:root{--color-primary:#60a5fa;--color-primary-hover:#3b82f6;--color-bg:#0f172a;--color-surface:#1e293b;--color-surface-2:#334155;--color-border:#334155;--color-text:#e2e8f0;--color-text-muted:#94a3b8;--color-danger:#f87171;--radius:8px;--font-sans:system-ui,-apple-system,"Segoe UI","Hiragino Kaku Gothic ProN","Noto Sans JP",Meiryo,sans-serif}*{box-sizing:border-box}body,html{margin:0;padding:0}body{background:var(--color-bg);color:var(--color-text);font-family:var(--font-sans);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--color-primary);text-decoration:none}a:hover{color:var(--color-primary-hover)}button{font-family:inherit}