:root{--bg:#000;--fg:#f7f7f7;--muted:#bdbdbd;--line:#343434;--blue:#1689f5;--sans:'Noto Sans JP',sans-serif;--serif:'Noto Serif JP',serif;--container:min(1200px,calc(100% - 80px))}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--sans);font-size:15px;line-height:1.8;letter-spacing:.06em}body.menu-open{overflow:hidden}img{max-width:100%;display:block}a{color:inherit;text-decoration:none}.skip-link{position:fixed;z-index:1000;left:10px;top:-60px;background:#fff;color:#000;padding:8px 16px;transition:top .2s}.skip-link:focus{top:10px}.site-header{height:92px;padding:14px max(28px,calc((100% - 1440px)/2 + 28px));position:fixed;top:0;left:0;width:100%;z-index:20;display:flex;align-items:center;justify-content:space-between;transition:background .3s}.site-header.is-scrolled{background:rgba(0,0,0,.92);backdrop-filter:blur(8px);border-bottom:1px solid #181818}.brand{width:148px;line-height:1}.brand img{width:92px;height:92px;object-fit:contain;object-position:left center;transform:scale(1.65);transform-origin:left center}.site-nav{display:flex;align-items:center;gap:42px;font-size:13px;font-weight:500;letter-spacing:.1em}.site-nav a{transition:color .2s}.site-nav a:hover,.site-nav a:focus-visible{color:var(--blue)}.nav-contact{border:1px solid #aaa;padding:9px 26px!important}.nav-contact:hover,.nav-contact:focus-visible{border-color:var(--blue)}.menu-toggle{display:none}.hero{height:100svh;min-height:700px;position:relative;overflow:hidden}.hero-copy{position:absolute;z-index:2;top:29%;left:max(7%,calc((100% - 1320px)/2));width:43%;}.hero h1,.about h2,.about h3,.next-step h2,.business h2,.services h2,.archive h2,.company h2,.form-page h1,.thanks h1{font-family:var(--serif);font-weight:400;line-height:1.45;margin:0}.hero h1{font-size:clamp(42px,4.6vw,76px);letter-spacing:.1em}.rule{display:block;width:96px;height:1px;background:#d5d5d5;margin:36px 0}.hero-copy p{font-family:var(--serif);font-size:18px;line-height:2;letter-spacing:.08em;margin:0 0 36px}.hero-photo{height:100%;margin-left:45%;background:linear-gradient(90deg,#000 0%,rgba(0,0,0,.15) 24%,rgba(0,0,0,.04)),url('../images/hero-welder.png') center / cover no-repeat}.scroll-cue{position:absolute;bottom:34px;left:50%;z-index:2;font-size:11px;letter-spacing:.24em;display:grid;justify-items:center;gap:9px}.scroll-cue span{font-size:36px;font-weight:200;line-height:1}.scene-image{position:relative;min-height:100svh;display:grid;align-items:center;background:linear-gradient(90deg,rgba(0,0,0,.95) 0%,rgba(0,0,0,.82) 34%,rgba(0,0,0,.15) 76%),url('../images/engine.png') center / cover no-repeat}.about-inner{width:var(--container);margin:auto}.eyebrow{font-size:13px;letter-spacing:.2em;margin:0}.about h2{font-size:clamp(58px,7vw,116px);line-height:1.03;letter-spacing:.05em}.section-kicker{font-size:22px;margin:22px 0 45px}.about h3{font-size:clamp(32px,3.5vw,56px);margin-bottom:22px}.about-inner>p:last-child{font-family:var(--serif);line-height:2.25}.section{padding:clamp(90px,10vw,150px) max(28px,calc((100% - 1380px)/2));}.next-step{display:grid;grid-template-columns:32% 68%;gap:38px;align-items:start}.blue{color:var(--blue)}.blue-rule{background:var(--blue);box-shadow:0 0 12px var(--blue);height:3px;width:46px;margin:23px 0 56px}.next-step h2{font-size:clamp(34px,3.4vw,57px);letter-spacing:.1em;margin-bottom:40px}.next-intro>p:last-child{font-family:var(--serif);font-size:18px}.problem-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.problem-card{min-height:320px;border:1px solid var(--line);border-radius:7px;padding:32px 20px;text-align:center;display:flex;flex-direction:column;align-items:center;transition:transform .3s,border-color .3s}.problem-card:hover{transform:translateY(-5px);border-color:#777}.line-icon{font-size:50px;line-height:1.1;color:#f4f4f4;margin-bottom:24px}.problem-card h3{font-family:var(--serif);font-size:23px;font-weight:400;line-height:1.5;margin:0 0 15px}.problem-card p{font-size:12px;color:#d4d4d4;margin:0;line-height:1.75}.card-line{height:3px;width:35px;background:var(--blue);margin-top:auto}.next-outro{grid-column:1/-1;text-align:center;margin:34px 0 0;position:relative}.next-outro:before,.next-outro:after{content:'';position:absolute;top:17px;width:23%;height:1px;background:var(--line)}.next-outro:before{left:4%}.next-outro:after{right:4%}.next-outro p{font-size:18px}.next-outro span{color:var(--blue)}.text-link{display:inline-block;color:var(--blue);border-bottom:1px solid var(--blue);font-size:17px;margin-top:38px;padding:0 8px 7px}.business-top,.archive-heading{max-width:1200px;margin:0 auto 70px;display:grid;grid-template-columns:2fr 1fr;gap:10%;align-items:start}.business h2,.archive h2{font-size:clamp(42px,5vw,78px);letter-spacing:.1em}.business-top>p,.archive-heading>p{font-family:var(--serif);font-size:15px;margin:0;line-height:2}.gallery{display:grid;grid-template-columns:repeat(5,1fr);max-width:1500px;margin:0 auto}.gallery img{width:100%;height:240px;object-fit:cover;filter:grayscale(1);border-right:3px solid #000}.business-philosophy{text-align:center;margin-top:45px;font-family:var(--serif);font-size:20px}.three-steps{display:flex;align-items:center;justify-content:center;gap:30px;margin:18px 0}.three-steps span{display:flex;flex-direction:column;font-size:22px}.three-steps small{font-family:var(--sans);font-size:11px;color:var(--blue);letter-spacing:.15em}.three-steps i{width:60px;height:1px;background:#777}.button{border:1px solid var(--blue);display:inline-flex;align-items:center;justify-content:space-between;gap:100px;min-width:370px;padding:12px 30px;font-family:var(--sans);font-size:14px;font-weight:700;letter-spacing:.08em;margin-top:30px;transition:.3s}.button:hover,.button:focus-visible{background:var(--blue);color:#000}.button b{font-size:22px;font-weight:400}.services{padding-top:80px}.services-heading{text-align:center}.services h2{font-size:clamp(38px,4.7vw,70px);letter-spacing:.12em}.services-heading p{font-family:var(--serif);font-size:18px;line-height:1.8;margin:20px 0 42px}.service-photo{width:min(100%,1440px);height:220px;margin:0 auto 32px;object-fit:cover;object-position:center 50%;filter:grayscale(1)}.service-grid{max-width:1160px;margin:auto;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.service-card{border:1px solid #555;border-radius:8px;padding:27px 28px;position:relative;min-height:145px}.service-card>span{font-size:32px;position:absolute;left:28px;top:31px;color:#e9e9e9}.service-card h3{font-family:var(--serif);font-size:21px;margin:0 0 8px 78px;font-weight:500}.service-card h3:after{content:'';display:block;background:var(--blue);height:2px;width:25px;margin-top:7px}.service-card p{font-size:12px;margin:0 0 0 78px;line-height:1.65}.section-cta{text-align:center;margin-top:38px;font-family:var(--serif);font-size:17px}.archive{padding-top:100px}.archive-label{max-width:1200px;margin:0 auto 13px;font-size:13px}.project-grid{max-width:1380px;margin:auto;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.project-card{border:1px solid #444;border-radius:4px;padding:15px 18px;min-height:370px;position:relative}.project-card>p{font-size:11px;letter-spacing:.12em;margin:0 0 10px}.project-card>p b{font-size:19px;font-weight:400;margin-right:14px}.project-visual{height:150px;margin:0 -1px 15px;background-size:cover;background-position:center;filter:grayscale(1)}.project-1{background-image:url('../images/SC04-IMG-005.jpg')}.project-2{background-image:url('../images/SC04-IMG-004.jpg')}.project-3{background-image:url('../images/SC04-IMG-003.jpg')}.project-4{background-image:url('../images/SC04-IMG-001.jpg')}.project-5{background-image:url('../images/engine.png')}.project-card h3{font-size:18px;font-weight:400;letter-spacing:.06em;line-height:1.5;margin:0}.project-card small{display:block;margin:8px 0 18px}.project-card em{font-style:normal;color:var(--blue);font-size:13px;border-top:2px solid var(--blue);padding-top:8px}.arrow{position:absolute;right:18px;bottom:15px;font-size:24px;font-weight:400}.next-project{display:flex;flex-direction:column;justify-content:center}.next-project>p{color:var(--blue)}.next-project h3{font-family:var(--serif);font-size:22px}.company{min-height:900px;display:grid;grid-template-columns:50% 50%;position:relative;border-top:1px solid #222}.company-photo{background:linear-gradient(90deg,rgba(0,0,0,.05),#000 100%),url('../images/company.png') center / cover no-repeat;min-height:670px}.company-content{padding:110px max(40px,7vw) 80px 5vw}.company h2{font-size:clamp(37px,4vw,64px);letter-spacing:.1em}.company-content>p{font-family:var(--serif);font-size:17px;line-height:2.1;margin:30px 0 38px}.company-brand{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:25px 0;display:grid;grid-template-columns:1.4fr 1fr;gap:15px}.company-brand>div+div{padding-left:24px;border-left:1px solid var(--line)}.company-brand strong,.company-brand small{display:block}.company-brand strong{font-size:23px;font-weight:400;letter-spacing:.04em}.company-brand small{font-size:11px}.field-list{display:grid;grid-template-columns:repeat(6,1fr);list-style:none;margin:0;padding:25px 0;border-bottom:1px solid var(--line)}.field-list li{border-right:1px solid var(--line);text-align:center;font-size:11px;line-height:1.45;padding:8px 4px}.company-details{display:grid;grid-template-columns:repeat(3,1fr);margin:0;padding:22px 0;border-bottom:1px solid var(--line);gap:12px}.company-details div+div{padding-left:15px;border-left:1px solid var(--line)}.company-details dt{font-size:11px}.company-details dd{font-size:12px;margin:5px 0;word-break:break-all}.site-footer{text-align:center;padding:55px 20px;border-top:1px solid #2a2a2a;display:flex;flex-direction:column;align-items:center;gap:8px}.site-footer p{font-family:var(--serif);font-size:23px;margin:0}.blue-line{width:35px;height:2px;background:var(--blue)}.site-footer strong{font-weight:400;font-size:14px}.site-footer small,.site-footer a{font-size:11px;color:#aaa}.site-footer a{margin-top:12px;text-decoration:underline}.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}.reveal.is-visible{opacity:1;transform:none}

.form-page{padding:180px 28px 110px;min-height:100svh}.form-wrap{max-width:760px;margin:auto}.form-page h1,.thanks h1{font-size:clamp(40px,5vw,64px);letter-spacing:.08em}.form-lead{margin:25px 0 52px;font-family:var(--serif)}.contact-form{border-top:1px solid #555}.form-row{padding:28px 0;border-bottom:1px solid #333}.form-row label{display:block;font-weight:700;margin-bottom:11px}.required{color:var(--blue);font-size:12px;margin-left:8px}.form-row input,.form-row select,.form-row textarea{width:100%;padding:13px;border:1px solid #666;border-radius:0;background:#080808;color:#fff;font:inherit;letter-spacing:inherit}.form-row textarea{min-height:170px;resize:vertical}.form-note{font-size:12px;color:#bbb;margin:22px 0}.turnstile-note{font-size:12px;color:#999;margin-top:18px}.form-error{border:1px solid #d75b5b;padding:14px 18px;color:#ffd1d1;background:#2b0c0c;margin-bottom:24px}.thanks{min-height:100svh;display:grid;place-items:center;text-align:center;padding:130px 28px}.thanks p{font-family:var(--serif);line-height:2}.thanks .button{margin-top:30px}
@media(max-width:1023px){.site-nav{gap:22px;font-size:12px}.hero-copy{left:6%;width:49%}.hero-photo{margin-left:38%}.next-step{grid-template-columns:1fr}.next-intro{text-align:center}.next-intro .rule{margin-left:auto;margin-right:auto}.problem-grid{grid-template-columns:repeat(2,1fr)}.next-outro:before,.next-outro:after{width:15%}.gallery img{height:170px}.service-grid{grid-template-columns:repeat(2,1fr)}.project-grid{grid-template-columns:repeat(2,1fr)}.company{grid-template-columns:1fr}.company-photo{height:480px;min-height:0;background-position:center}.company-content{padding:80px max(28px,10vw)} }
@media(max-width:767px){:root{--container:calc(100% - 44px)}body{font-size:14px}.site-header{height:72px;padding:7px 22px}.brand{width:102px}.brand img{width:67px;height:67px;transform:scale(1.5)}.menu-toggle{display:flex;position:relative;z-index:22;width:42px;height:42px;border:0;background:transparent;padding:10px;flex-direction:column;justify-content:center;gap:7px}.menu-toggle span{height:1px;background:#fff;width:100%;display:block;transition:.2s}.menu-toggle[aria-expanded='true'] span:first-child{transform:translateY(4px) rotate(45deg)}.menu-toggle[aria-expanded='true'] span:last-child{transform:translateY(-4px) rotate(-45deg)}.site-nav{position:fixed;inset:0;background:rgba(0,0,0,.98);display:none;flex-direction:column;justify-content:center;gap:30px;font-size:16px}.site-nav.is-open{display:flex}.nav-contact{padding:10px 28px!important}.hero{min-height:720px;height:100svh}.hero-photo{margin:0;background:linear-gradient(180deg,rgba(0,0,0,.18),#000 84%),url('../images/hero-welder.png') 60% center / cover no-repeat}.hero-copy{top:auto;bottom:115px;left:22px;width:calc(100% - 44px)}.hero h1{font-size:39px;letter-spacing:.06em}.hero-copy .rule{margin:23px 0}.hero-copy p{font-size:14px;line-height:1.85;margin-bottom:20px}.scroll-cue{left:auto;right:24px;bottom:20px;font-size:9px}.scene-image{min-height:680px;background:linear-gradient(180deg,rgba(0,0,0,.45),#000 88%),url('../images/engine.png') 57% center / cover no-repeat;align-items:end}.about-inner{padding-bottom:72px}.about h2{font-size:57px}.about h3{font-size:34px}.about-inner>p:last-child{font-size:13px;line-height:2.1}.section{padding:88px 22px}.next-step h2{font-size:37px}.next-intro>p:last-child{font-size:15px}.problem-grid{grid-template-columns:1fr;gap:12px}.problem-card{min-height:234px;padding:24px}.line-icon{font-size:38px;margin-bottom:12px}.problem-card h3{font-size:21px}.next-outro{margin-top:25px}.next-outro:before,.next-outro:after{display:none}.next-outro p{font-size:15px}.business-top,.archive-heading{display:block;margin-bottom:44px}.business-top h2,.archive h2{font-size:43px;margin-bottom:35px}.gallery{display:flex;overflow-x:auto;margin:0 -22px;scroll-snap-type:x mandatory}.gallery img{min-width:76vw;height:250px;scroll-snap-align:start}.business-philosophy{font-size:16px}.three-steps{gap:9px}.three-steps span{font-size:16px}.three-steps small{font-size:8px}.three-steps i{width:20px}.button{min-width:min(100%,340px);gap:35px;padding:13px 22px}.services h2{font-size:38px;line-height:1.45}.services-heading p{font-size:15px}.service-photo{height:160px;margin-bottom:20px}.service-grid{grid-template-columns:1fr}.service-card{min-height:135px}.archive-heading>p{font-size:14px}.project-grid{grid-template-columns:1fr}.project-card{min-height:330px}.company-photo{height:330px}.company-content{padding:62px 22px}.company h2{font-size:38px}.company-content>p{font-size:14px}.company-brand{grid-template-columns:1fr}.company-brand>div+div{border-left:0;border-top:1px solid var(--line);padding:15px 0 0}.company-brand strong{font-size:20px}.field-list{grid-template-columns:repeat(3,1fr);gap:12px}.field-list li:nth-child(3n){border-right:0}.company-details{grid-template-columns:1fr}.company-details div+div{padding:15px 0 0;border-left:0;border-top:1px solid var(--line)}.form-page{padding:130px 22px 80px}.form-page h1{font-size:39px}.form-lead{font-size:14px}.thanks{padding:110px 22px}.thanks h1{font-size:39px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.reveal{opacity:1;transform:none;transition:none}*{transition-duration:.01ms!important}}

/* Phase 06 refinement: supplied assets and visual-prototype spacing */
.site-header.is-scrolled{background:rgba(0,0,0,.38);border-bottom-color:rgba(255,255,255,.08)}
.hero h1{font-size: clamp(46px, 3.9vw, 66px)}
.hero-copy{top:50%;transform:translateY(-52%)}
.hero-photo{margin-left:5%;background-position:56% center}
.about h2{font-size:clamp(52px,6.2vw,100px)}
.section-kicker{font-family:var(--serif)}
.next-rule{background:#d5d5d5;box-shadow:none;height:1px}
.line-icon{width:52px;height:52px;object-fit:contain;font-size:0}
.service-card>img{position:absolute;left:28px;top:31px;width:40px;height:40px;object-fit:contain}
.project-visual{display:block;width:100%;object-fit:cover}
.next-project{justify-content:center;align-items:center}
.next-project-content{width:100%}
.site-footer p{font-size:19px}
@media(min-width:1024px){
  .about{min-height:100svh;height:100svh}.about-inner{padding-top:45px}.about .rule{margin:22px 0}.about .section-kicker{margin:14px 0 25px}.about h3{font-size:45px;margin-bottom:14px}.about-inner>p:last-child{font-size:13px;line-height:2.05}
  .next-step{min-height:100svh;padding-top:100px;padding-bottom:48px;gap:30px}.next-step h2{font-size:48px;line-height:1.38;margin-bottom:23px}.next-intro>p:last-child{font-size:15px;line-height:1.9}.next-intro .blue-rule{margin:18px 0 26px}.next-intro .next-rule{margin:18px 0 38px}.problem-grid{gap:12px}.problem-card{min-height:242px;padding:20px 16px}.problem-card .line-icon{width:42px;height:42px;margin-bottom:13px}.problem-card h3{font-size:19px;margin-bottom:9px}.problem-card p{font-size:11px}.next-outro{margin-top:18px;display:flex;align-items:center;gap:32px}.next-outro:before,.next-outro:after{position:static;flex:1;width:auto}.next-outro p{white-space:nowrap;font-size:16px;margin:0}.next-outro .text-link{display:none}
  .company{height:100svh;min-height:720px}.company-photo{min-height:0}.company-content{padding:78px max(40px,6vw) 38px 4.5vw}.company h2{font-size:clamp(36px,3.45vw,54px);line-height:1.38}.company-content>p{font-size:15px;line-height:1.85;margin:21px 0 25px}.company-brand{padding:16px 0}.field-list{padding:13px 0}.field-list li{padding:4px}.company-details{padding:14px 0}.company-content .button{margin-top:18px}
}
@media(max-width:767px){.hero-copy{transform:none;top:auto}.hero-photo{margin:0;background-position:60% center}.line-icon{width:42px;height:42px}.service-card>img{width:34px;height:34px;top:27px}.next-outro{display:block}.next-outro .text-link{display:inline-block}}
@media(min-width:1024px){.next-outro{justify-content:center;flex-wrap:wrap}.next-outro .text-link{display:inline-block;flex-basis:auto;margin:10px 30% 0}}

/* Refinement 02: restore visual breathing room and supplied SVG visibility */
.hero-photo{background-position:48% center}
.about h2{font-size:clamp(46px,5.35vw,86px)}
.next-eyebrow{color:#fff}
.problem-card .line-icon,.service-card>img{filter:invert(1)}
.archive-heading{align-items:center}
@media(min-width:1024px){
  .next-step{min-height:0;padding-top:130px;padding-bottom:125px}.next-step h2{font-size:48px;margin-bottom:30px}.problem-grid{gap:16px}.problem-card{min-height:314px;padding:30px 20px}.problem-card .line-icon{width:56px;height:56px;margin-bottom:24px}.problem-card h3{font-size:22px;margin-bottom:15px}.problem-card p{font-size:12px}.next-outro{margin-top:38px;display:grid;grid-template-columns:minmax(60px,1fr) auto minmax(60px,1fr);column-gap:32px;row-gap:0}.next-outro:before,.next-outro:after{display:block;width:auto;position:static}.next-outro p{font-size:18px}.next-outro .text-link{grid-column:1/-1;justify-self:center;margin:38px 0 0}
  .service-card{min-height:158px;padding:30px 28px}.service-card>img{width:44px;height:44px;top:33px}.service-card h3{margin-left:82px}.service-card p{margin-left:82px}
}

/* CR-012 final layout corrections */
@media(min-width:768px){
  .hero-copy.reveal,.hero-copy.reveal.is-visible{top:50%;bottom:auto;transform:translateY(-50%)}
}
@media(min-width:1024px){
  .next-outro{display:grid;grid-template-columns:minmax(80px,220px) max-content minmax(80px,220px);justify-content:center;align-items:center;column-gap:32px;row-gap:0;flex-wrap:nowrap}
  .next-outro:before,.next-outro:after{display:block;position:static;width:100%;max-width:220px;min-width:80px;height:1px;top:auto;left:auto;right:auto}
  .next-outro p{grid-column:2;white-space:nowrap;margin:0}
  .next-outro:before{grid-column:1;grid-row:1}.next-outro:after{grid-column:3;grid-row:1}
  .next-outro .text-link{grid-column:1/-1;grid-row:2;justify-self:center;margin:38px 0 0}
}

/* CR-013: final pre-release UI adjustments */
@media(min-width:1024px){
  .company-details{grid-template-columns:1.05fr 1.45fr .8fr;gap:0}
  .company-details dd,.company-details dd a{white-space:nowrap;word-break:normal}
}
@media(max-width:767px){
  .hero-photo{background-position:90% center}
}

/* CR-014: mobile navigation must remain usable from every scroll position. */
body.menu-open{position:fixed;width:100%;overflow:hidden}
@media(max-width:767px){
  .site-nav{height:100dvh;min-height:100vh;overflow-y:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch;padding:calc(72px + env(safe-area-inset-top)) 24px calc(32px + env(safe-area-inset-bottom));justify-content:center}
  .site-nav.is-open{display:flex}
}

/* Project card links: preserve the existing card layout while making the full card actionable. */
.project-card-link{position:absolute;inset:0;z-index:2}
.project-card-link:focus-visible{outline:2px solid var(--blue);outline-offset:3px}