:root {
  --text: #cfcfd6;
  --text-h: #f5f5f7;
  --bg: #0c0d10;
  --accent: #8fb8ff;
  --glass-bg: rgba(10, 11, 14, 0.5);
  --glass-blur: 14px;
  --glass-border: rgba(255, 255, 255, 0.1);
  --sans: 'Satoshi', system-ui, 'Segoe UI', Roboto, sans-serif;
  --display: 'Cabinet Grotesk', 'Satoshi', system-ui, sans-serif;
  --mono: ui-monospace, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font: 18px/1.6 var(--sans);
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.fn-header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 24px 32px;
  border-bottom: 1px solid var(--glass-border);
}

.fn-header a {
  color: var(--text-h);
  text-decoration: none;
  font-family: var(--display);
  font-weight: 700;
  transition: color 200ms ease;
}

.fn-header a:hover {
  color: var(--accent);
}

.fn-header-sub {
  color: var(--text);
  font-size: 14px;
  font-family: var(--mono);
}

.fn-index,
.fn-article {
  max-width: 860px;
  margin: 0 auto;
  padding: 48px 32px 96px;
}

.fn-index-title {
  font-family: var(--display);
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 32px;
  color: var(--text-h);
}

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

.fn-card {
  display: block;
  padding: 20px;
  border-radius: 12px;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  color: inherit;
  text-decoration: none;
  transition: border-color 200ms ease, transform 150ms ease;
}

.fn-card:hover {
  border-color: rgba(255, 255, 255, 0.22);
  transform: translateY(-2px);
}

.fn-card:active {
  transform: translateY(0) scale(0.99);
}

.fn-card-meta {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.fn-card-title {
  font-size: 18px;
  font-weight: 500;
  color: var(--text-h);
  margin: 0 0 10px;
  line-height: 1.3;
}

.fn-card-readtime {
  font-size: 13px;
  color: var(--text);
}

.fn-article-meta {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0 0 16px;
}

.fn-tag {
  margin-right: 4px;
}

.fn-article-title {
  font-family: var(--display);
  font-size: 40px;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-h);
  margin: 0 0 16px;
}

.fn-dek {
  font-size: 19px;
  line-height: 1.5;
  color: var(--text);
  max-width: 65ch;
  margin: 0 0 32px;
}

.fn-article-body p {
  margin: 0 0 20px;
}

.fn-article-body blockquote {
  margin: 32px 0;
  padding-left: 20px;
  border-left: 2px solid var(--accent);
  font-size: 20px;
  line-height: 1.5;
  color: var(--text-h);
  font-style: italic;
}

.fn-article-body ul {
  margin: 0 0 20px;
  padding-left: 22px;
}

.fn-article-body li {
  margin-bottom: 8px;
}

.fn-nav {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--glass-border);
  flex-wrap: wrap;
}

.fn-nav-link {
  color: var(--accent);
  text-decoration: none;
  font-size: 14px;
  transition: opacity 200ms ease;
}

.fn-nav-link:hover {
  opacity: 0.75;
}

.fn-nav-index {
  color: var(--text);
}

@media (max-width: 700px) {
  .fn-grid {
    grid-template-columns: 1fr;
  }
  .fn-index-title,
  .fn-article-title {
    font-size: 28px;
  }
}