:root{--bg:#f7f6f2;--fg:#1a1a1a;--accent:#4a6dff;--muted:#888}*{box-sizing:border-box}html,body,#root{background:var(--bg);height:100%;color:var(--fg);-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent;overscroll-behavior:none;margin:0;font-family:-apple-system,BlinkMacSystemFont,Hiragino Sans,Noto Sans JP,sans-serif}button{font:inherit;background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:8px;padding:12px 24px}button:disabled{background:var(--muted);cursor:not-allowed}.page{text-align:center;flex-direction:column;justify-content:center;align-items:center;min-height:100%;padding:24px;display:flex}.page h1{margin:0 0 16px;font-size:1.4rem}.page p{color:#555;line-height:1.7}