:root {
  color-scheme: light;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #242429;
  background: #f7f7f9;
}

* { box-sizing: border-box; }
body { margin: 0; line-height: 1.65; }
main {
  width: min(860px, calc(100% - 32px));
  margin: 32px auto;
  padding: clamp(24px, 5vw, 56px);
  background: #fff;
  border-radius: 18px;
  box-shadow: 0 8px 30px rgba(20, 20, 30, .08);
}
h1, h2 { line-height: 1.2; color: #c3001c; }
h1 { margin-top: 0; font-size: clamp(2rem, 6vw, 3rem); }
h2 { margin-top: 2rem; font-size: 1.3rem; }
a { color: #a30018; }
.meta, footer { color: #666; }
.notice { padding: 16px; border-left: 4px solid #c3001c; background: #fff4f6; }
ul { padding-left: 1.25rem; }
footer { margin-top: 40px; padding-top: 20px; border-top: 1px solid #e5e5e9; }