:root{color-scheme:dark light;--color-bg: #0f172a;--color-bg-elev: #1e293b;--color-fg: #e2e8f0;--color-fg-muted: #94a3b8;--color-accent: #22d3ee;--color-accent-strong: #06b6d4;--color-border: #334155;--color-danger: #f87171;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--shadow-md: 0 4px 16px rgba(0, 0, 0, .18);--font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif}*,*:before,*:after{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:var(--font-sans);background-color:var(--color-bg);color:var(--color-fg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.5}a{color:var(--color-accent);text-decoration:none}a:hover,a:focus-visible{color:var(--color-accent-strong);text-decoration:underline}button{font-family:inherit;cursor:pointer}:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px;border-radius:4px}.app-shell{display:grid;grid-template-rows:auto 1fr auto;min-height:100vh}.app-header{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;background-color:var(--color-bg-elev);border-bottom:1px solid var(--color-border);position:sticky;top:0;z-index:10}.app-header__brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.1rem;color:var(--color-fg)}.app-header__brand-mark{width:28px;height:28px;border-radius:6px;background:linear-gradient(135deg,var(--color-accent),#6366f1);display:grid;place-items:center;color:#0f172a;font-weight:800}.app-header__nav{display:flex;gap:4px;flex-wrap:wrap}.app-header__nav a{padding:6px 12px;border-radius:var(--radius-sm);color:var(--color-fg-muted);font-size:.95rem;text-decoration:none}.app-header__nav a:hover,.app-header__nav a:focus-visible{color:var(--color-fg);background-color:#94a3b81a;text-decoration:none}.app-header__nav a[aria-current=page]{color:var(--color-fg);background-color:#22d3ee26}.app-main{padding:24px 20px;max-width:1100px;width:100%;margin:0 auto}.app-footer{padding:12px 20px;border-top:1px solid var(--color-border);color:var(--color-fg-muted);font-size:.85rem;text-align:center}.page{display:flex;flex-direction:column;gap:16px}.page__title{font-size:1.6rem;font-weight:700;margin:0}.page__subtitle{color:var(--color-fg-muted);margin:0}.card{background-color:var(--color-bg-elev);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:16px;box-shadow:var(--shadow-md)}.stack{display:flex;flex-direction:column;gap:12px}.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.muted{color:var(--color-fg-muted)}.badge{display:inline-flex;align-items:center;padding:2px 8px;border-radius:999px;font-size:.75rem;background-color:#22d3ee1f;color:var(--color-accent);border:1px solid rgba(34,211,238,.3)}@media(max-width:640px){.app-header{flex-direction:column;align-items:flex-start;gap:8px}.app-main{padding:16px 12px}}