:root {
  color-scheme: light;
  --red: #d71920;
  --yellow: #ffd500;
  --ink: #171717;
  --muted: #636363;
  --line: #e7e7e7;
  --paper: #ffffff;
  --wash: #f5f5f3;
}

* { box-sizing: border-box; }

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

header {
  background: var(--red);
  border-bottom: 6px solid var(--yellow);
  color: white;
}

.header-inner, main, footer {
  width: min(820px, calc(100% - 36px));
  margin: 0 auto;
}

.header-inner { padding: 26px 0 24px; }
.brand { margin: 0; font-size: 1.08rem; font-weight: 900; letter-spacing: .02em; }
.edition { margin: 2px 0 0; font-size: .76rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }

main {
  margin-top: 30px;
  margin-bottom: 30px;
  padding: clamp(24px, 5vw, 52px);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: 0 12px 34px rgba(0, 0, 0, .07);
}

h1 { margin: 0 0 4px; font-size: clamp(2rem, 7vw, 3.25rem); line-height: 1.08; }
h2 { margin: 34px 0 8px; font-size: 1.24rem; line-height: 1.3; }
p, li { color: #333; }
.updated { margin: 0 0 28px; color: var(--muted); font-size: .9rem; }
a { color: #075fc7; text-underline-offset: 2px; }
ul { padding-left: 22px; }
.notice { padding: 16px 18px; background: #fff8d5; border-left: 4px solid var(--yellow); border-radius: 7px; }
.links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.links a { padding: 9px 13px; border: 1px solid var(--line); border-radius: 10px; font-weight: 700; text-decoration: none; }
footer { padding: 0 0 34px; color: var(--muted); font-size: .8rem; text-align: center; }

@media (max-width: 520px) {
  main { margin-top: 18px; padding: 24px 20px; border-radius: 16px; }
}