*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--font-sans:"Hiragino Kaku Gothic Pro","メイリオ","Yu Gothic",sans-serif;--color-bg-primary:#0a0a14;--color-bg-secondary:#12121f;--color-bg-tertiary:#1a1a2e;--color-surface:#1e1e32;--color-surface-elevated:#252542;--color-text-primary:#f1f5f9;--color-text-secondary:#94a3b8;--color-text-muted:#64748b;--color-border:rgba(255,255,255,0.08);--color-border-subtle:rgba(255,255,255,0.04);--color-accent:#60a5fa;--color-accent-hover:#3b82f6;--color-success:#34d399;--color-error:#f87171;--color-warning:#fbbf24}body,html{height:100%;font-family:var(--font-sans);background:var(--color-bg-primary);color:var(--color-text-primary);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--color-bg-secondary)}::-webkit-scrollbar-thumb{background:var(--color-surface-elevated);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--color-text-muted)}::selection{background:rgba(96,165,250,.3);color:var(--color-text-primary)}:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}::placeholder{color:var(--color-text-muted)}