:root {
  --bg: #0d1117;
  --surface: #161b22;
  --text: #f5f5f5;
  --muted: #a7a9a9;
  --primary: #00e5ff;
  --accent: #8a2be2;
  --border: rgba(255, 255, 255, 0.12);
}

* {
  box-sizing: border-box;
}

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

body {
  font-family: "Inter", "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

a {
  color: var(--primary);
}

a:hover {
  opacity: 0.9;
}

.container {
  width: min(1080px, 92%);
  margin: 0 auto;
}

.navbar {
  position: sticky;
  top: 0;
  background: rgba(13, 17, 23, 0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}

.brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}

.menu {
  display: flex;
  gap: 16px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.menu a {
  text-decoration: none;
  color: var(--muted);
  font-weight: 600;
}

.menu a:hover,
.menu a.active {
  color: var(--primary);
}

.hero {
  padding: 64px 0 28px;
}

.hero h1 {
  margin: 0 0 12px;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  line-height: 1.25;
}

.hero p {
  color: var(--muted);
  max-width: 760px;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 14px;
  color: var(--muted);
  font-size: 0.95rem;
}

.badge {
  background: rgba(0, 229, 255, 0.12);
  border: 1px solid rgba(0, 229, 255, 0.25);
  color: var(--primary);
  padding: 4px 10px;
  border-radius: 999px;
  font-weight: 700;
}

.content {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-bottom: 56px;
}

.article-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px;
}

.article-card h2 {
  margin: 0 0 10px;
  font-size: 1.4rem;
}

.article-card p {
  margin: 0 0 12px;
}

.article-card ul,
.article-card ol {
  margin: 0;
  padding-left: 20px;
}

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

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin-bottom: 56px;
}

.post-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.post-card h3 {
  margin: 10px 0;
  font-size: 1.1rem;
}

.post-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.footer {
  border-top: 1px solid var(--border);
  padding: 28px 0 48px;
  color: var(--muted);
  font-size: 0.92rem;
}

.breadcrumb {
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.92rem;
}

.breadcrumb a {
  color: var(--primary);
  text-decoration: none;
}

@media (max-width: 760px) {
  .menu {
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  .article-card {
    padding: 20px;
  }
}