:root{--background:#ffffff;--foreground:#171717;--nav-height:56px;--nav-offset:calc(var(--nav-height) + 16px);--content-max:900px;--content-left:max(16px,calc((100vw - var(--content-max)) / 2));--fs-xs:0.85rem;--fs-sm:0.95rem;--fs-md:1.10rem;--fs-lg:1.25rem;--c-text:#ffffff;--c-text-dim:rgba(255,255,255,0.85);--c-border:color-mix(in srgb,#ffffff 20%,transparent);--c-border-soft:color-mix(in srgb,#ffffff 16%,transparent);--c-card-bg:color-mix(in srgb,#ffffff 3%,transparent);--c-primary-bg:color-mix(in srgb,#ffffff 10%,transparent);--c-hover:#18181c;--sp-2:0.125rem;--sp-4:0.25rem;--sp-6:0.375rem;--sp-8:0.5rem;--sp-10:0.625rem;--sp-12:0.75rem;--sp-16:1rem;--sp-20:1.25rem;--sp-24:1.5rem;--sp-32:2rem}@media (prefers-color-scheme:dark){:root{--background:#0a0a0a;--foreground:#ededed}}body,html{max-width:100vw;overflow-x:hidden;color:var(--c-text)}.section+.section{margin-top:2.5rem}body{color:var(--foreground);background:var(--background);font-family:Arial,Helvetica,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box;padding:0;margin:0}a{color:inherit;text-decoration:none}@media (prefers-color-scheme:dark){html{color-scheme:dark}}html{scroll-behavior:smooth}select option{color:#111!important;background-color:#fff!important}select option:checked,select option:hover{color:#fff!important;background-color:#2b6fff!important}select option:disabled{color:#999!important}input[type=number]::-webkit-inner-spin-button,input[type=number]::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}input[type=number]{-moz-appearance:textfield;-webkit-appearance:none;appearance:textfield}