:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;--line:color-mix(in srgb, currentColor 20%, transparent)}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial}}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Hiragino Sans,Noto Sans JP,sans-serif;line-height:1.7}.app-nav{border-bottom:1px solid var(--line);align-items:center;gap:1.5rem;padding:.75rem 1.5rem;display:flex}.app-nav__brand{font-weight:700;text-decoration:none}.app-nav__links{align-items:center;gap:1rem;margin-left:auto;display:flex}.app-nav__user{opacity:.7;font-size:.875rem}.page{max-width:56rem;margin:0 auto;padding:2rem 1.5rem}.card{border:1px solid var(--line);border-radius:.5rem;padding:1.5rem}.button{border:1px solid var(--line);border-radius:.375rem;padding:.6rem 1.2rem;font-weight:600;text-decoration:none;display:inline-block}.error{color:#b91c1c}