:root {
  --color-surface-primary: #0f1115;
  --color-surface-secondary: #161a22;
  --color-surface-accent: #2b8cbe;
  --color-text-primary: #f4f7ff;
  --color-text-secondary: #c4cbdd;
  --color-text-inverse: #0b0d12;
  --color-border-default: #2a3345;
  --color-border-strong: #3b4a63;
  --color-state-success: #2e8b57;
  --color-state-warning: #d18c00;
  --color-state-error: #c0392b;
  --color-state-info: #2b8cbe;

  --font-primary: "Atkinson Hyperlegible", "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  --font-mono: "Cascadia Mono", Consolas, "Courier New", monospace;

  --size-caption: 12px;
  --size-body: 14px;
  --size-title: 20px;

  --space-xs: 4px;
  --space-s: 8px;
  --space-m: 12px;
  --space-l: 16px;
  --space-xl: 24px;

  --radius-s: 4px;
  --radius-m: 8px;
  --radius-l: 12px;

  --stroke-thin: 1px;
  --stroke-default: 2px;
  --stroke-strong: 3px;

  --shadow-low: 0 6px 14px rgba(5, 7, 11, 0.35);
  --shadow-medium: 0 12px 28px rgba(5, 7, 11, 0.45);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-primary);
  color: var(--color-text-primary);
  background:
    radial-gradient(circle at 5% 5%, #1e2635 0%, transparent 35%),
    radial-gradient(circle at 95% 0%, #152033 0%, transparent 30%),
    var(--color-surface-primary);
  line-height: 1.55;
  min-height: 100vh;
}

.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 22px var(--space-l) 34px;
}

.topbar {
  display: flex;
  gap: var(--space-s);
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  margin-bottom: var(--space-l);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-s);
  text-decoration: none;
  color: var(--color-text-primary);
}

.brand img {
  width: 30px;
  height: 30px;
}

.brand-name {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.nav {
  display: flex;
  gap: var(--space-s);
  flex-wrap: wrap;
}

.nav a {
  font-size: var(--size-caption);
  color: var(--color-text-primary);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 999px;
  border: var(--stroke-thin) solid var(--color-border-default);
  background: rgba(43, 140, 190, 0.08);
}

.nav a:hover {
  border-color: var(--color-surface-accent);
  background: rgba(43, 140, 190, 0.18);
}

.hero {
  border: var(--stroke-thin) solid var(--color-border-default);
  border-radius: var(--radius-l);
  padding: var(--space-xl);
  background:
    linear-gradient(130deg, rgba(43, 140, 190, 0.24), rgba(43, 140, 190, 0.06)),
    var(--color-surface-secondary);
  box-shadow: var(--shadow-medium);
  margin-bottom: var(--space-l);
}

.hero h1 {
  margin: 0 0 var(--space-s);
  font-size: 30px;
  line-height: 1.2;
}

.hero p {
  margin: 0;
  color: var(--color-text-secondary);
  max-width: 900px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-m);
  margin-bottom: var(--space-l);
}

.card {
  border: var(--stroke-thin) solid var(--color-border-default);
  border-radius: var(--radius-m);
  background: var(--color-surface-secondary);
  box-shadow: var(--shadow-low);
  overflow: hidden;
}

.card .card-content {
  padding: var(--space-l);
}

.card h2,
.card h3 {
  margin: 0 0 var(--space-s);
  font-size: 18px;
  line-height: 1.25;
}

.card p {
  margin: 0;
  color: var(--color-text-secondary);
}

.card img {
  width: 100%;
  border-bottom: var(--stroke-thin) solid var(--color-border-default);
  background: #131820;
}

.feature-list {
  margin: 0;
  padding-left: 18px;
}

.feature-list li {
  margin-bottom: 6px;
  color: var(--color-text-secondary);
}

.section-title {
  margin: 0 0 var(--space-s);
  font-size: 22px;
}

.section-subtitle {
  margin: 0 0 var(--space-m);
  color: var(--color-text-secondary);
}

.stack {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-m);
}

.cta-row {
  display: flex;
  gap: var(--space-s);
  flex-wrap: wrap;
  margin-top: var(--space-l);
}

.cta {
  display: inline-block;
  text-decoration: none;
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 600;
}

.cta.primary {
  background: var(--color-surface-accent);
  color: var(--color-text-inverse);
}

.cta.secondary {
  border: var(--stroke-thin) solid var(--color-border-strong);
  color: var(--color-text-primary);
  background: rgba(255, 255, 255, 0.03);
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-s);
  margin-top: var(--space-s);
}

.badge {
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: 999px;
  padding: 3px 8px;
  border: var(--stroke-thin) solid var(--color-border-default);
}

.badge.success {
  color: #b6f0cf;
  border-color: #2e8b57;
  background: rgba(46, 139, 87, 0.16);
}

.badge.warning {
  color: #f5d37e;
  border-color: #d18c00;
  background: rgba(209, 140, 0, 0.16);
}

.badge.info {
  color: #b9ddf0;
  border-color: #2b8cbe;
  background: rgba(43, 140, 190, 0.16);
}

.footer {
  margin-top: 26px;
  color: var(--color-text-secondary);
  font-size: var(--size-caption);
}

.link {
  color: #95d2ef;
}

@media (max-width: 700px) {
  .page {
    padding: 16px 12px 24px;
  }

  .hero {
    padding: 16px;
  }

  .hero h1 {
    font-size: 24px;
  }
}