/* 自動生成（scripts/build-columns.py）← columns/column-base.css（GPT の基本トークン・文字設定）＋ columns/column-nav.css（GPT の navigation.css そのまま。.col-gpt 配下にスコープしただけ）。
   記事固有 CSS と同じだけ詳細度を上げないと、GPT 側の読み込み順（concept → navigation → article-layout）が崩れる */

.col-gpt{--ink:#17364c;--muted:#536c7b;--navy:#174b68;--aqua:#eaf7fa;--aqua-deep:#c4e9f0;--blue:#3c91b3;--brown:#80654d;--paper:#fff;--line:#cfe3e9;--content:1160px}
.col-gpt *,.col-gpt *::before,.col-gpt *::after{box-sizing:border-box}
.col-gpt{scroll-behavior:smooth;scroll-padding-top:24px}
.col-gpt{margin:0;background:var(--paper);color:var(--ink);font-family:"M PLUS 1","Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;font-size:16px;font-weight:400;line-height:1.95;letter-spacing:.035em;-webkit-font-smoothing:antialiased}
.col-gpt img,.col-gpt svg{max-width:100%;vertical-align:middle}.col-gpt img{height:auto}.col-gpt figure{margin:0}.col-gpt button,.col-gpt a{-webkit-tap-highlight-color:transparent}.col-gpt a{color:var(--navy);text-underline-offset:.25em}.col-gpt button{font:inherit}.col-gpt b,.col-gpt strong{font-weight:500}.col-gpt p{margin:0 0 1.3em}.col-gpt h1,.col-gpt h2,.col-gpt h3{font-weight:500;letter-spacing:.025em;margin:0}.col-gpt a:focus-visible,.col-gpt button:focus-visible{outline:3px solid #3789ae;outline-offset:5px}.col-gpt ::selection{background:#c5eaf0;color:var(--ink)}.col-gpt [hidden]{display:none!important}

@media(max-width:760px){.col-gpt{font-size:16px;line-height:1.95;letter-spacing:.025em}}
@media(min-width:761px){.col-gpt{font-size:18px}}
@media(prefers-reduced-motion:reduce){.col-gpt *,.col-gpt *::before,.col-gpt *::after{animation:none!important;transition:none!important}}


.col-gpt .colnav-mobile,.col-gpt .colnav-end{width:min(calc(100% - 80px),830px);margin-inline:auto}
.col-gpt .colnav-mobile{padding:16px 0 0}
.col-gpt .colnav-mobile details{border:1px solid #cfdee5;border-radius:12px;background:#fff}
.col-gpt .colnav-mobile summary{display:flex;align-items:center;gap:12px;padding:15px 20px;min-height:54px;cursor:pointer;list-style:none;font-size:15px;font-weight:500;color:#24536b}
.col-gpt .colnav-mobile summary::-webkit-details-marker{display:none}
.col-gpt .colnav-mobile summary span{margin-left:auto;color:#69818c;font-size:12px;font-weight:400}
.col-gpt .colnav-mobile summary::after{content:"+";font:22px/1 Arial,sans-serif;font-weight:400}
.col-gpt .colnav-mobile details[open]>summary::after{content:"−"}
.col-gpt .colnav-mobile details[open]>summary{border-bottom:1px solid #e4edf0}
.col-gpt .colnav-mobile nav{padding:10px 16px 14px}
.col-gpt .colnav-layout{min-width:0}
.col-gpt .colnav-content{min-width:0}
.col-gpt .colnav-side{display:none}
.col-gpt .colnav-box{padding:24px 0;border-bottom:1px solid #dce7ec}
.col-gpt .colnav-box:first-child{padding-top:0}
.col-gpt .colnav-box:last-child{border-bottom:0;padding-bottom:0}
.col-gpt .colnav-heading{margin:0 0 13px!important;color:#24536b;font-size:14px!important;line-height:1.6!important;font-weight:500!important;letter-spacing:.025em!important}
.col-gpt .colnav-toc{list-style:none;padding:0;margin:0;counter-reset:colnav-index}
.col-gpt .colnav-toc li{counter-increment:colnav-index;margin:0}
.col-gpt .colnav-toc a{position:relative;display:flex;align-items:baseline;gap:9px;min-height:40px;padding:9px 9px 9px 0;border-bottom:1px solid #eef3f5;color:#536c7b;font-size:13px;line-height:1.7;text-decoration:none;letter-spacing:.01em;border-radius:4px}
.col-gpt .colnav-toc li:last-child>a{border-bottom:0}
.col-gpt .colnav-toc a::before{content:counter(colnav-index,decimal-leading-zero);flex:0 0 20px;font-family:Arial,sans-serif;font-size:10px;color:#8ba1ac}
.col-gpt .colnav-toc a[aria-current="location"]{background:#edf7fa;color:#174b68;font-weight:500;padding-left:8px}
.col-gpt .colnav-toc a[aria-current="location"]::before{color:#3b91ad}
.col-gpt .colnav-toc a:hover{color:#174b68;text-decoration:underline;text-underline-offset:4px}
.col-gpt .colnav-categories{padding:0;margin:0;list-style:none}
.col-gpt .colnav-categories a{display:flex;align-items:center;gap:8px;min-height:44px;padding:8px 0;color:#536c7b;text-decoration:none;font-size:13px;line-height:1.6}
.col-gpt .colnav-categories a span{margin-left:auto;font-family:Arial,sans-serif;color:#78929f;font-size:11px}
.col-gpt .colnav-categories a::after{content:"›";color:#6890a1;font-size:18px}
.col-gpt .colnav-tags{display:flex;gap:7px;flex-wrap:wrap;padding:0;margin:0;list-style:none}
.col-gpt .colnav-tags a{display:flex;align-items:center;min-height:36px;border:1px solid #cfdee5;border-radius:999px;padding:5px 11px;background:#fff;color:#536c7b;font-size:11px;line-height:1.5;letter-spacing:0;text-decoration:none}
.col-gpt .colnav-tags a:hover{border-color:#77a3b5;background:#f0f8fa;color:#174b68}
.col-gpt .colnav-reading{display:grid;grid-template-columns:64px minmax(0,1fr);align-items:start;gap:10px;color:#17364c;text-decoration:none}
.col-gpt .colnav-reading img{display:block;width:64px;height:64px;object-fit:cover;border-radius:6px;background:#f2f7f8}
.col-gpt .colnav-reading span{font-size:12px;line-height:1.8;letter-spacing:.01em}
.col-gpt .colnav-reading:hover span{text-decoration:underline;text-underline-offset:4px}
.col-gpt .colnav-all{display:flex;align-items:center;justify-content:space-between;min-height:44px;margin:18px 0 0;color:#24536b;font-size:12px;text-decoration:none}
.col-gpt .colnav-all::after{content:"→";font-family:Arial,sans-serif}
.col-gpt .colnav-end{padding:42px 0 56px;border-top:1px solid #dce7ec}
.col-gpt .colnav-end-inner{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:36px}
.col-gpt .colnav-end .colnav-box{padding:0;border:0}
.col-gpt .colnav-end .colnav-reading{grid-template-columns:86px minmax(0,1fr)}
.col-gpt .colnav-end .colnav-reading img{width:86px;height:72px}
.col-gpt .colnav-end .colnav-reading span{font-size:13px}
.col-gpt .colnav-end>.colnav-all{justify-content:center;gap:22px;width:fit-content;margin:32px auto 0}
.col-gpt .colnav-listing{font-family:"M PLUS 1","Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;background:#fff;color:#17364c;margin:0;line-height:1.8}
.col-gpt .colnav-listing *,.col-gpt .colnav-listing *::before,.col-gpt .colnav-listing *::after{box-sizing:border-box}
.col-gpt .colnav-listing a:focus-visible,.col-gpt .colnav-layout a:focus-visible,.col-gpt .colnav-mobile summary:focus-visible{outline:2px solid #3789ae;outline-offset:4px}
.col-gpt .colnav-notice{padding:8px 20px;text-align:center;color:#78624f;background:#f6f2ed;font-size:11px}
.col-gpt .colnav-list-wrap{max-width:1000px;width:calc(100% - 48px);margin:48px auto 72px}
.col-gpt .colnav-back{font-size:13px;color:#537c90;text-decoration:none}
.col-gpt .colnav-list-wrap h1{font-size:30px;font-weight:500;margin:22px 0 14px}
.col-gpt .colnav-filter-title{font-size:14px;font-weight:500;margin:22px 0 10px}
.col-gpt .colnav-list-filter{display:flex;flex-wrap:wrap;gap:8px}
.col-gpt .colnav-list-filter a{padding:8px 14px;min-height:40px;border:1px solid #cfdee5;border-radius:999px;font-size:13px;color:#24536b;text-decoration:none}
.col-gpt .colnav-list-filter a[aria-current="true"]{border-color:#24536b;background:#edf7fa}
.col-gpt .colnav-filter-status{font-size:14px;margin:28px 0 20px;color:#536c7b}
.col-gpt .colnav-card-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.col-gpt .colnav-list-card{border:1px solid #dce7ec;border-radius:14px;overflow:hidden}
.col-gpt .colnav-list-card>a{display:block;color:#17364c;text-decoration:none}
.col-gpt .colnav-list-card img{width:100%;height:210px;object-fit:contain;background:#f1f8fa;display:block}
.col-gpt .colnav-list-card h2{font-size:19px;font-weight:500;line-height:1.7;margin:8px 0}
.col-gpt .colnav-list-card-body{padding:22px}
.col-gpt .colnav-list-card small{color:#5793a6;font-size:12px}
.col-gpt .colnav-list-card p{font-size:14px;color:#536c7b;margin-bottom:0}
.col-gpt .colnav-list-card[hidden]{display:none}

@media(min-width:761px){.col-gpt .colnav-content .section>.container{max-width:830px}.col-gpt .colnav-content .ufb-product-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1200px){
 .col-gpt .colnav-layout{display:grid;grid-template-columns:minmax(0,830px) 220px;column-gap:40px;max-width:1090px;width:calc(100% - 64px);margin-inline:auto;align-items:start}
 .col-gpt .colnav-layout>.colnav-content .section>.container{width:100%;max-width:830px}
 .col-gpt .colnav-mobile{display:none}
 .col-gpt .colnav-side{display:block;align-self:stretch;padding-top:100px;padding-bottom:100px}
 .col-gpt .colnav-side-inner{position:static;max-height:none;overflow:visible;padding:0}
 .col-gpt .colnav-end{grid-template-columns:1fr;width:100%;padding:32px 0 60px}
 .col-gpt .colnav-end-inner{grid-template-columns:1fr}
 .col-gpt .colnav-end .colnav-box:not(:first-child){display:none}
 .col-gpt .colnav-end .colnav-reading{max-width:540px}
 .col-gpt .colnav-layout--article{grid-template-columns:minmax(0,830px) 220px;max-width:1090px}
 .col-gpt .colnav-layout--article .colnav-side{padding-top:32px}
}
.col-gpt .colnav-plain-article{padding:40px 0 60px;max-width:830px;width:calc(100% - 48px);margin:auto}
.col-gpt .colnav-plain-article h1{font-size:30px;line-height:1.65;font-weight:500}
.col-gpt .colnav-plain-article h2{font-size:23px;line-height:1.75;font-weight:500;padding-top:30px;margin:32px 0 18px;border-top:1px solid #cfdee5;scroll-margin-top:24px}
.col-gpt .colnav-plain-article h3{font-size:19px;font-weight:500;margin-top:30px}
.col-gpt .colnav-plain-article p,.col-gpt .colnav-plain-article li{font-size:16px;line-height:2}
.col-gpt .colnav-plain-article img{max-width:100%;height:auto;display:block}
.col-gpt .colnav-plain-article figure{margin:32px 0}
.col-gpt .colnav-plain-article figcaption{font-size:12px;color:#536c7b}
.col-gpt .colnav-plain-article .col-points{padding:22px;background:#f0f8fa;border-radius:12px}
@media(min-width:1200px){.col-gpt .colnav-layout--article .colnav-plain-article{width:100%}}
@media(max-width:760px){
 .col-gpt .colnav-mobile,.col-gpt .colnav-end{width:calc(100% - 32px)}
 .col-gpt .colnav-mobile{padding-top:16px}
 .col-gpt .colnav-mobile summary{padding:13px 16px;font-size:14px}
 .col-gpt .colnav-toc a{min-height:44px;font-size:13px}
 .col-gpt .colnav-end{padding:30px 0 36px}
 .col-gpt .colnav-end-inner{grid-template-columns:1fr;gap:28px}
 .col-gpt .colnav-end .colnav-heading{font-size:15px!important}
 .col-gpt .colnav-categories a{font-size:14px}
 .col-gpt .colnav-tags a{min-height:40px;font-size:12px}
 .col-gpt .colnav-list-wrap{width:calc(100% - 32px);margin-top:28px}
 .col-gpt .colnav-list-wrap h1,.col-gpt .colnav-plain-article h1{font-size:25px}
 .col-gpt .colnav-card-grid{grid-template-columns:1fr}
 .col-gpt .colnav-plain-article{width:calc(100% - 32px)}
}
@media(prefers-reduced-motion:reduce){.col-gpt{scroll-behavior:auto}}
@media print{.col-gpt .colnav-mobile,.col-gpt .colnav-side,.col-gpt .colnav-end,.col-gpt .colnav-notice{display:none!important}.col-gpt .colnav-layout{display:block;width:auto;max-width:none}}


@media(min-width:1200px){
 .col-gpt .colnav-side .colnav-heading{font-size:16px!important;line-height:1.65!important}
 .col-gpt .colnav-side .colnav-reading span{font-size:14px;line-height:1.8}
 .col-gpt .colnav-side .colnav-categories a{font-size:15px}
 .col-gpt .colnav-side .colnav-categories a span{font-size:12px}
 .col-gpt .colnav-side .colnav-tags a{font-size:12px;min-height:38px}
 .col-gpt .colnav-side .colnav-all{font-size:14px}
 .col-gpt .colnav-side .colnav-toc a{font-size:14px;min-height:44px}
 .col-gpt .colnav-side .colnav-toc a::before{font-size:11px}
 .col-gpt .colnav-sticky-toc{margin-top:30px;padding-top:24px!important;border-top:1px solid #dce7ec;border-bottom:0;background:#fff}
}
@media(min-width:1200px) and (min-height:650px){.col-gpt .colnav-sticky-toc{position:sticky;top:24px}}

/* ---- columns/column-sources.css（参考資料・出典の開閉ブロック。GPT の規則の写し） ---- */

.col-gpt .article-sources{max-width:960px;margin-bottom:36px;border-top:1px solid #cfdee4;border-bottom:1px solid #cfdee4;scroll-margin-top:32px}
.col-gpt .article-sources summary{min-height:60px;padding:17px 4px;cursor:pointer;color:var(--ink);font-size:16px;line-height:1.8;font-weight:500}
.col-gpt .sources-hint{font-size:13px;color:var(--muted);font-weight:400;margin-left:20px}
.col-gpt .sources-body{padding:0 4px 24px;font-size:14px;line-height:1.9}
.col-gpt .sources-body>p{max-width:760px;margin:0 0 20px}
.col-gpt .sources-body ul{display:grid;gap:16px;list-style:none;padding:0;margin:0}
.col-gpt .sources-body li>span{display:block;color:var(--muted);font-size:13px;margin-top:3px}
.col-gpt .article-sources summary:focus-visible{outline:2px solid #247b9e;outline-offset:4px}
@media(max-width:760px){.col-gpt .article-sources summary{font-size:15px}
.col-gpt .sources-hint{display:block;margin:3px 0 0 20px;font-size:12px}
.col-gpt .sources-body{font-size:14px}
.col-gpt .sources-body li>span{font-size:13px}}

.col-gpt .colnav-plain-article .article-sources{max-width:none;margin:40px 0 0}
.col-gpt .colnav-plain-article .sources-body p,.col-gpt .colnav-plain-article .sources-body li{font-size:14px;line-height:1.9}