:root{--bg: #ffffff;--surface: #f7f7f5;--surface-2: #efefea;--text: #14130f;--text-muted: #57564f;--text-faint: #66645c;--border: rgba(0, 0, 0, .09);--border-strong: rgba(0, 0, 0, .16);--accent: #185fa5;--accent-text: #0c447c;--accent-bg: #e8f1fb;--accent-soft: #f0f6fd;--radius: 8px;--radius-lg: 14px;--maxw: 720px;--maxw-wide: 960px;--font-sans: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", "Segoe UI", sans-serif;--font-mono: "SFMono-Regular", ui-monospace, Menlo, Consolas, monospace}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-sans);line-height:1.8;font-size:16px;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}a{color:var(--accent);text-underline-offset:3px}a:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}.container{max-width:var(--maxw);margin:0 auto;padding:0 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