:root{color-scheme:light;--ink:#14212e;--blue:#1659cf;--muted:#586675;--line:#dbe3ed}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#f4f7fb;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN",Meiryo,sans-serif}a{color:var(--blue);text-underline-offset:4px}a:focus-visible{outline:3px solid var(--blue);outline-offset:5px}.brand{max-width:1050px;margin:auto;padding:24px 32px;border-bottom:1px solid var(--line);font-size:15px;font-weight:700}.layout{max-width:1050px;margin:auto;padding:44px 32px 80px;display:grid;grid-template-columns:190px minmax(0,1fr);gap:50px}aside{align-self:start;position:sticky;top:32px}.number{font-size:76px;font-weight:800;letter-spacing:-.06em;line-height:1;color:var(--blue);margin:12px 0 24px}.eyebrow{font-size:13px;letter-spacing:.08em;font-weight:700;color:var(--muted)}time{font-size:14px;color:var(--muted)}nav{margin-top:38px;border-top:1px solid var(--line)}nav a{display:block;padding:18px 0;border-bottom:1px solid var(--line);font-size:14px;line-height:1.7;text-decoration:none;color:var(--ink)}main{min-width:0}h1{font-size:clamp(28px,3.3vw,40px);letter-spacing:-.035em;line-height:1.5;margin:0 0 14px}.subtitle{font-size:17px;line-height:1.8;color:var(--muted);margin:0 0 28px}.listen{background:white;border:1px solid var(--line);border-top:3px solid var(--blue);border-radius:4px;padding:16px;margin:0 0 38px}.listen-label{display:flex;justify-content:space-between;align-items:center;font-size:14px;margin-bottom:10px}.listen-label strong{color:var(--blue)}iframe{width:100%;height:220px;border:0;display:block;background:white}.listen>a{font-size:13px}article{font-size:17px;line-height:2.05;letter-spacing:.015em}article p{margin:0 0 1.7em}h2{font-size:25px;line-height:1.65;letter-spacing:-.02em;border-top:1px solid var(--line);padding-top:26px;margin:58px 0 26px;scroll-margin-top:24px}h2 small{display:block;color:var(--blue);font-size:14px;letter-spacing:.08em;margin-bottom:7px}footer{font-size:13px;color:var(--muted);line-height:1.8;border-top:1px solid var(--line);padding-top:24px;margin-top:44px}@media(max-width:760px){.brand{padding:18px 22px}.layout{display:block;padding:28px 22px 56px}aside{position:static;display:flex;align-items:center;gap:16px;margin-bottom:25px}.number{font-size:42px;margin:0}.eyebrow,nav{display:none}article{font-size:16px;line-height:2}h2{font-size:23px}.listen{padding:10px;margin-bottom:30px}iframe{height:240px}h1{font-size:29px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}@media print{body{background:white}aside,.listen{display:none}.layout{display:block;max-width:760px;padding:0}h2{break-after:avoid}}
.takeaways{margin-top:48px;padding:28px;border:2px solid #a9c6f5;border-left:6px solid var(--blue);border-radius:12px;background:#fff}.takeaways h2{border:0;padding:0;margin:0 0 22px;font-size:23px}.takeaways ol{list-style:none;counter-reset:point;padding:0;margin:0}.takeaways li{counter-increment:point;position:relative;padding:0 0 20px 44px;margin:0 0 20px;border-bottom:1px solid var(--line)}.takeaways li:last-child{padding-bottom:0;margin-bottom:0;border-bottom:0}.takeaways li:before{content:counter(point);position:absolute;left:0;top:2px;width:28px;height:28px;display:grid;place-items:center;background:var(--blue);color:white;border-radius:50%;font-size:14px;font-weight:700}.takeaways strong{display:block;font-size:18px;line-height:1.7;margin-bottom:6px}.takeaways p{font-size:16px;line-height:1.9;margin:0;color:#394b5f}@media(max-width:760px){.takeaways{padding:22px 18px}.takeaways h2{font-size:21px}.takeaways strong{font-size:17px}.takeaways li{padding-left:38px}}.inline-player{min-height:160px}.listen .fbx-cta-button{display:none!important}.listen{padding:12px;margin-bottom:24px}.listen-label{margin-bottom:12px}@media(max-width:760px){.brand{padding:14px 20px}.layout{padding-top:20px}aside{margin-bottom:16px}h1{font-size:27px}.subtitle{margin-bottom:18px}.inline-player{min-height:230px}.listen{padding:8px;margin-bottom:22px}}
.article-diagram{margin:38px 0 44px}.article-diagram img{display:block;width:100%;height:auto;border-radius:14px}.article-diagram figcaption{font-size:14px;line-height:1.8;color:var(--muted);margin-top:12px}@media(max-width:760px){.article-diagram{margin:28px -6px 34px}}

.recent{margin-top:40px;border-top:1px solid var(--line);padding-top:22px}.recent h2{margin:0 0 12px;padding:0;border:0;font-size:20px}.recent ul{padding-left:20px}.recent li{margin:10px 0;line-height:1.7}.landing{max-width:600px;margin:15vh auto;padding:24px;font-size:17px;line-height:1.9}/* Visual brief: relations stay readable as HTML at mobile width. */
.overview{background:#eaf1ff;border:1px solid #bdd0ee;border-top:4px solid var(--blue);padding:26px;margin:28px 0;border-radius:12px;font-size:16px;line-height:1.85}.kicker{font-size:13px;color:#31547f;font-weight:700;letter-spacing:.08em}.overview .thesis{font-size:25px;font-weight:800;line-height:1.6;margin:8px 0 14px}.overview p{margin:0 0 20px}.overview-map{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;gap:8px;align-items:center}.overview-map a{text-decoration:none;color:var(--ink);padding:8px 0;min-height:44px}.overview-map b,.overview-map span:not(.map-arrow){display:block}.overview-map b{font-size:17px;color:#194c9f}.overview-map a span{font-size:13px}.map-arrow{font-size:20px;color:var(--blue)}.brief-section{margin-top:50px}.brief-section h2{margin:0 0 16px;padding-top:26px;font-size:26px}.brief-section p{line-height:1.9;margin:0 0 20px}.section-answer{font-size:18px;font-weight:600}.html-diagram{background:white;border:1px solid #ccd9e8;border-radius:14px;margin:24px 0;padding:24px;line-height:1.7}.html-diagram figcaption{font-weight:700;font-size:15px;margin-bottom:22px;color:#425a74}.parent-node{padding:14px;border:2px solid #779dce;background:#f0f5fd;text-align:center;font-weight:700;border-radius:8px}.branch-label{text-align:center;color:#42648a;font-size:14px;margin:12px 0}.task-chain{padding:0;margin:0;list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:10px;counter-reset:step}.task-chain li{border:1px solid #c5d2e2;background:#f8fafc;border-radius:7px;padding:12px 8px;font-size:15px;counter-increment:step}.task-chain li:before{content:counter(step) ' ';font-weight:700;color:var(--blue)}.diagram-result{border-top:2px solid #88abdc;padding:18px 8px 0;text-align:center;margin-top:22px}.diagram-result span{display:block;font-size:14px;color:#425a74}.diagram-result strong{display:block;font-size:19px;line-height:1.7;margin:7px 0}.note-pair,.compare-grid,.role-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.note-pair{margin:26px 0}.brief-section h3{font-size:18px;line-height:1.7;margin:0 0 12px}.note-pair p{font-size:16px;margin:0}.boundary,.diagram-caveat{font-size:14px!important;color:#536276;line-height:1.85!important;margin:18px 0 0!important}.boundary{border-left:3px solid #aab9cd;padding-left:14px}.workflow{padding:16px;background:#f5f7fa;border-radius:9px}.workflow.after{background:#edf4ff}.workflow h3{font-size:17px}.flow-node{border:1px solid #bdcbdc;background:white;padding:12px;border-radius:7px;font-size:15px}.flow-node.ai{background:#e8f0fd;border-color:#7294c5}.flow-arrow{display:block;text-align:center;color:#506a8e;padding:5px}.connected{border:2px solid #668cbd;border-radius:9px;padding:10px 8px}.connected-label{font-size:12px;color:#31547f;display:block;margin-bottom:6px}.flow-insight{font-size:14px;margin:16px 0 0!important}.flow-insight strong{display:block;color:#1c4d94}.role{padding:18px;background:#edf4ff;border-top:3px solid #4173b9;border-radius:7px}.role.owner{background:#f5f4ef;border-color:#817243}.role ul{padding:0 0 0 20px;margin:0 0 14px;font-size:16px}.role li{margin:8px 0}.role p{font-size:13px;margin:0;color:#536276}.action-box{padding:22px;background:#eef4fa;border:1px solid #becfe4;border-radius:10px;margin-top:28px}.action-box h3{margin:8px 0 12px}.action-box p:last-child{margin-bottom:0}.takeaways{margin-top:40px}article{line-height:1.9}.overview a:focus-visible{outline:3px solid var(--blue)}
@media(max-width:760px){.overview{padding:20px 18px;margin-top:20px}.overview .thesis{font-size:21px}.overview-map{grid-template-columns:1fr;gap:0}.overview-map a{display:flex;align-items:center;gap:14px}.overview-map a span{font-size:13px}.overview-map .map-arrow{display:none}.overview-map a+a{border-top:1px solid #c4d5ee}.brief-section h2{font-size:23px}.section-answer{font-size:17px}.html-diagram{padding:18px 14px}.task-chain{grid-template-columns:1fr 1fr}.compare-grid,.role-grid,.note-pair{grid-template-columns:1fr;gap:18px}.note-pair{gap:24px}.diagram-result strong{font-size:18px}.brief-section{margin-top:38px}.flow-node{font-size:16px}.role li{font-size:16px}}