:root {
  color-scheme: light dark;
  --accent: #5b7cfa;
  --background: #f4f5fb;
  --card: #ffffff;
  --text: #15171c;
  --muted: #626773;
  --border: rgba(21, 23, 28, 0.1);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", sans-serif;
  line-height: 1.7;
}

header, main, footer {
  width: min(760px, calc(100% - 32px));
  margin-inline: auto;
}

header { padding: 56px 0 24px; }
main { padding-bottom: 40px; }
footer { padding: 0 0 48px; color: var(--muted); font-size: 14px; }

h1 { margin: 0 0 8px; font-size: clamp(34px, 8vw, 52px); line-height: 1.15; }
h2 { margin: 32px 0 10px; font-size: 22px; line-height: 1.35; }
h3 { margin: 24px 0 8px; font-size: 18px; }
p, ul { margin: 8px 0 16px; }
a { color: var(--accent); text-underline-offset: 3px; }

.eyebrow { color: var(--accent); font-weight: 700; }
.lede { color: var(--muted); font-size: 18px; }
.card {
  margin: 16px 0;
  padding: 22px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
}
.links { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; }
.links a { display: block; padding: 18px; background: var(--card); border-radius: 18px; text-decoration: none; font-weight: 650; }
.meta { color: var(--muted); font-size: 14px; }
.notice { border-left: 4px solid var(--accent); }

@media (prefers-color-scheme: dark) {
  :root {
    --background: #111318;
    --card: #1c1f26;
    --text: #f5f6fa;
    --muted: #b2b6c0;
    --border: rgba(255, 255, 255, 0.1);
  }
}