:root{--ink:#183b56;--deep:#071f2d;--teal:#227f80;--muted:#61717b;--light:#f4f6f5;--line:#dce4e6;--paper:#fff;--serif:var(--sans);--sans:'Noto Sans JP','Noto Sans CJK JP','Hiragino Sans','Hiragino Kaku Gothic ProN','Yu Gothic','Meiryo',sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:82px}body{margin:0;color:#263b48;background:var(--paper);font:15px/1.96 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}button,a{font:inherit}a{color:inherit;text-decoration:none}button{cursor:pointer}button:focus-visible,a:focus-visible,.flow-scroller:focus-visible{outline:3px solid #f7a54a;outline-offset:4px}img{max-width:100%}.wrap{max-width:1180px;margin:auto;padding:0 42px}.skip-link{position:fixed;z-index:10000;top:-80px;left:20px;padding:8px 18px;background:white;color:var(--ink)}.skip-link:focus{top:12px}#main section[id]{scroll-margin-top:80px}
/* Header transparent over hero */
.site-header{position:fixed;top:0;left:0;width:100%;height:86px;z-index:300;color:white;transition:background .25s,box-shadow .25s,color .25s;background:linear-gradient(180deg,rgba(1,19,30,.56),rgba(1,19,30,0))}.site-header.scrolled,.site-header.menu-open{background:rgba(255,255,255,.97);box-shadow:0 2px 18px rgba(20,44,60,.09);color:#173b50;backdrop-filter:blur(14px)}.header-inner{max-width:1370px;padding:0 38px;margin:auto;height:100%;display:flex;align-items:center;gap:36px}.logo{display:block;flex:none;font:normal 27px/1.05 var(--sans);letter-spacing:.025em;white-space:nowrap}.logo span{font:500 7px/1.3 var(--sans);letter-spacing:.19em;display:block;margin-top:8px}.desktop-nav{margin-left:auto;display:flex;gap:21px;align-items:center}.desktop-nav a{font-size:11px;font-weight:700;white-space:nowrap;transition:opacity .2s}.desktop-nav a:hover{opacity:.58}.header-contact{white-space:nowrap;background:white;color:#14344b;padding:11px 23px;border-radius:100px;font-size:12px;font-weight:800;line-height:1.4;transition:transform .2s,background .2s}.header-contact:hover{transform:translateY(-2px);background:#eef6f6}.header-contact span{margin-left:9px}.site-header.scrolled .header-contact,.site-header.menu-open .header-contact{background:#123b4d;color:white}.menu-button{color:inherit;display:none;margin-left:auto;width:42px;height:42px;border:0;background:transparent;position:relative;padding:10px}.menu-button span{display:block;width:23px;height:2px;background:currentColor;position:absolute;left:10px;top:14px;transition:transform .2s}.menu-button span:nth-child(2){top:21px}.menu-button span:nth-child(3){top:28px}.menu-open .menu-button span:first-child{transform:translateY(7px) rotate(45deg)}.menu-open .menu-button span:nth-child(2){opacity:0}.menu-open .menu-button span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.mobile-nav{position:absolute;left:0;right:0;top:86px;background:white;color:#183b56;padding:15px 30px 25px;box-shadow:0 20px 25px rgba(0,0,0,.12)}.mobile-nav[hidden]{display:none}.mobile-nav a{display:block;border-bottom:1px solid #e6ecec;padding:10px 0;font-size:14px;font-weight:700}
/* Hero */
.hero{height:min(790px,94svh);min-height:645px;background:#061d2b;position:relative;color:white;overflow:hidden}.hero-photo{position:absolute;inset:0 0 0 auto;width:76%;overflow:hidden;opacity:.9}.hero-photo img{display:block;width:100%;height:100%;object-fit:cover;object-position:68% 45%;filter:brightness(.82) saturate(.82);mask-image:linear-gradient(to right,transparent 0,rgba(0,0,0,.1) 8%,black 42%)}.hero::after{content:'';inset:0;position:absolute;background:linear-gradient(90deg,rgba(3,25,39,.9) 0,rgba(3,25,39,.75) 28%,rgba(5,30,42,.18) 77%,rgba(5,30,42,.07) 100%);pointer-events:none}.hero-grain{position:absolute;inset:0;background:linear-gradient(to top,rgba(0,14,24,.39),transparent 35%);z-index:1}.hero-inner{height:100%;display:flex;align-items:center;position:relative;z-index:2}.hero-copy{max-width:750px;padding-top:66px}.hero-eyebrow{font-size:13px;letter-spacing:.15em;margin:0 0 29px;font-weight:500}.hero h1{font:500 clamp(57px,6.3vw,92px)/1.43 var(--serif);letter-spacing:.065em;color:#fff;margin:0 0 23px;text-shadow:0 3px 18px rgba(0,0,0,.2)}.hero-lead{font-size:17px;letter-spacing:.13em;line-height:1.9;font-weight:700;margin:0 0 15px}.hero-desc{font-size:13px;line-height:2;max-width:460px;color:#edf1f5;margin:0 0 31px}.hero-read{display:inline-flex;gap:16px;align-items:center;justify-content:space-between;min-width:210px;border-radius:99px;background:white;color:#0d314b;font-size:13px;font-weight:800;padding:9px 20px 9px 10px;transition:transform .2s}.hero-read:hover{transform:translateY(-2px)}.circle-arrow{display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:#0d344d;color:white}.hero-edge-copy{position:absolute;right:40px;bottom:70px;text-align:right;font:11px/1.8 var(--sans);letter-spacing:.22em;opacity:.83}.hero-scroll{position:absolute;left:42px;bottom:38px;letter-spacing:.18em;font:10px/1 var(--sans)}.hero-scroll span{display:block;margin-top:14px;font-size:23px;font-weight:200}
/* Editorial chapters */
.chapter{padding:104px 0 114px;background:#fff;border-bottom:1px solid var(--line)}.chapter-layout{display:grid;grid-template-columns:minmax(0, .95fr) minmax(0,1.05fr);gap:7.7%;align-items:start}.chapter-label{display:flex;align-items:flex-start;gap:18px;margin-bottom:27px;white-space:nowrap}.chapter-no{font:400 66px/.95 var(--sans);color:#a6acb2;letter-spacing:-.065em}.chapter-label strong{display:block;font:700 14px/1.3 var(--sans);color:var(--ink);letter-spacing:.13em;margin:7px 0 4px}.chapter-label small{display:block;font:10px/1.6 var(--sans);letter-spacing:.2em;color:#8b98a2}.chapter h2{font:600 clamp(31px,3vw,43px)/1.65 var(--serif);letter-spacing:.025em;color:#142e44;margin:0 0 23px}.section-subtitle{font:700 16px/1.75 var(--serif);color:#233b49;margin:0 0 24px}.prose{color:#4a5b66;font-size:14px;line-height:2.05}.prose p{margin:0 0 18px}.prose strong{color:#1d4358}.prose h3{font:600 clamp(23px,2.3vw,30px)/1.7 var(--serif);color:var(--ink);letter-spacing:.03em;margin:0 0 20px}.overline{color:#318486!important;font:700 11px/1.5 var(--sans)!important;letter-spacing:.18em;margin:0 0 13px!important}.footnote,.muted-small{font-size:11px;color:#7b8a91;line-height:1.85;margin:12px 0 0}.story-divider{border-top:1px solid var(--line);margin:47px 0}.chapter-ending{border-top:1px solid var(--line);margin:68px 0 0;padding:40px 0 0;display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:start}.chapter-ending span{font:600 clamp(21px,2.4vw,31px)/1.7 var(--serif);color:var(--ink)}.chapter-ending p{max-width:520px;color:#5e7079;margin:0;line-height:2}.photo-frame{margin:0;position:relative}.photo-frame img{display:block;width:100%;height:100%;object-fit:cover}.photo-frame figcaption,.future-landscape figcaption{position:absolute;right:10px;bottom:10px;background:rgba(6,26,37,.66);color:white;font-size:10px;line-height:1.5;padding:6px 10px}.challenge-aside{padding-top:65px}.challenge-photos{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.challenge-photos figure{margin:0}.challenge-photos img{width:100%;height:165px;object-fit:cover;display:block}.challenge-photos figcaption{font-size:11px;color:#334b5d;font-weight:700;text-align:center;padding:11px 0 0}.editorial-quote{font:500 21px/1.85 var(--serif);color:#193b50;background:#f4f6f5;padding:26px 34px;margin:34px 0 17px;border:0}.chapter-aside .muted-small{font-size:12px}
/* Developer */
.developer-head{align-items:center}.developer-photo{height:395px;overflow:hidden}.developer-photo img{object-position:center 31%}.developer-body-grid{display:grid;grid-template-columns:1fr 1fr;gap:8%}.story-detail h3{margin-top:0}.bold-statement{font-weight:700;color:#1f5060!important}.timeline-wrap{padding-left:40px;border-left:1px solid #d9e5e6}.timeline-head{font:600 22px/1.65 var(--serif);color:var(--ink);margin:0 0 33px}.timeline{list-style:none;margin:0;padding:0;position:relative}.timeline:before{content:'';position:absolute;left:9px;top:12px;bottom:16px;width:1px;background:#80aeaf}.timeline li{position:relative;display:grid;grid-template-columns:110px 1fr;gap:15px;padding:0 0 26px 30px}.timeline li:before{content:'';position:absolute;left:4.5px;top:8px;width:10px;height:10px;border-radius:50%;background:var(--teal)}.timeline time{font:700 14px/1.6 var(--sans);color:#2a5865}.timeline strong{color:var(--ink);display:block;line-height:1.6;font-size:13px}.timeline p{font-size:12px;line-height:1.8;color:#667986;margin:5px 0 0}
/* Cocreation */
.co-head{grid-template-columns:.91fr 1.09fr}.cocreation-photos .photo-frame{height:300px;overflow:hidden}.cocreation-photos .photo-pair{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:9px}.photo-pair img{display:block;width:100%;height:125px;object-fit:cover}.co-story-grid{margin-top:55px;display:grid;grid-template-columns:1fr 1fr;gap:9%;padding-top:40px;border-top:1px solid var(--line)}.co-story-grid article{max-width:500px}
/* Features */
.short-header{display:grid;grid-template-columns:.88fr 1.12fr;gap:9%;align-items:start;margin-top:-4px;margin-bottom:52px}.short-header .prose{padding-top:10px}.flow-heading{display:flex;align-items:baseline;gap:25px;margin:0 0 12px}.flow-heading span{font:600 17px/1.5 var(--serif);color:var(--ink)}.flow-scroller{overflow-x:auto;-webkit-overflow-scrolling:touch;padding-bottom:6px;scrollbar-width:thin}.workflow{display:flex;width:100%;min-width:900px;gap:1px}.flow-step{height:92px;min-width:0;flex:1;display:grid;place-content:center;text-align:center;padding:8px 16px 8px 23px;line-height:1.65;font-size:15px;font-weight:700;color:white;background:linear-gradient(125deg,#4c9ca3,#236883);clip-path:polygon(0 0,calc(100% - 18px) 0,100% 50%,calc(100% - 18px) 100%,0 100%,18px 50%);margin-left:-13px}.flow-step:first-child{margin-left:0;clip-path:polygon(0 0,calc(100% - 18px) 0,100% 50%,calc(100% - 18px) 100%,0 100%)}.flow-step:nth-child(2n){background:linear-gradient(115deg,#296b88,#207e98)}.flow-step:nth-last-child(-n+2){background:linear-gradient(115deg,#468a92,#569a9f)}.flow-legend{display:flex;align-items:center;justify-content:space-around;gap:6px;margin:4px 0 5px;max-width:1100px;border-bottom:1px solid #d8e6e7;padding-bottom:13px}.flow-legend span{color:#4a7780;font-size:11px;letter-spacing:.13em}.flow-note{margin:9px 0 32px}.screens-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:21px}.screen-card{margin:0;min-width:0}.screen-trigger{position:relative;display:block;width:100%;height:222px;overflow:hidden;background:#eff3f5;border:1px solid #dfe7e9;padding:0;box-shadow:0 6px 22px rgba(13,43,62,.045)}.screen-trigger img{display:block;width:100%;height:100%;object-fit:cover;object-position:top center;transition:transform .3s}.screen-trigger:hover img{transform:scale(1.04)}.screen-zoom{position:absolute;right:0;bottom:0;color:white;background:rgba(12,48,61,.81);font-size:11px;padding:5px 10px;opacity:0;transition:opacity .2s}.screen-trigger:hover .screen-zoom,.screen-trigger:focus-visible .screen-zoom{opacity:1}.screen-card figcaption{padding:12px 3px 0}.screen-card figcaption strong{display:block;color:var(--ink);font-size:14px;line-height:1.5}.screen-card figcaption span{display:block;font-size:12px;color:#75838b;line-height:1.7;margin-top:4px}.screens-notice{font-size:11px;color:#71858f;line-height:1.9;border-top:1px solid #e3e8ea;padding-top:13px;margin:26px 0 0}.simple-story{margin:50px auto;max-width:770px;text-align:center;line-height:2.2;color:#566a75}.simple-story strong{display:block;font:600 23px/1.8 var(--serif);color:var(--ink);margin:14px 0}.technology-note{border-top:1px solid #d9e4e5;border-bottom:1px solid #d9e4e5;padding:33px 0;display:grid;grid-template-columns:.9fr 1.1fr;gap:9%}.technology-note h3{font:600 25px/1.6 var(--serif);color:#183b56;margin:0}.technology-note .prose p{margin-bottom:14px}.technology-note .prose .footnote{font-size:11px;color:#71818a}
/* Value */
.plan-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-bottom:14px}.plan-step{background:#f4f6f5;padding:26px 24px 25px;position:relative;min-height:218px}.plan-step:not(:last-child):after{content:'›';color:#2f8084;position:absolute;right:-18px;top:38%;z-index:3;font-size:30px}.step-number{font:600 10px var(--sans);letter-spacing:.2em;color:#29858d}.plan-step h3{margin:13px 0 0;font:600 23px/1.5 var(--serif);color:var(--ink)}.plan-step strong{font-size:12px;color:#3c6a77}.plan-step p{margin:11px 0 0;font-size:12px;line-height:1.85;color:#657781}.formula{background:#06455a;color:white;border-radius:3px;padding:20px 26px 26px}.formula-caption{font-size:11px;letter-spacing:.13em;margin-bottom:15px;color:#c6e7ec}.formula-row{display:grid;grid-template-columns:1fr auto 1fr auto 1fr auto 1.3fr;gap:17px;align-items:center}.formula-row>div{min-width:0;text-align:center}.formula-row span{display:block;font-size:12px;opacity:.77;margin-bottom:3px}.formula-row strong{display:block;font:600 clamp(20px,2.1vw,30px)/1.4 var(--sans);white-space:nowrap}.formula-row strong small{font:600 12px var(--sans);margin-left:3px}.formula-row>b{font:400 26px var(--serif);opacity:.7}.formula-result strong{font-size:38px;color:#fff}.formula-note{font-size:12px;line-height:2;color:#7b858e;margin:14px 0 30px}.value-gallery{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:22px}.value-gallery .screen-trigger{height:237px}.value-gallery .screen-featured .screen-trigger{height:237px}.value-body{max-width:790px;margin:55px 0}.future-ai{margin:52px 0 0;padding:42px 44px;background:#f4f6f5;display:grid;grid-template-columns:.9fr 1.1fr;gap:7%}.future-ai h3{font:600 clamp(23px,2.1vw,31px)/1.65 var(--serif);margin:0;color:var(--ink)}.future-ai .prose .footnote{color:#687781}.value-ending{margin-top:52px}
/* Future */
.chapter-future{padding-bottom:125px}.future-hero{display:grid;grid-template-columns:46% 54%;align-items:stretch}.future-story{padding-right:30px}.future-landscape{margin:0;height:380px;position:relative;overflow:hidden}.future-landscape img{width:100%;height:100%;object-fit:cover;display:block}.future-body{margin:44px 0 0;max-width:790px}.future-body h3{margin-top:40px}.closing-manifesto{padding-top:40px;margin-top:58px;border-top:1px solid #d9e2e3}.closing-manifesto p{font:600 clamp(28px,3.4vw,45px)/1.5 var(--serif);margin:0;color:#163a50}.closing-manifesto span{display:block;margin-top:12px;color:#538085;font:500 20px/1.6 var(--serif)}
/* Contact and footer */
.contact{background:#073047;color:white;padding:91px 0 103px}.contact-inner{display:grid;grid-template-columns:1.25fr .75fr;gap:13%}.contact .overline{color:#8bd4d1!important}.contact h2{font:500 clamp(32px,3.2vw,45px)/1.6 var(--serif);margin:18px 0 23px}.contact p{font-size:13px;line-height:2.1;color:#d5e6e8;max-width:620px}.contact-info{padding-top:26px}.contact-info>div{margin-bottom:24px;padding-bottom:21px;border-bottom:1px solid rgba(255,255,255,.22)}.contact-info span{display:block;font-size:11px;color:#afd0d9;margin-bottom:7px}.contact-info strong{display:block;font-size:17px;color:white}.contact-todo{font-size:11px!important;opacity:.75}.footer{background:#042534;color:#abc8d3;padding:28px 0}.footer-inner{display:flex;align-items:center;gap:38px}.footer-logo{font:22px var(--sans);color:white}.footer-logo span{display:block;font:10px/2 var(--sans);letter-spacing:.08em;color:#c6d7df}.footer p{font-size:11px;line-height:1.7;margin-left:auto}.footer a{font-size:11px;white-space:nowrap;color:white}.lightbox{position:fixed;inset:0;z-index:900;background:rgba(4,20,30,.93);padding:72px 5vw 36px;display:grid;place-items:center}.lightbox[hidden]{display:none}.lightbox-content{max-width:95vw;max-height:85vh;display:flex;flex-direction:column;gap:12px;align-items:center}.lightbox-content img{display:block;max-width:95vw;max-height:76vh;object-fit:contain;box-shadow:0 5px 45px rgba(0,0,0,.3)}.lightbox-content p{color:white;font-size:12px;margin:0}.lightbox-close{position:absolute;right:26px;top:18px;color:white;font-size:33px;line-height:1;border:0;background:none;padding:8px 12px}
@media(max-width:1170px){.desktop-nav{gap:13px}.desktop-nav a{font-size:10px}.header-inner{gap:17px;padding:0 24px}.logo{font-size:25px}.wrap{padding:0 32px}.hero-scroll{left:32px}.workflow{min-width:900px}}
@media(max-width:970px){.desktop-nav,.header-contact{display:none}.menu-button{display:block}.header-inner{padding:0 26px}.site-header{height:76px}.mobile-nav{top:76px}.hero{min-height:640px}.hero-photo{width:100%;opacity:.75}.hero-photo img{object-position:62% center;mask-image:linear-gradient(to right,transparent 0,rgba(0,0,0,.3) 20%,black 60%)}.hero::after{background:linear-gradient(90deg,rgba(4,25,38,.94),rgba(4,25,38,.66) 53%,rgba(4,25,38,.1))}.hero-copy{max-width:640px}.chapter{padding:82px 0}.chapter-layout{gap:6%}.challenge-photos img{height:110px}.formula-row{gap:9px}.formula-result strong{font-size:29px}}
@media(max-width:700px){html{scroll-padding-top:68px}.wrap{padding:0 22px}.site-header{height:70px}.header-inner{padding:0 21px}.mobile-nav{top:70px}.logo{font-size:22px}.logo span{font-size:6px}.hero{height:760px;min-height:680px;max-height:92svh}.hero-photo{width:100%;opacity:.8}.hero-photo img{object-position:63% center}.hero::after{background:linear-gradient(90deg,rgba(2,20,33,.93),rgba(2,20,33,.61) 75%,rgba(2,20,33,.45))}.hero-inner{align-items:flex-start;padding-top:177px}.hero-copy{padding-top:0}.hero-eyebrow{font-size:10px;letter-spacing:.07em;margin-bottom:24px;line-height:1.7;max-width:300px}.hero h1{font-size:clamp(44px,10.3vw,64px);line-height:1.56;letter-spacing:.03em;margin-bottom:18px}.hero-lead{font-size:13px}.hero-desc{font-size:11px;line-height:1.95;max-width:310px}.hero-edge-copy{display:none}.hero-scroll{left:22px;bottom:28px}.chapter{padding:67px 0 75px}.chapter-layout,.developer-body-grid,.co-story-grid,.short-header,.technology-note,.future-ai,.contact-inner,.chapter-ending{grid-template-columns:1fr;gap:26px}.chapter-label{margin-bottom:20px;gap:13px}.chapter-no{font-size:58px}.chapter-label strong{font-size:12px;margin-top:4px}.chapter h2{font-size:clamp(29px,7vw,36px);line-height:1.58;margin-bottom:16px}.section-subtitle{font-size:14px;margin-bottom:14px}.prose{font-size:13px}.challenge-aside{padding-top:3px}.challenge-photos{gap:6px}.challenge-photos img{height:95px}.challenge-photos figcaption{font-size:10px}.editorial-quote{font-size:17px;padding:20px;margin:25px 0 10px}.developer-photo{height:285px}.developer-head{gap:22px}.developer-body-grid{gap:28px}.timeline-wrap{padding-left:14px}.timeline li{grid-template-columns:93px 1fr;gap:9px;padding-left:23px;padding-bottom:17px}.timeline time{font-size:12px}.timeline strong{font-size:12px}.timeline p{font-size:11px}.chapter-ending{margin-top:39px;padding-top:29px;gap:12px}.chapter-ending span{font-size:21px}.chapter-ending p{font-size:12px}.cocreation-photos .photo-frame{height:220px}.photo-pair img{height:100px}.co-story-grid{margin-top:30px;padding-top:24px}.short-header{margin-bottom:34px}.flow-heading{display:block}.flow-heading span{display:block;font-size:14px;margin-bottom:10px}.flow-scroller{margin-right:-22px;padding-right:22px}.workflow{min-width:760px}.flow-step{height:74px;font-size:12px}.flow-legend{font-size:9px;gap:3px}.flow-legend span{font-size:9px}.screens-grid,.value-gallery{grid-template-columns:1fr;gap:26px}.screen-trigger,.value-gallery .screen-trigger,.value-gallery .screen-featured .screen-trigger{height:230px}.screen-card figcaption{padding-top:8px}.technology-note{padding:26px 0}.technology-note h3{font-size:23px}.plan-steps{grid-template-columns:1fr;gap:8px}.plan-step{min-height:0;padding:18px 20px}.plan-step:not(:last-child):after{content:'⌄';right:50%;top:auto;bottom:-24px;font-size:22px}.plan-step h3{font-size:19px;display:inline-block;margin:6px 8px 0 0}.plan-step p{margin:4px 0 0}.formula{padding:18px 15px 20px}.formula-row{grid-template-columns:1fr auto 1fr;gap:12px 6px}.formula-row>div{padding:3px 0}.formula-row>b{font-size:19px}.formula-row>div:nth-of-type(3){grid-column:1}.formula-row>b:nth-of-type(3){grid-column:2}.formula-result{grid-column:3}.formula-row strong{font-size:21px}.formula-result strong{font-size:25px}.formula-row span{font-size:10px}.formula-row strong small{display:block;font-size:10px;margin:0}.future-ai{padding:26px 22px;gap:14px}.future-ai h3{font-size:24px}.future-hero{display:flex;flex-direction:column;gap:20px}.future-landscape{height:220px}.future-body{margin-top:33px}.closing-manifesto{margin-top:40px}.closing-manifesto p{font-size:29px}.closing-manifesto span{font-size:16px}.contact{padding:66px 0 76px}.contact h2{font-size:30px}.contact-info{padding-top:8px}.footer-inner{flex-wrap:wrap;gap:12px 20px}.footer p{order:3;width:100%;margin:0}.footer a{margin-left:auto}.future-body h3{font-size:22px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}
/* Editorial typography refinements for long Japanese headings */
@media(min-width:701px){.chapter-challenge h2,.chapter-features h2{font-size:clamp(31px,2.5vw,36px)}.hero-scroll{bottom:10px}}
@media(min-width:971px){.chapter-features h2{font-size:31px}}
.formula-math{color:#e6f7f8;text-align:center;font:500 13px/1.7 var(--sans);letter-spacing:.08em;margin:18px 0 0}

.mobile-formula{display:none}
@media(max-width:700px){.plan-step .step-number{display:block}.plan-step h3{display:block;margin:6px 0 0}.plan-step strong{display:block;margin:0 0 4px}.formula-row,.formula-math{display:none}.mobile-formula{display:flex;flex-direction:column;gap:9px;align-items:center;text-align:center;padding:12px 0 0}.mobile-formula span{font-size:12px;color:#d5edf1}.mobile-formula strong{font:600 30px/1.4 var(--sans);color:#fff}.mobile-formula strong small{font:600 13px var(--sans);margin-left:5px}}

/* v1.1: Unified typography to align with Linarq's calm, contemporary corporate identity.
   The site's exact computed font could not be independently confirmed; Noto Sans JP
   is the intended cross-platform primary family, with Japanese system fallbacks. */
.hero h1{font-weight:700;letter-spacing:.02em;line-height:1.40}
.chapter h2{font-weight:700;letter-spacing:.005em}
.prose h3,.timeline-head,.chapter-ending span,.section-subtitle{font-weight:700;letter-spacing:.005em}
.chapter-no{font-weight:300;letter-spacing:-.06em}
.logo,.footer-logo{font-weight:700;letter-spacing:.025em}
@media(max-width:700px){.hero h1{letter-spacing:.01em;line-height:1.45}}


/* v1.2: Readable long-form typography. Linarq.net editorial rhythm inspired this
   sizing; the exact CSS sizes on linarq.net could not be independently verified. */
body {font-size:17px;line-height:1.90}
.prose {font-size:17px;line-height:1.93;letter-spacing:.008em}
.prose p {margin-bottom:1.32em}
.section-subtitle {font-size:18px;line-height:1.82}
.prose h3 {font-size:clamp(26px,2.4vw,31px);line-height:1.58}
.chapter-ending p {font-size:16px;line-height:1.96}
.simple-story {font-size:17px;line-height:1.92}
.timeline time {font-size:15px}
.timeline strong {font-size:15px;line-height:1.6}
.timeline p {font-size:14px;line-height:1.82}
.timeline li {padding-bottom:30px}
.plan-step p {font-size:15px;line-height:1.83}
.plan-step strong {font-size:15px}
.screen-card figcaption strong {font-size:16px}
.screen-card figcaption span {font-size:14px;line-height:1.75}
.footnote,.muted-small,.screens-notice {font-size:13px;line-height:1.85}
.formula-note {font-size:14px;line-height:1.85}
.contact p {font-size:16px;line-height:1.93}
.contact-todo {font-size:13px!important}
.hero-desc {font-size:15px;line-height:1.95}
.challenge-photos figcaption {font-size:13px;line-height:1.6}
.editorial-quote {font-size:23px;line-height:1.68}
.flow-legend,.flow-legend span {font-size:12px}
.chapter .overline {font-size:12px!important}

@media (max-width:970px) and (min-width:701px) {
  .chapter-layout {gap:5%}
  .section-subtitle {font-size:17px}
}
@media (max-width:700px) {
  body {font-size:16px;line-height:1.88}
  .prose {font-size:16px;line-height:1.91;letter-spacing:0}
  .prose p {margin-bottom:1.22em}
  .section-subtitle {font-size:17px;line-height:1.7;margin-bottom:18px}
  .prose h3 {font-size:24px;line-height:1.55}
  .chapter-ending p {font-size:16px;line-height:1.88}
  .simple-story {font-size:16px;line-height:1.9}
  .timeline time {font-size:13px}
  .timeline strong {font-size:14px}
  .timeline p {font-size:13px;line-height:1.8}
  .plan-step p {font-size:15px;line-height:1.77}
  .plan-step strong {font-size:15px}
  .screen-card figcaption strong {font-size:16px}
  .screen-card figcaption span {font-size:14px}
  .footnote,.muted-small,.screens-notice {font-size:12px;line-height:1.82}
  .formula-note {font-size:13px;line-height:1.82}
  .contact p {font-size:16px;line-height:1.90}
  .hero-desc {font-size:14px;line-height:1.90;max-width:320px}
  .challenge-photos figcaption {font-size:11px}
  .editorial-quote {font-size:19px;line-height:1.65}
  .flow-legend,.flow-legend span {font-size:11px}
  .chapter .overline {font-size:11px!important}
}


/* v1.3: Scale all editorial hierarchy around the 17px/16px reading type.
   The chosen visual direction, photos, section backgrounds, workflows and diagrams
   are unchanged. Larger bilingual chapter labels are the main correction. */
:root { --reading-pc:17px; --reading-mobile:16px; }

/* Primary navigation: readable without competing with hero. */
.desktop-nav a {font-size:12.5px;letter-spacing:.015em}
.header-contact {font-size:13px}
.hero-eyebrow {font-size:14px;line-height:1.7}
.hero-lead {font-size:18px}
.hero-desc {font-size:16px;line-height:1.88}
.hero-read {font-size:14px}

/* Chapter index: visually join number, Japanese name, and English label. */
.chapter-label {align-items:center;gap:21px;margin-bottom:31px}
.chapter-no {font-size:70px;line-height:1;letter-spacing:-.065em}
.chapter-label>span:last-child {display:flex;flex-direction:column;justify-content:center;min-width:0}
.chapter-label strong {font-size:20px;line-height:1.42;font-weight:700;letter-spacing:.055em;margin:0 0 5px}
.chapter-label small {font-size:14px;line-height:1.38;font-weight:600;letter-spacing:.12em;color:#70818b}

/* Proportions and secondary headings, based on body typography. */
.chapter h2 {line-height:1.57}
.section-subtitle {font-size:20px;line-height:1.75;margin-bottom:25px}
.prose h3 {font-size:clamp(26px,2.4vw,31px)}
.overline {font-size:13px!important;letter-spacing:.1em}
.chapter .overline {font-size:13px!important}
.timeline-head {font-size:24px}
.timeline time {font-size:16px}
.timeline strong {font-size:16px}
.timeline p {font-size:14px}
.simple-story strong {font-size:25px}
.challenge-photos figcaption {font-size:14px;line-height:1.6}
.flow-heading span {font-size:19px}
.flow-legend,.flow-legend span {font-size:13px}
.flow-step {font-size:15px}
.screen-card figcaption {padding-top:16px}
.screen-card figcaption strong {font-size:17px}
.screen-card figcaption span {font-size:15px}
.screen-zoom {font-size:12px}
.footnote,.muted-small,.screens-notice {font-size:13px}
.photo-frame figcaption,.future-landscape figcaption {font-size:12px}
.technology-note h3 {font-size:27px}
.technology-note .prose .footnote {font-size:13px}
.plan-step .step-number {font-size:13px}
.plan-step h3 {font-size:24px}
.plan-step strong {font-size:16px}
.plan-step p {font-size:16px;line-height:1.75}
.formula-caption {font-size:13px}
.formula-row span {font-size:13px}
.formula-math {font-size:15px}
.formula-note {font-size:14px}
.chapter-ending p {font-size:17px}
.contact p {font-size:17px}
.footer p,.footer a {font-size:12px}

@media (max-width:1170px) and (min-width:971px) {
  .desktop-nav a {font-size:11.5px}
  .desktop-nav {gap:10px}
  .header-inner {gap:16px}
}
@media (max-width:970px) and (min-width:701px) {
  .chapter-label strong {font-size:19px}
  .chapter-label small {font-size:13px}
  .section-subtitle {font-size:19px}
  .timeline time,.timeline strong {font-size:15px}
}
@media (max-width:700px) {
  .hero-eyebrow {font-size:12px;line-height:1.7}
  .hero-lead {font-size:15px;line-height:1.7}
  .hero-desc {font-size:15px;line-height:1.85}
  .hero-read {font-size:13px}
  .chapter-label {align-items:center;gap:15px;margin-bottom:24px}
  .chapter-no {font-size:60px;line-height:1}
  .chapter-label strong {font-size:18px;line-height:1.4;margin:0 0 4px;letter-spacing:.035em}
  .chapter-label small {font-size:13px;line-height:1.4;letter-spacing:.08em}
  .chapter h2 {font-size:clamp(29px,7.25vw,36px);line-height:1.58}
  .section-subtitle {font-size:18px;line-height:1.7;margin-bottom:20px}
  .overline,.chapter .overline {font-size:12px!important}
  .timeline-head {font-size:22px}
  .timeline time {font-size:14px}
  .timeline strong {font-size:15px}
  .timeline p {font-size:14px;line-height:1.8}
  .timeline li {grid-template-columns:91px 1fr;gap:9px;padding-left:23px}
  .chapter-ending p {font-size:16px}
  .challenge-photos figcaption {font-size:12px}
  .flow-heading span {font-size:16px}
  .flow-legend,.flow-legend span {font-size:12px}
  .flow-step {font-size:12px}
  .screen-card figcaption strong {font-size:17px}
  .screen-card figcaption span {font-size:15px}
  .footnote,.muted-small,.screens-notice {font-size:13px}
  .technology-note h3 {font-size:24px}
  .technology-note .prose .footnote {font-size:13px}
  .plan-step .step-number {font-size:12px}
  .plan-step h3 {font-size:21px}
  .plan-step strong {font-size:16px}
  .plan-step p {font-size:15px}
  .formula-caption {font-size:12px}
  .formula-note {font-size:13px}
  .contact p {font-size:16px}
  .photo-frame figcaption,.future-landscape figcaption {font-size:11px}
}

/* v1.4: contact paths added without changing the approved editorial typography */
.contact-actions{display:flex;flex-direction:column;align-items:stretch;gap:11px;margin:22px 0 15px}
.contact-actions a{min-height:47px;border-radius:100px;padding:13px 20px;display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:15px;font-weight:700;line-height:1.35;transition:transform .15s,background .15s}
.contact-actions a:hover{transform:translateY(-2px)}
.contact-actions .contact-action-primary{background:#fff;color:#0e4054}
.contact-actions a:focus-visible{outline:3px solid #e5b368;outline-offset:3px}
.contact-todo{font-size:12px!important;line-height:1.8}
@media(max-width:700px){.contact-actions a{font-size:15px;min-height:51px}.contact-todo{font-size:13px!important}}

/* v1.5 - supplied real developer portrait */
.developer-photo img{object-position:46% 40%;}
@media(max-width:700px){.developer-photo img{object-position:46% 30%;}}

/* v1.6: documentary image arrangement for the Fujii Printing story */
.cocreation-photos .photo-frame img{object-position:42% 42%}
.cocreation-photos .photo-pair img{object-position:center 48%}
.co-photo-note{margin:10px 0 0;font-size:12px;line-height:1.7;color:#70818c}
@media(max-width:700px){.co-photo-note{font-size:11px}}

/* Ver.1.9: VI / Future — selected Nagano panorama and full-width editorial layout. */
.chapter-future .future-hero{display:flex;flex-direction:column;gap:25px;}
.chapter-future .future-story{padding-right:0;max-width:920px;}
.chapter-future .future-story h2{margin-bottom:17px;}
.chapter-future .future-intro{margin-top:18px;max-width:840px;}
.chapter-future .future-landscape{height:auto;aspect-ratio:1.9;overflow:visible;margin:0;}
.chapter-future .future-landscape img{width:100%;height:100%;object-fit:cover;object-position:50% 48%;aspect-ratio:1.9;display:block;}
.chapter-future .future-landscape figcaption{position:static!important;background:transparent!important;color:#687982!important;font-size:13px!important;line-height:1.8;padding:9px 0 0!important;text-align:left;}
.chapter-future .future-body{margin:48px 0 0;max-width:900px;}
@media(max-width:700px){
 .chapter-future .future-hero{gap:21px;}
 .chapter-future .future-intro{margin-top:16px;}
 .chapter-future .future-landscape{aspect-ratio:auto;}
 .chapter-future .future-landscape img{aspect-ratio:1.68;object-position:50% 50%;}
 .chapter-future .future-landscape figcaption{font-size:12px!important;}
 .chapter-future .future-body{margin-top:40px;}
}

/* Ver.1.9.3: chronology lead-in. */
.timeline-wrap .timeline-head{margin-bottom:16px}.timeline-context{font-size:17px;line-height:1.9;color:#566a75;margin:0 0 24px}@media(max-width:700px){.timeline-context{font-size:16px;line-height:1.85;margin-bottom:20px}}
/* Return navigation between the standalone story and the corporate site. */
.header-inner{gap:22px}
.desktop-nav{gap:16px}
.header-product-link{flex:none;white-space:nowrap;font-size:11px;font-weight:700;line-height:1.5;padding:10px 0;border-bottom:1px solid currentColor}
.header-product-link span{margin-left:5px}
.header-product-link:hover{opacity:.72}
.mobile-nav{max-height:calc(100dvh - 86px);overflow-y:auto;overscroll-behavior:contain}
.mobile-nav .mobile-product-link{margin-top:12px;border-top:1px solid #cbd9dd;padding-top:18px;color:#176e70}
.mobile-nav .mobile-home-link{font-weight:500}
.story-product-entry{padding:56px 0;background:#f4f7f7;border-top:1px solid var(--line)}
.story-product-inner{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:30px}
.story-product-entry h2{margin:0 0 12px;color:var(--ink);font:600 clamp(23px,2.4vw,31px)/1.6 var(--sans)}
.story-product-entry p:not(.overline){margin:0;color:#4a5b66;font-size:13px;line-height:1.9}
.story-product-link{display:inline-flex;align-items:center;gap:14px;max-width:100%;padding:14px 0;border-bottom:1px solid #227f80;color:var(--ink);font-size:14px;font-weight:700;line-height:1.8}
.story-product-link span:first-child{min-width:0}
.story-product-link span:last-child{flex:none}
.story-product-link:hover{color:#176e70}
.footer-inner{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:20px 32px;align-items:center}
.footer-links{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:10px 22px}
.footer-links a{font-size:12px;line-height:1.8;padding:4px 0}
.footer-links a:hover{text-decoration:underline;text-underline-offset:4px}
.footer .footer-copyright{grid-column:1 / -1;margin:0;padding-top:16px;border-top:1px solid rgba(171,200,211,.22)}
@media(max-width:1180px){.desktop-nav,.header-product-link,.header-contact{display:none}.menu-button{display:block}}
@media(max-width:970px){.mobile-nav{max-height:calc(100dvh - 76px)}.story-product-inner{grid-template-columns:1fr;gap:18px}.story-product-link{justify-self:start}}
@media(max-width:700px){.mobile-nav{max-height:calc(100dvh - 70px)}.story-product-entry{padding:40px 0}.story-product-link{font-size:13px}.footer-inner{grid-template-columns:1fr;gap:18px}.footer-links{justify-content:flex-start;gap:8px 20px}.footer .footer-copyright{grid-column:auto}}