@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-cyrillic-ext-wght-normal.BOeWTOD4.woff2)format("woff2-variations");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-cyrillic-wght-normal.DqGufNeO.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-greek-ext-wght-normal.DlzME5K_.woff2)format("woff2-variations");unicode-range:U+1F??}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-greek-wght-normal.CkhJZR-_.woff2)format("woff2-variations");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-vietnamese-wght-normal.CBcvBZtf.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-latin-ext-wght-normal.DO1Apj_S.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-latin-wght-normal.Dx4kXJAl.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{--bg:#08090b;--bg-raised:#0e1014;--fg:#f0f1f3;--fg-dim:#f0f1f39e;--fg-faint:#f0f1f361;--line:#f0f1f31f;--line-strong:#f0f1f33d;--accent:#ff4b35;--accent-dim:#ff4b3529;--font-sans:"Inter Variable", "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;--font-cjk:"PingFang TC", "Microsoft JhengHei", "Noto Sans TC", "Hiragino Sans TC", sans-serif;--font-mono:ui-monospace, "SF Mono", "Cascadia Mono", "Roboto Mono", Menlo, monospace;--step--1:clamp(.72rem, .7rem + .1vw, .78rem);--step-0:clamp(.92rem, .89rem + .14vw, .96rem);--step-1:clamp(.98rem, .94rem + .22vw, 1.1rem);--step-2:clamp(1.15rem, 1.02rem + .55vw, 1.5rem);--step-3:clamp(1.4rem, 1.15rem + 1vw, 2rem);--step-4:clamp(2.1rem, 1.4rem + 3vw, 4.2rem);--weight-display:300;--weight-heading:400;--weight-strong:500;--gutter:clamp(1.25rem, 4vw, 4.5rem);--measure:62ch;--shell:1560px;--ease:cubic-bezier(.22, 1, .36, 1)}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:5rem}body{background:var(--bg);color:var(--fg);font-family:var(--font-sans);font-size:var(--step-0);font-synthesis-weight:none;-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;margin:0;line-height:1.6;overflow-x:hidden}:lang(zh) body,body:lang(zh){font-family:var(--font-sans), var(--font-cjk);line-height:1.85}h1,h2,h3,h4{font-weight:var(--weight-heading);letter-spacing:-.02em;text-wrap:balance;margin:0;line-height:1.14}:lang(zh) h1,:lang(zh) h2,:lang(zh) h3{letter-spacing:.01em;font-family:var(--font-sans), var(--font-cjk)}p{text-wrap:pretty;margin:0 0 1.1em}a{color:inherit;text-decoration:none}img,video{max-width:100%;height:auto;display:block}ul{margin:0;padding:0;list-style:none}button{font:inherit;color:inherit;cursor:pointer;background:0 0;border:0}:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}::selection{background:var(--accent);color:#fff}.shell{width:100%;max-width:var(--shell);padding-inline:var(--gutter);margin-inline:auto}.label{font-family:var(--font-mono);font-size:var(--step--1);letter-spacing:.12em;text-transform:uppercase;color:var(--fg-faint);font-weight:400}.section{border-top:1px solid var(--line);padding-block:clamp(4.5rem,10vw,9rem)}.section__head{align-items:baseline;gap:1rem;margin-bottom:clamp(2rem,5vw,3.5rem);display:flex}.section__title{font-size:var(--step-3)}.prose{max-width:var(--measure);color:var(--fg-dim)}.prose p:last-child{margin-bottom:0}.prose em{color:var(--fg);font-style:italic}.prose strong{color:var(--fg);font-weight:var(--weight-strong)}.link{color:var(--fg);transition:color .25s var(--ease);display:inline-block;position:relative}.link:after{content:"";transform-origin:0;width:100%;height:1px;transition:transform .35s var(--ease);background:currentColor;position:absolute;bottom:-.12em;left:0;transform:scaleX(0)}.link:hover{color:var(--accent)}.link:hover:after{transform:scaleX(1)}.skip-link{background:var(--accent);color:#fff;z-index:200;padding:.6rem 1rem;position:absolute;top:0;left:0;transform:translateY(-120%)}.skip-link:focus{transform:translateY(0)}.visually-hidden{clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.lang-switch[data-astro-cid-lemdd452]{font-family:var(--font-mono);font-size:var(--step--1);letter-spacing:.1em;color:var(--fg-dim);border:1px solid var(--line-strong);transition:color .25s var(--ease), border-color .25s var(--ease), background .25s var(--ease);border-radius:999px;padding:.3rem .75rem;line-height:1}.lang-switch[data-astro-cid-lemdd452]:hover{color:var(--fg);border-color:var(--accent);background:var(--accent-dim)}.site-header[data-astro-cid-nen7h5rs]{z-index:100;backdrop-filter:blur(14px);border-bottom:1px solid var(--line);transition:background .4s var(--ease), border-color .4s var(--ease);background:#08090bb8;position:fixed;inset:0 0 auto}.site-header[data-astro-cid-nen7h5rs][data-transparent]:not(.is-stuck){backdrop-filter:none;background:0 0;border-bottom-color:#0000}.site-header__inner[data-astro-cid-nen7h5rs]{justify-content:space-between;align-items:center;gap:1.5rem;min-height:4.25rem;display:flex}.site-header__brand[data-astro-cid-nen7h5rs]{font-weight:var(--weight-strong);letter-spacing:-.01em;font-size:var(--step-1);transition:color .25s var(--ease)}.site-header__brand[data-astro-cid-nen7h5rs]:hover{color:var(--accent)}.site-header__nav[data-astro-cid-nen7h5rs]{align-items:center;gap:clamp(1.5rem,3vw,2.75rem);display:flex}.site-header__list[data-astro-cid-nen7h5rs]{gap:clamp(1.5rem,3vw,2.75rem);display:flex}.site-header__list[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs]{font-size:var(--step-0);color:var(--fg-dim)}.site-header__list[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs]:hover{color:var(--accent)}.site-header__toggle[data-astro-cid-nen7h5rs]{place-items:center;width:2.75rem;height:2.75rem;margin-right:-.75rem;display:none}.site-header__bars[data-astro-cid-nen7h5rs],.site-header__bars[data-astro-cid-nen7h5rs]:before,.site-header__bars[data-astro-cid-nen7h5rs]:after{background:var(--fg);width:22px;height:1.5px;transition:transform .35s var(--ease), opacity .2s linear;display:block}.site-header__bars[data-astro-cid-nen7h5rs]{position:relative}.site-header__bars[data-astro-cid-nen7h5rs]:before,.site-header__bars[data-astro-cid-nen7h5rs]:after{content:"";position:absolute;left:0}.site-header__bars[data-astro-cid-nen7h5rs]:before{top:-7px}.site-header__bars[data-astro-cid-nen7h5rs]:after{top:7px}.site-header__toggle[data-astro-cid-nen7h5rs][aria-expanded=true] .site-header__bars[data-astro-cid-nen7h5rs]{background:0 0}.site-header__toggle[data-astro-cid-nen7h5rs][aria-expanded=true] .site-header__bars[data-astro-cid-nen7h5rs]:before{transform:translateY(7px)rotate(45deg)}.site-header__toggle[data-astro-cid-nen7h5rs][aria-expanded=true] .site-header__bars[data-astro-cid-nen7h5rs]:after{transform:translateY(-7px)rotate(-45deg)}.site-menu[data-astro-cid-nen7h5rs]{display:none}@media (width<=720px){.site-header__nav[data-astro-cid-nen7h5rs]{display:none}.site-header__toggle[data-astro-cid-nen7h5rs]{display:grid}.site-menu[data-astro-cid-nen7h5rs]{padding:2rem var(--gutter) 3rem;border-top:1px solid var(--line);backdrop-filter:blur(14px);background:#08090bf5;flex-direction:column;gap:2rem;display:flex}.site-menu[data-astro-cid-nen7h5rs][hidden]{display:none}.site-menu__list[data-astro-cid-nen7h5rs]{flex-direction:column;gap:1.25rem;display:flex}.site-menu__list[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs]{font-size:var(--step-2);font-weight:var(--weight-heading);letter-spacing:-.015em}}.site-footer[data-astro-cid-jo6i4kqk]{border-top:1px solid var(--line);padding-block:2.5rem 3.5rem}.site-footer__inner[data-astro-cid-jo6i4kqk]{font-family:var(--font-mono);font-size:var(--step--1);letter-spacing:.06em;color:var(--fg-faint);flex-wrap:wrap;justify-content:space-between;gap:1rem;display:flex}