:root {
  color-scheme: light;
  --ink: #241f2b;
  --muted: #655d70;
  --purple: #7c3aed;
  --purple-soft: #f2ebff;
  --line: #e7deef;
  --paper: #ffffff;
  --page: #f8f5fc;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

main {
  width: min(860px, calc(100% - 32px));
  margin: 42px auto;
  padding: clamp(28px, 6vw, 72px);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: 0 18px 60px rgba(67, 42, 92, 0.08);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 13px;
  color: var(--purple);
  background: var(--purple-soft);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--purple); }
h1 { margin: 22px 0 4px; font-size: clamp(36px, 7vw, 54px); line-height: 1.08; letter-spacing: -0.035em; }
h2 { margin: 38px 0 8px; font-size: 23px; line-height: 1.25; }
h3 { margin: 24px 0 6px; font-size: 18px; }
p, li { font-size: 16px; }
ul { padding-left: 24px; }
.meta { margin: 0 0 32px; color: var(--muted); }
.notice { padding: 18px 20px; background: var(--purple-soft); border-left: 4px solid var(--purple); border-radius: 12px; }
a { color: var(--purple); }
footer { margin-top: 46px; padding-top: 24px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }

@media (max-width: 600px) {
  main { width: 100%; margin: 0; border: 0; border-radius: 0; }
}