:root {
  --background: #ffffff;
  --foreground: #111111;
  --muted: #666666;
  --border: #e5e5e5;
}
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  background: var(--background);
  color: var(--foreground);
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
}
.site-wrapper {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 100vh;
}
.site-nav {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 3rem;
  border-right: 1px solid var(--border);
  overflow-y: auto;
}
.nav-header .logo {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 1.5rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--foreground);
}
.nav-header .date {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 0.5rem;
  display: block;
}
.nav-list {
  list-style: none;
}
.nav-list a {
  display: block;
  padding: 0.5rem 1rem;
  text-decoration: none;
  color: var(--muted);
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: 4px;
  transition: background-color 0.2s, color 0.2s;
}
.nav-list a:hover {
  background-color: #f0f0f0;
  color: var(--foreground);
}
.nav-list a.active {
  background-color: var(--foreground);
  color: var(--background);
}
.site-content {
  padding: 4rem 6rem;
}
section {
  padding-bottom: 4rem;
  margin-bottom: 4rem;
  border-bottom: 1px solid var(--border);
}
section:last-of-type {
  border-bottom: none;
  margin-bottom: 0;
}
section h1 {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 2.5rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
  letter-spacing: -1px;
}
section p {
  max-width: 70ch;
  margin-bottom: 2rem;
  color: #333;
  font-size: 1.1rem;
}
.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}
.item-card {
  border: 1px solid var(--border);
  padding: 1.5rem;
}
.item-card a {
  text-decoration: none;
  color: inherit;
}
.item-card h3 {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}
.item-card p,
.item-card small {
  color: var(--muted);
  font-size: 0.95rem;
}
.tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}
.tech-list-item {
  border: 1px solid var(--border);
  padding: 0.75rem 1.5rem;
  font-weight: 600;
}
@media (max-width: 1024px) {
  .site-wrapper {
    display: block;
  }
  .site-nav {
    position: relative;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 2rem;
  }
  .site-content {
    padding: 3rem 2rem;
  }
  section h1 {
    font-size: 2rem;
  }
}