:root {
  color-scheme: light;
  --bg: #0b1220;
  --bg-alt: #101a2e;
  --card: rgba(17, 26, 43, 0.92);
  --text: #e7eef7;
  --muted: #9fb3c8;
  --accent: #38d6b5;
  --accent-2: #f3b35d;
  --accent-3: #ff6b6b;
  --border: rgba(255, 255, 255, 0.12);
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Space Grotesk", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 15% 20%, #1b315a, var(--bg) 55%),
    radial-gradient(circle at 85% 10%, rgba(243, 179, 93, 0.3), transparent 45%),
    radial-gradient(circle at 70% 80%, rgba(56, 214, 181, 0.35), transparent 50%);
  background-color: var(--bg);
}

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

.page {
  max-width: 1120px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: rgba(10, 16, 30, 0.9);
  box-shadow: var(--shadow);
  position: sticky;
  top: 20px;
  z-index: 10;
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.brand span:first-child {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
}

.brand h1 {
  margin: 0;
  font-size: 1.6rem;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.nav-links a {
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--muted);
  transition: all 0.2s ease;
}

.nav-links a:hover,
.nav-links a:focus {
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.4);
}

.hero {
  margin-top: 40px;
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

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

.hero-card h2 {
  margin-top: 0;
  font-size: 2rem;
  line-height: 1.2;
}

.hero-card p {
  color: var(--muted);
  font-size: 1.05rem;
}

.badge-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.badge {
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-2);
}

.fact-grid {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

.fact-item {
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(13, 20, 33, 0.65);
  font-size: 0.92rem;
  color: var(--muted);
}

.section {
  margin-top: 32px;
  padding: 28px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--card);
  box-shadow: var(--shadow);
}

.section h3 {
  margin-top: 0;
  font-size: 1.4rem;
}

.section p {
  color: var(--muted);
  line-height: 1.7;
}

.section ul {
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.7;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.metric-card {
  padding: 16px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(9, 14, 27, 0.7);
}

.metric-card h4 {
  margin: 0 0 6px;
  font-size: 1.2rem;
  color: var(--accent);
}

.metric-card span {
  color: var(--muted);
  font-size: 0.9rem;
}

.resource-list {
  display: grid;
  gap: 12px;
}

.resource {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(13, 20, 33, 0.75);
}

.resource span {
  color: var(--muted);
  font-size: 0.92rem;
}

.resource a {
  font-size: 0.92rem;
  color: var(--accent);
}

.citation {
  padding: 16px;
  border-radius: 14px;
  border: 1px dashed rgba(255, 255, 255, 0.35);
  background: rgba(10, 16, 30, 0.85);
  color: var(--muted);
  line-height: 1.6;
}

.copy-btn {
  margin-top: 12px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: all 0.2s ease;
}

.copy-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.footer {
  margin-top: 48px;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 720px) {
  .topbar {
    position: static;
  }

  .hero-card h2 {
    font-size: 1.6rem;
  }
}