:root {
  color-scheme: light;
  --ink: #171722;
  --muted: #626278;
  --accent: #5b42ff;
  --surface: #f5f5ff;
  --line: #deddf0;
  --white: #ffffff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--surface);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
  line-height: 1.75;
}

a { color: #3926d7; }

.site-header {
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
}

.nav, .wrap, .footer-inner {
  width: min(100% - 40px, 880px);
  margin: 0 auto;
}

.nav {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  color: var(--ink);
  font-size: 1.08rem;
  font-weight: 800;
  text-decoration: none;
}

.nav-links { display: flex; gap: 18px; }
.nav-links a { font-weight: 700; text-decoration: none; }

main { padding: 52px 0 64px; }

.hero { margin-bottom: 28px; }
.eyebrow { color: var(--accent); font-weight: 800; margin: 0 0 8px; }
h1 { font-size: clamp(1.8rem, 5vw, 2.6rem); line-height: 1.3; margin: 0 0 12px; }
.meta { color: var(--muted); margin: 0; }

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: clamp(22px, 5vw, 38px);
  box-shadow: 0 16px 42px rgba(45, 38, 112, 0.06);
}

article + article {
  border-top: 1px solid var(--line);
  margin-top: 28px;
  padding-top: 22px;
}

h2 { font-size: 1.25rem; line-height: 1.5; margin: 0 0 8px; }
p, ul { margin: 0 0 12px; }
li + li { margin-top: 5px; }

.notice {
  background: #efedff;
  border-radius: 16px;
  padding: 16px 18px;
  margin: 18px 0;
}

footer { background: var(--white); border-top: 1px solid var(--line); }
.footer-inner { padding: 28px 0; color: var(--muted); }
.footer-links { display: flex; flex-wrap: wrap; gap: 16px; }

@media (max-width: 620px) {
  .nav { align-items: flex-start; flex-direction: column; padding: 14px 0; }
  .nav-links { flex-wrap: wrap; gap: 10px 16px; }
  main { padding-top: 34px; }
}