/* ============================================
   SKY SCAFFOLD - Premium Design A
   Technical Blueprint / Deep Sky Blue + Emerald
   ============================================ */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#F8FAFB;--surface:#fff;--surface2:#EFF6FF;--surface3:#ECFDF5;
  --text:#1E293B;--primary:#0369A1;--accent:#059669;--muted:#64748B;
  --font-en:'Inter',sans-serif;--font-jp:'Noto Sans JP',sans-serif;
  --radius:6px;--shadow:0 1px 3px rgba(0,0,0,.06),0 1px 2px rgba(0,0,0,.04);
  --shadow-lg:0 10px 25px rgba(3,105,161,.08),0 4px 10px rgba(0,0,0,.04);
}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-jp);background:var(--bg);color:var(--text);line-height:1.8;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:1100px;margin:0 auto;padding:0 40px}
@media(max-width:768px){.container{padding:0 20px}}

/* Sample Banner */
.sample-banner{position:fixed;top:0;left:0;right:0;background:var(--primary);color:#fff;text-align:center;font-size:13px;padding:8px 16px;z-index:99999;letter-spacing:.5px}

/* Header */
.header{position:fixed;top:32px;left:0;right:0;z-index:9998;padding:14px 0;transition:all .3s}
.header.scrolled{background:rgba(248,250,251,.97);backdrop-filter:blur(16px);box-shadow:0 1px 12px rgba(0,0,0,.06);padding:10px 0}
.header-inner{max-width:1100px;margin:0 auto;padding:0 40px;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none}
.logo-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:.85rem;position:relative}
.logo-icon::after{content:'';position:absolute;inset:2px;border:1px solid rgba(255,255,255,.3);border-radius:6px}
.logo-text{font-family:var(--font-en);font-weight:700;font-size:1.05rem;color:var(--primary);line-height:1.2;letter-spacing:.5px}
.logo-text small{display:block;font-size:.6rem;font-weight:400;color:var(--muted);letter-spacing:2px}
.nav{display:flex;align-items:center;gap:28px}
.nav a{font-size:.82rem;font-weight:500;color:var(--muted);transition:color .3s}
.nav a:hover{color:var(--primary)}
.nav-cta{background:var(--primary)!important;color:#fff!important;padding:10px 24px;border-radius:6px;font-weight:600!important;transition:all .3s!important}
.nav-cta:hover{background:var(--accent)!important;transform:translateY(-1px)}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px;background:none;border:none}
.hamburger span{width:22px;height:2px;background:var(--primary);transition:.3s;display:block}
@media(max-width:840px){
  .hamburger{display:flex}
  .nav{position:fixed;inset:0;background:var(--bg);flex-direction:column;align-items:center;justify-content:center;gap:28px;opacity:0;visibility:hidden;transition:.4s;z-index:9999}
  .nav.open{opacity:1;visibility:visible}
  .nav a{font-size:1.1rem}
  .header-inner{padding:0 20px}
}

/* Hero */
.hero{min-height:100vh;display:flex;align-items:center;position:relative;overflow:hidden;padding:120px 0 80px}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(3,105,161,.82),rgba(5,150,105,.6))}
.hero-inner{position:relative;z-index:2;max-width:1100px;margin:0 auto;padding:0 40px;display:grid;grid-template-columns:1.2fr 1fr;gap:60px;align-items:center}
.hero-left{max-width:560px}
.hero-label{font-family:var(--font-en);font-size:.7rem;color:rgba(255,255,255,.9);letter-spacing:5px;margin-bottom:20px;display:flex;align-items:center;gap:12px;text-transform:uppercase;font-weight:600}
.hero-label::before{content:'';width:32px;height:1px;background:rgba(255,255,255,.5)}
.hero h1{font-size:clamp(2rem,4.5vw,3.2rem);font-weight:800;color:#fff;line-height:1.35;margin-bottom:20px}
.hero h1 em{font-style:normal;color:#A7F3D0}
.hero-desc{font-size:.92rem;color:rgba(255,255,255,.85);line-height:2;margin-bottom:36px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats-box{background:rgba(255,255,255,.1);backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.15);border-radius:12px;padding:36px 28px;display:grid;grid-template-columns:1fr;gap:0}
.stat-row{display:flex;align-items:center;gap:16px;padding:16px 0;border-bottom:1px solid rgba(255,255,255,.1)}
.stat-row:last-child{border-bottom:none}
.stat-num{font-family:var(--font-en);font-size:2rem;font-weight:800;color:#fff;min-width:100px}
.stat-num span{font-size:.8rem;font-weight:500;opacity:.8}
.stat-label{font-size:.78rem;color:rgba(255,255,255,.7);letter-spacing:1px}
@media(max-width:840px){
  .hero-inner{grid-template-columns:1fr;padding:0 20px;text-align:center}
  .hero-actions{justify-content:center}
  .hero-label{justify-content:center}
  .hero-label::before{display:none}
}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;font-size:.88rem;font-weight:600;padding:14px 32px;border-radius:var(--radius);transition:all .3s;border:none;cursor:pointer;text-decoration:none}
.btn-primary{background:#fff;color:var(--primary)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn-outline{border:1.5px solid rgba(255,255,255,.5);color:#fff;background:transparent}
.btn-outline:hover{background:rgba(255,255,255,.15)}
.btn-dark{background:var(--primary);color:#fff}
.btn-dark:hover{background:#025E8F;transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#047857;transform:translateY(-2px)}
.btn-full{width:100%;justify-content:center}

/* Trust Bar */
.trust-bar{background:var(--surface);padding:48px 0;border-top:1px solid #E2E8F0;border-bottom:1px solid #E2E8F0}
.trust-items{max-width:1000px;margin:0 auto;display:flex;justify-content:center;gap:48px;flex-wrap:wrap;padding:0 20px}
.trust-item{text-align:center}
.trust-num{font-family:var(--font-en);font-size:2.2rem;font-weight:800;color:var(--primary)}
.trust-unit{font-size:.8rem;color:var(--accent);font-weight:600}
.trust-label{display:block;font-size:.72rem;color:var(--muted);margin-top:4px;letter-spacing:1px}
.trust-divider{width:1px;height:40px;background:#E2E8F0;align-self:center}

/* Sections */
.section{padding:100px 0}
.section-alt{background:var(--surface)}
.section-header{text-align:center;margin-bottom:56px}
.section-label{font-family:var(--font-en);font-size:.7rem;color:var(--accent);letter-spacing:5px;font-weight:700;display:block;margin-bottom:8px;text-transform:uppercase}
.section-title{font-size:clamp(1.5rem,3vw,2.2rem);font-weight:800;letter-spacing:1px}
.section-line{width:40px;height:2px;background:linear-gradient(90deg,var(--primary),var(--accent));margin:16px auto 0}
.section-sub{font-size:.88rem;color:var(--muted);margin-top:16px;max-width:600px;margin-left:auto;margin-right:auto;line-height:1.9}

/* Blueprint Grid (decorative) */
.blueprint-bg{position:relative;overflow:hidden}
.blueprint-bg::before{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(3,105,161,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(3,105,161,.03) 1px,transparent 1px);background-size:40px 40px;pointer-events:none}

/* Service Cards */
.service-grid{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding:0 40px}
.service-card{background:var(--surface);border:1px solid #E2E8F0;border-radius:var(--radius);overflow:hidden;transition:all .4s;position:relative}
.service-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--accent));opacity:0;transition:opacity .3s}
.service-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.service-card:hover::before{opacity:1}
.service-card-body{padding:32px 28px}
.service-num{font-family:var(--font-en);font-size:.65rem;color:var(--accent);letter-spacing:4px;font-weight:700}
.service-card h3{font-size:1.1rem;font-weight:700;margin:10px 0 14px;color:var(--primary)}
.service-card p{font-size:.84rem;color:var(--muted);line-height:1.9}
.service-tag{display:inline-block;font-size:.7rem;color:var(--accent);background:var(--surface3);padding:4px 12px;border-radius:4px;margin-top:12px;font-weight:500}
@media(max-width:840px){.service-grid{grid-template-columns:1fr;padding:0 20px}}

/* Reasons */
.reasons-grid{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:0 40px}
.reason-card{text-align:center;padding:36px 20px;background:var(--surface);border:1px solid #E2E8F0;border-radius:var(--radius);transition:all .3s;position:relative;overflow:hidden}
.reason-card::after{content:'';position:absolute;bottom:0;left:0;right:0;height:3px;background:var(--accent);transform:scaleX(0);transition:transform .3s}
.reason-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.reason-card:hover::after{transform:scaleX(1)}
.reason-num{font-family:var(--font-en);font-size:2.5rem;font-weight:800;color:var(--primary);opacity:.12;display:block;margin-bottom:12px;line-height:1}
.reason-card h3{font-size:.95rem;font-weight:700;margin-bottom:10px;color:var(--text)}
.reason-card p{font-size:.8rem;color:var(--muted);line-height:1.8}
@media(max-width:840px){.reasons-grid{grid-template-columns:repeat(2,1fr);padding:0 20px}}
@media(max-width:480px){.reasons-grid{grid-template-columns:1fr}}

/* Features */
.features-grid{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding:0 40px}
.feature-card{background:var(--surface);border:1px solid #E2E8F0;border-radius:var(--radius);padding:36px 28px;text-align:center;transition:all .3s}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.feature-icon{width:56px;height:56px;background:var(--surface2);border-radius:12px;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;font-size:1.4rem;color:var(--primary)}
.feature-card h3{font-size:1rem;font-weight:700;margin-bottom:10px}
.feature-card p{font-size:.84rem;color:var(--muted);line-height:1.8}
@media(max-width:840px){.features-grid{grid-template-columns:1fr;padding:0 20px}}

/* Spec Table */
.spec-section{max-width:900px;margin:0 auto;padding:0 40px}
.spec-table{width:100%;border-collapse:collapse}
.spec-table th,.spec-table td{padding:16px 20px;text-align:left;border-bottom:1px solid #E2E8F0;font-size:.88rem}
.spec-table th{background:var(--surface2);color:var(--primary);font-weight:600;width:180px}
.spec-table td{color:var(--muted)}
@media(max-width:600px){.spec-table th{width:120px;padding:12px}.spec-table td{padding:12px}}

/* Process */
.process-flow{max-width:900px;margin:0 auto;padding:0 40px;display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.process-step{text-align:center;padding:24px 12px;position:relative}
.process-step::after{content:'';position:absolute;right:-8px;top:36px;width:16px;height:2px;background:var(--accent)}
.process-step:last-child::after{display:none}
.process-num{font-family:var(--font-en);font-size:.65rem;color:var(--accent);letter-spacing:2px;font-weight:700;margin-bottom:12px}
.process-step h3{font-size:.85rem;font-weight:700;margin-bottom:8px}
.process-step p{font-size:.75rem;color:var(--muted);line-height:1.7}
@media(max-width:840px){
  .process-flow{grid-template-columns:1fr;padding:0 20px}
  .process-step::after{display:none}
  .process-step{text-align:left;padding:16px 0;border-bottom:1px solid #E2E8F0}
}

/* Testimonials */
.testimonial-grid{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding:0 40px}
.testimonial-card{background:var(--surface);border:1px solid #E2E8F0;border-radius:var(--radius);padding:32px;transition:all .3s}
.testimonial-card:hover{box-shadow:var(--shadow-lg)}
.testimonial-text{font-size:.9rem;line-height:2;margin-bottom:20px;color:var(--text)}
.testimonial-text::before{content:"\201C";font-size:2.5rem;color:var(--primary);opacity:.2;display:block;line-height:1;margin-bottom:8px;font-family:var(--font-en)}
.testimonial-author{border-top:1px solid #E2E8F0;padding-top:16px}
.testimonial-author strong{display:block;font-size:.9rem}
.testimonial-author span{font-size:.78rem;color:var(--muted)}
@media(max-width:840px){.testimonial-grid{grid-template-columns:1fr;padding:0 20px}}

/* CEO */
.ceo-block{max-width:900px;margin:0 auto;padding:0 40px}
.ceo-content{background:var(--surface);border:1px solid #E2E8F0;border-radius:var(--radius);padding:48px 40px;position:relative}
.ceo-content::before{content:'';position:absolute;top:0;left:0;bottom:0;width:4px;background:linear-gradient(180deg,var(--primary),var(--accent));border-radius:4px 0 0 4px}
.ceo-msg{font-size:.95rem;line-height:2.2;margin-bottom:24px}
.ceo-sign strong{display:block;font-size:1.2rem;margin-bottom:4px}
.ceo-sign span{font-size:.8rem;color:var(--muted)}
@media(max-width:768px){.ceo-block{padding:0 20px}.ceo-content{padding:32px 24px}}

/* FAQ */
.faq-list{max-width:800px;margin:0 auto;padding:0 20px}
.faq-item{border-bottom:1px solid #E2E8F0;overflow:hidden}
.faq-q{display:flex;align-items:center;gap:16px;padding:20px 0;cursor:pointer;transition:color .3s}
.faq-q:hover{color:var(--primary)}
.faq-q span:first-child{font-family:var(--font-en);font-weight:700;color:var(--primary);font-size:1rem;min-width:28px}
.faq-q h3{flex:1;font-size:.95rem;font-weight:600}
.faq-icon{font-size:1.2rem;color:var(--primary);transition:transform .3s}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease;display:flex;gap:16px;padding:0}
.faq-item.open .faq-a{max-height:300px;padding:0 0 20px}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a span{font-family:var(--font-en);font-weight:700;color:var(--accent);font-size:1rem;min-width:28px}
.faq-a p{font-size:.88rem;color:var(--muted);line-height:1.9}

/* Company */
.company-table{max-width:800px;margin:0 auto;padding:0 20px}
.company-row{display:flex;border-bottom:1px solid #E2E8F0;padding:16px 0}
.company-label{min-width:140px;font-size:.88rem;font-weight:600;color:var(--text)}
.company-value{font-size:.88rem;color:var(--muted)}
@media(max-width:600px){.company-row{flex-direction:column;gap:4px}.company-label{min-width:auto}}

/* Contact */
.contact-box{max-width:800px;margin:0 auto;padding:0 20px}
.contact-info{text-align:center;margin-bottom:40px}
.contact-tel{margin-bottom:8px}
.contact-tel span{font-size:.8rem;color:var(--muted);margin-right:8px}
.contact-tel a{font-family:var(--font-en);font-size:2rem;font-weight:700;color:var(--primary);text-decoration:none}
.contact-info p{font-size:.82rem;color:var(--muted)}
.contact-form{display:grid;gap:16px}
.contact-form input,.contact-form textarea,.contact-form select{width:100%;padding:14px 18px;border:1px solid #E2E8F0;border-radius:var(--radius);font-size:.9rem;font-family:var(--font-jp);background:var(--surface);color:var(--text);transition:border-color .3s}
.contact-form input:focus,.contact-form textarea:focus,.contact-form select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(3,105,161,.08)}

/* Footer */
.footer{background:#0F172A;color:#94A3B8;padding:60px 0 30px}
.footer-inner{max-width:1100px;margin:0 auto;padding:0 40px;display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px}
.footer-brand{font-family:var(--font-en);font-size:1.1rem;font-weight:700;color:var(--accent);margin-bottom:12px}
.footer-desc{font-size:.8rem;line-height:1.8}
.footer h4{font-size:.85rem;font-weight:600;margin-bottom:16px;color:#E2E8F0}
.footer ul{list-style:none}
.footer li{margin-bottom:8px}
.footer li a{font-size:.82rem;transition:color .3s}
.footer li a:hover{color:var(--accent)}
.footer-bottom{max-width:1100px;margin:40px auto 0;padding:20px 40px 0;border-top:1px solid rgba(255,255,255,.1);text-align:center;font-size:.75rem}
@media(max-width:768px){.footer-inner{grid-template-columns:1fr;padding:0 20px}.footer-bottom{padding:20px 20px 0}}

/* Animations */
.fade-up{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.fade-up.visible{opacity:1;transform:translateY(0)}