:root{--color-bg-primary:#0d0d0f;--color-bg-secondary:#1a1a1d;--color-bg-card:hsla(0,0%,100%,.03);--color-border:hsla(0,0%,100%,.08);--color-border-strong:#1a1a1a;--color-text-primary:#ededed;--color-text-secondary:#888;--color-text-muted:#666;--color-accent:#667eea;--color-accent-2:#764ba2;--header-height:72px}*,:after,:before{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--color-bg-primary);color:var(--color-text-primary);padding-top:var(--header-height);-webkit-font-smoothing:antialiased}.sidebar-desktop{display:block}.sidebar-mobile-toggle,.sidebar-nav-drawer{display:none}@media (max-width:768px){.sidebar-desktop{display:none}.sidebar-mobile-toggle{display:flex;align-items:center;justify-content:center;position:fixed;bottom:1.5rem;right:1.5rem;z-index:200;background:linear-gradient(135deg,#667eea,#764ba2);border:none;border-radius:50%;width:48px;height:48px;color:#fff;font-size:1.125rem;cursor:pointer;box-shadow:0 4px 20px rgba(102,126,234,.4)}.sidebar-nav-drawer{position:fixed;inset:0;z-index:150;background:rgba(0,0,0,.75);align-items:flex-end;padding:1rem}.sidebar-nav-drawer.open{display:flex}.sidebar-nav-inner{background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:16px;padding:1.25rem;width:100%}}.header-nav-links{display:flex;gap:2rem;align-items:center}@media (max-width:640px){.header-nav-links{display:none}}