:root {
  --bg: #f2f5f8;
  --surface: #fff;
  --ink: #14213d;
  --muted: #4c5a73;
  --line: #d3dce7;
  --dot: #e8a33d;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1626;
    --surface: #172138;
    --ink: #e8eef7;
    --muted: #a3b1c8;
    --line: #2a3957;
    --dot: #f2b04f;
    color-scheme: dark;
  }
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font:
    18px/1.7 "Bricolage Grotesque",
    system-ui,
    -apple-system,
    "Segoe UI",
    sans-serif;
}
a {
  color: inherit;
}
a:focus-visible {
  outline: 3px solid var(--dot);
  outline-offset: 3px;
}
.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 24px;
}
header {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 16px;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.2rem;
  text-decoration: none;
  letter-spacing: -0.02em;
}
.brand img {
  width: 30px;
  height: 30px;
  border-radius: 6px;
}
nav a {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--muted);
  text-decoration: none;
  margin-left: 16px;
}
nav a:hover {
  color: var(--ink);
}
main {
  padding: 40px 0 24px;
}
h1 {
  font-size: clamp(2rem, 6vw, 2.8rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 0 0 12px;
}
h2 {
  font-size: 1.5rem;
  line-height: 1.25;
  margin: 36px 0 8px;
}
.lead {
  color: var(--muted);
  font-size: 1.15rem;
}
.meta {
  color: var(--muted);
  font-size: 0.9rem;
}
li {
  margin: 6px 0;
}
.cta {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px;
  margin: 40px 0;
  text-align: center;
}
.cta h2 {
  margin: 0 0 8px;
}
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--bg);
  font-weight: 600;
  text-decoration: none;
}
.cards {
  display: grid;
  gap: 16px;
  margin: 24px 0;
}
.card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px 24px;
  text-decoration: none;
}
.card:hover {
  border-color: var(--dot);
}
.card b {
  font-size: 1.2rem;
  display: block;
  margin-bottom: 4px;
}
.card span {
  color: var(--muted);
  font-size: 0.95rem;
}
footer {
  border-top: 1px solid var(--line);
  padding: 24px 0 40px;
  color: var(--muted);
  font-size: 0.9rem;
}
.diag {
  margin: 24px auto;
  max-width: 360px;
  text-align: center;
}
.diag.wide {
  max-width: 440px;
}
.diag svg {
  width: 100%;
  height: auto;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--surface);
}
.diag figcaption {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 8px;
}
.pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 24px 0;
}
.pair .diag {
  margin: 0;
}
@media (max-width: 560px) {
  .pair {
    grid-template-columns: 1fr;
  }
}
.lt {
  fill: #e9eef5;
}
.dk {
  fill: #8ca0bf;
}
.hl {
  fill: #e8a33d;
  opacity: 0.6;
}
.pw {
  fill: #fff;
  stroke: #14213d;
  stroke-width: 1.2;
}
.pb {
  fill: #14213d;
  stroke: #e8eef7;
  stroke-width: 0.5;
}
.co {
  fill: var(--muted);
  font: 11px sans-serif;
}
.vl {
  fill: var(--ink);
  font: 700 14px sans-serif;
}
.rel {
  margin: 36px 0 0;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}