:root{--primary:#1d4f3a;--secondary:#2f6b4f;--accent:#b7822a;--background:#f7f7f2;--surface:#fff;--surface-muted:#ecede6;--text-primary:#18211d;--text-muted:#5b655f;--border:#d5d8cd;--error:#b42318;--max-width:1120px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--background);color:var(--text-primary);margin:0;font-family:Noto Sans JP,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.8}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--accent);outline-offset:3px}.site-header{-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:color-mix(in srgb, var(--surface) 92%, transparent);border-bottom:1px solid var(--border);height:76px;padding:0 max(24px, calc((100vw - var(--max-width)) / 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