:root {
  --bg: linear-gradient(180deg, #eef2ff, #f8fafc 60%, #edf2fb);
  --panel: #ffffff;
  --text: #0f172a;
  --muted: #4b5563;
  --primary: #2563eb;
  --border: rgba(15, 23, 42, 0.12);
  --shadow: 0 18px 44px rgba(15, 23, 42, 0.12);
  --radius: 18px;
  --max-width: 980px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Avenir Next", Avenir, "Trebuchet MS", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(100%, var(--max-width));
  margin: 0 auto;
  padding: 0 20px;
}

header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
}

.brand {
  font-weight: 800;
  letter-spacing: 0.2px;
}

.nav-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  color: var(--muted);
}

.nav-links a {
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
}

.nav-links a:hover {
  border-color: var(--border);
}

main {
  padding: 40px 0 64px;
}

.card {
  background: var(--panel);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 28px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(234, 179, 8, 0.16);
  color: #92400e;
  font-weight: 700;
  font-size: 12px;
  border: 1px solid rgba(234, 179, 8, 0.4);
}

.lede {
  color: var(--muted);
  margin-top: 8px;
}

.section {
  margin-top: 24px;
}

.section h2 {
  margin-bottom: 8px;
  font-size: 20px;
}

.list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
}

.list li {
  list-style: none;
  padding-left: 0;
  color: var(--muted);
}

.note {
  margin-top: 20px;
  padding: 16px;
  border-radius: 14px;
  background: rgba(37, 99, 235, 0.08);
  border: 1px solid rgba(37, 99, 235, 0.2);
  color: #1e3a8a;
  font-weight: 600;
}

footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  color: var(--muted);
}

@media (max-width: 720px) {
  .card {
    padding: 20px;
  }

  .nav {
    flex-direction: column;
    align-items: flex-start;
  }
}