:root{--color-bg:#0a0a0a;--color-fg:#f5f5f5;--color-accent:#f5a623;--color-muted:#888;--color-success:#4ade80;--color-error:#f87171;--safe-top:env(safe-area-inset-top,0px);--safe-bottom:env(safe-area-inset-bottom,0px)}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}body,html{margin:0;padding:0;background:var(--color-bg);color:var(--color-fg);font-family:Be Vietnam Pro,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased;overscroll-behavior:none}body{min-height:100vh;min-height:100dvh}a{color:var(--color-accent);text-decoration:none}a:hover{text-decoration:underline}button{font-family:inherit;cursor:pointer;border:none;background:var(--color-accent);color:#000;padding:.75rem 1.5rem;border-radius:.5rem;font-weight:600;font-size:1rem}button:active{transform:scale(.98)}button:disabled{opacity:.5;cursor:not-allowed}.container{max-width:640px;margin:0 auto;padding:calc(1rem + var(--safe-top)) 1rem calc(1rem + var(--safe-bottom))}