:root{--paper:#f7f4eb;--surface:#fdfbf5;--ink:#253244;--muted:#626a73;--gold:#a87839;--line:#d8cbb8;--wash:#ebe5d8;--link:#385c6b;--serif:"Iowan Old Style","Songti SC","Noto Serif CJK SC","Source Han Serif SC",STSong,Georgia,serif;--sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;--art:url(/art/observatory-day.webp);--pagefind-ui-primary:#385c6b;--pagefind-ui-background:#fdfbf5;--pagefind-ui-text:#253244;--pagefind-ui-border:#d8cbb8;--pagefind-ui-border-radius:4px;--pagefind-ui-font:var(--sans);color-scheme:light;scroll-behavior:smooth;scroll-padding-top:30px}:root[data-theme=dark]{--paper:#10202c;--surface:#172a36;--ink:#ebe6dc;--muted:#b7bdc0;--gold:#dab77c;--line:#40515a;--wash:#223642;--link:#a8c8ce;--art:url(/art/observatory-night.webp);--pagefind-ui-primary:#a8c8ce;--pagefind-ui-background:#172a36;--pagefind-ui-text:#ebe6dc;--pagefind-ui-border:#40515a;color-scheme:dark}*{box-sizing:border-box}body{background:var(--paper);color:var(--ink);font-family:var(--sans);margin:0;font-size:16px;line-height:1.8}a{color:var(--link);text-underline-offset:5px;text-decoration:none}a:hover{text-decoration:underline}button,input{font:inherit}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid var(--gold);outline-offset:5px}.wrap{width:min(1180px,100% - 80px);margin-inline:auto}svg{flex:none;width:24px;height:24px;display:block}.skip{z-index:10;background:var(--ink);color:var(--paper);padding:10px 18px;position:fixed;top:-80px;left:16px}.skip:focus{top:12px}.site-header{z-index:5;border-bottom:1px solid var(--line);position:relative}.navbar{align-items:center;gap:35px;height:96px;display:flex}.brand{font-family:var(--serif);color:var(--ink);white-space:nowrap;align-items:center;gap:15px;font-size:29px;font-weight:600;display:flex}.brand svg{width:66px;height:44px}.brand:hover{text-decoration:none}.navbar nav{align-items:center;gap:35px;margin-left:auto;font-size:15px;display:flex}.navbar nav>a{color:var(--ink);padding:8px 0;position:relative}.navbar nav>a[aria-current=page]:after{content:"";background:var(--gold);height:1.5px;position:absolute;bottom:1px;left:2px;right:2px;transform:rotate(-2deg)}.icon-button{color:var(--ink);background:0 0;border:0;border-radius:50%;place-items:center;width:42px;height:42px;padding:8px;display:grid}.icon-button:hover{background:var(--wash)}.theme-toggle{border-left:1px solid var(--line);border-radius:0;width:58px;padding-left:25px}.theme-toggle .moon-icon{display:none}:root[data-theme=dark] .theme-toggle .moon-icon{display:block}:root[data-theme=dark] .theme-toggle .sun-icon,#menu-toggle{display:none}.banner{isolation:isolate;position:relative;overflow:hidden}.banner-art{z-index:-1;background-image:var(--art);background-position:50%;background-repeat:no-repeat;background-size:1440px;position:absolute;inset:0;mask-image:linear-gradient(#000 80%,#0000 100%)}.banner-inner{padding-block:65px 48px;position:relative}.banner:not(.home) .banner-art{opacity:.78;background-position:100%;background-size:700px;left:52%;mask-image:linear-gradient(90deg,#0000,#000 38%)}.banner h1{font-family:var(--serif);letter-spacing:.01em;overflow-wrap:anywhere;max-width:820px;margin:0;font-size:54px;font-weight:600;line-height:1.5}.banner.home .banner-inner{min-height:480px;padding-block:78px 74px}.banner.home h1{font-size:76px;line-height:1.25}.hero-subtitle{font-family:var(--serif);margin:8px 0 12px;font-size:36px;font-weight:600;line-height:1.5}.hero-description{font-family:var(--serif);margin:0 0 30px;font-size:21px}.button{border:1px solid var(--gold);background:var(--paper);min-height:46px;font-family:var(--serif);color:var(--ink);border-radius:3px;justify-content:center;align-items:center;gap:25px;padding:10px 25px;font-size:16px;transition:background .18s,transform .18s;display:inline-flex}.button:hover{background:var(--wash);text-decoration:none;transform:translateY(-2px)}.button svg{width:23px}.article-banner .banner-inner{padding-block:40px 46px}.article-banner h1{max-width:800px;font-size:46px;line-height:1.5}.breadcrumb{color:var(--muted);align-items:center;gap:10px;margin-bottom:22px;font-size:14px;display:inline-flex}.breadcrumb svg{width:20px;transform:rotate(180deg)}.banner-meta{color:var(--muted);flex-wrap:wrap;align-items:center;gap:10px 15px;margin-top:20px;font-size:14px;display:flex}.banner-meta i{color:var(--gold);font-style:normal}.board{border-top:1px solid var(--line);min-height:280px;padding-block:44px 30px;scroll-margin-top:28px;position:relative}.board:before{content:"";background:var(--gold);width:5px;height:5px;position:absolute;top:-3px;left:52%;transform:rotate(45deg)}.home-board{grid-template-columns:minmax(0,1fr) 240px;gap:45px;display:grid}.section-heading{justify-content:space-between;align-items:center;gap:20px;margin-bottom:15px;display:flex}.section-heading h2,.author-rail h2{font-family:var(--serif);margin:0;font-size:29px;font-weight:600}.section-heading>a{color:var(--ink);align-items:center;gap:8px;font-size:14px;display:inline-flex}.section-heading>a svg{width:21px}.author-rail{border-left:1px solid var(--line);padding-left:35px}.author-rail h2{font-size:25px}.author-rail h2:after{content:"";background:var(--gold);width:30px;height:2px;margin-top:15px;display:block;transform:rotate(-2deg)}.author-rail h3{font-family:var(--serif);margin:28px 0 8px;font-size:27px}.author-rail p{color:var(--muted);margin:0 0 20px;font-size:15px;line-height:1.9}.author-rail>a{align-items:center;gap:12px;margin:12px 0;font-size:14px;display:flex}.author-rail>a svg{width:20px}.rail-ornament{color:var(--gold);margin-top:60px}.rail-ornament svg{opacity:.55;width:100px;height:90px}.post-list article{border-bottom:1px solid var(--line);grid-template-columns:105px minmax(0,1fr) 25px;align-items:start;gap:22px;padding:30px 0;display:grid}.post-list time{font-family:var(--serif);color:var(--muted);white-space:nowrap;margin-top:25px;font-size:15px}.list-category{letter-spacing:.05em;color:var(--gold);margin-bottom:5px;font-size:12px}.post-list h2{font-family:var(--serif);margin:0 0 10px;font-size:25px;font-weight:600;line-height:1.5}.post-list h2 a{color:var(--ink)}.post-list p{color:var(--muted);-webkit-line-clamp:3;-webkit-box-orient:vertical;margin:0;font-size:15px;line-height:1.9;display:-webkit-box;overflow:hidden}.post-arrow{color:var(--ink);margin-top:35px}.post-arrow svg{width:24px}.compact article{grid-template-columns:120px minmax(0,1fr) 25px;align-items:center;gap:30px;padding:24px 0}.compact time{margin:0}.compact h2{margin:0;font-size:23px}.compact .post-arrow{margin:0}.pagination{flex-wrap:wrap;justify-content:center;gap:10px;margin:38px 0 5px;display:flex}.pagination a{width:38px;height:38px;color:var(--ink);font-family:var(--serif);border:1px solid #0000;border-radius:45% 52% 48% 50%;place-items:center;display:grid}.pagination [aria-current=page]{border-color:var(--gold);color:var(--gold)}.pagination a:hover{background:var(--wash);text-decoration:none}.article-board{grid-template-columns:minmax(0,780px) 220px;align-items:start;gap:80px;padding-top:44px;display:grid}.prose{overflow-wrap:anywhere;min-width:0;max-width:780px;font-size:17px;line-height:1.95}.board:not(.article-board)>.prose{margin-inline:auto}.prose>:first-child{margin-top:0}.prose h1,.prose h2,.prose h3,.prose h4{font-family:var(--serif);color:var(--ink);scroll-margin-top:30px;font-weight:600;line-height:1.6}.prose h2{margin:43px 0 22px;font-size:29px}.prose h2:after{content:"";background:var(--gold);width:35px;height:2px;margin-top:9px;display:block;transform:rotate(-2deg)}.prose h3{margin:32px 0 15px;font-size:23px}.prose p{margin:22px 0}.prose a{text-decoration:underline;text-decoration-color:var(--line)}.prose a:hover{text-decoration-color:var(--gold)}.prose img{border-radius:3px;max-width:100%;height:auto}.prose pre{border:1px solid var(--line);border-radius:5px;max-width:100%;padding:22px 24px;font-size:14px;line-height:1.8;overflow-x:auto}.prose code{font-family:ui-monospace,SFMono-Regular,Consolas,Liberation Mono,monospace}.prose :not(pre)>code{background:var(--wash);border-radius:3px;padding:3px 5px;font-size:.86em}.prose table{border-collapse:collapse;max-width:100%;font-size:15px;display:block;overflow-x:auto}.prose th,.prose td{border:1px solid var(--line);padding:11px 15px}.prose th{background:var(--wash);font-weight:600}.prose blockquote{border-left:2px solid var(--gold);background:var(--wash);color:var(--muted);margin:28px 0;padding:2px 22px}.prose hr{border:0;border-top:1px solid var(--line);margin:35px 0}.prose strong{font-weight:600}.post-taxonomy{border-top:1px solid var(--line);flex-wrap:wrap;gap:10px 17px;margin-top:45px;padding-top:24px;font-size:13px;display:flex}.post-taxonomy a{color:var(--muted)}.back-link{margin-top:30px;font-size:14px;display:block}.toc{border-left:1px solid var(--line);min-width:0;max-height:calc(100vh - 80px);padding-left:26px;position:sticky;top:35px;overflow:auto}.toc>strong{font-family:var(--serif);margin-bottom:20px;font-size:24px;display:block}.toc>strong:after{content:"";background:var(--gold);width:25px;height:1px;margin-top:12px;display:block}.toc ul{margin:0;padding:0;list-style:none}.toc li{margin:14px 0;font-size:14px;line-height:1.7}.toc .indent{padding-left:12px;font-size:13px}.toc a{color:var(--muted)}.toc a:hover{color:var(--gold)}.term-list{grid-template-columns:repeat(3,minmax(0,1fr));gap:0 40px;display:grid}.term-list>a{border-bottom:1px solid var(--line);font-family:var(--serif);color:var(--ink);justify-content:space-between;align-items:center;gap:15px;padding:22px 4px;font-size:21px;display:flex}.term-list>a:hover{color:var(--gold);text-decoration:none}.term-list span{color:var(--muted);font-size:14px;font-family:var(--sans)}.profile{text-align:center;margin-bottom:35px}.profile img{object-fit:cover;border:1px solid var(--gold);border-radius:47% 52% 48% 50%;width:100px;height:100px;padding:4px}.profile p{color:var(--muted);font-size:15px}.site-footer{border-top:1px solid var(--line);color:var(--muted);justify-content:space-between;align-items:center;gap:25px;margin-top:55px;padding-block:28px 35px;font-size:13px;display:flex}.footer-brand{font-family:var(--serif);color:var(--ink);font-size:20px}.footer-brand>span{color:var(--muted);margin-left:20px;font-size:13px}.site-footer p{margin:0}.site-footer>div{gap:24px;display:flex}.site-footer a{color:inherit}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;width:1px;height:1px;padding:0;position:absolute;overflow:hidden}:root[data-theme=dark] .astro-code,:root[data-theme=dark] .astro-code span{color:var(--shiki-dark)!important;background-color:var(--shiki-dark-bg)!important}#search{min-height:110px;margin:28px 0}#search .pagefind-ui__search-input{border-width:1px;font-size:17px;font-weight:400}#search .pagefind-ui__result-title{font-family:var(--serif);font-size:22px}#search .pagefind-ui__result-link{color:var(--ink)}#search .pagefind-ui__result-excerpt{font-size:15px;line-height:1.9}#search .pagefind-ui__result{border-color:var(--line)}#search .pagefind-ui__result mark{color:#253244;background:#e9d7ad}@media (width>=1600px){.banner-art{background-size:1600px}}@media (width<=1100px){.navbar{gap:20px}.navbar nav{gap:22px}.home-board{grid-template-columns:minmax(0,1fr) 190px;gap:30px}.author-rail{padding-left:25px}.article-board{grid-template-columns:minmax(0,1fr) 190px;gap:40px}.banner.home h1{font-size:66px}.hero-subtitle{font-size:31px}.banner.home .banner-art{background-position:45%}.article-banner h1{max-width:70%;font-size:40px}.term-list{column-gap:28px}.post-list article{grid-template-columns:90px minmax(0,1fr) 22px;gap:16px}.post-list h2{font-size:23px}.brand svg{width:48px}.navbar nav{font-size:14px}}@media (width<=760px){.wrap{width:calc(100% - 40px)}.navbar{gap:12px;height:80px}.brand{gap:7px;font-size:25px}.brand svg{width:43px;height:35px}#menu-toggle{order:3;margin-left:0;display:grid}.theme-toggle{border:0;border-radius:50%;width:38px;height:38px;margin-left:auto;padding:8px}.navbar nav{background:var(--paper);border-bottom:1px solid var(--line);text-align:center;grid-template-columns:repeat(3,1fr);gap:12px;margin:0;padding:20px;font-size:15px;display:none;position:absolute;top:80px;left:0;right:0;box-shadow:0 15px 25px #0001}.navbar nav.open{display:grid}.navbar nav>a[aria-current=page]:after{left:30%;right:30%}.banner.home .banner-inner{flex-direction:column;align-items:flex-start;min-height:550px;padding:34px 0 0;display:flex}.banner.home h1{font-size:49px;line-height:1.4}.hero-subtitle{margin:0 0 9px;font-size:25px}.hero-description{margin-bottom:22px;font-size:16px}.banner.home .banner-art{background-position:63% bottom;background-size:1050px;mask-image:linear-gradient(#0000 26%,#000 56% 93%,#0000 100%)}.button{gap:18px;min-height:43px;padding:8px 18px;font-size:14px}.banner:not(.home) .banner-art{opacity:.23;background-size:700px;left:25%;mask-image:linear-gradient(90deg,#0000,#000)}.banner-inner{padding-block:38px 32px}.banner h1{font-size:41px}.article-banner .banner-inner{padding-block:25px 32px}.article-banner h1{max-width:100%;font-size:32px;line-height:1.55}.breadcrumb{margin-bottom:17px;font-size:13px}.banner-meta{gap:6px 10px;margin-top:17px;font-size:12px}.home-board{display:block}.board{padding-top:28px}.section-heading h2{font-size:26px}.section-heading>a{font-size:12px}.author-rail{border-left:0;border-top:1px solid var(--line);margin-top:40px;padding:28px 0 0}.author-rail h2{font-size:23px}.author-rail h3{margin-top:20px;font-size:25px}.author-rail>a{margin-right:24px;display:inline-flex}.rail-ornament{display:none}.post-list article{grid-template-columns:minmax(0,1fr) 23px;gap:10px 16px;padding:23px 0}.post-list time{grid-column:1;margin:0;font-size:13px}.post-summary{grid-area:2/1}.post-arrow{grid-area:2/2;margin-top:25px}.list-category{margin-bottom:7px;font-size:11px}.post-list h2{margin-bottom:10px;font-size:23px;line-height:1.6}.post-list p{-webkit-line-clamp:3;font-size:14px;line-height:1.9}.compact .post-summary{grid-row:2}.compact h2{font-size:21px}.compact .post-arrow{grid-row:2;margin-top:3px}.article-board{display:block}.toc{display:none}.prose{font-size:16px;line-height:1.95}.prose h2{margin-top:36px;font-size:25px}.prose h3{font-size:21px}.prose pre{padding:17px 15px;font-size:13px}.prose table{font-size:13px}.prose td,.prose th{padding:8px 11px}.term-list{grid-template-columns:repeat(2,minmax(0,1fr));column-gap:20px}.term-list>a{padding-block:18px;font-size:18px}.site-footer{flex-direction:column;align-items:flex-start;gap:15px;margin-top:30px;font-size:12px}.site-footer>div{gap:22px}.footer-brand{font-size:20px}#search .pagefind-ui__search-input{font-size:16px}#search .pagefind-ui__result-title{font-size:20px}}@media (width<=360px){.wrap{width:calc(100% - 32px)}.banner.home h1{font-size:43px}.hero-subtitle,.brand{font-size:23px}.navbar{gap:7px}.article-banner h1{font-size:29px}.term-list{grid-template-columns:1fr}.theme-toggle{margin-left:auto}}@media (prefers-reduced-motion:reduce){:root{scroll-behavior:auto}*,:before,:after{transition:none!important;animation:none!important}}.author-rail .author-avatar{object-fit:cover;border:1px solid var(--gold);border-radius:47% 52% 48% 50%;width:100px;height:100px;margin-top:26px;padding:4px;display:block}