:root {
  --ink: #23303b;
  --ink-soft: #52606c;
  --rule: #d6dde2;
  --page: #f5f7f4;
  --card: #ffffff;
  --sky-1: #8cc8ec;
  --sky-2: #bfe3f5;
  --hill: #8fcf72;
  --ground: #6fb257;
  --balloon: #ef6b5b;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e2e8ec;
    --ink-soft: #9aa8b3;
    --rule: #2c3844;
    --page: #111a26;
    --card: #182333;
    --sky-1: #1b2c55;
    --sky-2: #34508a;
    --hill: #3f6b3f;
    --ground: #2f5431;
    --balloon: #c9574a;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
.band {
  position: relative;
  height: 132px;
  background: linear-gradient(180deg, var(--sky-1) 0%, var(--sky-2) 70%, var(--hill) 70%, var(--hill) 84%, var(--ground) 84%);
}
.band::after {
  content: "";
  position: absolute;
  left: 62%; top: 22px;
  width: 38px; height: 44px;
  border-radius: 50% 50% 46% 46%;
  background: var(--balloon);
  box-shadow: 0 34px 0 -15px #8a5a3a;
}
main { max-width: 40rem; margin: 0 auto; padding: 2.4rem 1.4rem 4rem; }
h1 { font-size: 1.9rem; line-height: 1.2; margin: 0 0 .3rem; font-weight: 600; letter-spacing: -0.01em; }
.tagline { color: var(--ink-soft); margin: 0 0 2.4rem; }
h2 { font-size: 1.15rem; margin: 2.6rem 0 .8rem; font-weight: 600; }
h3 { font-size: 1rem; margin: 1.7rem 0 .3rem; font-weight: 600; }
p { margin: 0 0 1rem; }
a { color: inherit; text-decoration: underline; text-underline-offset: 2px; }
.card { background: var(--card); border: 1px solid var(--rule); border-radius: 10px; padding: 1.1rem 1.2rem; margin: 0 0 1rem; }
.card p:last-child { margin-bottom: 0; }
ul { margin: 0 0 1rem; padding-left: 1.2rem; }
li { margin-bottom: .35rem; }
hr { border: 0; border-top: 1px solid var(--rule); margin: 3rem 0 0; }
footer { color: var(--ink-soft); font-size: .9rem; padding-top: 1.2rem; }