:root {
  color: #0e1726;
  background-color: #eef1f6;
  font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, rgba(62, 146, 255, 0.12), transparent 45%), #eef1f6;
  color: inherit;
}

.site-shell {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
}

.site-header {
  padding: 0.85rem 1.5rem;
  background: rgba(238, 241, 246, 0.92);
  color: #0f172a;
  border-bottom: 1px solid rgba(15, 23, 42, 0.12);
  backdrop-filter: blur(10px);
}

.header-inner {
  max-width: 900px;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.site-home {
  color: inherit;
  text-decoration: none;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.site-home:hover,
.site-home:focus-visible {
  text-decoration: underline;
}

.site-main {
  flex: 1;
  padding: 0 1.5rem 3rem;
}

.content {
  max-width: 960px;
  margin: 0 auto;
  background: #ffffff;
  border-radius: 20px;
  padding: 2.5rem;
  box-shadow: 0 30px 80px rgba(15, 23, 42, 0.18);
  overflow: hidden;
}

.content h1,
.content h2,
.content h3 {
  margin-top: 1.6rem;
  margin-bottom: 0.5rem;
  color: #0f172a;
}

.content p + p {
  margin-top: 1rem;
}

.content ol,
.content ul {
  padding-left: 1.35rem;
  margin-top: 1rem;
}

.content li + li {
  margin-top: 0.4rem;
}

.content code {
  background: #0f172a;
  color: #f8fafc;
  padding: 0.2rem 0.35rem;
  border-radius: 4px;
  font-size: 0.92rem;
}

.content img {
  max-width: 100%;
  height: auto;
}

.site-footer {
  padding: 1.5rem;
  text-align: center;
  font-size: 0.9rem;
  color: rgba(15, 23, 42, 0.7);
}

@media (max-width: 640px) {
  .site-header {
    padding: 0.75rem 1rem;
  }

  .site-main {
    padding: 0 1rem 2.5rem;
  }

  .content {
    padding: 2rem;
  }
}