:root{color-scheme:light dark;--paper:#fdfdfc;--paper-raised:#f4f4f1;--ink:#2b2b28;--ink-soft:#6b6b66;--hair-light:#e5e5e1;--steel:#3a5a7a;--rust:#9d5a2a;--night:#1a1a19;--night-raised:#232321;--chalk:#e3e3e0;--chalk-soft:#9a9a95;--hair-dark:#333330;--sky:#8fb4d4;--ember:#dda063;--bg-page:light-dark(var(--paper),var(--night));--bg-raised:light-dark(var(--paper-raised),var(--night-raised));--fg-primary:light-dark(var(--ink),var(--chalk));--fg-secondary:light-dark(var(--ink-soft),var(--chalk-soft));--fg-on-accent:light-dark(var(--paper),var(--night));--border-subtle:light-dark(var(--hair-light),var(--hair-dark));--link:light-dark(var(--steel),var(--sky));--active:light-dark(var(--rust),var(--ember));--bg-marked:color-mix(in srgb, var(--active) 7%, transparent);--font:system-ui, "PingFang SC", "Noto Sans CJK SC", "Hiragino Sans GB", sans-serif;--mono:ui-monospace, "SF Mono", Menlo, Consolas, monospace;--serif:"Songti SC", "Source Han Serif SC", "Noto Serif CJK SC", "SimSun", serif;--size:17px;--lh:1.85;--measure:34em;--gutter:1.2rem;--bar:2.6rem}body{padding-block-end:var(--bar)}.track{bottom:0;z-index:5;height:var(--bar);padding-bottom:env(safe-area-inset-bottom,0px);background:var(--bg-page);visibility:hidden;animation:linear both bar;animation-timeline:scroll(root);position:fixed;inset-inline:0}@keyframes bar{0%,to{visibility:visible}}.track:before{content:"";inset-inline:0;bottom:calc(.55rem + env(safe-area-inset-bottom,0px));border-top:1px solid var(--border-subtle);position:absolute}.bird{left:0;bottom:calc(.3rem + env(safe-area-inset-bottom,0px));font-family:var(--mono);white-space:pre;color:var(--fg-secondary);-webkit-user-select:none;user-select:none;pointer-events:none;margin:0;font-size:.8rem;line-height:1;animation:linear both fly;animation-timeline:scroll(root);position:absolute}@keyframes fly{0%{left:var(--gutter)}to{left:calc(100% - 5ch - var(--gutter))}}@supports not (animation-timeline:scroll()){.track{visibility:visible;animation:none}.bird{left:var(--gutter);animation:none}}.eye{display:inline-block;position:relative}.eye b{font-weight:inherit}.eye b:nth-child(2){opacity:0;position:absolute;top:0;left:0}@media (prefers-reduced-motion:no-preference){.eye b:first-child{animation:4.3s step-end infinite eye-open}.eye b:nth-child(2){animation:4.3s step-end infinite eye-shut}}@keyframes eye-open{0%,94%,to{opacity:1}94.5%,99.5%{opacity:0}}@keyframes eye-shut{0%,94%,to{opacity:0}94.5%,99.5%{opacity:1}}body{background:var(--bg-page);color:var(--fg-primary);font-family:var(--font);font-size:var(--size);line-height:var(--lh);text-autospace:normal;margin:0}header,main,footer{max-width:var(--measure);padding-inline:var(--gutter);margin-inline:auto}header .bar{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:1em 1.4em;display:flex}header nav{align-items:baseline;gap:1.2em;display:flex}#theme{cursor:pointer;color:var(--fg-secondary);background:0 0;border:0;padding:0;font-family:inherit;font-size:.88em;line-height:1}#theme:hover{color:var(--active)}#session{position:relative}#session>summary{cursor:pointer;color:var(--fg-secondary);line-height:1;list-style:none}#session>summary::-webkit-details-marker{display:none}#session>summary:hover,#session[open]>summary{color:var(--active)}#session .panel{inset-inline-end:0;z-index:5;background:var(--bg-raised);border:1px solid var(--border-subtle);flex-direction:column;align-items:start;gap:.1em;padding:.5em .8em;display:flex;position:absolute;top:calc(100% + .7em)}#session .panel .who{color:var(--fg-primary);white-space:nowrap;padding:.3em 0}#session .panel a,#session .panel button{color:var(--fg-secondary);font:inherit;white-space:nowrap;cursor:pointer;background:0 0;border:0;padding:.3em 0;text-decoration:none}#session .panel a:hover,#session .panel button:hover{color:var(--active)}#session .panel .gh{fill:currentColor;width:1.15em;height:1.15em;display:block}.brand{color:var(--fg-primary);letter-spacing:.04em;font-weight:600;text-decoration:none}footer{border-top:1px solid var(--border-subtle);margin-block-start:4em;padding-block:1.5em 3em;font-size:.9em}footer p{gap:1.2em;margin-block:.4em;display:flex}.muted{color:var(--fg-secondary)}header{z-index:4;background:var(--bg-page);border-block-end:1px solid #0000;padding-block:2rem 1rem;animation:linear both header-shrink;animation-timeline:scroll(root);animation-range:0 80px;position:sticky;top:0}@keyframes header-shrink{to{border-block-end-color:var(--border-subtle);padding-block:.7rem .6rem}}header nav a,footer a{color:var(--fg-secondary);text-decoration:none}header nav a:hover,footer a:hover{color:var(--active)}h1,h2,h3{text-wrap:balance;line-height:1.4}p{margin-block:1.4em}a{color:var(--link);text-underline-offset:.2em}a:hover{color:var(--active)}img{max-width:100%;height:auto}blockquote{border-inline-start:2px solid var(--border-subtle);color:var(--fg-secondary);margin-inline:0;padding-inline-start:1em}time{color:var(--fg-secondary);font-size:.9em}hr{border:0;border-top:1px solid var(--border-subtle);margin-block:2.5em}