:root {
  --primary: #2A7CA3;
  --primary-dark: #1F6A8E;
  --primary-soft: #E1EEF5;
  --mint: #B8DCD0;
  --text: #1B2830;
  --text-secondary: #55656E;
  --bg: #F4F7F8;
  --card: #FFFFFF;
  --divider: #EDF1F3;
}

@media (prefers-color-scheme: dark) {
  :root {
    --primary: #69AED0;
    --primary-dark: #8FC6E2;
    --primary-soft: #1E3A4A;
    --mint: #8CC5B3;
    --text: #E6EDF0;
    --text-secondary: #9DADB5;
    --bg: #10181D;
    --card: #1A262D;
    --divider: #24363F;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Nunito", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

header {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 20px 8px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  color: var(--primary);
  text-decoration: none;
}

.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--mint);
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-mark::after {
  content: "";
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--primary);
}

h1 {
  margin: 20px 0 4px;
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.updated {
  margin: 0;
  color: var(--text-secondary);
  font-weight: 600;
}

main {
  max-width: 760px;
  margin: 24px auto;
  padding: 8px 28px 28px;
  background: var(--card);
  border-radius: 24px;
}

h2 {
  margin: 28px 0 6px;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--primary-dark);
}

p, li { font-size: 1rem; }

ul { margin: 6px 0 12px; padding-left: 1.2rem; }

li { margin-bottom: 6px; }

a { color: var(--primary); font-weight: 700; }

.note {
  background: var(--primary-soft);
  border-radius: 16px;
  padding: 14px 18px;
  margin: 18px 0;
}

.links {
  display: grid;
  gap: 12px;
  margin: 20px 0 8px;
}

.links a {
  display: block;
  padding: 18px 20px;
  border-radius: 18px;
  background: var(--bg);
  text-decoration: none;
  color: var(--text);
}

.links a span {
  display: block;
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 8px 20px 48px;
  color: var(--text-secondary);
  font-size: 0.9rem;
}