:root {
  --blue-1: #5B94F9;
  --blue-2: #1B3DD1;
  --ink: #1c2333;
  --muted: #5a6478;
  --border: #e6e9f2;
  --bg: #fbfcff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}

header.hero {
  background: linear-gradient(135deg, var(--blue-1), var(--blue-2));
  color: #fff;
  padding: 2.5rem 1.5rem 2rem;
  text-align: center;
}

header.hero .brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.3rem;
}

header.hero .star {
  width: 1.4rem;
  height: 1.4rem;
  display: inline-block;
}

header.hero nav {
  margin-top: 1.2rem;
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  font-size: 0.95rem;
}

header.hero nav a {
  color: #fff;
  opacity: 0.9;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

header.hero nav a:hover,
header.hero nav a.active {
  opacity: 1;
  border-bottom-color: #fff;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

h1 { font-size: 1.7rem; margin-bottom: 0.2rem; }
h2 { font-size: 1.2rem; margin-top: 2.2rem; border-top: 1px solid var(--border); padding-top: 1.6rem; }
h3 { font-size: 1rem; margin-top: 1.4rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.03em; font-size: 0.85rem; }

.meta {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.callout {
  background: #eef3ff;
  border-left: 3px solid var(--blue-1);
  padding: 1rem 1.2rem;
  border-radius: 6px;
  margin: 1.2rem 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.92rem;
}

th, td {
  text-align: left;
  padding: 0.55rem 0.7rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th { color: var(--muted); font-weight: 600; }

a { color: var(--blue-2); }

footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 2rem 1.5rem 3rem;
}