:root{--ark-ink:#080a0b;--ark-ink-soft:#0e1113;--ark-ink-raised:#15191c;--ark-paper:#f4f6f6;--ark-paper-raised:#fff;--ark-signal:#18d1ff;--ark-signal-deep:#007e9e;--ark-state:#c8eb21;--ark-muted:#596268;--ark-muted-on-dark:#a8b0b4;--ark-line:#080a0b2e;--ark-line-strong:#f4f6f633;--font-cjk:"Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei UI", "PingFang SC", sans-serif;--font-display:"Arial Narrow", "Roboto Condensed", "DIN Condensed", var(--font-cjk);--font-tech:"Arial Narrow", "Roboto Condensed", system-ui, sans-serif;--font-mono:"IBM Plex Mono", "SFMono-Regular", Consolas, monospace;--topbar-size:4rem;--topbar-mobile:3.5rem;--rail-size:6.2rem;--mobile-rail-size:3.8rem;--content-max:94rem;--page-gutter:clamp(1rem, 3.4vw, 4.5rem);--stage-grid-opacity:.6}[data-ark-depth=complex]{--stage-grid-opacity:.6;--section-space:clamp(6rem, 12vw, 11rem)}*{box-sizing:border-box;margin:0;padding:0}html{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;scroll-behavior:smooth;scroll-padding-top:calc(var(--topbar-size) + 1rem);background:var(--ark-paper)}body{min-width:320px;color:var(--ark-ink);background:var(--ark-paper);font-family:var(--font-cjk);text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased}body::selection{color:var(--ark-ink);background:var(--ark-signal)}a{color:inherit;text-decoration:none}button,a{-webkit-tap-highlight-color:transparent}:focus-visible{outline:2px solid var(--ark-signal);outline-offset:3px}img,video,svg{max-width:100%;display:block}button,input,textarea,select{font:inherit}@media (max-width:720px){html{scroll-padding-top:calc(var(--topbar-mobile) + 1rem)}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}