:root{--ink:#07131d;--navy:#091b2a;--blue:#188bc2;--cyan:#51c8df;--green:#84c868;--paper:#f4f7f8;--white:#fff;--muted:#60707b;--line:#dce4e8;--max:1240px;--pad:clamp(22px,5vw,72px)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--white);font-family:"Helvetica Neue",Arial,"Noto Sans JP",sans-serif;line-height:1.65}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button{font:inherit}body.menu-open{overflow:hidden}
.header{position:fixed;z-index:20;inset:0 0 auto;background:rgba(5,18,28,.72);backdrop-filter:blur(16px);border-bottom:1px solid rgba(255,255,255,.12);color:white}.nav{height:82px;max-width:var(--max);padding:0 var(--pad);margin:auto;display:flex;align-items:center;gap:34px}.logo{width:154px}.logo img{width:100%;height:auto}.navlinks{margin-left:auto;display:flex;align-items:center;gap:28px;font-size:13px;letter-spacing:.12em}.navlinks a{opacity:.78}.navlinks a:hover{opacity:1}.nav-cta{border:1px solid rgba(255,255,255,.7);padding:11px 18px;opacity:1!important}.lang{display:flex;gap:7px;align-items:center;font-size:12px}.lang button{background:none;border:0;color:white;padding:3px;cursor:pointer;opacity:.45}.lang button.active{opacity:1;border-bottom:1px solid currentColor}.menu{display:none;margin-left:auto;background:none;border:0;color:white;font-size:24px}
.hero{min-height:100svh;position:relative;display:grid;align-items:end;color:white;background:#061521 url('../assets/vision-applications-v4.png') center/cover no-repeat;isolation:isolate}.hero:after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(3,13,22,.96) 0%,rgba(3,13,22,.78) 34%,rgba(3,13,22,.12) 70%),linear-gradient(0deg,rgba(3,13,22,.8),transparent 45%)}.hero-inner{width:100%;max-width:var(--max);margin:auto;padding:190px var(--pad) 90px}.eyebrow{font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--cyan);margin:0 0 24px}.hero h1{font-size:clamp(50px,7.2vw,104px);font-weight:500;line-height:1.02;letter-spacing:-.045em;max-width:920px;margin:0}.hero-lead{font-size:clamp(18px,2vw,26px);font-weight:500;margin:32px 0 10px}.hero-copy{max-width:570px;color:#d6e0e5;font-size:16px}.scroll{position:absolute;right:var(--pad);bottom:40px;writing-mode:vertical-rl;font-size:10px;letter-spacing:.18em;opacity:.68}.scroll:after{content:"";display:inline-block;height:54px;border-left:1px solid currentColor;margin-top:12px}
.section{padding:clamp(90px,12vw,170px) var(--pad)}.wrap{max-width:var(--max);margin:auto}.kicker{font-size:12px;letter-spacing:.2em;color:#2487ae;margin-bottom:30px}.display{font-size:clamp(38px,5.6vw,76px);line-height:1.08;letter-spacing:-.035em;font-weight:500;margin:0}.lead{font-size:clamp(18px,2vw,25px);line-height:1.7}.muted{color:var(--muted)}
.challenge{background:var(--paper)}.challenge-grid{display:grid;grid-template-columns:1.1fr .75fr;gap:10vw;align-items:end}.challenge .body{max-width:480px}.module-strip{margin-top:90px;display:grid;grid-template-columns:repeat(7,1fr);height:160px;gap:7px;align-items:end}.module{background:linear-gradient(160deg,#263641,#111d25);border-radius:4px 4px 2px 2px;position:relative;box-shadow:inset 0 0 0 1px #43515a}.module:before{content:"";position:absolute;top:-6px;left:22%;right:22%;height:7px;background:#677780;border-radius:2px}.module:nth-child(1){height:95%;opacity:.95}.module:nth-child(2){height:72%;opacity:.82}.module:nth-child(3){height:88%}.module:nth-child(4){height:60%;opacity:.72}.module:nth-child(5){height:78%;opacity:.86}.module:nth-child(6){height:98%}.module:nth-child(7){height:68%;opacity:.76}.module-strip.unified .module{height:88%;opacity:1;background:linear-gradient(160deg,#1f95c2,#195989)}
.solution{background:#071722;color:white;overflow:hidden}.solution-head{display:grid;grid-template-columns:1fr .65fr;gap:8vw;align-items:end}.solution .muted{color:#9eb1bc}.steps{margin-top:92px;border-top:1px solid #2a3c47;display:grid;grid-template-columns:repeat(3,1fr)}.step{padding:42px 40px 30px 0;border-right:1px solid #2a3c47;min-height:250px}.step+.step{padding-left:40px}.step:last-child{border-right:0}.num{font-size:12px;color:var(--cyan);letter-spacing:.15em}.step h3{font-size:26px;font-weight:500;margin:52px 0 12px}.step p{color:#9eb1bc;margin:0;max-width:270px}.battery-os{margin-top:70px;padding:28px 0;border-top:1px solid #2a3c47;display:flex;align-items:center;justify-content:space-between;gap:28px}.battery-os strong{font-size:clamp(24px,3vw,40px);font-weight:500}.pulse{width:min(48%,430px);height:2px;background:linear-gradient(90deg,var(--green),var(--cyan),transparent);box-shadow:0 0 18px var(--cyan)}
.vision{min-height:80vh;display:grid;align-items:center;background:linear-gradient(90deg,rgba(3,16,26,.92),rgba(3,16,26,.48)),url('../assets/vision-applications-v4.png') center 40%/cover no-repeat;color:white}.vision .wrap{width:100%}.vision-copy{max-width:760px}.vision .lead{max-width:660px;color:#d8e1e6}
.news{background:white}.news-row{margin-top:55px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:34px 0;display:grid;grid-template-columns:140px 1fr auto;gap:35px;align-items:center}.news-date{font-size:13px;color:var(--muted)}.news-title{font-size:18px}.arrow{font-size:22px;color:var(--blue)}
.careers-cta{background:#eaf2f5}.careers-cta .wrap{display:grid;grid-template-columns:1fr auto;gap:50px;align-items:end}.btn{display:inline-flex;align-items:center;justify-content:center;background:var(--ink);color:white;padding:17px 26px;min-width:220px;font-size:13px;letter-spacing:.1em}.btn.light{background:white;color:var(--ink)}
.footer{background:#05121c;color:white;padding:65px var(--pad) 34px}.footer .wrap{display:grid;grid-template-columns:1fr auto;gap:50px}.footer-logo{width:150px}.footer-meta{color:#8fa2ae;font-size:13px;margin-top:25px}.footer-links{display:flex;gap:28px;font-size:13px}.copyright{grid-column:1/-1;border-top:1px solid #25343d;padding-top:22px;margin-top:50px;color:#78909c;font-size:11px}
.page-hero{padding:185px var(--pad) 100px;background:#071722;color:white}.page-hero .wrap{display:grid;grid-template-columns:1fr .62fr;gap:7vw;align-items:end}.page-hero p{color:#b6c6cf}.jobs{padding:90px var(--pad) 140px}.job-card{border-top:1px solid var(--line);padding:38px 0;display:grid;grid-template-columns:1fr 1fr auto;gap:40px;align-items:center}.job-card h2{font-size:28px;margin:5px 0}.tags{color:var(--muted);font-size:14px}.job-meta{font-size:14px}.job-detail{padding:130px var(--pad)}.job-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:9vw}.job-side{position:sticky;top:120px;align-self:start}.job-section{padding:0 0 46px;margin-bottom:46px;border-bottom:1px solid var(--line)}.job-section h2{font-size:22px}.job-section li{margin:10px 0}.contact-panel{padding:90px var(--pad);background:#eaf2f5}.contact-form{max-width:760px;margin-top:42px;display:grid;grid-template-columns:1fr 1fr;gap:18px}.contact-form label{font-size:13px}.contact-form input,.contact-form textarea{display:block;width:100%;border:1px solid #becbd1;background:white;padding:15px;margin-top:7px;font:inherit}.contact-form .full{grid-column:1/-1}.contact-form textarea{min-height:140px}.contact-form button{border:0;cursor:pointer}.form-note{font-size:12px;color:var(--muted)}
[data-lang]{display:none}html[lang="ja"] [data-lang="ja"],html[lang="en"] [data-lang="en"]{display:initial}html[lang="ja"] div[data-lang="ja"],html[lang="en"] div[data-lang="en"]{display:block}
@media(max-width:780px){.nav{height:68px}.logo{width:126px}.navlinks{position:fixed;inset:68px 0 0;background:#071722;display:none;flex-direction:column;align-items:flex-start;padding:50px var(--pad);font-size:17px}.menu-open .navlinks{display:flex}.menu{display:block}.hero-inner{padding-top:150px}.hero h1{font-size:49px}.scroll{display:none}.challenge-grid,.solution-head,.page-hero .wrap,.job-layout{grid-template-columns:1fr}.module-strip{margin-top:55px;height:105px}.steps{grid-template-columns:1fr}.step,.step+.step{padding:35px 0;border-right:0;border-bottom:1px solid #2a3c47;min-height:0}.step h3{margin-top:25px}.careers-cta .wrap,.footer .wrap,.news-row,.job-card{grid-template-columns:1fr}.news-row{gap:12px}.contact-form{grid-template-columns:1fr}.contact-form .full{grid-column:auto}.job-side{position:static}.footer-links{flex-wrap:wrap}.page-hero{padding-top:145px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* v2 — more balanced typography and infrastructure-led imagery */
body{font-size:17px}
.navlinks{font-size:14px;letter-spacing:.09em}
.lang{font-size:14px}
.hero{background-image:url('../assets/vision-applications-v4.png')}
.hero:after{background:linear-gradient(90deg,rgba(3,13,22,.97) 0%,rgba(3,13,22,.76) 39%,rgba(3,13,22,.08) 69%),linear-gradient(0deg,rgba(3,13,22,.62),transparent 52%)}
.hero h1{font-size:clamp(44px,6vw,82px);max-width:760px;line-height:1.08}
.hero-copy{font-size:18px;line-height:1.8;max-width:620px}
.hero-lead{font-size:clamp(20px,1.8vw,25px)}
.eyebrow,.kicker{font-size:14px;letter-spacing:.15em}
.display{font-size:clamp(36px,4.6vw,64px);line-height:1.15}
.lead{font-size:clamp(19px,1.7vw,23px)}
.muted,.step p{font-size:16px;line-height:1.8}
.num,.news-date,.job-meta,.tags,.contact-form label,.footer-links{font-size:14px}
.news-title{font-size:19px}
.footer-meta{font-size:14px}
.copyright,.form-note{font-size:12px}
.scroll{font-size:13px}
.vision{background-image:linear-gradient(90deg,rgba(3,16,26,.94),rgba(3,16,26,.28)),url('../assets/vision-applications-v4.png');background-position:center;background-size:cover}
.vision-copy{max-width:680px}
@media(max-width:780px){.hero{background-position:58% center}.hero h1{font-size:42px}.hero-copy{font-size:17px}.display{font-size:36px}.eyebrow,.kicker{font-size:13px}.vision{background-position:58% center}.navlinks{font-size:17px}}

/* v3 — battery-first story with conceptual product and vision art */
.hero{background:#071722;background-image:radial-gradient(circle at 80% 42%,rgba(24,139,194,.22),transparent 34%),linear-gradient(135deg,#071722 0%,#0b2333 72%,#0c3041 100%)}
.hero:after{background:linear-gradient(90deg,rgba(3,13,22,.2),transparent 68%)}
.tech-visual{position:relative;margin:76px 0 22px;background:#f5f9fb;border:1px solid #dce8ed;overflow:hidden;min-height:460px}
.tech-visual img{width:100%;height:auto;object-fit:cover}
.tech-legend{position:absolute;z-index:2;left:32px;top:32px;display:grid;gap:12px}
.tech-legend span{display:grid;background:rgba(7,23,34,.92);padding:14px 18px;min-width:220px;border-left:3px solid var(--cyan)}
.tech-legend b{font-size:14px;font-weight:500;letter-spacing:.08em;color:white}
.tech-legend small{font-size:14px;color:#a9c3cf;margin-top:2px}
.vision{min-height:auto;background:#eef6fa;color:var(--ink)}
.vision .wrap{display:grid;grid-template-columns:.72fr 1.28fr;gap:6vw;align-items:center;max-width:var(--max)}
.vision .lead{color:#244452}
.vision-art{width:100%;border:1px solid #d5e5ec;background:white}
@media(max-width:780px){.tech-visual{margin-top:48px;min-height:0}.tech-legend{position:static;padding:18px;background:#071722;grid-template-columns:1fr 1fr}.tech-legend span{min-width:0;padding:10px 12px}.vision .wrap{grid-template-columns:1fr}.vision-art{margin-top:24px}}

/* v4 — borderless illustration surfaces */
.hero{background:#071722;overflow:hidden}
.hero:before{content:"";position:absolute;z-index:-2;inset:0 0 0 42%;background:url('../assets/vision-applications-v4.png') left center/200% 100% no-repeat;opacity:.9}
.hero:after{z-index:-1;background:linear-gradient(90deg,#071722 0%,#071722 38%,rgba(7,23,34,.9) 48%,rgba(7,23,34,.18) 78%,rgba(7,23,34,.04) 100%)}
.solution{background:#f7fafb;color:var(--ink)}
.solution .muted,.step p{color:#5b6d77}
.steps{border-color:#d8e4e9}
.step{border-color:#d8e4e9}
.tech-visual{background:transparent;border:0;overflow:visible;margin-left:-3vw;margin-right:-3vw}
.tech-visual img{mix-blend-mode:multiply}
.tech-legend span{background:rgba(7,23,34,.94)}
.vision{min-height:82vh;background-color:#eef6fa;background-image:linear-gradient(90deg,#eef6fa 0%,rgba(238,246,250,.98) 31%,rgba(238,246,250,.72) 47%,rgba(238,246,250,.05) 73%),url('../assets/vision-applications-v4.png');background-position:center;background-size:cover;background-repeat:no-repeat}
.vision .wrap{display:block}
.vision-copy{max-width:570px}
.vision-art{display:none}
.footer-meta{margin-top:22px}
@media(max-width:780px){.hero:before{inset:0;opacity:.34;background-size:cover;background-position:35% center}.hero:after{background:linear-gradient(90deg,rgba(7,23,34,.98),rgba(7,23,34,.74))}.tech-visual{margin-left:0;margin-right:0}.vision{min-height:auto;background-image:linear-gradient(0deg,rgba(238,246,250,.94),rgba(238,246,250,.64)),url('../assets/vision-applications-v4.png');background-position:center;background-size:cover}.vision-copy{max-width:none}}

/* v5 — diagram annotations and full-width vision panorama */
.tech-legend{left:3vw;top:32%;gap:48px}
.tech-legend span{position:relative;background:transparent;border:0;padding:0;min-width:250px}
.tech-legend span:after{content:"";position:absolute;left:0;top:calc(100% + 9px);width:150px;height:1px;background:linear-gradient(90deg,var(--blue),rgba(24,139,194,0))}
.tech-legend b{font-size:15px;color:#147cab;letter-spacing:.12em}
.tech-legend small{font-size:15px;color:#435a66;margin-top:4px}
.vision{min-height:clamp(620px,43vw,820px);background-size:100% auto;background-position:center center}
@media(max-width:780px){.tech-legend{position:static;padding:18px 0;background:transparent;gap:18px}.tech-legend span{padding:0;min-width:0}.tech-legend span:after{width:80px}.vision{min-height:auto;background-size:cover;background-position:center}}

/* v6 — exact physical/digital mapping annotations */
.tech-legend{inset:0;display:block;pointer-events:none}
.tech-legend span{position:absolute;left:3vw}
.tech-legend span:first-child{top:25%}
.tech-legend span:last-child{top:64%}
.tech-legend span:first-child:after{width:360px;transform:rotate(-7deg);transform-origin:left center}
.tech-legend span:last-child:after{width:390px;transform:rotate(6deg);transform-origin:left center}
.tech-legend span:before{content:"";position:absolute;left:0;top:calc(100% + 6px);width:5px;height:5px;border-radius:50%;background:var(--blue)}
@media(max-width:780px){.tech-legend{position:static;display:grid;grid-template-columns:1fr 1fr;gap:18px}.tech-legend span{position:relative;left:auto;top:auto!important}.tech-legend span:first-child:after,.tech-legend span:last-child:after{width:80px;transform:none}}

/* v7 — corrected module layout and precise annotation targets */
.tech-legend span:first-child:after,
.tech-legend span:last-child:after{
  height:7px;
  top:calc(100% + 6px);
  background:
    radial-gradient(circle at right center,var(--blue) 0 3px,transparent 3.5px),
    linear-gradient(transparent 3px,rgba(24,139,194,.52) 3px 4px,transparent 4px);
}
.tech-legend span:first-child:after{width:clamp(300px,28vw,420px);transform:rotate(-9deg)}
.tech-legend span:last-child{top:64%}
.tech-legend span:last-child:after{width:clamp(260px,25vw,350px);transform:rotate(-18deg)}
.tech-legend span:before{display:none}
@media(max-width:780px){
  .tech-legend span:first-child:after,.tech-legend span:last-child:after{
    width:80px;height:7px;transform:none;
  }
}

/* v8 — annotation labels without connector lines */
.tech-legend span:before,.tech-legend span:after{content:none;display:none}

/* Production usability */
[hidden]{display:none!important}
.skip-link{position:fixed;top:-100px;left:16px;z-index:100;background:white;color:#07131d;padding:12px}.skip-link:focus{top:12px}
a:focus-visible,button:focus-visible{outline:3px solid #188bc2;outline-offset:5px}
section[id]{scroll-margin-top:90px}
.contact-actions{margin-top:36px;display:flex;gap:18px;flex-wrap:wrap}
html[lang] ul[data-lang]{display:none}html[lang='ja'] ul[data-lang='ja'],html[lang='en'] ul[data-lang='en']{display:block}
@media(max-width:780px){.navlinks{overflow:auto;max-height:calc(100dvh - 68px)}.display{overflow-wrap:anywhere}.page-hero .wrap{gap:24px}.hero h1{font-size:clamp(34px,10vw,42px)}.tech-legend{padding-top:0}.footer-links{font-size:14px}}