:root{--color-primary:#6366f1;--color-primary-hover:#4f46e5;--color-accent:#f59e0b;--color-background:#fff;--color-surface:#f9fafb;--color-border:#e5e7eb;--color-text:#111827;--color-text-muted:#6b7280;--color-text-inverse:#fff;--font-heading:"Inter", sans-serif;--font-body:"Inter", sans-serif;--radius-sm:.375rem;--radius-md:.5rem;--radius-lg:.75rem;--radius-xl:1rem;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000001a, 0 2px 4px -2px #0000001a;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -4px #0000001a;--header-height:64px;--container-max:1280px;--container-padding:1.5rem}*{box-sizing:border-box}body{font-family:var(--font-body);color:var(--color-text);background:var(--color-background)}.theme-btn-primary{background:var(--color-primary);color:var(--color-text-inverse);border-radius:var(--radius-md);cursor:pointer;border:none;justify-content:center;align-items:center;gap:.5rem;padding:.625rem 1.25rem;font-size:.875rem;font-weight:500;text-decoration:none;transition:background .15s;display:inline-flex}.theme-btn-primary:hover{background:var(--color-primary-hover)}.theme-btn-secondary{color:var(--color-text);border:1px solid var(--color-border);border-radius:var(--radius-md);cursor:pointer;background:0 0;justify-content:center;align-items:center;gap:.5rem;padding:.625rem 1.25rem;font-size:.875rem;font-weight:500;text-decoration:none;transition:background .15s,border-color .15s;display:inline-flex}.theme-btn-secondary:hover{background:var(--color-surface)}.theme-container{max-width:var(--container-max);padding:0 var(--container-padding);margin:0 auto}.theme-card{background:var(--color-background);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm)}