*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --luno-bg: #f1f5f9;
  --luno-surface: #ffffff;
  --luno-ink: #0f172a;
  --luno-muted: #64748b;
  --luno-border: #e2e8f0;
  --luno-accent: #0284c7;
  --luno-accent-soft: #e0f2fe;
  --luno-radius: 14px;
  --luno-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
  --luno-max: 1100px;
}

body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--luno-bg);
  color: var(--luno-ink);
  min-height: 100vh;
  line-height: 1.65;
}

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

a:hover {
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--luno-border);
  padding: 0 1.25rem;
  height: 3.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--luno-ink);
  text-decoration: none;
}

.site-logo span {
  color: var(--luno-accent);
}

.site-nav a {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--luno-muted);
  text-decoration: none;
  margin-left: 1.25rem;
}

.site-nav a:hover {
  color: var(--luno-accent);
  text-decoration: none;
}

.hero {
  background: linear-gradient(135deg, #0369a1 0%, #0ea5e9 55%, #38bdf8 100%);
  color: #fff;
  padding: 4rem 1.5rem;
  text-align: center;
}

.hero h1 {
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
}

.hero p {
  font-size: 1rem;
  opacity: 0.92;
  max-width: 32rem;
  margin: 0 auto 1.75rem;
}

.hero-btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: #fff;
  color: var(--luno-accent);
  font-weight: 700;
  border-radius: 999px;
  text-decoration: none;
  font-size: 0.9375rem;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.12);
}

.hero-btn:hover {
  opacity: 0.92;
  text-decoration: none;
}

.page {
  max-width: var(--luno-max);
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

.page-intro {
  margin-bottom: 1.5rem;
}

.page-intro h1 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.03em;
  margin-bottom: 0.35rem;
}

.page-intro p {
  color: var(--luno-muted);
  font-size: 0.9375rem;
}

.page-with-sidebar {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 2rem;
  align-items: start;
}

@media (max-width: 768px) {
  .page-with-sidebar {
    grid-template-columns: 1fr;
  }

  .sidebar {
    order: -1;
  }
}

.section {
  max-width: var(--luno-max);
  margin: 0 auto;
  padding: 2.5rem 1.25rem;
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.section-title {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.section-more {
  font-size: 0.875rem;
  color: var(--luno-accent);
  font-weight: 600;
  text-decoration: none;
}

.section-more:hover {
  text-decoration: underline;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  background: var(--luno-surface);
  border: 1px solid var(--luno-border);
  border-radius: var(--luno-radius);
  padding: 0.85rem 1rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--luno-shadow);
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.sidebar-panel {
  background: var(--luno-surface);
  border: 1px solid var(--luno-border);
  border-radius: var(--luno-radius);
  padding: 1rem;
  box-shadow: var(--luno-shadow);
}

.sidebar-panel h2 {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--luno-muted);
  margin-bottom: 0.75rem;
}

.widget-surface {
  background: var(--luno-surface);
  border: 1px solid var(--luno-border);
  border-radius: var(--luno-radius);
  padding: 1rem;
  box-shadow: var(--luno-shadow);
}

.site-footer {
  text-align: center;
  padding: 1.5rem 1.25rem 2rem;
  font-size: 0.75rem;
  color: var(--luno-muted);
  border-top: 1px solid var(--luno-border);
}

.site-footer a {
  color: var(--luno-muted);
}