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

body {
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-body);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  height: var(--header-height);
  padding: 0 1.5rem;
  background: var(--bg-header);
  color: var(--text-inverse);
  box-shadow: var(--shadow-md);
}

.site-header .logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
  font-weight: 700;
  font-size: 1.1rem;
}

.site-header .logo svg { height: 32px; width: auto; }

.site-header .logo-badge {
  background: var(--brand-accent);
  color: var(--text-inverse);
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: 2rem;
}

.site-header nav a {
  color: var(--text-inverse);
  opacity: 0.7;
  text-decoration: none;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  transition: opacity 0.15s, background 0.15s;
}

.site-header nav a:hover { opacity: 1; background: rgba(255,255,255,0.1); }
.site-header nav a.active { opacity: 1; background: rgba(255,255,255,0.15); }

.site-header .header-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem;
}

.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.page-subtitle {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.site-footer {
  text-align: center;
  padding: 2rem 1.5rem;
  color: var(--text-muted);
  font-size: 12px;
  border-top: 1px solid var(--border-color);
  margin-top: 3rem;
}

@media (max-width: 768px) {
  .container { padding: 1rem; }
  .site-header nav { display: none; }
  .site-header .logo-badge { display: none; }
}