*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #050D1A;
  --bg-soft: #071426;
  --card: #0a1628;
  --card-2: #0d1e34;
  --accent: #0da3e6;
  --accent-soft: rgba(13, 163, 230, 0.12);
  --text: #f0f0f0;
  --muted: #9aa7b8;
  --quiet: #6f7d8f;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(13, 163, 230, 0.28);
  --max: 1120px;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  background:
    radial-gradient(circle at 18% 8%, rgba(13, 163, 230, 0.12), transparent 32rem),
    linear-gradient(180deg, #050D1A 0%, #071426 46%, #050D1A 100%);
  color: var(--text);
  font-family: "Inter", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.72;
}

a {
  color: inherit;
}

.site-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(5, 13, 26, 0.9);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 18px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  font-family: "Montserrat", Arial, sans-serif;
  font-weight: 900;
  font-size: 0.98rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  font-family: "Montserrat", Arial, sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--text);
}

.nav-cta,
.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 20px;
  background: var(--accent);
  color: #fff;
  border: 1px solid var(--accent);
  font-family: "Montserrat", Arial, sans-serif;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.nav-cta:hover,
.button-link:hover {
  background: #38c4f5;
  transform: translateY(-1px);
  box-shadow: 0 8px 28px rgba(13, 163, 230, 0.28);
}

.button-link.secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}

.page-hero {
  padding: 90px 40px 54px;
  border-bottom: 1px solid var(--border);
}

.hero-inner {
  max-width: var(--max);
  margin: 0 auto;
}

.eyebrow,
.article-kicker {
  color: var(--accent);
  font-family: "JetBrains Mono", "Courier New", monospace;
  font-size: 0.78rem;
  letter-spacing: 2px;
  text-transform: uppercase;
}

h1,
h2,
h3,
.card-title {
  font-family: "Montserrat", Arial, sans-serif;
  letter-spacing: 0;
  line-height: 1.08;
}

h1 {
  max-width: 920px;
  margin-top: 18px;
  font-size: clamp(2.55rem, 6vw, 5.4rem);
  font-weight: 900;
}

.hero-copy {
  max-width: 760px;
  margin-top: 22px;
  color: var(--muted);
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.content-wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 58px 40px 86px;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}

.article-card {
  min-height: 100%;
  padding: 26px;
  background: linear-gradient(180deg, rgba(13, 30, 52, 0.88), rgba(10, 22, 40, 0.94));
  border: 1px solid var(--border);
  border-radius: 6px;
}

.article-card:hover {
  border-color: var(--border-strong);
}

.card-meta,
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--quiet);
  font-family: "JetBrains Mono", "Courier New", monospace;
  font-size: 0.75rem;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.card-title {
  display: block;
  margin-top: 12px;
  color: var(--text);
  font-size: 1.25rem;
  font-weight: 800;
  text-decoration: none;
}

.card-title:hover {
  color: var(--accent);
}

.card-summary {
  margin-top: 14px;
  color: var(--muted);
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.tag {
  padding: 5px 9px;
  border: 1px solid var(--border);
  color: var(--muted);
  font-family: "JetBrains Mono", "Courier New", monospace;
  font-size: 0.72rem;
}

.section-heading {
  margin-top: 54px;
  font-size: 1.55rem;
  font-weight: 800;
}

.topic-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-top: 22px;
}

.topic-pill {
  padding: 15px 16px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.025);
  color: var(--muted);
  font-family: "Montserrat", Arial, sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 1.4px;
  text-transform: uppercase;
}

.article-shell {
  max-width: 900px;
  margin: 0 auto;
  padding: 58px 40px 88px;
}

.breadcrumbs {
  margin-bottom: 28px;
  color: var(--quiet);
  font-family: "JetBrains Mono", "Courier New", monospace;
  font-size: 0.78rem;
}

.breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
}

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

.article-header {
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
}

.article-header h1 {
  font-size: clamp(2.2rem, 5vw, 4.4rem);
}

.article-dek {
  margin-top: 22px;
  color: var(--muted);
  font-size: 1.12rem;
}

.article-body {
  margin-top: 38px;
}

.article-body h2 {
  margin-top: 42px;
  font-size: 1.75rem;
  font-weight: 850;
}

.article-body h3 {
  margin-top: 28px;
  font-size: 1.15rem;
  font-weight: 800;
}

.article-body p,
.article-body ul,
.article-body ol {
  margin-top: 18px;
  color: #d5dde8;
}

.article-body ul,
.article-body ol {
  padding-left: 22px;
}

.article-body li + li {
  margin-top: 8px;
}

.note-box {
  margin: 30px 0;
  padding: 22px;
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  color: #d9eef9;
}

.source-list a,
.article-body a {
  color: #7ed7ff;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-cta {
  margin-top: 48px;
  padding: 28px;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  background: rgba(13, 163, 230, 0.09);
}

.article-cta p {
  margin-top: 8px;
  color: var(--muted);
}

.article-cta .button-link {
  margin-top: 20px;
}

.related-posts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 24px;
}

.related-posts a {
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  text-decoration: none;
}

.related-posts a:hover {
  border-color: var(--border-strong);
  color: var(--accent);
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 34px 40px;
  color: var(--quiet);
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-inner a {
  color: var(--muted);
  text-decoration: none;
}

.footer-inner a:hover {
  color: var(--accent);
}

@media (max-width: 860px) {
  .nav-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 18px 22px;
  }

  .nav-links {
    width: 100%;
    flex-wrap: wrap;
    gap: 18px;
  }

  .nav-cta {
    display: none;
  }

  .page-hero,
  .content-wrap,
  .article-shell,
  .site-footer {
    padding-left: 22px;
    padding-right: 22px;
  }

  .blog-grid,
  .topic-strip,
  .related-posts {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}