@charset "UTF-8";

:root{--paper:#f8f8f3;--white:#fff;--ink:#213d34;--green:#245445;--muted:#717c74;--line:#dde1d7;--orange:#cf5c3d;--light:#edf1e8;--serif:"Yu Mincho","Hiragino Mincho ProN",serif;--sans:"Yu Gothic","Hiragino Kaku Gothic ProN",Meiryo,sans-serif;--mono:"Bahnschrift","Consolas",monospace}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:22px}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button,summary{cursor:pointer}button{color:inherit}a:hover{color:var(--orange)}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #ce6e42;outline-offset:5px}::selection{background:#dce8cd}h1,h2,h3,p{margin:0}svg{display:block}button{background:none}button,select{border:0}button{line-height:1.4}[hidden]{display:none!important}.shell{max-width:1224px;width:calc(100% - 96px);margin:0 auto}.eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.16em;font-weight:500;line-height:1.5}.skip-link{position:absolute;left:20px;top:-70px;padding:10px 20px;background:var(--ink);color:#fff;z-index:100}.skip-link:focus{top:10px}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.preview-bar{background:#e9ede4;border-bottom:1px solid #dce1d5;color:#607060;font-size:10px;letter-spacing:.07em}.preview-bar .shell{display:flex;justify-content:space-between;align-items:center;min-height:28px}.preview-divider{margin:0 9px;opacity:.45}.site-header{border-bottom:1px solid var(--line)}.masthead{height:108px;display:flex;align-items:center;gap:28px}.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}.brand-symbol{width:38px;color:var(--green)}.brand b{font-family:var(--mono);font-size:29px;font-weight:600;letter-spacing:.02em;line-height:1.2;display:block;white-space:nowrap}.brand b em{font-style:normal;color:var(--orange);font-weight:300;padding:0 2px}.brand small{display:block;font-family:var(--mono);font-size:10px;letter-spacing:.38em;line-height:1.5}.brand-description{font-size:11px;line-height:1.75;letter-spacing:.08em;border-left:1px solid var(--line);padding-left:25px;color:#536057}.masthead nav{display:flex;align-items:center;gap:32px;margin-left:auto;font-size:13px;font-weight:600;height:100%}.masthead nav>a{height:100%;display:flex;align-items:center;position:relative;white-space:nowrap}.masthead nav>a[aria-current]::after{content:"";position:absolute;bottom:-1px;left:0;right:0;height:3px;background:var(--green)}.search-nav{margin-left:8px}.search-nav svg,.search-box svg{height:20px;width:20px;fill:none;stroke:currentColor;stroke-width:1.5}
.home-hero{display:grid;grid-template-columns:1.12fr 1fr;gap:64px;padding-top:55px;padding-bottom:55px;align-items:center}.hero-copy>.eyebrow{display:flex;align-items:center;gap:9px;color:var(--green)}.status-dot{height:6px;width:6px;background:var(--orange);border-radius:50%;display:inline-block}.hero-copy h1{font-size:44px;font-weight:600;line-height:1.65;letter-spacing:.06em;margin-top:20px}.underlined{position:relative;z-index:0}.underlined::after{content:"";position:absolute;height:9px;background:#dde5ca;left:-3px;right:1px;bottom:5px;z-index:-1}.hero-description{font-size:13px;line-height:2.1;margin-top:20px;color:#58675b;letter-spacing:.025em}.hero-bottom{display:flex;align-items:center;gap:15px;font-size:10px;font-weight:600;letter-spacing:.08em;margin-top:30px}.hero-bottom i{width:2px;height:2px;background:var(--muted);border-radius:50%}.latest-panel{position:relative;background:var(--green);color:#fff;min-height:328px;overflow:hidden;padding:24px 28px 0;transition:background .18s}.latest-panel:hover{color:#fff;background:#1b4437}.panel-top{display:flex;justify-content:space-between;align-items:center;font-size:10px;letter-spacing:.09em;position:relative;z-index:1}.panel-top>span:first-child{font-family:var(--mono);display:flex;align-items:center;gap:8px}.panel-top i{height:5px;width:5px;display:inline-block;background:#d5da9b;border-radius:50%}.panel-top>span:last-child{display:flex;align-items:center;gap:10px}.panel-date{padding-top:25px;position:relative;z-index:1}.panel-date>span{font-family:var(--mono);letter-spacing:.12em;font-size:14px}.panel-date strong{display:block;font-family:var(--mono);font-size:76px;line-height:1.1;font-weight:400;letter-spacing:-.05em}.panel-date em{font-style:normal;font-weight:200;color:#a4b6a6;padding:0 5px}.panel-date>small{font-family:var(--mono);font-size:10px;letter-spacing:.2em;color:#bfcfbc}.panel-circuit{position:absolute;width:240px;height:177px;right:-42px;top:67px;color:#c2d4b7;opacity:.3;stroke:currentColor;stroke-width:1}.panel-bottom{position:relative;z-index:1;margin-top:24px;border-top:1px solid #60816c;display:flex;align-items:center;justify-content:space-between;min-height:65px;font-family:var(--mono);font-size:22px;gap:10px}.panel-bottom small{font-size:9px;letter-spacing:.04em}.panel-bottom i{font-size:13px;font-style:normal;color:#9fb49e;margin:0 10px}.panel-bottom>b{font-family:var(--sans);font-size:11px;letter-spacing:.04em}
.field-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#f0f2ea}.field-strip>.shell{display:grid;grid-template-columns:120px 1fr 1.2fr 1fr;align-items:center;min-height:66px;gap:25px}.strip-label{font-family:var(--mono);font-size:9px;letter-spacing:.13em;color:var(--muted)}.field-strip a{display:flex;align-items:center;gap:10px;font-size:12px;font-weight:600;white-space:nowrap}.field-letter{font-family:var(--mono);color:var(--orange);font-size:16px;font-weight:400}.field-strip a>span:last-of-type{font-size:9px;color:var(--muted);font-weight:400}.field-strip a>b{font-size:15px;margin-left:auto;font-weight:400}
.section-block{padding-top:58px}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:22px;margin-bottom:26px}.section-heading .eyebrow{color:var(--muted);font-size:10px;margin-bottom:9px}.section-heading h2{font-size:24px;font-weight:600;letter-spacing:.035em;line-height:1.5}.heading-count{display:inline-block;margin-left:17px;font-family:var(--mono);font-weight:400;font-size:16px;letter-spacing:.02em;color:var(--orange)}.text-link{font-size:11px;font-weight:600;white-space:nowrap;display:flex;align-items:center;justify-content:space-between;gap:18px}.section-heading>.text-link{padding-bottom:5px}.topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border-top:1px solid var(--ink)}.topic-card{padding:25px 25px 23px 0;border-bottom:1px solid var(--line);position:relative;display:flex;flex-direction:column;min-height:285px}.topic-card:nth-child(3n+2){padding-left:25px;border-left:1px solid var(--line);padding-right:25px}.topic-card:nth-child(3n){padding-left:25px;border-left:1px solid var(--line);padding-right:0}.card-eyebrow{display:flex;align-items:center;justify-content:space-between}.category{display:inline-flex;gap:6px;align-items:center;font-size:10px;font-weight:600;letter-spacing:.03em;white-space:nowrap}.category i{height:5px;width:5px;background:currentColor;border-radius:50%;flex-shrink:0}.category-a{color:#36715e}.category-b{color:#9c7030}.category-c{color:#526c9a}.index-number{font-family:var(--mono);font-size:12px;color:#a3ab9d;font-weight:400}.topic-card h3{font-size:17px;line-height:1.85;letter-spacing:.02em;font-weight:600;margin-top:17px;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.topic-card>p{font-size:11px;color:#718071;line-height:1.95;margin-bottom:20px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.topic-card>.text-link{margin-top:auto;align-self:flex-start;font-size:10px;gap:32px}.recent-section{padding-top:62px}.recent-section h2{font-size:22px}.recent-issues{border-top:1px solid var(--ink)}.issue-row{display:grid;grid-template-columns:83px minmax(0,1fr) 38px;gap:25px;padding:28px 0;border-bottom:1px solid var(--line);align-items:center}.issue-date{font-family:var(--mono);display:flex;flex-direction:column;align-items:flex-start;line-height:1.2;border-right:1px solid var(--line);min-height:92px;justify-content:center}.issue-date>span{font-size:10px;letter-spacing:.09em;color:var(--muted)}.issue-date>strong{font-size:38px;font-weight:400;letter-spacing:-.04em;margin-top:2px}.issue-date>small{font-size:9px;letter-spacing:.15em;color:var(--muted);margin-top:2px}.issue-meta{font-family:var(--mono);font-size:9px;letter-spacing:.09em;color:var(--muted);margin-bottom:6px}.issue-meta span{margin:0 8px;color:#a2aa9e}.issue-content h3{font-size:16px;line-height:1.8;font-weight:600;letter-spacing:.015em}.issue-content>p{font-size:11px;color:var(--muted);line-height:1.8;margin-top:7px;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}.issue-arrow{display:grid;place-items:center;width:34px;height:34px;border:1px solid var(--line);border-radius:50%;font-size:16px}.issue-arrow:hover{border-color:var(--green);background:var(--green);color:#fff}.tiny-categories{display:flex;gap:6px;margin-top:12px;flex-wrap:wrap}.tiny-category{font-size:9px;padding:2px 7px;border:1px solid #e2e7dc;line-height:1.5}.editorial-note{margin-top:60px;margin-bottom:70px;padding:32px;background:#edf0e5;display:flex;align-items:center;gap:24px;border-left:3px solid var(--green)}.note-mark{font-size:40px;font-weight:200;line-height:1;color:#72916b}.editorial-note h2{font-size:20px;letter-spacing:.03em;font-weight:600;margin-bottom:8px}.editorial-note p{font-size:12px;color:#657361;line-height:1.9}.note-caption{margin-left:auto;font-family:var(--mono);font-size:10px;letter-spacing:.14em;color:#8b9b82;white-space:nowrap}
.site-footer{border-top:1px solid var(--line);background:#eef0e8}.footer-top{display:flex;justify-content:space-between;gap:35px;padding-top:38px;padding-bottom:34px}.footer-brand{font-family:var(--mono);font-size:25px;font-weight:500;letter-spacing:.02em}.footer-brand>span{color:var(--orange);font-weight:300}.footer-brand small{font-size:10px;letter-spacing:.2em;margin-left:9px}.footer-top p{font-size:10px;color:var(--muted);line-height:1.9;margin-top:12px}.footer-links{display:flex;flex-direction:column;gap:9px;width:245px;font-size:11px}.footer-links>a{display:flex;justify-content:space-between}.footer-links details{margin-top:3px}.footer-links summary{font-size:10px;color:var(--muted)}.footer-links details p{max-width:245px}.footer-bottom{padding-top:15px;padding-bottom:18px;border-top:1px solid #d6ddcf;display:flex;justify-content:space-between;gap:20px;font-size:9px;color:#7a8776;letter-spacing:.025em}.footer-bottom>span:first-child{font-family:var(--mono);font-size:9px}
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0}.toc-group{font-size:10px;font-weight:600;color:var(--green);padding-top:15px;margin-bottom:9px}.toc-group:first-child{padding-top:0}.sticky-toc li>a{display:flex;align-items:baseline;gap:9px;font-size:10px;line-height:1.85;padding:7px 0;color:#71806f}.sticky-toc li>a:hover{color:var(--orange)}.sticky-toc li>a>span{font-family:var(--mono);font-size:9px;color:#a6b09b;flex-shrink:0}.toc-archive{display:block;border-top:1px solid var(--line);margin-top:25px;padding-top:17px;font-size:10px;font-weight:600}.group-heading{display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--ink);padding-bottom:14px;margin-bottom:26px}.group-heading>span{font-family:var(--mono);font-size:20px;color:var(--orange);line-height:1}.group-heading h2{font-size:18px;font-weight:600}.group-heading small{font-family:var(--mono);font-size:9px;margin-left:auto;color:var(--muted);letter-spacing:.09em}.article-group+.article-group{margin-top:45px}.digest-article{padding-bottom:30px;margin-bottom:30px;border-bottom:1px solid var(--line);scroll-margin-top:25px}.article-kicker{display:flex;justify-content:space-between;align-items:center;gap:10px}.article-kicker>span:first-child{font-family:var(--mono);font-size:10px;letter-spacing:.1em;color:var(--muted)}.digest-article h3{font-size:24px;line-height:1.8;letter-spacing:.025em;font-weight:600;margin-top:12px;margin-bottom:20px}.article-summary p{font-size:15px;line-height:2.15;color:#405246;margin-bottom:12px;overflow-wrap:anywhere}.read-more{margin:12px 0 18px}.read-more>summary{list-style:none;display:flex;justify-content:space-between;align-items:center;padding:9px 0;color:var(--green);font-size:11px;max-width:200px;border-bottom:1px solid #aab99f}.read-more 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.archive-title{padding:37px 0 36px}.archive-title>.eyebrow{color:var(--muted);margin-bottom:12px}.archive-title h1{font-size:38px;font-weight:600;letter-spacing:.06em;line-height:1.6}.archive-title>p:last-child{font-size:13px;color:var(--muted);margin-top:9px}.archive-search{padding:25px;background:#edf0e7;border:1px solid #e1e5d9}.search-controls{display:grid;grid-template-columns:1fr 205px;gap:12px}.search-box{display:flex;align-items:center;background:#fff;border:1px solid #d7dece;padding:0 15px;gap:12px;min-height:50px;position:relative}.search-box:focus-within{outline:2px solid var(--green);outline-offset:1px}.search-box svg{color:#8d9b85;flex-shrink:0}.search-box input{outline:none;border:0;background:none;font-size:13px;min-width:0;width:100%;padding:10px 0;color:var(--ink)}.search-box input::placeholder{color:#96a18e}.search-box input:focus-visible{outline:none}.search-box kbd{font-family:var(--mono);font-size:11px;padding:0 5px;border:1px solid #d8dfd1;color:#a1ac99;line-height:1.4;border-radius:2px}.month-selector{border:1px solid #d7dece;background:#fff;display:flex;align-items:center}.month-selector select{background:transparent;color:#4d614b;font-size:12px;width:100%;padding:13px;cursor:pointer;border-radius:0}.filter-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.filter-chip{border:1px solid #d2dcc8;border-radius:30px;padding:8px 16px;font-size:11px;display:flex;align-items:center;gap:7px;transition:background .15s}.filter-chip.is-active{color:#fff;background:var(--green);border-color:var(--green)}.filter-chip:hover{border-color:var(--green)}.filter-chip>i{height:5px;width:5px;display:inline-block;border-radius:50%;background:currentColor}.dot-a{color:#39775d}.dot-b{color:#ac7e2e}.dot-c{color:#6682ac}.filter-chip.is-active>i{color:#fff}.archive-layout{display:grid;grid-template-columns:180px minmax(0,1fr);gap:45px;padding-top:42px;padding-bottom:70px}.archive-sidebar{padding-right:26px;border-right:1px solid var(--line)}.archive-sidebar>.eyebrow{font-size:9px;color:var(--muted);margin-bottom:18px}.month-shortcuts{display:flex;flex-direction:column;gap:0}.month-shortcuts button{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding:15px 0;text-align:left;width:100%}.month-shortcuts button>span{font-family:var(--mono);font-size:10px;color:#8b9781;display:flex;align-items:baseline;gap:10px}.month-shortcuts b{font-size:23px;font-weight:400;color:#52654b}.month-shortcuts small{font-size:10px;color:#98a08f}.month-shortcuts button.is-active b,.month-shortcuts button:hover b{color:var(--orange)}.archive-side-note{font-size:10px;line-height:2.1;color:#9aa58f;margin-top:28px}.results-header{display:flex;align-items:baseline;justify-content:space-between;border-bottom:1px solid var(--ink);padding-bottom:17px;gap:12px}.results-header>p{font-size:11px;font-weight:500}.results-header strong{font-family:var(--mono);font-size:19px;font-weight:400;margin-right:7px}.sample-count{font-size:9px;font-weight:400;color:#8d9785;display:inline-block;margin-left:14px}.results-header>span{font-size:10px;white-space:nowrap;color:var(--muted)}.archive-results .issue-row{grid-template-columns:78px minmax(0,1fr) 34px;gap:22px;padding:28px 0}.archive-results .issue-content h3{font-size:15px}.archive-end{font-size:10px;color:#a0aa95;text-align:center;margin-top:35px;display:flex;gap:15px;align-items:center;justify-content:center}.archive-end span{font-size:8px}.empty-state{text-align:center;padding:60px 15px;border-bottom:1px solid var(--line)}.empty-state>span{font-size:40px;line-height:1.5;color:#899a7a}.empty-state h2{font-size:18px;font-weight:500;margin-top:12px}.empty-state p{font-size:12px;color:var(--muted);margin-top:9px}.solid-button{background:var(--green);color:#fff;padding:12px 23px;font-size:12px;margin-top:22px}
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@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* Keep article reading text comfortable on both desktop and mobile. */
.article-summary p,.idea-content p{font-size:16px}

.toc-title{list-style:none}.toc-title::-webkit-details-marker{display:none}.toc-expand{display:none;font-style:normal;margin-left:auto;font-size:18px;font-weight:300;line-height:1}.toc-disclosure[open] .toc-expand{transform:rotate(45deg)}
@media(max-width:850px){.toc-expand{display:inline}.toc-title{align-items:center}.toc-title>span{margin-bottom:0}}

.info-page{padding-bottom:70px;min-height:60vh}.info-content{max-width:780px}.info-content h2{font-size:22px;margin:30px 0 15px}.info-content p{margin-bottom:16px}.info-content a{text-decoration:underline;text-underline-offset:4px}.search-help{font-size:11px;color:var(--muted);margin-top:12px}.no-recent{padding:25px 0;font-size:14px;color:var(--muted)}

/* 現場と開発ノート: site-wide brand and the two manual corners (build-log / projects). */
.brand-site b{font-family:var(--sans);font-size:22px;letter-spacing:.08em;white-space:nowrap}.brand-site small{letter-spacing:.3em}.footer-brand-site{font-family:var(--sans);font-size:21px;letter-spacing:.06em}.corner-section .issue-meta{color:#536057}.article-row .issue-content>p{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.corner-page .archive-results{padding-top:28px;padding-bottom:50px}.corner-page .results-header{display:flex;justify-content:space-between;align-items:baseline;border-bottom:1px solid var(--ink);padding-bottom:14px;font-size:12px;color:var(--muted)}.corner-page .results-header strong{font-size:22px;color:var(--ink);margin-right:4px}.article-page .archive-title{padding-bottom:18px}.article-page .archive-title h1{font-size:30px;line-height:1.6}.article-page .archive-title>p:last-child{font-size:14px;color:#536057;margin-top:10px}.article-body{max-width:780px;padding-top:18px}.article-body h2{font-size:22px;margin:30px 0 15px}.article-body h3{font-size:18px;margin:24px 0 12px}.article-body h4{font-size:16px;margin:18px 0 10px}.article-body p,.article-body li{font-size:16px;line-height:2}.article-body ul,.article-body ol{padding-left:1.4em;margin:0 0 16px}.article-body pre{background:#edf1e8;border:1px solid var(--line);padding:14px 16px;overflow-x:auto;font-size:13px;line-height:1.7;margin:0 0 18px}.article-body code{font-family:var(--mono);font-size:.95em;background:#edf1e8;padding:1px 5px}.article-body pre code{background:none;padding:0}.article-body a{text-decoration:underline;text-underline-offset:4px}.article-page .issue-pagination{margin-top:36px}
@media(max-width:850px){.brand-site b{font-size:19px}}
@media(max-width:600px){.masthead{height:auto;flex-wrap:wrap;padding:10px 0 0;gap:6px}.brand-site b{font-size:18px;letter-spacing:.05em}.masthead nav{width:100%;margin-left:0;height:44px;justify-content:space-between;gap:8px;font-size:11px}.masthead nav>a:first-child{display:flex}.masthead nav>a[aria-current]::after{bottom:0}.article-page .archive-title h1{font-size:24px}.corner-page .results-header strong{font-size:18px}}