 9px 12px 10px;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  nav a:nth-child(2n),
  nav a:last-child {
    border-right: 0;
  }

  nav a:last-child,
  nav a:nth-last-child(2):nth-child(odd) {
    border-bottom: 0;
  }

  nav a:last-child:nth-child(odd) {
    grid-column: 1 / -1;
  }

  body {
    font-size: 16px;
  }
}