:root {
  --bg: #0f1117;
  --bg-2: #141a24;
  --card: rgba(20, 26, 36, 0.92);
  --text: #e6ecf5;
  --muted: #9aa7bd;
  --accent: #27c2ff;
  --accent-2: #34d399;
  --danger: #ff6b6b;
  --border: rgba(255, 255, 255, 0.08);
  --shadow: 0 14px 40px rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Space Grotesk", "Sora", "Manrope", system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% 0%, #1a2436 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 10%, #13293d 0%, transparent 55%),
    linear-gradient(180deg, var(--bg), var(--bg-2));
  min-height: 100vh;
}

a {
  color: var(--accent);
  text-decoration: none;
}

header {
  padding: 48px 20px 24px;
  text-align: center;
}

header h1 {
  margin: 0 0 12px;
  font-size: clamp(28px, 3vw, 40px);
  letter-spacing: 0.4px;
}

header p {
  margin: 0 auto;
  max-width: 720px;
  color: var(--muted);
  font-size: 16px;
}

nav {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin-top: 18px;
  flex-wrap: wrap;
}

.pill {
  border: 1px solid var(--border);
  padding: 10px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
}

main {
  max-width: 980px;
  margin: 0 auto 80px;
  padding: 0 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 26px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.card + .card {
  margin-top: 18px;
}

h2 {
  margin-top: 0;
  font-size: clamp(22px, 2.4vw, 28px);
}

h3 {
  margin-bottom: 6px;
  font-size: 18px;
}

p {
  color: var(--muted);
  line-height: 1.6;
}

ul {
  margin: 8px 0 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.6;
}

.footer {
  margin-top: 28px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

.highlight {
  color: var(--accent-2);
  font-weight: 600;
}

.tag {
  display: inline-block;
  margin: 6px 0;
  padding: 6px 10px;
  font-size: 12px;
  border-radius: 999px;
  background: rgba(39, 194, 255, 0.12);
  color: var(--accent);
  border: 1px solid rgba(39, 194, 255, 0.3);
}

.notice {
  border-left: 3px solid var(--danger);
  padding: 10px 14px;
  background: rgba(255, 107, 107, 0.08);
  border-radius: 10px;
  color: var(--muted);
}

.split {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}