:root{color-scheme:dark;--bg:#10161d;--panel:#1a232c;--panel-2:#212c36;--grid-line:#233039;--brass:#c08552;--brass-dim:#8a6540;--brass-hover:#ce9764;--on-brass:#241708;--teal:#3f7d6b;--coral:#b5623f;--paper:#e8e4d9;--paper-dim:#9ca6ac;--line:#2e3b45;--mono:"IBM Plex Mono", monospace;--display:"Kanit", sans-serif}:root[data-theme=light]{color-scheme:light;--bg:#f3efe6;--panel:#fbf9f4;--panel-2:#ece6da;--grid-line:#e4ddcf;--brass:#94592a;--brass-dim:#c49a70;--brass-hover:#7d4a21;--on-brass:#fffaf2;--teal:#2f6b5a;--coral:#a24e2c;--paper:#1f2a33;--paper-dim:#56626b;--line:#d5cdbd}@media (prefers-color-scheme:light){:root:not([data-theme]){color-scheme:light;--bg:#f3efe6;--panel:#fbf9f4;--panel-2:#ece6da;--grid-line:#e4ddcf;--brass:#94592a;--brass-dim:#c49a70;--brass-hover:#7d4a21;--on-brass:#fffaf2;--teal:#2f6b5a;--coral:#a24e2c;--paper:#1f2a33;--paper-dim:#56626b;--line:#d5cdbd}}*{box-sizing:border-box}body{background:linear-gradient(var(--grid-line) 1px, transparent 1px) 0 0 / 40px 40px, linear-gradient(90deg, var(--grid-line) 1px, transparent 1px) 0 0 / 40px 40px, var(--bg);color:var(--paper);font-variant-numeric:slashed-zero;margin:0;padding:0 0 4rem;font-family:Sarabun,sans-serif}.wrap{max-width:1040px;margin:0 auto;padding:0 24px}.site-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:32px 0 0;display:flex}.brand{font-family:var(--display);letter-spacing:.5px;color:var(--paper);font-size:22px;font-weight:600;text-decoration:none}.brand span{color:var(--brass)}.site-nav{flex-wrap:wrap;gap:24px;display:flex}.site-nav a{color:var(--paper-dim);border-bottom:1px solid #0000;padding-bottom:2px;font-size:14px;text-decoration:none}.site-nav a:hover,.site-nav a[aria-current=page]{color:var(--brass);border-color:var(--brass-dim)}.search{background:var(--panel-2);border:1px solid var(--line);font-family:var(--mono);color:var(--paper-dim);align-items:center;gap:8px;margin:0;padding:0 10px 0 12px;font-size:13px;display:flex}.search:focus-within{border-color:var(--brass-dim)}.search-icon{flex:none;width:15px;height:15px}.search input{width:200px;min-width:0;color:var(--paper);font:inherit;background:0 0;border:none;outline:none;padding:8px 0}.search input::placeholder{color:var(--paper-dim)}.search input::-webkit-search-cancel-button{display:none}.search-key{font-family:var(--mono);border:1px solid var(--line);color:var(--paper-dim);padding:3px 6px;font-size:11px;line-height:1}.search:focus-within .search-key{visibility:hidden}.search-panel{z-index:20;background:var(--panel);border:1px solid var(--line);width:min(460px,100vw - 32px);max-height:min(70vh,560px);font-family:Sarabun,sans-serif;position:absolute;top:calc(100% + 6px);right:0;overflow-y:auto;box-shadow:0 12px 32px #00000040}.search-status{color:var(--paper-dim);margin:0;padding:14px 16px;font-size:13px}.sr-group+.sr-group{border-top:1px solid var(--line)}.sr-group-label{font-family:var(--mono);color:var(--brass);margin:0;padding:10px 16px 4px;font-size:11px}.search-panel a{color:var(--paper);border-left:2px solid #0000;padding:8px 16px;text-decoration:none;display:block}.search-panel a:hover,.search-panel a[aria-selected=true]{background:var(--panel-2);border-left-color:var(--brass)}.sr-title{font-size:14px;line-height:1.5;display:block}.sr-excerpt,.sp-excerpt{color:var(--paper-dim);font-size:12px;line-height:1.6;display:block}.search-panel mark,.sp-excerpt mark{color:var(--brass);background:0 0;font-weight:500}.search-panel a.sr-sub{padding:4px 16px 4px 32px}.sr-sub .sr-title{color:var(--paper-dim);font-size:13px}.sr-sub .sr-title:before{content:"↳ ";color:var(--brass-dim)}.search-panel a.sr-all{border-top:1px solid var(--line);font-family:var(--mono);color:var(--brass);padding:10px 16px;font-size:12px}.search-page-form{grid-template-columns:1fr}.calc-chips button[aria-pressed=true]{color:var(--brass);border-color:var(--brass)}#sp-results{margin:0 auto}.sp-item{border-top:1px solid var(--line);color:var(--paper);padding:16px 0 6px;text-decoration:none;display:block}.sp-item:hover .sp-title{color:var(--brass)}.sp-section{font-family:var(--mono);color:var(--brass);font-size:11px;display:block}.sp-title{font-family:var(--display);margin:2px 0 4px;font-size:17px;display:block}.sp-subs{padding:0 0 12px 16px}.sp-subs a{border-left:2px solid var(--line);color:var(--paper);padding:6px 0 6px 12px;text-decoration:none;display:block}.sp-subs a:hover{border-left-color:var(--brass)}.sp-sub-title{font-size:14px;display:block}.hero{border:1px solid var(--line);background:var(--panel);margin-top:28px}.hero-main{padding:44px 40px 32px}.eyebrow{font-family:var(--display);color:var(--brass);margin:0 0 14px;font-size:15px;font-weight:500}h1 .col-tag{vertical-align:middle;margin-left:8px}h1{font-family:var(--display);max-width:680px;margin:0 0 16px;font-size:38px;font-weight:500;line-height:1.35}.hero-sub{color:var(--paper-dim);max-width:560px;margin:0 0 28px;font-size:16px;line-height:1.8}.hero-cta{flex-wrap:wrap;gap:14px;display:flex}.btn{border:1px solid var(--line);color:var(--paper);padding:12px 22px;font-family:Sarabun,sans-serif;font-size:14px;font-weight:500;text-decoration:none}.btn.primary{background:var(--brass);color:var(--on-brass);border-color:var(--brass)}.btn.primary:hover{background:var(--brass-hover);border-color:var(--brass-hover)}.btn.ghost:hover{border-color:var(--brass-dim);color:var(--brass)}.hero-strip{background:var(--panel);border-top:1px solid var(--line);font-family:var(--mono);grid-template-columns:repeat(4,1fr);font-size:11px;display:grid}.tb-head{border-bottom:1px solid var(--line);color:var(--brass);letter-spacing:1px;grid-column:1/-1;padding:7px 14px}.tb-cell{border-right:1px solid var(--line);padding:8px 14px 10px}.tb-cell:last-child{border-right:none}.tb-label{color:var(--paper-dim);margin-bottom:2px;display:block}.tb-value{color:var(--paper);font-size:17px}.tb-unit{color:var(--paper-dim);margin-left:6px}@media (width>=1000px){.hero{display:grid}.hero>*{grid-area:1/1}.hero-strip{border-left:1px solid var(--line);place-self:end;width:340px}}@media (width>=1000px),(width<=760px){.hero-strip{grid-template-columns:1fr 1fr}.tb-cell:nth-child(3){border-right:none}.tb-cell:nth-child(-n+3){border-bottom:1px solid var(--line)}}.section{margin-top:24px}.section h2{font-family:var(--display);margin:0 0 4px;font-size:19px;font-weight:500}.section .desc{color:var(--paper-dim);margin:0 0 16px;font-size:13px}.calc-row{background:var(--line);border:1px solid var(--line);grid-template-columns:repeat(4,1fr);gap:1px;display:grid}.calc-card{background:var(--panel);padding:18px}.calc-icon{font-family:var(--mono);color:var(--brass-dim);margin:0 0 10px;font-size:11px}.calc-name{font-family:var(--display);margin:0 0 6px;font-size:15px}.calc-desc{color:var(--paper-dim);margin:0;font-size:12px;line-height:1.6}a.calc-card{color:inherit;text-decoration:none;display:block}a.calc-card:hover .calc-name{color:var(--brass)}.calc-form{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));align-items:end;gap:16px;margin:8px auto 20px;display:grid}.field label,.field .field-label{font-family:var(--mono);color:var(--paper-dim);margin-bottom:6px;font-size:12px;display:block}.field input,.field select{box-sizing:border-box;background:var(--bg);width:100%;color:var(--paper);border:1px solid var(--line);font-family:var(--mono);font-variant-numeric:slashed-zero;border-radius:0;padding:10px 12px;font-size:15px}.field input:focus,.field select:focus{border-color:var(--brass);outline:none}.field-pair{gap:8px;display:flex}.calc-result{background:var(--line);border:1px solid var(--line);grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:1px;margin:0 auto 12px;display:grid}.result-cell{background:var(--panel-2);padding:14px 16px}.result-label{font-family:var(--mono);color:var(--paper-dim);margin-bottom:4px;font-size:12px;display:block}.result-value{font-family:var(--mono);color:var(--brass);font-variant-numeric:tabular-nums slashed-zero;font-size:22px}.result-sub{font-family:var(--mono);color:var(--paper-dim);margin-top:4px;font-size:12px;display:block}.calc-note{color:var(--paper-dim);margin:0 auto 8px;font-size:13px;line-height:1.7}.calc-note.warn{color:var(--coral)}.calc-chips{flex-wrap:wrap;gap:8px;margin:0 auto 16px;display:flex}.calc-chips button{font-family:var(--mono);color:var(--paper-dim);border:1px solid var(--line);cursor:pointer;background:0 0;padding:6px 10px;font-size:12px}.calc-chips button:hover{color:var(--brass);border-color:var(--brass-dim)}.calc-method{border-top:1px solid var(--line);margin-top:32px;padding-top:8px}[hidden]{display:none!important}.catcols{background:var(--line);border:1px solid var(--line);grid-template-columns:repeat(3,1fr);gap:1px;display:grid}.col{background:var(--panel);padding:26px}.col-head{justify-content:space-between;align-items:baseline;margin-bottom:16px;display:flex}.col-title{font-family:var(--display);color:var(--paper);margin:0;font-size:17px;text-decoration:none}a.col-title:hover{color:var(--brass)}.col-tag{font-family:var(--mono);text-transform:uppercase;padding:3px 9px;font-size:11px}.tag-ref{color:var(--teal);border:1px solid var(--teal)}.tag-lib{color:var(--coral);border:1px solid var(--coral)}.tag-art{color:var(--brass);border:1px solid var(--brass)}.list-item{border-top:1px solid var(--line);color:var(--paper);justify-content:space-between;align-items:center;gap:12px;padding:12px 0;font-size:14px;text-decoration:none;display:flex}.list-item:last-child{padding-bottom:0}a.list-item:hover>:first-child{color:var(--brass)}.list-item>:last-child{font-family:var(--mono);color:var(--paper-dim);white-space:nowrap;font-size:11px}.chapter-no{font-family:var(--mono);color:var(--brass);margin-right:10px;font-size:12px}.col.boxed{border:1px solid var(--line)}.empty{color:var(--paper-dim);border-top:1px solid var(--line);margin:0;padding:12px 0;font-size:13px}.feature{border:1px solid var(--line);background:var(--panel);grid-template-columns:120px 1fr;gap:24px;margin-top:24px;padding:32px;display:grid}.feature-num{font-family:var(--mono);color:var(--brass-dim);font-size:13px}.feature-num .big{color:var(--brass);margin-top:4px;font-size:40px;line-height:1;display:block}.feature-title{font-family:var(--display);margin:0 0 10px;font-size:20px}.feature-desc{color:var(--paper-dim);max-width:540px;margin:0 0 14px;font-size:14px;line-height:1.8}.feature-link{font-family:var(--mono);color:var(--brass);font-size:12px;text-decoration:none}.crumbs{font-family:var(--mono);color:var(--paper-dim);margin-top:28px;font-size:12px}.crumbs a{color:var(--brass);text-decoration:none}.article{border:1px solid var(--line);background:var(--panel);margin-top:12px;padding:40px}.article>*{max-width:720px;margin-inline:auto}.article-meta{font-family:var(--mono);color:var(--paper-dim);margin:0 auto 24px;font-size:12px}.prose{max-width:720px;line-height:1.8}.prose h2,.prose h3,.prose h4{font-family:var(--display);margin:1.8em 0 .6em;font-weight:500}.prose h2{font-size:24px;line-height:1.4}.prose h3{font-size:21px;line-height:1.45}.prose h4{margin-top:1.6em;font-size:18px;line-height:1.5}.heading-number{color:var(--brass);font-variant-numeric:tabular-nums;margin-right:.35em}.prose a{color:var(--brass)}.prose code{font-family:var(--mono);font-size:.9em}.prose .katex-display{padding:4px 0;overflow:auto hidden}.prose td .katex{white-space:nowrap}.gdt-mod{box-sizing:border-box;vertical-align:.1em;border:1.5px solid;border-radius:50%;justify-content:center;align-items:center;width:1.35em;height:1.35em;font-size:.75em;font-weight:600;line-height:1;display:inline-flex}.prose pre{background:var(--bg);border:1px solid var(--line);padding:16px;overflow-x:auto}.prose pre code{background:0 0;padding:0}.prose table{border-collapse:collapse;width:100%;margin:1.5em 0;font-size:14px;display:block;overflow-x:auto}.prose th,.prose td{border:1px solid var(--line);text-align:left;text-wrap:pretty;padding:8px 12px}.prose th{background:var(--panel-2);font-family:var(--display);color:var(--brass);font-size:14px;font-weight:500}.prose td{font-variant-numeric:tabular-nums slashed-zero}.prose :is(th,td).nowrap{white-space:nowrap}.prose .fig{margin:1.5em 0}.prose .fig>img,.prose .fig>.svg-figure{margin:0}.prose .fig figcaption{color:var(--paper-dim);margin-top:8px;font-size:14px;line-height:1.6}.prose .fig>table{margin:0}.prose .tbl figcaption{margin:0 0 8px}.prose .fig .fig-number{color:var(--brass);margin-right:.35em;font-weight:600}.prose .svg-figure{border:1px solid var(--line);margin:1.5em 0 .5em;line-height:0}.prose .svg-figure svg{width:100%;height:auto;display:block}.prose img{border:1px solid var(--line);max-width:100%;height:auto;margin:1.5em 0 .5em;display:block}.prose blockquote{border-left:3px solid var(--coral);background:var(--panel-2);margin:1.5em 0;padding:14px 20px}.prose blockquote p{margin:0}.prose .contains-task-list{padding-left:0;list-style:none}.prose .task-list-item input{accent-color:var(--brass);margin-right:8px}.site-footer{border-top:1px solid var(--line);flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:12px 24px;margin-top:40px;padding-top:24px;display:flex}.site-footer .footer-license{text-align:center;flex-basis:100%;margin-top:20px}.site-footer p{color:var(--paper-dim);margin:0;font-size:13px}.site-footer .footer-brand{font-family:var(--mono);font-size:12px}.footer-links{flex-wrap:wrap;gap:16px;font-size:13px;display:flex}.site-footer a{color:var(--paper-dim)}.footer-links a{text-decoration:none}.site-footer a:hover{color:var(--brass)}.contact-email{font-family:var(--mono);font-size:18px}@media (width<=760px){.wrap{padding:0 16px}.hero-main,.article{padding:28px 20px}.calc-row{grid-template-columns:1fr 1fr}.catcols,.feature{grid-template-columns:1fr}h1{font-size:28px}.header-tools{flex:100%}.search{flex:1}.search input{width:100%}.search-key{display:none}}.header-tools{align-items:center;gap:10px;display:flex;position:relative}.theme-toggle{cursor:pointer;background:var(--panel-2);border:1px solid var(--line);width:36px;height:36px;color:var(--paper-dim);justify-content:center;align-items:center;padding:0;display:inline-flex}.theme-toggle:hover{color:var(--brass);border-color:var(--brass-dim)}.theme-toggle:focus-visible{outline:2px solid var(--brass);outline-offset:2px}.theme-toggle svg{width:18px;height:18px}.theme-toggle .icon-sun{display:none}:root[data-theme=light] .theme-toggle .icon-sun{display:block}:root[data-theme=light] .theme-toggle .icon-moon{display:none}.astro-code,.astro-code span{color:var(--shiki-dark)}:root[data-theme=light] .astro-code,:root[data-theme=light] .astro-code span{color:var(--shiki-light)}@media (prefers-color-scheme:light){:root:not([data-theme]) .astro-code,:root:not([data-theme]) .astro-code span{color:var(--shiki-light)}}