* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #fff;
  color: #000;
  line-height: 1.55;
  padding: 40px 20px 80px;
}
.wrap { max-width: 700px; margin: 0 auto; }
a { color: #000; }
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
}
.home { color: #000; text-decoration: none; font-weight: 600; }
h1 { font-size: 2rem; font-weight: 600; line-height: 1.15; }
.subtitle { color: #555; font-size: 1rem; margin-top: 4px; }
.updated { color: #555; margin: 8px 0 28px; }
h2 { font-size: 1.2rem; margin: 28px 0 10px; }
p, ul { margin-bottom: 12px; }
ul { padding-left: 1.2em; }
li { margin-bottom: 6px; }
.landing-header { margin-bottom: 8px; }
.brand { display: flex; align-items: center; gap: 14px; }
.logo { width: 52px; height: 52px; border-radius: 12px; display: block; }
.hero { display: flex; justify-content: center; margin: 28px 0 4px; }
.hero-frame {
  width: 118px;
  max-width: 34%;
  overflow: hidden;
  border-radius: 22px;
  border: 1px solid #e4e4e4;
  line-height: 0;
}
.hero-frame img { width: 100%; height: auto; display: block; }
.cards { display: grid; gap: 20px; margin-top: 28px; }
.card {
  border: 1px solid #000;
  background: #fff;
  padding: 24px;
  text-decoration: none;
  color: #000;
}
.card:hover { background: #000; color: #fff; }
.card h2 { font-size: 1.3rem; margin: 0 0 10px; }
footer {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid #000;
  color: #333;
  font-size: 0.9rem;
}