:root{--color-background-primary: #ffffff;--color-background-secondary: #f8f9fa;--color-background-danger: #fef2f2;--color-text-primary: #111827;--color-text-secondary: #6b7280;--color-text-tertiary: #9ca3af;--color-text-danger: #dc2626;--color-border-primary: #d1d5db;--color-border-secondary: #e5e7eb;--color-border-tertiary: #f3f4f6;--border-radius-md: 8px;--border-radius-lg: 12px;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Yu Gothic UI", sans-serif;--font-serif: "Noto Serif JP", "游明朝", "Yu Mincho", "ヒラギノ明朝 Pro", serif}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{background:#f0f0f0;min-height:100vh;font-family:var(--font-sans);-webkit-font-smoothing:antialiased}