:root {
  --brand: #5b5bd6;
  --brand-dark: #4343a8;
  --text: #262636;
  --muted: #63637a;
  --bg: #f7f7fc;
  --card: #ffffff;
  --border: #e2e2ee;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}

header {
  background: var(--brand);
  color: #fff;
  padding: 28px 20px;
}

.header-inner {
  max-width: 760px;
  margin: 0 auto;
}

.header-inner a {
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 22px;
}

.header-inner .tagline {
  margin: 4px 0 0;
  font-size: 14px;
  opacity: 0.9;
}

main {
  max-width: 760px;
  margin: 32px auto 48px;
  padding: 0 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px;
}

h1 { font-size: 28px; margin: 0 0 4px; }
h2 { font-size: 20px; margin: 28px 0 8px; color: var(--brand-dark); }
p.meta { color: var(--muted); font-size: 14px; margin-top: 0; }

ul { padding-left: 22px; }
li { margin: 6px 0; }

a { color: var(--brand-dark); }

.links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.links a {
  display: inline-block;
  background: var(--brand);
  color: #fff;
  text-decoration: none;
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 600;
}

.links a:hover { background: var(--brand-dark); }

footer {
  max-width: 760px;
  margin: 0 auto 40px;
  padding: 0 20px;
  color: var(--muted);
  font-size: 13px;
}

footer nav a { margin-right: 14px; }