:root{--background: 236 75% 98%;--foreground: 225 48% 11%;--card: 240 5% 98%;--border: 240 6% 90%;--muted-foreground: 225 48% 11%;--primary: 250 36% 25%;--primary-foreground: 0 0% 100%;--destructive: 0 84% 48%;--radius: .5rem}*{box-sizing:border-box}body{margin:0;background:hsl(var(--background));color:hsl(var(--foreground));font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.shell{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:24px;max-width:480px;margin:0 auto;padding:24px 16px}.brand{display:block;width:100%;max-width:220px;height:auto}.card{width:100%;background:hsl(var(--card));border:1px solid hsl(var(--border));border-radius:var(--radius);padding:24px}h1{font-size:1.5rem;margin:0 0 8px}.muted{color:hsl(var(--muted-foreground) / .7);margin:0 0 16px}.small{font-size:.875rem}.amount{font-size:2rem;font-weight:600;margin:8px 0}.notice{color:hsl(var(--muted-foreground))}.error{color:hsl(var(--destructive));margin:12px 0 0}button{width:100%;margin-top:16px;padding:12px 16px;border:none;border-radius:var(--radius);background:hsl(var(--primary));color:hsl(var(--primary-foreground));font-size:1rem;font-weight:500;cursor:pointer}button:disabled{opacity:.6;cursor:not-allowed}