:root{color-scheme:light;--bg:#f0eee6;--bg-elevated:#faf9f5;--bg-soft:#e8e6dc;--fg:#1f1e1d;--fg-body:#1f1e1d;--fg-muted:#5e5d59;--fg-faint:#87867f;--border:#d1cfc5;--border-soft:#b0aea5;--narrow:42rem;--page-pad-x:1.5rem;--section-gap:2.5rem;--list-gap:.8em;--font-serif-latin:var(--font-newsreader), "Times New Roman", "PT Serif", Georgia, Times, serif;--font-serif-cjk:var(--font-noto-serif-sc), "Songti SC", "STSongti-SC-Regular", "STSong", "Source Han Serif SC", "Noto Serif CJK SC", "SimSun", "宋体", serif;--font-serif:var(--font-serif-latin), var(--font-serif-cjk);--font-size-body:1.25rem;--line-height-body:1.6;--font-size-body-zh:1.1875rem;--line-height-body-zh:1.75;--font-size-h1:3.1em;--font-size-h2:1.6em;--font-size-h3:1.2em;--font-size-header-name:1.44em;--font-size-meta:.9em;--letter-spacing-zh-title:.04em;--letter-spacing-zh-heading:.06em;--letter-spacing-zh-body:.02em;--ease-color:.2s linear;--loader:var(--fg-muted);--loader-faint:var(--fg-faint);--loader-ink:var(--fg)}html.u-mode-invert{color-scheme:dark;--bg:#1f1e1d;--bg-elevated:#3d3d3a;--bg-soft:#3d3d3a;--fg:#f0eee6;--fg-body:#f0eee6;--fg-muted:#b0aea5;--fg-faint:#87867f;--border:#5e5d59;--border-soft:#3d3d3a}html[data-lang=zh]{--font-serif:var(--font-serif-cjk), var(--font-serif-latin);--font-size-body:var(--font-size-body-zh);--line-height-body:var(--line-height-body-zh);--list-gap:.7em;--font-size-h2:1.45em;--font-size-h3:1.15em;--font-size-header-name:1.32em}.prose{color:var(--fg-body)}.prose>:first-child{margin-top:0}.prose>:last-child{margin-bottom:0}.prose p{margin:0 0 1em}.prose h2{color:var(--fg);font-size:var(--font-size-h2);margin:1.75em 0 .5em;font-weight:600;line-height:1.2}.prose h3{color:var(--fg);font-size:var(--font-size-h3);margin:1.5em 0 .45em;font-weight:600;line-height:1.25}.prose h4{color:var(--fg);margin:1.25em 0 .4em;font-size:1.05em;font-weight:600}html[data-lang=zh] .prose{letter-spacing:var(--letter-spacing-zh-body);line-height:var(--line-height-body-zh);text-align:justify;text-justify:inter-ideograph}html[data-lang=zh] .prose p{margin-bottom:1.35em}html[data-lang=zh] .prose h2{letter-spacing:var(--letter-spacing-zh-heading);margin-top:2em;margin-bottom:.75em;font-weight:600;line-height:1.35}html[data-lang=zh] .prose h3{letter-spacing:var(--letter-spacing-zh-heading);margin-top:1.75em;margin-bottom:.65em;font-weight:600;line-height:1.4}html[data-lang=zh] .prose h4{letter-spacing:var(--letter-spacing-zh-body);font-weight:600}.prose ul,.prose ol{margin:0 0 1em;padding-left:1.35em}.prose li{margin-bottom:.35em}.prose li>ul,.prose li>ol{margin-top:.35em;margin-bottom:0}.prose blockquote{border-left:2px solid var(--border);color:var(--fg-muted);margin:0 0 1em;padding:.15em 0 .15em 1em}.prose blockquote p:last-child{margin-bottom:0}html[data-lang=zh] .prose blockquote{color:var(--fg-muted);border-left-width:3px;margin-left:.15em;padding-left:1.1em;font-style:normal}.prose strong{color:var(--fg);font-weight:700}.prose em{font-style:italic}html[data-lang=zh] .prose em{color:var(--fg);font-style:normal;font-weight:400}html[data-lang=zh] .prose strong{font-synthesis:none;color:var(--fg);letter-spacing:.03em;font-family:inherit;font-weight:700}html[data-lang=zh] .prose li{margin-bottom:.45em;line-height:1.7}html[data-lang=zh] .prose code{letter-spacing:0;font-family:ui-monospace,Cascadia Code,SF Mono,Menlo,Consolas,Microsoft YaHei,PingFang SC,monospace}.prose a{color:var(--fg);text-underline-offset:.15em;text-decoration:underline}.prose a:hover{color:var(--fg-muted)}.prose hr{border:0;border-top:1px solid var(--border);margin:2em 0}.prose code{background:var(--bg-elevated);border-radius:.25em;padding:.1em .35em;font-family:ui-monospace,Cascadia Code,SF Mono,Menlo,Consolas,monospace;font-size:.88em}.prose pre{background:var(--bg-elevated);border-radius:.35em;margin:0 0 1em;padding:1em 1.1em;font-size:.9em;line-height:1.5;overflow-x:auto}.prose pre code{font-size:inherit;background:0 0;padding:0}.prose img{max-width:100%;height:auto}.prose .footnotes{border-top:1px solid var(--border);color:var(--fg-muted);margin-top:2.5rem;padding-top:1.25rem;font-size:.95em}.prose .footnotes h2{margin-top:0;font-size:1em}.prose pre{max-width:100%;overflow-x:auto}.prose table{border-collapse:collapse;width:max-content;max-width:100%;display:block;overflow-x:auto}.prose td,.prose th{border:1px solid var(--border);padding:.4em .7em}*,:before,:after{box-sizing:border-box}html{--header-control-size:2.25rem;--header-pad-top:.75rem;--header-pad-bottom:.75rem;--header-height:calc(var(--header-pad-top) + var(--header-control-size) + var(--header-pad-bottom));-webkit-text-size-adjust:100%;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;scroll-behavior:smooth;scroll-padding-top:var(--header-height);scrollbar-gutter:stable;background-color:var(--bg);color:var(--fg)}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}body{background-color:var(--bg);min-height:100vh;color:var(--fg-body);font-family:var(--font-serif);font-size:var(--font-size-body);font-weight:400;line-height:var(--line-height-body);margin:0}html[data-lang=zh] body{font-family:var(--font-serif);font-synthesis:none;text-rendering:optimizelegibility;letter-spacing:var(--letter-spacing-zh-body);word-break:normal;overflow-wrap:break-word;line-break:strict;hanging-punctuation:allow-end;font-weight:400}[lang=zh-CN]{font-family:var(--font-serif-cjk), var(--font-serif-latin);font-synthesis:none;letter-spacing:var(--letter-spacing-zh-body);line-break:strict;overflow-wrap:break-word}html[data-lang=zh] .header-name{letter-spacing:var(--letter-spacing-zh-title);font-weight:600}html[data-lang=zh] .post-title{letter-spacing:var(--letter-spacing-zh-title);font-weight:700;line-height:1.3}html[data-lang=zh] .post-subtitle{letter-spacing:var(--letter-spacing-zh-body);font-weight:400;line-height:1.45}html[data-lang=zh] .h3{letter-spacing:var(--letter-spacing-zh-heading);font-weight:600;line-height:1.35}html[data-lang=zh] .toc-link,html[data-lang=zh] .bullet-list_link{font-weight:400}html[data-lang=zh] strong,[lang=zh-CN] strong{font-synthesis:none;color:var(--fg);letter-spacing:.03em;font-family:inherit;font-weight:700}html[data-lang=zh] em,[lang=zh-CN] em{color:var(--fg);font-style:normal;font-weight:400}html[data-lang=zh] .bullet-list_item{line-height:1.55}html[data-lang=zh] .toc-link{letter-spacing:var(--letter-spacing-zh-body);line-height:1.5}html[data-lang=zh] .bio-lead,html[data-lang=zh] .bio-para{letter-spacing:var(--letter-spacing-zh-body);font-weight:400}.page-wrapper{background-color:var(--bg);min-height:100vh;color:var(--fg-body);flex-direction:column;display:flex}.page-main{flex:1;padding-bottom:4rem}.container{width:100%;max-width:var(--narrow);padding-left:var(--page-pad-x);padding-right:var(--page-pad-x);margin-left:auto;margin-right:auto}.cc-narrow{max-width:var(--narrow)}a{color:var(--fg);text-underline-offset:.15em;transition:color var(--ease-color);text-decoration-thickness:1px}a:hover{color:var(--fg-muted)}:focus:not(input):not(textarea):not(select){outline:none!important}.h3{color:var(--fg);font-size:var(--font-size-h3);margin:0 0 .7em;font-weight:600;line-height:1.2}.u-mt-sm{margin-top:var(--section-gap)}.u-mb-lg{margin-bottom:4rem}.u-sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.header{z-index:20;padding:var(--header-pad-top) 0 var(--header-pad-bottom);background-color:var(--bg);flex-shrink:0;position:sticky;top:0}.header-inner{flex-wrap:nowrap;align-items:center;gap:.75rem;display:flex}@supports (backdrop-filter:blur(12px)) and (background:color-mix(in srgb, white 82%, transparent)){.header{background-color:color-mix(in srgb, var(--bg) 82%, transparent);backdrop-filter:blur(12px)}}.header-name-link{color:var(--fg);flex-shrink:1;justify-content:flex-start;align-items:flex-end;min-width:0;line-height:0;text-decoration:none;display:inline-flex}.header-name-link:hover{color:var(--fg-muted)}.header-name{font-size:var(--font-size-header-name);height:auto;color:inherit;transition:color var(--ease-color);margin:0;padding:0;font-weight:600;line-height:1;display:block}.header-controls{flex-shrink:0;align-items:flex-end;gap:.45rem;margin-left:auto;display:flex}.header-control-button{appearance:none;width:var(--header-control-size);height:var(--header-control-size);box-sizing:border-box;color:var(--fg-muted);cursor:pointer;transition:color var(--ease-color);background:0 0;border:0;border-radius:0;justify-content:center;align-items:center;margin:0;padding:0;text-decoration:none;display:inline-flex}.header-control-button:hover{color:var(--fg)}.theme-toggle_icon{flex-shrink:0;width:1.125rem;height:1.125rem;display:block}.theme-toggle_icon--moon,html.u-mode-invert .theme-toggle_icon--sun{display:none}html.u-mode-invert .theme-toggle_icon--moon{display:block}.bullet-list{gap:var(--list-gap);flex-direction:column;margin:0;padding:0;list-style:none;display:flex}.bullet-list_item{padding-left:1em;line-height:1.4;position:relative}.bullet-list_item:before{content:"•";color:var(--fg-muted);position:absolute;left:0}.bullet-list_link{color:var(--fg);border-bottom:1px solid #0000;margin-right:.25em;text-decoration:none}.bullet-list_link:hover{color:var(--fg-muted);border-bottom-color:var(--border)}.bullet-list_meta{color:var(--fg-muted);font-size:var(--font-size-meta);white-space:nowrap;display:inline}.post-header{margin-bottom:1.75rem}.post-title{color:var(--fg);margin:0 0 .35em;font-size:clamp(1.75rem,4vw,2.75rem);font-weight:700;line-height:1.15}.post-subtitle{color:var(--fg-body);margin:0 0 .75em;font-size:1.25em;font-weight:400;line-height:1.3}.post-date{color:var(--fg-muted);font-size:var(--font-size-meta);margin:0}.back-to-top{width:44px;height:44px;color:var(--fg-muted);justify-content:center;align-items:center;margin-top:2.5rem;text-decoration:none;display:inline-flex}.back-to-top:hover{color:var(--fg)}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}@media (width<=480px){:root{--font-size-body:1.125rem;--font-size-body-zh:1.0625rem;--page-pad-x:1rem}}@media (width<=600px){html{--header-control-size:2.75rem;--header-pad-top:.5rem;--header-pad-bottom:.5rem}}@media (width<=360px){html[data-lang=en]{--font-size-header-name:1em}.header-inner{gap:.5rem}.header-controls{gap:.125rem}}@media print{:root,:root.u-mode-invert{--bg:#fff;--bg-elevated:#fff;--bg-soft:#fff;--fg:#000;--fg-body:#000;--fg-muted:#333;--fg-faint:#555;--border:#999;--border-soft:#bbb}html,body{color:#000!important;background:#fff!important}.header{position:static}.header-controls,.back-to-top,.romantic-mode_toast,.romantic-portrait_secret{display:none!important}.container{max-width:none;padding:0}a{color:inherit}.post-header{break-after:avoid}pre{white-space:pre-wrap}}@font-face{font-family:Newsreader Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/_astro/newsreader-vietnamese-wght-normal.Czsa-EzN.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:Newsreader Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/_astro/newsreader-latin-ext-wght-normal.C-3rgBeH.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:Newsreader Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/_astro/newsreader-latin-wght-normal.CCVVNp6i.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}@font-face{font-family:Newsreader Variable;font-style:italic;font-display:swap;font-weight:200 800;src:url(/_astro/newsreader-vietnamese-wght-italic.xAqemagA.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:Newsreader Variable;font-style:italic;font-display:swap;font-weight:200 800;src:url(/_astro/newsreader-latin-ext-wght-italic.DFS986qL.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:Newsreader Variable;font-style:italic;font-display:swap;font-weight:200 800;src:url(/_astro/newsreader-latin-wght-italic.Bxi8ein9.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{--font-newsreader:"Newsreader Variable";--font-noto-serif-sc:"Noto Serif SC Variable"}