:root {
  --bg: #08111f;
  --bg-soft: #0f1b31;
  --panel: rgba(15, 23, 42, 0.92);
  --panel-strong: #0f172a;
  --text: #e5edf7;
  --muted: #9fb0c8;
  --accent: #67e8f9;
  --accent-2: #c4b5fd;
  --accent-3: #86efac;
  --border: rgba(148, 163, 184, 0.18);
  --shadow: 0 20px 60px rgba(2, 8, 23, 0.35);
  --max: 1120px;
  font-family: Inter, "DM Sans", "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(103, 232, 249, 0.08), transparent 30%),
    radial-gradient(circle at top right, rgba(196, 181, 253, 0.08), transparent 28%),
    linear-gradient(180deg, #08111f 0%, #0b1224 100%);
  color: var(--text);
}

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

a:hover {
  text-decoration: underline;
}

.site-header,
.site-footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 20px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(16px);
  background: rgba(8, 17, 31, 0.78);
}

.site-header nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.site-header nav a {
  color: var(--text);
  font-size: 0.95rem;
}

.logo {
  font-weight: 800;
  letter-spacing: 0.02em;
}

.page {
  max-width: var(--max);
  margin: 0 auto;
  padding: 28px 16px 72px;
}

.hero,
.panel,
.card,
.explainer,
.comparison,
.category-callout {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.hero {
  padding: 32px;
}

.hero h1,
h1 {
  margin: 0;
  line-height: 1.1;
}

.hero p {
  max-width: 760px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.button,
.hero-actions a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 12px 18px;
  font-weight: 700;
  border: 1px solid transparent;
}

.button-primary,
.hero-actions a:first-child {
  background: var(--accent);
  color: #082032;
}

.button-secondary,
.hero-actions a:last-child {
  border-color: var(--border);
  color: var(--text);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 12px;
  color: var(--accent);
}

.tagline,
.muted {
  color: var(--muted);
}

.summary {
  font-size: 1.08rem;
  line-height: 1.75;
  color: #dbe8f5;
}

.breadcrumbs {
  color: var(--muted);
  font-size: 0.92rem;
  margin-bottom: 14px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.card {
  padding: 18px;
  transition: transform 160ms ease, border-color 160ms ease;
}

.card:hover {
  transform: translateY(-2px);
  border-color: rgba(103, 232, 249, 0.35);
}

.card h2 {
  margin: 8px 0;
  color: #fff;
  font-size: 1.1rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin-top: 24px;
}

.stat {
  padding: 16px;
  border-radius: 18px;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border);
}

.stat strong {
  display: block;
  font-size: 1.5rem;
  color: white;
}

.explainer,
.comparison {
  padding: 28px;
}

.explainer section,
.comparison section,
.panel {
  margin-top: 18px;
}

.key-points,
.related-terms,
.topic-list {
  background: rgba(15, 23, 42, 0.7);
  padding: 14px 18px;
  border-radius: 16px;
  border: 1px solid var(--border);
}

.key-points li,
.related-terms li,
.topic-list li {
  margin: 8px 0;
}

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

.comparison .columns > div {
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px;
}

.verdict {
  background: linear-gradient(135deg, rgba(103, 232, 249, 0.12), rgba(196, 181, 253, 0.12));
  padding: 16px;
  border-radius: 18px;
  border: 1px solid rgba(103, 232, 249, 0.24);
}

.site-footer {
  color: var(--muted);
  border-top: 1px solid rgba(148, 163, 184, 0.1);
  margin-top: 32px;
}

@media (max-width: 760px) {
  .site-header,
  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero,
  .explainer,
  .comparison {
    padding: 22px;
  }
}