* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  background: #0b1120;
  color: #e5e7eb;
}

a {
  color: #fbbf24;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1rem;
}

.site-header {
  background: rgba(15, 23, 42, 0.95);
  border-bottom: 1px solid rgba(148, 163, 184, 0.4);
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 0;
}

.logo a {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.main-nav a {
  margin-left: 1rem;
  font-size: 0.94rem;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  border: 1px solid transparent;
}

.main-nav a:hover,
.main-nav a.active {
  border-color: rgba(251, 191, 36, 0.7);
  background: rgba(15, 23, 42, 0.8);
}

.hero {
  background: radial-gradient(circle at top, #1e293b 0, #020617 55%, #020617 100%);
  padding: 3rem 0 2.5rem;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.hero h1 {
  font-size: 2.2rem;
  margin-bottom: 0.5rem;
}

.hero p {
  max-width: 700px;
  color: #e5e7eb;
}

.section {
  padding: 2.5rem 0;
}

.section h2 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.blog-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 1.5rem;
}

.blog-card {
  background: rgba(15, 23, 42, 0.95);
  border-radius: 1rem;
  padding: 1.4rem 1.4rem 1.2rem;
  border: 1px solid rgba(148, 163, 184, 0.45);
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.9);
}

.blog-card h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.btn {
  display: inline-block;
  margin-top: 0.3rem;
  padding: 0.5rem 1.1rem;
  border-radius: 999px;
  border: 1px solid #fbbf24;
  font-size: 0.9rem;
}

.btn:hover {
  background: #fbbf24;
  color: #111827;
  text-decoration: none;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(220px, 1fr);
  gap: 2rem;
  padding: 2.5rem 0;
}

.blog-main h1 {
  margin-top: 0;
}

.blog-main h2,
.blog-main h3 {
  margin-top: 1.6rem;
}

.sidebar {
  background: rgba(15, 23, 42, 0.95);
  border-radius: 1rem;
  padding: 1.2rem;
  border: 1px solid rgba(148, 163, 184, 0.5);
  height: fit-content;
  position: sticky;
  top: 5rem;
}

.sidebar h2 {
  font-size: 1rem;
  margin-top: 0;
  margin-bottom: 0.8rem;
}

.sidebar ul {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.sidebar li {
  margin-bottom: 0.6rem;
}

.sidebar a {
  font-size: 0.92rem;
}

.page-heading {
  padding: 2.5rem 0 1rem;
}

.page-heading h1 {
  margin: 0 0 0.6rem;
}

.card {
  background: rgba(15, 23, 42, 0.95);
  border-radius: 1rem;
  padding: 1.5rem;
  border: 1px solid rgba(148, 163, 184, 0.5);
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.9);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
}

.contact-item h3 {
  margin-top: 0;
  margin-bottom: 0.4rem;
  font-size: 1rem;
}

.contact-item p {
  margin: 0;
}

.footer {
  border-top: 1px solid rgba(148, 163, 184, 0.4);
  padding: 1.5rem 0;
  margin-top: 2rem;
  font-size: 0.85rem;
  color: #9ca3af;
}

.footer a {
  font-size: 0.85rem;
}

small {
  display: block;
  margin-top: 0.3rem;
}

@media (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
  }

  .main-nav a {
    margin-left: 0.4rem;
  }

  .hero {
    padding-top: 2.2rem;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }
}