:root{--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-7: 2rem;--space-8: 2.5rem;--radius-sm: .5rem;--radius-md: .75rem;--radius-lg: 1rem;--surface-1: #ffffff;--surface-2: #f8fafc;--surface-3: #f1f5f9;--text-1: #0f172a;--text-2: #475569;--text-3: #64748b;--line-subtle: #e2e8f0;--shadow-card: 0 8px 24px rgba(15, 23, 42, .08);--shadow-modal: 0 24px 48px rgba(15, 23, 42, .2)}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:Inter,Segoe UI,system-ui,sans-serif;background:#f5f7fb;color:var(--text-1);line-height:1.4}button,input,select,textarea{font:inherit}.u-card{background:var(--surface-1);border-radius:var(--radius-lg);box-shadow:var(--shadow-card)}.u-stack-sm>*+*{margin-top:var(--space-2)}.u-stack-md>*+*{margin-top:var(--space-4)}.u-stack-lg>*+*{margin-top:var(--space-6)}.u-row{display:flex;align-items:center;gap:var(--space-3)}.u-row-between{display:flex;align-items:center;justify-content:space-between;gap:var(--space-3)}.u-grid-auto{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:var(--space-3)}