:root {
  --primary: #2eb6ff;
  --secondary: #5fc8ff;
  --bg: #08121d;
  --section-bg: #0e1927;
  --card-bg: #121f31;
  --text: #eef6ff;
  --muted: #99a9bd;
  --border: rgba(255, 255, 255, 0.08);
  --radius: 16px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.blog-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(8, 18, 29, 0.92);
  backdrop-filter: blur(8px);
  z-index: 10;
  flex-wrap: wrap;
}

.blog-nav .brand {
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--text);
}

.blog-nav .brand span { color: var(--primary); }

.blog-nav .links { display: flex; gap: 18px; flex-wrap: wrap; font-size: 0.92rem; }
.blog-nav .links a { color: var(--muted); }
.blog-nav .links a:hover { color: var(--primary); }

.blog-shell { max-width: 880px; margin: 0 auto; padding: 48px 24px 80px; }

.blog-hero { margin-bottom: 40px; }
.blog-hero h1 { font-size: clamp(2rem, 4vw, 2.6rem); margin: 0 0 12px; }
.blog-hero p { color: var(--muted); font-size: 1.05rem; max-width: 640px; }

.post-list { display: flex; flex-direction: column; gap: 18px; }

.post-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 26px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.post-card:hover { border-color: var(--primary); transform: translateY(-2px); }

.post-card .tag {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
  background: rgba(46, 182, 255, 0.12);
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
}

.post-card h2 { margin: 0 0 8px; font-size: 1.3rem; }
.post-card h2 a { color: var(--text); }
.post-card p { margin: 0; color: var(--muted); font-size: 0.96rem; }
.post-card .meta { margin-top: 12px; font-size: 0.82rem; color: var(--muted); }

article.post { max-width: 720px; margin: 0 auto; padding: 48px 24px 80px; }
article.post .eyebrow { color: var(--primary); font-size: 0.82rem; letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 10px; }
article.post h1 { font-size: clamp(1.9rem, 4vw, 2.5rem); margin: 0 0 14px; line-height: 1.2; }
article.post .byline { color: var(--muted); font-size: 0.92rem; margin-bottom: 34px; }
article.post h2 { font-size: 1.4rem; margin: 36px 0 14px; color: var(--secondary); }
article.post h3 { font-size: 1.15rem; margin: 26px 0 10px; color: var(--text); }
article.post p { color: #cfe0f2; margin: 0 0 16px; }
article.post ul, article.post ol { color: #cfe0f2; margin: 0 0 16px; padding-left: 22px; }
article.post li { margin-bottom: 8px; }
article.post strong { color: var(--text); }
article.post .callout {
  background: var(--section-bg);
  border-left: 3px solid var(--primary);
  border-radius: 8px;
  padding: 16px 20px;
  margin: 24px 0;
  color: var(--text);
}
article.post .cta {
  margin-top: 44px;
  padding: 28px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: center;
}
article.post .cta a.btn {
  display: inline-block;
  margin-top: 14px;
  padding: 12px 24px;
  background: var(--primary);
  color: #06121f;
  font-weight: 700;
  border-radius: 999px;
}
article.post .cta a.btn:hover { text-decoration: none; opacity: 0.9; }

.blog-footer {
  border-top: 1px solid var(--border);
  padding: 28px 24px;
  text-align: center;
  color: var(--muted);
  font-size: 0.88rem;
}
.blog-footer a { color: var(--muted); margin: 0 8px; }
.blog-footer a:hover { color: var(--primary); }

@media (max-width: 640px) {
  .blog-shell, article.post { padding-left: 18px; padding-right: 18px; }
}