/* 10's lab — Context / Memory / Continuity */
:root{--ink:#172c39;--muted:#59676c;--paper:#f7f5ef;--line:#d8ddd7;--accent:#967035;--gold:#e2be80;--teal:#356a70;--body:17px;color-scheme:light}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Noto Sans CJK JP","Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-underline-offset:4px}button{font:inherit}a:focus-visible,button:focus-visible,summary:focus-visible,.table-scroll:focus-visible{outline:3px solid var(--teal);outline-offset:5px}.skip{position:fixed;top:-80px;left:20px;z-index:100;background:var(--paper);padding:12px}.skip:focus{top:12px}.masthead{height:80px;padding:0 max(28px,calc((100vw - 1240px)/2));display:flex;align-items:center;justify-content:space-between;background:var(--paper);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.brand{display:flex;gap:12px;align-items:center;text-decoration:none;font-family:Georgia,serif;font-size:22px}.brand-num{font-size:36px;border-right:1px solid #bac4c4;padding-right:12px;letter-spacing:-3px}.brand small{display:block;font:9px/1.5 monospace;letter-spacing:2px;margin-top:4px}.masthead nav{display:flex;gap:24px;align-items:center;font-size:12px}.masthead nav>a{text-decoration:none}.masthead button{border:1px solid #c8d0cc;padding:9px 12px;background:transparent;cursor:pointer;font-size:11px}.reading-progress{height:2px;background:transparent;position:fixed;top:79px;left:0;right:0;z-index:21}.reading-progress span{display:block;background:var(--accent);width:0;height:100%}.hero{background:var(--ink);color:var(--paper);padding:35px 28px 30px;overflow:hidden}.hero-inner{max-width:1180px;margin:auto}.eyebrow{border-bottom:1px solid #526068;display:flex;justify-content:space-between;padding-bottom:20px;font:10px monospace;letter-spacing:2px;color:#c3ccc9}.eyebrow span{color:#c6b899}.hero-grid{display:grid;grid-template-columns:1.1fr 1fr;align-items:center;gap:50px;padding:62px 0 44px}.kicker{font:10px monospace;letter-spacing:2px;color:#d9bc88;margin:0 0 24px}h1{font-family:"Noto Serif CJK JP","Yu Mincho",serif;font-size:clamp(42px,5vw,70px);font-weight:500;line-height:1.48;letter-spacing:.025em;margin:0}h1 em{font-style:normal;color:var(--gold)}.hero-deck{font-size:14px;line-height:2;color:#d0d8d6;margin:28px 0}.byline{font:9px monospace;letter-spacing:1.6px;display:flex;gap:16px;align-items:center;flex-wrap:wrap}.byline b{font-size:12px;font-weight:400;color:#e5cfab}.byline span{color:#aab9ba}.hero-visual{position:relative}.hero-visual svg{width:100%;height:auto}.hero-visual p{margin:0;text-align:right;font:16px/2 "Noto Serif CJK JP","Yu Mincho",serif;letter-spacing:.1em;color:#c7d4d3}.start{display:flex;justify-content:space-between;border-top:1px solid #526068;padding-top:20px;font-size:12px;text-decoration:none;letter-spacing:.1em}.start span{color:var(--gold);font-size:22px}.mobile-break{display:none}.overview{max-width:1180px;margin:auto;padding:85px 0 65px}.section-tag{font:10px monospace;letter-spacing:2px;color:var(--teal)}.overview>h2{font-family:"Noto Serif CJK JP","Yu Mincho",serif;font-size:33px;font-weight:500;line-height:1.65;margin:21px 0}.intro{font-size:16px;line-height:2.05;max-width:810px;color:var(--muted)}.report-cards{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin:38px 0}.report-card{border-top:1px solid var(--ink);border-bottom:1px solid var(--line);padding:26px 8px 28px 0;display:flex;gap:24px;text-decoration:none;transition:background .2s}.report-card:hover{background:#eeeee6}.card-num{font:italic 48px Georgia,serif;color:var(--accent);line-height:1}.report-card h3{font-size:19px;line-height:1.7;margin:12px 0}.report-card p{font-size:13px;line-height:1.9;color:var(--muted);margin:0 0 20px}.card-link{font-size:12px;color:var(--teal)}.editor-note{border-left:2px solid #9bafaa;padding:2px 0 2px 22px;max-width:950px}.editor-note b{font-size:12px;font-weight:600}.editor-note p{font-size:12px;line-height:1.9;color:var(--muted);margin:9px 0 0}.reader-layout{max-width:1180px;margin:auto;display:grid;grid-template-columns:230px minmax(0,1fr);gap:75px;padding-bottom:60px}.sidebar{position:relative}.sidebar details{position:sticky;top:106px;max-height:calc(100vh - 128px);overflow:auto;border-top:2px solid var(--ink);padding:18px 12px 15px 0;scrollbar-width:thin}.sidebar summary{cursor:pointer;list-style:none;font:11px monospace;letter-spacing:2px;margin-bottom:22px}.sidebar summary::-webkit-details-marker{display:none}.sidebar summary span{font:11px sans-serif;letter-spacing:0;float:right;color:var(--muted)}.toc-group{margin-bottom:25px;display:grid;gap:2px}.toc-group a{display:block;font-size:11px;text-decoration:none;line-height:1.7;padding:5px 10px;border-left:2px solid transparent;color:var(--muted);overflow-wrap:anywhere}.toc-group .toc-part{font-size:12px;font-weight:700;color:var(--ink);padding-left:0;margin-bottom:8px}.toc-group a:hover,.toc-group a[aria-current]{color:var(--ink);background:#ebece5;border-left-color:var(--accent)}.reports{min-width:0}.report-head{border-top:2px solid var(--ink);border-bottom:1px solid var(--line);padding:35px 0 29px;margin-bottom:45px}.report-head h2{font-family:"Noto Serif CJK JP","Yu Mincho",serif;font-size:37px;font-weight:500;line-height:1.6;margin:20px 0 14px}.report-head>p{font-size:14px;line-height:1.9;color:var(--muted)}.report-meta{font-size:11px;color:var(--muted);margin-top:22px}.prose{font-size:var(--body);line-height:2.05;overflow-wrap:anywhere}.prose p{margin:0 0 1.4em}.prose h2{font-size:23px;font-weight:600;line-height:1.65;border-bottom:1px solid var(--line);padding-bottom:16px;margin:62px 0 24px;letter-spacing:.015em}.prose>h2:first-child{margin-top:0}.prose h3{font-size:18px;line-height:1.8;margin:38px 0 18px}.prose a{color:var(--teal);text-decoration-thickness:1px}.prose a:hover{color:var(--accent)}.prose .cite{white-space:nowrap;font-size:.84em;font-weight:500}.prose ol,.prose ul{padding-left:1.5em;margin:24px 0}.prose li{padding-left:4px;margin-bottom:12px}.prose code{font: .82em monospace;background:#eaece5;border-radius:3px;padding:3px 5px}.prose img{display:block;width:100%;height:auto;background:white;border:1px solid var(--line);padding:12px}.prose figure{margin:30px 0}.prose figcaption{font-size:11px;text-align:center;color:var(--muted);margin-top:10px}.table-scroll{overflow-x:auto;max-width:100%;border:1px solid var(--line);margin:28px 0 36px;scrollbar-width:thin;background:#fcfbf7}table{width:100%;border-collapse:collapse;font-size:13px;line-height:1.8;min-width:580px}th{text-align:left;background:#e9eee8;font-weight:600;padding:15px 17px;border-bottom:1px solid #c6d0c7;vertical-align:top}td{padding:15px 17px;vertical-align:top;border-bottom:1px solid var(--line)}tr:last-child td{border-bottom:0}th:first-child,td:first-child{width:22%;min-width:120px}tr:nth-child(even) td{background:#f2f3ed}.next-report{display:grid;gap:15px;border-top:1px solid var(--line);margin:55px 0 80px;padding:25px 0;color:var(--teal);text-decoration:none}.next-report span{font-size:11px;color:var(--muted)}.next-report b{font-size:18px;line-height:1.8;font-weight:500}.closing{margin-top:75px;padding:40px 0;border-top:1px solid var(--ink)}.closing h2{font:500 28px/1.8 "Noto Serif CJK JP","Yu Mincho",serif}.closing p{font-size:14px;line-height:1.9;color:var(--muted)}.closing a{font-size:12px;display:inline-block;margin-top:20px}footer{border-top:1px solid var(--line);max-width:1180px;margin:auto;padding:30px 0 40px;display:flex;gap:25px;align-items:center;font-size:10px;color:var(--muted)}footer b{font:20px Georgia,serif;color:var(--ink)}footer a{margin-left:auto}.js-only{display:none}.js .js-only{display:initial}
@media(min-width:1500px){.hero-grid{padding:75px 0 55px}}
@media(max-width:1250px){.overview,.reader-layout,footer{margin-left:32px;margin-right:32px}.reader-layout{gap:45px;grid-template-columns:205px minmax(0,1fr)}}
@media(max-width:900px){.hero-grid{gap:0}.hero-visual{margin-right:-75px;opacity:.85}.hero-visual p{padding-right:75px;font-size:13px}.reader-layout{display:block}.sidebar{margin-bottom:35px}.sidebar details{position:static;max-height:none;padding:18px;border:1px solid var(--line)}.sidebar details[open] nav{max-height:330px;overflow:auto}.sidebar summary{margin:0}.sidebar details[open] summary{margin-bottom:20px}.sidebar summary:after{content:'＋';float:right;margin-right:20px}.sidebar details[open] summary:after{content:'−'}.toc-group a{font-size:13px;padding:7px 10px}.report-head h2{font-size:34px}.prose{max-width:800px}.overview{padding-top:60px}.report-cards{gap:24px}.report-card{gap:16px}.card-num{font-size:38px}.report-card h3{font-size:17px}footer{flex-wrap:wrap}}
@media(max-width:600px){html{scroll-padding-top:85px}.masthead{height:67px;padding:0 20px}.brand{font-size:19px;gap:9px}.brand-num{font-size:30px;padding-right:10px}.brand small{font-size:7px;letter-spacing:1.4px}.masthead nav{gap:14px;font-size:10px}.masthead button{display:none!important}.reading-progress{top:66px}.hero{padding:25px 24px 22px}.eyebrow{font-size:8px;letter-spacing:1px;padding-bottom:17px;gap:12px}.eyebrow span{font-size:7px;letter-spacing:.7px}.hero-grid{display:block;padding:38px 0 28px;position:relative}.kicker{font-size:8px;letter-spacing:1.4px;margin-bottom:20px}h1{font-size:43px;line-height:1.5;position:relative;z-index:1}.hero-deck{font-size:12px;line-height:2;margin:24px 0}.byline{font-size:7px;letter-spacing:1px;gap:9px;position:relative;z-index:1}.byline b{font-size:10px}.hero-visual{position:absolute;top:65px;right:-100px;width:280px;opacity:.28;pointer-events:none}.hero-visual p{display:none}.start{font-size:11px}.overview,.reader-layout,footer{margin-left:24px;margin-right:24px}.overview{padding:48px 0 40px}.overview>h2{font-size:26px;line-height:1.7;margin-top:18px}.intro{font-size:14px;line-height:2}.report-cards{grid-template-columns:1fr;gap:0;margin:30px 0}.report-card{padding:23px 0;gap:20px}.report-card+.report-card{border-top:0}.report-card h3{font-size:18px;margin:9px 0}.report-card p{font-size:12px;margin-bottom:16px}.section-tag{font-size:9px;letter-spacing:1.5px}.editor-note{padding-left:16px}.editor-note p{font-size:11px;line-height:1.9}.report-head{padding-top:28px;margin-bottom:32px}.report-head h2{font-size:28px;line-height:1.6;margin-top:18px}.report-head>p{font-size:12px}.report-meta{font-size:10px}.prose{font-size:15px;line-height:2.05}.prose h2{font-size:20px;margin-top:45px;padding-bottom:12px}.prose h3{font-size:17px;margin-top:30px}.prose p{margin-bottom:1.4em}table{font-size:12px;min-width:560px}td,th{padding:13px 14px}.table-scroll{margin-top:24px;margin-bottom:28px}.prose img{min-width:560px}.prose figure{overflow-x:auto}.next-report{margin-bottom:55px}.next-report b{font-size:16px}.closing{margin-top:50px;padding-top:30px}.closing h2{font-size:24px}.closing p{font-size:12px}footer{gap:18px;padding:24px 0 30px}footer span{flex-basis:100%;order:2;font-size:9px}footer a{font-size:10px}.mobile-break{display:block}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
@media print{@page{size:A4;margin:18mm}html{scroll-behavior:auto}body{background:white;color:#172c39;font-size:10pt}.masthead,.reading-progress,.sidebar,.start,.skip,.report-cards,.next-report,footer,.closing>a{display:none!important}.hero{background:white;color:#172c39;padding:0;overflow:visible}.hero-inner,.overview,.reader-layout{max-width:none;margin:0}.hero-grid{display:block;padding:24px 0}.hero-visual{display:none}.eyebrow,.kicker,.hero-deck,.byline,.byline b,.byline span{color:#172c39}h1{font-size:34pt;line-height:1.4}h1 em{color:#967035}.hero-deck{font-size:12pt}.overview{padding:20px 0}.overview h2{font-size:22pt}.intro{font-size:11pt}.editor-note p{font-size:9pt}.reader-layout{display:block;padding:0}.report-head{break-before:page;margin-bottom:24px}.report-head h2{font-size:27pt}.prose{font-size:10pt;line-height:1.8}.prose h2{font-size:16pt;break-after:avoid;margin-top:28px}.prose h3{font-size:12pt;break-after:avoid}.table-scroll{overflow:visible;border:0}table{min-width:0;font-size:8pt;line-height:1.5;table-layout:fixed}thead{display:table-header-group}tr{break-inside:avoid}th,td{padding:7px}th:first-child,td:first-child{min-width:0}.prose img{min-width:0;max-width:100%}.prose figure{overflow:visible;break-inside:avoid}a{text-decoration:none}.closing{break-inside:avoid}}
/* English-first edition and language navigation */
.masthead nav{margin-left:auto}.language-switch{display:flex;align-items:center;gap:9px;margin-left:24px;padding-left:20px;border-left:1px solid var(--line);font-size:12px;white-space:nowrap}.language-switch a{text-decoration:none;padding:8px 0;color:var(--muted)}.language-switch a[aria-current]{color:var(--ink);font-weight:700;border-bottom:2px solid var(--accent)}.language-switch span{color:#8f9c9d;font-size:10px}html[lang=en] .prose{font-size:18px;line-height:1.85;overflow-wrap:break-word}html[lang=en] .prose a{overflow-wrap:anywhere}html[lang=en] h1{font-family:Georgia,"Times New Roman",serif;line-height:1.12;letter-spacing:-.03em;font-size:clamp(52px,5.5vw,80px)}html[lang=en] .overview>h2,html[lang=en] .report-head h2,html[lang=en] .closing h2{font-family:Georgia,"Times New Roman",serif;line-height:1.25}html[lang=en] .report-head h2{font-size:42px}html[lang=en] .report-head>p{max-width:650px}html[lang=en] .hero-visual p{font-family:Georgia,"Times New Roman",serif;letter-spacing:0;line-height:1.7}html[lang=en] .toc-group a{line-height:1.5}html[lang=en] .report-card h3{line-height:1.4}html[lang=en] .prose h2{line-height:1.4}html[lang=en] .prose h3{line-height:1.5}
@media(max-width:900px){.masthead nav{gap:16px}.language-switch{margin-left:17px;padding-left:15px}}
@media(max-width:600px){.masthead nav{display:none}.language-switch{margin-left:auto;padding-left:15px;font-size:12px;gap:9px}.masthead{gap:8px}html[lang=en] h1{font-size:49px;line-height:1.16}html[lang=en] .hero-grid{padding:38px 0 28px}html[lang=en] .hero-deck{font-size:13px;line-height:1.85}html[lang=en] .overview>h2{font-size:29px;line-height:1.3}html[lang=en] .prose{font-size:16px;line-height:1.85}html[lang=en] .report-head h2{font-size:31px;line-height:1.3}html[lang=en] .report-head>p{font-size:13px}html[lang=en] .report-card h3{font-size:19px}html[lang=en] .editor-note p{font-size:12px;line-height:1.75}html[lang=en] .prose h2{font-size:21px}html[lang=en] .prose h3{font-size:18px}html[lang=en] .closing h2{font-size:27px}.prose figure figcaption{position:sticky;left:0}}
@media(max-width:350px){html[lang=en] h1{font-size:43px}.language-switch{padding-left:10px;font-size:11px}.brand{gap:6px}}
@media print{.language-switch{display:none}html[lang=en] h1{font-size:36pt}html[lang=en] .prose{font-size:10pt;line-height:1.65}html[lang=en] .report-head h2{font-size:27pt}}