:root{--color-primary:#2563eb;--color-primary-hover:#1d4ed8;--color-primary-light:#dbeafe;--color-secondary:#7c3aed;--color-background:#fff;--color-foreground:#171717;--color-muted:#6b7280;--color-border:#e5e7eb;--color-surface:#f9fafb;--color-success:#22c55e;--color-warning:#f59e0b;--color-error:#ef4444;--font-sans:var(--font-noto-sans-jp), "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;--font-size-xs:.75rem;--font-size-sm:.875rem;--font-size-base:1rem;--font-size-lg:1.125rem;--font-size-xl:1.25rem;--font-size-2xl:1.5rem;--font-size-3xl:2rem;--font-size-4xl:2.5rem;--font-weight-normal:400;--font-weight-medium:500;--font-weight-bold:700;--line-height-tight:1.25;--line-height-normal:1.7;--line-height-relaxed:1.8;--spacing-xs:4px;--spacing-sm:8px;--spacing-md:16px;--spacing-lg:24px;--spacing-xl:32px;--spacing-2xl:48px;--spacing-3xl:64px;--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--radius-full:9999px;--container-default:1200px;--container-narrow:800px;--container-wide:1440px;--max-width:1200px;--shadow-sm:0 1px 2px #0000000d;--shadow-md:0 4px 6px #00000012;--shadow-lg:0 10px 15px #0000001a;--transition-fast:.15s ease;--transition-normal:.25s ease}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{height:100%}html,body{max-width:100vw;overflow-x:hidden}body{min-height:100%;color:var(--color-foreground);background:var(--color-background);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;flex-direction:column;line-height:1.7;display:flex}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}