:root {
  --color-ink: #222222;
  --color-graphite: #444444;
  --color-steel: #4b5563;
  --color-fog: #969faf;
  --color-ash: #909090;
  --color-paper: #ffffff;
  --color-cloud: #f6f6f7;
  --color-chalk: #f0f0f0;
  --color-pebble: #e5e7eb;
  --color-cobalt: #3e7ff0;
  --color-signal-blue: #006be6;

  --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --radius-card: 8px;
  --radius-pill: 20px;

  --page-max-width: 1200px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--color-cloud);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.nav {
  background: var(--color-paper);
  border-bottom: 1px solid var(--color-pebble);
}

.nav-inner {
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--color-ink);
}

.brand-mark {
  display: block;
}

.brand-word {
  font-weight: 700;
  font-size: 16px;
  color: var(--color-ink);
}

.brand-dot {
  color: var(--color-cobalt);
}

main {
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: 64px 24px;
}

.hero {
  margin-bottom: 64px;
}

.hero h1 {
  font-size: 40px;
  line-height: 1.17;
  font-weight: 700;
  margin: 0 0 12px 0;
  color: var(--color-ink);
}

.hero-sub {
  font-size: 18px;
  line-height: 1.5;
  color: var(--color-graphite);
  margin: 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

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

.app-card {
  background: var(--color-paper);
  border: 1px solid var(--color-pebble);
  border-radius: var(--radius-card);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.app-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.app-card-header h2 {
  font-size: 20px;
  line-height: 1.5;
  font-weight: 600;
  margin: 0;
  color: var(--color-ink);
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--color-steel);
  background: var(--color-chalk);
  border-radius: var(--radius-pill);
  padding: 2px 10px;
}

.pill::before {
  content: "";
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.pill-unknown {
  color: var(--color-fog);
}

.pill-up {
  color: #2f8a5c;
}

.pill-down {
  color: #c0453a;
}

.app-card-desc {
  font-size: 14px;
  line-height: 1.42;
  color: var(--color-graphite);
  margin: 0;
  flex-grow: 1;
}

.open-btn {
  align-self: flex-start;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-signal-blue);
  text-decoration: none;
  border: 1px solid var(--color-pebble);
  border-radius: var(--radius-card);
  padding: 8px 12px;
}

.open-btn:hover {
  background: var(--color-cloud);
}

.site-footer {
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: 0 24px 40px;
  font-size: 12px;
  color: var(--color-ash);
}

.site-footer p {
  margin: 0;
}