:root{--color-text-primary:#1a1a1a;--color-text-secondary:#4a5568;--color-text-tertiary:#94a3b8;--color-text-danger:#dc2626;--color-text-warning:#d97706;--color-text-success:#059669;--color-text-info:#2563eb;--color-background-primary:#fff;--color-background-secondary:#f8fafc;--color-background-danger:#fef2f2;--color-background-warning:#fffbeb;--color-background-success:#f0fdf4;--color-background-info:#eff6ff;--color-border-tertiary:#e2e8f0;--color-border-secondary:#cbd5e1;--color-border-info:#93c5fd;--color-border-warning:#fcd34d;--color-border-success:#86efac;--color-border-danger:#fca5a5;--border-radius-md:6px;--border-radius-lg:12px;--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI","Hiragino Sans","Hiragino Kaku Gothic ProN",Meiryo,sans-serif;--font-mono:ui-monospace,"SF Mono",Monaco,Consolas,"Roboto Mono",monospace}*{box-sizing:border-box}body,html{margin:0;padding:0;font-family:var(--font-sans);background:var(--color-background-secondary);color:var(--color-text-primary);font-size:14px;line-height:1.6;-webkit-font-smoothing:antialiased}main{max-width:800px;margin:0 auto;padding:0 1rem;min-height:100vh}button{background:var(--color-background-info);color:var(--color-text-info);border:.5px solid var(--color-border-info);cursor:pointer;font-family:var(--font-sans);transition:opacity .15s ease}button:hover:not(:disabled){opacity:.85}button:disabled{cursor:not-allowed}a{transition:opacity .15s ease}a:hover{opacity:.85}textarea:focus{border-color:var(--color-border-info)!important}