:root {
  color-scheme: light;
  --bg: #f7f8fb;
  --fg: #1f2933;
  --muted: #5f6b7a;
  --card: #ffffff;
  --accent: #2ea3f2;
  --accent-2: #47516a;
  --border: #e3e7ee;
  font-family: "Roboto", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  min-height: 100vh;
}

a {
  color: var(--accent-2);
  text-decoration: none;
}
a:hover {
  color: var(--accent);
}

.shell {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.site-header {
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 4px 18px rgba(31, 41, 51, 0.08);
  z-index: 10;
}
.site-header .shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
}
.brand {
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--accent-2);
}
.nav {
  display: flex;
  gap: 1rem;
  font-size: 0.95rem;
}
.nav a {
  color: var(--accent-2);
  font-weight: 600;
}
.nav a:hover {
  color: var(--accent);
}

.hero {
  padding: 3rem 0 1rem;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  font-weight: 700;
  font-size: 0.75rem;
}
.hero h1 {
  margin: 0.25rem 0 0.5rem;
  font-size: clamp(2rem, 4vw, 3rem);
}
.lead {
  color: var(--muted);
  max-width: 700px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
  padding: 1rem 0 3rem;
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 1rem;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.06);
}
.card h2 {
  margin: 0;
  font-size: 1.1rem;
}
.card .desc {
  color: var(--muted);
  margin: 0;
}
.tag {
  color: var(--accent);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin: 0;
}
.meta {
  color: var(--muted);
  font-size: 0.9rem;
}

.article {
  padding: 2rem 0 3rem;
  max-width: 920px;
  margin: 0 auto;
}
.article h1 {
  margin-bottom: 0.25rem;
}
.article-body {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 1.5rem;
  border-radius: 12px;
  line-height: 1.7;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
}
.article-body h2,
.article-body h3 {
  margin-top: 1.5rem;
}
.article-body p {
  margin: 0.75rem 0;
}
.article-body ul,
.article-body ol {
  padding-left: 1.25rem;
}
.article-body img {
  max-width: 100%;
  display: block;
  border-radius: 8px;
  margin: 1rem auto;
}
.article-body a {
  color: var(--accent);
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
  color: var(--muted);
}