:root{
  --paper:#f5f4ef;
  --white:#ffffff;
  --ink:#171717;
  --muted:#66645f;
  --line:#d8d6cf;
  --line-dark:#a7a49c;
  --accent:#2054d7;
  --accent-dark:#163d9f;
  --dark:#111214;
  --max:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,system-ui,sans-serif;color:var(--ink);background:var(--paper);line-height:1.8;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit}
img{max-width:100%;display:block}
.wrap{width:min(calc(100% - 64px),var(--max));margin:auto}

/* Header */
.header{position:sticky;top:0;z-index:50;background:rgba(245,244,239,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.header-inner{height:78px;display:flex;align-items:center;justify-content:space-between;gap:32px}
.logo{display:inline-flex;align-items:center;gap:12px;font-size:19px;font-weight:800;letter-spacing:.04em}
.logo-mark{width:26px;height:26px;position:relative;border:2px solid var(--ink)}
.logo-mark:before,.logo-mark:after{content:"";position:absolute;background:var(--ink)}
.logo-mark:before{width:12px;height:2px;left:5px;top:6px;box-shadow:0 8px 0 var(--ink)}
.logo-mark:after{width:2px;height:12px;left:11px;top:5px}
.nav{display:flex;align-items:center;gap:30px;font-size:13px;font-weight:700}
.nav>a:not(.header-cta){padding:28px 0 25px;border-bottom:2px solid transparent}
.nav>a:not(.header-cta):hover{border-color:var(--ink)}
.header-cta{padding:12px 18px;background:var(--ink);color:#fff}
.menu-btn{display:none;border:0;background:none;font-size:28px;line-height:1;cursor:pointer}

/* Type / buttons */
.eyebrow,.kicker{display:inline-block;font-size:11px;font-weight:800;letter-spacing:.18em;text-transform:uppercase;color:var(--accent)}
h1,h2,h3,p{word-break:normal}
h1{font-size:clamp(46px,6.7vw,88px);line-height:1.08;letter-spacing:-.05em;margin:18px 0 28px;font-weight:750}
h2{font-size:clamp(32px,4.4vw,54px);line-height:1.25;letter-spacing:-.035em;margin:10px 0 0;font-weight:720}
h3{line-height:1.45}
.lead{font-size:18px;line-height:1.9;color:#44433f;max-width:720px}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:34px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:0 21px;border:1px solid var(--ink);font-size:14px;font-weight:800;transition:.18s ease}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--accent);border-color:var(--accent)}
.btn-secondary{background:transparent;color:var(--ink)}
.btn-secondary:hover{background:var(--white)}
.micro{margin-top:15px;font-size:12px;color:#79766f}

/* Hero */
.hero{background:var(--paper);border-bottom:1px solid var(--line)}
.hero-inner{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(340px,.7fr);gap:70px;align-items:end;padding:112px 0 96px}
.hero-copy{padding-bottom:6px}
.hero h1 .accent{color:var(--accent)}
.hero-proof{border-top:1px solid var(--ink);padding-top:18px}
.hero-proof-title{font-size:12px;font-weight:800;letter-spacing:.1em;margin-bottom:30px}
.hero-stat{display:grid;grid-template-columns:120px 1fr;gap:18px;padding:21px 0;border-top:1px solid var(--line)}
.hero-stat:first-of-type{border-top:0}
.hero-stat strong{font-size:31px;line-height:1.1;letter-spacing:-.035em}
.hero-stat span{font-size:13px;color:var(--muted);align-self:center;line-height:1.65}
.hero-proof-note{margin:26px 0 0;padding-top:22px;border-top:1px solid var(--line);font-size:13px;color:#474641}

/* Horizontal proof */
.trustbar{background:var(--white);border-bottom:1px solid var(--line)}
.trustbar-inner{display:grid;grid-template-columns:repeat(4,1fr)}
.trust-item{padding:26px 22px;border-left:1px solid var(--line)}
.trust-item:first-child{border-left:0}
.trust-item strong{display:block;font-size:15px;margin-bottom:4px}
.trust-item span{font-size:12px;color:var(--muted)}

/* Sections */
.section{padding:112px 0;border-bottom:1px solid var(--line)}
.section.white{background:var(--white)}
.section.soft{background:var(--paper)}
.section.dark{background:var(--dark);color:#fff}
.section-head{display:grid;grid-template-columns:minmax(280px,.85fr) minmax(420px,1.15fr);gap:72px;align-items:end;margin-bottom:64px}
.section-head>p{margin:0;color:var(--muted);max-width:650px;font-size:15px}

/* Problems / strengths */
.problem-grid,.cards3{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--ink)}
.problem-grid>.card,.cards3>.card{border-right:1px solid var(--line)}
.problem-grid>.card:last-child,.cards3>.card:last-child{border-right:0}
.card{background:transparent;padding:34px 30px 10px 0;border:0;border-radius:0;box-shadow:none}
.problem-grid>.card:not(:first-child),.cards3>.card:not(:first-child){padding-left:30px}
.card h3{font-size:21px;margin:18px 0 12px}
.card p{margin:0;color:var(--muted);font-size:14px}
.icon{width:auto;height:auto;display:block;background:none;border-radius:0;font-size:11px;letter-spacing:.13em;font-weight:800;color:var(--accent)}
.num{font-size:12px;letter-spacing:.12em;font-weight:800;color:var(--accent)}
.value-card.featured{background:transparent;color:inherit}
.value-card.featured p{color:var(--muted)}

.band{margin-top:70px;display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center;border-top:1px solid var(--ink);border-bottom:1px solid var(--ink);padding:30px 0;background:transparent;color:inherit}
.band h3{font-size:26px;margin:0 0 6px;letter-spacing:-.02em}.band p{margin:0;color:var(--muted)}
.band .btn-primary{background:var(--ink);color:#fff;border-color:var(--ink)}
.band .btn-primary:hover{background:var(--accent);color:#fff;border-color:var(--accent)}

/* Services */
.service-list{display:grid;grid-template-columns:repeat(2,1fr);border-top:1px solid var(--ink)}
.service{display:grid;grid-template-columns:90px 1fr;gap:20px;padding:30px 24px 30px 0;border-bottom:1px solid var(--line)}
.service:nth-child(odd){border-right:1px solid var(--line);padding-right:34px}
.service:nth-child(even){padding-left:34px}
.service .icon{font-size:12px;padding-top:4px}
.service h3{margin:0 0 8px;font-size:20px}.service p{margin:0;color:var(--muted);font-size:14px}


/* Technology */
.tech-grid{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--ink);border-bottom:1px solid var(--line)}
.tech-group{padding:30px 34px 30px 0}
.tech-group+ .tech-group{border-left:1px solid var(--line);padding-left:34px}
.tech-label{display:block;font-size:11px;font-weight:800;letter-spacing:.13em;color:var(--accent);margin-bottom:18px}
.tech-tags{display:flex;flex-wrap:wrap;gap:8px}
.tech-tags span{border:1px solid var(--line-dark);padding:7px 10px;font-size:12px;background:var(--white)}
.tech-note{max-width:860px;margin:24px 0 0;color:var(--muted);font-size:13px}

/* Cases */
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0;border-top:1px solid var(--ink)}
.case{padding:36px 36px 12px 0;border:0;border-radius:0;background:transparent}
.case+ .case{border-left:1px solid var(--line);padding-left:36px}
.case-tag{font-size:11px;letter-spacing:.12em;font-weight:800;color:var(--accent)}
.case h3{font-size:27px;letter-spacing:-.02em;margin:16px 0 12px}
.case p,.case li{color:var(--muted);font-size:14px}
.case ul{padding-left:20px;margin:22px 0}
.stack{display:flex;gap:7px;flex-wrap:wrap;margin-top:24px}.stack span{font-size:11px;border:1px solid var(--line);padding:5px 8px;background:transparent}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--ink)}
.step{padding:28px 24px 12px 0;border:0;border-right:1px solid var(--line);background:transparent;border-radius:0}
.step:not(:first-child){padding-left:24px}.step:last-child{border-right:0}
.step b{font-size:11px;color:var(--accent);letter-spacing:.1em}.step h3{font-size:18px;margin:12px 0 5px}.step p{font-size:13px;color:var(--muted);margin:0}

/* FAQ */
.faq{border-top:1px solid var(--ink)}
.faq details{background:transparent;border:0;border-bottom:1px solid var(--line);border-radius:0;padding:0}
.faq summary{cursor:pointer;font-weight:750;padding:23px 42px 23px 0;position:relative;list-style:none}
.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"＋";position:absolute;right:0;top:20px;font-size:18px;font-weight:400}.faq details[open] summary:after{content:"−"}
.faq p{color:var(--muted);margin:0 0 24px;max-width:820px;font-size:14px}

/* CTA / Footer */
.final-cta{padding:96px 0;background:var(--accent);color:#fff}
.final-box{max-width:900px;margin:0 auto;text-align:left}
.final-box h2{font-size:clamp(38px,5.4vw,66px);line-height:1.15;letter-spacing:-.045em;margin:0 0 20px}.final-box p{font-size:16px;color:rgba(255,255,255,.82);max-width:680px}.final-box .btn{border-color:#fff}.final-box .btn-primary{background:#fff;color:var(--ink)}.final-box .btn-secondary{color:#fff;background:var(--dark);border-color:var(--dark)}.final-box .btn-secondary:hover{background:#2a2b2e;color:#fff;border-color:#2a2b2e}
.footer{background:var(--dark);color:#fff;padding:56px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.6fr .7fr .7fr;gap:60px}.footer h4{margin:0 0 14px;font-size:11px;letter-spacing:.14em}.footer p,.footer a{font-size:12px;color:#aaa}.footer-links{display:grid;gap:7px}.footer .logo-mark{border-color:#fff}.footer .logo-mark:before,.footer .logo-mark:after{background:#fff}.footer .logo-mark:before{box-shadow:0 8px 0 #fff}.copyright{margin-top:45px;padding-top:18px;border-top:1px solid #2c2d30;font-size:11px;color:#777}

/* Inner page */
.page-hero{padding:104px 0 82px;background:var(--paper);border-bottom:1px solid var(--line)}
.page-hero h1{font-size:clamp(46px,6.4vw,80px);max-width:980px}.page-hero> .wrap>p{font-size:17px;color:var(--muted);max-width:760px}
.badge-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:28px}.badge{font-size:11px;border:1px solid var(--line-dark);padding:6px 9px;background:transparent}
.company-story{display:grid;grid-template-columns:1.05fr .95fr;gap:84px;align-items:start}
.company-story p{color:var(--muted)}.company-story strong{color:var(--ink)}
.story-visual{min-height:420px;border:0;border-top:1px solid var(--ink);border-bottom:1px solid var(--ink);background:transparent;color:var(--ink);padding:36px 0;position:relative;overflow:visible}
.story-visual:after{display:none}.story-visual .quote{font-size:clamp(30px,4vw,46px);line-height:1.45;font-weight:700;letter-spacing:-.035em;margin:26px 0}.story-visual .small{font-size:14px;color:var(--muted);max-width:500px}
.profile-table{border-top:1px solid var(--ink);background:transparent}
.profile-row{display:grid;grid-template-columns:220px 1fr;border-bottom:1px solid var(--line)}.profile-row dt,.profile-row dd{margin:0;padding:18px 0}.profile-row dt{font-weight:750;font-size:13px}.profile-row dd{color:#4d4b47;font-size:14px}

/* Contact */
.contact-layout{display:grid;grid-template-columns:360px minmax(0,1fr);gap:72px;align-items:start}
.contact-aside{position:sticky;top:112px;padding:0;border-top:1px solid var(--ink);background:transparent;color:var(--ink)}
.contact-aside h3{font-size:28px;letter-spacing:-.025em;margin:24px 0 12px}.contact-aside p{color:var(--muted);font-size:14px}.contact-points{display:grid;margin-top:28px;border-top:1px solid var(--line)}
.contact-point{display:grid;grid-template-columns:24px 1fr;gap:12px;padding:17px 0;border-bottom:1px solid var(--line)}.contact-point i{width:auto;height:auto;border-radius:0;background:none;color:var(--accent);font-style:normal;font-size:12px;font-weight:900}.contact-point strong{font-size:13px}.contact-point small{color:var(--muted)!important}
.form-card{background:var(--white);border:1px solid var(--line);padding:42px}
.form-card h2{font-size:31px;margin:0 0 5px}.form-card>p{font-size:13px;color:var(--muted)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}.field{margin-top:23px}.field label{display:block;font-size:13px;font-weight:750;margin-bottom:8px}.req{display:inline-block;margin-left:7px;font-size:10px;color:var(--accent)}
.field input,.field textarea,.field select{width:100%;border:1px solid #c9c7c0;background:#fff;padding:13px 14px;border-radius:0;outline:none;color:var(--ink)}.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--ink)}.field textarea{min-height:170px;resize:vertical}
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.check{display:flex!important;align-items:center;gap:8px;border:1px solid var(--line);padding:11px 12px;margin:0!important;font-weight:600!important;background:#fafaf8}.check input{width:auto}.submit-note{font-size:11px!important;color:#8a877f!important;margin:12px 0 0}

@media(max-width:980px){
  .wrap{width:min(calc(100% - 40px),var(--max))}
  .nav{display:none}.nav.mobile-open{display:flex;position:absolute;top:66px;left:14px;right:14px;padding:18px;background:var(--paper);border:1px solid var(--line);flex-direction:column;align-items:stretch;gap:4px}.nav.mobile-open>a{padding:11px 8px!important;border-bottom:0!important}.menu-btn{display:block}
  .hero-inner{grid-template-columns:1fr;padding:82px 0 70px;gap:54px}.hero-proof{max-width:620px}
  .trustbar-inner{grid-template-columns:repeat(2,1fr)}.trust-item:nth-child(odd){border-left:0}.trust-item:nth-child(n+3){border-top:1px solid var(--line)}
  .section{padding:82px 0}.section-head{grid-template-columns:1fr;gap:22px;margin-bottom:48px}
  .problem-grid,.cards3{grid-template-columns:1fr}.problem-grid>.card,.cards3>.card{border-right:0;border-bottom:1px solid var(--line);padding:26px 0!important}.problem-grid>.card:last-child,.cards3>.card:last-child{border-bottom:0}
  .service-list,.case-grid,.tech-grid{grid-template-columns:1fr}.service{padding:25px 0!important;border-right:0!important}.tech-group{padding:26px 0!important}.tech-group+ .tech-group{border-left:0;border-top:1px solid var(--line)}.case{padding:30px 0!important}.case+.case{border-left:0;border-top:1px solid var(--line)}
  .steps{grid-template-columns:repeat(2,1fr)}.step:nth-child(2){border-right:0}.step:nth-child(n+3){border-top:1px solid var(--line);padding-top:24px}.step:nth-child(3){padding-left:0}
  .company-story,.contact-layout{grid-template-columns:1fr;gap:54px}.contact-aside{position:static}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}
}
@media(max-width:640px){
  .wrap{width:min(calc(100% - 28px),var(--max))}.header-inner{height:66px}.logo{font-size:16px}.logo-mark{width:23px;height:23px}
  h1{font-size:43px}.hero-inner{padding:64px 0 58px}.lead{font-size:16px}.cta-row{display:grid}.btn{width:100%}
  .hero-stat{grid-template-columns:95px 1fr}.hero-stat strong{font-size:25px}
  .trustbar-inner{grid-template-columns:1fr}.trust-item{border-left:0!important;border-top:1px solid var(--line)!important}.trust-item:first-child{border-top:0!important;padding-top:22px}
  .section{padding:66px 0}.section-head{margin-bottom:38px}.section-head>p{font-size:14px}.band{grid-template-columns:1fr;margin-top:48px}.band .btn{width:auto;justify-self:start}
  .service{grid-template-columns:68px 1fr}.steps{grid-template-columns:1fr}.step{border-right:0!important;border-top:1px solid var(--line)!important;padding:22px 0!important}.step:first-child{border-top:0!important}
  .page-hero{padding:72px 0 58px}.page-hero h1{font-size:43px}.company-story{gap:40px}.story-visual{min-height:0}.profile-row{grid-template-columns:1fr}.profile-row dt{padding-bottom:3px}.profile-row dd{padding-top:0}
  .form-card{padding:25px 18px}.form-row,.check-grid{grid-template-columns:1fr}.final-cta{padding:72px 0}.footer-grid{grid-template-columns:1fr;gap:30px}.footer-grid>div:first-child{grid-column:auto}
}